WO2017197943A1 - 一种背光模组及显示器件 - Google Patents

一种背光模组及显示器件 Download PDF

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Publication number
WO2017197943A1
WO2017197943A1 PCT/CN2017/074366 CN2017074366W WO2017197943A1 WO 2017197943 A1 WO2017197943 A1 WO 2017197943A1 CN 2017074366 W CN2017074366 W CN 2017074366W WO 2017197943 A1 WO2017197943 A1 WO 2017197943A1
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WO
WIPO (PCT)
Prior art keywords
guide plate
prism film
light guide
backlight module
light
Prior art date
Application number
PCT/CN2017/074366
Other languages
English (en)
French (fr)
Inventor
金起满
郑喆奎
Original Assignee
京东方科技集团股份有限公司
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 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US15/554,636 priority Critical patent/US10627563B2/en
Publication of WO2017197943A1 publication Critical patent/WO2017197943A1/zh

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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
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133615Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02B6/0056Means for improving the coupling-out of light from the light guide for producing polarisation effects, e.g. by a surface with polarizing properties or by an additional polarizing elements
    • 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
    • G02B6/0081Mechanical 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
    • 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

Definitions

  • the present disclosure relates to the field of liquid crystal display, and in particular, to a backlight module and a display device.
  • the present disclosure provides a backlight module and a display device, which are thinner in thickness.
  • the present disclosure provides a backlight module including a light guide plate and a prism film, and the prism film is disposed on a light emitting surface of the light guide plate.
  • the prism film is attached to the light-emitting surface of the light guide plate by an adhesive.
  • the adhesive is disposed at an edge of the light-emitting surface of the light guide plate and is located in a non-display area.
  • the adhesive has a thickness of 5 to 3000 microns.
  • the adhesive agent is at least one of a resin adhesive, a silicone adhesive, and a rubber adhesive.
  • the adhesive has a thickness of 100-1000 microns.
  • the light guide plate and the prism film are integrated.
  • the prism film is a reverse prism film, and the reverse prism film is provided with a triangular prism unit, and the prism unit triangular prism tip is disposed opposite to the light guide surface of the light guide plate, and the prism unit is triangular There is a gap between the prism tip and the light-emitting surface of the light guide plate.
  • the light guide plate is a glass material.
  • the backlight module further includes a light bar having a light source, wherein the adhesive and the The opposite position of the light bar has a notch that corresponds to the position of the light source.
  • a spacer is disposed between the light guide plate and the reverse prism film.
  • the spacer is integral with the light guide plate.
  • a side of the spacer adjacent to the reverse prism film is coated with an adhesive coating to bond the spacer to the reverse prism film.
  • the spacer object is coated with an adhesive coating on the two sides of the reverse prism film and the light guide plate, respectively, to separate the spacer from the reverse prism film and the guide The light board is bonded.
  • the present disclosure also provides a display device including a polarizer, and further comprising the backlight module; the polarizer is disposed on the prism film.
  • the prism film and the polarizer are integrated.
  • the polarizer, the prism film and the light guide plate are integrated structures.
  • the display device further includes a first substrate and a second substrate, and a display layer between the first substrate and the second substrate, wherein the backlight module is disposed on a side of the second substrate away from the display layer, and is polarized
  • the sheet is disposed between the second substrate and the backlight module, and the second substrate, the polarizer, the prism film and the light guide plate are integrated structures.
  • the present disclosure also provides a mobile terminal including the above display device.
  • the backlight module and the display device provided by the present disclosure have the prism film disposed on the light-emitting surface of the light guide plate, so that the prism film and the light guide plate can be disposed between the prism film and the light guide plate.
  • the gap does not need to leave extra gaps, which in turn reduces the thickness of the backlight module, thereby reducing the overall thickness of the display device.
  • the prism film and the lower polarizer are integrally formed, so that the display panel is substantially integrally formed with the backlight module, so that the thickness of the display device is further reduced.
