WO2020034282A1 - 一种嵌入式触控显示面板及其驱动方法 - Google Patents

一种嵌入式触控显示面板及其驱动方法 Download PDF

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WO2020034282A1
WO2020034282A1 PCT/CN2018/104470 CN2018104470W WO2020034282A1 WO 2020034282 A1 WO2020034282 A1 WO 2020034282A1 CN 2018104470 W CN2018104470 W CN 2018104470W WO 2020034282 A1 WO2020034282 A1 WO 2020034282A1
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Prior art keywords
capacitor
cathode
display panel
emitting device
thin film
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English (en)
French (fr)
Inventor
林建宏
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to US16/232,993 priority Critical patent/US20200057515A1/en
Publication of WO2020034282A1 publication Critical patent/WO2020034282A1/zh
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

Definitions

  • the present invention relates to the field of display technology, and in particular, to an embedded touch display panel and a driving method thereof.
  • the OLED (Organic Light-Emitting Diode) display has the advantages of wide color gamut, high contrast, energy saving, and foldability, so it has strong competitiveness in the new era display.
  • AMOLED (Active-matrix, organic light emitting diode) display technology is one of the key development directions for flexible displays.
  • the basic driving circuit of the AMOLED display may be 3T1C. As shown in FIG. 1, it includes a switching thin film transistor T1, a driving thin film transistor T2, an enabling thin film transistor T3, and a storage capacitor Cst.
  • the driving current of the OLED is controlled by the driving thin film transistor T2, and the switching thin film transistor T1 determines the data signal to enter the gate of the driving thin film transistor T2, so as to control the current of the driving thin film transistor T2, and the enabled thin film transistor T3 controls the power voltage signal Whether the current corresponding to VDD flows through the OLED determines whether the OLED emits light.
  • mobile phone displays are equipped with touch functions.
  • touch functions Currently, most OLED displays on the market use external touch screens.
  • New materials also need to be developed for bending needs, so there will be a higher threshold in the production of OLED displays.
  • the present invention provides an embedded touch display panel and a driving method thereof, which does not need to use an external touch screen, does not increase the thickness of the touch display panel, and can reduce the manufacturing of the touch display panel threshold.
  • An embedded touch display panel provided by the present invention includes: a driving circuit, a light emitting device, an integrated circuit, and a plurality of cathodes;
  • the driving circuit is connected to a signal input terminal of the light emitting device, and is configured to drive the light emitting device to emit light;
  • the cathode is connected to a signal output terminal of the light emitting device, and the cathode is used to form a first capacitance with a sensing finger;
  • the integrated circuit is connected to the cathode, and is configured to receive an electrical signal from the cathode, calculate a capacitance value of the first capacitor, and determine a position of the first capacitor according to the capacitance value of the first capacitor, Alternatively, the cathode is connected to a common ground terminal voltage signal.
  • the integrated circuit includes a first switching unit and an integrator
  • a first terminal of the first switching unit is connected to the cathode, a second terminal and a third terminal of the first switching unit are respectively connected to an input terminal of the integrator and connected to the common ground terminal voltage signal.
  • the first switch unit is configured to connect the cathode to an input terminal of the integrator, or connect the cathode to the common ground terminal voltage signal;
  • the integrator is configured to obtain a capacitor voltage signal generated by the first capacitor and output the capacitor voltage signal.
  • the integrated circuit further includes a calculation judgment unit
  • the calculation and judgment unit is configured to receive the capacitor voltage signal from the integrator, and determine a capacitance value of the first capacitor and a position of the first capacitor according to the capacitor voltage signal.
  • the integrator includes an amplifier and a second capacitor
  • Two ends of the second capacitor are respectively connected to a first input terminal and an output terminal of the amplifier
  • a first input terminal of the amplifier is also connected to a second terminal of the first switching unit, and a second input terminal of the amplifier is used to access a reference voltage signal.
  • the number of the first switching unit and the integrator are multiple, and the cathode and the first switching unit are connected in a one-to-one correspondence, and the first switching unit and the integrator are connected. One-to-one correspondence between them.
  • the driving circuit includes a first thin film transistor, a second thin film transistor, a second switching unit, and a third capacitor;
  • a drain and a gate of the first thin film transistor are connected to a data signal and a switching signal, respectively, and a source of the first thin film transistor is connected to a gate of the second thin film transistor;
  • the drain of the second thin film transistor is connected to a power voltage signal, and the source of the second thin film transistor is connected to the light emitting device through the second switching unit; the second switching unit is used to control the first Connection or disconnection between two thin film transistors and the light emitting device;
  • Both ends of the third capacitor are connected to a gate and a drain of the second thin film transistor, respectively.
  • the driving circuit is fixed on a flexible circuit board.
