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WO2013004030A1 - 液晶显示器及其驱动方法和装置 - Google Patents

液晶显示器及其驱动方法和装置 Download PDF

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Publication number
WO2013004030A1
WO2013004030A1 PCT/CN2011/077646 CN2011077646W WO2013004030A1 WO 2013004030 A1 WO2013004030 A1 WO 2013004030A1 CN 2011077646 W CN2011077646 W CN 2011077646W WO 2013004030 A1 WO2013004030 A1 WO 2013004030A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal display
high reference
working time
backlight intensity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2011/077646
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English (en)
French (fr)
Inventor
林柏伸
张勇
郭东胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/258,760 priority Critical patent/US20130010001A1/en
Publication of WO2013004030A1 publication Critical patent/WO2013004030A1/zh
Anticipated expiration legal-status Critical
Priority to US14/504,036 priority patent/US9812069B2/en
Ceased legal-status Critical Current

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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
    • G09G3/3406—Control of illumination source
    • 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
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/048—Preventing or counteracting the effects of ageing using evaluation of the usage time
    • 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

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a liquid crystal display, a driving device for the liquid crystal display, and a driving method for the liquid crystal display.
  • the backlight current of the liquid crystal display has a tendency to decrease with time. If the backlight of the liquid crystal display is used for a long time, the backlight will be aged, and the brightness of the backlight is lowered, which makes the display the brightest condition. The lower brightness is not enough, and the dynamic/static contrast is also reduced, which ultimately causes the screen display effect of the liquid crystal display to be greatly affected.
  • An object of the present invention is to provide a liquid crystal display, a driving method of the liquid crystal display, and a driving device for the liquid crystal display In order to solve the problem that the backlight brightness is lowered due to the aging of the liquid crystal display, thereby affecting the display effect of the liquid crystal display screen.
  • the present invention provides a driving method of a liquid crystal display, the method comprising the following steps:
  • the product of the transmittance of the liquid crystal display and the backlight intensity are equal or close to each other.
  • the method before the step of acquiring the accumulated working time of the liquid crystal display, the method further includes the following steps:
  • the step of matching the high reference voltage corresponding to the accumulated working time according to the obtained accumulated working time includes:
  • a high reference voltage is found in the correspondence between the transmittance and the high reference voltage according to the obtained transmittance.
  • the method before the step of acquiring the accumulated working time of the liquid crystal display, the method further includes the following steps:
  • the step of matching the high reference voltage corresponding to the accumulated working time according to the obtained accumulated working time includes:
  • each gamma curve corresponds to a high reference voltage, and at the high reference voltage, the product of the transmittance of the liquid crystal display and the backlight intensity are equal or close to each other.
  • the method before the step of matching the acquired high-reference voltage corresponding to the accumulated working time according to the acquired accumulated working time, the method further includes the following steps:
  • the product of the transmittance of the liquid crystal display and the backlight intensity at the different high reference voltages is equal to or close to the product of the transmittance and the backlight intensity of the liquid crystal display at the time of shipment.
  • the step of acquiring the accumulated working time of the liquid crystal display specifically includes:
  • the cumulative operating time of the liquid crystal display is obtained by a counter or a timer provided on the liquid crystal display.
  • Another object of the present invention is to provide a driving device for a liquid crystal display to solve the problem that the backlight brightness is lowered due to the aging of the liquid crystal display, thereby affecting the display effect of the liquid crystal display screen.
  • the present invention provides a driving device for a liquid crystal display, the device comprising:
  • a time acquisition unit configured to acquire an accumulated working time of the liquid crystal display
  • a voltage matching unit configured to match a high reference voltage corresponding to the accumulated working time according to the acquired accumulated working time
  • a driving unit configured to drive the liquid crystal display according to the matched high reference voltage
  • the product of the transmittance of the liquid crystal display and the backlight intensity are equal or close to each other.
  • the device further includes a storage unit,
  • the storage unit is configured to pre-store a correspondence between a backlight intensity and an accumulated working time, and a correspondence between a light transmittance and a high reference voltage;
  • the voltage matching unit specifically includes:
  • a backlight intensity acquiring unit configured to match a corresponding backlight intensity in a correspondence between the backlight intensity and the accumulated working time according to the acquired accumulated working time;
  • a light transmittance acquiring unit configured to obtain a light transmittance according to the matched backlight intensity, wherein the light transmittance acquiring unit obtains the light transmittance so that the liquid crystal display is transparent at different high reference voltages
  • the product of the light rate and the backlight intensity are equal or close to each other;
  • a voltage searching unit configured to search for a high reference voltage in a correspondence between the transmittance and the high reference voltage according to the obtained transmittance.
  • the storage unit is further configured to store a gamma curve in advance, wherein the gamma curve corresponds to the accumulated working time;
  • the voltage matching unit further includes a gamma curve matching unit,
  • the gamma curve matching unit is configured to match a gamma curve corresponding to the accumulated working time according to the accumulated working time;
  • a voltage searching unit configured to search for a high reference voltage corresponding to the gamma curve according to the matched gamma curve
  • each gamma curve corresponds to a high reference voltage, and at a high reference voltage, the product of the transmittance of the liquid crystal display and the backlight intensity are equal or close to each other.
  • the storage unit is further configured to record the light transmittance of the liquid crystal display at the factory timing, the backlight intensity, and a product of the two;
  • the voltage matching unit matches the high reference voltage so that the product of the transmittance of the liquid crystal display and the backlight intensity is equal to or close to the product of the transmittance and the backlight intensity of the liquid crystal display at the time of delivery at different high reference voltages. .
  • the acquisition liquid crystal display further includes a counter or a timer, and the time acquisition unit acquires the accumulated operation time of the liquid crystal display by the counter or the timer.
  • the present invention provides a liquid crystal display including a driving device of a liquid crystal display, the device comprising:
  • a time acquisition unit configured to acquire an accumulated working time of the liquid crystal display
  • a voltage matching unit configured to match a high reference voltage corresponding to the accumulated working time according to the acquired accumulated working time
  • a driving unit configured to drive the liquid crystal display according to the matched high reference voltage
  • the product of the transmittance of the liquid crystal display and the backlight intensity are equal or close to each other.
