WO2016078129A1 - 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
WO2016078129A1
WO2016078129A1 PCT/CN2014/092610 CN2014092610W WO2016078129A1 WO 2016078129 A1 WO2016078129 A1 WO 2016078129A1 CN 2014092610 W CN2014092610 W CN 2014092610W WO 2016078129 A1 WO2016078129 A1 WO 2016078129A1
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WO
WIPO (PCT)
Prior art keywords
light guide
light
guide plate
optical film
pair
Prior art date
Application number
PCT/CN2014/092610
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 WO2016078129A1 publication Critical patent/WO2016078129A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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

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 including an integrally formed plate body and a For the retaining wall, the plate body includes a pair of oppositely disposed first sides and a second side connected between the pair of first sides, the pair of retaining walls respectively protruding from the pair of first sides, The pair of retaining walls are used for positioning an optical film disposed on the plate body, and the second side is used as a light entrance edge of the light guide plate for contacting the light source.
  • Each of the retaining walls includes at least two stoppers spaced apart from each other, and a gap is formed between the two adjacent stoppers for positioning the optical film.
  • the outer surface of the retaining wall is coated with a reflective coating.
  • the bottom surface of the notch is provided with a light-shielding double-sided tape, and the light-shielding double-sided tape is adhered between the optical film and the light guide plate.
  • the top surface of the plate body is used to carry the optical film
  • the bottom surface of the plate body is coated with a reflective coating
  • the top surface of the plate body is provided with a light homogenizing structure, so that the light guide plate is The derived light is uniform.
  • the present invention further provides a backlight module including a back plate, an optical film, and a light source, wherein the backlight module includes a light guide plate, and the light guide plate includes an integrally formed plate body and a pair of retaining walls.
  • the plate body includes a pair of oppositely disposed first sides and a second side connected between the pair of first sides, the pair of retaining walls respectively protruding from the pair of first sides, the pair of retaining walls
  • An optical film disposed on the plate body, wherein the second side is used as a light entrance edge of the light guide plate for contacting a light source, and the light guide plate is disposed on the back plate, the optical film
  • the sheet is positioned between the pair of retaining walls of the light guide plate, and the optical film is laminated with the plate body, the light source is disposed on the back plate, and the plate body is The second side is adjacent.
  • Each of the retaining walls includes at least two stoppers spaced apart from each other, and a gap is formed between the two adjacent stoppers for positioning the optical film.
  • the outer surface of the retaining wall is coated with a reflective coating.
  • the bottom surface of the notch is provided with a light-shielding double-sided tape, and the light-shielding double-sided tape is adhered between the optical film and the light guide plate.
  • the top surface of the plate body is used to carry the optical film
  • the bottom surface of the plate body is coated with a reflective coating
  • the top surface of the plate body is provided with a light homogenizing structure, so that the light guide plate is The derived light is uniform.
  • the present invention further provides a display, the display comprising a backlight module and a display panel, the backlight module comprising a back plate, an optical film, a light source and a light guide plate;
  • the light guide plate comprises an integrally formed plate And a pair of retaining walls, the plate body includes a pair of opposite first sides and a second side connected between the pair of first sides, the pair of retaining walls respectively protruding from the pair At the edge, the pair of retaining walls
  • the optical film is disposed on the plate body, the second side is used as a light entrance edge of the light guide plate for contacting a light source, and the light guide plate is disposed on the back plate; the optical film Positioned between the pair of retaining walls of the light guide plate, and the optical film is laminated with the plate body, the light source is disposed on the back plate, and the first part of the plate body
  • the two sides are adjacent to each other; the display panel is disposed on the backlight module, and the display panel and the top surface of the retaining
  • Each of the retaining walls includes at least two stoppers spaced apart from each other, and a gap is formed between the two adjacent stoppers for positioning the optical film.
  • the outer surface of the retaining wall is coated with a reflective coating.
  • the bottom surface of the notch is provided with a light-shielding double-sided tape, and the light-shielding double-sided tape is adhered between the optical film and the light guide plate.
  • the top surface of the plate body is used to carry the optical film
  • the bottom surface of the plate body is coated with a reflective coating
  • the top surface of the plate body is provided with a light homogenizing structure, so that the light guide plate is The derived light is uniform.
  • the present invention is to design the light guide plate into a structure having an integrally formed structure and a pair of retaining walls for positioning an optical film disposed on the plate body, the second side
  • the light entrance edge of the light guide plate is used to contact the light source.
  • the optical film is positioned by a retaining wall structure integrally formed on the light guide plate, so that the backlight module and the display do not require a frame, which simplifies the assembly process and reduces the cost.
