WO2023201794A1 - 显示面板 - Google Patents

显示面板 Download PDF

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Publication number
WO2023201794A1
WO2023201794A1 PCT/CN2022/092708 CN2022092708W WO2023201794A1 WO 2023201794 A1 WO2023201794 A1 WO 2023201794A1 CN 2022092708 W CN2022092708 W CN 2022092708W WO 2023201794 A1 WO2023201794 A1 WO 2023201794A1
Authority
WO
WIPO (PCT)
Prior art keywords
touch
display panel
panel according
electrode
wire
Prior art date
Application number
PCT/CN2022/092708
Other languages
English (en)
French (fr)
Inventor
胡晓斌
Original Assignee
广州华星光电半导体显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广州华星光电半导体显示技术有限公司 filed Critical 广州华星光电半导体显示技术有限公司
Priority to US17/780,535 priority Critical patent/US20240176455A1/en
Publication of WO2023201794A1 publication Critical patent/WO2023201794A1/zh

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Classifications

    • 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
    • G06F3/047—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using sets of wires, e.g. crossed wires
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • 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
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • 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
    • G06F3/044—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

Definitions

  • the present application belongs to the field of display technology, and in particular, relates to a display panel.
  • Touch technology includes In-cell technology, which refers to technology that integrates touch electrodes into LCD panels.
  • the touch electrode and the common electrode usually adopt the same electrode structure, and the touch electrode and the common electrode are driven by time-sharing driving. Since the number of touch chip channels is limited and the number of assignable touch traces is large, there will be redundant traces. Since the redundant wiring is only connected to the common signal line in the non-display area of the display panel and does not affect the common electrode in the display area, and the common electrode in the display area has impedance, resulting in a common voltage signal in the display area of the display panel Unstable.
  • the redundant wiring is only connected to the common signal line in the non-display area of the display panel and does not affect the common electrode in the display area, and the common electrode in the display area has impedance, resulting in a common voltage signal in the display area of the display panel Unstable.
  • Embodiments of the present application provide a display panel to solve the problem of unstable common voltage signals in the display area of existing display panels.
  • An embodiment of the present application provides a display panel, including:
  • the touch layer includes a plurality of touch electrodes arranged in an array
  • a plurality of touch traces each of which is connected to one of the touch electrodes to transmit touch signals of the touch electrodes;
  • a plurality of conductor segments are arranged in the same layer as a plurality of touch control traces, and each conductor segment is connected in parallel with the touch control electrode.
  • the redundant wiring is arranged in the form of multiple wire segments, and each wire segment is connected in parallel with the touch electrode, that is, a parallel impedance is provided to each touch electrode, so that It will reduce the impedance transmitted by the touch electrode and the wire segment as a whole, thereby reducing the voltage drop caused by the touch electrode and the wire segment.
  • the common electrode and the touch electrode are common electrodes in a time-sharing drive form, it also reduces The voltage drop caused by the common electrode and the wire segment is eliminated, thereby improving the stability of the common voltage signal transmitted in the display area of the display panel.
  • Figure 1 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 2 is a first structural schematic diagram of the display panel in the terminal device shown in FIG. 1 .
  • FIG. 3 is a schematic cross-sectional view of the first part of the structure of the display panel shown in FIG. 2 .
  • FIG. 4 is a schematic cross-sectional view of the second part of the structure of the display panel shown in FIG. 2 .
  • FIG. 5 is a second structural schematic diagram of the display panel in the terminal device shown in FIG. 1 .
  • FIG. 6 is a third structural schematic diagram of the display panel in the terminal device shown in FIG. 1 .
  • the embodiment of the present application provides a terminal device 1.
  • the terminal device 1 may include a display panel 10 and a housing 20.
  • the housing 20 is connected to the display panel 10 to carry the display panel 10.
  • the terminal device 1 may be a mobile electronic device such as a mobile phone, a tablet, or a computer.
  • the terminal device 1 may also be a computer device, a video playback device, a television, a vehicle-mounted computer, or other devices with display and touch functions.
  • the display panel 10 is a component used for display in the terminal device 1, and the user can perform touch operations on the display panel 10 to achieve different playback effects.
  • the display panel 10 may be a liquid crystal panel, that is, the terminal device 1 may be a liquid crystal display (LCD).