  • FIG. 1a is a schematic structural view of a backlight module according to some embodiments of the present disclosure.
  • FIG. 1b is a schematic structural diagram of a backlight module according to some embodiments of the present disclosure.
  • FIG. 2 is a schematic structural view of a display device of the related art
  • FIG. 3 is a schematic structural diagram of a display device according to some embodiments of the present disclosure.
  • FIG. 4a is a schematic structural diagram of a display device according to some embodiments of the present disclosure.
  • 4b is a schematic structural diagram of a display device according to some embodiments of the present disclosure.
  • FIG. 5 is a schematic structural view of a display device in a top view according to some embodiments of the present disclosure.
  • the present disclosure first provides a backlight module, which is configured as shown in FIG. 1a, and includes a light guide plate 101 and a prism film 102.
  • the prism film 102 is disposed on a light exit surface of the light guide plate 101.
  • the structural design of the prism film portion is as shown in FIG. 2.
  • the prism sheet 201 is disposed in the display panel on the side of the lower polarizer 202, and the lower polarizer 202 is away from the
  • One side of the prism sheet 201 is provided with an array substrate 203, a liquid crystal layer 204, a color filter substrate 205, and an upper polarizer 206 in this order.
  • a light guide plate 207, a light reflecting sheet 208, and a light source 209 are disposed on a side of the prism sheet 201 away from the lower polarizer 202.
  • the backlight module provided by the present disclosure has a prism film disposed on a light-emitting surface of the light guide plate, thereby reducing a distance between the prism film and the light guide plate.
  • the prism can be formed according to the actual thickness of the prism film. A corresponding gap is left between the film and the light guide plate, thereby eliminating unnecessary gaps between the light guide plate and the prism film, thereby reducing the thickness of the backlight module.
  • the display panel can be assembled with the prism film or the display panel can be in close contact with the prism film, thereby allowing the overall thickness of the display device to be further reduced. Therefore, the backlight module provided by the present disclosure has a smaller thickness.
  • the thickness of the display device can also be reduced in the display device. At the same time, since the thickness of the prism film is smaller than the thickness of the prism sheet in the related art, the thickness of the backlight module can be further reduced.
  • the backlight module provided by some embodiments of the present disclosure further includes a structure of the reflective sheet 104, the light source 105, and the like.
  • the light guide plate may be affixed to the prism film.
  • a spacer is disposed between the light guide plate and the reverse prism film.
  • the spacers are coated on both sides with an adhesive coating 1031 for bonding the light guide plate and the spacer, and the prism film and the spacer. .
  • a spacer is disposed between the light guide plate and the prism film, and the spacer The mat is located in the non-display area.
  • a spacer is disposed between the light guide plate and the reverse prism film, and the spacer is coated on both sides with an adhesive coating for guiding the light guide plate and the spacer, And the prism film and the spacer are bonded.
  • the light guide plate may be integrally formed with the spacer, as shown in FIG. 4a, that is, the light guide plate 401, the prism film 402, and the non-display disposed between the light guide plate 401 and the prism film 402.
  • a spacer 403 of the area Since the prism film 402 is a reverse prism film in most cases, including a plurality of inverted triangular prism units 4021, in order to prevent the tip end of the prism unit 4021 from touching the light guide plate 401, the light guide plate 401 and the prism film 402 are damaged.
  • a spacer 403 must be disposed between the light guide plate 401 and the prism film 402 to function as a support for the light guide plate 401 and the prism film 402 to prevent frictional damage by contact between the two.
  • the arrangement of the light source 405 and the reflection sheet 404 is unchanged.
  • a side of the spacer 403 adjacent to the prism film 402 is provided with an adhesive coating 4031 to bond the spacer 403 with the prism film 402.
  • the prism film 102 is adhered to the light-emitting surface of the light guide plate 101 by an adhesive 103.
  • the adhesive 103 is disposed at an edge of the light emitting surface of the light guide plate 101.
