CN108648707A - P-GAMMA Self-regulation track method and apparatus based on middle large scale module - Google Patents
P-GAMMA Self-regulation track method and apparatus based on middle large scale module Download PDFInfo
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- CN108648707A CN108648707A CN201810410592.2A CN201810410592A CN108648707A CN 108648707 A CN108648707 A CN 108648707A CN 201810410592 A CN201810410592 A CN 201810410592A CN 108648707 A CN108648707 A CN 108648707A
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- module
- gamma
- flicker
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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
-
- 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
Abstract
The P GAMMA Self-regulation track method and apparatus based on middle large scale module that the invention discloses a kind of, the method includes：Configure Flicker parameters, P Gamma adjustment parameters；Configuration each of module is tied up a little and corresponding register address；VCOM registers are adjusted, until searching the corresponding VCOM values of minimum Flicker values；A progress Gamma adjustings are tied up to each of module successively, in Gamma adjustment processes, under the premise of keeping the symmetry of positive/negative-pressure, adjusts this and tie up a little corresponding forward voltage values V+ and negative voltage value V-, cycle executes, until the brightness value of module is in object brightness error range；Readback is verified；Execute OTP burnings.Described device includes PC, adjustment PG, picture inspection PG, optical measuring instrument and module.The present invention has and can quantify the percent of pass of gray-scale intensity, i.e. brightness meets under conditions of Gamma2.2 curves and error be ± 0.2, the percent of pass of complete 255 gray-scale intensity.The experimental results showed that the present apparatus has the characteristic that governing speed is fast, brightness percent of pass is high.
Description
Technical field
The present invention relates to the display of liquid crystal module and testing fields, in particular to a kind of P- based on middle large scale module
GAMMA Self-regulation track method and apparatus.
Background technology
In the production process of middle large scale LVDS and VBYONE modules, factory generally requires the Flicker to module, white
Balance and gamma curve are adjusted, to achieve the purpose that preferably to restore color, promote image quality.Due between different modules
There is differences to influence image quality if all modules all easy to produce Flicker, colour cast using identical adjusting data.
Currently, the adjusting process that uses of industry for：(1) engineer manually adjusts out one group of experience number on print module
According to being then burnt in process of production in all modules, this adjusting process is due to actual variance existing for screen itself, portion
Split screen easy tos produce the phenomenon that Flicker, colour cast；(2) every screen is adjusted.But it is too low, accurate because manually adjusting efficiency
True property and consistency are poor, so the method for generally use adjust automatically.Existing adjust automatically mode, due to efficiency and accuracy
The reason of, Flicker data are generally also only adjusted, and Gamma still uses fixed data.In this manner, module
Flicker can adjust very well, and Gamma due to the use of be fixed data, because of the actual variance of screen itself, part screen is also
It is that will produce the image quality problem such as colour cast.
Invention content
In view of the deficiencies of the prior art, the object of the present invention is to provide it is a kind of efficiently, steadily automatically adjust LVDS and
The P-GAMMA Self-regulation track method and apparatus based on middle large scale module of VBYONE modules Flicker and Gamma.
To achieve the above object, a kind of Self-regulation track sides P-GAMMA based on middle large scale module designed by the present invention
Method is characterized in that, is included the following steps：
1) configuration Flicker parameters, P-Gamma adjustment parameters；
2) configuration each of module is tied up a little and corresponding register address；
3) Flicker parameters are parsed, VCOM registers are adjusted, until searching the corresponding VCOM values of minimum Flicker values；
4) P-Gamma adjustment parameters are parsed, a progress Gamma adjustings, Gamma adjustment processes are tied up to each of module successively
In, it under the premise of keeping the symmetry of positive/negative-pressure, adjusts this and ties up a little corresponding forward voltage values V+ and negative voltage value V-, recycle
It executes, until the brightness value of module is in object brightness error range；
5) whether the Flicker values of readback verification module are to go to step 6) in target Flicker error ranges,
Otherwise it is done according to reading back result and finely tunes the Flicker values up to module, brightness value in object brightness error range；
6) OTP burnings are executed, by the VCOM registers after adjusting, each forward voltage values V+ and negative voltage value tied up a little
V- is cured in the EEProm of module IC.
