WO2020093900A1 - Module d'affichage et dispositif d'affichage - Google Patents

Module d'affichage et dispositif d'affichage Download PDF

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Publication number
WO2020093900A1
WO2020093900A1 PCT/CN2019/113702 CN2019113702W WO2020093900A1 WO 2020093900 A1 WO2020093900 A1 WO 2020093900A1 CN 2019113702 W CN2019113702 W CN 2019113702W WO 2020093900 A1 WO2020093900 A1 WO 2020093900A1
Authority
WO
WIPO (PCT)
Prior art keywords
display module
light
guide plate
light guide
display
Prior art date
Application number
PCT/CN2019/113702
Other languages
English (en)
Chinese (zh)
Inventor
罗晓
Original Assignee
深圳Tcl新技术有限公司
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Tcl新技术有限公司 filed Critical 深圳Tcl新技术有限公司
Publication of WO2020093900A1 publication Critical patent/WO2020093900A1/fr

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133308Support structures for LCD panels, e.g. frames or bezels
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0081Mechanical 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
    • G02B6/0086Positioning aspects
    • G02B6/0088Positioning aspects of the light guide or other optical sheets in the package
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means 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
    • G02B6/0051Diffusing sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means 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
    • G02B6/0053Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/005Means 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
    • G02B6/0055Reflecting element, sheet or layer
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011Light 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
    • G02B6/0081Mechanical 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
    • G02B6/0086Positioning aspects
    • G02B6/0091Positioning aspects of the light source relative to the light guide
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133615Edge-illuminating devices, i.e. illuminating from the side