  • the structure of the LCD is to place a liquid crystal cell between two parallel glass substrates, and a thin film transistor (thin film transistor) is provided on the lower substrate glass ( Thin Film Transistor (TFT), a color filter is set on the upper substrate glass, and the rotation direction of the liquid crystal molecules is controlled by the signal and voltage change on the TFT, thereby controlling whether the polarized light of each pixel is emitted to achieve the display purpose.
  • TFT Thin Film Transistor
  • the integration of touch panels and LCD panels includes the "In-cell” method and the "On-cell” method.
  • the In-cell method refers to embedding the touch panel function into the LCD box, and the On-cell method.
  • the -cell method refers to embedding the touch panel function between the color filter substrate and the polarizing plate.
  • This application takes the display panel 10 prepared by the in-cell method as an example for description.
  • the touch electrode and the common electrode usually adopt the same electrode structure and are driven in a time-sharing driving manner. Since the number of touch chip channels is limited and the number of assignable touch traces is large, there will be redundant traces, which can be understood as auxiliary traces.
  • the auxiliary wiring is only connected to the common signal line in the non-display area of the display panel and does not affect the common electrode in the display area, and there is a voltage drop in the common electrode in the display area, the common voltage signal in the display area of the display panel is not Stablize.
  • the embodiment of the present application improves the wiring method of the display panel 10 .
  • Figure 2 is a first structural schematic diagram of the display panel in the terminal device shown in Figure 1.
  • the display panel 10 may include a display area A-A and a non-display area B-B.
  • the non-display area B-B is arranged around the display area A-A. It can be understood that the non-display area B-B can be used for wiring, and at the same time, the non-display area B-B can be used to connect with the casing. 20, the part connecting the non-display area B-B and the housing 20 can also be called the frame area of the terminal device 1.
  • Figure 3 is a schematic cross-sectional view of the first part of the structure of the display panel shown in Figure 2
  • Figure 4 is a second structure of the display panel shown in Figure 2.
  • Figure 5 is a second structural schematic diagram of the display panel in the terminal equipment shown in Figure 1.
  • Figure 6 is a third structural schematic diagram of the display panel in the terminal equipment shown in Figure 1.
  • the display panel 10 may also include a touch layer 11 , a touch chip 12 and a wiring layer 13 .
  • the touch layer 11 may include a plurality of touch electrodes 110 arranged in an array, and the plurality of touch electrodes 110 are disposed in the display area A-A.
  • the touch chip 12 is disposed in the non-display area B-B, and the touch chip 12 may include a plurality of touch pins 120 .
  • the wiring layer 13 is provided on one side of the touch layer 11 .
  • the wiring layer 13 includes a plurality of touch wirings 131 and a plurality of wire segments 132 .
  • the plurality of touch traces 131 are respectively connected to the plurality of touch electrodes 110 and the plurality of touch pins 120 . That is to say, each touch trace 131 is connected to one touch electrode 110 to transmit the touch signal of the touch electrode 110 .
  • the plurality of conductor segments 132 and the plurality of touch traces 131 are arranged in the same layer, and each conductor segment 132 is connected in parallel with the touch electrode 110 .
  • each wire segment 132 is connected in parallel with the touch electrode 110, that is, a parallel impedance is provided to each touch electrode 110, which will reduce the touch
  • the impedance transmitted by the electrode 110 and the wire segment 132 as a whole reduces the voltage drop caused by the touch electrode 110 and the wire segment 132. Since the common electrode and the touch electrode 110 are common electrodes in a time-sharing driving mode, it also reduces The voltage drop caused by the common electrode and the wire segment 132 is eliminated, thereby improving the stability of the common voltage signal transmitted in the display area A-A of the display panel.
  • the display panel 10 further includes a pixel layer.
  • the pixel layer includes a plurality of pixel electrodes, and the plurality of pixel electrodes are arranged in an array in the display area A-A.
  • the pixel layer and the touch layer 11 are located on different layers and are stacked.
  • the number of pixel electrodes is greater than the number of touch electrodes 110.
  • the area occupied by one touch electrode 110 is the same as the area occupied by 64 pixel electrodes. That is, one touch electrode 110 corresponds to 64 pixel electrodes. .
