WO2020151415A1 - 显示电压的补偿方法及其装置 - Google Patents

显示电压的补偿方法及其装置 Download PDF

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Publication number
WO2020151415A1
WO2020151415A1 PCT/CN2019/126209 CN2019126209W WO2020151415A1 WO 2020151415 A1 WO2020151415 A1 WO 2020151415A1 CN 2019126209 W CN2019126209 W CN 2019126209W WO 2020151415 A1 WO2020151415 A1 WO 2020151415A1
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Prior art keywords
voltage
value
detection voltage
detection
preset
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PCT/CN2019/126209
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English (en)
French (fr)
Inventor
王雨
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京东方科技集团股份有限公司
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Priority to US16/765,470 priority Critical patent/US11217174B2/en
Publication of WO2020151415A1 publication Critical patent/WO2020151415A1/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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3258—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the voltage across the light-emitting element
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G09G3/3233—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
    • G09G2320/0295—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel by monitoring each display pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating elements
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness

Definitions

  • the present invention relates to the field of display technology, and in particular to a method and device for compensating display voltage.
  • AMOLED Active Matrix/Organic Light Emitting Diode
  • AMOLED is an active matrix organic light emitting diode panel. Compared with traditional liquid crystal panels, AMOLED has the characteristics of faster response, higher contrast, and wider viewing angle.
  • the first object of the present invention is to provide a method for compensating the display voltage, so as to obtain the corresponding threshold voltage through the ratio of different detection voltages corresponding to the display voltage. According to the threshold voltage, the compensation coefficient is calculated, and then the current display voltage is compensated.
  • the second objective of the present invention is to provide a display voltage compensation device.
  • the third objective of the present invention is to provide a computer program product.
  • the fourth objective of the present invention is to provide a non-transitory computer-readable storage medium.
  • an embodiment of the first aspect of the present invention proposes a display voltage compensation method, including: obtaining the first detection voltage and the second detection voltage corresponding to the first preset value and the second preset value respectively. , And calculate the ratio of the first detection voltage to the second detection voltage; obtain the threshold voltage corresponding to the ratio of the first detection voltage and the second detection voltage from a preset correspondence table; obtain the current display Voltage; calculate a compensation coefficient according to the threshold voltage; and compensate the current display voltage according to the threshold voltage and the compensation coefficient.
  • the embodiment of the present invention obtains the corresponding threshold voltage by displaying the ratio of the different detection voltages corresponding to the voltage. According to the threshold voltage, the compensation coefficient is calculated, and then the current display voltage is compensated.
  • the technical problem in the prior art that the temperature affects the current display voltage and thereby affects the display effect is solved.
  • the display voltage compensation method of the embodiment of the present invention also has the following additional technical features:
  • the preset correspondence table is generated by the following steps: acquiring the third detection voltage and the fourth detection voltage corresponding to the first preset value and the second preset value when the display voltage is respectively the first preset value and the second preset value during shutdown; According to the following formula, the threshold voltage corresponding to the ratio of the third detection voltage to the fourth detection voltage is generated: Wherein, V th is the threshold voltage, V1 is the third detection voltage, V2 is the fourth detection voltage, Is the ratio of the third detection voltage to the fourth detection voltage, data1 is the first preset value, and data2 is the second preset value; according to the third detection voltage and the fourth detection The ratio of the voltages, and the corresponding threshold voltage, generate the preset correspondence table.
  • the calculating the compensation coefficient according to the threshold voltage includes: obtaining a randomly generated voltage value; adding the threshold voltage value and the randomly generated voltage value to obtain the input voltage value; The fifth detection voltage corresponding to the input voltage value; the compensation coefficient is calculated according to the following formula: Where K is the compensation coefficient, V is the voltage value corresponding to the preset display brightness, where the preset display brightness is the display brightness that the screen needs to achieve after the current display voltage is compensated, and V sense is the The fifth detection voltage corresponding to the input voltage value.
  • An embodiment of the second aspect of the present invention provides a display voltage compensation device, including: a first acquisition module for acquiring a first detection voltage and a corresponding first detection voltage when the display voltage is a first preset value and a second preset value, respectively A second detection voltage; a first calculation module for calculating the ratio of the first detection voltage to the second detection voltage; a second acquisition module for obtaining the first detection voltage from a preset correspondence table A threshold voltage corresponding to the ratio of the second detection voltage; a third acquisition module for acquiring the current display voltage; a second calculation module for calculating a compensation coefficient based on the threshold voltage; and a compensation module for The threshold voltage and the compensation coefficient compensate the current display voltage.
