WO2019218109A1 - Dispositif d'écran d'affichage à cristaux liquides destiné à reconnaître un article interactif, et procédé de reconnaissance d'article interactif associé - Google Patents

Dispositif d'écran d'affichage à cristaux liquides destiné à reconnaître un article interactif, et procédé de reconnaissance d'article interactif associé Download PDF

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Publication number
WO2019218109A1
WO2019218109A1 PCT/CN2018/086687 CN2018086687W WO2019218109A1 WO 2019218109 A1 WO2019218109 A1 WO 2019218109A1 CN 2018086687 W CN2018086687 W CN 2018086687W WO 2019218109 A1 WO2019218109 A1 WO 2019218109A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
liquid crystal
crystal display
layer
led lamp
Prior art date
Application number
PCT/CN2018/086687
Other languages
English (en)
Chinese (zh)
Inventor
曾宏
陈永新
李振全
Original Assignee
深圳盈天下视觉科技有限公司
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 深圳盈天下视觉科技有限公司 filed Critical 深圳盈天下视觉科技有限公司
Priority to PCT/CN2018/086687 priority Critical patent/WO2019218109A1/fr
Publication of WO2019218109A1 publication Critical patent/WO2019218109A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light

Definitions

  • the present invention provides a liquid crystal display device for recognizing an interactive object, such as a two-dimensional code, a barcode, and the like, which can be read and on the screen in the case of being in close contact with the screen.
  • the position is tracked in real time, and it can display the contents of the LCD screen normally.
  • the light homogenizing film layer comprises a light homogenizing sheet disposed above the PCB bottom plate and a light homogenizing film disposed on the light homogenizing sheet, and the through hole is disposed on the light homogenizing sheet.
  • the protective layer is tempered glass.
  • the light emitted by the visible light LED lamp is homogenized by the homogenizing film layer to provide a backlight for the liquid crystal display layer, and the visible light reflected by the liquid crystal display layer is reused in the homogenizing film layer backlight; the infrared fill light LED lamp is emitted The light is sequentially irradiated through the homogenizing film layer, the liquid crystal display layer and the protective layer on the graphic code of the interactive object;
  • the light generating reflection of the illumination recognition pattern code is collected by the infrared camera and identifies the image information of the graphic code
  • the light-homogenizing film layer comprises a light-shielding sheet disposed above the PCB substrate and a light-homogenizing film disposed above the light-shading sheet, and the through hole is disposed on the light-shading sheet.
  • FIG. 1 is a schematic diagram of a liquid crystal display device for identifying an interactive object according to the present invention
  • FIG. 2 is a light path of a liquid crystal display layer in a liquid crystal display device for identifying an interactive object according to the present invention
  • FIG. 3 is a schematic diagram of an optical path of an infrared fill LED lamp in a liquid crystal display device for identifying an interactive object according to the present invention
  • FIG. 4 is a schematic diagram of an optical path of an infrared camera receiving light in a liquid crystal display device for identifying an interactive object according to the present invention.
  • the liquid crystal display device includes a top-down protective layer 10, a liquid crystal display layer 20, and a backlight 30.
  • the backlight 30 includes a PCB bottom plate 31, and is distributed on the PCB bottom plate 31.
  • a uniform film for homogenizing the light emitted from the visible light LED lamp 32 and the infrared fill light LED lamp 33 is provided above the PCB bottom plate 31, a uniform film for homogenizing the light emitted from the visible light LED lamp 32 and the infrared fill light LED lamp 33 is provided.
  • the graphic code 101 on the bottom surface of the interactive object 100 is generally a two-dimensional code or a barcode, and is printed by paper carbon ink.
  • the light homogenizing film layer 35 includes a light homogenizing sheet 351 disposed above the PCB bottom plate 31 and a light homogenizing film 352 disposed above the light homogenizing sheet.
  • the through hole 3501 is disposed on the light homogenizing sheet 351, and the infrared camera 34 is provided.
  • the infrared rays reflected from the graphic code of the interactive object 100 are received through the through holes 3501 on the light homogenizing sheet 351.
  • the light emitted by the visible light LED lamp belongs to the visible spectrum range; the infrared fill light LED lamp may be an infrared light of different wavelength ranges; the infrared camera may be other infrared cameras of different wavelength ranges; .
  • the protective layer 10 is made of tempered glass;
  • the light homogenizing sheet 351 is made of PS (polystyrene), PMMA (polymethyl methacrylate), PC (polycarbonate), PP (polypropylene), PVC ( Polyvinyl chloride), PET (polyester resin) and other materials are formed;
  • the homogenizing film 352 is made of PS (polystyrene), PMMA (polymethyl methacrylate), PC (polycarbonate), PP (polypropylene) ), PV C (polyvinyl chloride), PET (polyester resin) and other materials are formed.
  • the present invention also provides a method for identifying an interactive object by a liquid crystal display device, comprising the following steps:
  • the light emitted by the visible light LED lamp 32 is homogenized by the light-homogenizing film layer 34 to provide a backlight for the liquid crystal display layer 20, and the visible light reflected by the liquid crystal display layer 20 is backlit and reused in the light-homogenizing film layer 35;
  • the light emitted by the fill light LED lamp 33 sequentially passes through the light homogenizing film layer 34, the liquid crystal display layer 20 and the protective layer 10 to illuminate the graphic code 101 of the interactive object 100;
  • the light-reflecting of the illumination pattern code 101 is acquired by the infrared camera 35 and the image information of the graphic code 101 is recognized.
  • the light-homogenizing film layer 35 is provided with a through hole 3501 corresponding to the infrared camera 34.
  • the light homogenizing film layer 35 includes a light homogenizing sheet 351 disposed above the PCB bottom plate 31 and a light homogenizing film 352 disposed above the light homogenizing sheet 351.
  • the through hole 3501 is disposed on the light homogenizing sheet 351, and the infrared camera 34 passes through The through hole 3501 on the light homogenizer 351 receives infrared rays reflected from the graphic code of the interactive object 100.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal (AREA)

