WO2012058836A1 - 侧入式背光模块及液晶显示器 - Google Patents

侧入式背光模块及液晶显示器 Download PDF

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Publication number
WO2012058836A1
WO2012058836A1 PCT/CN2010/079445 CN2010079445W WO2012058836A1 WO 2012058836 A1 WO2012058836 A1 WO 2012058836A1 CN 2010079445 W CN2010079445 W CN 2010079445W WO 2012058836 A1 WO2012058836 A1 WO 2012058836A1
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WIPO (PCT)
Prior art keywords
light
backlight module
liquid crystal
guide plate
fixing frame
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PCT/CN2010/079445
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English (en)
French (fr)
Inventor
阙成文
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深圳市华星光电技术有限公司
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Publication of WO2012058836A1 publication Critical patent/WO2012058836A1/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
    • G02F1/1335—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

Definitions

  • the invention relates to a side-in type backlight module and a liquid crystal display, in particular to a side-in type backlight module and a liquid crystal display with thermal isolation function.
  • FIG. 1 is a side cross-sectional view of a conventional side-lit backlight module.
  • the one-side backlight module 90 includes a back plate 91.
  • the side plate portion 911 is disposed on both sides of the back plate heat dissipation structure 91, and a light guide plate 92 is disposed at the center of the back plate 91.
  • An optical film set 93 is disposed on the light guide plate 92, and another plastic frame 94 is wrapped around the outer edge of the back plate 91, and the optical film set 93 and the light guide plate are fixed from top to bottom. 92 to form the side-entry backlight module 90.
  • a liquid crystal panel 80 is further disposed on the side-lit backlight module 90, and the liquid crystal panel 80 and the side-entry backlight module 90 are covered and fixed by a display outer frame 70, that is, a liquid crystal is formed. monitor.
  • the side wall portion 911 of the back plate 91 of the side-lit backlight module 90 is provided with a light-emitting device 95 on the inner surface, and the light-emitting device 95 includes a circuit board 951 and a row.
  • a plurality of light-emitting elements 952 which may be LED light-emitting elements, have a light source direction directed to the light guide plate 92.
  • the light-emitting element 952 is generally fixed to the side wall portion 911 by means of screwing or thermal tape bonding.
  • the above-mentioned prior-inside type backlight module still has a problem that the light-emitting device 95 and the light guide plate 92 and the optical film group 93 are placed in the same space in the conventional side-entry backlight module.
  • the temperature thereof rises rapidly, and the temperature of the partial light guide plate 92 and the optical film group 93 also rises sharply, and the existing light guide plate 92 is sharply increased.
  • the thermal conductivity of the optical film group 93 is not good, and the thermal energy of the light guide plate 92 and the optical film group 93 is concentrated on one end of the light-emitting device 95, and the light guide plate 92 and the optical film group are caused.
  • the temperature difference on the 93 is too large, so that an abnormal phenomenon such as deformation of the light guide plate 92 and the optical film group 93 is caused, thereby affecting the working quality of the side-entry backlight module 90.
  • An object of the present invention is to provide a heat dissipation structure for a light source of a backlight module, that is, to provide a light source heat dissipation structure for the light emitting diode of the backlight module to solve the heat dissipation problem existing in the prior art.
  • the main purpose of the present invention is to provide a side-lit backlight module and a liquid crystal display, wherein at least one light-emitting opening is provided by the circuit board of the light-emitting device disposed on the outer side of the fixing frame and the at least one light-emitting component of the fixing frame corresponding to the light-emitting device. . Therefore, the light-emitting device of the present invention can provide the side light source required for the light guide plate, but can isolate the heat energy generated by most of the light-emitting devices.
  • a secondary object of the present invention is to provide a side-lit backlight module and a liquid crystal display by providing an elastic member on the other end of the light guide plate relative to the light-emitting device to ensure a fixed distance between the light guide plate and the light-emitting device, and providing A stable light source solves the problem of thermal expansion and contraction of the light guide plate.