  • the display voltage compensation device of the embodiment of the present invention also has the following additional technical features:
  • the device further includes the following module to generate the preset correspondence table: a fourth obtaining module, configured to obtain when the display voltage is the first preset value and the second preset value when the power is off Corresponding third detection voltage and fourth detection voltage; a first generation module, configured to generate the threshold voltage corresponding to the ratio of the third detection voltage to the fourth detection voltage according to the following formula: Wherein, V th is the threshold voltage, V1 is the third detection voltage, V2 is the fourth detection voltage, Is the ratio of the third detection voltage to the fourth detection voltage, data1 is the first preset value, and data2 is the second preset value; the second generation module is used to detect according to the third The ratio of the voltage to the fourth detection voltage and the corresponding threshold voltage generate the preset correspondence table.
  • a fourth obtaining module configured to obtain when the display voltage is the first preset value and the second preset value when the power is off Corresponding third detection voltage and fourth detection voltage
  • a first generation module configured to generate the threshold voltage corresponding to the ratio of the third detection voltage to the fourth
  • the second calculation module includes: a first acquisition sub-module for acquiring a randomly generated voltage value; and an addition sub-module for comparing the threshold voltage value with the randomly generated voltage value Add to obtain the input voltage value; the second acquisition sub-module is used to obtain the fifth detection voltage corresponding to the input voltage value; the first calculation sub-module is used to calculate the compensation coefficient according to the following formula: Where K is the compensation coefficient, V is the voltage value corresponding to the preset display brightness, where the preset display brightness is the display brightness that the screen needs to achieve after the current display voltage is compensated, and V sense is the The fifth detection voltage corresponding to the input voltage value.
  • An embodiment of the third aspect of the present invention provides a computer program product, which when executed by an instruction processor in the computer program product, implements the display voltage compensation method as described in the foregoing method embodiment.
  • the embodiment of the fourth aspect of the present invention proposes a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the display voltage compensation method as described in the foregoing method embodiment is implemented .
  • FIG. 1 is a schematic structural diagram of a compensation circuit provided by an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the voltage value changes at various positions in the compensation circuit provided by the embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a display voltage compensation method provided by an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a display voltage compensation device provided by an embodiment of the present invention.
  • AMOLED screens often suffer from poor uniformity, and temperature changes are likely to cause threshold voltage drift, which affects the current display voltage, thereby affecting the display effect.
  • the embodiment of the present invention provides a method for compensating the display voltage, which obtains the corresponding threshold voltage through the ratio of different detection voltages corresponding to the display voltage. According to the threshold voltage, the compensation coefficient is calculated, and then the current display voltage is compensated.
  • the embodiment of the present invention proposes a compensation circuit. As shown in Figure 1, VDD is used for input threshold voltage, DATA is used for output display voltage, Senseline is used for detecting voltage, and VSS is used for grounding.
  • FIG. 3 is a schematic flowchart of a method for compensating display voltage according to an embodiment of the present invention. As shown in Figure 3, the method includes the following steps:
  • S101 Acquire a first detection voltage and a second detection voltage corresponding to a first preset value and a second preset value, respectively, and calculate a ratio of the first detection voltage to the second detection voltage.
  • the display voltage is the voltage of DATA in FIG. 1, and when the voltage of DATA is the first preset value and the second preset value, the voltages corresponding to the sense line are the first detection voltage and the second detection voltage, respectively.
  • the threshold voltage may have drifted during the normal operation of the screen, and the true threshold voltage cannot be obtained by directly measuring VDD.
  • the display voltage compensation method provided by the embodiment of the present invention obtains the true threshold voltage indirectly by calculating the ratio of the first detection voltage and the second detection voltage.
  • S102 Acquire a threshold voltage corresponding to the ratio of the first detection voltage to the second detection voltage from a preset correspondence table.
  • the preset correspondence table includes the correspondence between the ratio of the first detection voltage and the second detection voltage and the true threshold voltage.
  • one possible implementation manner is to obtain the third detection voltage and the fourth detection voltage corresponding to the first preset value and the second preset value when the display voltage is respectively the first preset value and the second preset value during shutdown.
  • the display voltages obtained during shutdown are the third detection voltage and the fourth detection voltage corresponding to the first preset value and the second preset value, respectively, which avoids the influence of temperature on the detection voltage value.
  • the threshold voltage corresponding to the ratio of the third detection voltage to the fourth detection voltage is generated:
  • V th is the threshold voltage
  • V1 is the third detection voltage
  • V2 is the fourth detection voltage
  • data1 is the first preset value
  • data2 is the second preset value. According to the ratio of the third detection voltage to the fourth detection voltage and the corresponding threshold voltage, a preset correspondence table is generated.
  • V1 and V2 satisfy the following formula:
  • V1 K*T(data1-V th ) 2
  • V2 K*T(data2-V th ) 2
  • K represents mobility
  • T represents time
  • data1 and data2 represent the first preset value
  • V th is the threshold voltage
  • data1 and data2 are both constants, so in the above formula can be As an independent variable, V th as a dependent variable, and V th and The corresponding relationship.
