WO2020248300A1 - Panneau d'affichage tactile en cellule et son substrat de réseau - Google Patents

Panneau d'affichage tactile en cellule et son substrat de réseau Download PDF

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Publication number
WO2020248300A1
WO2020248300A1 PCT/CN2019/092514 CN2019092514W WO2020248300A1 WO 2020248300 A1 WO2020248300 A1 WO 2020248300A1 CN 2019092514 W CN2019092514 W CN 2019092514W WO 2020248300 A1 WO2020248300 A1 WO 2020248300A1
Authority
WO
WIPO (PCT)
Prior art keywords
touch
display panel
trace
array substrate
metal layer
Prior art date
Application number
PCT/CN2019/092514
Other languages
English (en)
Chinese (zh)
Inventor
薛凯文
邹恭华
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
Publication of WO2020248300A1 publication Critical patent/WO2020248300A1/fr

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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
    • G06F3/0412—Digitisers structurally integrated in a display
    • 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

Definitions

  • the present invention relates to the field of display technology, in particular to an in-cell touch display panel and an array substrate thereof.
  • touch screen panels have gradually spread throughout people's lives.
  • touch screens can be divided into: Add on Mode Touch Panel (Add on Mode Touch Panel) and In Cell Touch Panel according to their composition structure.
  • the plug-in touch screen is produced separately from the touch screen and the liquid crystal display (LCD), and then laminated together to become a touch-sensitive LCD display, which has higher production costs, lower light transmittance, and Shortcomings such as thicker modules.
  • the in-cell touch screen embeds the touch electrodes of the touch screen inside the liquid crystal display, which can reduce the overall thickness of the module and greatly reduce the production cost of the touch screen, which is favored by major panel manufacturers.
  • the array substrate in the traditional in-cell touch display panel mainly includes a glass substrate and a first metal layer (M1), a first insulating layer, a second metal layer (M2), and a second insulating layer stacked on the glass substrate.
  • the first metal layer forms multiple scan lines
  • the second metal layer forms multiple data lines
  • the common electrode layer forms multiple touch electrodes (sensor pads) distributed in an array
  • the third metal layer forms multiple connection touch electrodes.
  • the connection traces between the electrodes and the touch detection chip are used as touch traces.
  • the touch electrodes are connected to the corresponding connection traces through the vias on the third insulating layer. Each touch electrode needs to pass through a corresponding touch trace Connect to the corresponding channel of the touch detection chip.
  • each double touch trace includes two connection traces connected to the same touch electrode, and the two connection traces are connected in parallel to the same corresponding channel of the touch detection chip.
  • the total number of connection wires connecting the touch electrodes and the touch detection chip is 64.
  • Each dual touch trace 1 includes two connection traces 2 connected to the corresponding same touch electrode.
  • the two connection traces 2 Connect in parallel to the same corresponding channel of the touch detection chip.
  • a part of the spacers will be located in the RG sub-pixel (R sub-pixel 5 in Figure 1). Between the G sub-pixel and G sub-pixel 5), a part of the spacer will be located between the RB sub-pixel (B sub-pixel 10 and R sub-pixel 11 in Figure 1). Due to the filterability of the spacers to light of different wavelengths, it will cause The two types of pixels emit different lights, which form vertical vertical stripes (mura).
  • a single touch trace refers to a touch trace formed by a connection trace formed by a single third metal layer.
  • the single connecting wire is connected to the corresponding touch electrode and connected to the corresponding channel of the touch detection chip.
  • the object of the present invention is to provide an in-cell touch display panel and an array substrate thereof, and to design a new type of wiring method for touch screen touch wiring to reduce the risk of vertical stripes.
  • the present invention provides an array substrate of an in-cell touch display panel, including: a glass substrate, and a first metal layer, a second metal layer, a third metal layer, and a first metal layer stacked on the glass substrate.
  • Common electrode layer the first metal layer is formed with a plurality of scan lines extending in a first direction; the second metal layer is formed with a plurality of data lines extending in a second direction; the third metal layer is formed with a plurality of Touch traces extending along the second direction; the second direction and the first direction are perpendicular to each other;
  • the common electrode layer forms a plurality of touch electrodes distributed in an array;
  • the touch traces include a plurality of Double touch traces, the touch electrodes of the touch electrodes far away from the touch detection chip are connected to the corresponding channels of the touch detection chip through the corresponding double touch traces;
  • the touch trace also includes a plurality of first touch traces, and the touch electrodes adjacent to the touch detection chip among the touch electrodes are connected to the touch
  • each first touch trace is formed by a single touch trace and the corresponding accessory connection trace, and the single touch trace and the corresponding accessory connection trace are electrically connected to
  • the corresponding touch electrodes are connected in parallel, and the size of the auxiliary connection trace in the second direction is close to the size of the corresponding touch electrode in the second direction.
  • a first insulating layer is provided between the first metal layer and the second metal layer; a second insulating layer is provided between the second metal layer and the third metal layer; and the third metal layer A third insulating layer is provided between the common electrode layer.
  • the touch trace is connected to the touch sensing electrode through a via hole on the third insulating layer.
  • the shape of the auxiliary connecting wire is substantially straight in the second direction.
  • the size of the auxiliary connection trace in the second direction is slightly larger than the size of the corresponding touch electrode in the second direction, and the auxiliary connection trace does not correspond to the corresponding touch in the second direction.
  • the adjacent touch electrodes overlap.
