WO2017201796A1 - 一种驱动方法、驱动装置及内嵌式触摸屏 - Google Patents

一种驱动方法、驱动装置及内嵌式触摸屏 Download PDF

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Publication number
WO2017201796A1
WO2017201796A1 PCT/CN2016/087252 CN2016087252W WO2017201796A1 WO 2017201796 A1 WO2017201796 A1 WO 2017201796A1 CN 2016087252 W CN2016087252 W CN 2016087252W WO 2017201796 A1 WO2017201796 A1 WO 2017201796A1
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WO
WIPO (PCT)
Prior art keywords
gray scale
scale voltage
gamma value
cell touch
transmittance
Prior art date
Application number
PCT/CN2016/087252
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English (en)
French (fr)
Inventor
李曼
纪飞林
陈伟
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武汉华星光电技术有限公司
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Priority to US15/118,879 priority Critical patent/US20180158391A1/en
Publication of WO2017201796A1 publication Critical patent/WO2017201796A1/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
    • G09G3/2007—Display of intermediate tones
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G06F3/04184—Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
    • 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
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
    • G09G2320/0214—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display with crosstalk due to leakage current of pixel switch in active matrix panels
    • 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
    • G09G2320/02—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
    • G09G2320/06—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 display technologies, and in particular, to a driving method, a driving device, and an in-cell touch panel.
  • the Full In-Cell touch screen is an in-cell touch screen that fully integrates the touch electrodes into the liquid crystal cell, and has the advantages of being thin and light, and having low cost.
  • the touch scan and display scan of the Full In-Cell touch screen are performed simultaneously, the display function and the touch function easily interfere with each other.
  • the prior art generally adopts a time-division driving method, and divides the unit time into a display time period and a touch time period, and performs display scanning and touch scanning respectively.
  • the thin film transistor (TFT) of the pixel should be turned off, and the display of the picture is maintained by the capacitive effect of the liquid crystal.
  • TFT thin film transistor
  • there is leakage current in the pixel When the leakage current reaches a certain level, the pixel TFT can be turned on to form a leakage path from the liquid crystal capacitor to the TFT source. The leakage will cause a loss of brightness of the pixel, so that when the same frame is displayed, the brightness of the display period and the touch period are inconsistent, thereby reducing the display quality and the visual experience.
  • Embodiments of the present invention provide a driving method, a driving device, and an in-cell touch panel, which can improve display brightness uniformity and visual experience of an in-cell touch panel.
  • a first aspect of the embodiments of the present invention provides a driving method, which is applied to an in-cell touch panel, and the driving method includes:
  • determining a second gray scale voltage according to the second gamma value determining a second gray scale voltage according to the second gamma value, and inputting the second gray scale voltage to a data signal line of the in-cell touch screen.
  • the preset condition includes: the preset touch time, the frequency of the touch operation detected by the in-cell touch screen is between a first frequency threshold and a second frequency threshold, wherein The first frequency threshold is less than the second frequency threshold.
  • the driving method further includes:
  • the display time of each frame is determined according to the first gamma value. a first gray scale voltage, and inputting the first gray scale voltage to a data signal line of the in-cell touch panel.
  • the driving method further includes:
  • the display time of each frame is determined according to the second gamma value. a second gray scale voltage, and inputting the second gray scale voltage to a data signal line of the in-cell touch panel.
  • the driving method further includes: pre-storing a first gray scale voltage-transmittance curve and a second gray scale voltage-transmittance curve;
  • Determining, according to the first gamma value, a first gray scale voltage specifically: determining a first transmittance according to a gamma curve corresponding to the first gamma value, according to the first transmittance and the first a gray scale voltage-transmittance curve determines a first gray scale voltage;
  • Determining, according to the second gamma value, a second gray scale voltage specifically: determining a second transmittance according to a Gamma curve corresponding to the second gamma value, according to the second transmittance and the The second gray scale voltage-transmittance curve determines the second gray scale voltage.
  • a second aspect of the embodiments of the present invention provides a driving device, which is applied to an in-cell touch panel, and the driving device includes:
  • a setting unit configured to set a first gamma value and a second gamma value for the in-cell touch screen, wherein the first gamma value is greater than the second gamma value;
  • a dividing unit configured to divide a display time of each frame of the screen into a display time period and a touch time period
  • a determining unit configured to: if the touch operation detected by the in-cell touch screen meets a preset condition, then:
  • determining a second gray scale voltage according to the second gamma value determining a second gray scale voltage according to the second gamma value, and inputting the second gray scale voltage to a data signal line of the in-cell touch screen.
  • the preset condition includes: the preset touch time, the frequency of the touch operation detected by the in-cell touch screen is between a first frequency threshold and a second frequency threshold, wherein The first frequency threshold is less than the second frequency threshold.
  • the determining unit is further configured to:
  • the display time of each frame is determined according to the first gamma value. a first gray scale voltage, and inputting the first gray scale voltage to a data signal line of the in-cell touch panel.
  • the determining unit is further configured to:
  • the display time of each frame is determined according to the second gamma value. a second gray scale voltage, and inputting the second gray scale voltage to a data signal line of the in-cell touch panel.
  • the driving device further includes:
  • a storage unit configured to pre-store a first gray scale voltage-transmittance curve and a second gray scale voltage-transmittance curve
  • the determining unit is specifically configured to: determine a first transmittance according to a Gamma curve corresponding to the first gamma value, and determine a first according to the first transmittance and the first grayscale voltage-transmittance curve a gray scale voltage; or, determining a second transmittance according to a Gamma curve corresponding to the second Gamma value, determining a second according to the second transmittance and the second gray scale voltage-transmittance curve Gray Order voltage.
  • a third aspect of the embodiments of the present invention provides an in-cell touch panel, which may include a liquid crystal panel and a driving device as described in any of the possible embodiments of the second aspect or the second aspect of the present invention.
  • the embodiment of the present invention may set a first gamma value and a second gamma value for the in-cell touch screen, wherein the first gamma value is greater than the second gamma value; and the display time of each frame is divided into a display time period and a touch time period. If the touch operation detected by the in-cell touch panel meets the preset condition, the first gray scale voltage is determined according to the first gamma value during the display period, and the first gray is input to the data signal line of the in-cell touch screen. Step voltage; during the touch time period, the second gray scale voltage is determined according to the second gamma value, and the second gray scale voltage is input to the data signal line of the in-cell touch screen.
  • the transmittance of the embedded touch screen in the touch time period is higher than the transmittance in the display time period by the preset two sets of gamma values, so as to compensate for the leakage current in the touch time period.
  • the resulting brightness loss increases the display brightness uniformity and visual experience of the in-cell touch screen.
  • FIG. 1 is a schematic flow chart of an embodiment of a driving method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of sub-area division of an effective display area in a driving method according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram showing a relationship between a Gamma curve corresponding to a first gamma value and a second gamma value, respectively, in an embodiment of the present invention
  • FIG. 4 is a schematic diagram showing a relationship between a first gray scale voltage-transmittance curve and a second gray scale voltage-transmittance curve in the embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an embodiment of a driving apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of another embodiment of a driving apparatus according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of an embodiment of an in-cell touch panel according to an embodiment of the present invention.