  • the preset correspondence table records For the correspondence relationship with V th , after the ratio of the first detection voltage to the second detection voltage is determined, the true threshold voltage can be obtained by querying the preset correspondence table.
  • the current displayed voltage is the voltage that has not been compensated.
  • S104 Calculate the compensation coefficient according to the threshold voltage.
  • one possible implementation is to obtain a randomly generated voltage value, and add the threshold voltage value and the randomly generated voltage value to obtain the input voltage value.
  • the threshold voltage cannot make the screen reach the preset display brightness, and the voltage value needs to be increased on the basis of the threshold voltage to make the screen reach the preset display brightness. That is, a voltage value is added as the input voltage value of VDD on the basis of the threshold voltage.
  • the compensation coefficient is calculated according to the following formula:
  • K is the compensation coefficient
  • V is the voltage value corresponding to the preset display brightness
  • the preset display brightness is the display brightness that the screen needs to achieve after the current display voltage is compensated
  • V sense is the fifth detection corresponding to the input voltage value. Voltage.
  • the compensation coefficient here is essentially the same as the aforementioned mobility. It is precisely because of the aforementioned mobility that the compensation coefficient needs to be calculated to correct the display voltage.
  • S105 Compensate the current display voltage according to the threshold voltage and the compensation coefficient.
  • a possible implementation is to use the following formula to calculate the current display voltage after compensation:
  • data3 K*data+V th , where data3 is the value of the currently displayed voltage after compensation, K is the compensation coefficient, data is the value of the currently displayed voltage, and V th is the threshold voltage.
  • the display voltage compensation method obtains the first detection voltage and the second detection voltage corresponding to the first preset value and the second preset value respectively, and Calculate the ratio of the first detection voltage to the second detection voltage.
  • the threshold voltage corresponding to the ratio of the first detection voltage to the second detection voltage is obtained from the preset correspondence table.
  • the current display voltage is compensated. In this way, it is achieved that the corresponding threshold voltage is obtained by displaying the ratio of different detection voltages corresponding to the voltage.
  • the compensation coefficient is calculated, and then the current display voltage is compensated.
  • FIG. 4 is a schematic structural diagram of a display voltage compensation device provided by an embodiment of the present invention. As shown in FIG. 4, the device includes :First acquisition module 210, first calculation module 220, second acquisition module 230, third acquisition module 240, second calculation module 250, compensation module 260.
  • the first acquisition module 210 is configured to acquire the first detection voltage and the second detection voltage corresponding to the first preset value and the second preset value respectively.
  • the first calculation module 220 is used to calculate the ratio of the first detection voltage to the second detection voltage.
  • the second acquisition module 230 is configured to acquire the threshold voltage corresponding to the ratio of the first detection voltage to the second detection voltage from a preset correspondence table.
  • the third obtaining module 240 is used to obtain the current display voltage.
  • the second calculation module 250 is used to calculate the compensation coefficient according to the threshold voltage.
  • the compensation module 260 is used to compensate the current display voltage according to the threshold voltage and the compensation coefficient.
  • the device further includes the following module to generate the preset correspondence table: a fourth acquisition module, which is used to acquire the display voltage of the first The third detection voltage and the fourth detection voltage corresponding to the preset value and the second preset value.
  • the first generation module is configured to generate the threshold voltage corresponding to the ratio of the third detection voltage to the fourth detection voltage according to the following formula:
  • V th is the threshold voltage
  • V1 is the third detection voltage
  • V2 is the fourth detection voltage
  • data1 is the first preset value
  • data2 is the second preset value.
  • the second generating module 290 is configured to generate a preset correspondence table according to the ratio of the third detection voltage to the fourth detection voltage and the corresponding threshold voltage.
  • the second calculation module 250 includes: a first acquisition sub-module configured to acquire a randomly generated voltage value.
  • the addition sub-module is used to add the threshold voltage value and the randomly generated voltage value to obtain the input voltage value.
  • the second acquisition sub-module is used to acquire the fifth detection voltage corresponding to the input voltage value.
  • the first calculation sub-module is used to calculate the compensation coefficient corresponding to the preset display brightness according to the following formula:
  • K is the compensation coefficient
  • V is the voltage value corresponding to the preset display brightness
  • the preset display brightness is the display brightness that the screen needs to achieve after the current display voltage is compensated
  • V sense is the fifth detection corresponding to the input voltage value. Voltage.
  • the compensation module 260 includes: a second calculation sub-module for calculating the current display voltage after compensation using the following formula:
  • data3 is the value of the current display voltage after compensation
  • K is the compensation coefficient
  • data is the value of the current display voltage
  • V th is the threshold voltage.
  • the change sub-module is used to change the value of the current display voltage to the value of the current display voltage after compensation.
