WO2003003187A1 - Structure de cables dans le substrat d'un ecran tactile - Google Patents

Structure de cables dans le substrat d'un ecran tactile Download PDF

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Publication number
WO2003003187A1
WO2003003187A1 PCT/KR2002/001233 KR0201233W WO03003187A1 WO 2003003187 A1 WO2003003187 A1 WO 2003003187A1 KR 0201233 W KR0201233 W KR 0201233W WO 03003187 A1 WO03003187 A1 WO 03003187A1
Authority
WO
WIPO (PCT)
Prior art keywords
wire
touch panel
transparent conductive
conductive film
signal
Prior art date
Application number
PCT/KR2002/001233
Other languages
English (en)
Inventor
Do-Il Kwak
Young-Soo Ahn
Original Assignee
A. Touch 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 A. Touch Co., Ltd. filed Critical A. Touch Co., Ltd.
Publication of WO2003003187A1 publication Critical patent/WO2003003187A1/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
    • G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
    • 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
    • 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
    • G06F2203/04113—Peripheral electrode pattern in resistive digitisers, i.e. electrodes at the periphery of the resistive sheet are shaped in patterns enhancing linearity of induced field

Definitions

  • the present invention relates generally to a five-wire resistive touch panel, and in particular, to a wiring structure for plates in a touch panel, in which signal sensing wires and signal applying wires are designed differently in order to provide a wide active region and realize a compact touch panel.
  • PCs Personal Computers
  • portable transmitting devices and other personal information processing devices process text and graphic data using a variety of input devices such as keyboards, mouse, and digitizers.
  • a major example of those input devices is a touch panel characterized by simplicity, a low probability of malfunction, portability, easy input, and capability of text input without the aid of an additional input device.
  • the detection mechanism, structure and operation of the touch panel are well known.
  • a resistive touch panel has two resistance component sheets facing each other with spacers interposed. The two sheets are brought into contact by pressure applied onto the upper sheet.
  • touch panels use ultrasonic, optical (infrared), static capacitance, electromagnetic induction and other types of films. They differ in signal amplification, resolution, and difficulty in designing and processing technology. Therefore, they are selectively used considering their durability and cost-effectiveness as well as their optical, electrical, and mechanical characteristics, immunity to environmental changes, and input characteristics.
  • Resistive touch panels are becoming widespread as an input device in connection with LCDs (Liquid Crystal Displays) for electronic diaries/organizers, PDAs (Personal Digital Assistants), and laptops.
  • the resistive touch panels are designed to be thin, small and lightweight, and operate with low power.
  • the resistive type includes analog touch panels and matrix touch panels. They are comprised of a 0.1 to 0.2mm thick film, a 0.2 to 2mm thick glass sheet, and a 1 to 2mm thick plastic sheet as upper and lower electrodes. According to wiring, the analog touch panels are divided into four-wire, five-wire, and eight-wire touch panels.
  • FIG. 1 is a sectional view of a typical resistive touch panel 10.
  • an upper plate 20 as a mobile electrode plate and a lower plate 30 as a fixed electrode plate are matched using a 75 to 200 ⁇ m thick adhesive 40 in such a way that transparent conductive films 22 of the upper and lower plates 20 and 30 face each other.
  • the upper plate 20 is brought into contact with the lower plate 30 by finger-touch or pen-touch.
  • a flexible PET (Polyester) film or a thin glass plate 21 is used as the upper plate 20.
  • Use of a thin glass plate with a polarization plate attached thereto reduces surface reflection caused by the optical isotropy of glass.
  • Optically isotropic plastic films are also on the market now but they are yet to be improved in terms of cost, processing, and physical characteristics.
  • FIGs. 2A, 2B and 2C illustrate the operation of the touch panel shown in FIG. 1.
  • dot spacers 50 are inserted between the upper and lower plates 20 and 30 to space them from each other by a distance of 100 to 300 ⁇ m.
  • an input signal is extracted by a connector tail.