  • the device further includes a storage unit,
  • the storage unit is configured to pre-store a correspondence between a backlight intensity and an accumulated working time, and a correspondence between a light transmittance and a high reference voltage;
  • the voltage matching unit specifically includes:
  • a backlight intensity acquiring unit configured to match a corresponding backlight intensity in a correspondence between the backlight intensity and the accumulated working time according to the acquired accumulated working time;
  • a light transmittance acquiring unit configured to obtain a light transmittance according to the matched backlight intensity, wherein the light transmittance acquiring unit obtains the light transmittance so that the liquid crystal display is transparent at different high reference voltages
  • the product of the light rate and the backlight intensity are equal or close to each other;
  • a voltage searching unit configured to search for a high reference voltage in a correspondence between the transmittance and the high reference voltage according to the obtained transmittance.
  • the storage unit is further configured to store a gamma curve in advance, wherein the gamma curve corresponds to the accumulated working time;
  • the voltage matching unit further includes a gamma curve matching unit,
  • the gamma curve matching unit is configured to match a gamma curve corresponding to the accumulated working time according to the accumulated working time;
  • a voltage searching unit configured to search for a high reference voltage corresponding to the gamma curve according to the matched gamma curve
  • each gamma curve corresponds to a high reference voltage, and at a high reference voltage, the product of the transmittance of the liquid crystal display and the backlight intensity are equal or close to each other.
  • the storage unit is further configured to record the light transmittance of the liquid crystal display at the factory, the backlight intensity, and the product of the two;
  • the voltage matching unit matches the high reference voltage so that the product of the transmittance of the liquid crystal display and the backlight intensity is equal to or close to the product of the transmittance and the backlight intensity of the liquid crystal display at the time of delivery at different high reference voltages. .
  • the acquisition liquid crystal display further includes a counter or a timer, and the time acquisition unit acquires the accumulated operation time of the liquid crystal display by the counter or the timer.
  • the present invention eliminates the problem of the backlight brightness degradation caused by the backlight aging of the liquid crystal display in the prior art, thereby affecting the display effect of the liquid crystal display screen, so that the liquid crystal display always maintains a better display effect. .
  • FIG. 1 is a flow chart of a first preferred embodiment of a driving method of a liquid crystal display according to the present invention
  • FIG. 2 is a view showing a preferred embodiment of a correspondence relationship between backlight intensity and accumulated working time in the present invention
  • FIG. 3 is a view showing a preferred embodiment of a correspondence relationship between light transmittance and a high reference voltage in the present invention
  • FIG. 4 is an internal schematic diagram of a liquid crystal display of the present invention.
  • FIG. 5 is a flow chart of a second preferred embodiment of a driving method of a liquid crystal display according to the present invention.
  • Figure 6 is a second schematic diagram of the internal structure of the liquid crystal display of the present invention.
  • Figure 7 is a structural view showing a first preferred embodiment of a driving device for a liquid crystal display according to the present invention.
  • Figure 8 is a structural view showing a second preferred embodiment of a driving device for a liquid crystal display according to the present invention.
  • FIG. 1 is a flow chart of a first preferred embodiment of a driving method of a liquid crystal display according to the present invention.
  • step S101 the correspondence relationship between the backlight intensity of the liquid crystal display and the accumulated working time, and the correspondence relationship between the light transmittance and the high reference voltage are stored in advance.
  • the high reference voltage is a driving voltage of the liquid crystal display, that is, a high reference voltage of a Gamma curve, and a voltage of a Gamma curve in the liquid crystal display is generated by a partial voltage of the high reference voltage.
  • the correspondence between the backlight intensity and the accumulated working time is a curve. Under the curve, the backlight intensity I corresponds to the accumulated working time T.
  • the correspondence between the transmittance and the high reference voltage is a curve.
  • the transmittance A corresponds to the voltage value V of the high reference voltage.
  • FIG. 2 and FIG. 3 are only preferred embodiments.
  • the backlight intensity and the accumulated working time are in one-to-one correspondence in a table
  • the transmittance and the high reference voltage are in one-to-one correspondence in a table. All of them are within the protection scope of the present invention, and are not enumerated here.
  • step S102 the accumulated operating time of the liquid crystal display is acquired.
  • the accumulated working time of the liquid crystal display referred to in the present invention is the cumulative working time of the backlight in the liquid crystal display.
  • the present invention can accurately correct the problem caused by the backlight aging by performing statistical processing on the accumulated working time of the backlight.
  • the cumulative working time of the liquid crystal display is divided into three stages: the factory time T1 to the time T2, the time T2 to the time T3, and after the time T3, of course, only three stages are listed here, in order to achieve better results, Increasing the accuracy can also be divided into more stages, which are all within the protection scope of the present invention, and will not be enumerated here.
  • the embodiment of the present invention obtains the accumulated working time of the liquid crystal display by using a counter or a timer provided on the liquid crystal display.
  • a counter or a timer provided on the liquid crystal display.
  • other acquisition modes may also be used, which are not enumerated here.
  • step S103 the corresponding backlight intensity is matched in the corresponding relationship between the backlight intensity and the accumulated working time shown in FIG. 2 according to the acquired accumulated working time.
  • step S104 the light transmittance is obtained according to the matched backlight intensity.
  • the principle of obtaining transmittance is that the products of the transmittance and the backlight intensity of the liquid crystal display are equal or close to each other under different high reference voltages.
  • the backlight intensities corresponding to the times T1, T2, and T3 are I1, I2, and I3, respectively.
  • the transmittances corresponding to the high reference voltages V1, V2, and V3 are A1, A2, and A, respectively. 3.
  • the product of the transmittance of the liquid crystal display and the backlight intensity satisfies the following formula:
  • the embodiment of the present invention assumes that the high reference voltage at the time of shipment is V1, corresponding to the time T1. In the specific implementation process, if the above equation cannot be satisfied, I1A1, I2A2 or I3A3 should be made close to each other as much as possible. In the embodiment of the invention, the products of the transmittance and the backlight intensity of the liquid crystal display are equal or close to each other under different high reference voltages.
  • step S105 a high reference voltage is looked up in the correspondence relationship between the light transmittance and the high reference voltage shown in FIG. 3 according to the acquired light transmittance.
  • step S106 the liquid crystal display is driven according to the found high reference voltage.
  • the cumulative operating time of the liquid crystal display is divided into three phases: the factory time T1 to the time T2, the time T2 to the time T3, and the time T3.
  • the backlight intensities corresponding to the times T1, T2, and T3 are I1, I2, and I3, respectively.
  • the transmittance at different high reference voltages applied across the liquid crystal display was measured.
