WO2020252941A1 - 一种背光模组及其显示装置 - Google Patents

一种背光模组及其显示装置 Download PDF

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Publication number
WO2020252941A1
WO2020252941A1 PCT/CN2019/104880 CN2019104880W WO2020252941A1 WO 2020252941 A1 WO2020252941 A1 WO 2020252941A1 CN 2019104880 W CN2019104880 W CN 2019104880W WO 2020252941 A1 WO2020252941 A1 WO 2020252941A1
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Prior art keywords
light
plastic frame
backlight module
emitting unit
frame
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Ceased
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PCT/CN2019/104880
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English (en)
French (fr)
Inventor
刘健
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US16/611,227 priority Critical patent/US10928581B2/en
Publication of WO2020252941A1 publication Critical patent/WO2020252941A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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

Definitions

  • the invention relates to the field of display technology, in particular to a backlight module and a display device thereof.
  • the liquid crystal display is a passive light-emitting element, and the display itself does not emit light, but is illuminated by the backlight system below it.
  • the backlight source and the liquid crystal display are combined to form a liquid crystal display module.
  • the LCD backlight is a flat, uniform lighting device.
  • the cold cathode fluorescent tubes or LED strips as the light source are arranged on both sides or one side of the entire backlight (it may be the long side or the short side).
  • the cold cathode tube is a linear light source, and the LED is a point light source.
  • a light guide plate is needed to convert this light source into a surface light source.
  • the light guide plate is generally made of acrylic plastic with high light transmittance, and the surface is very smooth and flat, so that most of the internal light will be regularly reflected on the flat surface and will not be emitted to the outside of the light guide plate.
  • White dots are printed on the bottom of the light guide plate of the liquid crystal display. At the position where the light guide plate is printed with dots, the light will no longer be totally reflected regularly but will be emitted above the light guide plate. Controlling the density of dots at each position can control how much light the light guide plate emits at this position. Precisely designed light guide plate dots can spread the incident light on both sides evenly on the entire plane.
  • Optical films will be placed above the light guide plate. These films can uniform light and gather large-angle light for frontal observation.
  • the so-called BackLight is a light source located behind the liquid crystal display (LCD), and its luminous effect will directly affect the visual effect of the liquid crystal display module (LCM).
  • the backlight source is mainly composed of a light source, a light guide plate, an optical film, and a plastic frame.
  • the backlight has the characteristics of high brightness, long life and uniform light emission. According to the different distribution positions of the light source, it is divided into edge type backlight and direct type backlight.
  • Edge lighting is a single light source placed on the side.
  • the light guide plate adopts an injection molding design without printing. It is generally used for small and medium-sized backlight modules under 30 inches.
  • the side incident light source is designed. It has the characteristics of light weight, thin profile, narrow frame, and low power consumption. It is also the light source of mobile phones, tablet computers, and notebook computers. There are also large-size TV backlight modules with edge-light structure.
  • the required backlight brightness is also increasing.
  • it is usually achieved by increasing the number of LED lights. With the increase in the number of LED lights, this means that the heat generated by the LED lights during the light-emitting process will become larger and larger. If the heat cannot be dissipated in time, the service life of the backlight module will be affected.
  • the light emitted by the LED lamp is scattered and the light-emitting surface of the LED lamp is not processed for light collection, a part of the light will not enter the light guide plate, which causes the overall display brightness to be lost. Therefore, a new type of backlight module is needed to solve the above-mentioned problems.
  • An object of the present invention is to provide a backlight module and a display device thereof, which can dissipate heat generated by the light emitted by the light source, and can collect the light emitted by the light source to avoid the loss of light.
  • an embodiment of the present invention provides a backlight module, which includes: an iron frame, a plastic frame, a flexible circuit board, a light source, and a light guide plate.
  • the plastic frame is arranged on the iron frame, the plastic frame is provided with a step; the flexible circuit board is connected to the step of the plastic frame; the light source is arranged on the flexible circuit inside the plastic frame Board; the light guide plate is arranged on the flexible circuit board on the side of the light source away from the plastic frame.
  • the light source includes at least one light-emitting unit, wherein at least one of the light-emitting units is provided with retaining walls on two sides perpendicular to the plastic frame, and the retaining wall faces a side surface of the light-emitting unit A reflective diaphragm is provided on it.
