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WO2014173032A1 - 液晶显示模块及其封装结构 - Google Patents

液晶显示模块及其封装结构 Download PDF

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Publication number
WO2014173032A1
WO2014173032A1 PCT/CN2013/080746 CN2013080746W WO2014173032A1 WO 2014173032 A1 WO2014173032 A1 WO 2014173032A1 CN 2013080746 W CN2013080746 W CN 2013080746W WO 2014173032 A1 WO2014173032 A1 WO 2014173032A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
diffuse reflection
crystal display
module
display module
Prior art date
Application number
PCT/CN2013/080746
Other languages
English (en)
French (fr)
Inventor
李敬石
Original Assignee
北京京东方光电科技有限公司
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Filing date
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Application filed by 北京京东方光电科技有限公司 filed Critical 北京京东方光电科技有限公司
Publication of WO2014173032A1 publication Critical patent/WO2014173032A1/zh

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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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means 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
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/13332—Front frames

Definitions

  • Liquid crystal display module and package structure thereof Liquid crystal display module and package structure thereof
  • Embodiments of the present invention relate to a liquid crystal display module and a package structure thereof.
  • CTR cathode ray tube
  • LCD liquid crystal displays Due to its small size and low power consumption, low radiation, flat right-angle display, and image stabilization and flicker, LCD has occupied a considerable market and gradually replaced CRT. The mainstream position.
  • the most important part of the liquid crystal display is a liquid crystal display module, which includes a backlight module, a display panel, and a package structure encapsulating the liquid crystal display module.
  • the backlight module mainly comprises: a light source (point light source or line light source), a light guide plate, a reflection sheet and a prism sheet. After the concentrated light emitted from the light source enters the light guide plate, it is more uniformly emitted from the light exit surface of the light guide plate by the reflection and reflection of the light guide plate.
  • the prism sheet on the light-emitting surface of the light guide plate further spreads the emitted light uniformly.
  • a reflection sheet is usually provided at the bottom of the surface opposite to the light-emitting surface of the light guide plate to improve the utilization of light emitted from the light source.
  • Embodiments of the present invention provide a liquid crystal display module and a package structure thereof, which can improve the utilization of light emitted by a backlight and effectively prevent the generation of bright lines on the display panel.
  • a package structure of a liquid crystal display module includes a back plate carrying the liquid crystal display module, an inner frame surrounding the liquid crystal display module, and the inner frame and the rear
  • the backplane collectively clamps and fixes the front bezel of the liquid crystal display module
  • the inner frame includes a diffusing reflection on the inner side wall of the inner frame for illuminating the inner side wall of the inner frame Diffuse reflection module.
  • the surface of the diffuse reflection module is uneven.
  • the 3B radiation module is disposed on the prism sheet and the light guide of the inner frame near the backlight module.
  • the diffuse reflection module includes a plurality of diffuse reflection sub-modules, and the diffuse reflection sub-module has a polygonal or semi-elliptical cross section.
  • the diffuse reflection sub-modules are identical in shape and of the same size and arranged in a matrix to form the 3 ⁇ 4 radiation module.
  • the diffuse reflection sub-modules are different in shape, unequal in size, and arranged in a misalignment to form the
  • the diffuse reflection sub-modules are identical in shape, unequal in size, arranged in a misaligned manner to form the diffuse reflection module; or the diffuse reflection sub-modules are identical in shape, equal in size, and arranged in a dislocation to form the diffuse Reflective module.
  • the diffuse reflection sub-module is in the form of particles, strips or columns.
  • the diffuse reflection sub-module has an acute-angled triangle or a right-angled triangle, and the smallest angle among the triangles is away from the inner sidewall of the inner frame.
  • the diffuse reflection module is made of a resin.
  • the diffuse reflection module is integrally formed with the inner frame.
  • a liquid crystal display module comprising the package structure of the liquid crystal display module described above.
  • FIG. 1 is a partial cross-sectional view showing a package structure of a liquid crystal display module according to an embodiment of the present invention
  • FIG. 2 is a partial cross-sectional view showing a package structure of a liquid crystal display module in the prior art
  • FIG. 4 is a partial cross-sectional view of a package structure of a liquid crystal display module according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of optical path reflection of a diffuse reflection sub-module according to an embodiment of the present invention.
  • 1 a back plate (outer frame); 2 - inner frame; 21 - diffuse reflection module;
  • the inventors have found that the light emitted by the backlight source may also be emitted from the side of the light guide plate or the prism sheet, and may be incident on the inner side wall of the package structure surrounding the light guide plate or the prism sheet, and after being reflected by the inner side wall, the light guide plate may not be re-entered or The inside of the prism sheet causes waste of light; at the same time, the light reflected by the inner side wall may also cause bright lines on the display panel, which reduces the user experience.
  • Embodiments of the present invention provide a package structure of a liquid crystal display module.
  • the package structure of the liquid crystal display module includes a back plate 1 supporting the liquid crystal display module, and an inner frame 2 surrounding the liquid crystal display module, and the inner frame 2 and the back plate 1 are common.
  • the front bezel 6 of the liquid crystal display module is clamped and fixed.
  • Inner frame 2 acts as a buffer.
  • the front bezel 6 may be in the form as shown in Fig. 1, or may be in other forms such as a narrow bezel.
  • the inner frame 2 includes a diffuse reflection module 21 disposed on an inner sidewall of the inner frame 2 for illuminating the inner side wall of the inner frame 2 .