  • the number of 64 pixel electrodes is only an example and should not be understood as a limitation on the number of pixel electrodes.
  • the display panel 10 may also include an array substrate 30, a color filter substrate 40 and a liquid crystal layer 50.
  • the color filter substrate 40 is stacked on the array substrate 30, and the liquid crystal layer 50 is disposed on the array substrate 30 and the color filter substrate 40. between.
  • the touch layer 11 is also disposed between the array substrate 30 and the color filter substrate 40 , and the touch layer 11 can be integrated into the array substrate 30 . That is to say, the display panel 10 of the embodiment of the present application is a touch-display integrated panel made using In-cell technology.
  • the transmission process or operating principle of the touch signal can be: when the user touches the touch electrode 110 in a certain area, a capacitance is formed between the user's finger and the touch electrode 110, and the capacitance changes. , that is, the change in capacitance is used to characterize the user's touch signal, and then the touch signal is transmitted to the main control board of the terminal device 1.
  • the main control board makes corresponding display controls set in advance based on the position information of the touch signal. plan.
  • the touch layer 11 includes a plurality of touch electrodes 110.
  • the shape of each touch electrode 110 can be a square sheet.
  • the material of the touch electrode 110 can be a transparent material, such as indium tin oxide (Indium tin oxide). oxide, ITO), ITO is usually transparent brown or yellowish gray.
  • ITO indium tin oxide
  • the touch electrode 110 can also be made of other types of transparent materials, which is not limited here.
  • Each touch electrode 110 is connected to the touch chip 12 to transmit the signal at each touch electrode 110 to the touch chip 12, and then the touch chip 12 transmits it to the main control board of the terminal device 1. Thus, the signal changes at each touch electrode 110 are obtained.
  • the touch chip 12 can be understood as a signal conversion station. Of course, the touch chip 12 can also be a signal processing unit.
  • the touch chip 12 may include a plurality of touch pins 120 , and the plurality of touch electrodes 110 and the plurality of touch pins 120 are respectively connected through a plurality of touch traces 131 .
  • a touch trace 131 connects a touch electrode 110 and a touch pin 120.
  • Such an arrangement can more conveniently identify the position of the touch electrode 110 where the touch signal changes, thereby making it easier to Make corresponding display control plans.
  • the touch traces 131 and the touch electrodes 110 are provided on different layers. The connection between the touch traces 131 and the touch electrodes 110 is achieved by arranging via holes and arranging connection wires in the via holes.
  • the display panel 10 may further include a spacer layer 18 disposed between the touch layer 11 and the plurality of wire segments 132 .
  • the spacer layer 18 may be provided with a second via hole 134, and the second connecting wire 15 is provided in the second via hole 134.
  • Each touch trace 131 is respectively connected to the touch electrode 110 through the second connection wire 15 in the second via hole 134 .
  • the spacer layer 18 is provided with a plurality of second via holes 134 corresponding to the area of each touch electrode 110, and each touch trace 131 passes through a plurality of second connection wires 15 in the plurality of second via holes 134.
  • the second connection wire 15 may be integrally formed with the touch trace 131 .
  • the bottom touch electrode 110 and the second via hole 134 can be made before the touch trace 131 is made.
  • a layer of wire metal or ITO, wire metal or ITO can be directly laid. It can flow into the second via hole 134 to achieve connection with the touch electrode 110, and then be divided into multiple touch traces 131 as needed.
  • auxiliary traces are usually used to connect to public signal lines in the non-display area of the display panel. That is, the auxiliary traces extend from the display area to both ends of the non-display area, and are connected to the public signals through via holes in the non-display area. Line connection has no effect on the common voltage signal in the display area of the display panel.
  • the common voltage signal in the display area is affected by the impedance of the common electrode in the display area, and the common voltage signal may be unstable.
  • the embodiment of the present application improves the arrangement and connection method of the auxiliary wiring.
  • each auxiliary wiring is configured to include a plurality of wire segments 132 , each wire segment 132 is configured corresponding to one touch electrode 110 , and each wire segment 132 is connected in parallel with the touch electrode 110 .
  • Connecting an impedance in parallel to each touch electrode 110 can reduce the overall transmission impedance of the touch electrode 110 and the wire segment 132, thereby reducing the voltage drop between the touch electrode 110 and the wire segment 132. Since the touch electrode 110 is connected to the common The electrode is a common electrode driven by time division, so the stability of the common voltage signal in the display area A-A of the display panel 10 can be improved.
