CN117831458B - Display device driving method and display device - Google Patents
Display device driving method and display device Download PDFInfo
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- 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
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- 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
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
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- 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
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3433—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/344—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
本申请公开了一种显示装置的驱动方法和显示装置，所述显示装置包括多个像素区，每个像素区包括三个OLED子像素和一个电子纸像素，所述驱动方法包括步骤：获取三个OLED子像素的灰阶数据；判断比较三个OLED子像素的灰阶数据，若三个OLED子像素的灰阶数据相同，则生成对应的灰阶数据至电子纸像素，以驱动电子纸像素显示，若任意一个OLED子像素的灰阶数据与其他两个OLED子像素的灰阶数据不同，则生成对应的灰阶数据至三个OLED子像素，以驱动三个OLED子像素显示；其中，三个OLED子像素的颜色各不相同。本申请通过在OLED面板内增加电子纸像素，电子纸像素与OLED子像素在不同的状态下进行交替显示，从而降低OLED子像素的衰减，且同时减少OLED面板的功耗，提高使用寿命。
The present application discloses a driving method of a display device and a display device, wherein the display device includes a plurality of pixel areas, each pixel area includes three OLED sub-pixels and one electronic paper pixel, and the driving method includes the steps of: obtaining grayscale data of the three OLED sub-pixels; judging and comparing the grayscale data of the three OLED sub-pixels, if the grayscale data of the three OLED sub-pixels are the same, then generating corresponding grayscale data to the electronic paper pixel to drive the electronic paper pixel to display, and if the grayscale data of any OLED sub-pixel is different from the grayscale data of the other two OLED sub-pixels, then generating corresponding grayscale data to the three OLED sub-pixels to drive the three OLED sub-pixels to display; wherein the colors of the three OLED sub-pixels are different. The present application reduces the attenuation of the OLED sub-pixels by adding electronic paper pixels in the OLED panel, and the electronic paper pixels and the OLED sub-pixels are alternately displayed in different states, thereby reducing the power consumption of the OLED panel and improving the service life.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a driving method of a display device and a display device.
Background
Along with the increasing requirements of people on display quality, the LCD panel products cannot meet the requirements of Light, thin, quick response, low power consumption and the like, and the OLED (Organic Light-Emitting Diode) display technology gradually becomes the mainstream display technology by virtue of the advantages of fast response speed, wide working temperature range, high contrast, large visual angle, ultrathin panel, capability of realizing flexible display, light transmission display and the like.
In order to maintain a certain brightness, the backlight brightness has to be increased, thereby also increasing the backlight power consumption. Therefore, the development trend of high resolution and high color saturation of the display screen leads to the increasing of power consumption of the mobile phone, the current battery capacity can not meet the requirements, the standby time of the mobile phone is greatly shortened, and the OLED panel is easy to age due to the reasons of luminous efficiency and service life, so that the life cycle of the product is influenced.
Disclosure of Invention
The application aims to provide a driving method of a display device and the display device, which can reduce the power consumption of an OLED display panel and prolong the service life.
The application discloses a driving method of a display device, which comprises a plurality of pixel areas, wherein each pixel area comprises three OLED sub-pixels and one electronic paper pixel, and the driving method comprises the following steps:
acquiring gray-scale data of three OLED sub-pixels, and
Judging and comparing the gray-scale data of the three OLED sub-pixels, if the gray-scale data of the three OLED sub-pixels are the same, generating corresponding gray-scale data to the electronic paper pixels to drive the electronic paper pixels to display, and if the gray-scale data of any one OLED sub-pixel is different from the gray-scale data of the other two OLED sub-pixels, generating corresponding gray-scale data to the three OLED sub-pixels to drive the three OLED sub-pixels to display;
wherein the three OLED sub-pixels are different in color.
Optionally, the display device includes a brightness detection module and a brightness compensation module, the brightness detection module is connected with the brightness compensation module, the brightness compensation module controls the light emitting brightness of the electronic paper pixel, the judging compares the gray scale data of the three OLED sub-pixels, if the gray scale data of the three OLED sub-pixels are the same, the corresponding gray scale data is generated to the electronic paper pixel to drive the electronic paper pixel to display, if the gray scale data of any one OLED sub-pixel is different from the gray scale data of the other two OLED sub-pixels, the corresponding gray scale data is generated to the three OLED sub-pixels, and the step of driving the three OLED sub-pixels to display includes:
the brightness detection module detects and acquires the actual display brightness L1 after the three OLED sub-pixels are mixed, compares the actual display brightness with the display brightness L2 after the three OLED sub-pixels are corresponding to the gray scale mixed, and drives the three OLED sub-pixels to display if the L1 is smaller than or equal to the L2 and the gray scale data of any one OLED sub-pixel is different from the gray scale data of the other two OLED sub-pixels, and
And the brightness compensation module obtains a compensation value according to the difference value of the L1 and the L2, and controls the luminous brightness of the electronic paper pixel through the compensation value.