  • the surface of the module 21 is uneven.
  • the two beams reflected by the reflection sheet 3 are not able to enter the light guide plate 4 and the prism sheet 5, but leak from the side surface of the reflection sheet 3, and are incident on the inner side wall of the inner frame 2.
  • the inner frame 2 is usually made of a material such as resin which is opaque and has a smooth surface, the two beams of light incident on the inner side wall of the inner frame 2 are specularly reflected by the inner side wall of the inner frame 2, so that the light directly passes through the light guide plate.
  • the prism sheet 5 is incident on the liquid crystal panel, causing direct injection onto the liquid crystal panel, so that the light distribution on the liquid crystal panel is uneven, bright lines appear during operation, and the utilization of light is reduced, so that the power consumption of the liquid crystal panel is reduced. Larger, reducing the user experience.
  • a light-shielding film is added between the prism sheet 5 and the liquid crystal panel, and the light-shielding film is a frame type, which is located in the projection of the front bezel 6, and is usually made of a dark opaque material, which prevents the like.
  • the light reflected by the front bezel 2 directly hits the liquid crystal panel, reducing the possibility of bright lines appearing when the liquid crystal panel is in operation.
  • this solution requires an additional component in the liquid crystal display module, which increases the manufacturing cost and the manufacturing difficulty of the liquid crystal display module, and is also disadvantageous for the thickness reduction of the liquid crystal display module.
  • the inner side wall of the inner frame 2 is provided with a diffuse reflection module 21 that diffuses and reflects light irradiated onto the inner side wall of the inner frame 2.
  • the surface of the diffuse reflection module 21 is uneven, so that light incident on the surface of the diffuse reflection module 21 is diffusely reflected, so that part of the light is reflected back on the reflection sheet 3, so that the leaked light can be It is used again, effectively improving the utilization of light, reducing the possibility of bright lines appearing when the liquid crystal panel is working, and reducing the production cost and difficulty of the liquid crystal display module, which is more conducive to popularization.
  • the diffuse reflection module 21 is disposed on the inner side wall of the inner frame 2 adjacent to the prism sheet 5 and the light guide plate 4 of the backlight module. Since the light is most likely to be incident on the inner frame 2 after the light is leaked from the light guide plate 4, in order to reduce the manufacturing cost of the diffuse reflection module 21, only the prism sheet 5 and the guide of the inner frame 2 close to the backlight module may be used.
  • the inner side wall of the light panel 4 is incident on the 3 ⁇ 4 module.
  • the diffuse reflection module 21 may include a plurality of relatively regular shaped diffuse reflection sub-modules 211, and the cross-section of the diffuse reflection sub-module 211 may be a polygonal or semi-elliptical shape.
  • embodiments of the invention are not limited thereto.
  • the diffuse reflection sub-modules 211 may be identical in shape, of the same size, arranged in a matrix to form the diffuse reflection module.
  • the diffuse reflection sub-module 211 may also be different in shape, unequal in size, and arranged in a misaligned manner to form the diffuse reflection module.
  • the diffuse reflection sub-module 211 may be identical in shape and unequal in size, and arranged in a misaligned manner to form a The diffuse reflection module; or, the diffuse reflection sub-modules 211 are identical in shape, equal in size, arranged in a misaligned manner to form the diffuse reflection module, and the like.
  • the diffuse reflection sub-module 211 may be in the form of a pellet, a strip or a column, as long as the surface of the diffuse reflection module 21 is uneven.
  • the embodiment of the present invention does not limit the shape, size, arrangement, and the like of the diffuse reflection sub-module 211. As long as the surface of the diffuse reflection module 21 is uneven, it is within the scope of the present invention.
  • the cross section of the diffuse reflection sub-module 211 may be an acute triangle or a right triangle, and the angle with the smallest angle among the triangles is away from the inner sidewall of the inner frame 2.
  • FIG. 5 it is a reflected light path diagram of the diffuse reflection sub-module 211 having a right-angled triangular cross section.
  • the light incident on the surface of the diffuse reflection sub-module 211 is reflected by the two adjacent diffuse reflection sub-modules 211, and finally reflected back to the backlight module in a small angle with the incident light. . Due to the small angle, these lights are usually reflected back on the reflection sheet 3, making these The light that is shot back can be used again, thereby improving the utilization of light, preventing the appearance of bright lines on the display panel, indirectly reducing power consumption, and improving the user experience.
  • the diffuse reflection module 21 composed of the 3 ⁇ 4 emitter module 211 having a right-angled triangle cross section can even reflect all the light incident on the surface thereof to the reflection sheet 3 in the backlight module.
  • the diffuse reflection module 21 is made of a resin, and the diffuse reflection module 21 may be disposed on the inner side wall of the inner frame 2 by a plurality of fixing methods, such as pasting, after the completion of the manufacturing, or Box 2 - body molding.
  • a package structure of a liquid crystal display module includes an inner frame disposed on an inner side wall of the inner frame and illuminating the inner side wall of the inner frame;
  • the surface of the diffuse reflection module is uneven, and the light that is incident on the surface of the diffuse reflection module is diffusely reflected, so that the light that is incident on the diffuse reflection surface is reflected back into the light guide plate of the backlight module, so that the reflected light can be returned. Used again. This can improve the utilization of light, prevent the appearance of bright lines on the display panel, and indirectly reduce power consumption and improve the user experience.
  • the embodiment of the invention further provides a liquid crystal display module comprising the package structure of the liquid crystal display module.