  • the method of bonding and fixing with an adhesive is relatively simple and easy to implement, and does not adversely affect the light guide plate and the prism film, and the adhesive itself can also serve as a support between the light guide plate and the prism film;
  • the thickness of the agent can leave enough space between the light guide plate and the prism film to prevent the prism film from contacting the light guide plate to cause friction on the light guide plate.
  • the adhesive has a thickness of from 5 to 3000 microns.
  • the thickness of the adhesive is 5 to 3000 ⁇ m
  • the thickness is not excessively increased because the distance between the light guide plate and the prism film is too large, and the distance between the light guide plate and the prism film is not exceeded. Small causes the top edge of the prism on the prism film to rub against the light guide plate to cause damage to the light guide plate.
  • the adhesive is a resin adhesive, or a silicone adhesive, or a rubber adhesive.
  • the adhesive has a thickness of from 100 to 1000 microns.
  • the thickness of the adhesive is 100-1000 micrometers, the requirements for the notch in the assembled state of the prism film of most models can be satisfied.
  • the light guide plate is integrated with the prism film.
  • the prism film 102 is a reverse prism film on which a triangular prism unit 1021 is disposed, the prism unit triangular prism tip and the The light-emitting surfaces of the light guide plate 101 are oppositely disposed.
  • the prism film further includes a substrate, which is a film, specifically a glass film or the like.
  • a substrate which is a film, specifically a glass film or the like.
  • the light guide plate is a glass material, which can improve light transmittance.
  • a portion of the adhesive 103 corresponding to the light bar is provided with a notch corresponding to the position of the light source 105 of the light bar.
  • the present disclosure further provides a display device, including a polarizer, and a backlight module provided by some embodiments of the present disclosure.
  • the backlight module includes a light guide plate and a prism film according to some embodiments of the present disclosure;
  • the polarizer is disposed on a light exiting side of the prism film.
  • the polarizer is disposed on the prism film, so that the spacing between the display panel and the backlight module is greatly reduced, the thickness of the entire display device is reduced, and the mechanical strength is maintained while the thickness is thin.
  • Ultra-thin film liquid crystal display device Ultra-thin film liquid crystal display device.
  • the prism film can be attached to a polarizer. If the prism film is a reverse prism film, the gap between the polarizer and the prism film is very small in the case of bonding, so that the gap between the display panel and the backlight module is very small, the display panel and the backlight module Excess gaps can be eliminated, thereby reducing the thickness of the entire display device.
  • the prism film is integrated with the polarizer.
  • the panel and the backlight module substrate are integrally formed, so that the thickness of the display device is greatly reduced.
  • the polarizer, the prism film, and the light guide plate are of an integrated structure, which further reduces the thickness of the device.
  • the display device further includes a first substrate and a second substrate, and a display layer between the first substrate and the second substrate, the backlight module being disposed on the second substrate away from the display layer
  • the polarizer is disposed between the second substrate and the backlight module, and the second substrate, the polarizer, the prism film, and the light guide plate are an integrated structure.
  • the display layer may specifically be a liquid crystal layer.
  • a display device is provided, still referring to FIG. 3, including reflection The sheet 304, the light guide plate 302, the LED light source 305, the adhesive 306, the prism film 303, the lower polarizer 301, the array substrate 307, the liquid crystal layer 308, the color filter substrate 309, and the upper polarizer 310.
  • the prism film 303 is a reverse prism film.
  • the reverse prism film is provided with a triangular prism unit 3031.
  • the prism unit triangular prism tip is disposed opposite to the light emitting surface of the light guide plate 302.
  • the reflection sheet 304 is disposed on a surface of the light guide plate 302 opposite to the light-emitting surface, and the adhesive 306 is disposed between the prism film 303 and the light-emitting surface of the light guide plate 302, and is located in the non-display area.
  • the lower polarizer 301 is integrally formed with the prism film 303, and is disposed on one side of the prism film 303 away from the light guide plate 302. On the side of the lower polarizer 301 away from the prism film 303, an array substrate 307, a liquid crystal layer 308, and a color filter substrate 309 are sequentially disposed.