Preferably, the module large-sized LVDS modules or VBYONE modules in being.
Preferably, the method that VCOM registers are adjusted in the step 2) is binary chop algorithm.
Preferably, the method that Gamma is adjusted in the step 4) is to forward voltage values V+ and negative voltage value V- with phase
Increase simultaneously with size or reduces simultaneously.
Preferably, the method that Gamma is adjusted in the step 4) is to forward voltage values V+ and negative voltage value V- with phase
Increase side reduction with a size pair side or a side reduces a side and increases.
Preferably, the method that Gamma is adjusted in the step 4) is to the forward voltage values V+ when adjusting the first round and to bear
Increased simultaneously with same size to voltage value V- or reduced simultaneously, increased with a same size pair side in the second wheel fine tuning
One side reduces or a side reduces a side and increases.
Preferably, the brightness value of module refers to the module brightness after adjusting in object brightness error range in the step 4)
Value and the difference of Gamma2.2 curves are in allowable range of error.
A kind of device for realizing the above-mentioned P-GAMMA Self-regulation track methods based on middle large scale module, special character exist
In, including PC, adjustment PG, picture inspection PG, optical measuring instrument and module；
The PC：For sending Flicker parameters, P-Gamma adjustment parameters to adjustment PG, lighting-up equipment is controlled to module
Grayscale pictorial information is transmitted, the brightness value of control optical measuring instrument acquisition module adjusts ginseng according to Flicker parameters, P-Gamma
Number control adjustment PG adjusts VCOM registers, forward voltage values V+ and the negative voltage value V- of module, control point after the completion of adjusting
Lamp apparatus executes OTP burnings；
The adjustment PG：For configuring Flicker parameters, P-Gamma adjustment parameters, the forward voltage of module (5) is adjusted
Value V+ and negative voltage value V-, and execute OTP burnings；
The picture checks PG：For transmitting grayscale pictorial information to module；
The optical measuring instrument：Brightness value for acquiring module is sent to PC；
The module：For showing grayscale picture letter according to VCOM registers, forward voltage values V+ and negative voltage value V-
Breath.
Further, adjustment result is transmitted to PC CIM systems by the PC.
Further, the module large-sized LVDS modules or VBYONE modules in being, the adjustment PG with draw
Face checks that PG is connect by TPC/TP interfaces with PC (1) respectively, and the PC is connect with optical measuring instrument by RS232 interface.
The beneficial effects of the present invention are：
(1) present invention, which has, can quantify the percent of pass of gray-scale intensity, i.e., brightness meet Gamma2.2 curves and error be ±
Under conditions of 0.2, the percent of pass of complete 255 gray-scale intensity.The experimental results showed that the present apparatus is with governing speed, fast, brightness passes through
The high characteristic of rate.
(2) regulating time of the present invention is short, and picture checks PG and the one-to-one mode of module, completes (7 pairs of the time adjusted
The grayscale that Gamma positive/negative-pressures define is unit) it is apparently higher than the regulating time of conventional method.
(3) present invention uses hardware and software platform software, keeps maximum flexibility, correction coefficient is all configurable, and IC parameters are complete
Portion is configurable；Keep maximum portability, compatible all mainstream PG equipment；Keep maximum opening, the seating surface of new IC
To user, it is only necessary to upgrade script and configuration file.
(4) present invention is easy to operate, and Flicker, brightness percent of pass are high, and testing efficiency is high, just
The large-scale use in factory.
Description of the drawings
Fig. 1 is the block diagram of LVDS vision signals automatic testing equipment of the present invention.
