WO2019205484A1 - 触控显示面板 - Google Patents

触控显示面板 Download PDF

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Publication number
WO2019205484A1
WO2019205484A1 PCT/CN2018/107946 CN2018107946W WO2019205484A1 WO 2019205484 A1 WO2019205484 A1 WO 2019205484A1 CN 2018107946 W CN2018107946 W CN 2018107946W WO 2019205484 A1 WO2019205484 A1 WO 2019205484A1
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WO
WIPO (PCT)
Prior art keywords
signal transmission
transmission lines
electrically connected
signal
display panel
Prior art date
Application number
PCT/CN2018/107946
Other languages
English (en)
French (fr)
Inventor
邹恭华
严雅静
Original Assignee
武汉华星光电技术有限公司
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 武汉华星光电技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US16/308,807 priority Critical patent/US10824258B2/en
Publication of WO2019205484A1 publication Critical patent/WO2019205484A1/zh

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    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • 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
    • 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
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a touch display panel.
  • the touch panel provides a new human-computer interaction interface that is more direct and user-friendly.
  • the touch panel and the liquid crystal display panel are integrated to form a touch display panel, which can make the liquid crystal display panel have a touch function, and can perform an input operation through a finger, a stylus, etc., and the operation is more intuitive and simple.
  • the touch display panel can be divided into four types: resistive, capacitive, optical, and acoustic.
  • the current mainstream touch technology is capacitive.
  • the touch display panel can be divided into: an embedded touch display panel and an external touch display panel according to different structures.
  • the external touch display panel separately produces the touch panel and the liquid crystal display panel, and then is bonded together to form a display panel with a touch function.
  • the external touch display panel has high manufacturing cost and light transmittance. Lower, thicker modules and other shortcomings.
  • the embedded touch display panel embeds the touch panel function into the liquid crystal display panel, so that the liquid crystal display panel has the functions of displaying and sensing the touch input at the same time, and has lower cost and thickness than the external touch display panel. The advantages of thinner, etc., are favored by major panel manufacturers.
  • the embedded touch display panel is further divided into two types according to different positions of the touch circuit embedded in the liquid crystal display panel: the touch circuit is on the cell type (On Cell), and the other is the touch circuit in the liquid crystal cell type. (In Cell).
  • the touch layer is shared with the common electrode (Vcom) layer of the liquid crystal display panel, specifically, the common electrode layer covered by the entire surface is divided into a plurality of electrode units arranged in an array.
  • the plurality of electrode units are electrically connected to a Touch and Display Driver Integration (TDDI) through a lead wire.
  • TDDI Touch and Display Driver Integration
  • the frame time is divided into a display phase and a touch sensing phase.
  • the touch display driving integrated chip provides a common voltage signal (Vcom) to each electrode unit through a wire for screen display, and the touch display driving integrated chip provides a touch to each electrode unit through a lead during the touch sensing stage. Control the sensing signal for touch sensing.
  • the touch display driver integrated chip used in the In Cell touch display panel can only support a fixed number of resolutions.
  • the size of each electrode unit in the In Cell touch display panel can only be generally 3 mm ⁇ 3 mm to 5 mm ⁇ The change between 5mm, because if the area of a single electrode unit is too large, the touch sensitivity will be reduced. If the area of a single electrode unit is too small, the noise of the touch will increase correspondingly, so that the existing In Cell touch In the control display panel, after the size of the panel is determined, the number of rows and the number of columns of the electrode unit are also substantially determined, and the distribution pattern of the leads connecting each electrode unit is also basically determined, for example, as shown in FIG.
  • each of the electrode units 101 is electrically connected to two connection leads 102.
  • the two connection leads 102 are connected in parallel and connected to an output channel of the driving signal source 103 to be driven from the driving signal source. Obtaining a common voltage signal or a touch sensing signal of 103.
  • each of the above connections are respectively disposed corresponding to the area where the black matrix strips 105 are located between the adjacent two rows of color resisting blocks 104.
  • the adjacent two connecting leads 102 are spaced apart by a column of pixels, that is, three columns of color blocking blocks 106. .
  • the number of each column of electrode units 101 may be compared to the conventional one.
  • the design is increased or decreased. Accordingly, the number of connection leads 102 required for each column of electrode units 101 also needs to be increased or decreased, but the size of each electrode unit 101 itself does not change, so that the color block of each column electrode unit 101 corresponds to
  • the number of columns of 104 is also constant, which results in the number of connection leads 102 (i.e., the number of black matrix strips 105) in which the area corresponding to each column of electrode units 101 can be arranged, and the number of electrode units 101 included in each column of electrode units 101.