  • the upper polarizer 310 On the side of the lower polarizer 301 away from the prism film 303, an array substrate 307, a liquid crystal layer 308, and a color filter substrate 309 are sequentially disposed.
  • the light guide plate 302 is provided with a dot which is a pattern provided on the light guide plate 302 for emitting light incident on the side surface of the light guide plate at an exit angle of 60 degrees or more toward the light exit surface.
  • the light emitted toward the side surface having a large emission angle passes through the reverse prism film located on the surface of the light guide plate, and is converted into light that is concentrated in the front direction.
  • the width of the light guide plate pattern is not limited, and since the pattern is not recognized, it is preferable to have a width as narrow as possible, the pattern ink pattern, the V-shaped pattern, the U-shaped pattern, the spherical pattern, and the like for light emission.
  • the light guide plate 302 is a glass material.
  • the adhesive 103 is substantially rectangular in plan view, and the adhesive 103 is provided with a notch on the light incident side of the light guide plate 102, and the notch corresponds to the position of the LED light source 105.
  • the thickness of the adhesive should preferably be greater than 5 ⁇ m and less than 3000 ⁇ m.
  • the thickness of the adhesive is more than 5 ⁇ m, an air layer is formed, so that the light guiding function under the difference in refractive index of the different light guide plates can be maintained.
  • it is less than 5 um, there is a problem that the light guiding function of the light guide plate is lost due to the fluctuation property of the light.
  • the thickness is more than 3000um, the thickness reduction requirement cannot be satisfied.