  • Embodiments of the present invention provide a driving method, a driving device, and an in-cell touch panel, which can improve display brightness uniformity and visual experience of an in-cell touch panel.
  • the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
  • FIG. 1 is a schematic flowchart diagram of an embodiment of a driving method according to an embodiment of the present invention, wherein the driving method is applicable to an in-cell touch panel. As shown in FIG. 1, the driving method may include the following steps:
  • the liquid crystal display will set the gamma value before leaving the factory, and each gamma value corresponds to a gamma curve, and the gamma curve is used to indicate the nonlinear relationship between the gray level of the liquid crystal display and the transmittance.
  • the gray level is the same, the larger the gamma value, the lower the corresponding transmittance.
  • a liquid crystal display only needs to set a Gamma value.
  • at least two gamma values may be set, including a first gamma value and a second gamma value, and the first gamma value is greater than the second gamma value.
  • the relationship of the Gamma curve corresponding to the first gamma value and the second gamma value, respectively, can be referred to FIG.
  • the transmittance corresponding to the first gamma value is lower than the transmittance corresponding to the second gamma value.
  • the display time period is a time period during which the display scan is performed; and the touch time period is a time period during which the touch scan is performed. Separate the display scan and the touch scan in different time periods to avoid mutual interference between the two.
  • the display time of one frame may be divided into one or more groups of display time periods and touch time periods.
  • the display time of one frame may be divided into two groups of display time periods and touch time periods, including The display time period 1, the touch time period 1, the display time period 2, and the touch time period 2 are displayed.
  • the duration of the display time period may be greater than the duration of the touch time period.
  • step S103 Determine whether the touch operation detected by the in-cell touch panel meets a preset condition. If the determination result is yes, perform step S104 and step S105.
  • the preset condition may be that the frequency or the number of times of the touch operation is within a preset range; or the scene of the touch operation detected may be a preset application scenario.
  • the preset application scenario For example, game scenes, photo shooting scenes, text input scenes, and the like.
  • S104 Determine, at the display time period, a first grayscale voltage according to the first gamma value, and input the first grayscale voltage to a data signal line of the in-cell touchscreen.
  • the first gray scale voltage may be determined according to the first gamma value during the display period, and input to the data signal line of the embedded touch screen.
  • the first gray scale voltage is described.
  • a gate scan signal may be applied to the gate scan line of the in-cell touch panel for display scanning during the display period.
  • S105 Determine, during the touch time period, a second grayscale voltage according to the second gamma value, and input the second grayscale voltage to a data signal line of the inline touchscreen.
  • the second gray scale voltage may be determined according to the second gamma value during the touch time period, and input to the data signal line of the embedded touch screen.
  • the second gray scale voltage may be applied to the touch scan line of the in-cell touch screen to perform touch scan.
  • the transmittance of the liquid crystal molecules in the in-cell touch panel is controlled by the gray scale voltage, and by controlling the magnitude of the gray scale voltage, the transmittance of the liquid crystal molecules can be transmitted corresponding to the Gamma value and the gray scale level. rate.
  • the transmittance corresponding to the second gamma value is higher than the transmittance corresponding to the first gamma value. That is, in the display time of the same frame picture, the transmittance of the touch time period is higher than the transmittance of the display time period, which can compensate for the brightness loss caused by the leakage current during the touch time period.
  • the driving method illustrated in FIG. 1 is applicable to an in-cell touch panel including setting a first gamma value and a second gamma value for the in-cell touch screen, wherein the first gamma value is greater than the second gamma value;
  • the display time is divided into a display time period and a touch time period; if the touch operation detected by the in-cell touch screen satisfies a preset condition, the first gray level voltage is determined according to the first gamma value during the display time period, and
  • the data signal line of the in-cell touch screen inputs a first gray scale voltage; during the touch time period, the second gray scale voltage is determined according to the second Gamma value, and the second gray scale voltage is input to the data signal line of the in-cell touch screen.
  • the embedded two sets of gamma values are embedded.
  • the transmittance of the touch screen in the touch time period is higher than the transmittance in the display time period to compensate for the brightness loss caused by the leakage current during the touch time period, thereby improving the display brightness uniformity of the in-cell touch screen and Visual experience.
  • FIG. 2 is a schematic flowchart diagram of an embodiment of a driving method according to an embodiment of the present invention, wherein the driving method is applicable to an in-cell touch panel. As shown in FIG. 2, the driving method may include the following steps:
  • step S101 in the embodiment shown in FIG. 1 , and details are not described herein again.
  • the Gamma curve corresponding to the Gamma value is a relationship between the gray level of the liquid crystal display and the transmittance.
  • the required transmittance can be determined according to the gray level and the gamma curve. In the specific implementation, the required transmittance needs to be obtained by applying a suitable gray scale voltage on the data signal line.
  • a liquid crystal display only needs to set a gamma value, and only the gray scale voltage-transmittance curve corresponding to the gamma value is stored in advance to determine the correct gray scale voltage.
  • two gray scale voltage-transmittance curves may be pre-stored, including a first gray scale voltage-transmittance curve corresponding to the first gamma value and a second corresponding to the second gamma value. Gray scale voltage - transmission curve.
  • the relationship between the first gray scale voltage-transmittance curve and the second gray scale voltage-transmittance curve can be referred to FIG.
  • the transmittance corresponding to the first gray-scale voltage-transmittance curve is lower than the transmittance corresponding to the second gray-scale voltage-transmittance.
  • step S102 in the embodiment shown in FIG. 1 , and details are not described herein again.
  • step S204 Determine whether the frequency of the touch operation detected by the in-cell touch panel is less than the first frequency threshold within a preset time. If the determination result is yes, step S205 is performed; otherwise, step S207 is performed.
  • the frequency of the detected touch operation is less than the first frequency threshold within a preset time, the user is less likely to touch the embedded touch screen within a preset time.
  • the first frequency threshold of the preset time is preset.
  • the preset time may be a few frames or a dozen frames. Showing time; the above first frequency threshold may be based on
  • S205 Determine, according to a Gamma curve corresponding to the first gamma value, a first transmittance according to the first transmission rate and the first grayscale voltage.
  • the rate curve determines the first gray scale voltage.
  • the in-cell touch panel is mainly used for display within a preset time or for a period of time in the future, and the gray scale voltage can be maintained unchanged during the display time of the entire frame.
  • the first transmittance may be determined according to the Gamma curve corresponding to the first gamma value, according to the first transmittance and the first ash.
  • the step voltage-transmittance curve determines the first gray scale voltage.
  • the register After determining the first gray scale voltage, the register may be set according to the determined voltage value, and the driving device of the in-cell touch panel may output a corresponding first gray scale voltage according to the setting of the register, so that the transmittance of the in-cell touch panel reaches the first The first transmittance corresponding to a Gamma value.
  • step S207 Determine whether the frequency of the touch operation detected by the in-cell touch panel is greater than the second frequency threshold within a preset time. If the determination result is yes, step S208 is performed; otherwise, step S210 is performed.
  • the frequency of the detected touch operation is not less than the first frequency threshold within a preset time, it may be further determined whether the frequency is greater than the second frequency threshold, and if the result of the further determination is yes, indicating that the preset time is Users frequently perform touch operations on the in-cell touch screen. If the result of the further judgment is no, it is considered that the frequency of the user performing the touch operation on the in-cell touch panel is moderate in the preset time.