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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)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种液晶显示模块及其封装结构，包括承载液晶显示模块的后背板（1）、包围液晶显示模块起缓冲保护作用的内框（2）、与内框（2）和后背板（1）共同夹紧固定液晶显示模块的前边框（6），内框（2）包括设置于内框（2）内侧壁上的、对照射到内框（2）的内侧壁上的光起漫反射作用的漫反射模块（21），液晶显示模块能够提高背光源发出的光的利用率，有效防止显示面板上亮线的产生。

Description

液晶显示模块及其封装结构 技术领域
本发明的实施例涉及一种液晶显示模块及其封装结构。
背景技术
随着科学技术的发展和人们要求的不断提高， 人们对于原来传统的阴极 射线管（CRT )显示器的体积大、 重量大和能量损耗大的缺点越来越不满意。 特别是在便携型、 小型化和低耗电量的应用中， 人们期望着体积小、 重量轻 和低耗电量的显示器的出现。 在这种需求的推动下， 液晶显示器（LCD )应 运而生。 由于 LCD轻薄体积小且具有低耗电量、 低辐射量、 平面直角显示 以及影像稳定不闪烁等多方面的优势， 在近年来价格不断下跌的吸引下， 占 领了相当大的市场， 逐渐取代 CRT的主流地位。
液晶显示器最重要的部分是液晶显示模块， 液晶显示模块包括背光模 组、 显示面板以及封装液晶显示模块的封装结构。 背光模组主要包括： 光源 (点光源或线光源）、导光板、反射片和棱镜片。 光源发出的较为集中的光进 入导光板后， 经过导光板的折射、 反射等作用， 较为均匀地从导光板的出光 面射出。 导光板的出光面上的棱镜片进一步地将出射的光均匀地扩散开来。 另外， 为了防止光从导光板的出光面相对的面射出， 通常还在导光板的出光 面相对的面的底部设置反射片， 以提高对光源发出的光的利用率。
发明内容
本发明的实施例提供一种液晶显示模块及其封装结构， 该封装结构能够 提高背光源发出的光的利用率， 有效防止显示面板上亮线的产生。
根据本发明的第一方面， 提供一种液晶显示模块的封装结构， 其包括承 载所述液晶显示模块的后背板、 包围所述液晶显示模块的内框、 与所述内框 和所述后背板共同夹紧固定所述液晶显示模块的前边框， 所述内框包括设置 于所述内框的内侧壁上的、 对照射到所述内框的内侧壁上的光起漫反射作用 的漫反射模块。
例如， 所述漫反射模块的表面凹凸不平。
例如， 所述 ¾ 射模块设置于所述内框的靠近背光模组的棱镜片和导光 板的内侧壁上。 所述漫反射模块包括多个漫反射子模块， 所述漫反射子模块 的截面为多边形或半橢圓形。
例如， 所述漫反射子模块形状相同、 大小相同， 呈矩阵形式排列以形成 所述 ¾ 射模块。
例如， 所述漫反射子模块形状不同、 大小不等， 呈错位排列以形成所述
¾ 射模块； 或所述漫反射子模块形状相同、 大小不等， 呈错位排列以形成 所述漫反射模块； 或所述漫反射子模块形状相同、 大小相等， 呈错位排列以 形成所述漫反射模块。
例如， 所述漫反射子模块为颗粒状、 条状或柱状。
例如， 所述漫反射子模块的截面为锐角三角形或直角三角形， 且所述三 角形中夹角最小的角远离所述内框的内侧壁。
例如， 所述漫反射模块由树脂制成。
例如， 所述漫反射模块与所述内框一体成型。
