WO2015184651A1 - 背光模组及液晶显示装置 - Google Patents

背光模组及液晶显示装置 Download PDF

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Publication number
WO2015184651A1
WO2015184651A1 PCT/CN2014/079618 CN2014079618W WO2015184651A1 WO 2015184651 A1 WO2015184651 A1 WO 2015184651A1 CN 2014079618 W CN2014079618 W CN 2014079618W WO 2015184651 A1 WO2015184651 A1 WO 2015184651A1
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WO
WIPO (PCT)
Prior art keywords
light
cavity wall
cavity
backlight module
guide plate
Prior art date
Application number
PCT/CN2014/079618
Other languages
English (en)
French (fr)
Inventor
李全
萧宇均
唐国富
Original Assignee
深圳市华星光电技术有限公司
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
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/370,771 priority Critical patent/US9588275B2/en
Publication of WO2015184651A1 publication Critical patent/WO2015184651A1/zh

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Classifications

    • 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
    • G02B6/0026—Wavelength selective element, sheet or layer, e.g. filter or grating
    • 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
    • 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
    • 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
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a backlight module having a quantum strip and a liquid crystal display device. Background technique
  • a white light emitting diode In the conventional liquid crystal display device, a white light emitting diode (LED) is generally used as a backlight source, and a backlight of the liquid crystal is realized by a reasonable combination of the light guide plate and the optical film.
  • LED white light emitting diode
  • the current solutions for realizing white light source, high color gamut, and high color saturation in backlights are: using ultraviolet LEDs with RGB phosphors; Blue LED with red and green phosphor; use blue LED plus green LED plus red LED. These schemes can all increase the color gamut, but they are more difficult to implement and costly.
  • the Quantum Dot (QD) technology is a semiconductor nanomaterial structure technology in which electrons are bound to a certain range, and is composed of ultra-small compound crystals having a size of 1 to 100 nm.
  • quantum dot technology crystals of different sizes can be used to control the wavelength of light, thereby precisely controlling the color of light. Therefore, quantum dot materials are used in backlight modules, and high-spectrum light sources (such as blue LEDs) are used to replace traditional white LED light sources.
  • the quantum dots are irradiated with high-frequency light sources, and lasers can generate different wavelengths of light by adjusting the quantum. By adjusting the size of the material, the color of the synthesized light can be adjusted to achieve the backlight requirement of the liquid crystal display device with high color gamut.
  • an object of the present invention is to provide a backlight module including a light source, a light guide plate, a middle frame, and a quantum strip, and the light source is disposed adjacent to a light incident surface of the light guide plate.
  • the middle frame includes a support portion and a receiving portion connected to the support portion, wherein the support portion is disposed on a light emitting surface of the light guide plate, and the receiving portion is disposed at the light source and the Between the light incident surfaces of the light guide plate, the accommodating portion has a accommodating cavity, and the quantum strip is placed in the accommodating cavity, and the first cavity wall of the accommodating portion facing the light source is a second cavity wall facing the light incident surface of the light guide plate Each has a light passing hole, so that light emitted by the light source is irradiated to the light incident surface of the light guide plate through the quantum strip.
  • first cavity wall and the second cavity wall each have a plurality of light-passing holes, and the light-passing holes on the first cavity wall and the light-passing holes on the second cavity wall are one by one correspond. Further, each of the first cavity wall and the second cavity wall has only one light passing hole. Further, the bottom end of the accommodating portion is open, and the bottom of the first cavity wall and the bottom of the second cavity wall are respectively provided with an inwardly protruding boss, wherein the boss is used for supporting the placement The quantum strip in the accommodating cavity.
  • the backlight module further includes a buffering member and a fixing member, wherein the fixing member is engaged and fixed to the bottom end of the first cavity wall and the second cavity wall, and the buffering member is disposed at the bottom Between the boss and the fixing member.
  • Another object of the present invention is to provide a liquid crystal display device including a backlight module and a liquid crystal display panel disposed on the backlight module.
  • the backlight module includes a light source, a light guide plate, a middle frame, and a quantum strip.
