WO2017181538A1 - 互电容式In-cell显示装置及其驱动方法 - Google Patents

互电容式In-cell显示装置及其驱动方法 Download PDF

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Publication number
WO2017181538A1
WO2017181538A1 PCT/CN2016/089749 CN2016089749W WO2017181538A1 WO 2017181538 A1 WO2017181538 A1 WO 2017181538A1 CN 2016089749 W CN2016089749 W CN 2016089749W WO 2017181538 A1 WO2017181538 A1 WO 2017181538A1
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Prior art keywords
switching transistor
electrode
display device
touch
capacitance type
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Ceased
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PCT/CN2016/089749
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English (en)
French (fr)
Inventor
李曼
纪飞林
谭小平
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US15/118,830 priority Critical patent/US10152155B2/en
Publication of WO2017181538A1 publication Critical patent/WO2017181538A1/zh
Anticipated expiration legal-status Critical
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    • G06F3/0412—Digitisers structurally integrated in a display
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    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
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    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
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    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
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    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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Definitions

  • the invention belongs to the technical field of liquid crystal displays, and more particularly to a mutual capacitance type In-cell display device and a driving method thereof.
  • the embedded touch technology integrates the touch panel and the liquid crystal panel, and embeds the touch panel function into the liquid crystal panel, so that the liquid crystal panel has the functions of displaying and sensing the touch input at the same time.
  • the existing embedded touch technologies are mainly divided into two types, one is that the touch panel is formed on the upper structure of the liquid crystal cell, and the other is the structure (In-cell) formed by the touch panel in the liquid crystal cell.
  • In-cell TP is considered to be an advanced technology in the field, and the mutual-capacitance In-cell TP has high touch precision and can be realized.
  • the advantages of real multi-touch and so on have been welcomed by many small and medium-sized screen manufacturers.
  • the display screen needs to continuously scan the touch panel to check whether a gesture wake-up is performed.
  • the touch sensor always performs detection on the touch panel in the standby mode, that is, there is a constant sensing signal input. In this case, if there is residual charge in the liquid crystal, these residual charges may cause polarization of the liquid crystal under the action of the sensing signal. If the display is in the standby mode for displaying the black screen for a long time, the liquid crystal will be maintained at a certain deflection angle for a long time, resulting in abnormal display.
  • the present invention proposes a more simple, effective, and reduced power consumption mutual capacitance type In-cell display device and a driving method thereof.
  • An aspect of the present invention provides a mutual capacitance type In-cell display device including: a first substrate; a touch panel disposed on the first substrate; and a driver integrated circuit; And configured to simultaneously transmit the first enable signal and the second enable signal, the plurality of gate lines, each of the gate lines includes a first switching transistor, and the control end of the first switching transistor is connected to the driver integrated circuit; A line, each of the data lines includes a second switching transistor, and a control end of the second switching transistor is coupled to the driver integrated circuit.
  • the plurality of data lines are configured to, when in a standby state, when the first switching transistor and the second switching transistor are turned on in response to the first enable signal and the second enable signal, respectively, the plurality of data lines Discharged when connected to the touch panel.
  • the touch panel includes a plurality of mutual capacitive touch sensors arranged in a matrix form, each touch sensor includes a first electrode and a second electrode, the first electrode transmits a touch signal, and the second electrode receives the touch signal.
  • the first electrode is disposed above the first substrate in the row direction
  • the second electrode is disposed above the first electrode in the column direction
  • an insulating layer is disposed between the first electrode and the second electrode.
  • a second switching transistor is coupled between the data line and the first electrode of the touch sensor.
  • the second switching transistor is connected between the data line and the second electrode of the touch sensor.
  • the predetermined potential is a ground potential.
  • a first switching transistor is coupled between the gate line and the gate driver, the gate driver being configured to apply a VGH signal to the plurality of gate lines during the first switching transistor being turned on.
  • the gate driver comprises a GOA circuit.
  • the mutual capacitance type In-cell display device further includes: a liquid crystal layer integrally disposed on the first substrate with the touch panel; a second substrate disposed on the liquid crystal layer; and a transparent cover plate disposed at the first On the two substrates, wherein the color filter is disposed on a surface of the second substrate facing the touch panel.
  • Another aspect of the present invention provides a driving method of a mutual capacitance type In-cell display device, the driving method comprising: in a standby state, a driver integrated circuit simultaneously transmits a first enable signal and a second every predetermined time period An enable signal; a first switching transistor connected to the gate line is turned on in response to the first enable signal, and a second switching transistor connected to the data line is turned on in response to the second enable signal, wherein During the conduction of the first transistor and the second switching transistor, the data line is connected to the touch panel Discharge.
  • the predetermined time period is a scanning time period of N frames, and each of the N frames includes a first time period for performing a touch scan and a second time period for performing a display scan, where N is a positive integer.
  • the touch panel comprises a plurality of mutual capacitive touch sensors arranged in a matrix form, each mutual capacitive touch sensor comprising a first electrode for transmitting a touch signal and a second electrode for receiving a touch signal, and a second switching transistor Connected to the first electrode, wherein the first electrode has a predetermined potential during the second period of time, and the data line is discharged to a predetermined potential during the second switching transistor being turned on.
