WO2021232625A1 - 一种超窄边框液晶背光结构及组装方法 - Google Patents

一种超窄边框液晶背光结构及组装方法 Download PDF

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WO2021232625A1
WO2021232625A1 PCT/CN2020/114727 CN2020114727W WO2021232625A1 WO 2021232625 A1 WO2021232625 A1 WO 2021232625A1 CN 2020114727 W CN2020114727 W CN 2020114727W WO 2021232625 A1 WO2021232625 A1 WO 2021232625A1
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guide plate
light guide
light source
light
ultra
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PCT/CN2020/114727
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English (en)
French (fr)
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石东
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苏州桐力光电股份有限公司
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    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • 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
    • G02B6/0081—Mechanical 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
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package

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  • the invention belongs to the technical field of liquid crystal frames, and in particular relates to an ultra-narrow frame liquid crystal backlight structure and an assembly method.
  • the ultra-narrow bezel is one of the hotspots currently discussed; in general, liquid crystal products support and protect their internal liquid crystal structure, electronics, etc. through the outer frame structure.
  • the current backlight modules of liquid crystal products generally use The "side-in backlight strip + light guide plate” solution (as shown in Figure 1), which leads to the need to install backlight strips on the edge of the LCD cell, so the width of the frame is increased, and it is difficult to achieve an extremely narrow frame, which affects the product Aesthetics.
  • the purpose of the present invention is to provide an ultra-narrow frame liquid crystal backlight structure.
  • an ultra-narrow frame liquid crystal backlight structure including a light guide plate and a light source, the light source is installed on the back of the light guide plate, and the back of the light guide plate
  • films There are two kinds of films, namely an anti-reflection film and a reflection film; the anti-reflection film is arranged on the back of the light guide plate in the area where the light source is installed, and the reflection film is arranged on the back of the light guide plate except for the area where the light source is installed.
  • the side surface of the light guide plate is also provided with a reflective film.
  • a transflective film is provided on the front surface of the light guide plate.
  • the "transmission/reflection" ratio of the transflective film is proportional to the horizontal distance between the light source and the transflective film.
  • an atomization layer is provided on the front side of the light guide plate.
  • the present invention also provides a method for assembling an ultra-narrow frame liquid crystal backlight structure, and the specific steps are as follows:
  • Step 1 First determine the specific installation location of the light source on the back of the light guide plate, and coat this part with an anti-reflection coating, and then install the light source on the back of the light guide plate where the anti-reflection coating is coated;
  • Step 2 Under the premise of step 1, the remaining areas on the back of the light guide plate are coated with a reflective film; at the same time, a reflective film is also plated on the side of the light guide plate;
  • Step 3 Coating a transflective film on the front of the light guide plate, and the “transmission/reflection” ratio of the transflective film is determined according to the specific position of the light source on the back of the light guide plate;
  • step 3 turn on the light source located on the back of the light guide plate, and use the center point of the light source as the reference object, on the front of the light guide plate from the position closest to the center point of the light source to the position farthest from the center point of the light source.
  • the semi-transmissive and semi-reflective films are sequentially plated, and the "transmission/reflection" ratio of the semi-transparent and semi-reflective films is also increased with the increase of the distance.
  • the front surface of the light guide plate can also be atomized.
  • the present invention has the following advantages compared with the prior art:
  • An ultra-narrow bezel LCD backlight structure and assembly method designed in this scheme eliminates the side structure, and the entire display product can achieve an extremely narrow bezel design.
  • the light source is set on the back of the light guide plate and passed on the back of the light guide.
  • Figure 1 is a schematic diagram of the "side-in" structure of a traditional backlight module.
  • FIG. 2 is a schematic diagram of the structure of the backlight module according to the first embodiment.
  • Fig. 3 is a schematic diagram of the distribution of the semi-transmitting and semi-reflecting film of the embodiment.
  • FIG. 4 is a schematic diagram of the structure of the backlight module of the second embodiment.
  • An ultra-narrow frame liquid crystal backlight structure comprising a light guide plate 1 and a light source 2.
  • the light source 2 is installed on the back of the light guide plate 1, and the back of the light guide plate 1 is provided with two kinds of films, which are respectively an antireflection film 3 and reflective film 4; the anti-reflection film 3 is provided on the back of the light guide plate 1 in the area where the light source 2 is installed, and the reflective film 4 is provided on the back of the light guide plate 1 except for the area where the light source 2 is installed;
  • the front surface of the light guide plate 1 is provided with a transflective film 5; the "transmission/reflection" ratio of the transflective film 5 is proportional to the horizontal distance between the light source 2 and the transflective film 5 ;
  • a method for assembling an ultra-narrow bezel liquid crystal backlight structure includes three steps: Step 1: First determine the specific installation location of the light source 2 on the back of the light guide plate 1, plate an anti-reflection film 3 on this location, and then install the light source 2 Install at the position where the anti-reflection coating 3 is plated on the back of the light guide plate 1; Step 2: Under the premise of step 1, coat the remaining area on the back of the light guide plate 1 with a reflective film 4, and also plate the side of the light guide plate 1 A layer of reflective film 4; Step 3: Coating a transflective film on the front of the light guide plate 1, and the “transmission/reflection” ratio of the transflective film 5 is based on the specific installation of the light source 2 on the back of the light guide plate 1.
  • the location is determined; specifically, turn on the light source 2 on the back of the light guide plate 1, and use the center point of the light source 2 as the reference object.
  • On the front of the light guide plate 1, from the closest position to the center point of the light source 2 to the farthest from the center point of the light source 2 The semi-transmissive and semi-reflective film 5 is sequentially plated at the positions, and the “transmission/reflection” ratio of the semi-transparent and semi-reflective film 5 also increases with the increase of the distance.
  • the assembly area of the light source 2 on the back of the light guide plate 1 is coated with an anti-reflection coating 3 to maximize the light transmittance of the light source 2; Yes, the side of the light guide plate 1 is also coated with a reflective film 4 to prevent the backlight from leaking out.
  • the front surface of the light guide plate 1 is coated with a transflective film, so that part of the light entering the light guide plate 1 is transmitted and partly reflected.
  • the backlight can be uniformly transmitted from the front of the light guide plate 1 to complete the backlight module function.
  • the coating on the front of the light guide plate 1 can be divided into areas, each area has a different "transmission/reflection" ratio, such as the area closer to the backlight source 2 "transmission/reflection"
  • the position, shape, number of regions, shape of each region, etc. of the backlight source 2 are only illustrative in FIG. 3 and can be freely adjusted according to actual projects.
  • An ultra-narrow frame liquid crystal backlight structure comprising a light guide plate 1 and a light source 2.
  • the light source 2 is installed on the back of the light guide plate 1, and the back of the light guide plate 1 is provided with two kinds of films, respectively, an antireflection film 3 and reflective film 4; the anti-reflection film 3 is provided on the back of the light guide plate 1 in the area where the light source 2 is installed, and the reflective film 4 is provided on the back of the light guide plate 1 except for the area where the light source 2 is installed;
  • An atomization layer 6 is provided on the front of the light guide plate 1.
  • a method for assembling an ultra-narrow bezel liquid crystal backlight structure includes three steps: Step 1: First determine the specific installation location of the light source 2 on the back of the light guide plate 1, plate an anti-reflection film 3 on this location, and then install the light source 2 Install at the position where the anti-reflection coating 3 is plated on the back of the light guide plate 1; Step 2: Under the premise of step 1, coat the remaining area on the back of the light guide plate 1 with a reflective film 4, and also plate the side of the light guide plate 1 A layer of reflective film 4; Step 3: Atomizing the front surface of the light guide plate 1.
  • the atomization layer 6 includes but is not limited to etching, sandblasting, etc.
  • the atomization treatment can increase light scattering and is more conducive to light uniformity.

