CA2229931A1 - Light reflectant surface for backlit liquid crystal displays - Google Patents
Light reflectant surface for backlit liquid crystal displaysInfo
- Publication number
- CA2229931A1 CA2229931A1 CA002229931A CA2229931A CA2229931A1 CA 2229931 A1 CA2229931 A1 CA 2229931A1 CA 002229931 A CA002229931 A CA 002229931A CA 2229931 A CA2229931 A CA 2229931A CA 2229931 A1 CA2229931 A1 CA 2229931A1
- Authority
- CA
- Canada
- Prior art keywords
- liquid crystal
- present
- crystal displays
- light
- reflectivity
- 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
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
Abstract
The present invention is an improved material and method for use for providing diffuse reflectivity of light in backlighted visual displays, such as liquid crystal displays (LCD) employed in a wide variety of applications. By employing an expanded polytetrafluoroethylene (PTFE) comprising a microstructure of polymeric nodes and fibrils, the material of the present invention demonstrates exceptional diffuse reflectivity across a wide spectrum of visible light. Additionally, the material of the present invention provides many properties that have been previously unavailable in highly diffuse reflective material, including a high degree of malleability, moldability and flexibility, and effective reflectivity even at relatively thin cross sections.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/520,633 | 1995-08-29 | ||
US08/520,633 US5838406A (en) | 1995-08-29 | 1995-08-29 | Light reflectant surface of expanded polytetrafluoroethylene with nodes and fibrils for backlit liquid crystal displays |
PCT/US1996/012825 WO1997008571A1 (en) | 1995-08-29 | 1996-08-06 | Light reflectant surface for backlit liquid crystal displays |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2229931A1 true CA2229931A1 (en) | 1997-03-06 |
CA2229931C CA2229931C (en) | 2001-04-03 |
Family
ID=24073440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002229931A Expired - Fee Related CA2229931C (en) | 1995-08-29 | 1996-08-06 | Light reflectant surface for backlit liquid crystal displays |
Country Status (6)
Country | Link |
---|---|
US (1) | US5838406A (en) |
EP (1) | EP0847538A1 (en) |
JP (1) | JP3920339B2 (en) |
AU (1) | AU708836B2 (en) |
CA (1) | CA2229931C (en) |
WO (1) | WO1997008571A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7281834B2 (en) | 2004-01-28 | 2007-10-16 | Photoglow, Inc. | Method and apparatus for image illumination using self-contained luminaire |
Families Citing this family (27)
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---|---|---|---|---|
US5781342A (en) * | 1995-01-06 | 1998-07-14 | W.L. Gore & Associates, Inc. | High light diffusive and low light absorbent material and method for making and using same |
US5905594A (en) * | 1995-01-06 | 1999-05-18 | W. L. Gore & Associates, Inc. | Light reflectant surface in a recessed cavity substantially surrounding a compact fluorescent lamp |
US5982542A (en) * | 1995-01-06 | 1999-11-09 | W. L. Gore & Associates, Inc. | High light diffusive and low light absorbent material and method for making and using same |
US6015610A (en) * | 1995-01-06 | 2000-01-18 | W. L. Gore & Associates, Inc. | Very thin highly light reflectant surface and method for making and using same |
US5892621A (en) * | 1995-01-06 | 1999-04-06 | W. L. Gore & Associates, Inc. | Light reflectant surface for luminaires |
US5982548A (en) * | 1997-05-19 | 1999-11-09 | W. L. Gore & Associates, Inc. | Thin light reflectant surface and method for making and using same |
US5976686A (en) * | 1997-10-24 | 1999-11-02 | 3M Innovative Properties Company | Diffuse reflective articles |
US6123442A (en) * | 1997-10-24 | 2000-09-26 | Minnesota Mining And Manufacturing Company | Articles with diffuse reflection of light from light fibers |