  • S208 Determine, according to a Gamma curve corresponding to the second gamma value, a second transmittance according to the second transmittance and the second grayscale voltage.
  • the rate curve determines the second gray scale voltage.
  • the gray scale voltage may be maintained during the display time of the entire frame.
  • the second transmission rate is determined according to the Gamma curve corresponding to the second gamma value, according to the second transmission rate and the second gray gradation
  • the voltage-transmittance curve determines the second gray scale voltage.
  • the second transmittance is relative to the first transmittance Higher to compensate for the loss of brightness of the in-line touch screen.
  • the register After determining the second gray scale voltage, the register may be set according to the determined voltage value, and the driving device of the in-cell touch panel may output a corresponding second gray scale voltage according to the setting of the register, so that the transmittance of the in-cell touch panel reaches the first The second transmittance corresponding to the second gamma value.
  • S210 Determine, in the display period, a first grayscale voltage according to the first gamma value, and input the first grayscale voltage to a data signal line of the embedded touchscreen.
  • the transmittance of the touch time period is higher than the transmittance of the display time period.
  • the specific implementation manner of determining the first gray scale voltage according to the first gamma value and inputting the first gray scale voltage to the data signal line of the in-cell touch panel may be the same as the specific implementation manner of steps S205-S206. .
  • the specific implementation manner of determining the second gray scale voltage according to the second gamma value and inputting the second gray scale voltage to the data signal line of the in-cell touch panel may be the same as the specific implementation manner of steps S208-S209 .
  • the driving method shown in FIG. 2 can be applied to an in-cell touch panel including setting a first gamma value, a second gamma value, a first grayscale voltage-transmittance curve, and a second grayscale voltage for the in-cell touch panel- Transmittance curve; the display time of each frame is divided into a display time period and a touch time period; according to the frequency of the touch operation detected by the in-cell touch screen, the corresponding time is used in the display time period and the touch time period
  • the Gamma value and the gray scale voltage-transmittance curve determine the gray scale voltage, which in turn controls the transmittance of the in-cell touch screen.
  • the transmittance of the embedded touch screen in the touch time period is higher than the transmittance in the display time period by the preset two sets of gamma values, so as to compensate for the leakage current in the touch time period.
  • the resulting brightness loss increases the display brightness uniformity and visual experience of the in-cell touch screen.
  • FIG. 5 is a schematic structural diagram of an embodiment of a driving apparatus according to an embodiment of the present invention.
  • the driving apparatus may include a setting unit 501, a dividing unit 502, and a determining unit 503, where:
  • the setting unit 501 is configured to set a first gamma value and a second gamma value for the in-cell touch screen, wherein the first gamma value is greater than the second gamma value.
  • the liquid crystal display will set the gamma value before leaving the factory, and each gamma value corresponds to a gamma curve, and the gamma curve is used to indicate the nonlinear relationship between the gray level of the liquid crystal display and the transmittance.
  • the gray level is the same, the larger the gamma value, the lower the corresponding transmittance.
  • a liquid crystal display only needs to set a Gamma value.
  • at least two gamma values may be set, including a first gamma value and a second gamma value, and the first gamma value is greater than the second gamma value.
  • the relationship of the Gamma curve corresponding to the first gamma value and the second gamma value, respectively, can be referred to FIG.
  • the transmittance corresponding to the first gamma value is lower than the transmittance corresponding to the second gamma value.
  • the dividing unit 502 is configured to divide the display time of each frame of the screen into a display time period and a touch time period.
  • the display time period is a time period during which the display scan is performed; and the touch time period is a time period during which the touch scan is performed. Separate the display scan and the touch scan in different time periods to avoid mutual interference between the two.
  • the display time of one frame may be divided into one or more groups of display time periods and touch time periods.
  • the display time of one frame may be divided into two groups of display time periods and touch time periods, including The display time period 1, the touch time period 1, the display time period 2, and the touch time period 2 are displayed.
  • the duration of the display time period may be greater than the duration of the touch time period.
  • a determining unit 503 configured to determine, according to the first gamma value, a first grayscale voltage, and if the touch operation detected by the in-cell touch panel meets a preset condition, The data signal line of the in-cell touch screen is input to the first gray scale voltage; during the touch time period, determining a second gray scale voltage according to the second Gamma value, and to the in-cell touch screen The data signal line is input to the second gray scale voltage.
  • the preset condition may be that the frequency or the number of times of the touch operation is within a preset range; or the scene of the touch operation detected may be a preset application scenario.
  • the preset application scenario For example, game scenes, photo shooting scenes, text input scenes, and the like.
  • the first gray scale voltage may be determined according to the first gamma value during the display period, and input to the data signal line of the embedded touch screen.
  • the first gray scale voltage is described.
  • the in-cell touch screen can also be A gate scan signal is applied to the gate scan line for display scanning.
  • the second gray scale voltage may be determined according to the second gamma value during the touch time period, and the second gray scale voltage may be input to the data signal line of the in-cell touch screen.
  • a touch scan signal may be applied to the touch scan line of the in-cell touch screen to perform touch scan.
  • the transmittance of the liquid crystal molecules in the in-cell touch panel is controlled by the gray scale voltage, and by controlling the magnitude of the gray scale voltage, the transmittance of the liquid crystal molecules can be transmitted corresponding to the Gamma value and the gray scale level. rate.
  • the transmittance corresponding to the second gamma value is higher than the transmittance corresponding to the first gamma value. That is, in the display time of the same frame picture, the transmittance of the touch time period is higher than the transmittance of the display time period, which can compensate for the brightness loss caused by the leakage current during the touch time period.
  • the driving device shown in FIG. 5 can be applied to an in-cell touch panel, which can set a first gamma value and a second gamma value for the in-cell touch screen, wherein the first gamma value is greater than the second gamma value;
  • the display time is divided into a display time period and a touch time period; if the touch operation detected by the in-cell touch screen satisfies a preset condition, the first gray level voltage is determined according to the first gamma value during the display time period, and
  • the data signal line of the in-cell touch screen inputs a first gray scale voltage; during the touch time period, the second gray scale voltage is determined according to the second Gamma value, and the second gray scale voltage is input to the data signal line of the in-cell touch screen.
  • the transmittance of the embedded touch screen in the touch time period is higher than the transmittance in the display time period by the preset two sets of gamma values, so as to compensate for the leakage current in the touch time period.
  • the resulting brightness loss increases the display brightness uniformity and visual experience of the in-cell touch screen.
  • FIG. 6 is a schematic structural diagram of an embodiment of a driving apparatus according to an embodiment of the present invention.
  • the driving apparatus may include a setting unit 601, a storage unit 602, a dividing unit 603, and a determining unit 604. :
  • the setting unit 601 is configured to set a first gamma value and a second gamma value for the in-cell touch screen, wherein the first gamma value is greater than the second gamma value.
  • the storage unit 602 is configured to pre-store the first gray scale voltage-transmittance curve and the second gray scale voltage-transmittance curve.
  • the Gamma curve corresponding to the Gamma value is the gray level and transmittance of the liquid crystal display.
  • the required transmittance can be determined according to the gray level and the gamma curve.