Definitions

  • the present application relates to the field of display technology, in particular to a display module and a display device using the display module.
  • the traditional liquid crystal display is mainly composed of a liquid crystal panel, a backlight module, a housing and a circuit board.
  • the main parts of the backlight module are an optical film, a light guide plate, a light source, a reflection sheet and a back plate.
  • the function of the reflection sheet is mainly to prevent the light emitted by the light source from being exposed from the back of the backlight module, and to reflect the light source so that it can focus and project toward the liquid crystal panel, thereby improving the utilization rate of the light source.
  • the backlight module can be divided into two types of side entry type and direct type according to the setting of the light entrance surface. In order to improve the utilization rate of the light source, the side entry type backlight module usually needs to be provided with a reflective sheet on the opposite side , Resulting in a complex structure and inconvenient processing.
  • the main purpose of the present application is to provide a display module, which aims to provide a display module with a simple structure, low cost and light weight.
  • the display module proposed in this application includes:
  • a back plate the back plate is provided with a containing groove, and a reflecting surface is formed on one side wall of the containing groove;
  • a light guide plate is accommodated in the containing groove, a side of the light guide plate facing away from the reflecting surface has a light incident side surface, and a side of the light guide plate facing away from the bottom wall of the containing groove has a light exit surface; as well as
  • a light source is accommodated in the containing groove and is disposed adjacent to the light incident side of the light guide plate, the light source enters light from the light incident side and exits from the light exit surface, and the reflection surface reflects through The light from the light guide plate is emitted from the light exit surface.
  • the present application also proposes a display device including a display module, and the display module is the above-mentioned display module.
  • the display module proposed by the technical solution of the present application includes a back plate, a light source, and a light guide plate, wherein the back plate is provided with a receiving groove, and a side wall of the receiving groove is formed with a reflective surface; the light guide plate is accommodated in the receiving groove, and the light guide plate is backed A light incident side is formed on the side facing the reflective surface, and a light exit surface is formed on the side of the light guide plate facing away from the bottom wall of the receiving groove; the light source is provided in the receiving groove and is adjacent to the light incident side of the light guide plate. The incident light is emitted from the light exit surface, and the reflection surface reflects the light passing through the light guide plate and exits from the light exit surface.
  • a reflective surface is formed on the back plate, and the reflective surface of the back plate is used to directly reflect light, thereby improving the light utilization rate, while avoiding the provision of a reflective sheet on the back plate, and reducing costs.
  • the display module of the present application has a simple structure and realizes the lightness of the display module.
  • FIG. 1 is a schematic cross-sectional view of an embodiment of a display module of the present application.
  • fixed may be a fixed connection, a detachable connection, or integrated; It is a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediary. It can be the connection between two elements or the interaction between two elements, unless otherwise clearly defined.
  • This application proposes a display module 100.
  • a display module 100 includes:
  • the back plate 1, the back plate 1 is provided with a containing groove 11, and a reflecting surface 12 is formed on one side wall of the containing groove 11;
  • the light guide plate 3 is accommodated in the accommodating groove 11, the light guide plate 3 has a light incident side surface 31 on the side facing away from the reflecting surface 12, and the light guide plate 3 has a light exit surface 32 on the side facing away from the bottom wall of the accommodating groove 11;
  • the light source 2 is accommodated in the accommodating groove 11 and is disposed adjacent to the light entrance side 31 of the light guide plate 3.
  • the light source 2 enters light from the light entrance side 31 and exits from the light exit surface 32, and the reflection surface 12 reflects the light passing through the light guide plate 3 The light is emitted from the light exit surface 32.
  • a side wall of the receiving groove 11 forms a reflective surface 12, the light source 2 enters light from the light incident side surface 31, and part of the light passes through the light guide plate 3 to the reflective surface 12, and the reflective surface 12 reflects the light
  • the light exiting from the light exit surface 32 improves the light utilization rate and avoids the waste of resources.
  • the reflective surface 12 of the back plate 1 directly reflects light, which improves the light utilization rate, and at the same time avoids the provision of the reflective sheet 4 on the back plate 1, reducing the cost.
  • the display module 100 of the present application has a simple structure and realizes the lightness of the display module 100.
  • the reflectivity of the reflecting surface 12 is greater than or equal to 96.2%.
  • Reflectance indicates the ability of an object to reflect light.
  • the reflectivity of the reflecting surface is greater than or equal to 96.2%, which can completely reflect the light emitted by the light guide plate, thereby improving the light utilization rate.
  • the reflectivity of the side wall of the containing groove 11 is greater than or equal to 96.2%, the side wall of the containing groove 11 is used to directly reflect light, and it is not necessary to provide a side reflecting sheet 4, which not only simplifies the production process, but also reduce manufacturing cost.
  • the reflective surface and the back plate may be integrated, for example, a ceramic with good reflective effect is used. Of course, it can also be split.
  • the back plate can be made of metal or alloy, and the material of the reflective surface can be plastic, such as polyethylene terephthalate (Polyethylene terephthalate). terephthalate, referred to as PET).
  • the glossiness of the reflecting surface 12 is a, where 15 ⁇ a ⁇ 35.
  • Gloss is the degree to which the surface of the object is represented by numbers close to the mirror surface.
