WO2013166759A1 - 背光模块及其液晶显示装置 - Google Patents

背光模块及其液晶显示装置 Download PDF

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Publication number
WO2013166759A1
WO2013166759A1 PCT/CN2012/076899 CN2012076899W WO2013166759A1 WO 2013166759 A1 WO2013166759 A1 WO 2013166759A1 CN 2012076899 W CN2012076899 W CN 2012076899W WO 2013166759 A1 WO2013166759 A1 WO 2013166759A1
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WO
WIPO (PCT)
Prior art keywords
frame
light guide
guide plate
light
plate
Prior art date
Application number
PCT/CN2012/076899
Other languages
English (en)
French (fr)
Inventor
周革革
黄建发
Original Assignee
深圳市华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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 US13/811,143 priority Critical patent/US20130301296A1/en
Publication of WO2013166759A1 publication Critical patent/WO2013166759A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • 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
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side

Definitions

  • the present invention relates to a backlight module and a liquid crystal display device using the same, and more particularly to a mechanism design for fixing a light guide plate with a frame. Background technique
  • the backlight module is required to provide light to have sufficient brightness to display an image.
  • the quality of the backlight module also needs to be required.
  • a good appearance level is basic and highly valued, and it is desirable to achieve weight reduction, thinning, low power consumption, low cost, high brightness, and narrowness.
  • the market requirements for borders and the like, therefore, all of the above are the directions that the backlight module is currently improving.
  • the components of the liquid crystal display device include: a back plate, a panel module, a light guide plate, a light bar, an optical film, a plastic frame, and a front frame.
  • the panel module, the optical film, the light bar and the light guide plate are all housed in the back plate, the plastic frame and the front frame, and the light guide plate must be fixed by the frame to prevent the deflection of the light guide plate caused by the shaking, once the light guide plate is biased The uniformity and high brightness of the liquid crystal panel are reduced. Therefore, the fixing method of the light guide plate is very important.
  • the plastic frame 40 relies on The snap lock is attached to the backboard 30, but the manner is too strong when the lock is applied, so that the plastic frame 40 is easily deformed.
  • the assembly tolerance is reserved, and the light guide plate itself is prone to thermal expansion and contraction, and there is a gap between the plastic frame 40 and the light guide plate 10, and the plastic frame fails to press the light guide plate 10
  • the reflected light passing through the side surface of the light guide plate 10 will be emitted from the gap between the plastic frame 40 and the light guide plate 10, and the gap will cause a light leakage problem, resulting in a bright line of appearance.
  • the prior art mainly fixes the light guide plate 10 in the horizontal direction, and in the up and down direction, since the plastic frame 40 extends to the light exit surface of the light guide plate 10, and the material of the plastic frame is soft and easily deformed, the light guide plate 10 is In the case of deformation, the fixing effect on the light guide plate 10 becomes small.
  • the object of the present invention is to overcome the defects of the conventional backlight module on the fixed light guide plate, and to provide a backlight module with a mechanism for fixing the light guide plate, and the method of fixing the light guide plate is on the side of the light guide plate.
  • the card has a card surface
  • the frame has an abutting member corresponding to the card surface.
  • the abutting member abuts against the card surface of the light guide plate to fix the light guide plate.
  • the problem to be solved is that the plastic frame fails to press the light guide plate, so that the reflected light from the side of the light guide plate will exit from the gap between the plastic frame and the light guide plate, causing light leakage, and the frame is too thick, and the frame is extended. To the light-emitting surface of the light guide plate, a narrow frame cannot be realized.
  • Another object of the present invention is to overcome the defects of the conventional backlight module on a fixed light guide plate, and to provide a liquid crystal display device of a backlight module with a mechanism for fixing the light guide plate, and a method of fixing the light guide plate.
  • a liquid crystal display device of a backlight module with a mechanism for fixing the light guide plate, and a method of fixing the light guide plate.
  • the frame On the side of the light guide plate, a card surface is formed, and the frame has an abutting member corresponding to the card surface, and the abutting member abuts against the card surface of the light guide plate to fix the guide.
  • Light board On the side of the light guide plate, a card surface is formed, and the frame has an abutting member corresponding to the card surface, and the abutting member abuts against the card surface of the light guide plate to fix the guide.