  • the predetermined potential is a ground potential.
  • the VGH signal is applied to the gate line by the gate driver during the first switching transistor being turned on.
  • the mutual capacitance type In-cell display device and the driving method thereof according to the embodiments of the present invention can effectively solve the risk of liquid crystal polarization caused by residual charges in the standby mode while reducing driving power consumption.
  • FIG. 1 is a schematic view showing a laminated structure of a mutual capacitance type In-cell display device according to an embodiment of the present invention.
  • FIG. 2 is a plan view showing a touch panel of the mutual capacitance type In-cell display device of FIG. 1.
  • FIG. 2 is a plan view showing a touch panel of the mutual capacitance type In-cell display device of FIG. 1.
  • FIG. 3 is a plan view showing a mutual capacitance type In-cell display device according to an embodiment of the present invention.
  • FIG. 4 is a timing chart showing a driving method of a mutual capacitance type In-cell display device according to an embodiment of the present invention.
  • the mutual capacitance type In-cell display device 100 includes a first substrate 110 and a touch panel 120.
  • the touch panel 120 is disposed on the first substrate 110.
  • the first substrate 110 may be a thin film transistor array substrate.
  • the first substrate 110 may include a plurality of gate lines, a plurality of data lines, and a plurality of pixels located at intersections of the gate lines and the data lines.
  • Each of the plurality of pixels may include a switching transistor, a driving transistor, and a capacitor.
  • the touch panel 120 may be disposed on the upper surface of the first substrate 110.
  • the mutual capacitance type In-cell display device 100 may further include a liquid crystal layer (not shown) 130, a second substrate 140, and a transparent cover 150.
  • the liquid crystal layer 130 may be integrally provided on the first substrate 110 with the touch panel 120 using an in-cell technique.
  • Embedded technology refers to the method of embedding the touch panel function into the liquid crystal layer. This technology can avoid defoaming when a plurality of panels of the display device are attached, and form a good vacuum, thereby improving the bonding yield of the display device and making the display device thinner and lighter.
  • the second substrate 140 may be disposed on the liquid crystal layer 130.
  • the second substrate 140 may be a color filter substrate.
  • a plurality of color filters may be disposed on a surface of the second substrate 140 facing the touch panel 120.
  • the plurality of color filters may be a red color filter, a green color filter, and a blue color filter arranged in an array form.
  • the transparent cover 150 may be disposed on the second substrate 140.
  • the transparent cover 150 may be made of glass for covering the upper surface of the display device to protect it from the external environment.
  • FIG. 2 is a plan view showing a touch panel of the mutual capacitance type In-cell display device of FIG. 1.
  • touch panel 120 can include a plurality of touch sensors 121.
  • the plurality of touch sensors 121 may be arranged in a matrix form.
  • the display device 100 may sense a touch action or gesture occurring on the display panel through the plurality of touch sensors 121.
  • Each of the touch sensors 121 may include a first electrode TX and a second electrode RX, wherein the first electrode TX may transmit a touch signal, and the second electrode RX may receive the touch signal.
  • the first electrode TX may be disposed on the first substrate along the first direction
  • the second electrode RX may be disposed above the first electrode TX in the second direction.
  • the first direction may be a column direction
  • the second direction may be a row direction.
  • the first direction can be substantially perpendicular to the second direction.
  • An insulating layer may be disposed between the first electrode TX and the second electrode RX.
  • the first electrode TX can transmit a common voltage VCOM.
  • the first electrodes TX1 to TXn are arranged above the first substrate 110 in the column direction.
  • the first electrodes TX in each row are spaced apart from each other by a predetermined distance.
  • the first electrodes TX in each column are spaced apart from each other by a predetermined distance.
  • the second electrode RX may be disposed above the first electrode TX in such a manner that an insulating layer is interposed therebetween.
  • the second electrode RX may be made of a conductive material such as metal.
  • the first electrode TX and the second electrode RX together form a mutual capacitive touch structure.
  • the display device 100 In the standby mode, the display device 100 needs to continuously scan the touch panel 120 to detect whether a touch input or a wake-up gesture has occurred. When residual charge is present in the liquid crystal, these residual charges cause polarization of the liquid crystal under the action of the scanning signal.
  • the mutual capacitance type In-cell display device according to the present invention can solve the above problems. Hereinafter, a detailed description will be made in conjunction with FIGS. 3 and 4.
  • FIG. 3 is a plan view showing a mutual capacitance type In-cell display device according to an embodiment of the present invention.
  • display device 100 includes a driver integrated circuit 160.
  • the driver integrated circuit 160 is configured to simultaneously transmit the first enable signal SWICH_1 and the second enable signal SWICH_2.
  • a plurality of gate lines G1 to Gn and a plurality of data lines D1 to Dn are located on the first substrate 110, wherein each of the gate lines includes a first switching transistor TFT1, and each of the data lines includes a second switching transistor TFT2.
  • the driver integrated circuit 160 may be disposed under the touch panel 120, and the first switching transistor TFT1 connected to the plurality of gate lines G1 to Gn may be disposed in the column direction at the touch panel 120.