US6863428B2 (en) | 1997-10-24 | 2005-03-08 | 3M Innovative Properties Company | Light guide illumination device appearing uniform in brightness along its length |
US6301418B1 (en) | 1997-10-24 | 2001-10-09 | 3M Innovative Properties Company | Optical waveguide with diffuse light extraction |
US6424395B1 (en) | 1998-04-08 | 2002-07-23 | Toppan Printing Co., Ltd. | Light scattering film and liquid crystal display device |
US6741788B2 (en) * | 1999-07-01 | 2004-05-25 | Honeywell International Inc | Efficient light distribution system |
CA2340001A1 (en) * | 1998-08-18 | 2000-03-02 | William G. Hardie | Contaminant resistant, cleanable, light reflective surface |
FR2802692B1 (en) * | 1999-12-17 | 2003-05-16 | Thomson Csf Sextant | LIGHTING DEVICE FOR A LIQUID CRYSTAL SCREEN |
US20030067439A1 (en) * | 2001-10-09 | 2003-04-10 | Lichtfuss Hans A. | Digital clipboard |
JP3795027B2 (en) * | 2003-04-02 | 2006-07-12 | 宇明泰化工股▲ふん▼有限公司 | Asymmetric porous polytetrafluoroethylene membrane for filters |
US20050136200A1 (en) * | 2003-12-19 | 2005-06-23 | Durell Christopher N. | Diffuse high reflectance film |
TW200525239A (en) * | 2004-01-30 | 2005-08-01 | Chi Mei Optoelectronics Corp | Box seat of back-light module |
TWI290653B (en) * | 2004-01-30 | 2007-12-01 | Chi Lin Technology Co Ltd | Casing of bottom lighting backlight module |
US7389020B2 (en) | 2005-01-28 | 2008-06-17 | Intier Automotive Inc. | Light pipe assembly |
CN100401155C (en) * | 2005-03-11 | 2008-07-09 | 奇菱科技股份有限公司 | Box of backlight module |
US7306729B2 (en) * | 2005-07-18 | 2007-12-11 | Gore Enterprise Holdings, Inc. | Porous PTFE materials and articles produced therefrom |
US20070211184A1 (en) * | 2006-03-10 | 2007-09-13 | Luminus Devices, Inc. | Liquid crystal display systems including LEDs |
US7468519B2 (en) * | 2006-12-05 | 2008-12-23 | The Boeing Company | Near infrared light diffuser |
CN101452087B (en) * | 2007-12-06 | 2012-07-18 | 鸿富锦精密工业(深圳)有限公司 | Back light module unit and prismatic lens thereof |
US7717591B2 (en) * | 2007-12-27 | 2010-05-18 | Lumination Llc | Incorporating reflective layers into LED systems and/or components |
KR101338996B1 (en) * | 2008-12-26 | 2013-12-09 | 엘지디스플레이 주식회사 | Liquid crystal display device |
Family Cites Families (39)
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US3962153A (en) * | 1970-05-21 | 1976-06-08 | W. L. Gore & Associates, Inc. | Very highly stretched polytetrafluoroethylene and process therefor |
SE392582B (en) * | 1970-05-21 | 1977-04-04 | Gore & Ass | PROCEDURE FOR THE PREPARATION OF A POROST MATERIAL, BY EXPANDING AND STRETCHING A TETRAFLUORETENE POLYMER PREPARED IN AN PASTE-FORMING EXTENSION PROCEDURE |
US3968639A (en) * | 1971-06-03 | 1976-07-13 | American Cyanamid Company | Electrochromic information displays |
US3839957A (en) * | 1971-06-08 | 1974-10-08 | Burroughs Corp | Electro-mechanical printer |
US4035085A (en) * | 1973-06-29 | 1977-07-12 | Ppg Industries, Inc. | Method and apparatus for comparing light reflectance of a sample against a standard |
US4096227A (en) * | 1973-07-03 | 1978-06-20 | W. L. Gore & Associates, Inc. | Process for producing filled porous PTFE products |
US4182551A (en) * | 1976-12-20 | 1980-01-08 | Tokyo Shibaura Electric Co., Ltd. | Electrochromic display device |
JPS5387251A (en) * | 1977-01-10 | 1978-08-01 | Matsushita Electric Ind Co Ltd | Display device |
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JPS5532045A (en) * | 1978-08-28 | 1980-03-06 | Sumitomo Electric Ind Ltd | Electrochromic display device |
US4354741A (en) * | 1979-10-12 | 1982-10-19 | Sumitomo Electric Industries, Ltd. | Electrochromic display device |
US4463045A (en) * | 1981-03-02 | 1984-07-31 | The Procter & Gamble Company | Macroscopically expanded three-dimensional plastic web exhibiting non-glossy visible surface and cloth-like tactile impression |
DE3144151A1 (en) * | 1981-11-06 | 1983-05-19 | Robert Bosch Gmbh, 7000 Stuttgart | LCD DISPLAY DEVICE |