  • the upper plate 20 comes into contact with the lower plate 30. and with application of a voltage Vx between electrodes 70 in the lower plate 30, potential gradients are generated on the resistance surface between the electrodes 70.
  • Electrodes 80 in the upper plate 20 read the voltage and then a controller calculates the X-axis position of the touched point A.
  • a voltage Vy is applied between the electrodes 80 in the upper plate 20 and the electrodes 70 of the lower plate 30 read the voltage. Then, the Y-axis position of the touched point A is obtained and the point A is displayed on the screen. By repeating this procedure at high speed, input positions can be displayed successively so that characters or lines can be written or drawn.
  • Characteristic requirements are characteristics demanded by users as touch panels are used in a wide variety of equipment. All characteristic requirements cannot be met, especially by use of resistive touch panels alone. Therefore, an optimum touch panel should be' chosen according to structure and detection mechanism.
  • resistive touch panels are suited for daily use due to character input, low-cost and high throughput.
  • Touch panels utilizing acoustic waves are intended for industrial use, considering their durability and optical, insulation characteristics.
  • LCDs are widely used as a display and divided into a monochrome type and a color type, a transmissive type and a reflective type, or an STN type and a TFT type according to classification criteria. Increased use of TFT LCDs and improved color yield of reflective LCDs have increased a demand for touch panels to be mounted on the LCDs.
  • a non-active region is defined as the length from the outermost line of a visible area to the periphery of a touch panel.
  • resistive touch panels are suitable for daily use, they have room for development to come up to performance expectations and meet other characteristic requirements when used together with LCDs.
  • the wiring of electrodes in resistive analog touch panels has been developed to four wires, five wires, and eight wires to meet various characteristic requirements.
  • Four- wire touch panel is simple to manufacture but is vulnerable to damage. Despite relative manufacture difficulty, five-wire touch panel can be operated reliably regardless of film uniformity or damage.
  • Eight-wire touch panel is also difficult to manufacture as compared to the four-wire and five-wire ones but is highly resistant to temperature or humidity. That is, the touch panel has there own advantages and shortcomings.
  • FIGs. 3, 4 and 5 illustrate a conventional resistive touch panel.
  • a five-wire resistive type touch panel (referred to as touch panel) 100 includes an upper plate 105 and a lower plate 101.
  • the lower plate 101 has a lower transparent conductive film 108 and four position signal applying wires 102 connected to external system connectors.
  • X-axis potential compensation electrodes 103 and Y-axis potential compensation electrodes 104 are formed on the lower transparent conductive film 108.
  • the upper plate 105 has an upper transparent conductive film 108 and a single position signal sensing wire 106 connected to an external system connector, for sensing position signals from the lower plate 101.
  • the five-wire resistive touch panel has the X- and Y-axis potential compensation electrodes 103 and 104 along the four sides of the lower plate 101 and the single position signal sensing wire 106 in the upper plate 105 as shown in FIGs. 4 and 5.
  • the transparent conductive film 108 is mounted on a lower substrate 109 and the potential compensation electrodes 103 and 104 are formed along the four sides of the transparent conductive film 108.
  • an area defined by ⁇ L A and ⁇ L B is removed from the lower transparent conductive film 108 or an insulation film is formed in that area of the lower transparent conductive film 108.
  • the potential compensation electrodes 103 and 104 are separately formed on the lower transparent conductive film 108. Therefore, the resistance component between the potential compensation electrodes 103 and 104 depends dominantly on a ratio of the gap between the potential compensation electrodes to the length of an adjacent electrode. This is a design that allows control of the resistance between the potential compensation electrodes 103 and 104.
  • the resistance is set to an appropriate value because too a low resistance value decreases the whole panel resistance, thereby adversely influencing the structure and power consumption of a driving circuit.
  • the potential compensation electrodes 103 for applying a signal to sense an X-axis coordinate are designed by setting the resistance between the potential compensation electrodes 104 along the Y-axis so that potential is equally distributed in a perpendicular direction to the X-axis when a voltage VH is applied to terminals A and D and a voltage VL is applied to terminals B and C
  • the potential compensation electrodes 104 for applying a signal to sense a Y-axis coordinate are designed by setting the resistance between the potential compensation electrodes 103 on the X-axis so that potential is equally distributed in a perpendicular direction to the Y-axis when the voltage VH is applied to the terminals A and D and the voltage VL is applied to the terminals B and C (or the terminals B and C are grounded), as shown in FIG. 5.
  • the upper plate 105 includes the single position signal sensing wire 106.
  • the position signal sensing wire 106 only senses position signals distributed on the lower plate 101. Therefore, there is no need for forming the position signal sensing wire 106 of a low-resistive metal for sensing a potential signal.
  • a flexible substrate is usually used for the upper plate 105, and the upper transparent conductive film 108 can be used regardless of sheet resistance, but preferably with 1000 ⁇ /D (sheet resistance).
  • the above-described upper and lower plates 105 and 101 are combined to fo ⁇ n the touch panel as shown in FIG. 2.
  • the upper and lower plates 105 and 101 are combined with their transparent conductive films 108 facing each other in the same manner as the four- wire resistive touch panel of FIG. 2.
  • Dot spacers 110 are inserted between the upper and lower transparent conductive films 108 in an active region to isolate them from each other. In the remaining area, use of an adhesive or combination of insulation components isolate the upper and lower plates 105 and 101 from each other.
  • the thus-constituted five-wire resistive touch panel senses contact and obtains the X and Y coordinates of a touched position in three steps.
  • Step 1 contact is sensed.
  • the touch panel 100 Upon finger-touch or pen-touch, the touch panel 100 senses the touch by applying a voltage between the upper and lower plates 105 and 101 and sensing the presence or absence of current.
  • Step 2 an X-axis coordinate is sensed.
  • Equi-potential fields are distributed in parallel to the Y-axis on the lower transparent conductive film 108 according to the sensed touch, and the potential of a finger-touched or pen-touched point P is transferred to the position signal sensing wire 106 via the transparent conductive film 108 between a position P' and the position signal sensing wire 106 (see FIGs. 3 and 5).
  • Step 3 a Y-axis coordinate is sensed. Equi-potential fields are distributed in parallel to the X-axis on the lower transparent conductive film 108, and the potential of the finger-touched or pen- touched point P is transferred to the upper plate 105 by contact resistors (see FIGs. 3 and 4).
  • the touch sensing step is repeatedly performed at predetermined intervals.
  • the typical five-wire resistive touch panel senses pressure applied to the upper plate 105, extracts the X and Y coordinates of the touched position, and displays them in the above-described steps. Therefore, even if the upper plate 105 is partially damaged, which is encountered with the four- wire touch panel, the five-wire resistive touch panel operates normally by damage compensation. This is a characteristic requirement that the five-wire resistive touch panel satisfies unlike four- or eight- wire resistive touch panels.
  • the five-wire resistive touch panel is not suitable in structure enough to satisfy the requirements of small size, light weight, and slimness. Moreover, it has the problem of an increased non-active region, i.e., a decreased active region caused by inappropriate signal sensing and applying wires.
  • FIG. 6 illustrates the design of the conventional lower plate 101. It includes the transparent conductive film 108 with the potential compensation electrodes 103 and 104 arranged along the Y and X axes, respectively.
  • the four position signal applying wires 102 are formed along the electrodes 103 and 104 in the ⁇ L A x ⁇ L B area.
  • the electrodes 103 and 104 are arranged in a smaller area due to the width ⁇ L C of the electrodes 103 and 104 and the wiring area ⁇ L A by ⁇ L B .
