CN105807458B - Method and device for burning and detecting common voltage of liquid crystal display panel - Google Patents
Method and device for burning and detecting common voltage of liquid crystal display panel Download PDFInfo
- Publication number
- CN105807458B CN105807458B CN201610342207.6A CN201610342207A CN105807458B CN 105807458 B CN105807458 B CN 105807458B CN 201610342207 A CN201610342207 A CN 201610342207A CN 105807458 B CN105807458 B CN 105807458B
- Authority
- CN
- China
- Prior art keywords
- value
- flicker
- values
- voltage
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
本发明实施例提供一种液晶显示面板公共电压的烧录检测方法及装置，涉及显示技术领域，能够避免因操作者的主观判断导致测定出的需要烧录的公共电压不准确的问题。该方法包括循环获取N个不同的待测电压值分别对应的N个画面闪烁值，N个不同的待测电压值构成第一公共电压组，N个画面闪烁值构成第一闪烁值组，且N为大于或等于1的正整数。从第一闪烁值组中，确定出第一闪烁值组中的最小值。用于检测烧录公共电压值。
Embodiments of the present invention provide a method and device for programming and detecting a common voltage of a liquid crystal display panel, which relate to the field of display technology and can avoid the problem of inaccuracy of the measured common voltage that needs to be programmed due to an operator's subjective judgment. The method includes cyclically acquiring N picture flicker values corresponding to N different voltage values to be measured, the N different voltage values to be measured constitute a first common voltage group, the N picture flicker values constitute a first flicker value group, and N is a positive integer greater than or equal to 1. From the first flicker value group, the minimum value in the first flicker value group is determined. Used to detect and program the common voltage value.
Description
Technical Field
The invention relates to the technical field of display, in particular to a burning detection method and device for common voltage of a liquid crystal display panel.
Background
As shown in fig. 1, a Liquid Crystal Display (LCD) adjusts the deflection angle of Liquid Crystal molecules by applying different voltage signals from V0 to V255 to a pixel electrode, so that the light transmittance of the Liquid Crystal molecules changes, and further, the image Display from 0 gray scale to 255 gray scale is realized, wherein the common voltage Vcom is not changed.
However, when the lcd displays a gray-scale image for a long time, the liquid crystal molecules are polarized at a certain deflection angle for a long time, and thus the liquid crystal molecules are permanently damaged. Therefore, in the prior art, it is general to apply two different (positive and negative) voltage signals to the pixel electrodes of the liquid crystal display to enable the polarity inversion of the electric field applied to the liquid crystal molecules. The deflection angle of the liquid crystal molecules can be changed in the process of reversing the polarity of the electric field, so that the polarization of the liquid crystal molecules can be avoided.
Theoretically, as shown in fig. 1, when the voltage difference between two different voltage signals (5V and-5V) applied to the pixel electrode of the liquid crystal display and the common voltage Vcom (0V) applied to the common electrode is equal, the gray-scale values of the display screen before and after the inversion are equal when the polarity of the electric field of the liquid crystal display is inverted, and the display screen does not flicker. However, in practice, although the voltage difference between the two different voltage signals (5V and-5V) applied to the pixel electrode and the theoretical common voltage (0V) is equal, due to the characteristics of the liquid crystal molecules, the actual deflection angle and the theoretical deflection angle of the liquid crystal molecules are different, so that the gray levels of the display frames before and after the polarity of the electric field is reversed (i.e. reversed from 5V to-5V or reversed from-5V to 5V) are not equal, and the display frames flicker.
In the prior art, in order to avoid the flicker of the display image, a common voltage value applied to the common electrode is generally adjusted manually, and the display image is observed by human eyes, so as to determine a common voltage Vcom when the image does not flicker within the range identified by the human eyes, and the common voltage Vcom is burned into the liquid crystal display. However, the flicker condition of the display screen cannot be effectively judged only by human eye observation, and the corresponding common voltages are different when the display screen observed by different people does not flicker, so that the common voltage value to be burned cannot be accurately measured by subjective judgment of an operator.
Disclosure of Invention
The embodiment of the invention provides a burning detection method and device for common voltage of a liquid crystal display panel, which can avoid the problem that the measured common voltage needing burning is inaccurate due to subjective judgment of an operator.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
the embodiment of the invention provides a burning detection method for common voltage of a liquid crystal display panel on one hand, which comprises the following steps: circularly acquiring N image flicker values corresponding to N different voltage values to be detected respectively; the N different voltage values to be detected form a first common voltage group, the N image flicker values form a first flicker value group, N is a positive integer greater than or equal to 1, and the minimum value in the first flicker value group is determined from the first flicker value group.
Further, the cyclically obtaining the image flicker values corresponding to the N different voltage values to be measured includes: and determining the voltage value to be detected, applying the voltage value to be detected to a common electrode of the liquid crystal display panel, and displaying a picture to be detected by the liquid crystal display panel so as to obtain a picture flicker value corresponding to the voltage value to be detected according to the brightness difference of the picture to be detected before and after the polarity of an electric field of the liquid crystal display panel is reversed.
Furthermore, the voltage values to be measured in the first common voltage group form an arithmetic progression.
Further, the group of the first flashing values is selected. Determining the minimum of the first set of scintillation values comprises: acquiring a second minimum value in the first flashing value group, taking a voltage value corresponding to the minimum value as a lower limit of a second common voltage group, and taking a voltage value corresponding to the second minimum value as an upper limit of the second common voltage group; wherein the second common voltage group comprises a plurality of voltage values to be measured between the upper limit and the lower limit. And circularly acquiring M image flicker values corresponding to M different voltage values to be detected in the second common voltage group, wherein the M image flicker values form the second flicker value group, and M is a positive integer greater than or equal to 1. Determining a minimum value in the second set of flicker values from the second set of flicker values.
Furthermore, the voltage values to be measured in the second common voltage group form an arithmetic series.
