WO2017185594A1 - Module de rétroéclairage, module d'affichage et dispositif d'affichage - Google Patents

Module de rétroéclairage, module d'affichage et dispositif d'affichage Download PDF

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Publication number
WO2017185594A1
WO2017185594A1 PCT/CN2016/099589 CN2016099589W WO2017185594A1 WO 2017185594 A1 WO2017185594 A1 WO 2017185594A1 CN 2016099589 W CN2016099589 W CN 2016099589W WO 2017185594 A1 WO2017185594 A1 WO 2017185594A1
Authority
WO
WIPO (PCT)
Prior art keywords
backlight module
plastic frame
light guide
guide plate
optical film
Prior art date
Application number
PCT/CN2016/099589
Other languages
English (en)
Chinese (zh)
Inventor
高建斌
Original Assignee
乐视控股（北京）有限公司
乐视致新电子科技（天津）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 乐视控股（北京）有限公司, 乐视致新电子科技（天津）有限公司 filed Critical 乐视控股（北京）有限公司
Publication of WO2017185594A1 publication Critical patent/WO2017185594A1/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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

Definitions

  • the embodiments of the present invention relate to the field of display technologies, and in particular, to a backlight module, a display module, and a display device.
  • TFT-LCD Thin Film Transistor Liquid Crystal Display
  • a backlight module of a liquid crystal display device generally uses an LED (light-emitting diode, LED for short) as a light source. According to the distribution position of the light source, the backlight module can be divided into a direct-lighting type and a side-input type. .
  • LED light-emitting diode
  • the main structure of the common side-lit backlight module includes: a backing plate 11 having an accommodating space, and a reflective sheet 12 disposed in the accommodating space of the backing plate 11 and sequentially disposed.
  • the light guide plate 13 and the optical film 14 are disposed between the side wall of the back plate 11 and the light incident end face of the light guide plate 13 (light-emitting diode), and the optical film.
  • the number of optical films 14 used in the backlight module is often not less than two.
  • the main structure of the liquid crystal display device further includes a liquid crystal panel 17 and a front frame 18, wherein the liquid crystal panel 17 is assembled on the front side of the plastic frame 16, and the front frame 18 is from the front side of the liquid crystal panel 17 and the backlight module.
  • the back panel 11 is assembled.
  • the present application provides a backlight module, a display module, and a display device to reduce the thickness of the backlight module, thereby reducing the thickness of the display device, and achieving a thin design of the display device.
  • the backlight module provided by the present application comprises a back plate, a reflective sheet, a light guide plate, a light source assembly, a plastic frame and at least one first optical film, wherein:
  • the backboard includes a bottom wall and a side wall forming an accommodation space
  • the reflective sheet and the light guide plate are sequentially placed in the accommodating space of the backboard;
  • the light source assembly is located between the light incident end surface of the light guide plate and the sidewall of the back plate;
  • the plastic frame is connected to the back plate, and includes a side wall opposite to the side wall of the back plate, and a front wall opposite to the front side of the light guide plate;
  • the at least one first optical film is located on a front side of the light guide plate and is located inside the front end wall end surface of the plastic frame.
  • an expansion gap is formed between the front wall end surface of the plastic frame and the at least one first optical film.
  • the side wall of the backboard has at least one tongue protruding toward the front side, and the first optical film has a mounting ear attached to the tongue for each of the tongues.
  • the tongues are at least two, disposed on the side wall of the back panel.
  • the back side of the front wall of the plastic frame is fixed with a buffer tape.
  • the second optical film is disposed between the front side of the light guide plate and the front wall of the plastic frame.
  • the front side of the front wall of the plastic frame has a limiting groove for limiting the liquid crystal panel.
  • the first optical film is located on the front side of the light guide plate and is located inside the front end wall end surface of the plastic frame, that is, the first optical film is placed in the opposite frame, which is compared with the prior art.
  • the design can greatly reduce the thickness of the backlight module, thereby reducing the thickness of the display device and achieving a thin design of the display device.
  • the present application further provides a display module, including the backlight module of any one of the foregoing technical solutions, and a liquid crystal panel located at a front side of the backlight module and a front frame located at a front side of the liquid crystal panel and connected to the backlight module.
  • the thickness of the display module is small, so that the thickness of the display device including the display module is small, and the thin design can be realized.
  • the present application also provides a display device, including the display module described in the foregoing technical solution.
  • the thickness of the display device is small, which is in line with the trend of thinning display devices.
  • the display device comprises a liquid crystal television, a liquid crystal display or a liquid crystal advertising screen.
  • FIG. 1 is a schematic cross-sectional view of a prior art display module
  • FIG. 2 is a schematic cross-sectional view of a display module according to an embodiment of the present application.
  • FIG. 3 is a schematic cross-sectional view showing a display module according to another embodiment of the present application.
  • FIG. 4 is a schematic cross-sectional view showing the tongue of the first optical film and the tongue of the back plate;
  • Figure 5 is a top plan view of the tongue of the first optical film and the tongue of the back plate.
  • 11-back plate 12-reflecting sheet; 13-light guide plate; 14-optical diaphragm; 15-LED lamp group; 16-plastic frame;
  • the backlight module provided by the embodiment of the present invention includes a backboard 21, a reflective sheet 22, a light guide plate 23, a light source assembly 25, a plastic frame 26, and at least one first optical film 241, wherein:
  • the back plate 21 includes a bottom wall 211 and a side wall 212 forming an accommodation space;
  • the reflective sheet 22 and the light guide plate 23 are sequentially placed in the accommodating space of the back plate 21;
  • the light source assembly 25 is located between the light incident end surface of the light guide plate 23 and the side wall 212 of the back plate 21;