  • the high reference voltages are V1, V2, and V3
  • the transmittances of the liquid crystal display are A1, A2, and A3, respectively.
  • the high reference voltage of the liquid crystal display when shipped from the factory is recorded as V1
  • the light transmittance A1 of the liquid crystal display at the factory time T1 the backlight intensity I1
  • the product I1A1 of the two are recorded.
  • the above formula cannot be satisfied, try to make I1A1, I2A2, and I3A3 close to each other.
  • the invention also provides a liquid crystal display comprising a memory, a timing controller, a pulse width modulation chip, a gamma generating unit and a driving chip,
  • the memory is configured to store a correspondence between a backlight intensity and an accumulated working time, a correspondence between a light transmittance and a high reference voltage, and record a light transmittance of the liquid crystal display at the factory time when the liquid crystal display is shipped from the factory.
  • the timing controller is configured to read data stored by the memory
  • the pulse width modulation chip is configured to read corresponding data by the timing controller according to an accumulated working time of the liquid crystal display, thereby generating a high reference voltage;
  • the gamma generating unit is configured to generate a corresponding gamma reference voltage according to the high reference voltage and input the driving chip;
  • the driving chip is configured to drive the liquid crystal display
  • the product of the backlight intensity corresponding to the accumulated working time and the light transmittance corresponding to the high reference voltage at the accumulated working time is equal to or close to the product of the backlight intensity and the light transmittance and the backlight intensity at the factory.
  • the acquisition liquid crystal display further includes a counter or a timer, and the pulse width modulation chip acquires an accumulated operation time of the liquid crystal display by the counter or a timer.
  • FIG. 4 is a schematic diagram of an internal schematic diagram of a liquid crystal display according to an embodiment of the present invention.
  • T-CON is Timing Controller
  • PWM Pulse Width Modulation chip
  • Gamma IC is a Gamma generating unit
  • the Source Driver is a driving chip.
  • Data such as the correspondence between the backlight intensity and the accumulated working time, and the correspondence between the light transmittance and the high reference voltage are input to the timing controller.
  • the time T1 is recorded, and the light transmittance A1 of the liquid crystal display, the backlight intensity I1, and the product I1A1 of the light transmittance and the backlight intensity at the time T1 are recorded.
  • the pulse width modulation chip generates a high reference voltage V1
  • the Gamma generating unit generates a corresponding Gamma reference voltage and inputs it to the driving chip.
  • the timing controller reads the data in the memory, the pulse width modulation chip generates a high reference voltage V2, and the Gamma generating unit generates a corresponding Gamma reference voltage and inputs the driving chip.
  • the timing controller reads the data in the memory, the pulse width modulation chip generates a high reference voltage V3, and the Gamma generating unit generates a corresponding Gamma reference voltage and inputs the driving chip.
  • the present invention can effectively solve the problem that the backlight brightness is lowered due to backlight aging, and thus the display quality of the liquid crystal display is degraded, and the liquid crystal display can be ensured to maintain a better display effect.
  • FIG. 5 is a flow chart of a second preferred embodiment of the driving method of the liquid crystal display of the present invention.
  • step S501 gamma curves at different high reference voltages are stored in advance.
  • the gamma integrated circuit (Gamma generating unit) can support multiple storage areas bank to store different sets of gamma curves
  • the present invention pre-stores gamma curves under different high reference voltages into the Gamma generating unit or External memory Memory.
  • gamma's high reference voltage can be several groups or dozens to save costs.
  • the gamma curve corresponds to the accumulated working time, that is, different time periods correspond to different gamma curves.
  • step S502 the accumulated operating time of the liquid crystal display is acquired.
  • the embodiment of the present invention obtains the accumulated working time of the liquid crystal display by using a counter or a timer provided on the liquid crystal display, and may of course be obtained by other means, which are not enumerated here.
  • step S503 the gamma curve corresponding to the accumulated working time is matched according to the accumulated working time.
  • the high reference voltage in the gamma curve can meet the following conditions:
  • Time T2' corresponds to gamma curve 2
  • the product of the transmittance A2' corresponding to the high reference voltage V2' on the gamma curve 2 and the backlight intensity I2' at the time T2' is equal to the transmittance A1' corresponding to the high reference voltage V1' on the gamma curve 1 and the backlight intensity I1.
  • I1'A1' I2'A2';
  • the product of the transmittance of the liquid crystal display and the backlight intensity is equal to or close to the product of the transmittance and the backlight intensity of the liquid crystal display at the time of delivery at different high reference voltages.
  • step S504 the high reference voltage corresponding to the gamma curve is searched according to the matched gamma curve.
  • step S505 the liquid crystal display is driven according to the found high reference voltage.
  • FIG. 6 is a schematic diagram of an internal schematic diagram of a liquid crystal display according to an embodiment of the present invention:
  • Data input timing controller such as gamma curve under different high reference voltages, pulse width modulation chip generation
  • the high reference voltage required by the Gamma generating unit, at time T1 corresponds to the gamma curve 1
  • the Gamma generating unit generates a set of Gamma voltages, and inputs the Gamma voltage to the driving chip.
  • the pulse width modulation chip At time T2, corresponding to gamma curve 2, the pulse width modulation chip generates another set of high reference voltages required by the gamma generating unit, and the gamma generating unit generates another set of gamma voltages, and inputs the generated gamma voltage to the driving chip.
  • the optimization compensation can be performed from the angle of driving the liquid crystal display panel.
  • Fig. 7 is a view showing the configuration of a first preferred embodiment of a driving device for a liquid crystal display of the present invention.
  • the storage unit 71 pre-stores the correspondence between the backlight intensity of the liquid crystal display and the accumulated working time, and the correspondence between the light transmittance and the high reference voltage.
  • the storage unit 71 also records the light transmittance A of the liquid crystal display at the factory time T1, the backlight intensity I, and the product of the two.
  • the time acquisition unit 72 acquires the accumulated operating time of the liquid crystal display.
  • the liquid crystal display further includes a counter or a timer, and the time acquiring unit 72 acquires the accumulated working time of the liquid crystal display through the counter or the timer.
  • the voltage matching unit 73 matches the high reference voltage of the liquid crystal display corresponding to the accumulated working time according to the acquired accumulated operating time.
  • the product of the transmittance of the liquid crystal display and the backlight intensity are equal or close to each other.
  • the driving unit 74 drives the liquid crystal display according to the high reference voltage of the liquid crystal display to which the voltage matching unit 73 is matched.
