WO2019227667A1 - 触控显示面板 - Google Patents

触控显示面板 Download PDF

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Publication number
WO2019227667A1
WO2019227667A1 PCT/CN2018/099237 CN2018099237W WO2019227667A1 WO 2019227667 A1 WO2019227667 A1 WO 2019227667A1 CN 2018099237 W CN2018099237 W CN 2018099237W WO 2019227667 A1 WO2019227667 A1 WO 2019227667A1
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WO
WIPO (PCT)
Prior art keywords
touch
signal line
touch sensing
display panel
sensing areas
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Application number
PCT/CN2018/099237
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English (en)
French (fr)
Inventor
陈彩琴
Original Assignee
武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US16/307,153 priority Critical patent/US20190369768A1/en
Publication of WO2019227667A1 publication Critical patent/WO2019227667A1/zh

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/805—Electrodes
    • H10K50/82—Cathodes
    • 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
    • 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; CALCULATING OR 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 invention relates to the field of liquid crystal display, and in particular to a touch display panel.
  • OLED Organic light-emitting diode
  • LCD liquid crystal display
  • each pixel adopts an autonomous light-emitting mode instead of a unified backlight mode, it has a significantly increased viewing angle and reduced power consumption. , Improved contrast, thinner screen thickness, fast response time, high luminous efficiency, etc.
  • the touch screen function has become one of the main forms of modern input methods. In portable electronic products such as mobile phones, tablet computers, and e-books, it has gradually replaced the traditional mechanical key input method, and will eventually achieve a full-touch, no-key input mode. Integrating the touch function into a display device is a current advanced technology trend.
  • Touch screens can be divided into external touch screens, overlay surface touch screens, and embedded touch screens according to their composition.
  • the external touch screen is produced separately from the touch screen and the LCD screen, and then bonded together to form a touch screen LCD screen.
  • External touch screens have disadvantages such as higher production cost, lower light transmittance, and thicker modules.
  • the in-cell touch screen embeds the touch electrodes of the touch screen inside the liquid crystal display, which can not only reduce the overall thickness of the module, but also greatly reduce the manufacturing cost of the touch screen. Therefore, it is favored by major panel manufacturers.
  • An object of the embodiments of the present invention is to provide a touch display panel with the beneficial effect of embedding a touch sensing circuit to reduce the thickness of the panel.
  • the present invention provides a touch display panel, including:
  • the metal layer forms a plurality of spaced touch sensing areas
  • the cathode layer includes a plurality of spaced-apart cathode regions, and the cathode regions correspond to the touch-sensing regions on a one-to-one basis; the vertical projection of the cathode region on the metal layer is located in the corresponding touch region Inside;
  • the touch sensing area is a self-capacitive sensing area, and each of the touch sensing areas is connected to the touch driving chip through an independent second signal line;
  • the plurality of touch sensing areas include a plurality of transmitting touch sensing areas and a plurality of receiving touch sensing areas;
  • the plurality of emitting touch sensing areas are distributed in a rectangular array
  • the plurality of receiving touch sensing areas are distributed in a rectangular array
  • the plurality of transmitting touch-sensing regions and the plurality of receiving touch-sensing regions intersect in a column direction.
  • each of the touch sensing areas includes a plurality of first signal lines that are crisscrossed and electrically connected.
  • the first signal line is a data signal line or a reset signal line
  • the second signal line is a data signal line or a reset signal line
  • the touch sensing area has a circular shape, a rectangular shape, or a prism shape; both ends of each of the first signal lines extend to the edge of the touch sensing area. .
  • the plurality of touch sensing areas are distributed in a rectangular array.
  • the receiving touch sensing areas in the same row are electrically isolated, and the transmitting touch sensing areas in the same row are electrically connected; the receiving touch sensing areas in the same row are electrically isolated. They are electrically connected by metal cross-over wires.
  • Each row of touch sensing areas is connected to the touch emitting chip through a second signal line, and the receiving touch areas in the same column are connected to the touch receiving chip using a signal line.
  • the first signal line is a data signal line or a reset signal line
  • the second signal line is a data signal line or a reset signal line
  • the present invention also provides a touch display panel, including:
  • the metal layer forms a plurality of spaced touch sensing areas
  • the cathode layer includes a plurality of spaced-apart cathode regions, and the cathode regions correspond to the touch-sensing regions on a one-to-one basis; the vertical projection of the cathode region on the metal layer is located in the corresponding touch region Inside.
  • the touch sensing area is a self-capacitive sensing area, and each of the touch sensing areas is connected to the touch driving chip through an independent second signal line.
  • each of the touch sensing areas includes a plurality of first signal lines that are crisscrossed and electrically connected.
  • the first signal line is a data signal line or a reset signal line
  • the second signal line is a data signal line or a reset signal line
  • the touch sensing area has a circular shape, a rectangular shape, or a prism shape; both ends of each of the first signal lines extend to the edge of the touch sensing area. .
  • the plurality of touch sensing areas are distributed in a rectangular array.
  • the plurality of touch sensing areas include a plurality of transmitting touch sensing areas and a plurality of receiving touch sensing areas;
  • the plurality of emitting touch sensing areas are distributed in a rectangular array
  • the plurality of receiving touch sensing areas are distributed in a rectangular array
  • the plurality of transmitting touch-sensing regions and the plurality of receiving touch-sensing regions intersect in a column direction.
  • the receiving touch sensing areas in the same row are electrically isolated, and the transmitting touch sensing areas in the same row are electrically connected; the receiving touch sensing areas in the same row are electrically isolated. They are electrically connected by metal cross-over wires.
  • Each row of touch sensing areas is connected to the touch emitting chip through a second signal line, and the receiving touch areas in the same column are connected to the touch receiving chip using a signal line.
  • the first signal line is a data signal line or a reset signal line
  • the second signal line is a data signal line or a reset signal line
  • the present invention realizes the touch sensing method of INCELL by arranging the touch sensing structure inside the touch display panel and exposing the touch sensing structure by means of graphic processing of the cathode layer.
  • the thickness of the touch-sensitive panel can be reduced.
  • FIG. 1 is a schematic structural diagram of a touch display panel in some embodiments of the present invention.
  • FIG. 2 is a diagram of a mutually compatible touch topology of a touch display panel according to an embodiment of the present invention.
  • FIG. 3 is a structural diagram of a corresponding cathode layer of the touch display panel in the embodiment shown in FIG. 2 of the present invention.
  • FIG. 4 is a self-capacitive touch topology diagram of a touch display panel according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram of a corresponding cathode layer of the touch display panel in the embodiment shown in FIG. 4 of the present invention.
  • FIG. 6 is a structural diagram of a display circuit of a touch display panel in the present invention.
  • FIG. 7 is a driving timing diagram of the touch display panel in the present invention when the touch sensing area is compatible.
  • FIG. 8 is a driving timing diagram of the touch display panel in the present invention when the touch sensing area is self-capacitive.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality” is two or more, unless specifically defined otherwise.
  • the "first” or “lower” of the first feature may include the first and second features in direct contact, and may also include the first and second features. Not directly, but through another characteristic contact between them.
  • the first feature is “above”, “above”, and “above” the second feature, including that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature is higher in level than the second feature.
  • the first feature is “below”, “below”, and “below” of the second feature, including the fact that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature is less horizontal than the second feature.
  • FIG. 1 is a touch display panel in some embodiments of the present invention, including: an array substrate 10, and a metal layer 20a / 20b, a light emitting layer 30, and a cathode layer disposed on the array substrate 10 in this order. 40 and a protective layer 50 on the cathode layer 40.
  • the touch display panel as an OLED display panel, has a structure for realizing its basic functions, such as an anode layer, which is not the focus of the present invention and will not be described too much.
  • a hole transport layer 32 and a hole injection layer 33 are further disposed below the light emitting layer 30, and an electron transport layer 31 is further provided between the light emitting layer 30 and the cathode layer 40.
  • one of the metal layers 20a / 20b forms a plurality of spaced-apart touch sensing areas 21;
  • the cathode layer 30 includes a plurality of spaced-apart cathode areas, and the plurality of cathode areas and the plurality of touch-sensitive areas 21 One corresponding; the vertical projection of the cathode region on the metal layers 20a / 20b is located in the corresponding touch sensing region 21.
  • the touch sensing area 21 forms a touch sensing structure, and the touch sensing structure is used to form a self-capacitive or mutual-capacitance capacitive structure to detect a pressing position of a finger on the touch display panel.
  • the touch sensing area 21 is a mutual-capacitive touch sensing area, and correspondingly, the touch-sensing structure is a mutual-capacitance touch-sensitive structure.
  • the plurality of touch sensing areas 21 include a plurality of transmitting touch sensing areas 21 b and a plurality of receiving touch sensing areas 21 a.
