WO2021031394A1 - 背光模组、显示装置 - Google Patents

背光模组、显示装置 Download PDF

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Publication number
WO2021031394A1
WO2021031394A1 PCT/CN2019/117000 CN2019117000W WO2021031394A1 WO 2021031394 A1 WO2021031394 A1 WO 2021031394A1 CN 2019117000 W CN2019117000 W CN 2019117000W WO 2021031394 A1 WO2021031394 A1 WO 2021031394A1
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WO
WIPO (PCT)
Prior art keywords
backlight module
sheet
light
frame
shading
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/117000
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English (en)
French (fr)
Inventor
黎胜明
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Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Technology Co Ltd
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Publication date
Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US16/753,781 priority Critical patent/US10877207B1/en
Publication of WO2021031394A1 publication Critical patent/WO2021031394A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Definitions

  • the invention relates to the field of display technology, in particular to a backlight module and a display device.
  • the effective adhesion area of the shading tape at the abnormal structure (blind hole) of the backlight is small.
  • the shading adhesive is easy to separate and fall off, causing light leakage and foreign matter entry;
  • blind hole shading glue double-sided tape
  • the width of the glue iron adhering to the blind hole shading glue is usually only 0.2 mm -0.35mm, sometimes even no plastic frame is provided.
  • the width attached to the blind hole shading glue is only 0.1mm in the thickness of the iron frame.
  • the effective adhesion area of the shading tape to the plastic frame or iron frame is small. In the reliability test, the shading glue It is easy to separate and fall off, causing problems such as light leakage and foreign matter entry.
  • the present invention provides a backlight module and a display device.
  • liquid glue is used for the connection between the iron frame or the plastic frame and the brightness enhancement sheet, without considering the connection between the plastic frame and the brightness enhancement sheet.
  • the width or the width of the iron frame and the brightness enhancement sheet can effectively prevent the shading glue from falling off.
  • the present invention provides a backlight module, the frame body includes a frame surface and a connection part connected to the frame surface; a reflective sheet is arranged on the frame surface; a light guide plate is arranged On the reflective sheet; the optical film set is arranged on the light guide plate, the optical film set has a light-enhancing sheet; the top of the connecting portion is connected to the light-enhancing sheet through a plastic frame; the light-shielding sheet is arranged on On the optical film set; blind holes, which penetrate the light-shielding sheet from the frame surface; the connecting portion is provided on the peripheral side of the blind holes; a light-proof adhesive layer is provided on the plastic frame and the Between the gloss enhancement film.
  • the optical film set includes a reflective sheet, which is arranged on the iron frame; a light guide plate, which is arranged on the reflective sheet; a diffuser sheet, which is arranged on the light guide plate; The film is set on the diffusion film.
  • the opaque adhesive layer is a double-sided adhesive.
  • the color of the opaque adhesive layer includes one of black and gray.
  • the thickness of the opaque adhesive layer is 0.03 mm-0.1 mm.
  • the backlight module further includes a light-shielding enhancement layer, which is arranged on the upper surface or the lower surface of the light-enhancing sheet, and correspondingly located at the connection between the iron frame and the light-enhancing sheet.
  • the material used for the shading enhancement layer is black ink or shading black stripes.
  • the thickness of the shading enhancement layer is 0.02 mm-0.05 mm.
  • the present invention also provides a display device including the backlight module.
  • the display device further includes a display screen, the shading sheet in the backlight module is provided on one side of the display screen; a cover plate is provided on the display screen away from the display screen. One side of the backlight module; the blind hole penetrates from the backlight module to the surface of the cover plate.
  • the iron frame or the plastic frame and the light-enhancing sheet are connected by liquid glue, without considering the connection width of the plastic frame and the light-enhancing sheet or the difference between the iron frame and the light-enhancing sheet
