WO2014190599A1 - Écran tactile infrarouge - Google Patents

Écran tactile infrarouge Download PDF

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Publication number
WO2014190599A1
WO2014190599A1 PCT/CN2013/079814 CN2013079814W WO2014190599A1 WO 2014190599 A1 WO2014190599 A1 WO 2014190599A1 CN 2013079814 W CN2013079814 W CN 2013079814W WO 2014190599 A1 WO2014190599 A1 WO 2014190599A1
Authority
WO
WIPO (PCT)
Prior art keywords
infrared
lens
touch screen
disposed
received
Prior art date
Application number
PCT/CN2013/079814
Other languages
English (en)
Chinese (zh)
Inventor
孙文佳
尹大根
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Publication of WO2014190599A1 publication Critical patent/WO2014190599A1/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
    • G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
    • G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen

Definitions

  • Embodiments of the invention relate to an infrared touch screen. Background technique
  • the touch screen is not only suitable for multimedia information inquiry, but also has many advantages such as sturdy and durable, fast response, space saving, and easy communication.
  • touch technology users can operate the host computer by gently touching the icon or text on the computer display with their fingers, thus making human-computer interaction more straightforward. This technology greatly facilitates users who do not understand computer operation. .
  • the touch screen can be divided into four types: resistive type, capacitive sensing type, infrared type and surface acoustic wave type.
  • the infrared touch screen is immune to current, voltage and static electricity, and is suitable for harsh environmental conditions. Infrared technology is a trend in touch screen products.
  • the infrared touch screen includes a display screen and a touch module installed in front of the display screen.
  • the touch module includes a circuit board outer frame, and the outer frame of the circuit board is arranged on the four sides of the screen, and the infrared transmitting tube and the infrared receiving tube are arranged one by one.
  • the board frame uses an infrared matrix densely packed in the X and Y directions to detect and position the user's touch.
  • the number of tubes on the existing infrared touch screen is relatively large, and the arrangement is complicated, and detailed requirements for precise positioning are required.
  • FIG. 1 is a schematic structural view of a conventional infrared touch screen.
  • the touch screen includes a rectangular or square display panel 10 of a first side 1, a second side 2, a third side 3, and a fourth side 4.
  • the first side 1 and the third side 3 are oppositely disposed, and the second side 2 is disposed opposite to the fourth side 4.
  • a plurality of infrared receiving tubes 5 are disposed on the first side 1 and the second side 2, and infrared emitting tubes 6 corresponding to the infrared receiving tubes 5 are distributed on the third side 3 and the fourth side 4.
  • the infrared transmitting tubes on the third side 3 and the fourth side 4 adjacently disposed emit an intersecting infrared matrix.
  • the finger blocks the two infrared rays passing through the touched position, so that the position of the touched point on the screen can be judged. Since the infrared transmitting tube and the infrared receiving tube need to have a one-to-one correspondence, the structure is complicated, and the design requires high precision. Moreover, once a launch tube is damaged, it is not easy to find, which causes inconvenience in replacement. Summary of the invention
  • Embodiments of the present invention provide an infrared touch screen device that is structurally simple and low in cost.
  • One aspect of the present invention provides a quadrilateral display panel, wherein two adjacent first and second sides of the display panel are provided with a plurality of infrared receiving tubes, and two adjacent third sides are a plurality of coated lenses are respectively disposed on the fourth side, and the third side and the fourth side are respectively provided with at least one infrared emitting tube that emits infrared rays to the coated lens of the side; the 3 ⁇ 4 lens is integrated with the received infrared rays
  • the included angle is configured to reflect the infrared portion received from the corresponding infrared transmitting tube to the corresponding infrared receiving tube, and transmit the received infrared portion to the adjacent next mo lens.
  • the coated lens can be placed at 120-140 degrees from the received infrared light.
  • the coated lens may include a plane mirror and a coating provided on the surface of the plane mirror, the coating layer facing the incident direction of the infrared rays.