  • the retaining wall is further provided on the top surface of at least one of the light emitting units away from the iron frame; a reflective film is provided on the side surface of the retaining wall facing the light emitting unit.
  • the retaining wall is connected to the plastic frame.
  • the reflective film is further arranged on a surface of the plastic frame facing the light-emitting unit.
  • the retaining wall is connected to the plastic frame.
  • the reflective film is further arranged on a surface of the plastic frame facing the light-emitting unit.
  • an adhesive glue is provided on the side of the step facing the iron frame, and the flexible circuit board is connected to the step of the glue frame through the adhesive glue.
  • the backlight module further includes a reflective layer, and the reflective layer is disposed between the light guide plate and the iron frame.
  • the backlight module further includes an optical film, and the optical film is arranged on a side surface of the light guide plate away from the iron frame.
  • the backlight module further includes a light-shielding tape, and the light-shielding tape is disposed on the plastic frame.
  • Another embodiment of the present invention also provides a display device, which includes the backlight module of the present invention, and the backlight module includes: an iron frame, a plastic frame, a flexible circuit board, a light source, and a light guide plate.
  • the plastic frame is arranged on the iron frame, the plastic frame is provided with a step; the flexible circuit board is connected to the step of the plastic frame; the light source is arranged on the flexible circuit inside the plastic frame Board; the light guide plate is arranged on the flexible circuit board on the side of the light source away from the plastic frame.
  • the light source includes at least one light-emitting unit, wherein at least one of the light-emitting units is provided with retaining walls on two sides perpendicular to the plastic frame, and the retaining wall faces a side surface of the light-emitting unit A reflective diaphragm is provided on it.
  • the retaining wall is further provided on the top surface of at least one of the light emitting units away from the iron frame; a reflective film is provided on the side surface of the retaining wall facing the light emitting unit.
  • the retaining wall is connected to the plastic frame.
  • the reflective film is further arranged on a surface of the plastic frame facing the light-emitting unit.
  • the retaining wall is connected to the plastic frame.
  • the reflective film is further arranged on a surface of the plastic frame facing the light-emitting unit.
  • an adhesive glue is provided on the side of the step facing the iron frame, and the flexible circuit board is connected to the step of the glue frame through the adhesive glue.
  • the backlight module further includes a reflective layer, and the reflective layer is disposed between the light guide plate and the iron frame.
  • the present invention relates to a backlight module and a display device thereof.
  • a flexible circuit board is connected to the steps of the plastic frame to avoid bonding to the light guide plate through adhesive glue, which shortens the light source and The distance between the iron frames, thereby increasing the heat dissipation effect of the backlight module;
  • at least one of the light-emitting units is perpendicular to the two sides of the plastic frame and a retaining wall is arranged on the top surface away from the iron frame , And set a reflective film on the side surface of the retaining wall facing the light-emitting unit to collect and reflect the light emitted by the light-emitting unit, so that the light emitted by the light-emitting unit enters the light guide plate to a greater extent and avoids the loss of light, thereby Increase the luminous efficiency of the backlight module and reduce the production cost.
  • FIG. 1 is a schematic diagram of the structure of the backlight module of the present invention.
  • Fig. 2 is a cross-sectional view of A-A in the schematic structural diagram of the backlight module of the present invention.
  • the component can be directly placed on the other component; there may also be an intermediate component on which the component is placed , And the intermediate component is placed on another component.
  • a component is described as “installed to” or “connected to” another component, both can be understood as directly “installed” or “connected”, or a component is “installed to” or “connected to” through an intermediate component Another component.
  • a backlight module 100 includes: iron frame 1, plastic frame 2, flexible circuit board 3, light source 4, light guide plate 5, retaining wall 6, reflective film 7, reflective layer 8.
  • the plastic frame 2 is set on the iron frame 1; the plastic frame 2 is provided with a step 12, and the step 12 is provided with adhesive glue 11 facing the side of the iron frame 1.
  • the flexible circuit board 3 is adhered to the plastic frame 2 through the adhesive 11, specifically, the adhesive 11 may be a double-sided adhesive; thus, it can be avoided to be adhered to the adhesive through the adhesive 11
  • the distance between the light source and the iron frame 1 is shortened, thereby increasing the heat dissipation effect of the backlight module 100.