  • the width can effectively prevent the light-shielding glue from falling off, thereby further preventing dust and other foreign objects from entering the backlight module, causing product defects; at the same time, add a layer of black ink or black bars at the junction of the plastic frame and the brightness enhancement sheet to further Increase the shading effect.
  • FIG. 1 is a structural diagram of a backlight module according to Embodiment 1 of the present invention.
  • FIG. 2 is a structural diagram of a display device according to Embodiment 1 of the present invention.
  • FIG. 3 is a structural diagram of a backlight module according to Embodiment 2 of the present invention.
  • FIG. 4 is a structural diagram of a display device according to Embodiment 2 of the present invention.
  • the backlight module of the present invention includes a frame 11, a reflective sheet 12, a light guide plate 13, an optical film group 14, a light shielding sheet 15, a blind hole 16, and an opaque adhesive layer 17.
  • the frame body 11 includes a frame surface 111 and a connecting portion 112 connected to the frame surface 111.
  • the frame body 11 is an iron frame.
  • the reflective sheet 12 is provided on the frame surface 111.
  • the light guide plate 13 is arranged on the reflective sheet 12.
  • the optical film set 14 is disposed on the light guide plate 13.
  • the optical film set 14 has a brightness enhancement sheet 142 and a diffusion sheet 141.
  • the diffusion sheet 141 is provided on the light guide plate 13, and the brightness enhancement sheet 142 is provided on the diffusion sheet 141.
  • the connecting portion 112 is bent from the frame surface 111 toward the brightness enhancement sheet 142, and the top of the connection portion 112 is connected to the brightness enhancement sheet 142 via a rubber frame 19.
  • the plastic frame 19 extends from the top of the connecting portion 112 along the connecting portion 112 to the frame surface 111.
  • the opaque adhesive layer 17 is disposed between the plastic frame 19 and the brightness enhancement sheet 142.
  • the impermeability of this embodiment uses liquid glue.
  • the color can be selected from black and gray.
  • the opaque adhesive layer 17 of other colors can also be selected.
  • the shading sheet 15 is provided on the optical film set 14; the blind hole 16 penetrates the shading sheet 15 from the frame surface 111; the connecting portion 112 is provided on the peripheral side of the blind hole 16.
  • the thickness of the opaque adhesive layer 17 in this embodiment is
  • the backlight module further includes a light-shielding enhancement layer 18, which is disposed on the upper surface of the light-enhancing sheet 142 and correspondingly located between the iron frame and the light-enhancing sheet.
  • the junction of the brightness enhancement sheet 142 is described.
  • the material used for the shading enhancement layer 18 is black ink or shading black stripes.
  • the thickness of the shading enhancement layer 18 is 0.02 mm-0.05mm.
  • the present invention also provides a display device 100 including the backlight module described in Embodiment 1.
  • the display device 100 further includes a display screen 2, a cover plate 3, and a camera 4.
  • the light-shielding sheet 15 in the backlight module is provided on one side of the display screen 2; the cover plate 3 is provided on the The side of the display screen 2 away from the backlight module; the blind hole 16 penetrates from the backlight module to the surface of the cover 3.
  • a camera 4 is installed in the blind hole 16
  • the difference between this embodiment and Embodiment 1 is that in order to enhance the shading effect of the connection between the plastic frame 19 and the light-enhancing sheet 142 and to increase the connection firmness of the plastic frame 19 and the light-enhancing sheet 142, the light-shielding
  • the reinforcing layer 18 is disposed on the lower surface of the brightness enhancement sheet 142 and correspondingly located at the connection between the iron frame and the brightness enhancement sheet 142, that is, is disposed between the lower surface of the brightness enhancement sheet 142 and the plastic frame 19.
  • the material used for the shading enhancement layer 18 is black ink or shading black stripes.
  • the thickness of the shading enhancement layer 18 is 0.02 mm-0.05mm.
  • the present invention also provides a display device 100 including the backlight module described in Embodiment 2.
  • the display device 100 further includes a display screen 2, a cover plate 3, and a camera 4.
  • the light-shielding sheet 15 in the backlight module is provided on one side of the display screen 2; the cover plate 3 is provided on the The side of the display screen 2 away from the backlight module; the blind hole 16 penetrates from the backlight module to the surface of the cover 3, and the camera 4 is installed in the blind hole 16.