  • the display has the benefit of a narrow bezel.
  • FIG. 1 is a schematic view of a light guide plate in an embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of a backlight module in an embodiment of the present invention.
  • FIG. 3 is a schematic cross-sectional view of the backlight module of FIG. 2 in another direction.
  • the present invention provides a light guide plate 100 comprising an integrally formed plate body 20 and a pair of retaining walls 40, the plate body 20 including a pair of oppositely disposed first sides 21 and Connected to the second side 22 between the pair of first sides 21, the pair of retaining walls 40 are respectively protruded from the pair of first sides 21, and the pair of retaining walls 40 are used for positioning on the board
  • the optical film 50 on the body 20 (shown in FIGS. 2 and 3) is used as a light entrance edge of the light guide plate 100 for contacting a light source (not shown).
  • the plate body 20 of the light guide plate 100 has a rectangular sheet structure, and a receiving space is formed between the plate body 20 and the retaining wall 40 for accommodating the optical film 50 (as shown in FIGS. 2 and 3).
  • the optical film 50 can be of various types of stacked arrangements such as a diffusion sheet, a prism sheet, a polarizer, and the like.
  • the present invention is designed to position the light guide plate 100 into a plate body 20 having an integrally formed structure and a pair of retaining walls 40 for positioning the optical film 50 provided on the plate body 20.
  • the second side 22 serves as a light entrance edge of the light guide plate 100 for contacting the light source.
  • the optical film 50 is positioned by the structure of the retaining wall 40 integrally formed on the light guide plate 100, so that 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 100 has the advantage of having a narrow bezel.
  • each of the retaining walls 40 includes at least two stops 42 spaced apart from each other, and a gap 44 is formed between the two adjacent blocks 42 for positioning the Optical film 50. At least two of the stops 42 of each of the retaining walls 40 are arranged on the same line.
  • the edge of the optical film 50 is provided with a positioning portion, that is, a lug that is convexly disposed at the edge of the optical film. When assembled, the positioning portion of the optical film 50 is aligned with the notch 44, and then the optical film 50 is directly placed on the light guide plate 100, so that the positioning of the optical film 50 is contrived into the notch 44, realizing the optical on the horizontal surface. Positioning of the diaphragm 50.
  • the optical film 50 is sandwiched between the display panel and the light guide plate 100 by mounting the display panel over the optical film 50 to realize the positioning of the optical film 50 in the vertical direction.
  • the gap 44 is disposed such that the optical film 50 and the light guide plate 100 can be quickly positioned during assembly.
  • the outer surface of the retaining wall 40 is coated with a reflective coating. Reflective coatings improve light utilization.
  • the bottom surface of the notch 44 is provided with a light-shielding double-sided tape (not shown), and the light-shielding double-sided tape is adhered between the optical film 50 and the light guide plate 100.
  • the light-shielding double-sided tape can not only fix the positioning of the optical film 50, so that the optical film 50 does not shift and does not leave the light guide plate 100, and the light-shielding double-sided tape can also prevent light leakage at the notch 44.
  • the top surface of the board body 20 is used to carry the optical film 50, the bottom surface of the board body 20 is coated with a reflective coating, and the top surface of the board body 20 is provided with a light homogenizing structure.
  • the light guided by the light guide plate 100 is made uniform.
  • the reflective coating can also be replaced with a reflective sheet 60, as shown in Figures 2 and 3.
  • the present invention further provides a backlight module, including a back plate 70, an optical film 50, a light source (not shown), and the light guide plate 100.
  • the light guide plate 100 is disposed at The optical film 50 is positioned between the pair of retaining walls 40 of the light guide plate 100, and the optical film 50 is stacked with the plate body 20, and the light source is disposed on the back plate 70.
  • the back plate 70 is adjacent to the second side 22 of the plate body 20.
  • the present invention also provides a display, including the backlight module and the display panel, the display panel is disposed on the backlight module, and the display panel and the retaining wall 40 of the light guide plate 100
  • the top surfaces are fixed by double-sided tape.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer 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 une plaque de guidage de lumière (100) comprenant un corps de plaque (20) et une paire de parois de retenue (40), le corps de plaque (20) et les parois de retenue (40) étant formés d'un seul tenant. Le corps de plaque (20) comprend une paire de premiers côtés (21) disposés de manière opposée et des deuxièmes côtés (22) reliés entre les premiers côtés (21). Les parois de retenue (40) sont respectivement disposées sur les premiers côtés (21) dans une position en saillie, et sont utilisés pour le positionnement d'un film optique (50) disposé sur le corps de plaque (20). Les deuxièmes côtés (22) servant de côtés d'incidence de la lumière de la plaque de guidage de lumière (100) et sont utilisés pour la mise en contact avec des sources de lumière.
PCT/CN2014/092610 2014-11-17 2014-11-29 Plaque de guidage de lumière, module de rétroéclairage et dispositif d'affichage WO2016078129A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410655673.0 2014-11-17
CN201410655673.0A CN104456426A (zh) 2014-11-17 2014-11-17 导光板、背光模组及显示器