  • the second switching transistor TFT2 connected to the plurality of data lines D1 to Dn may be disposed between the touch panel 120 and the driver integrated circuit 160 in the row direction.
  • the first switching transistor TFT1 and the second switching transistor TFT2 may both be N-type metal oxide semiconductor (NMOS) transistors, but the invention is not limited thereto, and the first switching transistor and the second switching transistor may also be Other types of transistors.
  • NMOS N-type metal oxide semiconductor
  • the control terminal G1 of the first switching transistor TFT1 is connected to the driver integrated circuit 160, and the control terminal G2 of the second switching transistor TFT2 is connected to the driver integrated circuit 160, and therefore, the first switching transistor TFT1 may be responsive to being transmitted from the driver integrated circuit 160.
  • the first enable signal SWICH_1 is turned on, and the second switching transistor TFT2 is responsive to the second enable sent from the driving integrated circuit 160.
  • the signal SWICH_2 can be turned on.
  • the first enable signal SWICH_1 and the second enable signal SWICH_2 may be outputted to the high level by the driving integrated circuit 160, respectively.
  • the first switching transistor TFT1 and the second switching transistor TFT2 may be turned on in response to a high level, but the present invention is not limited thereto.
  • display device 100 can also include a gate driver (not shown).
  • the gate driver may include a Gate Driver On Array. That is, the gate driver can be a GOA circuit.
  • the GOA circuit is a technique in which a gate driver of a thin film transistor TFT is directly fabricated on an array substrate instead of an external silicon chip to manufacture a driver. Since the GOA circuit can be directly disposed around the display panel, the process process is simplified, the production cost is also reduced, the integration of the display device is improved, and the display device is made lighter and thinner.
  • the first switching transistor TFT1 may be connected between each of the plurality of gate lines G1 to Gn and the gate driver.
  • the gate driver may be configured to apply a VGH signal to the plurality of gate lines during the first switching transistor TFT1 being turned on.
  • the source terminal S1 of each of the first switching transistors TFT1 is connected to the gate driver, the drain terminal D1 is connected to the corresponding gate line, and the control terminal G1 is connected to the driver integrated circuit 160.
  • the gate driver may apply a VGH signal to the first switching transistor through the source terminal S1.
  • the gate driver may output a VGH signal and a VGL signal at a predetermined timing, wherein the VGH signal is a signal that turns on a TFT in a pixel to charge a capacitor of the pixel, and the VGL signal turns off a TFT in the pixel A signal that maintains the voltage of the capacitor for a predetermined time.
  • the second switching transistor TFT2 may be connected between each of the plurality of data lines D1 to Dn and the first electrode TX of the touch sensor 121.
  • the source terminal S2 of the second switching transistor TFT2 may be connected to the first electrode TX of the touch sensor 121
  • the drain terminal D2 may be connected to the corresponding data line
  • the control terminal G2 may be connected to the driver integrated circuit 160.
  • the display device 100 when the display device 100 is in a standby state, when the first switching transistor TFT1 and the second switching transistor TFT2 are turned on in response to the first enable signal SWICH_1 and the second enable signal SWICH_2, respectively,
  • the plurality of data lines D1 to Dn are all connected to the touch panel 120 to be discharged.
  • touch sensing The first electrode TX of the device 121 may have a predetermined potential, for example, a ground potential.
  • the plurality of data lines D1 to Dn are discharged to the ground potential (GND) while the second switching transistor TFT2 is turned on in response to the second enable signal SWICH_2.
  • the residual charge in the liquid crystal display (LCD) panel in the mutual capacitance type In-cell display device can be removed in a timely, simple and effective manner without increasing the power consumption, thereby avoiding residual charge in standby.
  • the continuous scanning electric field of the mode causes the liquid crystal polarization phenomenon, thereby ensuring good display quality and touch sensitivity.
  • Embodiments of the invention are not limited to the structures described above.
  • the second switching transistor may not be connected between the plurality of data lines and the first electrode of the lowermost one of the touch sensors included in the touch panel as shown in FIG.
  • the second switching transistor can be connected between the plurality of data lines and the first electrode of any one row of touch sensors.
  • the second switching transistor may be connected between the plurality of data lines and the second electrode of the touch sensor included in the touch panel.
  • FIGS. 3 and 4 are a timing chart showing a driving method of a mutual capacitance type In-cell display device according to an embodiment of the present invention.
  • scanning is continuously performed on the touch panel 120, wherein each frame may include two time periods during which the touch scanning may be performed during the second time period.
  • a display scan can be performed.
  • N is a positive integer
  • the first enable signal SWICH_1 and the second enable signal SWICH_2 are both low during the period from the first frame to the Nth frame. level. Accordingly, the gate driver does not respond and the gate line receives the VGL signal.
  • the driver integrated circuit 160 will first make The levels of the enable signal SWICH_1 and the second enable signal SWICH_2 are pulled high.
  • the first switching transistor of the display device 100 is turned on in response to the first enable signal SWICH_1, and accordingly, the gate driver applies the VGH signal to the gate line.
  • the second switching transistor is turned on such that all of the data lines are connected to the first electrode TX of the touch sensor 121 included in the touch panel 120.