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

Abstract

一种背光模组（1）、显示装置（100），背光模组（1）包括框体（11），包括一框面（111）和连接于框面（111）的连接部（112）；反射片（12），设于框面（111）上；导光板（13），设于反射片（12）上；光学膜片组（14），设于导光板（13）上，光学膜片组（14）具有一增光片（141）；连接部（112）的顶部通过一胶框（19）连接于增光片（141）上；遮光片（15），设于光学膜片组（14）上；盲孔（16），从框面（111）贯穿遮光片（15）；连接部（112）设于盲孔（16）的周侧；不透光胶层（17），设置在胶框（19）与增光片（141）之间。

Description

背光模组、显示装置 技术领域
本发明涉及显示技术领域，具体为一种背光模组、显示装置。
 背景技术
随着显示技术的发展，目前的显示装置，如手机设计中，对屏占比的要求越来越高，也就是显示装置的显示区的面积与非显示区的面积比越来越大，这就不可避免的应用到异形显示，而有些异形结构会设计成封闭型(圆形、矩形及 其他规则或不规则形状)或开放型(半圆形、矩形及其他规则或不规则形状)。
由于显示区的限制，背光异形结构（盲孔）处遮光胶带有效粘附面积较小，可靠性试验时，遮光胶易发生分离脱落，导致漏光、异物进入等问题；
为了遮光、防尘，现有设计在盲孔四周贴盲孔遮光胶（双面胶），由于盲孔处显示边框的尺寸限制，与盲孔遮光胶粘附的胶铁宽度通常只有0.2 mm -0.35mm，有时甚至不设置胶框，与盲孔遮光胶贴附的宽度只有铁框厚度0.1mm，遮光胶带与胶框或铁框有效粘附面积较小，可靠性试验时，遮光胶易发生分离脱落，导致漏光、异物进入等问题。
 技术问题
为解决上述技术问题：本发明提供一种背光模组、显示装置，通过重新设计遮光结构，在铁框或胶框与增光片的连接处采用液态胶连接，不用考虑胶框与增光片的连接宽度或者铁框与增光片的宽度，能够有效的防止遮光胶脱落。
 技术解决方案
解决上述问题的技术方案是：本发明提供一种背光模组，框体，包括一框面和连接于所述框面的连接部；反射片，设于所述框面上；导光板，设于反射片上；光学膜片组，设于所述导光板上，所述光学膜片组具有一增光片；所述连接部的顶部通过一胶框连接于所述增光片上；遮光片，设于所述光学膜片组上；盲孔，从所述框面贯穿所述遮光片；所述连接部设于所述盲孔的周侧；不透光胶层，设置在所述胶框与所述增光片之间。
在本发明一实施例中，所述光学膜片组包括反射片，设于所述铁框上；导光板，设于所述反射片上；扩散片，设于所述导光板上；所述增光片设于扩散片上。
在本发明一实施例中，所述不透光胶层为双面胶。
在本发明一实施例中，所述不透光胶层的颜色包括黑色、灰色中的一种。
在本发明一实施例中，所述不透光胶层的厚度为0.03 mm-0.1mm。
在本发明一实施例中，所述的背光模组还包括遮光增强层，设置在所述增光片的上表面或者下表面，且对应位于所述铁框与所述增光片的连接处。
在本发明一实施例中，所述遮光增强层所用材料为黑色油墨或者遮光黑条。
在本发明一实施例中，所述遮光增强层的厚度为0.02 mm-0.05mm。
本发明还提供了一种显示装置，包括所述的背光模组。
在本发明一实施例中，所述的显示装置还包括显示屏，所述背光模组中的所述遮光片设于所述显示屏的一面；盖板，设于所述显示屏远离所述背光模组的一面；所述盲孔从所述背光模组贯穿至所述盖板的表面。
 有益效果
本发明的背光模组、显示装置，通过重新设计遮光结构，在铁框或胶框与增光片的连接处采用液态胶连接，不用考虑胶框与增光片的连接宽度或者铁框与增光片的宽度，能够有效的防止遮光胶脱落的现象，从而进一步防止灰尘等异物进入背光模组中，造成产品不良；同时在胶框和增光片的连接处增加一层黑色油墨或者遮光黑条，以进一步增加遮光效果。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
下面结合附图和实施例对本发明作进一步解释。
图1是本发明实施例1的背光模组的结构图。
图2是本发明实施例1的显示装置的结构图。
图3是本发明实施例2的背光模组的结构图。
图4是本发明实施例2的显示装置的结构图。
附图标记：
100显示装置；
1背光模组；          2显示屏；
3盖板；              4摄像头；
11框体；            111框面；
112连接部；         12反射片；
13导光板；          14光学膜片组；
141扩散片；         142增光片；
15遮光片；          16盲孔；
17不透光胶层；      18遮光增强层；
19胶框。
 本发明的实施方式
以下实施例的说明是参考附加的图式，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「顶」、「底」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
实施例1
