WO2014047965A1 - 一种反射片、背光模组及液晶显示器 - Google Patents

一种反射片、背光模组及液晶显示器 Download PDF

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Publication number
WO2014047965A1
WO2014047965A1 PCT/CN2012/082670 CN2012082670W WO2014047965A1 WO 2014047965 A1 WO2014047965 A1 WO 2014047965A1 CN 2012082670 W CN2012082670 W CN 2012082670W WO 2014047965 A1 WO2014047965 A1 WO 2014047965A1
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WO
WIPO (PCT)
Prior art keywords
backlight
reflective
unit
disposed
long sides
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Application number
PCT/CN2012/082670
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English (en)
French (fr)
Inventor
张彦学
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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 DE112012006846.7T priority Critical patent/DE112012006846B4/de
Priority to US13/697,008 priority patent/US20140085867A1/en
Publication of WO2014047965A1 publication Critical patent/WO2014047965A1/zh

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    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • G02B6/0085—Means for removing heat created by the light source from 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
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/34—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 reflector

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a reflective sheet, a backlight module, and a liquid crystal display.
  • a conventional backlight module includes a back plate 10, a reflective sheet 11, a backlight 12, and a light guide plate (not shown).
  • the reflective sheet is generally located on the bottom surface of the light guide plate for reflecting the light leaked from the bottom surface of the light guide plate back into the light guide plate to increase the efficiency of use of the light.
  • the reflection sheet 11 is disposed on the back sheet 10.
  • a material having high temperature resistance is selected to produce the reflection sheet 11, and the cost of the reflection sheet 11 is relatively high.
  • the technical problem mainly solved by the present invention is to provide a reflective sheet, a backlight module and a liquid crystal display which are lower in cost.
  • a technical solution adopted by the present invention is to provide a backlight module, which includes a backplane, at least one backlight and a reflective sheet, the reflective sheet is disposed on the back panel, and the backlight is disposed at At least one side of the reflective sheet;
  • the reflective sheet includes a first reflective unit and a second reflective unit disposed adjacent to each other, the first reflective unit is disposed adjacent to the backlight, and the second reflective unit is coupled to the first reflective unit and disposed away from the backlight, wherein
  • the materials of the first reflecting unit and the second reflecting unit are different, so that the high-temperature resistance of the first reflecting unit is better than that of the second reflecting unit;
  • the reflecting sheet comprises two long sides arranged in parallel with each other and two mutually parallel and respectively The short side of the long side is vertically disposed, the backlight comprises a first backlight, and the first backlight is disposed on one side of one of the short sides; in the light exiting direction of the backlight, the width of the first reflecting unit is less than The width
  • the back plate includes a positioning bump.
  • the first reflection unit is provided with a through hole at a position corresponding to the positioning protrusion, and the positioning protrusion is disposed in the through hole to position the first reflection unit.
  • the second reflecting unit is pasted on the backboard by double-sided tape.
  • a backlight module which includes a backplane, at least one backlight and a reflective sheet, and the reflective sheet is disposed on the backplane, and the backlight is disposed.
  • the reflective sheet On the at least one side of the reflective sheet; the reflective sheet includes a first reflective unit and a second reflective unit disposed adjacent to each other, the first reflective unit is disposed adjacent to the backlight, and the second reflective unit is coupled to the first reflective unit and disposed away from the backlight.
  • the material of the first reflecting unit and the second reflecting unit are different, so that the high-temperature resistance of the first reflecting unit is better than that of the second reflecting unit.
  • the reflective sheet comprises two long sides arranged in parallel with each other and two short sides which are parallel to each other and respectively disposed perpendicularly to the long sides
  • the backlight comprises a first backlight
  • the first backlight is disposed on one of the short sides One side of the side.
  • the reflective sheet comprises two long sides arranged in parallel with each other and two short sides which are parallel to each other and respectively disposed perpendicularly to the long sides
  • the backlight comprises a first backlight
  • the first backlight is disposed on one of the long sides One side of the side.
  • the reflective sheet includes two long sides arranged in parallel with each other and two short sides which are parallel to each other and respectively disposed perpendicularly to the long sides.