  • the second period of time has a predetermined potential VCOM, and therefore, during the second switching transistor is turned on, all of the data lines are discharged to the predetermined potential VCOM.
  • the predetermined potential VCOM is the ground potential GND, all the data lines are discharged to the ground, and the residual charges in the liquid crystal panel are released through the data lines.
  • the driving method of the embodiment of the present invention can effectively remove the residual charge in the liquid crystal panel of the mutual capacitance type In-cell display device, and prevent the residual charge from causing the liquid crystal under the action of the electric field of the touch scanning signal when the LCD is in the standby state. Polarization, resulting in an abnormal display.
  • the driver integrated circuit only needs to output two enable signals when clearing the screen, so that all the data lines can be turned on, thereby making the data lines Connected to the touch panel to quickly discharge, so power consumption can be reduced.

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Abstract

一种互电容式In-cell显示装置及其驱动方法。所述互电容式In-cell显示装置包括：第一基底（110）；触摸面板（120），设置在第一基底（110）上；驱动器集成电路（160），被构造为同时发送第一使能信号（SWICH_1）和第二使能信号（SWICH_2）；多条栅极线（Gate 1至Gate n），每条栅极线包括第一开关晶体管（TFT1），第一开关晶体管（TFT1）的控制端（G1）连接到驱动器集成电路（160）；多条数据线（Data 1至Data n），每条数据线包括第二开关晶体管（TFT2），第二开关晶体管（TFT2）的控制端（G2）连接到驱动器集成电路（160），其中，所述多条数据线（Data 1至Data n）被构造为：在待机状态下，当第一开关晶体管（TFT1）响应于第一使能信号（SWICH_1）而导通并且第二开关晶体管（TFT2）响应于第二使能信号（SWICH_2）而导通时，所述多条数据线（Data 1至Data n）被连接至触摸面板（120）而放电。

Description

互电容式In-cell显示装置及其驱动方法 技术领域
本发明属于液晶显示器技术领域，更具体地说，涉及一种互电容式In-cell显示装置及其驱动方法。
背景技术
随着智能手机市场竞争激烈化程度的日益加深，触摸-显示一体化产品迎来新一轮的角逐。嵌入式触控技术是将触摸面板和液晶面板结合为一体，并将触摸面板功能嵌入到液晶面板内，使得液晶面板同时具备显示和感测触摸输入的功能。现有的嵌入式触控技术主要分成两种，其一是触摸面板形成在液晶盒上方的结构(On-cell)，另一是触摸面板形成在液晶盒内的结构(In-cell)。随着显示技术的快速发展，内嵌式触摸面板(In-cell TP)被认为是本领域的高级技术而备受关注，其中，互电容式In-cell TP由于具有触控精度高、可实现真实的多点触控等优点而获得了许多中小尺寸屏幕生产企业的欢迎。
现在的智能手机在待机模式下通常都会有手势唤醒功能，例如，双击唤醒或滑动唤醒。因此，即使在待机模式下，显示屏也需要不断地进行触摸面板的扫描以检查是否进行了手势唤醒。对于In-cell结构的显示器而言，触摸传感器在待机模式下始终对触摸面板执行检测，即，不断有感测信号输入。在这种情况下，如果液晶中存在残余的电荷，则这些残余电荷会在感测信号的作用下使液晶产生极化现象。如果显示器长时间处于显示黑屏的待机模式，则会造成液晶长时间维持在某个偏转角度，从而导致画面显示异常。
发明内容
为了解决上述问题，本发明提出一种更加简单、有效、功耗降低的互电容式In-cell显示装置及其驱动方法。