Abstract

La présente invention concerne un dispositif d'écran d'affichage à cristaux liquides destiné à reconnaître un article interactif, qui relève du domaine de la reconnaissance d'image. Le dispositif comprend une couche de protection, une couche d'affichage à cristaux liquides et une source de rétroéclairage de haut en bas. La source de rétroéclairage comprend une plaque inférieure de PCB, la plaque inférieure de PCB étant pourvue d'une lampe à DEL à lumière visible, d'une lampe à DEL de supplémentation de lumière infrarouge et d'une caméra infrarouge pour reconnaître un motif. Une couche de membrane d'uniformisation de lumière, qui est utilisée pour uniformiser la lumière émise par la lampe à DEL à lumière visible et la lampe à DEL de supplémentation en lumière infrarouge, est disposée au-dessus de la plaque inférieure de PCB, et la couche de membrane d'uniformisation de lumière est pourvue d'un trou traversant correspondant à la caméra infrarouge. Par comparaison avec l'état de la technique, selon le dispositif d'écran d'affichage à cristaux liquides et le procédé de reconnaissance d'un article interactif associé, un article interactif étant étroitement fixé à un écran, la lumière émise par la lampe à DEL de supplémentation de lumière infrarouge passe à travers la couche de membrane d'uniformisation de lumière et la couche d'affichage à cristaux liquides pour irradier l'article interactif avec un code graphique, et des informations du code graphique sont lues par la caméra infrarouge, et la position est suivie en temps réel sur l'écran; de plus, la lumière émise par la lampe à DEL à lumière visible est uniformisée par la couche de membrane d'uniformisation de lumière, de façon à afficher normalement le contenu de l'écran à cristaux liquides normalement.
PCT/CN2018/086687 2018-05-14 2018-05-14 Dispositif d'écran d'affichage à cristaux liquides destiné à reconnaître un article interactif, et procédé de reconnaissance d'article interactif associé WO2019218109A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/086687 WO2019218109A1 (fr) 2018-05-14 2018-05-14 Dispositif d'écran d'affichage à cristaux liquides destiné à reconnaître un article interactif, et procédé de reconnaissance d'article interactif associé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/086687 WO2019218109A1 (fr) 2018-05-14 2018-05-14 Dispositif d'écran d'affichage à cristaux liquides destiné à reconnaître un article interactif, et procédé de reconnaissance d'article interactif associé

Publications (1)

Publication Number Publication Date
WO2019218109A1 true WO2019218109A1 (fr) 2019-11-21

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Family Applications (1)

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PCT/CN2018/086687 WO2019218109A1 (fr) 2018-05-14 2018-05-14 Dispositif d'écran d'affichage à cristaux liquides destiné à reconnaître un article interactif, et procédé de reconnaissance d'article interactif associé

Country Status (1)

Country Link
WO (1) WO2019218109A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220189135A1 (en) * 2020-01-18 2022-06-16 Shenzhen Xhorse Electronics Co., Ltd Method and apparatus for recognizing bitting code of key, and storage medium and image collection device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6105869A (en) * 1997-10-31 2000-08-22 Microscan Systems, Incorporated Symbol reading device including optics for uniformly illuminating symbology
CN101776816A (zh) * 2010-03-04 2010-07-14 友达光电股份有限公司 光学式触控显示面板
CN104463107A (zh) * 2014-11-21 2015-03-25 上海箩箕技术有限公司 背光板、光学成像装置及身份识别设备
CN105069390A (zh) * 2015-07-27 2015-11-18 深圳市民德电子科技股份有限公司 使用平面光源照明的条形码识读设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6105869A (en) * 1997-10-31 2000-08-22 Microscan Systems, Incorporated Symbol reading device including optics for uniformly illuminating symbology
CN101776816A (zh) * 2010-03-04 2010-07-14 友达光电股份有限公司 光学式触控显示面板
CN104463107A (zh) * 2014-11-21 2015-03-25 上海箩箕技术有限公司 背光板、光学成像装置及身份识别设备
CN105069390A (zh) * 2015-07-27 2015-11-18 深圳市民德电子科技股份有限公司 使用平面光源照明的条形码识读设备

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220189135A1 (en) * 2020-01-18 2022-06-16 Shenzhen Xhorse Electronics Co., Ltd Method and apparatus for recognizing bitting code of key, and storage medium and image collection device
US11790626B2 (en) * 2020-01-18 2023-10-17 Shenzhen Xhorse Electronics Co., Ltd Method and apparatus for recognizing bitting code of key, and storage medium and image collection device

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