WO2013174131A1 - 用于检测残像的液晶模组检测装置、检测评定系统及方法 - Google Patents
用于检测残像的液晶模组检测装置、检测评定系统及方法 Download PDFInfo
- Publication number
- WO2013174131A1 WO2013174131A1 PCT/CN2012/086800 CN2012086800W WO2013174131A1 WO 2013174131 A1 WO2013174131 A1 WO 2013174131A1 CN 2012086800 W CN2012086800 W CN 2012086800W WO 2013174131 A1 WO2013174131 A1 WO 2013174131A1
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- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- liquid crystal
- detecting
- crystal module
- container
- Prior art date
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Classifications
-
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133382—Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
-
- 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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- 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
- G09G2320/0257—Reduction of after-image effects
Definitions
- Liquid crystal module detecting device for detecting afterimage, detection evaluation system and method
- Embodiments of the present invention relate to a liquid crystal module detecting apparatus, a detection evaluation system, and a method for detecting afterimages. Background technique
- TFT-LCD Thin Film Transistor-Liquid Crystal Display
- Major panel manufacturers are working hard to improve product performance, such as reducing power consumption, increasing viewing angles, and reducing response time. Improvements to the afterimage of the display panel are particularly important because the presence or absence of the afterimage directly affects the quality of the display.
- the afterimage is a phenomenon in which the liquid crystal panel partially displays (drives) a specific still image and then partially shifts it to another image.
- the afterimage is a phenomenon that occurs inside a liquid crystal cell. Since the liquid crystal panel changes to display other images after displaying the still picture for a long time, the liquid crystal molecules cannot be completely deflected in time to adapt to the new picture, thereby affecting the display effect.
- the afterimage can be divided into two types: area image sticking and line image sticking depending on the form of occurrence.
- the main cause of residual image is the effect of residual charge, which includes the polarization charge generated inside the liquid crystal cell under the applied electric field and the different distribution of impurity charges inside the liquid crystal cell.
- residual charge includes the polarization charge generated inside the liquid crystal cell under the applied electric field and the different distribution of impurity charges inside the liquid crystal cell.
- These residual charges affect the orientation of the liquid crystal at the top and bottom of the cell, so that afterimages occur throughout the panel area, and more severely, at the interface between images with significant color differences.
- the generation of afterimages is also affected by other factors such as ambient temperature and still picture type, display time, brightness level, and so on.
- the traditional system for assessing afterimages mainly consists of two parts: one part is the signal generation part, and the other part is the outside world. Heating and temperature control equipment. Since heating and temperature control equipment requires an external power supply and a complicated temperature control device, the conventional afterimage detection system is usually bulky, expensive, and inconvenient to move due to the large size of the device. These lead to the traditional system requiring a dedicated evaluation site, which is not convenient for real-time evaluation, and is not conducive to monitoring the afterimage level at any time. Summary of the invention
- the embodiment of the present invention provides a liquid crystal module detecting device, a detecting and evaluating system and a method for detecting afterimages which are small in size and convenient to carry.
- One aspect of the present invention provides a liquid crystal module detecting apparatus for detecting afterimages, comprising: a sealed and heat-insulating transparent container for accommodating a liquid crystal module to be tested; and a temperature control module for tempering the temperature inside the container
- the signal generating module is configured to provide a driving signal for the liquid crystal module to be tested.
- the temperature control module may include: a temperature control unit and a temperature adjusting unit, wherein the temperature control unit is configured to sense a temperature in the container, and open and close according to the sensed temperature
- the temperature adjustment unit is connected to the temperature control unit for adjusting the temperature in the container.
- the temperature control unit may be integrated in the container.
- the temperature adjusting unit may be integrated in the container.
- the signal generating module can be integrated in the container.
- the temperature control unit may include: a temperature sensor and a controller, wherein the temperature sensor is configured to sense a temperature in the container, and send the sensed temperature data to the control The controller opens and closes the temperature adjustment unit according to the temperature data.
