CN1510482A - Direct downward background module - Google Patents

Direct downward background module Download PDF

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Publication number
CN1510482A
CN1510482A CNA021584222A CN02158422A CN1510482A CN 1510482 A CN1510482 A CN 1510482A CN A021584222 A CNA021584222 A CN A021584222A CN 02158422 A CN02158422 A CN 02158422A CN 1510482 A CN1510482 A CN 1510482A
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China
Prior art keywords
light
guide plate
light guide
backlight module
type backlight
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CNA021584222A
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Chinese (zh)
Inventor
杨邦伦
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明基电通股份有限公司
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Priority to CNA021584222A priority Critical patent/CN1510482A/en
Publication of CN1510482A publication Critical patent/CN1510482A/en

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Abstract

A module for poor light consists of a light guide plate with light incoming face which is not plane face and light outgoing face which is above the light incoming face, a reflecting sheet and multiple light source. Multiple groove is set at the light guide plate as each light source is set in correspondence to a groove. The light from each light source reaches to the light guide plate by the light incoming face via reflection of the reflecting sheet the light is projected out from the light guide plate by abovesaid light outgoing face.

Description

直下式背光模块 The direct type backlight module

技术领域 FIELD

本发明涉及一种应用于显示器的背光模块,特别是涉及放射型的直下式背光模块。 The present invention relates to a backlight module applied to a display, particularly to a direct-emission type backlight module.

背景技术 Background technique

图1A为一种现有液晶显示器的直下式背光模块的立体图。 1A is a liquid crystal display of a conventional direct-type backlight module perspective in FIG. 如图1A所示,现有的直下式背光模块10包括一导光板(light guideplate)11、一反射片(reflector)12以及多个灯管13;其中,多个灯管13设置于反射片12与导光板11之间。 , A conventional direct-type backlight module 10 comprises a light guide plate (light guideplate) 11, a reflection sheet (Reflector) 12 and a plurality of tubes 13 as shown in FIG. 1A; wherein a plurality of lamps 13 disposed on the reflective sheet 12 and between the light guide plate 11.

一般而言,导光板平面上与灯管的最短距离处,容易产生最大发光亮度。 Generally, the light guide plate and the plane of the tube at the shortest distance, the maximum emission luminance likely to occur. 进一步,随着多个灯管的排列变化,容易在导光板邻近液晶面板的发光平面上产生发光亮度变化,也就是明暗的条纹变化。 Further, a plurality of lamps with the permutations, variations in emission luminance likely to occur on the light emitting plane of the light guide plate adjacent to the liquid crystal panel, i.e. light and dark fringes changes.

为了改善上述明暗的条纹变化,参考图1B,其显示一种现有液晶显示器的直下式背光模块20的截面图。 In order to improve the change of the bright and dark fringes, with reference to Figure 1B, which shows a cross-sectional view of a conventional liquid crystal display device of a direct type backlight module 20. 导光板21邻近液晶面板的出光面25上,与灯管23相对应处形成一遮光层24,通过此遮光层遮蔽明暗条纹的明亮条纹。 The light guide plate 21 adjacent to the surface of the liquid crystal panel 25, a light-shielding layer 24 is formed at a position corresponding tube 23, through which the light shielding layer shielding the bright stripes and dark stripes. 然而,此方法将会减少通过液晶面板的光线量;进一步,减少液晶显示器的光亮度。 However, this method will reduce the amount of light passing through the liquid crystal panel; further reduce the brightness of the liquid crystal display. 此外,再参考图1C,根据美国专利6,407,781号,其显示另一种现有液晶显示器的直下式背光模块30的截面图。 Further, referring to Figure 1C, in accordance with U.S. Patent No. 6,407,781, a cross-sectional view of another conventional liquid crystal display device of a direct type backlight module 30 is shown. 与灯管33对应位置处的反射片32形成V型,通过V型反射片32反射来自灯管的光束,以便降低导光板31上明暗条纹的差异。 The lamp 33 and the reflection sheet 32 ​​corresponding to the location formed V-V through the reflective sheet 32 ​​reflects the light beam from the lamp, so as to reduce the difference between light and dark fringes of the light guide plate 31. 然而,未通过V型反射罩反射而直接照射导光板的光束,仍然会在导光板邻近液晶面板的出光面35上产生明暗条纹。 However, the light beam is not directly irradiated by the V-shaped guide plate reflector reflected light and dark fringes will still produce the light guide plate adjacent to the surface 35 of the liquid crystal panel.