  • the increased non-active region is an obstacle to maximum utilization of the active region. This implies that a small, lightweight touch panel cannot be designed.
  • an object of the present invention to provide an improved five-wire resistive touch panel which overcomes problems resulting from an increase in a non-active region caused by signal line arrangement on the substrates of the touch panel.
  • a five-wire resistive touch panel In the five-wire resistive touch panel, a lower plate has a lower transparent conductive film and four X-axis and Y-axis potential compensation electrodes with predetermined resistance values arranged on the lower transparent conductive film along X and Y axes.
  • An upper plate has an upper transparent conductive film corresponding to the lower transparent conductive film and a signal applying wire and a signal sensing wire arranged along the X and Y axes, for sensing a position signal from the potential compensation electrodes.
  • Dot spacers are interposed between the upper and lower conductive films in an active region, for isolating the upper and lower conductive films from each other.
  • a contact terminal is disposed along the signal applying wire and the signal sensing wire, for making contact between the signal applying wire and the electrode compensation electrodes.
  • FIG. 1 is a sectional view of a typical touch panel
  • FIG. 2A illustrates an input position on an upper plate of a conventional four- wire resistive touch panel
  • FIG. 2B illustrates a layout of electrodes on the conventional four- wire resistive touch panel
  • FIG. 2C is a diagram illustrating a contact resistance circuit for the conventional four-wire resistive touch panel
  • FIG. 3 illustrates the vertical structure of a conventional five-wire resistive touch panel
  • FIG. 4 illustrates an example of the lower plate shown in FIG. 3
  • FIG. 5 illustrates another example of the lower plate shown in FIG. 3
  • FIG. 6 illustrates a pressure sensing structure in the conventional five- wire resistive touch panel
  • FIG. 7 illustrates the vertical structure of a five- wire resistive touch panel according to the present invention
  • FIG. 8 is a plan view of an embodiment of an upper plate in the five- wire resistive touch panel according to the present invention.
  • FIG. 9 is a plan view of another embodiment of the upper plate in the five-wire resistive touch panel according to the present invention.
  • FIG. 10 is a sectional view of the five- wire resistive touch panel illustrated in FIG. 7, taken along line A-A'; and
  • FIG. 11 is a plan view of a lower plate in five- wire resistive touch panel according to the present invention.
  • a wiring structure according to the present invention can be applied with restrictions to a four- wire or eight-wire resistive touch panel as well as a five- ire one.
  • the present invention provides a five-wired resistive touch panel with signal sensing wires and signal applying wires arranged together, to thereby satisfy particular characteristic requirements beyond its general functions.
  • a five- wire resistive touch panel 200 includes an upper plate 201 and a lower plate 202.
  • the upper plate 201 is comprised of an upper transparent conductive film 204, signal applying wires 203 (terminals a and d) and a signal sensing wire 206 (terminal e) or signal sensing wires 206 (terminals e and f), which are arranged along the upper transparent conductive film 204, and contact terminals 205 (terminals b and c) between the signal applying wires 203 and the signal sensing wires 206.
  • a lower transparent conductive film 204 of the lower plate 202 are formed potential compensation electrodes 207 and 208 with appropriate resistances along X and Y axes.
  • Dot spacers 209 are interposed between the upper and lower plates 201 and 202 in an active region in order to isolate the upper and lower transparent conductive films 24 from each other.
  • the upper and lower plates 201 and 202 are attached in such a way that the transparent conductive films 204 face each other and the contact terminals 205 contact the potential electrodes 208.
  • the five-wire resistive touch panel 200 aiming at achieving predetermined characteristic requirements with general characteristics also maintained, is so designed that all wires are concentrated on the upper plate 201 to sense signals and pressure through the upper plate 201 and thus displaying data based on the sensed pressure.
