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WO2016123811A1 - Écran tactile capacitif et combinaison de celui-ci avec une carte de circuit imprimé souple - Google Patents

Écran tactile capacitif et combinaison de celui-ci avec une carte de circuit imprimé souple Download PDF

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Publication number
WO2016123811A1
WO2016123811A1 PCT/CN2015/072454 CN2015072454W WO2016123811A1 WO 2016123811 A1 WO2016123811 A1 WO 2016123811A1 CN 2015072454 W CN2015072454 W CN 2015072454W WO 2016123811 A1 WO2016123811 A1 WO 2016123811A1
Authority
WO
WIPO (PCT)
Prior art keywords
pins
touch screen
capacitive touch
conductive layer
substrate
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/CN2015/072454
Other languages
English (en)
Chinese (zh)
Inventor
陈鑫
余晓军
魏鹏
邹翔
周瑜
刘自鸿
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.)
Shenzhen Royole Technologies Co Ltd
Original Assignee
Shenzhen Royole Technologies 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 Shenzhen Royole Technologies Co Ltd filed Critical Shenzhen Royole Technologies Co Ltd
Priority to PCT/CN2015/072454 priority Critical patent/WO2016123811A1/fr
Priority to CN201580000931.4A priority patent/CN105493015B/zh
Publication of WO2016123811A1 publication Critical patent/WO2016123811A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper

Definitions

  • the present invention relates to touch screens, and more particularly to capacitive touch screens and combinations thereof with flexible circuit boards.
  • Single-layer touch screens have become a trend more and more because of the current demand for reduced touch screens and reduced cost.
  • the single-layer touch screen refers to the simultaneous formation of conductive patterns for driving and sensing on the substrate, and the driving and sensing interactions are not required in the pattern area by bridging or jumping. Since the performance of the single-layer touch screen is similar to that of the conventional single-layer bridge or double-layer structure, it has been rapidly developed and is now capable of stable mass production.
  • Single-layer touch screens are used to connect flexible circuit boards (FPCs) with many pins.
  • FPCs flexible circuit boards
  • a single-ended output screen with a size of about 5 inches has more than two hundred pins.
  • one design can have a pitch value of 0.27 mm, a pin width of 0.12 mm, and a gap between pins of 0.15 mm.
  • the FPC is the same as this design, so that it is fully aligned during bonding. Even if there is some offset, because of the wide spacing and short circuit, this design will affect the contact resistance.
  • the FPC pin and the touch screen are hot pressed to make an anisotropic conductive film (ACF) attached to the lead.
  • ACF anisotropic conductive film
  • the small metal balls of a few um to ten um in diameter included in the ACF are easily connected to form a short circuit of the adjacent pins.
  • the touch screen and the FPC are slightly offset, and a short circuit is easily formed.
  • the size of the flexible substrate is severely deformed, resulting in a perfect match between the FPC pin and the on-screen pin size, increasing the risk of short circuit.
  • Embodiments of the present invention provide a capacitive touch screen that can solve the above technical problems and its combination with a flexible circuit board.
  • a capacitive touch screen is connectable to a flexible circuit board (FPC), the FPC comprising a plurality of first pins arranged side by side.
  • the capacitive touch screen includes a substrate and a lead region disposed on the substrate, the lead region includes a plurality of second pins disposed side by side, each second pin having a width greater than a width of each of the first leads, adjacent The pitch of the second pin is smaller than the pitch of the adjacent first pins.
  • the second pin is set side by side.
  • the width of each second pin is greater than the width of each first pin, the spacing of adjacent second pins is smaller than the spacing of adjacent first pins, and each second pin is electrically connected to a corresponding first pin. .
  • the width of each of the second pins is greater than the width of each of the first pins, and the pitch of the adjacent second pins is smaller than the spacing of the adjacent first pins, and therefore, the first pin
  • the small metal balls included in the ACF are also difficult to form a short circuit adjacent to the first pin.
  • the width of the second pin is larger than the width of each of the first pins, even if the touch screen and the FPC are slightly offset, the second pin is not easily short-circuited due to the shorting of the first pin. In this way, the bonding yield between the touch screen and the FPC is improved, and the production cost is also reduced.
  • FIG. 1 is a plan view showing a capacitive touch screen and an FPC in a separated state according to a preferred embodiment of the present invention.
  • FIG. 2 is a schematic side view showing the capacitive touch screen of FIG. 1 fabricated by laser.
  • FIG. 3 is a partially enlarged plan view of the capacitive touch screen of FIG. 1.
  • FIG. 4 is a schematic view of the capacitive touch screen of FIG. 1 and the respective pins of the FPC in a state in which they are not in contact with each other.
  • Figure 5 is a schematic view of the pins of Figure 4 in contact with each other.
  • FIG. 1 shows a plan view of the capacitive touch screen 10 and the FPC 30 in a separated state before being mutually bonded.
  • the FPC 30 has a first pin 32 and the capacitive touch screen 10 has a second lead for connecting with the first pin 32.
  • the detailed structure of the foot 26, the first and second pins 32, 26 is as follows. 2 and 3, which show a side view and a partially enlarged plan view of the capacitive touch screen 10, respectively.
  • the capacitive touch screen 10 includes a substrate 12 and a conductive layer 14 disposed on the substrate 12.
  • the substrate 12 can be made of a transparent material, such as glass or polyethylene terephthalate (PET), to facilitate the production of touch-enabled display screen modules or other applications requiring transparency.
  • PET polyethylene terephthalate
  • the optional PET is used to fabricate the substrate 12, which has the advantages of good light transmission and flexibility, and is easy to manufacture.
  • the substrate 12 made of PET has a thickness of about 0.015 to 0.2 millimeters (mm), preferably 0.1 mm, and the substrate within this thickness has good flexibility.
  • the substrate 12 can also be made of a non-transparent material, such as a metal, without the need for other transparent properties.
  • the conductive layer 14 may be a transparent conductive film including a metal of a nanometer dimension, such as a film comprising a single metal, an alloy, a metal compound or a combination thereof in any combination of nanometer dimensions, for example, a film including nanowires, including nano metal particles.
  • the film, the film including the nano metal mesh may of course be a graphene film, a carbon nanotube film, an organic conductive polymer film, an Indium Tin Oxide (ITO) film or any combination thereof.
  • the conductive layer 14 is a transparent conductive nano-silver film, which is a film comprising a polymer matrix having nano-silver filaments, and the nano-silver filaments are uniformly distributed in the film to make the film transparent. And conductive features.
  • the nanosilver film can be attached to the substrate 12 by coating, silk printing or spraying.
  • the capacitive touch screen 10 further includes a protective layer 16 on the side of the substrate 12 facing away from the conductive layer 14, and the protective layer 16 may be fixed to the substrate 12 by a scratch-resistant material such as a polycarbonate material or the like.
  • the conductive layer 14 is formed thereon by laser light 11 to form a sensing region 22 located therebetween and a lead region 24 at the edge.
  • adjusting the parameters of the laser light 11 allows the laser light 11 to change the transparent conductive properties of the nanosilver film into a transparent and non-conductive manner without removing it.
  • the laser parameters include pulse width, pulse flux, pulse energy, spot size, pulse repetition rate, etc. After rotating the appropriate parameters, the nano-silver in the irradiated portion will change from conductive to non-conductive, and at the same time, illuminated. The transparency of the portion hardly changes, and the exposed portion of the nanosilver film is hardly peeled off.
  • lead region 24 may also be formed from conductive layer 14 by a yellow light process or silk screen.
  • the sensing region 22 has a pattern 26 for sensing a touch, and a row line and a column line (not labeled) drawn from the pattern 26, wherein the row line and the column line are both disposed on one side of the sensing region 22.
  • the lead region 24 has a plurality of the second pins 26 formed by the laser 11 illumination lines, and the second pins 26 are connected to the corresponding row lines and column lines so that the row lines and the column lines pass through the lead regions 24.
  • Two pins 26 with The first pin 32 of the FPC is connected to an external circuit.
  • FIG. 4 and FIG. 5 are schematic diagrams of the capacitive touch screen and the respective pins 26 and 32 of the FPC when they are not in contact with each other and in contact with each other.
  • the width B2 of the second pin 26 of the capacitive touch screen is greater than the width B1 of the first pin 32 of the FPC, and the pitch A2 of the adjacent second pin 26 is smaller than the pitch A1 of the adjacent first pin 32.
  • the width of the second pin 26 is larger than the width of each of the first pins 32, even if the touch screen and the FPC are slightly offset, the second pins 26 are not easily short-circuited by the first pins 32. A short circuit has occurred. As such, the bonding yield between the touch screen 10 and the FPC 30 is improved, and the production cost is also reduced.
  • each of the first pins 32 is located between the corresponding one of the second pins 26 to reduce the risk of short circuit.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Position Input By Displaying (AREA)

