CN104217687A - Method and device for automatically correcting flickering of liquid crystal display - Google Patents
Method and device for automatically correcting flickering of liquid crystal display Download PDFInfo
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- CN104217687A CN104217687A CN201310210577.0A CN201310210577A CN104217687A CN 104217687 A CN104217687 A CN 104217687A CN 201310210577 A CN201310210577 A CN 201310210577A CN 104217687 A CN104217687 A CN 104217687A
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- flicker
- sampled value
- reference point
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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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
- G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
-
- 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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
-
- 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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
-
- 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
- G09G2320/0693—Calibration of display systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a method and a device for automatically correcting flickering of a liquid crystal display. The method comprises the following steps of testing and sampling flickering under specific gray scale so as to obtain a flickering sampling value; and automatically adjusting a common voltage Vcom value in a code by specific step length according to a preset flickering reference value and the flickering sampling value. According to a technology of automatically correcting flickering of the liquid crystal display, flickering can be minimized by automatically adjusting the Vcom value, errors caused by manual adjustment are avoided, and the displaying effect of the liquid crystal display is improved.
Description
Technical field
The present invention relates to LCD Technology field, be specifically related to the method and apparatus of a kind of automatic calibration liquid crystal display flicker.
Background technology
At present, the defect that the liquid crystal display that mobile terminal communication product adopts mainly exists has: display frame flicker causes display effect to be affected.Usually the mode manually adjusting integrated circuit (IC) code at present adjusts flicker, but manual adjustment can produce certain error, and then affects the display quality of product.
Summary of the invention
In view of this, fundamental purpose of the present invention is the method and apparatus providing a kind of automatic calibration liquid crystal display to glimmer, and to avoid manually adjusting the error brought, improves the display effect of liquid crystal display.
For achieving the above object, technical scheme of the present invention is achieved in that
A method for automatic calibration liquid crystal display flicker, the method comprises:
Flicker under specific grey-scale tested and samples, obtaining sampled value of glimmering; According to the flicker reference point preset and described flicker sampled value, automatically regulate the common electric voltage Vcom value in code by particular step size.
The method also comprises: flicker sampled value test sample under specific grey-scale obtained carries out data storage.
If the flicker sampled value obtained is multiple data, calculates average and store as flicker sampled value.
When regulating described common electric voltage Vcom value according to described flicker reference point and described flicker sampled value, flicker sampled value and flicker reference point are contrasted; When sampled value is larger than reference point, automatically regulate described common electric voltage Vcom value by particular step size.
When sampled value is less than or equal to reference point, terminate test.
Described contrast and adjustment operation, perform one or many, until sampled value is less than or equal to reference point.
A device for automatic calibration liquid crystal display flicker, this device comprises test cell, data alignment unit; Wherein,
Described test cell, for testing the flicker under specific grey-scale and sampling, obtains sampled value of glimmering;
Described data alignment unit, for the flicker sampled value obtained according to the flicker reference point preset and test cell, regulates the common electric voltage Vcom value in code automatically by particular step size.
Described device also comprises data storage cell, carries out data storage for flicker sampled value test sample under specific grey-scale obtained.
If the flicker sampled value obtained is multiple data, described data storage cell is used for the average of described multiple data to store as flicker sampled value.
Described device also comprises comparing unit, for flicker sampled value and flicker reference point being contrasted;
When sampled value is larger than reference point, described data alignment unit regulates described common electric voltage Vcom value automatically by particular step size.
When sampled value is less than or equal to reference point, described data alignment unit terminates test.
Described device also comprises setting unit, for default flicker reference point.
Described device also comprises terminal control chip, for controlling the specific works state of each unit in described device.
The technology of automatic calibration liquid crystal display flicker of the present invention, can making flicker minimum by automatically regulating Vcom value, avoiding the error manually adjusting and bring, improving the display effect of liquid crystal display.
Accompanying drawing explanation
Fig. 1 is the general flow chart of the automatic calibration liquid crystal display flicker of the embodiment of the present invention;
Fig. 2 is the process flow diagram of the automatic calibration liquid crystal display flicker of the embodiment of the present invention;
Fig. 3 is the installation drawing of the automatic calibration liquid crystal display flicker of the embodiment of the present invention.
