CN106707652A - 一种显示装置及其控制方法 - Google Patents

一种显示装置及其控制方法 Download PDF

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CN106707652A
CN106707652A CN201710022953.1A CN201710022953A CN106707652A CN 106707652 A CN106707652 A CN 106707652A CN 201710022953 A CN201710022953 A CN 201710022953A CN 106707652 A CN106707652 A CN 106707652A
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liquid crystal
peep
display device
display
display panel
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王雪绒
孙海威
张财政
王佳男
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BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Optoelectronics Technology Co Ltd
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Priority to CN201710022953.1A priority Critical patent/CN106707652A/zh
Publication of CN106707652A publication Critical patent/CN106707652A/zh
Priority to US15/773,642 priority patent/US20200257155A1/en
Priority to PCT/CN2017/103149 priority patent/WO2018129958A1/zh
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/1323Arrangements for providing a switchable viewing angle
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133504Diffusing, scattering, diffracting elements
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
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    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/137Devices 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
    • G02F1/13781Devices 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 using smectic liquid crystals
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/50OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306Circuit arrangements or driving methods for the control of single liquid crystal cells
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133606Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1347Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13476Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which at least one liquid crystal cell or layer assumes a scattering state
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/137Devices 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
    • G02F1/13756Devices 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 the liquid crystal selectively assuming a light-scattering state
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/137Devices 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
    • G02F1/13775Polymer-stabilized liquid crystal layers
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/137Devices 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
    • G02F1/139Devices 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 based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1391Bistable or multi-stable liquid crystal cells
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
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Abstract

本发明提供一种显示装置及其控制方法,涉及显示技术领域,可实现显示装置可视模式的切换。该显示装置包括防窥显示模组,所述防窥显示模组包括显示面板和防窥结构;还包括双稳态液晶盒,所述双稳态液晶盒具有透过态和散射态两种稳定状态;其中,所述双稳态液晶盒设置在所述防窥结构的出光侧。