  • each touch electrode 110 is provided with at least two wire segments 132 , and each wire segment 132 is located between two touch wires 131 .
  • Each touch electrode 110 can be provided with two, three or more wire segments 132, which can result in more impedances connected in parallel to each touch electrode 110, thereby increasing the resistance transmitted by each touch electrode 110. The impedance is reduced, thereby reducing the impedance transmitted by the common electrode and improving the stability of the common voltage signal transmission in the display area A-A.
  • multiple conductor segments 132 in each column may be arranged in parallel. For example, multiple conductor segments 132 between two adjacent touch traces 131 are arranged in parallel.
  • a plurality of conductor segments 132 between two adjacent touch traces 131 are arranged on a straight line parallel to the touch traces 131 .
  • This can facilitate the production of the wire segments 132.
  • the auxiliary wires can be produced together with the touch wires 131.
  • Each auxiliary wire is arranged between two adjacent touch wires 131, and then the auxiliary wires are divided. It is a plurality of discontinuous wire segments 132.
  • the width of the wire segment 132 may be greater than the width of the touch trace 131 . This can make the impedance transmitted by the wire segment 132 and the touch electrode 110 smaller, thereby making the signal transmission stability of the common electrode higher.
  • the length of the wire segment 132 may be less than or equal to the length of the touch electrode 110 , and the length of the touch electrode 110 may be understood as the size in the length direction of the wire segment 132 , thereby reducing the size of the touch electrode 110 on different touch electrodes 110 . mutual interference between the wire segments 132.
  • each wire segment 132 and the touch electrode 110 is also achieved by arranging via holes and arranging connection wires in the via holes.
  • the spacer layer 18 is provided with a plurality of first via holes 133 corresponding to each wire segment 132.
  • a first connecting wire 14 is provided in each first via hole 133, and the wire segments 132 pass through the first via hole 133.
  • the first connection wire 14 is connected to the touch electrode 110 .
  • the first connecting wire 14 may be integrally formed with the wire segment 132 .
  • the wire segment 132 is connected in parallel with the touch electrode 110 through a plurality of first via holes 133. It can be understood that the touch electrode 110 has multiple impedances connected in parallel, thereby making the impedance transmitted by the touch electrode 110 smaller. That is to say, the stability of public voltage signal transmission is improved and higher.
  • each touch trace 131 is greater than the length of one auxiliary trace. It can be understood that the touch trace 131 is a continuous wire and is arranged in both the display area A-A and the non-display area B-B.
  • the auxiliary wiring is arranged in segments and includes multiple wire segments 132 . Therefore, the length of the auxiliary wiring is shorter than the length of the touch wiring 131 .
  • the auxiliary wiring is arranged in the form of multiple wire segments 132, and each wire segment 132 is connected in parallel with the touch electrode 110, that is, each touch electrode 110 is Parallel impedance, this will reduce the overall impedance transmitted by the touch electrode 110 and the wire segment 132, thereby reducing the voltage drop caused by the touch electrode 110 and the wire segment 132, because the common electrode and the touch electrode 110 are driven in a time-sharing manner Therefore, the voltage drop caused by the common electrode and the wire segment 132 is reduced, thereby improving the stability of the common voltage signal transmitted in the display area A-A of the display panel.
