[go: up one dir, main page]

WO2018145325A1 - Ensemble de rétroéclairage et module à cristaux liquides - Google Patents

Ensemble de rétroéclairage et module à cristaux liquides Download PDF

Info

Publication number
WO2018145325A1
WO2018145325A1 PCT/CN2017/073676 CN2017073676W WO2018145325A1 WO 2018145325 A1 WO2018145325 A1 WO 2018145325A1 CN 2017073676 W CN2017073676 W CN 2017073676W WO 2018145325 A1 WO2018145325 A1 WO 2018145325A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
guide plate
light guide
disposed
light bar
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.)
Ceased
Application number
PCT/CN2017/073676
Other languages
English (en)
Chinese (zh)
Inventor
阙成文
丘永元
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.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology 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 Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Publication of WO2018145325A1 publication Critical patent/WO2018145325A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • G02F1/133605—Direct backlight including specially adapted reflectors

Definitions

  • the invention relates to a liquid crystal panel module technology, in particular to a backlight assembly and a liquid crystal display module.
  • the backlight of the common liquid crystal display module is mainly divided into two types: the light-input type and the direct-type type.
  • the side-input type backlight module has an advantage in thickness, which is advantageous for thinning the product, but the brightness of the side away from the light source will be Lower than the side close to the light source, resulting in uneven brightness distribution; while the direct-lit backlight is more conducive to the partition control of the display, to obtain a better display, but how to achieve a better display while still achieving the traditional
  • the thickness advantage of the side-lit backlight assembly has become an urgent problem to be solved.
  • the present invention provides a backlight assembly and a liquid crystal display module, thereby enabling the multi-partition control of the side-entry backlight, thereby reducing the problem of uneven thickness and uneven brightness distribution.
  • the present invention provides a backlight assembly including an optical module disposed on a backplane, the optical module including a light bar, a light guide plate, and a reflective sheet disposed at a lower end of the light guide plate, the optical module being provided with at least two groups, each The optical module further includes a first base that carries a light guide plate and a reflection sheet of the adjacent optical module, and the light bar is disposed on a side of the first base opposite to the side of the light guide plate, and is provided on the first base.
  • An inclined portion extending obliquely in the direction of the light plate, wherein the upper end surface of the inclined portion is a sloped surface, and a reflective layer for reflecting light emitted from the light bar of the adjacent optical module is disposed on the inclined surface, and the optical module is covered with the optical In the diaphragm group, the reflective surface of the reflective layer faces the optical film group.
  • the inclined portion is provided with an extending portion horizontally extending toward the upper end surface of the light guide plate, and the extending portion forms a pressing portion, and the pressing portion is pressed on a side of the light guiding plate opposite to the light bar.
  • the inclined portion is sequentially increased from the first base toward the height of the light guide plate.
  • the first base is L-shaped, including a lateral portion and a vertical portion disposed perpendicular to the lateral portion, and a light guide plate carrying the adjacent set of optical modules and the reflective sheet are formed between the lateral portion and the vertical portion
  • the first carrying portion on one side of the light bar forms a second carrying portion for fixing the light bar on a side of the vertical portion opposite to the light bar, and the inclined portion is provided on the vertical portion.
  • a second base is disposed at a lower end of the light guide plate of each group of optical modules opposite to the light bar.
  • the vertical portion is provided with a groove on a side opposite to a side of the light guide plate of the adjacent optical module from the side of the light bar, the groove is parallel to the light bar, and the filler is provided in the groove .
  • the optical film set includes a light transmissive plate disposed above the optical module and at least one optical film attached to the light transmissive plate.
  • the light transmissive plate is a diffusion plate.
  • the present invention also provides a liquid crystal display panel comprising a display panel, and further comprising the backlight assembly.
  • the present invention realizes the partition control of the backlight by providing at least two sets of side-entry optical modules, and can obtain a better display picture; and the backlight assembly is used because of the side-entry backlight structure.
  • the thickness is reduced, and a reflective layer is disposed on each group of optical modules, thereby performing brightness compensation on the splicing portions of the two optical modules, which not only solves the problem of uneven brightness distribution, but also solves the problem of darkness at the splicing place.
  • FIG. 1 is a schematic structural view of a backlight assembly of the present invention.
  • a backlight assembly of the present invention includes at least two sets of optical modules 2 disposed on the backplane 1 .
  • Each set of optical modules 2 includes a light bar 3 , a light guide plate 4 , and is disposed at a lower end of the light guide plate 4 .
  • a reflective sheet 5 a first base 6 carrying the light guide plate 4 of the adjacent optical module 2 and the reflective sheet 5, and the light strip 3 is disposed on the opposite side of the first base 6 from the side of the light guide plate 4,