  • the invention also provides an embedded touch display panel, which includes: a driving circuit, a light emitting device, an integrated circuit, and a plurality of cathodes;
  • the driving circuit is connected to a signal input terminal of the light emitting device and is used to drive the light emitting device to emit light; and the driving circuit is fixed on a flexible circuit board;
  • the cathode is connected to a signal output terminal of the light emitting device, and the cathode is used to form a first capacitance with a sensing finger;
  • the integrated circuit is connected to the cathode, and is configured to receive an electrical signal from the cathode, calculate a capacitance value of the first capacitor, and determine a position of the first capacitor according to the capacitance value of the first capacitor, Or connecting the cathode to a common ground terminal voltage signal;
  • the integrated circuit includes a first switching unit and an integrator
  • a first terminal of the first switching unit is connected to the cathode, a second terminal and a third terminal of the first switching unit are respectively connected to an input terminal of the integrator and connected to the common ground terminal voltage signal.
  • the first switch unit is configured to connect the cathode to an input terminal of the integrator, or connect the cathode to the common ground terminal voltage signal;
  • the integrator is configured to obtain a capacitor voltage signal generated by the first capacitor and output the capacitor voltage signal.
  • the integrated circuit further includes a calculation judgment unit
  • the calculation and judgment unit is configured to receive the capacitor voltage signal from the integrator, and determine a capacitance value of the first capacitor and a position of the first capacitor according to the capacitor voltage signal.
  • the integrator includes an amplifier and a second capacitor
  • Two ends of the second capacitor are respectively connected to a first input terminal and an output terminal of the amplifier
  • a first input terminal of the amplifier is also connected to a second terminal of the first switching unit, and a second input terminal of the amplifier is used to access a reference voltage signal.
  • the number of the first switching unit and the integrator are multiple, and the cathode and the first switching unit are connected in a one-to-one correspondence, and the first switching unit and the integrator are connected. One-to-one correspondence between them.
  • the driving circuit includes a first thin film transistor, a second thin film transistor, a second switching unit, and a third capacitor;
  • a drain and a gate of the first thin film transistor are connected to a data signal and a switching signal, respectively, and a source of the first thin film transistor is connected to a gate of the second thin film transistor;
  • the drain of the second thin film transistor is connected to a power voltage signal, and the source of the second thin film transistor is connected to the light emitting device through the second switching unit; the second switching unit is used to control the first Connection or disconnection between two thin film transistors and the light emitting device;
  • Both ends of the third capacitor are connected to a gate and a drain of the second thin film transistor, respectively.
  • the invention provides a driving method of an embedded touch display panel, which is applied to the embedded touch display panel.
  • the embedded touch display panel includes: a driving circuit, a light emitting device, an integrated circuit, and a plurality of cathodes;
  • the driving circuit is connected to a signal input terminal of the light emitting device, and is configured to drive the light emitting device to emit light;
  • the cathode is connected to a signal output terminal of the light emitting device, and the cathode is used to form a first capacitance with a sensing finger;
  • the integrated circuit is connected to the cathode, and is configured to receive an electrical signal from the cathode, calculate a capacitance value of the first capacitor, and determine a position of the first capacitor according to the capacitance value of the first capacitor, Alternatively, the cathode is connected to a common ground terminal voltage signal.
  • the driving method includes the following steps:
  • the plurality of cathodes are arranged in an array, and the electrical signals from the plurality of cathodes are sequentially received in a set order, specifically:
  • the electrical signals from the plurality of cathodes are sequentially received row by row or column by column.
  • the electrical signals from the plurality of cathodes are sequentially received in a set order, only the electrical signals of a part of the plurality of cathodes are received at a time, and the light emitting device connected to the part of the cathodes and Disconnect the corresponding drive circuits.
  • a first capacitor can be formed with the corresponding cathode
  • an integrated circuit can receive an electrical signal from the cathode, and calculate a capacitance value of the first capacitor, Furthermore, it is determined whether the first capacitor exists, that is, whether there is a finger touch on the cathode, and by sequentially receiving electrical signals of a plurality of cathodes, it is possible to determine the position of the cathode where a finger touches.
  • the integrated circuit can also connect the cathode to a common ground terminal voltage signal, so that the light emitting device can emit light normally.
  • the embedded touch display panel provided by the present invention does not need to use an external touch screen, does not increase the thickness of the touch display panel, and does not need to develop new materials when the touch display panel needs to be bent. Therefore, the manufacturing threshold of the touch display panel is also reduced.
  • FIG. 1 is a driving circuit diagram of an AMOLED display provided by the present invention.
  • FIG. 2 is a schematic diagram of connections between a plurality of cathodes and an integrated circuit provided by the present invention.
  • FIG. 3 is a schematic diagram of a driving circuit and an integrated circuit according to an embodiment of the present invention.
  • FIG. 4 is a principle block diagram of an integrated circuit provided by the present invention.
  • FIG. 5 is a schematic diagram of an integrated circuit provided by the present invention collecting electrical signals from a cathode.
  • FIG. 6 is a first schematic diagram of an integrated circuit provided by the present invention for connecting a cathode to a common ground terminal voltage.
  • FIG. 7 is a second schematic diagram of an integrated circuit provided by the present invention for connecting a cathode to a common ground terminal voltage.