  • the plastic frame 26 is connected to the back plate 21, and includes a side wall 261 opposite to the side wall 212 of the back plate 21, and a front wall 262 opposite to the front side periphery of the light guide plate 23;
  • the at least one first optical film 241 is located on the front side of the light guide plate 23 and is located inside the end surface of the front barrier wall 262 of the plastic frame 26.
  • “front” and “front side” can be understood as the side of the display device that is close to the viewer when the display device is in normal use, and the “back side” can be understood as the side of the component that is away from the viewer.
  • the overall shape is a rectangle, and when the display device is in normal use, the screen faces the viewer and is perpendicular to the ground or at an angle. Therefore, when the display device is defined, the "front side” is the side of the part close to the viewer, the “back side” is the side of the part away from the viewer, and the side of the part away from the ground is the "sky side”.
  • the side close to the ground is the "ground side”
  • the side of the component facing the viewer is "left side” on the left hand side and "right side” on the right hand side.
  • the side wall 212 of the backboard 21 can be divided into a side wall, a side wall, a left side wall, and a right side wall.
  • the specific type of the light source assembly 25 is not limited, and an LED lamp group is preferably employed.
  • the specific arrangement position of the light source unit 25 is not limited.
  • the ground side end surface of the light guide plate 23 is a light incident end surface, and the light source unit 25 is disposed between the ground side end surface of the light guide plate 23 and the ground side wall of the back plate 21.
  • the specific connection structure of the plastic frame 26 and the back plate 21 is not limited.
  • a card point protrusion (not shown) is designed on the side wall 212 of the back plate 21, and the side wall 261 of the plastic frame 26 is designed at a corresponding position.
  • the card hole (not shown), the plastic frame 26 and the back plate 21 are engaged by a plurality of such structures; in addition, the back plate 26 and the plastic frame 21 can also be fixedly connected by fasteners such as screws.
  • the specific type of the first optical film 241 is not limited, and may be, for example, a diffusion sheet, a prism sheet or a protective sheet, or the like.
  • the number of the first optical films 241 is also not limited, and may be one, two, three or more sheets, and needs to be determined according to the optical design requirements of the backlight module.
  • the first optical film 241 is located on the front side of the light guide plate 23 and is located inside the end surface of the front wall 262 of the plastic frame 26, that is, the first optical film 241 is placed in the plastic frame 26 Compared with the optical film in the prior art, which is located between the light guide plate and the front wall of the plastic frame, the structure design can greatly reduce the thickness of the backlight module, thereby reducing the thickness of the display device and realizing the thinness of the display device. Design.
  • the plastic frame An end face of the front retaining wall 262 of 26 has an expansion gap with the at least one first optical film 241.
  • the expansion of the expansion gap can prevent the first optical film 241 from being deformed by expansion and contraction, thereby ensuring the picture quality of the display device.
  • the side wall 212 of the back plate 21 has at least one tongue 213 protruding toward the front side, and the first optical film 241 has a tongue and a tongue corresponding to each of the tongues 213. 213 mounted mounting ears 2411.
  • the assembler can quickly and accurately assemble and position the first optical film 241 and the plastic frame, thereby improving assembly efficiency and ensuring assembly precision.
  • the specific number and arrangement position of the tongue pieces 213 are not limited.
  • at least two tabs are disposed on the side wall of the back panel.
  • the backlight module may also include a second optical film 242 located between the front side of the light guide plate 23 and the front barrier wall 262 of the plastic frame 26.
  • the second optical film 242 may be an optical film having a small thickness such as a diffusion sheet. Compared with the prior art, the structural design can still reduce the thickness of the backlight module to some extent.
  • the front side wall 262 of the plastic frame 26 is fixed with a cushioning tape 29 on the back side.
  • the provision of the cushioning tape 29 can reduce the scratching of the light guide plate 23 or the second optical film by the front barrier wall 262, thereby facilitating the improvement of the picture quality of the display device and the yield of the product.
  • the front side of the front wall 262 of the plastic frame 26 has a limiting groove 263 for limiting the liquid crystal panel 27 .
  • the liquid crystal panel 27 can be affixed and fixed in the limiting groove 263 by a buffer tape.
  • the liquid crystal panel 27 is assembled in the limiting recess 263, which not only has convenient positioning, but also does not increase the thickness of the backlight module.
  • the embodiment of the present application further provides a display module, including the backlight module of any of the foregoing embodiments, and a liquid crystal panel 27 located at a front side of the backlight module and a front side of the liquid crystal panel 27 and a backlight
  • the front frame 28 of the module connection The thickness of the display module is small, so that the thickness of the display device including the display module is small, and the thin design can be realized.
  • the light source assembly 25 is assembled in the accommodating space of the backboard 21;
  • the reflective sheet 22 and the light guide plate 23 are sequentially assembled in the accommodating space of the back plate 21;
  • the plastic frame 26 is assembled from the front side of the light guide plate 23 and the back plate 21;
  • the mounting ears of the respective first optical films 241 are sequentially attached to the tongues of the back plate 21 to make the first light
  • the diaphragm 241 is assembled on the inner side of the end surface of the front wall 262 of the plastic frame 26;
  • the liquid crystal panel 27 is assembled in the limiting groove 263 of the plastic frame 26;
  • the front frame 28 is assembled from the front side of the liquid crystal panel 27 to the bezel 26 and the back plate 21.
  • the embodiment of the present application further provides a display device, including the display module of the foregoing embodiment.
  • the thickness of the display device is small, which is in line with the trend of thinning display devices.
  • the specific type of display device is not limited, and may be, for example, a liquid crystal television, a liquid crystal display, or a liquid crystal advertising screen, and the like.