  • connection lead 102 In the case of mismatch, that is, after the connection lead 102 is connected to all the electrode units 101, a large number of dummy connection leads which are not connected to the electrode unit 101 remain, and in order to ensure the sensitivity and uniformity of the touch, the The fictitious connection leads also need to be electrically connected to the driving signal source 103, resulting in a large increase in the number of output channels (Chanel) of the driving signal source 103, and the connection. Said fan drive signal source 103 is increased denseness away line, increased manufacturing cost and difficulty.
  • An object of the present invention is to provide a touch display panel capable of reducing the number of channels of a driving signal source and the density of a fan-out area, thereby reducing production cost and production difficulty.
  • the present invention provides a touch display panel comprising: a display area and a non-display area located at a periphery of the display area;
  • the display area includes: a plurality of electrode units arranged in an array; and a plurality of signal transmission lines extending in a column direction arranged along the electrode unit;
  • the non-display area includes: an auxiliary signal line surrounding the display area, a driving signal source electrically connected to the auxiliary signal line, and a plurality of fan-out lines electrically connected to the driving signal source;
  • the signal transmission line includes: a plurality of main signal transmission lines electrically connected to the plurality of electrode units, and a plurality of fictitious signal lines electrically connected to the auxiliary signal lines, wherein the plurality of main signal transmission lines respectively pass through The plurality of fanout traces are electrically connected to the driving signal source;
  • the driving signal source is configured to provide a common voltage signal to the auxiliary signal line and the main signal transmission line during a display phase, and provide touch sensing to the auxiliary signal line and the main signal transmission line during a touch sensing phase signal.
  • the display area further includes: a plurality of color block blocks arranged in an array disposed opposite to the plurality of electrode units; and a black matrix located between adjacent color block blocks, each of the signal transmission lines being correspondingly located adjacent to each other A black matrix between the two columns of color blocks blocks.
  • Each adjacent two signal transmission lines is a group, two signal transmission lines in the same group are separated by two columns of color resistance blocks, and adjacent two signal transmission lines in different groups are separated by a column of color resistance blocks, and signals in the same group are located.
  • the transmission lines are all main signal transmission lines or all fictitious signal lines.
  • Each adjacent two signal transmission lines is a group, two signal transmission lines in the same group are separated by a column of color block, and two adjacent signal transmission lines in different groups are separated by a column of color block, and the signal transmission lines are located in the same group. Both are main signal transmission lines or all fictitious signal lines.
  • the two main signal transmission lines in the same group are electrically connected to the same electrode unit, and are electrically connected to the driving signal source through the same fan-out line.
  • a column of color blocking blocks is interposed between each adjacent two signal transmission lines.
  • Each of the electrode units is electrically connected to the two main signal transmission lines, and each of the main signal transmission lines is electrically connected to the driving signal source through a corresponding fan-out line.
  • the signal transmission line and the fan-out trace are both located in the first film layer, and the electrode unit and the auxiliary signal line are both located in the second film layer stacked with the first film layer.
  • the auxiliary signal line is located on the third film layer, and the signal transmission line and the fan-out trace are both located on the first film layer stacked on the third film layer, and the electrode units are both stacked on the first film layer.
  • the second film layer is located on the third film layer.
  • the driving signal source includes a plurality of first output channels and a second output channel, each of the first output channels is electrically connected to a fanout trace, and the second output channel is electrically connected to the auxiliary signal line.
  • the present invention provides a touch display panel.
  • the touch display panel includes: a display area and a non-display area located at a periphery of the display area; the display area includes: a plurality of electrode units arranged in an array; and a plurality of columns arranged along the electrode unit arranged in sequence a signal transmission line extending in a direction; the non-display area includes: an auxiliary signal line surrounding the display area, a driving signal source electrically connected to the auxiliary signal line, and a plurality of fans electrically connected to the driving signal source a signal transmission line includes: a plurality of main signal transmission lines electrically connected to the plurality of electrode units, and a plurality of fictitious signal lines electrically connected to the auxiliary signal lines, the plurality of main signal transmission lines The plurality of fan-out lines are electrically connected to the driving signal source respectively; and the plurality of imaginary signal lines are connected to the auxiliary signal line and then connected to the driving signal source, thereby implementing multiple paths through one output channel
  • 1 is a structural view of a conventional touch display panel
  • connection lead and a black matrix in a conventional touch display panel is a corresponding relationship diagram of a connection lead and a black matrix in a conventional touch display panel
  • FIG. 3 is a structural view of a first embodiment and a second embodiment of the touch display panel of the present invention.
  • FIG. 4 is a diagram showing a correspondence relationship between a signal transmission line and a black matrix in the first embodiment of the touch display panel of the present invention
  • FIG. 5 is a corresponding diagram of a signal transmission line and a black matrix in a second embodiment of the touch display panel of the present invention.