  • the embedded touch display panel 1 includes an integrated circuit 12 and a plurality of cathodes 111, and further includes a driving circuit and a light emitting device OLED (see FIG. 3). Organic Light-Emitting Diode). Generally, the embedded touch display panel 1 further includes a ground electrode.
  • the driving circuit is connected to the signal input terminal of the light emitting device OLED, and is used to drive the light emitting device OLED to emit light.
  • the cathode 111 is connected to the signal output terminal of the light emitting device OLED, and the cathode 111 is used to form a first capacitor Cf with the sensing finger, and the cathode 111 also forms a fourth capacitor Cg with the ground electrode.
  • the integrated circuit 12 is electrically connected to the cathode 111 through a connection line 13 for receiving an electrical signal from the cathode 111, calculating the capacitance of the first capacitor Cf, and according to the capacitance of the first capacitor Cf Determine the position of the first capacitor Cf, or connect the cathode 111 to the common ground terminal voltage signal VSS.
  • All the cathodes 111 are located in the effective display area 11 of the embedded touch display panel 1 and arranged in an array.
  • the fourth capacitor Cg cannot be too large, otherwise the signal generated by the fourth capacitor Cg will affect the calculation of the capacitance of the first capacitor Cf.
  • the integrated circuit 12 includes a first switching unit 121 and an integrator 122.
  • a first terminal of the first switching unit 121 is connected to the cathode 111, a second terminal and a third terminal of the first switching unit 121 are respectively connected to the input terminal of the integrator 122 and connected to a common ground terminal voltage signal VSS. 121 is used to connect the cathode 111 to the input terminal of the integrator 122, or to connect the cathode 111 to a common ground terminal voltage signal VSS.
  • the first switching unit 121 may be two switching tubes, and each cathode 111 may be respectively connected to the integrator 122 and connected to the common ground terminal voltage signal VSS through the two switching tubes. When one switch is turned on, the other switch is turned off.
  • the integrator 122 is configured to obtain a capacitor voltage signal generated by the first capacitor Cf and output the capacitor voltage signal.
  • the integrated circuit 12 further includes a calculation judgment unit 123.
  • the calculation and judging unit 123 is configured to receive the capacitor voltage signal from the integrator 122, and judge the capacitance value of the first capacitor Cf and the position of the first capacitor Cf according to the capacitor voltage signal.
  • the integrator 122 includes an amplifier and a second capacitor Cfb. Both ends of the second capacitor Cfb are respectively connected to the first input terminal and the output terminal of the amplifier.
  • the first input terminal of the amplifier is also connected to the second terminal of the first switching unit 121, and the second input terminal of the amplifier is used to access the reference voltage signal.
  • the second capacitor Cfb is used to accumulate charges from the cathode 111 to form a voltage.
  • the amplifier is used to compare the voltage across the second capacitor Cfb with a reference voltage signal to obtain a capacitor voltage signal and output it.
  • the number of the first switching unit 121 and the integrator 122 are multiple, and there is a one-to-one corresponding connection between the cathode 111 and the first switching unit 121, and a one-to-one corresponding connection between the first switching unit 121 and the integrator 122. .
  • the driving circuit includes a first thin film transistor T1, a second thin film transistor T2, a second switching unit, and a third capacitor Cst.
  • the second switch unit may be a switch tube (for example, the third thin film transistor T3 in FIG. 3), and the switch tube is controlled to be turned on or off by inputting an enable signal to the switch tube.
  • the drain and gate of the first thin film transistor T1 are connected to the data signal and the switching signal, respectively, and the source of the first thin film transistor T1 is connected to the gate of the second thin film transistor T2.
  • the switching signal controls the first thin film transistor T1 to be turned on or off.
  • the drain of the second thin film transistor T2 is connected to the power voltage signal VDD, and the source of the second thin film transistor T2 is connected to the light emitting device OLED through a second switching unit; the second switching unit is used to control the second thin film transistor T2 and the light emitting device OLED Connected or disconnected.
  • Both ends of the third capacitor Cst are connected to the gate and the drain of the second thin film transistor T2, respectively.
  • the driving circuit is fixed on a flexible circuit board.
  • the present invention also provides a driving method for an embedded touch display panel 1.
  • the method is applied to the above-mentioned embedded touch display panel 1 and includes the following steps:
  • the plurality of cathodes 111 are arranged in an array, and the electrical signals from the plurality of cathodes 111 are sequentially received in a set order, which are specifically:
  • the electrical signals from the plurality of cathodes 111 are sequentially received row by row or column by column.
  • the cathode 111 in the first row in FIG. 2 may be connected to the integrator 122 in the integrated circuit 12, and the cathodes in the other rows may be connected.
  • 111 is not connected to the corresponding integrator 122, and the integrator 122 corresponding to the cathode 111 of the first row can receive the electric signal from the cathode 111 of the first row.
  • the cathode 111 of the second row is connected to the corresponding integrator 122, and the cathode 111 of the other row is not connected to the corresponding integrator 122 until the cathode 111 of the last row is connected to the corresponding integrator 122.