  • a side-entry backlight module comprising:
  • a fixing frame covering the outer edge of the back plate, fixing the optical film group and the light guide plate on the back plate;
  • a light emitting device comprising a circuit board and at least one light emitting component disposed on the circuit board;
  • the circuit board of the light-emitting device is disposed outside the fixing frame, and the fixing frame is provided with at least one light-in opening corresponding to the at least one light-emitting element, so that the light of the light-emitting element passes through the light-in opening
  • the light guide plate emits.
  • the at least one light-in opening is a closed or open light-in opening.
  • the at least one light emitting element is embedded in the at least one light entrance opening.
  • the material of the fixing frame has thermal insulation properties and/or the inner surface thereof is reflective.
  • the present invention further provides a liquid crystal display of a side-lit backlight module, comprising: a backlight module, a liquid crystal panel, and a display outer frame, wherein the liquid crystal panel is disposed on the backlight module,
  • the display frame covers and fixes the liquid crystal panel and the backlight module;
  • the backlight module includes:
  • a fixing frame covering the outer edge of the back plate, fixing the optical film group and the light guide plate on the back plate;
  • a light emitting device comprising a circuit board and at least one light emitting component disposed on the circuit board;
  • the circuit board of the light-emitting device is disposed outside the fixing frame, and the fixing frame is provided with at least one light-in opening corresponding to the at least one light-emitting element, so that the light of the light-emitting element passes through the light-in opening
  • the light guide plate emits.
  • the circuit board is attached to the inner side of the display frame.
  • the at least one light-in opening is a closed or open light-in opening.
  • the at least one light emitting element is embedded or not embedded in the at least one light incident opening.
  • the material of the fixing frame has thermal insulation properties and/or the inner surface thereof is reflective.
  • the light guide plate is further provided with an elastic member opposite to the other end of the light-emitting device, and the elastic member is supported between the light guide plate and the fixed frame.
  • the light emitting element is a light emitting diode.
  • the light-emitting device of the present invention is provided on the outside of the backlight module, and the light of the light-emitting device can provide the side light source required by the light guide plate through the corresponding light-opening opening on the fixed frame.
  • the heat energy generated by the light-emitting device is isolated from the inner cavity of the backlight module, so that the light guide plate and the optical film group do not cause abnormal phenomena such as deformation due to overheating, thereby ensuring the overall side entry.
  • the working quality of the backlight module is provided on the outside of the backlight module, and the light of the light-emitting device can provide the side light source required by the light guide plate through the corresponding light-opening opening on the fixed frame.
  • the light-emitting device of the present invention is provided on the outside of the backlight module, and the light of the light-emitting device can provide the side light source required by the light guide plate through the corresponding light-opening opening on the fixed frame.
  • the heat energy generated by the light-emitting device is isolated from the inner cavity of the backlight module, so that the light guide plate and the optical film group do not cause abnormal phenomena such as deformation due to overheating, thereby ensuring the overall side entry.
  • the working quality of the backlight module is provided on the outside of the backlight module, and the light of the light-emitting device can provide the side light source required by the light guide plate through the corresponding light-opening opening on the fixed frame.
  • Figure 1 A partial side cross-sectional view of a prior art side-lit backlight module.
  • FIG. 2 is a partial side cross-sectional view of the side-entry backlight module of the first embodiment of the present invention.
  • FIG 3 is a partial exploded perspective view of the side-entry backlight module of the first embodiment of the present invention.
  • FIG. 4 is a partial perspective assembled view of the side-entry backlight module of the first embodiment of the present invention.
  • Fig. 5 is a partially exploded perspective view showing the side-entry backlight module of the second embodiment of the present invention.
  • Figure 6 is a partial side cross-sectional view showing a side-entry backlight module of a third embodiment of the present invention.
  • FIG. 2 is a partial side cross-sectional view showing a side-entry backlight module according to a first embodiment of the present invention
  • FIG. 3 is a partial perspective exploded view of the side-entry backlight module according to the first embodiment of the present invention.
  • FIG. 4 is a partial perspective assembled view of the side-entry backlight module of the first embodiment of the present invention.
  • a side-lit backlight module 10 includes a back plate 11 , a light guide plate 12 , an optical film set 13 , a fixing frame 14 , and a light emitting device 15 .