  • the at least one infrared transmitting tube may be disposed at an angle between the third side and the fourth side.
  • 3 ⁇ 4 lens furthest from the infrared emitter on the side may be a total reflection film.
  • At least one infrared emitting tube may be disposed between the plurality of coated lenses.
  • the at least one infrared transmitting tube can be an infrared LED.
  • the coated lens can be coupled to an adjustment unit for adjusting the angle of the !3 lens with the received infrared light.
  • the infrared touch screen of the embodiment of the present invention greatly reduces the number of infrared transmitting tubes to reduce power consumption and cost, and is easier to replace once the emitted light has a problem.
  • FIG. 1 is a schematic structural view of a conventional infrared touch screen
  • FIG. 2 is a schematic structural view of an infrared touch screen according to a first embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of an infrared touch screen according to a second embodiment of the present invention.
  • FIG. 4 is a schematic structural view of an infrared touch screen according to a third embodiment of the present invention. detailed description
  • the infrared touch screen includes a quadrilateral display panel 100.
  • the display panel 100 includes a first side 1, a second side 2, a third side 3, and a fourth side 4; the first side 1 and the second side 2 are disposed adjacent to each other, and the first side 1 and the third side 3 are oppositely disposed.
  • the third side 3 and the fourth side 4 are disposed adjacent to each other.
  • the first side 1 and the second side 2 adjacent to each other are provided with a plurality of infrared receiving tubes 5, and the third side 3 and the fourth side 4 are respectively provided with a plurality of 3 ⁇ 4 mo lenses 7, 3rd side 3 and The four sides 4 are respectively provided with an infrared emission tube 6 for emitting infrared rays to the coated lens 7 on the side.
  • the mo lens 7 is disposed at an angle ⁇ with the infrared ray received from the infrared emission tube 6 for partially reflecting the received infrared ray to the corresponding infrared receiving tube 5, and directing the received infrared ray portion to the next adjacent coating layer.
  • the lens 7 is transmitted.
  • the infrared transmitting tubes 6 on the third side 3 and the fourth side 4 disposed adjacently cooperate with the plurality of mo lenses 7 to emit an intersecting infrared matrix; when the user touches the touch screen of the embodiment, such as a finger or a touch The pen will block the two infrared rays passing through the touch point TP, so that the signal fed back by the infrared receiving tube 5 can determine the position of the touch point TP in the screen, and then perform the corresponding operation.
  • the infrared touch screen of this embodiment replaces a plurality of launch tubes on two adjacent sides of the display panel 100 shown in FIG. 1 with a single launch tube and a plurality of 3 ⁇ 4 lenses, respectively, by adjusting the lens and the incident light.
  • the angle of the light is such that the emitted light can be accurately received by the corresponding infrared receiving tube, thereby achieving the effect of the infrared touch screen.
  • the structure of the embodiment greatly reduces the number of infrared transmitting tubes, reduces power consumption, and saves cost. Since the number of infrared emission tubes is reduced to two, once problems occur, it is easier to find and replace them.
  • the surface of the coated lens 7 of the present embodiment is coated with a coating made of a reflective material for receiving The infrared rays partially reflect toward the corresponding infrared receiving tube 5 on the opposite side, and transmit the received infrared portion to the adjacent next coated lens 7.
  • the coating of the I3 ⁇ 4 lens 7 can be plated into a transflective film for the infrared wavelength emitted by the infrared emission tube 6, and the transmittance of the coating can be selected according to the screen size.
  • the coated lens of this embodiment is, for example, coated on the surface of the plane mirror with a coating facing the incident direction of the infrared ray, and the lens is disposed at 120-140 degrees with the received infrared ray, for example, 134-136 degrees. That is, the coated lens 7 is at about 45 degrees from the side (the third side 3 and the fourth side 4) where it is located.
  • the 3 ⁇ 4 lens 7 reflects a part of the received infrared light to the corresponding infrared receiving tube 5 on the opposite side, and the other part is transmitted to the adjacent next coated lens 7, the next coated lens 7 divides the received infrared light again.