Optionally, the display device includes a light intensity sensor, where the light intensity sensor is used to detect brightness of ambient light, and the driving method further includes the following steps:
Detecting the brightness of external environment light, if the brightness value is larger than a preset brightness value, directly starting an electronic paper pixel, and closing an OLED sub-pixel, if the brightness is smaller than or equal to the preset brightness value, acquiring the gray-scale data of the three OLED sub-pixels, judging and comparing the gray-scale data of the three OLED sub-pixels, if the gray-scale data of the three OLED sub-pixels are the same, generating corresponding gray-scale data to the electronic paper pixel to drive the electronic paper pixel to display, and if the gray-scale data of any one OLED sub-pixel is different from the gray-scale data of the other two OLED sub-pixels, generating corresponding gray-scale data to the three OLED sub-pixels to drive the three OLED sub-pixels to display;
Wherein, the electronic paper pixel is formed by using a color electronic paper material.
Optionally, along the data line direction of the OLED sub-pixels, the display device is divided into a plurality of partitions, each partition includes at least one row of pixels, the brightness compensation module obtains a compensation value according to the difference between L1 and L2, and the step of controlling the light emitting brightness of the electronic paper pixels through the compensation value includes:
And obtaining a compensation value according to the difference value of L1 and L2 and the difference value of the current of the pixel in the upper row and the current of the pixel in the lower row, and controlling the luminous brightness of the pixel of the electronic paper through the compensation value.
Optionally, the display device includes a first area and a second area, the first area is disposed around the second area, and the second area is a two-dimensional code area, and the driving method includes the steps of:
And if the current pixel belongs to the second area, the OLED sub-pixels and the electronic paper pixels are started at the same time, if the current pixel belongs to the first area, the gray-scale data of the three OLED sub-pixels are acquired, the gray-scale data of the three OLED sub-pixels are judged and compared, if the gray-scale data of the three OLED sub-pixels are the same, the corresponding gray-scale data are generated to the electronic paper pixels so as to drive the electronic paper pixels to display, and if the gray-scale data of any one OLED sub-pixel are different from the gray-scale data of the other two OLED sub-pixels, the corresponding gray-scale data are generated to the three OLED sub-pixels so as to drive the three OLED sub-pixels to display.
The application also discloses a display device driven by the driving method according to any one of the above, the display device comprises a plurality of pixel areas, each pixel area comprises three OLED sub-pixels and one electronic paper pixel, each OLED sub-pixel is provided with an independent anode, each electronic paper pixel comprises a first electrode, a second electrode and an electronic capsule, the display device comprises a data driving module and a gray-scale data acquisition judging output module, and the gray-scale data acquisition judging output module controls the driving display of the OLED sub-pixels and the electronic paper pixels according to the gray-scale data output by the data driving module.
Optionally, the display device includes a brightness detection module and a brightness compensation module, where the brightness detection module is connected with the data driving module and the brightness compensation module, the brightness compensation module is connected with the gray-scale data acquisition and judgment output module, the brightness detection module detects the actual display brightness, outputs a control signal to the brightness compensation module according to a comparison result of the actual display brightness and the display brightness of the corresponding gray scale, and controls the gray-scale data acquisition and judgment output module to output a driving voltage to the corresponding OLED sub-pixel or electronic paper pixel through a compensation value.
Optionally, the three OLED sub-pixels are respectively a red sub-pixel, a green sub-pixel and a blue sub-pixel, the area of the blue sub-pixel is larger than that of the red sub-pixel or the green sub-pixel, the three OLED sub-pixels are arranged in a triangle, and the electronic paper pixels are arranged in a column.
Optionally, the display device includes a current detection module, the current detection module detects a current value of each row of OLED subpixels and calculates to obtain a difference value of current values of two adjacent rows, and the brightness compensation module generates a brightness compensation value of a next row of pixels according to a comparison result of actual display brightness and display brightness corresponding to gray scale and the difference value of the current values of the two adjacent rows, and drives the pixels of the electronic paper.