  • the back plate is a body having a rectangular shape; the light guide plate 12 is disposed on the back plate 11; the optical film group 13 is disposed on the light guide plate 12; The optical film group 13 and the light guide plate 12 are fixed on the back plate 11 so as to be covered on the outer edge of the back plate 11.
  • the light-emitting device 15 includes a circuit board 151 and at least one light-emitting element 152 disposed on the circuit board 151.
  • the circuit board 151 of the illuminating device 15 is disposed outside the fixing frame 14.
  • the fixing frame 14 is provided with at least one light-in opening 141 corresponding to the at least one illuminating element 152, and the illuminating element 152 passes the The light entrance opening 141 emits a light source toward the light guide plate 12.
  • a liquid crystal panel 20 (shown as an imaginary line) is further stacked on the side-entry backlight module 10, and is covered and fixed by a display outer frame 30 (shown as an imaginary line).
  • the liquid crystal panel 20 and the side-entry backlight module 10 constitute a liquid crystal display.
  • the light-emitting element 152 on the light-emitting device 15 of the present invention generally uses a light-emitting diode (LED) element, and in the case of having a plurality of the light-emitting devices 15, it is arranged in a row.
  • LED light-emitting diode
  • the present invention does not limit the number, appearance, shape, and arrangement of the light-emitting elements 152, but basically, the plurality of light-emitting elements 152 have a separation distance therebetween. Therefore, the light entrance opening 141 on the fixing frame 14 is designed corresponding to the shape and the spacing distance of the light emitting element 152.
  • the light-incident opening 141 is a closed shape, and the opening size thereof is suitable for the light of the light-emitting element 152 to pass through, which may also include various states.
  • FIG. 2 shows that the light-emitting element 152 is externally embedded in the light-receiving opening 141 on the fixing frame 14, but does not protrude from the fixing frame 14; or the light-emitting element 152 is The light incident opening 141 is not embedded, and only the light emitted by the light emitting element 152 is embedded in the light incident opening 141 to illuminate the side of the light guide plate 12.
  • the circuit board 151 of the illuminating device 15 is disposed outside the fixing frame 14, the circuit board 151 of the illuminating device 15 is Most of the thermal energy generated by the light-emitting element 152 can be conducted and isolated to the outside of the fixed frame 14, that is, most of the thermal energy does not enter the inner cavity of the backlight block 10. Therefore, the light guide plate 12 and the optical film group 13 in the backlight film block 10 are not subjected to excessive excessive thermal energy, thereby causing an abnormal phenomenon such as deformation of the light guide plate 12 and the optical film group 13 . The working quality of the side-entry backlight module 10 is ensured.
  • the circuit board 151 of the light-emitting device 15 is provided outside the fixing frame 14, when the light-emitting device 15 is repaired, it is not necessary to disassemble the backlight module 10, and the entire device can be removed from the outside.
  • the illuminating device 15 is described, thereby improving the maintenance convenience and effectively preventing the opportunity to cause the light guide plate 12 and the optical film group 13 to be contaminated or damaged when the backlight module 10 is detached. Therefore, the side-entry backlight module and the liquid crystal display of the present invention greatly improve the maintenance, assembly, and heat dissipation efficiency of the backlight module 10.
  • the material of the fixing frame 14 is preferably a material having heat insulation, in particular, a material having good heat insulation properties, such as engineering plastics, and the heat energy generated by the light-emitting device 15 can be more effectively isolated.
  • the inner surface of the fixing frame 14 is preferably reflective, in particular, an inner surface having good reflectivity, such that light on the side of the light guide plate 12 can be reflected back into the light guide plate 12 through the surface. Therefore, the luminous efficacy of the light guide plate 12 can be further improved.
  • the back surface of the circuit board 151 of the light-emitting device 15, that is, the surface facing outward without the light-emitting element 152 being disposed, is preferably attached to the inner side of the display frame 30.
  • the thermal energy generated by the illumination device 15 can be conducted through the display frame 30 to assist in heat dissipation of the backlight module 10.
  • the portion of the display frame 30 that contacts the circuit board 151 is preferably made of a material having good thermal conductivity, so as to further improve the heat dissipation efficiency of the backlight module 10 as a whole.
  • FIG. 5 is a partial exploded perspective view of a side-lit backlight module according to a second embodiment of the present invention.
  • the backlight module 10 of the second embodiment of the present invention is similar to the backlight module 10 of the first embodiment of the present invention, and therefore the same component symbols and names are used, but the difference is that the backlight of the second embodiment of the present invention
  • the fixing frame 14 of the module 10 has an open light-incident opening 141, and the open-shaped light-incident opening 141 is a closed-shaped opening through a matching design corresponding to the inner bottom surface of the back plate 11 .
  • the light passing through the illuminating device 15 can be provided, but the thermal energy generated by most of the illuminating devices 15 is isolated. With such a design, the fixing frame 14 can be more elastic in manufacturing and assembly. ,
  • FIG. 6 is a partial exploded perspective view of a side-lit backlight module according to a third embodiment of the present invention.
  • the backlight module 10 of the third embodiment of the present invention is similar to the backlight module 10 of the first embodiment of the present invention, and therefore the same component symbols and names are used, but the difference is that the light guide plate of the third embodiment of the present invention 12 is further provided with an elastic member 16 with respect to the other end of the light-emitting device 15 (left end in the drawing).
  • the elastic member 16 shown in FIG. 6 is, for example, a spring, but the elastic member of the present invention may be Any material or shape that is elastic, for example, may also be a rubber block.
  • the elastic member 16 Since the elastic member 16 is abutted between the light guide plate 12 and the fixing frame 14, the light guide plate 12 is pressed against one end of the light-emitting device 15 by the elastic force of the elastic member 16. The right end of the figure can be attached to the fixing frame 14. Moreover, since the light guide plate is heated to generate a slight thermal expansion and contraction phenomenon, the elastic member 16 is disposed on a side of the light guide plate 12 where no light source enters to ensure the light guide plate 12 and the light emitting device. The distance of 15 is fixed, providing a stable light source and solving the problem of thermal expansion and contraction of the light guide plate 12.
  • the light-emitting device and the optical film group are placed in the same cavity.
  • the temperature of the local optical film group also rises sharply. High, causing abnormal phenomena such as deformation of the optical film group, thereby affecting the working quality of the overall backlight module.
  • the light-emitting device 15 is disposed outside the backlight module 10, and the light of the light-emitting device 15 can be provided by the corresponding light-opening opening 141 of the fixing frame 14 to provide the light guide plate 12.
  • the side light source however, the thermal energy generated by most of the light-emitting devices 15 is isolated from the inner cavity of the backlight module 10. Therefore, the light guide plate 12 and the optical film group 13 are not deformed due to overheating. The phenomenon ensures the overall quality of operation of the side-lit backlight module 10.