  • the plurality of transmitting touch sensing areas 21b are distributed in a rectangular array; the plurality of receiving touch sensing areas 21a are distributed in a rectangular array.
  • the multiple touch-sensing areas 21b and the multiple touch-sensing areas 21a intersect in a column direction, that is, one row of touch-sensing areas 21b is alternately distributed in one row, and the touch-sensing areas are alternately distributed.
  • the control sensing area 21b is staggered from the touch sensing area 21a.
  • each touch sensing structure is formed by a plurality of crisscrossed and connected first signal lines, that is, a plurality of crisscrossed and connected first signal lines 211 are formed in one touch sensing area 21. Both ends of each first signal line 211 extend to the edge of the touch sensing area 21.
  • the receiving touch sensing areas in the same row are electrically isolated, and the transmitting touch sensing areas in the same row are electrically connected.
  • the receiving touch sensing areas of the same column are electrically connected through a metal cross line 213, and the transmitting touch sensing areas of each row are connected to the touch transmitting chip through a second signal line 212, respectively, and the receiving touch sensing areas of each column are respectively connected through a signal line.
  • TX gives high-frequency timing signals to drive a row of TX signals
  • RX receives high-frequency AC signals through capacitors (TX and The signal after induction capacitance is formed between RX).
  • TX gives high-frequency timing signals to drive a row of TX signals
  • RX receives high-frequency AC signals through capacitors (TX and The signal after induction capacitance is formed between RX).
  • TX gives high-frequency timing signals to drive a row of TX signals
  • RX receives high-frequency AC signals through capacitors (TX and The signal after induction capacitance is formed between RX).
  • TX When touching, the finger changes the capacitance between TX and RX, thus changing the size of the signal received by TX in a certain time period.
  • the chip's logic operation is used to analyze the touch position of the finger. .
  • the metal layer 20a / 20b may be a metal layer where the source and drain are located in the array substrate, a metal layer where the gate is located, or a metal layer between the two.
  • the first signal line 211 is a multiplexed function line. On the one hand, it serves as a data signal line of the touch display panel, that is, a VDD line. On the other hand, it also forms a touch sensing structure of a touch sensing area. In other words, the first signal line 211 is a multiplexed function line. On the one hand, it serves as a reset signal line of the touch display panel, that is, the Vi line. On the other hand, it also forms a touch sensing structure of a touch sensing area.
  • the second signal line 212 is also a multiplexed function line, which may be a VDD line or a VI line.
  • the crossover line that receives the touch sensing area across the transmitting touch sensing area uses the other metal layer to avoid short circuits and short circuits in the Trace line trace and other touch sensing structures in other touch sensing areas.
  • the Vdd trace uses SD Metal layer
  • horizontal crossover line can use GE1 metal layer, GE2 metal layer, Anode metal layer, etc.
  • TX signal line can be fed by chip or GOA drive circuit.
  • each cathode region 31 is circular, rectangular or prismatic.
  • each cathode region 31 also has a circular shape, a rectangular shape, or a prism shape, but the area is smaller than or equal to the corresponding touch sensing area 21.
  • the multiple cathode regions are formed by first forming a metal layer, and then patterning (exposing, developing, and etching) the metal layer to form a plurality of spaced-apart cathode regions 31.
  • the touch sensing area 21 is a self-capacitive touch sensing area, and correspondingly, the touch sensing structure is a self-capacitive touch sensing structure.
  • Each touch sensing area 21 is connected to the touch driving chip through an independent second signal line 215.
  • a plurality of crisscrossed and electrically connected first signal lines 211 are formed in the touch sensing area 21, and the plurality of crisscrossed and electrically connected first signal lines 211 form a touch sensing structure. Both ends of the first signal line 211 of each touch sensing area 21 extend to an edge of the touch sensing area 21.
  • the multiple touch sensing areas are distributed in a rectangular array with a uniform interval.
  • the Trace line gives high-frequency timing signals. When driving a single touch-sensing structure, this touch-sensing structure gives high-frequency signals.
  • the surrounding touch-sensing structures input low-level driving signals according to the timing.
  • the driven touch sensing structure and the surrounding touch sensing structure form a capacitor, and at the same time Trace Line receives the feedback signal from the touch sensing structure, and analyzes the touch position of the finger through logic operation of the chip.
  • the first signal line 211 is a multiplexed function line.
  • the first signal line 211 is a data signal line of the touch display panel, that is, a VDD line.
  • the first signal line 211 also forms a touch in the touch sensing area. Induction structure.