  • 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 indicated technical features. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more features.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Nonlinear Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Position Input By Displaying (AREA)

Abstract

一种显示面板（10），包括：触控层（11），包括多个触控电极（110）；多条触控走线（131），每一触控走线（131）分别连接一个触控电极（110），以传输触控电极（110）的触控信号；以及多个导线段（132），每一导线段（132）与触控电极（110）并联连接。通过给每一触控电极（110）并联阻抗，减小了公共电极和导线段（132）引起的电压降，提高了显示面板（10）的显示区（A-A）内传输的公共电压信号的稳定性。

Description

显示面板 技术领域
本申请属于显示技术领域，尤其涉及一种显示面板。
 背景技术
随着显示行业技术的发展，触控技术在显示面板的应用越来越广泛。触控技术包括In-cell技术，In-cell技术是指将触摸电极集成于液晶面板中的技术。
其中，触控电极与公共电极通常采用同一电极结构，对触控电极和公共电极的驱动采用的是分时驱动。由于触控芯片通道数量有限，而可分配的触控走线的数量较多，因此，会存在冗余的走线。由于冗余的走线仅在显示面板的非显示区与公共信号线连接，而不对显示区的公共电极产生作用，且显示区的公共电极存在阻抗，由此导致显示面板显示区的公共电压信号不稳定。
 技术问题
由于冗余的走线仅在显示面板的非显示区与公共信号线连接，而不对显示区的公共电极产生作用，且显示区的公共电极存在阻抗，由此导致显示面板显示区的公共电压信号不稳定。
 技术解决方案
本申请实施例提供一种显示面板，以解决现有的显示面板显示区的公共电压信号不稳定的问题。
本申请实施例提供一种显示面板，包括：
触控层，包括阵列排布的多个触控电极；
多条触控走线，每一所述触控走线分别连接一个所述触控电极，以传输所述触控电极的触控信号；以及
多个导线段，与多条所述触控走线同层设置，每一所述导线段与所述触控电极并联连接。
 有益效果
本申请实施例的显示面板中，通过将冗余的走线设置为多个导线段的形式，且每一导线段与触控电极并联连接，也即是给每一触控电极并联阻抗，这样会减小触控电极和导线段整体所传输的阻抗，进而减小触控电极和导线段引起的电压降，由于公共电极与触控电极为分时驱动形式的共用电极，因此也即减小了公共电极和导线段引起的电压降，进而提高了显示面板的显示区内传输的公共电压信号的稳定性。
 附图说明
图1为本申请实施例提供的终端设备的结构示意图。
图2为图1所示的终端设备中显示面板的第一种结构示意图。
图3为图2所示的显示面板中第一部分结构的截面示意图。
图4为图2所示的显示面板中第二部分结构的截面示意图。
图5为图1所示的终端设备中显示面板的第二种结构示意图。
图6为图1所示的终端设备中显示面板的第三种结构示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
为了解决现有的显示面板显示区的公共电压信号不稳定的问题，本申请实施例提供一种显示面板，以下将结合附图进行说明。
示例性的，请参阅图1，图1为本申请实施例提供的终端设备的结构示意图。本申请实施例提供一种终端设备1，终端设备1可以包括显示面板10和壳体20，壳体20与显示面板10连接，以承载显示面板10。示例性的，终端设备1可以是手机、平板、电脑等移动电子设备，终端设备1还可以是计算机设备、视频播放设备、电视机、车载电脑等具有显示和触控功能的设备。
