CN100334490C - Luminous source structure for flat display - Google Patents

Luminous source structure for flat display Download PDF

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CN100334490C
CN100334490C CN 03143064 CN03143064A CN100334490C CN 100334490 C CN100334490 C CN 100334490C CN 03143064 CN03143064 CN 03143064 CN 03143064 A CN03143064 A CN 03143064A CN 100334490 C CN100334490 C CN 100334490C
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luminous
source
structure
flat
display
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CN 03143064
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CN1567056A (en )
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麦哲魁
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统宝光电股份有限公司
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Abstract

本发明为一种平面显示器的光源结构,其至少包括:一背光模块,其具有一发光光源,用以产生一第一颜色光;以及一偏光板,其包括至少一荧光层,该荧光层受第一颜色光的激发,以产生白光或具有第二颜色的混合光。 The present invention is a light source structure of a flat panel display, comprising at least: a backlight module having a light source for generating a first color light; and a polarizing plate, comprising at least one phosphor layer, the phosphor layer by excitation first color light to produce white light or mixed light having a second color.

Description

平面显示器的光源结构 The light source structure of the flat panel display

技术领域 FIELD

本发明涉及一种光源结构,特别是涉及一种适用于平面显示器的光源结构。 The present invention relates to a light structure, particularly to a structure suitable for a light source of a flat panel display.

背景技术 Background technique

随着信息时代的来临,平面显示器已成为各式电气设备的必要配备,例如广泛地使用于笔记型计算机、移动电话、信息家电(IA)及个人数字助理(PDA)等。 With the advent of the information age, various types of flat panel display has become necessary with electrical equipment, for example, widely used in notebook computers, mobile phones, home information appliances (IA) and a personal digital assistant (PDA) and the like. 轻、薄、省电是显示器的基本要求,但受限于视角、应答速度、亮度、画质等问题,相关技术已投入相当大的研发成本。 Light, thin, low power display is a basic requirement, but limited by the angle of view, response speed, brightness, image quality and other problems, the related art has invested considerable research and development costs. 在新一代的平面显示器技术中,液晶显示器由于具有亮度佳、画质清析、广视角、高应答速度、低耗电等特性,故深具发展潜力。 In the next generation of flat panel display technology, since a liquid crystal display having good brightness, image quality analysis clear, wide viewing angle, high response speed, low power consumption and other characteristics, the development of great potential.

请参阅图1,其为传统穿透式液晶显示器的结构示意图。 Please refer to FIG. 1, which is a schematic structural diagram of a conventional transmissive liquid crystal display. 如图1所示,由于液晶分子本身不会发光,因此必须在液晶显示面板后方加上一组背光模块10,以提供所需的光线。 1, the liquid crystal molecules themselves do not emit light, it must be displayed on the back panel with a group of the backlight module 10, to provide the desired light in the liquid crystal. 背光模块10内部或两侧通常设置有发光光源101,例如灯管或发光二极管等,发光光源101所输出的白色光线11经背光模块10内的导光板、反射片与扩散片等作用,可将光线11均匀地由背光模块10表面输出且穿透下偏光板12(Polarizer)、玻璃基板13(GlassSubstrate)、液晶14(Liquid Crystal)、彩色滤光片15(Color Filter)、上偏光板16(Polarizer)等相关材料,以进入人的眼睛而形成影像。 The backlight module 10 is generally provided inside or both sides with a light source 101, such as a light guide plate, the reflective sheet and the diffusion sheet 10 and the like inside the lamp or a light emitting diode, the light source 101 emitting white light output by the backlight module 11, may be 11 from the light output surface 10 uniformly and the backlight module penetrate the polarizer 12 (polarizer), a glass substrate 13 (GlassSubstrate), the liquid crystal 14 (liquid crystal), a color filter 15 (color filter), the upper polarizer 16 ( Polarizer) and other related materials to enter the human eye to form an image. 换言之,液晶显示器需先利用背光模块10投射出的白色光线11,使其经过下偏光板12,再经由玻璃基板13穿透至液晶14,此时液晶显示器可利用导电玻璃(ITO)17间电压的变化来改变液晶分子的排列状态,进而使射入的光线产生角度偏转的现象。 In other words, the liquid crystal display using a backlight module 10 must first projected white light 11, it passes the lower polarizer 12, and then penetrate through the glass substrate 14 to the liquid crystal 13, the liquid crystal display at this time may be a conductive glass (ITO) 17 the voltage between the the change in alignment of liquid crystal molecules changes, and thus the phenomenon that the light incident angle of deflection. 这些光线接着还须经过前方的彩色滤光片15与上偏光板16。 These rays must then passes in front of the color filter 15 and the polarizer 16. 由于上偏光板16和下偏光板12间可极化的光线角度相差90度,原本会将所有的光线阻隔下来,但因为液晶14可以通过电压的变化使射入的光线产生偏转,因此只要改变液晶14间的电压值就可以控制最后输出的光线18强度与色彩,进而能在液晶显示器上出现不同深浅的颜色组合。 Since the upper polarizing plate 16 and the lower polarizing plate 12 can be light polarization angle of 90 degrees, all of the light that would otherwise barrier down, but since the liquid crystal 14 allows incident light rays by deflecting a change in voltage, so long as the change the voltage value of the liquid crystal 14 can control the final output of the light intensity and color 18, further combinations of different shades of color to appear on the LCD.

