WO2018090443A1 - 液晶显示装置的驱动方法及液晶显示装置 - Google Patents

液晶显示装置的驱动方法及液晶显示装置 Download PDF

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WO2018090443A1
WO2018090443A1 PCT/CN2016/112442 CN2016112442W WO2018090443A1 WO 2018090443 A1 WO2018090443 A1 WO 2018090443A1 CN 2016112442 W CN2016112442 W CN 2016112442W WO 2018090443 A1 WO2018090443 A1 WO 2018090443A1
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data
liquid crystal
crystal display
display device
gamma
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PCT/CN2016/112442
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English (en)
French (fr)
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邢振周
国春朋
郭星灵
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武汉华星光电技术有限公司
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Priority to US15/505,104 priority Critical patent/US10210831B2/en
Publication of WO2018090443A1 publication Critical patent/WO2018090443A1/zh

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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
    • 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
    • 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
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • 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
    • G09G2320/0285—Improving the quality of display appearance using tables for spatial correction of display data
    • 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
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • 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

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a driving method of a liquid crystal display device and a liquid crystal display device.
  • LCDs liquid crystal displays
  • Various consumer electronic products such as digital assistants, digital cameras, notebook computers, and desktop computers have become mainstream in display devices.
  • a Thin Film Transistor (TFT) liquid crystal display device is currently the most commonly used display device, and the thin film transistor type liquid crystal display device controls input of a display data signal through a thin film transistor, thereby controlling screen display.
  • TFT Thin Film Transistor
  • each liquid crystal pixel on the liquid crystal display device is driven by a thin film transistor integrated therein, and the high-speed, high-brightness, high-contrast display screen information can be achieved by driving the thin film transistor.
  • the electrical properties of thin film transistors drift over time due to the presence of many defects at the interface between amorphous silicon and silicon nitride (SiNx). Long-term biasing leads to accumulation at the interface between amorphous silicon and silicon nitride.
  • Vth threshold voltage
  • VT curve panel's voltage-transmittance curve
  • gamma adjustment and flick adjustment are required before the TFT-LCD leaves the factory, and the gamma value of the gamma curve of the TFT-LCD is adjusted to the target gamma (generally 2.2) and will be public.
  • the voltage (Vcom) value is adjusted to the best Vcom with the lowest flicker value, resulting in a set of gamma data and Vcom data.
  • an initial voltage is first output, and then the pixel brightness is tested to determine whether the relationship between the two satisfies a power exponent relationship of 2.2. If not, the initial voltage is adjusted, and then the pixel brightness is tested.
  • a gamma data is obtained in which the gamma value of the gamma curve of the TFT-LCD is equal to 2.2.
  • the electrical characteristics of the thin film transistor may drift over time, so that the gamma curve deviates from the gamma 2.2, and the Vcom value deviates from the optimal Vcom, eventually resulting in The display effect is deteriorated, that is, the liquid crystal display device The longer the display is used, the worse the display effect is. Therefore, it is necessary to provide a method for enabling the liquid crystal display device to maintain a high quality display for a long time.
  • An object of the present invention is to provide a driving method for a liquid crystal display device, which can ensure that the gamma value of the gamma curve of the liquid crystal display device is always the target gamma value, and the Vcom value is always the optimum Vcom, and the liquid crystal display device is guaranteed.
  • the display effect does not decrease over time.
  • Another object of the present invention is to provide a liquid crystal display device capable of ensuring that the gamma value of the gamma curve of the liquid crystal display device is always the target gamma value for a long time, and the Vcom value is always the optimum Vcom, thereby ensuring the display effect of the liquid crystal display device. Does not fall over time.
  • the present invention provides a driving method of a liquid crystal display device, comprising the following steps:
  • Step 1 provides a liquid crystal display device, and the liquid crystal display device includes: a display panel; and a driving chip electrically connected to the display panel;
  • Step 2 Providing the plurality of sets of OTP data corresponding to the different used durations by the liquid crystal display device, where each set of OTP data includes: one gamma data and one Vcom data;
  • Step 3 The plurality of sets of OTP data corresponding to the plurality of different used durations of the liquid crystal display device are burned into the driving chip of the liquid crystal display device;
  • Step 4 The driving chip selects a set of OTP data corresponding to the used duration according to the current used duration of the liquid crystal display device, and uses the gamma data and the Vcom data in the set of OTP data to drive the display panel to perform screen display.
  • the step 2 includes: providing a plurality of the liquid crystal display devices having different used durations, and sequentially measuring gamma data of each liquid crystal display device having a different used duration at a preset target gamma value.
  • the Vcom data having the smallest flicker value of each liquid crystal display device is obtained, and the plurality of sets of OTP data corresponding to the plurality of different used durations of the liquid crystal display device are obtained.
  • the step 2 includes: first providing a plurality of test groups, each test group comprising a plurality of the liquid crystal display devices, the liquid crystal display devices in the same test group have the same duration, and the liquid crystal display devices in the different test groups The used time length is different, and then the OTP data corresponding to each test group is sequentially measured, thereby obtaining a plurality of sets of OTP data corresponding to the plurality of different used durations of the liquid crystal display device;
  • the preset target gamma value is 2.2.
  • the second set of OTP data is provided in the step 2, which are the first, second, third, and fourth sets of OTP data respectively;
  • the driving chip in step 4 selects gamma data and Vcom data in the first group of OTP data to display the screen in the first year of use of the liquid crystal display device; the first year of use of the driving chip in the liquid crystal display device Selecting the gamma data and the Vcom data in the second group of OTP data to drive the display panel to display the screen in the second year; the driving chip selects the gamma in the third group of OTP data in the second to third year of use of the liquid crystal display device
  • the horse data and the Vcom data drive display panel perform screen display; the driver chip selects gamma data and Vcom data in the fourth group of OTP data to drive the display panel for screen display after the third year of use of the liquid crystal display device.