  • the light source 4 is arranged on the flexible circuit board 3 inside the plastic frame 2; the light source 4 includes at least one light-emitting unit 41 along the extension of the plastic frame 2.
  • the directional arrangement is arranged on the flexible circuit board 3.
  • the light-emitting unit 41 may be an LED lamp, because the LED lamp has the advantages of energy saving, environmental protection, long life, and small size.
  • At least one of the light-emitting units 41 is provided with a retaining wall 6 on two sides perpendicular to the plastic frame 2, and a reflective film 7 is provided on the side surface of the retaining wall 6 facing the light-emitting unit 41.
  • the retaining wall 6 can also be arranged on the top surface of the light emitting unit 41 away from the iron frame 1; a reflective film 7 is provided on the surface of the retaining wall 6 facing the light emitting unit 41.
  • the reflective film 7 By arranging the reflective film 7 on the retaining wall 6, the light emitted by the light-emitting unit 41 is collected and reflected into the light guide plate 5, which increases the light from the light-emitting unit 41 entering the light guide plate 5 and adds a backlight module
  • the brightness of 100 also increases the luminous efficiency of the backlight module 100, thereby reducing production costs.
  • a retaining wall 6 is provided on two sides of each light-emitting unit 41 perpendicular to the plastic frame 2, and the retaining wall 6 is on a side surface of the light-emitting unit 41.
  • a reflective film 7 is provided.
  • the retaining wall 6 can also be arranged on the top surface of the light emitting unit 41 away from the iron frame 1; a reflective film 7 is provided on the surface of the retaining wall 6 facing the light emitting unit 41.
  • the reflective film 7 By arranging the reflective film 7 on the retaining wall 6, the light emitted by each light-emitting unit 41 is collected and reflected into the light guide plate 5, which increases the light from the light-emitting unit 41 entering the light guide plate 5 and increases the backlight
  • the brightness of the module 100 also increases the luminous efficiency of the backlight module 100, thereby reducing production costs.
  • the retaining wall 6 is connected to the plastic frame 2, and at the same time, the reflective film 7 is also provided on the surface of the plastic frame 2 facing the light-emitting unit 41, and the retaining wall
  • the reflective film 7 on 6 has the same effect, that is, collects the light emitted by the light-emitting unit 41 and reflects it into the light guide plate 5, which increases the light from the light-emitting unit 41 into the light guide plate 5 and increases the brightness of the backlight module 100 , It also increases the luminous efficiency of the backlight module 100, thereby reducing production costs.
  • the light guide plate 5 is arranged on the flexible circuit board 3 on the side of the light source 4 away from the plastic frame 2; the light guide plate 5 converts the light emitted by the light source 4 into a plane light source, thereby entering In the upper optical film 9, the display effect is achieved.
  • the reflective layer 8 is disposed between the light guide plate 5 and the iron frame 1 through an adhesive glue 11.
  • the adhesive glue 11 may be a double-sided adhesive.
  • the reflective layer 8 mainly reflects the light reflected by the light guide plate 5 to be utilized, thereby increasing the luminous efficiency of the backlight module 100.
  • the optical film 9 is arranged on the surface of the light guide plate 5 away from the iron frame 1.
  • the optical film 9 specifically includes: a lower diffusion sheet, a prism sheet, and an upper diffusion sheet.
  • the lower diffuser sheet is arranged on the light guide plate 5; the prism sheet is arranged on the lower diffuser sheet; the upper diffuser sheet is arranged on the prism sheet; the light shielding sheet is arranged on the upper diffuser sheet.
  • there are many granular objects in the lower diffuser and the upper diffuser which can diffuse the light received by the light guide plate 5, so that the light can propagate to the front of the display panel, which widens the viewing angle, and is hidden in the light guide plate 5.
  • the prism sheet can concentrate the diffused light and emit it within a certain angle to achieve the purpose of improving the brightness of the display panel.
  • the light-shielding tape 10 is arranged on the plastic frame 2 mainly to prevent light leakage of the backlight module 100 and affect the optical taste.
  • the present invention also provides a display device, wherein the display device includes the above-mentioned backlight module.