  • the voltage matching unit 73 specifically includes:
  • the backlight intensity acquiring unit 731 is configured to match the corresponding backlight intensity in the correspondence between the backlight intensity and the accumulated working time according to the accumulated working time acquired by the time acquiring unit 72;
  • the light transmittance acquiring unit 732 is configured to obtain a light transmittance according to the backlight intensity matched by the backlight intensity acquiring unit 731, wherein the light transmittance acquiring unit 732 makes the light transmittance at different high reference voltages
  • the product of the transmittance of the liquid crystal display and the backlight intensity are equal or close to each other;
  • the voltage searching unit 733 is configured to search for a high reference voltage in the correspondence between the light transmittance and the high reference voltage according to the light transmittance obtained by the light transmittance acquiring unit 732.
  • FIG. 8 is a view showing the structure of a second preferred embodiment of a driving apparatus for a liquid crystal display according to the present invention.
  • the storage unit 81 stores a gamma curve in advance, wherein the gamma curve corresponds to the accumulated working time.
  • the storage unit 81 is further configured to record the light transmittance A of the liquid crystal display at the factory time T1, the backlight intensity I, and the product of the two.
  • the time acquisition unit 82 acquires the accumulated operating time of the liquid crystal display.
  • the voltage matching unit 83 matches the corresponding high reference voltage.
  • the driving unit 84 drives the liquid crystal display according to the matched high reference voltage.
  • the voltage matching unit 83 matches the high reference voltage such that the product of the transmittance of the liquid crystal display and the backlight intensity is equal to the product of the transmittance and the backlight intensity of the liquid crystal display at the factory timing at different high reference voltages or Close to each other.
  • the voltage matching unit 83 specifically includes: a gamma curve matching unit 831 and a voltage searching unit 832.
  • the gamma curve matching unit 831 is configured to match a gamma curve corresponding to the accumulated working time according to the accumulated working time.
  • the voltage searching unit 832 is configured to search for a high reference voltage corresponding to the gamma curve according to the gamma curve matched by the gamma curve matching unit 831.
  • each gamma curve corresponds to a high reference voltage, and at different high reference voltages, the product of the transmittance of the liquid crystal display and the backlight intensity are equal or close to each other.
  • the present invention also provides a liquid crystal display comprising the driving device of the liquid crystal display provided by the present invention. Since the device has been specifically described above, it will not be described herein.

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Abstract

