CN101650481A - Method and system for debugging liquid crystal display - Google Patents
Method and system for debugging liquid crystal display Download PDFInfo
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- CN101650481A CN101650481A CN200810142488A CN200810142488A CN101650481A CN 101650481 A CN101650481 A CN 101650481A CN 200810142488 A CN200810142488 A CN 200810142488A CN 200810142488 A CN200810142488 A CN 200810142488A CN 101650481 A CN101650481 A CN 101650481A
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- 238000012360 testing method Methods 0.000 claims abstract description 33
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Abstract
The invention is suitable for the field of liquid crystal display debugging and provides a method and a system for debugging a liquid crystal display. The method comprises the following steps: sendinga data signal of a test image to the liquid crystal display; acquiring a brightness signal of the liquid crystal display when the liquid crystal display displays the test image; calculating the flicker severity according to the acquired brightness signal; and regulating a register value of a driving chip of the liquid crystal display according to the flicker severity. The embodiment of the invention can test the flicker severity of the liquid crystal display and debug the liquid crystal display, thereby eliminating flickering phenomena to the utmost extent and improving the display effect ofthe liquid crystal display.
Description
Technical field
The invention belongs to LCD debugging field, relate in particular to a kind of LCD adjustment method and system.
Background technology
Along with the development and the growth of requirement of modern consumption digital technology, (Liquid CrystalDisplay LCD) is widely used in consuming in the digital product LCD.Characteristics such as LCD is little with its volume, thin form, in light weight, low-power consumption, low heating, operating voltage is low, radiationless, image restoring is accurate obtain people's favor, and people require also more and more higher to its display effect simultaneously.
So-called Flicker phenomenon, be exactly that LCD is when display frame, human eye perceives has the phenomenon of flicker to picture, this is because the digital LCD of most of at present consumption adopts the type of drive of frame counter-rotating (frameinversion) and row counter-rotating (line inversion), if the register configuration of LCD controller and glass do not match, can cause the periodic brightness of liquid crystal display surface to change, therefore will produce the scintillation of LCD inevitably, this scintillation has a strong impact on the display effect of LCD, also can make the people be easy to generate the sensation of visual fatigue simultaneously.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of LCD adjustment method, is intended to solve LCD and has scintillation, influences the problem of display effect.
The embodiment of the invention is achieved in that a kind of LCD adjustment method, and described method comprises the steps:
Send the test pattern data-signal to described LCD;
Luminance signal when gathering described liquid crystal display displays test pattern;
Calculate the flicker severity according to the luminance signal of being gathered, adjust the register value of described LCD device drive chip according to the flicker severity.
Another purpose of the embodiment of the invention is to provide a kind of LCD debug system, and described system comprises:
Collecting unit is used to gather the luminance signal of described LCD; And
The debugging control unit, be used to send the test pattern data-signal to described LCD, luminance signal when controlling described collecting unit and gathering described liquid crystal display displays test pattern, calculate the flicker severity according to the luminance signal of being gathered, adjust the register value of described LCD device drive chip according to the flicker severity.
Luminance signal when the embodiment of the invention is passed through to gather the liquid crystal display displays test pattern, calculate the flicker severity according to the luminance signal of being gathered, adjust the register value of LCD device drive chip according to the flicker severity, and duplicate measurements and adjustment are to reach optimal display result, therefore can test out the flicker severity of LCD, and it is debugged, can eliminate scintillation to greatest extent, promote the display effect of LCD.
Description of drawings
Fig. 1 is the process flow diagram of the LCD adjustment method that provides of the embodiment of the invention;
Fig. 2 is the structural drawing of the LCD debug system that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Can test out the flicker severity of LCD in the present invention, and it is debugged.