  • the first signal line 211 is a multiplexed function line.
  • it serves as a reset signal line of the touch display panel, that is, the Vi line.
  • it also forms a touch sensing structure of a touch sensing area.
  • the second signal line 215 is also a multiplexed function line, which may be a VDD line or a VI line.
  • each cathode area 31 is also round, rectangular, or prismatic, but the area is smaller than or equal to the corresponding touch sensing area. twenty one.
  • the multiple cathode regions are formed by first forming a metal layer, and then patterning (exposing, developing, and etching) the metal layer to form a plurality of spaced-apart cathode regions 31.
  • the distribution of each cathode region 31 corresponds to the distribution of the touch sensing region 21. Trace line runs across non-self-touch sensing structures, and other layers of metal are needed to avoid traces. The line trace is shorted with other touch sensing structures.
  • FIG. 6 is a structural diagram of a display circuit of a touch display panel according to an embodiment of the present invention. It is a typical 7T1C (including 7 TFTs and a capacitor) driving circuit. In other embodiments, it can also be other types of driving circuits, such as 6T1C, 7T2C and other circuits. This embodiment exemplifies how to multiplex a VDD signal line or a VI signal line.
  • FIG. 7 is a driving timing diagram of the touch display panel in the present invention when the touch sensing area is mutually compatible.
  • n are all given to high-level signals, and T5 and T6 in all pixels are turned off at the same time ; Vdd routing at this time: TX (input high-frequency timing signal), RX (receive signal, access to touch sensor chip), Dummy (connect to touch sensor chip, input Vss signal or r other low-level signal); cathode
  • TX input high-frequency timing signal
  • RX receiverive signal, access to touch sensor chip
  • Dummy connect to touch sensor chip, input Vss signal or r other low-level signal
  • cathode The signal remains the same as the display phase. In the display phase, it is composed of Vdd traces: TX, RX, Dummy, and the same signal of about 4.5V is input at the same time; at the same time, the Scan timing, XScan timing, and EM timing are all pulled up or down.