Abstract

Un écran tactile capacitif (10), qui peut être connecté à une carte de circuit imprimé souple (FPC), la FPC (30) comprenant une pluralité de premières broches (32) qui sont disposées à des intervalles côte-à-côte. L'écran tactile capacitif (10) comprend un matériau de base (12) et une zone de conducteur (24) sur le matériau de base (12), la zone de conducteur (24) comprenant une pluralité de secondes broches (26) qui sont disposées à des intervalles réguliers côte-à-côte, la largeur de chaque seconde broche (26) étant supérieure à celle de chaque première broche (32), et un espace entre des deuxièmes broches (26) adjacentes étant plus petit qu'un espace entre des premières broches (32) adjacentes. Etant donné que l'espace entre les premières broches (32) adjacentes est relativement grand, lorsque de petites billes métalliques contenues dans l'ACF sur les premières broches (32) sont reliées, un court-circuit des premières broches (32) adjacentes est peu susceptible de se former. De plus, étant donné que la largeur des secondes broches (26) est supérieure à celle de chacune des premières broches (32), même lorsque l'écran tactile capacitif (10) dévie légèrement par rapport à la FPC (30), un court-circuit entre les broches est peu susceptible de se produire. L'invention concerne également une combinaison de l'écran tactile capacitif (10) et du FPC (30).
PCT/CN2015/072454 2015-02-06 2015-02-06 Écran tactile capacitif et combinaison de celui-ci avec une carte de circuit imprimé souple Ceased WO2016123811A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2015/072454 WO2016123811A1 (fr) 2015-02-06 2015-02-06 Écran tactile capacitif et combinaison de celui-ci avec une carte de circuit imprimé souple
CN201580000931.4A CN105493015B (zh) 2015-02-06 2015-02-06 电容触摸屏

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/072454 WO2016123811A1 (fr) 2015-02-06 2015-02-06 Écran tactile capacitif et combinaison de celui-ci avec une carte de circuit imprimé souple

Publications (1)

Publication Number Publication Date
WO2016123811A1 true WO2016123811A1 (fr) 2016-08-11

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WO (1) WO2016123811A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107315497A (zh) * 2017-05-31 2017-11-03 深圳欧菲光科技股份有限公司 触控面板及显示设备
CN109739037A (zh) * 2018-11-23 2019-05-10 重庆天胜科技有限公司 一种方便维修的液晶显示屏
US10774454B2 (en) 2017-12-01 2020-09-15 Haier Us Appliance Solutions, Inc. User interface with capacitive touch sensor
CN112072428A (zh) * 2020-07-13 2020-12-11 无锡市科虹标牌有限公司 一种触摸膜连接器用金属插针的压合工艺
CN112068736A (zh) * 2020-10-09 2020-12-11 烟台正海科技股份有限公司 一种触控面板引线及其制备工艺
CN113625154A (zh) * 2021-08-11 2021-11-09 翔实光电科技(昆山)有限公司 一种触摸屏假压测试装置及其使用方法

Families Citing this family (4)

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WO2017188236A1 (fr) * 2016-04-26 2017-11-02 株式会社フジクラ Corps de câblage, ensemble corps de câblage, substrat de câblage et capteur tactile
CN106775170B (zh) * 2017-01-18 2020-06-09 昆山国显光电有限公司 一种柔性电路板及自电容式触摸显示屏
CN107402682B (zh) * 2017-07-31 2021-08-10 张家港康得新光电材料有限公司 一种触摸屏与其制作方法
WO2019113824A1 (fr) * 2017-12-13 2019-06-20 深圳市柔宇科技有限公司 Dispositif d'affichage tactile flexible et procédé de compensation tactile

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107315497A (zh) * 2017-05-31 2017-11-03 深圳欧菲光科技股份有限公司 触控面板及显示设备
US10774454B2 (en) 2017-12-01 2020-09-15 Haier Us Appliance Solutions, Inc. User interface with capacitive touch sensor
CN109739037A (zh) * 2018-11-23 2019-05-10 重庆天胜科技有限公司 一种方便维修的液晶显示屏
CN109739037B (zh) * 2018-11-23 2023-12-15 深圳市新盈恒科技有限公司 一种方便维修的液晶显示屏
CN112072428A (zh) * 2020-07-13 2020-12-11 无锡市科虹标牌有限公司 一种触摸膜连接器用金属插针的压合工艺
CN112072428B (zh) * 2020-07-13 2022-02-18 无锡市科虹标牌有限公司 一种触摸膜连接器用金属插针的压合工艺
CN112068736A (zh) * 2020-10-09 2020-12-11 烟台正海科技股份有限公司 一种触控面板引线及其制备工艺
CN113625154A (zh) * 2021-08-11 2021-11-09 翔实光电科技(昆山)有限公司 一种触摸屏假压测试装置及其使用方法

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Publication number Publication date
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CN105493015A (zh) 2016-04-13

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