CN109658894A - The automatic system and method for searching liquid crystal display panel over-driving look-up table - Google Patents
The automatic system and method for searching liquid crystal display panel over-driving look-up table Download PDFInfo
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- CN109658894A CN109658894A CN201910105798.9A CN201910105798A CN109658894A CN 109658894 A CN109658894 A CN 109658894A CN 201910105798 A CN201910105798 A CN 201910105798A CN 109658894 A CN109658894 A CN 109658894A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000004044 response Effects 0.000 claims abstract description 23
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 238000004458 analytical method Methods 0.000 claims abstract description 9
- 238000013523 data management Methods 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000012163 sequencing technique Methods 0.000 description 2
- 241001062009 Indigofera Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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- 230000001550 time effect Effects 0.000 description 1
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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
- G09G3/36—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 liquid crystals
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Abstract
The present invention relates to a kind of automatic system and methods for searching liquid crystal display panel over-driving look-up table.The system includes: liquid crystal display panel, photodiode, DAQ capture card and computer；The display picture and over-driving look-up table of liquid crystal display panel are provided by computer；Photodiode measures the brightness changed over time between each grayscale of the liquid crystal display panel；DAQ capture card acquires the measurement data of the photodiode；Computer carries out Data Management Analysis to the measurement data and judges whether the response time corresponding to current over-driving look-up table meets scheduled requirement, when being unsatisfactory for scheduled require, computer generates new over-driving look-up table according to scheduled algorithm to be supplied to liquid crystal display panel instead of current over-driving look-up table.The present invention also provides the automatic methods for searching liquid crystal display panel over-driving look-up table.The present invention can search automatically optimal over-driving look-up table by computer, can save personnel and adjust the time of over-driving look-up table, while substantially reduce to the skill requirement of operator.
Description
Technical field
The present invention relates to field of display technology, more particularly to a kind of automatic system for searching liquid crystal display panel over-driving look-up table
And method.
Background technique
With the development of display technology, the planes such as liquid crystal display (Liquid Crystal Display, LCD) display dress
It sets because having many advantages, such as that high image quality, power saving, fuselage is thin and has a wide range of application, and is widely used in mobile phone, TV, a number
The various consumer electrical products such as word assistant, digital camera, laptop, desktop computer, become the master in display device
Stream.
Due to the liquid crystal characteristic of liquid crystal display panel, the response speed of liquid crystal is always the problem of liquid crystal display panel needs to be improved.For
Improve the display effect of dynamic menu, reduce dynamic motion blur phenomenon and response time, frequently with overdriving on liquid crystal display panel
(OD, over drive) technology improves the response speed of intermediate grayscale.The technical principle: in order to make former frame (front
Frame) shorten to the response time of target frame (target frame), driven by being crossed at frame of overdriving (OD frame) to one
Dynamic voltage allows liquid crystal quickly to reach transformation angle.
Fig. 1 is the schematic illustration that the response time is reduced using overdrive technique, for before using overdrive technique on the left of Fig. 1
The response speed schematic diagram of panel grayscale, the right side Fig. 1 is using the response speed schematic diagram of overdrive technique rear panel grayscale.Such as
On the left of Fig. 1, when image is converted to next frame n-th frame by the (n-1)th frame of former frame, the grayscale value of image increases, but due to liquid crystal
Reaction speed is slower, needs a longer reaction time, and it is pre- that the grayscale value of image can not quickly reach next frame image
The brightness of phase；On the right side of Fig. 1, the reaction speed of liquid crystal is accelerated using overdrive technique, by next frame n-th frame image
Grayscale value is modified, and provides a grayscale value of overdriving to n-th frame image, the (n-1)th frame and n-th frame are added in the electricity at liquid crystal both ends
Pressure difference increases, and then improves liquid crystal response speed, shortens the reaction time of liquid crystal.