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

Abstract

一种背光模组（100）及其显示装置，一方面，将柔性电路板(3）连接于胶框（2）的台阶上，避免通过粘接胶粘接于导光板（5）上，缩短了光源（4）与铁框（1）之间的距离，从而增加背光模组（100）的散热效果；另一方面，在至少一个发光单元（41）垂直于胶框（2）的两个侧面以及远离铁框（1）的顶面上设置挡墙（6），并在挡墙（6）朝向发光单元（41）的一侧表面设置反射膜片（7），对发光单元（41）发出的光线进行收集反射作用，使得发光单元（41）发出的光线更大程度的进入导光板，避免光线的损失，从而增加背光模组（100）的发光效率，降低生产成本。

Description

一种背光模组及其显示装置 技术领域
本发明涉及显示技术领域，具体涉及一种背光模组及其显示装置。
 背景技术
随着液晶显示技术的不断发展，液晶显示器特别是彩色液晶显示器的应用领域也在不断拓宽。受液晶显示器的市场拉动，背光源产业，呈现一派繁荣景象。液晶显示是被动发光元件，显示屏本身并不发光，而是由其下方的背光系统照亮的。背光源和液晶显示屏组合在一起构成了液晶显示模块。液晶背光是一个平面的均匀照明装置，作为光源的冷阴极荧光灯管或LED灯条排列在整个背光源的两边或一边（可能是长边，也可能是短边）。冷阴极灯管是线光源，LED是点光源，把此光源转换为面光源需要使用导光板。导光板一般由高透光率的亚克力塑料制成，表面非常光滑平整，以致于大部分内部光线会在其平整表面上规则的全反射，而不会射出到导光板外部。液晶显示器的导光板的底部印有白色的网点。在导光板印有网点的位置上，光线不再规则的全反射而是会向导光板上方射出。控制每个位置网点的密度就可以控制导光板在这个位置射出光线的多少。精密设计的导光板网点可以让两侧入射的光线均匀的铺散在整个平面上。导光板上方会再放置光学膜片，这些膜片起到均匀光线，并且汇聚大角度光供正面观察等作用。
所谓背光源（BackLight）是位于液晶显示器（LCD）背后的一种光源，它的发光效果将直接影响到液晶显示模块（LCM）视觉效果。背光源主要由光源、导光板、光学膜片、塑胶框等组成。背光源具有亮度高，寿命长、发光均匀等特点。依光源分布位置不同则分为侧光式背光源和直下式背光源。
侧光式背光源(Edge lighting)为摆在侧边之单支光源，导光板采射出成型无印刷式设计，一般常用于30寸以下中小尺寸的背光模组，其侧边入射的光源设计，拥有轻量、薄型、窄框化、低耗电的特色，亦为手机、平板电脑 、笔记型电脑的光源，亦有大尺寸电视背光模组采用侧光式结构。
 技术问题
随着手机屏占比的不断增大，因而需要的背光亮度也越来越大，为了实现这一要求，通常会通过增加LED灯的颗数来实现。伴随着LED灯数量的增加，这就意味着LED灯在发光过程中产生的热量会越来越大，如果热量不能够及时的散去会影响背光模组的使用寿命。同时由于LED灯发出的光是散射的且在LED灯的出光面没有进行收光处理，有一部分的光不会进入导光板，这就导致整体的显示亮度会受到损失。因此需要寻求一种新型的背光模组以解决上述问题。
 技术解决方案
本发明的一个目的是提供一种背光模组及其显示装置，其能够对光源发光产生的热量起到散热作用，并且可以对光源发出的光进行收集，避免光线的损失。
为了解决上述问题，本发明的一个实施方式提供了一种背光模组，其中包括：铁框、胶框、柔性电路板、光源、导光板。其中所述胶框设置于所述铁框上，所述胶框上设有一台阶；所述柔性电路板连接于所述胶框的台阶上；所述光源设置于所述胶框内侧的柔性电路板上；所述导光板设置于所述光源远离所述胶框一侧的柔性电路板上。
进一步的，其中所述光源包括至少一个发光单元，其中至少一个所述发光单元的垂直于所述胶框的两个侧面上设有挡墙，所述挡墙朝向所述发光单元的一侧表面上设置有反射膜片。
进一步的，其中所述挡墙还设置于至少一个所述发光单元远离所述铁框的顶面上；所述挡墙朝向所述发光单元的一侧表面上设置有反射膜片。