  • the present invention also provides a liquid crystal display device comprising: a display panel; and a driving chip electrically connected to the display panel;
  • the driver chip selects a set of OTP data corresponding to the used duration according to the current used duration of the liquid crystal display device, and drives the display panel to display the screen using the gamma data and the Vcom data in the set of OTP data.
  • the liquid crystal display device acquires a plurality of sets of OTP data of different used durations by providing a plurality of the liquid crystal display devices having different used durations, and sequentially measuring each of the different used durations.
  • the gamma data of the liquid crystal display device at a preset target gamma value and the Vcom data that minimizes the flicker value of each liquid crystal display device obtain a plurality of sets of OTP data corresponding to the plurality of different used durations of the liquid crystal display device.
  • the manner in which the liquid crystal display device corresponds to a plurality of different sets of OTP data of different used durations is as follows: first, a plurality of test groups are provided, each test group includes a plurality of the liquid crystal display devices, and liquid crystals in the same test group The display device has the same duration, and the used time of the liquid crystal display device in different test groups is different, and then the OTP data corresponding to each test group is sequentially measured, thereby obtaining a plurality of different used durations of the liquid crystal display device. Multiple sets of OTP data;
  • the test process of the OTP data corresponding to each test group is: respectively detecting gamma data of each liquid crystal display device in the test group at a preset target gamma value and causing the liquid crystal display device to have a flicker value
  • the gamma data and the Vcom data of each liquid crystal display device in the test group are averaged to obtain the gamma data and the Vcom data corresponding to the test group, that is, the used duration corresponding to the test group corresponds to the smallest Vcom data.
  • the preset target gamma value is 2.2.
  • the drive chip is programmed with four sets of OTP data, which are first, second, third, and fourth sets of OTP data;
  • the driving chip selects gamma data and Vcom data in the first group of OTP data to display the screen in the first year of use of the liquid crystal display device; the driving chip is used in the first year to the second of the liquid crystal display device Selecting the gamma data and the Vcom data in the second group of OTP data to drive the display panel for screen display; the driver chip selects the gamma data in the third group of OTP data in the second to third year used by the liquid crystal display device
  • the Vcom data drives the display panel to perform screen display; the driver chip selects gamma data and Vcom data in the fourth group of OTP data to drive the display panel for screen display after the third year of use of the liquid crystal display device.
  • the invention also provides a driving method of a liquid crystal display device, comprising the following steps:
  • Step 1 provides a liquid crystal display device, and the liquid crystal display device includes: a display panel; and a driving chip electrically connected to the display panel;
  • Step 2 Providing the plurality of sets of OTP data corresponding to the different used durations by the liquid crystal display device, where each set of OTP data includes: one gamma data and one Vcom data;
  • Step 3 The plurality of sets of OTP data corresponding to the plurality of different used durations of the liquid crystal display device are burned into the driving chip of the liquid crystal display device;
  • Step 4 The driving chip selects a set of OTP data corresponding to the used duration according to the current used duration of the liquid crystal display device, and uses the gamma data and the Vcom data in the set of OTP data to drive the display panel to perform screen display;
  • the step 2 includes: providing a plurality of the liquid crystal display devices having different used durations, and sequentially measuring the gamma of each liquid crystal display device having a different used duration at a preset target gamma value. Data and Vcom data that minimizes the flicker value of each liquid crystal display device, and obtains a plurality of sets of OTP data corresponding to the plurality of different used durations of the liquid crystal display device;
  • step 2 four sets of OTP data are provided, which are first, second, third, and fourth sets of OTP data;
  • the driving chip in step 4 selects gamma data and Vcom data in the first group of OTP data to display the screen in the first year of use of the liquid crystal display device; the first year of use of the driving chip in the liquid crystal display device Selecting the gamma data and the Vcom data in the second group of OTP data to drive the display panel to display the screen in the second year; the driving chip selects the gamma in the third group of OTP data in the second to third year of use of the liquid crystal display device
  • the horse data and the Vcom data drive display panel perform screen display; the driver chip selects gamma data and Vcom data in the fourth group of OTP data to drive the display panel for screen display after the third year of use of the liquid crystal display device.
  • the present invention provides a driving method of a liquid crystal display device by burning a plurality of different OTP data corresponding to a plurality of used durations in a driving chip, each group of OTP data including a gamma data And a Vcom data, the liquid crystal display device selects the OTP data corresponding to the used duration according to the current used duration, and uses the gamma data and the Vcom data in the OTP data to drive the display panel display screen, thereby avoiding the gamma of the liquid crystal display device.
  • the invention also provides a liquid crystal display device capable of ensuring that the gamma value of the gamma curve of the liquid crystal display device is always the target gamma value for a long time, and the Vcom value is always the optimal Vcom, ensuring that the display effect of the liquid crystal display device does not follow the time. The decline goes on.
  • FIG. 1 is a schematic structural view of a liquid crystal display device of the present invention
  • FIG. 2 is a flow chart showing a method of driving a liquid crystal display device of the present invention.
  • the present invention first provides a driving method of a liquid crystal display device, comprising the following steps:
  • Step 1 provides a liquid crystal display device including a display panel 1 and a driving chip 2 electrically connected to the display panel 1.
  • Step 2 Providing the plurality of sets of One Time Programmable (OTP) data corresponding to the plurality of different used durations, each set of OTP data includes: one gamma data and one Vcom data.
  • OTP Time Programmable
  • the step 2 includes: providing a plurality of the liquid crystal display devices having different used durations, and sequentially measuring the liquid crystal display devices having different used durations at a preset target gamma value.
  • the gamma data and the Vcom data that minimizes the flicker value of each liquid crystal display device obtain a plurality of sets of OTP data corresponding to the plurality of different used durations of the liquid crystal display device.
  • Vcom data For example, provide unused, one-year, two-year, and Using a three-year liquid crystal display device, sequentially measuring gamma data and flicker of an unused, one-year, two-year, and three-year liquid crystal display device with a gamma value equal to 2.2
  • the lowest value Vcom data respectively, the gamma data and Vcom data that should be used in the first year of the liquid crystal display device, the gamma data and the Vcom data to be used in the first year to the second year, in the second year Gamma data and Vcom data to be used in the third year, and gamma data and Vcom data to be used after the third year.