- the signal generating module may be a programmable logic controller.
- the controller and the signal generating module may belong to the same block programmable logic controller.
- Another aspect of the present invention also provides a liquid crystal module detection and evaluation system for detecting afterimages, the system comprising the above apparatus.
- Still another aspect of the present invention provides a liquid crystal module detection and evaluation method for detecting afterimages Law, including steps:
- sensing the temperature in the container if the sensed temperature does not reach the detection temperature reference range, waiting; if the sensed temperature exceeds the detection temperature reference range, adjusting the temperature in the container until induction The temperature reached is within the detection temperature reference range, and the detection of the liquid crystal module to be tested is started.
- the device, the system and the method of the embodiment of the invention form a transparent container with good sealing and heat insulation characteristics through the liquid crystal module to be tested, and use the heat generated by the backlight of the module and the panel to form a temperature environment required for testing, and reduce the device.
- the volume is reduced, and the signal generation module and the temperature control module are integrated in the container, which can further reduce the volume of the device and make it convenient to carry, which is beneficial to real-time monitoring of the detection and evaluation of the liquid crystal module.
- FIG. 1 is a schematic diagram showing the structure of a liquid crystal module detecting device for detecting afterimages according to an embodiment of the present invention
- FIG. 2 is a flow chart of a method for detecting and evaluating a liquid crystal module for detecting afterimages according to an embodiment of the present invention. detailed description
- Embodiments of the present invention utilize the heat emitted by the backlight of the liquid crystal module and the panel to create the temperature environment required for detection, thereby reducing the added volume of additional heating and temperature control equipment and reducing cost.
- a liquid crystal module detecting apparatus for detecting an afterimage includes: a sealed and insulated transparent container 1, a temperature control module, and a signal generating module 4.
- the sealed and heat-insulating transparent container 1 is used for accommodating the liquid crystal module 5 to be tested.
- the container is made of a heat-insulating and transparent material, and the size thereof can be customized according to different sizes of the liquid crystal module to be tested, so as to fully utilize the size.
- the heat of the liquid crystal module itself; the temperature control module is used to adjust the temperature in the container 1; the signal generating module 4 is used to provide a driving signal for the liquid crystal module 5 to be tested.
- the temperature control module may further include a temperature control unit 2 and a temperature adjustment unit 3.
- the temperature control unit 2 is for sensing the temperature inside the container 1 and opening and closing the temperature adjustment unit 3 according to the sensed temperature;
- the temperature adjustment unit 3 is connected to the temperature control unit 2 for controlling under the control of the temperature control unit 2
- the temperature inside the vessel 1 is adjusted to avoid the temperature in the vessel 1 exceeding the reference temperature range of the test evaluation due to excessive accumulation of heat.
- the temperature control unit 2, the temperature adjusting unit 3, and the signal generating module 4 may be integrated in the container 1 in whole or in part.
- the temperature control unit 2 may further include a temperature sensor and a controller.
- the temperature sensor is for sensing the temperature inside the container 1, and sends the sensed temperature data to the controller; the controller opens and closes the temperature adjustment unit 3 based on the temperature data.
- the signal generation module 4 can be, for example, a programmable logic controller.
- PLC Protein Logic Controller
- the function of the controller may be implemented by a programmable logic controller (PLC) (not limited thereto), and the controller controls the opening and closing of the temperature adjustment unit 3 according to the temperature data sent by the temperature sensor.
- PLC programmable logic controller
- the function of the controller can also be the same block
- the PLC controls the implementation to further reduce the size of the device.
- the temperature adjustment unit 3 may be a valve or a heat exchange device or the like connected to the temperature control unit 2, as long as the excess heat in the container 1 can be discharged from the container, and the specific implementation form is not limited thereto.
- Another aspect of the present invention provides a liquid crystal module detection and evaluation system for detecting afterimages, the system comprising the above detection device.