  • the middle frame includes a support portion and a receiving portion connected to the support portion, the light source is disposed adjacent to a light incident surface of the light guide plate, and the support portion is disposed on a light emitting surface of the light guide plate And accommodating the liquid crystal display panel, the accommodating portion is disposed between the light source and the light incident surface of the light guide plate, the accommodating portion has a accommodating cavity, and the quantum strip is placed at the a first cavity wall of the accommodating portion facing the light source and a second cavity wall facing the light incident surface of the light guide plate have a light-passing hole for the light source to emit Light is irradiated to the light incident surface of the light guide plate through the quantum strip.
  • first cavity wall and the second cavity wall each have a plurality of light-passing holes, and the light-passing holes on the first cavity wall and the light-passing holes on the second cavity wall are one by one correspond. Further, each of the first cavity wall and the second cavity wall has only one light passing hole. Further, the bottom end of the accommodating portion is open, and the bottom of the first cavity wall and the bottom of the second cavity wall are respectively provided with an inwardly protruding boss, wherein the boss is used for supporting the placement The quantum strip in the accommodating cavity.
  • the backlight module further includes a buffering member and a fixing member, wherein the fixing member is engaged and fixed to the bottom end of the first cavity wall and the second cavity wall, and the buffering member is disposed at the bottom Said boss and Between the fixtures.
  • the backlight module and the liquid crystal display device of the invention have convenient assembly of the quantum strips, and can reduce the risk of broken glass tubes of the quantum strips and improve the yield of the products.
  • FIG. 2 is a partial perspective view of a middle frame according to a first embodiment of the present invention
  • FIG. 3 is a perspective view of a middle frame according to a second embodiment of the present invention
  • FIG. 4 is a third embodiment of the present invention.
  • 5 is a partial perspective view of a middle frame according to a third embodiment of the present invention
  • FIG. 6 is a partial perspective view of a middle frame according to a fourth embodiment of the present invention.
  • FIGS. 1 through 2 is a partial perspective view of a middle frame in accordance with a first embodiment of the present invention.
  • a liquid crystal display device includes a liquid crystal display panel 10, an outer frame 20, and a backlight module.
  • the liquid crystal display panel 10 is disposed on the backlight module, and the outer frame 20 is fixedly coupled with the backlight module to fix the liquid crystal display panel 10 on the backlight module.
  • the backlight module includes an optical film 30, a middle frame 40, a light guide plate 50, a back frame 60, a reflection sheet 70, a light source 80, and a quantum strip 90.
  • the light guide plate 50 is disposed in the back frame 60
  • the reflective sheet 70 is disposed between the light guide plate 50 and the back frame 60
  • the light source 80 is fixedly disposed on the inner surface of the side wall 61 of the back frame 60, so that The light source 80 is adjacent to the light incident surface 51 of the light guide plate 50.
  • the middle frame 40 can be formed, for example, from a plastic material.
  • the middle frame 40 includes a support portion 41, a side wall 42 connected to one end of the support portion 41, and a receiving portion 43 connected to the support portion 41 and parallel to the side wall 42.
  • the support portion 41 is disposed on the light-emitting surface 52 of the light guide plate 50 for supporting the optical film 30 and the liquid crystal display panel 10.
  • the side wall 42 of the middle frame 40 is fixedly coupled to the outer surface of the side wall 61 of the back frame 60 to fix the light guide plate 50 and the reflection sheet 70 in the back frame 60.
  • the outer frame 20 presses the liquid crystal display panel 10 and is fixedly coupled to the side wall 42 of the middle frame 40 to fix the liquid crystal display panel 10 and the optical film 30 between the outer frame 20 and the middle frame 40.
  • the accommodating portion 43 is disposed between the light source 80 and the light incident surface 51 of the light guide plate 50, and includes a accommodating cavity 433 whose both ends are open.
  • the first cavity wall 431 of the accommodating portion 43 facing the light source 80 and the second cavity wall 432 of the accommodating portion 43 facing the light incident surface 51 of the light guide plate 50 each have a light passing hole 434, and the quantum strip 90 is placed in the accommodating cavity.
  • the light emitted from the light source 80 is irradiated onto the light incident surface 51 of the light guide plate 50 through the quantum strip 90.
  • the light source 80 can be an LED light bar composed of a plurality of high frequency light emitting diodes (LEDs)
  • the quantum strip 90 can be a quantum dot glass tube formed by placing a quantum dot material in, for example, a rectangular parallelepiped glass tube. .
  • the quantum dot material in the quantum dot glass tube is irradiated by the high-frequency LED light source to excite the quantum dot material to generate light of different colors, thereby generating a white backlight required for the liquid crystal display device.
  • the first cavity wall 431 of the accommodating portion 43 facing the light source 80 and the second cavity wall 432 of the accommodating portion 43 facing the light incident surface 51 of the light guide plate 50 each have a plurality of light through holes. 434, and the light-passing hole 434 on the first cavity wall 431 corresponds to the light-passing hole 434 on the second cavity wall 432.
  • FIG. 3 is a perspective view of a middle frame in accordance with a second embodiment of the present invention. Referring to FIG. 3, the first cavity wall 431 of the accommodating portion 43 facing the light source 80 and the second cavity wall of the accommodating portion 43 facing the light incident surface 51 of the light guide plate 50 are different from the first embodiment of the present invention.
  • Each of the 432 has only one light-passing hole 434, and the light-passing hole 434 on the first cavity wall 431 is opposite to the light-passing hole 434 on the second cavity wall 432, so that the light emitted by the light source 80 can pass through the first cavity. Pass on wall 431
  • the light holes 434 are irradiated to the quantum dot material in the quantum strip 90, and the quantum dot material is excited to generate light of different colors and is incident on the light incident surface 51 of the light guide plate 50 through the light passing holes 434 on the second cavity wall 432.
  • the light passing holes 434 on the first cavity wall 431 correspond to all the LEDs in the light source 80.
  • Figure 4 is a partial cross-sectional view showing a liquid crystal display device in accordance with a third embodiment of the present invention.
  • Figure 5 is a partial perspective view of a middle frame in accordance with a third embodiment of the present invention.
  • the bottom end of the accommodating portion 43 of the middle frame 40 is open, in other words, the accommodating portion 43 of the middle frame 40 is U-shaped at one end. groove.
  • the quantum strip 90 is prevented from sliding out of the U-shaped opening of the accommodating portion 43, and the bottom of the first cavity wall 431 of the accommodating portion 43 facing the light source 80 is accommodated.
  • the backlight module of the embodiment further includes a fixing member 100, wherein the fixing member 100 is snap-fitted to the first cavity wall 431 and The bottom end of the second cavity wall 432.
  • the fixing member 100 is snap-fitted to the first cavity wall 431 and The bottom end of the second cavity wall 432.
  • only the bottom end of the first cavity wall 431 and the second cavity wall 432 are locked by a fixing member 100 in FIG. 5, but the present invention does not limit the number of the fixing members 100.
  • the backlight module of the embodiment further includes a buffer member 110, in order to prevent damage caused by hard contact between the glass tube and the fixing member 100.
  • the buffering member 110 is disposed between the boss 435 and the fixing member 100.
  • Figure 6 is a partial perspective view of a middle frame in accordance with a fourth embodiment of the present invention. Referring to FIG. 6 , the second cavity wall 431 of the accommodating portion 43 facing the light source 80 and the second cavity wall of the accommodating portion 43 facing the light incident surface 51 of the light guide plate 50 are different from the third embodiment of the present invention.
  • Each of the 432 has only one light-passing hole 434, and the light-passing hole 434 on the first cavity wall 431 is opposite to the light-passing hole 434 on the second cavity wall 432, so that the light emitted by the light source 80 can pass through the first cavity.
  • the light-passing holes 434 on the wall 431 illuminate the quantum dot material in the quantum strip 90, and the quantum dot material is excited to generate light of different colors to be incident on the light guide plate 50 through the light-passing holes 434 on the second cavity wall 432.
  • the light passing holes 434 on the first cavity wall 431 correspond to all the LEDs in the light source 80.

Abstract

一种背光模组以及具有该背光模组的液晶显示装置，该背光模组包括光源（80）、导光板（50）、中框（40）及量子条（90），所述光源（80）邻近于所述导光板（50）的入光面（51）设置，其中，所述中框（40）包括支撑部（41）及与所述支撑部（41）连接的容置部（43），所述支撑部（41）设置在所述导光板（50）的出光面（52）之上，所述容置部（43）设置在所述光源（80）与所述导光板（50）的入光面（51）之间，所述容置部（43）具有容置腔（433），所述量子条（90）放置于所述容置腔（433）之中，所述容置部（43）的朝向所述光源（80）的第一腔壁与朝向所述导光板（50）的入光面的第二腔壁均具有通光孔，以使所述光源发出的光经过所述量子条照射到所述导光板的入光面。所述背光模组及液晶显示装置，便于组装量子条，并可减少量子条的玻璃管破碎的风险，提高产品的良率。

Description

说 明 书 背光模组及液晶显示装置 技术领域
本发明涉及液晶显示领域， 具体地讲， 涉及一种具有量子条的背光模组及 液晶显示装置。 背景技术
在现有的液晶显示装置中， 通常采用白光发光二极管 （LED) 作为背光光 源， 通过导光板和光学膜片的合理搭配实现液晶所需的背光。 随着人们对高色 域、高色彩饱和度、节能的要求越来越高， 目前背光中实现白光光源、高色域、 高色彩饱和度的方案有： 利用紫外 LED配合 RGB荧光粉实现； 利用蓝光 LED 配合红绿荧光粉； 利用蓝光 LED加绿光 LED加红光 LED等。 这些方案都可 以提高色域， 但是实施起来较为困难， 并且成本较高。
量子点（Quantum Dot, 简称 QD )技术， 是把电子束缚在一定范围内的半 导体纳米材料结构技术， 其由尺寸大小在 l~100nm的超小化合物结晶体构成。 在量子点技术中， 可利用不同尺寸大小的结晶体控制光的波长， 进而精确控制 光的颜色。 因此， 量子点材料被应用于背光模组中， 采用高频谱光源 （例如蓝 光 LED ) 取代传统白光 LED光源， 量子点在高频光源的照射小， 可被激光产 生不同波长的光， 通过调整量子点材料的尺寸大小， 即可调节合成光的颜色， 实现高色域的液晶显示装置的背光要求。 但是， 如何将量子点材料可靠牢固的 固定在背光模组中， 是目前亟需解决的问题。 发明内容 为了解决上述现有技术存在的问题， 本发明的目的在于提供一种背光模 组， 包括光源、 导光板、 中框及量子条， 所述光源邻近于所述导光板的入光面 设置， 所述中框包括支撑部及与所述支撑部连接的容置部， 其中， 所述支撑部 设置在所述导光板的出光面之上， 所述容置部设置在所述光源与所述导光板的 入光面之间， 所述容置部具有容置腔， 所述量子条放置于所述容置腔之中， 所 述容置部的朝向所述光源的第一腔壁与朝向所述导光板的入光面的第二腔壁 均具有通光孔， 以使所述光源发出的光经过所述量子条照射到所述导光板的入 光面。 进一步地， 所述第一腔壁与所述第二腔壁均具有多个通光孔， 且所述第一 腔壁上的通光孔与所述第二腔壁上的通光孔一一对应。 进一步地， 所述第一腔壁与所述第二腔壁均只具有一个通光孔。 进一步地， 所述容置部的底端开放， 所述第一腔壁的底部与所述第二腔壁 的底部均设置向内凸起的凸台， 其中， 所述凸台用于支撑放置于所述容置腔中 的所述量子条。 进一步地， 所述背光模组还包括缓冲件及固定件， 其中， 所述固定件卡合 固定于所述第一腔壁与所述第二腔壁的底端， 所述缓冲件设置于所述凸台与所 述固定件之间。 本发明的另一目的还在于提供一种液晶显示装置， 包括背光模组及设置与 所述背光模组之上的液晶显示面板， 所述背光模组包括光源、 导光板、 中框及 量子条， 其中， 所述中框包括支撑部及与所述支撑部连接的容置部， 所述光源 邻近于所述导光板的入光面设置， 所述支撑部设置在所述导光板的出光面之 上， 并承载所述液晶显示面板， 所述容置部设置在所述光源与所述导光板的入 光面之间， 所述容置部具有容置腔， 所述量子条放置于所述容置腔之中， 所述 容置部的朝向所述光源的第一腔壁与朝向所述导光板的入光面的第二腔壁均 具有通光孔， 以使所述光源发出的光经过所述量子条照射到所述导光板的入光 面。 进一步地， 所述第一腔壁与所述第二腔壁均具有多个通光孔， 且所述第一 腔壁上的通光孔与所述第二腔壁上的通光孔一一对应。 进一步地， 所述第一腔壁与所述第二腔壁均只具有一个通光孔。 进一步地， 所述容置部的底端开放， 所述第一腔壁的底部与所述第二腔壁 的底部均设置向内凸起的凸台， 其中， 所述凸台用于支撑放置于所述容置腔中 的所述量子条。 进一步地， 所述背光模组还包括缓冲件及固定件， 其中， 所述固定件卡合 固定于所述第一腔壁与所述第二腔壁的底端， 所述缓冲件设置于所述凸台与所 述固定件之间。 本发明的背光模组及液晶显示装置， 量子条组装方便， 并且可减少量子条 的玻璃管破碎的风险， 提高产品的良率。
附图说明 通过结合附图进行的以下描述， 本发明的实施例的上述和其它方面、 特点 和优点将变得更加清楚， 附图中： 图 1是根据本发明的第一实施例的液晶显示装置的局部剖视图； 图 2是根据本发明的第一实施例的中框的局部立体图； 图 3是根据本发明的第二实施例的中框的立体图； 图 4是根据本发明的第三实施例的液晶显示装置的局部剖视图； 图 5是根据本发明的第三实施例的中框的局部立体图； 图 6是根据本发明的第四实施例的中框的局部立体图。
具体实施方式 以下， 将参照附图来详细描述本发明的实施例。 然而， 可以以许多不同的 形式来实施本发明， 并且本发明不应该被解释为限制于这里阐述的具体实施 例。 相反， 提供这些实施例是为了解释本发明的原理及其实际应用， 从而使本 领域的其他技术人员能够理解本发明的各种实施例和适合于特定预期应用的 各种修改。 将理解的是，尽管在这里可使用术语"第一"、 "第二"等来描述各种元件， 但是这些元件不应受这些术语的限制。这些术语仅用于将一个元件与另一个元 件区分开来。 图 1是根据本发明的第一实施例的液晶显示装置的局部剖视图。 图 2是根 据本发明的第一实施例的中框的局部立体图。 参照图 1至图 2， 根据本发明的第一实施例的液晶显示装置包括液晶显示 面板 10、 外框 20及背光模组。 液晶显示面板 10设置在背光模组之上， 外框 20与背光模组固定结合， 以将液晶显示面板 10固定在背光模组之上。 在本实施例中， 背光模组包括光学膜片 30、 中框 40、导光板 50、背框 60、 反射片 70、 光源 80及量子条 90。 具体而言， 导光板 50设置在背框 60之中， 反射片 70设置在导光板 50与 背框 60之间， 光源 80固定设置在背框 60的侧壁 61的内表面之上， 以使光源 80邻近于导光板 50的入光面 51。 中框 40可例如采用塑料材料形成。 中框 40 包括支撑部 41、 与支撑部 41的一端连接的侧壁 42以及连接于支撑部 41并平 行于侧壁 42的容置部 43。支撑部 41设置在导光板 50的出光面 52之上，用于 支撑光学膜片 30及液晶显示面板 10。 中框 40的侧壁 42与背框 60的侧壁 61 的外表面固定连接， 从而将导光板 50及反射片 70固定在背框 60之中。 外框 20压合液晶显示面板 10， 并与中框 40的侧壁 42固定连接， 以将液晶显示面 板 10与光学膜片 30固定在外框 20与中框 40之间。 容置部 43设置在光源 80 与导光板 50的入光面 51之间， 其包括两侧端开放的容置腔 433。 容置部 43 的朝向光源 80的第一腔壁 431与容置部 43的朝向导光板 50的入光面 51的第 二腔壁 432均具有通光孔 434， 量子条 90放置于容置腔 433中， 从而使光源 80发出的光经过量子条 90照射到导光板 50的入光面 51上。 在本实施例中，光源 80可为由多个高频的发光二极管（LED)组成的 LED 灯条， 量子条 90可是将量子点材料放置于例如长方体状的玻璃管中形成的量 子点玻璃管。 通过高频的 LED光源照射量子点玻璃管中的量子点材料， 激发 量子点材料产生不同色彩的光， 从而产生液晶显示装置所需的白色背光源。 此外， 在本实施例中， 容置部 43的朝向光源 80的第一腔壁 431与容置部 43的朝向导光板 50的入光面 51的第二腔壁 432均具有多个通光孔 434， 并且 第一腔壁 431上的通光孔 434与第二腔壁 432上的通光孔 434—一对应。此外， 第一腔壁 431上的通光孔 434的数量（或第二腔壁 432上的通光孔 434的数量） 与光源 80中的 LED的数量相同， SP， 一个通光孔 434对应一个 LED。 并且一 个通光孔 434的尺寸大小与一个 LED的尺寸大小相当。 图 3是根据本发明的第二实施例的中框的立体图。 参照图 3， 与本发明的第一实施例不同的是， 容置部 43的朝向光源 80的 第一腔壁 431与容置部 43的朝向导光板 50的入光面 51的第二腔壁 432均只 具有一个通光孔 434， 并且第一腔壁 431上的通光孔 434与第二腔壁 432上的 通光孔 434相对设置， 同样可使的光源 80发出的光通过第一腔壁 431上的通 光孔 434照射到量子条 90中的量子点材料， 量子点材料被激发后产生不同色 彩的光通过第二腔壁 432上的通光孔 434照射到导光板 50的入光面 51上。此 夕卜，在本实施例中， 第一腔壁 431上的通光孔 434对应光源 80中的所有 LED。 图 4是根据本发明的第三实施例的液晶显示装置的局部剖视图。 图 5是根 据本发明的第三实施例的中框的局部立体图。 参照图 4和图 5， 与本发明的第一实施例不同的是， 中框 40的容置部 43 的底端开放， 换句话说， 中框 40的容置部 43为一端开放的 U形槽。 此外，为 了支撑放置于容置腔 433中的量子条 90， 避免量子条 90从容置部 43的 U形 开口滑出， 容置部 43的朝向光源 80的第一腔壁 431的底部与容置部 43的朝 向导光板 50的入光面 51的第二腔壁 432的底部均设置向内凸起的凸台 435， 这样， 当量子条 90放置于容置腔 433中时， 两个凸台 435起到支撑量子条 90 的作用。 此外， 为了更进一步地加强量子条 90在容置腔 433中的牢固可靠性， 本 实施例的背光模组还包括固定件 100， 其中， 该固定件 100卡合固定于第一腔 壁 431与第二腔壁 432的底端。 此外， 图 5中仅示出利用一个固定件 100卡合 固定第一腔壁 431与第二腔壁 432的底端， 但本发明并不对固定件 100的数量 做限制。 此外， 由于量子条 90是将量子点材料放置于玻璃管中形成的， 因此， 为了避免玻璃管与固定件 100的硬接触而导致破损， 本实施例的背光模组还包 括缓冲件 110， 其中， 缓冲件 110设置于凸台 435与固定件 100之间。 图 6是根据本发明的第四实施例的中框的局部立体图。 参照图 6， 与本发明的第三实施例不同的是， 容置部 43的朝向光源 80的 第一腔壁 431与容置部 43的朝向导光板 50的入光面 51的第二腔壁 432均只 具有一个通光孔 434， 并且第一腔壁 431上的通光孔 434与第二腔壁 432上的 通光孔 434相对设置， 同样可使的光源 80发出的光通过第一腔壁 431上的通 光孔 434照射到量子条 90中的量子点材料， 量子点材料被激发后产生不同色 彩的光通过第二腔壁 432上的通光孔 434照射到导光板 50的入光面 51上。此 夕卜，在本实施例中， 第一腔壁 431上的通光孔 434对应光源 80中的所有 LED。 虽然已经参照特定实施例示出并描述了本发明， 但是本领域的技术人员将 理解： 在不脱离由权利要求及其等同物限定的本发明的精神和范围的情况下， 可在此进行形式和细节上的各种变化(

Claims

权利要求书
1、 一种背光模组， 包括光源、 导光板、 中框及量子条， 所述光源邻近于 所述导光板的入光面设置， 其中， 所述中框包括支撑部及与所述支撑部连接的 容置部， 所述支撑部设置在所述导光板的出光面之上， 所述容置部设置在所述 光源与所述导光板的入光面之间， 所述容置部具有容置腔， 所述量子条放置于 所述容置腔之中， 所述容置部的朝向所述光源的第一腔壁与朝向所述导光板的 入光面的第二腔壁均具有通光孔， 以使所述光源发出的光经过所述量子条照射 到所述导光板的入光面。
2、 根据权利要求 1所述的背光模组， 其中， 所述第一腔壁与所述第二腔 壁均具有多个通光孔， 且所述第一腔壁上的通光孔与所述第二腔壁上的通光孔 一一对应。
3、 根据权利要求 1所述的背光模组， 其中， 所述第一腔壁与所述第二腔 壁均只具有一个通光孔。
4、 根据权利要求 1所述的背光模组， 其中， 所述容置部的底端开放， 所 述第一腔壁的底部与所述第二腔壁的底部均设置向内凸起的凸台， 其中， 所述 凸台用于支撑放置于所述容置腔中的所述量子条。
5、 根据权利要求 2所述的背光模组， 其中， 所述容置部的底端开放， 所 述第一腔壁的底部与所述第二腔壁的底部均设置向内凸起的凸台， 其中， 所述 凸台用于支撑放置于所述容置腔中的所述量子条。
6、 根据权利要求 3所述的背光模组， 其中， 所述容置部的底端开放， 所 述第一腔壁的底部与所述第二腔壁的底部均设置向内凸起的凸台， 其中， 所述 凸台用于支撑放置于所述容置腔中的所述量子条。
7、 根据权利要求 4所述的背光模组， 其中， 所述背光模组还包括缓冲件 及固定件，其中，所述固定件卡合固定于所述第一腔壁与所述第二腔壁的底端， 所述缓冲件设置于所述凸台与所述固定件之间。
8、 根据权利要求 5所述的背光模组， 其中， 所述背光模组还包括缓冲件 及固定件，其中，所述固定件卡合固定于所述第一腔壁与所述第二腔壁的底端， 所述缓冲件设置于所述凸台与所述固定件之间。
9、 根据权利要求 6所述的背光模组， 其中， 所述背光模组还包括缓冲件 及固定件，其中，所述固定件卡合固定于所述第一腔壁与所述第二腔壁的底端， 所述缓冲件设置于所述凸台与所述固定件之间。
10、 一种液晶显示装置， 包括背光模组及设置于所述背光模组之上的液晶 显示面板， 其中， 所述背光模组包括光源、 导光板、 中框及量子条， 所述光源 邻近于所述导光板的入光面设置， 所述中框包括支撑部及与所述支撑部连接的 容置部， 所述支撑部设置在所述导光板的出光面之上， 所述容置部设置在所述 光源与所述导光板的入光面之间， 所述容置部具有容置腔， 所述量子条放置于 所述容置腔之中， 所述容置部的朝向所述光源的第一腔壁与朝向所述导光板的 入光面的第二腔壁均具有通光孔， 以使所述光源发出的光经过所述量子条照射 到所述导光板的入光面。
11、 根据权利要求 10所述的液晶显示装置， 其中， 所述第一腔壁与所述 第二腔壁均具有多个通光孔， 且所述第一腔壁上的通光孔与所述第二腔壁上的 通光孔一一对应。
12、 根据权利要求 10所述的液晶显示装置， 其中， 所述第一腔壁与所述 第二腔壁均只具有一个通光孔。
13、 根据权利要求 10所述的液晶显示装置， 其中， 所述容置部的底端开 放，所述第一腔壁的底部与所述第二腔壁的底部均设置向内凸起的凸台，其中， 所述凸台用于支撑放置于所述容置腔中的所述量子条。
14、 根据权利要求 11所述的液晶显示装置， 其中， 所述容置部的底端开 放，所述第一腔壁的底部与所述第二腔壁的底部均设置向内凸起的凸台，其中， 所述凸台用于支撑放置于所述容置腔中的所述量子条。
15、 根据权利要求 12所述的液晶显示装置， 其中， 所述容置部的底端开 放，所述第一腔壁的底部与所述第二腔壁的底部均设置向内凸起的凸台，其中， 所述凸台用于支撑放置于所述容置腔中的所述量子条。
16、 根据权利要求 13所述的液晶显示装置， 其中， 所述背光模组还包括 缓冲件及固定件， 其中， 所述固定件卡合固定于所述第一腔壁与所述第二腔壁 的底端， 所述缓冲件设置于所述凸台与所述固定件之间。
17、 根据权利要求 14所述的液晶显示装置， 其中， 所述背光模组还包括 缓冲件及固定件， 其中， 所述固定件卡合固定于所述第一腔壁与所述第二腔壁 的底端， 所述缓冲件设置于所述凸台与所述固定件之间。
18、 根据权利要求 15所述的液晶显示装置， 其中， 所述背光模组还包括 缓冲件及固定件， 其中， 所述固定件卡合固定于所述第一腔壁与所述第二腔壁 的底端， 所述缓冲件设置于所述凸台与所述固定件之间。
PCT/CN2014/079618 2014-06-04 2014-06-10 背光模组及液晶显示装置 WO2015184651A1 (zh)

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