The time for shortening liquid crystal rotation by using overdrive technique in the prior art makes to show that picture is quickly converted as mesh
Mark picture.Source grayscale and target gray scale difference, corresponding grayscale difference of overdriving.It is converted between any grayscale value to realize
It all overdrives and improves response speed, need to preset an over-driving look-up table, so as to according to source grayscale and target ash
Rank finds grayscale of overdriving from over-driving look-up table, and then with the corresponding driving voltage driving liquid crystal overturning of grayscale of overdriving, real
Now overdrive.And the mode for obtaining over-driving look-up table at present is personnel by dynamic menu effect on observation panel, is adjusted manually
Whole over-driving look-up table, the adjustment mode to adjustment personnel qualification it is more demanding, while adjust process repeat, expend when
Between it is long.
Summary of the invention
Therefore, the purpose of the present invention is to provide a kind of automatic system for searching liquid crystal display panel over-driving look-up table and sides
Method, the personnel that solve the problems, such as adjust over-driving look-up table, and consuming time is long.
To achieve the above object, the present invention provides a kind of automatic system for searching liquid crystal display panel over-driving look-up table, packets
It includes: liquid crystal display panel, photodiode, DAQ capture card and computer, DAQ capture card described in the photodiode communication connection,
The dataphone connects the liquid crystal display panel and DAQ capture card；The display picture of the liquid crystal display panel and overdriving is looked into
Table is looked for be provided by the computer；The photodiode measure between each grayscale of the liquid crystal display panel change over time it is bright
Degree；The DAQ capture card acquires the measurement data of the photodiode；The institute that the computer obtains the DAQ capture card
Measurement data is stated to carry out Data Management Analysis and judge that the computer is supplied to the current lookup of overdriving of the liquid crystal display panel
Whether the response time corresponding to table meets scheduled requirement, and when being unsatisfactory for scheduled require, the computer is according to scheduled
Algorithm generates new over-driving look-up table to be supplied to the liquid crystal display panel instead of current over-driving look-up table.
Wherein, the over-driving look-up table includes the over-driving look-up table of red sub-pixel.
Wherein, the over-driving look-up table includes the over-driving look-up table of green sub-pixels.
Wherein, the over-driving look-up table includes the over-driving look-up table of blue subpixels.
The present invention also provides a kind of automatic methods for searching liquid crystal display panel over-driving look-up table, comprising:
Step 10 provides display picture and current over-driving look-up table to liquid crystal display panel by computer；
Step 20 measures the brightness changed over time between each grayscale of the liquid crystal display panel by photodiode；
Step 30, the measurement data that the photodiode is acquired by DAQ capture card；
Step 40, the computer carry out Data Management Analysis to the measurement data that the DAQ capture card obtains and sentence
The computer that breaks be supplied to the response time corresponding to the current over-driving look-up table of the liquid crystal display panel whether meet it is predetermined
Requirement；
Step 50, when being unsatisfactory for scheduled require, the computer generates new lookup of overdriving according to scheduled algorithm
Table is to be supplied to the liquid crystal display panel, return step 10 instead of current over-driving look-up table；
Step 60, when meeting scheduled require, the computer saves current over-driving look-up table, terminates current automatic
Search the process of liquid crystal display panel over-driving look-up table.
Wherein, the over-driving look-up table includes the over-driving look-up table of red sub-pixel.
Wherein, the over-driving look-up table includes the over-driving look-up table of green sub-pixels.
Wherein, the over-driving look-up table includes the over-driving look-up table of blue subpixels.
Wherein, the over-driving look-up table of green sub-pixels is set as current over-driving look-up table first, executes step
10 to 60, obtain the over-driving look-up table for meeting the green sub-pixels of scheduled requirement；Then, overdriving red sub-pixel
The over-driving look-up table of look-up table or blue subpixels is set as current over-driving look-up table, execution step 10 to 60, phase
It should obtain meeting the over-driving look-up table of the red sub-pixel of scheduled requirement or the over-driving look-up table of blue subpixels.
To sum up, the system and method for automatic lookup liquid crystal display panel over-driving look-up table of the invention can be automatic by computer
Optimal over-driving look-up table is searched, the time that personnel adjust over-driving look-up table can be saved, while to the experience of operator
It is required that substantially reducing.
Detailed description of the invention
With reference to the accompanying drawing, by the way that detailed description of specific embodiments of the present invention, technical solution of the present invention will be made
And other beneficial effects are apparent.