In figure：PC1, adjustment PG2, picture check PG3, optical measuring instrument 4, module 5, PC CIM systems 6.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
A kind of P-GAMMA Self-regulation track methods based on middle large scale module proposed by the present invention, in terms of regulation flow process,
Flicker is first adjusted, then adjusts gamma, finally adjusts Flicker again, is included the following steps, as shown in Figure 1：
1) conventional configuration, calibration and Basic function testing, configuration Flicker parameters, P-Gamma are carried out to optical tester
Adjustment parameter；
2) it according to module IC service manuals, configures each of module and ties up a little and corresponding register address；
3) Flicker parameters are parsed, with binary chop algorithm by adjusting Vcom registers with adjustment Flicker, until
Search the corresponding VCOM values of minimum Flicker values；
4) P-Gamma adjustment parameters are parsed, a progress Gamma adjustings, Gamma adjustment processes are tied up to each of module successively
In, it under the premise of keeping the symmetry of positive/negative-pressure, adjusts this and ties up a little corresponding forward voltage values V+ and negative voltage value V-, recycle
It executes, until the brightness value of module is in object brightness error range.
The method that Gamma is adjusted is that may be used with adding with the adjusting method subtracted, i.e., to forward voltage values V+ and negative sense electricity
Pressure value V- increases (+3 ,+3) simultaneously with same size or reduces simultaneously (- 10, -10).The method that Gamma is adjusted is also may be used
Using the adjusting method reversely added and subtracted, i.e., to be increased with a same size pair side forward voltage values V+ and negative voltage value V-
One side reduces (+3, -3) or a side reduces a side and increases (- 10 ,+10).
5) after each tying up a whole adjustings, whether readback verifies the Flicker values of module in target Flicker errors
In range, it is to go to step 6), is otherwise done according to reading back result and finely tune the Flicker values up to module, brightness value in target
Within the scope of luminance errors；One is increased with one side of same size to forward voltage values V+ and negative voltage value V- when finely tuning brightness value
Side reduces or a side reduces a side and increases.
6) OTP burnings are executed, by the VCOM registers after adjusting, each forward voltage values V+ and negative voltage value tied up a little
V- is cured in the EEProm of module IC.
Based on the above method, adjusting test result of the invention is as shown in table 1, and specific adjusting data are as shown in table 2.
Table 1 adjusts test result
| Module ID | Flicker Time(S) | Gamma Time(S) | Total Time(S) |
| 1 | 4.6 | 12.1 | 16.7 |
| 2 | 5.1 | 11.3 | 16.4 |
| 3 | 4.7 | 12.8 | 17.5 |
| 4 | 5.2 | 13.6 | 18.8 |
| 5 | 3.9 | 15.1 | 19 |
Table 2 adjusts data
In terms of software feature, the present invention relies on hardware and software platform software to keep maximum flexibility, correction coefficient that can all match
It sets, IC parameters are all configurable；Keep maximum portability, compatible all mainstream PG equipment；Maximum opening is kept, newly
The support user oriented of IC, it is only necessary to upgrade script and configuration file.
In terms of system architecture, the present invention is using the existing PC+PG+ optical instruments probe networking mode of our company.
The device of P-GAMMA Self-regulation track methods proposed by the present invention based on middle large scale module, including PC1, adjustment
PG2, picture check PG3, optical measuring instrument 4 and module 5；
PC1：For sending Flicker parameters, P-Gamma adjustment parameters to adjustment PG2, lighting-up equipment 3 is controlled to module 5
Grayscale pictorial information is transmitted, control optical measuring instrument 4 acquires the brightness value of module 5, is adjusted according to Flicker parameters, P-Gamma
State modulator adjustment PG2 adjusts VCOM registers, forward voltage values V+ and the negative voltage value V- of module 5, is controlled after the completion of adjusting
Lighting-up equipment 3 processed executes OTP burnings.After the completion of adjustment, adjustment result is transmitted to PC CIM systems 6 by PC1.