根据本发明的第二方面， 提供一种液晶显示模块， 其包括上述的液晶显 示模块的封装结构。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实 施例描述中所需要使用的附图作筒单地介绍， 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。
图 1为本发明实施例中液晶显示模块的封装结构的部分截面示意图一； 图 2为现有技术中液晶显示模块的封装结构的部分截面示意图； 图 3为本发明实施例中液晶显示模块的封装结构的部分截面示意图二； 图 4为本发明实施例中液晶显示模块的封装结构的部分截面示意图三； 图 5为本发明实施例中漫反射子模块的光路反射示意图。
附图标记说明：
1一后背板（外框）； 2—内框； 21—漫反射模块；
211— ¾ 射子模块； 3—反射片； 4一导光板；
5—棱镜片。 6—前边框 具体实施方式 下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行 清楚、 完整地描述， 显然， 所描述的实施例仅是本发明示例性的一部分实施 例， 而不是全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在 无需创造性劳动前提下可以容易地获得许多其他实施例或变形， 而这些都属 于本发明保护的范围。
发明人发现，背光光源发出的光，还可能从导光板或棱镜片的侧面射出， 射至封装结构的包围导光板或棱镜片的内侧壁上， 被内侧壁反射后， 无法再 进入导光板或棱镜片内部，造成了光的浪费； 同时， 这些被内侧壁反射的光， 还可能在显示面板上造成亮线， 降低了用户的使用体验。
本发明实施例提供一种液晶显示模块的封装结构。 如图 1所示， 该液晶 显示模块的封装结构包括承载所述液晶显示模块的后背板 1、 包围所述液晶 显示模块内框 2、 与所述内框 2和所述后背板 1共同夹紧固定所述液晶显示 模块的前边框 6。 内框 2起緩沖保护作用。 前边框 6可以是如图 1中所示意 显示的形式， 也可以是其它形式例如窄边框。
如图 1所示， 所述内框 2包括设置于所述内框 2的内侧壁上的、 对照射 到所述内框 2的内侧壁上的光起 ¾ 射作用的漫反射模块 21 ,所述 ¾ 射模 块 21的表面凹凸不平。
图 2为一种现有的液晶显示模块的封装结构的结构示意图。 由图 2中可 以看到， 两束由反射片 3反射后的光， 没能够进入到导光板 4和棱镜片 5当 中， 而是自反射片 3的侧面漏出， 射至内框 2的内侧壁上， 由于内框 2通常 是采用树脂等不透明且表面光滑的材料制成， 射至内框 2的内侧壁上的两束 光被内框 2的内侧壁镜面反射， 使得光直接透过导光板 4或棱镜片 5射至液 晶面板上， 导致直接射至液晶面板上， 使得液晶面板上的光线分布不匀、 工 作时出现亮线， 并且降低了对光的利用率， 使得液晶面板的功耗较大， 降低 了用户的使用体验。
通常， 为了解决这一问题， 在棱镜片 5和液晶面板之间增加遮光胶片， 遮光胶片为框型， 位于前边框 6的投影内， 通常由深色不透明的材料制成， 可防止类似图 2中由前边框 2反射出去的光线直接射到液晶面板上， 减少液 晶面板工作时亮线出现的可能性。 但是这一方案由于需要在液晶显示模块内 增加额外的部件， 提高了液晶显示模块的制作成本和制作难度， 同时也不利 于液晶显示模块的厚度的减小。 而在本发明实施例中， 所述内框 2的内侧壁上设置有对照射到所述内框 2的内侧壁上的光起漫反射作用的漫反射模块 21。 如图 3所示， 所述漫反射 模块 21的表面凹凸不平， 可使得射到漫反射模块 21表面的光发生漫反射， 使得部分光 射回反射片 3上，从而使得这部分漏出的光可以再次被利用， 有效地提高了光的利用率， 降低了液晶面板工作时亮线出现的可能性， 同时 降低了液晶显示模块的生产成本和难度， 更利于推广使用。