发明内容 SUMMARY

本发明的目的在于提供一种直下式背光模块,以解决上述所提出的问题。 Object of the present invention is to provide a direct type backlight module, in order to solve the problems raised above.

本发明的目的是这样实现的,即提供一种直下式背光模块,包括:一导光板,具有一入光面以及一出光面,且上述出光面位于上述入光面上方,且上述入光面非为平面;一反射片;以及多个光源,设置在上述导光板以及上述反射片之间,其中,上述导光板设置多个凹槽,每一光源相对应于一凹槽设置,上述这些光源发出光线,经上述反射片反射,由上述入光面进入上述导光板,再由上述出光面射出上述导光板。 Object of the present invention is achieved, i.e., to provide a direct type backlight module, comprising: a light guide plate having a light incident surface and a light exit surface and the light exit surface is located above the upper surface, and said light incident surface non-planar; a reflective sheet; and a plurality of light sources disposed between the light guide plate and said reflection sheet, wherein a plurality of the light guide plate grooves, each light source corresponds to a recess is provided, these light sources rays, reflected by the reflection sheet, by the light incident surface into the light guide plate, the light guide plate and then emitted from the light exit surface.

其中,本发明使用的具有非平面入光面的导光板,其横断面可以为圆弧型、三角形、矩形或多边形。 Wherein, according to the present invention having a non-planar surface into the light guide plate, which arc cross-section may be, triangular, rectangular or polygonal.

根据本发明,通过入光面为非平面的导光板,将来自灯管的光束均匀地自导光板邻近液晶面板的发光平面扩散,且由于具有凹槽的导光板设计,使得灯管可镶嵌于凹槽中,由此可减少背光模块厚度。 According to the present invention, the non-planar surface of the light guide plate, the light beam from the lamp uniformly from the light emitting plane of the light guide plate adjacent the diffusion of the liquid crystal panel and the light guide plate due to the design having a groove, so that the lamp can be mounted on the groove, thereby reducing the thickness of the backlight module.

附图说明 BRIEF DESCRIPTION

图1A为一种现有液晶显示器的背光模块的立体图;图1B为另一种现有液晶显示器的背光模块的截面图;图1C为再一种现有液晶显示器的背光模块的截面图;图2为本发明第一实施例直下式背光模块剖视图;图3为本发明第二实施例直下式背光模块剖视图;图4为本发明第三实施例直下式背光模块剖视图。 1A is a perspective view of a conventional liquid crystal display backlight module; FIG. 1B is a cross-sectional view of another conventional liquid crystal display backlight module; 1C as still another conventional liquid crystal display backlight module cross-sectional view; FIG. two cases of a direct type backlight module sectional view of a first embodiment of the present invention; a second embodiment of a direct type backlight module of the present invention, a cross-sectional view of FIG. 3; FIG. 4 is a third embodiment of a cross-sectional view of a direct type backlight module invention.

具体实施方式 Detailed ways

请参考图2,其为本发明第一实施例直下式背光模块剖视图。 Please refer to FIG 2, which is a direct type backlight module of the present embodiment cross-sectional view of a first embodiment of the invention. 在此实施例中,直下式背光模块100,具有一导光板131、一反射片132以及多个光源133,其中,光源133可以为灯管。 In this embodiment, the direct type backlight module 100 includes a light guide plate 131, a reflection sheet 132 and a plurality of light sources 133, wherein the light source 133 may be a lamp.

导光板131具有一入光面134以及一出光面135,且出光面135位于入光面134上方。 The light guide plate 131 has a light incident surface 134 and a surface 135, 135 and the surface 134 is positioned above the surface. 入光面134具有凹槽状的非平面结构。 Light incident surface 134 having a groove-shaped non-planar structure. 反射片132用以反射光线。 The reflective sheet 132 to reflect light. 多个光源133设置在导光板131以及反射片132之间;而导光板131上的多个凹槽137与光源133位置对应设置,每一光源133置于一凹槽137内,可减少背光模块100整体的厚度。 A plurality of light sources 133 disposed between the light guide plate 131 and the reflective sheet 132; and a plurality of grooves 137 on the light guide plate 131 is provided with a position corresponding to the light sources 133, each light source 133 disposed within a recess 137, the backlight module can be reduced the overall thickness of 100.