如图1所示，本发明的背光模组包括框体11、反射片12、导光板13、光学膜片组14、遮光片15、盲孔16、不透光胶层17。
所述框体11包括一框面111和连接于所述框面111的连接部112。本实施例中，所述框体11为铁框。
所述反射片12设于所述框面111上。所述导光板13设于所述反射片12上。
所述光学膜片组14设于所述导光板13上，本实施例中，所述光学膜片组14具有一增光片142和一扩散片141。所述扩散片141设于所述导光板13上，所述增光片142设于所述扩散片141上。所述连接部112从所述框面111向所述增光片142弯折，且所述连接部112的顶部通过一胶框19连接于所述增光片142上。为了增强遮光效果，所述胶框19从所述连接部112的顶部沿所述连接部112向所述框面111延伸。
本实施例中，所述不透光胶层17设置在所述胶框19与所述增光片142之间。为了改善现有胶框19的宽度较窄，普通双面胶难以裁剪成较为适合的宽度，使之方便地牢固地粘接在所述胶框19上，因此，本实施例的所述不透光胶层17采用液态胶。其颜色可选择黑色、灰色中的一种，当然也可以选择其他颜色的不透光胶层17。
所述遮光片15设于所述光学膜片组14上；所述盲孔16从所述框面111贯穿所述遮光片15；所述连接部112设于所述盲孔16的周侧。为了使得盲孔16处的不透光胶层17能够有效的粘接在所述胶框19和所述增光片142之间，本实施例中的所述不透光胶层17的厚度为
0.03 mm-0.1mm。
为了增强所述胶框19与增光片142连接处的遮光效果，所述的背光模组还包括遮光增强层18，设置在所述增光片142的上表面，且对应位于所述铁框与所述增光片142的连接处。所述遮光增强层18所用材料为黑色油墨或者遮光黑条。所述遮光增强层18的厚度为0.02 mm-0.05mm。
如图2所示，本发明还提供了一种显示装置100，包括实施例1所述的背光模组。所述的显示装置100还包括显示屏2、盖板3、摄像头4，所述背光模组中的所述遮光片15设于所述显示屏2的一面；所述盖板3设于所述显示屏2远离所述背光模组的一面；所述盲孔16从所述背光模组贯穿至所述盖板3的表面。所述盲孔16内安装摄像头4
实施例2
如图3所示，本实施例与实施例1的区别在于，为了增强所述胶框19与增光片142连接处的遮光效果以及增加胶框19与增光片142的连接牢固度，所述遮光增强层18设置在所述增光片142的下表面，且对应位于所述铁框与所述增光片142的连接处，即设置在增光片142的下表面与所述胶框19之间。所述遮光增强层18所用材料为黑色油墨或者遮光黑条。所述遮光增强层18的厚度为0.02 mm-0.05mm。
如图4所示，本发明还提供了一种显示装置100，包括实施例2所述的背光模组。所述的显示装置100还包括显示屏2、盖板3、摄像头4，所述背光模组中的所述遮光片15设于所述显示屏2的一面；所述盖板3设于所述显示屏2远离所述背光模组的一面；所述盲孔16从所述背光模组贯穿至所述盖板3的表面，所述盲孔16内安装摄像头4。
以上仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种背光模组，其包括
    框体，包括一框面和连接于所述框面的连接部；
    反射片，设于所述框面上；
    导光板，设于反射片上；
    光学膜片组，设于所述导光板上，所述光学膜片组具有一增光片；所述连接部的顶部通过一胶框连接于所述增光片上；
    遮光片，设于所述光学膜片组上；
    盲孔，从所述框面贯穿所述遮光片；所述连接部设于所述盲孔的周侧；
    不透光胶层，设置在所述胶框与所述增光片之间。
  2. 根据权利要求1所述的背光模组，其中，所述光学膜片组还包括
    扩散片，设于所述导光板上；
    所述增光片设于扩散片上。
  3. 根据权利要求1所述的背光模组，其中，所述不透光胶层为液态胶。
  4. 根据权利要求3所述的背光模组，其中，所述不透光胶层的颜色包括黑色、灰色中的一种。
  5. 根据权利要求1所述的背光模组，其中，所述不透光胶层的厚度为0.03 mm-0.1mm。
  6. 根据权利要求1所述的背光模组，其还包括遮光增强层，设置在所述增光片的上表面或者下表面，且对应位于所述铁框与所述增光片的连接处。
  7. 根据权利要求6所述的背光模组，其特征在于，所述遮光增强层所用材料为黑色油墨或者遮光黑条。
  8. 根据权利要求6所述的背光模组，其中，所述遮光增强层的厚度为0.02 mm-0.05mm。
  9. 一种显示装置，其包括如权利要求1所述的背光模组。
  10. 根据权利要求9所述的显示装置，其还包括
    显示屏，所述背光模组中的所述遮光片设于所述显示屏的一面；
    盖板，设于所述显示屏远离所述背光模组的一面；
    所述盲孔从所述背光模组贯穿至所述盖板的表面。
PCT/CN2019/117000 2019-08-22 2019-11-11 背光模组、显示装置 Ceased WO2021031394A1 (zh)

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