Adjustment PG2：For configuring Flicker parameters, P-Gamma adjustment parameters, adjust module 5 forward voltage values V+ and
Negative voltage value V-, and execute OTP burnings；
Picture checks PG3：For transmitting grayscale pictorial information to module 5；
Optical measuring instrument 4：Brightness value for acquiring module 5 is sent to PC1；
Module 5：For showing grayscale pictorial information according to VCOM registers, forward voltage values V+ and negative voltage value V-.
Module 5 large-sized LVDS modules or VBYONE modules in being, adjustment PG2 check that PG3 passes through respectively with picture
TPC/TP interfaces are connect with PC1, and PC1 is connect with optical measuring instrument 4 by RS232 interface.
It the above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, without departing from the principle of the present invention, can be devised by several improvement, these improvement also should be regarded as the guarantor of the present invention
Protect range.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (10)
1. a kind of P-GAMMA Self-regulation track methods based on middle large scale module, it is characterised in that：Include the following steps：
1) configuration Flicker parameters, P-Gamma adjustment parameters；
2) configuration each of module is tied up a little and corresponding register address；
3) Flicker parameters are parsed, VCOM registers are adjusted, until searching the corresponding VCOM values of minimum Flicker values；
4) P-Gamma adjustment parameters are parsed, a progress Gamma adjustings are tied up to module each of successively, in Gamma adjustment processes,
Under the premise of the symmetry for keeping positive/negative-pressure, adjust that this ties up a little corresponding forward voltage values V+ and negative voltage value V-, cycle are held
Row, until the brightness value of module is in object brightness error range；
5) whether the Flicker values of readback verification module are to go to step 6), otherwise in target Flicker error ranges
It is done according to reading back result and finely tunes the Flicker values up to module, brightness value in object brightness error range；
6) OTP burnings are executed, by VCOM registers, each forward voltage values V+ and the negative voltage value V- tied up a little after adjusting
It is cured in the EEProm of module IC.
2. the P-GAMMA Self-regulation track methods according to claim 1 based on middle large scale module, it is characterised in that：Institute
State large-sized LVDS modules or VBYONE modules during module is.
3. the P-GAMMA Self-regulation track methods according to claim 1 or 2 based on middle large scale module, feature exist
In：The method that VCOM registers are adjusted in the step 2) is binary chop algorithm.
4. the P-GAMMA Self-regulation track methods according to claim 1 or 2 based on middle large scale module, feature exist
In：The method that Gamma is adjusted in the step 4) is to be increased simultaneously with same size to forward voltage values V+ and negative voltage value V-
Add or reduces simultaneously.
5. the P-GAMMA Self-regulation track methods according to claim 1 or 2 based on middle large scale module, feature exist
In：The method that Gamma is adjusted in the step 4) is to forward voltage values V+ and negative voltage value V- with a same size pair side
Increase side reduction or a side reduces a side and increases.
6. the P-GAMMA Self-regulation track methods according to claim 1 or 2 based on middle large scale module, feature exist
In：In the step 4) Gamma adjust method be to the forward voltage values V+ when adjusting the first round and negative voltage value V- with
Same size while increase either reduce simultaneously increases side reduction or one in the second wheel fine tuning with a same size pair side
Side reduces a side and increases.
7. the P-GAMMA Self-regulation track methods according to claim 2 based on middle large scale module, it is characterised in that：Institute
The brightness value for stating module in step 4) refers to the module brightness value after adjusting and Gamma2.2 curves in object brightness error range
Difference in allowable range of error.