  • the cathode 111 in the first column in FIG. 2 may be connected to the corresponding integrator 122, and the cathodes 111 in other columns are not connected to the integrator 122. . Then, the second column of cathodes 111 is connected to the corresponding integrator 122, until the last column of cathodes 111 is connected to the corresponding integrator 122.
  • the second switching unit of the driving circuit disconnects the driving circuit from the light-emitting device OLED. connection.
  • the second switching unit in the integrated circuit 12 when the second switching unit in the integrated circuit 12 connects the cathode 111 to the common ground terminal voltage signal VSS, the second switching unit can disconnect or establish a connection between the driving circuit and the light-emitting device OLED. .
  • the cathode 111 in the embedded touch display panel 1 of the present invention can be used both as a sensing mode and a pixel mode.
  • the driving circuit is disconnected from the light-emitting device OLED, and the light-emitting device OLED connected to the cathode 111 does not emit light.
  • the cathode 111 and the integrator 122 are connected through the second switching unit.
  • the integrator 122 collects the electric signal from the cathode 111, and calculates the capacitance value of the first capacitor Cf formed by the cathode 111 and the finger through the electric signal, and determines whether the cathode 111 and the finger form the first capacitor Cf, thereby determining whether the cathode 111 is at the cathode 111. Touched by fingers.
  • a plurality of cathodes 111 may be sequentially connected to corresponding integrators 122, and the position of the cathode 111 touched by a finger may be determined based on the capacitance voltage signal output by the integrator 122.
  • the first switching unit 121 connects the cathode 111 to the common ground terminal voltage signal VSS.
  • the driving circuit is connected to the light emitting device OLED through the second switching unit, the light emitting device OLED can be driven to emit light normally.
  • the embedded touch display panel 1 provided by the present invention does not need to use an external touch screen, does not increase the thickness of the touch display panel, and does not need to develop new materials when the touch display panel needs to be bent. , So it will also lower the threshold for making a touch display panel.