一种液晶显示器及其驱动方法和装置，所述方法包括以下步骤：获取液晶显示器的累计工作时间（S102）；根据获取的累计工作时间获取匹配的背光强度（S103）；根据匹配到的背光强度获取背光率（S104）；根据获取的背光率查找对应的高参考电压（S105）；根据匹配到的高参考电压驱动所述液晶显示器（S106）；其中，在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或相互接近。所述的装置包括实现上述方法中各功能的对应单元。所述的方法或装置消除了现有技术中由于液晶显示器的背光老化带来的背光亮度下降，进而影响液晶显示器画面显示效果的问题，使液晶显示器始终保持较佳的显示效果。

Description

液晶显示器及其驱动方法和装置 技术领域
本发明涉及液晶显示技术领域，特别涉及一种液晶显示器，一种液晶显示器的驱动装置，以及一种液晶显示器的驱动方法。
 背景技术
随着液晶技术的不断普及，用户对液晶显示器功能的要求也越来越高。
在液晶显示器的使用过程中，液晶显示器背光电流随着时间的推移有下降的趋势，如果液晶显示器背光使用时间较长，将会导致背光发生老化，进而使得背光亮度下降，这使得显示器最亮情况下亮度不够，而且动态/静态对比也随之下降，最终使得液晶显示器的画面显示效果受到很大的影响。
故，如何避免由于液晶显示器的背光老化带来的背光亮度下降，进而影响液晶显示器画面显示效果的问题，是液晶显示技术领域研究的方向之一。
 技术问题
本发明的一个目的在于提供一种液晶显示器、一种液晶显示器的驱动方法以及一种液晶显示器的驱动装置 ，以解决由于液晶显示器的背光老化带来的背光亮度下降，进而影响液晶显示器画面显示效果的问题。
 技术解决方案
为解决上述问题，本发明提供了一种液晶显示器的驱动方法，所述方法包括以下步骤：
获取液晶显示器的累计工作时间；
根据获取的累计工作时间匹配与所述累计工作时间对应的高参考电压；
根据匹配到的高参考电压驱动所述液晶显示器；
其中，在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近。
在本发明的液晶显示器的驱动方法中，在获取液晶显示器的累计工作时间的步骤之前，所述方法还包括以下步骤：
预先存储背光强度与累计工作时间的对应关系，以及透光率与高参考电压的对应关系；
其中，所述根据获取的累计工作时间匹配与所述累计工作时间对应的高参考电压的步骤具体包括：
根据获取的累计工作时间在所述背光强度与累计工作时间的对应关系中匹配相应的背光强度；
根据匹配到的背光强度获取透光率，其中，在获取透光率时，使得在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近；
根据获取的透光率在所述透光率与高参考电压的对应关系中查找高参考电压。
在本发明的液晶显示器的驱动方法中，在获取液晶显示器的累计工作时间的步骤之前，所述方法还包括以下步骤：
预先存储gamma曲线，其中，所述gamma曲线对应所述累计工作时间；
其中，所述根据获取的累计工作时间匹配与所述累计工作时间对应的高参考电压的步骤具体包括：
根据所述累计工作时间匹配与所述累计工作时间对应的gamma曲线；
根据匹配到的gamma曲线查找所述gamma曲线对应的高参考电压；
其中，每一gamma曲线对应一高参考电压，在所述高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近。
在本发明的液晶显示器的驱动方法中，所述根据获取的累计工作时间匹配与所述累计工作时间对应的高参考电压的步骤之前，所述方法还包括以下步骤：
记录出厂时刻液晶显示器的透光率、背光强度以及两者的乘积；
在匹配高参考电压时，使得在不同高参考电压下，液晶显示器的透光率和背光强度的乘积与出厂时刻液晶显示器的透光率和背光强度的乘积相等或者相互接近。
在本发明的液晶显示器的驱动方法中，所述获取液晶显示器的累计工作时间的步骤具体包括：
通过设置在所述液晶显示器上的计数器或者计时器获取所述液晶显示器的累计工作时间。
本发明的另一个目的在于提供一种液晶显示器的驱动装置，以解决由于液晶显示器的背光老化带来的背光亮度下降，进而影响液晶显示器画面显示效果的问题。
为解决上述问题，本发明提供一种液晶显示器的驱动装置，所述装置包括：
时间获取单元，用于获取液晶显示器的累计工作时间；
电压匹配单元，用于根据获取的累计工作时间匹配与所述累计工作时间对应的高参考电压；
驱动单元，用于根据匹配到的高参考电压驱动所述液晶显示器；
其中，在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近。
在本发明的液晶显示器的驱动装置中，所述装置还包括存储单元，
所述存储单元，用于预先存储背光强度与累计工作时间的对应关系，以及透光率与高参考电压的对应关系；
所述电压匹配单元具体包括：
背光强度获取单元，用于根据获取的累计工作时间在所述背光强度与累计工作时间的对应关系中匹配相应的背光强度；
透光率获取单元，用于根据匹配到的背光强度获取透光率，其中，所述透光率获取单元在获取透光率时，使得在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近；
电压查找单元，用于根据获取的透光率在所述透光率与高参考电压的对应关系中查找高参考电压。
在本发明的液晶显示器的驱动装置中，所述存储单元，还用于预先存储gamma曲线，其中，所述gamma曲线对应所述累计工作时间；
其中，所述电压匹配单元还包括gamma曲线匹配单元，
所述gamma曲线匹配单元，用于根据所述累计工作时间匹配与所述累计工作时间对应的gamma曲线；
电压查找单元，用于所述根据匹配到的gamma曲线查找所述gamma曲线对应的高参考电压；
其中，每一gamma曲线对应一高参考电压，在高参考电压下，液晶显示器的透光率和背光强度的乘积相等或者相互接近。
在本发明的液晶显示器的驱动装置中，所述存储单元，还用于记录出厂时刻液晶显示器的透光率、背光强度以及两者的乘积；
所述电压匹配单元，在匹配高参考电压时，使得在不同高参考电压下，液晶显示器的透光率和背光强度的乘积与出厂时刻液晶显示器的透光率和背光强度的乘积相等或者相互接近。
在本发明的液晶显示器的驱动装置中，所述获取液晶显示器还包括计数器或者计时器，所述时间获取单元通过所述计数器或者计时器获取所述液晶显示器的累计工作时间。
本发明的还一目的在于提供一种液晶显示器，以解决由于液晶显示器的背光老化带来的背光亮度下降，进而影响液晶显示器画面显示效果的问题
为解决上述问题，本发明提供了一种液晶显示器，所述液晶显示器包括一液晶显示器的驱动装置，所述装置包括：
时间获取单元，用于获取液晶显示器的累计工作时间；
电压匹配单元，用于根据获取的累计工作时间匹配与所述累计工作时间对应的高参考电压；
驱动单元，用于根据匹配到的高参考电压驱动所述液晶显示器；
其中，在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近。
在本发明的液晶显示器中，所述装置还包括存储单元，
所述存储单元，用于预先存储背光强度与累计工作时间的对应关系，以及透光率与高参考电压的对应关系；
所述电压匹配单元具体包括：
背光强度获取单元，用于根据获取的累计工作时间在所述背光强度与累计工作时间的对应关系中匹配相应的背光强度；
透光率获取单元，用于根据匹配到的背光强度获取透光率，其中，所述透光率获取单元在获取透光率时，使得在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近；