本发明的一方面提供一种互电容式In-cell显示装置，该互电容式In-cell显示装置包括：第一基底；触摸面板，设置在第一基底上；驱动器集成电路， 被构造为同时发送第一使能信号和第二使能信号，多条栅极线，每条栅极线包括第一开关晶体管，第一开关晶体管的控制端连接到驱动器集成电路；多条数据线，每条数据线包括第二开关晶体管，第二开关晶体管的控制端连接到驱动器集成电路。所述多条数据线被构造为，在待机状态下，当第一开关晶体管和第二开关晶体管分别响应于第一使能信号和第二使能信号而导通时，所述多条数据线被连接至触摸面板而放电。
可选地，触摸面板包括布置成矩阵形式的多个互电容式触摸传感器，每个触摸传感器包括第一电极和第二电极，第一电极发送触控信号，第二电极接收触控信号。
可选地，第一电极沿行方向设置在第一基底上方，第二电极沿列方向设置在第一电极上方，第一电极与第二电极之间设置有绝缘层。
可选地，第二开关晶体管连接在数据线与触摸传感器的第一电极之间。
可选地，第二开关晶体管连接在数据线与触摸传感器的第二电极之间。
可选地，当不执行触摸扫描时，触摸传感器的第一电极具有预定电位，所述多条数据线在第二开关晶体管导通期间放电至所述预定电位。
可选地，所述预定电位是接地电位。
可选地，第一开关晶体管连接在栅极线与栅极驱动器之间，所述栅极驱动器被构造为在第一开关晶体管导通期间将VGH信号施加到所述多条栅极线。
可选地，所述栅极驱动器包括GOA电路。
可选地，所述互电容式In-cell显示装置还包括：液晶层，与触摸面板一体地设置在第一基底上；第二基底，设置在液晶层上；以及透明盖板，设置在第二基底上，其中，滤色器布置在第二基底的面对触摸面板的表面上。
本发明的另一方面提供一种互电容式In-cell显示装置的驱动方法，该驱动方法包括：在待机状态下，每隔预定时间段，驱动器集成电路同时发送第一使能信号和第二使能信号；连接在栅极线上的第一开关晶体管响应于第一使能信号而导通，连接在数据线上的第二开关晶体管响应于第二使能信号而导通，其中，在第一晶体管和第二开关晶体管的导通期间，数据线被连接至触摸面板而 放电。
可选地，所述预定时间段为N个帧的扫描时间段，并且所述N个帧中的每个帧包括执行触摸扫描的第一时间段和执行显示扫描的第二时间段，其中，N为正整数。
可选地，触摸面板包括布置成矩阵形式的多个互电容式触摸传感器，每个互电容式触摸传感器包括发送触控信号的第一电极和接收触控信号的第二电极，第二开关晶体管连接到第一电极，其中，第一电极在第二时间段期间具有预定电位，数据线在第二开关晶体管导通期间放电至预定电位。
可选地，所述预定电位是接地电位。
可选地，在第一开关晶体管导通期间，通过栅极驱动器将VGH信号施加到栅极线。
根据本发明的实施例的互电容式In-cell显示装置及其驱动方法，能够有效解决待机模式下由残余电荷引起的液晶极化的风险，同时降低驱动功耗。
在下文中，将部分地详细阐述本发明。然而，本发明的其他特征和/或优点将通过描述而变得清楚，或者可以经过本发明的实施而得知。
附图说明
通过下面结合附图进行的对实施例的描述，本发明的上述和/或其它目的和优点将会变得更加清楚，其中：
图1是示出根据本发明的实施例的互电容式In-cell显示装置的层叠结构的示意图。
图2是示出图1的互电容式In-cell显示装置的触摸面板的平面图。
图3是示出根据本发明的实施例的互电容式In-cell显示装置的平面图。
图4是示出根据本发明的实施例的互电容式In-cell显示装置的驱动方法的时序图。
具体实施方式
在下文中，将结合附图详细描述本发明的实施例。在附图中，清楚而简明地示出了与发明构思有关的主要元件，可夸大层或区域的形状，并且可省略次要的元件以避免表述不清楚。在整个说明书附图中，相同的附图标记始终指示相同的元件。然而，本发明不局限于下述实施例。在各个实施例或相应的方法描述中涉及的特征、元件或结构，均可单独或组合应用于其他实施例。
图1是示出根据本发明的实施例的互电容式In-cell显示装置的层叠结构的示意图。如图1中所示，互电容式In-cell显示装置100包括第一基底110和触摸面板120。触摸面板120设置在第一基底110上。在本实施例中，第一基底110可以是薄膜晶体管阵列基底。第一基底110可以包括多条栅极线、多条数据线以及位于栅极线与数据线交叉处的多个像素。多个像素中的每个可以包括开关晶体管、驱动晶体管和电容器。在本实施例中，触摸面板120可以设置在第一基底110的上表面上。
在另一个实施例中，可选地，所述互电容式In-cell显示装置100还可以包括液晶层(未示出)130、第二基底140以及透明盖板150。液晶层130可以利用嵌入式(In-cell)技术与触摸面板120一体地设置在第一基底110上。嵌入式技术是指将触摸面板功能嵌入到液晶层中的方法。该技术能够在贴合显示装置的多个面板时，避免脱泡，形成良好的真空，从而提高显示装置的贴合良率并使显示装置变得更加轻薄。第二基底140可以设置在液晶层130上。第二基底140可以是滤色器基底。第二基底140的面对触摸面板120的表面上可以设置有多个滤色器。所述多个滤色器可以是布置成阵列形式的红滤色器、绿滤色器和蓝滤色器。透明盖板150可以设置在第二基底140上。透明盖板150可以由玻璃制成，用于覆盖显示装置的上表面以保护其受外部环境影响。
图2是示出图1的互电容式In-cell显示装置的触摸面板的平面图。在一个实施例中，触摸面板120可以包括多个触摸传感器121。所述多个触摸传感器121可以布置成矩阵形式。显示装置100可以通过所述多个触摸传感器121来感测发生在显示面板上的触摸动作或手势。每个触摸传感器121可以包括第一电极TX和第二电极RX，其中，第一电极TX可以发送触控信号，第二电极RX可以接收触控信号。
