WO2014019241A1 - 一种光照组件 - Google Patents

一种光照组件 Download PDF

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Publication number
WO2014019241A1
WO2014019241A1 PCT/CN2012/079706 CN2012079706W WO2014019241A1 WO 2014019241 A1 WO2014019241 A1 WO 2014019241A1 CN 2012079706 W CN2012079706 W CN 2012079706W WO 2014019241 A1 WO2014019241 A1 WO 2014019241A1
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WIPO (PCT)
Prior art keywords
light
plate
illumination assembly
guiding plate
prism
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PCT/CN2012/079706
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English (en)
French (fr)
Inventor
宋涛
丁涛
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US13/583,219 priority Critical patent/US20140034850A1/en
Publication of WO2014019241A1 publication Critical patent/WO2014019241A1/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects
    • 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
    • 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
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer

Definitions

  • the invention relates to the field of illumination technology, and in particular to an illumination assembly for realizing liquid crystal alignment.
  • the liquid crystal display technology has become more and more mature.
  • the liquid crystal panel uses the electric field to control the geometrical changes of the liquid crystal molecules to change the transmission path and phase of the light, and in order to control the order and direction of the liquid crystal molecules, the liquid crystal alignment is generally continued.
  • the process of achieving alignment is to illuminate the liquid crystal with ultraviolet light to polymerize the polymer in the liquid crystal.
  • the intensity and uniformity of ultraviolet light directly affect the quality of alignment of the liquid crystal panel. Since the liquid crystal panel has a planar shape, it is required to emit a light source module having uniform ultraviolet light and a liquid crystal panel.
  • FIG. 1 is a schematic structural diagram of a light source module in the prior art.
  • the light source module includes a reflector 110 and a plurality of ultraviolet light sources 120.
  • the ultraviolet light source 120 is a point light source or a line light source, and the plurality of ultraviolet light sources 120 are combined into a surface light source to emit uniform ultraviolet light for illuminating the liquid crystal panel (not shown).
  • the reflector 110 reflects the ultraviolet light emitted from the ultraviolet light source 120 to the liquid crystal panel.
  • the technical problem to be solved by the present invention is to provide an illumination component, which can reduce the number of light sources used and improve the utilization of light.
  • the present invention adopts a technical solution to provide an illumination component for illuminating a liquid crystal panel to realize liquid crystal alignment, which comprises a light guide plate, a light source, a reflection plate and a prism plate.
  • the light guiding plate is made of quartz glass, and the light guiding plate comprises a light emitting surface, a light incident surface of the adjacent light emitting surface and a bottom surface of the opposite light emitting surface, and a diffusion mesh dot is printed on the bottom surface of the light guiding plate, and the diffusion mesh point is used for reflecting and guiding the light.
  • the light source is set to the light incident surface of the light guide plate.
  • the reflector is placed adjacent to the bottom surface of the light guide.
  • the prism plate is made of quartz glass, and the prism plate has a groove-like prism structure on one surface, and the other surface of the prism plate is disposed adjacent to the light-emitting surface of the light guide plate.
  • the hydroxyl content in the light guiding plate is less than or equal to 100 ppm
  • the hydroxyl content in the prism plate is less than or equal to 50 ppm
  • the light source is an ultraviolet lamp.
  • the content of hydroxyl groups in the light guiding plate is less than or equal to 50 ppm.
  • the illumination component further includes a hood, and the hood surrounds the light source to reflect the light, so that the light enters the light incident surface of the light guide plate.
  • the ultraviolet light is at least two.
  • the diffusion dots are made of metal lead.
  • the present invention adopts a technical solution to provide an illumination component for illuminating a liquid crystal panel to realize liquid crystal alignment, which comprises a light guiding plate and a light source.
  • the light guiding plate is made of quartz glass, and the light guiding plate comprises a light emitting surface, a light incident surface of the adjacent light emitting surface and a bottom surface of the opposite light emitting surface.
