WO2018120318A1 - 照射灯、液晶配向的方法及装置 - Google Patents

照射灯、液晶配向的方法及装置 Download PDF

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WO2018120318A1
WO2018120318A1 PCT/CN2017/071238 CN2017071238W WO2018120318A1 WO 2018120318 A1 WO2018120318 A1 WO 2018120318A1 CN 2017071238 W CN2017071238 W CN 2017071238W WO 2018120318 A1 WO2018120318 A1 WO 2018120318A1
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light
liquid crystal
illumination lamp
boxes
lamp
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PCT/CN2017/071238
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English (en)
French (fr)
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赵仁堂
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深圳市华星光电技术有限公司
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Priority to US15/329,361 priority Critical patent/US20180341154A1/en
Publication of WO2018120318A1 publication Critical patent/WO2018120318A1/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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
    • 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
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K5/00—Irradiation devices
    • G21K5/02—Irradiation devices having no beam-forming means
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/13775—Polymer-stabilized liquid crystal layers

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to an illumination lamp for liquid crystal alignment, a method and device for liquid crystal alignment.
  • the liquid crystal spreads the entire picture in the form of a thin layer.
  • the liquid crystal molecules need to be arranged neatly and orderly in a certain direction (referred to as "orientation").
  • orientation When light is irradiated, whether light is transmitted or blocked is dependent on the orientation of the liquid crystal molecules. Therefore, it is absolutely necessary that all the liquid crystal molecules are aligned in the same direction at all times.
  • the nematic liquid crystal used as the mainstream is a rod-shaped molecule, and the rod-shaped molecules themselves can be naturally concentrated in a certain direction within a certain angle range, but if uncontrolled, the arrangement often has a certain degree of dispersion. .
  • the liquid crystal molecules In order to meet the requirements of the display, the liquid crystal molecules need to be arranged in an orderly manner, but the force naturally occurring between the molecules is not enough, and must be artificially controlled.
  • the most commonly used liquid crystal alignment technology is PS-VA (Polymer Stabilized Vertical Alignment).
  • PS-VA Polymer Stabilized Vertical Alignment
  • the liquid crystal contains reactive monomers, so he has a
  • the reactive monomer in the liquid crystal is reacted by irradiating the substrate with UV light, thereby forming a pretilt angle of the liquid crystal. This process is called ultraviolet light alignment.
  • an ultraviolet light source In the ultraviolet alignment process, an ultraviolet light source is required.
  • the main illuminators of the ultraviolet light source used in the prior art are metal halide lamps or fluorescent lamps, which have low luminous efficiency and low lifetime, and are generally only a few thousand hours. Lifespan, and these illuminants are prone to chipping and contain harmful substances (such as mercury), and they emit light in a wide range of wavelengths, including many unwanted or even harmful wavelengths of light, as shown in Figure 1.
  • the wavelength of the light emitted by the illuminator in the technology It can be seen from the figure that the wavelength range of these light is higher. Wide, however, in the actual UV alignment technology, only a small wavelength of effective light is needed.
  • Too short wavelength light can cause the explosion of the reactive monomer and damage the liquid crystal structure.
  • Long-wavelength light as shown in box 3 in the figure, causes heat generation. Therefore, in the prior art, other auxiliary equipment is needed to filter out unnecessary light, and it is also necessary to increase the cooling device to cool the illuminator, thereby increasing Unnecessary costs.
  • the illuminators in the prior art are usually arranged in the shape of a lamp tube, and require a high voltage to excite the illuminating, and the energy consumption is high, and when the machine is large, in order to match the size of the machine, the lamp needs to be very
  • the long, long lamp has a higher driving voltage, which further increases the energy consumption, and the uniformity of the long lamp is not uniform.
  • the present invention provides an illumination lamp, and at the same time, a method and a device for liquid crystal orientation are proposed.
  • the illumination lamp of the present invention comprises one or more light boxes, each of which is provided with a plurality of illuminants, each of which emits light from the inside to the outside through the plurality of illuminators, the light box
  • the light emitting surfaces are in the same plane.
  • the light is ultraviolet light.
  • the ultraviolet light emitting lamp can directly provide the ultraviolet light used for liquid crystal orientation in the liquid crystal alignment process, and no auxiliary equipment is needed to filter out unnecessary light, thereby further reducing the cost, and further, since the ultraviolet light is not This will damage the liquid crystal structure, which improves the quality of the liquid crystal panel.