  • the contact terminals 205 for contacting the lower plate 202 are formed on the upper plate 201 in addition to the signal applying wires 203 and the signal sensing wire 206.
  • the signal applying wires 203 are arranged around the contour of the upper transparent conductive film 204, and the contact terminals 205 are disposed between the signal applying wires 203 and the signal sensing wire 206.
  • the signal sensing wire 206 is positioned at the center of the wires and the terminals to contact the upper conductive film 204, as illustrated in FIG. 8.
  • the signal sensing wires 206 are also extended in both directions inside the contact terminals 205, with one in contact with one side of the upper transparent conductive film 204 and the other extending along the other side of the upper transparent conductive film 204 to contact a corner thereof, as illustrated in FIG. 9.
  • the dot spacers 209 are interposed between the upper and lower transparent conductive films 204 and the contact terminals 205 make contact between the potential compensation electrodes 207 and 208 and the signal applying wires 203.
  • the signal sensing wires 206, the contact terminals 205, and the signal sensing wires 203 are symmetrically arranged concentratedly in one area on the upper plate 201.
  • the upper and lower plates 201 and 202 are combined with the dot spacers 209 interposed in a general five-wire resistive touch panel fabrication process.
  • the electrode arrangement and wiring is not a difficult process but a simple addition to the process for the upper plate 201.
  • the a2xa3 non-active region is defined by the width ⁇ L c of the electrodes 207 and 208, saving the non-active region defined by ⁇ L A and ⁇ L B from the afore-described conventional touch panel, as illustrated in FIG. 11.
  • the five-wire resistive touch panel 200 is configured to have one signal sensing wire and four signal applying wires as illustrated in FIG. 8, it operates with the same characteristics as a typical five-wire resistive touch panel.
  • the five-wire resistive touch panel 200 is configured to have two signal sensing wires and four signal applying wires as illustrated in FIG. 9, it can provide a variety of visual representations without deterioration of the original characteristics.
  • step 1 upon finger touch or pen touch, it is sensed and contact resistance is measured. Current is applied to the terminals e and b and voltages are read from the terminals f and d. Then, the contact resistance between the upper and lower pates is calculated from the voltages. If the contact resistance is dropped to or below a threshold, pen touch or finger touch on the screen is sensed. Here, pressure is determined by comparing the resistance with the threshold.
  • Step 2 After sensing the finger touch or pen touch, equi-potential fields are distributed in parallel to the Y axis on the lower transparent conductive film
  • the touch sensing step is repeatedly performed at predetermined intervals.
  • Step 3 Equi-potential fields are distributed in parallel to the X-axis on the lower transparent conductive film 204, and the potential of the touched point is transferred to the upper plate 201 by the contact resistors. Thus, the Y-axis coordinate of the touched point is achieved.
  • the thus-operated touch panel illustrated in FIG. 9 has different characteristics from those of the typical five- wire resistive touch panel which senses pen touch or finger touch by applying a voltage between the upper and lower plates and determining the presence or absence of current and then directly performing steps 2 and 3.
  • the upper and lower plates 201 and 202 with the dot spacers 209 interposed are combined using an adhesive such that the signal sensing wires 206 contact the corners of potential compensation electrodes 207 and 208 in the conventional manner, as illustrated in FIG. 10.
  • a thin silver film is inserted between the upper and lower plates 201 and 202 in the area for the contact terminals 205.
  • the five-wire resistive touch panel has a lower plate with only potential compensation electrodes arranged thereon. That is, different designing of the signal sensing wires and the signal applying wires on the plates of the touch panel ensures a wide active region and make it possible to realize a compact touch panel. Furthermore, an effective screen area is increased without increasing the overall size of the touch panel. Consequently, a thin, lightweight touch panel with a wide screen can be achieved.

