CA2239452A1 - Liquid crystal display - Google Patents

Liquid crystal display

Info

Publication number
CA2239452A1
CA2239452A1 CA002239452A CA2239452A CA2239452A1 CA 2239452 A1 CA2239452 A1 CA 2239452A1 CA 002239452 A CA002239452 A CA 002239452A CA 2239452 A CA2239452 A CA 2239452A CA 2239452 A1 CA2239452 A1 CA 2239452A1
Authority
CA
Canada
Prior art keywords
light
liquid crystal
guiding plate
crystal panel
display portion
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002239452A
Other languages
French (fr)
Other versions
CA2239452C (en
Inventor
Shozo Kokawa
Michiharu Nishihara
Yukikazu Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Individual
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
Priority claimed from JP4165298A external-priority patent/JP2931480B2/en
Priority claimed from JP4345012A external-priority patent/JPH06194652A/en
Priority claimed from JP02745793A external-priority patent/JP3263460B2/en
Application filed by Individual filed Critical Individual
Priority to CA002239452A priority Critical patent/CA2239452C/en
Priority claimed from CA002097109A external-priority patent/CA2097109C/en
Publication of CA2239452A1 publication Critical patent/CA2239452A1/en
Application granted granted Critical
Publication of CA2239452C publication Critical patent/CA2239452C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Planar Illumination Modules (AREA)

Abstract

A light converging unit using a prism lens adapted for use in a back light device and which enables the device to be manufactured in a thinner size and at a lower cost. A liquid crystal display comprises a display means for displaying characters and graphics, the means including a display portion comprising at least a liquid crystal panel; an illuminating means for illuminating the display portion of the liquid crystal panel, and a converging means for converging light rays from the illuminating means at the display portion of the liquid crystal panel wherein, the illuminating means comprises a lamp, a light-guiding plate for receiving therein light rays of the lamp through a lateral surface thereof and for uniformly propagating and diffusing the light rays therein, a reflecting plate disposed on the rear surface of the light-guiding plate to reflect light rays from the rear surface of the light-guiding plate, and a diffusing plate disposed on the front surface of the light-guiding plate to diffuse light rays from the front surface of the light-guiding plate; and that the converging means, the light-guiding plate, the reflecting plate, and the diffusing plate are integrally welded to each other at least one peripheral position not affecting the display portion of the liquid crystal panel.
CA002239452A 1992-06-01 1993-05-27 Liquid crystal display Expired - Fee Related CA2239452C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002239452A CA2239452C (en) 1992-06-01 1993-05-27 Liquid crystal display

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP4165298A JP2931480B2 (en) 1992-06-01 1992-06-01 Light collecting device used for light source device
JP4-165298 1992-06-01
JP23455692 1992-09-02
JP4-234556 1992-09-02
JP4345012A JPH06194652A (en) 1992-12-25 1992-12-25 Liquid crystal display device
JP4-345012 1992-12-25
JP02745793A JP3263460B2 (en) 1992-09-02 1993-01-21 Backlight device
JP5-027457 1993-01-21
CA002239452A CA2239452C (en) 1992-06-01 1993-05-27 Liquid crystal display
CA002097109A CA2097109C (en) 1992-06-01 1993-05-27 Liquid crystal display

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002097109A Division CA2097109C (en) 1992-06-01 1993-05-27 Liquid crystal display

Publications (2)

Publication Number Publication Date
CA2239452A1 true CA2239452A1 (en) 1993-12-02
CA2239452C CA2239452C (en) 2001-07-03

Family

ID=27508506

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002239452A Expired - Fee Related CA2239452C (en) 1992-06-01 1993-05-27 Liquid crystal display
CA002239477A Expired - Fee Related CA2239477C (en) 1992-06-01 1993-05-27 Liquid crystal display

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002239477A Expired - Fee Related CA2239477C (en) 1992-06-01 1993-05-27 Liquid crystal display

Country Status (1)

Country Link
CA (2) CA2239452C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110133908A (en) * 2019-04-11 2019-08-16 深圳康佳电子科技有限公司 A kind of the modularized production method and its structure of liquid crystal display television optical element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110133908A (en) * 2019-04-11 2019-08-16 深圳康佳电子科技有限公司 A kind of the modularized production method and its structure of liquid crystal display television optical element

Also Published As

Publication number Publication date
CA2239477A1 (en) 1993-12-02
CA2239477C (en) 2001-07-03
CA2239452C (en) 2001-07-03

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Legal Events

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MKLA Lapsed