WO2018120287A1 - 一种基于oled的内置式触控显示面板 - Google Patents

一种基于oled的内置式触控显示面板 Download PDF

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Publication number
WO2018120287A1
WO2018120287A1 PCT/CN2017/070522 CN2017070522W WO2018120287A1 WO 2018120287 A1 WO2018120287 A1 WO 2018120287A1 CN 2017070522 W CN2017070522 W CN 2017070522W WO 2018120287 A1 WO2018120287 A1 WO 2018120287A1
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Prior art keywords
cathode
display panel
layer
blocks
block
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English (en)
French (fr)
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平山秀雄
永井肇
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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 US15/327,779 priority Critical patent/US10203823B2/en
Publication of WO2018120287A1 publication Critical patent/WO2018120287A1/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
    • G06F3/0412—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
    • 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
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • 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
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • 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
    • 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
    • H10K50/822—Cathodes characterised by their shape
    • 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
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • 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
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8051—Anodes
    • 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
    • H10K59/80—Constructional details
    • H10K59/805—Electrodes
    • H10K59/8052—Cathodes
    • H10K59/80521—Cathodes characterised by their shape
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • 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
    • 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
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
    • 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
    • H10K50/81—Anodes

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to an OLED-based built-in touch display panel.
  • the conventional method is to sequentially set the first metal layer and the second metal layer on the OLED display panel, and the first metal layer and the second metal layer are insulated by the insulating layer.
  • the first metal layer serves as a driving electrode
  • the second metal layer functions as a sensing electrode
  • the touch function is realized by driving the electrode and the sensing electrode.
  • the technical problem to be solved by the present invention is to provide an OLED-based built-in touch display panel, which can realize the touch function without introducing an additional electrode layer and/or an insulating layer.
  • an OLED-based built-in touch display panel which includes a thin film transistor array layer and an anode layer arranged in order from bottom to top.
  • An organic light emitting diode layer and a cathode layer wherein the cathode layer comprises a plurality of first cathode blocks and a plurality of second cathode blocks, the first cathode block and the second cathode block being alternately arranged with each other along a lateral direction and a longitudinal direction of the display panel, adjacent to each other
  • the first cathode blocks are electrically connected to each other, and the adjacent second cathode blocks are electrically connected to each other;
  • the cathode layer further comprises a plurality of dividing blocks, the dividing blocks being disposed between the first cathode block and the second cathode block;
  • the thin film transistor array layer includes at least one conductive layer, the conductive layer is provided with a plurality of
  • section of the dividing block is arranged in an inverted cone shape.
  • the top surface of the partitioning block has a specific pattern, and the specific pattern extends to the first cathode block and the adjacent other first cathode block respectively to electrically connect the adjacent first cathode blocks to each other in the cathode layer.
  • the conductive bridge is in direct contact with the corresponding two second cathode blocks through the anode layer and the organic light emitting diode layer.
  • the conductive bridge is formed by a signal line disposed on the conductive layer.
  • first cathode block and the second cathode block have the same cross-sectional shape and cross-sectional size.
  • first cathode block and the second cathode block have a rectangular cross section.
  • the minimum value of the distance between the adjacent first cathode block and the second cathode block is a sub-pixel distance.
  • an OLED-based built-in touch display panel which includes a thin film transistor array layer and an anode layer arranged in order from bottom to top. , an organic light emitting diode layer and a cathode layer;
  • the cathode layer comprises a plurality of first cathode blocks and a plurality of second cathode blocks, the first cathode block and the second cathode block are alternately arranged along the lateral direction and the longitudinal direction of the display panel, and the adjacent first cathode blocks are electrically connected to each other The adjacent second cathode blocks are electrically connected to each other.
  • the cathode layer further comprises a plurality of dividing blocks, the dividing block being disposed between the first cathode block and the second cathode block.
  • section of the dividing block is arranged in an inverted cone shape.
  • the top surface of the partitioning block has a specific pattern, and the specific pattern extends to the first cathode block and the adjacent other first cathode block respectively to electrically connect the adjacent first cathode blocks to each other in the cathode layer.
  • the thin film transistor array layer includes at least one conductive layer, the conductive layer is provided with a plurality of conductive bridges, and the adjacent second cathode blocks are electrically connected to each other through corresponding conductive bridges.
  • the conductive bridge is in direct contact with the corresponding two second cathode blocks through the anode layer and the organic light emitting diode layer.
  • the conductive bridge is formed by a signal line disposed on the conductive layer.