  • XScan, Scan, EM GOA Add a Reset unit inside, and input the output signal to the high or low bit at the same
  • FIG. 8 is a driving timing diagram of the touch display panel in the present invention when the touch sensing area is self-capacitive.
  • the driving signal in the working phase Take the PMOS device as an example.
  • Scan timing signals n 1,2, ... n, all to high-order signals, all T1, T2, T3, T4 in all pixels are turned off at the same time;
  • EM timing signals n 1,2, ...
  • the present invention realizes the touch sensing method of INCELL by arranging the touch sensing structure inside the touch display panel and exposing the touch sensing structure by means of graphic processing of the cathode layer.
  • the thickness of the touch-sensitive panel can be reduced.

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  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Position Input By Displaying (AREA)

Abstract

本发明提供了一种触控显示面板，包括：阵列基板、金属层、发光层以及阴极层；金属层形成多个间隔分布的触控感应区域；阴极层包括多个间隔分布的阴极区域，多个阴极区域与多个触控感应区域一一对应；阴极区域在金属层上的垂直投影位于对应的触控区域内。

Description

触控显示面板 技术领域
本发明涉及液晶显示领域，具体涉及一种触控显示面板。
 背景技术
有机发光二极管（OLED）显示技术作为极具发展潜力的显示技术，与液晶显示（LCD）技术相比，由于采用各像素自主发光模式取代统一背光模式，因而具有可视角显著增大、功耗降低、对比度提高、屏幕厚度减薄、响应时间快，发光效率高等优点。
触摸屏功能已经成为现代输入方式的主要形式之一，在手机、平板计算机、电子书等便携式电子产品中，已经逐渐取代传统的机械按键输入方式，并且最终将实现全触摸无按键的输入模式。将触摸功能整合到显示装置中是目前的先进技术趋势。
触摸屏按照组成结构可以分为：外挂式触摸屏、覆盖表面式触摸屏以及内嵌式触摸屏。其中，外挂式触摸屏是将触摸屏与液晶显示屏分开生产,然后贴合到一起从而形成具有触摸功能的液晶显示屏。外挂式触摸屏存在制作成本较高、光透过率较低、模组较厚等缺点。而内嵌式触摸屏将触摸屏的触控电极内嵌在液晶显示屏内部，不仅可以减薄模组整体的厚度，还可以大大降低触摸屏的制作成本，因而受到各大面板厂商的青睐。
但是现有技术中，有机发光二极管（OLED）显示器上，由于其阴极层为一个整版的金属层，使得触摸感应电路无法实现内嵌。
因此，现有技术存在缺陷，急需改进。
 技术问题
本发明实施例的目的是提供一种触控显示面板，具有实现触摸感应电路内嵌从而减小面板厚度的有益效果。
 技术解决方案
本发明提供了一种触控显示面板，包括：
阵列基板，及依次设置于该阵列基板上的金属层、发光层以及阴极层；
该金属层形成多个间隔分布的触控感应区域；
该阴极层包括多个间隔分布的阴极区域，该多个阴极区域与该多个触控感应区域一一对应；所述阴极区域在所述金属层上的垂直投影位于对应的所述触控区域内；
其中，该触控感应区域为自容性感应区域，每一所述触控感应区域通过一独立的第二信号线与触控驱动芯片连接；
所述多个触控感应区域包括多个发射触控感应区域和多个接收触控感应区域；
该多个发射触控感应区域呈矩形阵列分布；
该多个接收触控感应区域呈矩形阵列分布；
该多个发射触控感应区域与该多个接收触控感应区域在列方向上交差分布。
在本发明所述的触控显示面板中，每一所述触控感应区域包括多条纵横交错且电连接的第一信号线。
在本发明所述的触控显示面板中，所述第一信号线为数据信号线或复位信号线，所述第二信号线为数据信号线或复位信号线。
在本发明所述的触控显示面板中，所述触控感应区域呈圆形状、矩形状或棱形状；每一所述第一信号线的两端均延伸至所述触控感应区域的边缘。
在本发明所述的触控显示面板中，所述多个触控感应区域呈矩形阵列分布。
在本发明所述的触控显示面板中，同一行的接收触控感应区域之间是电隔离的，同一行的发射触控感应区域之间是电连接的；同一列的接收触控感应区域之间通过金属跨线电连接，各行发射触控感应区域分别通过一条第二信号线与触控发射芯片连接，同一列的接收触控区域功用一条信号线来与触控接收芯片连接。