  • the reflected light and the transmitted light are reflected, and the reflected light can be detected by the corresponding infrared receiving tube 5.
  • the magnetic lens 7 is used to realize the cross-set infrared rays, and the function of the infrared touch panel can also be realized.
  • the infrared emission tube 6 of the present embodiment is disposed at an angle between the third side and the fourth side, and may be, for example, an infrared light emitting diode (LED).
  • LED infrared light emitting diode
  • an infrared LED is used as an infrared emitting tube, which has the advantages of good chromaticity, high brightness, strong directivity, and difficulty in diverging light, thereby achieving the use of LEDs with a small number of pixels to emit infrared light.
  • the first infrared emission tube 61 on the third side 3 is disposed at a corner of the third side 3 near the fourth side 4, and emits infrared light to the coated lens 7 on the third side 3.
  • the second infrared emission tube 62 on the fourth side 4 is disposed at a corner of the fourth side 4 near the third side 3, and emits infrared light to the I3 ⁇ 4 lens 7 on the fourth side 4.
  • the third side 3 and the fourth side 4 are farthest from the infrared emitting tube 6 on the side of the side; 3 ⁇ 4
  • the coating on the lens 7 may be The total reflection film, whereby no light is transmitted to the frame outside the farthest lens 31.
  • the infrared touch screen of the embodiment includes a rectangular display panel 200.
  • the first side 1 and the third side 3 of the display panel 200 are long sides, and the second side is 2 and the fourth side 4 are short sides.
  • the fourth side 4 of the long side is provided with a plurality of 3 ⁇ 4 lenses 7, and another infrared transmitting tube 6, i.e., a third infrared transmitting tube 63, is disposed between the 3 ⁇ 4 lenses 7.
  • a circuit board outer frame may be disposed at a front portion of the display panel, and the infrared emitting tube 6 and the infrared receiving tube 5 and the coated lens 7 are disposed in the outer frame of the circuit board.
  • the specific structure of the circuit board outer frame can be, for example, the design of the circuit board outer frame of the existing touch screen.
  • the third infrared transmitting tube 63 is disposed, for example, at a distance of the third side 3
  • the end of the first infrared emission tube 61 is placed at a position of about half or 2/3 of the length, and is disposed at the same height as the first infrared emission tube 61.
  • an infrared emission tube 6 is further disposed between the mo lenses 7.
  • the infrared emission tube 6 is adjacent to the second side 2 to enhance the intensity of the infrared light.
  • the original light intensity is 1, the Mo's reflectivity is a, and the transmittance is (1-a).
  • an infrared emission tube 6 is added to enhance the intensity of the infrared light.
  • another third infrared emission tube 63 is disposed between the coated lenses on the third side 3, and an infrared emission tube may be disposed on the fourth side 4 of the short side.
  • more infrared emission tubes 6 can be provided to enhance the intensity of the infrared light.
  • the infrared touch screen of the embodiment includes a square display panel 300.
  • the front panel of the display panel 300 is provided with a circuit board frame, an infrared emitting tube 6 and an infrared
  • the receiving tube 5 and the ?3 lens 7 are disposed in the outer frame of the circuit board.
  • Each of the lenses of this embodiment is connected to an adjustment unit 8 for adjusting the angle between the lens and the received infrared light.
  • Each of the 3 ⁇ 4 lenses 7 of the present embodiment is connected to the side, for example, via a rotating shaft.
  • the adjusting unit 8 is connected to each of the rotating shafts by a motor, and is adjusted by the rotation of the driving motor to adjust the inclination of the lens 7 with the side.
  • the adjusting unit 8 of the present embodiment can also precisely adjust the inclination of the lens 7 according to the display result, for example, dynamically adjusting the angle between the mo lens 7 and the infrared ray received from the infrared emission tube 6 according to the display result.
  • the infrared touch screen of the embodiment of the present invention replaces a plurality of launch tubes on two adjacent sides of the display panel with a single launch tube and a plurality of 3 ⁇ 4 lenses, by adjusting the angle between the lens and the incident light.
  • the outgoing light can be accurately received by the corresponding infrared receiving tube, thereby achieving low power consumption and cost saving. Since the number of infrared emission tubes is reduced to two, it is easier to replace in case of problems.