  • the problem to be solved is that the plastic frame fails to press the light guide plate, so that the reflected light from the side of the light guide plate will exit from the gap between the plastic frame and the light guide plate, causing light leakage, and the frame is too thick, and the frame extends to the light guide plate.
  • the illuminating surface makes it impossible to achieve a narrow border.
  • a backlight module of the present invention includes: a light guide plate, the light guide plate includes a bottom surface, a light emitting surface opposite to the bottom surface, at least one side light incident surface and at least one side surface, the side surface includes a card surface; a frame for accommodating the light guide plate, the frame having an abutting member corresponding to the card surface, the abutting member abutting against the card surface of the light guide plate Fixing the light guide plate; and a light source received in the frame and emitting light toward the lateral light incident surface.
  • the card surface includes a first inclined surface that is at an acute angle to the bottom surface.
  • the frame includes a back panel and a plastic frame.
  • the backplane includes a bottom plate and a side wall extending vertically upward from the periphery of the bottom plate.
  • the plastic frame has a groove, and the groove is coupled to the side wall of the back plate, and the plastic frame has the abutting member.
  • the frame includes a plastic frame having the abutment.
  • the frame includes a backing plate including a bottom panel and a side wall extending upwardly from the periphery of the bottom panel, the sidewall including the abutment.
  • the card surface includes a first inclined surface and a second inclined surface, the first inclined surface and the bottom surface are at an acute angle, and the second inclined surface and the top surface are at an acute angle.
  • the abutting member abuts against the first inclined surface of the engaging surface to fix the light guide plate.
  • the frame includes a backing plate including a bottom plate and a side wall extending upwardly from the bottom plate, the side wall including the abutting member.
  • a liquid crystal display device of the present invention includes a panel module and a backlight module.
  • the backlight module includes: a light guide plate, the light guide plate includes a bottom surface, a light emitting surface opposite to the bottom surface, At least one side of the light incident surface and at least one side surface, the side surface includes a card surface; a frame for accommodating the light guide plate, the frame having an abutting member corresponding to the card surface, the abutting The member is closely abutted on the clamping surface of the light guide plate to fix the light guide plate; and a light source is received in the frame and emits light toward the lateral light incident surface.
  • the card surface includes a first inclined surface, and the first inclined surface and the bottom surface are at an acute angle.
  • the frame includes a back panel and a plastic frame.
  • the backplane includes a bottom plate and a side wall extending vertically upward from the periphery of the bottom plate.
  • the plastic frame has a groove coupled to the side wall of the back plate, and the plastic frame has the abutting member.
  • the backlight module and the liquid crystal display device of the present invention have the effect that the light guide plate used is a card surface having an inclined surface, and when the frame has an external force against the light guide plate, the light guide plate will Will be oriented in one direction
  • the component on the light-incident side, and a vertical downward force so when the deformation of the light guide plate produces an upward force, it can be offset by the vertical downward force of the frame, so the moment and shape of the eversion of the frame itself Variables, compared to the prior art, are greatly reduced. Therefore, the deformed light guide plate can be pressed to solve the problem of light leakage between the existing light-emitting surface and the frame.
  • the frame used in the present invention does not need to extend to the light-emitting surface of the light guide plate, and since the frame can be reduced to achieve the design of the narrow bezel, not all embodiments have this effect.
  • FIG. 1 is a side cross-sectional view of a prior art backlight module
  • FIG. 5 is a side view of a backlight module according to a fourth embodiment of the present invention.
  • the backlight module disclosed in the embodiment includes a light guide plate 100, and the light guide plate 100 includes a bottom surface 110 and a bottom surface.
  • the upper surface portion 122 is a plane perpendicular to the top surface, and the plane is retracted toward the center of the light guide plate 100.
  • the frame is connected to the upper surface portion 122.
  • the frame 300 includes a back plate 310 and a plastic frame 320.
  • the back plate 310 includes a bottom plate 311 and a side wall 312 extending vertically upward from the periphery of the bottom plate 311.
  • the plastic frame 320 has a groove 321 , and the groove 321 is coupled to the side wall 312 of the back plate 310 .
  • the plastic frame 320 has an abutting member 322 , and the abutting member 322 is inserted into the back plate 310 .
  • Side wall 312 and the light guide Between the card faces 120, and closely abutting the card surface of the light guide plate 100 to fix the light guide plate 100; and a light source 150 received in the frame 300 and facing the side
  • the light incident surface 140 emits light.
