GB2314665B - Efficient backlighting for lcds - Google Patents

Efficient backlighting for lcds

Info

Publication number
GB2314665B
GB2314665B GB9722791A GB9722791A GB2314665B GB 2314665 B GB2314665 B GB 2314665B GB 9722791 A GB9722791 A GB 9722791A GB 9722791 A GB9722791 A GB 9722791A GB 2314665 B GB2314665 B GB 2314665B
Authority
GB
United Kingdom
Prior art keywords
lcds
efficient backlighting
backlighting
efficient
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.)
Expired - Fee Related
Application number
GB9722791A
Other versions
GB2314665A (en
GB9722791D0 (en
Inventor
Mark Gostick
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.)
Cambridge Display Technology Ltd
Original Assignee
Cambridge Display Technology 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
Priority claimed from GBGB9607434.9A external-priority patent/GB9607434D0/en
Application filed by Cambridge Display Technology Ltd filed Critical Cambridge Display Technology Ltd
Priority to GB9722791A priority Critical patent/GB2314665B/en
Priority claimed from PCT/GB1997/000939 external-priority patent/WO1997038347A1/en
Publication of GB9722791D0 publication Critical patent/GB9722791D0/en
Publication of GB2314665A publication Critical patent/GB2314665A/en
Application granted granted Critical
Publication of GB2314665B publication Critical patent/GB2314665B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
GB9722791A 1996-04-10 1997-04-02 Efficient backlighting for lcds Expired - Fee Related GB2314665B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9722791A GB2314665B (en) 1996-04-10 1997-04-02 Efficient backlighting for lcds

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB9607434.9A GB9607434D0 (en) 1996-04-10 1996-04-10 Efficient backlighting for lcd's
GBGB9615937.1A GB9615937D0 (en) 1996-04-10 1996-07-30 Efficient backlighting for LCDs
GB9722791A GB2314665B (en) 1996-04-10 1997-04-02 Efficient backlighting for lcds
PCT/GB1997/000939 WO1997038347A1 (en) 1996-04-10 1997-04-02 Efficient backlighting for lcds

Publications (3)

Publication Number Publication Date
GB9722791D0 GB9722791D0 (en) 1997-12-24
GB2314665A GB2314665A (en) 1998-01-07
GB2314665B true GB2314665B (en) 2000-05-17

Family

ID=27268232

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9722791A Expired - Fee Related GB2314665B (en) 1996-04-10 1997-04-02 Efficient backlighting for lcds

Country Status (1)

Country Link
GB (1) GB2314665B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11167122A (en) * 1997-12-03 1999-06-22 Nec Saitama Ltd Liquid crystal display device of luminous body built-in type and production of liquid crystal display device
GB2341973A (en) * 1998-09-24 2000-03-29 Screen Tech Ltd A laser screen for a flat panel display
US7436470B2 (en) 2002-07-06 2008-10-14 Spyder Navigations L.L.C. Display device having liquid crystal layer and switchable optical layer
GB2390437B (en) * 2002-07-06 2006-02-08 Nokia Corp A display device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3037224A1 (en) * 1980-10-02 1982-04-29 Philips Patentverwaltung Gmbh, 2000 Hamburg Electro-optical display - uses e.c.l. cell behind l.c.d. for illumination
JPS58221828A (en) * 1982-06-18 1983-12-23 Sharp Corp Display device
JPS5937530A (en) * 1982-08-27 1984-03-01 Hitachi Ltd Liquid crystal display device
US4775820A (en) * 1984-07-31 1988-10-04 Canon Kabushiki Kaisha Multilayer electroluminescent device
EP0701290A1 (en) * 1994-09-12 1996-03-13 Motorola, Inc. Organic light emitting diodes with molecular alignment and method of fabrication
US5504599A (en) * 1992-11-26 1996-04-02 Sharp Kabushiki Kaisha Liquid crystal display device having an EL light source in a non-display region or a region besides a display picture element

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3037224A1 (en) * 1980-10-02 1982-04-29 Philips Patentverwaltung Gmbh, 2000 Hamburg Electro-optical display - uses e.c.l. cell behind l.c.d. for illumination
JPS58221828A (en) * 1982-06-18 1983-12-23 Sharp Corp Display device
JPS5937530A (en) * 1982-08-27 1984-03-01 Hitachi Ltd Liquid crystal display device
US4775820A (en) * 1984-07-31 1988-10-04 Canon Kabushiki Kaisha Multilayer electroluminescent device
US5504599A (en) * 1992-11-26 1996-04-02 Sharp Kabushiki Kaisha Liquid crystal display device having an EL light source in a non-display region or a region besides a display picture element
EP0701290A1 (en) * 1994-09-12 1996-03-13 Motorola, Inc. Organic light emitting diodes with molecular alignment and method of fabrication

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
NATURE vol.370 no.6488 pages 354-357 *
Patent Abstracts of Japan vol. 8 no. 79 (P-267) & JP 58 221 828 A *
Patent Abstracts of Japan vol. 8 no.137 (P-282) & JP 59 037 530 A *

Also Published As

Publication number Publication date
GB2314665A (en) 1998-01-07
GB9722791D0 (en) 1997-12-24

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20120402