  • the light source is set to the light incident surface of the light guide plate.
  • the content of hydroxyl groups in the light guiding plate is less than or equal to 100 ppm.
  • the illumination component further comprises a reflector, and the reflector is disposed adjacent to the bottom surface of the light guide panel.
  • the illumination assembly further includes a prism plate having a prismatic prism structure on one surface, and the other surface of the prism plate is disposed adjacent to the light exit surface of the light guide plate.
  • the prism plate is made of quartz glass, and the hydroxyl content of the prism plate is less than or equal to 50 ppm.
  • the content of hydroxyl groups in the light guiding plate is less than or equal to 50 ppm.
  • the illumination component further includes a hood, and the hood surrounds the light source to reflect the light, so that the light enters the light incident surface of the light guide plate.
  • the light source is an ultraviolet light.
  • the ultraviolet light is at least two.
  • the bottom surface of the light guiding plate is printed with a diffusion mesh point for reflecting and guiding the light.
  • the diffusion dots are made of metal lead.
  • the illumination assembly of the embodiment of the present invention is provided with a light guiding plate and a light source, and the light guiding plate is made of quartz glass.
  • the hydroxyl content of the light guiding plate is less than or equal to 100 ppm, and the light source is directly facing the light incident surface of the light guiding plate.
  • the light emitted by the light source is guided by the light guiding plate and emitted from the light emitting surface of the light guiding plate to form a surface light source, which can reduce the number of light sources used and improve the utilization of light.
  • FIG. 1 is a schematic structural view of a light source module of the prior art
  • FIG. 2 is a schematic structural view of an embodiment of an illumination assembly of the present invention.
  • FIG. 2 is a schematic structural view of an embodiment of the illumination assembly of the present invention.
  • the liquid crystal panel 300 is shown together for the sake of clarity.
  • the illumination assembly is used to illuminate the liquid crystal panel 300 to achieve liquid crystal alignment.
  • the illumination assembly includes a light guide plate 210, a light source 220, a reflector 230, a prism plate 240, and a hood 250.
  • the light guide plate 210 includes a light exit surface 211, a light incident surface 212 of the adjacent light exit surface 211, and a bottom surface 213 opposite to the light exit surface 211.
  • the light guide plate 210 is made of quartz glass. Unlike ordinary glass or transparent plastic materials, quartz glass has high transmittance for certain light, such as ultraviolet light, while ordinary glass or transparent plastic materials cannot transmit ultraviolet light or have low transmittance.
  • the light guiding plate 210 contains a hydroxyl group having a hydroxyl group content of less than or equal to 100 ppm.
  • the light guide plate has a hydroxyl group content of less than or equal to 50 ppm, the transmittance of the ultraviolet light is greater than or equal to 90%, and the effective use time of the light guide plate 210 can reach 2000 hours. After the effective use time, the ultraviolet light The transmittance is reduced to 80% of the initial rate.
  • a diffusion dot 214 (DOT) is printed on the bottom surface of the light guiding plate 210. PATTERN), diffusion dots 214 are used to reflect and direct light.
  • the diffusion dots 214 are made of a material having high reflectivity and not absorbing light. In the present embodiment, the diffusion dots 214 are made of metallic lead.
  • the light source 220 is disposed opposite the light incident surface 212 of the light guide plate 210.
  • the light source 220 is an ultraviolet light for emitting ultraviolet light.
  • the invention does not limit the number of ultraviolet lamps, and the number of ultraviolet lamps is at least two, so that the four light incident surfaces 212 of the light guiding plate 210 are oppositely disposed with ultraviolet lamps.
  • the reflector 230 is disposed adjacent to the bottom surface 213 of the light guide plate 210, and is capable of reflecting light emitted from the bottom surface 213 into the light guide plate 210.
  • the prism plate 240 has a groove-shaped prism structure 241, and the other surface of the prism plate 240 is flat and disposed adjacent to the light-emitting surface 211 of the light guiding plate 210.