  • the display voltage compensation device obtains the first detection voltage and the second detection voltage corresponding to the first preset value and the second preset value respectively, and Calculate the ratio of the first detection voltage to the second detection voltage.
  • the threshold voltage corresponding to the ratio of the first detection voltage to the second detection voltage is obtained from the preset correspondence table.
  • the current display voltage is compensated. In this way, it is achieved that the corresponding threshold voltage is obtained by displaying the ratio of different detection voltages corresponding to the voltage.
  • the compensation coefficient is calculated, and then the current display voltage is compensated.
  • the embodiment of the present invention also provides a computer program product, which when executed by the instruction processor in the computer program product, implements the display voltage compensation method as described in the foregoing method embodiment.
  • the embodiment also proposes a non-transitory computer-readable storage medium on which a computer program is stored.
  • the computer program is executed by a processor, the display voltage compensation as described in the foregoing method embodiment is realized. method.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present invention, "a plurality of” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , Or into a whole; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two components or the interaction relationship between two components, unless otherwise specified The limit.
  • installed e.g., it may be a fixed connection or a detachable connection , Or into a whole; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two components or the interaction relationship between two components, unless otherwise specified The limit.
  • the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
  • the "on” or “under” of the first feature on the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. contact.
  • the "above”, “above” and “above” of the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

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  • Physics & Mathematics (AREA)
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Abstract

一种显示电压的补偿方法及其装置。显示电压的补偿方法包括：获取显示电压分别为第一预设数值和第二预设数值时对应的第一检测电压和第二检测电压，并且计算第一检测电压和第二检测电压的比值（S101）；从预设的对应表中获取第一检测电压和第二检测电压的比值对应的阈值电压（S102）；获取当前显示电压（S103）；根据阈值电压，计算补偿系数（S104）；根据阈值电压和补偿系数，对当前显示电压进行补偿（S105）。实现了通过显示电压对应的不同检测电压的比值获取对应的阈值电压，根据阈值电压计算补偿系数，进而对当前显示电压进行补偿，解决了现有技术中温度对当前显示电压造成影响，进而影响显示效果的技术问题。