  • the step 2 includes: first providing a plurality of test groups, each test group includes a plurality of the liquid crystal display devices, and the liquid crystal display devices in the same test group have the same duration, and are in different test groups.
  • the used time of the liquid crystal display device is different, and then the OTP data corresponding to each test group is sequentially measured, thereby obtaining a plurality of sets of OTP data corresponding to the plurality of different used durations of the liquid crystal display device; wherein each test group corresponds to
  • the test process of the OTP data is: respectively measuring gamma data of each liquid crystal display device in the test group at a preset target gamma value and Vcom data that minimizes the flicker value of the liquid crystal display device,
  • the gamma data and the Vcom data of each liquid crystal display device in the test group are respectively averaged to obtain gamma data corresponding to the test group and Vcom data, that is, OTP data corresponding to the used duration corresponding to the test group.
  • each of the ten liquid crystal display devices that have not been used have been used for one year, have been used for two years, and have been used for three years are provided as unused, used for one year, and used for two years.
  • the three-year test group has been used to first measure the gamma data of the ten liquid crystal display devices in the unused test group when the gamma value is equal to 2.2 and the Vcom data with the smallest flicker value, and the unused test group
  • the gamma data and the Vcom data of the ten liquid crystal display devices are averaged respectively to obtain the gamma data of the unused test group and the Vcom data, and then the same method is used to measure that it has been used for one year, has been used for two years, and has been Using the gamma data of the three-year test group and the Vcom data, the gamma data and Vcom data that should be used in the first year of the liquid crystal display device, the gamma data to be used in the first year to the second year,
  • Step 3 The plurality of sets of OTP data corresponding to the plurality of different used durations of the liquid crystal display device are burned into the driving chip 2 of the liquid crystal display device.
  • the driving chip 2 adopts the same driving chip that supports only one programming in the same manner as the prior art.
  • the difference is that there are multiple groups of OTP data burned in the present invention, and each group of OTP data includes one gamma data.
  • a Vcom data so that different gamma data and Vcom data can be selected according to the change of the used duration of the liquid crystal display device to drive the display panel to ensure that the liquid crystal display device is always at the target gamma value and the best Vcom at any time.
  • Work but existing Only one set of OTP data is burned during technical programming.
  • the liquid crystal display device can only select gamma data and Vcom data in the OTP data during operation. As the usage time increases, the TFT characteristics in the liquid crystal display device change.
  • the threshold voltage will drift.
  • the original gamma data and Vcom data will be used to make the gamma value of the gamma curve of the liquid crystal display device deviate from the target gamma value (2.2), and the Vcom data deviates from the minimum value of the flicker value.
  • Good Vcom resulting in a worse and worse display.
  • Step 4 The driving chip 2 selects a set of OTP data corresponding to the used duration according to the current used duration of the liquid crystal display device, and drives the display panel 1 to perform screen display by using the gamma data and the Vcom data in the set of OTP data.
  • gamma data and flicker at a gamma value equal to 2.2 according to the unused, one-year, two-year, and three-year liquid crystal display devices measured in step 2.
  • the Vcom data having the smallest value, the driving chip 2 selects the gamma data of the unused liquid crystal display device measured in step 2 in the first year of use of the liquid crystal display device, and the gamma data with the minimum gamma value and the minimum flicker value.
  • the Vcom data drives the display panel 1 to perform screen display; the driving chip 2 uses the one-year liquid crystal display device measured in the first year to the second year selection step 2 used in the liquid crystal display device when the gamma value is equal to 2.2.
  • the gamma data and the Vcom data having the smallest flicker value drive the display panel 1 to perform screen display; the drive chip 2 is used for the two-year liquid crystal display measured in the second to third year selection step 2 used by the liquid crystal display device.
  • the device displays the gamma data with the gamma value equal to 2.2 and the Vcom data with the smallest flicker value to drive the display panel 1 to perform screen display; the driving chip 2 is used after the third year of use of the liquid crystal display device
  • Optional Step 2 has been measured using the three liquid crystal display device is equal to the value of the gamma data and a flicker at the time of the gamma value of 2.2 is a minimum Vcom driving data displayed on the screen of the display panel 1.
  • the present invention further provides a liquid crystal display device comprising: a display panel 1, and a driving chip 2 electrically connected to the display panel 1;
  • the driving chip 2 is programmed with a plurality of sets of OTP data corresponding to the plurality of different used durations, and each set of OTP data includes: one gamma data and one Vcom data;
  • the drive chip 2 selects a set of OTP data corresponding to the used duration according to the current used duration of the liquid crystal display device, and drives the display panel 1 to perform screen display using the gamma data and the Vcom data in the set of OTP data.
  • the liquid crystal display device acquires a plurality of sets of OTP data corresponding to different used durations by providing a plurality of the liquid crystal display devices having different used durations, and sequentially measuring different ones.
  • the gamma data of the liquid crystal display device of the used duration at a preset target gamma value and the Vcom data for minimizing the flicker value of each liquid crystal display device are obtained as a plurality of groups corresponding to the plurality of different used durations of the liquid crystal display device.
  • OTP data For example, provide unused, one-year, two-year, and three-year years of use.
  • the liquid crystal display device sequentially measures the gamma data of the unused liquid crystal display device that has been used for one year, has been used for two years, and has been used for three years, and the Vgame value with the smallest flicker value Data, respectively, gamma data and Vcom data to be used in the first year of the liquid crystal display device, gamma data and Vcom data to be used in the first year to the second year, in the second to third years Gamma data and Vcom data should be used, as well as gamma data and Vcom data that should be used after the third year.
  • the method for obtaining the plurality of sets of OTP data corresponding to the plurality of different used durations of the liquid crystal display device may be: first, providing a plurality of test groups, each test group including a plurality of the liquid crystal display devices, The liquid crystal display device in one test group has the same duration of use, and the used liquid crystal display devices in different test groups have different used durations, and then the OTP data corresponding to each test group is sequentially measured, thereby obtaining correspondingly the liquid crystal display device.