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Abstract

本发明提供一种嵌入式触控显示面板及其驱动方法，该嵌入式触控显示面板包括：驱动电路、发光器件、集成电路以及多个阴极；驱动电路与发光器件的信号输入端连接，用于驱动发光器件发光；阴极与发光器件的信号输出端连接，且阴极用于与感应手指形成第一电容；集成电路与阴极连接，用于接收来自阴极的电信号，计算第一电容的容值，并根据第一电容的容值判断第一电容的位置，或者将阴极接入公共接地端电压信号。可以不需要使用外挂触控屏，也不会增加触控显示面板的厚度，可以降低触控显示面板的制作门槛。

Description

一种嵌入式触控显示面板及其驱动方法
本申请要求于2018年8月17日提交中国专利局、申请号为201810938267.3、发明名称为“一种嵌入式触控显示面板及其驱动方法”的中国专利申请的优先权，上述专利的全部内容通过引用结合在本申请中。
技术领域
本发明涉及显示技术领域，尤其涉及一种嵌入式触控显示面板及其驱动方法。
背景技术
OLED(Organic Light-Emitting Diode，有机发光二极管)显示器具有色域广、对比度高、节能、可折叠性等优点，因而在新时代显示器中具有强有力的竞争力。AMOLED(Active-matrix organic light emitting diode，有源矩阵发光二极管)显示器技术是柔性显示重点发展方向之一。AMOLED显示器的基本驱动电路可为3T1C，如图1所示，即包括一个开关薄膜晶体管T1、一个驱动薄膜晶体管T2、一个使能薄膜晶体管T3和一个存储电容Cst。OLED的驱动电流由驱动薄膜晶体管T2控制，并由开关薄膜晶体管T1决定数据信号进入驱动薄膜晶体管T2的栅极，以便控制驱动薄膜晶体管T2的电流大小，而使能薄膜晶体管T3则控制电源电压信号VDD对应的电流是否流过OLED，决定OLED是否发光，而实际应用中，手机显示屏皆搭配有触控功能，目前市面上OLED显示器大部分都使用外挂触控屏，除了厚度的增加外，在弯折需求上也需开发新的材料，因此在OLED显示器的制作上会有比较高的门槛。
发明内容
为解决上述技术问题，本发明提供一种嵌入式触控显示面板及其驱动方法，可以不需要使用外挂触控屏，也不会增加触控显示面板的厚度，可以降低触控显示面板的制作门槛。
本发明提供的一种嵌入式触控显示面板，包括：驱动电路、发光器件、集成电路以及多个阴极；
所述驱动电路与所述发光器件的信号输入端连接，用于驱动所述发光器件发光；
所述阴极与所述发光器件的信号输出端连接，且所述阴极用于与感应手指形成第一电容；
所述集成电路与所述阴极连接，用于接收来自所述阴极的电信号，计算所述第一电容的容值，并根据所述第一电容的容值判断所述第一电容的位置，或者将所述阴极接入公共接地端电压信号。
优选地，所述集成电路包括第一开关单元和积分器；
所述第一开关单元的第一端与所述阴极连接，所述第一开关单元的第二端和第三端分别与所述积分器的输入端连接以及接入所述公共接地端电压信号，所述第一开关单元用于将所述阴极与所述积分器的输入端连接，或者将所述阴极接入所述公共接地端电压信号；
所述积分器，用于获取所述第一电容所述产生的电容电压信号，并将所述电容电压信号输出。
优选地，所述集成电路还包括计算判断单元；
所述计算判断单元，用于接收来自所述积分器的所述电容电压信号，并根据所述电容电压信号判断所述第一电容的容值以及所述第一电容的位置。
优选地，所述积分器包括放大器和第二电容；
所述第二电容的两端分别与所述放大器的第一输入端和输出端连接；
所述放大器的第一输入端还与所述第一开关单元的第二端连接，且所述放大器的第二输入端用于接入参考电压信号。
优选地，所述第一开关单元以及所述积分器的数量均为多个，且所述阴极与所述第一开关单元之间一一对应连接，所述第一开关单元与所述积分器之间一一对应连接。
优选地，所述驱动电路包含第一薄膜晶体管、第二薄膜晶体管、第二开关单元以及第三电容；
所述第一薄膜晶体管的漏极和栅极分别接入数据信号和开关信号，所述 第一薄膜晶体管的源极与所述第二薄膜晶体管的栅极连接；
所述第二薄膜晶体管的漏极接入电源电压信号，所述第二薄膜晶体管的源极通过所述第二开关单元与所述发光器件连接；所述第二开关单元用于控制所述第二薄膜晶体管与所述发光器件之间连接或断开；
所述第三电容的两端分别与所述第二薄膜晶体管的栅极和漏极连接。
优选地，所述驱动电路固定在柔性电路板上。
本发明还提供一种嵌入式触控显示面板，包括：驱动电路、发光器件、集成电路以及多个阴极；
所述驱动电路与所述发光器件的信号输入端连接，用于驱动所述发光器件发光；且所述驱动电路固定在柔性电路板上；
所述阴极与所述发光器件的信号输出端连接，且所述阴极用于与感应手指形成第一电容；
所述集成电路与所述阴极连接，用于接收来自所述阴极的电信号，计算所述第一电容的容值，并根据所述第一电容的容值判断所述第一电容的位置，或者将所述阴极接入公共接地端电压信号；
所述集成电路包括第一开关单元和积分器；
所述第一开关单元的第一端与所述阴极连接，所述第一开关单元的第二端和第三端分别与所述积分器的输入端连接以及接入所述公共接地端电压信号，所述第一开关单元用于将所述阴极与所述积分器的输入端连接，或者将所述阴极接入所述公共接地端电压信号；