Description

显示电压的补偿方法及其装置
相关申请的交叉引用
本发明要求京东方科技集团股份有限公司于2019年01月24日提交的、发明名称为“显示电压的补偿方法及其装置”的、中国专利申请号“201910067385.6”的优先权。
技术领域
本发明涉及显示技术领域，尤其涉及一种显示电压的补偿方法及其装置。
背景技术
AMOLED(Active Matrix/Organic Light Emitting Diode)屏幕是指以AMOLED材料为主的屏幕，AMOLED是有源矩阵有机发光二极体面板。相比传统的液晶面板，AMOLED具有反应速度较快、对比度更高、视角较广等特点。
发明内容
本发明的第一个目的在于提出一种显示电压的补偿方法，以实现通过显示电压对应的不同检测电压的比值，获取对应的阈值电压。根据阈值电压，计算补偿系数，进而对当前显示电压进行补偿。
本发明的第二个目的在于提出一种显示电压的补偿装置。
本发明的第三个目的在于提出一种计算机程序产品。
本发明的第四个目的在于提出一种非临时性计算机可读存储介质。
为达上述目的，本发明第一方面实施例提出了显示电压的补偿方法，包括：获取显示电压分别为第一预设数值和第二预设数值时对应的第一检测电压和第二检测电压，并且计算所述第一检测电压和所述第二检测电压的比值；从预设的对应表中获取所述第一检测电压和所述第二检测电压的比值对应的阈值电压；获取当前显示电压；根据所述阈值电压，计算补偿系数；以及根据所述阈值电压和所述补偿系数，对所述当前显示电压进行补偿。
和现有技术相比，本发明实施例通过显示电压对应的不同检测电压的比值，获取对应的阈值电压。根据阈值电压，计算补偿系数，进而对当前显示电压进行补偿。解决了现有技术中温度对当前显示电压造成影响，进而影响显示效果的技术问题。
另外，本发明实施例的显示电压的补偿方法，还具有如下附加的技术特征：
可选地，所述预设的对应表通过以下步骤生成：在关机时获取所述显示电压分别为第一预设数值和第二预设数值时对应的第三检测电压和第四检测电压；根据以下公式，生成所述第三检测电压和所述第四检测电压的比值对应的所述阈值电压：
Figure PCTCN2019126209-appb-000001
其中，V th为所述阈值电压，V1为所述第三检测电压，V2为所述第四检测电压，
Figure PCTCN2019126209-appb-000002
为所述第三检测电压和所述第四检测电压的比值，data1为所述第一预设数值，data2为所述第二预设数值；根据所述第三检测电压和所述第四检测电压的比值，以及对应的所述阈值电压，生成所述预设的对应表。
可选地，所述根据所述阈值电压，计算补偿系数，包括：获取随机生成的电压数值；将所述阈值电压的数值和所述随机生成电压数值相加，以获得输入电压数值；获取所述输入电压数值对应的第五检测电压；根据以下公式计算得到补偿系数：
Figure PCTCN2019126209-appb-000003
其中，K为所述补偿系数，V为预设显示亮度对应的电压数值，其中，所述预设显示亮度是所述当前显示电压经过补偿之后，屏幕需要达到的显示亮度，V sense为所述输入电压数值对应的第五检测电压。
可选地，所述根据所述阈值电压和所述补偿系数，对所述当前显示电压进行补偿，包括：使用以下公式计算补偿后的所述当前显示电压：data3＝K*data+V th，其中，data3为补偿后的所述当前显示电压的数值，K为所述补偿系数，data为所述当前显示电压的数值，V th为所述阈值电压；将所述当前显示电压的数值变更为补偿后的所述当前显示电压的数值。
本发明第二方面实施例提出了一种显示电压的补偿装置，包括：第一获取模块，用于获取显示电压分别为第一预设数值和第二预设数值时对应的第一检测电压和第二检测电压；第一计算模块，用于计算所述第一检测电压和所述第二检测电压的比值；第二获取模块，用于从预设的对应表中获取所述第一检测电压和所述第二检测电压的比值对应的阈值电压；第三获取模块，用于获取当前显示电压；第二计算模块，用于根据所述阈值电压，计算补偿系数；以及补偿模块，用于根据所述阈值电压和所述补偿系数，对所述当前显示电压进行补偿。
另外，本发明实施例的显示电压的补偿装置，还具有如下附加的技术特征：
可选地，所述装置还包括以下模块来生成所述预设的对应表：第四获取模块，用于在关机时获取所述显示电压分别为第一预设数值和第二预设数值时对应的第三检测电压和第四检测电压；第一生成模块，用于根据以下公式，生成所述第三检测电压和所述第四检测 电压的比值对应的所述阈值电压：
Figure PCTCN2019126209-appb-000004
其中，V th为所述阈值电压，V1为所述第三检测电压，V2为所述第四检测电压，
Figure PCTCN2019126209-appb-000005
为所述第三检测电压和所述第四检测电压的比值，data1为所述第一预设数值，data2为所述第二预设数值；第二生成模块，用于根据所述第三检测电压和所述第四检测电压的比值，以及对应的所述阈值电压，生成所述预设的对应表。
可选地，所述第二计算模块，包括：第一获取子模块，用于获取随机生成的电压数值；相加子模块，用于将所述阈值电压的数值和所述随机生成电压数值相加，以获得输入电压数值；第二获取子模块，用于获取所述输入电压数值对应的第五检测电压；第一计算子模块，用于根据以下公式计算得到补偿系数：
Figure PCTCN2019126209-appb-000006