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

Description

侧入式背光模块及液晶显示器 技术领域
本发明涉及一种侧入式背光模块及液晶显示器，特别是涉及一种具有热隔离功能的侧入式背光模块及液晶显示器。
 背景技术
在液晶显示器面板(LCD panel)领域，以发光二极管(LED)做为背光光源比冷阴极荧光灯管(CCFL)具有节能环保等优势，因此以LED取代CCFL将是背光发展的趋势，但LED的散热问题仍是影响其发展的重要因素。请参照图1所示，图1是一种现有侧入式背光模块的侧剖视图。一侧入式背光模块90包含一背板91，所述背板散热构造91的两侧缘上设有侧壁部911，且所述背板91中央承载一导光板92。所述导光板92上设有一光学膜片组93，另有一胶框94包覆于所述背板91的外缘，且由上而下的固定所述光学膜片组93及所述导光板92，以形成所述侧入式背光模块90。另外，于所述侧入式背光模块90上再迭设一液晶面板80，并且以一显示器外框70包覆及固定所述液晶面板80及所述侧入式背光模块90，即组成一液晶显示器。
如图1所示，所述侧入式背光模块90的所述背板91的所述侧壁部911在内表面上设有一发光装置95，所述发光装置95包含一电路板951及排设于所述电路板951上的多个发光元件952，所述发光元件952可以是LED发光元件，且其光源方向指向所述导光板92。所述发光元件952一般通过螺丝锁附或导热胶带粘贴等方式来固定于所述侧壁部911上。
然而，上述的现有侧入式背光模块仍存在一问题，也就是在现有侧入式背光模块中，所述发光装置95与所述导光板92及光学膜片组93是置于同一空腔中，当所述发光装置95运作时，其温度会快速的升高，局部的所述导光板92及光学膜片组93的温度亦会急剧升高，而现有的所述导光板92及光学膜片组93的导热性能都不佳，所述导光板92及光学膜片组93的热能明显集中于靠近所述发光装置95的一端，并导致所述导光板92及光学膜片组93上的温度差过大，因此将会造成所述导光板92及光学膜片组93变形等异常现象，从而影响到所述侧入式背光模块90的工作质量。
因此，有必要提供一种具有热隔离功能的侧入式背光模块，以解决现有技术所存在的问题。
 技术问题
本发明的目的是提供一种背光模块的发光源散热构造，即对背光模块的发光二极管提供一种发光源散热构造，以解决现有技术所存在的散热问题。
本发明的主要目的是提供一种侧入式背光模块及液晶显示器，通过将发光装置的电路板设于固定框的外侧，以及固定框对应发光装置的至少一发光元件设有至少一入光开口。因此本发明的发光装置可提供导光板所需的侧光源，但能隔离大部份发光装置所产生的热能。
本发明的次要目的是提供一种侧入式背光模块及液晶显示器，通过将弹性元件设于导光板相对于所述发光装置的另一端，以确保导光板与发光装置的距离固定，并提供稳定的光源以解决所述导光板热胀冷缩的问题。
 技术解决方案
为达上述目的，本发明提供一种侧入式背光模块，其包含：
一背板；
一导光板，设于所述背板上；
一光学膜片组，设于所述导光板上；
一固定框，包覆于所述背板的外缘，固定所述光学膜片组及所述导光板于所述背板上；及
一发光装置，包含一电路板及设于所述电路板上的至少一发光元件；
所述发光装置的电路板设于所述固定框的外侧，所述固定框对应所述至少一发光元件设有至少一入光开口，以使得所述发光元件的光线通过所述入光开口朝向所述导光板发射。
在本发明的一实施例中，所述至少一入光开口是一封闭状或开放状的入光开口。
在本发明的一实施例中，所述至少一发光元件嵌入所述至少一入光开口。
在本发明的一实施例中，所述固定框的材质具有隔热性或/及其内部表面具有反射性。
为达上述目的，本发明另提供一种侧入式背光模块的液晶显示器，其包含：一背光模块、一液晶面板及一显示器外框，所述液晶面板设于所述背光模块上，所述显示器外框包覆及固定所述液晶面板及所述背光模块；所述背光模块包含：
一背板；
一导光板，设于所述背板上；
一光学膜片组，设于所述导光板上；
一固定框，包覆于所述背板的外缘，固定所述光学膜片组及所述导光板于所述背板上；及
一发光装置，包含一电路板及设于所述电路板上的至少一发光元件；