所述积分器，用于获取所述第一电容所述产生的电容电压信号，并将所述电容电压信号输出。
优选地，所述集成电路还包括计算判断单元；
所述计算判断单元，用于接收来自所述积分器的所述电容电压信号，并根据所述电容电压信号判断所述第一电容的容值以及所述第一电容的位置。
优选地，所述积分器包括放大器和第二电容；
所述第二电容的两端分别与所述放大器的第一输入端和输出端连接；
所述放大器的第一输入端还与所述第一开关单元的第二端连接，且所述放大器的第二输入端用于接入参考电压信号。
优选地，所述第一开关单元以及所述积分器的数量均为多个，且所述阴极与所述第一开关单元之间一一对应连接，所述第一开关单元与所述积分器之间一一对应连接。
优选地，所述驱动电路包含第一薄膜晶体管、第二薄膜晶体管、第二开关单元以及第三电容；
所述第一薄膜晶体管的漏极和栅极分别接入数据信号和开关信号，所述第一薄膜晶体管的源极与所述第二薄膜晶体管的栅极连接；
所述第二薄膜晶体管的漏极接入电源电压信号，所述第二薄膜晶体管的源极通过所述第二开关单元与所述发光器件连接；所述第二开关单元用于控制所述第二薄膜晶体管与所述发光器件之间连接或断开；
所述第三电容的两端分别与所述第二薄膜晶体管的栅极和漏极连接。
本发明提供一种嵌入式触控显示面板的驱动方法，应用于嵌入式触控显示面板中，所述嵌入式触控显示面板包括：驱动电路、发光器件、集成电路以及多个阴极；
所述驱动电路与所述发光器件的信号输入端连接，用于驱动所述发光器件发光；
所述阴极与所述发光器件的信号输出端连接，且所述阴极用于与感应手指形成第一电容；
所述集成电路与所述阴极连接，用于接收来自所述阴极的电信号，计算所述第一电容的容值，并根据所述第一电容的容值判断所述第一电容的位置，或者将所述阴极接入公共接地端电压信号。
所述驱动方法包括下述步骤：
按照设定的顺序依次接收来自多个阴极的电信号，并根据所述电信号判断所述阴极与手指构成的第一电容的容值，且根据所述第一电容的容值判断所述第一电容的位置。
优选地，所述多个阴极呈阵列排布，按照设定的顺序依次接收来自多个阴极的电信号，具体为：
依次逐行或者逐列接收来自所述多个阴极的电信号。
优选地，按照设定的顺序依次接收来自所述多个阴极的电信号时，每次 只接收所述多个阴极中部分阴极的电信号，且将连接在所述部分阴极上的发光器件与对应的驱动电路之间断开连接。
实施本发明，具有如下有益效果：当手指触摸显示面板上对应的阴极时，可以与对应的阴极形成第一电容，集成电路可以接收来自该阴极的电信号，计算该第一电容的容值，进而判断该第一电容是否存在，也即是该阴极上是否有手指触摸，通过依次接收多个阴极的电信号，可以判断出有手指触摸的阴极位置。集成电路也可以将阴极接入公共接地端电压信号，让发光器件正常发光。
因此，本发明提供的嵌入式触控显示面板不需要使用外挂触控屏，不会增加触控显示面板的厚度，在需要将触控显示面板进行弯折时，也不需要开发新的材料，因此也会降低触控显示面板的制作门槛。
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，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明提供的AMOLED显示器的驱动电路图。
图2是本发明提供的多个阴极与集成电路之间的连接示意图。
图3是本发明提供的一实施例中驱动电路和集成电路的示意图。
图4是本发明提供的集成电路的原理框图。
图5是本发明提供的集成电路采集来自阴极的电信号的示意图。
图6是本发明提供的集成电路用于将阴极接入公共接地端电压的第一示意图。
图7是本发明提供的集成电路用于将阴极接入公共接地端电压的第二示意图。
具体实施方式
本发明提供一种嵌入式触控显示面板，如图2所示该嵌入式触控显示面板1包括集成电路12以及多个阴极111，还包括如图3所示的驱动电路、发 光器件OLED(Organic Light-Emitting Diode，有机发光二极管)。一般地，嵌入式触控显示面板1还包含有接地电极。
驱动电路与发光器件OLED的信号输入端连接，用于驱动发光器件OLED发光。
阴极111与发光器件OLED的信号输出端连接，且阴极111用于与感应手指形成第一电容Cf，阴极111还与接地电极形成第四电容Cg。
如图3和4所示，集成电路12通过连接线13与阴极111电性连接，用于接收来自阴极111的电信号，计算第一电容Cf的容值，并根据第一电容Cf的容值判断第一电容Cf的位置，或者将阴极111接入公共接地端电压信号VSS。所有的阴极111均位于嵌入式触控显示面板1的有效显示区11内且呈阵列排布。第四电容Cg不能太大，否则第四电容Cg会产生的信号会对计算第一电容Cf的容值造成影响。
进一步地，集成电路12包括第一开关单元121和积分器122。
第一开关单元121的第一端与阴极111连接，第一开关单元121的第二端和第三端分别与积分器122的输入端连接以及接入公共接地端电压信号VSS，第一开关单元121用于将阴极111与积分器122的输入端连接，或者将阴极111接入公共接地端电压信号VSS。
这里，第一开关单元121可以是两个开关管，每一个阴极111可以通过两个开关管分别与积分器122连接以及接入公共接地端电压信号VSS。当其中一个开关管接通，则另一个开关管断开。
积分器122用于获取第一电容Cf产生的电容电压信号，并将电容电压信号输出。