  • the light emitted from the prism plate 240 illuminates the liquid crystal panel 300.
  • the prism sheet 240 is also made of quartz glass, and the hydroxyl content of the prism sheet 240 is less than or equal to 50 ppm.
  • the hood 250 surrounds the light source 220 to reflect light such that the light enters the light incident surface 212 of the light guide plate 210.
  • the light guide plate 210 is capable of guiding light to convert a single point (line) light source into a surface light source, which can reduce the number of light sources 220 used and improve light utilization. By providing the reflector 230 and the hood 250, the light utilization efficiency can be further improved.
  • the prism plate 240 is matched with the light guiding plate 210 to sufficiently improve the uniformity of illumination. ,
  • the illumination assembly may only include the light guide plate 210 and the light source 220.
  • the light guiding plate 210 is made of quartz glass in which the hydroxyl group content is greater than or equal to 100 ppm.
  • the light source 220 is disposed opposite the light incident surface 212 of the light guide plate 210.
  • the light exit surface 211 of the light guide plate 210 is disposed directly adjacent to the liquid crystal panel 300.
  • the lighting component can also meet the demand in the case of low illumination uniformity.
  • the illumination assembly of the embodiment of the present invention is provided with a light guiding plate and a light source, and the light guiding plate is made of quartz glass.
  • the hydroxyl content of the light guiding plate is less than or equal to 100 ppm, and the light source is set to the light incident surface of the light guiding plate.
  • the light emitted by the light source is guided by the light guiding plate and emitted from the light emitting surface of the light guiding plate to form a surface light source, which can reduce the number of used light sources and improve the utilization of light.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)

Description

一种光照组件
【技术领域】
本发明涉及光照技术领域，特别是涉及一种用于实现液晶配向的光照组件。