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

Abstract

L'invention concerne un module de rétroéclairage, comprenant un panneau arrière (21), une feuille réfléchissante (22), une plaque de guidage de lumière (23), un ensemble source de lumière (25), un cadre en plastique (26) et au moins un premier film optique (241). Le panneau arrière comprend une paroi inférieure (211) et des parois latérales (212) formant un espace de logement; la feuille réfléchissante et la plaque de guidage de lumière sont placées en séquence dans l'espace de logement du panneau arrière; l'ensemble source de lumière est situé entre une face d'extrémité d'incidence de la plaque de guidage de lumière et une paroi latérale du panneau arrière; le cadre en plastique est relié au panneau arrière, et comprend des parois de chicane latérales (261) en regard de parois latérales du panneau arrière et des parois de chicane avant (262) en regard de la périphérie d'un côté avant de la plaque de guidage de lumière; et ledit premier film optique est situé sur le côté avant de la plaque de guidage de lumière et est situé sur le côté intérieur des faces d'extrémité des parois de chicane avant du cadre en plastique. L'invention concerne en outre un module d'affichage et un dispositif d'affichage. La structure selon laquelle le premier film est placé au milieu par rapport au cadre en plastique peut fortement réduire l'épaisseur du module de rétroéclairage, ce qui permet de réduire l'épaisseur du dispositif d'affichage, et d'obtenir ainsi une conception plus mince du dispositif d'affichage.
PCT/CN2016/099589 2016-04-25 2016-09-21 Module de rétroéclairage, module d'affichage et dispositif d'affichage WO2017185594A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610264236.5A CN105842919A (zh) 2016-04-25 2016-04-25 一种背光模组、显示模组及显示设备
CN201610264236.5 2016-04-25

