CN1504776A - Light conducting element - Google Patents

Light conducting element Download PDF

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Publication number
CN1504776A
CN1504776A CNA021521913A CN02152191A CN1504776A CN 1504776 A CN1504776 A CN 1504776A CN A021521913 A CNA021521913 A CN A021521913A CN 02152191 A CN02152191 A CN 02152191A CN 1504776 A CN1504776 A CN 1504776A
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CN
China
Prior art keywords
light guide
guide member
light
surface
bottom surface
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CNA021521913A
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Chinese (zh)
Inventor
余泰成
吕昌岳
陈杰良
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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
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Priority to CNA021521913A priority Critical patent/CN1504776A/en
Publication of CN1504776A publication Critical patent/CN1504776A/en

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Abstract

A photoconductive device comprising an incident plane, a bottom plane and an outgoing plane, wherein the incident plane is used for receiving the light beams from the external light source, the bottom plane is connected with the incident plane, the outgoing plane is opposite the bottom plane to guide the light beams out of the light conducting element, wherein a plurality of grid points are distributed on the bottom plane of the light conducting element, the outgoing plane has a plurality of regularly configured pyramid-shaped prism arrangement for focusing the outgoing light beams and enhancing the intensity of the outgoing light beams from the light conducting element.

Description

导光元件 The light guide member

【技术领域】本发明涉及一种用于液晶显示器的导光元件。 TECHNICAL FIELD The present invention relates to a light guide member for a liquid crystal display.

【背景技术】液晶显示器是一种非自发光的显示装置,其显示主要是通过控制外部光源所发出光束的通过或者不通过来实现,因此需要外部光源和相应的导光装置,该导光装置可以将外部光源所发出的光束导向显示面板。 BACKGROUND display apparatus a liquid crystal display is a non-self-luminous, the display of the main light beam emitted by or not controlled by an external light source implemented by, and therefore requires an external light sources and corresponding light guide means, the light guiding means the guide beam emitted from an external light source may be a display panel.

如图1所示的一种现有技术背光系统100,该背光系统通常包括一光源110、一导光元件120、一扩散板130和一棱镜板组合140,其中该扩散板130和棱镜板组合140依序排布在该导光元件120上,棱镜板组合140由相互平行的上、下棱镜板142、141构成,其每一棱镜板上的棱镜结构相互平行,二棱镜板142、141的棱镜分布大致垂直。 The one shown in FIG. 1 prior art backlight system 100, the backlight system typically includes a light source 110, a light guide member 120, a diffusion plate 130 and a prism plate assembly 140, wherein the diffusion plate 130 and the prism sheet assembly 140 are sequentially arranged on the light guide member 120, a prism sheet assembly 140 on the mutually parallel, constituting the lower prism plates 142,141, each of the prism plate prism structures parallel to each other, the two prism plates 142,141 distribution of the prism is substantially vertical. 该导光元件120可以由聚合树脂材料制成,如丙烯酸树脂、聚碳酸脂等,形状大致呈楔形,其包括一入射面121、一出射面122、一和出射面122相对并成一定角度的底面123,其中该底面123通过网点印刷(Dot Printing)方式印刷有多个具散射和反射功能的网点(图未示)。 The light guide member 120 may be made of a polymeric resin material, such as acrylic resins, such as polycarbonate, a substantially wedge shape, which includes an incident surface 121, an exit surface 122, and an exit surface 122 and angled relative to a bottom surface 123, wherein the bottom surface 123 (Dot printing) having a plurality of dots printed embodiment scattering and reflection function (not shown) through a network printing. 该导光元件120的入射面121接收来自侧部光源110所发出的光束,该光束经过底面123的散射和反射后形成均匀发散的光束并由出射面122导出,再通过扩散板130、棱镜板组合140后出射到显示面板(图未示)。 The light guide element incident surface 121 of the light side of the light source emitted by 110 receives the light beam after the bottom surface of the scattering and reflection 123 uniformly divergent beam is formed by the exit surface 122 exported through the diffusion plate 130, a prism sheet after combination 140 impinges display panel (not shown). 但是,由于该背光系统100采用元件较多、结构复杂,致使制造工序较多、成本较高,且由于其各元件之间存在多个界面,光束在界面之反射次数较多,导致光束能量损耗较大,出射光束的强度较弱,从而该背光系统出光亮度较低。 However, since the backlight system 100 employs many elements, a complicated structure, resulting in many manufacturing processes, high cost, and because the presence of a plurality of interfaces between the elements, the number of beams in the more reflective interface, causing the light beam energy loss large, the outgoing light beam intensity is weak, so that the system is a lower backlight brightness.