  • the thickness of the adhesive is greater than 100 um and less than 1000 um, and the light guide function of the light guide plate can be prevented, the need for thinning of the display device can be satisfied, and the light guide plate can be prevented from being worn by the top of the reverse prism film contacting the light guide plate.
  • the backlight module and the display device provided by the present disclosure have the prism film disposed on the light-emitting surface of the light guide plate, so that the prism film and the light guide plate can be disposed between the prism film and the light guide plate.
  • the gap does not need to leave extra gaps, which in turn reduces the thickness of the backlight module, thereby reducing the overall thickness of the display device.
  • the prism film and the lower polarizer are integrally formed, so that the display panel is substantially integrally formed with the backlight module, so that the thickness of the display device is The degree is further reduced.

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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)
  • Liquid Crystal (AREA)

Abstract

一种背光模组及显示器件,背光模组包括导光板(101)和棱镜膜(102),棱镜膜(102)设置于导光板(101)的出光面。显示器件,包括一下偏光片(202),还包括背光模组;下偏光片(202)设置在棱镜膜(102)上。使得背光模组的厚度降低,显示器件的整体厚度缩小。

Description

一种背光模组及显示器件
相关申请的交叉引用
本申请主张在2016年5月18日在中国提交的中国专利申请号No.201610331066.8的优先权,其全部内容通过引用包含于此。
技术领域
本公开涉及液晶显示领域,尤其涉及一种背光模组及显示器件。
背景技术
在最近的移动液晶显示装置中,为了减少厚度来改善移动性和审美性,往往需要对面板玻璃进行薄化,或者对背光部分的光学膜进行复用,来减少面板厚度。然而无论是哪种方式,对技术的要求均比较高。
发明内容
有鉴于此,本公开提供一种背光模组及显示器件,厚度更薄。
基于上述目的,本公开提供的一种背光模组,包括导光板和棱镜膜,所述棱镜膜设置于所述导光板的出光面。
可选的,所述棱镜膜通过粘结剂贴合在所述导光板的出光面。
可选的,所述粘接剂设置在所述导光板出光面的边缘,位于非显示区域。
可选的,所述粘接剂的厚度为5-3000微米。
可选的,所述粘接剂为:树脂粘接剂、硅胶粘接剂、橡胶粘接剂中的至少一种。
可选的,所述粘接剂的厚度为100-1000微米。
可选的,所述导光板与所述棱镜膜一体化结构。
可选的,所述棱镜膜为逆棱镜膜,所述逆棱镜膜上设置有三角形状的棱镜单元,所述棱镜单元三角形棱镜尖部与所述导光板出光面相对设置,所述棱镜单元三角形棱镜尖部与所述导光板出光面之间存在缺口。
可选的,所述导光板为玻璃材料。
可选的,所述背光模组还包括具有光源的灯条,其中,所述粘接剂与所述 灯条相对的位置具有缺口,所述缺口与所述光源位置对应。
可选的,所述导光板和逆棱镜膜之间设置有隔垫物。