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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

L'invention porte sur un écran tactile résistif à cinq câbles. Une plaque inférieure comporte un film conducteur transparent inférieur et quatre électrodes de compensation potentielles le long des axes X et Y dont les valeurs de résistance prédéfinies sont indiquées sur le film conducteur transparent inférieur le long des axes X et Y. Une plaque supérieure comporte un film conducteur transparent supérieur correspondant au film conducteur transparent inférieur, et un câble d'émission de signal ainsi qu'un câble de détection de signal sont disposés le long des axes X et Y de façon à détecter un signal de position provenant des électrodes de compensation potentielles. Des espaceurs de points sont placés entre les films conducteurs transparents supérieur et inférieur dans une région active de façon à les isoler ces films l'un de l'autre. Un terminal de contact est disposé le long du câble d'émission de signal et du câble de détection de signal de façon à faire contact entre le câble d'émission de signal et les électrodes de compensation.
PCT/KR2002/001233 2001-06-28 2002-06-27 Structure de cables dans le substrat d'un ecran tactile WO2003003187A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2001/37375 2001-06-28
KR10-2001-0037375A KR100368688B1 (ko) 2001-06-28 2001-06-28 터치 패널의 기판 배선 구조

Publications (1)

Publication Number Publication Date
WO2003003187A1 true WO2003003187A1 (fr) 2003-01-09

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PCT/KR2002/001233 WO2003003187A1 (fr) 2001-06-28 2002-06-27 Structure de cables dans le substrat d'un ecran tactile

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KR (1) KR100368688B1 (fr)
WO (1) WO2003003187A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101634923B (zh) * 2008-07-25 2011-12-28 株式会社日立显示器 显示装置
CN102722300A (zh) * 2012-04-02 2012-10-10 友达光电股份有限公司 触控面板及触控显示面板

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030039654A (ko) * 2001-11-14 2003-05-22 주식회사 에이터치 터치 패널 전극 구조
KR101494259B1 (ko) * 2013-03-20 2015-02-17 가천대학교 산학협력단 복합터치 부가형 패널과 이를 이용한 터치 인식 방법
TW201508574A (zh) 2013-08-22 2015-03-01 Henghao Technology Co Ltd 觸控電極裝置

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JPH05265633A (ja) * 1992-03-18 1993-10-15 Gunze Ltd タッチパネル
JPH0822357A (ja) * 1994-07-06 1996-01-23 Fujitsu Ltd タッチパネル
WO2000002119A1 (fr) * 1998-07-06 2000-01-13 Nissha Printing Co., Ltd. Film conducteur transparent pour ecran tactile transparent, ecran tactile transparent utilisant un film conducteur transparent, et procede de fabrication d'un film conducteur transparent
KR20010003504A (ko) * 1999-06-23 2001-01-15 김순택 터치 패널의 제조 방법
KR20010003587A (ko) * 1999-06-24 2001-01-15 김순택 터치패널
KR20010003503A (ko) * 1999-06-23 2001-01-15 김순택 터치 패널
KR20010038397A (ko) * 1999-10-25 2001-05-15 김순택 터치 패널의 제조 방법
KR20010051590A (ko) * 1999-11-10 2001-06-25 나가오카 마사시 저온환경하에서도 조작성이 개선된 터치패널

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Publication number Priority date Publication date Assignee Title
JPH05265633A (ja) * 1992-03-18 1993-10-15 Gunze Ltd タッチパネル
JPH0822357A (ja) * 1994-07-06 1996-01-23 Fujitsu Ltd タッチパネル
WO2000002119A1 (fr) * 1998-07-06 2000-01-13 Nissha Printing Co., Ltd. Film conducteur transparent pour ecran tactile transparent, ecran tactile transparent utilisant un film conducteur transparent, et procede de fabrication d'un film conducteur transparent
KR20010003504A (ko) * 1999-06-23 2001-01-15 김순택 터치 패널의 제조 방법
KR20010003503A (ko) * 1999-06-23 2001-01-15 김순택 터치 패널
KR20010003587A (ko) * 1999-06-24 2001-01-15 김순택 터치패널
KR20010038397A (ko) * 1999-10-25 2001-05-15 김순택 터치 패널의 제조 방법
KR20010051590A (ko) * 1999-11-10 2001-06-25 나가오카 마사시 저온환경하에서도 조작성이 개선된 터치패널

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101634923B (zh) * 2008-07-25 2011-12-28 株式会社日立显示器 显示装置
CN102722300A (zh) * 2012-04-02 2012-10-10 友达光电股份有限公司 触控面板及触控显示面板
TWI452612B (zh) * 2012-04-02 2014-09-11 Au Optronics Corp 觸控面板及觸控顯示面板
CN102722300B (zh) * 2012-04-02 2015-03-25 友达光电股份有限公司 触控面板及触控显示面板

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KR100368688B1 (ko) 2003-01-24

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