Optionally, the electronic pixels are arranged between any two adjacent OLED sub-pixels along the scanning line direction, the first electrodes of the any two adjacent electronic paper pixels are spaced apart from each other along the data line direction, and the second electrodes are communicated with each other, wherein the second electrodes are common electrodes.
Compared with the existing OLED panel, the electronic paper pixels are added in the OLED panel, each OLED pixel is composed of three OLED sub-pixels with different colors and one electronic paper sub-pixel E, anodes of the OLED sub-pixels are independently controlled, the electronic paper sub-pixels E are also independently controlled by electrodes, and the electronic paper pixels are added to alternately display the electronic paper pixels and the OLED sub-pixels in different states, so that attenuation of the OLED sub-pixels is reduced, power consumption of the OLED panel is reduced, and service life is prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is evident that the figures in the following description are only some embodiments of the application, from which other figures can be obtained without inventive effort for a person skilled in the art. In the drawings:
Fig. 1 is a schematic flow chart of a driving method of a display device according to a first embodiment of the present application;
FIG. 2 is a schematic flow chart of a driving method according to a second embodiment of the present application;
FIG. 3 is a flow chart of a driving method according to a third embodiment of the present application;
Fig. 4 is a schematic view of a pixel structure of a display device according to a fourth embodiment of the present application;
fig. 5 is a schematic structural view of a display device according to a fifth embodiment of the present application;
fig. 6 is a schematic view of a pixel structure of a display device according to a fifth embodiment of the present application;
fig. 7 is a schematic structural view of a display device according to a sixth embodiment of the present application;
fig. 8 is a schematic structural view of a display device according to a seventh embodiment of the present application;
Fig. 9 is a schematic structural view of a display device according to an eighth embodiment of the present application.
The display device comprises 100 parts of a display device, 101 parts of a first area, 102 parts of a second area, 110 parts of a pixel area, 120 parts of an OLED sub-pixel, 121 parts of an anode, 122 parts of a cathode, 123 parts of an organic light emitting layer, 130 parts of an electronic paper pixel, 131 parts of a first electrode, 132 parts of an electronic capsule, 133 parts of a second electrode, 140 parts of an encapsulation layer, 150 parts of a flat layer, 160 parts of a data driving module, 170 parts of a gray level data acquisition and judgment output module, 180 parts of a brightness detection module, 190 parts of a brightness compensation module, 200 parts of a current detection module, 210 parts of a light intensity sensor.
Detailed Description
It is to be understood that the terminology used herein, the specific structural and functional details disclosed are merely representative for the purpose of describing particular embodiments, but that the application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
The application is described in detail below with reference to the attached drawings and alternative embodiments.
Example 1:
as a first embodiment of the present application, as shown in fig. 1, there is disclosed a driving method of a display device including a plurality of pixel regions each including three OLED sub-pixels and one electronic paper pixel, characterized by comprising the steps of:
s1, acquiring gray scale data of three OLED sub-pixels, and
S2, judging and comparing the gray-scale data of the three OLED sub-pixels, if the gray-scale data of the three OLED sub-pixels are the same, generating corresponding gray-scale data to the electronic paper pixels to drive the electronic paper pixels to display, and if the gray-scale data of any one OLED sub-pixel is different from the gray-scale data of the other two OLED sub-pixels, generating corresponding gray-scale data to the three OLED sub-pixels to drive the three OLED sub-pixels to display;
wherein the three OLED sub-pixels are different in color.
In the embodiment, three OLED sub-pixels and one electronic paper pixel are arranged in a pixel area, the electronic paper pixel (EPD) and the OLED sub-pixels are respectively and independently controlled by corresponding thin film transistors, the resolution and the refresh rate are respectively and independently designed, the design is carried out according to practical conditions, the fact that the OLED sub-pixels are used for a long time continuously can cause the reduction of service life is considered, the continuous use of the OLED sub-pixels is avoided by adding the electronic paper pixels to replace part of the working time of the OLED sub-pixels, in order to ensure the display effect, the gray-scale data of the three OLED sub-pixels are usually acquired firstly when the OLED sub-pixels are switched, the gray-scale data of the three OLED sub-pixels are judged and compared, if the gray-scale data of any two OLED sub-pixels are identical, namely the gray-scale data of the three OLED sub-pixels are identical, the corresponding gray-scale data are generated to the electronic paper pixels so as to drive the electronic paper pixels to display the electronic paper pixels, if the gray-scale data of any one OLED sub-pixel is different from the gray-scale data of other two OLED sub-pixels, the three OLED sub-pixels are driven to alternately display the gray-scale data of the OLED sub-pixels, and the gray-scale data of the OLED sub-pixels can be reduced when the OLED sub-pixels are different from the OLED sub-pixels, and the OLED sub-pixel is alternately displayed in the OLED sub-pixel, so that the gray-pixel is reduced, and the gray-pixel is different from the OLED sub-pixel is displayed, and the gray to have the gray-scale data.