可选的,所述隔垫物与所述导光板为一体结构。
可选的,所述隔垫物靠近所述逆棱镜膜的一侧设置涂覆有粘合涂层,以将所述隔垫物与所述逆棱镜膜粘合。
可选的,所述隔垫物体靠近所述逆棱镜膜和所述导光板的两侧分别涂覆由粘合涂层,以将所述隔垫物分别与所述逆棱镜膜和所述导光板粘合。
本公开还提供一种显示器件,包括一偏光片,还包括上述背光模组;所述偏光片设置在所述棱镜膜上。
可选的,所述棱镜膜与所述偏光片一体化结构。
可选的,所述偏光片、棱镜膜和导光板为一体化结构。
可选的,所述显示器件还包含第一基板和第二基板,以及第一基板和第二基板之间的显示层,所述背光模组设置在第二基板远离显示层的一侧,偏光片设置在第二基板和背光模组之间,所述第二基板、偏光片、棱镜膜和导光板为一体化结构。
本公开还提供一种移动终端,包括上述显示器件。
从上面所述可以看出,本公开提供的背光模组和显示器件,将棱镜膜设置在导光板出光面,从而棱镜膜和导光板之间能够恰好留出避免棱镜单元剐蹭导光板所必要的缺口,无需留出多余的缺口,进而使得背光模组的厚度降低,从而显示器件的整体厚度缩小。本公开实施例提供的显示器件,将棱镜膜和下偏光片一体制作,从而显示面板基本上与背光模组一体制作,使得显示器件的厚度进一步缩小。
附图说明
图1a为本公开一些实施例的背光模组结构示意图;
图1b为本公开一些实施例的背光模组结构示意图;
图2为相关技术的显示器件结构示意图;
图3为本公开一些实施例的显示器件结构示意图;
图4a为本公开一些实施例的显示器件结构示意图;
图4b为本公开一些实施例的显示器件结构示意图;
图5为本公开一些实施例的显示器件俯视状态下结构示意图。
具体实施方式
为使本公开要解决的技术问题、技术方案和优点更加清楚,下面将结合附图及具体实施例进行详细描述。
本公开首先提供一种背光模组,结构如图1a所示,包括导光板101和棱镜膜102,所述棱镜膜102设置于所述导光板101的出光面。
相关技术中,棱镜膜部分的结构设计如图2所示,在图2所示的相关技术中,棱镜片201设置于显示面板中,位于下偏光片202一侧,在下偏光片202远离所述棱镜片201的一侧依次设置阵列基板203、液晶层204、彩膜基板205、上偏光片206。棱镜片201远离下偏光片202的一侧设置有导光板207、反光片208、光源209。在显示面板与背光模组组装时,为避免棱镜膜与背光模组的导光板207接触发生摩擦,通常会预留很大的空隙。这样无形中增加了显示器件的整体厚度。
本公开提供的背光模组,将棱镜膜设置在导光板的出光面,从而减小棱镜膜与导光板之间的距离,在组装棱镜膜和导光板时,可以根据棱镜膜的实际厚度在棱镜膜和导光板之间留出相应的缺口,省去导光板和棱镜膜之间多余的空隙,进而减小背光模组的厚度。在后续制作过程中,显示面板能够与棱镜膜接触组装或显示面板能够与棱镜膜近距离接触,从而允许显示器件整体的厚度进一步降低,因此本公开所提供的背光模组具有厚度更小,在显示器件中也能够减小显示器件的厚度。同时,由于棱镜膜的厚度比相关技术中棱镜片的厚度小,背光模组的厚度能够进一步降低。
仍然参照图1a,本领域技术人员应当理解,本公开一些实施例所提供的背光模组还包括反射片104、光源105等结构。
在本公开的一些实施例中,所述导光板可以与棱镜膜粘贴连接。
在本公开的一些实施例中,所述导光板和逆棱镜膜之间设置有隔垫物。
如图1b所示,在本公开的一些实施例中,所述隔垫物两侧涂覆有粘合涂层1031,用于将导光板和隔垫物、以及棱镜膜和隔垫物粘合。
在本公开的一些实施例中,所述导光板与棱镜膜之间设置隔垫物,所述隔 垫物位于非显示区域。
在本公开的一些实施例中,所述导光板和逆棱镜膜之间设置有隔垫物,所述隔垫物两侧涂覆有粘合涂层,用于将导光板和隔垫物、以及棱镜膜和隔垫物粘合。
在本公开的一些实施例中,所述导光板可以与隔垫物一体成型制作,如图4a所示,即导光板401、棱镜膜402以及设置于导光板401和棱镜膜402之间非显示区域的隔垫物403。由于在大多数情况下,棱镜膜402为逆棱镜膜,包括多个倒三角形的棱镜单元4021,为避免棱镜单元4021的尖端触碰到导光板401,对导光板401和棱镜膜402造成损伤,必须在导光板401和棱镜膜402之间设置隔垫物403,起着支撑导光板401和棱镜膜402的作用,避免二者接触而摩擦损伤。光源405和反射片404的设置方式不变。如图4b所示,隔垫物403靠近棱镜膜402的一侧设置涂覆有粘合涂层4031,以将隔垫物403与棱镜膜402粘合。