进一步的，其中所述挡墙连接于所述胶框上。
进一步的，其中所述反射膜片还设置于所述胶框朝向所述发光单元的一侧表面上。
进一步的，其中所述挡墙连接于所述胶框上。
进一步的，其中所述反射膜片还设置于所述胶框朝向所述发光单元的一侧表面上。
进一步的，其中所述台阶朝向所述铁框的侧面设置有粘接胶，所述柔性电路板通过所述粘接胶连接于所述胶框的台阶上。
进一步的，其中所述背光模组还包括反射层，所述反射层设置于所述导光板与所述铁框之间。
进一步的，其中所述背光模组还包括光学膜片，所述光学膜片设置于所述导光板远离所述铁框的一侧表面上。
进一步的，其中所述背光模组还包括遮光胶带，所述遮光胶带设置于所述胶框上。
本发明的另一个实施方式还提供了一种显示装置，其包括本发明所涉及的背光模组，所述背光模组包括：铁框、胶框、柔性电路板、光源、导光板。其中所述胶框设置于所述铁框上，所述胶框上设有一台阶；所述柔性电路板连接于所述胶框的台阶上；所述光源设置于所述胶框内侧的柔性电路板上；所述导光板设置于所述光源远离所述胶框一侧的柔性电路板上。
进一步的，其中所述光源包括至少一个发光单元，其中至少一个所述发光单元的垂直于所述胶框的两个侧面上设有挡墙，所述挡墙朝向所述发光单元的一侧表面上设置有反射膜片。
进一步的，其中所述挡墙还设置于至少一个所述发光单元远离所述铁框的顶面上；所述挡墙朝向所述发光单元的一侧表面上设置有反射膜片。
进一步的，其中所述挡墙连接于所述胶框上。
进一步的，其中所述反射膜片还设置于所述胶框朝向所述发光单元的一侧表面上。
进一步的，其中所述挡墙连接于所述胶框上。
进一步的，其中所述反射膜片还设置于所述胶框朝向所述发光单元的一侧表面上。
进一步的，其中所述台阶朝向所述铁框的侧面设置有粘接胶，所述柔性电路板通过所述粘接胶连接于所述胶框的台阶上。
进一步的，其中所述背光模组还包括反射层，所述反射层设置于所述导光板与所述铁框之间。
 有益效果
本发明涉及一种背光模组及其显示装置，一方面，将柔性电路板连接于所述胶框的台阶上，避免通过粘接胶粘接于所述导光板上，缩短了所述光源与铁框之间的距离，从而增加背光模组的散热效果；另一方面，在至少一个所述发光单元垂直于所述胶框的两个侧面以及远离所述铁框的顶面上设置挡墙，并在挡墙朝向所述发光单元的一侧表面设置反射膜片，对发光单元发出的光线进行收集反射作用，使得发光单元发出的光线更大程度的进入导光板，避免光线的损失，从而增加背光模组的发光效率，降低生产成本。
 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。
图1是本发明背光模组的结构示意图。
图2是本发明背光模组结构示意图中的A-A剖面图。
图中部件标识如下：
100、背光模组
1、铁框                        2、胶框
3、柔性电路板                  4、光源
5、导光板                      6、挡墙
7、反射膜片                    8、反射层
9、光学膜片                    10、遮光胶带
11、粘接胶                     12、台阶
41、发光单元
 本发明的实施方式
以下结合说明书附图详细说明本发明的优选实施例，以向本领域中的技术人员完整介绍本发明的技术内容，以举例证明本发明可以实施，使得本发明公开的技术内容更加清楚，使得本领域的技术人员更容易理解如何实施本发明。然而本发明可以通过许多不同形式的实施例来得以体现，本发明的保护范围并非仅限于文中提到的实施例，下文实施例的说明并非用来限制本发明的范围。
本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是附图中的方向，本文所使用的方向用语是用来解释和说明本发明，而不是用来限定本发明的保护范围。
在附图中，结构相同的部件以相同数字标号表示，各处结构或功能相似的组件以相似数字标号表示。此外，为了便于理解和描述，附图所示的每一组件的尺寸和厚度是任意示出的 ，本发明并没有限定每个组件的尺寸和厚度。