可选地，在一个实施例中，第一电极TX可以沿第一方向设置在第一基底 110上方，第二电极RX可以沿第二方向设置在第一电极TX上方。第一方向可以是列方向，第二方向可以是行方向。第一方向可以与第二方向基本垂直。第一电极TX与第二电极RX之间可以设置有绝缘层。
参照图2，在本实施例中，第一电极TX可以传输共电压VCOM。第一电极TX1至TXn沿列方向布置在第一基底110上方。每一行中的第一电极TX彼此分隔开预定的距离。每一列中的第一电极TX彼此分隔开预定的距离。对于每个触摸传感器121而言，第二电极RX可以按照绝缘层置于其间的方式设置在第一电极TX上方。第二电极RX可以由导电材料制成，例如，金属。第一电极TX与第二电极RX共同构成互电容式触控结构。
在待机模式下，显示装置100需要不断地对触摸面板120进行扫描，以检测是否发生了触摸输入或唤醒手势。当液晶中存在残余电荷时，这些残余电荷会在扫描信号的作用下使液晶产生极化现象。根据本发明的互电容式In-cell显示装置可以解决上述问题。下面，将结合图3和图4进行详细描述。
图3是示出根据本发明的实施例的互电容式In-cell显示装置的平面图。如图3中所示，显示装置100包括驱动器集成电路160。驱动器集成电路160被构造为同时发送第一使能信号SWICH_1和第二使能信号SWICH_2。多条栅极线G1至Gn和多条数据线D1至Dn位于第一基底110上，其中，每条栅极线包括第一开关晶体管TFT1，每条数据线包括第二开关晶体管TFT2。
参照图3，在一个实施例中，驱动器集成电路160可以设置在触摸面板120下方，连接到所述多条栅极线G1至Gn的第一开关晶体管TFT1可以沿列方向布置在触摸面板120的左侧，连接到所述多条数据线D1至Dn的第二开关晶体管TFT2可以沿行方向布置在触摸面板120与驱动器集成电路160之间。在本实施例中，第一开关晶体管TFT1和第二开关晶体管TFT2可以均为N型金属氧化物半导体(NMOS)晶体管，但是本发明不限于此，第一开关晶体管和第二开关晶体管还可以是其他类型的晶体管。
第一开关晶体管TFT1的控制端G1连接到驱动器集成电路160，并且第二开关晶体管TFT2的控制端G2连接到驱动器集成电路160，因此，第一开关晶体管TFT1可以响应于从驱动器集成电路160发送的第一使能信号SWICH_1而导通，第二开关晶体管TFT2可以响应于从驱动集成电路160发送的第二使 能信号SWICH_2而导通。在本实施例中，第一使能信号SWICH_1和第二使能信号SWICH_2可以分别被驱动集成电路160输出为高电平。第一开关晶体管TFT1和第二开关晶体管TFT2可以响应于高电平而导通，但本发明不限于此。
在另一个实施例中，显示装置100还可以包括栅极驱动器(未示出)。所述栅极驱动器可以包括阵列基板行驱动(Gate Driver On Array)。即，所述栅极驱动器可以是GOA电路。GOA电路是直接将薄膜晶体管TFT的栅极驱动器制作在阵列基板上，以代替由外接的硅芯片来制造驱动器的技术。由于GOA电路可直接设置在显示面板周围，因此简化了制程工艺，还可降低生产成本，提高显示装置的集成度，使显示装置更加轻薄。
参照图3，第一开关晶体管TFT1可以连接在多条栅极线G1至Gn中的每条栅极线与栅极驱动器之间。所述栅极驱动器可以被构造为在第一开关晶体管TFT1被导通期间，将VGH信号施加到所述多条栅极线。
具体地，每个第一开关晶体管TFT1的源极端S1连接到栅极驱动器，漏极端D1连接到相应的栅极线，而控制端G1连接到驱动器集成电路160。当第一开关晶体管TFT1的控制端G1响应于从驱动器集成电路160传输的第一使能信号SWICH_1而导通时，栅极驱动器可以通过源极端S1将VGH信号施加到与所述第一开关晶体管TFT1相连接的栅极线。这里，所述栅极驱动器可以按照预定的时序输出VGH信号和VGL信号，其中，VGH信号是使像素中的TFT导通以对像素的电容器充电的信号，VGL信号是使像素中的TFT截止以将电容器的电压保持预定时间的信号。
参照图3，第二开关晶体管TFT2可以连接在多条数据线D1至Dn中的每条数据线与触摸传感器121的第一电极TX之间。在本实施例中，第二开关晶体管TFT2的源极端S2可以连接到触摸传感器121的第一电极TX，漏极端D2可以连接到相应的数据线，而控制端G2可以连接到驱动器集成电路160。
根据本发明构思，在显示装置100处于待机状态的情况下，当第一开关晶体管TFT1和第二开关晶体管TFT2分别响应于第一使能信号SWICH_1和第二使能信号SWICH_2而导通时，所述多条数据线D1至Dn均被连接至触摸面板120而放电。具体地，当不针对触摸面板120执行触摸扫描操作时，触摸传感 器121的第一电极TX可以具有预定电位，例如，接地电位。在这种情况下，在第二开关晶体管TFT2响应于第二使能信号SWICH_2而导通期间，所述多条数据线D1至Dn被放电至接地电位(GND)。
根据本发明的实施例，可以在不增加功耗的前提下，及时、简单而有效地清除互电容式In-cell显示装置中的液晶显示(LCD)面板内的残余电荷，避免残余电荷在待机模式的持续扫描电场的作用下导致液晶极化现象，进而保证良好的显示画质和触控灵敏度。
本发明的实施例不限于以上描述的结构。例如，第二开关晶体管可以不像图3中示出的那样被连接在多条数据线与触摸面板中包括的触摸传感器中的最下面一行触摸传感器的第一电极之间。相反，第二开关晶体管可以连接在多条数据线与任何一行触摸传感器的第一电极之间。此外，第二开关晶体管可以连接在多条数据线与触摸面板中包括的触摸传感器的第二电极之间。
在下文中，将参照图4详细描述根据本发明的实施例的互电容式In-cell显示装置的驱动方法。上面提到过的特征均包含在下面的描述中，将不针对所有特征进行非必要的重复性描述。