  • the required transmittance needs to be obtained by applying a suitable gray scale voltage on the data signal line.
  • a liquid crystal display only needs to set a gamma value, and only the gray scale voltage-transmittance curve corresponding to the gamma value is stored in advance to determine the correct gray scale voltage.
  • two gray scale voltage-transmittance curves may be pre-stored, including a first gray scale voltage-transmittance curve corresponding to the first gamma value and a second corresponding to the second gamma value. Gray scale voltage - transmission curve.
  • the relationship between the first gray scale voltage-transmittance curve and the second gray scale voltage-transmittance curve can be referred to FIG.
  • the transmittance corresponding to the first gray-scale voltage-transmittance curve is lower than the transmittance corresponding to the second gray-scale voltage-transmittance.
  • the dividing unit 603 is configured to divide the display time of each frame of the screen into a display time period and a touch time period.
  • a determining unit 604 configured to: if the touch operation detected by the in-cell touch panel meets a preset condition, determine, according to the first gamma value, a first grayscale voltage in the display time period, and The data signal line of the in-cell touch screen is input to the first gray scale voltage; during the touch time period, determining a second gray scale voltage according to the second Gamma value, and to the in-cell touch screen The data signal line is input to the second gray scale voltage.
  • the preset condition may be that the frequency of the touch operation detected above is between the first frequency threshold and the second frequency threshold.
  • the first transmittance may be determined according to the Gamma curve corresponding to the first gamma value, and determined according to the first transmittance and the first grayscale voltage-transmittance curve.
  • the first gray scale voltage After determining the first gray scale voltage, the register may be set according to the determined voltage value, and the driving device of the in-cell touch panel may output a corresponding first gray scale voltage according to the setting of the register, so that the transmittance of the in-cell touch panel reaches the first The first transmittance corresponding to a Gamma value.
  • the second transmittance may be determined according to the Gamma curve corresponding to the second gamma value, and the second transmittance is determined according to the second transmittance and the second gray scale voltage-transmittance curve.
  • Gray scale voltage After determining the second gray scale voltage, the register may be set according to the determined voltage value, and the driving device of the in-cell touch panel may output a corresponding second gray scale voltage according to the setting of the register, so that the transmittance of the in-cell touch panel reaches the first The second pass corresponding to the second gamma value Over rate.
  • the determining unit 604 is further configured to:
  • the display time of each frame is determined according to the first gamma value. a first gray scale voltage, and inputting the first gray scale voltage to a data signal line of the in-cell touch panel.
  • the gray scale may be The voltage remains constant for the display time of the entire frame. Specifically, since the time for the brightness loss caused by the leakage current mainly during display is short, the first gray scale voltage may be determined according to the first gamma value and the first gray scale voltage-transmittance curve, and the in-line touch screen is The data signal line is input to the first gray scale voltage such that the transmittance of the in-cell touch panel is a relatively low first transmittance.
  • the determining unit 604 is further configured to:
  • the display time of each frame is determined according to the second gamma value. a second gray scale voltage, and inputting the second gray scale voltage to a data signal line of the in-cell touch panel.
  • the gray scale voltage may be maintained during the display time of the entire frame.
  • the second gray scale voltage is determined according to the second gamma value and the second gray scale voltage-transmittance curve
  • the second gray scale voltage is determined according to the second gamma value and the second gray scale voltage-transmittance curve