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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)

Abstract

一种超窄边框液晶背光结构，包括导光板（1）以及光源（2），光源（2）安装在导光板（1）的背面，导光板（1）的背面都设置有两种薄膜，分别为增透膜（3）和反射膜（4）；增透膜（3）设置在导光板（1）背面安装光源（2）的区域，反射膜（4）设置在导光板（1）背面除安装光源（2）区域外的其他区域；超窄边框液晶背光结构及组装方法，取消了侧边的结构，整个显示产品就可以做到极致窄边框设计，将光源（2）设置在导光板（1）的背面，并通过在导光板（1）背面设置增透膜（3）、反射膜（4）以及在导光板（1）正面雾化处理或者设置半透半反射膜（5）的形式来调整导光板（1）各区域的透光率以及有效地调整导光板（1）正面光的散射，有利于光的均匀化。

Description

一种超窄边框液晶背光结构及组装方法 技术领域
本发明属于液晶边框技术领域，具体涉及一种超窄边框液晶背光结构及组装方法。
背景技术
随着显示技术的发展及越来越广泛的显示应用，人们对显示产品的外观要求也越来越高。其中超窄边框就是当前讨论的热点之一；一般情况下，液晶产品都是通过外框结构对其内部液晶结构、电子等进行支撑与保护，同时，因为当前液晶产品的背光模组一般都采用“侧入式背光条+导光板”的方案(如图1所示)，这就导致在液晶CELL边缘还需要装配背光条，因此增加了边框的宽度，很难做到极致窄边框，影响产品美观度。
因此，有必要设计一种超窄边框液晶背光结构及组装方法来解决上述技术问题。
发明内容
为克服上述现有技术中的不足，本发明目的在于提供一种超窄边框液晶背光结构。
为实现上述目的及其他相关目的，本发明提供的技术方案是：一种超窄边框液晶背光结构，包括导光板以及光源，所述光源安装在所述导光板的背面，所述导光板的背面都设置有两种薄膜，分别为增透膜和反射膜；所述增透膜设置在所述导光板背面安装光源的区域，所述反射膜设置在所述导光板背面除安装光源区域外的其他区域，同时所述导光板的侧面也设置反射膜。
优选的，所述导光板的正面设置有半透半反射膜。
优选的，所述半透半反射膜的“透过/反射”比例与所述光源和所述半透半反射膜的水平距离成正比。
优选的，所述导光板的正面设置有雾化层。
本发明还提供一种超窄边框液晶背光结构的组装方法，具体步骤如下：
步骤一：首先确定光源在导光板背面的具体安装部位，在该部位上镀一层增透膜，然后将光源安装在导光板背面镀增透膜的位置；
步骤二：在步骤一的前提下，将导光板背面剩余的其他区域都镀一层反射膜；同时在导光板的侧面也镀一层反射膜；
步骤三：在导光板的正面镀一层半透半反射的膜，同时半透半反射膜的“透过/反射”比例根据导光板背面光源安装的具***置来定；
优选的，在步骤三的前提下，打开位于导光板背面的光源，以光源照射的中心点为参照物，在导光板的正面从距离光源中心点最近的位置到距离光源中心点最远的位置依次镀半透 半反射膜，同时选用半透半反射膜的“透过/反射”比例也随着距离的增大而增大。
优选的，导光板的正面还能做雾化处理。
由于上述技术方案运用，本发明与现有技术相比具有的优点如下：
本方案设计的一种超窄边框液晶背光结构及组装方法，取消了侧边的结构，整个显示产品就可以做到极致窄边框设计，将光源设置在导光板的背面，并通过在导光背面设置增透膜、反射膜以及在导光板正面雾化处理或者设置半透半反射膜的形式来调整导光板各区域的透光率以及有效地调整导光板正面光的散射，有利于光的均匀化。
附图说明
图1为传统背光模组的“侧入式”结构示意图。
图2为实施例一背光模组结构示意图。
图3为实施例一半透半反射膜分布示意图。
图4为实施例二背光模组结构示意图。
以上附图中，导光板1、光源2、增透膜3、反射膜4、半透半反射膜5、雾化层6。
具体实施方式
以下由特定的具体实施例说明本发明的实施方式，熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本发明的其他优点及功效。