  • the auxiliary connecting wire is connected to the corresponding single touch wire to form a rectangular opening.
  • the size of the auxiliary connection trace in the first direction is much smaller than the size in the second direction.
  • the size of the auxiliary connection trace in the first direction is smaller than the spacing between the touch traces.
  • the present invention also provides an in-cell touch display panel, including the array substrate of the in-cell touch display panel described in any one of the foregoing.
  • the in-cell touch display panel and the array substrate of the present invention reduce the risk of vertical stripes, at the same time improve the variation of touch electrodes, and reduce the variability of touch electrodes.
  • FIG. 1 is a schematic diagram of dual touch wires in the prior art
  • FIG. 2 is a schematic diagram of a touch wiring design of a preferred embodiment of the in-cell touch display panel of the present invention.
  • the array substrate of the in-cell touch display panel of the present invention is designed with a new type of touch screen touch wiring method, which optimizes the design scheme of using single touch wiring and double touch wiring to mix and match.
  • the key point is the routing method of the touch trace formed by the third layer of metal in the array substrate.
  • the array substrate of the in-cell touch display panel of the present invention mainly includes: a glass substrate and a first metal layer, a second metal layer, a third metal layer and a common electrode layer laminated on the glass substrate;
  • the metal layer is formed with a plurality of scan lines extending in the first direction;
  • the second metal layer is formed with a plurality of data lines extending in the second direction;
  • the third metal layer is formed with a plurality of contacts extending in the second direction
  • the second direction and the first direction are perpendicular to each other;
  • the common electrode layer forms a plurality of touch electrodes distributed in an array; each of the touch electrodes is electrically connected through a corresponding touch wire
  • the touch trace includes a plurality of double touch traces, and the touch electrode on the side far from the touch detection chip of the touch electrode passes through the corresponding
  • the two touch traces are connected to the corresponding channels of the touch detection chip;
  • the touch traces also include a
  • the size of the auxiliary connection trace in the second direction is the same as that of the corresponding contact trace.
  • the size of the control electrode in the second direction is close.
  • a first insulating layer may be provided between the first metal layer and the second metal layer.
  • a second insulating layer may be provided between the second metal layer and the third metal layer.
  • a third insulating layer may be provided between the third metal layer and the common electrode layer.
  • the touch trace may be connected to the touch sensing electrode through a via provided in the third insulating layer. It may further include a fourth insulating layer, a pixel electrode layer and other structures.
  • FIG. 2 is a schematic diagram of the touch wiring design of a preferred embodiment of the in-cell touch display panel of the present invention.
  • the common electrode layer forms a plurality of touch electrodes 40 distributed in an array; the touch electrodes 40 are electrically connected to the corresponding channels of the touch detection chip 10 through the corresponding touch traces;
  • the control traces include common double touch traces 20, and the touch electrodes 40 on the side far away from the touch detection chip 10 of the touch electrodes 40 are connected to all of the touch electrodes 40 through corresponding double touch traces 20.
  • the touch trace 30 is connected to the corresponding channel of the touch detection chip; each first touch trace 30 is formed by a single touch trace 31 and a corresponding auxiliary connection trace 32, the single touch trace
  • the trace 31 and the corresponding auxiliary connection trace 32 are respectively electrically connected to the corresponding touch electrode 40 and then connected in parallel.
  • the size of the auxiliary connection trace 32 in the second direction is the same as that of the corresponding touch electrode 40. The size in the second direction is close.
  • the shape of the auxiliary connecting wire 32 is substantially straight in the second direction.
  • the size of the auxiliary connecting wire 32 in the second direction may be slightly larger than the size of the corresponding touch electrode 40 in the second direction, and the auxiliary connecting wire 32 does not correspond to the upper and lower sides of the corresponding touch electrode 40 in the second direction.
  • the adjacent touch electrodes 40 overlap.
  • the auxiliary connecting wire 32 is connected to the corresponding single touch wire 31 to form a rectangular opening.
  • the size of the auxiliary connecting wire 32 in the first direction is much smaller than the size in the second direction; the size of the auxiliary connecting wire 32 in the first direction is smaller than the spacing between the touch wires on the touch electrode 40.
  • the design scheme of the present invention can avoid the following two situations at the same time: the formation of vertical vertical stripes are uneven in brightness and darkness, and the difference in the magnitude of variation between different touch electrodes is caused, and the linear result of the touch screen is deteriorated.
  • each touch electrode 40 can correspond to 60 rows*60 columns of pixels, and the touch screen can be far away from the touch detection chip 10 side
  • the 27 channels of the two use conventional double touch traces 20 as touch traces, and the five channels adjacent to the side of the touch detection chip 10 can use the first touch trace 30 shown in FIG. 2
  • the variation value of the touch electrode 40 on the side adjacent to the touch detection chip 10 is also the same as that of the touch electrode 40 connected to the conventional double touch trace 20.
  • the present invention also provides an in-cell touch display panel including the array substrate.
  • the present invention increases the flexibility of touch screen design for panels with different resolutions, and also improves the selectivity of touch screen solutions; on the other hand, it can improve the display effect of the screen, improve product quality and product brand competitiveness; Reducing the risk of vertical stripes to a minimum can greatly improve the difference value of the touch electrode and reduce the difference of the touch electrode.