Embodiment
In actual applications, the flow process that can perform as shown in Figure 1 is glimmered with automatic calibration liquid crystal display, and shown in Fig. 1, flow process comprises the following steps:
Step 110: test the flicker under specific grey-scale and sample, obtains sampled value of glimmering;
Step 120: according to the flicker reference point preset and described flicker sampled value, automatically regulate the common electric voltage Vcom value in code by particular step size.
Specifically, flow process shown in Fig. 1 can be refined as flow process as shown in Figure 2, and this flow process comprises the following steps:
Step 201, the flicker reference point arranged under specific grey-scale;
Wherein, glimmer and to test under the specific grey-scale of liquid crystal display, such as GTG 30, the flicker maximal value be defined under GTG 30 is 10, so just flicker reference point during GTG 30 can be set to 10.
Step 202, test sample is carried out to the flicker under specific grey-scale;
Carry out the actual measurement of glimmering according to the picture under specific grey-scale in step 201, the position of test point and quantity can sets itself as required.
Step 203, flicker sampled value test sample under specific grey-scale obtained carry out data storage;
Flicker sampled value test sample in step 202 obtained carries out data storage, if the flicker sampled value obtained is multiple data, can calculates average and store as flicker sampled value.
Step 204, by flicker sampled value with flicker reference point contrast;
The flicker reference point that the flicker sampled value obtained after step 203 being tested and step 201 are arranged contrasts, if sampled value is less than or equal to reference point, picture quality no problem is described, directly terminates test; If sampled value is larger than reference point, illustrate that blink states is poor, need to continue to correct flicker, enter step 205.
Step 205, the common electric voltage Vcom value automatically regulated by particular step size in IC code.
Wherein, Vcom value can be regulated by certain step-length, such as 0.2.
Afterwards, step 202 can be returned, to continue to correct flicker.
Based on foregoing description, step 202 may repeat repeatedly to step 205, until sampled value is less than or equal to reference point.
Visible, the flicker sampled value be consistent with the flicker reference point arranged can be obtained by aforesaid operations, therefore, it is possible to by automatically regulating Vcom value to make flicker minimum, avoiding the error manually adjusting and bring, improving the display effect of liquid crystal display.
Corresponding to the method for the automatic calibration liquid crystal display flicker described in Fig. 1, Fig. 2, provide the equipment that a kind of automatic calibration liquid crystal display is glimmered.As shown in Figure 3, this equipment comprises setting unit, test cell, data storage cell, comparing unit and data alignment unit.Wherein, setting unit is for arranging the reference point of the flicker under specific grey-scale; Test cell is used for testing the flicker under specific grey-scale and sampling, and obtains sampled value of glimmering; The flicker sampled value that data storage cell is used for test sample under specific grey-scale to obtain carries out data storage; Comparing unit is used for flicker sampled value and flicker reference point to contrast; Data alignment unit: for the comparing result according to comparing unit, regulates the common electric voltage Vcom value in IC code automatically by particular step size.
Each unit is all connected with terminal control chip by data line above, controls concrete duty by terminal control chip 6.
Specifically, terminal control chip can be connected by each unit of data line and other:
Terminal control chip can be connected with liquid crystal display through setting unit by liquid crystal display bus, to control output display effect;
Terminal control chip can pass through USB (universal serial bus) (USB) and be connected with test cell, to control test cell;
Terminal control chip can be connected with data storage cell by random access memory (RAM) bus, with the storage of control data storage unit to sampled data;
Terminal control chip can be connected with comparing unit by data bus, carries out Data Comparison to control comparing unit to sampled value and reference point;
Terminal control chip can be connected with data alignment unit by flash memory (Flash) bus, stores the Vcom value after adjustment with control data adjustment unit.
In actual applications, when carrying out flicker test and adjustment to liquid crystal display, control terminal control chip can be carried out with keyboard.By liquid crystal display bus, terminal control chip is connected with liquid crystal display through setting unit, sets flicker reference point, and export picture in liquid crystal display.By USB, test cell is connected to terminal control chip, then glint data sampling pattern is entered into by input through keyboard control terminal control chip, control setting unit is arranged flicker reference point by terminal control chip, controls test cell and tests the flicker under specific grey-scale and sample; The flicker sampled value of test sample under specific grey-scale is carried out data storage by control data storage unit; Control comparing unit flicker sampled value and flicker reference point are contrasted, and comparing result is fed back to terminal control chip.If sampled value is less than or equal to reference point, picture quality no problem is described, terminal control chip directly terminates test; If sampled value is larger than reference point, illustrate that blink states is poor, terminal control chip confirms to need to continue to correct flicker, and automatically to regulate the common electric voltage Vcom value in IC code by particular step size by data alignment unit.