Further, after the step of determining the minimum of the set of scintillation values, the method further comprises: and taking the voltage value to be measured corresponding to the minimum value in the flicker value group as a selected voltage value and applying the selected voltage value to the common electrode of the liquid crystal display panel. And collecting the image flicker values of the displayed image to be detected for multiple times within preset time to form a third flicker value group. And judging whether each picture flicker value in the third flicker value group meets a discrete threshold value condition. And when the judgment result meets the discrete threshold condition, burning the selected voltage value to the liquid crystal display panel.
Further, the determining whether each picture flicker value in the third flicker value group meets a discrete threshold condition includes: calculating the ratio of the difference between the maximum value and the minimum value in the third flicker value group to the maximum value as the discrete value of the third flicker value group; determining whether a discrete value of the third set of flicker values is less than a discrete threshold, when less than, each picture flicker value of the third set of flicker values satisfying a discrete threshold condition.
Further, the determining whether each picture flicker value in the third flicker value group meets a discrete threshold condition includes: finding a minimum value in the third set of flicker values; determining whether a difference between each picture flicker value in the third set of flicker values and the minimum value is less than a discrete threshold, when less than, each picture flicker value in the third set of flicker values satisfies a discrete threshold condition.
Further, after the programming the voltage value corresponding to the selected voltage value to the liquid crystal display panel, the method further includes: collecting an actual burning voltage value in the liquid crystal display panel, and judging whether the actual burning voltage value is consistent with the selected voltage value; and when the actual burning voltage value is consistent with the selected voltage value, the burning detection step is finished.
In another aspect, an embodiment of the present invention further provides a device for detecting burning of a common voltage of a liquid crystal display panel, where the device includes: the device comprises a bearing table, a flicker value detector and a processor, wherein the bearing table is used for bearing the liquid crystal display panel and providing a light source for the liquid crystal display panel. The flicker value detector is arranged above the bearing surface of the bearing platform, is connected with the processor, and is used for detecting the image flicker value of the display image of the liquid crystal display panel and outputting the detection result to the processor. The processor is used for adjusting the voltage values to be measured applied to the common electrode of the liquid crystal display panel, circularly acquiring the image flicker values corresponding to a plurality of different voltage values to be measured to form a flicker value group, and determining the minimum value in the flicker value group and the voltage value corresponding to the minimum value.
The device further comprises a burner connected with the processor and the liquid crystal display panel and used for receiving the voltage value corresponding to the minimum value and burning the voltage value corresponding to the minimum value to the liquid crystal display panel.
The embodiment of the invention provides a method and a device for detecting burning of common voltage of a liquid crystal display panel, wherein the method for detecting burning of the common voltage of the liquid crystal display panel comprises the steps of circularly obtaining N picture flicker values corresponding to N different voltage values to be detected respectively, wherein the N different voltage values to be detected form a first common voltage group, the N picture flicker values form a first flicker value group, and N is a positive integer greater than or equal to 1. And then, determining the minimum value in the first flickering value group from the first flickering value group, wherein the flickering degree of the display screen of the liquid crystal display panel is minimum after the common voltage corresponding to the minimum value is applied to the common electrode of the liquid crystal display panel.
The method for circularly obtaining the N picture flicker values corresponding to the N different voltage values to be tested and determining the minimum value of the N picture flicker values can be compiled into a program and executed by a processor, so that the common voltage corresponding to the minimum flicker degree of the displayed picture can be determined by the processor, and the flicker of the displayed picture is minimum when the common voltage is burnt to the liquid crystal display panel, thereby solving the problem that the determined common voltage needing to be burnt is inaccurate due to the subjective judgment of an operator.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a signal diagram of different gray levels of a display screen of a liquid crystal display;
fig. 2 is a schematic flow chart of a method for detecting the burning of the common voltage of the liquid crystal display panel according to the embodiment of the invention;
FIG. 3a is a schematic diagram of a pixel unit of a liquid crystal display panel with row inversion;
FIG. 3b is another schematic diagram of a pixel unit of a liquid crystal display panel undergoing a row inversion;
FIG. 4 is a schematic flow chart illustrating another method for detecting the burning of the common voltage of the LCD panel according to the embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a process of adjusting a common voltage value to minimize flicker of a display according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a device for burning and detecting a common voltage of an lcd panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another apparatus for burning and detecting a common voltage of a liquid crystal display panel according to an embodiment of the invention.
Reference numerals: 100-a liquid crystal display panel; 101-a carrier table; 102-a scintillation value detector; 103-a processor; 104-burner.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a burning detection method for common voltage of a liquid crystal display panel, which comprises the following steps of:
step S101, cyclically obtaining N image flicker values corresponding to N different voltage values to be measured, where the N different voltage values to be measured form a first common voltage group, and the N image flicker values form a first flicker value group, where N is a positive integer greater than or equal to 1.
The N flicker values refer to that when the lcd panel pre-displays the same frame, for example, when voltages of +5V and-5V are respectively input to two adjacent rows of pixel electrodes on the lcd panel, a voltage to be measured in the first common voltage group is input to the common electrode, and due to the characteristics of the liquid crystal molecules, the actual deflection angle and the theoretical deflection angle of the liquid crystal molecules are different, so that the gray levels of the displayed frames are not equal before and after the polarity of the electric field is reversed (i.e., from 5V to-5V or from-5V to 5V), thereby causing the displayed frame to flicker. In this case, each voltage value to be measured corresponds to one frame flicker value, so that N different voltage values to be measured in the first common voltage group correspond to N frame flicker values, respectively.
In step S102, the minimum value in the first scintillation value group is determined from the first scintillation value group.
The method for circularly obtaining the N picture flicker values corresponding to the N different voltage values to be tested and determining the minimum value of the N picture flicker values can be compiled into a program and executed by a processor, so that the common voltage corresponding to the minimum flicker degree of the display picture can be determined by the processor, and when the common voltage is burnt to the liquid crystal display panel, the flicker degree of the display picture is minimum, and the problem that the determined common voltage needing to be burnt is inaccurate due to subjective judgment of an operator can be solved.