当某些组件，被描述为“在”另一组件“上”时，所述组件可以直接置于所述另一组件上；也可以存在一中间组件，所述组件置于所述中间组件上，且所述中间组件置于另一组件上。当一个组件被描述为“安装至”或“连接至”另一组件时，二者可以理解为直接“安装”或“连接”，或者一个组件通过一中间组件“安装至”或“连接至”另一个组件。
实施例1
如图1、图2所示，一种背光模组100，其中包括：铁框1、胶框2、柔性电路板3、光源4、导光板5、挡墙6、反射膜片7、反射层8、光学膜片9以及遮光胶带10。
如图2所示，其中所述胶框2设置于所述铁框1上；所述胶框2上设有一台阶12，所述台阶12朝向所述铁框1的侧面设置有粘接胶11；所述柔性电路板3通过粘接胶11粘接于所述胶框2上，具体的，所述粘接胶11可以是双面胶；由此可以避免通过粘接胶11粘接于所述导光板5上，缩短了所述光源与铁框1之间的距离，从而增加背光模组100的散热效果。
如图2所示，所述光源4设置于所述胶框2内侧的柔性电路板3上；所述光源4包括至少一个发光单元41，所述发光单元41沿着所述胶框2的延伸方向排列设置于所述柔性电路板3上。其中所述发光单元41可以是LED灯，因为LED灯具有节能、环保、寿命长、体积小等优势。
其中至少一个所述发光单元41的垂直于所述胶框2的两个侧面上设有挡墙6，所述挡墙6朝向所述发光单元41的一侧表面上设置有反射膜片7。其中所述挡墙6还可以设置于所述发光单元41远离所述铁框1的顶面上；所述挡墙6朝向所述发光单元41的一侧表面上设置有反射膜片7。通过在挡墙6上设置所述反射膜片7，对发光单元41散发出的光线进行收集，并将其反射进入导光板5，增加了发光单元41进入导光板5的光线，增加背光模组100的亮度 ，也增加了背光模组100的发光效率，从而降低生产成本。
如图1所示，本实施例在每一个发光单元41的垂直于所述胶框2的两个侧面上设有挡墙6，所述挡墙6朝向所述发光单元41的一侧表面上设置有反射膜片7。其中所述挡墙6还可以设置于所述发光单元41远离所述铁框1的顶面上；所述挡墙6朝向所述发光单元41的一侧表面上设置有反射膜片7。通过在挡墙6上设置所述反射膜片7，对每一个发光单元41散发出的光线进行收集，并将其反射进入导光板5，增加了发光单元41进入导光板5的光线，增加背光模组100的亮度 ，也增加了背光模组100的发光效率，从而降低生产成本。
如图2所示，所述挡墙6连接于所述胶框2上，同时所示胶框2朝向所述发光单元41的一侧表面上也设置有所述反射膜片7，与挡墙6上的反射膜片7效果相同，即对发光单元41散发出的光线进行收集，并将其反射进入导光板5，增加了发光单元41进入导光板5的光线，增加背光模组100的亮度 ，也增加了背光模组100的发光效率，从而降低生产成本。
如图2所示，所述导光板5设置于所述光源4远离所述胶框2一侧的柔性电路板3上；所述导光板5将光源4发出的光线转换成平面光源，从而进入上层的光学膜片9中，达到显示的效果。
如图2所示，所述反射层8通过粘接胶11设置于所述导光板5与所述铁框1之间，具体的，所述粘接胶11可以是双面胶。所述反射层8主要是将导光板5反射出的光线进行反射得以利用起来，增加了背光模组100的发光效率。
如图2所示，所述光学膜片9设置于所述导光板5远离所述铁框1的一侧表面上。所述光学膜片9具体的包括：下扩散片、棱镜片以及上扩散片。所述下扩散片设置于所述导光板5上；所述棱镜片设置于所述下扩散片上；所述上扩散片设置于所述棱镜片上；所述遮光片设置于所述上扩散片上。其中下扩散片、上扩散片内有很多颗粒状的物体，可以将导光板5收到的光进行扩散，使光线能够向显示面板的正面方向传播，起到拓宽视角，隐蔽形成在导光板5上的图案的作用。棱镜片可以将扩散的光集中在一定角度内射出，以达到提高显示面板亮度的目的。
如图2所示，所述遮光胶带10设置于所述胶框2上，主要是为了防止背光模组100发生漏光现象，影响光学品味。