其中，显示面板10是终端设备1中用于显示的部件，且用户可以在显示面板10上进行触控操作，以实现不同的播放效果。显示面板10可以是液晶面板，也即终端设备1可以是液晶显示器件（Liquid Crystal Display，LCD），LCD的构造是在两片平行的玻璃基板当中放置液晶盒，下基板玻璃上设置薄膜晶体管（Thin Film Transistor，TFT），上基板玻璃上设置彩色滤光片，通过TFT上的信号与电压改变来控制液晶分子的转动方向，从而达到控制每个像素点偏振光出射与否而达到显示目的。随着触控技术的发展，触摸面板和液晶面板的一体化包括“In-cell”方法和“On-cell”方法，其中，In-cell方法是指将触摸面板功能嵌入到液晶盒中，On-cell方法是指将触摸面板功能嵌入到彩色滤光片基板和偏光板之间。本申请以In-cell方法制备的显示面板10为例进行说明。其中，触控电极与公共电极通常采用同一电极结构，并采用分时驱动的方式进行驱动。由于触控芯片通道数量有限，而可分配的触控走线的数量较多，因此，会存在冗余的走线，可以将冗余的走线理解为辅助走线。由于辅助走线仅在显示面板的非显示区与公共信号线连接，而不对显示区的公共电极产生作用，且显示区的公共电极存在电压降，由此导致显示面板显示区的公共电压信号不稳定。
为了解决上述问题，本申请实施例对显示面板10的布线方式进行了改进。
示例性的，请结合图1并参阅图2，图2为图1所示的终端设备中显示面板的第一种结构示意图。显示面板10可以包括显示区A-A和非显示区B-B，非显示区B-B围绕显示区A-A设置，可以理解的是，非显示区B-B可以用来布线，同时，非显示区B-B可以用来与壳体20连接，也可以把非显示区B-B与壳体20连接的部分称为终端设备1的边框区。
示例性的，请结合图1和图2并参阅图3至图6，图3为图2所示的显示面板中第一部分结构的截面示意图，图4为图2所示的显示面板中第二部分结构的截面示意图，图5为图1所示的终端设备中显示面板的第二种结构示意图，图6为图1所示的终端设备中显示面板的第三种结构示意图。显示面板10还可以包括触控层11、触控芯片12和走线层13。触控层11可以包括阵列排布的多个触控电极110，多个触控电极110设置于显示区A-A。触控芯片12设置于非显示区B-B，触控芯片12可以包括多个触控引脚120。走线层13设置于触控层11的一侧，走线层13包括多条触控走线131和多个导线段132。多条触控走线131分别对应连接多个触控电极110和多个触控引脚120。也即是说，每一触控走线131分别连接一个触控电极110，以传输触控电极110的触控信号。多个导线段132与多条触控走线131同层设置，每一导线段132与触控电极110并联连接。通过将冗余的走线设置为多个导线段132的形式，且每一导线段132与触控电极110并联连接，也即是给每一触控电极110并联阻抗，这样会减小触控电极110和导线段132整体所传输的阻抗，进而减小触控电极110和导线段132引起的电压降，由于公共电极与触控电极110为分时驱动形式的共用电极，因此也即减小了公共电极和导线段132引起的电压降，进而提高了显示面板的显示区A-A内传输的公共电压信号的稳定性。
示例性的，显示面板10还包括像素层，像素层包括多个像素电极，多个像素电极在显示区A-A呈阵列排布。需要说明的是，像素层与触控层11位于不同层，且层叠设置。像素电极的数量大于触控电极110的数量，比如，1个触控电极110所占的区域与64个像素电极所占的区域面积相同，也即1个触控电极110对应64个像素电极设置。当然64个像素电极的数量仅是举例说明，而不应理解为对像素电极数量的限制。
换一角度来说，显示面板10还可以包括阵列基板30、彩膜基板40和液晶层50，彩膜基板40叠设于阵列基板30上，液晶层50设置于阵列基板30和彩膜基板40之间。触控层11也设置在阵列基板30和彩膜基板40之间，并且，触控层11可以集成于阵列基板30中。也即是说，本申请实施例的显示面板10是采用In-cell技术制成的触控显示一体的面板。
需要说明的是，对于触控信号的传输过程或者作用原理可以为：当用户触碰某一区域的触控电极110时，用户的手指与触控电极110之间形成电容，且电容会发生变化，也即是使用电容的变化来表征用户的触控信号，然后将触控信号传输至终端设备1的主控板，主控板根据触控信号的位置信息作出相应的提前设定的显示控制方案。
触控层11包括多个触控电极110，每一触控电极110的形状可以为方形片状，触控电极110的材料可以为透明材料，如氧化铟锡（Indium tin oxide，ITO），ITO通常为透明茶色或黄偏灰色。当然，触控电极110也可以为其他种类的透明材料，这里不作限制。在制作触控层11时，可以先铺设一层透明导电材料，然后将整面的导电材料进行分割以得到阵列排布的多个触控电极110。
其中，每一触控电极110均与触控芯片12连接，以将每一触控电极110处的信号传输至触控芯片12，再由触控芯片12传输至终端设备1的主控板，从而获得每一触控电极110处的信号变化情况。触控芯片12可以理解为信号转换站，当然，触控芯片12也可以为信号处理单元。