电压查找单元，用于根据获取的透光率在所述透光率与高参考电压的对应关系中查找高参考电压。
在本发明的液晶显示器中，所述存储单元，还用于预先存储gamma曲线，其中，所述gamma曲线对应所述累计工作时间；
其中，所述电压匹配单元还包括gamma曲线匹配单元，
所述gamma曲线匹配单元，用于根据所述累计工作时间匹配与所述累计工作时间对应的gamma曲线；
电压查找单元，用于所述根据匹配到的gamma曲线查找所述gamma曲线对应的高参考电压；
其中，每一gamma曲线对应一高参考电压，在高参考电压下，液晶显示器的透光率和背光强度的乘积相等或者相互接近。
在本发明的液晶显示器中，所述存储单元，还用于记录出厂时刻液晶显示器的透光率、背光强度以及两者的乘积；
所述电压匹配单元，在匹配高参考电压时，使得在不同高参考电压下，液晶显示器的透光率和背光强度的乘积与出厂时刻液晶显示器的透光率和背光强度的乘积相等或者相互接近。
在本发明的液晶显示器中，所述获取液晶显示器还包括计数器或者计时器，所述时间获取单元通过所述计数器或者计时器获取所述液晶显示器的累计工作时间。
 有益效果
本发明相对于现有技术，消除了现有技术中由于液晶显示器的背光老化带来的背光亮度下降，进而影响液晶显示器画面显示效果的问题，使得液晶显示器始终保持较佳的显示效果。。
附图说明
图1为本发明中液晶显示器的驱动方法的第一较佳实施例的流程图；
图2为本发明中背光强度与累计工作时间的对应关系的较佳实施例图；
图3为本发明中透光率与高参考电压的对应关系的较佳实施例图；
图4为本发明中液晶显示器的内部原理图之一；
图5为本发明中液晶显示器的驱动方法的第二较佳实施例的流程图；
图6为本发明中液晶显示器的内部原理图之二；
图7为本发明中液晶显示器的驱动装置第一较佳实施例的结构图；
图8为本发明中液晶显示器的驱动装置第二较佳实施例的结构图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。
请参阅图1，图1为本发明中液晶显示器的驱动方法的第一较佳实施例的流程。
在步骤S101中，预先存储液晶显示器的背光强度与累计工作时间的对应关系，以及透光率与高参考电压的对应关系。
其中，所述高参考电压为液晶显示器的驱动电压，也即Gamma曲线的高参考电压，液晶显示器中Gamma曲线的电压由所述高参考电压的分压产生。
请参阅图2，背光强度与累计工作时间的对应关系为一曲线，在该曲线下，背光强度I与累计工作时间T一一对应。
请参阅图3，透光率与高参考电压的对应关系为一曲线，在该曲线下，透光率A与高参考电压的电压值V一一对应。
当然，图2和图3仅为较佳实施例，还有其它实施例，譬如背光强度与累计工作时间在一表格中一一对应，透光率与高参考电压在一表格中一一对应，均在本发明保护范围之内，此处不一一列举。
在步骤S102中，获取液晶显示器的累计工作时间。
其中，本发明中所指的液晶显示器的累计工作时间为液晶显示器中背光的累计工作时间，本发明通过对背光的累计工作时间进行统计处理，可以准确的针对背光老化带来的问题进行修正。
譬如，将液晶显示器的累计工作时间分为三个阶段：出厂时刻T1至时刻T2，时刻T2至时刻T3，以及时刻T3之后，当然此处仅仅列出三个阶段，为了达到更好的效果，提高精准度，还可以分为更多的阶段，均在本发明保护范围之内，此处不再一一列举。
在具体实施过程中，本发明实施例通过设置在所述液晶显示器上的计数器或者计时器获取所述液晶显示器的累计工作时间，当然也可以有其它的获取方式，此处不一一列举。
在步骤S103中，根据获取的累计工作时间在图2所示的背光强度与累计工作时间的对应关系中匹配相应的背光强度。
在步骤S104中，根据匹配到的背光强度获取透光率。
其中，获取透光率的原则为：在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近。
假设时刻T1、T2和T3对应的背光强度分别为I1、I2和I3。高参考电压V1、V2和V3对应的透光率分别为A1、A2和A 3，所述液晶显示器的透光率和背光强度的乘积满足以下公式：
I1A1=I2A2=I3A3；
其中，本发明实施例假设出厂时的高参考电压为V1，对应时刻T1。在具体实施过程中，若无法满足上述等式，则尽量使得I1A1、I2A2或I3A3之间相互接近。本发明实施例中，在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近。
在步骤S105中，根据获取的透光率在图3所示的透光率与高参考电压的对应关系中查找高参考电压。
在步骤S106中，根据查找到的高参考电压驱动所述液晶显示器。
譬如，根据背光强度与累计工作时间的对应关系（I-T曲线），将液晶显示器的累计工作时间分为三个阶段：出厂时刻T1至时刻T2，时刻T2至时刻T3，以及时刻T3之后。其中，与时刻T1、T2与T3对应的背光强度分别为I1、I2与I3。
其次，测量出在液晶显示器两端施加不同高参考电压下的透光率。譬如，当高参考电压为V1、V2和V3时液晶显示器的透光率分别为A1、A2和A3。
其中，不同的高参考电压V1、V2、V3下，液晶显示器的背光强度和透光率满足下式：
I1A1=I2A2=I3A3；
本发明实施例中，记录液晶显示器出厂时的高参考电压为V1，并记录出厂时刻T1液晶显示器的透光率A1、背光强度I1以及两者的乘积I1A1。当然，若无法满足上式，则尽量使得I1A1、I2A2与I3A3之间相互接近。
本发明还提供一种液晶显示器，所述液晶显示器包括存储器，时序控制器，脉冲宽度调制芯片，Gamma产生单元以及驱动芯片，
其中，所述存储器，用于存储背光强度与累计工作时间的对应关系、透光率与高参考电压的对应关系，以及在所述液晶显示器出厂时，记录下出厂时刻液晶显示器的透光率、背光强度以及透光率和背光强度的乘积；
所述时序控制器，用于读取所述存储器存储的数据；
所述脉冲宽度调制芯片，用于根据所述液晶显示器的累计工作时间，通过所述时序控制器读取相应的数据，进而产生高参考电压；
所述Gamma产生单元，用于根据所述高参考电压产生相应的Gamma参考电压并输入驱动芯片；
所述驱动芯片，用于驱动所述液晶显示器，
其中，所述累计工作时间对应的背光强度和所述累计工作时间时刻高参考电压对应的透光率的乘积，与出厂时刻背光强度和透光率和背光强度的乘积相等或者相互接近。
在本发明的液晶显示器中，所述获取液晶显示器还包括计数器或者计时器，所述脉冲宽度调制芯片通过所述计数器或者计时器获取所述液晶显示器的累计工作时间。
请参阅图4，图4为本发明实施例中液晶显示器的内部原理图之一。
其中，T-CON为时序控制器( Timing Controller)，PWM IC为脉冲宽度调制（Pulse Width Modulation）芯片，Gamma IC为Gamma产生单元，Source Driver为驱动芯片。
将背光强度与累计工作时间的对应关系、透光率与高参考电压的对应关系等数据输入时序控制器。在液晶显示器出厂时，记录下时刻T1，同时记录时刻T1时液晶显示器的透光率A1、背光强度I1以及透光率和背光强度的乘积I1A1。T1时刻，脉冲宽度调制芯片产生高参考电压V1，Gamma产生单元产生相应的Gamma参考电压并输入驱动芯片。
当液晶显示器的累计使用时间抵达时刻T2时，时序控制器读取存储器中的数据，脉冲宽度调制芯片产生高参考电压V2，Gamma产生单元产生相应的Gamma参考电压并输入驱动芯片。