  • a reflective sheet 200 is disposed between the bottom plate 311 of the backplane 310 and the light guide plate 100 for increasing the light reflectivity and avoiding light loss.
  • FIG. 3 is a side cross-sectional view of a backlight module according to a second embodiment of the present invention.
  • the backlight module disclosed in this embodiment is the same as the first embodiment, and details are not described herein.
  • the frame 400 includes a plastic frame 410.
  • the plastic frame 410 includes a bottom plate 411 and a side wall 412 extending upward from the bottom surface of the bottom plate 411.
  • the portion 412 includes an abutting member 413 and abuts against the engaging surface 120 of the light guide plate 100 to fix the light guide plate 100.
  • the bottom plate 411 of the plastic frame 410 and the light guide plate 100 have a reflection sheet 200 for increasing the light reflectance and avoiding light loss.
  • the light guide plate 600 includes a bottom surface 610, a light exit surface 630 opposite to the bottom surface, at least one side light incident surface 640 and at least one side surface, wherein the light guide plate 600 is different from the first and second embodiments.
  • the side surface includes a card surface 620.
  • the card surface 620 includes an upper surface portion 622 and a lower surface portion 621.
  • the lower surface portion 621 is a first inclined surface, and the first inclined surface is at an acute angle with the bottom surface 610.
  • the upper surface portion 622 is a second inclined surface.
  • the second inclined surface is at an acute angle to the top surface 630.
  • the lower portion 621 is connected to the upper surface portion 622.
  • the frame 500 includes a back plate 510, and the back plate 510.
  • the first inclined surface of the surface 620 is fixed to the light guide plate 600.
  • a light source 150 is received in the frame 500 and emits light toward the lateral light incident surface 640.
  • a reflective sheet 200 is disposed between the bottom plate 511 of the backplane 510 and the light guide plate 600 for increasing the light reflectivity and avoiding light loss.
  • the light guide plate 800 includes a bottom surface 810, a light exit surface 830 opposite to the bottom surface, at least one side light incident surface 840 and at least one side surface, wherein the light guide plate 800 is different from the first, second and third embodiments.
  • the side surface includes a card surface 820.
  • the card surface 820 is a first inclined surface.
  • the first inclined surface is at an acute angle to the bottom surface 810.
  • the frame 700 includes a back plate 710, and the back plate 710 includes a bottom plate 711 and a side wall 712 (a portion included by a broken line) extending upward from the periphery of the bottom plate 711.
  • the side wall 712 includes an abutting member 713 and closely abuts the engaging surface of the light guide plate 800.
  • the light guide plate 800 is fixed.
  • a light source 150 is received in the frame 700 and emits light toward the lateral light incident surface 840.
  • a reflective sheet 200 is disposed between the bottom plate 711 of the backplane 710 and the light guide plate 800 for increasing the light reflectivity and avoiding light loss.
  • a liquid crystal display device includes a panel module and the backlight module of the first embodiment.
  • the backlight module includes: a light guide plate 100, the light guide plate 100 includes a bottom surface 110 and a light emitting surface opposite to the bottom surface 130, at least one side of the light-incident surface 140 and at least one side surface, wherein the side surface includes a card surface 120, the card surface 120 includes an upper surface portion 122 and a lower surface portion 121, wherein the lower portion 121 is a first An inclined surface, the first inclined surface and the bottom surface 110 are at an acute angle.
  • the upper surface portion 122 is a plane perpendicular to the top surface, and the plane is retracted toward the center of the light guide plate 100.
  • a frame 300 includes a back plate 310 and a plastic frame 320.
  • the back plate 310 includes a bottom plate 311 extending vertically upward from the periphery of the bottom plate 311.
  • the plastic frame 320 has a groove 321 , and the groove 321 is coupled to the side wall 312 of the back plate 310 .
  • the plastic frame 320 has an abutting member 322 , and the abutting member 322 is inserted into the side wall 312 .
  • the side wall 312 of the back plate 310 and the card surface 120 of the light guide plate are closely abutted on the card surface of the light guide plate 100 to fix the light guide plate 100.
  • a light source 150 is received in the frame 300 and emits light toward the lateral light incident surface 140.
  • a reflective sheet 200 is disposed between the bottom plate 311 of the backplane 310 and the light guide plate 100 for increasing the light reflectivity and avoiding light loss.