进一步地，集成电路12还包括计算判断单元123。计算判断单元123用于接收来自积分器122的电容电压信号，并根据电容电压信号判断第一电容Cf的容值以及第一电容Cf的位置。
进一步地，积分器122包括放大器和第二电容Cfb。第二电容Cfb的两端分别与放大器的第一输入端和输出端连接。放大器的第一输入端还与第一开关单元121的第二端连接，且放大器的第二输入端用于接入参考电压信号。第二电容Cfb用于积累来自阴极111的电荷，形成电压。放大器用于将第二 电容Cfb两端的电压与参考电压信号进行比较，得到电容电压信号并输出。
进一步地，第一开关单元121以及积分器122的数量均为多个，且阴极111与第一开关单元121之间一一对应连接，第一开关单元121与积分器122之间一一对应连接。
进一步地，驱动电路包含第一薄膜晶体管T1、第二薄膜晶体管T2、第二开关单元以及第三电容Cst。这里第二开关单元可以是一个开关管(例如图3中的第三薄膜晶体管T3)，通过给该开关管输入使能信号，控制该开关管接通或断开。
第一薄膜晶体管T1的漏极和栅极分别接入数据信号和开关信号，第一薄膜晶体管T1的源极与第二薄膜晶体管T2的栅极连接。开关信号控制第一薄膜晶体管T1导通或者断开。
第二薄膜晶体管T2的漏极接入电源电压信号VDD，第二薄膜晶体管T2的源极通过第二开关单元与发光器件OLED连接；第二开关单元用于控制第二薄膜晶体管T2与发光器件OLED之间连接或断开。
第三电容Cst的两端分别与第二薄膜晶体管T2的栅极和漏极连接。
进一步地，驱动电路固定在柔性电路板上。
本发明还提供一种嵌入式触控显示面板1的驱动方法，该方法应用于上述的嵌入式触控显示面板1中，其包括下述步骤：
按照设定的顺序依次接收来自多个阴极111的电信号，并根据电信号判断阴极111与手指构成的第一电容Cf的容值，且根据第一电容Cf的容值判断第一电容Cf的位置。
进一步地，多个阴极111呈阵列排布，按照设定的顺序依次接收来自多个阴极111的电信号，具体为：
依次逐行或者逐列接收来自多个阴极111的电信号。
例如可以参考图2，在依次逐行接收来自多个阴极111的电信号时，可以先将图2中的第一行阴极111与集成电路12中的积分器122建立连接，而其他行的阴极111则不与对应的积分器122连接，与第一行阴极111对应的积分器122可以接收来自第一行阴极111的电信号。然后，将第二行阴极111与对应的积分器122建立连接，而其他行的阴极111则不与对应的积分 器122连接，直至将最后一行阴极111与对应的积分器122建立连接。
同理，依次逐列接收来自多个阴极111的电信号时，可以先将图2中的第一列阴极111与对应的积分器122建立连接，其他列的阴极111则不与积分器122连接。然后，再将第二列阴极111与对应的积分器122建立连接，直至将最后一列阴极111与对应的积分器122建立连接。
进一步地，按照设定的顺序依次接收来自多个阴极111的电信号时，每次只接收多个阴极中部分阴极的电信号，且将连接在该部分阴极111上的发光器件OLED与对应的驱动电路之间断开连接。
例如，如图5所示，当集成电路12中的第一开关单元121将阴极111与积分器122之间建立连接时，驱动电路的第二开关单元就将驱动电路与发光器件OLED之间断开连接。
如图6和7所示，当集成电路12中的第二开关单元将阴极111接入公共接地端电压信号VSS时，第二开关单元可以将驱动电路与发光器件OLED之间断开连接或者建立连接。
本发明嵌入式触控显示面板1中的阴极111既可以作为感应模式使用，又可以作为像素模式使用。当阴极111作为感应模式使用时，驱动电路断开与发光器件OLED的连接，与该阴极111连接的发光器件OLED不发光，同时通过第二开关单元将该阴极111与积分器122建立连接，通过积分器122采集来自阴极111的电信号，通过电信号计算阴极111与手指形成第一电容Cf的容值，判断该阴极111与手指是否有形成第一电容Cf，从而可以判断该阴极111处是否有手指触摸。并且，可以将多个阴极111依次与对应的积分器122连接，通过积分器122输出的电容电压信号判断有手指触摸的阴极111的位置。
当阴极111作为像素模式使用时，第一开关单元121将阴极111接入公共接地端电压信号VSS，当驱动电路通过第二开关单元与发光器件OLED连接时，可以驱动发光器件OLED正常发光。
因此，本发明提供的嵌入式触控显示面板1不需要使用外挂触控屏，不会增加触控显示面板的厚度，在需要将触控显示面板进行弯折时，也不需要开发新的材料，因此也会降低触控显示面板的制作门槛。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。

Claims (15)

  1. 一种嵌入式触控显示面板，其中，包括：驱动电路、发光器件、集成电路以及多个阴极；
    所述驱动电路与所述发光器件的信号输入端连接，用于驱动所述发光器件发光；
    所述阴极与所述发光器件的信号输出端连接，且所述阴极用于与感应手指形成第一电容；
    所述集成电路与所述阴极连接，用于接收来自所述阴极的电信号，计算所述第一电容的容值，并根据所述第一电容的容值判断所述第一电容的位置，或者将所述阴极接入公共接地端电压信号。
  2. 根据权利要求1所述的嵌入式触控显示面板，其中，所述集成电路包括第一开关单元和积分器；
    所述第一开关单元的第一端与所述阴极连接，所述第一开关单元的第二端和第三端分别与所述积分器的输入端连接以及接入所述公共接地端电压信号，所述第一开关单元用于将所述阴极与所述积分器的输入端连接，或者将所述阴极接入所述公共接地端电压信号；