背光模块10与偏光板16,12为液晶显示器中相当重要的组件,以下分别就这些组件目前的技术背景作一简单说明:请参阅图2,其为传统偏光板的结构示意图。 The backlight module 10 and the polarizing plate 16, 12 is important in the liquid crystal display component, hereinafter a brief description of these components to current technical background: Refer to FIG. 2, a schematic structure of a conventional polarizing plate, which is. 如图2所示,传统的偏光板(polarizer)由表面保护层21(surface protective layer)、保护层22(protectivelayer)、偏光子层23(polarizing layer)、保护层24(protective layer)、黏着层25(adhesive layer)与离型层26(release film)所组成。 , The conventional polarizer (Polarizer) of 21 (surface protective layer) surface protective layer, the protective layer 22 (protectivelayer), polarizing sublayer in FIG. 2 23 (polarizing layer), a protective layer 24 (protective layer), adhesive layer 25 (adhesive layer) composed of the release layer 26 (release film). 其中偏光子层23所使用的材料为聚乙烯醇(polyvinyl alcohol,PVA),其延伸特性具有偏光的作用,因此普遍被当为偏光基质。 Wherein the material of layer 23 is a polarizer used is a polyvinyl alcohol (polyvinyl alcohol, PVA), which has the effect of extending the polarization characteristics, and is thus generally as a polarization matrix. 由于聚乙烯醇(PVA)在经过延伸之后,通常机械性质会降低且变得容易碎裂,因此当聚乙烯醇延展成膜后,两侧通常会镀上一层保护层22,24,例如三醋酸纤维层(triacetyl-cellulose,TAC),一方面可以保护,另一方面则可以防止聚乙烯醇(PVA)膜的回缩。 Since polyvinyl alcohol (PVA) After the extension, and usually reduces the mechanical properties can be easily broken, thus forming stretched after a polyvinyl alcohol, usually coated on both sides with a protective layer 22, such as tris acetate fiber layer (triacetyl-cellulose, TAC), to protect the one hand, on the other hand can be prevented polyvinylalcohol (PVA) film retracted. 另外,在保护层22,24的外层还可加上一层表面保护膜21及离型膜26,以做为偏光板保存及运送保护之用。 Further, in the outer protective layers 22, 24 may also be coupled with a surface protecting film 21 and the release film 26 to serve as the polarizing plate protective storage and transport purposes.

一般光源的光线为多方向性(非极化),偏光板在液晶显示器内扮演的角色如同光线的过滤器,可以过滤掉非特定方向的光,只留下特定方向的光(即将非极化光变成极化光)。 The light source is typically a multi-directional (non-polarized), the polarizing plate in the liquid crystal display to play the role of light as a filter, to filter out non-specific direction of the light, leaving only a specific direction of the light (non-polarized coming light into polarized light). 在液晶显示器内通常会配置上下两偏光板,上下两偏光板可极化的光线互成90度,故通过第一片偏光板的光,恰不能通过另一片偏光板,但若在两片偏光板中间加上经旋转方向配置的液晶,就可引导光极化方向转变90度,而极化光就可以通过第二片偏光板,但若通过电压让液晶方向与通过第一片偏光板的极化光方向一致,极化光就无法通过第二片偏光板。 In the liquid crystal display is typically configured upper and lower polarizing plates, the upper and lower polarizing plates can be cross-polarized light 90 degrees, so the light passing through the first sheet polarizer, can not just another piece of the polarizing plate, but if the two polarized together with the intermediate plate disposed over the rotational direction of the liquid crystal, the polarization direction of the light guide can shift 90 degrees, while the light is polarized by the second polarizing plate, but if the voltage of the liquid crystal so that the direction of the first sheet polarizer consistent direction of polarization of light, polarized light can not pass the second polarizing plates. 依此原理,通过电压调控液晶旋转的方向,就可以改变面板上光线明暗的变化。 So principle, the direction of rotation of the liquid crystal voltage regulation, can change the brightness of the light on the display panel changes.