After the described common electric voltage Vcom value of adjustment, terminal control chip can proceed test and the adjustment of flicker, that is: control test cell and test the flicker under specific grey-scale and sample; The flicker sampled value of test sample under specific grey-scale is carried out data storage by control data storage unit; Control comparing unit flicker sampled value and flicker reference point are contrasted, and comparing result is fed back to terminal control chip.If sampled value is less than or equal to reference point, picture quality no problem is described, terminal control chip terminates test; If sampled value is larger than reference point, illustrate that blink states is poor, terminal control chip confirms to need to continue to correct flicker, and automatically to regulate the common electric voltage Vcom value in IC code by particular step size by data alignment unit.
After the above-mentioned flicker test carrying out one or many and adjustment, sampled value is less than or equal to reference point, and picture quality no problem is described, terminal control chip terminates test.
Visible in sum, no matter be method or device, the technology of automatic calibration liquid crystal display flicker of the present invention, the flicker sampled value that the flicker reference point that can obtain and arrange is consistent, therefore, it is possible to by automatically regulating Vcom value to make flicker minimum, avoid the error manually adjusting and bring, improve the display effect of liquid crystal display.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.
Claims (13)
1. a method for automatic calibration liquid crystal display flicker, it is characterized in that, the method comprises:
Flicker under specific grey-scale tested and samples, obtaining sampled value of glimmering; According to the flicker reference point preset and described flicker sampled value, automatically regulate the common electric voltage Vcom value in code by particular step size.
2. method according to claim 1, is characterized in that, the method also comprises: flicker sampled value test sample under specific grey-scale obtained carries out data storage.
3. method according to claim 2, is characterized in that, if the flicker sampled value obtained is multiple data, calculates average and stores as flicker sampled value.
4. the method according to any one of claims 1 to 3, is characterized in that, when regulating described common electric voltage Vcom value according to described flicker reference point and described flicker sampled value, flicker sampled value and flicker reference point is contrasted; When sampled value is larger than reference point, automatically regulate described common electric voltage Vcom value by particular step size.
5. method according to claim 4, is characterized in that, when sampled value is less than or equal to reference point, terminates test.
6. method according to claim 4, is characterized in that, described contrast and adjustment operation, performs one or many, until sampled value is less than or equal to reference point.
7. a device for automatic calibration liquid crystal display flicker, it is characterized in that, this device comprises test cell, data alignment unit; Wherein,
Described test cell, for testing the flicker under specific grey-scale and sampling, obtains sampled value of glimmering;
Described data alignment unit, for the flicker sampled value obtained according to the flicker reference point preset and test cell, regulates the common electric voltage Vcom value in code automatically by particular step size.
8. device according to claim 7, is characterized in that, described device also comprises data storage cell, carries out data storage for flicker sampled value test sample under specific grey-scale obtained.
9. device according to claim 8, is characterized in that, if the flicker sampled value obtained is multiple data, described data storage cell is used for the average of described multiple data to store as flicker sampled value.
10. the device according to any one of claim 7 to 9, is characterized in that, described device also comprises comparing unit, for flicker sampled value and flicker reference point being contrasted;
When sampled value is larger than reference point, described data alignment unit regulates described common electric voltage Vcom value automatically by particular step size.
11. devices according to claim 10, is characterized in that, when sampled value is less than or equal to reference point, described data alignment unit terminates test.
12. devices according to claim 7, is characterized in that, described device also comprises setting unit, for default flicker reference point.