Publications (1)

Publication Number Publication Date
WO2016078129A1 true WO2016078129A1 (fr) 2016-05-26

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PCT/CN2014/092610 WO2016078129A1 (fr) 2014-11-17 2014-11-29 Plaque de guidage de lumière, module de rétroéclairage et dispositif d'affichage

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CN (1) CN104456426A (fr)
WO (1) WO2016078129A1 (fr)

Cited By (2)

* 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
CN115951516A (zh) * 2022-12-08 2023-04-11 业成科技（成都）有限公司 背光模组及显示装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN105005111A (zh) * 2015-08-11 2015-10-28 深圳科利盟电子有限公司 导光板及应用该导光板的背光模组
CN107390434A (zh) * 2017-09-19 2017-11-24 京东方科技集团股份有限公司 背光模组及其组装方法以及显示面板
CN109413241B (zh) 2018-11-23 2020-08-11 武汉华星光电技术有限公司 移动终端
TWI695256B (zh) * 2019-03-06 2020-06-01 友達光電股份有限公司 框架結構及具框架結構的顯示裝置
CN110531460B (zh) * 2019-07-29 2024-04-30 武汉华星光电技术有限公司 背光模组及显示装置
CN212060824U (zh) * 2020-06-23 2020-12-01 京东方科技集团股份有限公司 背板、背光模组和显示装置

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CN1924665A (zh) * 2005-09-02 2007-03-07 中华映管股份有限公司 背光模块以及液晶显示模块
CN200972512Y (zh) * 2006-08-18 2007-11-07 胜华科技股份有限公司 导光板及背光模块
US20080074580A1 (en) * 2006-09-21 2008-03-27 Chih-Li Chang Liquid crystal display and backlight module
CN102498333A (zh) * 2009-09-15 2012-06-13 夏普株式会社 液晶显示装置
CN203375279U (zh) * 2013-07-24 2014-01-01 合肥京东方光电科技有限公司 定位组件、背光模组及显示装置

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JP2007220369A (ja) * 2006-02-14 2007-08-30 Seiko Instruments Inc 照明装置及びこれを備える表示装置
CN201251635Y (zh) * 2008-09-11 2009-06-03 胜华科技股份有限公司 导光装置及背光模块
CN103676233B (zh) * 2013-11-29 2016-08-17 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

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
CN1924665A (zh) * 2005-09-02 2007-03-07 中华映管股份有限公司 背光模块以及液晶显示模块
CN200972512Y (zh) * 2006-08-18 2007-11-07 胜华科技股份有限公司 导光板及背光模块
US20080074580A1 (en) * 2006-09-21 2008-03-27 Chih-Li Chang Liquid crystal display and backlight module
CN102498333A (zh) * 2009-09-15 2012-06-13 夏普株式会社 液晶显示装置
CN203375279U (zh) * 2013-07-24 2014-01-01 合肥京东方光电科技有限公司 定位组件、背光模组及显示装置

Cited By (3)

* 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
CN115951516A (zh) * 2022-12-08 2023-04-11 业成科技（成都）有限公司 背光模组及显示装置

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