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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

Un écran tactile infrarouge comprend une dalle d'affichage quadrilatérale. Une pluralité de récepteurs infrarouges est placée sur un premier côté et un deuxième côté qui sont adjacents sur la dalle d'affichage. Une pluralité de lentilles traitées est placée séparément sur un troisième côté et un quatrième côté qui sont adjacents sur la dalle d'affichage. Au moins un émetteur infrarouge est placé séparément sur le troisième côté et le quatrième côté. L'émetteur infrarouge émet une lumière infrarouge sur chaque lentille traitée, sur le côté où l'émetteur infrarouge est placé. Un angle inclus est formé entre la lentille traitée et la lumière infrarouge reçue. La lentille traitée est utilisée pour réfléchir partiellement la lumière infrarouge reçue vers le récepteur infrarouge correspondant et transmettre partiellement la lumière infrarouge reçue à la lentille traitée adjacente. L'écran tactile infrarouge peut réduire le nombre d'émetteurs infrarouges et donc la consommation d'énergie, et économiser les coûts. Un problème est facile à détecter et le remplacement simplifié.
PCT/CN2013/079814 2013-05-30 2013-07-22 Écran tactile infrarouge WO2014190599A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310209797.1A CN103268173B (zh) 2013-05-30 2013-05-30 一种红外触摸屏
CN201310209797.1 2013-05-30

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Publication Number Publication Date
WO2014190599A1 true WO2014190599A1 (fr) 2014-12-04

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CN (1) CN103268173B (fr)
WO (1) WO2014190599A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN103559010A (zh) * 2013-11-07 2014-02-05 京东方科技集团股份有限公司 显示面板及其显示方法、显示装置
CN103699275A (zh) * 2013-12-31 2014-04-02 广州视睿电子科技有限公司 反射式触摸屏及其应用方法
CN104156123B (zh) 2014-07-15 2017-07-25 合肥鑫晟光电科技有限公司 一种红外触摸屏和显示装置
CN104615312B (zh) * 2015-02-12 2017-08-25 南京中科神光科技有限公司 一种计数型红外触摸屏
CN105867683B (zh) * 2016-03-25 2019-01-04 浙江宝隆信息科技股份有限公司 一种具有智能识别功能的触控系统及其控制方法
CN107168571B (zh) * 2017-04-21 2020-04-03 河北慧华教学设备制造有限公司 一种红外触摸模组
CN114168010B (zh) * 2021-12-06 2024-03-15 深圳市佳锐拓科技有限公司 一种反射式红外触摸屏

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CN101916152A (zh) * 2010-08-31 2010-12-15 广东威创视讯科技股份有限公司 一种多点触摸的红外定位装置及方法
CN102436331A (zh) * 2011-12-22 2012-05-02 上海理工大学 一种用于红外触摸屏的光学引擎

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JP4193544B2 (ja) * 2003-03-27 2008-12-10 セイコーエプソン株式会社 光学式タッチパネル及び電子機器
CN101424993B (zh) * 2007-11-02 2011-06-15 群康科技(深圳)有限公司 红外线触控系统
KR20100056117A (ko) * 2008-11-19 2010-05-27 삼성전자주식회사 광학식 터치스크린 장치
CN102722292B (zh) * 2012-06-01 2015-02-18 合肥工业大学 基于振镜的多点触摸系统
CN102880358A (zh) * 2012-09-29 2013-01-16 深圳市深越光电技术有限公司 一种红外触控屏

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CN102436331A (zh) * 2011-12-22 2012-05-02 上海理工大学 一种用于红外触摸屏的光学引擎

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CN103268173A (zh) 2013-08-28
CN103268173B (zh) 2016-06-01

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