  • the second gray scale voltage is determined according to the second gamma value and the second gray scale voltage-transmittance curve
  • the second gray scale voltage is determined according to the second gamma value and the second gray scale voltage-transmittance curve.
  • the data signal line is input to the second gray scale voltage such that the transmittance of the in-cell touch panel is a relatively high first transmittance.
  • the driving device shown in FIG. 6 can be applied to an in-cell touch panel, and can set a first gamma value, a second gamma value, a first gray-scale voltage-transmittance curve, and a second gray-scale voltage for the in-cell touch panel.
  • the value and the grayscale voltage-transmittance curve determine the grayscale voltage to control the transmittance of the inline touchscreen.
  • the transmittance of the embedded touch screen in the touch time period is higher than the transmittance in the display time period by the preset two sets of gamma values, so as to compensate for the leakage current in the touch time period.
  • the resulting brightness loss increases the display brightness uniformity and visual experience of the in-cell touch screen.
  • FIG. 7 is a schematic structural diagram of an embodiment of an in-cell touch panel according to an embodiment of the present invention.
  • the driving device may include a liquid crystal panel 701 and a driving device 702, wherein the driving device 702 may be as The drive device depicted in Figure 5 or Figure 6.
  • the embodiment of the present invention can make the transmittance of the embedded touch screen in the touch time period higher than the display time period by using two preset gamma values.
  • the transmittance is used to compensate for the loss of brightness due to leakage current during the touch time period, thereby improving the display brightness uniformity and visual experience of the in-cell touch panel.
  • the modules or units in all the embodiments of the present invention may be implemented by a general-purpose integrated circuit, such as a CPU (Central Processing Unit) or an ASIC (Application Specific Integrated Circuit).
  • a CPU Central Processing Unit
  • ASIC Application Specific Integrated Circuit
  • the units in the apparatus of the embodiment of the present invention may be combined, divided, and deleted according to actual needs.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

一种驱动方法、驱动装置及内嵌式触摸屏，其中驱动方法可包括：为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma值大于第二Gamma值(S101)；将每一帧画面的显示时间划分为显示时间段和触控时间段(S102)；若所述内嵌式触摸屏检测到的触控操作满足预设的条件，则：在所述显示时间段，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压(S104)；在所述触控时间段，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压(S105)。其可弥补触控时间段由于漏电流造成的亮度损失，从而提高内嵌式触摸屏的显示亮度均匀性和视觉体验。

Description

一种驱动方法、驱动装置及内嵌式触摸屏
本发明要求2016年5月26日递交的发明名称为“一种驱动方法、驱动装置及内嵌式触摸屏”的申请号为201610362191.5的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及显示技术领域，尤其涉及一种驱动方法、驱动装置及内嵌式触摸屏。
背景技术
随着显示技术的飞速发展，触摸屏在各种终端中得到广泛的应用。其中Full In-Cell触摸屏是一种将触控电极完全集成到液晶盒内的内嵌式触摸屏，具有轻薄、成本低的优点。但是若Full In-Cell触摸屏的触控扫描和显示扫描同时进行，显示功能和触控功能之间容易互相干扰。为了解决这一问题，现有技术一般采用分时驱动的方法，将单位时间分成显示时间段和触控时间段，分别进行显示扫描和触控扫描。
在进行触控扫描的触控时间段，像素点的薄膜晶体管(Thin Film Transistor，TFT)应当关闭，靠液晶的电容效应维持画面的显示。但实际上由于制程问题，像素点中存在漏电流，当漏电流达到一定程度时，可开启像素点TFT，形成从液晶电容到TFT源极的漏电途径。漏电将造成像素点的亮度损失，使得在显示同一帧画面时，显示时间段和触控时间段的亮度不一致，从而降低显示质量和视觉体验。
发明内容
本发明实施例提供一种驱动方法、驱动装置及内嵌式触摸屏，可提高内嵌式触摸屏的显示亮度均匀性和视觉体验。
本发明实施例第一方面提供一种驱动方法，应用于内嵌式触摸屏，所述驱动方法包括：
为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma 值大于第二Gamma值；
将每一帧画面的显示时间划分为显示时间段和触控时间段；
若所述内嵌式触摸屏检测到的触控操作满足预设的条件，则：
在所述显示时间段，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压；
在所述触控时间段，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
作为一种可行的实施方式，所述预设的条件包括：在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率在第一频率阈值和第二频率阈值之间，其中所述第一频率阈值小于所述第二频率阈值。
作为一种可行的实施方式，所述驱动方法还包括：
若在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率小于所述第一频率阈值，则在所述每一帧画面的显示时间内，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压。
作为一种可行的实施方式，所述驱动方法还包括：
若在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率大于所述第二频率阈值，则在所述每一帧画面的显示时间内，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
作为一种可行的实施方式，所述驱动方法还包括：预先存储第一灰阶电压-透过率曲线和第二灰阶电压-透过率曲线；
所述根据所述第一Gamma值确定第一灰阶电压，具体为：根据所述第一Gamma值所对应的Gamma曲线确定第一透过率，根据所述第一透过率和所述第一灰阶电压-透过率曲线确定第一灰阶电压；
所述根据所述第二Gamma值确定第二灰阶电压，具体为：根据所述第二Gamma值所对应的Gamma曲线确定第二透过率，根据所述第二透过率和所述第二灰阶电压-透过率曲线确定第二灰阶电压。
本发明实施例第二方面提供了一种驱动装置，应用于内嵌式触摸屏，所述驱动装置包括：
设置单元，用于为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma值大于第二Gamma值；
划分单元，用于将每一帧画面的显示时间划分为显示时间段和触控时间段；
确定单元，用于若所述内嵌式触摸屏检测到的触控操作满足预设的条件，则：
在所述显示时间段，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压；