  • first cathode block and the second cathode block have the same cross-sectional shape and cross-sectional size.
  • first cathode block and the second cathode block have a rectangular cross section.
  • the minimum value of the distance between the adjacent first cathode block and the second cathode block is a sub-pixel distance.
  • the OLED-based built-in touch display panel of the present invention divides the cathode layer into a plurality of first cathode blocks and a plurality of second cathode blocks, wherein the first cathode block and the second cathode The blocks are alternately arranged along the lateral direction and the longitudinal direction of the display panel, the adjacent first cathode blocks are electrically connected to each other, and the adjacent second cathode blocks are electrically connected to each other.
  • the present invention can realize the touch function without introducing an additional electrode layer and an insulating layer, thereby realizing the built-in touch display panel at a lower cost, a simpler production process, and a higher output rate.
  • FIG. 1 is a cross-sectional structural view of an OLED-based built-in touch display panel according to an embodiment of the invention
  • FIG. 2 is a schematic plan view showing the planar structure of the OLED-based built-in touch display panel shown in FIG. 1;
  • FIG. 3 is a partial enlarged view of the OLED-based built-in touch display panel shown in FIG. 2 .
  • FIG. 1 is a cross-sectional structural diagram of an OLED-based built-in touch display panel according to an embodiment of the present invention
  • FIG. 2 is an OLED-based built-in touch display panel illustrated in FIG. 1
  • FIG. 3 is a partial enlarged view of the OLED-based built-in touch display panel shown in FIG. 2 .
  • the display panel includes a thin film transistor layer 11, an anode layer 12, an organic light emitting diode layer 13, and a cathode layer 14 which are sequentially disposed in order from bottom to top.
  • the cathode layer 14 includes a plurality of first cathode blocks 141 and a plurality of second cathode blocks 142.
  • the first cathode block 141 and the second cathode block 142 are insulated from each other, and the first cathode block 141 and the second cathode block 142 are alternately arranged with each other along the lateral direction and the longitudinal direction of the display panel.
  • the first cathode block 141 and the second cathode block 142 have the same cross-sectional shape and cross-sectional size.
  • the cross-sectional shapes of the first cathode block 141 and the second cathode block 142 are rectangularly disposed, which cover an integer number of sub-pixels 145.
  • the minimum distance between adjacent first cathode block 141 and second cathode block 142 is sub-pixel distance Sub-pixel Gap, in practical applications, the sub-pixel distance is about 10 microns. It will be understood by those skilled in the art that since the minimum distance between adjacent first cathode block 141 and second cathode block 142 can reach the sub-pixel distance, the first cathode block 141 and the second cathode block can be significantly improved.
  • the density of 142 increases the touch accuracy of the touch function of the display panel.
  • the cathode layer 14 further includes a plurality of dividing blocks 143 that divide the cathode layer 14 into a plurality of first cathode blocks 141 and a plurality of second cathode blocks 142.
  • the dividing block 143 is disposed between the first cathode block 141 and the second cathode block 142, and the sectional shape of the dividing block 143 is set in an inverted cone shape. In other embodiments, the dividing block 143 can also be other shapes than the inverted cone.
  • the adjacent first cathode blocks 141 are electrically connected to each other.
  • four dividing blocks 143 are disposed around a first cathode block 141.
  • four dividing blocks 143 are disposed in the first portion.
  • the first cathode block 141 is electrically connected to the adjacent four first cathode blocks 141 through the four dividing blocks 143, respectively.
  • each of the partitioning blocks 143 has a specific pattern extending to one corner of the first cathode block 141 and the distance between the adjacent other first cathode block 141 and the first cathode block 141, respectively.
  • the nearest corner is such that the two first cathode blocks 141 are electrically connected to each other at the cathode layer 14.
  • adjacent second cathode blocks 142 are electrically connected to each other.
  • the thin film transistor layer 11 includes at least one conductive layer 111.
  • the conductive layer 111 is provided with a plurality of conductive bridges 112, and the adjacent second cathode blocks 142 are electrically connected to each other through the corresponding conductive bridges 112.
  • the conductive bridge 112 is in direct contact with the corresponding two second cathode blocks 142 through the anode layer 12 and the organic light emitting diode layer 13.