Abstract

本发明公开了一种液晶显示装置，包含一面板模块以及一背光模块，其中，该背光模块包括一导光板，该导光板包含一底面、一相对于该底面之出光面、至少一侧向入光面与至少一侧面，该侧面包含一卡制面；一框架，用以容置该导光板，该框架具有一对应于该卡制面设置的抵靠件，该低靠件紧密抵靠在该导光板的该卡制面上，以固定该导光板；以及一光源，容置于该框架中，并朝向该侧向入光面发射光线。

Description

背光模块及其液晶显示装置
技术领域
本发明是有关于一种背光模块及其使用此背光模块的液晶显示装置，特别是有关于框 架固定导光板的机构设计方式。 背景技术
不论是阴极射线管显示装置或是液晶显示装置，都需要背光模块提供光线，才有足够 的亮度来显示图像。在液晶显示装置质量要求下，背光模块的质量也需要要求，其中一点， 良好的外观水平是基本且备受重视， 另外希望达到轻量化、 薄型化、 低耗电、 低成本、 高 亮度、 窄边框等等的市场要求， 因此上述所提的， 皆是背光模块目前所要改进的方向。
液晶显示装置的组成部份包括： 背板、 面板模块、 导光板、 灯条、 光学膜片、 胶框和 前框等部材。而面板模块、光学膜片、灯条以及导光板等部材都收容在背板、胶框及前框 中， 导光板必须藉由框架固定， 以防止晃动造成导光板的偏移， 一旦导光板偏移， 液晶面 板整体的均匀、高亮度会下降， 所以导光板的固定方式很重要， 如图 1所示的先前技术的 固定方式是使用胶框 40紧压导光板 10， 而胶框 40则依靠卡扣锁附于背板 30上， 但该方 式会因锁附时施力过大， 造成胶框 40容易变形。 另外， 为了便于组装需预留组装公差， 且导光板本身容易有热胀冷縮的问题， 而造成在胶框 40与导光板 10之间存在有一空隙， 当胶框未能紧压导光板 10时，经导光板 10侧面的反射光将从胶框 40与导光板 10之间的 空隙出射， 该空隙会造成漏光问题， 产生外观亮线。此外， 因为先前技术为主要在水平方 向上对导光板 10进行固定， 而在上下方向， 因为胶框 40延伸至导光板 10的出光面， 且 胶框的材质软， 容易变形， 因此导光板 10有形变情况下， 对导光板 10的固定作用变小。 另外， 胶框 40或背板 30的存在， 且胶框 40延伸至导光板 10的出光面， 使侧面的宽度很 难进一步縮减， 而无法实现窄边框设计。
因此，需要提供一种可以固定导光板却不易产生漏光， 同时能实现窄边框的市场需求 的背光模块及其使用此背光模块的液晶显示装置。 发明内容
本发明的目的在于， 克服现有的背光模块在固定导光板上所产生的缺陷， 而提供一种 框架固定导光板的机构设计方式的背光模块， 其固定导光板的方式是在导光板的侧面上， 制作一卡制面，且框架具有一对应于该卡制面设置的抵靠件，抵靠件紧密抵靠在该导光板 的该卡制面上， 以固定导光板。所要解决的问题是胶框未能紧压导光板， 造成经导光板侧 面的反射光将会从胶框与导光板之间的空隙出射， 产生漏光， 以及框架过厚， 且框架延伸 至导光板的出光面， 造成无法实现窄边框。
本发明的另一目的在于， 克服现有的背光模块在固定导光板上所产生的缺陷， 而提供 一种框架固定导光板的机构设计方式的背光模块的液晶显示装置，其固定导光板的方式是 在导光板的侧面上， 制作一卡制面， 且框架具有一对应于该卡制面设置的抵靠件， 抵靠件 紧密抵靠在该导光板的该卡制面上， 以固定导光板。所要解决的问题是胶框未能紧压导光 板， 造成经导光板侧面的反射光将会从胶框与导光板之间的空隙出射， 产生漏光， 以及框 架过厚， 且框架延伸至导光板的出光面， 造成无法实现窄边框。
为解决上述目的，本发明提出的背光模块，其包括：一导光板，该导光板包含一底面、 一相对于该底面之出光面、至少一侧向入光面与至少一侧面， 该侧面包含一卡制面； 一框 架， 用以容置该导光板， 该框架具有一对应于该卡制面设置的抵靠件， 该抵靠件紧密抵靠 在该导光板的该卡制面上， 以固定该导光板； 以及一光源， 容置于该框架中， 并朝向该侧 向入光面发射光线。