在本发明所述的触控显示面板中，所述第一信号线为数据信号线或复位信号线，所述第二信号线为数据信号线或复位信号线。
本发明还提供了一种触控显示面板，包括：
阵列基板，及依次设置于该阵列基板上的金属层、发光层以及阴极层；
该金属层形成多个间隔分布的触控感应区域；
该阴极层包括多个间隔分布的阴极区域，该多个阴极区域与该多个触控感应区域一一对应；所述阴极区域在所述金属层上的垂直投影位于对应的所述触控区域内。
在本发明所述的触控显示面板中，该触控感应区域为自容性感应区域，每一所述触控感应区域通过一独立的第二信号线与触控驱动芯片连接。
在本发明所述的触控显示面板中，每一所述触控感应区域包括多条纵横交错且电连接的第一信号线。
在本发明所述的触控显示面板中，所述第一信号线为数据信号线或复位信号线，所述第二信号线为数据信号线或复位信号线。
在本发明所述的触控显示面板中，所述触控感应区域呈圆形状、矩形状或棱形状；每一所述第一信号线的两端均延伸至所述触控感应区域的边缘。
在本发明所述的触控显示面板中，所述多个触控感应区域呈矩形阵列分布。
在本发明所述的触控显示面板中，所述多个触控感应区域包括多个发射触控感应区域和多个接收触控感应区域；
该多个发射触控感应区域呈矩形阵列分布；
该多个接收触控感应区域呈矩形阵列分布；
该多个发射触控感应区域与该多个接收触控感应区域在列方向上交差分布。
在本发明所述的触控显示面板中，同一行的接收触控感应区域之间是电隔离的，同一行的发射触控感应区域之间是电连接的；同一列的接收触控感应区域之间通过金属跨线电连接，各行发射触控感应区域分别通过一条第二信号线与触控发射芯片连接，同一列的接收触控区域功用一条信号线来与触控接收芯片连接。
在本发明所述的触控显示面板中，所述第一信号线为数据信号线或复位信号线，所述第二信号线为数据信号线或复位信号线。
 有益效果
由上可知，本发明通过将触控感应结构设置在该触控显示面板的内部，并采用对阴极层进行图形化处理的方式将触控感应结构露出，从而实现了INCELL的触控感应方式，可以减小触控感应面板的厚度。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例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，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明一些实施例中的触控显示面板的结构示意图。
图2为本发明实施例中的触控显示面板的互容性的触控拓扑结构图。
图3为本发明图2所示实施例中的触控显示面板的对应的阴极层的结构图。
图4为本发明实施例中的触控显示面板的自容性的触控拓扑结构图。
图5为本发明图4所示实施例中的触控显示面板的对应的阴极层的结构图。
图6为本发明中的触控显示面板的显示电路的结构图。
图7为本发明中触控显示面板在该触控感应区域为互容性时的驱动时序图。
图8为本发明中触控显示面板在该触控感应区域为自容性时的驱动时序图。
 本发明的最佳实施方式
下面详细描述本发明的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接或可以相互通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本发明。此外，本发明可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本发明提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
请参阅图1，图1是本发明一些实施例中的一种触控显示面板，包括：阵列基板10、及依次设置于该阵列基板10上的金属层20a/20b、发光层30、阴极层40以及位于阴极层40之上的保护层50。当然，可以理解地，该触控显示面板作为OLED显示面板，其具有的用于实现其基本功能的结构是必不可少的，例如阳极层等，其不是本发明的重点不作过多描述。该发光层30下方还设置有空穴传输层32以及空穴注入层33，该发光层30与该阴极层40之间还设置有电子传输层31。
其中，该金属层20a/20b之一形成多个间隔分布的触控感应区域21；该阴极层30包括多个间隔分布的阴极区域，该多个阴极区域与该多个触控感应区域21一一对应；该阴极区域在金属层20a/20b上的垂直投影位于对应的触控感应区域21。其中，该触控感应区域21形成触控感应结构，该触控感应结构用于形成自容性或者互容性电容结构，以检测手指在触控显示面板上的按压位置。
在一些实施例中，请参照图2，该触控感应区域21为互容性式触控感应区域，对应地，该触控感应结构为互容性是触控感应结构。其中，该多个触控感应区域21包括多个发射触控感应区域21b和多个接收触控感应区域21a。其中，该多个发射触控感应区域21b呈矩形阵列分布；该多个接收触控感应区域21a呈矩形阵列分布。该多个发射触控感应区域21b与该多个接收触控感应区域21a在列方向上交差分布，也即是一行发射触控感应区域21b一行接收触控感应区域21a这样交替分布，且发射触控感应区域21b与接收触控感应区域21a错开。