  • the backlight comprises a first backlight and a second backlight, respectively disposed in two The outer side of the short side, the second reflecting unit is disposed between the two first reflecting units.
  • the reflective sheet includes two long sides arranged in parallel with each other and two short sides which are parallel to each other and respectively disposed perpendicularly to the long sides.
  • the backlight comprises a first backlight and a second backlight, respectively disposed in two The outer side of the long side, the second reflecting unit is disposed between the two first reflecting units.
  • the width of the first reflecting unit is smaller than the width of the second reflecting unit.
  • the back plate includes a positioning bump.
  • the first reflection unit is provided with a through hole at a position corresponding to the positioning protrusion, and the positioning protrusion is disposed in the through hole to position the first reflection unit.
  • the second reflecting unit is pasted on the backboard by double-sided tape.
  • the liquid crystal display includes a backlight module, the backlight module includes a back plate, at least one backlight and a reflective sheet, and the reflective sheet is disposed on the back The backlight is disposed on at least one side of the reflective sheet; the reflective sheet includes a first reflective unit and a second reflective unit disposed adjacent to each other, the first reflective unit is disposed adjacent to the backlight, and the second reflective unit is coupled to the first reflective unit And away from the backlight setting, wherein the materials of the first reflecting unit and the second reflecting unit are different, so that the high temperature performance of the first reflecting unit is better than the second reflecting unit.
  • the reflective sheet comprises two long sides arranged in parallel with each other and two short sides which are parallel to each other and respectively disposed perpendicularly to the long sides
  • the backlight comprises a first backlight
  • the first backlight is disposed on one of the short sides One side of the side.
  • the reflective sheet comprises two long sides arranged in parallel with each other and two short sides which are parallel to each other and respectively disposed perpendicularly to the long sides
  • the backlight comprises a first backlight
  • the first backlight is disposed on one of the long sides One side of the side.
  • the reflective sheet includes two long sides arranged in parallel with each other and two short sides which are parallel to each other and respectively disposed perpendicularly to the long sides.
  • the backlight comprises a first backlight and a second backlight, respectively disposed in two The outer side of the short side, the second reflecting unit is disposed between the two first reflecting units.
  • the reflective sheet includes two long sides arranged in parallel with each other and two short sides which are parallel to each other and respectively disposed perpendicularly to the long sides.
  • the backlight comprises a first backlight and a second backlight, respectively disposed in two The outer side of the long side, the second reflecting unit is disposed between the two first reflecting units.
  • the width of the first reflecting unit is smaller than the width of the second reflecting unit.
  • the back plate includes a positioning bump.
  • the first reflection unit is provided with a through hole at a position corresponding to the positioning protrusion, and the positioning protrusion is disposed in the through hole to position the first reflection unit.
  • the second reflecting unit is pasted on the backboard by double-sided tape.
  • another technical solution adopted by the present invention is to provide a reflective sheet, the reflective sheet includes at least a first reflecting unit and a second reflecting unit, wherein the materials of the first reflecting unit and the second reflecting unit are different The high temperature performance of the first reflecting unit is made better than that of the second reflecting unit.
  • the invention has the beneficial effects that the reflective sheet, the backlight module and the liquid crystal display of the present invention use two first reflective units and second reflective units of different materials to form a reflective sheet, wherein the backlight is close to the prior art.
  • the first reflective unit of the source has better high temperature resistance than the second reflective unit disposed away from the backlight.
  • the cost of the second reflective unit is lower than the cost of the first reflective unit, so that the reflective sheet is normally operated. Under the premise, the cost of the reflective sheet is reduced, thereby reducing the cost of the backlight module and the liquid crystal display using the reflective sheet.
  • FIG. 1 is a schematic structural view of a backlight module of the prior art
  • FIG. 2 is a schematic structural view of a liquid crystal display of the present invention
  • FIG. 3 is a partial structural schematic view of a backlight module according to a first embodiment of the present invention.
  • FIG. 4 is a partially exploded perspective view of the backlight module of FIG. 3;
  • Figure 5 is a partial enlarged view of the first reflecting unit of Figure 3 positioned on the backboard;
  • FIG. 6 is a partial structural schematic view of a backlight module according to a second embodiment of the present invention.
  • FIG. 7 is a partial structural schematic view of a backlight module according to a third embodiment of the present invention.
  • FIG. 8 is a partial structural schematic view of a backlight module according to a fourth embodiment of the present invention.
  • the liquid crystal display 1 includes a backlight module 2 and a liquid crystal panel 3.
  • the backlight module 2 is mainly used to provide uniform and high-intensity light to the liquid crystal panel 3, so that the image can be normally displayed.
  • the backlight module 200 includes a back plate 20, a reflective sheet 21, and a backlight 22.
  • the backplane 20 serves as a supporting structure for the entire backlight module 200 for protecting the optical components such as the reflective sheet 21 and the backlight 22 of the backlight module 200 and the mechanical strength required for providing the backlight module 200.
  • the reflective sheet 21 is disposed on the back plate 20 for reflecting light leaking from the bottom of the light guide plate back to the light guide plate to improve the utilization of light.
  • the reflective sheet 21 includes a first reflective unit 211 and a second reflective unit 212.
  • the backlight 22 is disposed on one side of the reflective sheet 21 and is a side-in type backlight.
  • FIG. 4 is a partially exploded perspective view of the backlight module of FIG. 3.
  • the reflection sheet 21 includes two long sides 213a, 213b and two short sides 214a, 214b.
  • the two long sides 213a, 213b are parallel to each other, the two short sides 214a, 214b are parallel to each other, and the two short sides 214a, 214b are respectively disposed perpendicularly to the two long sides 213a, 213b to form a rectangular reflection sheet 21 .
  • the backlight 22 includes a first backlight 221 disposed on one side of one of the short sides 214a.
  • the first reflective unit 211 and the second reflective unit 212 are disposed adjacent to each other.
  • the first reflective unit 211 is disposed adjacent to the first backlight 221
  • the second reflective unit 212 is coupled to the first reflective unit 211 and disposed away from the first backlight 221 .
  • the backlight module 200 a portion having a higher temperature is concentrated near the first backlight 221 .
  • the high temperature resistance of the first reflection unit 211 close to the first backlight 221 is better than the high temperature resistance of the second reflection unit 212 away from the first backlight 221 .
  • the high temperature resistance of the reflector is related to the material used in the reflector, the material is different, and the high temperature resistance is also different. At the same time, the unit price of materials with high temperature resistance is relatively more expensive.
  • the first reflecting unit 211 is made of a material having higher temperature resistance than the second reflecting unit 212.
  • the width W1 of the first reflection unit 211 and the width W2 of the second reflection unit 212 may be set as needed in the light emission direction of the first backlight 221, and preferably W1 is smaller than W2. Since the unit price of the material having high temperature resistance is relatively more expensive, the smaller the W1 is, the lower the cost of the first reflection unit 211 is, and the lower the cost of the reflection sheet 21 is, on the premise of ensuring the normal operation of the reflection sheet 21.
  • Figure 5 is a partial enlarged view of the first reflecting unit of Figure 3 positioned on the backing plate.
  • the back plate 20 includes a positioning protrusion 201.
  • the first reflection unit 211 is provided with a through hole (not shown) at a position corresponding to the positioning protrusion 201.
  • the positioning protrusion 201 is disposed in the through hole to be opposite.
  • the first reflecting unit 211 is positioned.
  • the positioning bump 201 is formed by stamping the backing plate 20 and is disposed near the edge of the backing plate 20.
  • the interior of the backlight module 200 is divided into a visible area and a non-visible area.
  • the position of the peripheral edge of the back panel 20 belongs to the non-visible area of the backlight module 200, and the positioning bump 201 is disposed in the non-visible area of the backlight module 200.
  • the overall optical display quality of the backlight module 200 is not affected.
  • the second reflecting unit 212 is pasted on the backboard 20 by double-sided tape.
  • the position of the double-sided tape near the edge of the back plate 20 does not affect the overall optical display quality of the backlight module 200.
  • the first reflective unit 211 and the second reflective unit 212 of two different materials are used to form the reflective sheet 21, wherein the first reflective unit 211 disposed adjacent to the first backlight 221 is farther away.
  • the second reflective unit 212 provided by the first backlight 221 has better high temperature resistance performance, and at the same time, the cost of the second reflective unit 212 is lower than the cost of the first reflective unit 211, so that the reflective sheet 21 is guaranteed to operate normally.
  • the cost of the reflective sheet 21 is reduced, thereby reducing the cost of the backlight module 200.
  • FIG. 6 is a partial structural schematic view of a backlight module according to a second embodiment of the present invention.
  • the backlight module 300 includes a reflective sheet 31 and a backlight 32.
  • the main difference between the backlight module 300 and the embodiment shown in FIG. 3 is that:
  • the backlight 32 includes a first backlight 321 disposed on one side of one of the long sides 313 of the reflective sheet 31.
  • FIG. 7 is a partial structural schematic view of a backlight module according to a third embodiment of the present invention.
  • the backlight module 400 includes a reflective sheet 41 and a backlight 42.
  • the main difference between the backlight module 400 and the embodiment shown in FIG. 3 is that:
  • the backlight 42 includes a first backlight 421 and a second backlight 422.
  • the first backlight 421 and the second backlight 422 are respectively disposed outside the two short sides 413a, 413b of the reflective sheet 41.
  • the second reflection unit 412 is disposed between the two first reflection units 411a, 411b, and the two first reflection units 411a, 411b are disposed adjacent to the first backlight 421 and the second backlight 422, respectively.
  • the materials of the first reflecting unit 411a, 411b and the second reflecting unit 412 are different.
  • the two first reflecting units 411a, 411b adjacent to the first backlight 421 and the second backlight 422 have better high temperature resistance.
  • the material of the second reflection unit 412 is made of a material having high temperature resistance.
  • the two first reflecting units 411a, 411b may also adopt different materials with high temperature resistance, which may be determined according to the temperature in the vicinity of the first backlight 421 and the second backlight 422. For example, if the temperature near the first backlight 421 is higher than the temperature of the second backlight 422, the first reflective unit 411a near the first backlight 421 may adopt a higher temperature resistance than the first reflection near the second backlight 422. The material of the unit 411b.
  • FIG. 8 is a partial structural schematic view of a backlight module according to a fourth embodiment of the present invention.
  • the backlight module 500 includes a reflective sheet 51 and a backlight 52.
  • the main difference between the backlight module 500 and the embodiment shown in FIG. 6 is that:
  • the backlight 52 includes a first backlight 521 and a second backlight 522, and the first backlight 521 and the second backlight 522 are respectively disposed outside the two long sides 513a, 513b of the reflective sheet 51.
  • the invention has the beneficial effects that the reflective sheet, the backlight module and the liquid crystal display of the present invention use two first reflective units and second reflective units of different materials to form a reflective sheet, wherein the backlight is close to the prior art.
  • the first reflective unit of the source has better high temperature resistance than the second reflective unit disposed away from the backlight.
  • the cost of the second reflective unit is lower than the cost of the first reflective unit, so that the reflective sheet is normally operated. Under the premise, the cost of the reflective sheet is reduced, thereby reducing the cost of the backlight module and the liquid crystal display using the reflective sheet.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

提供了一种反射片（21）、背光模组（200）和液晶显示器（1）。该反射片（21）至少包括第一反射单元（211）和第二反射单元（212），其中，第一反射单元（211）和第二反射单元（212）的材质不同，使得第一反射单元（211）的抗高温性能优于第二反射单元（212），同时，第二反射单元（212）的成本比第一反射单元（211）的成本低。本发明采用两种不同材质的第一反射单元（211）和第二反射单元（212）来形成反射片（21），在保证反射片（21）正常工作的前提下，减少了反射片（21）的成本，从而减少了采用该反射片（21）的背光模组（200）和液晶显示器（1）的成本。

Description

一种反射片、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，特别涉及一种反射片、背光模组及液晶显示器。
【背景技术】
图1是现有技术背光模组的结构示意图，如图1所示，一种现有的背光模组包括背板10、反射片11、背光源12和导光板（未图示）等。在背光模组中，反射片一般位于导光板的底面，用于将导光板的底面漏出的光反射回导光板中，以增加光的使用效率。如图1所示，反射片11设置在背板10上，通常选择抗高温性能好的材质来制作反射片11，反射片11的成本相对较高。
【发明内容】
本发明主要解决的技术问题是提供一种成本较低的反射片、背光模组及液晶显示器。
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，该背光模组包括背板、至少一背光源和反射片，反射片设置在背板上，背光源设置在反射片的至少一侧；反射片包括相邻设置的第一反射单元和第二反射单元，第一反射单元靠近背光源设置，第二反射单元与第一反射单元衔接且远离背光源设置，其中，第一反射单元和第二反射单元的材质不同，使得第一反射单元的抗高温性能优于第二反射单元；反射片包括两个相互平行设置的长侧边和两个相互平行且分别与长侧边垂直设置的短侧边，背光源包括第一背光源，第一背光源设置在其中一个短侧边的一侧；在背光源的光出射方向上，第一反射单元设置的宽度小于第二反射单元设置的宽度。
其中，背板上包括一定位凸点，第一反射单元在对应定位凸点的位置设置有通孔，定位凸点穿设于通孔内以对第一反射单元定位。
其中，第二反射单元通过双面胶粘贴在背板上。
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，该背光模组包括背板、至少一背光源和反射片，反射片设置在背板上，背光源设置在反射片的至少一侧；反射片包括相邻设置的第一反射单元和第二反射单元，第一反射单元靠近背光源设置，第二反射单元与第一反射单元衔接且远离背光源设置，其中，第一反射单元和第二反射单元的材质不同，使得第一反射单元的抗高温性能优于第二反射单元。
其中，反射片包括两个相互平行设置的长侧边和两个相互平行且分别与长侧边垂直设置的短侧边，背光源包括第一背光源，第一背光源设置在其中一个短侧边的一侧。
其中，反射片包括两个相互平行设置的长侧边和两个相互平行且分别与长侧边垂直设置的短侧边，背光源包括第一背光源，第一背光源设置在其中一个长侧边的一侧。
其中，反射片包括两个相互平行设置的长侧边和两个相互平行且分别与长侧边垂直设置的短侧边，背光源包括第一背光源和第二背光源，分别设置在两个短侧边的外侧，第二反射单元设置在两个第一反射单元之间。
其中，反射片包括两个相互平行设置的长侧边和两个相互平行且分别与长侧边垂直设置的短侧边，背光源包括第一背光源和第二背光源，分别设置在两个长侧边的外侧，第二反射单元设置在两个第一反射单元之间。
其中，在背光源的光出射方向上，第一反射单元设置的宽度小于第二反射单元设置的宽度。
其中，背板上包括一定位凸点，第一反射单元在对应定位凸点的位置设置有通孔，定位凸点穿设于通孔内以对第一反射单元定位。
其中，第二反射单元通过双面胶粘贴在背板上。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种液晶显示器，该液晶显示器包括背光模组，背光模组包括背板、至少一背光源和反射片，反射片设置在背板上，背光源设置在反射片的至少一侧；反射片包括相邻设置的第一反射单元和第二反射单元，第一反射单元靠近背光源设置，第二反射单元与第一反射单元衔接且远离背光源设置，其中，第一反射单元和第二反射单元的材质不同，使得第一反射单元的抗高温性能优于第二反射单元。
其中，反射片包括两个相互平行设置的长侧边和两个相互平行且分别与长侧边垂直设置的短侧边，背光源包括第一背光源，第一背光源设置在其中一个短侧边的一侧。
其中，反射片包括两个相互平行设置的长侧边和两个相互平行且分别与长侧边垂直设置的短侧边，背光源包括第一背光源，第一背光源设置在其中一个长侧边的一侧。
其中，反射片包括两个相互平行设置的长侧边和两个相互平行且分别与长侧边垂直设置的短侧边，背光源包括第一背光源和第二背光源，分别设置在两个短侧边的外侧，第二反射单元设置在两个第一反射单元之间。
其中，反射片包括两个相互平行设置的长侧边和两个相互平行且分别与长侧边垂直设置的短侧边，背光源包括第一背光源和第二背光源，分别设置在两个长侧边的外侧，第二反射单元设置在两个第一反射单元之间。
其中，在背光源的光出射方向上，第一反射单元设置的宽度小于第二反射单元设置的宽度。
其中，背板上包括一定位凸点，第一反射单元在对应定位凸点的位置设置有通孔，定位凸点穿设于通孔内以对第一反射单元定位。
其中，第二反射单元通过双面胶粘贴在背板上。
为解决上述技术问题，本发明采用的又一个技术方案是：提供一种反射片，反射片至少包括第一反射单元和第二反射单元，其中，第一反射单元和第二反射单元的材质不同，使得第一反射单元的抗高温性能优于第二反射单元。
本发明的有益效果是：与现有技术相比，本发明的反射片、背光模组及液晶显示器采用两种不同材质的第一反射单元和第二反射单元来形成反射片，其中，靠近背光源设置的第一反射单元较远离背光源设置的第二反射单元具有更佳的抗高温性能，同时，第二反射单元的成本比第一反射单元的成本低，因此在保证反射片正常工作的前提下，减少了反射片的成本，从而也减少了采用该反射片的背光模组和液晶显示器的成本。
【附图说明】
图1是现有技术背光模组的结构示意图；
图2是本发明液晶显示器的结构示意图；
图3是本发明第一实施例的背光模组的部分结构示意图；
图4是图3的背光模组的部分分解示意图；
图5是图3中第一反射单元定位在背板上的局部放大图；
图6是本发明第二实施例的背光模组的部分结构示意图；
图7是本发明第三实施例的背光模组的部分结构示意图；
图8是本发明第四实施例的背光模组的部分结构示意图。
【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。
图2是本发明液晶显示器的结构示意图。如图2所示，液晶显示器1包括背光模组2和液晶面板3。背光模组2主要用于给液晶面板3提供均匀、高亮度的光线，使其能正常显示影像。
图3是本发明第一实施例的背光模组的部分结构示意图。如图3所示，背光模组200包括背板20、反射片21和背光源22。
背板20作为整个背光模组200的支撑结构，用以保护背光模组200的反射片21和背光源22等光学元件以及提供背光模组200所需的机械强度。
反射片21设置在背板20上，用以将导光板底部漏出的光线反射回导光板，提高光线的利用率。本实施例中，反射片21包括第一反射单元211和第二反射单元212。
背光源22设置在反射片21的一侧，为侧入式背光源。
请一并参考图4，图4是图3的背光模组的部分分解示意图。如图4所示，反射片21包括两个长侧边213a，213b和两个短侧边214a，214b。
两个长侧边213a，213b相互平行，两个短侧边214a，214b相互平行，两个短侧边214a，214b分别与两个长侧边213a，213b垂直设置以形成一矩形的反射片21。
背光源22包括第一背光源221，第一背光源221设置在其中一个短侧边214a的一侧。