  • the base 6 is provided with an inclined portion 61 extending obliquely in the direction of the light guide plate 4.
  • the upper end surface of the inclined portion 61 is a sloped surface on which the light bar 3 of the adjacent optical module 2 is disposed.
  • the light reflecting reflective layer 62, the reflective layer 62 is made of a material that can reflect the light source, and is not specifically limited herein; the present invention adopts a modular optical module 2,
  • the side-lit backlight assembly can have the partition control function of the direct-type backlight assembly, so that the liquid crystal display module adopting the invention can obtain the same display screen as the liquid crystal display module using the direct-lit backlight assembly, and solves the direct-type backlight assembly.
  • the thickness problem is a material that can reflect the light source, and is not specifically limited herein; the present invention adopts a modular optical module 2
  • the side-lit backlight assembly can have the partition control function of the direct-type backlight assembly, so that the liquid crystal display module adopting the invention can obtain the same display screen as the liquid crystal display module using the direct-lit backlight assembly, and solves the direct-type backlight assembly.
  • the optical module 2 is covered with an optical film set 7 comprising a light transmissive plate 71 disposed above the optical module 2 and at least one optical film 72 attached to the light transmissive plate 7,
  • the light transmissive plate 71 is a diffusing plate, the reflecting surface of the reflecting layer 62 faces the optical film group 7, and the diffusing plate 71 is disposed between the lower end of the optical film group 7 and the optical module 2.
  • all the optical modules 2 share the same
  • An optical film group 7 covering the optical module 2 reflects the light emitted from the adjacent optical module 2 through the reflective layer 62 to the splicing portion of the two optical modules 2 for brightness compensation, thereby solving the darkness of the splicing portion. problem.
  • an extension portion horizontally extending toward the upper end surface of the light guide plate 4 is provided on the inclined portion 61, and the extension portion forms a nip portion 63, and the nip portion 63 is pressed against
  • the nip portion 63 can also obtain a stable and precise positional relationship between the light guide plate 4 and the light bar 3, thereby obtaining a good optical coupling relationship.
  • the inclined portion 61 is sequentially increased in height from the first base 6 toward the light guide plate 4.
  • the first base 6 of the present invention can be realized by a structure in which the first base 6 is L-shaped, including a lateral portion 64 and a vertical portion 65 disposed perpendicularly to the lateral portion 64, and the lateral portion 64 and the vertical portion 65 Forming a light guide plate 4 carrying an adjacent group of optical modules 2 and a first bearing portion 66 on the side of the light strip 3 away from the light strip 3, and forming a light strip on the vertical portion 65 opposite to the light strip 3
  • the second carrying portion 67 of the third lamp holder 3 is attached and fixed to the second carrying portion 67, and the inclined portion 61 is provided on the vertical portion 65.
  • a second base 8 may be disposed at a lower end of the light guide plate 3 of each of the optical modules 2 opposite to the light bar 2, thereby solving the balance problem of the light guide plate 4, but in order to achieve a better modularization problem, the first The lateral portion 64 of a base 6 extends to the light bar 2, thereby eliminating the need to assemble the second base 8.
  • a groove 68 is provided on a side of the vertical portion 65 opposite to the side of the light guide plate 4 of the adjacent optical module 2 that is away from the light bar 3, and the groove 68 is parallel to the light bar 3, and is in the groove 68.
  • a filler 69 is provided to prevent the light guide plate 4 from being in hard contact with the first base 6.
  • the optical module 2 of the present invention is provided with two groups, respectively a first optical module and a second optical module; when assembling, the first optical module is first A base 6, a second base 8, and a first base 6 of the second optical module are placed on the backboard 1, and the light bar 3 of the first optical module is fixed on the second carrying portion 67, and then the first optical is sequentially placed.
  • the reflection sheet 5 of the module and the light guide plate 4 are inserted into the nip portion 63 of the first optical module near the side of the light guide plate 4, so that the light guide plate 4 is adjacent to the side of the light bar 3 and the lamp.
  • the light-emitting strips of the strips 3 are oppositely fixed, and the reflective sheet 5 of the first optical module and the light guide plate 4 are fixed by the nip portion 63 of the first optical module. At this time, the light guide plate 4 and the emission sheet 5 of the first optical module are away from each other.
  • One side of the light bar 3 is placed on the first carrier portion 66 of the first base 6 in the second optical module, and assembly is continued in this manner, thereby completing the mounting of all the optical modules.
  • the present invention also discloses a liquid crystal display module, including a display panel 9 and the above backlight assembly.
  • the thickness of the light guide plate 4, the distribution of the dots of the light guide plate 4, the separation distance of the splicing place, and the height of the optical film group from the light guide plate 4 can be adjusted.
  • the brightness uniformity effect can reach 88. More than %, to meet the needs of TV design.

