WO2008080328A1 - Écran tactile du type à condensateur - Google Patents

Écran tactile du type à condensateur Download PDF

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Publication number
WO2008080328A1
WO2008080328A1 PCT/CN2007/071037 CN2007071037W WO2008080328A1 WO 2008080328 A1 WO2008080328 A1 WO 2008080328A1 CN 2007071037 W CN2007071037 W CN 2007071037W WO 2008080328 A1 WO2008080328 A1 WO 2008080328A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass substrate
tin oxide
indium tin
touch screen
circuit board
Prior art date
Application number
PCT/CN2007/071037
Other languages
English (en)
Chinese (zh)
Inventor
Ka Wah Steven Wong
Original Assignee
Matrix Crystal Company Limited
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 Matrix Crystal Company Limited filed Critical Matrix Crystal Company Limited
Publication of WO2008080328A1 publication Critical patent/WO2008080328A1/fr

Links

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
    • 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
    • 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
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer

Definitions

  • the present invention and a control device, and more particularly a touch screen.
  • buttons are required to be in contact with the electrodes to conduct the signal.
  • the contact surface will be oxidized, the sensitivity of the button will be reduced, the damage will be easy, and the life will not be long.
  • two glass substrates are required between the LCD module group and the polarizing plate to place the indium tin oxide circuit, which is costly.
  • the object of the present invention is to overcome the deficiencies in the prior art that the contact surface will be oxidized, the sensitivity of the button will be reduced, the life is not long, and the production cost is high, and the utility model has the advantages of small occupied area, long button life, low production cost and convenient use.
  • the buttons are arranged in the display screen with a non-contact capacitive touch screen with indium tin oxide lines on both sides of the glass substrate.
  • a capacitive touch screen comprising a front glass substrate and a rear glass substrate parallel to each other, a torsional liquid crystal is disposed between the two glass substrates, and a front front side of the front glass substrate is provided with a transparent front polarizing plate, A rear polarizing plate is disposed on a rear side of the glass substrate, and an indium tin oxide circuit for LCD is disposed on an inner side of the front glass substrate and the rear glass substrate, respectively, wherein: a side of the front glass substrate facing the polarizing plate is further disposed At least one transparent capacitor plate button and an indium tin oxide circuit, and a driving integrated circuit board is disposed at an outer end of the glass substrate, and is connected by a wire between the driving integrated circuit board and the capacitor plate button;
  • a capacitive touch screen as described above characterized in that the LCD is etched on a glass substrate sputtered with an indium tin oxide layer by an indium tin oxide line and a capacitor plate button 7 and an indium tin oxide line, respectively. Both sides;
  • a capacitive touch screen as described above characterized in that the wire is an indium tin oxide circuit, flexible
  • the circuit board has one end connected to the indium tin oxide line and the other end connected to the driving integrated circuit board.
  • a capacitive touch screen as described above characterized in that the indium tin oxide line for LCD is a vertical indium tin oxide line, and the indium tin oxide line for LCD is a lateral indium tin oxide line;
  • the invention has the capacitor plate button set in the display screen, has a simple structure, small occupied area and convenient use.
  • Indium tin oxide is provided on both sides of the glass substrate to reduce the volume and reduce the cost.
  • Figure 1 is an exploded view of the present invention
  • Figure 2 is a diagram of a plate button of the present invention and its circuit arrangement
  • Figure 3 is a longitudinal indium tin oxide circuit diagram of the present invention.
  • Figure 4 is a transverse indium tin oxide circuit diagram of the present invention.
  • Figure 5 is a schematic cross-sectional view of the present invention.
  • Figure 6 is a schematic view showing the generation of capacitance of the present invention.
  • Figure 7 is a diagram of a count comparison circuit of the present invention.
  • a capacitive touch panel comprising a front glass substrate 1 and a rear glass substrate 2 which are parallel to each other, a torsional liquid crystal is disposed between the two glass substrates, and a transparent front polarizing plate 3 is disposed on a front side of the front glass substrate 1.
  • a rear polarizing plate 4 is disposed on the rear side of the rear glass substrate 2
  • indium tin oxide wires 5 and 6 for LC D are disposed on the inner sides of the front glass substrate 1 and the rear glass substrate 2, respectively, and the front glass substrate 1 faces the polarizing plate.
  • At least one transparent capacitor plate button 7 is further disposed on one side of the third substrate, and a driving integrated circuit board 8 is disposed at one end of the glass substrate 1, and a counter module and a CPU are disposed on the driving integrated circuit board 5, and the integrated circuit board is driven 8 and the capacitor plate button 7 between Line 9 is connected.
  • the indium tin oxide line 5 for LCD is a vertical indium tin oxide line
  • the indium tin oxide line 6 for LCD is a lateral indium tin oxide line
  • pixel dots are formed by criss-interlarted indium tin oxide lines.
  • the capacitor plate button 7 is an indium tin oxide plate
  • the wire 9 is an indium tin oxide circuit 10 on the glass substrate 1, and the flexible wire plate 11 is connected.
  • the flexible circuit board 11 is connected to the indium tin oxide line 10, and the other end is connected to the driving integrated circuit.
  • the boards 8 are connected.
  • the indium tin oxide wiring 5 for the LCD, the capacitor plate button 7, and the indium tin oxide wiring 10 are respectively etched on both sides of the glass substrate 1 on which the indium tin oxide layer is sputtered.
  • the capacitor consists of two poles. There is only one pole of the capacitive plate on the touch screen. Without a finger approaching or touching the polarizer, the capacitor plate 4 and the air or other conductor form a capacitance C P . The capacitance C P is very small. Neglected; When a finger approaches or touches the polarizer 4 ⁇ , the human body is grounded, the finger acts as a pole of the capacitor, and the capacitance between the finger and the capacitor plate button 4 forms a capacitance C F , C F is much smaller than C P , and the capacitance to be measured increases.
  • one end of the flexible circuit board 8 is connected with a counter module, whether there is a finger press button can be compared with the current value by the count value of the no action ,, because the C F capacitance value is determined by the finger surface area and the finger
  • the voltage stored on the capacitor by the finger touch and the non-touch polarizer 2 is compared.
  • One end of the capacitor plate button 4 is connected to the signal counter terminal, and the same signal is used for reading.
  • the capacitor plate button is essentially a grounded variable capacitor.
  • the capacitance of the capacitor is increased, and the capacitance can be measured.
  • the value changes to determine whether the button is active.
  • the CPU can know whether there is a button action, thereby issuing an instruction to control the related action execution, and instructing the display IC to perform related display.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Position Input By Displaying (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