Step S101 is explained below.
First, the value range of the voltage value to be measured can be determined according to the voltage signal applied to the pixel electrode of the liquid crystal display panel and the actual design experience. For example, when the voltage signal applied to the pixel electrode is 5V and-5V, the value range of the voltage value to be measured can be determined to be-1.2V to-0.8V according to the actual design experience, and when the voltage signal applied to the pixel electrode is 10V and 0V, the value range of the voltage value to be measured can be 3.8V to 4.2V. The following embodiments of the present invention are exemplified by taking the value range of the voltage to be measured as-1.2V to-0.8V.
Specifically, for example, when voltages of +5V and-5V are respectively input to two adjacent rows of pixel electrodes on the liquid crystal display panel, and the voltages to be measured in the first common voltage group are all between-1.2V and-0.8V, the voltages to be measured in the first common voltage group can be any one of a plurality of different values between-1.2V and-0.8V. For example, -1.2V, -1.0V, -0.9V and-0.8V. In the process of reversing the polarity of the electric field, the measured flicker values of the picture corresponding to the voltage to be measured in the first common voltage group are 70%, 40%, 30% and 60%, respectively.
On this basis, since the N different voltage values to be measured that constitute the first common voltage group are any values randomly selected within the set value range, the flicker values in the first flicker value group measured according to the randomly selected voltage value to be measured are not uniformly distributed, and further, when the common voltage value corresponding to the minimum value in the first flicker value group determined in step S102 is applied to the common electrode of the liquid crystal display panel, the flicker degree of the display picture of the liquid crystal display panel is not minimum, that is, the measured common voltage that needs to be burned is inaccurate. Therefore, the present invention preferably sets the voltage values to be measured in the first common voltage group as an arithmetic progression.
For example, when the set value range of the N different voltage values to be measured of the first common voltage group is-0.8V to-1.2V, as shown in table 1, the N different voltage values to be measured of the first common voltage group may be-0.8V, -0.9V, -1.0V, -1.1V, and-1.2V, and the flicker values of the screen corresponding to the voltage to be measured in the first common voltage group are 70%, 40%, 10%, 30%, and 60%, respectively. It can be seen that compared with a group of voltage values to be measured randomly acquired in the first common voltage group, the minimum value of 30% determined in step S102 is the minimum value of 10% in the first common voltage group, that is, when the voltage values to be measured in the first common voltage group form the arithmetic progression, the minimum value of the acquired first flicker value group is smaller, and the flicker degree of the picture to be measured of the liquid crystal display panel is smaller, that is, the accuracy of the detected common voltage value to be burned is improved.
TABLE 1
| Voltage value to be measured (V) | -1.2 | -1.1 | -1.0 | -0.9 | -0.8 |
| Scintillation value (%) | 70 | 40 | 10 | 30 | 60 |
Secondly, as shown in table 1, before obtaining the image flicker value, the first common voltage group may be formed by artificially setting N different voltage values to be measured (-1.2V, -1.1V, -1.0V, -0.9V, -0.8V) within the value range of the voltage value to be measured to form the first common voltage group, storing the first common voltage group in the processor, sequentially calling the different voltage values to be measured in the processor, and performing corresponding image flicker value detection.
Or, the value range (-1.2V to-0.8V) of the voltage value to be measured and the lower limit (-1.2V) of the value range are stored in the processor, and the adjustment precision (0.1V), the processor obtains a corresponding image flicker value of 70 percent according to the stored voltage value to be measured of-1.2V, then 0.1V is added on the basis of-1.2V, namely-1.1V, the voltage value to be measured of-1.1V is obtained to obtain the corresponding picture flicker value of 40 percent, and so on, when the image flicker value corresponding to all the different voltage values to be measured in the value range (-1.2V to-0.8V) is obtained, and all the different voltage values to be measured within the value range (-1.2V to-0.8V (-1.2V, -1.1V, -1.0V, -0.9V and-0.8V) form a first common voltage group.
Thirdly, step S101 specifically includes: firstly, a voltage value to be measured is determined in the first common voltage group (for example, the voltage value-1.2V in the table 1 is selected), the voltage value (-1.2V) to be measured is applied to a common electrode of the liquid crystal display panel, the liquid crystal display panel displays a picture to be measured, a picture flicker value (70%) corresponding to the voltage value to be measured is obtained according to the brightness difference of the picture to be measured before and after the polarity of an electric field of the liquid crystal display panel is reversed, and then the picture flicker values corresponding to different voltage values to be measured are obtained in a circulating manner by adjusting the voltage value to be measured. In this way, through N cycles, N frame flicker values corresponding to N different voltage values to be measured in the first common voltage group are obtained, and the N frame flicker values constitute the first flicker value group. For example, 5 different voltage values to be measured (-1.2V, -1.1V, -1.0V, -0.9V, -0.8V) in the first common voltage group are obtained through 5 cycles in table 1, corresponding to 5 frame flicker values (70%, 40%, 10%, 30%, 60%), and the 5 frame flicker values constitute the first flicker value group.
Fourthly, the above-mentioned obtaining the flicker value of the picture corresponding to the voltage value to be measured according to the brightness difference between the pictures to be measured before and after the polarity inversion of the electric field of the liquid crystal display panel means that, for example, the line inversion is taken as an example, fig. 3a represents the display picture before the polarity inversion of the electric field of the liquid crystal display panel; fig. 3b represents a display screen of the liquid crystal display panel after the polarity of the electric field is inverted. In this way, the ratio of the absolute value of the difference between the luminance L1 of the display screen before the inversion and the luminance L2 of the display screen after the inversion to the luminance L1 of the display screen before the inversion can obtain the screen flicker value F, i.e., F ═ L1-L2 |/L1. Here, the description is given only by way of example of the row inversion, but it is needless to say that dot inversion or column inversion is also possible, and the present invention is not limited to this.