示例性的，触控芯片12可以包括多个触控引脚120，多个触控电极110和多个触控引脚120分别通过多条触控走线131连接。可以理解的是，一条触控走线131连接一个触控电极110和一个触控引脚120，这样设置可以较为方便的分辨出发生触控信号变化的触控电极110的位置，进而便于对其作出相应的显示控制方案。触控走线131与触控电极110设置于不同层，触控走线131与触控电极110的连接是通过设置过孔以及在过孔内设置连接导线而实现的。显示面板10还可以包括间隔层18，间隔层18设置于触控层11和多个导线段132之间。比如，间隔层18可以设置第二过孔134，第二过孔134内设置有第二连接导线15。每一触控走线131通过第二过孔134内的第二连接导线15分别与触控电极110连接。
示例性的，间隔层18对应每一触控电极110的区域设置有多个第二过孔134，每一触控走线131通过多个第二过孔134内的多条第二连接导线15与触控电极110连接。可以理解的是，将触控电极110通过多个连接点与触控走线131连接，可以增加连接的可靠性。第二连接导线15可以与触控走线131一体成型。比如，底层的触控电极110以及第二过孔134可以均在触控走线131制作之前进行制作，在制作触控走线131时，可以直接铺设一层导线金属或者ITO，导线金属或者ITO可以流动到第二过孔134中，进而实现与触控电极110的连接，之后再根据需要分割出多条触控走线131。
需要说明的是，在制作触控走线131时，由于触控芯片12的通道数量有限，而可分配的触控走线131的数量较多，因此，会有一部分触控走线131用作与触控引脚120连接，而其余部分触控走线131作为辅助走线。现有技术中，辅助走线通常用作在显示面板的非显示区与公共信号线连接，也即辅助走线自显示区到非显示区两端延伸，在非显示区通过过孔与公共信号线连接，而对显示面板显示区的公共电压信号没有作用，显示区的公共电压信号受显示区公共电极的阻抗影响，会存在公共电压信号不稳定的情况。
基于上述情况，本申请实施例对辅助走线的布置以及连接方式进行了改进。
示例性的，将每一辅助走线设置为包括多个导线段132，每一导线段132分别对应一个触控电极110设置，且每一导线段132与触控电极110并联连接。对每一触控电极110并联一个阻抗，可以使得触控电极110以及导线段132整体传输的阻抗减小，进而减小触控电极110与导线段132的电压降，由于触控电极110与公共电极是分时驱动的共用电极，因此可以使得显示面板10的显示区A-A内的公共电压信号稳定性提高。
示例性的，每一触控电极110对应设置有至少两个导线段132，每一导线段132位于两条触控走线131之间。每一触控电极110可以设置有两个、三个以及更多数量的导线段132，进而可以使得每一触控电极110所并联的阻抗更多，从而使得每一触控电极110所传输的阻抗减小，由此减小公共电极传输的阻抗，提高显示区A-A内的公共电压信号传输的稳定性。其中，每一列多个导线段132可以平行设置。比如，相邻两条触控走线131之间的多个导线段132平行设置。再比如，相邻两条触控走线131之间的多个导线段132设置在与触控走线131平行的直线上。这样可以方便对导线段132的制作，比如，辅助走线可以与触控走线131一同制作，每一辅助走线设置于相邻两条触控走线131之间，然后将辅助走线分割为多个不连续的导线段132。
示例性的，导线段132的宽度可以大于触控走线131的宽度。这样可以使得导线段132和触控电极110所传输的阻抗更小，进而使得公共电极的信号传输稳定性更高。示例性的，导线段132的长度可以小于或者等于触控电极110的长度，触控电极110的长度可以理解为在导线段132长度方向上的尺寸，由此可以减小不同触控电极110上的导线段132之间的相互干扰。
对于每一导线段132与触控电极110的连接也是通过设置过孔以及在过孔内设置连接导线实现的。示例性的，间隔层18对应每一导线段132设置有多个第一过孔133，每一第一过孔133内分别设置有第一连接导线14，导线段132通过第一过孔133内的第一连接导线14与触控电极110连接。第一连接导线14可以与导线段132一体成型。需要说明的是，导线段132通过多个第一过孔133与触控电极110并联连接，可以理解为触控电极110并联了多个阻抗，进而使得触控电极110所传输的阻抗更小，也即提高公共电压信号传输的稳定性更高。
示例性的，每一触控走线131的长度大于一条辅助走线的长度。可以理解的是，触控走线131为连续的线材，且在显示区A-A和非显示区B-B均有布置。而辅助走线为分段设置的，包括多个导线段132，因此，辅助走线的长度小于触控走线131的长度。