图4是示出根据本发明的实施例的互电容式In-cell显示装置的驱动方法的时序图。参照图3和图4，在显示装置100处于待机状态时，持续对触摸面板120执行扫描，其中，每帧可以包括两个时间段，第一时间段期间可以执行触摸扫描，第二时间段期间可以执行显示扫描。当持续N帧(N为正整数)没有检测到触摸动作或唤醒手势时，在第1帧至第N帧的时间段期间，第一使能信号SWICH_1和第二使能信号SWICH_2都为低电平。相应地，栅极驱动器不发生响应，栅极线接收VGL信号。
接下来，当扫描第N+1帧时，在第N+1帧的第一时间段结束(即，完成了触摸扫描之后)并且第二时间段开始的时刻，驱动器集成电路160将第一使能信号SWICH_1和第二使能信号SWICH_2的电平拉高。此时，显示装置100的第一开关晶体管响应于第一使能信号SWICH_1而导通，相应地，栅极驱动器将VGH信号施加到栅极线。同时，响应于第二使能信号SWICH_2，第二开关晶体管导通，使得所有数据线被连接到触摸面板120中包括的触摸传感器121的第一电极TX。由于触摸传感器121的第一电极TX在不进行触摸扫描的 第二时间段期间具有预定电位VCOM，因此，在第二开关晶体管导通期间，所有数据线被放电至预定电位VCOM。当预定电位VCOM是接地电位GND时，所有数据线被对地放电，液晶面板中的残余电荷通过数据线得到释放。
通过本发明的实施例的驱动方法，可有效清除互电容式In-cell显示装置的液晶面板中的残余电荷，防止LCD在处于待机状态时，这些残余电荷在触摸扫描信号电场的作用下引起液晶极化，从而导致显示异常。
另外，根据本发明的实施例的互电容式In-cell显示装置的结构，驱动器集成电路在清屏时只需输出两个使能信号，就可以完成所有数据线的导通，从而使数据线连接至触摸面板，以迅速完成放电，因此，可以降低功耗。
虽然已经示出和描述了以上实施例，但本领域技术人员将理解，本发明的创造性构思不限于这些实施例。在不脱离本发明的精神和原则的情况下，可以对上述实施例进行各种修改和变化。

Claims (15)

  1. 一种互电容式In-cell显示装置，包括：
    第一基底；
    触摸面板，设置在第一基底上；
    驱动器集成电路，被构造为同时发送第一使能信号和第二使能信号，
    多条栅极线，每条栅极线包括第一开关晶体管，第一开关晶体管的控制端连接到驱动器集成电路；
    多条数据线，每条数据线包括第二开关晶体管，第二开关晶体管的控制端连接到驱动器集成电路，
    其中，所述多条数据线被构造为，在待机状态下，当第一开关晶体管和第二开关晶体管分别响应于第一使能信号和第二使能信号而导通时，所述多条数据线被连接至触摸面板而放电。
  2. 根据权利要求1所述的互电容式In-cell显示装置，其中，触摸面板包括布置成矩阵形式的多个互电容式触摸传感器，每个触摸传感器包括第一电极和第二电极，第一电极发送触控信号，第二电极接收触控信号。
  3. 根据权利要求2所述的互电容式In-cell显示装置，其中，第一电极沿行方向设置在第一基底上方，第二电极沿列方向设置在第一电极上方，第一电极与第二电极之间设置有绝缘层。
  4. 根据权利要求3所述的互电容式In-cell显示装置，其中，第二开关晶体管连接在数据线与触摸传感器的第一电极之间。
  5. 根据权利要求3所述的互电容式In-cell显示装置，其中，第二开关晶体管连接在数据线与触摸传感器的第二电极之间。
  6. 根据权利要求4所述的互电容式In-cell显示装置，其中，当不执行触摸扫描时，触摸传感器的第一电极具有预定电位，所述多条数据线在第二开关 晶体管导通期间放电至所述预定电位。
  7. 根据权利要求5所述的互电容式In-cell显示装置，其中，所述预定电位是接地电位。
  8. 根据权利要求1所述的互电容式In-cell显示装置，其中，第一开关晶体管连接在栅极线与栅极驱动器之间，所述栅极驱动器被构造为在第一开关晶体管导通期间将VGH信号施加到所述多条栅极线。
  9. 根据权利要求8所述的互电容式In-cell显示装置，其中，所述栅极驱动器包括GOA电路。
  10. 根据权利要求1所述的互电容式In-cell显示装置，还包括：
    液晶层，与触摸面板一体地设置在第一基底上；
    第二基底，设置在液晶层上；以及
    透明盖板，设置在第二基底上，其中，滤色器布置在第二基底的面对触摸面板的表面上。
  11. 一种互电容式In-cell显示装置的驱动方法，包括：
    在待机状态下，每隔预定时间段，驱动器集成电路同时发送第一使能信号和第二使能信号；
    连接在栅极线上的第一开关晶体管响应于第一使能信号而导通，连接在数据线上的第二开关晶体管响应于第二使能信号而导通，
    其中，在第一晶体管和第二开关晶体管的导通期间，数据线被连接至触摸面板而放电。
  12. 根据权利要求11所述的驱动方法，其中，所述预定时间段为N个帧的扫描时间段，并且所述N个帧中的每个帧包括执行触摸扫描的第一时间段和执行显示扫描的第二时间段，其中，N为正整数。
  13. 根据权利要求12所述的驱动方法，其中，触摸面板包括布置成矩阵 形式的多个互电容式触摸传感器，每个互电容式触摸传感器包括发送触控信号的第一电极和接收触控信号的第二电极，第二开关晶体管连接到第一电极，
    其中，第一电极在第二时间段期间具有预定电位，数据线在第二开关晶体管导通期间放电至预定电位。
  14. 根据权利要求13所述的驱动方法，其中，预定电位是接地电位。
