TW200819675A - Keypad light guide - Google Patents

Keypad light guide Download PDF

Info

Publication number
TW200819675A
TW200819675A TW096132126A TW96132126A TW200819675A TW 200819675 A TW200819675 A TW 200819675A TW 096132126 A TW096132126 A TW 096132126A TW 96132126 A TW96132126 A TW 96132126A TW 200819675 A TW200819675 A TW 200819675A
Authority
TW
Taiwan
Prior art keywords
regions
light
film
microstructure features
source
Prior art date
Application number
TW096132126A
Other languages
English (en)
Chinese (zh)
Inventor
Charles David Hoyle
Original Assignee
3M Innovative Properties Co
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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of TW200819675A publication Critical patent/TW200819675A/zh

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/006—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to produce indicia, symbols, texts or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements
    • H01H2219/044—Edge lighting of layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/056—Diffuser; Uneven surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/064—Optical isolation of switch sites

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)
  • Planar Illumination Modules (AREA)
  • Input From Keyboards Or The Like (AREA)
TW096132126A 2006-08-30 2007-08-29 Keypad light guide TW200819675A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/468,522 US7498534B2 (en) 2006-08-30 2006-08-30 Keypad light guide

Publications (1)

Publication Number Publication Date
TW200819675A true TW200819675A (en) 2008-05-01

Family

ID=39136261

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096132126A TW200819675A (en) 2006-08-30 2007-08-29 Keypad light guide

Country Status (7)

Country Link
US (1) US7498534B2 (enExample)
EP (1) EP2057651A4 (enExample)
JP (1) JP2010503155A (enExample)
KR (1) KR20090074723A (enExample)
CN (1) CN101512697A (enExample)
TW (1) TW200819675A (enExample)
WO (1) WO2008027716A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI497130B (zh) * 2010-08-19 2015-08-21 Intellectual Discovery Co Ltd 用於小鍵盤及顯示裝置之多段光導

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KR100700143B1 (ko) * 2005-12-02 2007-03-28 엘지전자 주식회사 터치 키패드의 키선택 표시 장치 및 그 방법
CN101364487A (zh) * 2007-08-09 2009-02-11 鸿富锦精密工业（深圳）有限公司 发光键盘
US20090091912A1 (en) * 2007-10-09 2009-04-09 Hsin-Chin Lee Light-guiding key structure with lateral light-guiding function
CN101488408B (zh) * 2008-01-14 2012-07-25 深圳富泰宏精密工业有限公司 电子装置的按键面板结构及其制造方法
CN101256911B (zh) * 2008-04-11 2012-06-06 精模电子科技（深圳）有限公司 具有导光板的发光键盘
WO2010006102A2 (en) 2008-07-10 2010-01-14 3M Innovative Properties Company Retroreflective articles and devices having viscoelastic lightguide
EP2313800A4 (en) * 2008-07-10 2014-03-19 3M Innovative Properties Co VISCOELASTIC LIGHT GUIDE
CN102138086B (zh) 2008-07-10 2014-11-26 3M创新有限公司 具有粘弹性光导的回射制品和装置
EP2321677A4 (en) * 2008-08-08 2011-08-17 3M Innovative Properties Co LIGHT PIPE HAVING VISCOELASTIC LAYER FOR MANAGING LIGHT
US8142036B2 (en) * 2009-03-12 2012-03-27 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Keypad device with light source and reflector
US8317384B2 (en) * 2009-04-10 2012-11-27 Intellectual Discovery Co., Ltd. Light guide film with cut lines, and optical keypad using such film
US8502098B1 (en) * 2009-06-23 2013-08-06 American Trim, Llc Appliance control panel
US9464769B2 (en) 2009-09-11 2016-10-11 Dolby Laboratories Licensing Corporation Techniques for using quantum dots to regenerate light in display systems
WO2011100277A1 (en) 2010-02-10 2011-08-18 3M Innovative Properties Company Illumination device having viscoelastic layer
TWM388085U (en) * 2010-03-15 2010-09-01 Ichia Tech Inc Keyboard structure with backlighting
JP2012209127A (ja) * 2011-03-30 2012-10-25 Alps Electric Co Ltd 導光シート、これを用いた接点ばね付シート及びこれを用いたスイッチ装置
US8901405B1 (en) 2013-08-22 2014-12-02 McCarthy Music Corp. Electronic piano training device
US9082313B1 (en) 2014-07-21 2015-07-14 McCarthy Music Corp. Interactive piano training system
US9070312B2 (en) 2013-11-05 2015-06-30 3M Innovative Properties Company Hybrid self illuminated and actively back lit signage for printed graphics
WO2015148244A2 (en) 2014-03-26 2015-10-01 Dolby Laboratories Licensing Corporation Global light compensation in a variety of displays
PL3183726T3 (pl) 2014-08-21 2020-02-28 Dolby Laboratories Licensing Corporation Techniki realizujące podwójną modulację z konwersją światła
US9746168B1 (en) 2015-10-30 2017-08-29 American Opto Plus Led Corporation Light-emitting touch buttons
US12395172B2 (en) * 2023-06-14 2025-08-19 Darfon Electronics Corp. Touch input device
USD1121572S1 (en) * 2024-09-11 2026-04-07 Global Industries Holdings, Ltd. Light controller face panel
USD1121566S1 (en) * 2024-09-11 2026-04-07 Global Industries Holdings, Ltd. Light controller face panel
USD1121574S1 (en) * 2024-09-11 2026-04-07 Global Industries Holdings, Ltd. Light controller face panel
USD1121567S1 (en) * 2024-10-22 2026-04-07 Global Industries Holdings, Ltd. Light controller face panel
USD1121568S1 (en) * 2024-10-22 2026-04-07 Global Industries Holdings, Ltd. Light controller face panel

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EP1724800B1 (en) * 2005-05-19 2008-12-17 Samsung Electronics Co., Ltd. Key pad and keypad assembly
TWI285721B (en) * 2005-12-02 2007-08-21 Hon Hai Prec Ind Co Ltd Light guide plate and method for manufacturing the light guide plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI497130B (zh) * 2010-08-19 2015-08-21 Intellectual Discovery Co Ltd 用於小鍵盤及顯示裝置之多段光導

Also Published As

Publication number Publication date
EP2057651A4 (en) 2012-09-05
US7498534B2 (en) 2009-03-03
WO2008027716A1 (en) 2008-03-06
KR20090074723A (ko) 2009-07-07
CN101512697A (zh) 2009-08-19
US20080053800A1 (en) 2008-03-06
EP2057651A1 (en) 2009-05-13
JP2010503155A (ja) 2010-01-28

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