  • the illuminant is a light emitting diode (LED).
  • the wavelength range of the light-emitting diode is relatively concentrated.
  • the selection of the semiconductor material and the change of the material doping method can directly obtain the ultraviolet light required for the liquid crystal alignment, and the LED light source does not contain harmful substances such as mercury, and the luminous efficiency is high and consumed. It can reduce the life and can reach tens of thousands to tens of thousands of hours, thus avoiding the frequent replacement of the light box in production, greatly reducing the operating cost, increasing the productivity, and at the same time, because the LED size is small, it can be used in the required manner. It is placed inside the light box to further increase the flexibility of production.
  • the liquid crystal alignment can be sufficiently realized, and since the light of other wavelengths is no longer contained, the liquid crystal structure is not damaged, and heat generation is not caused, and the product is not only improved. Quality, and no need for auxiliary equipment for cooling, further Reduced production costs.
  • the illumination intensity of the LED is adjusted by adjusting the voltage across the LED, the illumination intensity of the illumination lamp can be controlled according to the needs of the process to match the process, thereby further reducing energy consumption and improving product quality.
  • the light-emitting surface of the light box has a circular or polygonal shape. Such a shape is convenient for manufacturing.
  • the needs of a common square liquid crystal panel can be applied, and the number of rows and the number of columns of the light box are set according to the size of the liquid crystal panel; when a plurality of the light boxes are arranged in a concentric manner, The need for a circular liquid crystal panel can be applied, and the number and spacing of concentric circles can be set according to the diameter of the liquid crystal panel, thereby avoiding the arrangement of redundant light boxes and achieving the purpose of energy saving.
  • the invention also proposes a liquid crystal alignment method, characterized in that the substrate is irradiated with the illumination lamp proposed by the invention to form a pretilt angle of the liquid crystal, thereby completing the liquid crystal alignment.
  • the invention also provides a device, characterized in that it comprises an illumination lamp according to the invention, wherein the device is arranged with an organic table and an illumination lamp in order from bottom to top, and the liquid crystal cell is placed on the machine table, the illumination The light emitted by the lamp illuminates the liquid crystal cell to complete the liquid crystal orientation.
  • the illumination lamp proposed by the present invention can directly provide the ultraviolet light used for liquid crystal orientation in the liquid crystal alignment process, and no auxiliary equipment is needed to filter out unnecessary light, thereby further reducing the cost, and further, since the ultraviolet light is not This will damage the liquid crystal structure, which improves the quality of the liquid crystal panel.
  • the light-emitting diode is used to emit ultraviolet light, the energy consumption is further reduced, the operation of frequently replacing the lamp in production is avoided, and the productivity is improved.
  • FIG. 1 is a schematic view showing a wavelength range of light emitted by an illuminant in the prior art
  • FIG. 2 is a schematic view showing a light-emitting surface of an illumination lamp in which the light boxes are arranged in a matrix;
  • FIG. 3 is a schematic view showing a light-emitting surface of an illumination lamp arranged in a concentric manner in a light box;
  • Figure 4 is a schematic view showing the internal structure of the light box
  • Figure 5 is a schematic view showing the wavelength range of light rays of the illumination lamp of the present invention.
  • FIG. 6 is a schematic structural view of a liquid crystal alignment device
  • FIG. 7a is a schematic structural view of an illumination source composed of an illumination lamp of the present invention.
  • FIG. 7b is a schematic structural view of an illumination source composed of a prior art lamp tube.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the lamp body 12 of the illumination lamp 10 has a quadrangular shape, and the lamp body 12 includes a plurality of light boxes 11 each having a plurality of light-emitting bodies disposed therein.
  • the light box 11 emits light from the inside to the outside through a plurality of internal illuminators, and the light-emitting surfaces of each of the light boxes 11 are all located in the same plane.
  • the shape of the light-emitting surface of the light box 11 is quadrangular.
  • the shape of the light-emitting surface of the light box 11 may be circular or other shapes, and the shape of the light-emitting surface of the light box 11 may be provided according to actual needs.
  • the plurality of light boxes 11 are arranged in a matrix, as shown in FIG. 2, the light boxes 11 in FIG. 2 are arranged in three rows and nine columns, and the specific number of rows and columns can be determined according to the size of the actual liquid crystal panel, so that This eliminates the need for excess light boxes and reduces energy consumption and costs.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the lamp body 22 of the illumination lamp 20 has a circular shape, and the lamp body 22 includes a plurality of light boxes 21, and each of the light boxes 21 is provided with a plurality of light-emitting elements.