在所述触控时间段，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
作为一种可行的实施方式，所述预设的条件包括：在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率在第一频率阈值和第二频率阈值之间，其中所述第一频率阈值小于所述第二频率阈值。
作为一种可行的实施方式，所述确定单元还用于：
若在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率小于所述第一频率阈值，则在所述每一帧画面的显示时间内，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压。
作为一种可行的实施方式，所述确定单元还用于：
若在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率大于所述第二频率阈值，则在所述每一帧画面的显示时间内，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
作为一种可行的实施方式，所述驱动装置还包括：
存储单元，用于预先存储第一灰阶电压-透过率曲线和第二灰阶电压-透过率曲线；
所述确定单元具体用于：根据所述第一Gamma值所对应的Gamma曲线确定第一透过率，根据所述第一透过率和所述第一灰阶电压-透过率曲线确定第一灰阶电压；或者，根据所述第二Gamma值所对应的Gamma曲线确定第二透过率，根据所述第二透过率和所述第二灰阶电压-透过率曲线确定第二灰 阶电压。
本发明实施例第三方面提供了一种内嵌式触摸屏，可包括液晶面板和如本发明第二方面或第二方面的任一种可行的实施方式中所述的驱动装置。
本发明实施例可为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma值大于第二Gamma值；将每一帧画面的显示时间划分为显示时间段和触控时间段；若内嵌式触摸屏检测到的触控操作满足预设的条件，则在显示时间段，根据第一Gamma值确定第一灰阶电压，并向内嵌式触摸屏的数据信号线输入第一灰阶电压；在触控时间段，根据第二Gamma值确定第二灰阶电压，并向内嵌式触摸屏的数据信号线输入第二灰阶电压。采用本发明实施例，通过预设的两组Gamma值使内嵌式触控屏在触控时间段的透过率高于在显示时间段的透过率，以弥补触控时间段由于漏电流造成的亮度损失，从而提高内嵌式触摸屏的显示亮度均匀性和视觉体验。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述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性的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的驱动方法的一实施例的流程示意图；
图2是本发明实施例提供的驱动方法中有效显示区域的子区域划分示意图；
图3是本发明实施例中第一Gamma值和第二Gamma值分别对应的Gamma曲线之间的关系示意图；
图4是本发明实施例中第一灰阶电压-透过率曲线和第二灰阶电压-透过率曲线之间的关系示意图；
图5是本发明实施例提供的驱动装置的一实施例的结构示意图；
图6是本发明实施例提供的驱动装置的另一实施例的结构示意图；
图7是本发明实施例提供的内嵌式触摸屏的一实施例的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供一种驱动方法、驱动装置及内嵌式触摸屏，可提高内嵌式触摸屏的显示亮度均匀性和视觉体验，下面将结合附图对本发明的实施例进行详细说明。
参见图1，为本发明实施例提供的驱动方法的一实施例的流程示意图，其中所述驱动方法可应用于内嵌式触摸屏。如图1所示，所述驱动方法可包括如下步骤：
S101，为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma值大于第二Gamma值。
具体实现中，液晶显示器在出厂前将设置Gamma值，每个Gamma值对应一条Gamma曲线，Gamma曲线用于表示液晶显示器的灰阶级别与透过率之间的非线性关系。其中，在灰阶级别相同的情况下，Gamma值越大，所对应的透过率则越低。
在现有技术中，一个液晶显示器只需设置一个Gamma值。而在本发明实施例中，可设置至少两种Gamma值，其中包括第一Gamma值和第二Gamma值，第一Gamma值大于第二Gamma值。
作为示例，第一Gamma值和第二Gamma值分别对应的Gamma曲线的关系可参考图3。如图3所示，在灰阶级别相同的情况下，第一Gamma值所对应的透过率低于第二Gamma值所对应的透过率。
S102，将每一帧画面的显示时间划分为显示时间段和触控时间段。
具体实施中，在一帧画面的显示时间中，显示时间段为进行显示扫描的时间段；触控时间段为进行触控扫描的时间段。将显示扫描和触控扫描分开在不同的时间段进行，可避免两者之间互相干扰。
可选地，一帧画面的显示时间可划分为一组或多组显示时间段和触控时间段，例如，一帧画面的显示时间可划分为2组显示时间段和触控时间段，包括显示时间段1、触控时间段1、显示时间段2、触控时间段2。优选地，显示时间段的时长可大于触控时间段的时长。
S103，判断所述内嵌式触摸屏检测到的触控操作是否满足预设的条件，若判断结果为是，执行步骤S104和步骤S105。
可选地，满足预设的条件可以是指上述检测到的触控操作的频率或次数在预设的范围内；或者，可以是指上述检测到的触控操作的场景为预设的应用场景，例如游戏场景、照片拍摄场景、文字输入场景等。
S104，在所述显示时间段，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压。
当上述内嵌式触摸屏检测到的触控操作满足预设的条件时，可在显示时间段根据第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压。此外，在显示时间段，还可向上述内嵌式触摸屏的栅极扫描线施加栅极扫描信号以进行显示扫描。
S105，在所述触控时间段，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
当上述内嵌式触摸屏检测到的触控操作满足预设的条件时，可在触控时间段根据第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。此外，在触控时间段，还可向上述内嵌式触摸屏的触控扫描线施加触控扫描信号以进行触控扫描。
具体实施中，内嵌式触摸屏中液晶分子的透过率由灰阶电压控制，通过控制灰阶电压的大小，可使液晶分子的透过率达到与Gamma值和灰阶级别相对应的透过率。在本发明实施例中，由于第一Gamma值大于第二Gamma值，当灰阶级别相同时，第二Gamma值所对应的透过率高于第一Gamma值所对应的透过率。亦即，在同一帧画面的显示时间中，触控时间段的透过率高于显示时间段的透过率，可弥补触控时间段由于漏电流造成的亮度损失。
图1所示的驱动方法可应用于内嵌式触摸屏，其包括为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma值大于第二Gamma值；将每一帧画面的显示时间划分为显示时间段和触控时间段；若内嵌式触摸屏检测到的触控操作满足预设的条件，则在显示时间段，根据第一Gamma值确定第一灰阶电压，并向内嵌式触摸屏的数据信号线输入第一灰阶电压；在触控时间段，根据第二Gamma值确定第二灰阶电压，并向内嵌式触摸屏的数据信号线输入第二灰阶电压。采用本发明实施例，通过预设的两组Gamma值使内嵌 式触控屏在触控时间段的透过率高于在显示时间段的透过率，以弥补触控时间段由于漏电流造成的亮度损失，从而提高内嵌式触摸屏的显示亮度均匀性和视觉体验。
参见图2，为本发明实施例提供的驱动方法的一实施例的流程示意图，其中所述驱动方法可应用于内嵌式触摸屏。如图2所示，所述驱动方法可包括如下步骤：
S201，为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma值大于第二Gamma值。
具体地，步骤S201的具体实施方式可参考图1所示实施例中步骤S101的相关描述，此处不再赘述。
S202，预先存储第一灰阶电压-透过率曲线和第二灰阶电压-透过率曲线。
其中，Gamma值对应的Gamma曲线为液晶显示器的灰阶级别与透过率之间的关系曲线。根据灰阶级别和Gamma曲线可确定所需的透过率，而具体实现中，该所需的透过率需要在数据信号线上施加合适的灰阶电压得到。在现有技术中，一个液晶显示器只需设置一个Gamma值，则只需预先存储与该Gamma值向对应的灰阶电压-透过率曲线即可确定正确的灰阶电压。
在本发明实施例中，可预先存储两条灰阶电压-透过率曲线，其中包括对应于第一Gamma值的第一灰阶电压-透过率曲线和对应于第二Gamma值的第二灰阶电压-透过率曲线。
作为示例，第一灰阶电压-透过率曲线和第二灰阶电压-透过率曲线之间的关系可参考图4。如图4所示，在驱动电压相同的情况下，第一灰阶电压-透过率曲线所对应的透过率低于第二灰阶电压-透过率所对应的透过率。
S203，将每一帧画面的显示时间划分为显示时间段和触控时间段。
具体地，步骤S203的具体实施方式可参考图1所示实施例中步骤S102的相关描述，此处不再赘述。
S204，判断在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率是否小于第一频率阈值，若判断结果为是，执行步骤S205，否则执行步骤S207。
具体地，若在预设时间内，检测到的触控操作的频率小于第一频率阈值，表示在预设时间内用户较少对内嵌式触摸屏进行触控。其中，上述预设时间第一频率阈值为预先设置的，例如，上述预设时间可以是几帧或十几帧画面的显 示时间；上述第一频率阈值则可根据
在一些可行的实现方式中，也可判断内嵌式触摸屏当前的显示状态是否为视频播放或全屏播放状态，若是，表示在将来的一段时间内用户将较少对内嵌式触摸屏进行触控。
S205，在每一帧画面的显示时间内，根据所述第一Gamma值所对应的Gamma曲线确定第一透过率，根据所述第一透过率和所述第一灰阶电压-透过率曲线确定第一灰阶电压。
若上述判断结果为是，表示上述内嵌式触摸屏在预设时间内或将来的一段时间内主要用于显示，则可使灰阶电压在整帧画面的显示时间内维持不变。具体地，由于主要用于显示时漏电导致亮度损失的时间较短，可根据第一Gamma值所对应的Gamma曲线确定第一透过率，根据所述第一透过率和所述第一灰阶电压-透过率曲线确定第一灰阶电压。