背光模块10的主要组件包括发光光源、导光板(Light Guide)、反射片(reflection sheet)、扩散片(Diffusion Sheet)与增光片(Brightness Enhancementsheet)等。 The main components of the backlight module 10 comprises a light source, a light guide plate (Light Guide), a reflective sheet (reflection sheet), a diffusion sheet (Diffusion Sheet) with a brightness enhancement sheet (Brightness Enhancementsheet) and the like. 背光模块10的发光光源可以是灯管或发光二极管等,然而为配合液晶显示器轻薄化的趋势,生产薄化、重量轻的背光模块也为目前研究的主要方向。 The backlight light source module 10 may be a lamp or a light emitting diode, a liquid crystal display but with the light of the trend, producing a thin, light weight of the backlight module is also the main direction of the current study. 以发光二极管(LED)为发光光源由于具有亮度高、寿命长、可靠度好、成本低等多种优点,特别是近几年来,随着技术的发展,发光二极管(LED)已覆盖了红、橙、黄、黄绿、绿、蓝、白色等多种颜色,可作为中小型液晶显示器理想的发光光源,因而逐渐成为市场的主流。 Light emitting diode (LED) as a light source has many advantages since the high brightness, long life, good reliability, low cost, especially in recent years, with the development of technology, a light emitting diode (LED) has covered red, orange, yellow, green, green, blue, white and other colors, preferably light source may be sized as a liquid crystal display, which gradually become mainstream.

请参阅图3a与图3b,其显示两种使用发光二极管为发光光源的背光模块结构示意图。 See Figures 3a and 3b, the light emitting diode which shows two light source is a schematic structure of a backlight module. 如图3a与图3b所示,发光二极管31设置于导光板32的侧边,通过导光板32、反射片33、扩散片34或增光片35作用,发光二极管31所射出的光线可均匀地从背光模块表面射出。 As shown in FIG. 3a and 3b, the light emitting diode 31 is provided at the side of the light guide plate 32 through the light guide plate 32, reflection sheet 33, a diffusion sheet or prism sheet 34 35 action, the light emitting diode 31 may be uniformly emitted from the light emitting surface of the backlight module. 然而,在中小尺寸的薄膜晶体管液晶显示器中,大都运用产生白色光的发光二极管当作发光光源。 However, the small size of thin film transistor liquid crystal displays, most of the use of light emitting diodes as a white light source. 而目前产生白色光的发光二极管主要做法是将发光芯片放置于电极支架凹槽中,并在发光芯片上涂上一层或多层荧光粉,以通过混光的方式达到产生白光的目的,例如:产生红色光的发光芯片,配合蓝与绿荧光粉层,则可发出白色光源;另外,产生蓝色光的发光芯片,配合黄色荧光粉层,则可发出白色光源。 The current practice of the main light-emitting diode is a white light emitting chip is placed in the electrode holder groove and one or more layers of phosphor coated on the light emitting chips, for the purpose of generating white light by means of mixing, e.g. : light-emitting chip generating red light, with the blue and green phosphor layer, emits white light source may be; Further, the light-emitting chip generating blue light, with the yellow phosphor layer may emit white light. 在考虑发光效率、寿命等等条件下,目前只能使用NICHIA公司所制的白色发光二极管,然而产生白色光的发光二极管无论在寿命与价格上都比产生红色光、绿色光和黄色光的发光二极管等差,如此将缩短液晶显示器的使用寿命,并增加生产成本。 In consideration of luminous efficiency, lifetime and the like conditions, is currently available NICHIA Corporation manufactured by white light emitting diode, however, light emitting diodes produce white light regardless than red light, green light, yellow light emission in life and price arithmetic diode, thus shortening the life of the liquid crystal display, and increase the production cost.