  • the light box 21 emits light from the inside to the outside through a plurality of internal illuminators, and the light emitting surfaces of each of the light boxes 21 are all located in the same plane.
  • the shape of the light-emitting surface of the light box 21 is circular.
  • the shape of the light-emitting surface of the light box 21 may have other shapes, and the shape of the light-emitting surface of the light box 21 may be provided according to actual needs.
  • the plurality of light boxes 21 are arranged in a circular manner concentric with the outer circumference of the lamp body 22.
  • the light boxes 21 in FIG. 3 are arranged in three layers of concentric circles, and this arrangement is particularly suitable.
  • the number of specific concentric circles and the number of light boxes on each concentric circle can be determined according to the size of the actual liquid crystal panel, so that unnecessary light boxes can be avoided, and energy consumption and cost can be reduced.
  • the illuminant 112 is preferably a light-emitting diode.
  • the low energy consumption and small size characteristics of the light-emitting diode make the structure of the light box 11 more flexible, reduce energy consumption, and the wavelength range of the light-emitting diode is concentrated, and the selection of the semiconductor material and the doping method of the material are adopted.
  • the liquid crystal is required to align the required ultraviolet light, and the LED light source does not contain harmful substances such as mercury, and has high luminous efficiency, low energy consumption, and a life span of tens of thousands to hundreds of thousands of hours, thus avoiding frequent replacement of the light box in production.
  • the operation greatly reduces the operating cost.
  • the wavelength of the light emitted by the illuminator 112 is controlled within a range of 280 nm to 400 nm, as shown in FIG. 5, a schematic diagram of the wavelength range of the light emitted by the illuminating lamp of the present invention can be seen by comparing FIG. 5 with FIG.
  • the light emitted by the illumination lamp of the present invention no longer contains light of other wavelengths, so that the liquid crystal structure is not damaged, and heat generation is not caused, which further reduces the production cost and improves the product quality.
  • illuminants may be provided inside the light box 21 as needed, and the illuminant is preferably a light emitting diode.
  • the illumination intensity of the LED can be adjusted by adjusting the voltage across the LED, thereby adjusting the illumination intensity of the illumination lamp to meet the needs of different stages in the liquid crystal alignment process.
  • the substrate is irradiated with ultraviolet light by the irradiation lamp of the present invention, thereby forming a pretilt angle of the liquid crystal, and completing the liquid crystal alignment.
  • FIG. 6 is a schematic view showing the structure of a liquid crystal alignment device 100 of the present invention.
  • the illumination light source 101 is disposed above the machine table 103, and the liquid crystal cell 102 that needs to be aligned with the liquid crystal is placed on the upper surface of the machine table 103, and the illumination source 101 is turned on.
  • the cartridge 102 is irradiated to form a pretilt angle of the liquid crystal, thereby completing the orientation of the liquid crystal.
  • the 7A is an arrangement diagram of the illumination light source 101 in the liquid crystal alignment device 100.
  • the illumination light source 101 is arranged by a plurality of illumination lamps 10 as needed.
  • the unnecessary light box 11 can be removed as needed to achieve energy saving. .
  • Fig. 7b is a schematic view of the prior art using the lamp 1011 as the illumination source 101'. Since the length of the lamp 1011 is determined, when the liquid crystal panel is changed in the longitudinal direction of the lamp 1011, the demand cannot be matched, resulting in waste of energy.