具体地，每一触控感应结构由多条纵横交错且连接的第一信号线形成，也即是说，在一个触控感应区域21内形成有多条纵横交错且连接的第一信号线211，每一第一信号线211的两端均延伸至该触控感应区域21的边缘。且，同一行的接收触控感应区域之间是电隔离的，同一行的发射触控感应区域之间是电连接的。同一列的接收触控感应区域之间通过金属跨线213电连接，各行发射触控感应区域分别通过一条第二信号线212与触控发射芯片连接，各列接收触控区域分别通过一条信号线与触控接收芯片连接，同一列的接收触控区域功用一条信号线来与触控接收芯片的一个引脚连接。互电容的工作原理：触控感应工作时段，以横向的TX、纵向的RX为例，TX给出高频的时序信号，驱动某行TX信号；RX接收从高频交流信号通过电容（TX和RX之间形成感应电容）后的信号，当接触时，手指改变了TX和RX之间的电容，从而改变了某时序段TX接收到的信号大小，通过芯片逻辑运算，分析出手指触控位置。
可以理解地，该金属层20a/20b可以为阵列基板中源漏极所在的金属层、栅极所在的金属层、或者这两者之间的金属层。该第一信号线211为复用功能线，一方面其作为该触控显示面板的数据信号线也即是VDD线，一方面其还形成了触控感应区域的触控感应结构。或者说，该第一信号线211为复用功能线，一方面其作为该触控显示面板的复位信号线也即是Vi线，一方面其还形成了触控感应区域的触控感应结构。第二信号线212也为复用功能线，其可以为VDD线也可以为VI线。
其中，接收触控感应区域跨过发射触控感应区域的跨线采用其它金属层的跨线，避免Trace line走线和其他触控感应区域的触控感应结构短路短路，例如Vdd走线采用SD金属层，横向跨线可以采用GE1金属层、GE2金属层、Anode金属层等，另外，TX信号线可以是可以是芯片给入也可以是GOA驱动电路给入。
请同时参照图3，该触控感应区域21呈圆形状、矩形状或棱形状。对应地，每一阴极区域31也呈圆形状、矩形状或棱形状，但是面积小于或者等于对应的触控感应区域21。该多个阴极区域的形成过程为，先在形成一金属层，然后对该金属层进行图形化处理（曝光、显影以及刻蚀）从而形成了多个间隔分布的阴极区域31。
在一些实施例中，请参照图4，该触控感应区域21为自容性是触控感应区域，对应地，该触控感应结构为自容性是触控感应结构。每一触控感应区域21通过一独立的第二信号线215与触控驱动芯片连接。
触控感应区域21内形成有多条纵横交错且电连接的第一信号线211，该多条纵横交错且电连接的第一信号线构211成了一个触控感应结构。每一触控感应区域21的第一信号线211的两端均延伸至该触控感应区域21的边缘。多个触控感应区域呈均匀间隔的矩形阵列分布。触控感应工作时段，Trace line给出高频的时序信号，驱动某单独触控感应结构时，此触控感应结构给入高频信号，周边的触控感应结构按照时序输入低位驱动信号，故而驱动的触控感应结构和周边触控感应结构形成电容，同时Trace line接收触控感应结构的反馈信号，通过芯片逻辑运算，分析出手指触控位置。
在本实施例中，该第一信号线211为复用功能线，一方面其作为该触控显示面板的数据信号线也即是VDD线，一方面其还形成了触控感应区域的触控感应结构。或者说，该第一信号线211为复用功能线，一方面其作为该触控显示面板的复位信号线也即是Vi线，一方面其还形成了触控感应区域的触控感应结构。第二信号线215也为复用功能线，其可以为VDD线也可以为VI线。
请同时参照图5，触控感应区域呈圆形状、矩形状或棱形状，对应地，每一阴极区域31也呈圆形状、矩形状或棱形状，但是面积小于或者等于对应的触控感应区域21。该多个阴极区域的形成过程为，先在形成一金属层，然后对该金属层进行图形化处理（曝光、显影以及刻蚀）从而形成了多个间隔分布的阴极区域31。该各个阴极区域31的分布与该触控感应区域21的分布是对应的。Trace line走线跨过非自身的触控感应结构，需要用其它层金属跨线，避免Trace line走线和其他触控感应结构短路。
请参照图6，图6为本发明中一实施例的触控显示面板的显示电路的结构图。其为典型的7T1C（包含7个TFT和一个电容器）驱动电路，在其它实施例中也可以是其它类型的驱动电路，例如6T1C、7T2C等电路。本实施例示例性的说明如何将VDD信号线或VI信号线进行复用。
请参照图7，图7为本发明中触控显示面板在该触控感应区域为互容性时的驱动时序图，工作阶段驱动信号，以PMOS器件为例，所有像素驱动信号XScan or Reset信号从n=1,2,…n，同一时间全部给入低位信号，这样触控显示面板的阳极层被输入低位信号，关断OLED；Scan时序信号n=1,2,…n，全部给高位信号，同一时间将所有像素中的T1、T2、T3、T4全部关断；EM时序信号n=1,2,…n，全部给高位信号，同一时间将所有像素中的T5、T6全部关断；Vdd走线此时分：TX(输入高频时序信号)，RX(接收信号，接入触控感应芯片中)，Dummy(接入触控感应芯片，输入Vss信号或者r其它低位信号)；阴极信号保持和显示阶段一样。显示阶段，由Vdd走线组成的：TX、RX、Dummy，同时输入相同的4.5V左右的信号；同一时间Scan时序、XScan时序、EM时序全部拉高或者拉低可以通过XScan、Scan、EM GOA里面增加Reset单元，将output信号同时输入高位或者低位。