图2和图3所示为2000年9月26日公告的美国专利第6,123,431号揭示的一种背光系统200,其大致呈楔形,包括一光源210和一导光元件220。 2 and 3 of U.S. Patent No. 6,123,431 September 26, 2000, disclosed a backlight announcement system 200, which is substantially wedge-shaped, comprising a light source 210 and a light guide member 220. 该导光元件220包括一入射面221、一出射面222、一和出射面222相对并和入射面221成一定角度的底面223、一和入射面221相对的端面230。 The light guide member 220 includes an incident surface 221, an exit surface 222, and an exit surface and a bottom 222 and opposite the incident surface 221 at an angle 223, an incident surface 221 and opposite end faces 230. 该入射面221接收光源210所发出的光束,该出射面222非等距分布有沿平行于导光元件220的入射面221方向的棱镜结构250,该棱镜结构250的间距自入射面221相对端面230逐渐减小,位于端面230处的两相邻棱镜结构250的间距为零。 The incident surface 221 receives the light beam 210 emitted from the exit surface 222 non-equidistant distribution in a direction parallel to the 221 direction of the incident surface of the light guide member 220 of a prism structure 250, the prism structure pitch 250 from the incident surface 221 opposing end surfaces 230 gradually decreases from the end surfaces 230 of two adjacent prismatic structure 250 is zero pitch. 该棱镜结构250和该导光元件220为一体成型,大致呈金字塔形,相对于出射面222凸出。 The prismatic structures 250 and 220 of the light guide element integrally molded, substantially pyramid shaped, with respect to the exit surface 222 convex. 该导光元件220将棱镜结构250整合到出射面222,实现结构的简化。 The prism light guide member 220 integrated structure 250 to the exit surface 222, to achieve a simplified structure. 但是,该导光元件220的底面223为平面并镀有反射膜,如铝膜,经其反射的光束在出射面222的强度分布不均,需要将出射面222的棱镜结构250设计成非等间距状以修正光强度和方向,使出射面222的光强度均匀。 However, the bottom surface of the light guiding element 220 223 is flat and plated with a reflective film, such as aluminum, through which the light beam reflected in the intensity of emission surface 222 of the uneven distribution, it is necessary to the prism structure of the exit surface 222 of 250 is designed to unequal like to correct the pitch direction and intensity of light, a uniform light intensity resorted exit surface 222. 因此,该棱镜结构250间距之设计需要根据出射面222光强度的分布而进行,其实现比较复杂,且出光面222没有设置棱镜结构区域,因为没有棱镜的聚光,从而该导光元件220出光亮度较低。 Thus, the prism structure 250 spacing the design requirements according to the light intensity distribution of the exit surface 222, which is more complicated to realize, and the surface 222 without the prism structure area, because no converging prism, whereby the light guide member 220 light lower brightness.

【发明内容】为了克服现有技术导光元件设计复杂、光输出强度低的不足,本发明提供一种导光元件,其设计简单、光输出强度较高。 [SUMMARY OF THE INVENTION In order to overcome the complex design of the prior art light guide member, the light output is less than a low strength, the present invention provides a light guide element, simple design, high light output intensity.

本发明解决其技术问题所采用的技术方案是:提供一种导光元件,该导光元件包括一入射面、一底面和一出射面,该入射面用来接收由外部光源发出的光束,该底面和入射面相连,该出射面和底面相对,将光束导出该导光元件。 The present invention solves the technical problem using the technical solution is: to provide a light guide member, the light guide member comprises an incident surface, a bottom surface and an exit surface, the incident surface for receiving light beams emitted from an external light source, the and the incident surface is connected to the bottom surface, the bottom surface opposite the exit surface and the light beam deriving the light guide element. 其中,该导光元件的底面分布有多个网点,该出射面具多个规则均匀排布的金字塔形棱镜结构。 Wherein the bottom surface of the light guide member has a plurality of outlets distributed, the emission mask pyramidal prism structures uniformly arranged plurality of rules.

与现有技术相比较,本发明具有以下优点:因本发明的导光元件将棱镜板整合在一起,使得其具有聚光的功能。 Compared with the prior art, the present invention has the following advantages: because the light guide member according to the present invention will prism plates together, so that it has a condensing function. 其采用金字塔形棱镜结构和相应网点,通过网点的散射、反射和棱镜结构的聚光,可提高导光元件出射光束的强度。 Employing pyramidal prism structure and the respective outlets, by concentrating scattering, reflection dots and the prism structure, the light guide member can be improved outgoing beam intensity. 此外,该棱镜结构是均匀分布在导光元件出射面,与现有技术的非均匀分布相比,其更易于实现。 In addition, the prismatic structures are evenly distributed across the exit surface of the light guide member, as compared with the non-uniform distribution of the prior art, it is easier to implement.

【附图说明】图1是一种现有技术背光系统的立体分解图。 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective exploded view of a prior art backlight system.

