WO2016078118A1 - Plaque de guidage de lumière, module de rétroéclairage et dispositif d'affichage - Google Patents

Plaque de guidage de lumière, module de rétroéclairage et dispositif d'affichage Download PDF

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Publication number
WO2016078118A1
WO2016078118A1 PCT/CN2014/092590 CN2014092590W WO2016078118A1 WO 2016078118 A1 WO2016078118 A1 WO 2016078118A1 CN 2014092590 W CN2014092590 W CN 2014092590W WO 2016078118 A1 WO2016078118 A1 WO 2016078118A1
Authority
WO
WIPO (PCT)
Prior art keywords
light guide
guide plate
plate
backlight module
optical film
Prior art date
Application number
PCT/CN2014/092590
Other languages
English (en)
Chinese (zh)
Inventor
周革革
Original Assignee
深圳市华星光电技术有限公司
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 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Publication of WO2016078118A1 publication Critical patent/WO2016078118A1/fr

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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
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a light guide plate, a backlight module, and a display.
  • a liquid crystal display device has been widely used as a display component of an electronic device in various electronic products.
  • the frame of the electronic device is designed to be narrower and narrower.
  • the backlight module is an important component in the liquid crystal display device, and the frame of the backlight module is also required to be narrower and narrower.
  • the backlight module of the prior art includes a plastic frame, and the light guide plate is surrounded by the plastic frame.
  • the light source flexible circuit board is fixed on the light guide plate and the plastic frame by the light shielding tape, and the optical film is also fixed by the double-sided tape.
  • the plastic frame can be seen as a carrier for carrying the light guide plate, the light source flexible circuit board and the optical film, and is an important component of the backlight module.
  • the thickness of the plastic frame is thinner and thinner, the molding is difficult, and it is easily damaged during assembly.
  • the technical problem to be solved by the present invention is to provide a light guide plate, a backlight module and a display, so that the backlight module and the display have a narrow bezel and have the advantage of being easy to assemble.
  • the present invention provides a light guide plate for use in a backlight module, the light guide plate including a plate body and two oppositely disposed retaining walls, the plate body including two oppositely disposed first sides and a connection The two first sides between the two first sides, the two first sides are non-incident light edges of the light guide plate;
  • each of the retaining walls is an elongated block.
  • the outer surface of the retaining wall is coated with a reflective coating.
  • the surface of the plate body including the first side and the second side is provided with a light homogenizing structure such that the light guided by the light guide plate is uniform, and the other surface opposite to the surface is coated with a reflective coating.
  • each of the retaining walls includes at least two spacers disposed at equal intervals in a straight line, and a gap is formed between two adjacent ones of the stops.
  • the invention also provides a backlight module, comprising a back plate and an optical film
  • the backlight module comprises a light guide plate
  • the light guide plate comprises a plate body and two opposite retaining walls
  • the plate body comprises two opposite a first side and a second side connected between the two first sides, wherein the two first sides are non-incident light edges of the light guide plate;
  • the two retaining walls are respectively protruded from The two first side positions
  • the retaining wall includes a supporting step and an abutting step opposite to the supporting step, the supporting step is disposed on a surface of the retaining wall facing the light guide plate, and the resisting step is provided by the
  • the barrier wall extends toward one side of the light guide plate, the light guide plate is disposed on the back plate, the optical film is positioned between the pair of retaining walls of the light guide plate, and the optical film and the optical film are
  • the plate body is stacked; the abutting step is clamped on the edge of the back plate to position the light guide plate
  • each of the retaining walls includes at least two spaced apart stops on the same straight line, and a gap is formed between two adjacent ones of the stops, and the edge of the optical film is corresponding to the notch. a clamping piece, the caliper piece being held in the notch.
  • the backlight module further includes a double-sided tape, and the double-sided tape is adhered to the surface of the retaining wall away from the plate body and the caliper piece.
  • the retaining wall is a strip-shaped block
  • the backing plate includes a bottom plate and a side plate disposed on the bottom plate, and the abutting step abuts the end portion of the side plate away from the bottom plate.
  • the present invention also provides a display, the display includes a backlight module and a liquid crystal panel, the backlight module includes a back plate and an optical film, the backlight module includes a light guide plate, and the light guide plate includes a plate body and two The opposite retaining wall, the plate body comprises two opposite first sides and two second sides connected between the two first sides, the two first sides being non-light guide plates An incident light edge; the two retaining walls are respectively protruded from the two first side positions, and the retaining wall includes a supporting step and an abutting step opposite to the supporting step, wherein the supporting step is set in the block