  • the gloss of the reflecting surface 12 is in the range of 15 to 35, the reflecting surface 12 has better reflection ability, which can reflect the light into the light guide plate 3 and reduce the light source. 2
  • the loss of light in the propagation process improves the utilization of light.
  • the material of the back plate 1 is ceramic.
  • the material of the back plate 1 may be ceramics, such as a composite ceramic material, and of course, other materials may be used.
  • the surface of the ceramic backplane 1 has a reflective optical function, and by adjusting the internal module structure, it is not necessary to provide a side reflective sheet on the side of the light guide plate 3.
  • ceramics can be injection molded to ensure that parts with complex shapes can be finished on the basis of low cost and low consumption.
  • the finished product has high dimensional accuracy, no or only a small amount of mechanical processing is required, and it is easy to realize mechanical automation; high thermal conductivity, no need to use traditional aluminum radiators, to meet the heat dissipation requirements of the internal light source; hot pressing sintering molding; thin wall strength , Can effectively ensure the flatness of the backplane 1, further ensure the optical visual effect requirements, and effectively avoid the problem of abrasion of the light guide plate 3.
  • the display module 100 further includes a reflective sheet 4.
  • the reflective sheet 4 is disposed between the light guide plate 3 and the bottom wall of the receiving slot 11.
  • the display module 100 is further provided with a reflective sheet 4 between the light guide plate 3 and the bottom wall of the containing groove 11, the light guide plate 3 facing the containing groove 11
  • the light emitted from one side of the bottom wall can enter the light guide plate 3 under the reflection of the reflection sheet 4 and pass through the light exit surface 32 of the light guide plate 3.
  • the display module 100 further includes a display panel 5 that covers the notch of the receiving slot 11.
  • the back plate 1 is provided with a supporting platform 13 adjacent to the reflective surface 12.
  • One end of the display panel 5 is pasted on the screen sealant 6 Carrying table 13.
  • the backplane 1 is provided with a supporting platform 13 for supporting the display panel 5 adjacent to the reflecting surface 12.
  • the supporting platform 13 may have a side wall of the accommodating groove 11 adjacent to the reflecting surface 12 extending outward.
  • the backplane 1 is integrally formed to simplify the production process.
  • the carrying platform 13 and the back plate 1 may be provided separately or connected by a detachable connection.
  • the screen sealant 6 may be a thermosensitive adhesive.
  • One end of the display panel 5 is pasted on the carrying platform 13 via the screen sealant 6 to achieve the effect of no border or narrow border, saving the total price of structural parts and mold costs, saving production costs, in addition, it can make the display module 100 more portable And beautiful appearance.
  • the back plate 1 can be roughened at the place where the screen sealing glue 6 is pasted, so as to facilitate the pasting of the screen sealing glue 6.
  • a protrusion 132 is provided on the side of the carrying platform 13 away from the notch, and the protrusion 132 has a limiting effect on the display panel 5.
  • the display panel can also be limited and fixed by the limit structure formed by the bearing platform and the boss.
  • the side of the carrying platform 13 facing the display panel 5 is provided with a positioning groove 131.
  • the screen sealant 6 is accommodated and limited to the positioning groove 131.
  • the sealing glue 6 is limited to the positioning groove 131 opened on the side of the carrying platform 13 facing the display panel 5, and the depth of the positioning groove 131 can be determined according to the thickness of the sealing glue 6 so that the sealing glue 6 is slightly exposed for positioning
  • the slot of the slot 131 is convenient for pasting the display panel 5.
  • the positioning groove 131 can, on the one hand, make the overall structure more stable; on the other hand, it can limit the position of the sealing glue 6 to ensure the consistency of the products produced.
  • the display module 100 further includes a plastic frame 7.
  • the plastic frame 7 includes an integrally connected connecting portion 72 and an extending portion 71.
  • the connecting portion 72 is provided on the outer wall of the receiving slot 11 adjacent to the light source 2.
  • the extending portion 71 Extending toward the notch of the accommodating groove 11, the end of the display panel 5 away from the supporting table 13 is pasted on the side of the extending portion 71 facing away from the bottom wall of the accommodating groove 11.
  • the connecting portion 72 and a side wall of the backplane 1 adjacent to the light source 2 can be connected by snaps or screws, which is convenient for disassembly, so as to facilitate the installation of the light source 2 and the PCB board 9 that controls the light source, and improve production efficiency.
  • the extending portion 71 is formed by bending and extending from the connecting portion 72 toward the notch of the accommodating groove 11. The end of the display panel 5 away from the carrier 13 is pasted on the extending portion 71. 5 Fixing is more stable, improving the structural stability of the product.
  • the display module 100 further includes an optical film 8.
  • the optical film 8 includes a diffusion sheet 81 and a brightness enhancement sheet 82 that are stacked, and the diffusion sheet 81 is attached to the light exit surface 32 of the light guide plate 3 and the brightness enhancement sheet 82. It is provided on the side of the diffusion sheet 81 facing away from the light guide plate 3.
  • the light exit surface 32 of the light guide plate 3 is provided with a diffusion sheet 81 and a brightness enhancement sheet 82 in this order.
  • the diffusion sheet 81 diffuses the light more uniformly and makes the light seen by the display panel 5 more uniform; the brightness enhancement sheet 82 can increase the brightness of light, thereby improving the display effect of the display device.
  • the linear light source 2 emitted by the light source 2 enters the light guide plate 3, it is reflected by the reflection sheet 4 and the reflection surface 12 and then exits from the light exit surface 32, and forms a uniform surface light source 2 through the diffusion sheet 81 and is displayed on the display panel 5.
  • the present application also proposes a display device (not shown).
  • the display device includes a display module 100, and the display module 100 is the above-mentioned display module 100. Since the display module 100 adopts all the technical solutions of all the above-mentioned embodiments, it has at least the effects brought by the technical solutions of the above-mentioned embodiments, and no more details are provided here.

