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WO2015196678A1 - Substrat tactile souple et dispositif d'affichage tactile - Google Patents

Substrat tactile souple et dispositif d'affichage tactile Download PDF

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Publication number
WO2015196678A1
WO2015196678A1 PCT/CN2014/089828 CN2014089828W WO2015196678A1 WO 2015196678 A1 WO2015196678 A1 WO 2015196678A1 CN 2014089828 W CN2014089828 W CN 2014089828W WO 2015196678 A1 WO2015196678 A1 WO 2015196678A1
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WO
WIPO (PCT)
Prior art keywords
substrate
touch
layer
flexible
sensing
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2014/089828
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English (en)
Chinese (zh)
Inventor
曾庆慧
藤野诚治
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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 BOE Technology Group Co Ltd filed Critical BOE Technology Group Co Ltd
Publication of WO2015196678A1 publication Critical patent/WO2015196678A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Definitions

  • Embodiments of the present invention relate to a flexible touch substrate and a touch display device.
  • the touch screen is generally divided into four types: resistive, capacitive, sonic and infrared.
  • the touch screen is generally classified into an add-on, an in-cell, an on-cell, and an One Glass Solution (OGS).
  • OGS One Glass Solution
  • the in-cell method has the advantages of being lighter and thinner because it can reduce one layer of substrate, and reduces the adverse effect on the display contrast due to the refraction, reflection, etc. of the light at the interface due to the reduction of the substrate, thereby achieving contrast. Higher display.
  • Embodiments of the present invention provide a flexible touch substrate and a touch display device, which are capable of obtaining a touch screen and a touch display device which are thin in thickness, improved in sensitivity, and easy to implement in-cell touch technology.
  • embodiments of the present invention provide a flexible touch substrate comprising: a flexible substrate; and a touch sensing unit comprising two sensing layers, wherein at least one sensing layer is located inside the flexible substrate.
  • the present invention also provides a touch display device comprising the above flexible touch substrate.
  • FIG. 1 is a cross-sectional structural view of a flexible touch substrate according to a first embodiment of the present invention
  • FIG. 2 is a cross-sectional view showing steps of a method for fabricating a flexible touch substrate according to Embodiment 1 of the present invention
  • FIG. 3 is a cross-sectional structural view of a flexible touch substrate according to a second embodiment of the present invention.
  • FIG. 4 is a cross-sectional structural view of a flexible touch substrate according to a third embodiment of the present invention.
  • FIG. 5 is a cross-sectional structural view of a touch display device according to a fourth embodiment of the present invention.
  • FIG. 6 is a cross-sectional structural view of a touch display device according to a fifth embodiment of the present invention.
  • FIG. 7 is a cross-sectional structural view of a touch display device according to Embodiment 6 of the present invention.
  • Figure 8 is a cross-sectional structural view of a touch display device in accordance with a seventh embodiment of the present invention.
  • Embodiments of the present invention provide a flexible touch substrate including a flexible substrate and a touch sensing unit, the touch sensing unit including two sensing layers, wherein at least one sensing layer is located on the flexible substrate internal.
  • the two sensing layers are a first sensing layer 22 and a second sensing layer 23, respectively, and the first sensing layer 22 and the second sensing layer 23 are both flexible.
  • the first sensing layer 22 and the second sensing layer 23 in this embodiment are located in different layers inside the flexible substrate 21.
  • a polyimide (PI) solution is first coated on a carrier 1 (for example, glass, quartz, plastic), and then dried to form a first PI layer 211 and a first one is prepared thereon.
  • the sensing layer 22, the first sensing layer 22 can be, for example, a first-direction metal conductive layer as a touch sensing layer, then coated with a PI liquid, dried to form a second PI layer 212, and continue to prepare a second thereon.
  • the sensing layer 23, the second sensing layer 23 can adopt, for example, a second direction metal conductive layer as a touch sensing layer, wherein the extending directions of the first direction metal conductive layer and the second direction metal conductive layer cross each other and continue to be coated.
  • the third PI layer 213 is formed to be baked, and then sintered so that the first PI layer 211, the second PI layer 212, and the third PI layer 213 are integrated, thereby forming the flexible substrate 21, thereby obtaining the touch sensing unit located in the lining.
  • the flexible substrate is peeled off from the carrier 1 to finally obtain a flexible touch substrate 2 in which the touch sensing unit is located inside the flexible substrate.
  • the flexible touch substrate can function as a flexible touch screen.
  • the flexible touch substrate provided by the embodiment provides the touch sensing unit to the inside of the flexible substrate, thereby achieving a high sensitivity touch effect, and realizing a flexible touch screen with reduced thickness, improved sensitivity, and easy implementation of in-cell touch technology. .
  • the difference between this embodiment and the first embodiment is that the first sensing layer 22 and the second sensing layer 23 in the embodiment are located in the same layer inside the flexible substrate 21.
  • a layer of PI liquid is coated on a carrier plate (for example, glass, quartz, plastic), and then dried to form a PI layer and a touch sensing first sensing layer and a second sensing layer are prepared thereon.