图2是另一种现有技术背光系统的立体图。 FIG 2 is a perspective view of another prior art backlight system.

图3是图2所示的现有技术背光系统的俯视图。 FIG 3 is a plan view of a prior art backlight system shown in FIG.

图4是本发明导光元件第一具体实施方式的立体图。 4 is a perspective view of a first specific embodiment of the present invention, the light guide member embodiment.

图5是图4所示导光元件网点结构的分布示意图。 FIG 5 is a schematic view of a light guide element distributed network structure shown in FIG.

图6是图4所示导光元件棱镜结构的分布示意图。 FIG 6 is a schematic view of the distribution of the prism light guide element structure shown in FIG.

图7是本发明导光元件第二具体实施方式的立体图。 7 is a perspective view of a second specific embodiment of the present invention, the light guide member embodiment.

图8是图7所示导光元件网点结构的分布示意图。 FIG 8 is a schematic view of a light guide element distributed network configuration shown in Figure 7.

【具体实施方式】请参照图4,是本发明导光元件第一具体实施方式的立体图。 DETAILED DESCRIPTION OF THE INVENTION Referring to FIG. 4 is a perspective view of a first specific embodiment of the present invention, the light guide member embodiment. 该导光元件300为一体成型的长方体结构,其材料可为聚乙烯、聚碳酸脂等,包括一入射面321、一出射面322和一底面323,其中,入射面321接收由其侧部光源310发出的光束,并将该光束导入导光元件300内部,该底面323将该导入的光束反射、散射,形成沿各方向均匀发散的散射光束,该出射面322将该均匀发散的光束导出导光元件300,导向一液晶显示面板(图未示)。 The light guide member 300 is integrally formed a rectangular parallelepiped configuration, which may be a polyethylene material, such as polycarbonate, comprising 321, an exit surface of an incident surface 322 and a bottom 323, wherein the incident surface side of the light source 321 by the receiving emitted light beam 310, and the light beam into the light guide member 300, the light beam reflected by the bottom surface 323 of the introduced scattering are formed uniformly in all directions diverging scattered light beam, the exit surface 322 of the light beam derived turned uniformly divergent optical element 300, a liquid crystal display panel guide (not shown).

请参照图5,底面323分布有多个均匀排布的网点324,该网点324可通过网点印刷、咬花或刻蚀等方式形成在底面323上,其将入射面321导入的光束进行反射、散射,形成沿各方向均匀散射的光束。 Referring to FIG 5, the bottom surface 323 arranged uniformly distributed plurality of outlets 324, 324 via the network printing dots, flowers and other biting or etching is formed on the bottom surface 323, which is introduced into a light beam incident surface 321 is reflected, scattered uniformly in all directions is formed scattered light.

请参照图6,出射面322上均匀分布有多个棱镜结构350,该棱镜结构350大致呈金字塔形,其将出射面322导出的光束进行汇聚,使均匀沿各方向发散的出射光束汇聚于预定范围内,从而使得该预定范围内的出射光束强度增加,进而提高导光元件出光亮度。 Referring to FIG. 6, on the exit surface 322 uniformly distributed plurality of prismatic structures 350, the prism structure 350 substantially pyramid, which the 322 derived exit surface beam converge uniformly in all directions diverging emitted beams converge on the predetermined the range, so that the increase of the emitted beam intensity within a predetermined range, thereby improving the brightness of the light guide member.

请参照图7,是本发明导光元件第二具体实施方式的立体图。 Referring to FIG. 7 is a perspective view of a second specific embodiment of the present invention the light guide element. 该导光元件400为一体成型的楔形体结构,其材料可为聚乙烯、聚碳酸脂等,包括一入射面421、一出射面422和一底面423,该底面423和入射面421倾斜相交。 The light guide member 400 is integrally formed wedge-shaped structure, which may be a polyethylene material, such as polycarbonate, comprises an incident surface 421, an exit surface 422 and a bottom surface 423, bottom surface 423 and the incident surface 421 intersect obliquely. 其中,入射面421接收由其侧部的光源(图未示)发出的光束,并将该光束导入导光元件400内部,该底面423将该导入的光束反射、散射,形成沿各方向均匀发散的散射光束,该出射面422将该均匀发散的光束导出导光元件400,导向一液晶显示面板(图未示)。 Wherein the incident surface receiving the light beam by a light source (not shown) emitted from the side portion 421, and the light beam into the light guide member 400 inside, the bottom surface 423 of the introduced beam reflecting, scattering, divergence is formed uniformly in each direction the scattered light beam, the exit surface 422 uniformly divergent beam deriving the light guide member 400, guide a liquid crystal display panel (not shown).