光源133发出光线,除了可经由具有凹槽137的入光面134进入,直接射出导光板131外,也可经反射片132反射,由入光面134进入上述导光板131,再由上述出光面135射出上述导光板131。 The light source 133 emits light, in addition to entering via the light incident surface 134 having a recess 137, 131 is directly emitted from the light guide plate, but also may be reflected by the reflective sheet 132, the light incident surface 134 to enter the light guide plate 131, and then by the exit surface 135 emits the light guide plate 131.

导光板131凹槽137的横断面可以为如图2所示的多边形,且在导光板131上方,还设置有一扩散装置136,用以使光线束更均匀扩散。 The light guide plate 137 in the groove 131 cross section may be polygonal as shown in FIG. 2, the light guide plate 131 and above, further provided with a diffusion device 136, so that the light beam for more uniform diffusion. 扩散装置136可以包括一保护片贴附于出光面135上、一棱镜片贴附于上述保护薄膜上、以及一雾化片贴附于棱镜片上。 Diffusion means may comprise a protective sheet 136 is attached to an upper surface 135, a prism sheet attached onto the protective film, and a sheet attached onto the atomizing prism sheet.

请参考图3,其为本发明第二实施例直下式背光模块剖视图。 Please refer to FIG. 3, a cross-sectional view of a direct type backlight module which is a second embodiment of the present invention. 在此实施例中,直下式背光模块200,具有一导光板231、一反射片232以及多个光源233,其中光源233可以为灯管。 In this embodiment, the direct type backlight module 200, having a guide plate 231, a reflection sheet 232 and a plurality of light sources 233, wherein the light source 233 may be a lamp.

导光板231具有一入光面234以及一出光面235,且出光面235位于入光面234上方。 The light guide plate 231 has a light incident surface 234 and a surface 235, 235 and the surface 234 is positioned above the surface. 入光面234具有凹槽状的非为平面结构。 The groove-like surface 234 having a non-planar structure. 反射片232用以反射光线束。 The reflective sheet 232 to reflect light beams. 多个光源233设置在导光板231以及反射片232之间;而导光板231上的多个凹槽237与光源233位置对应设置,每一灯管233置于一凹槽237内,可减少背光模块200整体的厚度。 A plurality of light sources 233 disposed between the light guide plate 231 and the reflective sheet 232; and a plurality of grooves 237 and 231 on the light guide plate 233 corresponding to the position of the light source is provided, each inner tube 233 disposed 237, a groove can be reduced backlight the overall thickness of the module 200.

光源233发出光线,除了可经由具有凹槽237的入光面234进入,直接射出导光板231之外,也可以经反射片232反射,由入光面234进入该导光板231,再由上述出光面235射出上述导光板231。 The light source 233 emits light, in addition to entering via the light incident surface 234 having a recess 237 is directly emitted outside the light guide plate 231 may be reflected by the reflective sheet 232, the light incident surface 234 to enter the light guide plate 231, the light again by the emitting surface of the light guide plate 235 231.

在此实施例中,导光板231凹槽237的横断面可以为如图3所示的圆弧形。 In this embodiment, the light guide plate 231 groove 237 cross section may be arcuate as shown in FIG. 3. 在导光板231上方,还设置有一扩散装置236,用以使光线束更均匀扩散,其中扩散装置236可以包括一保护片贴附于出光面235上、一棱镜片贴附于上述保护片上、以及一雾化片贴附于上述棱镜片上。 In the top of the light guide plate 231, also provided with a diffuser 236, so that the light beam more uniform for diffusion, wherein the diffusing device 236 may comprise a protective sheet attached to an upper surface 235, a prism sheet attached onto the protective sheet, and an atomizer attached to said prism sheet.

请参考图4,其为本发明第三实施例直下式背光模块剖视图。 Please refer to FIG. 4, which is a direct type backlight module of the present embodiment cross-sectional view of a third embodiment of the invention. 在此实施例中,直下式背光模块300,具有一导光板331、一反射片332以及多个光源333,其中光源333可以为灯管。 Embodiment, the direct type backlight module 300. In this embodiment, a light guide plate 331 having a plurality of light sources 332 and the reflection sheet 333, wherein the light source 333 may be a lamp.