  • a sensing layer and a second sensing layer are located in the same layer, the first sensing layer is a first direction metal guiding layer, and the second sensing layer is a second direction metal guiding layer, wherein the first direction metal guiding layer and the first direction
  • the extending directions of the two-direction metal guiding layers are mutually intersected, and then the PI liquid is coated, dried to form another PI layer, and then sintered to make the two PI layers integrated, and the touch sensing unit is obtained inside the substrate. structure.
  • the flexible substrate is peeled off from the carrier, and finally a flexible touch substrate in which the touch sensing unit is located inside the flexible substrate is obtained.
  • the flexible touch substrate can be used as a flexible touch screen.
  • the flexible touch substrate provided by the embodiment provides the touch sensing unit to the inside of the flexible substrate, thereby achieving a highly sensitive touch effect, realizing a flexible touch screen with reduced thickness, improved sensitivity, and easy implementation of in-cell touch technology. .
  • the difference between this embodiment and the first embodiment is that one of the two sensing layers in the embodiment is located inside the flexible substrate, and the other sensing layer is located in the flexible layer. On the outer surface of the substrate.
  • the first sensing layer 22 is located inside the flexible substrate and the second sensing layer 23 is located on the upper surface of the flexible substrate.
  • a layer of PI solution on a carrier (eg glass, quartz, plastic) and then dry it.
  • a carrier eg glass, quartz, plastic
  • the embodiment provides a touch display device comprising the flexible touch substrate as described in any of the above embodiments.
  • the display device includes: the flexible touch substrate 2, the flexible touch substrate 2 includes a flexible substrate 21 and two sensing layers, and the two sensing layers are respectively first The sensing layer 22 and the second sensing layer 23, the first sensing layer and the second sensing layer are both located inside the flexible substrate 21, and the flexible touch substrate further includes a TFT device 3 and an organic light emitting (EL) Device 4 and protective film 5.
  • 2 is a flexible touch substrate
  • 21 is a flexible substrate
  • 22 is a first sensing layer
  • 23 is a second sensing layer
  • 3 is a TFT device
  • 4 is an EL device.
  • the first sensing layer and the second sensing layer in this embodiment may be fabricated, for example, by using a transparent conductive material such as indium tin oxide (ITO).
  • ITO indium tin oxide
  • the TFT device may be an oxide TFT, an organic TFT, or a low temperature polysilicon (LTPS). Thin film transistor, etc.
  • first sensing layer and the second sensing layer in this embodiment may be made of a transparent conductive material, for example, or may be made of other metal layers.
  • an isolation layer may be disposed between the first sensing layer and the second sensing layer, and the isolation layer may be made of SiNx.
  • the above display device is manufactured as follows:
  • a layer of PI liquid is coated on a carrier (such as glass, quartz, plastic), and then dried to form a first PI layer and a first metal layer in the touch sensing unit is prepared thereon, and then an isolation layer is prepared.
  • a flexible substrate is formed and the touch sensing unit is located inside the flexible substrate.
  • the TFT substrate and the OLED device are further fabricated on the flexible substrate.
  • the flexible substrate is peeled off from the carrier to obtain an in-cell touch OLED display with the touch sensing unit inside the flexible substrate.
  • the embodiment of the present invention solves the in-cell touch by disposing the touch sensing unit inside the flexible substrate and then preparing the TFT device and the OLED device on the flexible substrate, thereby obtaining an OLED display device with high sensitivity and high sensitivity. Display technology is difficult to achieve technical problems with low yield.
  • an embodiment of the present invention provides a touch display device.
  • the display device includes the flexible touch substrate according to any of the above embodiments, a color filter layer is disposed on the flexible touch substrate to form a touch color film substrate, the device further includes an array substrate, the touch color film substrate and the array substrate There is a liquid crystal between them.
  • 2 is a touch color film substrate
  • 21 is a flexible substrate
  • 22 is a first sensing layer
  • 23 is a second sensing layer
  • 24 is a color filter layer
  • 3 is a liquid crystal layer
  • 4 is a thin film transistor formed therein
  • the array substrate, 5 is the backlight.
  • a color filter layer is formed on a flexible touch substrate to form a new touch color film substrate, which can reduce the thickness of 1-1.4 micrometers compared with the prior art, and thus, a thinner and lighter device can be obtained.
  • the touch sensing unit is far away from the thin film transistor and does not interfere with each other, the signal to noise ratio of the present embodiment is higher.
  • the yield of the present embodiment is higher than that of the conventional in-cell touch technology.
  • a layer of PI liquid is coated on a carrier (eg, glass, quartz, plastic), and then dried to form a first PI layer and a first sensor layer of the touch sensing unit is prepared thereon, and then the PI liquid is coated. And drying to form a second PI layer, continuing to form a second sensor layer in the touch sensing unit on the second PI layer, and then continuing to apply PI liquid, drying to form a third PI layer, and then forming Sintering causes the first PI layer, the second PI layer, and the third PI layer to be integrated to form a flexible substrate.
  • a carrier eg, glass, quartz, plastic
  • a color filter is formed on the flexible substrate to obtain a touch color film substrate, and the touch color film substrate is to be