请参照图8,底面423上分布有多个网点424,该网点424可通过网点印刷、咬花或刻蚀等方式形成在底面423,其沿远离光源(图未示)方向呈由疏到密方式排布,将入射面421导入的光束进行反射、散射,形成沿各方向均匀散射的光束。 Referring to FIG. 8, a plurality of outlets 424 are distributed on the bottom surface 423, 424 by the network printing dots, flower or other bite etching is formed on the bottom surface 423, which is a direction away from a light source (not shown) as a direction from sparse to dense arrangement, and the introduced light beam incident surface 421 is reflected, scattered, the scattered in all directions to form a uniform beam.

为获得更好的导光效果,可采用镀膜方式进一步增强光束的利用率,通常入射面321、421和出射面322、422可镀抗反射膜,底面323、423可镀反射膜。 For better light guide effect, the coating can be further enhanced utilization mode beam, usually 321, 421 incident surface and the exit surface may be plated with anti-reflection film 322, 422, 323,423 may be coated bottom surface of the reflective film.

Claims (7)

1.一种导光元件,包括一用来接收光束的入射面、一与入射面相连的底面和一与底面相对并将光束导出该导光元件的出射面,其特征在于:该导光元件的底面分布有多个网点,该导光元件的出射面具多个规则均匀排布的金字塔形棱镜结构。 1. A light guide element, comprising a surface for receiving incident light beam, a bottom surface and connected to the incident surface and a bottom surface opposite the exit surface and the light beam deriving the light guide member, wherein: the light guide member the bottom surface of the distribution of a plurality of outlets, a plurality of the rules of the mask emitted light guide element rows of pyramid-shaped prism structure uniform fabric.
2.如权利要求1所述的导光元件,其特征在于:该底面垂直于入射面。 2. A light guide member as claimed in claim 1, wherein: the bottom surface perpendicular to the incident plane.
3.如权利要求2所述的导光元件,其特征在于:该底面的网点为均匀分布。 A light guide member as claimed in claim 2, wherein: the bottom outlets evenly distributed.
4.如权利要求1所述的导光元件,其特征在于:该底面和入射面倾斜相交。 A light guide member as claimed in claim 1, wherein: the intersection of the bottom surface and an inclined entrance surface.
5.如权利要求4所述的导光元件,其特征在于:该底面的网点沿远离光源侧方向由疏到密分布。 5. A light guide member as claimed in claim 4, wherein: the distribution network from sparse to dense from the light source along the bottom side direction.
6.如权利要求5所述的导光元件,其特征在于:该底面具有反射膜。 The light guide member as claimed in claim 5, characterized in that: the bottom surface of a reflective film.
7.如权利要求6所述的导光元件,其特征在于:该入射面和出射面具有抗反射膜。 7. A light guide member as claimed in claim 6, wherein: the incident surface and the exit surface having the antireflection film.
CNA021521913A 2002-12-05 2002-12-05 Light conducting element CN1504776A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100406990C (en) 2004-08-02 2008-07-30 凛宜股份有限公司 The light guide plate having a triangular prism structure type
CN100426078C (en) 2004-12-04 2008-10-15 鸿富锦精密工业(深圳)有限公司;群创光电股份有限公司 Light guide plate and back light module
US7656597B2 (en) 2007-09-17 2010-02-02 Hon Hai Precision Industry Co., Ltd. Prism sheet and backlight module using the same
CN100594393C (en) 2005-07-13 2010-03-17 三星电子株式会社 Prism member, backlight assembly and display device
CN101349398B (en) 2007-07-20 2010-12-22 深圳大学;徐平 Integrated microstructure backlight system
CN101299113B (en) 2007-04-30 2011-06-29 鸿富锦精密工业(深圳)有限公司 Back light module unit and optical panel thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100406990C (en) 2004-08-02 2008-07-30 凛宜股份有限公司 The light guide plate having a triangular prism structure type
CN100426078C (en) 2004-12-04 2008-10-15 鸿富锦精密工业(深圳)有限公司;群创光电股份有限公司 Light guide plate and back light module
CN100594393C (en) 2005-07-13 2010-03-17 三星电子株式会社 Prism member, backlight assembly and display device
US7824066B2 (en) 2005-07-13 2010-11-02 Samsung Electronics Co., Ltd. Prism member, backlight assembly provided with the same, and display device provided with the same
CN101299113B (en) 2007-04-30 2011-06-29 鸿富锦精密工业(深圳)有限公司 Back light module unit and optical panel thereof
CN101349398B (en) 2007-07-20 2010-12-22 深圳大学;徐平 Integrated microstructure backlight system
US7656597B2 (en) 2007-09-17 2010-02-02 Hon Hai Precision Industry Co., Ltd. Prism sheet and backlight module using the same
CN101393279B (en) 2007-09-17 2010-12-01 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 Back light module unit and prismatic lens thereof

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