In addition, the flicker value F can be obtained by the ratio of the absolute value of the difference between the luminance L1 of the display screen before inversion and the luminance L2 of the display screen after inversion to the luminance L1 of the display screen before inversion, wherein the display screen before inversion and the display screen after inversion may be two adjacent frames (for example, a first frame display screen and a second frame display screen) after one polarity inversion, or may be frames (for example, a first frame display screen and a fourth frame display screen) after multiple polarity inversions. The specific measurement process needs to be determined according to the precision range of the flicker value of the detection picture of the flicker value detector, for example, when the precision of the flicker value of the detection picture of the flicker value detector is to acquire the brightness of the picture to be detected every 0.5s, and the flicker frequency of the picture to be detected is to flicker every 0.5s, the display picture before inversion and the display picture after inversion are two adjacent frames. When the flicker frequency of the frame to be detected is not changed and the precision of the flicker value of the detected frame of the flicker value detector is greater than 0.5s, the display frame before inversion and the display frame after inversion can be frames separated by multiple frames.
Fifthly, the frame to be measured may be a color frame with a plurality of gray scale values or a pure color frame with one gray scale value, and since the color frames with a plurality of gray scale values have a certain influence on the accuracy of the flicker value of the detected frame, the measured flicker value of the frame is inaccurate, and thus the invention preferably adopts a pure color frame with one gray scale value.
Step S102 is explained below.
Specifically, after acquiring N screen flicker values in step S101, the processor may determine the minimum value of the first flicker value group, where the determination of the minimum value of the first flicker value group may employ a bubble sort algorithm, and for a set of data from front to back, by comparing every two adjacent values, if the previous value is larger than the next value, the positions of the two values are exchanged. For example, if 70 of the first group of scintillation values (70, 40, 10, 30, 60) shown in table 1 is compared with the adjacent value 40 and is larger than 40, 70 and 40 are exchanged for position (40, 70, 10, 30, 60), then 70 is compared with 10 and is exchanged for position, and all the adjacent values are compared and exchanged for position by analogy, and finally a group of first group of scintillation values (10, 30, 40, 60, 70) arranged from small to large is obtained. Thus, when the N picture flicker values in the first flicker value group are arranged in descending order, the first picture flicker value 10% is the minimum value in the first flicker value group. Of course, the above sorting algorithm is only an example, and a selective sorting algorithm and a fast sorting algorithm may also be used, which is not limited in the present invention as long as the minimum value in the first set of flash values can be determined.
To sum up, in the method for detecting the burning of the common voltage of the liquid crystal display panel shown in fig. 4, the steps S101 and S102 both belong to the step S02, and are used for adjusting the common voltage value to the minimum flicker degree of the display screen. On this basis, since the liquid crystal display panel cannot emit light by itself, before the step S02, the method for detecting the burning of the common voltage of the liquid crystal display panel further includes a step S01 of providing a backlight to the liquid crystal display panel.
On this basis, in order to further improve the accuracy of the detected common voltage value to be burned, as shown in fig. 5, after the step S02 includes the step S101 and the step S102, the method may further include:
in step S201, the second smallest value in the first scintillation value group is obtained, and the voltage value corresponding to the smallest value in the first scintillation value group is used as the lower limit of the second common voltage group, and the voltage value corresponding to the second smallest value is used as the upper limit of the second common voltage group. The second common voltage group comprises a plurality of voltage values to be measured between an upper limit and a lower limit.
Specifically, the second smallest value in the first flicker value group is obtained by sorting the N screen flicker values in the first flicker value group from small to large in step S102, where the first screen flicker value is the smallest value in the first flicker value group, and the second screen flicker value is the second smallest value in the first flicker value group. Specifically, when the N different voltage values to be measured of the first common voltage group are-1.2V, -1.1V, -1.0V, -0.9V and-0.8V, the flicker values in the first flicker value group obtained by the measurement are 70%, 40%, 10%, 30% and 60%, respectively, and the minimum value in the first flicker value group is determined in step S102, the flicker values in the first flicker value group are sorted from small to large into 10%, 30%, 40%, 60% and 70%, and the second screen flicker value is 30% of the second flicker value in the first flicker value group.
Then, a voltage value corresponding to the minimum value in the first scintillation value group is used as a lower limit, a voltage value corresponding to the next minimum value is used as an upper limit, a plurality of voltages to be measured are subdivided and determined in a voltage range to be measured between the upper limit and the lower limit, and a second common voltage group is formed. Specifically, if the voltage value to be measured corresponding to the minimum value of 10% in the first scintillation value group is-1.0V, and the voltage value to be measured corresponding to the next minimum value of 30% in the first scintillation value group is-0.9V, the second common voltage group includes a plurality of voltage values to be measured from-1.0V to-0.9V.
Step S202, circularly obtaining M image flicker values corresponding to M different voltage values to be detected in a second common voltage group, wherein the M image flicker values form the second flicker value group, and M is a positive integer greater than or equal to 1.
On the basis, the set value range of M different voltage values to be measured of the second common voltage group is-1.0V to-0.9V, the reason is the same as that of the voltage values to be measured of the equal difference sequence in the first common voltage group, in order to enable the voltage values to be measured in the second common voltage group to be sequentially and uniformly changed, further enable the flicker values measured according to the different voltage values to be measured to be sequentially and uniformly changed, and further improve the accuracy of the detected common voltage values to be burnt, the voltage values to be measured in the second common voltage group are preferably set to be the equal difference sequence.
For example, when the set value range of the M different voltage values to be measured of the second common voltage group is-1.0V to-0.9V, as shown in table 2, the M different voltage values to be measured in the arithmetic progression of the second common voltage group may be-1.0V, -0.99V, -0.98V, -0.97V, -0.96V, -0.95V, -0.94V, -0.93V, -0.92V, -0.91V, and-0.9V. And the M picture flicker values (see table 2) corresponding to the M different voltage values to be measured constitute a second flicker value group.