  • the conductive bridge 112 is not covered by the anode layer 12 and the organic light emitting diode layer 13, that is, the anode layer 12 is divided by the conductive bridge 112 into a plurality of spaced anode blocks 121, and the organic light emitting diode layer 13 is
  • the conductive bridge 112 is divided into a plurality of spaced apart organic light-emitting blocks 131 that pass through the gap between the anode blocks 121 and the gap between the organic light-emitting blocks 131 and the corresponding two second cathodes disposed on the cathode layer 14.
  • Block 142 is in direct contact.
  • four conductive bridges 112 are disposed around a second cathode block 142.
  • the four conductive bridges 112 are disposed at Four corner positions of the second cathode block 142, one ends of the four conductive bridges 112 are connected to the four corners of the second cathode block 142, and the other ends of the four conductive bridges 112 are respectively adjacent to the corresponding adjacent four
  • the second cathode block 142 is connected to the closest corner of the second cathode block 142 such that the adjacent second cathode blocks 142 are electrically connected to each other at the conductive layer 111.
  • the conductive bridge 112 is formed by a signal line S-Line disposed in the conductive layer 111 in the thin film transistor array layer 11.
  • the material of the signal line S-Line is SD Material.
  • the data line D-Line and the power line P-Line disposed in the same conductive layer 111 are bypassed with respect to the conductive bridge 112, that is, the data line D-Line and the power line P-Line surround the conductive Bridge 112 is set.
  • the first cathode block 141 is a driving electrode
  • the second cathode block 142 is a sensing electrode
  • the first cathode block 141 may be a sensing electrode
  • the second cathode block 142 may be a driving electrode
  • the image display function and touch function of the display panel are executed in a time-sharing manner.
  • a combination of the thin film transistor array layer 11, the anode layer 12, the organic light emitting diode layer 13 and the cathode layer 14 is used for displaying an image, specifically, when the image display time arrives, the thin film transistor array layer 11, the anode layer 12, and the organic
  • the LED layer 13 and the cathode layer 14 display an image based on the image display data under the control of the control signal.
  • the cathode layer 14 is used for touch sensing.