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  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

照射灯（10）、液晶配向的方法及装置（100）。照射灯（10），包括1个或多个灯箱（11,21），每个灯箱（11,21）内设置有多个发光体(112)，每个灯箱（11,21）通过多个发光体自内向外发出光线，灯箱（11,21）的发光面位于同一平面内。发光体(112)为发光二极管发出紫外光，能够直接提供液晶取向所使用的紫外光，不再需要辅助设备来滤掉不需要的光线，降低了成本，另外，紫外光不会对液晶结构产生损害，提高了液晶面板的品质。使用发光二极管，降低了能耗，避免了生产中频繁更换灯管，提高了生产率。

Description

照射灯、液晶配向的方法及装置
相关申请的交叉引用
本申请要求享有于2016年12月26日提交的名称为“照射灯、液晶配向的方法及装置”的中国专利申请CN201611217557.6的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本发明涉及液晶显示技术领域，尤其涉及一种用于液晶配向的照射灯、一种液晶配向的方法及装置。
背景技术
在液晶显示器中，液晶是以薄层的形式铺满整个画面。在这种情况下，液晶分子需要整齐有序地沿某一方向排列(称其为“取向”)。当光照射时，使光透过还是将光遮挡取决于液晶分子的取向。因此，所有的液晶分子常时沿同一方向排列是完全必要的。目前，作为主流而使用的向列液晶为棒状分子，这种棒状分子本身可以在一定角度范围之内，自然地集中于某一方向排列，但如果不加控制，这种排列往往存在一定分散度。为满足显示器的使用要求，需要液晶分子井然有序排列，但仅靠分子之间自然发生的作用力是不够的，必须人为地控制。
目前，较多采用的液晶配向技术是PS-VA(聚合物稳定型垂直配向技术，Polymer Stabilized Vertical Alignment)，在PS-VA的盒制程中，液晶里包含有反应型单体，所以他有一个液晶配向的环节，通过对基板照射UV光的方式使液晶中反应型单体发生反应，从而使液晶形成预倾角，这一制程称为紫外光配向。
在紫外光配向制程中，需要紫外光光源，现有技术中所采用的紫外光光源的主要发光体为金属卤素灯或荧光灯，这些发光体的发光效率低、寿命低，一般只有几千小时的寿命，而且这些发光体容易碎裂且包含有有害物质(如汞)，并其发出的光的波长范围较广，包括许多无用甚至对生产有害的波长的光，如图1所示为现有技术中发光体发出光线的波长，从图中可以看出这些光的波长范围较 广，然而实际的紫外光配向技术中只需要一小段波长的有效光，过短波长的光，如图1中框2中所示，会引起反应型单体的爆聚以及损害液晶结构，过长波长的光，如图中框3中所示，会引起发热，所以现有技术中需要使用其他辅助设备把不需要的光滤掉，并且还需要增加冷却设备对发光体进行冷却，从而增加了不必要的成本。
进一步，现有技术中的发光体通常设置成灯管形状，并且需要很高的电压来激发发光，耗能较高，而且当机台很大时，为了匹配机台尺寸，灯管需要做很长，长灯管的驱动电压更高，进一步增加了耗能，并且长灯管的照度均齐性也不高。
发明内容
为了解决现有技术中液晶配向光源效率低、成本高、耗能高的问题，本发明提出了一种照射灯，同时提出了一种液晶取向的方法和装置。
本发明提出的照射灯，包括1个或多个灯箱，每个所述灯箱内设置有多个发光体，每个所述灯箱通过所述多个发光体自内向外发出光线，所述灯箱的发光面位于同一平面内。
这种照射灯由于由灯箱排列构成，所以在液晶取向制程中，可以根据液晶盒尺寸的大小选择所使用的灯箱的数量，从而降低能耗和成本。
作为对本发明的进一步改进，所述光线为紫外光。这种发出紫外光的照射灯，在液晶取向制程中，能够直接提供液晶取向所使用的紫外光，不再需要辅助设备来滤掉不需要的光线，进一步降低了成本，此外，由于紫外光不会对液晶结构产生损害，这样就提高了液晶面板的品质。
作为对本发明的进一步改进，所述发光体为发光二极管(LED)。发光二极管的波长范围较集中，通过半导体材料的选择及材料掺杂方式的改变，可以直接得到液晶配向所需要的紫外光，同时LED光源不含有汞等有害物质，且其发光效率较高、耗能少，而且寿命可达几万至十几万小时，这样就避免了生产中频繁更换灯箱的操作，大大降低了操作成本，提高了生产率，同时由于LED尺寸较小，可以以所需要的方式设置在灯箱内，进一步提高了生产的灵活性。