第一反射单元211和第二反射单元212相邻设置，第一反射单元211靠近第一背光源221设置，第二反射单元212与第一反射单元211衔接且远离第一背光源221设置。
背光模组200中，温度较高的部分集中在第一背光源221附近。本实施例中，靠近第一背光源221的第一反射单元211的抗高温性能优于远离第一背光源221的第二反射单元212的抗高温性能。
反射片的抗高温性能与反射片采用的材质相关，材质不同，抗高温性能也不同。同时，抗高温性能好的材质单价也相对更贵。本实施例中，第一反射单元211采用抗高温性能优于第二反射单元212的材质制作而成。
进一步的，本发明实施例中，在第一背光源221的光出射方向上，第一反射单元211设置的宽度W1和第二反射单元212设置的宽度W2可根据需要进行设置，优选为W1小于W2。因抗高温性能好的材质单价相对更贵，因此，在保证反射片21正常工作的前提下，W1越小，第一反射单元211的成本越低，从而使得反射片21的成本越低。
图5是图3中第一反射单元定位在背板上的局部放大图。如图5所示，背板20包括定位凸点201，第一反射单元211在对应定位凸点201的位置设置有通孔（未图示），定位凸点201穿设于通孔内以对第一反射单元211定位。
定位凸点201由背板20冲压形成，靠近背板20四周边缘的位置设置。背光模组200的内部分为可视区和非可视区，背板20四周边缘的位置属于背光模组200的非可视区，定位凸点201设置在背光模组200的非可视区，不会影响背光模组200的整体光学显示品质。
本实施例中，第二反射单元212通过双面胶粘贴在背板20上。双面胶靠近背板20四周边缘的位置设置，不会影响背光模组200的整体光学显示品质。
承前所述，本发明实施例中，采用两种不同材质的第一反射单元211和第二反射单元212来形成反射片21，其中，靠近第一背光源221设置的第一反射单元211较远离第一背光源221设置的第二反射单元212具有更佳的抗高温性能，同时，第二反射单元212的成本比第一反射单元211的成本低，因此在保证反射片21正常工作的前提下，减少了反射片21的成本，进而降低了背光模组200的成本。
图6是本发明第二实施例的背光模组的部分结构示意图。如图6所示，背光模组300包括反射片31和背光源32。
其中，背光模组300与图3所示的实施例相比，其主要的区别在于：
背光源32包括第一背光源321，第一背光源321设置在反射片31其中一个长侧边313的一侧。
图7是本发明第三实施例的背光模组的部分结构示意图。如图7所示，背光模组400包括反射片41和背光源42。
其中，背光模组400与图3所示的实施例相比，其主要的区别在于：
背光源42包括第一背光源421和第二背光源422，第一背光源421和第二背光源422分别设置在反射片41的两个短侧边413a，413b的外侧。
第二反射单元412设置在两个第一反射单元411a，411b之间，两个第一反射单元411a，411b分别靠近第一背光源421和第二背光源422设置。
第一反射单元411a，411b和第二反射单元412的材质不同，本实施例中，靠近第一背光源421和第二背光源422的两个第一反射单元411a，411b采用抗高温性能较好的材质，第二反射单元412采用抗高温性能一般的材质。
在其它实施例中，两个第一反射单元411a，411b也可分别采用不同抗高温性能的材质，可根据第一背光源421和第二背光源422附近的温度来确定。例如：如果第一背光源421附近的温度高于第二背光源422的温度，靠近第一背光源421的第一反射单元411a可以采用抗高温性能优于靠近第二背光源422的第一反射单元411b的材质。
图8是本发明第四实施例的背光模组的部分结构示意图。如图8所示，背光模组500包括反射片51和背光源52。
其中，背光模组500与图6所示的实施例相比，其主要的区别在于：
背光源52包括第一背光源521和第二背光源522，第一背光源521和第二背光源522分别设置在反射片51的两个长侧边513a，513b的外侧。
本发明的有益效果是：与现有技术相比，本发明的反射片、背光模组及液晶显示器采用两种不同材质的第一反射单元和第二反射单元来形成反射片，其中，靠近背光源设置的第一反射单元较远离背光源设置的第二反射单元具有更佳的抗高温性能，同时，第二反射单元的成本比第一反射单元的成本低，因此在保证反射片正常工作的前提下，减少了反射片的成本，从而也减少了采用该反射片的背光模组和液晶显示器的成本。
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 (17)

  1. 一种背光模组，其中，所述背光模组包括背板、至少一背光源和反射片，所述反射片设置在所述背板上，所述背光源设置在所述反射片的至少一侧；所述反射片包括相邻设置的第一反射单元和第二反射单元，所述第一反射单元靠近所述背光源设置，所述第二反射单元与所述第一反射单元衔接且远离所述背光源设置，其中，所述第一反射单元和所述第二反射单元的材质不同，使得所述第一反射单元的抗高温性能优于所述第二反射单元。
  2. 根据权利要求1所述的背光模组，其中，所述反射片包括两个相互平行设置的长侧边和两个相互平行且分别与所述长侧边垂直设置的短侧边，所述背光源包括第一背光源，所述第一背光源设置在其中一个所述短侧边的一侧。
  3. 根据权利要求1所述的背光模组，其中，所述反射片包括两个相互平行设置的长侧边和两个相互平行且分别与所述长侧边垂直设置的短侧边，所述背光源包括第一背光源，所述第一背光源设置在其中一个所述长侧边的一侧。
  4. 根据权利要求1所述的背光模组，其中，所述反射片包括两个相互平行设置的长侧边和两个相互平行且分别与所述长侧边垂直设置的短侧边，所述背光源包括第一背光源和第二背光源，分别设置在两个所述短侧边的外侧，所述第二反射单元设置在两个所述第一反射单元之间。
  5. 根据权利要求1所述的背光模组，其中，所述反射片包括两个相互平行设置的长侧边和两个相互平行且分别与所述长侧边垂直设置的短侧边，所述背光源包括第一背光源和第二背光源，分别设置在两个所述长侧边的外侧，所述第二反射单元设置在两个所述第一反射单元之间。
  6. 根据权利要求1所述的背光模组，其中，在所述背光源的光出射方向上，所述第一反射单元设置的宽度小于所述第二反射单元设置的宽度。
  7. 根据权利要求1所述的背光模组，其中，所述背板上包括一定位凸点，所述第一反射单元在对应所述定位凸点的位置设置有通孔，所述定位凸点穿设于所述通孔内以对所述第一反射单元定位。
  8. 根据权利要求1所述的背光模组，其中，所述第二反射单元通过双面胶粘贴在所述背板上。
  9. 一种液晶显示器，其中，所述液晶显示器包括背光模组，所述背光模组包括背板、至少一背光源和反射片，所述反射片设置在所述背板上，所述背光源设置在所述反射片的至少一侧；所述反射片包括相邻设置的第一反射单元和第二反射单元，所述第一反射单元靠近所述背光源设置，所述第二反射单元与所述第一反射单元衔接且远离所述背光源设置，其中，所述第一反射单元和所述第二反射单元的材质不同，使得所述第一反射单元的抗高温性能优于所述第二反射单元。
  10. 根据权利要求9所述的液晶显示器，其中，所述反射片包括两个相互平行设置的长侧边和两个相互平行且分别与所述长侧边垂直设置的短侧边，所述背光源包括第一背光源，所述第一背光源设置在其中一个所述短侧边的一侧。
  11. 根据权利要求9所述的液晶显示器，其中，所述反射片包括两个相互平行设置的长侧边和两个相互平行且分别与所述长侧边垂直设置的短侧边，所述背光源包括第一背光源，所述第一背光源设置在其中一个所述长侧边的一侧。
  12. 根据权利要求9所述的液晶显示器，其中，所述反射片包括两个相互平行设置的长侧边和两个相互平行且分别与所述长侧边垂直设置的短侧边，所述背光源包括第一背光源和第二背光源，分别设置在两个所述短侧边的外侧，所述第二反射单元设置在两个所述第一反射单元之间。
  13. 根据权利要求9所述的液晶显示器，其中，所述反射片包括两个相互平行设置的长侧边和两个相互平行且分别与所述长侧边垂直设置的短侧边，所述背光源包括第一背光源和第二背光源，分别设置在两个所述长侧边的外侧，所述第二反射单元设置在两个所述第一反射单元之间。
  14. 根据权利要求9所述的液晶显示器，其中，在所述背光源的光出射方向上，所述第一反射单元设置的宽度小于所述第二反射单元设置的宽度。
  15. 根据权利要求9所述的液晶显示器，其中，所述背板上包括一定位凸点，所述第一反射单元在对应所述定位凸点的位置设置有通孔，所述定位凸点穿设于所述通孔内以对所述第一反射单元定位。
  16. 根据权利要求9所述的液晶显示器，其中，所述第二反射单元通过双面胶粘贴在所述背板上。
  17. 一种反射片，其中，所述反射片至少包括第一反射单元和第二反射单元，其中，所述第一反射单元和所述第二反射单元的材质不同，使得所述第一反射单元的抗高温性能优于所述第二反射单元。
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