La présente invention concerne un écran tactile à condensateur comportant un substrat avant en verre et un substrat arrière en verre mutuellement parallèles, et un cristal liquide déformé par torsion est prévu dans les deux substrats en verre, et une plaque polarisante avant transparente est installée devant le substrat avant en verre, et une plaque polarisante arrière est installée à l'arrière du substrat arrière en verre, un circuit à base d'oxyde d'indium dopé à l'étain étant utilisé par l'écran à cristaux liquides installé sur les parties intérieures du substrat avant en verre et du substrat arrière en verre respectivement. Il est également prévu une frappe de plaque polaire capacitive et un circuit d'oxyde dopé à l'étain installés sur une face du substrat avant en verre en regard de la plaque polarisante, et il est prévu une carte de circuit imprimé intégrée de commande entre l'extérieur du substrat en verre, et une connexion de fils de sortie entre la carte de circuit imprimé intégrée de commande et la frappe de plaque polaire capacitive. L'invention concerne un écran tactile du type à condensateur sans contact dont la frappe est disposée dans l'écran d'affichage et dont le circuit d'oxyde d'indium dopé à l'étain est disposé sur les deux faces du substrat en verre.
PCT/CN2007/071037 2007-01-01 2007-11-08 Écran tactile du type à condensateur WO2008080328A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200720047146.7 2007-01-01
CNU2007200471467U CN201004130Y (zh) 2007-01-01 2007-01-01 一种电容式触摸屏

Publications (1)

Publication Number Publication Date
WO2008080328A1 true WO2008080328A1 (fr) 2008-07-10

Family

ID=39039672

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/071037 WO2008080328A1 (fr) 2007-01-01 2007-11-08 Écran tactile du type à condensateur

Country Status (2)

Country Link
CN (1) CN201004130Y (fr)
WO (1) WO2008080328A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100943989B1 (ko) * 2008-04-02 2010-02-26 (주)엠아이디티 정전용량식 터치스크린
KR101321996B1 (ko) 2008-04-25 2013-10-25 엘지디스플레이 주식회사 액정표시장치 및 그 구동방법
CN101881899B (zh) * 2009-05-08 2011-11-02 义强科技股份有限公司 液晶显示器
US8334849B2 (en) * 2009-08-25 2012-12-18 Pixart Imaging Inc. Firmware methods and devices for a mutual capacitance touch sensing device
CN102043184B (zh) * 2009-10-09 2013-10-09 Lg化学株式会社 集成触摸偏光板和具有该集成触摸偏光板的触摸面板
CN101776810A (zh) * 2010-03-10 2010-07-14 中山微视显示器有限公司 一种触摸控制装置
CN102566117A (zh) * 2012-02-16 2012-07-11 深圳市中显微电子有限公司 具有触摸功能的液晶显示模组
CN103529583A (zh) * 2013-10-30 2014-01-22 重庆捷尔士显示技术有限公司 一种内置触控电路的液晶显示器
CN107748635A (zh) * 2017-10-18 2018-03-02 广东趣点智能科技有限公司 一种触摸屏柔性线路抗氧化保护解决工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5117300A (en) * 1989-04-05 1992-05-26 Licentia Patent-Verwaltungs-Gmbh Electrical circuit device with different types of conductor paths
CN1090062A (zh) * 1992-12-24 1994-07-27 株式会社金星社 液晶显示器及其制造方法
CN2578858Y (zh) * 2002-11-19 2003-10-08 上海广电液晶显示器有限公司 超扭曲向列液晶显示屏
CN1471072A (zh) * 2002-07-23 2004-01-28 李友端 液晶显示器及其触控方法
CN1510483A (zh) * 2002-12-25 2004-07-07 胜华科技股份有限公司 改善液晶显示器视觉阴影的方法及装置
CN1595802A (zh) * 2003-09-10 2005-03-16 义隆电子股份有限公司 具有按键结构的电容式触摸屏及其检测方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5117300A (en) * 1989-04-05 1992-05-26 Licentia Patent-Verwaltungs-Gmbh Electrical circuit device with different types of conductor paths
CN1090062A (zh) * 1992-12-24 1994-07-27 株式会社金星社 液晶显示器及其制造方法
CN1471072A (zh) * 2002-07-23 2004-01-28 李友端 液晶显示器及其触控方法
CN2578858Y (zh) * 2002-11-19 2003-10-08 上海广电液晶显示器有限公司 超扭曲向列液晶显示屏
CN1510483A (zh) * 2002-12-25 2004-07-07 胜华科技股份有限公司 改善液晶显示器视觉阴影的方法及装置
CN1595802A (zh) * 2003-09-10 2005-03-16 义隆电子股份有限公司 具有按键结构的电容式触摸屏及其检测方法

Also Published As

Publication number Publication date
CN201004130Y (zh) 2008-01-09

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