In attached drawing,
Fig. 1 is overdrive technique schematic illustration；
Fig. 2 is the structural block diagram of automatic one preferred embodiment of system for searching liquid crystal display panel over-driving look-up table of the present invention；
Fig. 3 is the flow chart of automatic one preferred embodiment of method for searching liquid crystal display panel over-driving look-up table of the present invention.
Specific embodiment
It referring to fig. 2, is the knot of automatic one preferred embodiment of system for searching liquid crystal display panel over-driving look-up table of the present invention
Structure block diagram, it is described photosensitive mainly including liquid crystal display panel 1, photodiode (photodiode) 2, DAQ capture card 3 and computer 4
DAQ capture card 3 described in 2 communication connection of diode, liquid crystal display panel 1 and DAQ capture card 3 described in 4 communication connection of computer；Liquid
The over-driving look-up table of crystal panel 1 needs to be automatically adjusted by this system, and photodiode 2 can be with liquid crystal display panel 1
Display surface is oppositely arranged, and the quantity and overall structure of photodiode 2 are configured to can be by the bright of picture shown by liquid crystal display panel 1
Degree is converted into electric signal and carries out electric signal by DAQ (data acquisition) capture card 3 as data-signal in conjunction with corresponding circuit
The automatic search procedure of the over-driving look-up table of liquid crystal display panel 1 can be performed by operation pre-set programs for acquisition, computer 4.This system
The brightness changed over time between each grayscale of liquid crystal display panel 4, the acquisition measurement number of DAQ capture card 3 are measured by photodiode 2
According to computer 4 carries out Data Management Analysis and controls grayscale shown by the picture of liquid crystal display panel 4, and new mistake can be generated
Drive look-up table.
The display picture and over-driving look-up table of liquid crystal display panel 1 are provided by the computer 4, and computer 4 is according to pre-set programs
The corresponding display picture for detecting gray-scale response time is provided to liquid crystal display panel 1, it can also be according to pre-set programs to liquid crystal display panel 1
New over-driving look-up table is provided to rewrite the over-driving look-up table of liquid crystal display panel 1；Liquid crystal display panel 1 is provided according to computer 4
Over-driving look-up table when showing the corresponding display picture for detecting gray-scale response time, the photodiode 2 measures institute
State the brightness changed over time between each grayscale of liquid crystal display panel 1；The DAQ capture card 3 acquires the survey of the photodiode 2
Measure data；The computer 4 carries out described in Data Management Analysis and judgement the measurement data that the DAQ capture card 3 obtains
Computer 4 is supplied to whether the response time corresponding to the current over-driving look-up table of the liquid crystal display panel 1 meets scheduled want
It asks, when being unsatisfactory for scheduled require, the computer 4 generates new over-driving look-up table according to scheduled algorithm to replace currently
Over-driving look-up table be supplied to the liquid crystal display panel 4.It can use this system to measure liquid crystal display panel 1 repeatedly, until
Find one meet pre-provisioning request over-driving look-up table when until, over-driving look-up table at this time can be used as optimal overdrive
Look-up table is saved.
Since the over-driving look-up table of tri- sub-pixel of R, G, B needs to be divided into three over-driving look-up tables, three are overdrived
It needs to be mutually matched between look-up table and is just able to achieve dynamic menu and does not trail, do not drag color, therefore first provide green sub- picture by computer 4
The over-driving look-up table of element, after the over-driving look-up table that satisfactory green sub-pixels are found by automatic search program, with
The response time that the over-driving look-up table of green sub-pixels is realized is standard as scheduled requirement, then by searching journey automatically
Sequence finds the over-driving look-up table and blue subpixels of the red sub-pixel to match with the over-driving look-up table of green sub-pixels
Over-driving look-up table, after the over-driving look-up table for first looking for satisfactory green sub-pixels, search red sub-pixel
Over-driving look-up table and the sequencings of over-driving look-up table of blue subpixels can arbitrarily select.