- a liquid crystal module detection and evaluation method for detecting afterimages may include the following steps.
- the temperature control module senses the temperature in the container in real time, and waits if the sensed temperature does not reach the detection temperature reference range; if the sensed temperature exceeds the detection temperature reference range, adjusts the temperature in the container, The detection of the liquid crystal module to be tested is started until the sensed temperature is within the detection temperature reference range.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/995,481 US9939671B2 (en) | 2012-05-25 | 2012-12-17 | Liquid crystal module detection apparatus for detecting image-sticking, and detection and evaluation system and method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210168213.6 | 2012-05-25 | ||
CN201210168213.6A CN102682683B (zh) | 2012-05-25 | 2012-05-25 | 用于检测残像的液晶模组检测装置、检测评定系统及方法 |
Publications (1)
Publication Number | Publication Date |
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WO2013174131A1 true WO2013174131A1 (zh) | 2013-11-28 |
Family
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Family Applications (1)
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PCT/CN2012/086800 WO2013174131A1 (zh) | 2012-05-25 | 2012-12-17 | 用于检测残像的液晶模组检测装置、检测评定系统及方法 |
Country Status (3)
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US (1) | US9939671B2 (zh) |
CN (1) | CN102682683B (zh) |
WO (1) | WO2013174131A1 (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102682683B (zh) * | 2012-05-25 | 2015-04-22 | 京东方科技集团股份有限公司 | 用于检测残像的液晶模组检测装置、检测评定系统及方法 |
CN104036706A (zh) * | 2014-05-26 | 2014-09-10 | 京东方科技集团股份有限公司 | 故障检测方法、故障检测装置和故障检测系统 |
CN107561743B (zh) * | 2017-09-29 | 2020-03-31 | 深圳市华星光电半导体显示技术有限公司 | 一种液晶显示面板的残像判断方法 |
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JPH07253765A (ja) * | 1994-03-15 | 1995-10-03 | Hitachi Ltd | 液晶アクティブマトリクス表示装置 |
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CN102682683A (zh) * | 2012-05-25 | 2012-09-19 | 京东方科技集团股份有限公司 | 用于检测残像的液晶模组检测装置、检测评定系统及方法 |
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JPH09113998A (ja) * | 1995-10-18 | 1997-05-02 | Sony Corp | 液晶パネルユニットおよび液晶プロジェクタ |
KR100471789B1 (ko) * | 1997-12-31 | 2005-07-07 | 삼성전자주식회사 | 티에프티액정표시장치의파워온초기리던던시방지장치 |
JP3576407B2 (ja) * | 1998-11-18 | 2004-10-13 | 富士通株式会社 | 投写型表示装置 |
JP3883904B2 (ja) * | 2001-06-15 | 2007-02-21 | シャープ株式会社 | 表示装置及び表示システム |
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2012
- 2012-05-25 CN CN201210168213.6A patent/CN102682683B/zh not_active Expired - Fee Related
- 2012-12-17 WO PCT/CN2012/086800 patent/WO2013174131A1/zh active Application Filing
- 2012-12-17 US US13/995,481 patent/US9939671B2/en active Active
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JPH07253765A (ja) * | 1994-03-15 | 1995-10-03 | Hitachi Ltd | 液晶アクティブマトリクス表示装置 |
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CN101126878A (zh) * | 2006-08-18 | 2008-02-20 | Nec液晶技术株式会社 | 具有改进的图像质量的面内切换模式液晶显示器件 |
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CN102682683A (zh) * | 2012-05-25 | 2012-09-19 | 京东方科技集团股份有限公司 | 用于检测残像的液晶模组检测装置、检测评定系统及方法 |
Also Published As
Publication number | Publication date |
---|---|
CN102682683A (zh) | 2012-09-19 |
US20140085571A1 (en) | 2014-03-27 |
US9939671B2 (en) | 2018-04-10 |
CN102682683B (zh) | 2015-04-22 |
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