S206，向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压。
确定第一灰阶电压之后，可根据确定的电压值设置寄存器，内嵌式触摸屏的驱动装置可根据寄存器的设置输出对应的第一灰阶电压，以使内嵌式触摸屏的透过率达到第一Gamma值所对应的第一透过率。
S207，判断在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率是否大于第二频率阈值，若判断结果为是，执行步骤S208，否则执行步骤S210。
其中，若在预设时间内，检测到的触控操作的频率不小于第一频率阈值，可进一步判断该频率是否大于第二频率阈值，若进一步判断的结果为是，表示在预设时间内用户频繁对内嵌式触摸屏进行触控操作。若进一步判断的结果为否，则认为在预设时间内用户对内嵌式触摸屏进行触控操作的频率适中。
S208，在每一帧画面的显示时间内，根据所述第二Gamma值所对应的Gamma曲线确定第二透过率，根据所述第二透过率和所述第二灰阶电压-透过率曲线确定第二灰阶电压。
若上述检测到的触控操作的频率大于第二频率阈值，即用户频繁对上述内嵌式触摸屏进行触控，此时可使灰阶电压在整帧画面的显示时间内维持不变。具体地，由于频繁触控时漏电导致亮度损失的时间较长，可根据第二Gamma值所对应的Gamma曲线确定第二透过率，根据所述第二透过率和所述第二灰阶电压-透过率曲线确定第二灰阶电压。其中第二透过率相对第一透过率来说 较高，可补偿内嵌式触摸屏的亮度损失。
S209，向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
确定第二灰阶电压之后，可根据确定的电压值设置寄存器，内嵌式触摸屏的驱动装置可根据寄存器的设置输出对应的第二灰阶电压，以使内嵌式触摸屏的透过率达到第二Gamma值所对应的第二透过率。
S210，在所述显示时间段，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压。
若上述检测到的触控操作的频率在第一频率阈值和第二频率阈值之间，可使触控时间段的透过率高于显示时间段的透过率。
具体地，根据第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压的具体实施方式可以与步骤S205-S206的具体实施方式相同。
S211，在所述触控时间段，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
具体地，根据第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压的具体实施方式可以与步骤S208-S209的具体实施方式相同。
图2所示的驱动方法可应用于内嵌式触摸屏，其包括为内嵌式触摸屏设置第一Gamma值、第二Gamma值、第一灰阶电压-透过率曲线和第二灰阶电压-透过率曲线；将每一帧画面的显示时间划分为显示时间段和触控时间段；根据内嵌式触摸屏检测到的触控操作的频率，在显示时间段和触控时间段采用相应的Gamma值和灰阶电压-透过率曲线来确定灰阶电压，进而控制内嵌式触摸屏的透过率。采用本发明实施例，通过预设的两组Gamma值使内嵌式触控屏在触控时间段的透过率高于在显示时间段的透过率，以弥补触控时间段由于漏电流造成的亮度损失，从而提高内嵌式触摸屏的显示亮度均匀性和视觉体验。
参见图5，为本发明实施例提供的驱动装置的一实施例的结构示意图，如图5所示，所述驱动装置可包括设置单元501、划分单元502以及确定单元503，其中：
设置单元501，用于为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma值大于第二Gamma值。
具体实现中，液晶显示器在出厂前将设置Gamma值，每个Gamma值对应一条Gamma曲线，Gamma曲线用于表示液晶显示器的灰阶级别与透过率之间的非线性关系。其中，在灰阶级别相同的情况下，Gamma值越大，所对应的透过率则越低。
在现有技术中，一个液晶显示器只需设置一个Gamma值。而在本发明实施例中，可设置至少两种Gamma值，其中包括第一Gamma值和第二Gamma值，第一Gamma值大于第二Gamma值。
作为示例，第一Gamma值和第二Gamma值分别对应的Gamma曲线的关系可参考图3。如图3所示，在灰阶级别相同的情况下，第一Gamma值所对应的透过率低于第二Gamma值所对应的透过率。
划分单元502，用于将每一帧画面的显示时间划分为显示时间段和触控时间段。
具体实施中，在一帧画面的显示时间中，显示时间段为进行显示扫描的时间段；触控时间段为进行触控扫描的时间段。将显示扫描和触控扫描分开在不同的时间段进行，可避免两者之间互相干扰。
可选地，一帧画面的显示时间可划分为一组或多组显示时间段和触控时间段，例如，一帧画面的显示时间可划分为2组显示时间段和触控时间段，包括显示时间段1、触控时间段1、显示时间段2、触控时间段2。优选地，显示时间段的时长可大于触控时间段的时长。
确定单元503，用于若所述内嵌式触摸屏检测到的触控操作满足预设的条件，则：在所述显示时间段，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压；在所述触控时间段，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
可选地，满足预设的条件可以是指上述检测到的触控操作的频率或次数在预设的范围内；或者，可以是指上述检测到的触控操作的场景为预设的应用场景，例如游戏场景、照片拍摄场景、文字输入场景等。
当上述内嵌式触摸屏检测到的触控操作满足预设的条件时，可在显示时间段根据第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压。此外，在显示时间段，还可向上述内嵌式触摸屏的 栅极扫描线施加栅极扫描信号以进行显示扫描。可在触控时间段根据第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。此外，在触控时间段，还可向上述内嵌式触摸屏的触控扫描线施加触控扫描信号以进行触控扫描。
具体实施中，内嵌式触摸屏中液晶分子的透过率由灰阶电压控制，通过控制灰阶电压的大小，可使液晶分子的透过率达到与Gamma值和灰阶级别相对应的透过率。在本发明实施例中，由于第一Gamma值大于第二Gamma值，当灰阶级别相同时，第二Gamma值所对应的透过率高于第一Gamma值所对应的透过率。亦即，在同一帧画面的显示时间中，触控时间段的透过率高于显示时间段的透过率，可弥补触控时间段由于漏电流造成的亮度损失。
图5所示的驱动装置可应用于内嵌式触摸屏，其可为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma值大于第二Gamma值；将每一帧画面的显示时间划分为显示时间段和触控时间段；若内嵌式触摸屏检测到的触控操作满足预设的条件，则在显示时间段，根据第一Gamma值确定第一灰阶电压，并向内嵌式触摸屏的数据信号线输入第一灰阶电压；在触控时间段，根据第二Gamma值确定第二灰阶电压，并向内嵌式触摸屏的数据信号线输入第二灰阶电压。采用本发明实施例，通过预设的两组Gamma值使内嵌式触控屏在触控时间段的透过率高于在显示时间段的透过率，以弥补触控时间段由于漏电流造成的亮度损失，从而提高内嵌式触摸屏的显示亮度均匀性和视觉体验。
参见图6，为本发明实施例提供的驱动装置的一实施例的结构示意图，如图6所示，所述驱动装置可包括设置单元601、存储单元602、划分单元603以及确定单元604，其中：
设置单元601，用于为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma值大于第二Gamma值。
具体地，设置单元601的具体实施方式可参考图5所示实施例中设置单元501的相关描述，此处不再赘述。
存储单元602，用于预先存储第一灰阶电压-透过率曲线和第二灰阶电压-透过率曲线。
其中，Gamma值对应的Gamma曲线为液晶显示器的灰阶级别与透过率之 间的关系曲线。根据灰阶级别和Gamma曲线可确定所需的透过率，而具体实现中，该所需的透过率需要在数据信号线上施加合适的灰阶电压得到。在现有技术中，一个液晶显示器只需设置一个Gamma值，则只需预先存储与该Gamma值向对应的灰阶电压-透过率曲线即可确定正确的灰阶电压。
在本发明实施例中，可预先存储两条灰阶电压-透过率曲线，其中包括对应于第一Gamma值的第一灰阶电压-透过率曲线和对应于第二Gamma值的第二灰阶电压-透过率曲线。
作为示例，第一灰阶电压-透过率曲线和第二灰阶电压-透过率曲线之间的关系可参考图4。如图4所示，在驱动电压相同的情况下，第一灰阶电压-透过率曲线所对应的透过率低于第二灰阶电压-透过率所对应的透过率。
划分单元603，用于将每一帧画面的显示时间划分为显示时间段和触控时间段。
具体地，划分单元603的具体实施方式可参考图5所示实施例中划分单元602的相关描述，此处不再赘述。
确定单元604，用于若所述内嵌式触摸屏检测到的触控操作满足预设的条件，则：在所述显示时间段，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压；在所述触控时间段，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
在一些可行的实施方式中，满足预设的条件可以是上述检测到的触控操作的频率在第一频率阈值和第二频率阈值之间。此时，在显示时间段，可根据所述第一Gamma值所对应的Gamma曲线确定第一透过率，根据所述第一透过率和所述第一灰阶电压-透过率曲线确定第一灰阶电压。确定第一灰阶电压之后，可根据确定的电压值设置寄存器，内嵌式触摸屏的驱动装置可根据寄存器的设置输出对应的第一灰阶电压，以使内嵌式触摸屏的透过率达到第一Gamma值所对应的第一透过率。在触控时间段，可根据所述第二Gamma值所对应的Gamma曲线确定第二透过率，根据所述第二透过率和所述第二灰阶电压-透过率曲线确定第二灰阶电压。确定第二灰阶电压之后，可根据确定的电压值设置寄存器，内嵌式触摸屏的驱动装置可根据寄存器的设置输出对应的第二灰阶电压，以使内嵌式触摸屏的透过率达到第二Gamma值所对应的第二透 过率。
在一些可行的实施方式中，所述确定单元604还可用于：
若在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率小于所述第一频率阈值，则在所述每一帧画面的显示时间内，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压。