13. devices according to claim 7,8,9 or 12, it is characterized in that, described device also comprises terminal control chip, for controlling the specific works state of each unit in described device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310210577.0A CN104217687A (en) | 2013-05-30 | 2013-05-30 | Method and device for automatically correcting flickering of liquid crystal display |
| PCT/CN2013/080740 WO2014190612A1 (en) | 2013-05-30 | 2013-08-02 | Method and device for automatically correcting flicker of liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310210577.0A CN104217687A (en) | 2013-05-30 | 2013-05-30 | Method and device for automatically correcting flickering of liquid crystal display |
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| CN104217687A true CN104217687A (en) | 2014-12-17 |
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| CN201310210577.0A Pending CN104217687A (en) | 2013-05-30 | 2013-05-30 | Method and device for automatically correcting flickering of liquid crystal display |
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| WO (1) | WO2014190612A1 (en) |
Cited By (11)
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|---|---|---|---|---|
| CN104732943A (en) * | 2015-04-08 | 2015-06-24 | 京东方科技集团股份有限公司 | Public voltage regulating method and device and display device |
| CN104809992A (en) * | 2015-04-03 | 2015-07-29 | 深圳市金立通信设备有限公司 | Device for determining reference voltage of display screen |
| CN104900202A (en) * | 2015-05-21 | 2015-09-09 | 青岛海信移动通信技术股份有限公司 | Liquid crystal screen display driving method and device |
| CN105185340A (en) * | 2015-10-09 | 2015-12-23 | 昆山龙腾光电有限公司 | Common voltage adjustment device and method |
| CN105355185A (en) * | 2015-12-14 | 2016-02-24 | 厦门天马微电子有限公司 | Driving circuit of display panel, display device and driving method thereof |
| CN105761693A (en) * | 2016-05-06 | 2016-07-13 | 深圳市华星光电技术有限公司 | Method for improving afterimage residue and liquid crystal display device using method |
| WO2017012237A1 (en) * | 2015-07-22 | 2017-01-26 | 深圳市华星光电技术有限公司 | Common voltage adjusting apparatus for liquid crystal panel and common voltage adjusting method for liquid crystal panel |
| CN106406957A (en) * | 2016-09-26 | 2017-02-15 | 四川长虹电器股份有限公司 | A method for solving the problem of LED television set flickering caused by Dither setting |
| CN106448520A (en) * | 2016-08-16 | 2017-02-22 | 深圳天珑无线科技有限公司 | Regulating method and device of Vcom value of liquid crystal display screen and liquid crystal display screen |
| TWI665654B (en) * | 2018-04-11 | 2019-07-11 | 立錡科技股份有限公司 | Liquid crystal display and gamma voltage correction method |
| CN110890074A (en) * | 2019-10-30 | 2020-03-17 | 华显光电技术（惠州）有限公司 | Display screen public voltage adjusting method and display screen |
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| CN104809992A (en) * | 2015-04-03 | 2015-07-29 | 深圳市金立通信设备有限公司 | Device for determining reference voltage of display screen |
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| WO2017012237A1 (en) * | 2015-07-22 | 2017-01-26 | 深圳市华星光电技术有限公司 | Common voltage adjusting apparatus for liquid crystal panel and common voltage adjusting method for liquid crystal panel |
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| CN105185340A (en) * | 2015-10-09 | 2015-12-23 | 昆山龙腾光电有限公司 | Common voltage adjustment device and method |
| CN105355185B (en) * | 2015-12-14 | 2018-08-03 | 厦门天马微电子有限公司 | Driving circuit, display device and its driving method of display panel |
| CN105355185A (en) * | 2015-12-14 | 2016-02-24 | 厦门天马微电子有限公司 | Driving circuit of display panel, display device and driving method thereof |
| CN105761693A (en) * | 2016-05-06 | 2016-07-13 | 深圳市华星光电技术有限公司 | Method for improving afterimage residue and liquid crystal display device using method |
| CN106448520A (en) * | 2016-08-16 | 2017-02-22 | 深圳天珑无线科技有限公司 | Regulating method and device of Vcom value of liquid crystal display screen and liquid crystal display screen |
| CN106406957A (en) * | 2016-09-26 | 2017-02-15 | 四川长虹电器股份有限公司 | A method for solving the problem of LED television set flickering caused by Dither setting |
| CN106406957B (en) * | 2016-09-26 | 2019-09-10 | 四川长虹电器股份有限公司 | A method of it solving Dither setting and LED television is caused to flash |
| TWI665654B (en) * | 2018-04-11 | 2019-07-11 | 立錡科技股份有限公司 | Liquid crystal display and gamma voltage correction method |
| CN110890074A (en) * | 2019-10-30 | 2020-03-17 | 华显光电技术（惠州）有限公司 | Display screen public voltage adjusting method and display screen |
| CN110890074B (en) * | 2019-10-30 | 2022-10-28 | 华显光电技术（惠州）有限公司 | Display screen public voltage adjusting method and display screen |
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| Publication number | Publication date |
|---|---|
| WO2014190612A1 (en) | 2014-12-04 |
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Application publication date: 20141217 |
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| RJ01 | Rejection of invention patent application after publication |