请参阅图1～图4。须知，本说明书所附图式所绘示的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本发明可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本发明所能产生的功效及所能达成的目的下，均应仍落在本发明所揭示的技术内容得能涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述的明了，而非用以限定本发明可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本发明可实施的范畴。
实施例一：
如图2～3所示，
一种超窄边框液晶背光结构，包括导光板1以及光源2，所述光源2安装在所述导光板1的背面，所述导光板1的背面都设置有两种薄膜，分别为增透膜3和反射膜4；所述增透膜3设置在所述导光板1背面安装光源2的区域，所述反射膜4设置在所述导光板1背面除安装光源2区域外的其他区域；所述导光板1的正面设置有半透半反射膜5；所述半透半反射膜5的“透过/反射”比例与所述光源2和所述半透半反射膜5的水平距离成正比；
一种超窄边框液晶背光结构的组装方式，包括三个步骤：步骤一：首先确定光源2在导光板1背面的具体安装部位，在该部位上镀一层增透膜3，然后将光源2安装在导光板1背面镀增透膜3的位置；步骤二：在步骤一的前提下，将导光板1背面剩余的其他区域都镀一层反射膜4，同时在导光板1的侧面也镀一层反射膜4；步骤三：在导光板1的正面镀一层半透半反射的膜，同时半透半反射膜5的“透过/反射”比例根据导光板1背面光源2安装的具***置来定；具体为打开位于导光板1背面的光源2，以光源2照射的中心点为参照物，在导光板1的正面从距离光源2中心点最近的位置到距离光源2中心点最远的位置依次镀半透半反射膜5，同时选用半透半反射膜5的“透过/反射”比例也随着距离的增大而增大。
针对实施例一解释如下：
如图2所示，在导光板1背面的光源2装配区域镀增透膜3，最大化光源2的光透过率；其它区域镀反射膜4，避免背光从背面透出，造成浪费；同样的，导光板1侧面也镀反射膜4，防止背光透出。
如图2所示，导光板1正面镀半透半反膜，使得进入导光板1的光一部分透过一部分反射，反射的光经导光板1背面反射后又会从导光板1正面透出，通过一定的“透过/反射”比例的设定就可以使得背光均匀的从导光板1的正面透射出去，完成背光模组功能。
如图3所示，为了使输出的光更均匀，导光板1正面的镀膜可以分区域进行，每个区域的“透射/反射”比例不同，比如越靠近背光源2的区域“透射/反射”比例越低(图中为阴影较深的部位)，而远离背光源2的区域“透射/反射”比例越高(图中阴影较浅的部位)，这样可以更容易实现背光的均匀输出，需要说明的是，背光源2的位置、形状、区域的数量、各区域的形状等图3中仅仅都是示意，可以根据实际项目自由调整。
实施例二：
如图4所示，
一种超窄边框液晶背光结构，包括导光板1以及光源2，所述光源2安装在所述导光板1的背面，所述导光板1的背面都设置有两种薄膜，分别为增透膜3和反射膜4；所述增透膜3设置在所述导光板1背面安装光源2的区域，所述反射膜4设置在所述导光板1背面除安装光源2区域外的其他区域；所述导光板1的正面设置有雾化层6。
一种超窄边框液晶背光结构的组装方式，包括三个步骤：步骤一：首先确定光源2在导光板1背面的具体安装部位，在该部位上镀一层增透膜3，然后将光源2安装在导光板1背面镀增透膜3的位置；步骤二：在步骤一的前提下，将导光板1背面剩余的其他区域都镀一层反射膜4，同时在导光板1的侧面也镀一层反射膜4；步骤三：对导光板1的正面做雾化处 理。
针对实施二解释如下：
关于在导光板1背面区域镀的反射膜4和增透膜3的原理及其解释本实例二与上述实施例一相同，所以在此不做具体解释，本实施例二与实施例一不同之处在于对导光板1正面做雾化处理，雾化层6包括但不限于蚀刻、喷砂等，雾化处理可增加光的散射，更有利于光的均匀化。
上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (7)