  • the wall faces the surface of the light guide plate, the resisting step extends from the side of the barrier wall toward the light guide plate, the light guide plate is disposed on the back plate, and the optical film is positioned on the light guide plate Between the retaining walls and the optical film and the plate body are stacked; the abutting step is clamped on the edge of the back plate to position the light guide plate on the back plate; the
  • the present invention also provides a display, the display includes a backlight module and a liquid crystal panel, the backlight module includes a back plate and an optical film, the backlight module includes a light guide plate, and the light guide plate includes a plate body and two The opposite retaining wall, the plate body comprises two opposite first sides and two second sides connected between the two first sides, the two first sides being non-light guide plates An incident light edge; the two retaining walls are respectively protruded from the two first side positions, and the retaining wall includes a supporting step and an abutting step opposite to the supporting step, wherein the supporting step is set in the block
  • the wall faces the surface of the light guide plate, the resisting step extends from the side of the barrier wall toward the light guide plate, the light guide plate is disposed on the back plate, and the optical film is positioned on the light guide plate Between the retaining walls and the optical film and the plate body are stacked; the abutting step is clamped on the edge of the back plate to position the light guide plate on the back plate; the
  • the invention also provides a display comprising a backlight module and a liquid crystal panel, the back
  • the light module comprises a back plate and an optical film
  • the backlight module comprises a light guide plate
  • the light guide plate comprises a plate body and two opposite retaining walls
  • the plate body comprises two opposite first sides and a connection
  • the two first sides between the two first sides are the non-incident light edges of the light guide plate
  • the two barrier walls are respectively protruded from the two first sides a position
  • the retaining wall includes a supporting step and an abutting step opposite to the supporting step, the supporting step is disposed on a surface of the retaining wall facing the light guide plate, and the resisting step is backed by the retaining wall a side extending
  • the light guide plate is disposed on the back plate
  • the optical film is positioned between the pair of retaining walls of the light guide plate
  • the optical film is laminated with the plate body
  • the resisting step is fixed on the edge of the backing plate to position the light guiding
  • the liquid crystal panel and the support step of the retaining wall are fixed by a double-sided tape, and the second side is used as a light-increasing edge of the light guide plate for contacting the light source, wherein the backlight module further comprises a double-sided tape
  • the double-sided tape is adhered to the surface of the retaining wall away from the plate body and the optical film.
  • the present invention also provides a display, the display includes a backlight module and a liquid crystal panel, the backlight module includes a back plate and an optical film, the backlight module includes a light guide plate, and the light guide plate includes a plate body and two The opposite retaining wall, the plate body comprises two opposite first sides and two second sides connected between the two first sides, the two first sides being non-light guide plates An incident light edge; the two retaining walls are respectively protruded from the two first side positions, and the retaining wall includes a supporting step and an abutting step opposite to the supporting step, wherein the supporting step is set in the block
  • the wall faces the surface of the light guide plate, the resisting step extends from the side of the barrier wall toward the light guide plate, the light guide plate is disposed on the back plate, and the optical film is positioned on the light guide plate Between the retaining walls and the optical film and the plate body are stacked; the abutting step is clamped on the edge of the back plate to position the light guide plate on the back plate; the
  • the invention designs the light guide plate into a structure with an integrally formed structure and two retaining walls, and positions the liquid crystal panel, the light guide plate and the back plate through a retaining wall structure integrally formed on the light guide plate.
  • the backlight module and the display do not require a frame, which simplifies the assembly process and reduces the cost.
  • the display using the light guide plate has the advantage of having a narrow bezel.
  • FIG. 1 is a schematic structural view of a light guide plate in a preferred embodiment of the present invention.
  • FIG. 2 is a schematic structural view of a light guide plate in another embodiment of the present invention.
  • FIG. 3 is a schematic cross-sectional view of the backlight module shown in FIG. 1.
  • a preferred embodiment of the present invention provides a light guide plate 100 for positioning a backlight module of the display and a liquid crystal panel.
  • the light guide plate 100 includes a plate body 20 and two oppositely disposed retaining walls. 40.
  • the plate body 20 includes two opposite first sides 21 and two second sides 22 connected between the two first sides 21.
  • the two first sides 21 are non-incident light edges of the light guide plate 100;
  • the two retaining walls 40 are respectively disposed at the positions of the two first sides 21 and are located in the same plane, and the retaining wall 40 includes a support.
  • the step 41 and the abutting step 43 opposite to the support step 41.