根据本发明的实施例，所述漫反射模块 21设置于所述内框 2的靠近背光 模组的棱镜片 5和导光板 4的内侧壁上。 由于此处为光自导光板 4漏出后最 可能射至内框 2的具体地方，所以为了降低漫反射模块 21的制作成本，可以 只在内框 2的靠近背光模组的棱镜片 5和导光板 4的内侧壁上射至¾ 射模 块 21。
进一步地， 出于降低加工工艺等考虑，所述漫反射模块 21可以包括多个 形状较为规整的漫反射子模块 211 , 所述漫反射子模块 211的截面可为多边 形或半橢圓形等形状， 但是本发明实施例不限于此。
例如， 漫反射子模块 211可以形状相同、 大小相同， 呈矩阵形式排列以 形成所述漫反射模块。
类似地， 漫反射子模块 211也可以形状不同、 大小不等， 呈错位排列以 形成所述漫反射模块； 或， 所述漫反射子模块 211形状相同、 大小不等， 呈 错位排列以形成所述漫反射模块； 或， 所述漫反射子模块 211形状相同、 大 小相等， 呈错位排列形成所述漫反射模块， 等等。
进一步地， 所述漫反射子模块 211可以为颗粒状、 条状或柱状等形式， 只要能够使得漫反射模块 21的表面凹凸不平即可。
需要说明的是， 本发明实施例对漫反射子模块 211的形状、 大小、 排列 等样式不进行限制，只要能使得漫反射模块 21的表面凹凸不平，都属于本发 明要求保护的范围。
如图 4所示， 根据本发明的实施例， 所述漫反射子模块 211的截面可以 为锐角三角形或直角三角形， 并且所述三角形中夹角最小的角远离所述内框 2的内侧壁。 如图 5所示， 为截面为直角三角形的漫反射子模块 211的反射 光路图。 由图中可看出， 射至漫反射子模块 211表面的光在经过两个相邻的 漫反射子模块 211的反射后， 最终以与入射光线具有小夹角的形式反射回背 光模组中。 由于夹角较小， 这些光通常都可反射回反射片 3上， 使得这些反 射回去的光可以再次被利用， 从而提高了光的利用率， 防止了显示面板上亮 线的出现， 同时间接地降低了功耗， 提高了用户的使用体验。
进一步地， 若经过严格的计算设计， 该种由截面为直角三角形的 ¾ 射 子模块 211构成的漫反射模块 21甚至可以将射至其表面的光全部反射回背光 模组中的反射片 3上。
通常， 所述漫反射模块 21由树脂制成， 所述漫反射模块 21可以在制作 完成后， 通过粘贴等多种固定方式设置于所述内框 2的内侧壁上， 也可与所 述内框 2—体成型。
根据本发明的实施例提供的液晶显示模块的封装结构， 其内框包括设置 于所述内框内侧壁上的、 对照射到所述内框的内侧壁上的光起; ¾ ^射作用的
¾ 射模块。 所述漫反射模块的表面凹凸不平， 可对射至漫反射模块的表面 的光进行漫反射， 使得射至漫反射表面的光反射回背光模组的导光板中， 使 得这些反射回去的光可以再次被利用。 这样可以提高光的利用率， 防止显示 面板上亮线的出现， 同时间接地降低了功耗， 提高了用户的使用体验。
本发明实施例还提供一种液晶显示模块， 其包括上述液晶显示模块的封 装结构。
以上所述， 仅为本发明的示例性实施例， 但本发明的保护范围并不局限 于此。