因此,如何发展一种可避免上述缺点的光源结构,实为目前迫切需要解决的问题。 Therefore, how to develop a light source structure can avoid the disadvantages mentioned above, in fact, there is an urgent need to address the problem.

发明内容 SUMMARY

本发明的主要目的在于提供一种改进的平面显示器光源结构,以取代传统背光模块提供白色光的方式,由此可增加平面显示器的使用寿命与降低成本。 The main object of the present invention to provide an improved light source structure of a flat panel display, a backlight module to replace the traditional way of providing white light, thereby increase service life and reduce the cost of flat panel displays.

本发明的另一目的在于提供一种平面显示器的光源结构,其可利用非白光的发光二极管作为背光模块的发光光源,并利用荧光粉层的混光作用,以达到产生白光或其它特殊颜色混合光的目的。 Another object of the present invention is to provide a light source structure of a flat display, which may utilize a non-white light emitting diode as a light source of the backlight module, the light mixing effect using phosphor layer to produce white light or to achieve other special color mixing the purpose of light.

为达上述目的,本发明提供一种平面显示器的光源结构,其至少包括:一背光模块,其具有一发光光源,用以产生一第一颜色光;以及一偏光板,其包括至少一荧光层,该荧光层受第一颜色光的激发所产生的光,经与该第一颜色光混光后,以产生白光或具有第二颜色的混合光。 To achieve the above object, the present invention provide a light source structure of a flat panel display, comprising at least: a backlight module having a light source for generating a first color light; and a polarizing plate, comprising at least one phosphor layer the phosphor layer excited by light of the first color light produced by mixing the light of the first color light to produce white light or mixed light having a second color.

根据本发明的构想,偏光板为平面显示器的上偏光板或下偏光板,且荧光层设置于上偏光板或下偏光板的偏光子层与表面保护层之间。 The concept of the present invention, the polarizing plate is the polarizing plate or lower polarizing plate is a flat panel display, and a phosphor layer disposed between the upper polarizing plate or lower polarizing plate is a polarizer layer and the surface protective layer. 另外,偏光板还可包括一保护层,用以保护荧光层。 Further, the polarizing plate may further include a protective layer to protect the phosphor layer. 而背光模块的发光光源以发光二极管(LED)为佳,且平面显示器以低温多晶硅薄膜晶体管液晶显示器为较佳。 While the light source to the light emitting diode backlight module (LED) preferably, a flat panel display and a low-temperature polysilicon thin film transistor liquid crystal display is preferred.

在一较佳实施例中,当第一颜色光为红色光时,偏光板可包括一蓝色荧光层及一绿色荧光层,这些荧光层受到红色光激发后,经由混光作用可产生白光或具第二颜色的混合光。 In a preferred embodiment, when the first color light is red light, the polarizing plate may comprise a blue phosphor layer, and a green phosphor layer, the phosphor layer after being excited red light, white light may be generated by the action of light or mixing the mixed light having a second color. 当第一颜色光为绿色光时,偏光板可包括一红色荧光层及一蓝色荧光层,这些荧光层受绿色光的激发后,经混光作用可产生白光或具有第二颜色的混合光。 When the first color light is green light, the polarizing plate may include a red phosphor layer and a blue phosphor layer, the phosphor layer excited by the green light by mixing the light effect may produce white light or mixed light having a second color . 当第一颜色光为蓝色光时,偏光板可包括一黄色荧光层,此黄色荧光层受蓝色光激发后,经混光作用可产生白光或具第二颜色的混合光。 When the first color is blue light, the polarizing plate may include a yellow phosphor layer, this layer was the yellow phosphor excited by the blue light by mixing the light effect can produce white light or mixed light having a second color.

为达上述目的,本发明另提供一种偏光板结构,其设置于一平面显示器的一背光模块上方,其特点在于:偏光板结构包括至少一荧光层,该荧光层受背光模块所提供的第一颜色光激发所产生的光,经与该第一颜色光混光后,且经混光作用后,可产生白光或具第二颜色的混合光。 To achieve the above object, the present invention further provides a polarizing plate structure disposed above a backlight module in a flat display, characterized by: a polarizer structure comprising at least a fluorescent layer, the backlight module provided by the phosphor layer a color of light produced by the excitation light, light after light mixing with the first color, and after light mixing effect, mixing may produce white light or light having a second color.