其中，K为所述补偿系数，V为预设显示亮度对应的电压数值，其中，所述预设显示亮度是所述当前显示电压经过补偿之后，屏幕需要达到的显示亮度，V sense为所述输入电压数值对应的第五检测电压。
可选地，所述补偿模块，包括：第二计算子模块，用于使用以下公式计算补偿后的所述当前显示电压：data3＝K*data+V th，其中，data3为补偿后的所述当前显示电压的数值，K为所述补偿系数，data为所述当前显示电压的数值，V th为所述阈值电压；变更子模块，用于将所述当前显示电压的数值变更为补偿后的所述当前显示电压的数值。
本发明第三方面实施例提出了一种计算机程序产品，当所述计算机程序产品中的指令处理器执行时实现如前述方法实施例所述的显示电压的补偿方法。
本发明第四方面实施例提出了一种非临时性计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现如前述方法实施例所述的显示电压的补偿方法。
本发明附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例所提供的一种补偿电路的结构示意图；
图2为本发明实施例所提供的补偿电路中各个位置的电压数值变化的示意图；
图3为本发明实施例所提供的一种显示电压的补偿方法的流程示意图；以及
图4为本发明实施例所提供的一种显示电压的补偿装置的结构示意图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
下面参考附图描述本发明实施例的一种显示电压的补偿方法及其装置。
基于上述现有技术的描述可以知道，相关技术中，AMOLED屏幕往往存在均一性不好的问题，温度的变化容易产生阈值电压漂移，对当前显示电压造成影响，进而影响显示效果。
针对这一问题，本发明实施例提供了一种显示电压的补偿方法，通过显示电压对应的不同检测电压的比值，获取对应的阈值电压。根据阈值电压，计算补偿系数，进而对当前显示电压进行补偿。
需要说明的是，为了实现本发明实施例所提供的显示电压的补偿方法，本发明实施例提出了一种补偿电路。如图1所示，VDD用于输入阈值电压，DATA用于输出显示电压，Sense line用于检测电压，VSS用于接地。
需要说明的是，图1中补偿电路各个位置的电压数值变化如图2所示，其中RESET中的电压变化用于触发对Sense line充电。只要DATA的数值为一个常数，图1中补偿电路各个位置的电压数值变化都符合图2所示的变化情况，但是各个位置的电压数值变化的幅值大小与DATA的数值有关。
图3为本发明实施例所提供的一种显示电压的补偿方法的流程示意图。如图3所示，该方法包括以下步骤：
S101，获取显示电压分别为第一预设数值和第二预设数值时对应的第一检测电压和第二检测电压，并且计算第一检测电压和第二检测电压的比值。
其中，显示电压为图1中DATA的电压，当DATA的电压分别为第一预设数值和第二预设数值时，Sense line对应电压分别为第一检测电压和第二检测电压。
此时，屏幕在正常工作中，阈值电压可能已经产生了漂移，不能通过直接测量VDD获得真实的阈值电压。
本发明实施例提供的显示电压的补偿方法通过计算第一检测电压和第二检测电压的比值来间接获得真实的阈值电压。
S102，从预设的对应表中获取第一检测电压和第二检测电压的比值对应的阈值电压。
其中，预设的对应表中包括第一检测电压和第二检测电压的比值与真实阈值电压的对应关系。
为了生成预设的对应表，一种可能的实现方式是，在关机时获取显示电压分别为第一预设数值和第二预设数值时对应的第三检测电压和第四检测电压。
可以理解，在关机时获取的显示电压分别为第一预设数值和第二预设数值时对应的第三检测电压和第四检测电压，避免了温度对检测电压数值的影响。
根据以下公式，生成第三检测电压和第四检测电压的比值对应的阈值电压：
Figure PCTCN2019126209-appb-000007
其中，V th为阈值电压，V1为第三检测电压，V2为第四检测电压，
Figure PCTCN2019126209-appb-000008
为第三检测电压和第四检测电压的比值，data1为第一预设数值，data2为第二预设数值。根据第三检测电压和第四检测电压的比值，以及对应的阈值电压，生成预设的对应表。
需要说明的是，由于V1和V2满足以下公式：
V1＝K*T(data1-V th) 2，V2＝K*T(data2-V th) 2，其中，K表示迁移率，T表示时间，data1和data2分别表示第一预设数值和第二预设数值，V th为阈值电压。
由于迁移率无法直接测得，但是可以通过计算比值的方式进行抵消，即
Figure PCTCN2019126209-appb-000009
经过数学变换后可以得到如下公式：
Figure PCTCN2019126209-appb-000010
其中，data1和data2都是常数，因此在上述公式中可将
Figure PCTCN2019126209-appb-000011
看作自变量，V th看作应变量，得到V th与
Figure PCTCN2019126209-appb-000012
的对应关系。
换句话说，当
Figure PCTCN2019126209-appb-000013
的数值发生变化时，V th的大小也会发生变化。
因此，预设的对应表中记录了
Figure PCTCN2019126209-appb-000014
与V th的对应关系，在确定了第一检测电压和第二检测电压的比值之后，可以通过查询预设的对应表获得真实的阈值电压。
S103，获取当前显示电压。
其中，当前显示电压是尚未进行补偿的电压。
S104，根据阈值电压，计算补偿系数。
为了计算预设显示亮度对应的补偿系数，一种可能的实现方式是，获取随机生成的电 压数值，将阈值电压的数值和随机生成电压数值相加，以获得输入电压数值。