  15. 根据权利要求11所述的驱动方法，其中，在第一开关晶体管导通期间通过栅极驱动器将VGH信号施加到栅极线。
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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108762560B (zh) * 2018-05-25 2021-01-29 京东方科技集团股份有限公司 触控面板及其控制方法、显示装置
CN111258454B (zh) * 2020-01-15 2023-06-20 友达光电（昆山）有限公司 触控显示装置及其放电方法
US11353988B1 (en) * 2021-02-19 2022-06-07 Himax Technologies Limited Touch display apparatus and method for touch display panel
CN114898691A (zh) * 2022-04-22 2022-08-12 上海中航光电子有限公司 一种显示模组及其控制方法、显示装置
US12573348B1 (en) * 2025-03-26 2026-03-10 Himax Technologies Limited Gate driver, display device, and driving method of display panel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080309627A1 (en) * 2007-06-13 2008-12-18 Apple Inc. Integrated in-plane switching
CN203133794U (zh) * 2013-03-29 2013-08-14 京东方科技集团股份有限公司 一种触摸屏
CN104280920A (zh) * 2014-10-17 2015-01-14 深圳市华星光电技术有限公司 集成触摸屏的液晶显示面板及液晶显示装置
CN104570417A (zh) * 2014-12-23 2015-04-29 上海天马微电子有限公司 一种液晶显示屏和电子设备
CN105138179A (zh) * 2015-09-15 2015-12-09 深圳市华星光电技术有限公司 全嵌入式触摸屏及移动装置
CN105335009A (zh) * 2015-12-03 2016-02-17 深圳磨石科技有限公司 触摸显示装置和电子设备

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8243027B2 (en) * 2006-06-09 2012-08-14 Apple Inc. Touch screen liquid crystal display
US9898121B2 (en) * 2010-04-30 2018-02-20 Synaptics Incorporated Integrated capacitive sensing and displaying
KR101212420B1 (ko) * 2011-02-25 2012-12-13 하이디스 테크놀로지 주식회사 터치센서 내장형 액정표시장치 및 그 제조 방법
KR20150039934A (ko) * 2013-10-04 2015-04-14 삼성디스플레이 주식회사 터치센서 내장형 액정표시장치
KR102357768B1 (ko) * 2014-09-26 2022-02-04 엘지디스플레이 주식회사 터치 센싱 장치
CN104407760B (zh) * 2014-10-13 2018-02-27 京东方科技集团股份有限公司 一种内嵌式触摸屏及显示装置
CN204719368U (zh) * 2015-05-08 2015-10-21 厦门天马微电子有限公司 触控装置
KR102393790B1 (ko) * 2015-07-29 2022-05-03 엘지디스플레이 주식회사 표시 장치
CN105335014A (zh) * 2015-12-03 2016-02-17 深圳磨石科技有限公司 触摸显示装置和电子设备

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080309627A1 (en) * 2007-06-13 2008-12-18 Apple Inc. Integrated in-plane switching
CN203133794U (zh) * 2013-03-29 2013-08-14 京东方科技集团股份有限公司 一种触摸屏
CN104280920A (zh) * 2014-10-17 2015-01-14 深圳市华星光电技术有限公司 集成触摸屏的液晶显示面板及液晶显示装置
CN104570417A (zh) * 2014-12-23 2015-04-29 上海天马微电子有限公司 一种液晶显示屏和电子设备
CN105138179A (zh) * 2015-09-15 2015-12-09 深圳市华星光电技术有限公司 全嵌入式触摸屏及移动装置
CN105335009A (zh) * 2015-12-03 2016-02-17 深圳磨石科技有限公司 触摸显示装置和电子设备

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