  • the test process of the corresponding OTP data of each test group is: respectively, each liquid crystal display device in the test group is measured under a preset target gamma value
  • the gamma data and the Vcom data which minimizes the flicker value of the liquid crystal display device respectively average the gamma data and the Vcom data of each liquid crystal display device in the test group to obtain gamma data corresponding to the test group and Vcom Data, that is, the OTP data corresponding to the used duration corresponding to the test group.
  • each of the ten liquid crystal display devices that have not been used have been used for one year, have been used for two years, and have been used for three years are provided as unused, used for one year, and used for two years.
  • the three-year test group has been used to first measure the gamma data of the ten liquid crystal display devices in the unused test group when the gamma value is equal to 2.2 and the Vcom data with the smallest flicker value, and the unused test group
  • the gamma data and the Vcom data of the ten liquid crystal display devices are averaged respectively to obtain the gamma data of the unused test group and the Vcom data, and then the same method is used to measure that it has been used for one year, has been used for two years, and has been Using the gamma data of the three-year test group and the Vcom data, the gamma data and Vcom data that should be used in the first year of the liquid crystal display device, the gamma data to be used in the first year to the second year,
  • the driving chip 2 adopts the same driving chip that supports only one programming in the same manner as the prior art.
  • the difference is that there are multiple groups of OTP data to be burned in the present invention, and each group of OTP data includes one gamma. Horse data and a Vcom data, so that different gamma data and Vcom data can be selected according to the change of the duration of use of the liquid crystal display device to drive the display panel to ensure that the liquid crystal display device always has the target gamma value and the best at any time.
  • Working under Vcom while the prior art only burns a set of OTP data, the liquid crystal display device can only choose when working.
  • the gamma data and the Vcom data in the OTP data as the usage time increases, the TFT characteristics in the liquid crystal display device change, the threshold voltage shifts, and the original gamma data and Vcom data are still used.
  • the gamma value of the gamma curve of the liquid crystal display device is deviated from the target gamma value (2.2), and the Vcom data deviates from the optimum Vcom with the smallest flicker value, resulting in an increasingly poor display effect.
  • the present invention provides a driving method of a liquid crystal display device, which is configured to burn a plurality of different OTP data corresponding to a plurality of used durations in a driving chip, each group of OTP data including a gamma data and A Vcom data, the liquid crystal display device selects the OTP data corresponding to the used duration according to the current used duration, and uses the gamma data and the Vcom data in the OTP data to drive the display panel display screen, thereby avoiding the gamma value of the liquid crystal display device Deviation from the target gamma value, Vcom deviates from the optimal Vcom, ensuring that the liquid crystal display device always drives with the target gamma value and the best Vcom, which always ensures the panel display effect and quality.