当液晶显示器抵达时刻T3时，时序控制器读取存储器中的数据，脉冲宽度调制芯片产生高参考电压V3，Gamma产生单元产生相应的Gamma参考电压并输入驱动芯片。
通过上述步骤，本发明能够有效地解决由于背光老化造成的背光亮度下降，进而使得液晶显示器的显示质量下降的问题，能够保证液晶显示器保持较佳的显示效果。
请参阅图5，图5为本发明的液晶显示器的驱动方法的第二较佳实施例的流程。
在步骤S501中，预先存储不同高参考电压下的gamma曲线。
其中，由于gamma集成电路（Gamma产生单元）可支持多个存储区bank存储不同组的gamma曲线，在具体实施过程中，本发明预先将不同高参考电压下的gamma曲线储存至Gamma产生单元内置或外置的存储器Memory中。其中，gamma的高参考电压可为几组或十几组，以节省成本。
其中，所述gamma曲线对应所述累计工作时间，即，不同的时间段对应不同的gamma曲线。
在步骤S502中，获取液晶显示器的累计工作时间。
优选的，本发明实施例通过设置在所述液晶显示器上的计数器或者计时器获取所述液晶显示器的累计工作时间，当然也可以通过其它方式获取，此处不一一列举。
在步骤S503中，根据累计工作时间匹配与累计工作时间对应的gamma曲线。
其中，gamma曲线中的高参考电压大小可满足如下条件：
假设出厂时刻T1'对应gamma曲线1，记录出厂时刻液晶显示器的透光率A1'、背光强度I1'以及两者的乘积I1'A1'。
时刻T2'对应gamma曲线2， gamma曲线2上的高参考电压V2'对应的透光率A2'与时刻T2'的背光强度I2'的乘积等于gamma曲线1上的高参考电压V1'对应的透光率A1'与背光强度I1'的乘积：
I1'A1'=I2'A2'；
本发明实施例中，在匹配高参考电压时，使得在不同高参考电压下，液晶显示器的透光率和背光强度的乘积与出厂时刻液晶显示器的透光率和背光强度的乘积相等或者相互接近。
在步骤S504中，根据匹配到的gamma曲线查找所述gamma曲线对应的高参考电压。
在步骤S505中，根据查找到的高参考电压驱动所述液晶显示器。
请参阅图6，图6为本发明实施例中液晶显示器的内部原理图之二:
不同高参考电压下的gamma曲线等数据输入时序控制器，脉冲宽度调制芯片产生 Gamma产生单元所需的高参考电压，在T1时刻，对应gamma曲线1，Gamma产生单元产生一组Gamma电压，并将Gamma电压输入至驱动芯片。
在T2时刻下，对应gamma曲线2，脉冲宽度调制芯片产生Gamma产生单元所需的另一组高参考电压，则Gamma产生单元产生另一组Gamma电压，并将产生的Gamma电压输入至驱动芯片。
通过上述步骤，即使背光亮度下降，从液晶显示器面板驱动的角度也能进行最优化补偿。
图7为本发明中液晶显示器的驱动装置第一较佳实施例的结构。
其中，存储单元71预先存储液晶显示器的背光强度与累计工作时间的对应关系，以及透光率与高参考电压的对应关系。
在具体实施过程中，所述存储单元71还记录出厂时刻T1液晶显示器的透光率A、背光强度I以及两者的乘积。
时间获取单元72获取液晶显示器的累计工作时间。
在具体实施过程中，液晶显示器还包括计数器或者计时器，所述时间获取单元72通过所述计数器或者计时器获取所述液晶显示器的累计工作时间。
电压匹配单元73根据获取的累计工作时间匹配与所述累计工作时间对应的液晶显示器的高参考电压。
其中，在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近。
驱动单元74根据电压匹配单元73匹配到的液晶显示器的高参考电压驱动所述液晶显示器。
在具体实施过程中，所述电压匹配单元73具体包括：
背光强度获取单元731，用于根据时间获取单元72获取的累计工作时间在所述背光强度与累计工作时间的对应关系中匹配相应的背光强度；
透光率获取单元732，用于根据背光强度获取单元731匹配到的背光强度获取透光率，其中，所述透光率获取单元732在获取透光率时，使得在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近；
电压查找单元733，用于根据透光率获取单元732获取的透光率在所述透光率与高参考电压的对应关系中查找高参考电压。
请参阅图8，图8是本发明中液晶显示器的驱动装置第二较佳实施例的结构。
其中，所述存储单元81预先存储gamma曲线，其中，所述gamma曲线对应所述累计工作时间。
所述存储单元81，还用于记录出厂时刻T1液晶显示器的透光率A、背光强度I以及两者的乘积。
时间获取单元82获取液晶显示器的累计工作时间。
电压匹配单元83匹配相应的高参考电压。
驱动单元84根据匹配到的高参考电压驱动所述液晶显示器。
其中，所述电压匹配单元83在匹配高参考电压时，使得在不同高参考电压下，液晶显示器的透光率和背光强度的乘积与出厂时刻液晶显示器的透光率和背光强度的乘积相等或者相互接近。
在具体实施过程中，电压匹配单元83具体包括：gamma曲线匹配单元831和电压查找单元832。
所述gamma曲线匹配单元831，用于根据所述累计工作时间匹配与所述累计工作时间对应的gamma曲线。
电压查找单元832，用于所述根据gamma曲线匹配单元831匹配到的gamma曲线查找所述gamma曲线对应的高参考电压。
其中，每一gamma曲线对应一高参考电压，在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近。
关于本发明提供的液晶显示器的驱动装置的工作原理请参阅上文中关于液晶显示器的驱动方法的描述，此处不再一一赘述。
本发明还提供一种液晶显示器，所述液晶显示器包括本发明提供的液晶显示器的驱动装置，鉴于该装置在上文已有具体描述，此处不再赘述。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
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  1. 一种液晶显示器，所述液晶显示器包括存储器，时序控制器，脉冲宽度调制芯片，Gamma产生单元以及驱动芯片，其特征在于，
    所述存储器，用于存储背光强度与累计工作时间的对应关系、透光率与高参考电压的对应关系，以及在所述液晶显示器出厂时，记录下出厂时刻液晶显示器的透光率、背光强度以及透光率和背光强度的乘积；
    所述时序控制器，用于读取所述存储器存储的数据；
    所述脉冲宽度调制芯片，用于根据所述液晶显示器的累计工作时间，并通过所述时序控制器读取相应的数据，进而产生高参考电压；
    所述Gamma产生单元，用于根据所述高参考电压产生相应的Gamma参考电压并输入驱动芯片；
    所述驱动芯片，用于驱动所述液晶显示器，
    其中，所述累计工作时间对应的背光强度和所述高参考电压对应的透光率的乘积，与出厂时刻背光强度和透光率和背光强度的乘积相等或者相互接近。
  2. 根据权利要求1所述的液晶显示器，其特征在于，所述液晶显示器还包括计数器或者计时器，所述脉冲宽度调制芯片通过所述计数器或者计时器获取所述液晶显示器的累计工作时间。
  3. 一种液晶显示器的驱动方法，所述方法包括以下步骤：
    获取液晶显示器的累计工作时间；
    根据获取的累计工作时间匹配与所述累计工作时间对应的高参考电压；
    根据匹配到的高参考电压驱动所述液晶显示器；
    其中，在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近。