  • the first cathode block 141 and the second cathode block 142 near the pressing point are affected, that is, between the sensing electrode and the driving electrode.
  • the coupling which in turn changes the size of the coupling capacitance between the two electrodes.
  • the sensing electrode emits an excitation signal
  • the scanning electrodes receive the signals one by one, so that the coupling capacitances of all the driving electrodes and the sensing electrodes can be obtained, and the pressing force can be obtained by comparing the variation of the coupling capacitance before and after pressing.
  • the coordinates of the point in turn, the touch function.
  • the OLED-based built-in touch display panel of the present invention divides the cathode layer into a plurality of first cathode blocks and a plurality of second cathode blocks, wherein the first cathode block and the second cathode The blocks are alternately arranged along the lateral direction and the longitudinal direction of the display panel, the adjacent first cathode blocks are electrically connected to each other, and the adjacent second cathode blocks are electrically connected to each other.
  • the present invention can realize the touch function without introducing an additional electrode layer and/or an insulating layer, thereby realizing the built-in touch at a lower cost, a simpler production process, and a higher output rate. Display panel.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种基于OLED的内置式触控显示面板。该显示面板包括按照从下到上的次序依次设置的薄膜晶体管阵列层(11)、阳极层(12)、有机发光二极管层(13)和阴极层(14)；其中，阴极层(14)包括多个第一阴极块(141)和多个第二阴极块(142)，第一阴极块(141)和第二阴极块(142)沿显示面板的横向和纵向彼此交替设置，相邻的第一阴极块(141)彼此电性连接，相邻的第二阴极块(142)彼此电性连接。通过上述方式，能够以较低的成本、较简单的生产流程以及较高的产出率实现内置式触控显示面板。

Description

一种基于OLED的内置式触控显示面板
【技术领域】
本发明涉及液晶显示领域，特别是涉及一种基于OLED的内置式触控显示面板。
【背景技术】
传统的有机发光（Organic Light Emitting Display，OLED）显示面板不具备触控功能。为了实现在OLED显示面板上实现触控功能，传统的做法是：在OLED显示面板上依次设置第一金属层和第二金属层，第一金属层和第二金属层之间通过绝缘层进行隔绝。其中，第一金属层作为驱动电极，第二金属层作为感应电极，通过驱动电极和感应电极来实现触控功能。
但是，采用传统的方法实现触控功能时，需要引入额外的电极层和绝缘层，从而使得成本变高、生产流程变复杂、产出率变低。
【发明内容】
本发明主要解决的技术问题是提供一种基于OLED的内置式触控显示面板，不需要引入额外的电极层和/或绝缘层即可实现触控功能。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种基于OLED的内置式触控显示面板，该显示面板包括按照从下到上的次序依次设置的薄膜晶体管阵列层、阳极层、有机发光二极管层和阴极层；其中，阴极层包括多个第一阴极块和多个第二阴极块，第一阴极块和第二阴极块沿显示面板的横向和纵向彼此交替设置，相邻的第一阴极块彼此电性连接，相邻的第二阴极块彼此电性连接；其中，阴极层进一步包括多个划分块，划分块设置在第一阴极块和第二阴极块之间；其中，薄膜晶体管阵列层至少包括一导电层，导电层设置有多个导电桥，相邻的第二阴极块通过对应的导电桥彼此电性连接。
其中，划分块的截面呈倒锥状设置。
其中，划分块的顶面具有特定图案，特定图案分别延伸至该第一阴极块和相邻的另一第一阴极块以使相邻的第一阴极块在阴极层彼此电性连接。