尤其当紫外光波长位于280纳米至400纳米范围内时，可以充分地实现液晶配向，而且由于不再含有其他范围波长的光线，就不会损害液晶结构，也不会引起发热，不仅提高了产品品质，而且也不再需要辅助设备进行冷却处理，进一步 降低了生产成本。
当通过调节所述发光二极管两端的电压调节所述发光二极管的照光强度时，可以根据制程的需要控制照射灯的照光强度，使之与制程相匹配，进一步降低了能耗，提高了产品品质。
作为对照射灯的进一步改进，所述灯箱的发光面形状呈圆形或多边形。这样的形状方便生产制造。当多个所述灯箱呈矩阵式排列时，可以适用常见的方形液晶面板的需要，根据液晶面板的尺寸设置灯箱的行数和列数；当多个所述灯箱呈同心圆的方式排列时，可以适用圆形液晶面板的需要，根据液晶面板的直径设置同心圆的数目和间隔，这样就避免了布置多余的灯箱，达到了节能的目的。
本发明同时提出了一种液晶取向的方法，其特征在于，使用本发明提出的照射灯对基板进行照射，使液晶形成预倾角，从而完成液晶配向。
本发明同时提出了一种装置，其特征在于，包括本发明提出的照射灯，所述装置自下而上依次设置有机台、照射灯，将液晶盒放置在所述机台上，所述照射灯发出的光线对液晶盒进行照射，完成液晶取向。
总之，本发明提出的照射灯，在液晶取向制程中，能够直接提供液晶取向所使用的紫外光，不再需要辅助设备来滤掉不需要的光线，进一步降低了成本，此外，由于紫外光不会对液晶结构产生损害，这样就提高了液晶面板的品质。当使用发光二极管发出紫外光时，进一步降低了能耗，避免了生产中频繁更换灯管的操作，提高了生产率。
附图说明
在下文中将基于实施例并参考附图来对本发明进行更详细的描述。其中：
图1为现有技术中发光体发出光线的波长范围示意图；
图2为灯箱呈矩阵式排列的照射灯出光面示意图；
图3为灯箱呈同心圆方式排列的照射灯出光面示意图；
图4为灯箱内部结构示意图；
图5为本发明照射灯的光线波长范围示意图；
图6为液晶取向装置的结构示意图；
图7a为本发明照射灯组成的照射光源的结构示意图；
图7b为现有技术灯管组成的照射光源的结构示意图。
在附图中，相同的部件使用相同的附图标记。附图并未按照实际的比例。
具体实施方式
下面将结合实施例对本发明的内容作出进一步的说明，下文中的上、下、左、右均是相对于图片中位置，不应理解为对本发明的限制。
实施例一：
图2所示为本发明提出的照射灯10的出光面的示意图，照射灯10的灯体12呈四边形，灯体12内含有多个灯箱11，每个灯箱11内均设置有多个发光体，灯箱11通过内部的多个发光体自内向外发出光线，每个灯箱11的发光面均位于同一平面内。灯箱11的发光面形状呈四边形，当然灯箱11的发光面形状也可以呈圆形或其他形状，可以根据实际需要设置灯箱11的发光面形状。
在本实施例中，多个灯箱11呈矩阵式排列，如图2所示，图2中灯箱11呈三行九列排列，具体的行数和列数可以根据实际液晶面板的尺寸确定，这样就能避免多余的灯箱存在，降低了能耗和成本。
实施例二：
图3所示为本发明提出的照射灯20的出光面的示意图，照射灯20的灯体22呈圆形，灯体22中含有多个灯箱21，每个灯箱21内均设置有多个发光体，灯箱21通过内部的多个发光体自内向外发出光线，每个灯箱21的发光面均位于同一平面内。灯箱21的发光面形状呈圆形，当然灯箱21的发光面形状也可以呈其他形状，可以根据实际需要设置灯箱21的发光面形状。
在本实施例中，多个灯箱21以与灯体22的外圆周同心的圆形的方式排列，如图3所示，图3中灯箱21呈三层同心圆排列，这种排列方式特别适用于圆形液晶面板，具体的同心圆数目和每个同心圆上的灯箱数量可以根据实际液晶面板的尺寸确定，这样就能避免多余的灯箱存在，降低了能耗和成本。
