TW200710504A - Light-guide plate of backlight unit - Google Patents

Light-guide plate of backlight unit

Info

Publication number
TW200710504A
TW200710504A TW094133931A TW94133931A TW200710504A TW 200710504 A TW200710504 A TW 200710504A TW 094133931 A TW094133931 A TW 094133931A TW 94133931 A TW94133931 A TW 94133931A TW 200710504 A TW200710504 A TW 200710504A
Authority
TW
Taiwan
Prior art keywords
light
guide plate
backlight unit
focusing
lens section
Prior art date
Application number
TW094133931A
Other languages
Chinese (zh)
Other versions
TWI277806B (en
Inventor
Seong-Eun Chung
Tae-Ho Kim
Original Assignee
Taesan Lcd Co 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
Application filed by Taesan Lcd Co Ltd filed Critical Taesan Lcd Co Ltd
Publication of TW200710504A publication Critical patent/TW200710504A/en
Application granted granted Critical
Publication of TWI277806B publication Critical patent/TWI277806B/en

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
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
    • 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
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough 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
    • G02B6/0013—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
    • G02B6/003—Lens or lenticular 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
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • 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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Liquid Crystal (AREA)

Abstract

The present invention provides a light-guide plate of backlight unit. The brightness and uniformity of light is improved by forming fine structure on the top and bottom surfaces. The light-guide plate of backlight unit in the present invention is mounted behind a liquid crystal display (LCD) device for guiding the light irradiated from a light source to the LCD device. The light-guide plate is composed of a plate-like material with transparent property. The light-guide plate includes a lens section constituted by a plurality of slots on the bottom surface of the light-guide plate fro scattering the light transmitted through a side surface and focusing to a pre-determined direction; and a focusing section constituted by a plurality of polyhedron-like protrusions protruded beyond the top surface of the light-guide plate for focusing the light scattered by the lens section to an upward direction.
TW094133931A 2005-09-12 2005-09-29 Light-guide plate of backlight unit TWI277806B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020050084734A KR100736075B1 (en) 2005-09-12 2005-09-12 Light Guide Panel For LCD Back Light Unit

Publications (2)

Publication Number Publication Date
TW200710504A true TW200710504A (en) 2007-03-16
TWI277806B TWI277806B (en) 2007-04-01

Family

ID=37940856

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094133931A TWI277806B (en) 2005-09-12 2005-09-29 Light-guide plate of backlight unit

Country Status (3)

Country Link
JP (1) JP2007080800A (en)
KR (1) KR100736075B1 (en)
TW (1) TWI277806B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI457621B (en) * 2012-02-07 2014-10-21 Chi Lin Optoelectronics Co Ltd Display device, backlight module, silk screen, light guide plate and method for making a light guide plate
CN110208895A (en) * 2019-05-08 2019-09-06 苏州晶智科技有限公司 A kind of clapboard and its backlight module for backlight module

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101475045B1 (en) * 2008-10-07 2014-12-23 엘지이노텍 주식회사 Lighting Emblem Assembly with Optical Pattern
KR101872348B1 (en) 2011-06-22 2018-06-29 삼성디스플레이 주식회사 Light guide plate for backlight unit and manufacturing method thereof
KR101891167B1 (en) * 2011-08-11 2018-08-23 엘지디스플레이 주식회사 Liquid crystal display device
CN106402678A (en) * 2016-08-31 2017-02-15 深圳天珑无线科技有限公司 Light-emitting assembly and intelligent terminal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100383033B1 (en) 1999-11-13 2003-05-09 전자부품연구원 Backlight device for display
JP2004233957A (en) 2002-12-05 2004-08-19 Toyota Industries Corp Optical element, planar lighting device, and liquid crystal display device
JP2004249369A (en) * 2003-02-18 2004-09-09 Towa Corp Cutting method of workpiece and workpiece

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI457621B (en) * 2012-02-07 2014-10-21 Chi Lin Optoelectronics Co Ltd Display device, backlight module, silk screen, light guide plate and method for making a light guide plate
CN110208895A (en) * 2019-05-08 2019-09-06 苏州晶智科技有限公司 A kind of clapboard and its backlight module for backlight module

Also Published As

Publication number Publication date
KR100736075B1 (en) 2007-07-06
JP2007080800A (en) 2007-03-29
TWI277806B (en) 2007-04-01
KR20070030011A (en) 2007-03-15

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees