WO2014036723A1 - 一种背光模组及液晶显示器 - Google Patents

一种背光模组及液晶显示器 Download PDF

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Publication number
WO2014036723A1
WO2014036723A1 PCT/CN2012/081135 CN2012081135W WO2014036723A1 WO 2014036723 A1 WO2014036723 A1 WO 2014036723A1 CN 2012081135 W CN2012081135 W CN 2012081135W WO 2014036723 A1 WO2014036723 A1 WO 2014036723A1
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WO
WIPO (PCT)
Prior art keywords
guide plate
light guide
positioning portion
sidewall
backlight module
Prior art date
Application number
PCT/CN2012/081135
Other languages
English (en)
French (fr)
Inventor
阙成文
陈仕祥
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.)
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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 US13/642,528 priority Critical patent/US9052431B2/en
Publication of WO2014036723A1 publication Critical patent/WO2014036723A1/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
    • G02F1/133602—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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133325—Assembling processes

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a backlight module and a liquid crystal display.
  • the backlight module is one of the key components of the liquid crystal display panel.
  • the function of the backlight module is to supply sufficient light and uniform light source to enable the liquid crystal display panel to display images normally.
  • the backlight module of the prior art includes a light source 1, a light guide plate 2 , a reflection sheet 3 , an optical film 4 , a plastic frame 5 , an aluminum extrusion 6 , a back plate 7 , and the like.
  • the light guide plate 2 is disposed on the aluminum extrusion 6, and the light source 1 is located on one side of the light guide plate 2 and fixedly disposed on the aluminum extrusion 6.
  • the light guide plate 2 defines a groove 21 on a side away from the light source 1 , and a positioning post 71 fixed on the back plate 7 is disposed in the groove 21 to realize positioning of the light guide plate 2 .
  • the coupling gap between the light source 1 and the light guide plate 2 is not stable.
  • the coupling gap between the light source 1 and the light guide plate 2 is an important factor affecting the light utilization efficiency in the backlight module.
  • the unstable coupling gap will result in unstable light utilization in the backlight module, resulting in brightness of the liquid crystal display panel. Unstable.
  • the technical problem to be solved by the present invention is to provide a backlight module with stable coupling gap and a liquid crystal display.
  • the backlight module and the liquid crystal display have stable coupling gaps.
  • a technical solution adopted by the present invention is to provide a backlight module, which comprises a plastic frame, a light guide plate and aluminum extrusion, and the plastic frame and the aluminum extrusion are clamped up and down to fix the light guide plate, wherein
  • the light guide plate is disposed on the aluminum extrusion, and includes a light guide plate body portion, a first positioning portion extending along the body of the light guide plate toward the aluminum, and a second positioning portion extending along the body portion of the light guide plate to the plastic frame;
  • the first positioning portion is provided with a positioning groove, and the first positioning portion is tightly fitted in the positioning groove;
  • the plastic frame is provided with the engaging portion at the corresponding second positioning portion, and the second positioning portion and the engaging portion are closely abutted;
  • the first positioning portion a first inclined surface extending obliquely from a bottom surface of the light guide body portion toward a bottom end of the light incident surface, wherein an end of the first inclined surface away from the light guide body portion is connected to a bottom end
  • the backlight module further includes a reflective sheet disposed between the bottom surface of the light guide plate and the aluminum extrusion and the reflective sheet is spread across the first sidewall of the aluminum extrusion.
  • a backlight module which comprises a plastic frame, a light guide plate and aluminum extrusion, and the plastic frame and the aluminum extrusion are clamped up and down to fix the light guide plate.
  • the light guide plate is disposed on the aluminum extrusion body, and includes a light guide plate body portion and a first positioning portion extending toward the aluminum body along the light guide plate body portion; the aluminum extrusion is provided with a positioning groove at the corresponding first positioning portion, and the first The positioning portion is tightly fitted in the positioning groove.
  • the first positioning portion includes a first inclined surface extending obliquely from a bottom surface of the light guide body portion toward a bottom end of the light incident surface, and the first inclined surface is away from an end of the light guide plate body portion and a bottom end of the light incident surface through the first
  • the bottom surface of the positioning portion is connected;
  • the positioning groove includes a bottom wall, a first side wall and a second side wall spaced apart from each other at the two ends of the bottom wall, wherein the first side wall is parallel to the first inclined surface, and the second side wall is parallel to the light entering
  • the bottom wall is parallel to the bottom surface of the first positioning portion; wherein the first side wall is in close contact with the first inclined surface, the second side wall and the light incident surface are closely abutted, and the bottom wall and the bottom surface of the first positioning portion are tightly closed Abut.
  • the backlight module further includes a reflective sheet disposed between the bottom surface of the light guide plate and the aluminum extrusion and the reflective sheet is spread across the first sidewall of the aluminum extrusion to buffer the light guide plate and the bottom surface of the light guide plate. The leaked light is reflected to the light guide plate.
  • the first positioning portion includes a first inclined surface extending obliquely from a bottom surface of the light guide plate body portion toward a bottom end of the light incident surface, and an end of the first inclined surface away from the light guide plate body portion is in contact with a bottom end of the light incident surface;
  • the positioning groove includes a first sidewall parallel to the first inclined surface and a second sidewall parallel to the light incident surface, the first sidewall and the second sidewall obliquely intersect at a bottom of the positioning groove; wherein the first sidewall and The first inclined surface is in close contact with each other, and the second side wall and the light incident surface are in close contact with each other.
  • the light guide plate further includes a second positioning portion extending along the main body of the light guide plate toward the plastic frame.
  • the plastic frame is provided with a joint portion corresponding to the second positioning portion, and the second positioning portion and the joint portion are closely abutted.
  • the second positioning portion includes a second inclined surface extending obliquely along a top end of the light guide body portion facing the light incident surface, and the joint portion includes a joint surface disposed parallel to the second inclined surface, and the joint surface closely abuts the inclined surface .
  • the backlight module further includes a buffer material, and the buffer material is a buffer material having a reflective function, and the buffer material is disposed between the second inclined surface and the joint surface.
  • the first positioning portion and the second positioning portion are injection molded, and the first positioning portion and the second positioning portion are vertically symmetrically disposed.
  • the backlight module comprises a light source, and the light source is fixedly disposed on the sidewall of the light-incident surface of the aluminum extruded body toward the light guide plate.
  • a liquid crystal display which includes a backlight module
  • the backlight module includes a plastic frame, a light guide plate, and an aluminum extrusion, a plastic frame and an aluminum extrusion clamp. Holding a light guide plate, wherein the light guide plate is disposed on the aluminum extrusion, and includes a light guide plate body portion and a first positioning portion extending toward the aluminum body along the light guide plate body portion; the aluminum extrusion is disposed at a position corresponding to the first positioning portion a slot, and the first positioning portion is tightly fitted in the positioning slot.
  • the first positioning portion includes a first inclined surface extending obliquely from a bottom surface of the light guide body portion toward a bottom end of the light incident surface, and the first inclined surface is away from an end of the light guide plate body portion and a bottom end of the light incident surface through the first
  • the bottom surface of the positioning portion is connected;
  • the positioning groove includes a bottom wall, a first side wall and a second side wall spaced apart from each other at the two ends of the bottom wall, wherein the first side wall is parallel to the first inclined surface, and the second side wall is parallel to the light entering
  • the bottom wall is parallel to the bottom surface of the first positioning portion; wherein the first side wall is in close contact with the first inclined surface, the second side wall and the light incident surface are closely abutted, and the bottom wall and the bottom surface of the first positioning portion are tightly closed Abut.
  • the backlight module further includes a reflective sheet disposed between the bottom surface of the light guide plate and the aluminum extrusion and the reflective sheet is spread across the first sidewall of the aluminum extrusion.
  • the first positioning portion includes a first inclined surface extending obliquely from a bottom surface of the light guide plate body portion toward a bottom end of the light incident surface, and an end of the first inclined surface away from the light guide plate body portion is in contact with a bottom end of the light incident surface;
  • the positioning groove includes a first sidewall parallel to the first inclined surface and a second sidewall parallel to the light incident surface, the first sidewall and the second sidewall obliquely intersect at a bottom of the positioning groove; wherein the first sidewall and The first inclined surface is in close contact with each other, and the second side wall and the light incident surface are in close contact with each other.
  • the light guide plate further includes a second positioning portion extending along the main body of the light guide plate toward the plastic frame.
  • the plastic frame is provided with a joint portion corresponding to the second positioning portion, and the second positioning portion and the joint portion are closely abutted.
  • the second positioning portion includes a second inclined surface extending obliquely along a top end of the light guide body portion facing the light incident surface, and the joint portion includes a joint surface disposed parallel to the second inclined surface, and the joint surface closely abuts the inclined surface .
  • the backlight module further includes a buffer material, and the buffer material is a buffer material having a reflective function, and the buffer material is disposed between the second inclined surface and the joint surface.
  • the first positioning portion and the second positioning portion are injection molded, and the first positioning portion and the second positioning portion are vertically symmetrically disposed.
  • the backlight module comprises a light source, and the light source is fixedly disposed on the sidewall of the light-incident surface of the aluminum extruded body toward the light guide plate.
  • the invention has the beneficial effects that the backlight module and the liquid crystal display of the present invention use the direct matching of the light guide plate and the aluminum extrusion and the plastic frame to fix the light guide plate, thereby improving the stability of the light guide plate fixing.
  • the stability of the coupling gap is improved, the structure is simple, and the manufacturing cost is saved due to the reduction of the positioning parts of the light guide plate.
  • FIG. 1 is a schematic cross-sectional view of a prior art backlight module
  • FIG. 2 is a schematic cross-sectional view showing a first embodiment of a backlight module of the present invention
  • FIG. 3 is a schematic cross-sectional view of the light guide plate and aluminum extruded in the backlight module of FIG. 2 in a disassembled state;
  • FIG. 4 is a schematic cross-sectional view showing a second embodiment of a backlight module of the present invention.
  • FIG. 5 is a cross-sectional view of the light guide plate and the aluminum extruded in the backlight module of FIG. 4 in a disassembled state.
  • an embodiment of the present invention provides a backlight module, which includes a plastic frame 1 , a light guide plate 2 , an aluminum extrusion 3 , a light source 4 , and a reflective sheet 5 .
  • the plastic frame 1 and the aluminum extrusion 3 are clamped up and down to fix the light guide plate 2.
  • the light guide plate 2 is disposed on the aluminum extrusion 3, and the light source 4 is fixedly disposed on the aluminum extrusion 3 and located on the right side of the light guide plate 2.
  • the reflection sheet 5 is disposed between the light guide plate 2 and the aluminum extrusion 3.
  • the light guide plate 2 includes a light incident surface 21, a light exit surface 22, a bottom surface 23, a light guide plate body portion 25, and a first positioning portion 26 extending along the light guide plate body portion 25 toward the aluminum extrusion 3.
  • the light incident surface 21 includes a top end 211 and a bottom end 212.
  • the light exit surface 22 is connected to the top end 211 of the light incident surface 21, and the bottom surface 23 is connected to the bottom end 212 of the light incident surface 21, and the light exit surface 22 is disposed opposite to the bottom surface 23.
  • the light incident surface 21 receives the light from the light source 4 and introduces it into the light guide plate 2, and the light exit surface 22 guides the light out of the light guide plate 2.
  • the aluminum extrusion 3 is provided with a positioning groove 36 at the corresponding first positioning portion 26.
  • the first positioning portion 26 is tightly fitted in the positioning groove 36 to fix the light guide plate 2.
  • the first positioning portion 26 includes a first inclined surface 261 and a bottom surface 262.
  • the first inclined surface 261 is an inclined surface that extends obliquely from the bottom surface of the light guide plate main body portion 25 toward the bottom end 212 of the light incident surface 21 .
  • One end of the first inclined surface 261 away from the light guide plate body portion 25 and the bottom end 212 of the light incident surface 21 are connected by the bottom surface 262 of the first positioning portion 26.
  • the positioning groove 36 includes a bottom wall 363, a first side wall 361 and a second side wall 362 spaced apart from each other at both ends of the bottom wall 363.
  • the bottom wall 363 connects the first side wall 361 and the second side wall 362.
  • the first side wall 361 and the first inclined surface 261 are disposed in parallel
  • the second side wall 362 and the light incident surface 21 are disposed in parallel
  • the bottom wall 363 and the bottom surface 262 are disposed in parallel.
  • the first side wall 361 and the first inclined surface 261 are in close contact with each other
  • the second side wall 362 and the light incident surface 21 are in close contact with each other
  • the bottom wall 363 and the bottom surface 262 are in close contact with each other.
  • the first positioning portion 26 has a trapezoidal shape in cross-sectional view.
  • the reflective sheet 5 is disposed between the bottom surface of the light guide plate main body 25 and the aluminum extrusion 3 and spanned to the first sidewall 361 of the aluminum extrusion 3. In practical applications, the reflective sheet 5 may also be spread across the laminate.
  • the first inclined surface 261 of the first positioning portion 26 reflects the light leaked from the light guide plate 2 to the light guide plate 2, thereby improving the utilization of light and simultaneously buffering the light guide plate 2.
  • the backlight module further includes a buffer material 6 disposed between the plastic frame 1 and the light guide plate 2, and pressed together with the plastic frame 1 to press the light-emitting surface 22 of the light guide plate 2, so that The first positioning portion 26 and the positioning groove 36 are in close contact with each other, thereby further improving the stability of the fixed light guide plate and buffering the light guide plate 2.
  • the aluminum extrusion 3 further includes a bottom portion 31, a top portion 32, side portions 33, mounting grooves 34, and projections 35.
  • a raised top portion 32 is provided on the bottom portion 31 for supporting the light guide plate main body 25.
  • One side of the bottom portion 31 has a side portion 33 disposed perpendicular to the bottom portion 31, and the light source 4 is fixedly disposed on the side portion 33.
  • the positioning groove 36 and the mounting groove 34 are spaced apart from each other on the top portion 32, and the light source 4 is disposed in the mounting groove 34.
  • the protrusion 35 is disposed between the positioning groove 36 and the mounting groove 34.
  • the protrusion 35 is located between the light source 4 and the light guide plate 2, and abuts against the light incident surface 21 of the light guide plate 2 for preventing the light guide plate 2 from being removed.
  • the light source 4 is damaged too close to the light source 4.
  • the protrusions 35 are in contact with the non-incident area of the light guide plate 2, and the effective utilization area of the light-incident surface 21 of the light guide plate is not contacted, and the incident effect of the backlight module is not affected.
  • an embodiment of the present invention provides another backlight module, which includes a plastic frame 51 , a light guide plate 52 , an aluminum extrusion 53 , a light source 54 , and a reflection sheet 55 .
  • the light source 54 and the reflective sheet 55 are similar to the light source 4 and the reflective sheet 5 in the backlight module of the first embodiment, and are not described herein again.
  • the light guide plate 52 includes a light incident surface 521 , a light exit surface 522 , a bottom surface 523 , a light guide plate body portion 525 , and a first positioning portion 526 extending along the light guide plate body portion 525 toward the aluminum extrusion 53 .
  • the aluminum extrusion 53 is provided with a positioning groove 536 at the corresponding first positioning portion 526.
  • the first positioning portion 526 is tightly fitted in the positioning groove 536 to fix the light guide plate 52.
  • the first positioning portion 526 includes a first inclined surface 5261 extending obliquely from the bottom surface of the light guide plate main portion 525 toward the bottom end 5212 of the light incident surface 521 .
  • One end of the first inclined surface 5261 away from the light guide plate body portion 525 and the bottom end 5212 of the light incident surface 521 are in contact with each other.
  • the positioning slot 536 includes a first sidewall 5361 and a second sidewall 5362.
  • the first side wall 5361 is disposed in parallel with the first inclined surface 5261
  • the second side wall 5362 is disposed in parallel with the light incident surface 521, the first side wall 5361 and the second side wall.
  • the 5362 is obliquely intersected at the bottom of the positioning groove 536.
  • the first side wall 5361 and the first inclined surface 5261 are in close contact with each other, and the second side wall 5362 and the light incident surface 521 are in close contact with each other.
  • the first positioning portion 526 has a triangular shape in cross-sectional view.
  • the first positioning portion 526 may also be a rectangle or the like in a schematic cross-sectional view, and the specific implementation is similar, and details are not described herein again.
  • the light guide plate 52 of the backlight module further includes a second positioning portion 527 extending along the light guide plate body portion 525 toward the plastic frame 51.
  • the first positioning portion 526 and the second positioning portion 527 are injection molded.
  • the plastic frame 51 is provided with a joint portion 511 corresponding to the second positioning portion 527.
  • the second positioning portion 527 and the joint portion 511 are in close contact with each other to further improve the stability of the fixed light guide plate.
  • the second positioning portion 527 includes a second inclined surface 5271 which is an inclined surface that extends obliquely along the top end 5211 of the light incident surface 521 along the top surface of the light guide body portion 525.
  • the joint portion 511 includes a joint surface 5111.
  • the joint surface 5111 is disposed in parallel with the second inclined surface 5271, and the joint surface 5111 and the second inclined surface 5271 are in close contact with each other.
  • the second positioning portion 527 and the first positioning portion 526 are symmetrically disposed to further improve the stability of the fixed light guide plate 52.
  • the backlight module further includes a buffer material 7 disposed between the bonding surface 5111 of the plastic frame 51 and the second inclined surface 5271 of the light guide plate 52 to buffer the light guide plate 52.
  • the buffer material 7 may be disposed on the plastic frame 51 or on the light guide plate 52; the buffer material 7 may be different materials, for example, silica gel, rubber, etc.; the buffer material 7 may be used in various ways. It is disposed on the plastic frame 51 or the light guide plate 52.
  • the double-sided adhesive can be attached to the plastic frame 51 or the light guide plate 52, or the slot can be directly engaged in the slot by providing a slot on the plastic frame 51 or the light guide plate 52. And so on.
  • the cushioning material 7 is a buffering material having a reflecting function for reflecting light leaking from the second inclined surface 5271 to the light guide plate 52 to improve the utilization of light.
  • the aluminum extrusion 53 further includes a bottom portion 531, a top portion 532, a side portion 533, a mounting groove 534, and a protrusion 535.
  • the bottom portion 531 of the aluminum extrusion 53, the top portion 532, the side portion 533, the mounting groove 534, the protrusion 535 and the bottom portion 31 of the aluminum extrusion 3 in the backlight module of the first embodiment, the top portion 32, the side portion 33, the mounting groove 34, and the protrusion 35 is similar and will not be described here.
  • the present invention further provides a liquid crystal display including the backlight module of the embodiment of the present invention.
  • the invention has the beneficial effects that the backlight module and the liquid crystal display of the present invention use the direct matching of the light guide plate and the aluminum extrusion and the plastic frame to fix the light guide plate, thereby improving the stability of the light guide plate fixing.
  • the stability of the coupling gap is improved, the structure is simple, and the manufacturing cost is saved due to the reduction of the positioning parts of the light guide plate.

Abstract

一种背光模组，包括胶框（1）、导光板（2）和铝挤（3），胶框（1）和铝挤（3）上下夹持以固定导光板（2），其中，导光板（2）设置在铝挤（3）上，其包括导光板本体部（25）以及沿导光板本体部（25）向铝挤（3）延伸的第一定位部（26），铝挤（3）在对应第一定位部（26）处设置有定位槽（36），第一定位部（26）紧密装配于定位槽（36）中。还披露了一种液晶显示器。该背光模组和液晶显示器采用导光板（2）和铝挤（3）、胶框（1）的直接配合固定导光板（2），提高导光板（2）固定的稳定性，从而提高耦光间隙的稳定性。

Description

一种背光模组及液晶显示器
【技术领域】
本发明涉及液晶显示领域，特别涉及一种背光模组及液晶显示器。
【背景技术】
背光模组为液晶显示器面板的关键零组件之一。背光模组的功能在于供应充足的亮度与分布均匀的光源，使液晶显示器面板能正常显示影像。请参考图1，现有技术的背光模组包括发光源1、导光板2、反射片3、光学膜片4、胶框5、铝挤6、背板7等。导光板2设置在铝挤6上，发光源1位于导光板2的一侧且固定设置在铝挤6上。导光板2在远离发光源1的一侧开设有一凹槽21，固定在背板7上的定位柱71设置在凹槽21中以实现对导光板2的定位。现有技术的背光模组中，因为定位柱71与凹槽21之间的间隙以及定位柱71在背板7上的位置偏差等因素的影响，发光源1与导光板2的耦光间隙不稳定。然而，发光源1与导光板2的耦光间隙是影响背光模组中光利用率的重要因素，耦光间隙不稳定将导致背光模组中光利用率不稳定，从而导致液晶显示面板的亮度不稳定。
【发明内容】
本发明主要解决的技术问题是提供一种耦光间隙稳定的背光模组及液晶显示器，该背光模组及液晶显示器具有稳定的耦光间隙。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种背光模组，该背光模组包括胶框、导光板和铝挤，胶框和铝挤上下夹持以固定导光板，其中，导光板设置在铝挤上，其包括导光板本体部、沿导光板本体部向铝挤延伸的第一定位部以及沿导光板本体部向胶框延伸的第二定位部；铝挤在对应第一定位部处设置有定位槽，且第一定位部紧密装配于定位槽中；胶框在对应第二定位部设置有接合部，第二定位部和接合部紧密抵接；第一定位部包括自导光板本体部的底面朝向入光面的底端倾斜延伸的第一倾斜面，第一倾斜面远离导光板本体部的一端与入光面的底端通过第一定位部的底面相连；定位槽包括底壁、间隔设置在底壁两端的第一侧壁和第二侧壁，其中，第一侧壁平行于第一倾斜面，第二侧壁平行于入光面，底壁平行于第一定位部的底面；其中，第一侧壁与第一倾斜面紧密抵接，第二侧壁和入光面紧密抵接，底壁和第一定位部的底面紧密抵接。
其中，背光模组还包括一反射片，反射片设置在导光板的底面和铝挤之间且反射片跨铺至铝挤的第一侧壁上。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种背光模组，该述背光模组包括胶框、导光板和铝挤，胶框和铝挤上下夹持以固定导光板，其中，导光板设置在铝挤上，其包括导光板本体部以及沿导光板本体部向铝挤延伸的第一定位部；铝挤在对应第一定位部处设置有定位槽，且第一定位部紧密装配于定位槽中。
其中，第一定位部包括自导光板本体部的底面朝向入光面的底端倾斜延伸的第一倾斜面，第一倾斜面远离导光板本体部的一端与入光面的底端通过第一定位部的底面相连；定位槽包括底壁、间隔设置在底壁两端的第一侧壁和第二侧壁，其中，第一侧壁平行于第一倾斜面，第二侧壁平行于入光面，底壁平行于第一定位部的底面；其中，第一侧壁与第一倾斜面紧密抵接，第二侧壁和入光面紧密抵接，底壁和第一定位部的底面紧密抵接。
其中，背光模组还包括一反射片，反射片设置在导光板的底面和铝挤之间且反射片跨铺至铝挤的第一侧壁上，以对导光板进行缓冲并将导光板底面漏出的光线反射至导光板。
其中，第一定位部包括自导光板本体部的底面朝向入光面的底端倾斜延伸的第一倾斜面，第一倾斜面远离导光板本体部的一端与入光面的底端相接；定位槽包括平行于第一倾斜面的第一侧壁和平行于入光面的第二侧壁，第一侧壁和第二侧壁在定位槽的底部倾斜相交；其中，第一侧壁和第一倾斜面紧密抵接，第二侧壁和入光面紧密抵接。
其中，导光板还包括沿导光板本体部向胶框延伸的第二定位部，胶框在对应第二定位部设置有接合部，第二定位部和接合部紧密抵接。
其中，第二定位部包括沿导光体本体部的顶面向入光面的顶端倾斜延伸的第二倾斜面，接合部包括平行第二倾斜面设置的接合面，接合面与倾斜面紧密抵接。
其中，背光模组进一步包括一缓冲材料，缓冲材料为具有反射功能的缓冲材料，缓冲材料设置在第二倾斜面和接合面之间。
其中，第一定位部和第二定位部为注射成型，第一定位部和第二定位部上下对称设置。
其中，背光模组包括一光源，光源固定设置在铝挤朝向导光板的入光面的侧壁上。
为解决上述技术问题，本发明采用的又一个技术方案是：提供一种液晶显示器，该液晶显示器包括背光模组，背光模组包括胶框、导光板和铝挤，胶框和铝挤上下夹持以固定导光板，其中，导光板设置在铝挤上，其包括导光板本体部以及沿导光板本体部向铝挤延伸的第一定位部；铝挤在对应第一定位部处设置有定位槽，且第一定位部紧密装配于定位槽中。
其中，第一定位部包括自导光板本体部的底面朝向入光面的底端倾斜延伸的第一倾斜面，第一倾斜面远离导光板本体部的一端与入光面的底端通过第一定位部的底面相连；定位槽包括底壁、间隔设置在底壁两端的第一侧壁和第二侧壁，其中，第一侧壁平行于第一倾斜面，第二侧壁平行于入光面，底壁平行于第一定位部的底面；其中，第一侧壁与第一倾斜面紧密抵接，第二侧壁和入光面紧密抵接，底壁和第一定位部的底面紧密抵接。
其中，背光模组还包括一反射片，反射片设置在导光板的底面和铝挤之间且反射片跨铺至铝挤的第一侧壁上。
其中，第一定位部包括自导光板本体部的底面朝向入光面的底端倾斜延伸的第一倾斜面，第一倾斜面远离导光板本体部的一端与入光面的底端相接；定位槽包括平行于第一倾斜面的第一侧壁和平行于入光面的第二侧壁，第一侧壁和第二侧壁在定位槽的底部倾斜相交；其中，第一侧壁和第一倾斜面紧密抵接，第二侧壁和入光面紧密抵接。
其中，导光板还包括沿导光板本体部向胶框延伸的第二定位部，胶框在对应第二定位部设置有接合部，第二定位部和接合部紧密抵接。
其中，第二定位部包括沿导光体本体部的顶面向入光面的顶端倾斜延伸的第二倾斜面，接合部包括平行第二倾斜面设置的接合面，接合面与倾斜面紧密抵接。
其中，背光模组进一步包括一缓冲材料，缓冲材料为具有反射功能的缓冲材料，缓冲材料设置在第二倾斜面和接合面之间。
其中，第一定位部和第二定位部为注射成型，第一定位部和第二定位部上下对称设置。
其中，背光模组包括一光源，光源固定设置在铝挤朝向导光板的入光面的侧壁上。
本发明的有益效果是：与现有技术相比，本发明的背光模组与液晶显示器采用导光板和铝挤、胶框的直接配合来固定导光板，提高了导光板固定的稳定性，从而提高了耦光间隙的稳定性，其结构简单，并由于减少了导光板定位零件而节省了制造成本。
【附图说明】
图1是现有技术背光模组的截面示意图；
图2是本发明背光模组第一实施例的截面示意图；
图3是图2背光模组中导光板和铝挤在拆分状态下的截面示意图；
图4是本发明背光模组第二实施例的截面示意图；
图5是图4背光模组中导光板和铝挤在拆分状态下的截面示意图。
【具体实施方式】
下面结合附图和实施例对本发明进行详细说明。
请参照图2，本发明实施例提供了一种背光模组，该背光模组包括胶框1、导光板2、铝挤3、光源4和反射片5。
胶框1和铝挤3上下夹持以固定导光板2，导光板2设置在铝挤3上，光源4固定设置在铝挤3上并位于导光板2的右侧。反射片5设置在导光板2和铝挤3之间。
请一并参照图3，导光板2包括一入光面21、一出光面22、一底面23、导光板本体部25以及沿导光板本体部25向铝挤3延伸的第一定位部26。
其中，入光面21包括顶端211和底端212。出光面22与入光面21的顶端211相连，底面23与入光面21的底端212相连，出光面22与底面23相对设置。该入光面21接收来自光源4的光线，并将其导入导光板2内，出光面22将光线导出导光板2。
铝挤3在对应第一定位部26处设置有定位槽36。第一定位部26紧密装配在定位槽36中，以对导光板2进行固定。
具体来说，第一定位部26包括第一倾斜面261和底面262。其中，第一倾斜面261为自导光板本体部25的底面朝向入光面21的底端212倾斜延伸的倾斜面。第一倾斜面261远离导光板本体部25的一端与入光面21的底端212通过第一定位部26的底面262相连。
定位槽36包括底壁363、间隔设置在底壁363两端的第一侧壁361和第二侧壁362。底壁363连接第一侧壁361和第二侧壁362。第一侧壁361和第一倾斜面261平行设置，第二侧壁362和入光面21平行设置，底壁363和底面262平行设置。第一侧壁361和第一倾斜面261紧密抵接，第二侧壁362和入光面21紧密抵接，底壁363和底面262紧密抵接。
在本实施例中，第一定位部26在截面示意图上呈梯形。
在本实施例中，反射片5设置在导光板主体25的底面和铝挤3之间并跨铺至铝挤3的第一侧壁361上，实际应用中，反射片5也可以跨铺至第一定位部26的第一倾斜面261上，将导光板2漏出的光线反射至导光板2，提高光线的利用率，并同时起到对导光板2进行缓冲的作用。
优选地，在本实施例中，背光模组还包括一缓冲材料6，缓冲材料6设置在胶框1和导光板2之间，与胶框1一起压住导光板2的出光面22，使第一定位部26和定位槽36紧密抵接，进一步提高固定导光板的稳定性，并对导光板2进行缓冲。
在本实施例中，铝挤3还包括底部31、顶部32、侧部33、安装槽34，凸起35。底部31上设置有凸起的顶部32，用于支撑导光板主体25。底部31的一侧具有垂直于该底部31设置的侧部33，光源4固定设置在侧部33上。定位槽36和安装槽34间隔设置在顶部32上，光源4设置在安装槽34内。凸起35设置在定位槽36和安装槽34之间，进一步地，凸起35位于光源4和导光板2之间，且与导光板2的入光面21抵接，用于防止导光板2过于靠近光源4而损坏光源4。在本实施例中，凸起35与导光板2的非入射区域接触，而未接触导光板入光面21的有效利用区域，不会影响背光模组的入射效果。
请参照图4，本发明实施例提供了另一种背光模组，该背光模组包括胶框51、导光板52、铝挤53、光源54和反射片55。
光源54、反射片55和第一实施例背光模组中的光源4、反射片5类似，在此不再赘述。
请一并参照图5，导光板52包括一入光面521、一出光面522、一底面523、导光板本体部525以及沿导光板本体部525向铝挤53延伸的第一定位部526。
铝挤53在对应第一定位部526处设置有定位槽536。第一定位部526紧密装配在定位槽536中，以对导光板52进行固定。
具体来说，第一定位部526包括自导光板本体部525的底面朝向入光面521的底端5212倾斜延伸的第一倾斜面5261。第一倾斜面5261远离导光板本体部525的一端和入光面521的底端5212相接。定位槽536包括第一侧壁5361和第二侧壁5362。在对应第一定位部526的定位槽536中，第一侧壁5361与第一倾斜面5261平行设置，第二侧壁5362与入光面521平行设置，第一侧壁5361和第二侧壁5362在定位槽536的底部倾斜相交。第一侧壁5361和第一倾斜面5261紧密抵接，第二侧壁5362和入光面521紧密抵接。
在本实施例中，第一定位部526在截面示意图上呈三角形。在其他实施例中，第一定位部526在截面示意图上还可以呈长方形等等，具体的实现方式类似，在此不再赘述。
在本实施例中，进一步地，背光模组的导光板52还包括沿导光板本体部525向胶框51延伸的第二定位部527，第一定位部526与第二定位部527为注射成型。胶框51在对应第二定位部527设置有接合部511。第二定位部527和接合部511紧密抵接，进一步提高固定导光板的稳定性。
具体来说，第二定位部527包括第二倾斜面5271，第二倾斜面5271为沿导光体本体部525的顶面向入光面521的顶端5211倾斜延伸的倾斜面。接合部511包括接合面5111。接合面5111与第二倾斜面5271平行设置，接合面5111和第二倾斜面5271紧密抵接。
优选地，第二定位部527和第一定位部526对称设置，进一步提高固定导光板52的稳定性。
进一步地，背光模组还包括一缓冲材料7，缓冲材料7设置在胶框51的接合面5111和导光板52的第二倾斜面5271之间，以对导光板52进行缓冲。在实际应用中，缓冲材料7可以设置在胶框51上，也可以设置在导光板52上；缓冲材料7可以为不同的材料，例如，硅胶、橡胶等等；缓冲材料7可以使用多种方式设置在胶框51或者导光板52上，例如，可以使用双面胶粘贴在胶框51或者导光板52上，或者通过在胶框51或者导光板52上设置开槽直接卡合在开槽内等等。
在本实施例中，优选地，缓冲材料7为具有反射功能的缓冲材料，用于将从第二倾斜面5271漏出的光线反射至导光板52，以提高光线的利用率。
请参照图5，在本实施例中，铝挤53还包括底部531、顶部532、侧部533、安装槽534，凸起535。
铝挤53的底部531、顶部532、侧部533、安装槽534，凸起535与第一实施例背光模组中铝挤3的底部31、顶部32、侧部33、安装槽34，凸起35类似，在此不再赘述。
本发明进一步提供一种液晶显示器，包括了本发明实施例的背光模组。
本发明的有益效果是：与现有技术相比，本发明的背光模组与液晶显示器采用导光板和铝挤、胶框的直接配合来固定导光板，提高了导光板固定的稳定性，从而提高了耦光间隙的稳定性，其结构简单，并由于减少了导光板定位零件而节省了制造成本。
以上所述仅为本发明的实施方式，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等效流程变换，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，其中，所述背光模组包括胶框、导光板和铝挤，所述胶框和所述铝挤上下夹持以固定所述导光板，其中，所述导光板设置在所述铝挤上，其包括导光板本体部、沿所述导光板本体部向所述铝挤延伸的第一定位部以及沿所述导光板本体部向所述胶框延伸的第二定位部；所述铝挤在对应所述第一定位部处设置有定位槽，且所述第一定位部紧密装配于所述定位槽中；所述胶框在对应所述第二定位部设置有接合部，所述第二定位部和所述接合部紧密抵接；
    所述第一定位部包括自所述导光板本体部的底面朝向入光面的底端倾斜延伸的第一倾斜面，所述第一倾斜面远离所述导光板本体部的一端与所述入光面的所述底端通过所述第一定位部的底面相连；
    所述定位槽包括底壁、间隔设置在所述底壁两端的第一侧壁和第二侧壁，其中，所述第一侧壁平行于所述第一倾斜面，所述第二侧壁平行于所述入光面，所述底壁平行于所述第一定位部的底面；
    其中，所述第一侧壁与所述第一倾斜面紧密抵接，所述第二侧壁和所述入光面紧密抵接，所述底壁和所述第一定位部的底面紧密抵接。
  2. 根据权利要求1所述的背光模组，其中，所述背光模组还包括一反射片，所述反射片设置在所述导光板的底面和所述铝挤之间且所述反射片跨铺至所述铝挤的所述第一侧壁上。
  3. 一种背光模组，其中，所述背光模组包括胶框、导光板和铝挤，所述胶框和所述铝挤上下夹持以固定所述导光板，其中，所述导光板设置在所述铝挤上，其包括导光板本体部以及沿所述导光板本体部向所述铝挤延伸的第一定位部；所述铝挤在对应所述第一定位部处设置有定位槽，且所述第一定位部紧密装配于所述定位槽中。
  4. 根据权利要求3所述的背光模组，其中，所述第一定位部包括自所述导光板本体部的底面朝向入光面的底端倾斜延伸的第一倾斜面，所述第一倾斜面远离所述导光板本体部的一端与所述入光面的所述底端通过所述第一定位部的底面相连；
    所述定位槽包括底壁、间隔设置在所述底壁两端的第一侧壁和第二侧壁，其中，所述第一侧壁平行于所述第一倾斜面，所述第二侧壁平行于所述入光面，所述底壁平行于所述第一定位部的底面；
    其中，所述第一侧壁与所述第一倾斜面紧密抵接，所述第二侧壁和所述入光面紧密抵接，所述底壁和所述第一定位部的底面紧密抵接。
  5. 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一反射片，所述反射片设置在所述导光板的底面和所述铝挤之间且所述反射片跨铺至所述铝挤的所述第一侧壁上。
  6. 根据权利要求3所述的背光模组，其中，所述第一定位部包括自所述导光板本体部的底面朝向所述入光面的底端倾斜延伸的第一倾斜面，所述第一倾斜面远离所述导光板本体部的一端与所述入光面的所述底端相接；
    所述定位槽包括平行于所述第一倾斜面的第一侧壁和平行于所述入光面的第二侧壁，所述第一侧壁和所述第二侧壁在所述定位槽的底部倾斜相交；
    其中，所述第一侧壁和所述第一倾斜面紧密抵接，所述第二侧壁和所述入光面紧密抵接。
  7. 根据权利要求3所述的背光模组，其中，所述导光板还包括沿所述导光板本体部向所述胶框延伸的第二定位部，所述胶框在对应所述第二定位部设置有接合部，所述第二定位部和所述接合部紧密抵接。
  8. 根据权利要求7所述的背光模组，其中，所述第二定位部包括沿所述导光体本体部的顶面向所述入光面的顶端倾斜延伸的第二倾斜面，所述接合部包括平行所述第二倾斜面设置的接合面，所述接合面与所述倾斜面紧密抵接。
  9. 根据权利要求8所述的背光模组，其中，所述背光模组进一步包括一缓冲材料，所述缓冲材料为具有反射功能的缓冲材料，所述缓冲材料设置在所述第二倾斜面和所述接合面之间。
  10. 根据权利要求7所述的背光模组，其中，所述第一定位部和所述第二定位部为注射成型，所述第一定位部和所述第二定位部上下对称设置。
  11. 根据权利要求3所述的背光模组，其中，所述背光模组包括一光源，所述光源固定设置在所述铝挤朝向所述导光板的入光面的侧壁上。
  12. 一种液晶显示器，其中，所述液晶显示器包括背光模组，所述背光模组包括胶框、导光板和铝挤，所述胶框和所述铝挤上下夹持以固定所述导光板，其中，所述导光板设置在所述铝挤上，其包括导光板本体部以及沿所述导光板本体部向所述铝挤延伸的第一定位部；所述铝挤在对应所述第一定位部处设置有定位槽，且所述第一定位部紧密装配于所述定位槽中。
  13. 根据权利要求12所述的液晶显示器，其中，所述第一定位部包括自所述导光板本体部的底面朝向入光面的底端倾斜延伸的第一倾斜面，所述第一倾斜面远离所述导光板本体部的一端与所述入光面的所述底端通过所述第一定位部的底面相连；
    所述定位槽包括底壁、间隔设置在所述底壁两端的第一侧壁和第二侧壁，其中，所述第一侧壁平行于所述第一倾斜面，所述第二侧壁平行于所述入光面，所述底壁平行于所述第一定位部的底面；
    其中，所述第一侧壁与所述第一倾斜面紧密抵接，所述第二侧壁和所述入光面紧密抵接，所述底壁和所述第一定位部的底面紧密抵接。
  14. 根据权利要求13所述的液晶显示器，其中，所述背光模组还包括一反射片，所述反射片设置在所述导光板的底面和所述铝挤之间且所述反射片跨铺至所述铝挤的所述第一侧壁上。
  15. 根据权利要求12所述的液晶显示器，其中，所述第一定位部包括自所述导光板本体部的底面朝向所述入光面的底端倾斜延伸的第一倾斜面，所述第一倾斜面远离所述导光板本体部的一端与所述入光面的所述底端相接；
    所述定位槽包括平行于所述第一倾斜面的第一侧壁和平行于所述入光面的第二侧壁，所述第一侧壁和所述第二侧壁在所述定位槽的底部倾斜相交；
    其中，所述第一侧壁和所述第一倾斜面紧密抵接，所述第二侧壁和所述入光面紧密抵接。
  16. 根据权利要求12所述的液晶显示器，其中，所述导光板还包括沿所述导光板本体部向所述胶框延伸的第二定位部，所述胶框在对应所述第二定位部设置有接合部，所述第二定位部和所述接合部紧密抵接。
  17. 根据权利要求16所述的液晶显示器，其中，所述第二定位部包括沿所述导光体本体部的顶面向所述入光面的顶端倾斜延伸的第二倾斜面，所述接合部包括平行所述第二倾斜面设置的接合面，所述接合面与所述倾斜面紧密抵接。
  18. 根据权利要求17所述的液晶显示器，其中，所述背光模组进一步包括一缓冲材料，所述缓冲材料为具有反射功能的缓冲材料，所述缓冲材料设置在所述第二倾斜面和所述接合面之间。
  19. 根据权利要求16所述的液晶显示器，其中，所述第一定位部和所述第二定位部为注射成型，所述第一定位部和所述第二定位部上下对称设置。
  20. 根据权利要求12所述的液晶显示器，其中，所述背光模组包括一光源，所述光源固定设置在所述铝挤朝向所述导光板的入光面的侧壁上。
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