在一实施例中， 该卡制面包含第一倾斜面， 该第一倾斜面与该底面夹一锐角角度。 另 夕卜，该框架包含一背板与一胶框。该背板包括一底板与自该底板周围向上垂直延伸的一侧 壁， 该胶框具有一沟槽， 该沟槽耦合于该背板的该侧壁， 该胶框具有该抵靠件。
另外， 在一实施例中， 该框架包含一胶框， 该胶框具有该抵靠件。
另外， 在一实施例中， 该框架包含一背板， 该背板包括一底板与自该底板周围向上延 伸的一侧壁， 该侧壁包含该抵靠件。
在一实施例中，该卡制面包含一第一倾斜面与一第二倾斜面， 该第一倾斜面与该底面 夹一锐角角度，该第二倾斜面与顶面夹一锐角角度，该抵靠件紧密抵靠在该卡制面的第一 倾斜面上， 以固定该导光板。 另外， 该框架包含一背板， 该背板包括一底板与自该底板周 围向上延伸的一侧壁， 该侧壁包含该抵靠件。
为解决上述目的，本发明提出的一种液晶显示装置，其包括一面板模块以及一背光模 块， 该背光模块包括： 一导光板， 该导光板包含一底面、 一相对于该底面之出光面、 至少 一侧向入光面与至少一侧面， 该侧面包含一卡制面； 一框架， 用以容置该导光板， 该框架 具有一对应于该卡制面设置的抵靠件，该抵靠件紧密抵靠在该导光板的该卡制面上， 以固 定该导光板； 以及一光源， 容置于该框架中， 并朝向该侧向入光面发射光线。
前述的液晶显示装置一实施例中，该卡制面包含第一倾斜面， 该第一倾斜面与该底面 夹一锐角角度。另外， 该框架包含一背板与一胶框。该背板包括一底板与自该底板周围向 上垂直延伸的一侧壁， 该胶框具有一沟槽， 该沟槽耦合于该背板的该侧壁， 该胶框具有该 抵靠件。
综上所述， 本发明的背光模块以及液晶显示装置， 其效果在于， 因使用的导光板为一 具有一倾斜面的卡制面， 当框架对导光板有紧压的外力时，导光板将会受到一个方向朝向 入光侧的分力， 以及一竖直向下力， 因此当导光板形变产生向上的作用力时， 可通过框架 竖直向下力相抵消， 因此框架本身所受的外翻的力矩、 形变量， 与先前技术相比， 是大为 减少。故能紧压形变的导光板，解决现有的出光面与框架之间的漏光问题，对于光学品味， 亮线问题不容易产生， 使得提高外观水平。另外， 本发明使用的框架无需延伸到导光板的 出光面，且由于能够縮减框架，进而达到窄边框的设计，但并非所有实施例都具有此功效。
上述说明仅是本发明技术方案的概述， 为了能够更清楚了解本发明的技术手段， 并可 依照说明书的内容予以实施， 以下以本发明的较佳实施例并配合附图详细说明如后。 附图说明
图 1为先前技术背光模块的侧视剖面图
图
图
图
Figure imgf000005_0001
以及
图 5为本发明第四实施例的背光模块的 面图 具体实施方式
以下结合附图所示的较佳实施例作进一步详述。
请参阅图 2 为本发明第一实施例的背光模块的侧视剖面图， 本实施例揭露的背光模 块，其包括：一导光板 100，该导光板 100包含一底面 110、一相对于该底面之出光面 130、 至少一侧向入光面 140与至少一侧面， 其中， 该侧面包含一卡制面 120， 该卡制面 120包 含一上面部 122和一下面部 121， 其中， 该下面部 121为一第一倾斜面， 该第一倾斜面与 该底面 110夹一锐角角度，该上面部 122为垂直于顶面的一平面，其该平面是向该导光板 100中心内縮， 该下面部 121与上面部 122是相连接； 一框架 300， 该框架 300包含一背 板 310与一胶框 320，该背板 310包括一底板 311与自该底板 311周围向上垂直延伸的一 侧壁 312， 该胶框 320具有一沟槽 321， 该沟槽 321耦合于该背板 310的该侧壁 312， 该 胶框 320具有一抵靠件 322，该抵靠件 322插入于该背板 310的该侧壁 312与该导光板的 该卡制面 120之间， 且紧密抵靠在该导光板 100的该卡制面上， 以固定该导光板 100; 以 及一光源 150， 容置于该框架 300中， 并朝向该侧向入光面 140发射光线。