  • FIG. 6 is a structural diagram of a third embodiment of the touch display panel of the present invention.
  • FIG. 7 is a diagram showing a correspondence relationship between a signal transmission line and a black matrix in the third embodiment of the touch display panel of the present invention.
  • the present invention provides a touch display panel, comprising: a display area 10 and a non-display area 20 located at the periphery of the display area 10;
  • the display area 10 includes: a plurality of electrode units 11 arranged in an array, and a plurality of signal transmission lines 12 extending in a column direction arranged along the electrode unit 11;
  • the non-display area 20 includes: surrounding the display An auxiliary signal line 21 of the area 10, a driving signal source 22 electrically connected to the auxiliary signal line 21, and a plurality of fan-out lines 23 electrically connected to the driving signal source 22;
  • the signal transmission line 12 includes: a plurality of main signal transmission lines 121 electrically connected to the plurality of electrode units 11 and a plurality of fictitious signal lines 122 electrically connected to the auxiliary signal lines 21, wherein the plurality of main signal transmission lines 121 respectively pass the plurality of The fan fan outgoing line 23 is electrically connected to the driving signal source 22.
  • the driving signal source 22 is configured to provide a common voltage signal to the auxiliary signal line 21 and the main signal transmission line 121 during a display phase, and to the auxiliary signal line 21 and the main body during a touch sensing phase.
  • the signal transmission line 121 provides a touch sensing signal.
  • the upper and lower ends of the imaginary signal line 122 are electrically connected to the auxiliary signal line 21 .
  • the display area 10 further includes: a plurality of color block blocks 30 arranged in an array disposed opposite to the plurality of electrode units 11 and a black matrix 40 between adjacent color block blocks 30, each of which The signal transmission lines 12 are each blocked by a black matrix 40 located between the adjacent two columns of color block blocks 30.
  • Each color block block 30 is used to form one sub-pixel.
  • the plurality of color resist blocks 30 include red color block, green color block and blue color block which are sequentially arranged in the row direction.
  • the touch display panel includes: a first substrate and a second substrate disposed opposite to the first substrate.
  • the electrode unit 11, the signal transmission line 12, the auxiliary signal line 21, the driving signal source 22, and the fan-out line 23 are all disposed on the first substrate, and the color block 30 and the black matrix 40 are disposed on the first A liquid crystal layer is further disposed between the first substrate and the second substrate on the two substrates.
  • the auxiliary signal line 21 is located in the third film layer, and the signal transmission line 12 and the fan-out trace 23 are both located in the first film layer stacked with the third film layer.
  • the electrode units 11 are each located in a second film layer stacked with the first film layer, and a first insulating layer is formed between the first film layer and the second film layer, the first film layer and the third layer A second insulating layer is formed between the film layers, and the main signal transmission line 121 is electrically connected to the electrode unit 11 through a via hole passing through the first insulating layer, and the fictitious signal transmission line 122 passes through the The via of the second insulating layer is electrically connected to the auxiliary signal line 21.
  • the third film layer is a gate metal layer for forming a gate line and a gate of the touch display panel or a source/drain for forming a source line and a source and a drain of the touch display panel a metal layer, at this time, in order to prevent the auxiliary signal line 21 from being short-circuited with the source line or the gate line, when the auxiliary signal line 21 is located in the gate metal layer, the gate line is in the The position where the auxiliary signal line 21 intersects is bridged to the source/drain metal layer through the via hole to avoid short-circuiting with the auxiliary signal line 21, and when the auxiliary signal line 21 is located at the source/drain metal layer, The source line is bridged to the gate metal layer through the via at a position intersecting the auxiliary signal line 21 to avoid shorting with the auxiliary signal line 21.
  • the signal transmission line 12 and the fanout trace 23 are both located in the first film layer, and the electrode unit 11 and the auxiliary signal line 21 are both located on the first film layer.
  • a second film layer that is, the auxiliary signal line 21 is located in the same layer as the electrode unit 11, an insulating layer is formed between the first film layer and the second film layer, and the main signal transmission line 121 is worn through
  • the via hole passing through the insulating layer is electrically connected to the electrode unit 11
  • the imaginary signal transmission line 122 is electrically connected to the auxiliary signal line 21 through a via hole passing through the insulating layer.
  • auxiliary signal line 21 there is no problem of short-circuiting the auxiliary signal line 21 with the source line or the gate line, and the source line and the gate line may be in accordance with the prior art.
  • the formation of the auxiliary signal line 21 is only required by changing the pattern of the second film layer in which the electrode unit 11 is located.
  • the number and arrangement of the signal transmission lines 12 can be selected according to the number of the electrode units 11 in each column of the electrode units 11 and the number of signal transmission lines 12 that can be formed in the area corresponding to each column of the electrode units 11.