TABLE 2
| Voltage value to be measured (V) | -1.0 | -0.99 | -0.98 | -0.97 | -0.96 | -0.95 |
| Scintillation value (%) | 10 | 9 | 8 | 9 | 10 | 12 |
| Voltage value to be measured (V) | -0.94 | -0.93 | -0.92 | -0.91 | -0.9 | |
| Scintillation value (%) | 14 | 17 | 21 | 25 | 30 |
It should be noted here that the process of cyclically obtaining M frame flicker values corresponding to M different voltage values to be measured is the same as the process of cyclically obtaining N frame flicker values corresponding to N different voltage values to be measured in step S101, and is not described here again. Wherein the above-mentioned M and N may be the same or different, and the comparison of the present invention is not limited
In step S203, the minimum value in the second flicker value group is determined from the second flicker value group.
It should be noted here that determining the minimum value in the second set of flicker values may be the same as determining the minimum value in the first set of flicker values in step S102, and is not repeated here. Specifically, as shown in table 2, the M screen flicker values in the second flicker value group are 10%, 9%, 10%, 12%, 14%, 17%, and 30%, respectively, and the minimum value in the second flicker value group is determined to be 9%.
In summary, after the minimum value in the first flicker value group is obtained in step S102, a plurality of different voltages to be measured are determined within the voltage range to be measured between the upper limit and the lower limit, with the minimum value in the first flicker value group as the lower limit and the second minimum value in the first flicker value group as the upper limit, and the screen flicker values corresponding to the different voltage values to be measured are cyclically obtained, so as to obtain M screen flicker values corresponding to M different voltage values to be measured in the second common voltage group, where the M screen flicker values constitute the second flicker value group.
On the basis, after the minimum value in the first flicker value group is determined in step 102, or after the minimum value in the second flicker value group is determined in step 203, that is, after step S02, as shown in fig. 4, the method for detecting burning of the common voltage of the liquid crystal display panel further includes:
step S03 is to apply the voltage value corresponding to the minimum value in the flicker value group to the common electrode of the liquid crystal display panel as the selected voltage value.
Specifically, a voltage value of-0.98V corresponding to a minimum value of 8% in the second flicker value group in table 2 may be applied to the common electrode of the liquid crystal display panel as the selected voltage value. A voltage value of-1.0V corresponding to a minimum value of 10% in the first set of flicker values in table 1 may also be applied to the common electrode of the liquid crystal display panel as the selected voltage value.
And step S04, collecting and displaying the flicker values of the picture to be detected for multiple times within the preset time to form a third flicker value group.
Specifically, the picture flicker frequency of the picture to be detected and the detection precision of a flicker value detector for acquiring and displaying the picture flicker value of the picture to be detected are integrated, the picture flicker values of a plurality of pictures to be detected are acquired within a certain time, and a third flicker value group is formed. Specifically, when the number of the obtained image flicker values of the plurality of images to be detected is less than 3, the accuracy of the detected image flicker values cannot be ensured due to less data; when the number of the obtained image flicker values of the plurality of images to be detected is more than 7, the required detection time is too long, so that the detection efficiency is reduced, therefore, the invention preferably obtains 5 image flicker values of the selected voltage value corresponding to the images to be detected.
For example, the accuracy of detecting the flicker value of the flicker value detector is to obtain the brightness of the frame to be detected every 0.5s, and obtain the brightness L1 of the first frame of the frame to be detected and the brightness L2 of the second frame of the frame to be detected within 1.0s to obtain the flicker value of the frame to be detected, so that, taking-0.98V as the selected voltage value to be applied to the common electrode of the liquid crystal display panel as an example, within 5s of the preset time, 5 flicker values of the frame, 8.2%, 8.0%, 8.5%, 8.1%, 8.8%, can be obtained, and constitute the third flicker value group.
And step S05, judging whether each picture flicker value in the third flicker value group meets the discrete threshold value condition.
Specifically, the stability of the plurality of image flicker values forming the third flicker value group is determined by setting a threshold, that is, if the distribution of the plurality of image flicker values of the third flicker value group is concentrated, it indicates that the selected voltage value is relatively stable and meets the discrete threshold condition; if the plurality of screen flicker value distributions in the third flicker value group are relatively dispersed, it indicates that the selected voltage value is unstable and does not satisfy the dispersion threshold condition.
The following is a detailed description of determining whether each of the screen flicker values in the third flicker value group satisfies the discrete threshold condition.
For example, the above-mentioned determining whether each picture flicker value in the third flicker value group satisfies the discrete threshold condition may be:
and solving the ratio of the difference between the maximum value and the minimum value in the third flicker value group to the maximum value as the discrete value of the third flicker value group, determining whether the discrete value of the third flicker value group is smaller than a discrete threshold value P, and if so, each picture flicker value in the third flicker value group meets the discrete threshold value condition.
Specifically, for example, the flicker values of the image in the third flicker value group corresponding to the selected voltage value-0.98V are 8.2%, 8.0%, 8.5%, 8.1%, and 8.8%; the discrete threshold P is 10%. The ratio of the difference between the maximum value of 8.8% and the minimum value of 8.0% in the third set of scintillations to the maximum value of 8.8% is (8.8% -8.0%)/8.8% < 9.09% < P ═ 10%, i.e., the above-mentioned selected voltage value of-0.98V satisfies the discrete threshold condition.
For another example, the above-mentioned determining whether each picture flicker value in the third flicker value group satisfies the discrete threshold condition may further include:
and solving a minimum value in the third flicker value group, determining whether the difference between each image flicker value in the third flicker value group and the minimum value is smaller than a discrete threshold value Q, and if so, each image flicker value in the third flicker value group meets a discrete threshold value condition.