另外， 该背板 310的该底板 311与该导光板 100中间， 有一反射片 200， 是为了增加 光线反射率， 避免光线逸失。
请参阅图 3为本发明第二实施例的背光模块的侧视剖面图，本实施例揭露的背光模块 与第一实施例相同的地方，在此不多赘述。与第一实施例不相同在于该框架 400包含一胶 框 410，该胶框 410包含一底板 411与自该底板 411周围向上延伸的一侧壁 412 (虚线所包 含的部份），其该侧壁 412包含一抵靠件 413，且紧密抵靠在该导光板 100的该卡制面 120 上， 以固定该导光板 100。
另外， 该胶框 410的该底板 411与该导光板 100中间， 有一反射片 200， 是为了增加 光线反射率， 避免光线逸失。
请参阅图 4为本发明第三实施例的背光模块的侧视剖面图，本实施例揭露的背光模块 与第一、 二实施例相同的地方， 在此不多赘述。 与第一、 二实施例不相同在于一导光板 600， 该导光板 600包含一底面 610、 一相对于该底面之出光面 630、 至少一侧向入光面 640与至少一侧面， 其中， 该侧面包含一卡制面 620， 该卡制面 620包含一上面部 622和 一下面部 621， 其中， 该下面部 621为一第一倾斜面， 该第一倾斜面与该底面 610夹一锐 角角度， 该上面部 622为一第二倾斜面， 该第二倾斜面与顶面 630夹一锐角角度， 该下面 部 621与上面部 622是相连接； 该框架 500包含一背板 510， 该背板 510包括一底板 511 与自该底板 511周围向上延伸的一侧壁 512 (虚线所包含的部份），该侧壁 512包含一抵靠 件 513， 且仅紧密抵靠在该导光板 600的该卡制面 620的该第一倾斜面上， 以固定该导光 板 600。 以及一光源 150， 容置于该框架 500中， 并朝向该侧向入光面 640发射光线。
另外， 该背板 510的该底板 511与该导光板 600中间， 有一反射片 200， 是为了增加 光线反射率， 避免光线逸失。
请参阅图 5为本发明第四实施例的背光模块的侧视剖面图，本实施例揭露的背光模块 与第一、 二、 三实施例相同的地方， 在此不多赘述。 与第一、 二、 三实施例不相同在于一 导光板 800， 该导光板 800包含一底面 810、 一相对于该底面之出光面 830、 至少一侧向 入光面 840与至少一侧面， 其中， 该侧面包含一卡制面 820， 该卡制面 820为一第一倾斜 面， 该第一倾斜面与该底面 810夹一锐角角度； 该框架 700包含一背板 710， 该背板 710 包括一底板 711与自该底板 711周围向上延伸的一侧壁 712 (虚线所包含的部份），该侧壁 712包含一抵靠件 713， 且紧密抵靠在该导光板 800的该卡制面 820上， 以固定该导光板 800。 以及一光源 150， 容置于该框架 700中， 并朝向该侧向入光面 840发射光线。
另外， 该背板 710的该底板 711与该导光板 800中间， 有一反射片 200， 是为了增加 光线反射率， 避免光线逸失。
一种液晶显示装置，其包括一面板模块以及前述的第一个实施例的背光模块，该背光 模块包括： 一导光板 100， 该导光板 100包含一底面 110、 一相对于该底面之出光面 130、 至少一侧向入光面 140与至少一侧面， 其中， 该侧面包含一卡制面 120， 该卡制面 120包 含一上面部 122和一下面部 121， 其中， 该下面部 121为一第一倾斜面， 该第一倾斜面与 该底面 110夹一锐角角度，该上面部 122为垂直于顶面的一平面，其该平面是向该导光板 100中心内縮， 该下面部 121与上面部 122是相连接； 以及一框架 300， 该框架 300包含 一背板 310与一胶框 320，该背板 310包括一底板 311与自该底板 311周围向上垂直延伸 的一侧壁 312， 该胶框 320具有一沟槽 321， 该沟槽 321耦合于该背板 310的该侧壁 312， 该胶框 320具有一抵靠件 322，该抵靠件 322插入于该背板 310的该侧壁 312与该导光板 的该卡制面 120之间， 且紧密抵靠在该导光板 100的该卡制面上， 以固定该导光板 100。 以及一光源 150， 容置于该框架 300中， 并朝向该侧向入光面 140发射光线。