所述发光装置的电路板设于所述固定框的外侧，所述固定框对应所述至少一发光元件设有至少一入光开口，以使得所述发光元件的光线通过所述入光开口朝向所述导光板发射。
在本发明的一实施例中，所述电路板贴合于所述显示器外框的内侧。
在本发明的一实施例中，所述至少一入光开口是一封闭状或开放状的入光开口。
在本发明的一实施例中，所述至少一发光元件嵌入或不嵌入所述至少一入光开口。
在本发明的一实施例中，所述固定框的材质具有隔热性或/及其内部表面具有反射性。
在本发明的一实施例中，所述导光板相对于所述发光装置的另一端进一步设有一弹性元件，所述弹性元件抵撑于所述导光板及所述固定框之间。
在本发明的一实施例中，所述发光元件为发光二极管。
本发明通过将所述发光装置设于所述背光模块的外部，所述发光装置的光线可通过所述固定框上对应开设的入光开口提供所述导光板所需要的侧光源，然而大部份所述发光装置所产生的热能被隔离于所述背光模块的内腔之外，因此所述导光板及光学膜片组不会因过热导致变形等异常现象，从而确保了整体所述侧入式背光模块的工作质量。
 有益效果
本发明通过将所述发光装置设于所述背光模块的外部，所述发光装置的光线可通过所述固定框上对应开设的入光开口提供所述导光板所需要的侧光源，然而大部份所述发光装置所产生的热能被隔离于所述背光模块的内腔之外，因此所述导光板及光学膜片组不会因过热导致变形等异常现象，从而确保了整体所述侧入式背光模块的工作质量。
附图说明
图1：一种现有侧入式背光模块的局部侧剖视图。
图2：本发明第一实施例的侧入式背光模块的局部侧剖视图。
图3：本发明第一实施例的侧入式背光模块的局部立体分解图。
图4：本发明第一实施例的侧入式背光模块的局部立体组装图。
图5：本发明第二实施例的侧入式背光模块的局部立体分解图。
图6：本发明第三实施例的侧入式背光模块的局部侧剖视图。
 本发明的最佳实施方式
为让本发明上述目的、特征及优点更明显易懂，下文特举本发明较佳实施例，并配合附图，作详细说明如下：
请同时参照图2至图4所示，图2揭示本发明第一实施例的侧入式背光模块的局部侧剖视图；图3揭示本发明第一实施例的侧入式背光模块的局部立体分解图；以及图4揭示本发明第一实施例的侧入式背光模块的局部立体组装图。
如图2至图4所示，一种侧入式背光模块10包含一背板11、一导光板12、一光学膜片组13、一固定框14及一发光装置15。所述背板是一约呈长方形的主体；所述导光板12是设于所述背板11上；所述光学膜片组13是设于所述导光板12上；所述固定框14是包覆于所述背板11的外缘，固定所述光学膜片组13及所述导光板12于所述背板上11。
再者，所述发光装置15包含一电路板151及设于所述电路板151上的至少一发光元件152。所述发光装置15的电路板151是设于所述固定框14的外侧，所述固定框14对应所述至少一发光元件152设有至少一入光开口141，所述发光元件152通过所述入光开口141朝向所述导光板12发射光源。
另外，如图2所示，于所述侧入式背光模块10上再迭设一液晶面板20(假想线所示)，并且以一显示器外框30(假想线所示)包覆及固定所述液晶面板20及所述侧入式背光模块10，即组成一液晶显示器。
如图2至图4所示，本发明的所述发光装置15上的发光元件152一般常使用发光二极管(LED)元件，在具有多个所述发光装置15的情况下，其排列成行的设于所述发光装置15的所述电路板151上，而所述发光装置15一般称为发光二极管灯条(LED Light Bar)。但本发明并不限制所述发光元件152的数量、外观形状、型式及排列方式，但基本上，所述多个发光元件152之间具有一间隔距离。因此，所述固定框14上的所述入光开口141是对应所述发光元件152的形状及间隔距离而设计的。
进一步来说，在本发明的第一个实施例中，所述入光开口141是一封闭状，其开口尺寸适可供所述发光元件152的光线穿过，这还可包含多种状态，例如：图2所示的是所述发光元件152由外向内的嵌入所述固定框14上的所述入光开口141，但不凸出所述固定框14；或者，所述发光元件152并不嵌入所述入光开口141，而只有所述发光元件152所发出的光线嵌入所述入光开口141以照射于所述导光板12的侧边上。
综上所述，所述发光装置15运作的过程中会所产生热能，由于所述发光装置15的电路板151是被设于所述固定框14的外部，所述发光装置15的电路板151与发光元件152所产生的热能大部份都能被传导及隔离到所述固定框14之外部，也就是说大部份的热能不会进入所述背光膜块10的内腔之内。因此，所述背光膜块10内的所述导光板12及光学膜片组13就不会受到局部过多的热能而导致所述导光板12及光学膜片组13产生变形等异常现象，从而确保了所述侧入式背光模块10的工作质量。
并且，也由于所述发光装置15的电路板151是被设于所述固定框14的外部，维修所述发光装置15时并不需要拆开所述背光模块10，即可由外部拆下整个所述发光装置15，从而提高维修便利性及有效防止拆装所述背光模块10时可能产生使所述导光板12及光学膜片组13被污染或损坏的机会。因此，本发明的侧入式背光模块及液晶显示器对所述背光模块10的维修、组装以及提升散热效率都具有很大的改善。
再者，所述固定框14的材质优选是一具有隔热性的材质，特别是一具有良好隔热性的材质，例如工程塑胶，所述发光装置15所产生的热能可更有效的被隔离于所述背光模块10的内腔之外。另外，所述固定框14的内部表面优选具有反射性，特别是具有良好反射性的内部表面，这样所述导光板12侧边上的光线可通过此表面反射回到所述导光板12之内，因此可更加提高所述导光板12的发光效能。
并且，所述发光装置15的所述电路板151的背面，也就是没有设置所述发光元件152而面朝外的表面优选是贴合于所述显示器外框30的内侧。这样，所述发光装置15所产生的热能更可通过所述显示器外框30传导出去，以协助所述背光模块10的散热。更进一步的，所述显示器外框30接触所述电路板151的部份优选是由导热性良好的材质所制成，以便更为提高所述背光模块10整体的散热效率。
请参照图5所示，图5揭示本发明第二实施例的一种侧入式背光模块的局部立体分解图。本发明第二实施例的背光模块10相似于本发明第一实施例的背光模块10，因此沿用相同的组件符号与名称，但其不同之处在于：在本发明第二实施例的所述背光模块10的所述固定框14的具有开放状的入光开口141，并且所述开放状的入光开口141通过与所述背板11的内底面对应的配合设计而成为封闭形的开口，其同样可提供所述发光装置15的光线通过，但隔离了大部份所述发光装置15所产生的热能，通过这样的设计，可使所述固定框14在制造及组装上获得更大的弹性，
请参照图6所示，图6揭示本发明第三实施例的一种侧入式背光模块的局部立体分解图。本发明第三实施例的背光模块10相似于本发明第一实施例的背光模块10，因此沿用相同的组件符号与名称，但其不同之处在于：本发明第三实施例的所述导光板12相对于所述发光装置15的另一端(图中靠左端)还设有一弹性元件16，如图6所示的所述弹性元件16例如是一弹簧，但本发明的所述弹性元件可以是任何具有弹性的材质或形状，例如也可以是橡胶块。由于所述弹性元件16抵撑于所述导光板12及所述固定框14之间，因此，通过所述弹性元件16的弹力作用，使得所述导光板12靠所述发光装置15的一端(图中靠右端)能紧贴于所述固定框14。并由于所述导光板受热会产生些微的热胀冷缩的现象，因此将所述弹性元件16设于所述导光板12没有光源进入的一侧可确保所述导光板12与所述发光装置15的距离固定，提供稳定的光源并解决所述导光板12热胀冷缩的问题。
综上所述，相较于现有的侧入式背光模块的发光装置与光学膜片组是置于同一空腔中，当发光装置运作时，局部的光学膜片组的温度亦会急剧升高，导致光学膜片组产生变形等异常现象，从而影响到整体背光模块的工作质量。本发明通过将所述发光装置15设于所述背光模块10的外部，所述发光装置15的光线可通过所述固定框14上对应开设的入光开口141提供所述导光板12所需要的侧光源，然而大部份所述发光装置15所产生的热能被隔离于所述背光模块10的内腔之外，因此所述导光板12及光学膜片组13不会因过热导致变形等异常现象，从而确保了整体所述侧入式背光模块10的工作质量。
本发明已由上述相关实施例加以描述，然而上述实施例仅为实施本发明的范例。必需指出的是，已公开的实施例并未限制本发明的范围。相反地，包含于权利要求书的精神及范围的修改及均等设置均包括于本发明的范围内。