本发明还提供了一种显示装置，其中所述显示装置包括上述背光模组。
以上对本发明所提供的背光模组及其显示装置进行了详细介绍。应理解，本文所述的示例性实施方式应仅被认为是描述性的，用于帮助理解本发明的方法及其核心思想，而并不用于限制本发明。在每个示例性实施方式中对特征或方面的描述通常应被视作适用于其他示例性实施例中的类似特征或方面。尽管参考示例性实施例描述了本发明，但可建议所属领域的技术人员进行各种变化和更改。本发明意图涵盖所附权利要求书的范围内的这些变化和更改，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 (20)

  1. 一种背光模组，其中包括：
    铁框；
    胶框，所述胶框设置于所述铁框上，所述胶框上设有一台阶；
    柔性电路板，所述柔性电路板连接于所述胶框的台阶上；
    光源，所述光源设置于所述胶框内侧的柔性电路板上；
    导光板，所述导光板设置于所述光源远离所述胶框一侧的柔性电路板上。
  2. 根据权利要求1所述的背光模组，其中所述光源包括至少一个发光单元，其中至少一个所述发光单元的垂直于所述胶框的两个侧面上设有挡墙，所述挡墙朝向所述发光单元的一侧表面上设置有反射膜片。
  3. 根据权利要求2所述的背光模组，其中所述挡墙还设置于至少一个所述发光单元远离所述铁框的顶面上；所述挡墙朝向所述发光单元的一侧表面上设置有反射膜片。
  4. 根据权利要求2所述的背光模组，其中所述挡墙连接于所述胶框上。
  5. 根据权利要求4所述的背光模组，其中所述反射膜片还设置于所述胶框朝向所述发光单元的一侧表面上。
  6. 根据权利要求3所述的背光模组，其中所述挡墙连接于所述胶框上。
  7. 根据权利要求6所述的背光模组，其中所述反射膜片还设置于所述胶框朝向所述发光单元的一侧表面上。
  8. 根据权利要求1所述的背光模组，其中所述台阶朝向所述铁框的侧面设置有粘接胶，所述柔性电路板通过所述粘接胶连接于所述胶框的台阶上。
  9. 根据权利要求1所述的背光模组，其中还包括反射层，所述反射层设置于所述导光板与所述铁框之间。
  10. 根据权利要求1所述的背光模组，其中还包括光学膜片，所述光学膜片设置于所述导光板远离所述铁框的一侧表面上。
  11. 根据权利要求1所述的背光模组，其中还包括遮光胶带，所述遮光胶带设置于所述胶框上。
  12. 一种显示装置，其中包括背光模组,所述背光模组包括：
    铁框；
    胶框，所述胶框设置于所述铁框上，所述胶框上设有一台阶；
    柔性电路板，所述柔性电路板连接于所述胶框的台阶上；
    光源，所述光源设置于所述胶框内侧的柔性电路板上；
    导光板，所述导光板设置于所述光源远离所述胶框一侧的柔性电路板上。
  13. 根据权利要求12所述的显示装置，其中所述光源包括至少一个发光单元，其中至少一个所述发光单元的垂直于所述胶框的两个侧面上设有挡墙，所述挡墙朝向所述发光单元的一侧表面上设置有反射膜片。
  14. 根据权利要求13所述的显示装置，其中所述挡墙还设置于至少一个所述发光单元远离所述铁框的顶面上；所述挡墙朝向所述发光单元的一侧表面上设置有反射膜片。
  15. 根据权利要求13所述的显示装置，其中所述挡墙连接于所述胶框上。
  16. 根据权利要求15所述的显示装置，其中所述反射膜片还设置于所述胶框朝向所述发光单元的一侧表面上。
  17. 根据权利要求14所述的显示装置，其中所述挡墙连接于所述胶框上。
  18. 根据权利要求17所述的显示装置，其中所述反射膜片还设置于所述胶框朝向所述发光单元的一侧表面上。
  19. 根据权利要求12所述的显示装置，其中所述台阶朝向所述铁框的侧面设置有粘接胶，所述柔性电路板通过所述粘接胶连接于所述胶框的台阶上。
  20. 根据权利要求12所述的显示装置，其中还包括反射层，所述反射层设置于所述导光板与所述铁框之间。
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