另外， 该背板 310的该底板 311与该导光板 100中间， 有一反射片 200， 是为了增加 光线反射率， 避免光线逸失。
以上， 仅为本发明的较佳实施例， 意在进一步说明本发明， 而非对其进行限定。 凡根 据上述的文字和附图所公开的内容进行的简单的替换， 都在本专利的权利保护范围之列。

Claims

权利要求
1. 一种背光模块， 包括：
一导光板， 该导光板包含一底面、 一相对于该底面之出光面、 至少一侧向入光面 与至少一侧面， 该侧面包含一卡制面， 该卡制面包含第一倾斜面， 该第一倾斜面与该 底面夹一锐角角度；
一框架， 用以容置该导光板， 该框架具有一对应于该卡制面设置的抵靠件， 该抵 靠件紧密抵靠在该导光板的该卡制面上， 以固定该导光板， 该框架包含一背板与一胶 框， 该背板包括一底板与自该底板周围向上垂直延伸的一侧壁， 该胶框具有一沟槽， 该沟槽耦合于该背板的该侧壁， 该胶框具有该抵靠件； 以及
一光源， 容置于该框架中， 并朝向该侧向入光面发射光线。
2. 一种背光模块， 包括：
一导光板， 该导光板包含一底面、 一相对于该底面之出光面、 至少一侧向入光面 与至少一侧面， 该侧面包含一卡制面；
一框架， 用以容置该导光板， 该框架具有一对应于该卡制面设置的抵靠件， 该抵 靠件紧密抵靠在该导光板的该卡制面上， 以固定该导光板； 以及
一光源， 容置于该框架中， 并朝向该侧向入光面发射光线。
3. 如权利要求 2所述的背光模块， 其中， 该卡制面包含第一倾斜面， 该第一倾斜面与该 底面夹一锐角角度。
4. 如权利要求 3所述的背光模块， 其中， 该框架包含一背板与一胶框， 该背板包括一底 板与自该底板周围向上垂直延伸的一侧壁， 该胶框具有一沟槽， 该沟槽耦合于该背板 的该侧壁， 该胶框具有该抵靠件。
5. 如权利要求 3所述的背光模块， 其中， 该框架包含一胶框， 该胶框具有该抵靠件。
6. 如权利要求 3所述的背光模块， 其中， 该框架包含一背板， 该背板包括一底板与自该 底板周围向上延伸的一侧壁， 该侧壁包含该抵靠件。
7. 如权利要求 2所述的背光模块， 其中， 该卡制面包含一第一倾斜面和一第二倾斜面， 其中， 第一倾斜面， 该第一倾斜面与该底面夹一锐角角度， 该第二倾斜面与顶面夹一 锐角角度， 该抵靠件紧密抵靠在该卡制面的第一倾斜面上， 以固定该导光板。
8. 如权利要求 5所述的背光模块， 其中， 该框架包含一背板， 该背板包括一底板与自该 底板周围向上延伸的一侧壁， 该侧壁包含该抵靠件。
9. 一种液晶显示装置， 其包括一面板模块以及一背光模块， 该背光模块包括：
一导光板， 该导光板包含一底面、 一相对于该底面之出光面、 至少一侧向入光面 与至少一侧面， 该侧面包含一卡制面；
一框架， 用以容置该导光板， 该框架具有一对应于该卡制面设置的抵靠件， 该抵 靠件紧密抵靠在该导光板的该卡制面上， 以固定该导光板； 以及
一光源， 容置于该框架中， 并朝向该侧向入光面发射光线。
10.如权利要求 9所述的液晶显示装置， 其中， 该卡制面包含第一倾斜面， 该第一倾斜面 与该底面夹一锐角角度。
11.如权利要求 10所述的液晶显示装置， 其中， 该框架包含一背板与一胶框， 该背板包括 一底板与自该底板周围向上垂直延伸的一侧壁， 该胶框具有一沟槽， 该沟槽耦合于该 背板的该侧壁， 该胶框具有该抵靠件。
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