  • the substrate formed with the TFT is bonded to the liquid crystal, and finally the flexible substrate is peeled off from the carrier to obtain an in-cell touch LCD display in which the touch sensing unit is inside the flexible substrate.
  • an embodiment of the present invention provides a touch display device, including the flexible touch substrate according to any of the above embodiments, having an In-cell OLED top emission structure.
  • the display device comprises a flexible touch substrate 2 comprising a flexible substrate 21 and a touch sensing unit, the first sensing layer 22 and the second sensing layer 23 of the touch sensing unit being located in a flexible Inside the substrate 21, a water-blocking oxygen film 24 is prepared on the lower surface of the flexible substrate, and the flexible touch substrate 2 and the water-blocking oxygen film 24 together form a water-blocking oxygen-proof plate having a touch function as an upper package substrate of the OLED device.
  • an in-cell type OLED display device is constructed.
  • 11 is TFT
  • 12 is EL
  • 13 package film (TFE)
  • 2 is flexible touch substrate
  • 21 is flexible substrate
  • 22 is first sensing layer
  • 23 is second sensing layer
  • 24 is water blocking Oxygen film.
  • the touch display device in this embodiment is manufactured by first coating a layer of PI liquid on a carrier (eg, glass, quartz, plastic), then drying to form a first PI layer and preparing a touch sensing unit thereon.
  • the first sensor layer is then coated with PI liquid and dried to form a second PI layer, and the second sensor layer in the touch sensing unit is further formed on the second PI layer, and then the PI liquid is continuously coated. Drying is performed to form a third PI layer, which is then sintered so that the first PI layer, the second PI layer, and the third PI layer are integrated to form a flexible substrate, and then a water-blocking oxygen film is formed on the flexible substrate.
  • the substrate having a touch function and a water-blocking oxygen function serves as an upper package substrate of the OLED display device, thereby obtaining an in-cell touch OLED display.
  • the PI liquid can also be replaced by a polyethylene naphthalate (PEN) solution.
  • the first sensing layer and the second sensing layer may be a conductive layer or a light sensitive layer.
  • the touch display device provided by the embodiment provides the touch sensing unit to the inside of the water blocking oxygen plate of the display device, thereby obtaining a touch OLED display device with high sensitivity, lightness and good display effect, and solving the in-cell touch display technology.
  • the technical problems of high difficulty and low yield are very beneficial to the preparation of flexible display devices.
  • an embodiment of the present invention provides a touch display device, such as the flexible touch substrate described in any of the embodiments.
  • the display device includes: a flexible touch substrate 2 including a flexible substrate 21 And a touch sensing unit, the first sensing layer 22 and the second sensing layer 23 in the touch sensing unit are located inside the flexible substrate 21.
  • the surface of the flexible touch substrate is provided with a color filter layer and a water blocking oxygen film, and a flexible touch substrate having a touch, water blocking oxygen and filtering function is used as an upper package substrate of the OLED device, thereby forming an in-cell type WOLED-CF. (White OLED and color filter) display device.
  • the touch display device in this embodiment is manufactured by coating a layer of PI liquid on a carrier (eg, glass, quartz, plastic), and then drying to form a first PI layer and preparing a touch sensing unit thereon.
  • the first sensor layer is then coated with the PI liquid and dried to form a second PI layer, and the second sensor layer in the touch sensing unit is further formed on the second PI layer, and then the PI liquid is continuously applied.
  • the touch sensing unit is formed into the interior of the water blocking oxygen plate, and the color of the color filter is disposed on the same side of the water blocking oxygen film, so that the same substrate has three functions of touch, water blocking oxygen and color filter.
  • the obtained display device has the characteristics of high sensitivity, lightness and thinness, good display effect, etc., and solves the technical problem that the in-cell touch display technology is difficult and has low yield, and is also beneficial for the preparation of the flexible display device.
  • Embodiments of the present invention provide a flexible touch substrate and a touch display device, and the touch sensing unit is fabricated into the flexible substrate to achieve a highly sensitive touch effect, and the touch screen has a thick thickness, low sensitivity, and in- Cell touch technology achieves difficult technical problems.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un substrat tactile souple et un dispositif d'affichage tactile. Le substrat tactile souple (2) comprend une sous-couche souple (21) ; et une unité de détection de toucher comprenant deux couches de détection (22, 23), au moins une couche de détection étant située à l'intérieur de la sous-couche souple (21). Selon le substrat tactile souple et le dispositif d'affichage tactile dans les modes de réalisation de la présente invention, l'unité de détection de toucher est fabriquée à l'intérieur de la sous-couche souple, de telle sorte qu'un effet de toucher de sensibilité élevée peut être réalisé, permettant ainsi d'obtenir un écran tactile ayant une épaisseur relativement mince et une sensibilité élevée, et de réaliser facilement la technologie de toucher dans une cellule.
PCT/CN2014/089828 2014-06-27 2014-10-29 Substrat tactile souple et dispositif d'affichage tactile Ceased WO2015196678A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410301611.X 2014-06-27
CN201410301611.XA CN104166475A (zh) 2014-06-27 2014-06-27 一种柔性触摸基板及触摸显示器件