根据本发明的构想,其中偏光板结构还包括一黏着层、多个保护层、一偏光子层与一表面保护层。 The concept of the invention, wherein the polarizing plate further comprises an adhesive layer structure, a plurality of the protective layer, a bias layer and a photonic surface protective layer.

附图说明 BRIEF DESCRIPTION

图1为穿透式液晶显示器的结构示意图;图2为传统偏光板的结构示意图;图3a为使用发光二极管为发光源的传统背光模块结构示意图;图3b为使用发光二极管为发光源的另一传统背光模块结构示意图;图4为本发明第一较佳实施例的平面显示器的光源结构示意图;图5为本发明第二较佳实施例的平面显示器的光源结构示意图;图6为本发明第三较佳实施例的平面显示器的光源结构示意图。 1 is a schematic structure of a transmissive liquid crystal display device; FIG. 2 is a schematic structure of a conventional polarizing plate;. 3A is a schematic view of a conventional light emitting diode as light source structure of backlight module of Figure 1; Figure 3b is a light emitting diode is made to another source a schematic view of a conventional backlight module structure; FIG. 4 is a schematic structure of a light source of a flat panel display of a first preferred embodiment of the present invention; source schematic structure of a second preferred embodiment of a flat panel display of the embodiment of the present invention. FIG. 5; FIG. 6 of the present invention. source schematic structure of the flat display according to three preferred embodiments.

具体实施方式 detailed description

请参阅图4,其为本案第一较佳实施例的平面显示器光源结构示意图。 Please refer to FIG. 4, which is a schematic view of the structure of the light source is a flat panel display case of the first preferred embodiment. 如图4所示,本发明的平面显示器光源结构包括一背光模块40以及一偏光板41,其中背光模块40除发光光源401为产生非白色光的发光二极管外,其余组件例如导光板、反射片、扩散片、增光片以及菱镜片等组件都与现有技术相同,在此不再赘述。 As shown, a light source structure of the present invention a flat panel display includes a backlight module 40, and a polarizer 414, wherein the backlight module 40 in addition to light source 401 to generate non-emitting diode white light, the remaining components such as a light guide plate, a reflective sheet , diffusion sheet, brightness enhancement sheet, and a prism assembly and the like are the same as the prior art, it is not repeated here. 另外,偏光板41除包括一层或多层荧光层外,其于材料层例如表面保护层411、保护层412、偏光子层413、保护层414以及黏着层415等都与现有技术相同,在此也不再赘述。 Further, in addition to the polarizing plate 41 includes one or more phosphor layers, the layer of material, for example, in which the surface protective layer 411, protective layer 412, a polarizer layer 413, protective layer 414 and adhesive layer 415 are all the same as the prior art, this will not repeat them.

在此实施例中,背光模块40使用产生红色光的发光二极管401作为发光光源,根据国际照明委员会于1931年所导入的色度图(CIE 1931CHROMATICITY DIAGRAM),红色光、绿色光与蓝色光混色可产生平面显示器所需的白光,因此偏光板41除表面表护层411、保护层412、偏光子层413、保护层414与黏着层415外,可增加一绿色荧光层421与一蓝色荧光层422,以作为混光作用的组件。 Embodiment, the backlight module 40 generates red light emitting diode as light source 401 in this embodiment, in accordance with chromaticity diagram (CIE 1931CHROMATICITY DIAGRAM) International Commission on Illumination in 1931, the year of introduction, red light, green light and blue light may be mixing the flat panel display required to produce white light, the polarizing plate 41 and therefore the table except that the surface protective layer 411, protective layer 412, a polarizer layer 413, protective layer 414 and the adhesive layer 415, the layer 421 may increase a green phosphor layer and a blue phosphor 422, as a component of the light mixing effect. 当然,为保护绿色荧光层421与蓝色荧光层422,也可在蓝色荧光层422上增加一保护层423。 Of course, to protect the phosphor layer 421 and the blue green fluorescent layer 422, may increase a protective layer 423 on a blue phosphor layer 422.