8. a kind of device for realizing the P-GAMMA Self-regulation track methods described in claim 1 based on middle large scale module, special
Sign is：PG (3), optical measuring instrument (4) and module (5) are checked including PC (1), adjustment PG (2), picture；
The PC (1)：For sending Flicker parameters, P-Gamma adjustment parameters, control lighting-up equipment (3) to adjustment PG (2)
Grayscale pictorial information is transmitted to module (5), control optical measuring instrument (4) acquires the brightness value of module (5), joins according to Flicker
Number, P-Gamma adjustment parameters control adjustment PG (2) adjust VCOM registers, forward voltage values V+ and the negative voltage of module (5)
Value V-, control lighting-up equipment (3) executes OTP burnings after the completion of adjusting；
The adjustment PG (2)：For configuring Flicker parameters, P-Gamma adjustment parameters, the forward voltage values of module (5) are adjusted
V+ and negative voltage value V-, and execute OTP burnings；
The picture checks PG (3)：For transmitting grayscale pictorial information to module (5)；
The optical measuring instrument (4)：Brightness value for acquiring module (5) is sent to PC (1)；
The module (5)：For showing grayscale picture letter according to VCOM registers, forward voltage values V+ and negative voltage value V-
Breath.
9. LVDS vision signals automatic testing equipment according to claim 8, it is characterised in that：The PC (1) is by adjustment
As a result PC CIM systems (6) are transmitted to.
10. LVDS vision signals automatic testing equipment according to claim 9, it is characterised in that：During the module (5) is
Large-sized LVDS modules or VBYONE modules, the adjustment PG (2) check that PG (3) passes through TPC/TP interfaces respectively with picture
It is connect with PC (1), the PC (1) is connect with optical measuring instrument (4) by RS232 interface.
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| CN201810410592.2A CN108648707B (en) | 2018-05-02 | 2018-05-02 | P-GAMMA automatic adjustment method and device based on medium and large size module |
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| CN201810410592.2A CN108648707B (en) | 2018-05-02 | 2018-05-02 | P-GAMMA automatic adjustment method and device based on medium and large size module |
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| CN108648707B CN108648707B (en) | 2021-03-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036327A (en) * | 2018-10-24 | 2018-12-18 | 惠科股份有限公司 | Gamma value adjusting method, device and the computer readable storage medium of display panel |
| CN109616070A (en) * | 2019-01-15 | 2019-04-12 | 成都中电熊猫显示科技有限公司 | Brightness adjusting method, liquid crystal display panel and the liquid crystal display of liquid crystal display panel |
| CN109712584A (en) * | 2019-02-14 | 2019-05-03 | 惠州市华星光电技术有限公司 | The adjustment method of liquid crystal display device |
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| CN103594065A (en) * | 2013-11-08 | 2014-02-19 | 深圳市华星光电技术有限公司 | Adjustment method for gamma voltage adjustment device |
| CN105702215A (en) * | 2016-04-26 | 2016-06-22 | 京东方科技集团股份有限公司 | Gamma voltage correction method and device |
| CN106875916A (en) * | 2017-04-27 | 2017-06-20 | 武汉华星光电技术有限公司 | The method for burn-recording and burning/recording liquid crystal display panel device of liquid crystal display panel |
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| CN103594065A (en) * | 2013-11-08 | 2014-02-19 | 深圳市华星光电技术有限公司 | Adjustment method for gamma voltage adjustment device |
| CN105702215A (en) * | 2016-04-26 | 2016-06-22 | 京东方科技集团股份有限公司 | Gamma voltage correction method and device |
| CN106875916A (en) * | 2017-04-27 | 2017-06-20 | 武汉华星光电技术有限公司 | The method for burn-recording and burning/recording liquid crystal display panel device of liquid crystal display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036327A (en) * | 2018-10-24 | 2018-12-18 | 惠科股份有限公司 | Gamma value adjusting method, device and the computer readable storage medium of display panel |
| CN109616070A (en) * | 2019-01-15 | 2019-04-12 | 成都中电熊猫显示科技有限公司 | Brightness adjusting method, liquid crystal display panel and the liquid crystal display of liquid crystal display panel |
| CN109712584A (en) * | 2019-02-14 | 2019-05-03 | 惠州市华星光电技术有限公司 | The adjustment method of liquid crystal display device |
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| Publication number | Publication date |
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| CN108648707B (en) | 2021-03-19 |
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