  • the invention also provides a liquid crystal display device capable of ensuring that the gamma value of the gamma curve of the liquid crystal display device is always the target gamma value for a long time, and the Vcom value is always the optimal Vcom, ensuring that the display effect of the liquid crystal display device does not follow the time. The decline goes on.

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Abstract

一种液晶显示装置的驱动方法及液晶显示装置，其通过在驱动芯片（2）中烧录对应多个不同的已使用时长的多组OTP数据，每一组OTP数据均包括一伽马数据和一Vcom数据，液晶显示装置根据其当前已使用时长选择对应该已使用时长的OTP数据，利用该OTP数据中的伽马数据和Vcom数据驱动显示面板（1）显示画面，能够避免液晶显示装置的伽马值偏离目标伽马值，Vcom偏离最佳Vcom，保证液晶显示装置始终采用目标伽马值和最佳Vcom进行驱动，始终保证了面板显示效果及品质。

Description

液晶显示装置的驱动方法及液晶显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种液晶显示装置的驱动方法及液晶显示装置。
背景技术
随着显示技术的发展，液晶显示器(Liquid Crystal Display，LCD)等平面显示装置因具有高画质、省电、机身薄及应用范围广等优点，而被广泛的应用于手机、电视、个人数字助理、数字相机、笔记本电脑、台式计算机等各种消费性电子产品，成为显示装置中的主流。
薄膜晶体管型(Thin Film Transistor，TFT)液晶显示装置是目前最常用的显示装置，所述薄膜晶体管型液晶显示装置通过薄膜晶体管来控制显示数据信号的输入，进而控制画面显示。具体来说，就是液晶显示装置上的每一液晶像素点都是由集成在其后的薄膜晶体管来驱动的，通过薄膜晶体管驱动可以做到高速度、高亮度、高对比度显示屏幕信息。薄膜晶体管的电学特性会随着时间发生漂移，其原因为非晶硅与氮化硅(SiNx)的界面上存在较多缺陷，长时间加偏压会导致非晶硅与氮化硅界面上积累电荷，这部分电荷形成的电场会与栅极电压叠加，导致薄膜晶体管的阈值电压(Vth)漂移，进而导致薄膜晶体管的电学特性发生漂移，最终导致面板的电压-透过率曲线(V-T curve)发生漂移，影响显示品质。
目前，在TFT-LCD出厂之前都需要进行伽马(Gamma)调整以及闪烁(Flick)调整，将TFT-LCD的伽马曲线的伽马值调整为目标伽马值(一般为2.2)以及将公共电压(Vcom)值调整为闪烁值最低的最佳Vcom，得到一组伽马数据和Vcom数据。具体为，对于某一个灰度，先输出一个初始电压，然后测试像素亮度，判定二者之间的关系是否满足2.2的幂指数关系，如果不满足，则调整初始电压，然后接着测试像素亮度，再判定二者之间的关系是否满足2.2的幂指数关系，直至找到使得二者之间的关系满足2.2的幂指数关系最终电压，重复上述过程，找到预设的若干灰度的最终电压，得出使得TFT-LCD的伽马曲线的伽马值等于2.2的伽马数据。
但是调整后的该液晶显示装置在经过一段时间的使用后，其薄膜晶体管电学特性会随着时间的推移而发生漂移，从而使得伽马曲线偏离伽马2.2，Vcom值偏离最佳Vcom，最终导致显示效果变差，也就是说液晶显示装置 使用的越久显示效果越差，故而需要提供一种方法使得液晶显示装置能够长时间保持高品质显示。
发明内容
本发明的目的在于提供一种液晶显示装置的驱动方法，能够长时间保证液晶显示装置的伽马曲线的伽马值始终为目标伽马值，Vcom值始终为最佳Vcom，保证液晶显示装置的显示效果不随着时间的推移而下降。
本发明的目的还在于提供一种液晶显示装置，能够长时间保证液晶显示装置的伽马曲线的伽马值始终为目标伽马值，Vcom值始终为最佳Vcom，保证液晶显示装置的显示效果不随着时间的推移而下降。
为实现上述目的，本发明提供了一种液晶显示装置的驱动方法，包括如下步骤：
步骤1、提供一液晶显示装置，所述液晶显示装置包括：显示面板、及与所述显示面板电性连接的驱动芯片；
步骤2、提供所述液晶显示装置对应多个不同的已使用时长的多组OTP数据，每一组OTP数据均包括：一伽马数据和一Vcom数据；
步骤3、将所述液晶显示装置对应多个不同的已使用时长的多组OTP数据均烧录到该液晶显示装置的驱动芯片中；
步骤4、所述驱动芯片根据液晶显示装置当前的已使用时长选择对应该已使用时长的一组OTP数据，利用该组OTP数据中的伽马数据以及Vcom数据驱动显示面板进行画面显示。
所述步骤2包括：提供多个具有不同的已使用时长的所述液晶显示装置，依次测得各个具有不同的已使用时长的液晶显示装置在预设的目标伽马值下的伽马数据和使得各个液晶显示装置闪烁值最小的Vcom数据，得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据。
所述步骤2包括：首先提供多个测试组，每一个测试组包括多个所述液晶显示装置，同一个测试组中的液晶显示装置的已使用时长相同，不同测试组中的液晶显示装置的已使用时长不同，然后依次测得每一个测试组对应的OTP数据，进而得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据；
其中，每一个测试组对应的OTP数据的测试过程均为：分别测得该测试组中的每一个液晶显示装置在预设的目标伽马值下的伽马数据以及使得该液晶显示装置闪烁值最小的Vcom数据，将该测试组中的各个液晶显示装置的伽马数据以及Vcom数据分别取平均值，得到该测试组对应的伽马 数据以及Vcom数据，即该测试组对应的已使用时长对应的OTP数据。
所述预设的目标伽马值为2.2。
所述步骤2中提供四组OTP数据，分别为第一、第二、第三、以及第四组OTP数据；
步骤4中所述驱动芯片在液晶显示装置使用的第一年内选择第一组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第一年至第二年选择第二组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第二至第三年选择第三组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第三年以后选择第四组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示。