在本公开的一些实施例中,仍然参照图1a,所述棱镜膜102通过粘结剂103贴合在所述导光板101的出光面。所述粘接剂103设置在所述导光板101出光面的边缘。
使用粘接剂贴合固定的方式比较简单,容易实现,同时不会对导光板和棱镜膜造成不良影响,粘接剂本身也可以作为导光板和棱镜膜之间的支撑物;通过调整粘接剂的厚度,可以在导光板和棱镜膜之间留出足够的空隙,避免棱镜膜接触导光板而对导光板产生摩擦。
在本公开的一些实施例中,所述粘接剂的厚度为5-3000微米。
当所述粘接剂厚度为5-3000微米时,则不会因为导光板和棱镜膜之间的距离太大而过多地增加厚度,也不会因为导光板和棱镜膜之间的距离过小而导致棱镜膜上的棱镜顶边摩擦到导光板而造成导光板损伤。
在本公开的一些实施例中,所述粘接剂为:树脂粘接剂、或硅胶粘接剂、或橡胶粘接剂。
在本公开的一些实施例中,所述粘接剂的厚度为100-1000微米。
当粘接剂的厚度为100-1000微米时,能够满足大多数型号的棱镜膜组装状态下对缺口的要求。
在本公开的一些实施例中,所述导光板与所述棱镜膜一体化结构。
在本公开的一些实施例中,仍然参照图1a,所述棱镜膜102为逆棱镜膜,所述逆棱镜膜上设置有三角形状的棱镜单元1021,所述棱镜单元三角形棱镜尖部与所述导光板101出光面相对设置。
在本公开的一些实施例中,棱镜膜还包括基底,该基底为薄膜,具体可以为玻璃薄膜等。当棱镜膜设置于导光板上时,棱镜膜的基底厚度相比相关技术也可以大幅度降低,棱镜膜的基底厚度可以降低到膜材的厚度级别,从而棱镜膜整体的厚度也能够降低,从而整体上显示器件的厚度进一步降低。
在本公开的一些实施例中,所述导光板为玻璃材料,可以提高光线透过率。
在本公开的一些实施例中,如图5所示,所述粘接剂103与所述灯条对应的部分设置有缺口,所述缺口与所述灯条的光源105位置相对应。
同时,本公开还提供一种显示器件,包括一偏光片,还包括本公开的一些实施例所提供的背光模组,背光模组包括本公开一些实施例中所述的导光板、棱镜膜;所述偏光片设置在所述棱镜膜的出光侧。
本公开的实施例所提供的显示器件,偏光片设置在棱镜膜上,从而显示面板和背光模组之间的间距大幅度缩小,整个显示器件厚度减少,在厚度薄的同时能维持机械强度的超薄膜液晶显示装置。
在本公开的实施例中,所述棱镜膜能够粘贴在偏光片上。若所述棱镜膜为逆棱镜膜,则在粘贴设置的情况下,偏光片和棱镜膜之间的缺口非常小,从而显示面板和背光模组之间的缺口非常小,显示面板和背光模组之间多余的缺口可以省去,从而缩小了整个显示器件的厚度。
在本公开一些实施例中,所述棱镜膜与所述偏光片一体化结构。
在棱镜膜和偏光片一体制作的情况下,面板和背光模组基板上为一体制作,从而显示器件厚度大幅度缩小。
在本公开的一些实施例中,所述偏光片、棱镜膜和导光板为一体化结构,这样进一步减薄器件的厚度。
在本公开的一些实施例中,所述显示器件还包含第一基板和第二基板,以及第一基板和第二基板之间的显示层,所述背光模组设置在第二基板远离显示层的一侧,偏光片设置在第二基板和背光模组之间,所述第二基板、偏光片、棱镜膜和导光板为一体化结构。显示层具体可以是液晶层。
在本公开的一些实施例中,提供一种显示器件,仍然参照图3,包括反射 片304、导光板302、LED光源305、粘接剂306、棱镜膜303、下偏光片301、阵列基板307、液晶层308、彩膜基板309、上偏光片310。其中,棱镜膜303为逆棱镜膜,所述逆棱镜膜上设置有三角形状的棱镜单元3031,所述棱镜单元三角形棱镜尖部与所述导光板302的出光面相对设置。反射片304设置于导光板302的与出光面相对的一面,粘接剂306设置于棱镜膜303和导光板302出光面之间,位于非显示区域。下偏光片301与棱镜膜303一体制作,设置于棱镜膜303远离导光板302的一面,在下偏光片301远离棱镜膜303的一侧,依次设置有阵列基板307、液晶层308、彩膜基板309、上偏光片310。
具体的,导光板302上设置有网点,所述网点为设置于导光板302上的图形,用于使射入导光板的侧面的光线以60度以上的射出角向出光面方向射出。这样,向射出角大的侧面方向射出的光线经过位于导光板上表面的逆棱镜膜,转换为向正面方向聚光的光线。导光板图形的宽度无限制,因为图形不被识别,因而优选具有尽可能窄的宽度,为了光射出,所述图形油墨图案、V形图案、U形图案、球形图案等。
具体的,导光板302为玻璃材料。
具体的,参照图5,粘接剂103在俯视图中大体上为矩形,粘接剂103在导光板102入光侧设置有缺口,所述缺口与LED光源105的位置相对应。