  4. 根据权利要求3所述的液晶显示器的驱动方法，其特征在于，在获取液晶显示器的累计工作时间的步骤之前，所述方法还包括以下步骤：
    预先存储背光强度与累计工作时间的对应关系，以及透光率与高参考电压的对应关系；
    其中，所述根据获取的累计工作时间匹配与所述累计工作时间对应的高参考电压的步骤具体包括：
    根据获取的累计工作时间在所述背光强度与累计工作时间的对应关系中匹配相应的背光强度；
    根据匹配到的背光强度获取透光率，其中，在获取透光率时，使得在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或相互接近；
    根据获取的透光率在所述透光率与高参考电压的对应关系中查找高参考电压。
  5. 根据权利要求4所述的液晶显示器的驱动方法，其特征在于，在获取液晶显示器的累计工作时间的步骤之前，所述方法还包括以下步骤：
    预先存储gamma曲线，其中，所述gamma曲线对应所述累计工作时间；
    其中，所述根据获取的累计工作时间匹配与所述累计工作时间对应的高参考电压的步骤具体包括：
    根据所述累计工作时间匹配与所述累计工作时间对应的gamma曲线；
    根据匹配到的gamma曲线查找所述gamma曲线对应的高参考电压；
    其中，每一gamma曲线对应一高参考电压，在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或相互接近。
  6. 根据权利要求 5所述的液晶显示器的驱动方法，其特征在于，所述根据获取的累计工作时间匹配与所述累计工作时间对应的高参考电压的步骤之前，所述方法还包括以下步骤：
    记录出厂时刻液晶显示器的透光率、背光强度以及两者的乘积；
    在查找高参考电压时，使得在不同高参考电压下，液晶显示器的透光率和背光强度的乘积与出厂时刻液晶显示器的透光率和背光强度的乘积相等或相互接近。
  7. 根据权利要求3所述的液晶显示器的驱动方法，其特征在于，所述获取液晶显示器的累计工作时间的步骤具体包括：
    通过设置在所述液晶显示器上的计数器或者计时器获取所述液晶显示器的累计工作时间。
  8. 一种液晶显示器的驱动装置，其特征在于，所述装置包括：
    时间获取单元，用于获取液晶显示器的累计工作时间；
    电压匹配单元，用于根据获取的累计工作时间匹配与所述累计工作时间对应的高参考电压；
    驱动单元，用于根据匹配到的液晶显示器的高参考电压驱动所述液晶显示器；
    其中，在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或相互接近。
  9. 根据权利要求8所述的液晶显示器的驱动装置，其特征在于，所述装置还包括存储单元，
    所述存储单元，用于预先存储背光强度与累计工作时间的对应关系，以及透光率与高参考电压的对应关系；
    所述电压匹配单元具体包括：
    背光强度获取单元，用于根据所述时间获取单元获取的累计工作时间在所述背光强度与累计工作时间的对应关系中匹配相应的背光强度；
    透光率获取单元，用于根据所述背光强度获取单元匹配到的背光强度获取透光率，其中，所述透光率获取单元在获取透光率时，使得在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近；
    电压查找单元，用于根据所述透光率获取单元获取的透光率在所述透光率与高参考电压的对应关系中查找高参考电压。
  10. 根据权利要求9所述的液晶显示器的驱动装置，其特征在于，所述存储单元，还用于预先存储gamma曲线，其中，所述gamma曲线对应所述累计工作时间；
    其中，所述电压匹配单元还包括gamma曲线匹配单元，
    所述gamma曲线匹配单元，用于根据所述时间获取单元获取的累计工作时间匹配与所述累计工作时间对应的gamma曲线；
    所述电压查找单元，还用于根据所述gamma曲线匹配单元匹配到的gamma曲线查找所述gamma曲线对应的高参考电压；
    其中，每一gamma曲线对应一高参考电压，在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近。
  11. 根据权利要求10所述的液晶显示器的驱动装置，其特征在于，所述存储单元，还用于记录出厂时刻液晶显示器的透光率、背光强度以及两者的乘积；
    所述电压匹配单元，在匹配高参考电压时，使得在不同高参考电压下，液晶显示器的透光率和背光强度的乘积与出厂时刻液晶显示器的透光率和背光强度的乘积相等或者相互接近。
  12. 根据权利要求8所述的液晶显示器的驱动装置，其特征在于，所述获取液晶显示器还包括计数器或者计时器，所述时间获取单元通过所述计数器或者计时器获取所述液晶显示器的累计工作时间。
  13. 一种液晶显示器，其特征在于，所述液晶显示器包括一液晶显示器的驱动装置，所述装置包括：
    时间获取单元，用于获取液晶显示器的累计工作时间；
    电压匹配单元，用于根据获取的累计工作时间匹配与所述累计工作时间对应的高参考电压；
    驱动单元，用于根据匹配到的液晶显示器的高参考电压驱动所述液晶显示器；
    其中，在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近。
  14. 根据权利要求13所述的液晶显示器，其特征在于，所述装置还包括存储单元，
    所述存储单元，用于预先存储背光强度与累计工作时间的对应关系，以及透光率与高参考电压的对应关系；
    所述电压匹配单元具体包括：
    背光强度获取单元，用于根据所述时间获取单元获取的累计工作时间在所述背光强度与累计工作时间的对应关系中匹配相应的背光强度；
    透光率获取单元，用于根据所述背光强度获取单元匹配到的背光强度获取透光率，其中，所述透光率获取单元在获取透光率时，使得在不同的高参考电压下，所述液晶显示器的透光率和背光强度的乘积相等或者相互接近；
    电压查找单元，用于根据所述透光率获取单元获取的透光率在所述透光率与高参考电压的对应关系中查找高参考电压。
  15. 根据权利要求14所述的液晶显示器，其特征在于，所述存储单元，还用于预先存储gamma曲线，其中，所述gamma曲线对应所述累计工作时间；
    其中，所述电压匹配单元还包括gamma曲线匹配单元，
    所述gamma曲线匹配单元，用于根据所述时间获取单元获取的累计工作时间匹配与所述累计工作时间对应的gamma曲线；
    所述电压查找单元，还用于根据所述gamma曲线匹配单元匹配到的gamma曲线查找所述gamma曲线对应的高参考电压；
    其中，每一gamma曲线对应一高参考电压，在高参考电压下，液晶显示器的透光率和背光强度的乘积相互接近。
  16. 根据权利要求15所述的液晶显示器，其特征在于，所述存储单元，还用于记录出厂时刻液晶显示器的透光率、背光强度以及两者的乘积；
    所述电压匹配单元，在匹配高参考电压时，使得在不同高参考电压下，液晶显示器的透光率和背光强度的乘积与出厂时刻液晶显示器的透光率和背光强度的乘积相等或者相互接近。
  17. 根据权利要求13所述的液晶显示器，其特征在于，所述液晶显示器还包括计数器或者计时器，所述时间获取单元通过所述计数器或者计时器获取所述液晶显示器的累计工作时间。
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