本发明还提供一种液晶显示装置，包括：显示面板、及与所述显示面板电性连接的驱动芯片；
所述驱动芯片内烧录有所述液晶显示装置对应多个不同的已使用时长的多组OTP数据，每一组OTP数据均包括：一伽马数据与一Vcom数据；
显示时，所述驱动芯片根据液晶显示装置当前的已使用时长选择对应该已使用时长的一组OTP数据，利用该组OTP数据中的伽马数据以及Vcom数据驱动显示面板进行画面显示。
所述液晶显示装置对应多个不同的已使用时长的多组OTP数据的获取方式为：提供多个具有不同的已使用时长的所述液晶显示装置，依次测得各个具有不同的已使用时长的液晶显示装置在预设的目标伽马值下的伽马数据和使得各个液晶显示装置闪烁值最小的Vcom数据，得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据。
所述液晶显示装置对应多个不同的已使用时长的多组OTP数据的获取方式为：首先提供多个测试组，每一个测试组包括多个所述液晶显示装置，同一个测试组中的液晶显示装置的已使用时长相同，不同测试组中的液晶显示装置的已使用时长不同，然后依次测得每一个测试组对应的OTP数据，进而得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据；
其中，每一个测试组对应的OTP数据的测试过程均为：分别测得该测试组中的每一个液晶显示装置在预设的目标伽马值下的伽马数据以及使得该液晶显示装置闪烁值最小的Vcom数据，将该测试组中的各个液晶显示装置的伽马数据以及Vcom数据分别取平均值，得到该测试组对应的伽马数据以及Vcom数据，即该测试组对应的已使用时长对应的OTP数据。
所述预设的目标伽马值为2.2。
所述驱动芯片中烧录有四组OTP数据，分别为第一、第二、第三、以及第四组OTP数据；
所述驱动芯片在液晶显示装置使用的第一年内选择第一组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第一年至第二年选择第二组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第二至第三年选择第三组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第三年以后选择第四组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示。
本发明还提供一种液晶显示装置的驱动方法，包括如下步骤：
步骤1、提供一液晶显示装置，所述液晶显示装置包括：显示面板、及与所述显示面板电性连接的驱动芯片；
步骤2、提供所述液晶显示装置对应多个不同的已使用时长的多组OTP数据，每一组OTP数据均包括：一伽马数据和一Vcom数据；
步骤3、将所述液晶显示装置对应多个不同的已使用时长的多组OTP数据均烧录到该液晶显示装置的驱动芯片中；
步骤4、所述驱动芯片根据液晶显示装置当前的已使用时长选择对应该已使用时长的一组OTP数据，利用该组OTP数据中的伽马数据以及Vcom数据驱动显示面板进行画面显示；
其中，所述步骤2包括：提供多个具有不同的已使用时长的所述液晶显示装置，依次测得各个具有不同的已使用时长的液晶显示装置在预设的目标伽马值下的伽马数据和使得各个液晶显示装置闪烁值最小的Vcom数据，得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据；
其中，所述步骤2中提供四组OTP数据，分别为第一、第二、第三、以及第四组OTP数据；
步骤4中所述驱动芯片在液晶显示装置使用的第一年内选择第一组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第一年至第二年选择第二组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第二至第三年选择第三组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第三年以后选择第四组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示。
本发明的有益效果：本发明提供一种液晶显示装置的驱动方法，其通过在驱动芯片中烧录对应多个不同的已使用时长多组OTP数据，每一组OTP数据均包括一伽马数据和一Vcom数据，液晶显示装置根据其当前已使用时长选择对应该已使用时长的OTP数据，利用该OTP数据中的伽马数据和Vcom数据驱动显示面板显示画面，能够避免液晶显示装置的伽马值偏离目标伽马值，Vcom偏离最佳Vcom，保证液晶显示装置始终采用目标伽马值和最佳Vcom进行驱动，始终保证了面板显示效果及品质。本发明还提供一种液晶显示装置，能够长时间保证液晶显示装置的伽马曲线的伽马值始终为目标伽马值，Vcom值始终为最佳Vcom，保证液晶显示装置的显示效果不随着时间的推移而下降。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为本发明的液晶显示装置的结构示意图；
图2为本发明的液晶显示装置的驱动方法的流程图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图2，本发明首先提供一种液晶显示装置的驱动方法，包括如下步骤：
步骤1、提供一液晶显示装置，所述液晶显示装置包括：显示面板1、及与所述显示面板1电性连接的驱动芯片2。
步骤2、提供所述液晶显示装置对应多个不同的已使用时长的多组一次性可编程(One Time Programabl，OTP)数据，每一组OTP数据均包括：一伽马数据和一Vcom数据。
可选地，所述步骤2包括：提供多个具有不同的已使用时长的所述液晶显示装置，依次测得各个具有不同的已使用时长的液晶显示装置在预设的目标伽马值下的伽马数据和使得各个液晶显示装置闪烁值最小的Vcom数据，得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据。举例来说，分别提供未使用过的、已使用一年的、已使用两年的、以及已 使用三年的液晶显示装置，依次测得未使用过的、已使用一年的、已使用两年的、以及已使用三年的液晶显示装置在伽马值等于2.2时的伽马数据以及闪烁值最小的Vcom数据，分别得出所述液晶显示装置在第一年内应使用的伽马数据和Vcom数据、在第一年至第二年应使用的伽马数据和Vcom数据、在第二年至第三年应使用的伽马数据和Vcom数据、以及在第三年以后应使用的伽马数据和Vcom数据。
可选地，所述步骤2包括：首先提供多个测试组，每一个测试组包括多个所述液晶显示装置，同一个测试组中的液晶显示装置的已使用时长相同，不同测试组中的液晶显示装置的已使用时长不同，然后依次测得每一个测试组对应的OTP数据，进而得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据；其中，每一个测试组对应的OTP数据的测试过程均为：分别测得该测试组中的每一个液晶显示装置在预设的目标伽马值下的伽马数据以及使得该液晶显示装置闪烁值最小的Vcom数据，将该测试组中的各个液晶显示装置的伽马数据以及Vcom数据分别取平均值，得到该测试组对应的伽马数据以及Vcom数据，即该测试组对应的已使用时长对应的OTP数据。举例说明，分别提供未使用过的、已使用一年的、已使用两年的、以及已使用三年的液晶显示装置各十部，分别作为未使用过、已使用一年、已使用两年、以及已使用三年测试组，首先测得未使用测试组中的十部液晶显示装置在伽马值等于2.2时的伽马数据以及闪烁值最小的Vcom数据，并将该未使用测试组中的十部液晶显示装置的伽马数据以及Vcom数据分别取平均值，得到未使用测试组的伽马数据以及Vcom数据，然后再用同样方法测得已使用一年、已使用两年、以及已使用三年测试组的伽马数据以及Vcom数据，最终得出所述液晶显示装置在第一年内应使用的伽马数据和Vcom数据、在第一年至第二年应使用的伽马数据和Vcom数据、在第二年至第三年应使用的伽马数据和Vcom数据、以及在第三年以后应使用的伽马数据和Vcom数据。通过多个液晶显示装置取平均值的测试方式能够减少测试误差，提升测得的伽马数据和Vcom数据的准确性。