  1. 一种超窄边框液晶背光结构，其特征在于：包括导光板以及光源，所述导光板的背面设置有两种薄膜，分别为增透膜和反射膜；所述增透膜设置在所述导光板背面用于安装光源的区域，所述光源安装在所述安装光源的区域；所述反射膜设置在所述导光板背面除安装光源区域外的其他区域，同时所述导光板的侧面也设置反射膜。
  2. 根据权利要求1所述的一种超窄边框液晶背光结构，其特征在于：所述导光板的正面设置有半透半反射膜。
  3. 根据权利要求2所述的一种超窄边框液晶背光结构，其特征在于：所述半透半反射膜的“透过/反射”比例与所述光源和所述半透半反射膜的水平距离成正比。
  4. 根据权利要求1所述的一种超窄边框液晶背光结构，其特征在于：所述导光板的正面设置有雾化层。
  5. 一种超窄边框液晶背光组装方法，其特征在于：包括如下步骤：
    步骤一：首先确定光源在导光板背面的具体安装部位，在该部位上设置一层增透膜，然后将光源安装在导光板背面设置增透膜的位置；
    步骤二：在步骤一的前提下，将导光板背面剩余的其他区域都设置一层反射膜；同时在导光板的侧面也设置一层反射膜；
    步骤三：在导光板的正面设置一层半透半反射的膜，同时半透半反射膜的“透过/反射”比例根据导光板背面光源安装的具***置来定。
  6. 根据权利要求5所述的一种超窄边框液晶背光组装方法，其特征在于：在步骤三的前提下，打开位于导光板背面的光源，以光源照射的中心点为参照物，在导光板的正面从距离光源中心点最近的位置到距离光源中心点最远的位置依次设置半透半反射膜，同时选用半透半反射膜的“透过/反射”比例也随着距离的增大而增大。
  7. 根据权利要求5所述的一种超窄边框液晶背光组装方法，其特征在于：在导光板正面还能做雾化处理。
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