Example 2:
As shown in fig. 2, as a second embodiment of the present application, further refinement and perfection of the first embodiment is provided, in consideration of a situation that there may be insufficient brightness at the time of displaying the OLED subpixels, in this problem, the present embodiment may increase the brightness of the OLED subpixels by activating the electronic paper pixels, which may replace not only the OLED subpixels for displaying but also the backlight, and increase the brightness of the OLED subpixels, the display device includes a brightness detection module and a brightness compensation module, the brightness detection module is connected to the brightness compensation module, and the brightness compensation module controls the light emitting brightness of the electronic paper pixels, and the step S2 includes:
S21, the brightness detection module detects and acquires the actual display brightness L1 after the light mixing of the three OLED sub-pixels, compares the actual display brightness with the display brightness L2 after the light mixing of the gray scale corresponding to the three OLED sub-pixels, and drives the three OLED sub-pixels to display if L1 is smaller than or equal to L2 and the gray scale data of any one OLED sub-pixel is different from the gray scale data of the other two OLED sub-pixels, and
S22, the brightness compensation module obtains a compensation value according to the difference value of the L1 and the L2, and controls the luminous brightness of the electronic paper pixel through the compensation value.
When the display device displays, the ideal value cannot be reached when the light emitted by the OLED reaches the display surface due to the film thickness or the temperature of the backlight, in this case, the light-emitting brightness of the organic light-emitting layer is generally increased at present, but the power consumption is further increased, the work of the OLED with higher power is easier to accelerate aging, and in the display of the OLED sub-pixels, the electronic paper pixels can be started according to the difference value between the actual brightness and the display brightness (ideal brightness) after the corresponding gray scale light mixing, the light-emitting brightness of the OLED sub-pixels is compensated through the electronic paper pixels, and the display effect is improved.
Further, it is also considered that when the power supply voltage is input to each row of OLED pixels, due to the effect of impedance, LEVDD power will be split to the previous row of OLED after the previous row is turned on, and the current is I1, then the power supply of the next row will not be LEVDD, but LEVDD-I1×r, and similarly, it will be known that each subsequent row will be so that the power supply voltage will be gradually reduced, resulting in uneven brightness display, and the OLED sub-pixels are along the data line direction of the OLED sub-pixels, and the display device is divided into a plurality of partitions, each partition includes at least one row of pixels, and the step S22 includes:
And obtaining a compensation value according to the difference value of L1 and L2 and the difference value of the current of the pixel in the upper row and the current of the pixel in the lower row, and controlling the luminous brightness of the pixel of the electronic paper through the compensation value.
The influence of impedance is considered, and meanwhile, the difference between the actual brightness and the ideal brightness is used for obtaining a corresponding compensation value, and the compensated brightness is more approximate to the ideal brightness.
Example 3:
as shown in fig. 3, as a third embodiment of the present application, the display device includes a light intensity sensor for detecting the brightness of ambient light, and the driving method further includes the steps of:
S3, detecting the brightness of external environment light, if the brightness value is larger than a preset brightness value, directly starting the electronic paper pixel, and closing the OLED sub-pixel, and if the brightness is smaller than or equal to the preset brightness value, executing the step S1 and the step S2;
Wherein, the electronic paper pixel is formed by using a color electronic paper material.
In this embodiment, the display device further includes a light intensity sensor, where the light intensity sensor is connected to the electronic paper pixels, the light intensity sensor detects brightness of ambient light, generates a corresponding driving voltage according to the brightness of the ambient light, and outputs the driving voltage to the electronic paper pixels, so that the electronic paper pixels in the pixel area emit light, when the brightness value of the ambient light is greater than a preset brightness value, the electronic paper pixels are directly turned on, and the OLED sub-pixels are turned off, if the brightness is less than or equal to the preset brightness value, the gray-scale data of the three OLED sub-pixels are determined and compared, and if the gray-scale data of any two OLED sub-pixels are the same, the corresponding gray-scale data are generated to the electronic paper pixels, so as to drive the electronic paper pixels to display, and if the gray-scale data of any one OLED sub-pixel is different from the gray-scale data of the other two OLED sub-pixels, the electronic paper pixels are driven to display, and when the brightness of the three OLED sub-pixels is insufficient, the electronic paper pixels can be turned on at the same time, so as to compensate the brightness of the OLED sub-pixels.