【背景技术】
液晶显示技术已经越来越成熟，液晶面板利用电场控制液晶分子的几何变化来改变光的传输路径与相位，而为了控制液晶分子的排列次序及方向，一般会继续进行液晶的配向。实现配向的过程是利用紫外光照射液晶，使液晶中的高分子发生聚合。紫外光的照射强度和均匀度会直接影响液晶面板配向的品质。由于液晶面板呈面状，因此需要发出紫外光均匀的与液晶面板一致的光源模组。
请参阅图1，图1是现有技术一种光源模组的结构示意图。该光源模组包括反光板110以及多个紫外光源120。紫外光源120为点光源或线光源，多个紫外光源120组合成面光源，发出光照均匀的紫外光线，用于照射液晶面板（未标示）。反光板110将紫外光源120发出的紫外光线反射至液晶面板。
但是，现有技术的光源模组需要使用数量较多的紫外光源120，使得光源模组的设计、安装、调试、维修以及备品更换均较为复杂，而且紫外光源120与液晶面板的间距对光照强度和均匀度会产生较大影响。
【发明内容】
本发明主要解决的技术问题是提供一种光照组件，能够减少使用光源的数量，提高光的利用率。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种光照组件，用于照射液晶面板，以实现液晶配向，其包括光线引导板、光源、反射板和棱镜板。光线引导板由石英玻璃制成，光线引导板包括出光面，相邻出光面的入光面以及相对出光面的底面，光线引导板的底面印刷有扩散网点，扩散网点用于反射并引导光线。光源正对光线引导板的入光面设置。反光板邻近光线引导板的底面设置。棱镜板由石英玻璃制成，棱镜板一表面具有沟槽状的棱镜结构，棱镜板另一表面邻近光线引导板的出光面设置。其中，光线引导板中羟基含量小于或等于100ppm，棱镜板中羟基含量小于或等于50ppm，光源为紫外光灯。
其中，光线引导板中羟基含量小于或等于50ppm。
其中，光照组件还包括遮光罩，遮光罩包围光源，以反射光线，使光线进入光线引导板的入光面。
其中，紫外光灯为至少两个。
其中，扩散网点由金属铅制成。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种光照组件，用于照射液晶面板，以实现液晶配向，其包括光线引导板和光源。光线引导板由石英玻璃制成，光线引导板包括出光面，相邻出光面的入光面以及相对出光面的底面。光源正对光线引导板的入光面设置。其中，光线引导板中羟基含量小于或等于100ppm。
其中，光照组件还包括反光板，反光板邻近光线引导板的底面设置。
其中，光照组件还包括棱镜板，棱镜板一表面具有沟槽状的棱镜结构，棱镜板另一表面邻近光线引导板的出光面设置。
其中，棱镜板由石英玻璃制成，棱镜板中羟基含量小于或等于50ppm。
其中，光线引导板中羟基含量小于或等于50ppm。
其中，光照组件还包括遮光罩，遮光罩包围光源，以反射光线，使光线进入光线引导板的入光面。
其中，光源为紫外光灯。
其中，紫外光灯为至少两个。
其中，光线引导板的底面印刷有扩散网点，扩散网点用于反射并引导光线。
其中，扩散网点由金属铅制成。
综上所述，本发明实施方式的光照组件通过设置光线引导版和光源，光线引导版由石英玻璃制成，光线引导板中羟基含量小于或等于100ppm，光源正对光线引导版的入光面设置，光源发出的光经光线引导版的引导，从光线引导版的出光面出射，形成面光源，能够减少使用光源的数量，提高光的利用率。
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，而可依照说明书的内容予以实施，并且为了让本发明的上述和其他目的、特征和优点能够更明显易懂，以下特举较佳实施例，并配合附图，详细说明如下。
【附图说明】
图1是现有技术一种光源模组的结构示意图；
图2是本发明光照组件一实施方式的结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，均属于本发明保护的范围。
请参阅图2，图2是本发明光照组件一实施方式的结构示意图。为了清楚显示，图中一并示出了液晶面板300。
光照组件用于照射液晶面板300，以实现液晶配向。光照组件包括光线引导版210、光源220、反光板230、棱镜板240以及遮光罩250。
光线引导版210包括出光面211、相邻出光面211的入光面212以及相对出光面211的底面213。光线引导版210由石英玻璃制成。石英玻璃不同于普通的玻璃或透明塑胶材料，它对于某些光线具有高透过率，例如紫外光线，而普通的玻璃或透明塑胶材料无法透过紫外光线或者透过率很低。光线引导版210含有羟基，羟基含量小于或等于100ppm。优选地，光线引导板中羟基含量小于或等于50ppm，能够使紫外光线的透过率大于或等于90%，并且光线引导版210的有效使用时间可以达到2000小时，经过有效使用时间后，紫外光线的透过率降低至初始时的80%。进一步地，在光线引导版210的底面印刷有扩散网点214（DOT PATTERN），扩散网点214用于反射并引导光线。扩散网点214由具有高反射率且不吸收光线的材料制成，在本实施方式中，扩散网点214由金属铅制成。