此实施例的主要混色过程如下:首先,发光二极管401所产生的红色光42经由导光板、反射片、扩散片与菱镜片等作用,可均匀地由背光模块40的表面射出。 The main mixing procedure of this embodiment is as follows: First, the red LED light 401 generated by the light guide plate 42, reflection sheet, diffusion sheet and a prism, etc., can be uniformly emitted from the surface of the backlight module 40. 然后,红色光42透过偏光板41的表面保护层411及保护层412后,进入绿色荧光层421与蓝色荧光层422并激发各层的荧光粉,使其发生混光作用而产生白光43。 Then, the red light 42 passes through the polarizing plate 411 of the surface protective layer 41 and a protective layer 412, 421 and into the green phosphor layer and the blue phosphor layer 422 is excited phosphor layers, so that light mixing takes place to produce white light 43 . 接着,白光43透过保护层423进入偏光子层413以进行偏光作用。 Next, white light enters the polarizer 43 423 sub-layer 413 through the protective layer for a polarizing function. 最后,经偏光或极化后之白光44,透过保护层414与黏着层415输出,以供平面显示器使用。 Finally, the 44, or white light output by the polarization after the polarization through the protective layer 414 and the adhesive layer 415, for flat panel display use.

请参阅图5,其为本案第二较佳实施例的平面显示器光源结构示意图。 Refer to FIG. 5, a schematic diagram of a flat panel display which case the light source configuration of the second preferred embodiment. 于此实施例中,背光模块40使用产生绿色光的发光二极管401作为发光光源,根据国际照明委员会于1931年所导入的色度图(CIE 1931CHROMATICITY DIAGRAM),绿色光、红色光与蓝色光混色后可产生平面显示器所需之白光,因此偏光板41除表面表护层411、保护层412、偏光子层413、保护层414与黏着层415外,可增加一红色荧光层424与一蓝色荧光层425,以作为混光作用的组件。 After this embodiment, the backlight module 40 generates green light emitting diode as light source 401, according to the chromaticity diagram (CIE 1931CHROMATICITY DIAGRAM) International Commission on Illumination in 1931, the year of introduction, green light, red light and blue light mixing It can produce white light of the desired flat-panel display, so the polarizing plate 41 except that the surface protective sheet layer 411, protective layer 412, a polarizer layer 413, protective layer 414 and the adhesive layer 415, the phosphor layer 424 can be increased and a red a blue fluorescent layer 425 to function as the light mixing assembly. 当然,为保护红色荧光层424与蓝色荧光层425也可在蓝色荧光层425上增加一保护层423。 Of course, to protect the red fluorescent layer 425 may add a protective layer 423 on a blue phosphor layer 424 and the blue phosphor layer 425.

此实施例的主要混色过程如下:首先,发光二极管401所产生的绿色光42经由导光板、反射片、扩散片与菱镜片等作用,可均匀地由背光模块40的表面射出。 The main mixing procedure of this embodiment is as follows: First, a green light emitting diode 42 via the light guide plate, a reflective sheet, a diffusion sheet and a prism 401 and so on is generated, can be uniformly emitted from the surface of the backlight module 40. 然后,绿色光42透过偏光板41的表面保护层411及保护层412后,进入红色荧光层424与蓝色荧光层425并激发各层的荧光粉,使其发生混光作用而产生白光43。 Then, the green light 42 passes through the polarizing plate 411 of the surface protective layer 41 and a protective layer 412, 424 into the red phosphor layer and the blue phosphor layer 425 excite phosphor layers, so that light mixing takes place to produce white light 43 . 接着,白光43透过保护层423进入偏光子层413进行偏光作用。 Next, white light enters the polarizer 43 423 sublayer through the protective layer 413 for polarization effect. 最后,经偏光或极化后的白光44会透过保护层414与黏着层415输出,以供平面显示器使用。 Finally, the white light is output through the polarizer or polarization 44 through the protective layer 414 and the adhesive layer 415, for flat panel display use.

请参阅图6,其为本案第三较佳实施例的平面显示器光源结构示意图。 Refer to FIG. 6, which is a schematic view of the structure of the light source is a flat panel display case of the third preferred embodiment. 在此实施例中,背光模块40使用产生蓝色光42的发光二极管401作为发光光源,国际照明委员会于1931年所导入的色度图(CIE 1931CHROMATICITY DIAGRAM),蓝色光与黄色光混色可产生平面显示器所需的白光,因此偏光板41除表面表护层411、保护层412、偏光子层413、保护层414与黏着层415外,可增加一黄色荧光层426,以作为混光作用的组件。 Embodiment, the backlight module 40 using the generated blue light emitting diode light 42 in this embodiment as a light source 401, in 1931 the International Commission on Illumination chromaticity FIG year of introduction (CIE 1931CHROMATICITY DIAGRAM), color mixture of blue and yellow light may generate a display plane white desired, the polarizing plate 41 and therefore the surface protective layer 411 in addition to the table, the protective layer 412, a polarizer layer 413, protective layer 414 and an outer adhesive layer 415, a yellow phosphor layer 426 can be increased, as a component of the light mixing effect. 当然,为保护黄色荧光层426也可在黄色保护层426上增加一保护层423。 Of course, in order to protect the yellow phosphor layer 426 may increase a protective layer 423 on the protective layer 426 yellow.