本申请实施例提供的显示面板10中，通过将辅助走线设置为多个导线段132的形式，且每一导线段132与触控电极110并联连接，也即是给每一触控电极110并联阻抗，这样会减小触控电极110和导线段132整体所传输的阻抗，进而减小触控电极110和导线段132引起的电压降，由于公共电极与触控电极110为分时驱动形式的共用电极，因此也即减小了公共电极和导线段132引起的电压降，进而提高了显示面板的显示区A-A内传输的公共电压信号的稳定性。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
在本申请的描述中，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特征。
以上对本申请实施例所提供的显示面板进行了详细介绍，本文中应用了具体个例对本申请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申请的方法及其核心思想；同时，对于本领域的技术人员，依据本申请的思想，在具体实施方式及应用范围上均会有改变之处，综上，本说明书内容不应理解为对本申请的限制。

Claims (20)

  1. 一种显示面板，其中，包括：
    触控层，包括阵列排布的多个触控电极；
    多条触控走线，每一所述触控走线分别连接一个所述触控电极，以传输所述触控电极的触控信号；以及
    多个导线段，与多条所述触控走线同层设置，每一所述导线段与所述触控电极并联连接。
  2. 根据权利要求1所述的显示面板，其中，所述显示面板还包括：
    间隔层，设置于所述触控层与多个所述导线段之间，所述间隔层对应每一所述导线段设置有多个第一过孔，每一所述第一过孔内分别设置有第一连接导线，每一所述导线段通过多个所述第一过孔内的第一连接导线与所述触控电极连接。
  3. 根据权利要求2所述的显示面板，其中，每一所述触控电极分别对应设置有至少两个导线段，每一所述导线段位于两条所述触控走线之间。
  4. 根据权利要求3所述的显示面板，其中，相邻两条所述触控走线之间的多个所述导线段平行设置。
  5. 根据权利要求4所述的显示面板，其中，相邻两条所述触控走线之间的多个所述导线段设置在与所述触控走线平行的直线上。
  6. 根据权利要求4所述的显示面板，其中，所述导线段的宽度大于所述触控走线的宽度。
  7. 根据权利要求5所述的显示面板，其中，所述导线段的长度小于或等于所述触控电极的长度。
  8. 根据权利要求2所述的显示面板，其中，所述第一连接导线与所述导线段一体成型。
  9. 根据权利要求2所述的显示面板，其中，所述间隔层还设置有第二过孔，所述第二过孔内设置有第二连接导线，每一所述触控走线通过所述第二过孔内的第二连接导线与所述触控电极连接。
  10. 根据权利要求9所述的显示面板，其中，所述第二连接导线与所述触控走线一体成型。
  11. 根据权利要求1所述的显示面板，其中，所述显示面板还包括显示区和围绕所述显示区设置的非显示区，多个所述触控电极设置于所述显示区。
  12. 根据权利要求11所述的显示面板，其中，所述显示面板还包括：
    触控芯片，设置于所述非显示区，所述触控芯片包括多个触控引脚，每一所述触控引脚分别连接一条所述触控走线。
  13. 根据权利要求9所述的显示面板，其中，所述显示面板还包括：
    阵列基板；
    彩膜基板，叠设于所述阵列基板上；以及
    液晶层，设置于所述阵列基板和所述彩膜基板之间；
    其中，所述触控层集成于所述阵列基板中。
  14. 根据权利要求1所述的显示面板，其中，所述显示面板还包括：
    走线层，设置于所述触控层的一侧，所述走线层包括多条所述触控走线和多个所述导线段。
  15. 根据权利要求1所述的显示面板，其中，所述触控电极能够与用户手指之间形成电容，使用所述电容的变化来表征所述触控电极的触控信号。
  16. 根据权利要求1所述的显示面板，其中，每一所述触控电极的形状为方形。
  17. 根据权利要求1所述的显示面板，其中，所述触控电极的材料为氧化铟锡。
  18. 根据权利要求1所述的显示面板，其中，所述触控电极与公共电极是分时驱动的共用电极。
  19. 根据权利要求1所述的显示面板，其中，所述显示面板还包括：
    多条辅助走线，每一所述辅助走线设置于相邻两条所述触控走线之间，每一所述辅助走线包括分段的位于同一直线上的多个导线段。
  20. 根据权利要求19所述的显示面板，其中，所述触控走线的长度大于所述辅助走线的长度。
PCT/CN2022/092708 2022-04-22 2022-05-13 显示面板 WO2023201794A1 (zh)

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