Example 4:
Referring to fig. 4, as a fourth embodiment of the present application, the foregoing first embodiment is further refined, but this embodiment is not in conflict with other embodiments, and may also be an extension or extension of other embodiments, and specifically, the display device includes a first area and a second area, where the first area is disposed around the second area, and the second area is a two-dimensional code area, that is, the second area corresponds to a specific area, where the specific area may be a fixed area or a variable area that is initially disposed, and the variable area may be analyzed and divided according to data fed back by different two-dimensional code pages, for example, in some pages, the two-dimensional code area is in the middle, and in some pages, the two-dimensional code is located in an upper middle, and the second area is obtained by analyzing data of different pages, where the driving method includes the steps of:
And S4, judging whether the current pixel belongs to a second area, if so, simultaneously starting the OLED sub-pixel and the electronic paper pixel, and if so, executing the steps S1 and S2.
In this embodiment, mainly considering that the panel is applied to some application scenes of the mobile phone, in daily life application of the mobile phone, for example, when a bus subway is sitting, or the mobile phone goes into or goes out of a visiting spot or a business super shopping payment, the mobile phone needs to be opened to pay or verify by using the two-dimensional code, and when the two-dimensional code area is verified, higher brightness is required, if the brightness is insufficient, corresponding equipment cannot be recognized, and the use experience of a user is affected, in addition, because the two-dimensional code area mainly shows black and white, the corresponding OLED sub-pixels can be closed, so that only the electronic paper pixels are opened, obviously, the electronic paper pixels are simply opened, and under the influence of ambient light, when the mobile phone is indoors, the brightness of the electronic paper pixels can be low, so as to affect the two-dimensional code recognition, so that whether the current pixels belong to a second area is judged, and if the current pixels belong to the second area, the brightness of the second area is simultaneously opened, and if the brightness of the second area is not, the OLED sub-pixels and the OLED pixels can still be driven according to the gray-scale data of the OLED sub-pixels in the second area, the second area is still, and the OLED sub-pixels can still be driven according to the gray scale data of the OLED pixels of the three sub-OLED pixels or the result to be driven to be displayed.
Example 5:
referring to fig. 5 and 6, as a fifth embodiment of the present application, the display device 100 in this embodiment may be driven by using the driving method described in any one of the embodiments, where the display device 100 includes a plurality of pixel areas 110, each pixel area 110 includes three OLED sub-pixels 120 and one electronic paper pixel 130, each OLED sub-pixel 120 is provided with a separate anode 121 and a common cathode 122, an organic light emitting layer 123 is disposed between the cathode 122 and the anode 121, the electronic paper pixel 130 includes a first electrode 131, a second electrode 133 and an electronic capsule 132, the display device 100 includes a data driving module 160 and a gray-scale data acquisition and judgment output module 170, and the gray-scale data acquisition and judgment output module 170 controls the driving display of the OLED sub-pixels 120 and the electronic paper pixel 130 according to the gray-scale data output by the data driving module 160, and by adding the electronic paper pixel 130 in the OLED panel, the OLED sub-pixels 120 and the OLED sub-pixels 120 can be alternately displayed in different OLED states under OLED panel states, thereby reducing the attenuation of the OLED sub-pixels 120.
The colors of the three OLED sub-pixels 120 are different, in general, the three OLED sub-pixels 120 are respectively a red sub-pixel R, a green sub-pixel G and a blue sub-pixel B, the area of the blue sub-pixel is larger than that of the red sub-pixel or the green sub-pixel, the three OLED sub-pixels 120 are arranged in a triangle, the electronic paper pixels 130 are arranged in a column, the sub-pixels RGB are arranged in a triangle, the electronic paper pixels 130E are arranged in a column, and the electronic paper sub-pixels between the two pixels can reach a common electronic paper capsule, so that the electronic paper is easier to attach, and the process difficulty is reduced.
Further, along the scanning line direction, the electronic pixels are arranged between any two adjacent OLED sub-pixels 120, along the data line direction, the first electrodes 131 of any two adjacent electronic paper pixels 130 are spaced apart from each other, and the second electrodes 133 are communicated with each other, wherein the second electrodes 133 are common electrodes, the electronic paper sub-pixels E of the two pixels are common electrodes, and the electronic capsules 132 are common, but the two lower first electrodes 131 are not common, and are independently arranged, so that the display of the pixels is facilitated, in addition, the OLED sub-pixels 120 also adopt the common electrodes as cathodes 122, the OLED sub-pixels 120 are provided with packaging layers 140, the packaging layers 140 are hollowed out corresponding to the electronic paper pixel 130 areas 110, and the hollow areas and the packaging layers 140 are filled with flat layers 150.