  • each adjacent two signal transmission lines 12 is a group, and two signal transmission lines 12 in the same group are separated by two columns of color blocking blocks. 30.
  • Two adjacent signal transmission lines 12 in different groups are separated by a column of color blocking blocks 30, and signal transmission lines 12 in the same group are both main signal transmission lines 121 or all fictitious signal lines 122, and two in the same group.
  • the main signal transmission line 121 is electrically connected to the same electrode unit 11 and electrically connected to the driving signal source 22 through the same fan-out line 23.
  • the three sets of signal transmission lines 12 that are consecutively arranged are one repeating unit, and the signal transmission lines 12 in the middle of one set of signal transmission lines 12 in the same repeating unit are all fictitious signal lines 122.
  • the signal transmission lines 12 in the two sets of signal transmission lines 12 on both sides are the main signal transmission lines 121.
  • each adjacent two signal transmission lines 12 is a group, and two signal transmission lines 12 in the same group are separated by a column of color blocking blocks 30.
  • the two adjacent signal transmission lines 12 located in different groups are also separated by a column of color block blocks 30, and the signal transmission lines 12 located in the same group are both the main signal transmission line 121 or the fictitious signal line 122.
  • the three sets of signal transmission lines 12 arranged in series are one repeating unit, and the signal transmission lines 12 in the middle of one set of signal transmission lines 12 in the same repeating unit are all fictitious signal lines 122.
  • the signal transmission lines 12 in the two sets of signal transmission lines 12 on both sides are the main signal transmission lines 121.
  • each column of the two signal transmission lines 12 is separated by a column of color blocking blocks 30, and each of the electrode units 11 is electrically connected to the two.
  • Each of the main signal transmission lines 121 is electrically connected to the driving signal source 22 through a corresponding fan-out line 23.
  • the three signal transmission lines 12 that are consecutively arranged are one repeating unit, and one of the signal transmission lines 12 in the middle of the same repeating unit is a fictitious signal line 122, and two signal transmission lines are located on both sides. 12 is the main signal transmission line 121.