此实施例的主要混色过程如下:首先,发光二极管401所产生的蓝色光42经由导光板、反射片、扩散片与菱镜片等作用,可均匀地由背光模块40的表面射出。 The main mixing procedure of this embodiment is as follows: First, the generated blue light emitting diode 42 via the light guide plate 401, a reflective sheet, a diffusion sheet and a prism and so on, can be uniformly emitted from the surface of the backlight module 40. 然后,蓝色光42透过偏光板41的表面保护层411及保护层412后,进入黄色荧光层426并激发荧光粉,使其发生混光作用而产生白光43。 Then, the blue light 42 passes through the polarizing plate 411 of the surface protective layer 41 and a protective layer 412, 426 into the yellow phosphor and excite the phosphor layer, so that light mixing takes place 43 to produce white light. 接着,白光43透过保护层423进入偏光子层413进行偏光作用。 Next, white light enters the polarizer 43 423 sublayer through the protective layer 413 for polarization effect. 最后,经偏光或极化后的白光44,透过保护层414与黏着层415输出,以供平面显示器使用。 Finally, the white light after the polarization or polarization 44, the protective layer 414 through the output 415 and the adhesive layer, used for flat panel displays.

以上所述的实施例虽以红色、蓝色及绿色发光二极管来举例说明,但是依据相同的原理及应用,对熟悉此技术人员而言,也可依发光二极管所产生的光线颜色,并参照国际照明委员会于1931年所导入的色度图(CIE1931 CHROMATICITY DIAGRAM)来决定其所需搭配的荧光层颜色,以改变偏光板的设计,并通过混光作用以产生所需的白光或特定颜色的混合光。 Although the above embodiment red, blue and green light emitting diodes to illustrate, but based on the same principles and applications, to those familiar with the art, but also to follow the color of light generated by the light emitting diode, and with reference to the international in the year of 1931 CIE chromaticity diagram introduced (CIE1931 cHROMATICITY DIAGRAM) to determine the color of the phosphor layers with desired to change the design of the polarizing plate, and by mixed light to produce the desired mixing action of a specific color or white light Light. 另外,本发明的平面显示器光源结构,可应用在各式平面显示器中,且以中小尺寸的低温多晶硅薄膜晶体管液晶显示器为佳。 Further, the planar structure of the present invention a display light source may be applied in a variety of flat panel displays, and with low temperature polysilicon thin film transistor liquid crystal display of small size is preferred. 至于偏光板40则不限于下偏光板而已,上偏光板或其它平面显示器中可运用的材料板,在此都可并入参考。 As the polarizing plate 40 is not limited to only the polarizing plate, the polarizing plate or other material that can be use in flat panel displays, may be incorporated herein by reference.

综上所述,本发明在平面显示器的偏光板中设置至少一荧光层,并利用非白色的发光二极管所产生的光源来激发荧光层,经由混色作用使其产生白光或具其它特定颜色的混合光,以供平面显示器使用。 In summary, the present invention is a polarizing plate disposed at least one flat panel display phosphor layer, and the use of non-white light emitting diodes generated by exciting phosphor layer to produce white light or other mixed colors with specific action via mixing light, flat panel displays for use. 本发明的平面显示器光源结构只需配合非白光的发光二极管就可产生平面显示器所需的白光,因此能增加平面显示器的使用寿命,并节省生产成本。 The flat panel display of the present invention is a light source structure only with non-white light emitting diode can produce desired white flat panel display, it is possible to increase the service life of the flat-panel display, and saving production costs.

以上所述仅为本发明的较佳实施例,凡依本发明权利要求所做的均等变化与修饰,都属于本发明专利的涵盖范围。 The above are only preferred embodiments of the present invention, any modifications and alterations made to the invention as claimed in claim under this, it belongs to the scope of the present invention patent.