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)
  • Planar Illumination Modules (AREA)

Abstract

L'invention concerne également un ensemble de rétroéclairage et un panneau d'affichage à cristaux liquides comprenant un panneau d'affichage (9) et l'ensemble de rétroéclairage. L'ensemble de rétroéclairage comprend des modules optiques (2) disposés sur une plaque arrière (1); chaque module optique (2) comprend une barre de lumière (3), une plaque de guidage de lumière (4), et une plaque de réflecteur (5) disposée à l'extrémité inférieure de la plaque de guidage de lumière (4); au moins deux ensembles de modules optiques (2); chaque ensemble de modules optiques (2) comprend en outre une première base (6) portant la plaque de guidage de lumière (4) et la plaque de réflecteur (5) d'un ensemble adjacent de modules optiques (2); la barre de lumière (3) est disposée sur le côté de la première base (6) opposée à un bord latéral de la plaque de guidage de lumière (4); la première base (6) est pourvue d'une partie inclinée (61) s'étendant obliquement vers la plaque de guidage de lumière (4); la face d'extrémité supérieure de la partie inclinée (61) est une surface inclinée, une couche réfléchissante (62) utilisée pour réfléchir la lumière émise par les barres de lumière (2) de l'ensemble adjacent de modules optiques (2) est disposée sur la surface inclinée; chaque module optique (2) est recouverte d'un ensemble de films optiques (7); et la surface réfléchissante de la couche réfléchissante (62) est tournée vers l'ensemble de films optiques (7). Par comparaison avec l'état de la technique, une commande de partition d'une source de rétroéclairage est obtenue, l'épaisseur est réduite, et le problème de faible luminosité au niveau de l'épissure est également résolu.
PCT/CN2017/073676 2017-02-07 2017-02-15 Ensemble de rétroéclairage et module à cristaux liquides Ceased WO2018145325A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710067953.3A CN106873240B (zh) 2017-02-07 2017-02-07 背光组件及液晶显示模组
CN201710067953.3 2017-02-07

Publications (1)

Publication Number Publication Date
WO2018145325A1 true WO2018145325A1 (fr) 2018-08-16

Family

ID=59165821

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/073676 Ceased WO2018145325A1 (fr) 2017-02-07 2017-02-15 Ensemble de rétroéclairage et module à cristaux liquides

Country Status (2)

Country Link
CN (1) CN106873240B (fr)
WO (1) WO2018145325A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107145034B (zh) * 2017-06-23 2020-11-27 武汉华星光电技术有限公司 一种半色调掩膜板
CN113990211B (zh) * 2021-11-15 2022-11-01 Tcl华星光电技术有限公司 显示屏及显示装置
CN115373065A (zh) * 2022-08-24 2022-11-22 业成科技（成都）有限公司 侧入光式背光模组