In the process of using LCD; run into the Flicker phenomenon through regular meeting; so-called Flicker phenomenon; be exactly that LCD is when display frame; human eye perceives has the phenomenon of flicker to picture; this is because the digital LCD of most of at present consumption adopts the type of drive of frame counter-rotating (frame inversion) and row counter-rotating (lineinversion); if the register configuration of LCD controller and glass do not match; can cause the periodic brightness of liquid crystal display surface to change; therefore will produce the scintillation of LCD inevitably; this scintillation has a strong impact on the display effect of LCD, also can make the people be easy to generate the sensation of visual fatigue simultaneously.
Fig. 1 shows the realization flow of the LCD adjustment method that the embodiment of the invention provides, and details are as follows:
In step S101, LCD is carried out initialization;
The register value of LCD device drive chip is set, LCD is carried out initialization.
In step S102, send the test pattern data-signal to LCD;
In step S103, the luminance signal when gathering the liquid crystal display displays test pattern;
In step S104, calculate the flicker severity according to the luminance signal of being gathered;
The luminance signal of being gathered is carried out fast fourier transform obtain frequency-region signal, show test results with the spectrogram form, according to the test result that shows with the spectrogram form, by following formula:
Calculate the flicker severity, wherein, Flicker is flicker severity, the dB of unit, wherein f
FFT(n) be n rank FFT coefficients, f
FFT(0) be 0 rank FFT coefficient, i.e. direct current composition, FS (Hz) is the sensitivity of flicker;
In step S105, judge whether needs adjustment LCD according to the flicker severity, if the flicker severity is greater than 30dB, just need to adjust LCD, execution in step S106 is if the flicker severity is less than or equal to 30dB, just do not need to adjust LCD, then finish;
In step S106, the register value according to flicker severity adjustment LCD device drive chip turns back to step S103, again till not needing to adjust LCD.
Fig. 2 shows the structure of the LCD debug system that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.The LCD debug system comprises the collecting unit 100 that the luminance signal of LCD 1 is gathered, and the debugging control unit 200 that is connected with collecting unit 100 by data line and LCD 1 respectively.
Wherein, debugging control unit 200 comprises single-chip microcomputer 201 and debugging control system 202, and debugging control system 202 is for running on the software systems of equipment such as computing machine.
During work, the LCD control module 2021 of debugging control system 202 generates the test pattern data-signal, and sending to single-chip microcomputer 201 by USB driving interface 2025 and USB line, the LCD driver in the single-chip microcomputer 201 drive LCD 1 and show test pattern.
Single-chip microcomputer 201 reads the luminance signal of the collection of collecting unit 100, and luminance signal is sent to the acquired signal processing module 2023 of debugging control system 202 by USB line and USB driving interface 2025.
The luminance signal of 2023 pairs of collections of acquired signal processing module is carried out fast fourier transform and is obtained frequency-region signal, shows test results with the spectrogram form, according to the test result that shows with the spectrogram form, by following formula:
Calculate the flicker severity, wherein, Flicker is flicker severity, the dB of unit, wherein f
FFT(n) be n rank FFT coefficients, f
FFT(0) is 0 rank FFT coefficient, it is the direct current composition, FS (Hz) is the sensitivity of flicker, and according to the flicker severity judge whether the needs adjustment, if the flicker severity is greater than 30dB, just adjust the register value of LCD 1 chip for driving, and duplicate measurements and adjustment, till not needing to adjust LCD 1.The work of application program module 2024 control LCD control modules 2021, acquisition control module 2022 and acquired signal processing module 2023.
The embodiment of the invention can test out the flicker severity of LCD, and it is debugged, and can eliminate scintillation to greatest extent, promotes the display effect of LCD.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be in being stored in computer read/write memory medium, described storage medium is as ROM/RAM, disk, CD etc.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1, a kind of LCD adjustment method is characterized in that, described method comprises the steps:
Send the test pattern data-signal to described LCD;
Luminance signal when gathering described liquid crystal display displays test pattern;
Calculate the flicker severity according to the luminance signal of being gathered, adjust the register value of described LCD device drive chip according to the flicker severity.
2, the method for claim 1 is characterized in that, before the step of described transmission test pattern data-signal to LCD, described method is further comprising the steps of:
Described LCD is carried out initialization.
3, the method for claim 1 is characterized in that, described according to the luminance signal calculating flicker severity of being gathered, the step of adjusting the register value of described LCD device drive chip according to the flicker severity specifically may further comprise the steps:
The luminance signal of being gathered is calculated and analyzed, draw test result;
According to described test result calculations flicker severity;
Judge whether the needs adjustment according to described flicker severity;
If need to adjust, then adjust the register value of described LCD device drive chip according to described flicker severity.
4, method as claimed in claim 3 is characterized in that, described the luminance signal of being gathered is calculated and analyzed, and the step that draws test result is specially:
The luminance signal of being gathered is carried out fast fourier transform obtain frequency-region signal, show test results with the spectrogram form.
5, method as claimed in claim 4 is characterized in that, described step according to test result calculations flicker severity is specially:
According to the test result that shows with the spectrogram form, by following formula:
Calculate the flicker severity, wherein, Flicker is flicker severity, the dB of unit, wherein f
FFT(n) be n rank FFT coefficients, f
FFT(0) be 0 rank FFT coefficient, i.e. direct current composition, FS (Hz) is the sensitivity of flicker.
6, a kind of LCD debug system is characterized in that, described system comprises:
Collecting unit is used to gather the luminance signal of described LCD; And
The debugging control unit, be used to send the test pattern data-signal to described LCD, luminance signal when controlling described collecting unit and gathering described liquid crystal display displays test pattern, calculate the flicker severity according to the luminance signal of being gathered, adjust the register value of described LCD device drive chip according to the flicker severity.
7, system as claimed in claim 6 is characterized in that, described debugging control unit comprises:
The debugging control system is used for output image test signal and acquisition controlling signal, calculates the flicker severity according to the luminance signal that described collecting unit is gathered, and adjusts the register value of described LCD device drive chip according to described flicker severity; And
Single-chip microcomputer, be used for the test pattern data-signal of described debugging control system output is sent to described LCD, receive the acquisition controlling signal of described debugging control system output, control described collecting unit the luminance signal of described LCD is gathered, described luminance signal is sent to described debugging control system.
8, system as claimed in claim 7 is characterized in that, described debugging control system comprises:
The LCD control module is used to generate the test pattern data-signal;
Acquisition control module is used to generate the acquisition controlling signal;
The acquired signal processing module, the luminance signal that is used for gathering according to described collecting unit is calculated the flicker severity, judge whether the needs adjustment according to described flicker severity,, then adjust the register value of described LCD device drive chip according to the flicker severity if need to adjust;
The USB driving interface is used to connect debugging control system and described single-chip microcomputer; And
Application program module is used to control the work of described LCD control module, acquisition control module and acquired signal processing module.
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| CN2008101424886A CN101650481B (en) | 2008-08-14 | 2008-08-14 | Method and system for debugging liquid crystal display |
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| CN2008101424886A CN101650481B (en) | 2008-08-14 | 2008-08-14 | Method and system for debugging liquid crystal display |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106856A (en) * | 2011-11-14 | 2013-05-15 | 沈阳火炬北泰数码科技有限责任公司 | Debugging system of liquid crystal displayer and debugging method of the liquid crystal displayer |
| CN103676231A (en) * | 2013-11-08 | 2014-03-26 | 深圳市华星光电技术有限公司 | Method and device for measuring Flicker value of liquid crystal module |
| CN104700759A (en) * | 2015-03-17 | 2015-06-10 | 武汉精测电子技术股份有限公司 | Device and method for analyzing brightness spectrum of display panel |
| CN104900213A (en) * | 2015-06-05 | 2015-09-09 | 武汉精测电子技术股份有限公司 | Liquid crystal module brightness adjusting device and method |
| CN105070241A (en) * | 2015-09-22 | 2015-11-18 | 青岛海信电器股份有限公司 | Multi-partition dynamic backlight detection method, multi-partition dynamic backlight detection device and liquid crystal display television |
| CN107908029A (en) * | 2017-12-29 | 2018-04-13 | 徐州帝意电子有限公司 | A kind of LCD screen flicker Automatic adjustment method based on Arduino microcontrollers |
| CN109147709A (en) * | 2018-10-10 | 2019-01-04 | 武汉精测电子集团股份有限公司 | A kind of multiple spot adjusts the method and device of liquid crystal display panel Flicker |
| CN113707072A (en) * | 2021-09-03 | 2021-11-26 | 合肥维信诺科技有限公司 | Flicker debugging method and device for display panel |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3343444B2 (en) * | 1994-07-14 | 2002-11-11 | 株式会社アドバンテスト | LCD panel image quality inspection apparatus and LCD image presampling method |
| KR100899021B1 (en) * | 2001-09-14 | 2009-05-27 | 아메리칸 패널 코포레이션 | Visual display testing, optimization and harmonization method and system |
| KR20060079981A (en) * | 2005-01-04 | 2006-07-07 | 삼성전자주식회사 | Liquid crystal display, and method and apparatus of automatically adjusting flicker of the same |
-
2008
- 2008-08-14 CN CN2008101424886A patent/CN101650481B/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106856A (en) * | 2011-11-14 | 2013-05-15 | 沈阳火炬北泰数码科技有限责任公司 | Debugging system of liquid crystal displayer and debugging method of the liquid crystal displayer |
| CN103676231A (en) * | 2013-11-08 | 2014-03-26 | 深圳市华星光电技术有限公司 | Method and device for measuring Flicker value of liquid crystal module |
| WO2015066946A1 (en) * | 2013-11-08 | 2015-05-14 | 深圳市华星光电技术有限公司 | Method and device for measuring flicker value of liquid crystal module |
| CN104700759A (en) * | 2015-03-17 | 2015-06-10 | 武汉精测电子技术股份有限公司 | Device and method for analyzing brightness spectrum of display panel |
| CN104700759B (en) * | 2015-03-17 | 2017-09-22 | 武汉精测电子技术股份有限公司 | Display panel luminance spectrum analytical equipment and analysis method |
| CN104900213B (en) * | 2015-06-05 | 2017-08-11 | 武汉精测电子技术股份有限公司 | Liquid crystal module brightness regulating apparatus and method |
| CN104900213A (en) * | 2015-06-05 | 2015-09-09 | 武汉精测电子技术股份有限公司 | Liquid crystal module brightness adjusting device and method |
| CN105070241A (en) * | 2015-09-22 | 2015-11-18 | 青岛海信电器股份有限公司 | Multi-partition dynamic backlight detection method, multi-partition dynamic backlight detection device and liquid crystal display television |
| CN107908029A (en) * | 2017-12-29 | 2018-04-13 | 徐州帝意电子有限公司 | A kind of LCD screen flicker Automatic adjustment method based on Arduino microcontrollers |
| CN109147709A (en) * | 2018-10-10 | 2019-01-04 | 武汉精测电子集团股份有限公司 | A kind of multiple spot adjusts the method and device of liquid crystal display panel Flicker |
| CN109147709B (en) * | 2018-10-10 | 2021-05-11 | 武汉精测电子集团股份有限公司 | Method and device for multipoint adjusting Flicker of liquid crystal panel |
| CN113707072A (en) * | 2021-09-03 | 2021-11-26 | 合肥维信诺科技有限公司 | Flicker debugging method and device for display panel |
| CN113707072B (en) * | 2021-09-03 | 2023-01-31 | 合肥维信诺科技有限公司 | Flicker debugging method and device for display panel |
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| CN101650481B (en) | 2011-09-28 |
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Address after: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Patentee after: Shenzhen helitai photoelectric Co.,Ltd. Address before: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Patentee before: SHENZHEN BYD ELECTRONIC COMPONENT Co.,Ltd. |
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