Referring to Fig. 3, for the stream of automatic one preferred embodiment of method for searching liquid crystal display panel over-driving look-up table of the present invention
Cheng Tu, this method can be implemented based on the system of automatic lookup liquid crystal display panel over-driving look-up table of the invention, be specifically included that
Step 10 provides display picture and current over-driving look-up table to liquid crystal display panel by computer；
Step 20 measures the brightness changed over time between each grayscale of the liquid crystal display panel by photodiode；It is logical
The variation of display picture is crossed, liquid crystal display panel changes between each grayscale, and when gray scale variation generates brightness change, by photodiode
The brightness changed over time is measured, thus by the measurement data of photodiode it can be concluded that the response time；
Step 30, the measurement data that the photodiode is acquired by DAQ capture card；
Step 40, the computer carry out Data Management Analysis to the measurement data that the DAQ capture card obtains and sentence
The computer that breaks be supplied to the response time corresponding to the current over-driving look-up table of the liquid crystal display panel whether meet it is predetermined
Requirement；
Step 50, when being unsatisfactory for scheduled require, the computer generates new lookup of overdriving according to scheduled algorithm
Table is to be supplied to the liquid crystal display panel, return step 10 instead of current over-driving look-up table；
Step 60, when meeting scheduled require, the computer saves current over-driving look-up table, terminates current automatic
Search the process of liquid crystal display panel over-driving look-up table.
According to the automatic method for searching liquid crystal display panel over-driving look-up table of the invention, shown by computer control liquid crystal display panel picture
Show, give liquid crystal display panel one current over-driving look-up table, liquid crystal display panel is overdrived according to the current over-driving look-up table
Display；The brightness of liquid crystal display panel picture changed over time is measured by photodiode, DAQ capture card acquires measurement data,
Computer carries out Data Management Analysis and to judge whether response time that the current over-driving look-up table is reflected meets pre-
Fixed requirement, if the requirements are not met, and computer can recalculate new over-driving look-up table and effect by pre-set programs
On liquid crystal display panel, again by the new lookup of overdriving of photodiode measurement, DAQ capture card acquisition data, computer for analysis
The response time effect of table.Repeatedly, the over-driving look-up table of pre-provisioning request is met until finding, computer can be by this mistake
Driving look-up table saves as optimal over-driving look-up table.Drive was opened since over-driving look-up table is divided into tri- sub-pixel three of R, G, B
Dynamic look-up table, therefore searched and overdrived automatically by computer according to the automatic method for searching liquid crystal display panel over-driving look-up table of the invention
When look-up table, after can first finding the over-driving look-up table of satisfactory green sub-pixels, driven with crossing for green sub-pixels
The response time that dynamic look-up table is realized is standard as scheduled requirement, then is found and the sub- picture of green by automatic search program
The over-driving look-up table for the red sub-pixel that the over-driving look-up table of element matches and the over-driving look-up table of blue subpixels, it is first
After the over-driving look-up table for first finding satisfactory green sub-pixels, the over-driving look-up table and indigo plant of red sub-pixel are searched
The sequencing of the over-driving look-up table of sub-pixels can be selected arbitrarily.
To sum up, the system and method for automatic lookup liquid crystal display panel over-driving look-up table of the invention can be automatic by computer
Optimal over-driving look-up table is searched, the time that personnel adjust over-driving look-up table can be saved, while to the experience of operator
It is required that substantially reducing.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding changes and modifications are made in design, and all these change and modification all should belong to the appended right of the present invention
It is required that protection scope.
Claims (9)
1. a kind of automatic system for searching liquid crystal display panel over-driving look-up table characterized by comprising liquid crystal display panel, photosensitive two
Pole pipe, DAQ capture card and computer, DAQ capture card described in the photodiode communication connection, the dataphone connect institute
State liquid crystal display panel and DAQ capture card；The display picture and over-driving look-up table of the liquid crystal display panel are provided by the computer；
The photodiode measures the brightness changed over time between each grayscale of the liquid crystal display panel；The DAQ capture card acquisition
The measurement data of the photodiode；The computer carries out at data the measurement data that the DAQ capture card obtains
Reason is analyzed and judges that the computer is supplied to the response time corresponding to the current over-driving look-up table of the liquid crystal display panel and is
No to meet scheduled requirement, when being unsatisfactory for scheduled require, the computer generates new overdriving according to scheduled algorithm and looks into
Table is looked for be supplied to the liquid crystal display panel instead of current over-driving look-up table.