  • the driving signal source 22 includes a plurality of first output channels 221 and a second output channel 222 , and each of the first output channels 221 is electrically connected to a fan-out trace 23 .
  • the second output channel 222 is electrically connected to the auxiliary signal line 21, and each of the fan-out lines 23 connects one main signal transmission line 121 or two main signal transmission lines 122 as needed.
  • the signal on the auxiliary signal line 21 and the waveform of the signal on the main signal transmission line 121 are always consistent, so that the main signal transmission line 121
  • the signal signals on the signal and the imaginary signal line 122 are always maintained.
  • the signal 122 provides a reduction in the number of channels of the drive signal source 22 and the trace density of the fan-out area, reducing production costs and production difficulty.
  • the touch display panel includes: a display area and a non-display area located at a periphery of the display area; the display area includes: a plurality of electrode units arranged in an array; and a plurality of columns arranged along the electrode unit arranged in sequence a signal transmission line extending in a direction; the non-display area includes: an auxiliary signal line surrounding the display area, a driving signal source electrically connected to the auxiliary signal line, and a plurality of fans electrically connected to the driving signal source a signal transmission line includes: a plurality of main signal transmission lines electrically connected to the plurality of electrode units, and a plurality of fictitious signal lines electrically connected to the auxiliary signal lines, the plurality of main signal transmission lines The plurality of fan-out lines are electrically connected to the driving signal source respectively; and the plurality of imaginary signal lines are connected to the auxiliary signal line and then connected to the driving signal source, thereby implementing multiple paths through one output channel

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Nonlinear Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Mathematical Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Position Input By Displaying (AREA)

Abstract

本发明提供一种触控显示面板。所述触控显示面板包括：显示区以及位于所述显示区外围的非显示区；所述显示区包括：阵列排布的多个电极单元以及依次排列的多条沿所述电极单元排列的列方向延伸的信号传输线；所述非显示区包括：包围所述显示区的辅助信号线、与所述辅助信号线电性连接的驱动信号源以及与所述驱动信号源电性连接的多条扇出走线；所述信号传输线包括：分别与所述多个电极单元电性连接的多条主信号传输线以及与所述辅助信号线电性连接的多条虚构信号线，所述多条主信号传输线分别通过所述多条扇出走线与所述驱动信号源电性连接；能够减少驱动信号源的通道数量及扇出区的走线密度，降低生产成本和生产难度。

Description

触控显示面板 技术领域
本发明涉及显示技术领域，尤其涉及一种触控显示面板。
背景技术
触控面板(Touch panel)提供了一种新的人机互动界面，其在使用上更直接、更人性化。将触控面板与液晶显示面板整合在一起，形成触控显示面板，能够使液晶显示面板具有触控功能，可通过手指、触控笔等执行输入操作，操作更加直观和简便。
触控显示面板根据感应技术不同可分为电阻式、电容式、光学式、音波式四种，目前主流的触控技术为电容式。触控显示面板根据结构不同可划分为：嵌入式触控显示面板和外挂式触控显示面板。其中，外挂式触控显示面板是将触控面板与液晶显示面板分开生产，然后贴合到一起成为具有触控功能的显示面板，外挂式触控显示面板存在制作成本较高、光透过率较低、模组较厚等缺点。嵌入式触控显示面板是将触控面板功能嵌入到液晶显示面板内，使得液晶显示面板同时具备显示和感知触控输入的功能，相比于外挂式触控显示面板，具有成本较低、厚度较薄等优点，受到各大面板厂家青睐。
进一步地，嵌入式触控显示面板按照触控电路嵌入液晶显示面板中位置的不同又分为：触控电路在液晶盒上型(On Cell)，另一种是触控电路在液晶盒内型(In Cell)。与On Cell触控显示面板相比，In Cell触控显示面板能够实现面板的更轻薄化，为广大手机生产厂商采用，已演化为未来触控技术的主要发展方向。在In cell触控显示面板中，其触控层与液晶显示面板的公共电极(Vcom)层是共用的，具体为将原本整面覆盖的公共电极层分割成阵列排布的多个电极单元，所述多个电极单元分别通过引线电性连接至一触控显示驱动集成芯片(Touch and Display Driver Integration，TDDI)，驱动时，将一帧时间划分为一显示阶段和触控感测阶段，在显示阶段，所述触控显示驱动集成芯片通过引线向各个电极单元提供公共电压信号(Vcom)进行画面显示，在触控感测阶段所述触控显示驱动集成芯片通过引线向各个电极单元提供触控感测信号进行触控感测。
一般In Cell触控显示面板使用的触控显示驱动集成芯片仅能支持固定几种的分辨率，In Cell触控显示面板中各个电极单元的的尺寸的一般也只 能在3mm×3mm～5mm×5mm之间变化，因为若单个电极单元面积过大，其触控灵敏度会降低，若单个电极单元面积过小，触控的噪音(noise)干扰相应会增大，从而在现有的In Cell触控显示面板中，在面板的尺寸确定后，其电极单元的行数与列数也基本确定，连接每一个电极单元的引线的分布方式也基本确定，例如图1所示，现有的一种In cell触控显示面板中，每一个电极单元101均对应电性连接两条连接引线102，该两条连接引线102并联后接入驱动信号源103的一个输出通道，以从所述驱动信号源103的获取公共电压信号或触控感测信号，进一步地，如图2所示，为了避免连接引线102遮光，影响显示面板的开口率，上述的每一条连接引线102均对应于位于相邻的两列色阻块104之间的黑色矩阵条105所在的区域设置，相邻的两条连接引线102的之间均间隔一列像素即间隔三列色阻块106。
而当触控显示面板的分辨率为特殊分辨率、所述触控显示面板的尺寸较大或所述触控显示面板为异形设计时，可能会导致每一列电极单元101的数量相比于传统设计增加或减少，相应地，每一列电极单元101需要的连接引线102的数量也需要增加或减少，但每一个电极单元101本身的尺寸并不变化，从而每一列电极单元101对应的色阻块104的列数也是不变，这就会出现每一列电极单元101对应的区域能够排列的连接引线102的数量(即黑色矩阵条105的数量)与每一列电极单元101包含的电极单元101的数量不匹配的情况，即连接引线102连接完所有的电极单元101后仍剩余大量不与所述电极单元101相连的虚构(Dummy)连接引线，此时为了保证触控的灵敏性和均匀性，该些虚构连接引线也需要与驱动信号源103电性连接，造成驱动信号源103的输出通道(Chanel)数量大量增加，以及连接所述驱动信号源103的扇出走线的密集程度增大，制程成本和难度增大。
发明内容
本发明的目的在于提供一种触控显示面板，能够减少驱动信号源的通道数量及扇出区的走线密度，降低生产成本和生产难度。
为实现上述目的，本发明提供了一种触控显示面板，包括：显示区以及位于所述显示区外围的非显示区；
所述显示区包括：阵列排布的多个电极单元以及依次排列的多条沿所述电极单元排列的列方向延伸的信号传输线；
所述非显示区包括：包围所述显示区的辅助信号线、与所述辅助信号线电性连接的驱动信号源以及与所述驱动信号源电性连接的多条扇出走线；
所述信号传输线包括：分别与所述多个电极单元电性连接的多条主信号传输线以及与所述辅助信号线电性连接的多条虚构信号线，所述多条主信号传输线分别通过所述多条扇出走线与所述驱动信号源电性连接；
所述驱动信号源用于在显示阶段向所述辅助信号线和所述主信号传输线提供公共电压信号，在触控感测阶段向所述辅助信号线和所述主信号传输线提供触控感测信号。
所述显示区还包括：与所述多个电极单元相对设置的阵列排布的多个色阻块以及位于相邻的色阻块之间的黑色矩阵，每一条信号传输线均对应被位于相邻两列的色阻块之间的一条黑色矩阵遮挡。
每相邻的两条信号传输线为一组，同一组中的两条信号传输线间隔两列色阻块，位于不同组中的相邻的两条信号传输线间隔一列色阻块，位于同一组的信号传输线均为主信号传输线或均为虚构信号线。
每相邻的两条信号传输线为一组，同一组中的两条信号传输线间隔一列色阻块，位于不同组中的相邻的两条信号传输线间隔一列色阻块，位于同一组的信号传输线均为主信号传输线或均为虚构信号线。
位于同一组中的两条主信号传输线电性连接同一个电极单元，且通过同一条扇出走线与所述驱动信号源电性连接。
每相邻的两条信号传输线之间均间隔一列色阻块。
每一个电极单元电性连接两条主信号传输线，每一条主信号传输线均通过一条对应的扇出走线与所述驱动信号源电性连接。
所述信号传输线及扇出走线均位于第一膜层，所述电极单元和辅助信号线均位于与所述第一膜层层叠的第二膜层。
所述辅助信号线位于第三膜层，所述信号传输线及扇出走线均位于与所述第三膜层层叠的第一膜层，所述电极单元均位于与所述第一膜层层叠的第二膜层。
所述驱动信号源包括多个第一输出通道和一个第二输出通道，每一个第一输出通道电性连接一条扇出走线，所述第二输出通道电性连接辅助信号线。
本发明的有益效果：本发明提供一种触控显示面板。所述触控显示面板包括：显示区以及位于所述显示区外围的非显示区；所述显示区包括：阵列排布的多个电极单元以及依次排列的多条沿所述电极单元排列的列方向延伸的信号传输线；所述非显示区包括：包围所述显示区的辅助信号线、与所述辅助信号线电性连接的驱动信号源以及与所述驱动信号源电性连接的多条扇出走线；所述信号传输线包括：分别与所述多个电极单元电性连 接的多条主信号传输线以及与所述辅助信号线电性连接的多条虚构信号线，所述多条主信号传输线分别通过所述多条扇出走线与所述驱动信号源电性连接；通过将所述多条虚构信号线均连接到辅助信号线上再连接至驱动信号源，实现通过一个输出通道向多个虚构信号线提供信号，能够减少驱动信号源的通道数量及扇出区的走线密度，降低生产成本和生产难度。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为现有的触控显示面板的结构图；
图2为现有的触控显示面板中连接引线与黑色矩阵的对应关系图；
图3为本发明的触控显示面板的第一实施例和第二实施例的结构图；
图4为本发明的触控显示面板的第一实施例中信号传输线与黑色矩阵的对应关系图；
图5为本发明的触控显示面板的第二实施例中信号传输线与黑色矩阵的对应关系图；
图6为本发明的触控显示面板的第三实施例的结构图；
图7为本发明的触控显示面板的第三实施例中信号传输线与黑色矩阵的对应关系图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图3或图6，本发明提供一种触控显示面板，包括：显示区10以及位于所述显示区10外围的非显示区20；
所述显示区10包括：阵列排布的多个电极单元11以及依次排列的多条沿所述电极单元11排列的列方向延伸的信号传输线12；所述非显示区20包括：包围所述显示区10的辅助信号线21、与所述辅助信号线21电性连接的驱动信号源22以及与所述驱动信号源22电性连接的多条扇出走线23；所述信号传输线12包括：分别与所述多个电极单元11电性连接的多条主信号传输线121以及与所述辅助信号线21电性连接的多条虚构信号线 122，所述多条主信号传输线121分别通过所述多条扇出走线23与所述驱动信号源22电性连接。
具体地，所述驱动信号源22用于在显示阶段向所述辅助信号线21和所述主信号传输线121提供公共电压信号，在触控感测阶段向所述辅助信号线21和所述主信号传输线121提供触控感测信号。
具体地，如图3或图6所示，所述虚构信号线122的上下两端均与所述辅助信号线21电性连接。
具体地，所述显示区10还包括：与所述多个电极单元11相对设置的阵列排布的多个色阻块30以及位于相邻的色阻块30之间的黑色矩阵40，每一条信号传输线12均对应被位于相邻两列的色阻块30之间的一条黑色矩阵40遮挡。每一个色阻块30用于形成一个子像素。
优选地，所述多个色阻块30包括在行方向上依次重复排列的红色色阻块、绿色色阻块及蓝色色阻块。
具体地，触控显示面板包括：第一基板以及与所述第一基板相对设置的第二基板。优选地，所述电极单元11、信号传输线12、辅助信号线21、驱动信号源22以及扇出走线23均设于所述第一基板上，所述色阻块30及黑色矩阵40设于第二基板上，所述第一基板与所述第二基板之间还设有液晶层。
具体地，在本发明的一些实施例中，所述辅助信号线21位于第三膜层，所述信号传输线12及扇出走线23均位于与所述第三膜层层叠的第一膜层，所述电极单元11均位于与所述第一膜层层叠的第二膜层，所述第一膜层和第二膜层之间形成有第一绝缘层，所述第一膜层和第三膜层之间形成有第二绝缘层，所述主信号传输线121通过穿过所述第一绝缘层的过孔与所述电极单元11电性连接，所述虚构信号传输线122通过穿过所述第二绝缘层的过孔与所述辅助信号线21电性连接。
进一步地，所述第三膜层为用于形成触控显示面板的栅极线及栅极的栅极金属层或用于形成所述触控显示面板的源极线及源漏极的源漏极金属层，此时，为了避免所述辅助信号线21与所述源极线或栅极线短接，当所述辅助信号线21位于栅极金属层时，所述栅极线在与所述辅助信号线21相交的位置会通过过孔跨接至源漏极金属层以避免与所述辅助信号线21短接，而当所述辅助信号线21位于源漏极金属层时，所述源极线在与所述辅助信号线21相交的位置会通过过孔跨接至栅极金属层以避免与所述辅助信号线21短接。
具体地，在本发明的另一实施例中，所述信号传输线12及扇出走线23 均位于第一膜层，所述电极单元11和辅助信号线21均位于与所述第一膜层层叠的第二膜层，也即所述辅助信号线21与所述电极单元11位于同一层，所述第一膜层和第二膜层之间形成有绝缘层，所述主信号传输线121通过穿过所述绝缘层的过孔与所述电极单元11电性连接，所述虚构信号传输线122通过穿过所述绝缘层的过孔与所述辅助信号线21电性连接。
进一步地，在上述的另一些实施例中，不存在与所述辅助信号线21与所述源极线或栅极线短接的问题，所述源极线和栅极线可按照现有技术直接形成，而辅助信号线21的形成仅需要通过改变电极单元11所在的第二膜层的图案即可。
具体实施时，所述信号传输线12的数量及排列方式可根据每一列电极单元11中的电极单元11的数量以及每一列电极单元11所对应的区域能够形成的信号传输线12的数量进行选择。
可选地，图3及图4所示，在本发明的第一实施例中，每相邻的两条信号传输线12为一组，同一组中的两条信号传输线12间隔两列色阻块30，位于不同组中的相邻的两条信号传输线12间隔一列色阻块30，位于同一组的信号传输线12均为主信号传输线121或均为虚构信号线122，位于同一组中的两条主信号传输线121电性连接同一个电极单元11，且通过同一条扇出走线23与所述驱动信号源22电性连接。进一步地，在本发明的第一实施例中，连续排列的三组信号传输线12为一个重复单元，同一个重复单元中位于中间的一组信号传输线12中的信号传输线12均为虚构信号线122，位于两侧的两组信号传输线12中的信号传输线12均为主信号传输线121。
可选地，图3及图5所示，在本发明的第二实施例中，每相邻的两条信号传输线12为一组，同一组中的两条信号传输线12间隔一列色阻块30，位于不同组中的相邻的两条信号传输线12也间隔一列色阻块30，位于同一组的信号传输线12均为主信号传输线121或均为虚构信号线122。进一步地，在本发明的第二实施例中，连续排列的三组信号传输线12为一个重复单元，同一个重复单元中位于中间的一组信号传输线12中的信号传输线12均为虚构信号线122，位于两侧的两组信号传输线12中的信号传输线12均为主信号传输线121。
可选地，图6及图7所示，在本发明的第三实施例中，每相邻的两条信号传输线12之间均间隔一列色阻块30，每一个电极单元11电性连接两条主信号传输线121，每一条主信号传输线121均通过一条对应的扇出走线23与所述驱动信号源22电性连接。进一步地，在本发明的第三实施例中，连续排列的三条信号传输线12为一个重复单元，同一个重复单元中位于中 间的一条信号传输线12为虚构信号线122，位于两侧两条信号传输线12均为主信号传输线121。
具体地，如图3及图6所示，所述驱动信号源22包括多个第一输出通道221和一个第二输出通道222，每一个第一输出通道221电性连接一条扇出走线23，所述第二输出通道222电性连接辅助信号线21，每一扇出走线23根据需要连接一条主信号传输线121或两条主信号传输线122。
需要强调的是，本发明的触控显示面板工作时，所述辅助信号线21上的信号与所述主信号传输线121上的信号的波形始终保持一致，从而使得所述主信号传输线121上的信号和虚构信号线122上的波形信号始终保持，通过将所述多条虚构信号线122均连接到辅助信号线21上再连接至驱动信号源22，实现通过一个输出通道向多个虚构信号线122提供信号，能够减少驱动信号源22的通道数量及扇出区的走线密度，降低生产成本和生产难度。
综上所述，本发明提供一种触控显示面板。所述触控显示面板包括：显示区以及位于所述显示区外围的非显示区；所述显示区包括：阵列排布的多个电极单元以及依次排列的多条沿所述电极单元排列的列方向延伸的信号传输线；所述非显示区包括：包围所述显示区的辅助信号线、与所述辅助信号线电性连接的驱动信号源以及与所述驱动信号源电性连接的多条扇出走线；所述信号传输线包括：分别与所述多个电极单元电性连接的多条主信号传输线以及与所述辅助信号线电性连接的多条虚构信号线，所述多条主信号传输线分别通过所述多条扇出走线与所述驱动信号源电性连接；通过将所述多条虚构信号线均连接到辅助信号线上再连接至驱动信号源，实现通过一个输出通道向多个虚构信号线提供信号，能够减少驱动信号源的通道数量及扇出区的走线密度，降低生产成本和生产难度。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (10)

  1. 一种触控显示面板，包括：显示区以及位于所述显示区外围的非显示区；
    所述显示区包括：阵列排布的多个电极单元以及依次排列的多条沿所述电极单元排列的列方向延伸的信号传输线；
    所述非显示区包括：包围所述显示区的辅助信号线、与所述辅助信号线电性连接的驱动信号源以及与所述驱动信号源电性连接的多条扇出走线；
    所述信号传输线包括：分别与所述多个电极单元电性连接的多条主信号传输线以及与所述辅助信号线电性连接的多条虚构信号线，所述多条主信号传输线分别通过所述多条扇出走线与所述驱动信号源电性连接；
    所述驱动信号源用于在显示阶段向所述辅助信号线和所述主信号传输线提供公共电压信号，在触控感测阶段向所述辅助信号线和所述主信号传输线提供触控感测信号。
  2. 如权利要求1所述的触控显示面板，其中，所述显示区还包括：与所述多个电极单元相对设置的阵列排布的多个色阻块以及位于相邻的色阻块之间的黑色矩阵，每一条信号传输线均对应被位于相邻两列的色阻块之间的一条黑色矩阵遮挡。
  3. 如权利要求2所述的触控显示面板，其中，每相邻的两条信号传输线为一组，同一组中的两条信号传输线间隔两列色阻块，位于不同组中的相邻的两条信号传输线间隔一列色阻块，位于同一组的信号传输线均为主信号传输线或均为虚构信号线。
  4. 如权利要求2所述的触控显示面板，其中，每相邻的两条信号传输线为一组，同一组中的两条信号传输线间隔一列色阻块，位于不同组中的相邻的两条信号传输线间隔一列色阻块，位于同一组的信号传输线均为主信号传输线或均为虚构信号线。
  5. 如权利要求3所述的触控显示面板，其中，位于同一组中的两条主信号传输线电性连接同一个电极单元，且通过同一条扇出走线与所述驱动信号源电性连接。
  6. 如权利要求2所述的触控显示面板，其中，每相邻的两条信号传输线之间均间隔一列色阻块。
  7. 如权利要求6所述的触控显示面板，其中，每一个电极单元电性连接两条主信号传输线，每一条主信号传输线均通过一条对应的扇出走线与 所述驱动信号源电性连接。
  8. 如权利要求1所述的触控显示面板，其中，所述信号传输线及扇出走线均位于第一膜层，所述电极单元和辅助信号线均位于与所述第一膜层层叠的第二膜层。
  9. 如权利要求1所述的触控显示面板，其中，所述辅助信号线位于第三膜层，所述信号传输线及扇出走线均位于与所述第三膜层层叠的第一膜层，所述电极单元均位于与所述第一膜层层叠的第二膜层。
  10. 如权利要求1所述的触控显示面板，其中，所述驱动信号源包括多个第一输出通道和一个第二输出通道，每一个第一输出通道电性连接一条扇出走线，所述第二输出通道电性连接辅助信号线。
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