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WO2015196678A1 true WO2015196678A1 (fr) 2015-12-30

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Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
CN104636021A (zh) * 2015-02-02 2015-05-20 京东方科技集团股份有限公司 曲面显示面板及显示装置
CN104679335A (zh) * 2015-03-07 2015-06-03 安徽方兴科技股份有限公司 一种On-cell触摸屏的制作方法
CN108287622B (zh) * 2017-01-10 2021-07-16 昆山国显光电有限公司 触控显示装置及其制造方法
CN107092399B (zh) 2017-05-12 2019-09-13 京东方科技集团股份有限公司 一种oled阵列基板及其制作方法、触控显示装置
CN107688411B (zh) * 2017-09-14 2019-11-22 京东方科技集团股份有限公司 基板及其感测方法、触控面板和显示装置
CN108664168A (zh) * 2018-05-14 2018-10-16 深圳市华星光电半导体显示技术有限公司 一种柔性基板及其制备方法、触控显示面板
CN112256160A (zh) * 2020-11-17 2021-01-22 深圳市纳木智联科技有限公司 一种基于电容触摸输入设备的传感输入装置及方法

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CN102402330A (zh) * 2010-09-08 2012-04-04 乐金显示有限公司 具有触摸传感器的显示设备及其驱动方法
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CN103384447A (zh) * 2013-06-26 2013-11-06 友达光电股份有限公司 软性电子装置

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