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US4523319A (en) * | 1983-05-10 | 1985-06-11 | Brown University | Laser tape systems |
DE3436409A1 (en) * | 1984-10-04 | 1986-04-10 | Vdo Adolf Schindling Ag, 6000 Frankfurt | LIQUID CRYSTAL DISPLAY |
US4764932A (en) * | 1985-12-13 | 1988-08-16 | Continental Laser Corporation | Ion laser having direct liquid cooling of segmented discharge tube |
JPS6315230A (en) * | 1986-07-08 | 1988-01-22 | Hitachi Maxell Ltd | Electrochromic display element |
JPS63104030A (en) * | 1986-10-22 | 1988-05-09 | Fuji Electric Co Ltd | Electrochromic display device |
US4772124A (en) * | 1987-04-24 | 1988-09-20 | Fusion Systems Corporation | Probe for a radiometer |
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GB2211190A (en) * | 1987-10-19 | 1989-06-28 | Gore & Ass | Rapid recoverable ptfe and a process for its manufacture |
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US5462705A (en) * | 1988-10-27 | 1995-10-31 | Labsphere, Inc. | Method of forming diffusely reflecting sintered fluorinated long-chain addition polymers doped with pigments for color standard use |
DE3840632A1 (en) * | 1988-12-02 | 1990-06-07 | Kempf Georg Ulrich | SPREADING DISC |
US4902423A (en) * | 1989-02-02 | 1990-02-20 | W. L. Gore & Associates, Inc. | Highly air permeable expanded polytetrafluoroethylene membranes and process for making them |
JP2814574B2 (en) * | 1989-06-15 | 1998-10-22 | 住友電気工業株式会社 | Polytetrafluoroethylene porous body and method for producing the same |
US5037618A (en) * | 1990-04-13 | 1991-08-06 | Peroxidation Systems, Inc. | Oxidation chamber |
US5116115A (en) * | 1990-05-09 | 1992-05-26 | Wyko Corporation | Method and apparatus for measuring corneal topography |
KR950006318B1 (en) * | 1990-07-16 | 1995-06-13 | 미쓰이세끼유 가가꾸고오교오 가부시끼가이샤 | Diffusion reflectror and using solid state laser apparatus the same |
EP0496323B2 (en) * | 1991-01-22 | 2002-12-11 | Toray Industries, Inc. | Reflector for a surface light source |
US5293546A (en) * | 1991-04-17 | 1994-03-08 | Martin Marietta Corporation | Oxide coated metal grid electrode structure in display devices |
US5422756A (en) * | 1992-05-18 | 1995-06-06 | Minnesota Mining And Manufacturing Company | Backlighting system using a retroreflecting polarizer |
US5241180A (en) * | 1992-08-05 | 1993-08-31 | General Electric Company | Radiation detection devices with tapered scintillator crystals |
JP2732174B2 (en) * | 1992-10-30 | 1998-03-25 | タイホー工業株式会社 | Surface light source plate |
US5488473A (en) * | 1994-03-01 | 1996-01-30 | Labsphere, Inc. | Method of and apparatus for increasing measurement sensitivity of fluorescence and luminescence |
US5596450A (en) * | 1995-01-06 | 1997-01-21 | W. L. Gore & Associates, Inc. | Light reflectant surface and method for making and using same |
-
1995
- 1995-08-29 US US08/520,633 patent/US5838406A/en not_active Expired - Lifetime
-
1996
- 1996-08-06 AU AU67670/96A patent/AU708836B2/en not_active Ceased
- 1996-08-06 EP EP96928074A patent/EP0847538A1/en not_active Withdrawn
- 1996-08-06 CA CA002229931A patent/CA2229931C/en not_active Expired - Fee Related
- 1996-08-06 JP JP51029197A patent/JP3920339B2/en not_active Expired - Lifetime
- 1996-08-06 WO PCT/US1996/012825 patent/WO1997008571A1/en not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7281834B2 (en) | 2004-01-28 | 2007-10-16 | Photoglow, Inc. | Method and apparatus for image illumination using self-contained luminaire |
Also Published As
Publication number | Publication date |
---|---|
JP3920339B2 (en) | 2007-05-30 |
US5838406A (en) | 1998-11-17 |
JPH11512192A (en) | 1999-10-19 |
EP0847538A1 (en) | 1998-06-17 |
AU708836B2 (en) | 1999-08-12 |
CA2229931C (en) | 2001-04-03 |
AU6767096A (en) | 1997-03-19 |
WO1997008571A1 (en) | 1997-03-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |