CN105093685A - 一种显示设备 - Google Patents

一种显示设备 Download PDF

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Publication number
CN105093685A
CN105093685A CN201510624449.XA CN201510624449A CN105093685A CN 105093685 A CN105093685 A CN 105093685A CN 201510624449 A CN201510624449 A CN 201510624449A CN 105093685 A CN105093685 A CN 105093685A
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bandpass filter
display panels
display device
filter
backlight
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李颖祎
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Priority to CN201510624449.XA priority Critical patent/CN105093685A/zh
Publication of CN105093685A publication Critical patent/CN105093685A/zh
Priority to PCT/CN2016/077340 priority patent/WO2017049890A1/zh
Priority to US15/507,849 priority patent/US10216027B2/en
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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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
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    • G02B5/204—Filters in which spectral selection is performed by means of a conductive grid or array, e.g. frequency selective surfaces
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    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
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    • 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
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    • 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
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    • 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
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    • G—PHYSICS
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    • 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
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    • G02F1/133514—Colour filters
    • G02F1/133521—Interference filters
    • 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
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    • G02F1/1333—Constructional arrangements; Manufacturing methods
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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
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    • G02F1/1333—Constructional arrangements; Manufacturing methods
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    • G—PHYSICS
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    • 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
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    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • 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
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    • G02F1/13363—Birefringent elements, e.g. for optical compensation
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    • 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
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    • G02F1/1333—Constructional arrangements; Manufacturing methods
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    • 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
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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
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  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
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Abstract

本发明公开了一种显示设备，所述显示设备包括液晶显示面板和背光源，还包括设置于所述显示设备中与所述液晶显示面板的各像素单元对应的多个带通滤光片，所述带通滤光片用于对背光源的出射光进行窄带滤光。本发明通过采用带通滤光片，利用窄带干涉滤光方法实现对红、绿、蓝三色光的窄带滤光，从而达到提高显示设备的色域的效果，实现高色域显示。

Description

一种显示设备
技术领域
本发明涉及显示技术领域，尤其涉及一种显示设备。
背景技术
色域指的是显示设备能表达的颜色数量所构成的范围区域。自然界中可见光谱的颜色组成了最大的色域空间，该色域空间包含了人眼所能看到的所有颜色。显示技术是一种展示信息的媒介，最大程度地展示物体原始的颜色是高品质显示设备不断追求的目标，这就要求进一步提升显示产品的色域。
目前，在液晶显示技术领域，往往采用贴附量子点膜、增加量子点管、改善背光源等方式，实现高色域显示设备。但是，通过这些方式实现高色域显示设备的成本较高，实现难度较大，且色域不够高。
发明内容
本发明的目的在于提供一种显示设备，以实现高色域显示。
为解决上述技术问题，本发明提供了一种显示设备，包括液晶显示面板和背光源，还包括设置于所述显示设备中与所述液晶显示面板的像素阵列对应的多个带通滤光片，所述带通滤光片用于对所述背光源的出射光进行窄带滤光。
可选的，所述像素阵列包括多个像素单元，每个所述像素单元包括三个子像素单元；
所述多个带通滤光片为与所述各像素单元一一对应的三带通滤光片，所述三带通滤光片能够同时对红光、绿光和蓝光的中心波长和半高峰宽进行调节。
可选的，所述像素阵列包括多个像素单元，每个所述像素单元包括三个子像素单元；
所述多个带通滤光片为与所述各子像素单元一一对应的单带通滤光片；
每个单带通滤光片能够对其对应颜色的光的中心波长和半高峰宽进行调节。
可选的，所述带通滤光片设置在所述背光源与所述液晶显示面板之间；且设置在所述背光源的出光面上，或设置在所述液晶显示面板的入光面上。
可选的，所述液晶显示面板的入光面设置有第一偏光片，所述液晶显示面板的出光面设置有第二偏光片；
所述带通滤光片设置在所述背光源与所述第一偏光片之间；
或者，所述带通滤光片设置在所述第一偏光片与所述液晶显示面板之间。
可选的，所述液晶显示面板包括依次设置在所述背光源出光侧的阵列基板和彩膜基板，所阵列基板上设置有所述像素阵列，所述带通滤光片设置于所述阵列基板的入光面上。
可选的，其特征在于，所述带通滤光片设置在所述液晶显示面板的出光面上。
可选的，所述液晶显示面板的入光面设置有第一偏光片，所述显示面板的出光面设置有第二偏光片；
所述带通滤光片设置在所述液晶显示面板与所述第二偏光片之间。
可选的，所述液晶显示面板包括依次设置在所述背光源出光侧的阵列基板和彩膜基板，所述带通滤光片设置于所述彩膜基板的出光面。
可选的，其特征在于，所述液晶显示面板包括依次设置在所述背光源的出光侧的阵列基板和对盒基板，所述带通滤光片设置在所述对盒基板上朝向所述阵列基板的一侧。
本发明提供的显示设备，通过采用带通滤光片，利用窄带干涉滤光方法实现对红、绿、蓝三色光的中心波长及半高峰宽的调制，从而实现对红、绿、蓝三色光的窄带滤光，达到提高显示设备的色域的效果，实现高色域显示。
附图说明
附图是用来提供对本发明的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本发明，但并不构成对本发明的限制。
图1是本发明实施例一所提供的显示设备的结构示意图；
图2是本发明实施例二所提供的显示设备的结构示意图；
图3是本发明实施例三所提供的显示设备的结构示意图；
图4是本发明实施例四所提供的显示设备的结构示意图。
在附图中，1-带通滤光片；2-背光源；3-液晶显示面板；31-阵列基板；32-彩膜基板；33-对盒基板；41-第一偏光片；42-第二偏光片。
具体实施方式
以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明，并不用于限制本发明。
本发明提供了一种显示设备，如图1所示，包括液晶显示面板3和背光源2，还包括设置于所述显示设备中与液晶显示面板3的像素阵列对应的多个带通滤光片1，带通滤光片1用于对背光源2的出射光进行窄带滤光。
一般的，像素阵列包括多个像素单元，每个像素单元包括多个子像素单元(如，红、绿、蓝子像素单元)。
需要说明的是，图1中仅画出了液晶显示面板3的其中一个像素单元(包括三个子像素单元)，因此，图1中只包括一个与该像素阵列相对应的带通滤光片1。而实际上，各带通滤光片1对应于整个像素阵列，对待投射到像素阵列上的背光，或已经投射到像素阵列的背光进行窄带滤光，使得显示设备出射后的光为高色域光。
带通滤光片1具有让一定波段的光透过，偏离这个波段光部分截止的作用。在带通滤光片设计上采用不同折射率材料进行叠合而成。
具体的，带通滤光片1包括基底和设置在所述基底上的多层折射率不同的膜层，通过调节各个膜层的厚度和折射率，可得到不同波段光可透过的不同的带通滤光片。利用光的干涉原理即可实现特定光谱范围的光通过，从而达到窄带滤光的效果。
所述基底可以为玻璃基板，也可以为聚对苯二甲酸乙二酯(PET)、聚对苯二甲酸丁二醇酯(PBT)、聚甲基丙烯酸甲酯(PMMA)等树脂材料制成的衬底，滤光作用层为多层干涉膜结构。
所述多层膜层可以采用物理气相沉积、化学气相沉积、液相成膜等方法进行制作，其中最常用的是物理气相沉积方法，包括：真空蒸镀、溅射、离子镀等。
本发明通过采用带通滤光片，利用窄带干涉滤光方法实现对不同颜色子像素对应的光的调节。比如，可以对红、绿、蓝子像素对应的红、绿、蓝三色光的中心波长及半高峰宽的调制，从而实现对红、绿、蓝三色光的窄带滤光，达到提高显示设备的色域的效果，实现高色域显示。
需要说明的是，本发明中的带通滤光片可以是单带通滤光片，例如：只对红光、绿光和蓝光中的一种的中心波长和半高峰宽进行调节；或者，也可以是三带通滤光片，同时对红光、绿光和蓝光的中心波长和半高峰宽进行调节，以最大程度地提高色域范围，改善显示效果。
若带通滤光片为单带通滤光片，则需要对应每一个子像素的区域设置单带通滤光片，如，在红色子像素对应的区域设置可调节红光的单带通滤光片，在绿色子像素对应的区域设置可调节绿光的单带通滤光片，在蓝色子像素对应的区域设置可调节蓝光的单带通滤光片。
若带通滤光片为三带通滤光片，则在对应于每个像素单元的区域设置三带通滤光片。
本发明所述带通滤光片为窄带通滤光片。以下将详细介绍窄带通滤光片。
带通滤光片具有让一定波段的光透过，偏离这个波段的光截止的作用，光能够透过的波段为通带，两侧受到抑制的波段为截止带。可让短波段通过的滤光片为短波通滤光片，可让长波段通过的滤光片为长波通滤光片。
在本发明中，窄带通滤光片的其中一种实施方式为，短波通滤光片与长波通滤光片组合结构得到的双截止组合滤光片形成窄带通滤光片。
双截止组合滤光片即长波通滤光片与短波通滤光片的组合结构，即和的组合。
其中，H和L表示光学厚度λ/4的高折射膜层和低折射率膜层，而H/2和L/2表示光学厚度为λ/8的高折射率膜层和低折射率膜层，m、n为正整数。所述窄带通滤光片由长波通滤光片和短波通滤光片组合而成，适当选取m、n的值，即可实现不同通带。
针对红色窄带通滤光片，红色长波通滤光片用于截至截止比红色波段的波长更长更短的波，红色短波通滤光片用于截至截止比红色波段的波长更短长的波。
针对绿色窄带通滤光片，绿色长波通滤光片用于截止比绿色波段的波长更短的波，绿色短波通滤光片用于截止比绿色波段的波长更长的波。
针对蓝色窄带通滤光片，蓝色长波通滤光片用于截止比蓝色波段的波长更短的波，蓝色短波通滤光片用于截止比蓝色波段的波长更长的波。
每一种颜色的窄带通滤光片都是由对应颜色的长波通滤光片和短波通滤光片组成。长波通滤光片和短波通滤光片可以贴合在一起，也可以分别贴合在基底的两侧，在基底上的投影重合。长波通滤光片和短波通滤光片与阵列基板或背光源的相对位置不限。
相应地，本发明所提供的显示设备可以有以下两种实施方式：
第一种实施方式中，所述液晶显示面板的像素阵列包括多个像素单元，每个所述像素单元包括三个子像素单元；所述多个带通滤光片为与所述各像素单元一一对应的三带通滤光片，所述三带通滤光片能够同时对红光、绿光和蓝光的中心波长和半高峰宽进行调节。
在第二种实施方式中，所述液晶显示面板的像素阵列包括多个像素单元，每个所述像素单元包括三个子像素单元；所述多个带通滤光片为与所述各子像素单元一一对应的单带通滤光片；每个单带通滤光片能够对其对应颜色的光的中心波长和半高峰宽进行调节。
以下通过具体的实施例对本发明的上述两种实施方式进行详细的阐述。
图1是本发明实施例一所提供的显示设备的结构示意图。所述显示设备包括背光源2和液晶显示面板3，带通滤光片1设置在背光源2与液晶显示面板3之间。
进一步地，液晶显示面板3的入光面设置有第一偏光片41，液晶显示面板3的出光面设置有第二偏光片42，带通滤光片1设置在背光源2与第一偏光片41之间。
在本实施例中，带通滤光片1为三带通滤光片，可以单独制成于玻璃基板上，并设置在背光源2与第一偏光片41之间，以实现对背光源2发出的光线进行窄带滤光的效果。
图2是本发明实施例二所提供的显示设备的结构示意图。所述显示设备包括背光源2和液晶显示面板3，带通滤光片1设置在背光源2与液晶显示面板3之间。进一步地，液晶显示面板3的入光面设置有第一偏光片41，液晶显示面板3的出光面设置有第二偏光片42，带通滤光片1设置在第一偏光片41与液晶显示面板3之间。
在本实施例中，带通滤光片1为三带通滤光片，带通滤光片1可以直接制作在液晶显示面板3的下基板上，在不增加显示模组厚度的基础上实现窄带滤光，提高色域范围。
例如在图2中，液晶显示面板3包括依次设置在背光源2的出光侧的阵列基板31和彩膜基板32，带通滤光片1设置于阵列基板31上。
图3是本发明实施例三所提供的显示设备的结构示意图。所述显示设备包括背光源2和液晶显示面板3，带通滤光片1设置在液晶显示面板3的出光侧。
进一步地，液晶显示面板3的入光面设置有第一偏光片41，液晶显示面板3的出光面设置有第二偏光片42，带通滤光片1设置在液晶显示面板3与第二偏光片42之间。
在本实施例中，带通滤光片1为三带通滤光片，带通滤光片1可以直接制作在液晶显示面板3的上基板上，在不增加显示模组厚度的基础上实现窄带滤光，提高色域范围。
例如在图3中，液晶显示面板3包括依次设置在背光源2的出光侧的阵列基板31和彩膜基板32，带通滤光片1设置于彩膜基板32上。
并且，由于带通滤光片1对光线的反射率高于玻璃对光线的反射率，采用本实施例所提供的显示设备除提高色域外，还有益于增强显示设备的反射率，适用于一些需要突出反射性能的产品上，如镜面产品等。
需要说明的是，此处的带通滤光片1也可以设置在第二偏光片42的出光侧，这里不再赘述。
在上述三个具体实施例中，带通滤光片1为三带通滤光片，能够同时对红光、绿光和蓝光的中心波长和半高峰宽进行调节。
优选地，带通滤光片1能够通过的红光的中心波长的范围为610-690nm，带通滤光片1能够通过的红光的半高峰宽的范围为20-60nm，以实现对红光进行窄带滤光。
带通滤光片1能够通过的绿光的中心波长的范围为490-570nm，带通滤光片1能够通过的绿光的半高峰宽的范围为20-60nm，以实现对绿光进行窄带滤光。
带通滤光片1能够通过的蓝光的中心波长的范围为400-480nm，带通滤光片1能够通过的蓝光的半高峰宽的范围为20-60nm，以实现对蓝光进行窄带滤光。
图4是本发明实施例四所提供的显示设备的结构示意图。在本实施例中，带通滤光片1为与红、绿、蓝子像素单元一一对应的单带通滤光片，每个单带通滤光片1能够对其对应颜色的光的中心波长和半高峰宽进行调节。
具体地，带通滤光片1’包括排列为阵列的多个滤光单元，每个所述滤光单元均包括红色子单元、绿色子单元和蓝色子单元，所述滤光单元与所述显示装置的像素单元一一对应。
其中，对应于红色子像素单元的单带通滤光片用于对红光进行窄带滤光；对应于绿色子像素单元的单带通滤光片用于对绿光进行窄带滤光；对应于蓝色子像素单元的单带通滤光片用于对蓝光进行窄带滤光。
也就是说，每个子像素单元均对应一个与其颜色相同的单带通滤光片，用于对相应的子像素单元的出射光进行窄带滤光，以提高显示设备的色域。
优选地，如图4所示，所述显示设备包括背光源2和液晶显示面板3，液晶显示面板3包括依次设置在背光源2的出光侧的阵列基板31和对盒基板33，带通滤光片1可以用来替代原先的彩色滤光片，即带通滤光片1设置在对盒基板33上朝向阵列基板31的一侧。
可以看出，本实施例中的带通滤光片1同时起到了彩膜层和窄带滤光层的效果，在不增加工艺步骤和产品厚度的情况下，可实现高色域显示。
此外，本发明中的显示面板不仅可以是如图1-图4所示的液晶显示面板，也可以是发光二极管显示面板，只需将带通滤光片设置在发光二极管显示面板的出光侧即可。
本发明通过采用带通滤光片，可以实现红、绿、蓝三色光的中心波长及半高峰宽在一定范围内连续可调，从而能够实现对红、绿、蓝三色光的窄带滤光。采用本发明的结构有利于实现高色域显示，改善显示效果。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (10)

1.一种显示设备，包括液晶显示面板和背光源，其特征在于，还包括设置于所述显示设备中与所述液晶显示面板的像素阵列对应的多个带通滤光片，所述带通滤光片用于对所述背光源的出射光进行窄带滤光。
2.根据权利要求1所述的显示设备，其特征在于，所述像素阵列包括多个像素单元，每个所述像素单元包括三个子像素单元；
所述多个带通滤光片为与所述各像素单元一一对应的三带通滤光片，所述三带通滤光片能够同时对红光、绿光和蓝光的中心波长和半高峰宽进行调节。
3.根据权利要求1所述的显示设备，其特征在于，所述像素阵列包括多个像素单元，每个所述像素单元包括三个子像素单元；
所述多个带通滤光片为与所述各子像素单元一一对应的单带通滤光片；
每个单带通滤光片能够对其对应颜色的光的中心波长和半高峰宽进行调节。
4.根据权利要求1至3中任意一项所述的显示设备，其特征在于，所述带通滤光片设置在所述背光源与所述液晶显示面板之间；且设置在所述背光源的出光面上，或设置在所述液晶显示面板的入光面上。
5.根据权利要求4所述的显示设备，其特征在于，所述液晶显示面板的入光面设置有第一偏光片，所述液晶显示面板的出光面设置有第二偏光片；
所述带通滤光片设置在所述背光源与所述第一偏光片之间；
或者，所述带通滤光片设置在所述第一偏光片与所述液晶显示面板之间。
6.根据权利要求5所述的显示设备，其特征在于，所述液晶显示面板包括依次设置在所述背光源出光侧的阵列基板和彩膜基板，所阵列基板上设置有所述像素阵列，所述带通滤光片设置于所述阵列基板的入光面上。
7.根据权利要求1至3中任意一项所述的显示设备，其特征在于，所述带通滤光片设置在所述液晶显示面板的出光面上。
8.根据权利要求7所述的显示设备，其特征在于，所述液晶显示面板的入光面设置有第一偏光片，所述显示面板的出光面设置有第二偏光片；
所述带通滤光片设置在所述液晶显示面板与所述第二偏光片之间。
9.根据权利要求8所述的显示设备，其特征在于，所述液晶显示面板包括依次设置在所述背光源出光侧的阵列基板和彩膜基板，所述带通滤光片设置于所述彩膜基板的出光面。
10.根据权利要求1至3中任意一项所述的显示设备，其特征在于，所述液晶显示面板包括依次设置在所述背光源的出光侧的阵列基板和对盒基板，所述带通滤光片设置在所述对盒基板上朝向所述阵列基板的一侧。
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