Specifically, for example, the flicker values of the image in the third flicker value group corresponding to the selected voltage value-0.98V are 8.2%, 8.0%, 8.5%, 8.1%, and 8.8%; the discrete threshold Q is 1.0%; the difference between each picture flicker value in the third flicker value group and the minimum value is 8.2% -8.0% < 1.0%, 8.0% -8.0% < 0 < 1.0%, 8.5% -8.0% < 0.5% < 1.0%, 8.1% -8.0% < 0.1% < 1.0%, and 8.8% -8.0% < 0.8% < 1.0%, that is, the difference between each picture flicker value in the third flicker value group and the minimum value is smaller than a discrete threshold Q, and the selected voltage value of-0.98V satisfies the discrete threshold condition.
Here, specific values of the discrete threshold P and the discrete threshold Q may be specifically set according to requirements for a display screen of a liquid crystal display panel in actual production. When the requirement of a certain type of liquid crystal display panel for displaying a picture is high, that is, the requirement of the display picture for the stability of the flicker degree is high, the discrete threshold P and the discrete threshold Q may be set to be smaller values, so that the picture flicker values in the third flicker value group satisfying the threshold condition are distributed more intensively, thereby ensuring the stability of the selected voltage value. Of course, when the requirement for the stability of the flicker degree of the display screen of a certain type of liquid crystal display panel is not high, the discrete threshold P and the discrete threshold Q may be set to a larger value as appropriate.
Step S06, when the above-mentioned determination result satisfies the discrete threshold condition, the selected voltage value is programmed into the liquid crystal display panel.
Specifically, when the flicker values of the picture in the third flicker value group corresponding to the selected voltage value of-0.98V are 8.2%, 8.0%, 8.5%, 8.1% and 8.8%, and the discrete threshold condition is satisfied, it is indicated that the selected voltage value of-0.98V is relatively stable, and the selected voltage value of-0.98V is programmed into the liquid crystal display panel.
In addition, when the selected voltage does not satisfy the discrete threshold condition, it indicates that the selected voltage value is unstable, and the detection process may be terminated; it is also possible to return to step S02 for loop detection as shown in fig. 4, and the number of loops may be set to 2 or 3, and after 2 or 3 loop detections, the detection process is terminated if the discrete threshold condition is still not satisfied.
On this basis, as shown in fig. 4, after the selected voltage value is programmed into the liquid crystal display panel in step S06, in order to avoid the occurrence of programming errors or programming omission due to errors or instability of the programming system, the method for programming and detecting the common voltage of the liquid crystal display panel further includes:
and step S07, collecting the actual burning voltage value in the liquid crystal display panel.
Step S08, judging whether the actual burning voltage value is consistent with the selected voltage value;
step S09, when the actual burning voltage value is consistent with the selected voltage value, the burning detection step is finished.
Specifically, after the selected voltage value is burned into the liquid crystal display panel in step S06, the actual burning voltage value in the liquid crystal display panel at that time is collected, and the actual burning voltage value is compared with the selected voltage value, if the actual burning voltage value is consistent with the selected voltage value, the system displays "burning is successful", and the detection burning step is finished; if the actual burning voltage value is not consistent with the selected voltage value, the system displays 'burning failure', and can return to the step S02 for cycle measurement; or ending the detection burning and carrying out other corresponding processing on the liquid crystal display panel.
An embodiment of the present invention further provides a device for detecting burning of a common voltage of a liquid crystal display panel, as shown in fig. 6, the device includes: a carrying table 101 for carrying the liquid crystal display panel 100 and providing a light source to the liquid crystal display panel 100, a flicker value detector 102 and a processor 103. The flicker detector 102 is disposed above the carrying surface of the carrying platform 101, connected to the processor 103, and configured to detect a flicker value of a display image of the lcd panel 100, and output a detection result to the processor 103; the processor 103 is configured to adjust the voltage values to be measured applied to the common electrode of the liquid crystal display panel 100, cyclically obtain the screen flicker values corresponding to a plurality of different voltage values to be measured to form a flicker value group, and determine a minimum value in the flicker value group and a voltage value corresponding to the minimum value.
Specifically, the lcd panel 100 is placed on a carrier 101 capable of providing a light source, the processor 103 applies different voltage values to be measured to the common electrode of the lcd panel 100, the different voltage values to be measured form a first common voltage group, the flicker value detector 102 obtains picture flicker values corresponding to the different voltage values to be measured in the first common voltage group according to a brightness difference between pictures to be measured before and after the polarity of the electric field of the lcd panel 100 is reversed, the processor 103 obtains the picture flicker values corresponding to the different voltage values to be measured and forms a flicker value group, and determines a minimum value in the flicker value group and a voltage value corresponding to the minimum value through data processing.
It should be noted that, for those skilled in the art, the terms "upper", "lower", "etc. are defined herein with respect to the schematic orientation of the burn detection apparatus in the drawings, such as fig. 6, and it should be understood that these terms are relative terms, which are used for descriptive and clarifying purposes, and may be changed accordingly according to the change of the orientation of the burn detection apparatus.
Therefore, N picture flicker values corresponding to N different voltage values to be measured are obtained through the processor and the flicker value detector in a circulating mode, the method for determining the minimum value of the N picture flicker values can be compiled into a program and executed by the processor, and then the corresponding public voltage determined by the processor when the flicker degree of the displayed picture is minimum is burnt to the liquid crystal display panel, so that the problem that the measured public voltage needing to be burnt is inaccurate due to subjective judgment of an operator can be solved.
On this basis, as shown in fig. 7, the apparatus for burning and detecting the common voltage of the liquid crystal display panel further includes a burner 104 connected to the processor 103 and the liquid crystal display panel 100, for receiving the voltage value corresponding to the minimum value, and burning the voltage value corresponding to the minimum value to the liquid crystal display panel 100.