    所述积分器，用于获取所述第一电容所述产生的电容电压信号，并将所述电容电压信号输出。
  3. 根据权利要求2所述的嵌入式触控显示面板，其中，所述集成电路还包括计算判断单元；
    所述计算判断单元，用于接收来自所述积分器的所述电容电压信号，并根据所述电容电压信号判断所述第一电容的容值以及所述第一电容的位置。
  4. 根据权利要求2所述的嵌入式触控显示面板，其中，所述积分器包括放大器和第二电容；
    所述第二电容的两端分别与所述放大器的第一输入端和输出端连接；
    所述放大器的第一输入端还与所述第一开关单元的第二端连接，且所述放大器的第二输入端用于接入参考电压信号。
  5. 根据权利要求2所述的嵌入式触控显示面板，其中，所述第一开关 单元以及所述积分器的数量均为多个，且所述阴极与所述第一开关单元之间一一对应连接，所述第一开关单元与所述积分器之间一一对应连接。
  6. 根据权利要求1所述的嵌入式触控显示面板，其中，所述驱动电路包含第一薄膜晶体管、第二薄膜晶体管、第二开关单元以及第三电容；
    所述第一薄膜晶体管的漏极和栅极分别接入数据信号和开关信号，所述第一薄膜晶体管的源极与所述第二薄膜晶体管的栅极连接；
    所述第二薄膜晶体管的漏极接入电源电压信号，所述第二薄膜晶体管的源极通过所述第二开关单元与所述发光器件连接；所述第二开关单元用于控制所述第二薄膜晶体管与所述发光器件之间连接或断开；
    所述第三电容的两端分别与所述第二薄膜晶体管的栅极和漏极连接。
  7. 根据权利要求1所述的嵌入式触控显示面板，其中，所述驱动电路固定在柔性电路板上。
  8. 一种嵌入式触控显示面板，其中，包括：驱动电路、发光器件、集成电路以及多个阴极；
    所述驱动电路与所述发光器件的信号输入端连接，用于驱动所述发光器件发光；且所述驱动电路固定在柔性电路板上；
    所述阴极与所述发光器件的信号输出端连接，且所述阴极用于与感应手指形成第一电容；
    所述集成电路与所述阴极连接，用于接收来自所述阴极的电信号，计算所述第一电容的容值，并根据所述第一电容的容值判断所述第一电容的位置，或者将所述阴极接入公共接地端电压信号；
    所述集成电路包括第一开关单元和积分器；
    所述第一开关单元的第一端与所述阴极连接，所述第一开关单元的第二端和第三端分别与所述积分器的输入端连接以及接入所述公共接地端电压信号，所述第一开关单元用于将所述阴极与所述积分器的输入端连接，或者将所述阴极接入所述公共接地端电压信号；
    所述积分器，用于获取所述第一电容所述产生的电容电压信号，并将所述电容电压信号输出。
  9. 根据权利要求8所述的嵌入式触控显示面板，其中，所述集成电路 还包括计算判断单元；
    所述计算判断单元，用于接收来自所述积分器的所述电容电压信号，并根据所述电容电压信号判断所述第一电容的容值以及所述第一电容的位置。
  10. 根据权利要求8所述的嵌入式触控显示面板，其中，所述积分器包括放大器和第二电容；
    所述第二电容的两端分别与所述放大器的第一输入端和输出端连接；
    所述放大器的第一输入端还与所述第一开关单元的第二端连接，且所述放大器的第二输入端用于接入参考电压信号。
  11. 根据权利要求8所述的嵌入式触控显示面板，其中，所述第一开关单元以及所述积分器的数量均为多个，且所述阴极与所述第一开关单元之间一一对应连接，所述第一开关单元与所述积分器之间一一对应连接。
  12. 根据权利要求8所述的嵌入式触控显示面板，其中，所述驱动电路包含第一薄膜晶体管、第二薄膜晶体管、第二开关单元以及第三电容；
    所述第一薄膜晶体管的漏极和栅极分别接入数据信号和开关信号，所述第一薄膜晶体管的源极与所述第二薄膜晶体管的栅极连接；
    所述第二薄膜晶体管的漏极接入电源电压信号，所述第二薄膜晶体管的源极通过所述第二开关单元与所述发光器件连接；所述第二开关单元用于控制所述第二薄膜晶体管与所述发光器件之间连接或断开；
    所述第三电容的两端分别与所述第二薄膜晶体管的栅极和漏极连接。
  13. 一种嵌入式触控显示面板的驱动方法，其中，应用于嵌入式触控显示面板中，所述嵌入式触控显示面板包括：驱动电路、发光器件、集成电路以及多个阴极；
    所述驱动电路与所述发光器件的信号输入端连接，用于驱动所述发光器件发光；
    所述阴极与所述发光器件的信号输出端连接，且所述阴极用于与感应手指形成第一电容；
    所述集成电路与所述阴极连接，用于接收来自所述阴极的电信号，计算所述第一电容的容值，并根据所述第一电容的容值判断所述第一电容的位置，或者将所述阴极接入公共接地端电压信号。
    所述驱动方法包括下述步骤：
    按照设定的顺序依次接收来自多个阴极的电信号，并根据所述电信号判断所述阴极与手指构成的第一电容的容值，且根据所述第一电容的容值判断所述第一电容的位置。
  14. 根据权利要求13所述的嵌入式触控显示面板的驱动方法，其中，所述多个阴极呈阵列排布，按照设定的顺序依次接收来自多个阴极的电信号，具体为：
    依次逐行或者逐列接收来自所述多个阴极的电信号。
  15. 根据权利要求13所述的嵌入式触控显示面板的驱动方法，其中，按照设定的顺序依次接收来自所述多个阴极的电信号时，每次只接收所述多个阴极中部分阴极的电信号，且将连接在所述部分阴极上的发光器件与对应的驱动电路之间断开连接。
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