光源220正对光线引导版210的入光面212设置。在本实施方式中，光源220为紫外光灯，用以发出紫外光线。本发明并不限定紫外光灯的数量，紫外光灯的数量为至少两个，使得光线引导版210的四个入光面212均相对设置有紫外光灯。
反光板230邻近光线引导版210的底面213设置，能够将从底面213出射的光线反射进入光线引导版210。
棱镜板240一表面具有沟槽状的棱镜结构241，棱镜板240另一表面为平面，且邻近光线引导版210的出光面211设置。从棱镜板240出射的光线照射液晶面板300。在本实施方式中，棱镜板240也由石英玻璃制成，且棱镜板240中羟基含量小于或等于50ppm。
遮光罩250包围光源220，以反射光线，使光线进入光线引导版210的入光面212。
光线导光板210能够引导光线，将单一点（线）光源转换为面光源，能够减少使用光源220的数量，并且提高光线利用率。通过设置反光板230和遮光罩250，能够进一步提高光线利用率。而棱镜板240与光线引导版210配合，能够充分改善光照均匀度。,
在变型实施方式中，光照组件可只包括光线引导版210和光源220。光线引导版210由石英玻璃制成，其中羟基含量大于或等于100ppm。光源220正对光线引导版210的入光面212设置。光线引导版210的出光面211直接邻近液晶面板300设置。在对光照均匀度要求不高的情况下，该光照组件同样可以满足需求。
通过上述方式，本发明实施方式的光照组件通过设置光线引导版和光源，光线引导版由石英玻璃制成，光线引导板中羟基含量小于或等于100ppm，光源正对光线引导版的入光面设置，光源发出的光经光线引导版的引导，从光线引导版的出光面出射，形成面光源，能够减少使用光源的数量，提高光的利用率。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (15)

  1. 一种光照组件，用于照射液晶面板，以实现液晶配向，其中，包括：
    光线引导板，所述光线引导板由石英玻璃制成，所述光线引导板包括出光面，相邻所述出光面的入光面以及相对所述出光面的底面，所述光线引导板的底面印刷有扩散网点，所述扩散网点用于反射并引导光线；
    光源，所述光源正对所述光线引导板的入光面设置；
    反射板，所述反光板邻近所述光线引导板的底面设置；
    棱镜板，所述棱镜板由石英玻璃制成，所述棱镜板一表面具有沟槽状的棱镜结构，所述棱镜板另一表面邻近所述光线引导板的出光面设置；
    其中，所述光线引导板中羟基含量小于或等于100ppm，所述棱镜板中羟基含量小于或等于50ppm，所述光源为紫外光灯。
  2. 根据权利要求1所述的光照组件，其中，所述光线引导板中羟基含量小于或等于50ppm。
  3. 根据权利要求1所述的光照组件，其中，所述光照组件还包括遮光罩，所述遮光罩包围所述光源，以反射光线，使光线进入所述光线引导板的入光面。
  4. 根据权利要求1所述的光照组件，其中，所述紫外光灯为至少两个。
  5. 根据权利要求1所述的光照组件，其中，所述扩散网点由金属铅制成。
  6. 一种光照组件，用于照射液晶面板，以实现液晶配向，其中，包括：
    光线引导板，所述光线引导板由石英玻璃制成，所述光线引导板包括出光面，相邻所述出光面的入光面以及相对所述出光面的底面；
    光源，所述光源正对所述光线引导板的入光面设置；
    其中，所述光线引导板中羟基含量小于或等于100ppm。
  7. 根据权利要求6所述的光照组件，其中，所述光照组件还包括反光板，所述反光板邻近所述光线引导板的底面设置。
  8. 根据权利要求6所述的光照组件，其中，所述光照组件还包括棱镜板，所述棱镜板一表面具有沟槽状的棱镜结构，所述棱镜板另一表面邻近所述光线引导板的出光面设置。
  9. 根据权利要求8所述的光照组件，其中，所述棱镜板由石英玻璃制成，所述棱镜板中羟基含量小于或等于50ppm。
  10. 根据权利要求6所述的光照组件，其中，所述光线引导板中羟基含量小于或等于50ppm。
  11. 根据权利要求6所述的光照组件，其中，所述光照组件还包括遮光罩，所述遮光罩包围所述光源，以反射光线，使光线进入所述光线引导板的入光面。
  12. 根据权利要求6所述的光照组件，其中，所述光源为紫外光灯。
  13. 根据权利要求12所述的光照组件，其中，所述紫外光灯为至少两个。
  14. 根据权利要求6所述的光照组件，其中，所述光线引导板的底面印刷有扩散网点，所述扩散网点用于反射并引导光线。
  15. 根据权利要求14所述的光照组件，其中，所述扩散网点由金属铅制成。
PCT/CN2012/079706 2012-08-01 2012-08-06 一种光照组件 Ceased WO2014019241A1 (zh)

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