Specifically, after the minimum value in the flicker value group and the voltage value corresponding to the minimum value are determined by the processor 103, the voltage value corresponding to the minimum value is output to the burner 104 connected to the processor 103, and after the burner 104 receives the voltage value corresponding to the minimum value, the voltage value corresponding to the minimum value is burnt into the liquid crystal display panel 100, specifically, the voltage value corresponding to the minimum value may be burnt into the driving circuit of the liquid crystal display panel 100.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. A burning detection method for common voltage of a liquid crystal display panel is characterized by comprising the following steps:
circularly acquiring N image flicker values corresponding to N different voltage values to be detected respectively; the N different voltage values to be detected form a first common voltage group, the N image flicker values form a first flicker value group, and N is a positive integer greater than or equal to 1;
the voltage values to be measured in the first common voltage group form an arithmetic progression;
determining a minimum value of the first set of scintillation values from the first set of scintillation values;
determining the minimum value of the first set of scintillation values from the first set of scintillation values comprises:
acquiring a second smallest value in the first flashing value group; taking the voltage value corresponding to the minimum value as the lower limit of a second common voltage group, and taking the voltage value corresponding to the second minimum value as the upper limit of the second common voltage group; the second common voltage group comprises a plurality of voltage values to be measured, wherein the voltage values to be measured are located between the upper limit and the lower limit; in the second common voltage group, circularly obtaining M image flicker values corresponding to M different voltage values to be detected respectively, wherein the M image flicker values form a second flicker value group, and M is a positive integer greater than or equal to 1; determining a minimum value in the second set of flicker values from the second set of flicker values; the voltage values to be measured in the second common voltage group form an arithmetic series;
after the step of determining the minimum value in the second set of flicker values, the method further comprises:
taking the voltage value to be measured corresponding to the minimum value in the second flicker value group as a selected voltage value and applying the selected voltage value to the common electrode of the liquid crystal display panel;
collecting the image flicker values of the displayed image to be detected for multiple times within preset time to form a third flicker value group;
judging whether each image flicker value in the third flicker value group meets a discrete threshold condition;
and when the judgment result meets the discrete threshold condition, burning the selected voltage value to the liquid crystal display panel.
2. The method as claimed in claim 1, wherein the cyclically obtaining flicker values of the N different voltages to be measured respectively comprises:
and determining the voltage value to be detected, applying the voltage value to be detected to a common electrode of the liquid crystal display panel, and displaying a picture to be detected by the liquid crystal display panel so as to obtain a picture flicker value corresponding to the voltage value to be detected according to the brightness difference of the picture to be detected before and after the polarity of an electric field of the liquid crystal display panel is reversed.
3. The method as claimed in claim 1, wherein the determining whether each flicker value of the third flicker value set satisfies a discrete threshold condition comprises:
calculating the ratio of the difference between the maximum value and the minimum value in the third flicker value group to the maximum value as the discrete value of the third flicker value group;
determining whether a discrete value of the third set of flicker values is less than a discrete threshold, when less than, each picture flicker value of the third set of flicker values satisfying a discrete threshold condition.
4. The method as claimed in claim 1, wherein the determining whether each flicker value of the third flicker value set satisfies a discrete threshold condition comprises:
finding a minimum value in the third set of flicker values;
determining whether a difference between each picture flicker value in the third set of flicker values and the minimum value is less than a discrete threshold, when less than, each picture flicker value in the third set of flicker values satisfies a discrete threshold condition.
5. The method as claimed in claim 1, wherein after the programming the voltage value corresponding to the selected voltage value to the lcd panel, the method further comprises:
collecting an actual burning voltage value in the liquid crystal display panel, and judging whether the actual burning voltage value is consistent with the selected voltage value;
and when the actual burning voltage value is consistent with the selected voltage value, the burning detection step is finished.
6. A burning detection device for the common voltage of the liquid crystal display panel, which adopts the burning detection method for the common voltage of the liquid crystal display panel as claimed in any one of claims 1 to 5, and is characterized by comprising the following steps: the liquid crystal display device comprises a bearing table, a flicker value detector and a processor, wherein the bearing table is used for bearing the liquid crystal display panel and providing a light source for the liquid crystal display panel;
the flicker value detector is arranged above the bearing surface of the bearing table, is connected with the processor and is used for detecting the image flicker value of the display image of the liquid crystal display panel and outputting the detection result to the processor;
the processor is used for adjusting the voltage values to be measured applied to the common electrode of the liquid crystal display panel, circularly acquiring the image flicker values corresponding to a plurality of different voltage values to be measured to form a flicker value group, and determining the minimum value in the flicker value group and the voltage value corresponding to the minimum value.