请参照图8，图8为本发明中触控显示面板在该触控感应区域为自容性时的驱动时序图。工作阶段驱动信号，以PMOS器件为例，所有像素的驱动信号XScan or Reset信号从n=1,2,…n，同一时间全部给入低位信号，这样阳极层被输入低位信号，关断OLED；Scan时序信号n=1,2,…n，全部给高位信号，同一时间将所有pixel中的T1、T2、T3、T4全部关断；EM时序信号n=1,2,…n，全部给高位信号，同一时间将所有像素中的T5、T6全部关断；Vdd信号此时开始，依序给入高频信号；各个阴极区域信号保持和显示阶段一样。同一时间Scan时序、XScan时序、EM时序全部拉高或者拉低可以通过XScan、Scan、EM GOA里面增加Reset单元，将GOA output信号同时输入高位或者低位。
由上可知，本发明通过将触控感应结构设置在该触控显示面板的内部，并采用对阴极层进行图形化处理的方式将触控感应结构露出，从而实现了INCELL的触控感应方式，可以减小触控感应面板的厚度。
以上对本发明实施例提供的触控显示面板进行了详细介绍，本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明。同时，对于本领域的技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本发明的限制。

Claims (16)

  1. 一种触控显示面板，其包括：
    阵列基板，及依次设置于该阵列基板上的金属层、发光层以及阴极层；
    该金属层形成多个间隔分布的触控感应区域；
    该阴极层包括多个间隔分布的阴极区域，该多个阴极区域与该多个触控感应区域一一对应；所述阴极区域在所述金属层上的垂直投影位于对应的所述触控区域内；
    其中，该触控感应区域为自容性感应区域，每一所述触控感应区域通过一独立的第二信号线与触控驱动芯片连接；
    所述多个触控感应区域包括多个发射触控感应区域和多个接收触控感应区域；
    该多个发射触控感应区域呈矩形阵列分布；
    该多个接收触控感应区域呈矩形阵列分布；
    该多个发射触控感应区域与该多个接收触控感应区域在列方向上交差分布。
  2. 根据权利要求1所述的触控显示面板，其中，每一所述触控感应区域包括多条纵横交错且电连接的第一信号线。
  3. 根据权利要求2所述的触控显示面板，其中，所述第一信号线为数据信号线或复位信号线，所述第二信号线为数据信号线或复位信号线。
  4. 根据权利要求3所述的触控显示面板，其中，所述触控感应区域呈圆形状、矩形状或棱形状；每一所述第一信号线的两端均延伸至所述触控感应区域的边缘。
  5. 根据权利要求3所述的触控显示面板，其中，所述多个触控感应区域呈矩形阵列分布。
  6. 根据权利要求1所述的触控显示面板，其中，同一行的接收触控感应区域之间是电隔离的，同一行的发射触控感应区域之间是电连接的；同一列的接收触控感应区域之间通过金属跨线电连接，各行发射触控感应区域分别通过一条第二信号线与触控发射芯片连接，同一列的接收触控区域功用一条信号线来与触控接收芯片连接。
  7. 根据权利要求6所述的触控显示面板，其中，所述第一信号线为数据信号线或复位信号线，所述第二信号线为数据信号线或复位信号线。
  8. 一种触控显示面板，其包括：
    阵列基板，及依次设置于该阵列基板上的金属层、发光层以及阴极层；
    该金属层形成多个间隔分布的触控感应区域；
    该阴极层包括多个间隔分布的阴极区域，该多个阴极区域与该多个触控感应区域一一对应；所述阴极区域在所述金属层上的垂直投影位于对应的所述触控区域内。
  9. 根据权利要求8所述的触控显示面板，其中，该触控感应区域为自容性感应区域，每一所述触控感应区域通过一独立的第二信号线与触控驱动芯片连接。
  10. 根据权利要求9所述的触控显示面板，其中，每一所述触控感应区域包括多条纵横交错且电连接的第一信号线。
  11. 根据权利要求10所述的触控显示面板，其中，所述第一信号线为数据信号线或复位信号线，所述第二信号线为数据信号线或复位信号线。
  12. 根据权利要求11所述的触控显示面板，其中，所述触控感应区域呈圆形状、矩形状或棱形状；每一所述第一信号线的两端均延伸至所述触控感应区域的边缘。
  13. 根据权利要求11所述的触控显示面板，其中，所述多个触控感应区域呈矩形阵列分布。
  14. 根据权利要求8所述的触控显示面板，其中，所述多个触控感应区域包括多个发射触控感应区域和多个接收触控感应区域；
    该多个发射触控感应区域呈矩形阵列分布；
    该多个接收触控感应区域呈矩形阵列分布；
    该多个发射触控感应区域与该多个接收触控感应区域在列方向上交差分布。
  15. 根据权利要求8所述的触控显示面板，其中，同一行的接收触控感应区域之间是电隔离的，同一行的发射触控感应区域之间是电连接的；同一列的接收触控感应区域之间通过金属跨线电连接，各行发射触控感应区域分别通过一条第二信号线与触控发射芯片连接，同一列的接收触控区域功用一条信号线来与触控接收芯片连接。
  16. 根据权利要求15所述的触控显示面板，其特征在于，所述第一信号线为数据信号线或复位信号线，所述第二信号线为数据信号线或复位信号线。
PCT/CN2018/099237 2018-05-31 2018-08-07 触控显示面板 WO2019227667A1 (zh)

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