 本发明的实施方式
工业实用性
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Claims (17)

  1. 一种侧入式背光模块的液晶显示器，其包含：一背光模块、一液晶面板及一显示器外框，所述液晶面板设于所述背光模块上，所述显示器外框包覆及固定所述液晶面板及所述背光模块；所述背光模块包含：
    一背板；
    一导光板，设于所述背板上；
    一固定框，包覆于所述背板的外缘，固定所述导光板于所述背板上；及
    一发光装置，包含一电路板及设于所述电路板上的至少一发光元件；
    其特征在于：所述发光装置的电路板设于所述固定框的外侧，并且所述电路板贴合于所述显示器外框的内侧，所述固定框对应所述至少一发光元件设有至少一入光开口，以使得所述发光元件的光线通过所述入光开口朝向所述导光板发射。
  2. 如权利要求1所述的侧入式背光模块的液晶显示器，其特征在于：所述至少一入光开口是一封闭状或开放状的入光开口。
  3. 如权利要求1所述的侧入式背光模块的液晶显示器，其特征在于：所述至少一发光元件嵌入所述至少一入光开口。
  4. 如权利要求1所述的侧入式背光模块的液晶显示器，其特征在于：所述固定框的材质具有隔热性或/及其内部表面具有反射性。
  5. 如权利要求1所述的侧入式背光模块的液晶显示器，其特征在于：所述导光板相对于所述发光装置的另一端进一步设有一弹性元件，所述弹性元件抵撑于所述导光板及所述固定框之间。
  6. 如权利要求1所述的侧入式背光模块的液晶显示器，其特征在于：所述发光元件为发光二极管。
  7. 一种侧入式背光模块的液晶显示器，其包含：一背光模块、一液晶面板及一显示器外框，所述液晶面板设于所述背光模块上，所述显示器外框包覆及固定所述液晶面板及所述背光模块；所述背光模块包含：
    一背板；
    一导光板，设于所述背板上；
    一固定框，包覆于所述背板的外缘，固定所述导光板于所述背板上；及
    一发光装置，包含一电路板及设于所述电路板上的至少一发光元件；
    其特征在于：所述发光装置的电路板设于所述固定框的外侧，所述固定框对应所述至少一发光元件设有至少一入光开口，以使得所述发光元件的光线通过所述入光开口朝向所述导光板发射。
  8. 如权利要求7所述的侧入式背光模块的液晶显示器，其特征在于：所述至少一入光开口是一封闭状或开放状的入光开口。
  9. 如权利要求7所述的侧入式背光模块的液晶显示器，其特征在于：所述至少一发光元件嵌入所述至少一入光开口。
  10. 如权利要求7所述的侧入式背光模块的液晶显示器，其特征在于：所述固定框的材质具有隔热性或/及其内部表面具有反射性。
  11. 如权利要求7所述的侧入式背光模块的液晶显示器，其特征在于：所述导光板相对于所述发光装置的另一端进一步设有一弹性元件，所述弹性元件抵撑于所述导光板及所述固定框之间。
  12. 如权利要求7所述的侧入式背光模块的液晶显示器，其特征在于：所述发光元件为发光二极管。
  13. 一种侧入式背光模块，其包含：
    一背板；
    一导光板，设于所述背板上；
    一固定框，包覆于所述背板的外缘，固定所述导光板于所述背板上；及
    一发光装置，包含一电路板及设于所述电路板上的至少一发光元件；
    其特征在于：所述发光装置的电路板设于所述固定框的外侧，所述固定框对应所述至少一发光元件设有至少一入光开口，以使得所述发光元件的光线通过所述入光开口朝向所述导光板发射。
  14. 如权利要求13所述的侧入式背光模块，其特征在于：所述至少一入光开口分别是一封闭状或开放状的入光开口。
  15. 如权利要求13所述的侧入式背光模块，其特征在于：所述至少一发光元件嵌入所述至少一入光开口。
  16. 如权利要求13所述的侧入式背光模块，其特征在于：所述固定框的材质具有隔热性或/及其内部表面具有反射性。
  17. 如权利要求13所述的侧入式背光模块，其特征在于：所述发光元件为发光二极管。
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