7. The apparatus of claim 6, further comprising a burner connected to the processor and the LCD panel for receiving the voltage value corresponding to the minimum value and burning the voltage value corresponding to the minimum value to the LCD panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610342207.6A CN105807458B (en) | 2016-05-20 | 2016-05-20 | Method and device for burning and detecting common voltage of liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610342207.6A CN105807458B (en) | 2016-05-20 | 2016-05-20 | Method and device for burning and detecting common voltage of liquid crystal display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105807458A CN105807458A (en) | 2016-07-27 |
| CN105807458B true CN105807458B (en) | 2021-02-26 |
Family
ID=56452722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610342207.6A Expired - Fee Related CN105807458B (en) | 2016-05-20 | 2016-05-20 | Method and device for burning and detecting common voltage of liquid crystal display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105807458B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106169281A (en) * | 2016-09-13 | 2016-11-30 | 深圳市华星光电技术有限公司 | Flicker of display panel degree regulation equipment and control method |
| CN106990570A (en) * | 2017-05-27 | 2017-07-28 | 南京中电熊猫平板显示科技有限公司 | The most suitable common electric voltage measuring method and device of liquid crystal panel |
| CN108172188B (en) * | 2018-01-05 | 2020-10-13 | 上海闻泰电子科技有限公司 | Burning method and device for common voltage of display screen and computer readable storage medium |
| CN108089354B (en) * | 2018-01-18 | 2021-08-17 | 京东方科技集团股份有限公司 | Common voltage programming method of liquid crystal display panel |
| CN111653227A (en) * | 2020-07-07 | 2020-09-11 | 蚌埠国显科技有限公司 | VCOM voltage burning method and device for liquid crystal display module |
| CN114203125B (en) * | 2021-12-07 | 2023-02-24 | 昆山龙腾光电股份有限公司 | Method and device for acquiring common voltage and computer storage medium |
| CN117727281B (en) * | 2023-12-14 | 2024-10-29 | 深圳市正通仁禾科技有限公司 | Method, system and readable storage medium for improving screen flicker value |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003255906A (en) * | 2002-03-04 | 2003-09-10 | Matsushita Electric Ind Co Ltd | Device and method for liquid crystal common electrode voltage adjustment |
| CN103018934A (en) * | 2012-12-07 | 2013-04-03 | 京东方科技集团股份有限公司 | Liquid crystal module testing device |
| CN103761951A (en) * | 2013-12-31 | 2014-04-30 | 深圳市华星光电技术有限公司 | System and method for adjusting self-adaption multiregion public voltages |
| CN104181719A (en) * | 2014-09-17 | 2014-12-03 | 深圳市华星光电技术有限公司 | Method for adjusting flicker degree of liquid crystal panels |
| CN105355185A (en) * | 2015-12-14 | 2016-02-24 | 厦门天马微电子有限公司 | Driving circuit of display panel, display device and driving method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004271609A (en) * | 2003-03-05 | 2004-09-30 | Canon Inc | Driving method of display device |
| JP4470096B2 (en) * | 2003-12-24 | 2010-06-02 | ソニー株式会社 | Display device and display method, and liquid crystal drive circuit and liquid crystal drive method |
| JP2007206651A (en) * | 2006-02-06 | 2007-08-16 | Toshiba Corp | Image display apparatus and method |
| US7677945B2 (en) * | 2006-05-24 | 2010-03-16 | E.I. Du Pont De Nemours And Company | Method of forming an external electrode fluorescent lamp, thick film electrode compositions used therein, and lamps and LCD devices formed thereof |
| JP5227567B2 (en) * | 2006-11-08 | 2013-07-03 | 富士フイルム株式会社 | Color filter and liquid crystal display device using the same |
| JP5071442B2 (en) * | 2009-06-03 | 2012-11-14 | セイコーエプソン株式会社 | Liquid crystal display device, control method, and electronic apparatus |
| CN101937634B (en) * | 2010-09-01 | 2012-07-04 | 青岛海信电器股份有限公司 | Picture regulating method and device of liquid crystal panel |
| CN105096782B (en) * | 2015-08-05 | 2017-10-27 | 厦门天马微电子有限公司 | A kind of display device corrects the foolproof method and its system of flicker automatically |
-
2016
- 2016-05-20 CN CN201610342207.6A patent/CN105807458B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003255906A (en) * | 2002-03-04 | 2003-09-10 | Matsushita Electric Ind Co Ltd | Device and method for liquid crystal common electrode voltage adjustment |
| CN103018934A (en) * | 2012-12-07 | 2013-04-03 | 京东方科技集团股份有限公司 | Liquid crystal module testing device |
| CN103761951A (en) * | 2013-12-31 | 2014-04-30 | 深圳市华星光电技术有限公司 | System and method for adjusting self-adaption multiregion public voltages |
| CN104181719A (en) * | 2014-09-17 | 2014-12-03 | 深圳市华星光电技术有限公司 | Method for adjusting flicker degree of liquid crystal panels |
| CN105355185A (en) * | 2015-12-14 | 2016-02-24 | 厦门天马微电子有限公司 | Driving circuit of display panel, display device and driving method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105807458A (en) | 2016-07-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105807458B (en) | Method and device for burning and detecting common voltage of liquid crystal display panel | |
| US9805674B2 (en) | Adjusting method of display parameter and liquid crystal display system | |
| CN102903344B (en) | Public electrode voltage compensation method and device and time schedule controller | |
| CN102855842B (en) | Method and device for displaying and controlling images | |
| US10395587B2 (en) | Method and apparatus for establishing luminance compensation model, method and apparatus for compensating for luminance of display screen, and display device | |
| CN107958651B (en) | Optical compensation method and device for display panel, and display device | |
| CN106782430B (en) | A kind of display panel brightness adjusting method and system | |
| CN104200785B (en) | Method of supplying power to, device and the display device of a kind of display floater source electrode driver | |
| CN112185313B (en) | Pixel structure driving method and display device | |
| CN104021751B (en) | Reduce method and device, display screen and display device that display screen flicker is uneven | |
| US10018838B2 (en) | Aging compensation for virtual reality headset display device | |
| CN104036742B (en) | Gamma reference voltage generation circuit, V-T curve method of testing and display device | |
| CN105741813A (en) | Image processing system and method and display device | |
| CN104112420A (en) | Display device and driving method thereof | |
| CN109872701B (en) | Source electrode voltage adjustment method, display adjustment method, display module and liquid crystal screen | |
| CN104732943A (en) | Public voltage regulating method and device and display device | |
| US7884792B2 (en) | Method of extracting optimized digital variable resistor value and system using the same | |
| CN107221273B (en) | Display screen flicker test method | |
| CN113763857A (en) | Display panel driving method, driving device and computer equipment | |
| KR20130110388A (en) | Method for controlling a flicker of liquid crystall display device | |
| US9824652B2 (en) | Display apparatus and operation method thereof | |
| CN106205558A (en) | Image element driving method and device | |
| CN112614468A (en) | Brightness compensation method and system of display panel | |
| CN104978942B (en) | Drive circuit, driving method and display device | |
| CN112447148B (en) | Display device and correction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |