WO2013007038A1 - 背光模组及液晶显示器 - Google Patents

背光模组及液晶显示器 Download PDF

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Publication number
WO2013007038A1
WO2013007038A1 PCT/CN2011/078025 CN2011078025W WO2013007038A1 WO 2013007038 A1 WO2013007038 A1 WO 2013007038A1 CN 2011078025 W CN2011078025 W CN 2011078025W WO 2013007038 A1 WO2013007038 A1 WO 2013007038A1
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WO
WIPO (PCT)
Prior art keywords
clamping portion
liquid crystal
light source
crystal panel
backlight module
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Application number
PCT/CN2011/078025
Other languages
English (en)
French (fr)
Inventor
萧宇均
张彦学
Original Assignee
深圳市华星光电技术有限公司
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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 US13/260,257 priority Critical patent/US8773607B2/en
Priority to DE112011105351.7T priority patent/DE112011105351B4/de
Publication of WO2013007038A1 publication Critical patent/WO2013007038A1/zh

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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
    • 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
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components
    • 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
    • G02F1/133628—Illuminating devices with cooling means

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular, to a backlight module and a liquid crystal display.
  • the backlight module of the existing liquid crystal display integrated machine generally includes a light guide plate, a light source, a back cover and a heat dissipation plate, the light guide plate is disposed on the back cover, the heat dissipation plate is disposed between the light guide plate and the back cover, and the light source is disposed on the light guide plate a side plate, wherein a heat sink is fixed on the circuit board of the light source on at least one side of the light guide plate, and the heat sink is fixed on the back cover by the elastic member; or the heat sink is bent and formed by the aluminum sheet with high thermal conductivity, The thermal paste is fixed to the back cover.
  • the light source can select LED (Light Emitting) Diode, Light-Bar
  • the heat sink can choose aluminum extrusion, usually the LED light bar will be attached to the aluminum extrusion, and then the aluminum is squeezed onto the back cover for heat dissipation.
  • the heat dissipation effect of the backlight module is affected due to the small effective heat dissipation area of the aluminum squeezing contact with the back cover;
  • the main purpose of the present invention is to provide a backlight module and a liquid crystal display, which are intended to improve the heat dissipation efficiency of the backlight module of the liquid crystal display.
  • the present invention provides a backlight module including: a front case, a rear case, a light source, and a buffer member, the front case including a first clamping portion and extending vertically outward from the first clamping portion a second clamping portion, the second clamping portion is fixedly connected to the rear case; the light source is located between the first clamping portion and the rear case, and the back surface thereof contacts the second clamping portion
  • the inner side surface of the second clamping portion is provided with a fin heat dissipation structure at a position corresponding to the back surface of the light source; the surface of the buffering member respectively contacts a partial upper surface of the liquid crystal panel below the first clamping portion and a Side surface.
  • the method further includes a light guide plate and a liquid crystal panel located above the light guide plate, wherein the light guide plate is located on the other side of the light source with respect to the second clamping portion, and the light incident surface of the light guide plate is adjacent to the light source.
  • the light guide plate and the liquid crystal panel are both located between the first clamping portion and the rear case; the first clamping portion is disposed inwardly away from a side edge of the second clamping portion for clamping a flange of the liquid crystal panel; the bottom of the flange contacts an upper surface of the liquid crystal panel.
  • a central portion of the first clamping portion extends downwardly for a coupling for light, and the protruding portion extends downward to a space between the light source and the liquid crystal panel.
  • the buffer member has an L-shaped cross section and is disposed in the cavity formed by the tab, the flange and the liquid crystal panel.
  • the cushioning member is provided with a honeycomb structure for increasing cushioning properties.
  • the shape of the honeycomb structure comprises at least one of the following: a circle, a rectangle, a triangle or a polygon.
  • the first clamping portion is integrally formed with the second clamping portion, and the outer side surfaces of the two form a continuous curved surface.
  • the light source is fixed to an inner side of the second clamping portion, a bottom of the light source contacts the rear case, and the light source is an LED.
  • the fin heat dissipation structure includes grid-like through grooves parallel to each other, and the direction in which the through grooves extend is parallel to the upper surface of the rear case.
  • the present invention also provides a backlight module, including: a front case, a rear case, and a light source, wherein the front case includes a first clamping portion and a first extending perpendicularly outward from the first clamping portion a second clamping portion, the second clamping portion is fixedly connected to the rear casing; the light source is located between the first clamping portion and the rear casing, and the back surface thereof contacts the inner side surface of the second clamping portion A fin heat dissipation structure is disposed at a position corresponding to the back surface of the light source in the second clamping portion.
  • the method further includes a light guide plate and a liquid crystal panel located above the light guide plate, wherein the light guide plate is located on the other side of the light source with respect to the second clamping portion, and the light incident surface of the light guide plate is adjacent to the light source.
  • the light guide plate and the liquid crystal panel are both located between the first clamping portion and the rear case; the first clamping portion is disposed inwardly away from a side edge of the second clamping portion for clamping a flange of the liquid crystal panel; the bottom of the flange contacts an upper surface of the liquid crystal panel.
  • a central portion of the first clamping portion extends downwardly from a tab, and the protruding portion extends downward to a space between the light source and the liquid crystal panel.
  • the first clamping portion is integrally formed with the second clamping portion, and the outer side surfaces of the two form a continuous curved surface.
  • the light source is fixed to an inner side of the second clamping portion, a bottom of the light source contacts the rear case, and the light source is an LED.
  • the fin heat dissipation structure includes grid-like through grooves parallel to each other, and the direction in which the through grooves extend is parallel to the upper surface of the rear case.
  • the present invention also provides a liquid crystal display including a backlight module, the backlight module comprising: a front case, a rear case and a light source, the front case including a first clamping portion and outwardly from the first clamping portion a second clamping portion extending vertically, the second clamping portion being fixedly coupled to the rear case; the light source being located between the first clamping portion and the rear case, the back surface contacting the second clamping portion An inner side surface of the holding portion; and a fin heat dissipation structure is disposed at a position corresponding to the back surface of the light source in the second clamping portion.
  • the method further includes a light guide plate and a liquid crystal panel located above the light guide plate, wherein the light guide plate is located on the other side of the light source with respect to the second clamping portion, and the light incident surface of the light guide plate is adjacent to the light source.
  • the light guide plate and the liquid crystal panel are both located between the first clamping portion and the rear case; the first clamping portion is disposed inwardly away from a side edge of the second clamping portion for clamping a flange of the liquid crystal panel; the bottom of the flange contacts an upper surface of the liquid crystal panel.
  • a central portion of the first clamping portion extends downwardly from a tab, and the protruding portion extends downward to a space between the light source and the liquid crystal panel.
  • a buffer member having an L-shaped cross section disposed in the cavity formed by the tab, the flange and the liquid crystal panel, wherein the surface of the buffer member contacts the liquid crystal panel respectively at the first clamping Partial upper surface and one side surface below the part.
  • the fin heat dissipation structure includes grid-like through grooves parallel to each other, and the direction in which the through grooves extend is parallel to the upper surface of the rear case.
  • the backlight module and the liquid crystal display provided by the invention directly fix the LED light source on the front shell of the liquid crystal display integrated machine, simplify the heat transfer path, reduce the contact thermal resistance, and increase the effective heat dissipation area of the front shell.
  • the heat generated by the LED light source can be synchronously transmitted to the front shell and the rear shell to realize heat dissipation between the front shell and the rear shell to increase heat dissipation efficiency.
  • the fin heat dissipation structure is arranged on the front shell corresponding to the back surface of the LED light source, thereby further improving Cooling efficiency.
  • a buffer member with a honeycomb structure is disposed at a portion where the front cover holds the liquid crystal panel, which increases the cushioning performance of the liquid crystal panel, thereby improving the assembly performance of the liquid crystal display integrated machine.
  • FIG. 1 is a perspective view showing a first embodiment of a backlight module of the present invention
  • FIG. 2 is a side elevational view of the first embodiment of the backlight module of the present invention
  • Figure 3 is a schematic cross-sectional view of Figure 2;
  • FIG. 4 is a schematic structural view of a cushioning member in a second embodiment of the backlight module of the present invention.
  • FIG. 1 is a perspective view showing a first embodiment of a backlight module of the present invention
  • FIG. 2 is a side elevational view of the first embodiment of the backlight module of the present invention
  • It is a schematic cross-sectional view of Figure 2.
  • a backlight module according to the first embodiment of the present invention includes: a front case 1, a rear case 2, a light source 3, a light guide plate 4, a liquid crystal panel 5, and a reflection sheet 6, wherein the front case 1 is located above the rear case 2.
  • the front case 1 has an L-shaped cross section, and the L-shaped front case 1 includes a first clamping portion 11 and a second clamping portion 12, and the first clamping portion 11 is parallel to the upper surface of the rear case 2;
  • the two clamping portions 12 are formed by bending downwardly from the outer end of the first clamping portion 11 , and an inner side surface of the second clamping portion 12 is engaged with the lower surface of the first clamping portion 11 , the second clamping portion
  • the inner side surface of the first holding portion 11 and the lower surface of the first holding portion 11 constitute a sandwiching surface for sandwiching the light source 3, the light guide plate 4, and the liquid crystal panel 5.
  • the inner side surface of the second clamping portion 12 is perpendicular to the upper surface of the rear case 2, and the bottom of the second clamping portion 12 is fixedly coupled to the rear case 2 by a countersunk screw or a screw 7.
  • the light guide plate 4, the liquid crystal panel 5 and the light source 3 are both located between the first clamping portion 11 and the rear case 2, the back surface of the light source 3 contacts the inner side surface of the second clamping portion 12; the light guide plate 4 is opposite to the second clamping portion
  • the portion 12 is located on the other side of the light source 3, and the light incident surface on the side of the light guide plate 4 is disposed adjacent to the light emitting surface of the light source 3; the liquid crystal panel 5 is located above the light guide plate 4; and the reflective sheet 6 is located between the light guide plate 4 and the rear case 2.
  • the flange 111 for holding the liquid crystal panel 5 is vertically protruded inwardly from a side edge of the first clamping portion 11 away from the second clamping portion 12, and the bottom of the flange 111 contacts the upper surface of the liquid crystal panel 5.
  • the front case 1 and the rear case 2 are made of a material having good heat dissipation properties, such as an aluminum alloy or the like, and are disposed at a position corresponding to the back surface of the light source 3 in the second clamping portion 12.
  • the fin heat dissipation structure 121 includes a grid-like through groove 1211 parallel to each other. The direction in which the through groove 1211 extends is parallel to the upper surface of the rear case 2, and of course, the through groove 1211 may also be perpendicular to the rear case 2 The upper surface extends even at an angle to the upper surface of the rear case 2.
  • the light source 3 in this embodiment is directly fixed on the front case 1.
  • the light source 3 may be an LED or an LED strip that is packaged with a plurality of LEDs. If it is an LED, the LED is packaged and fixed to the front case 1
  • the bottom of the light source 3 can be in contact with the rear case 2 such that part of the thermal energy of the light source 3 is transmitted to the rear case 2, and the auxiliary light source 3 dissipates heat.
  • a tab 112 for coupling light is extended downward in a middle portion of the first clamping portion 11, and the tab 112 extends downward to a space between the light source 3 and the liquid crystal panel 5, and is disposed.
  • the purpose of the tab 112 is to improve the light coupling efficiency of the light source 3, and at the same time, to reflect the light source 3 without additionally providing a reflective material; in addition, the tab 112 can also be better clamped to the liquid crystal panel 5. Hold the role.
  • a buffer member 8 is disposed between the front case 1 and the liquid crystal panel 5, and the buffer member 8 is provided.
  • the cross section is L-shaped.
  • the cushioning member 8 is disposed in the cavity formed by the tab 112 of the first clamping portion 11 of the front case 1 , the flange 111, and the liquid crystal panel 5.
  • the surface of the buffering member 8 is in contact with the partial upper surface and the one side surface of the liquid crystal panel 5 below the first clamping portion 11, that is, the buffering member 8 wraps the side edge of the liquid crystal panel 5 in the first clamping portion 11.
  • the liquid crystal panel 5 can be reinforced and buffered for the liquid crystal panel 5.
  • the cushioning member 8 may be made of an elastic material such as rubber or the like.
  • first clamping portion 11 and the second clamping portion 12 of the front case 1 may be integrally formed, or may be a separate structure, and then fixedly connected by screws or screws.
  • the outer surfaces of the first clamping portion 11 and the second clamping portion 12 form a continuous curved surface 13 such that the front shell 1 has an arc profile, thereby increasing the aesthetics of the liquid crystal display device. .
  • the above structure simplifies the heat conduction path of the light source 3, reduces the contact thermal resistance, increases the effective heat dissipation area of the front case 1, and simultaneously dissipates the light source 3 by the front case 1 and the rear case 2, and provides fins on the front case 1.
  • the heat dissipation structure 121 greatly improves the heat dissipation efficiency of the backlight module.
  • FIG. 4 is a schematic structural view of a buffer member in a second embodiment of the backlight module of the present invention.
  • the second embodiment of the present invention provides a backlight module, which is similar to the first embodiment described above, except that the buffer member 81 is provided with a honeycomb structure 811 in the embodiment, which can further improve the buffering performance of the buffer member 8.
  • the liquid crystal panel is protected from impact damage.
  • the honeycomb structure 811 has a hole-like structure, and the shape of the hole may be a circle, a rectangle, a triangle, a diamond, or other irregular polygons.
  • the other parts of the backlight module are the same as in the first embodiment.
  • the LED light source is directly fixed on the front casing of the liquid crystal display integrated machine, which simplifies the heat transfer path, reduces the contact thermal resistance, and increases the effective heat dissipation area of the front case, and the front case replaces the aluminum in the prior art. Squeeze, so that the heat generated by the LED light source can be synchronously transmitted to the front shell and the rear shell, so that the front shell and the rear shell can be dissipated together to increase the heat dissipation efficiency; at the same time, the fin heat dissipation structure is arranged on the front shell corresponding to the back surface of the LED light source. Further improve heat dissipation efficiency.
  • the buffer member 81 with the honeycomb structure 811 is disposed at a portion where the front case is sandwiched between the liquid crystal panels, which increases the cushioning performance of the liquid crystal panel, thereby improving the assembly performance of the liquid crystal display integrated machine.
  • the present invention also provides a liquid crystal display comprising the back module described in the above embodiments, which will not be described in detail herein.

Abstract

一种背光模组及液晶显示器，包括前壳（1）、后壳（2）及光源（3），前壳（1）包括第一夹持部（11）以及由第一夹持部（11）向外垂直延伸出的第二夹持部（12），第二夹持部（12）与后壳（2）固定连接；光源（3）位于第一夹持部（11）和后壳（2）之间，其背面接触第二夹持部（12）的内侧面；第二夹持部（12）内对应光源（3）背面的位置设置有鰭片散热结构（121），在前壳（1）夹持液晶面板（5）的部分设置有缓冲件（8）。该背光模组及液晶显示器提高了散热效率，并且增加了液晶面板的缓冲性能。

Description

背光模组及液晶显示器
技术领域
本发明涉及液晶显示器技术领域，尤其涉及一种背光模组及液晶显示器。
背景技术
现有的液晶显示器一体机的背光模组，通常包括导光板、光源、后盖和散热板，导光板设置在后盖上，散热板设置在导光板和后盖之间，光源设置在导光板的侧边，其中，导光板的至少一侧边的光源的电路板上固定有散热片，散热片通过弹性件固定于后盖上；或者散热片选用高导热性的铝片弯曲成形后，通过导热胶固定于后盖上。
上述结构中，光源可以选择LED（Light Emitting Diode，发光二极管）灯条（Light-Bar），散热片可以选择铝挤，通常LED灯条将锁附到铝挤上，然后再将铝挤装配到后盖上进行散热。此种结构存在以下缺陷：
1、由于铝挤同后盖接触的有效散热面积较小，背光模组的散热效果受到影响；
2、从光源到铝挤，再到后盖的散热途径中，存在多次介面间的接触，导致接触热阻较大，进一步影响背光模组的散热效果。
发明内容
本发明的主要目的在于提供一种背光模组及液晶显示器，旨在提高液晶显示器背光模组的散热效率。
为了达到上述目的，本发明提出一种背光模组，包括：前壳、后壳、光源以及缓冲件，所述前壳包括第一夹持部以及由所述第一夹持部向外垂直延伸出的第二夹持部，所述第二夹持部与所述后壳固定连接；所述光源位于所述第一夹持部与后壳之间，其背面接触所述第二夹持部的内侧面；所述第二夹持部内对应所述光源背面的位置设有鳍片散热结构；所述缓冲件的表面分别接触所述液晶面板位于第一夹持部下方的局部上表面及一侧表面。
优选地，还包括导光板及位于所述导光板上方的液晶面板，所述导光板相对于第二夹持部位于所述光源的另一侧，导光板侧边的入光面邻近光源的发光面设置；所述导光板及液晶面板均位于所述第一夹持部与后壳之间；所述第一夹持部远离所述第二夹持部的侧边缘向内设有用于夹持所述液晶面板的凸缘；所述凸缘底部接触所述液晶面板的上表面。
优选地，所述第一夹持部中部向下延伸出用于耦光的突片，所述突片向下延伸至所述光源与所述液晶面板之间的空间。
优选地，所述缓冲件横截面为L型，设置在所述突片、凸缘及液晶面板形成的空腔内。
优选地，所述缓冲件设有用于增加缓冲性能的蜂窝结构。
优选地，所述蜂窝结构的形状至少包括以下之一：圆形、矩形、三角形或多边形。
优选地，所述第一夹持部与所述第二夹持部一体成型，且两者的外侧表面构成连续的弧形面。
优选地，所述光源固定于所述第二夹持部的内侧面，所述光源的底部接触所述后壳，所述光源为LED。
优选地，所述鳍片散热结构包括相互平行的栅格状的通槽，通槽延伸的方向平行于后壳的上表面。
本发明还提出一种背光模组，包括：前壳、后壳及光源，其特征在于，所述前壳包括第一夹持部以及由所述第一夹持部向外垂直延伸出的第二夹持部，所述第二夹持部与所述后壳固定连接；所述光源位于所述第一夹持部与后壳之间，其背面接触所述第二夹持部的内侧面；所述第二夹持部内对应所述光源背面的位置设有鳍片散热结构。
优选地，还包括导光板及位于所述导光板上方的液晶面板，所述导光板相对于第二夹持部位于所述光源的另一侧，导光板侧边的入光面邻近光源的发光面设置；所述导光板及液晶面板均位于所述第一夹持部与后壳之间；所述第一夹持部远离所述第二夹持部的侧边缘向内设有用于夹持所述液晶面板的凸缘；所述凸缘底部接触所述液晶面板的上表面。
优选地，所述第一夹持部中部向下延伸出突片，所述突片向下延伸至所述光源与所述液晶面板之间的空间。
优选地，所述第一夹持部与所述第二夹持部一体成型，且两者的外侧表面构成连续的弧形面。
优选地，所述光源固定于所述第二夹持部的内侧面，所述光源的底部接触所述后壳，所述光源为LED。
优选地，所述鳍片散热结构包括相互平行的栅格状的通槽，通槽延伸的方向平行于后壳的上表面。
本发明还提出一种液晶显示器，包括背光模组，所述背光模组包括：前壳、后壳及光源，所述前壳包括第一夹持部以及由所述第一夹持部向外垂直延伸出的第二夹持部，所述第二夹持部与所述后壳固定连接；所述光源位于所述第一夹持部与后壳之间，其背面接触所述第二夹持部的内侧面；所述第二夹持部内对应所述光源背面的位置设有鳍片散热结构。
优选地，还包括导光板及位于所述导光板上方的液晶面板，所述导光板相对于第二夹持部位于所述光源的另一侧，导光板侧边的入光面邻近光源的发光面设置；所述导光板及液晶面板均位于所述第一夹持部与后壳之间；所述第一夹持部远离所述第二夹持部的侧边缘向内设有用于夹持所述液晶面板的凸缘；所述凸缘底部接触所述液晶面板的上表面。
优选地，所述第一夹持部中部向下延伸出突片，所述突片向下延伸至所述光源与所述液晶面板之间的空间。
优选地，还包括缓冲件，其横截面为L型，设置在所述突片、凸缘及液晶面板形成的空腔内，所述缓冲件的表面分别接触所述液晶面板位于第一夹持部下方的局部上表面及一侧表面。
优选地，所述鳍片散热结构包括相互平行的栅格状的通槽，通槽延伸的方向平行于后壳的上表面。
本发明提出的一种背光模组及液晶显示器，将LED光源直接固定在液晶显示器一体机的前壳上，简化了传热途径，减小接触热阻的同时，增加前壳为有效散热面积，使LED光源产生的热量可以同步传递至前壳及后壳上，实现前壳及后壳一同散热，增加散热效率；同时，在前壳上对应LED光源背面的位置设置鳍片散热结构，进一步提高散热效率。另外，在前壳夹持液晶面板的部位设置带有蜂窝结构的缓冲件，增加了液晶面板的缓冲性能，从而提高了液晶显示器一体机的装配性能。
附图说明
图1是本发明背光模组第一实施例的立体结构示意图；
图2是本发明背光模组第一实施例的侧视放大图；
图3是图2的截面示意图；
图4是本发明背光模组第二实施例中缓冲件的结构示意图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
以下将结合附图及实施例，对实现发明目的的技术方案作详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
请一并参照图1、图2及图3，图1是本发明背光模组第一实施例的立体结构示意图；图2是本发明背光模组第一实施例的侧视放大图；图3是图2的截面示意图。本发明第一实施例提出的一种背光模组，包括：前壳1、后壳2、光源3、导光板4、液晶面板5及反射片6，其中，前壳1位于后壳2的上方，前壳1的横截面近似呈L型，该L型的前壳1包括第一夹持部11以及第二夹持部12，第一夹持部11与后壳2的上表面平行；第二夹持部12由第一夹持部11的外侧端向下弯折延伸形成，第二夹持部12的一内侧面与第一夹持部11的下表面衔接，该第二夹持部12的上述内侧面与第一夹持部11的下表面构成夹持光源3、导光板4及液晶面板5的夹持面。第二夹持部12的上述内侧面垂直于后壳2的上表面，且第二夹持部12的底部通过沉头螺钉或螺丝7与后壳2固定连接。
导光板4、液晶面板5及光源3均位于第一夹持部11与后壳2之间，该光源3的背面接触第二夹持部12的内侧面；导光板4相对于第二夹持部12位于光源3的另一侧，导光板4侧边的入光面邻近光源3的发光面设置；液晶面板5位于导光板4的上方；反射片6位于导光板4与后壳2之间。
其中，第一夹持部11远离第二夹持部12的一侧边缘向内垂直凸设有用于夹持液晶面板5的凸缘111，凸缘111底部接触液晶面板5的上表面。
本实施例中，为了提高液晶显示器的散热效率，前壳1和后壳2由散热性能好的材料制作，例如铝合金等，并且在第二夹持部12内对应光源3背面的位置设有鳍片散热结构121，该鳍片散热结构121包括相互平行的栅格状的通槽1211，通槽1211延伸的方向平行于后壳2的上表面，当然通槽1211还可以垂直于后壳2的上表面、甚至与后壳2的上表面呈一定角度延伸。
本实施例中的光源3直接固定于前壳1上，该光源3可以为LED，也可以是封装有若干LED的LED灯条，若为LED，则将LED封装并固定于前壳1的第二夹持部12的内侧面；若为LED灯条，则直接将LED灯条固定于前壳1的第二夹持部12的内侧面。
可优选的实施方式中，可将光源3的底部接触后壳2，使得光源3的部分热能传递到后壳2上，辅助光源3进行散热。
此外，在本实施例中，在第一夹持部11的中部向下延伸出用于耦光的突片112，该突片112向下延伸至光源3与液晶面板5之间的空间，设置突片112的目的可以提高光源3的耦光效率，同时对光源3可以起到反射的作用，而无需额外设置反射材料；另外，设置突片112还可以对液晶面板5起到更好的夹持作用。
更进一步的，如图3所示，本实施例为了避免液晶面板5因液晶显示器晃动或其他原因受到冲击而损坏，在前壳1与液晶面板5之间设有缓冲件8，该缓冲件8的横截面为L型，具体而言，该缓冲件8被设置在前壳1第一夹持部11的突片112、凸缘111以及液晶面板5形成的空腔内。该缓冲件8的表面分别接触液晶面板5位于第一夹持部11下方的局部上表面的及一侧表面，即该缓冲件8将液晶面板5位于第一夹持部11内的侧缘包裹，可以加固液晶面板5并为液晶面板5提供缓冲。为了提高缓冲作用，缓冲件8可以采用弹性材料，比如橡胶等。
此外，本实施例中前壳1的第一夹持部11与第二夹持部12可以一体成型，也可以为分体结构，再通过螺丝或螺钉等固定连接。
本实施例中，第一夹持部11与第二夹持部12两者的外侧表面构成连续的弧形面13，使得前壳1为弧线轮廓，从而可以增加液晶显示器整机的美观性。
上述结构使得光源3的热传导途径得到简化，接触热阻减少，增加了前壳1为有效散热面积，依靠前壳1及后壳2同时对光源3进行散热，并在前壳1上设置鳍片散热结构121，大大提高了背光模组的散热效率。
请参见图4，图4是本发明背光模组第二实施例中缓冲件的结构示意图。本发明第二实施例提出一种背光模组，与上述第一实施例相似，其不同之处在于，本实施例中缓冲件81设有蜂窝结构811，可以进一步提高缓冲件8的缓冲性能，使液晶面板免受冲击损坏，该蜂窝结构811为孔洞状结构，孔洞的形状可以为圆形、矩形、三角形、菱形或者其他不规则的多边形等。背光模组的其他部分与第一实施例相同。
上述结构中，将LED光源直接固定在液晶显示器一体机的前壳上，简化了传热途径，减小接触热阻的同时，增加前壳为有效散热面积，前壳替代现有技术中的铝挤，使LED光源产生的热量可以同步传递至前壳及后壳上，实现前壳及后壳一同散热，增加散热效率；同时，在前壳上对应LED光源背面的位置设置鳍片散热结构，进一步提高散热效率。另外，在前壳夹持液晶面板的部位设置带有蜂窝结构811的缓冲件81，增加了液晶面板的缓冲性能，从而提高了液晶显示器一体机的装配性能。
此外，本发明还提出一种液晶显示器，该液晶显示器包括上述实施例中所述的背部模组，在此不作详述。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (20)

  1. 一种背光模组，包括：前壳、后壳及光源，其特征在于，还包括缓冲件，所述前壳包括第一夹持部以及由所述第一夹持部向外垂直延伸出的第二夹持部，所述第二夹持部与所述后壳固定连接；所述光源位于所述第一夹持部与后壳之间，其背面接触所述第二夹持部的内侧面；所述第二夹持部内对应所述光源背面的位置设有鳍片散热结构；所述缓冲件的表面分别接触所述液晶面板位于第一夹持部下方的局部上表面及一侧表面。
  2. 根据权利要求1所述的背光模组，其特征在于，还包括导光板及位于所述导光板上方的液晶面板，所述导光板相对于第二夹持部位于所述光源的另一侧，导光板侧边的入光面邻近光源的发光面设置；所述导光板及液晶面板均位于所述第一夹持部与后壳之间；所述第一夹持部远离所述第二夹持部的侧边缘向内设有用于夹持所述液晶面板的凸缘；所述凸缘底部接触所述液晶面板的上表面。
  3. 根据权利要求2所述的背光模组，其特征在于，所述第一夹持部中部向下延伸出用于耦光的突片，所述突片向下延伸至所述光源与所述液晶面板之间的空间。
  4. 据权利要求3所述的背光模组，其特征在于，所述缓冲件横截面为L型，设置在所述突片、凸缘及液晶面板形成的空腔内。
  5. 根据权利要求4所述的背光模组，其特征在于，所述缓冲件设有用于增加缓冲性能的蜂窝结构。
  6. 根据权利要求5所述的背光模组，其特征在于，所述蜂窝结构的形状至少包括以下之一：圆形、矩形、三角形或多边形。
  7. 根据权利要求1所述的背光模组，其特征在于，所述第一夹持部与所述第二夹持部一体成型，且两者的外侧表面构成连续的弧形面。
  8. 根据权利要求1所述的背光模组，其特征在于，所述光源固定于所述第二夹持部的内侧面，所述光源的底部接触所述后壳，所述光源为LED。
  9. 根据权利要求1所述的背光模组，其特征在于，所述鳍片散热结构包括相互平行的栅格状的通槽，通槽延伸的方向平行于后壳的上表面。
  10. 一种背光模组，包括：前壳、后壳及光源，其特征在于，所述前壳包括第一夹持部以及由所述第一夹持部向外垂直延伸出的第二夹持部，所述第二夹持部与所述后壳固定连接；所述光源位于所述第一夹持部与后壳之间，其背面接触所述第二夹持部的内侧面；所述第二夹持部内对应所述光源背面的位置设有鳍片散热结构。
  11. 根据权利要求10所述的背光模组，其特征在于，还包括导光板及位于所述导光板上方的液晶面板，所述导光板相对于第二夹持部位于所述光源的另一侧，导光板侧边的入光面邻近光源的发光面设置；所述导光板及液晶面板均位于所述第一夹持部与后壳之间；所述第一夹持部远离所述第二夹持部的侧边缘向内设有用于夹持所述液晶面板的凸缘；所述凸缘底部接触所述液晶面板的上表面。
  12. 根据权利要求11所述的背光模组，其特征在于，所述第一夹持部中部向下延伸出突片，所述突片向下延伸至所述光源与所述液晶面板之间的空间。
  13. 根据权利要求10所述的背光模组，其特征在于，所述第一夹持部与所述第二夹持部一体成型，且两者的外侧表面构成连续的弧形面。
  14. 根据权利要求13所述的背光模组，其特征在于，所述光源固定于所述第二夹持部的内侧面，所述光源的底部接触所述后壳，所述光源为LED。
  15. 根据权利要求10所述的背光模组，其特征在于，所述鳍片散热结构包括相互平行的栅格状的通槽，通槽延伸的方向平行于后壳的上表面。
  16. 一种液晶显示器，其特征在于，包括背光模组，所述背光模组包括：前壳、后壳及光源，所述前壳包括第一夹持部以及由所述第一夹持部向外垂直延伸出的第二夹持部，所述第二夹持部与所述后壳固定连接；所述光源位于所述第一夹持部与后壳之间，其背面接触所述第二夹持部的内侧面；所述第二夹持部内对应所述光源背面的位置设有鳍片散热结构。
  17. 根据权利要求16所述的液晶显示器，其特征在于，还包括导光板及位于所述导光板上方的液晶面板，所述导光板相对于第二夹持部位于所述光源的另一侧，导光板侧边的入光面邻近光源的发光面设置；所述导光板及液晶面板均位于所述第一夹持部与后壳之间；所述第一夹持部远离所述第二夹持部的侧边缘向内设有用于夹持所述液晶面板的凸缘；所述凸缘底部接触所述液晶面板的上表面。
  18. 根据权利要求17所述的液晶显示器，其特征在于，所述第一夹持部中部向下延伸出突片，所述突片向下延伸至所述光源与所述液晶面板之间的空间。
  19. 根据权利要求18所述的液晶显示器，其特征在于，还包括缓冲件，其横截面为L型，设置在所述突片、凸缘及液晶面板形成的空腔内，所述缓冲件的表面分别接触所述液晶面板位于第一夹持部下方的局部上表面及一侧表面。
  20. 根据权利要求16所述的液晶显示器，其特征在于，所述鳍片散热结构包括相互平行的栅格状的通槽，通槽延伸的方向平行于后壳的上表面。
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