应当理解的是，阈值电压无法让屏幕达到预设显示亮度，需要在阈值电压的基础上增加电压数值，来让屏幕达到预设显示亮度。即在阈值电压的基础上增加一个电压数值作为VDD的输入电压数值。
获取输入电压数值对应的第五检测电压，其中，第五检测电压的数值大小受到了迁移率的影响。
根据以下公式计算得到补偿系数：
Figure PCTCN2019126209-appb-000015
其中，K为补偿系数，V为预设显示亮度对应的电压数值，其中，预设显示亮度是当前显示电压经过补偿之后，屏幕需要达到的显示亮度，V sense为输入电压数值对应的第五检测电压。
需要说明的是，此处的补偿系数和前述的迁移率本质上是一样的，正是因为前述迁移率的存在，才需要计算补偿系数来对显示电压进行修正。
S105，根据阈值电压和补偿系数，对当前显示电压进行补偿。
一种可能的实现方式是，使用以下公式计算补偿后的当前显示电压：
data3＝K*data+V th，其中，data3为补偿后的当前显示电压的数值，K为补偿系数，data为当前显示电压的数值，V th为阈值电压。
将当前显示电压的数值变更为补偿后的当前显示电压的数值。
综上所述，本发明实施例所提供的一种显示电压的补偿方法，获取显示电压分别为第一预设数值和第二预设数值时对应的第一检测电压和第二检测电压，并且计算第一检测电压和第二检测电压的比值。从预设的对应表中获取第一检测电压和第二检测电压的比值对应的阈值电压。获取当前显示电压和预设显示亮度，根据阈值电压，计算预设显示亮度对应的补偿系数。根据阈值电压和补偿系数，对当前显示电压进行补偿。由此，实现了通过显示电压对应的不同检测电压的比值，获取对应的阈值电压。根据阈值电压，计算补偿系数，进而对当前显示电压进行补偿。
为了实现上述实施例，本发明实施例还提出一种显示电压的补偿装置，图4为本发明实施例所提供的一种显示电压的补偿装置的结构示意图，如图4所示，该装置包括：第一获取模块210，第一计算模块220，第二获取模块230，第三获取模块240，第二计算模块250，补偿模块260。
第一获取模块210，用于获取显示电压分别为第一预设数值和第二预设数值时对应的第一检测电压和第二检测电压。
第一计算模块220，用于计算第一检测电压和第二检测电压的比值。
第二获取模块230，用于从预设的对应表中获取第一检测电压和第二检测电压的比值对应的阈值电压。
第三获取模块240，用于获取当前显示电压。
第二计算模块250，用于根据阈值电压，计算补偿系数。
补偿模块260，用于根据阈值电压和补偿系数，对当前显示电压进行补偿。
进一步地，为了生成预设的对应表，一种可能的实现方式是，该装置还包括以下模块来生成预设的对应表：第四获取模块，用于在关机时获取显示电压分别为第一预设数值和第二预设数值时对应的第三检测电压和第四检测电压。第一生成模块，用于根据以下公式，生成第三检测电压和第四检测电压的比值对应的阈值电压：
Figure PCTCN2019126209-appb-000016
其中，V th为阈值电压，V1为第三检测电压，V2为第四检测电压，
Figure PCTCN2019126209-appb-000017
为第三检测电压和第四检测电压的比值，data1为第一预设数值，data2为第二预设数值。第二生成模块290，用于根据第三检测电压和第四检测电压的比值，以及对应的阈值电压，生成预设的对应表。
进一步地，为了计算补偿系数，一种可能的实现方式是，第二计算模块250，包括：第一获取子模块，用于获取随机生成的电压数值。相加子模块，用于将阈值电压的数值和随机生成电压数值相加，以获得输入电压数值。第二获取子模块，用于获取输入电压数值对应的第五检测电压。第一计算子模块，用于根据以下公式计算得到预设显示亮度对应的补偿系数：
Figure PCTCN2019126209-appb-000018
其中，K为补偿系数，V为预设显示亮度对应的电压数值，其中，预设显示亮度是当前显示电压经过补偿之后，屏幕需要达到的显示亮度，V sense为输入电压数值对应的第五检测电压。
进一步地，为了对当前显示电压进行补偿，一种可能的实现方式是，补偿模块260，包括：第二计算子模块，用于使用以下公式计算补偿后的当前显示电压：
data3＝K*data+V th，
其中，data3为补偿后的当前显示电压的数值，K为补偿系数，data为当前显示电压的数值，V th为阈值电压。变更子模块，用于将当前显示电压的数值变更为补偿后的当前显 示电压的数值。
需要说明的是，前述对基于显示电压的补偿方法实施例的解释说明也适用于该实施例的显示电压的补偿装置，此处不再赘述。
综上所述，本发明实施例所提供的一种显示电压的补偿装置，获取显示电压分别为第一预设数值和第二预设数值时对应的第一检测电压和第二检测电压，并且计算第一检测电压和第二检测电压的比值。从预设的对应表中获取第一检测电压和第二检测电压的比值对应的阈值电压。获取当前显示电压和预设显示亮度，根据阈值电压，计算预设显示亮度对应的补偿系数。根据阈值电压和补偿系数，对当前显示电压进行补偿。由此，实现了通过显示电压对应的不同检测电压的比值，获取对应的阈值电压。根据阈值电压，计算补偿系数，进而对当前显示电压进行补偿。
为了实现上述实施例，本发明实施例还提出一种计算机程序产品，当所述计算机程序产品中的指令处理器执行时实现如前述方法实施例所述的显示电压的补偿方法。
为了实现上述实施例，实施例还提出一种非临时性计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现如前述方法实施例所述的显示电压的补偿方法。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、 或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种显示电压的补偿方法，其特征在于，包括：