2. the automatic system for searching liquid crystal display panel over-driving look-up table as described in claim 1, which is characterized in that described cross is driven
Dynamic look-up table includes the over-driving look-up table of red sub-pixel.
3. the automatic system for searching liquid crystal display panel over-driving look-up table as described in claim 1, which is characterized in that described cross is driven
Dynamic look-up table includes the over-driving look-up table of green sub-pixels.
4. the automatic system for searching liquid crystal display panel over-driving look-up table as described in claim 1, which is characterized in that described cross is driven
Dynamic look-up table includes the over-driving look-up table of blue subpixels.
5. a kind of automatic method for searching liquid crystal display panel over-driving look-up table characterized by comprising
Step 10 provides display picture and current over-driving look-up table to liquid crystal display panel by computer；
Step 20 measures the brightness changed over time between each grayscale of the liquid crystal display panel by photodiode；
Step 30, the measurement data that the photodiode is acquired by DAQ capture card；
Step 40, the computer carry out Data Management Analysis to the measurement data that the DAQ capture card obtains and judge institute
It states computer and is supplied to whether the response time corresponding to the current over-driving look-up table of the liquid crystal display panel meets scheduled want
It asks；
Step 50, when being unsatisfactory for scheduled require, the computer according to scheduled algorithm generate new over-driving look-up table with
The liquid crystal display panel, return step 10 are supplied to instead of current over-driving look-up table；
Step 60, when meeting scheduled require, the computer saves current over-driving look-up table, terminates current automatic search
The process of liquid crystal display panel over-driving look-up table.
6. the automatic method for searching liquid crystal display panel over-driving look-up table as claimed in claim 5, which is characterized in that described cross is driven
Dynamic look-up table includes the over-driving look-up table of red sub-pixel.
7. the automatic method for searching liquid crystal display panel over-driving look-up table as claimed in claim 5, which is characterized in that described cross is driven
Dynamic look-up table includes the over-driving look-up table of green sub-pixels.
8. the automatic method for searching liquid crystal display panel over-driving look-up table as claimed in claim 5, which is characterized in that described cross is driven
Dynamic look-up table includes the over-driving look-up table of blue subpixels.
9. the automatic method for searching liquid crystal display panel over-driving look-up table as claimed in claim 5, which is characterized in that first will be green
The over-driving look-up table of sub-pixels is set as current over-driving look-up table, executes step 10 to 60, obtains meeting scheduled
It is required that green sub-pixels over-driving look-up table；Then, by the over-driving look-up table of red sub-pixel or blue subpixels
Over-driving look-up table be set as current over-driving look-up table, execute step 10 to 60, accordingly obtain meeting scheduled requirement
Red sub-pixel over-driving look-up table or blue subpixels over-driving look-up table.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110428787A (en) * | 2019-07-23 | 2019-11-08 | 深圳市华星光电技术有限公司 | Over-driving look-up table establishes system and method for building up |
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| CN101256748A (en) * | 2007-02-28 | 2008-09-03 | 乐金显示有限公司 | Device for automatically setting overdrive lookup table of liquid crystal display device and control method thereof |
| CN103187039A (en) * | 2012-01-02 | 2013-07-03 | 联发科技股份有限公司 | Overdrive device and overdrive method |
| CN108039155A (en) * | 2017-12-28 | 2018-05-15 | 深圳市华星光电技术有限公司 | The method for obtaining the over-driving look-up table of liquid crystal display |
-
2019
- 2019-02-01 CN CN201910105798.9A patent/CN109658894A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256748A (en) * | 2007-02-28 | 2008-09-03 | 乐金显示有限公司 | Device for automatically setting overdrive lookup table of liquid crystal display device and control method thereof |
| CN103187039A (en) * | 2012-01-02 | 2013-07-03 | 联发科技股份有限公司 | Overdrive device and overdrive method |
| CN108039155A (en) * | 2017-12-28 | 2018-05-15 | 深圳市华星光电技术有限公司 | The method for obtaining the over-driving look-up table of liquid crystal display |
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| CN110428787A (en) * | 2019-07-23 | 2019-11-08 | 深圳市华星光电技术有限公司 | Over-driving look-up table establishes system and method for building up |
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Application publication date: 20190419 |