步骤3、将所述液晶显示装置对应多个不同的已使用时长的多组OTP数据均烧录到该液晶显示装置的驱动芯片2中。
具体地，该驱动芯片2采用与现有技术相同仅支持一次烧录的驱动芯片，不同的是，在本发明中烧录的OTP数据有多组，每一组OTP数据均包括一伽马数据和一Vcom数据，从而可以根据液晶显示装置已使用时长的变化选择不同的伽马数据和Vcom数据来驱动显示面板工作，保证液晶显示装置在任何时间都始终在目标伽马值和最佳Vcom下进行工作，而现有 技术烧录时仅烧录一组OTP数据，液晶显示装置在工作时只能选择该OTP数据中的伽马数据和Vcom数据，随着使用时长增加，液晶显示装置中的TFT特性会发生改变，阈值电压会产生漂移，此时仍采用原有的伽马数据和Vcom数据就会使得液晶显示装置的伽马曲线的伽马值偏离目标伽马值(2.2)，Vcom数据偏离闪烁值最小的最佳Vcom，导致显示效果越来越差。
步骤4、所述驱动芯片2根据液晶显示装置当前的已使用时长选择对应该已使用时长的一组OTP数据，利用该组OTP数据中的伽马数据以及Vcom数据驱动显示面板1进行画面显示。
举例来说，根据步骤2中测得的未使用过的、已使用一年的、已使用两年的、以及已使用三年的液晶显示装置在伽马值等于2.2时的伽马数据以及闪烁值最小的Vcom数据，所述驱动芯片2在液晶显示装置使用的第一年内选择步骤2中测得的未使用过的液晶显示装置在伽马值等于2.2时的伽马数据以及闪烁值最小的Vcom数据驱动显示面板1进行画面显示；所述驱动芯片2在液晶显示装置使用的第一年至第二年选择步骤2中测得的已使用一年的液晶显示装置在伽马值等于2.2时的伽马数据以及闪烁值最小的Vcom数据驱动显示面板1进行画面显示；所述驱动芯片2在液晶显示装置使用的第二至第三年选择步骤2中测得的已使用两年的液晶显示装置在伽马值等于2.2时的伽马数据以及闪烁值最小的Vcom数据驱动显示面板1进行画面显示；所述驱动芯片2在液晶显示装置使用的第三年以后选择步骤2中测得的已使用三年的液晶显示装置在伽马值等于2.2时的伽马数据以及闪烁值最小的Vcom数据驱动显示面板1进行画面显示。
请参阅图1，本发明还提供一种液晶显示装置，包括：显示面板1、及与所述显示面板1电性连接的驱动芯片2；
所述驱动芯片2内烧录有所述液晶显示装置对应多个不同的已使用时长的多组OTP数据，每一组OTP数据均包括：一伽马数据与一Vcom数据；
显示时，所述驱动芯片2根据液晶显示装置当前的已使用时长选择对应该已使用时长的一组OTP数据，利用该组OTP数据中的伽马数据以及Vcom数据驱动显示面板1进行画面显示。
可选地，所述液晶显示装置对应多个不同的已使用时长的多组OTP数据的获取方式为：提供多个具有不同的已使用时长的所述液晶显示装置，依次测得各个具有不同的已使用时长的液晶显示装置在预设的目标伽马值下的伽马数据和使得各个液晶显示装置闪烁值最小的Vcom数据，得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据。举例来说，分别提供未使用过的、已使用一年的、已使用两年的、以及已使用三年的 液晶显示装置，依次测得未使用过的、已使用一年的、已使用两年的、以及已使用三年的液晶显示装置在伽马值等于2.2时的伽马数据以及闪烁值最小的Vcom数据，分别得出所述液晶显示装置在第一年内应使用的伽马数据和Vcom数据、在第一年至第二年应使用的伽马数据和Vcom数据、在第二年至第三年应使用的伽马数据和Vcom数据、以及在第三年以后应使用的伽马数据和Vcom数据。
可选地，所述液晶显示装置对应多个不同的已使用时长的多组OTP数据的获取方式还可以为：首先提供多个测试组，每一个测试组包括多个所述液晶显示装置，同一个测试组中的液晶显示装置的已使用时长相同，不同测试组中的液晶显示装置的已使用时长不同，然后依次测得每一个测试组对应的OTP数据，进而得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据；其中，每一个测试组对应的OTP数据的测试过程均为：分别测得该测试组中的每一个液晶显示装置在预设的目标伽马值下的伽马数据以及使得该液晶显示装置闪烁值最小的Vcom数据，将该测试组中的各个液晶显示装置的伽马数据以及Vcom数据分别取平均值，得到该测试组对应的伽马数据以及Vcom数据，即该测试组对应的已使用时长对应的OTP数据。举例说明，分别提供未使用过的、已使用一年的、已使用两年的、以及已使用三年的液晶显示装置各十部，分别作为未使用过、已使用一年、已使用两年、以及已使用三年测试组，首先测得未使用测试组中的十部液晶显示装置在伽马值等于2.2时的伽马数据以及闪烁值最小的Vcom数据，并将该未使用测试组中的十部液晶显示装置的伽马数据以及Vcom数据分别取平均值，得到未使用测试组的伽马数据以及Vcom数据，然后再用同样方法测得已使用一年、已使用两年、以及已使用三年测试组的伽马数据以及Vcom数据，最终得出所述液晶显示装置在第一年内应使用的伽马数据和Vcom数据、在第一年至第二年应使用的伽马数据和Vcom数据、在第二年至第三年应使用的伽马数据和Vcom数据、以及在第三年以后应使用的伽马数据和Vcom数据。通过多个液晶显示装置取平均值的测试方式能够减少测试误差，提升测得的伽马数据和Vcom数据的准确性。
需要说明的是，该驱动芯片2采用与现有技术相同仅支持一次烧录的驱动芯片，不同的是，在本发明中烧录的OTP数据有多组，每一组OTP数据均包括一伽马数据和一Vcom数据，从而可以根据液晶显示装置已使用时长的变化选择不同的伽马数据和Vcom数据来驱动显示面板工作，保证液晶显示装置在任何时间都始终在目标伽马值和最佳Vcom下进行工作，而现有技术烧录时仅烧录一组OTP数据，液晶显示装置在工作时只能选择 该OTP数据中的伽马数据和Vcom数据，随着使用时长增加，液晶显示装置中的TFT特性会发生改变，阈值电压会产生漂移，此时仍采用原有的伽马数据和Vcom数据就会使得液晶显示装置的伽马曲线的伽马值偏离目标伽马值(2.2)，Vcom数据偏离闪烁值最小的最佳Vcom，导致显示效果越来越差。
综上所述，本发明提供一种液晶显示装置的驱动方法，其通过在驱动芯片中烧录对应多个不同的已使用时长多组OTP数据，每一组OTP数据均包括一伽马数据和一Vcom数据，液晶显示装置根据其当前已使用时长选择对应该已使用时长的OTP数据，利用该OTP数据中的伽马数据和Vcom数据驱动显示面板显示画面，能够避免液晶显示装置的伽马值偏离目标伽马值，Vcom偏离最佳Vcom，保证液晶显示装置始终采用目标伽马值和最佳Vcom进行驱动，始终保证了面板显示效果及品质。本发明还提供一种液晶显示装置，能够长时间保证液晶显示装置的伽马曲线的伽马值始终为目标伽马值，Vcom值始终为最佳Vcom，保证液晶显示装置的显示效果不随着时间的推移而下降。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (12)

  1. 一种液晶显示装置的驱动方法，包括如下步骤：
    步骤1、提供一液晶显示装置，所述液晶显示装置包括：显示面板、及与所述显示面板电性连接的驱动芯片；