    获取显示电压分别为第一预设数值和第二预设数值时对应的第一检测电压和第二检测电压，并且计算所述第一检测电压和所述第二检测电压的比值；
    从预设的对应表中获取所述第一检测电压和所述第二检测电压的比值对应的阈值电压；
    获取当前显示电压；
    根据所述阈值电压，计算补偿系数；以及
    根据所述阈值电压和所述补偿系数，对所述当前显示电压进行补偿。
  2. 如权利要求1所述的方法，其特征在于，所述预设的对应表通过以下步骤生成：
    在关机时获取所述显示电压分别为第一预设数值和第二预设数值时对应的第三检测电压和第四检测电压；
    根据以下公式，生成所述第三检测电压和所述第四检测电压的比值对应的所述阈值电压：
    Figure PCTCN2019126209-appb-100001
    其中，V th为所述阈值电压，V1为所述第三检测电压，V2为所述第四检测电压，
    Figure PCTCN2019126209-appb-100002
    为所述第三检测电压和所述第四检测电压的比值，data1为所述第一预设数值，data2为所述第二预设数值；
    根据所述第三检测电压和所述第四检测电压的比值，以及对应的所述阈值电压，生成所述预设的对应表。
  3. 如权利要求1所述的方法，其特征在于，所述根据所述阈值电压，计算补偿系数，包括：
    获取随机生成的电压数值；
    将所述阈值电压的数值和所述随机生成电压数值相加，以获得输入电压数值；
    获取所述输入电压数值对应的第五检测电压；
    根据以下公式计算得到补偿系数：
    Figure PCTCN2019126209-appb-100003
    其中，K为所述补偿系数，V为预设显示亮度对应的电压数值，其中，所述预设显示 亮度是所述当前显示电压经过补偿之后，屏幕需要达到的显示亮度，V sense为所述输入电压数值对应的第五检测电压。
  4. 如权利要求1所述的方法，其特征在于，所述根据所述阈值电压和所述补偿系数，对所述当前显示电压进行补偿，包括：
    使用以下公式计算补偿后的所述当前显示电压：
    data3＝K*data+V th，
    其中，data3为补偿后的所述当前显示电压的数值，K为所述补偿系数，data为所述当前显示电压的数值，V th为所述阈值电压；
    将所述当前显示电压的数值变更为补偿后的所述当前显示电压的数值。
  5. 一种显示电压的补偿装置，其特征在于，包括：
    第一获取模块，用于获取显示电压分别为第一预设数值和第二预设数值时对应的第一检测电压和第二检测电压；
    第一计算模块，用于计算所述第一检测电压和所述第二检测电压的比值；
    第二获取模块，用于从预设的对应表中获取所述第一检测电压和所述第二检测电压的比值对应的阈值电压；
    第三获取模块，用于获取当前显示电压；
    第二计算模块，用于根据所述阈值电压，计算补偿系数；以及
    补偿模块，用于根据所述阈值电压和所述补偿系数，对所述当前显示电压进行补偿。
  6. 如权利要求5所述的装置，其特征在于，所述装置还包括以下模块来生成所述预设的对应表：
    第四获取模块，用于在关机时获取所述显示电压分别为第一预设数值和第二预设数值时对应的第三检测电压和第四检测电压；
    第一生成模块，用于根据以下公式，生成所述第三检测电压和所述第四检测电压的比值对应的所述阈值电压：
    Figure PCTCN2019126209-appb-100004
    其中，V th为所述阈值电压，V1为所述第三检测电压，V2为所述第四检测电压，
    Figure PCTCN2019126209-appb-100005
    为所述第三检测电压和所述第四检测电压的比值，data1为所述第一预设数值，data2为所述第二预设数值；
    第二生成模块，用于根据所述第三检测电压和所述第四检测电压的比值，以及对应的所述阈值电压，生成所述预设的对应表。
  7. 如权利要求5所述的装置，其特征在于，所述第二计算模块，包括：
    第一获取子模块，用于获取随机生成的电压数值；
    相加子模块，用于将所述阈值电压的数值和所述随机生成电压数值相加，以获得输入电压数值；
    第二获取子模块，用于获取所述输入电压数值对应的第五检测电压；
    第一计算子模块，用于根据以下公式计算得到所述预设显示亮度对应的补偿系数：
    Figure PCTCN2019126209-appb-100006
    其中，K为所述补偿系数，V为预设显示亮度对应的电压数值，其中，所述预设显示亮度是所述当前显示电压经过补偿之后，屏幕需要达到的显示亮度，V sense为所述输入电压数值对应的第五检测电压。
  8. 如权利要求5所述的装置，其特征在于，所述补偿模块，包括：
    第二计算子模块，用于使用以下公式计算补偿后的所述当前显示电压：
    data3＝K*data+V th，
    其中，data3为补偿后的所述当前显示电压的数值，K为所述补偿系数，data为所述当前显示电压的数值，V th为所述阈值电压；
    变更子模块，用于将所述当前显示电压的数值变更为补偿后的所述当前显示电压的数值。
  9. 一种计算机程序产品，其特征在于，当所述计算机程序产品中的指令处理器执行时实现如权利要求1-4中任一项所述的显示电压的补偿方法。
  10. 一种非临时性计算机可读存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求1-4中任一项所述的显示电压的补偿方法。
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