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WO2017185594A1 true WO2017185594A1 (fr) 2017-11-02

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109672835A (zh) * 2018-12-28 2019-04-23 深圳Tcl新技术有限公司 显示模组和电视机
CN112782890A (zh) * 2021-03-15 2021-05-11 厦门天马微电子有限公司 一种背光模组、显示装置及其制备方法
CN113867046A (zh) * 2021-09-27 2021-12-31 京东方科技集团股份有限公司 背光胶框、背光模组及显示装置
CN114442376A (zh) * 2022-02-22 2022-05-06 四川长虹电器股份有限公司 一种侧入式超窄第四边液晶模组
CN114594543A (zh) * 2022-03-23 2022-06-07 厦门天马微电子有限公司 背光模组及显示装置
CN114609817A (zh) * 2022-03-08 2022-06-10 创维光电科技(深圳)有限公司 显示模组和显示装置
CN115132071A (zh) * 2021-03-29 2022-09-30 华为技术有限公司 一种胶框及电子设备

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CN105842919A (zh) * 2016-04-25 2016-08-10 乐视控股（北京）有限公司 一种背光模组、显示模组及显示设备
CN106483699A (zh) * 2016-12-01 2017-03-08 奥英光电（苏州）有限公司 一种液晶显示结构
CN106646993B (zh) * 2016-12-13 2024-04-16 微鲸科技有限公司 一种显示装置及液晶面板
CN107062062A (zh) * 2016-12-27 2017-08-18 武汉华星光电技术有限公司 一种阻挡部件及包含其的背光模组
CN107247364B (zh) * 2017-07-27 2021-01-26 京东方科技集团股份有限公司 一种背光模组及显示装置
CN107656395A (zh) * 2017-09-08 2018-02-02 伟志光电（深圳）有限公司 一种铝铸件凸形曲面背光源
CN108538199B (zh) * 2018-05-24 2024-04-26 蚌埠国显科技有限公司 一种超薄屏结构
CN110174800A (zh) * 2019-05-27 2019-08-27 武汉华星光电技术有限公司 背光模组和液晶模组
CN113589585B (zh) * 2020-04-30 2022-09-13 深圳市万普拉斯科技有限公司 背光模组与液晶显示器
CN114460777A (zh) * 2020-11-10 2022-05-10 京东方科技集团股份有限公司 背光模组及显示装置
CN114791682A (zh) * 2021-01-25 2022-07-26 北京京东方光电科技有限公司 背光模组以及液晶显示装置

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109672835A (zh) * 2018-12-28 2019-04-23 深圳Tcl新技术有限公司 显示模组和电视机
CN112782890A (zh) * 2021-03-15 2021-05-11 厦门天马微电子有限公司 一种背光模组、显示装置及其制备方法
CN112782890B (zh) * 2021-03-15 2022-09-23 厦门天马微电子有限公司 一种背光模组、显示装置及其制备方法
CN115132071A (zh) * 2021-03-29 2022-09-30 华为技术有限公司 一种胶框及电子设备
CN115132071B (zh) * 2021-03-29 2024-05-14 华为技术有限公司 一种胶框及电子设备
CN113867046A (zh) * 2021-09-27 2021-12-31 京东方科技集团股份有限公司 背光胶框、背光模组及显示装置
CN113867046B (zh) * 2021-09-27 2023-10-20 京东方科技集团股份有限公司 背光胶框、背光模组及显示装置
CN114442376A (zh) * 2022-02-22 2022-05-06 四川长虹电器股份有限公司 一种侧入式超窄第四边液晶模组
CN114609817A (zh) * 2022-03-08 2022-06-10 创维光电科技(深圳)有限公司 显示模组和显示装置
CN114609817B (zh) * 2022-03-08 2024-03-22 创维光电科技(深圳)有限公司 显示模组和显示装置
CN114594543A (zh) * 2022-03-23 2022-06-07 厦门天马微电子有限公司 背光模组及显示装置
CN114594543B (zh) * 2022-03-23 2024-03-15 厦门天马微电子有限公司 背光模组及显示装置

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