If the R/G/B data are the same, the sub-pixels of the electronic paper are turned on to display the same gray level, and the R/G/B sub-pixels are not required to emit light, so that the luminous time of the R/G/B is reduced during screen display, the service life of the R/G/B is prolonged, if the R/G/B data are different, the R/G/B normally emit light, namely the gray level is the same, the gray level is white after light mixing, the gray level is changed, the color is still white, and the brightness is changed, in addition, under strong light, in order to improve the display brightness, the luminous intensity of the R/G/B is improved, and the R/G/B keeps the original brightness unchanged by turning on the sub-pixels of the electronic paper under strong light, so that the service life of the electronic paper is prolonged.
Example 6:
as shown in fig. 7, as a further refinement of the fifth embodiment of the present application, the display device 100 includes a brightness detection module 180 and a brightness compensation module 190, where the brightness detection module 180 is connected to the data driving module 160 and the brightness compensation module 190, the brightness compensation module 190 is connected to the gray-scale data obtaining and judging output module 170, the brightness detection module 180 detects the actual display brightness, and outputs a control signal to the brightness compensation module 190 according to a comparison result between the actual display brightness and the display brightness of the corresponding gray-scale, and controls the gray-scale data obtaining and judging output module 170 to output a driving voltage to the corresponding OLED sub-pixel 120 or the electronic paper pixel 130 according to a compensation value.
The gray-scale data acquisition and judgment output module 170 acquires the gray-scale data output by the data driving module 160, the brightness detection module 180 acquires the brightness of the external environment, meanwhile acquires the gray-scale data output by the data driving module 160 and calculates the corresponding brightness, the compensation value is obtained according to the brightness value and fed back to the gray-scale data acquisition and judgment output module 170, the gray-scale data acquisition and judgment output module 170 generates new gray-scale data according to the compensation value and the gray-scale data comparison result and outputs the new gray-scale data to the corresponding electronic paper pixel 130, so that the brightness compensation of the electronic paper pixel 130 on the OLED sub-pixel 120 is realized, the brightness improvement is realized without increasing the driving voltage of the OLED, the power consumption is reduced, the attenuation of the OLED sub-pixel 120 is reduced, and the service life of the OLED panel is prolonged.
Further, considering that the OLED panel is affected by the line resistance R of the power supply line, the LEVDD power supply will be shunted to the OLED of the previous line after the previous line is turned on, and the current is I1, the power supply of the next line will not be LEVDD, but LEVDD-I1×r, and similarly, each line will be the same, that is, the power supply voltage will be gradually reduced, so as to cause uneven brightness display, in order to reduce the influence of the line resistance, the line resistance influence is also added when calculating the compensation value, specifically, the display device 100 includes a current detection module 200, the current detection module 200 detects the current value of each line OLED subpixel 120, and calculates and obtains the difference value of the current values of two adjacent lines, and the brightness compensation module 190 generates the brightness compensation value of the next line pixel according to the comparison result of the actual display brightness and the display brightness of the corresponding gray scale, and the difference value of the current values of the two adjacent lines, so as to drive the electronic paper pixel 130, and improve the accuracy of the compensation value.
Example 7:
As shown in fig. 8, as a seventh embodiment of the present application, the display device 100 includes a light intensity sensor for detecting the brightness of the ambient light, if the brightness value of the ambient light detected by the light intensity sensor is greater than the preset brightness value, the electronic paper pixel 130 is directly turned on and the OLED sub-pixels 120 are turned off, and if the brightness is less than or equal to the preset brightness value, the gray-scale data obtaining and judging output module 170 obtains the gray-scale data of the three OLED sub-pixels 120 and judges and compares the gray-scale data of the three OLED sub-pixels 120, if the gray-scale data of any two OLED sub-pixels 120 are the same, the corresponding gray-scale data is generated to the electronic paper pixel 130 to drive the electronic paper pixel 130 to display, and if the gray-scale data of any one OLED sub-pixel 120 is different from the gray-scale data of the other two OLED sub-pixels 120, the three OLED sub-pixels 120 are driven to display.