导光板331具有一入光面334以及一出光面335,且出光面335位于入光面334上方。 The light guide plate 331 has a light incident surface 334 and a surface 335, 335 and the surface 334 is positioned above the surface. 又,入光面334具有凹槽状的非为平面结构。 Further, the groove-like surface 334 having a non-planar structure. 反射片332用以反射光线束。 The reflective sheet 332 to reflect light beams. 多个光源333设置在导光板331以及反射片332之间;而导光板331上的多个凹槽337与光源333位置对应设置,每一光源333置于一凹槽337之内,可减少背光模块300整体的厚度。 A plurality of light sources 333 disposed between the light guide plate 331 and the reflective sheet 332; and a plurality of grooves 331 on the light guide plate 337 and 333 disposed corresponding to the position of the light source, each light source 333 disposed within a recess 337, the backlight may be reduced the overall thickness of the module 300.

光源333发出光线,除了可经由具有凹槽337的入光面334进入,直接射出导光板331之外,也可以经反射片332反射,由入光面334进入该导光板331,再由上述出光面335射出上述导光板331。 The light source 333 emits light, in addition to entering via the light incident surface 334 having a recess 337, directly emitted outside the light guide plate 331 may be reflected by the reflective sheet 332, the light incident surface 334 to enter the light guide plate 331, the light again by the emitting surface of the light guide plate 335 331.

在此实施例中,导光板331凹槽337的横断面可以为如图4所示的三角形。 In this embodiment, the groove 331 cross section of the light guide plate 337 may be a triangle as shown in FIG. 4. 在导光板331上方,还设置有一扩散装置336,用以使光线束更均匀扩散。 Above the guide plate 331 is also provided with a diffusion device 336, so that the light beam for more uniform diffusion. 扩散装置336可以包括一保护片贴附于出光面335上、一棱镜片贴附于上述保护片上、以及一雾化片贴附于上述棱镜片上。 Diffusion means may comprise a protective sheet 336 is attached to an upper surface 335, a prism sheet attached onto the protective sheet, and a sheet attached onto the atomizing the prism sheet.

虽然结合以上较佳实施例揭露了本发明,然而其并非限定于本发明,任何熟悉此技术人员,在不脱离本发明的精神和范围可作一些更动与润饰,因此本发明的保护范围应以权利要求所界定的为准。 While the embodiment disclosed above in connection with the preferred embodiments of the present invention, however the present invention is not limited to, any person skilled in the art, without departing from the spirit and scope of the present invention can make some modifications and variations, and therefore the scope of the present invention should in the claims and their equivalents.

Claims (8)

1.一种直下式背光模块,包括:一导光板,具有一入光面以及一出光面,且该出光面位于该入光面上方,且该入光面非为平面;一反射片;以及多个光源,设置在该导光板以及该反射片之间,其中,该导光板设置多个凹槽,每一光源相对应于一凹槽设置,该些光源发出光线,经该反射片反射,由该入光面进入该导光板,再由该出光面射出该导光板。 A direct type backlight module, comprising: a light guide plate having a light incident surface and a light exit surface, the light emitting surface and located above the surface, and the light incident surface is non-planar; a reflective sheet; and a plurality of light sources disposed between the light guide plate and the reflection plate, wherein the plurality of light guide plate grooves, each light source disposed in a corresponding recess, the plurality of light rays, reflected by the reflective sheet, enters the light incident surface of the light guide plate and then emitted from the light emitting surface of the light guide plate.
2.如权利要求1所述的直下式背光模块,其中,该凹槽的横断面为圆弧形。 2. The direct type backlight module according to claim 1, wherein the cross section of the groove is arcuate.
3.如权利要求1所述的直下式背光模块,其中,该凹槽的横断面为三角形。 The direct type backlight module as claimed in claim 1, wherein the recess is triangular cross section.
4.如权利要求1所述的直下式背光模块,其中,该凹槽横断面为矩形。 4. The direct type backlight module according to claim 1, wherein the groove has a rectangular cross section.
5.如权利要求1所述的直下式背光模块,其中,该凹槽的横断面为多边形。 5. The direct-type backlight module according to claim 1, wherein the recess is polygonal cross-section.
6.如权利要求1所述的直下式背光模块,其还包括一扩散装置,置于该导光板上方。 The direct type backlight module as claimed in claim 1, further comprising a diffuser means disposed above the light guide plate.
7.如权利要求6所述的直下式背光模块,其中,该扩散装置包括一保护片贴附于该出光面上、一棱镜片贴附于该保护薄膜上、以及一雾化片贴附于该棱镜片上。 7. The direct-type backlight module according to claim 6, wherein the diffusion means comprises a protective sheet attached to the light-emitting surface, a prism sheet attached on the protective film, and a sheet attached to the atomization the prism sheet.
8.如权利要求1所述的直下式背光模块,其中该各光源为灯管。 8. The direct-type backlight module according to claim 1, wherein each light source of the lamp.
CNA021584222A 2002-12-24 2002-12-24 Direct downward background module CN1510482A (en)

