EP3861382A4 - Method of fabricating light guide plate, light guide plate fabricated thereby, and illumination device having the same - Google Patents

Method of fabricating light guide plate, light guide plate fabricated thereby, and illumination device having the same Download PDF

Info

Publication number: EP3861382A4
Authority: EP; European Patent Office
Prior art keywords: light guide; guide plate; same; illumination device; fabricated
Prior art date: 2018-10-01
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP19868723.8A

Other languages

German (de)

French (fr)

Other versions

EP3861382A1 (en

Inventor

Euisoo Kim

Seong-Ryong Ryoo

Gun-Sang Yoon

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.)

Corning Inc

Original Assignee

Corning Inc

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.)

2018-10-01

Filing date

2019-09-30

Publication date

2022-04-27

2019-04-03 Priority claimed from US16/374,381 external-priority patent/US11112559B2/en

2019-09-30 Application filed by Corning Inc filed Critical Corning Inc

2021-08-11 Publication of EP3861382A1 publication Critical patent/EP3861382A1/en

2022-04-27 Publication of EP3861382A4 publication Critical patent/EP3861382A4/en

Status Withdrawn legal-status Critical Current

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
- 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
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
- 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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0031—Reflecting element, sheet or layer
- 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
- G02B6/0045—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 by shaping at least a portion of the light guide
- G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0051—Diffusing sheet or layer
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
- 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
- G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
- 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
- G02B6/0065—Manufacturing aspects; Material aspects
- 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
- G02B6/0066—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 characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/009—Positioning aspects of the light source in the package

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Optics & Photonics (AREA)
Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Microelectronics & Electronic Packaging (AREA)
Planar Illumination Modules (AREA)

EP19868723.8A 2018-10-01 2019-09-30 Method of fabricating light guide plate, light guide plate fabricated thereby, and illumination device having the same Withdrawn EP3861382A4 (en)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
KR20180116835		2018-10-01
KR1020180150797A KR20200037718A (en)	2018-10-01	2018-11-29	Method of fabricating light guide plate, light guide plate fabricated by the same and lighting device having the same
US16/374,381 US11112559B2 (en)	2018-10-01	2019-04-03	Method of fabricating light guide plate, light guide plate fabricated thereby, and illumination device having the same
PCT/US2019/053724 WO2020072336A1 (en)	2018-10-01	2019-09-30	Method of fabricating light guide plate, light guide plate fabricated thereby, and illumination device having the same

Publications (2)

Publication Number	Publication Date
EP3861382A1 EP3861382A1 (en)	2021-08-11
EP3861382A4 true EP3861382A4 (en)	2022-04-27

Family

ID=70276108

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19868723.8A Withdrawn EP3861382A4 (en)	2018-10-01	2019-09-30	Method of fabricating light guide plate, light guide plate fabricated thereby, and illumination device having the same

Country Status (6)

Country	Link
EP (1)	EP3861382A4 (en)
JP (1)	JP2022504070A (en)
KR (1)	KR20200037718A (en)
CN (1)	CN113056684A (en)
IL (1)	IL282004A (en)
TW (1)	TW202028792A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN114923154A (en) *	2022-05-26	2022-08-19	福耀玻璃工业集团股份有限公司	Optical assembly and vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH08160417A (en) *	1994-12-01	1996-06-21	Sekisui Chem Co Ltd	Surface light source device
US5600455A (en) *	1994-08-31	1997-02-04	Enplas Corporation	Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface
US20110176327A1 (en) *	2010-01-20	2011-07-21	Fujifilm Corporation	Planar lighting device and a method of producing the same
WO2013050853A2 (en) *	2011-10-04	2013-04-11	Exxelis Global Limited	Method of making a lightguide
US20140119052A1 (en) *	2012-10-31	2014-05-01	Empire Technology Development Llc	Light guide structure and illuminating device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
KR20030013423A (en) *	2000-05-19	2003-02-14	코닌클리케 필립스 일렉트로닉스 엔.브이.	Polarized light-emitting waveguide plate
TWI230300B (en) *	2003-06-25	2005-04-01	Chunghwa Picture Tubes Ltd	A method for manufacturing a diffuser of the backlight module of a flat panel display device
KR100656896B1 (en)	2004-10-28	2006-12-12	제일모직주식회사	Surface-functional Light Guiding Plates and Method for Continuous Preparation of the Same
KR101454757B1 (en) *	2012-10-29	2014-10-27	코닝정밀소재 주식회사	Light diffusing plate, method for manufacturing the same, and led illumination apparatus comprising the same
KR102482531B1 (en) *	2014-11-28	2022-12-30	서울바이오시스 주식회사	Dual side plane lighting device using uv led
US9690033B2 (en) *	2015-03-31	2017-06-27	Corning Incorporated	Waveguides comprising light scattering surfaces and display devices comprising the same
KR101891304B1 (en) *	2016-04-04	2018-08-24	희성전자 주식회사	Transparent light guide plate and transparent display apparatus having the same

2018
- 2018-11-29 KR KR1020180150797A patent/KR20200037718A/en active Search and Examination
2019
- 2019-09-30 EP EP19868723.8A patent/EP3861382A4/en not_active Withdrawn
- 2019-09-30 CN CN201980071887.4A patent/CN113056684A/en active Pending
- 2019-09-30 JP JP2021518078A patent/JP2022504070A/en not_active Abandoned
- 2019-10-01 TW TW108135416A patent/TW202028792A/en unknown
2021
- 2021-04-04 IL IL282004A patent/IL282004A/en unknown

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5600455A (en) *	1994-08-31	1997-02-04	Enplas Corporation	Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface
JPH08160417A (en) *	1994-12-01	1996-06-21	Sekisui Chem Co Ltd	Surface light source device
US20110176327A1 (en) *	2010-01-20	2011-07-21	Fujifilm Corporation	Planar lighting device and a method of producing the same
WO2013050853A2 (en) *	2011-10-04	2013-04-11	Exxelis Global Limited	Method of making a lightguide
US20140119052A1 (en) *	2012-10-31	2014-05-01	Empire Technology Development Llc	Light guide structure and illuminating device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2020072336A1 *

Also Published As

Publication number	Publication date
EP3861382A1 (en)	2021-08-11
TW202028792A (en)	2020-08-01
IL282004A (en)	2021-05-31
KR20200037718A (en)	2020-04-09
CN113056684A (en)	2021-06-29
JP2022504070A (en)	2022-01-13

Legal Events

Date	Code	Title	Description
2020-04-11	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
2021-07-09	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2021-07-09	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE
2021-08-11	17P	Request for examination filed	Effective date: 20210430
2021-08-11	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
2022-01-05	DAV	Request for validation of the european patent (deleted)
2022-01-05	DAX	Request for extension of the european patent (deleted)
2022-04-27	A4	Supplementary search report drawn up and despatched	Effective date: 20220328
2022-04-27	RIC1	Information provided on ipc code assigned before grant	Ipc: F21V 8/00 20060101ALN20220322BHEP Ipc: G02B 6/00 20060101ALI20220322BHEP Ipc: G02B 5/02 20060101AFI20220322BHEP
2023-05-12	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN
2023-06-14	18W	Application withdrawn	Effective date: 20230509

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