Claims (10)

  1. 1.一种平面显示器的光源结构,其至少包括:一背光模块,其具有一发光光源,用以产生一第一颜色光;以及一偏光板,其包括至少一荧光层,该荧光层受该第一颜色光的激发所产生的光,经与该第一颜色光混光后,以产生白光或具有第二颜色的混合光。 1. A light source structure of a flat panel display, comprising at least: a backlight module having a light source for generating a first color light; and a polarizing plate, comprising at least one phosphor layer, the phosphor layer is affected by the first color light of the excitation light generated by mixing the light with the first color light to produce white light or mixed light having a second color.
  2. 2.如权利要求1所述的平面显示器的光源结构,其中该偏光板为该平面显示器的上偏光板或下偏光板。 The light source structure of the flat panel display of claim 1, wherein the polarizing plane of the display for the upper polarizing plate or lower polarizing plate.
  3. 3.如权利要求2所述的平面显示器的光源结构,其中该荧光层设置于该上偏光板或下偏光板的偏光子层与表面保护层之间。 The structure of the light source 2, a flat panel display as claimed in claim 3, wherein the phosphor layer is disposed between a polarizer layer and the surface protective layer of the upper polarizing plate or lower polarizing plate.
  4. 4.如权利要求1所述的平面显示器的光源结构,其中该偏光板还包括至少一保护层,用以保护该荧光层。 The light source structure of the flat panel display of claim 1, wherein the polarizing plate further includes at least a protective layer for protecting the phosphor layer.
  5. 5.如权利要求1所述的平面显示器的光源结构,其中该背光模块的该发光光源为一发光二极管。 The light source structure of the flat panel display of claim 1, wherein the light source of the backlight module is a light emitting diode.
  6. 6.如权利要求5所述的平面显示器的光源结构,其中该第一颜色光为红色光,且该偏光板包括一绿色荧光层及一蓝色荧光层,该各荧光层受该红色光的激发,经混光以产生该白光或具第二颜色的混合光。 The light source structure according to claim flat-panel display, wherein the first color light into red light, and the polarizing plate comprises a green phosphor layer and a blue phosphor layer, the phosphor layer of each of the red light receiving excited by light to generate the mixed white light or mixed light having a second color.
  7. 7.如权利要求5所述的平面显示器的光源结构,其中该第一颜色光为绿色光,且该偏光板包括一红色荧光层及一蓝色荧光层,该各荧光层受该绿色光的激发,经混光以产生该白光或具有第二颜色的混合光。 The light source structure according to claim flat-panel display, wherein the first color light is green light, and the polarizing plate comprises a red phosphor layer and a blue phosphor layer, the phosphor layer of each of the green light receiving excited by light to generate the mixed white light or mixed light having a second color.
  8. 8.如权利要求5所述的平面显示器的光源结构,其中该第一颜色光为蓝色光,且该偏光板包括一黄色荧光层,该黄色荧光层受该蓝色光的激发,经混光以产生该白光或具第二颜色的混合光。 The light source structure according to claim flat-panel display, wherein the first color is blue light, and the polarizing layer comprising a yellow phosphor, the yellow phosphor layer is excited by the blue light by mixing light generating the white light or mixed light having a second color.
  9. 9.如权利要求1所述的平面显示器的光源结构,其中该平面显示器为一低温多晶硅薄膜晶体管液晶显示器。 9. The light source structure of a flat display according to claim 1, wherein the flat panel display is a low-temperature polysilicon thin film transistor liquid crystal display.
  10. 10.一种偏光板结构,其设置于一平面显示器的一背光模块上方,其特征在于:该偏光板结构包括至少一荧光层,该荧光层受该背光模块所提供的第一颜色光激发所产生的光,经与该第一颜色光混光后,以产生白光或具有第二颜色的混合光。 A polarizer structure, which is disposed above a backlight module of a flat panel display, wherein: the polarizing plate structure comprises at least one phosphor layer, the phosphor layer of a first color by the backlight module provides light excitation of the light produced by mixing the light of the first color light to produce white light or mixed light having a second color.
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CN1231462A (en) * 1998-04-07 1999-10-13 陈兴 LCD and making method thereof
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US6501520B2 (en) * 1997-07-31 2002-12-31 Nec Corporation Liquid crystal display with polarization layer interior to substrates

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