  • the supporting step 41 is disposed on a side of the retaining wall 40 facing the board body 20, and the resisting step 43 extends from a side of the retaining wall 40 facing away from the board body 20, and the supporting step 41 is used for supporting and positioning
  • the liquid crystal panel is mounted on the backlight module.
  • the resisting step 43 is used to position the light guide plate 100 on the back plate of the backlight module, and the second side 22 serves as the light entering the light guide plate 100. The edge is used to contact the light source.
  • the plate body 20 of the light guide plate 100 has a rectangular sheet-like structure and is integrally formed.
  • the plate body 20 and the retaining wall 40 form a receiving space for accommodating the optical film 70 (as shown in FIG. 2).
  • the diaphragm 70 may be provided in various types of stacked layers such as a diffusion sheet, a prism sheet, a polarizer, and the like.
  • the surface of the plate body 20 including the first side 21 and the second side 22 is provided with a light homogenizing structure, so that the light emitted by the light guide plate 100 is uniform, and the other surface opposite to the surface is coated with reflection. coating.
  • the outer surface of the retaining wall 40 is coated with a reflective coating. Reflective coatings improve light utilization.
  • the reflective coating can also be replaced by a reflective sheet 30.
  • the retaining wall 40 is an elongated block and the retaining wall is provided with a surface 401 away from the edge of the plate body 20.
  • the support step 41 is disposed on a side of the retaining wall 40 facing the plate body 20, and the stepped surface of the support step 41 is cut toward the surface 401 in the same direction as the surface 401.
  • the abutting step 43 is provided on a side opposite to the support step 41 and the step surface faces the plate body direction.
  • each of the retaining walls 50 is evenly divided into at least two blocks 52 interposed in a mutually spaced apart manner.
  • the notch 54 is located between the adjacent two of the stops 52.
  • the notch 54 is used to position the optical film of the backlight module.
  • Each of the stoppers 52 is provided with a supporting step 55 and a resisting step 56.
  • the bottom surface of the notch 54 is provided with a light-shielding double-sided tape (not shown), and the light-shielding double-sided tape is adhered between the optical film and the support step 41 of the light guide plate 100.
  • the double-sided tape is a light-shielding double-sided tape, and the double-sided tape can not only strengthen the positioning of the optical film, so that the optical film does not leave the light guide plate 100, and the light-shielding double-sided tape can also prevent light leakage at the notch 54.
  • the present invention further provides a backlight module, including a back plate 60, an optical film 70, a light source (not shown), and the light guide plate 100 of the first embodiment.
  • the light guide plate 100 is disposed on The optical film 70 is positioned between the pair of retaining walls 40 of the light guide plate 100, and the optical film 70 is stacked with the plate body 20, and the resisting a step 43 is clamped on the edge of the back plate 60 to position the light guide plate 100 with the back plate 60; the support step 41 is in the same plane as the optical film 70, and the support step 41 is used for
  • the optical film 70 and the liquid crystal panel 80 mounted on the backlight module are positioned, and the second side 44 serves as a light entrance edge of the light guide plate 100 for contacting the light source.
  • the light source is disposed on the back plate 60 and adjacent to the second side 22 of the plate body 20.
  • the back plate 60 includes a bottom plate 61 and a side plate 62 , and the abutting step 43 abuts the end portion of the side plate 62 away from the bottom plate 61 .
  • the backlight module further includes a double-sided tape 80, and the double-sided tape 80 is adhered The surface of the retaining wall 40 is away from the surface of the plate body 20 and the optical film 70.
  • the present invention also provides a display including the backlight module and the liquid crystal panel 90.
  • the liquid crystal panel 90 is disposed on the backlight module, and the positioning liquid crystal panel 90 is supported by the support step 41, and the The liquid crystal panel 90 and the support step 41 of the retaining wall 40 are fixed by a double-sided tape 80.
  • the liquid crystal panel and the light guide plate 100 are positioned by the structure of the retaining wall 40 integrally formed on the light guide plate 100.
  • the backboard 60 eliminates the need for a bezel for the backlight module and the display, which simplifies the assembly process and reduces costs.
  • the display using the light guide plate has the advantage of having a narrow bezel.
  • the edge of the optical film 70 of the backlight module is provided with a holding piece corresponding to the notch 54 (not shown).
  • the caliper piece is held in the notch 54.
  • the holding piece of the optical film 70 is aligned with the notch 54, and then the optical film 70 is directly placed on the light guiding plate 100, so that the holding piece of the optical film 70 falls into the notch 54, achieving the horizontal plane.
  • the holding piece and the stopper 52 on both sides of the notch 54 are pasted by double-sided tape.
  • the support step 55 supports positioning of the liquid crystal panel 90 such that the optical film 70 is interposed between the liquid crystal panel 90 and the light guide plate 100 and fixed by the double-sided tape 80, so that During the assembly process, the optical film 70, the liquid crystal panel 90, and the light guide plate 100 can be quickly positioned.