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001093321A (ja) * 1999-09-22 2001-04-06 Hitachi Ltd 照明装置、及びこれを用いた表示装置
US20070091641A1 (en) * 2005-10-20 2007-04-26 Industrial Technology Research Institute Backlight structure
CN102081187A (zh) * 2010-11-30 2011-06-01 深圳市华星光电技术有限公司 拼接式导光板构造及背光模块
CN202216081U (zh) * 2011-07-29 2012-05-09 北京京东方光电科技有限公司 一种局部调光的背光源及液晶显示模组
CN104834049A (zh) * 2015-05-15 2015-08-12 深圳市华星光电技术有限公司 背光模组及液晶显示装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102132083A (zh) * 2008-09-30 2011-07-20 夏普株式会社 照明装置和液晶显示装置
KR20110014869A (ko) * 2009-08-06 2011-02-14 엘지전자 주식회사 백라이트 유닛 및 그를 이용한 디스플레이 장치
KR101684478B1 (ko) * 2010-01-20 2016-12-09 삼성디스플레이 주식회사 복수의 도광판을 갖는 백라이트 어셈블리

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001093321A (ja) * 1999-09-22 2001-04-06 Hitachi Ltd 照明装置、及びこれを用いた表示装置
US20070091641A1 (en) * 2005-10-20 2007-04-26 Industrial Technology Research Institute Backlight structure
CN102081187A (zh) * 2010-11-30 2011-06-01 深圳市华星光电技术有限公司 拼接式导光板构造及背光模块
CN202216081U (zh) * 2011-07-29 2012-05-09 北京京东方光电科技有限公司 一种局部调光的背光源及液晶显示模组
CN104834049A (zh) * 2015-05-15 2015-08-12 深圳市华星光电技术有限公司 背光模组及液晶显示装置

Also Published As

Publication number Publication date
CN106873240A (zh) 2017-06-20
CN106873240B (zh) 2020-05-19

Similar Documents

Publication Publication Date Title
KR101807442B1 (ko) 백라이트 모듈 및 상기 백라이트 모듈을 이용한 액정 디스플레이 장치
KR101777535B1 (ko) 광학필름 조립체의 설치구조
CN209946590U (zh) 显示装置、背光模组及拼接屏
CN103234160B (zh) 具遮光模块的背光模块以及使用此背光模块的显示装置
WO2012126199A1 (fr) Module de rétroéclairage et dispositif d'affichage à cristaux liquides
WO2014015541A1 (fr) Module de rétroéclairage
CN102865527B (zh) 背光模组
WO2020082479A1 (fr) Module de rétroéclairage et dispositif d'affichage associé
WO2013177817A1 (fr) Module de rétroéclairage
CN205028005U (zh) 一种侧入式背光模组及显示装置
CN102927524A (zh) 混光件、导光板、背光模组及显示装置
KR20140148272A (ko) 발광다이오드 팩키지 및 이를 포함한 액정표시장치
CN104180241A (zh) 背光模块
WO2011102033A1 (fr) Dispositif de source lumineuse de surface et dispositif d'affichage à cristaux liquides équipé de celui-ci
WO2013181865A1 (fr) Module de rétroéclairage à éclairage par la tranche
WO2013149412A1 (fr) Module de rétroéclairage à cadre de bord étroit
KR101777528B1 (ko) 백라이트 모듈 및 백라이트 모듈을 사용하는 액정 디스플레이 장치
WO2020087651A1 (fr) Module de rétroéclairage et dispositif d'affichage
WO2018145325A1 (fr) Ensemble de rétroéclairage et module à cristaux liquides
WO2013177805A1 (fr) Module de rétroéclairage
JP2010108601A (ja) 面状光源及び液晶表示装置
JP2013114947A (ja) 面光源装置
WO2016197394A1 (fr) Module de rétro-éclairage et dispositif d'affichage à cristaux liquides
CN116149097A (zh) 背光模组和显示装置
TW202109160A (zh) 背光模組及具有背光模組之顯示裝置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17895786

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17895786

Country of ref document: EP

Kind code of ref document: A1