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CN100460949C (en) 2004-07-16 2009-02-11 恩普乐股份有限公司 Surface light source device, illumination unit and light flux control member
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US7581850B2 (en) 2005-08-12 2009-09-01 Hon Hai Precision Industry Co., Ltd. Light guide plate and backlight module using the same
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CN102252234A (en) * 2011-07-06 2011-11-23 苏州茂立光电科技有限公司 Light emitting module and the light guide plate
CN102720988A (en) * 2012-05-25 2012-10-10 苏州晶品光电科技有限公司 High-brightness direct-type backlight source of LED (light emitted diode)
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CN103511925A (en) * 2013-09-18 2014-01-15 上海向隆电子科技有限公司 Thin direct-lighting type backlight module
CN105629563A (en) * 2011-01-21 2016-06-01 群创光电股份有限公司 Backlight module and liquid crystal display device

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CN100460949C (en) 2004-07-16 2009-02-11 恩普乐股份有限公司 Surface light source device, illumination unit and light flux control member
US8657467B2 (en) 2004-09-24 2014-02-25 Epistar Corporation Illumination apparatus
US7341358B2 (en) 2004-09-24 2008-03-11 Epistar Corporation Illumination apparatus
CN100388080C (en) 2004-09-30 2008-05-14 晶元光电股份有限公司 Light emitting device
CN100495133C (en) 2005-07-22 2009-06-03 三星电子株式会社 Backlight unit and liquid crystal display comprising the same
US7581850B2 (en) 2005-08-12 2009-09-01 Hon Hai Precision Industry Co., Ltd. Light guide plate and backlight module using the same
CN100498454C (en) 2005-10-28 2009-06-10 鸿富锦精密工业(深圳)有限公司;鸿海精密工业股份有限公司 Backlight module set and its light guide plate
CN100543552C (en) 2006-11-10 2009-09-23 群康科技(深圳)有限公司;群创光电股份有限公司 Back light module unit and LCD device
CN100465728C (en) 2007-01-25 2009-03-04 北京京东方光电科技有限公司;京东方科技集团股份有限公司 A backlight source module
CN101526177B (en) 2008-03-05 2013-05-01 恩普乐股份有限公司 Emission device, surface light source device and display
CN105629563A (en) * 2011-01-21 2016-06-01 群创光电股份有限公司 Backlight module and liquid crystal display device
CN105629563B (en) * 2011-01-21 2019-01-18 群创光电股份有限公司 Backlight module and liquid crystal display device
US9519099B2 (en) 2011-06-24 2016-12-13 Lg Innotek Co., Ltd. Backlight unit and display apparatus using the same
CN102840510A (en) * 2011-06-24 2012-12-26 Lg伊诺特有限公司 Backlight unit and display apparatus using the same
CN102840510B (en) * 2011-06-24 2016-05-18 Lg伊诺特有限公司 Back light unit and use its display unit
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CN102252234B (en) 2011-07-06 2013-03-06 苏州茂立光电科技有限公司 Light emitting module and the light guide plate
CN102720988A (en) * 2012-05-25 2012-10-10 苏州晶品光电科技有限公司 High-brightness direct-type backlight source of LED (light emitted diode)
CN103047583A (en) * 2012-12-07 2013-04-17 康佳集团股份有限公司 Side light direct type backlight module
CN103511925A (en) * 2013-09-18 2014-01-15 上海向隆电子科技有限公司 Thin direct-lighting type backlight module

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