    步骤2、提供所述液晶显示装置对应多个不同的已使用时长的多组OTP数据，每一组OTP数据均包括：一伽马数据和一Vcom数据；
    步骤3、将所述液晶显示装置对应多个不同的已使用时长的多组OTP数据均烧录到该液晶显示装置的驱动芯片中；
    步骤4、所述驱动芯片根据液晶显示装置当前的已使用时长选择对应该已使用时长的一组OTP数据，利用该组OTP数据中的伽马数据以及Vcom数据驱动显示面板进行画面显示。
  2. 如权利要求1所述的液晶显示装置的驱动方法，其中，所述步骤2包括：提供多个具有不同的已使用时长的所述液晶显示装置，依次测得各个具有不同的已使用时长的液晶显示装置在预设的目标伽马值下的伽马数据和使得各个液晶显示装置闪烁值最小的Vcom数据，得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据。
  3. 如权利要求1所述的液晶显示装置的驱动方法，其中，所述步骤2包括：首先提供多个测试组，每一个测试组包括多个所述液晶显示装置，同一个测试组中的液晶显示装置的已使用时长相同，不同测试组中的液晶显示装置的已使用时长不同，然后依次测得每一个测试组对应的OTP数据，进而得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据；
    其中，每一个测试组对应的OTP数据的测试过程均为：分别测得该测试组中的每一个液晶显示装置在预设的目标伽马值下的伽马数据以及使得该液晶显示装置闪烁值最小的Vcom数据，将该测试组中的各个液晶显示装置的伽马数据以及Vcom数据分别取平均值，得到该测试组对应的伽马数据以及Vcom数据，即该测试组对应的已使用时长对应的OTP数据。
  4. 如权利要求2所述的液晶显示装置的驱动方法，其中，所述预设的目标伽马值为2.2。
  5. 如权利要求1所述的液晶显示装置的驱动方法，其中，所述步骤2中提供四组OTP数据，分别为第一、第二、第三、以及第四组OTP数据；
    步骤4中所述驱动芯片在液晶显示装置使用的第一年内选择第一组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱 动芯片在液晶显示装置使用的第一年至第二年选择第二组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第二至第三年选择第三组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第三年以后选择第四组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示。
  6. 一种液晶显示装置，包括：显示面板、及与所述显示面板电性连接的驱动芯片；
    所述驱动芯片内烧录有所述液晶显示装置对应多个不同的已使用时长的多组OTP数据，每一组OTP数据均包括：一伽马数据与一Vcom数据；
    显示时，所述驱动芯片根据液晶显示装置当前的已使用时长选择对应该已使用时长的一组OTP数据，利用该组OTP数据中的伽马数据以及Vcom数据驱动显示面板进行画面显示。
  7. 如权利要求6所述的液晶显示装置，其中，所述液晶显示装置对应多个不同的已使用时长的多组OTP数据的获取方式为：提供多个具有不同的已使用时长的所述液晶显示装置，依次测得各个具有不同的已使用时长的液晶显示装置在预设的目标伽马值下的伽马数据和使得各个液晶显示装置闪烁值最小的Vcom数据，得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据。
  8. 如权利要求6所述的液晶显示装置，其中，所述液晶显示装置对应多个不同的已使用时长的多组OTP数据的获取方式为：首先提供多个测试组，每一个测试组包括多个所述液晶显示装置，同一个测试组中的液晶显示装置的已使用时长相同，不同测试组中的液晶显示装置的已使用时长不同，然后依次测得每一个测试组对应的OTP数据，进而得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据；
    其中，每一个测试组对应的OTP数据的测试过程均为：分别测得该测试组中的每一个液晶显示装置在预设的目标伽马值下的伽马数据以及使得该液晶显示装置闪烁值最小的Vcom数据，将该测试组中的各个液晶显示装置的伽马数据以及Vcom数据分别取平均值，得到该测试组对应的伽马数据以及Vcom数据，即该测试组对应的已使用时长对应的OTP数据。
  9. 如权利要求7所述的液晶显示装置，其中，所述预设的目标伽马值为2.2。
  10. 如权利要求6所述的液晶显示装置，其中，所述驱动芯片中烧录有四组OTP数据，分别为第一、第二、第三、以及第四组OTP数据；
    所述驱动芯片在液晶显示装置使用的第一年内选择第一组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第一年至第二年选择第二组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第二至第三年选择第三组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第三年以后选择第四组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示。
  11. 一种液晶显示装置的驱动方法，包括如下步骤：
    步骤1、提供一液晶显示装置，所述液晶显示装置包括：显示面板、及与所述显示面板电性连接的驱动芯片；
    步骤2、提供所述液晶显示装置对应多个不同的已使用时长的多组OTP数据，每一组OTP数据均包括：一伽马数据和一Vcom数据；
    步骤3、将所述液晶显示装置对应多个不同的已使用时长的多组OTP数据均烧录到该液晶显示装置的驱动芯片中；
    步骤4、所述驱动芯片根据液晶显示装置当前的已使用时长选择对应该已使用时长的一组OTP数据，利用该组OTP数据中的伽马数据以及Vcom数据驱动显示面板进行画面显示；
    其中，所述步骤2包括：提供多个具有不同的已使用时长的所述液晶显示装置，依次测得各个具有不同的已使用时长的液晶显示装置在预设的目标伽马值下的伽马数据和使得各个液晶显示装置闪烁值最小的Vcom数据，得到所述液晶显示装置对应多个不同的已使用时长的多组OTP数据；
    其中，所述步骤2中提供四组OTP数据，分别为第一、第二、第三、以及第四组OTP数据；
    步骤4中所述驱动芯片在液晶显示装置使用的第一年内选择第一组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第一年至第二年选择第二组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第二至第三年选择第三组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示；所述驱动芯片在液晶显示装置使用的第三年以后选择第四组OTP数据中的伽马数据和Vcom数据驱动显示面板进行画面显示。
  12. 如权利要求11所述的液晶显示装置的驱动方法，其中，所述预设的目标伽马值为2.2。
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CN109257549B (zh) * 2018-09-14 2021-01-12 武汉帆茂电子科技有限公司 一种在液晶模组实时显示otp状态的装置及方法

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