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

Abstract

La présente invention concerne un panneau d'affichage tactile en cellule et un substrat de réseau associé. Le substrat de réseau d'un panneau d'affichage tactile en cellule comprend : des lignes de balayage s'étendant dans une première direction ; des lignes de données s'étendant dans une seconde direction ; des fils tactiles s'étendant dans la seconde direction ; et de multiples électrodes tactiles réparties dans un réseau et formées dans une couche d'électrode commune. Une électrode tactile distante d'un côté puce de détection tactile dans les électrodes tactiles est connectée à un canal correspondant de la puce de détection tactile au moyen de doubles fils tactiles correspondants ; une électrode tactile adjacente au côté puce de détection tactile dans les électrodes tactiles est connectée à un canal correspondant de la puce de détection tactile au moyen d'un premier fil tactile correspondant ; le premier fil tactile est formé par un seul fil tactile et un fil de connexion auxiliaire correspondant. La présente invention concerne également un panneau d'affichage correspondant. Le panneau d'affichage tactile en cellule et son substrat de réseau selon la présente invention réduisent le risque d'apparition de lignes verticales à un minimum, améliorent la valeur de variation d'électrodes tactiles et réduisent la différence des électrodes tactiles.
PCT/CN2019/092514 2019-06-10 2019-06-24 Panneau d'affichage tactile en cellule et son substrat de réseau WO2020248300A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910498196.4A CN110262689B (zh) 2019-06-10 2019-06-10 内嵌式触控显示面板及其阵列基板
CN201910498196.4 2019-06-10

Publications (1)

Publication Number Publication Date
WO2020248300A1 true WO2020248300A1 (fr) 2020-12-17

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CN (1) CN110262689B (fr)
WO (1) WO2020248300A1 (fr)

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CN111142704B (zh) * 2019-12-13 2023-10-31 武汉华星光电技术有限公司 阵列基板及触控显示面板
CN111625118A (zh) * 2020-05-06 2020-09-04 武汉华星光电技术有限公司 显示面板及显示装置
CN114020170A (zh) * 2021-11-04 2022-02-08 福建华佳彩有限公司 一种触控显示屏的Layout结构

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CN110262689B (zh) 2021-01-01
CN110262689A (zh) 2019-09-20

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