Claims

权利要求书
1、 一种液晶显示模块的封装结构， 包括承载所述液晶显示模块的后背 板、 包围所述液晶显示模块的内框、 与所述内框和所述后背板共同夹紧固定 所述液晶显示模块的前边框， 其中，
所述内框包括设置于所述内框内侧壁上的、 对照射到所述内框的内侧壁 上的光起漫反射作用的漫反射模块。
2、 根据权利要求 1 所述的液晶显示模块的封装结构， 其中所述漫反射 模块的表面凹凸不平。
3、 根据权利要求 1或 2所述的液晶显示模块的封装结构， 其中所述漫 反射模块设置于所述内框的靠近背光模组的棱镜片和导光板的内侧壁上。
4、 根据权利要求 1-3任一项所述的液晶显示模块的封装结构， 其中， 所述漫反射模块包括多个漫反射子模块， 所述漫反射子模块的截面为多 边形或半橢圓形。
5、 根据权利要求 4所述的液晶显示模块的封装结构， 其中，
所述漫反射子模块形状相同、 大小相同， 呈矩阵形式排列形成所述漫反 射模块。
6、 根据权利要求 4所述的液晶显示模块的封装结构， 其中，
所述漫反射子模块形状不同、 大小不等， 呈错位排列形成所述漫反射模 块； 或
所述漫反射子模块形状相同、 大小不等， 呈错位排列形成所述漫反射模 块； 或
所述漫反射子模块形状相同、 大小相等， 呈错位排列形成所述漫反射模 块。
7、 根据权利要求 4-6任一项所述的液晶显示模块的封装结构， 其中， 所述漫反射子模块为颗粒状、 条状或柱状。
8、 根据权利要求 7所述的液晶显示模块的封装结构， 其中，
所述漫反射子模块的截面为锐角三角形或直角三角形， 且所述三角形中 夹角最小的角远离所述内框的内侧壁。
9、 根据权利要求 1-8任一项所述的液晶显示模块的封装结构， 其中， 所述漫反射模块由树脂制成。
10、 根据权利要求 1-9任一项所述的液晶显示模块的封装结构， 其中， 所述漫反射模块与所述内框一体成型。
11、 一种液晶显示模块， 包括如权利要求 1-10任一项所述的液晶显示模 块的封装结构。
PCT/CN2013/080746 2013-04-22 2013-08-02 液晶显示模块及其封装结构 WO2014173032A1 (zh)

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CN1605908A (zh) * 2003-10-11 2005-04-13 三星电子株式会社 背光组件和具有该背光组件的显示装置
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