其中，导电桥穿过阳极层和有机发光二极管层与对应的两个第二阴极块直接接触。
其中，导电桥由设置于导电层的信号线形成。
其中，第一阴极块和第二阴极块具有相同的截面形状和截面大小。
其中，第一阴极块和第二阴极块的截面呈矩形设置。
其中，相邻的第一阴极块和第二阴极块之间的距离的最小值为子像素距离。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种基于OLED的内置式触控显示面板，该显示面板包括按照从下到上的次序依次设置的薄膜晶体管阵列层、阳极层、有机发光二极管层和阴极层；
其中，阴极层包括多个第一阴极块和多个第二阴极块，第一阴极块和第二阴极块沿显示面板的横向和纵向彼此交替设置，相邻的第一阴极块彼此电性连接，相邻的第二阴极块彼此电性连接。
其中，阴极层进一步包括多个划分块，划分块设置在第一阴极块和第二阴极块之间。
其中，划分块的截面呈倒锥状设置。
其中，划分块的顶面具有特定图案，特定图案分别延伸至该第一阴极块和相邻的另一第一阴极块以使相邻的第一阴极块在阴极层彼此电性连接。
其中，薄膜晶体管阵列层至少包括一导电层，导电层设置有多个导电桥，相邻的第二阴极块通过对应的导电桥彼此电性连接。
其中，导电桥穿过阳极层和有机发光二极管层与对应的两个第二阴极块直接接触。
其中，导电桥由设置于导电层的信号线形成。
其中，第一阴极块和第二阴极块具有相同的截面形状和截面大小。
其中，第一阴极块和第二阴极块的截面呈矩形设置。
其中，相邻的第一阴极块和第二阴极块之间的距离的最小值为子像素距离。
本发明的有益效果是： 区别于现有技术的情况，本发明的基于OLED的内置式触控显示面板通过将阴极层划分为多个第一阴极块和多个第二阴极块，其中，第一阴极块和第二阴极块沿显示面板的横向和纵向彼此交替设置，相邻的第一阴极块彼此电性连接，相邻的第二阴极块彼此电性连接。通过上述方式，本发明不需要引入额外的电极层和绝缘层即可实现触控功能，进而可以以较低的成本、较简单的生产流程以及较高的产出率实现内置式触控显示面板。
【附图说明】
图1是本发明实施例的基于OLED的内置式触控显示面板的剖面结构示意图；
图2是图1所示的基于OLED的内置式触控显示面板的平面结构示意图；
图3是图2所示的基于OLED的内置式触控显示面板的局部放大图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
参考图1、图2和图3，图1是本发明实施例的基于OLED的内置式触控显示面板的剖面结构示意图，图2是图1所示的基于OLED的内置式触控显示面板的平面结构示意图，图3是图2所示的基于OLED的内置式触控显示面板的局部放大图。如图1、图2和图3所示，该显示面板包括按照从下到上的次序依次设置的薄膜晶体管层11、阳极层12、有机发光二极管层13和阴极层14。
阴极层14包括多个第一阴极块141和多个第二阴极块142。其中，第一阴极块141和第二阴极块142彼此绝缘设置，第一阴极块141和第二阴极块142沿显示面板的横向和纵向彼此交替设置。优选地，第一阴极块141和第二阴极块142在具有相同的截面形状和截面大小。
在本实施例中，第一阴极块141和第二阴极块142的截面形状呈矩形设置，其覆盖整数个子像素（Sub-pixel）145。相邻的第一阴极块141和第二阴极块142之间的距离的最小值为子像素距离Sub-pixel Gap，在实际应用中，子像素距离约在10微米左右。本领域的技术人员可以理解，由于相邻的第一阴极块141和第二阴极块142之间的距离的最小值可以达到子像素距离，从而能够显著提高第一阴极块141和第二阴极块142的密集度，进而提高显示面板的触控功能的触控精度。
优选地，阴极层14进一步包括多个划分块143，划分块143将阴极层14划分为多个第一阴极块141和多个第二阴极块142。在本实施例中，划分块143设置在第一阴极块141和第二阴极块142之间，划分块143的截面形状呈倒锥状设置。在其它实施例中，划分块143也可以为不同于倒锥状的其它形状。
在本实施例中，相邻的第一阴极块141彼此电性连接。具体来说，除开显示面板的边缘位置，围绕一第一阴极块141设置有四个划分块143，优选地，当该第一阴极块141呈矩形设置时，四个划分块143设置在该第一阴极块141的四个角落位置。该第一阴极块141通过四个划分块143分别与相邻的四个第一阴极块141电性连接。具体来说，每一划分块143的顶面具有特定图案，该特定图案分别延伸至该第一阴极块141的一个角和相邻的另一第一阴极块141与该第一阴极块141距离最近的一个角，从而使得两个第一阴极块141在阴极层14彼此电性连接。
在本实施例中，相邻的第二阴极块142彼此电性连接。具体来说，薄膜晶体管层11至少包括一导电层111，其中，导电层111设置有多个导电桥112，相邻的第二阴极块142通过对应的导电桥112彼此电性连接。优选地，导电桥112穿过阳极层12和有机发光二极管层13与对应的两个第二阴极块142直接接触。换个角度来说，导电桥112没有被阳极层12和有机发光二极管层13所覆盖，也就是说，阳极层12被导电桥112划分为多个间隔设置的阳极块121，有机发光二极管层13被导电桥112划分为多个间隔设置的有机发光块131，导电桥112穿过阳极块121之间的间隙以及有机发光块131之间的间隙与设置于阴极层14的对应的两个第二阴极块142直接相接触。
在本实施例中，除开显示面板的边缘位置，围绕一第二阴极块142设置有四个导电桥112，优选地，当该第二阴极块142呈矩形设置时，四个导电桥112设置在该第第二阴极块142的四个角落位置，四个导电桥112的一端与该第二阴极块142的四个角连接，四个导电桥112的另一端分别与对应的相邻的另外四个第二阴极块142中与该第二阴极块142距离最近的一个角连接，从而使得相邻的第二阴极块142在导电层111彼此电性连接。
优选地，当显示面板为在顶栅型顶部发光的OLED显示面板时，导电桥112由设置在薄膜晶体管阵列层11中的导电层111中的信号线S-Line形成。其中，该信号线S-Line的材料为SD 材料。另外，为避免短路，设置于同一导电层111中的数据线D-Line和电源线P-Line相对导电桥112绕道而行，也就是说，数据线D-Line和电源线P-Line围绕导电桥112设置。
在本实施例中，第一阴极块141为驱动电极，第二阴极块142为感应电极。在其它实施例中，也可以是，第一阴极块141为感应电极，第二阴极块142为驱动电极。
在实际使用过程中，显示面板的图像显示功能和触控功能分时执行。其中，薄膜晶体管阵列层11、阳极层12、有机发光二极管层13和阴极层14的组合用于显示图像，具体来说，在图像显示时间到达时，薄膜晶体管阵列层11、阳极层12、有机发光二极管层13和阴极层14在控制信号的控制下根据图像显示数据显示图像。其中，阴极层14用于触控感应，具体来说，当用户的手指按压显示面板时，会影响按压点附近的第一阴极块141和第二阴极块142也即感应电极和驱动电极之间的耦合，从而会改变这两个电极之间的耦合电容的大小。在触控感应时间到达时，感应电极发出激励信号，扫描电极逐一接收信号，这样可以得到所有驱动电极和感应电极的耦合电容的大小，通过比较按压前后的耦合电容的变化量，即可获得按压点的坐标，进而实现触控功能。
发明的有益效果是： 区别于现有技术的情况，本发明的基于OLED的内置式触控显示面板通过将阴极层划分为多个第一阴极块和多个第二阴极块，其中，第一阴极块和第二阴极块沿显示面板的横向和纵向彼此交替设置，相邻的第一阴极块彼此电性连接，相邻的第二阴极块彼此电性连接。通过上述方式，本发明不需要引入额外的电极层和/或绝缘层即可实现触控功能，进而可以以较低的成本、较简单的生产流程以及较高的产出率实现内置式触控显示面板。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (18)

  1. 一种基于OLED的内置式触控显示面板，其中，所述显示面板包括按照从下到上的次序依次设置的薄膜晶体管阵列层、阳极层、有机发光二极管层和阴极层；
    其中，所述阴极层包括多个第一阴极块和多个第二阴极块，所述第一阴极块和所述第二阴极块沿所述显示面板的横向和纵向彼此交替设置，相邻的所述第一阴极块彼此电性连接，相邻的所述第二阴极块彼此电性连接；
    其中，所述阴极层进一步包括多个划分块，所述划分块设置在所述第一阴极块和所述第二阴极块之间；
    所述薄膜晶体管阵列层至少包括一导电层，所述导电层设置有多个导电桥，相邻的所述第二阴极块通过对应的所述导电桥彼此电性连接。
  2. 根据权利要求1所述的显示面板，其中，所述划分块的截面呈倒锥状设置。
  3. 根据权利要求1所述的显示面板，其中，所述划分块的顶面具有特定图案，所述特定图案分别延伸至该第一阴极块和相邻的另一所述第一阴极块以使相邻的两个所述第一阴极块在所述阴极层彼此电性连接。
  4. 根据权利要求1所述的显示面板，其中，所述导电桥穿过所述阳极层和所述有机发光二极管层与对应的两个所述第二阴极块直接接触。
  5. 根据权利要求4所述的显示面板，其中，所述导电桥由设置于所述导电层的信号线形成。
  6. 根据权利要求1所述的显示面板，其中，所述第一阴极块和所述第二阴极块具有相同的截面形状和截面大小。
  7. 根据权利要求6所述的显示面板，其中，所述第一阴极块和所述第二阴极块的截面呈矩形设置。
  8. 根据权利要求7所述的显示面板，其中，相邻的所述第一阴极块和所述第二阴极块之间的距离的最小值为子像素距离。
  9. 一种基于OLED的内置式触控显示面板，其中，所述显示面板包括按照从下到上的次序依次设置的薄膜晶体管阵列层、阳极层、有机发光二极管层和阴极层；
    其中，所述阴极层包括多个第一阴极块和多个第二阴极块，所述第一阴极块和所述第二阴极块沿所述显示面板的横向和纵向彼此交替设置，相邻的所述第一阴极块彼此电性连接，相邻的所述第二阴极块彼此电性连接。
  10. 根据权利要求9所述的显示面板，其中，所述阴极层进一步包括多个划分块，所述划分块设置在所述第一阴极块和所述第二阴极块之间。
  11. 根据权利要求10所述的显示面板，其中，所述划分块的截面呈倒锥状设置。
  12. 根据权利要求10所述的显示面板，其中，所述划分块的顶面具有特定图案，所述特定图案分别延伸至该第一阴极块和相邻的另一所述第一阴极块以使相邻的两个所述第一阴极块在所述阴极层彼此电性连接。
  13. 根据权利要求9所述的显示面板，其中，所述薄膜晶体管阵列层至少包括一导电层，所述导电层设置有多个导电桥，相邻的所述第二阴极块通过对应的所述导电桥彼此电性连接。
  14. 根据权利要求13所述的显示面板，其中，所述导电桥穿过所述阳极层和所述有机发光二极管层与对应的两个所述第二阴极块直接接触。
  15. 根据权利要求14所述的显示面板，其中，所述导电桥由设置于所述导电层的信号线形成。
  16. 根据权利要求9所述的显示面板，其中，所述第一阴极块和所述第二阴极块具有相同的截面形状和截面大小。
  17. 根据权利要求16所述的显示面板，其中，所述第一阴极块和所述第二阴极块的截面呈矩形设置。
  18. 根据权利要求17所述的显示面板，其中，相邻的所述第一阴极块和所述第二阴极块之间的距离的最小值为子像素距离。
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CN104199586A (zh) * 2014-09-16 2014-12-10 重庆京东方光电科技有限公司 一种阵列基板、内嵌式触摸屏和触控显示装置
CN104409469A (zh) * 2014-10-30 2015-03-11 京东方科技集团股份有限公司 一种amoled触控显示装置及其制备方法、驱动方法

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