其中，若在预设时间内，检测到的触控操作的频率小于第一频率阈值，表示上述内嵌式触摸屏在预设时间内或将来的一段时间内主要用于显示，则可使灰阶电压在整帧画面的显示时间内维持不变。具体地，由于主要用于显示时漏电导致亮度损失的时间较短，可根据第一Gamma值和第一灰阶电压-透过率曲线确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压，使内嵌式触摸屏的透过率为相对较低的第一透过率。
在一些可行的实施方式中，所述确定单元604还可用于：
若在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率大于所述第二频率阈值，则在所述每一帧画面的显示时间内，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
其中，若上述检测到的触控操作的频率大于第二频率阈值，即用户频繁对上述内嵌式触摸屏进行触控，此时可使灰阶电压在整帧画面的显示时间内维持不变。具体地，由于频繁触控时漏电导致亮度损失的时间较长，可根据第二Gamma值和第二灰阶电压-透过率曲线确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压，使内嵌式触摸屏的透过率为相对较高的第一透过率。
图6所示的驱动装置可应用于内嵌式触摸屏，可为内嵌式触摸屏设置第一Gamma值、第二Gamma值、第一灰阶电压-透过率曲线和第二灰阶电压-透过率曲线；将每一帧画面的显示时间划分为显示时间段和触控时间段；根据内嵌式触摸屏检测到的触控操作的频率，在显示时间段和触控时间段采用相应的Gamma值和灰阶电压-透过率曲线来确定灰阶电压，进而控制内嵌式触摸屏的透过率。采用本发明实施例，通过预设的两组Gamma值使内嵌式触控屏在触控时间段的透过率高于在显示时间段的透过率，以弥补触控时间段由于漏电流 造成的亮度损失，从而提高内嵌式触摸屏的显示亮度均匀性和视觉体验。
参见图7，为本发明实施例提供的内嵌式触摸屏的一实施例的结构示意图，如图7所示，所述驱动装置可包括液晶面板701和驱动装置702，其中驱动装置702可以为如图5或图6所描述的驱动装置。
根据图5或图6所示实施例的相关描述可知，本发明实施例可通过预设的两组Gamma值使内嵌式触控屏在触控时间段的透过率高于在显示时间段的透过率，以弥补触控时间段由于漏电流造成的亮度损失，从而提高内嵌式触摸屏的显示亮度均匀性和视觉体验。
本发明所有实施例中的模块或单元，可以通过通用集成电路，例如CPU(Central Processing Unit，中央处理器)，或通过ASIC(Application Specific Integrated Circuit，专用集成电路)来实现。
本发明实施例方法中的步骤可以根据实际需要进行顺序调整、合并和删减。
本发明实施例装置中的单元可以根据实际需要进行合并、划分和删减。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述每个方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (15)

  1. 一种驱动方法，应用于内嵌式触摸屏，其中，所述驱动方法包括：
    为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma值大于第二Gamma值；
    将每一帧画面的显示时间划分为显示时间段和触控时间段；
    若所述内嵌式触摸屏检测到的触控操作满足预设的条件，则：
    在所述显示时间段，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压；
    在所述触控时间段，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
  2. 根据权利要求1所述的驱动方法，其中，所述预设的条件包括：在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率在第一频率阈值和第二频率阈值之间，其中所述第一频率阈值小于所述第二频率阈值。
  3. 根据权利要求2所述的驱动方法，其中，所述驱动方法还包括：
    若在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率小于所述第一频率阈值，则在所述每一帧画面的显示时间内，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压。
  4. 根据权利要求2所述的驱动方法，其中，所述驱动方法还包括：
    若在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率大于所述第二频率阈值，则在所述每一帧画面的显示时间内，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
  5. 根据权利要求1所述的驱动方法，其中，所述驱动方法还包括：预先存储第一灰阶电压-透过率曲线和第二灰阶电压-透过率曲线；
    所述根据所述第一Gamma值确定第一灰阶电压，具体为：根据所述第一Gamma值所对应的Gamma曲线确定第一透过率，根据所述第一透过率和所述第一灰阶电压-透过率曲线确定第一灰阶电压；
    所述根据所述第二Gamma值确定第二灰阶电压，具体为：根据所述第二Gamma值所对应的Gamma曲线确定第二透过率，根据所述第二透过率和所述第二灰阶电压-透过率曲线确定第二灰阶电压。
  6. 一种驱动装置，应用于内嵌式触摸屏，其中，所述驱动装置包括：
    设置单元，用于为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma值大于第二Gamma值；
    划分单元，用于将每一帧画面的显示时间划分为显示时间段和触控时间段；
    确定单元，用于若所述内嵌式触摸屏检测到的触控操作满足预设的条件，则：
    在所述显示时间段，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压；
    在所述触控时间段，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
  7. 根据权利要求6所述的驱动装置，其中，所述预设的条件包括：在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率在第一频率阈值和第二频率阈值之间，其中所述第一频率阈值小于所述第二频率阈值。
  8. 根据权利要求7所述的驱动装置，其中，所述确定单元还用于：
    若在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率小于所述第一频率阈值，则在所述每一帧画面的显示时间内，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压。
  9. 根据权利要求7所述的驱动装置，其中，所述确定单元还用于：
    若在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率大于所述第二频率阈值，则在所述每一帧画面的显示时间内，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
  10. 根据权利要求6所述的驱动装置，其中，所述驱动装置还包括：
    存储单元，用于预先存储第一灰阶电压-透过率曲线和第二灰阶电压-透过率曲线；
    所述确定单元具体用于：根据所述第一Gamma值所对应的Gamma曲线确定第一透过率，根据所述第一透过率和所述第一灰阶电压-透过率曲线确定第一灰阶电压；或者，根据所述第二Gamma值所对应的Gamma曲线确定第二透过率，根据所述第二透过率和所述第二灰阶电压-透过率曲线确定第二灰阶电压。
  11. 一种内嵌式触摸屏，其中，所述内嵌式触摸屏包括液晶面板和驱动装置，所述驱动装置包括：
    设置单元，用于为内嵌式触摸屏设置第一Gamma值和第二Gamma值，其中第一Gamma值大于第二Gamma值；
    划分单元，用于将每一帧画面的显示时间划分为显示时间段和触控时间段；
    确定单元，用于若所述内嵌式触摸屏检测到的触控操作满足预设的条件，则：
    在所述显示时间段，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压；
    在所述触控时间段，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
  12. 根据权利要求11所述的内嵌式触摸屏，其中，所述预设的条件包括：在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率在第一频率阈值和第二频率阈值之间，其中所述第一频率阈值小于所述第二频率阈值。
  13. 根据权利要求12所述的内嵌式触摸屏，其中，所述确定单元还用于：
    若在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率小于所述第一频率阈值，则在所述每一帧画面的显示时间内，根据所述第一Gamma值确定第一灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第一灰阶电压。
  14. 根据权利要求12所述的内嵌式触摸屏，其中，所述确定单元还用于：
    若在预设时间内，所述内嵌式触摸屏检测到的触控操作的频率大于所述第二频率阈值，则在所述每一帧画面的显示时间内，根据所述第二Gamma值确定第二灰阶电压，并向所述内嵌式触摸屏的数据信号线输入所述第二灰阶电压。
  15. 根据权利要求11所述的内嵌式触摸屏，其中，所述驱动装置还包括：
    存储单元，用于预先存储第一灰阶电压-透过率曲线和第二灰阶电压-透过率曲线；
    所述确定单元具体用于：根据所述第一Gamma值所对应的Gamma曲线确定第一透过率，根据所述第一透过率和所述第一灰阶电压-透过率曲线确定第一灰阶电压；或者，根据所述第二Gamma值所对应的Gamma曲线确定第二透过率，根据所述第二透过率和所述第二灰阶电压-透过率曲线确定第二灰阶电压。
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