图4为灯箱11的内部结构示意图，可以看出，灯箱11中布置有多个发光体112，发光体112在一定电压的作用下发出紫外光，这个紫外光可以满足液晶配向的需求，由于不再有其他波长的光线存在，也就不再需要辅助设备进行滤光，进一步降低了生产成本。发光体112优选为发光二极管，发光二极管的低能耗、小尺寸特性使得灯箱11的结构设置更加灵活，降低了耗能，而且发光二极管的波长范围较集中，通过半导体材料的选择及材料掺杂方式的改变，可以直接得到 液晶配向所需要的紫外光，同时LED光源不含有汞等有害物质，且其发光效率较高、耗能少，而且寿命可达几万至十几万小时，这样就避免了生产中频繁更换灯箱的操作，大大降低了操作成本。尤其当将发光体112发出的光线波长控制在280纳米至400纳米范围内时，如图5所示为本发明的照射灯发出的光线的波长范围示意图，通过对比图5和图1，可以看出本发明的照射灯发出的光线不再含有其他范围波长的光线，就不会损害液晶结构，也不会引起发热，再次降低了生产成本，提高了产品品质。
同样，灯箱21的内部也可以根据需要设置多个发光体，发光体优选为发光二极管。
发光二极管的照光强度可以通过调节其两端的电压进行调节，进而实现照射灯的照光强度的调节，以满足液晶配向过程中不同阶段的需要。
在液晶盒的制程中，在液晶取向过程中，采用本发明的照射灯对基板照射紫外光，从而使液晶形成预倾角，完成液晶取向。
图6为本发明的液晶取向装置100的结构示意图，照射光源101设置在机台103的上方，将需要进行液晶取向的液晶盒102放置在机台103的上平面上，开启照射光源101对液晶盒102进行照射，使液晶形成预倾角，从而完成液晶的取向。
图7a为液晶取向装置100中的照射光源101的排列图，照射光源101由多个照射灯10按照需要排列，当液晶盒尺寸改变时，可以根据需要拆卸下多余的灯箱11，达到节能的目的。
图7b为现有技术使用灯管1011作为照射光源101’的示意图，由于灯管1011的长度确定，所以当液晶面板在灯管1011的长度方向改变时，就无法匹配需求，造成能耗浪费。
最后说明的是，以上实施例仅用于说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的宗旨和范围，其均应涵盖在本发明的权利要求范围当中。

Claims (17)

  1. 一种照射灯，其中，包括1个或多个灯箱，每个所述灯箱内设置有多个发光体，每个所述灯箱通过所述多个发光体自内向外发出光线，
    所述灯箱的发光面位于同一平面内。
  2. 根据权利要求1所述的照射灯，其中，所述光线为紫外光。
  3. 根据权利要求2所述的照射灯，其中，所述发光体为发光二极管。
  4. 根据权利要求2所述的照射灯，其中，所述紫外光波长位于280纳米至400纳米范围内。
  5. 根据权利要求3所述的照射灯，其中，所述紫外光波长位于280纳米至400纳米范围内。
  6. 根据权利要求5所述的照射灯，其中，通过调节所述发光二极管两端的电压调节所述发光二极管的照光强度。
  7. 根据权利要求1所述的照射灯，其中，所述灯箱的发光面形状呈圆形或多边形。
  8. 根据权利要求7所述的照射灯，其中，多个所述灯箱呈矩阵式排列。
  9. 根据权利要求7所述的照射灯，其中，多个所述灯箱在呈同心圆的方式排列。
  10. 一种液晶取向的方法，所述方法使用照射灯对基板进行照射，使液晶形成预倾角，其中，
    所述照射灯包括1个或多个灯箱，每个所述灯箱内设置有多个发光体，每个所述灯箱通过所述多个发光体自内向外发出光线，
    所述灯箱的发光面位于同一平面内，
    所述光线为紫外光。
  11. 一种装置，所述装置自下而上依次设置有机台、照射灯，将液晶盒放置在所述机台上，所述照射灯发出的光线对液晶盒进行照射，完成液晶取向，其中，
    所述照射灯包括1个或多个灯箱，每个所述灯箱内设置有多个发光体，每个所述灯箱通过所述多个发光体自内向外发出光线，
    所述灯箱的发光面位于同一平面内，
    所述光线为紫外光。
  12. 根据权利要求11所述的装置，其中，所述发光体为发光二极管。
  13. 根据权利要求12所述的装置，其中，所述紫外光波长位于280纳米至400纳米范围内。
  14. 根据权利要求5所述的装置，其中，通过调节所述发光二极管两端的电压调节所述发光二极管的照光强度。
  15. 根据权利要求11所述的装置，其中，所述灯箱的发光面形状呈圆形或多边形。
  16. 根据权利要求15所述的装置，其中，多个所述灯箱呈矩阵式排列。
  17. 根据权利要求15所述的照射灯，其中，多个所述灯箱呈同心圆的方式排列。
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