导光板与面板贴合或连为一体时,与导光板和面板分离时相比,支撑机械强度提高,因此能够更加减少导光板和面板各自的厚度。粘接剂的厚度应该优选大于5μm而小于3000μm。粘接剂的厚度大于5μm时形成空气层,因此能够维持不同导光板折射率差异下的导光功能。小于5um时,存在因光线的波动性质而导致导光板导光功能受到损失的问题。厚度大于3000um时,不能够满足减少厚度的需求。更优选粘接剂的厚度大于100um小于1000um,能够不影响导光板的导光功能、也能满足显示器件薄化的需求、还能避免逆棱镜膜的顶部触及导光板而造成导光板磨损。
从上面所述可以看出,本公开提供的背光模组和显示器件,将棱镜膜设置在导光板出光面,从而棱镜膜和导光板之间能够恰好留出避免棱镜单元剐蹭导光板所必要的缺口,无需留出多余的缺口,进而使得背光模组的厚度降低,从而显示器件的整体厚度缩小。本公开实施例提供的显示器件,将棱镜膜和下偏光片一体制作,从而显示面板基本上与背光模组一体制作,使得显示器件的厚 度进一步缩小。
应当理解,本说明书所描述的多个实施例仅用于说明和解释本公开,并不用于限定本公开。并且在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。
显然,本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样,倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内,则本公开也意图包含这些改动和变型在内。

Claims (20)

  1. 一种背光模组,包括导光板和棱镜膜,其中,所述棱镜膜设置于所述导光板的出光面。
  2. 根据权利要求1所述的背光模组,其中,所述棱镜膜通过粘接剂贴合在所述导光板的出光面。
  3. 根据权利要求2所述的背光模组,其中,所述粘接剂设置在所述导光板出光面的边缘。
  4. 根据权利要求2所述的背光模组,其中,所述粘接剂的厚度为5-3000微米。
  5. 根据权利要求4所述的背光模组,其中,所述粘接剂为:树脂粘接剂、硅胶粘接剂、橡胶粘接剂中的至少一种。
  6. 根据权利要求4所述的背光模组,其中,所述粘接剂的厚度为100-1000微米。
  7. 根据权利要求1所述的背光模组,其中,所述导光板与所述棱镜膜一体化结构。
  8. 根据权利要求1-6中任意一项所述的背光模组,其中,所述棱镜膜为逆棱镜膜,所述逆棱镜膜上设置有三角形状的棱镜单元,所述棱镜单元三角形棱镜尖部与所述导光板出光面相对设置;
    所述棱镜单元三角形棱镜尖部与所述导光板出光面之间存在缺口。
  9. 根据权利要求1-7中任意一项所述的背光模组,其中,所述导光板为玻璃材料。
  10. 根据权利要求2所述的背光模组,还包括具有光源的灯条,其中,所述粘接剂与所述灯条相对的位置具有缺口,所述缺口与所述光源位置对应。
  11. 根据权利要求8所述的背光模组,其中,所述导光板和逆棱镜膜之间设置有隔垫物。
  12. 根据权利要求11所述的背光模组,其中,所述隔垫物与所述导光板为一体结构。
  13. 根据权利要求12所述的背光模组,其中,所述隔垫物靠近所述逆棱镜膜的一侧设置涂覆有粘合涂层,以将所述隔垫物与所述逆棱镜膜粘合。
  14. 根据权利要求11所述的背光模组,其中,所述隔垫物体靠近所述逆棱镜膜和所述导光板的两侧分别涂覆由粘合涂层,以将所述隔垫物分别与所述逆棱镜膜和所述导光板粘合。
  15. 一种显示器件,包括一偏光片,还包括如权利要求1-14中任意一项所述的背光模组;其中,所述偏光片设置在所述棱镜膜的出光侧。
  16. 根据权利要求15所述的显示器件,其中,所述棱镜膜与所述偏光片一体化结构。
  17. 一种显示器件,包括一偏光片,还包括如权利要求7或9所述的背光模组;其中,所述偏光片设置在所述棱镜膜的出光侧。
  18. 根据权利要求17所述的显示器件,其中,所述偏光片、棱镜膜和导光板为一体化结构。
  19. 根据权利要求17所述的显示器件,还包含第一基板和第二基板,以及 第一基板和第二基板之间的显示层,所述背光模组设置在第二基板远离显示层的一侧,所述偏光片设置在第二基板和背光模组之间,所述第二基板、偏光片、棱镜膜和导光板为一体化结构。
  20. 一种移动终端,包括权利要求15或17所述的显示器件。
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