The electronic paper pixel 130 is formed by using a color electronic paper material, and when the OLED sub-pixel 120 is turned off, color display can be realized only when the electronic paper pixel 130 is turned on, and in addition, because the brightness is enough when the ambient light is strong, the electronic paper pixel 130 capable of displaying color is independently used, not only color display can be realized, but also power consumption can be reduced, and importantly, the OLED sub-pixel 120 can stop working, thereby reducing attenuation of the OLED sub-pixel 120.
Example 8:
As shown in fig. 9, as an eighth embodiment of the present application, unlike the above-mentioned embodiments, the present embodiment mainly considers that, because a part of the areas need to be maintained for high-brightness display, if the OLED sub-pixels 120 are in the same gray-scale data, the OLED sub-pixels 120 and the electronic paper pixels 130 are turned on at the same time, and therefore, in some areas, even if the OLED sub-pixels 120 are in the same gray-scale data, the electronic paper pixels 130 are still turned on, specifically, referring to fig. 5 and 9, the display device 100 includes a first area 101 and a second area 102, the first area 101 is arranged around the second area 102, the second area 102 is a two-dimensional code area, and it is determined whether the current pixel belongs to the second area 102, if the current pixel belongs to the second area 102, the OLED sub-pixels 120 and the electronic paper pixels 130 are turned on at the same time, if the first area 101 is in the gray-scale data, the gray-data acquisition and determination output module 170 acquires the gray-scale data of the three OLED sub-pixels 120, and determines and compares the gray-scale data of the three OLED sub-pixels 120, and if the two OLED sub-pixels 120 are in the same gray-scale data and the gray-scale data of any two OLED sub-pixels 120 are different from the gray-scale pixel 130, if the two OLED sub-pixels are different from the gray-scale pixel 120 are alternately, and the electronic paper pixels 120 are alternately driven, and if the gray-scale data is different from the gray-scale pixel 120 is different from the gray-scale pixel is displayed, and the gray-scale pixel is different from the gray-scale pixel is displayed.
It should be noted that, the limitation of each step in the present solution is not to be considered as limiting the sequence of steps on the premise of not affecting the implementation of the specific solution, that is, the steps written in the previous step may be executed before, or executed after, or even executed simultaneously, so long as the implementation of the present solution is possible, all the steps should be considered as falling within the protection scope of the present application. The inventive concept of the present application can form a very large number of embodiments, but the application documents are limited in size and cannot be listed one by one, so that on the premise of no conflict, the above-described embodiments or technical features can be arbitrarily combined to form new embodiments, and after the embodiments or technical features are combined, the original technical effects can be enhanced.
The above description of the application in connection with specific alternative embodiments is further detailed and it is not intended that the application be limited to the specific embodiments disclosed. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the application, and these should be considered to be within the scope of the application.
Claims (9)
1. A driving method of a display device including a plurality of pixel regions each including three OLED sub-pixels and one electronic paper pixel, the driving method comprising the steps of:
acquiring gray-scale data of three OLED sub-pixels, and
Judging and comparing the gray-scale data of the three OLED sub-pixels, if the gray-scale data of the three OLED sub-pixels are the same, generating corresponding gray-scale data to the electronic paper pixels to drive the electronic paper pixels to display, and if the gray-scale data of any one OLED sub-pixel is different from the gray-scale data of the other two OLED sub-pixels, generating corresponding gray-scale data to the three OLED sub-pixels to drive the three OLED sub-pixels to display;
wherein the colors of the three OLED sub-pixels are different;
the display device comprises a brightness detection module and a brightness compensation module, wherein the brightness detection module is connected with the brightness compensation module, the brightness compensation module controls the luminous brightness of the electronic paper pixel, the judgment compares the gray-scale data of the three OLED sub-pixels, if the gray-scale data of the three OLED sub-pixels are the same, the corresponding gray-scale data are generated to the electronic paper pixel so as to drive the electronic paper pixel to display, if the gray-scale data of any one OLED sub-pixel are different from the gray-scale data of the other two OLED sub-pixels, the corresponding gray-scale data are generated to the three OLED sub-pixels, and the step of driving the three OLED sub-pixels to display comprises the following steps:
the brightness detection module detects and acquires the actual display brightness L1 after the three OLED sub-pixels are mixed, compares the actual display brightness with the display brightness L2 after the three OLED sub-pixels are corresponding to the gray scale mixed, and drives the three OLED sub-pixels to display if the L1 is smaller than or equal to the L2 and the gray scale data of any one OLED sub-pixel is different from the gray scale data of the other two OLED sub-pixels, and
And the brightness compensation module obtains a compensation value according to the difference value of the L1 and the L2, and controls the luminous brightness of the electronic paper pixel through the compensation value.
2. The driving method according to claim 1, wherein the display device includes a light intensity sensor for detecting a brightness of the ambient light, the driving method further comprising the steps of:
Detecting the brightness of external environment light, if the brightness value is larger than a preset brightness value, directly starting an electronic paper pixel, and closing an OLED sub-pixel, if the brightness is smaller than or equal to the preset brightness value, acquiring the gray-scale data of the three OLED sub-pixels, judging and comparing the gray-scale data of the three OLED sub-pixels, if the gray-scale data of the three OLED sub-pixels are the same, generating corresponding gray-scale data to the electronic paper pixel to drive the electronic paper pixel to display, and if the gray-scale data of any one OLED sub-pixel is different from the gray-scale data of the other two OLED sub-pixels, generating corresponding gray-scale data to the three OLED sub-pixels to drive the three OLED sub-pixels to display;
Wherein, the electronic paper pixel is formed by using a color electronic paper material.
3. The driving method of claim 1, wherein the display device is divided into a plurality of partitions along a data line direction of the OLED subpixels, each partition including at least one row of pixels, the luminance compensation module obtains a compensation value according to a difference between L1 and L2, and the step of controlling the light emitting luminance of the electronic paper pixels by the compensation value comprises:
And obtaining a compensation value according to the difference value of L1 and L2 and the difference value of the current of the pixel in the upper row and the current of the pixel in the lower row, and controlling the luminous brightness of the pixel of the electronic paper through the compensation value.
4. The driving method according to claim 1, wherein the display device includes a first region and a second region, the first region being disposed around the second region, the second region being a two-dimensional code region, the driving method comprising the steps of:
And if the current pixel belongs to the second area, the OLED sub-pixels and the electronic paper pixels are started at the same time, if the current pixel belongs to the first area, the gray-scale data of the three OLED sub-pixels are acquired, the gray-scale data of the three OLED sub-pixels are judged and compared, if the gray-scale data of the three OLED sub-pixels are the same, the corresponding gray-scale data are generated to the electronic paper pixels so as to drive the electronic paper pixels to display, and if the gray-scale data of any one OLED sub-pixel are different from the gray-scale data of the other two OLED sub-pixels, the corresponding gray-scale data are generated to the three OLED sub-pixels so as to drive the three OLED sub-pixels to display.
5. A display device driven by the driving method according to any one of claims 1 to 4, wherein the display device comprises a plurality of pixel areas, each pixel area comprises three OLED sub-pixels and one electronic paper pixel, each OLED sub-pixel is provided with an independent anode, each electronic paper pixel comprises a first electrode, a second electrode and an electronic capsule, the display device comprises a data driving module and a gray-scale data acquisition and judgment output module, and the gray-scale data acquisition and judgment output module controls driving display of the OLED sub-pixels and the electronic paper pixels according to gray-scale data output by the data driving module.
6. The display device according to claim 5, wherein the display device comprises a brightness detection module and a brightness compensation module, the brightness detection module is respectively connected with the data driving module and the brightness compensation module, the brightness compensation module is connected with the gray-scale data acquisition and judgment output module, the brightness detection module detects the actual display brightness, and outputs a control signal to the brightness compensation module according to the comparison result of the actual display brightness and the display brightness of the corresponding gray scale, and the gray-scale data acquisition and judgment output module is controlled by the compensation value to output a driving voltage to the corresponding OLED sub-pixel or electronic paper pixel.
7. The display device of claim 5, wherein the three OLED subpixels are respectively a red subpixel, a green subpixel and a blue subpixel, the blue subpixel has an area larger than the red subpixel or the green subpixel, the three OLED subpixels are arranged in a triangle, and the electronic paper pixels are arranged in a column.
8. The display device according to claim 6, wherein the display device comprises a current detection module, the current detection module detects a current value of each row of OLED subpixels and calculates a difference value of current values of two adjacent rows, and the brightness compensation module generates a brightness compensation value of a next row of pixels according to a comparison result of actual display brightness and display brightness corresponding to gray scale and the difference value of the current values of the two adjacent rows, and drives the electronic paper pixels.
9. The display device according to claim 7, wherein the electronic paper pixels are arranged between any adjacent two of the OLED subpixels in the scanning line direction, first electrodes of the any adjacent two of the electronic paper pixels are spaced apart from each other in the data line direction, and the second electrodes are communicated with each other;
wherein the second electrode is a common electrode.
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