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

Abstract

L'invention porte sur une plaque (100) de guidage de lumière, un module de rétroéclairage et un dispositif d'affichage. La plaque (100) de guidage de lumière est utilisée dans le module de rétroéclairage et comprend un corps (20) de plaque et deux parois (40) de retenue agencées en regard l'une de l'autre. Le corps de plaque (20) comprend deux premiers côtés (21) agencés en regard l'un de l'autre, et deux seconds côtés (22) reliés entre les deux premiers côtés (21), les deux premiers côtés (21) étant les côtés sans incidence de lumière de la plaque (100) de guidage de lumière. Les deux parois (40) de retenue sont placées respectivement sur les deux premiers côtés (21) de façon à faire saillie. Chaque paroi (40) de retenue comprend un gradin de support (41) et un gradin de butée (43), dans le sens inverse du gradin de support (41). Le gradin de support (41) placé du côté de la paroi (40) de retenue faisant face au corps (20) de plaque. Le côté de la paroi (40) de retenue opposé au corps (20) de plaque s'étend de manière à former le gradin de butée (43). Le gradin de support (41) sert à supporter et à positionner un panneau à cristaux liquides installé sur le module de rétroéclairage. Le gradin de butée (43) sert à positionner la plaque (100) de guidage de lumière et une plaque arrière (80) du module de rétroéclairage. Les seconds côtés (22) servent de côtés d'incidence de lumière de la plaque (100) de guidage de lumière qui entrent en contact avec une source lumineuse.
PCT/CN2014/092590 2014-11-17 2014-11-29 Plaque de guidage de lumière, module de rétroéclairage et dispositif d'affichage WO2016078118A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410654551.XA CN104375323B (zh) 2014-11-17 2014-11-17 导光板、背光模组及显示器
CN201410654551.X 2014-11-17

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Publication Number Publication Date
WO2016078118A1 true WO2016078118A1 (fr) 2016-05-26

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CN (1) CN104375323B (fr)
WO (1) WO2016078118A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115145071A (zh) * 2021-03-30 2022-10-04 京东方科技集团股份有限公司 显示模组以及显示装置

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CN204403956U (zh) * 2015-02-15 2015-06-17 北京京东方茶谷电子有限公司 一种背光模组及显示装置
CN104819440B (zh) * 2015-05-07 2017-12-05 武汉华星光电技术有限公司 导光板及其制作方法、背光模组
CN105090892A (zh) * 2015-07-22 2015-11-25 武汉华星光电技术有限公司 导光元件及背光模组
CN105301821B (zh) * 2015-11-11 2019-02-26 深圳市华星光电技术有限公司 液晶显示装置
CN105719569B (zh) * 2016-04-11 2019-08-06 青岛海信电器股份有限公司 一种显示装置
US10459155B2 (en) 2016-06-28 2019-10-29 Radiant Opto-Electronics (Suzhou) Co., Ltd. Backlight module and display device having the same
CN107543068B (zh) * 2016-06-28 2019-10-15 瑞仪光电(苏州)有限公司 背光模块
CN107167940A (zh) * 2017-07-14 2017-09-15 宁波维真显示科技股份有限公司 液晶显示模组及其贴合方法
CN110568665B (zh) * 2018-12-05 2023-03-21 友达光电股份有限公司 显示装置
CN110709741B (zh) 2019-09-04 2021-11-23 京东方科技集团股份有限公司 导光板、显示模组及显示装置
CN115390309A (zh) * 2021-05-24 2022-11-25 合肥鑫晟光电科技有限公司 背光模组、显示面板、显示装置

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CN103676233A (zh) * 2013-11-29 2014-03-26 业成光电（深圳）有限公司 液晶显示装置与使用该液晶显示装置的触控显示装置

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US6055029A (en) * 1996-07-23 2000-04-25 Stanley Electric Co., Ltd. Backlighting system for a liquid crystal display including an integrally molded light guiding plate and frame with a deformation absorbing means
CN101930094A (zh) * 2009-06-24 2010-12-29 乐金显示有限公司 液晶显示设备
CN202204951U (zh) * 2011-09-09 2012-04-25 北京京东方光电科技有限公司 一种导光板、背光源及液晶显示装置
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CN103676233A (zh) * 2013-11-29 2014-03-26 业成光电（深圳）有限公司 液晶显示装置与使用该液晶显示装置的触控显示装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115145071A (zh) * 2021-03-30 2022-10-04 京东方科技集团股份有限公司 显示模组以及显示装置
CN115145071B (zh) * 2021-03-30 2023-11-07 京东方科技集团股份有限公司 显示模组以及显示装置

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CN104375323B (zh) 2017-09-22

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