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  • 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)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

L'invention concerne un module d'affichage (100) et un dispositif d'affichage. Le module d'affichage (100) comprend une plaque arrière (1), une source de lumière (2) et une plaque de guidage de lumière (3) ; la plaque arrière (1) est pourvue d'un évidement de réception (11) ; une surface réfléchissante (12) est formée sur une paroi latérale dudit évidement (11); la plaque de guidage de lumière (3) est logée dans l'évidement de réception (11) ; une surface de lumière incidente (31) est formée sur le côté de la plaque de guidage de lumière (3) opposé à la surface réfléchissante (12) ; une surface de lumière émergente (32) est formée sur le côté de la plaque de guidage de lumière (3) opposée à la paroi inférieure de l'évidement de réception (11) ; la source de lumière (2) est disposée dans l'évidement de réception (11) et est disposée adjacente à la surface de lumière incidente (31) de la plaque de guidage de lumière (3).
PCT/CN2019/113702 2018-11-05 2019-10-28 Module d'affichage et dispositif d'affichage WO2020093900A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201821813255.X 2018-11-05
CN201821813255.XU CN208795982U (zh) 2018-11-05 2018-11-05 显示模组和显示设备

Publications (1)

Publication Number Publication Date
WO2020093900A1 true WO2020093900A1 (fr) 2020-05-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/113702 WO2020093900A1 (fr) 2018-11-05 2019-10-28 Module d'affichage et dispositif d'affichage

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Country Link
CN (1) CN208795982U (fr)
WO (1) WO2020093900A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN208795982U (zh) * 2018-11-05 2019-04-26 深圳Tcl新技术有限公司 显示模组和显示设备
TWI719596B (zh) * 2019-08-21 2021-02-21 瑞儀光電股份有限公司 顯示器
CN112596307A (zh) * 2020-12-11 2021-04-02 北海惠科光电技术有限公司 一种无边框显示器及其组装方法
CN114442216A (zh) * 2022-01-29 2022-05-06 深圳创维-Rgb电子有限公司 背光模组和显示装置

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WO2018159603A1 (fr) * 2017-03-02 2018-09-07 オムロン株式会社 Dispositif de source lumineuse de surface, dispositif d'affichage et dispositif électronique
JP2018146917A (ja) * 2017-03-09 2018-09-20 オムロン株式会社 フレーム、面光源装置、表示装置、及び電子機器
CN208795982U (zh) * 2018-11-05 2019-04-26 深圳Tcl新技术有限公司 显示模组和显示设备

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Publication number Priority date Publication date Assignee Title
CN101019068A (zh) * 2005-08-31 2007-08-15 Lg化学株式会社 具有良好导热性的用于背光源组件和液晶显示器的背光源组件的反射板
JP2009158233A (ja) * 2007-12-26 2009-07-16 Omron Corp 光源装置及び液晶表示装置
CN202720414U (zh) * 2012-04-27 2013-02-06 Tcl光电科技(惠州)有限公司 一种液晶显示模组及其液晶电视
CN106980197A (zh) * 2016-01-18 2017-07-25 欧姆龙株式会社 框体、面光源装置、显示装置及电子设备
WO2018159603A1 (fr) * 2017-03-02 2018-09-07 オムロン株式会社 Dispositif de source lumineuse de surface, dispositif d'affichage et dispositif électronique
JP2018146917A (ja) * 2017-03-09 2018-09-20 オムロン株式会社 フレーム、面光源装置、表示装置、及び電子機器
CN206741148U (zh) * 2017-04-14 2017-12-12 Tcl王牌电器(惠州)有限公司 封屏胶的粘贴治具
CN108445664A (zh) * 2018-03-30 2018-08-24 京东方科技集团股份有限公司 一种背板及其制作方法、背光模组和显示装置
CN208795982U (zh) * 2018-11-05 2019-04-26 深圳Tcl新技术有限公司 显示模组和显示设备

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