Description

一种显示装置及其控制方法
技术领域
本发明涉及显示技术领域,尤其涉及一种显示装置及其控制方法。
背景技术
目前,为了保护商业机密和个人隐私,通常采用防窥片,使显示装置的可视角度为60°左右,即从所述显示装置的左边或右边30°以外的区域看所述显示装置的显示屏,只能看到漆黑的画面,从而使所述显示屏显示出的信息只能供正面阅读的使用者读取,进而避免了信息外泄而造成的损失。
然而,增加了防窥片的上述显示装置,会使显示装置的可视角度一直限定在60°左右,当所述显示装置显示的信息需要向多人展示,上述显示装置无法实现,从而对使用者使用该显示装置带来一定的不便。
发明内容
本发明的实施例提供一种显示装置及其控制方法,可实现显示装置可视模式的切换。
为达到上述目的,本发明的实施例采用如下技术方案:
一方面,提供一种显示装置,包括防窥显示模组,所述防窥显示模组包括显示面板和防窥结构;还包括双稳态液晶盒,所述双稳态液晶盒具有透过态和散射态两种稳定状态;其中,所述双稳态液晶盒设置在所述防窥结构的出光侧。
可选的,所述防窥结构为防窥片。
进一步优选的,所述显示面板为自发光显示面板或被动发光显示面板;其中,当所述显示面板为自发光显示面板时,所述防窥片设置在所述显示面板的出光侧;当所述显示面板为被动发光显示面板时,所述防窥片设置在所述显示面板的入光侧或出光侧。
可选的,所述防窥结构为窄视角背光源;所述显示面板为被动发光显示面板。
基于上述,优选的,所述自发光显示面板包括OLED显示面板。
优选的,所述被动发光显示面板包括LCD显示面板。
优选的,所述双稳态液晶盒包括第一基板、第二基板以及设置在所述第一基板和第二基板之间的双稳态液晶;所述第一基板和所述第二基板上设置有多个透明电极。
进一步优选的,所述双稳态液晶为近晶型液晶。
优选的,所述显示装置还包括切换按钮;所述切换按钮用于控制所述双稳态液晶盒呈透过态或散射态。
另一方面,提供一种如上述显示装置的控制方法,包括:在共享显示模式时,控制所述双稳态液晶盒呈透过态;在防窥显示模式时,控制所述双稳态液晶盒呈散射态。
优选的,在共享显示模式时,通过控制所述切换按钮,使所述双稳态液晶盒呈透过态;在防窥显示模式时,通过控制所述切换按钮,使所述双稳态液晶盒呈散射态。
本发明实施例提供一种显示装置及其控制方法,通过在防窥显示模组的防窥结构的出光侧设置双稳态液晶盒,可根据双稳态液晶盒的两种稳定状态,使显示装置分别处于防窥显示模式和共享显示模式,从而可使所述显示装置实现可视模式的切换。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种显示装置的结构示意图一;
图2为本发明实施例提供的一种显示装置的结构示意图二;
图3为本发明实施例提供的一种显示装置的结构示意图三;
图4为本发明实施例提供的一种显示装置的结构示意图四;
图5为本发明实施例提供的一种显示装置的结构示意图五;
图6为本发明实施例提供的一种显示装置的结构示意图六;
图7为本发明实施例提供的一种双稳态液晶盒的原理示意图一;
图8为本发明实施例提供的一种双稳态液晶盒的原理示意图二;
图9为一种防窥显示装置与常规显示装置可视角度和显示亮度的对比图;
图10为一种双稳态显示装置与常规显示装置可视角度和显示亮度的对比图;
图11为本发明实施例提供的显示装置中两种显示模式可视角度和显示亮度的对比图。
附图说明:
11-显示面板;12-防窥结构;13-双稳态液晶盒;131-第一基板;132-第二基板;133-双稳态液晶;134-透明电极;14-背光源;15-防窥片;16-窄视角背光源。
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,都属于本发明保护的范围。
本发明实施例提供一种显示装置,如图1-6所示,包括防窥显示模组,防窥显示模组包括显示面板11和防窥结构12;还包括双稳态液晶盒13,双稳态液晶盒13具有透过态和散射态两种稳定状态;其中,双稳态液晶盒13设置在防窥结构12的出光侧。
其中,双稳态液晶盒13的两种稳定状态可根据施加在双稳态液晶上的电压大小而定。
当双稳态液晶盒13处于透过态时,从防窥结构12出射的光在双稳态液晶盒13内折射角较小或沿直线传播,因而,所述显示装置的可视角度较小,显示装置处于防窥显示模式,此时,所述显示装置显示的图像只能被正面阅读者读取。当双稳态液晶盒13处于散射态时,从防窥结构12出射的光在双稳态液晶盒13内发生散射,因而,所述显示装置的可视角度较大,显示装置处于共享显示模式,此时,所述显示装置显示的图像能被多个方位的阅读者读取,从而可以向多人展示所述显示装置显示的信息。
需要说明的是,第一,不对双稳态液晶盒13的具体结构,以及其中的液晶类型进行限定,只要根据施加在双稳态液晶盒13上的电压的不同,能呈现出透过态和散射态两种稳定结构即可。
第二,对于所述显示面板,可以是自发光显示面板,也可以是被动发光显示面板。基于此,对于防窥结构12和双稳态液晶盒13的设置位置,可根据显示面板的类型而定。
本发明实施例提供一种显示装置,通过在防窥显示模组的防窥结构的出光侧设置双稳态液晶盒13,可根据双稳态液晶盒13的两种稳定状态,使显示装置分别处于防窥显示模式和共享显示模式,从而可使所述显示装置实现可视模式的切换。
可选的,如图1-4所示,防窥结构12为防窥片15。
需要说明的是,不对所述防窥片15的具体结构进行限定,只要能将所述显示装置的可视角度限定在一个较小的范围内即可。例如,可以是百叶窗结构的防窥片15。
本发明实施例将防窥片15作为防窥结构12,可使所述显示装置的显示效果较好。
进一步的,显示面板11为自发光显示面板或被动发光显示面板;其中,当显示面板11为自发光显示面板时,防窥片15设置在显示面板11的出光侧;当显示面板11为被动发光显示面板时,防窥片15设置在显示面板11的入光侧或出光侧。
具体的,当显示面板11为自发光显示面板时,如图1所示,防窥片15设置在显示面板11的出光侧,双稳态液晶盒13设置在防窥片15的出光侧。
当显示面板11为被动发光显示面板时,如图2-4所示,所述显示装置还包括背光源14。基于此,如图2所示,防窥片15可设置在显示面板11的入光侧,双稳态液晶盒13设置在防窥片15与显示面板11之间;或者,如图3所示,防窥片15可设置在显示面板11的入光侧,双稳态液晶盒13设置在显示面板11的出光侧;或者,如图4所示,防窥片15可设置在显示面板11的出光侧,双稳态液晶盒13设置在防窥片15的出光侧。
进一步的,考虑到OLED(Organic Light-Emitting Diode,有机发光二极管)显示面板具有视角范围大、画质均匀、反应速度快、驱动简单等优点,优选的,所述自发光显示面板为OLED显示面板。
考虑到LCD(Liquid Crystal Display,液晶显示器)显示面板具有体积小、功耗低、无辐射等优点,优选的,所述被动发光显示面板为LCD显示面板。
可选的,如图5-6所示,防窥结构12为窄视角背光源16,基于此,显示面板11为被动发光显示面板。
其中,显示面板11和双稳态液晶盒13位于窄视角背光源16的出光侧。在此基础上,如图5所示,双稳态液晶盒13可位于窄视角背光源16与显示面板11之间,或者,如图6所示,双稳态液晶盒13位于显示面板11的出光侧。
本发明实施例采用窄视角背光源16作为防窥结构12,可降低制备成本。
优选的,如图7所示,所述双稳态液晶盒包括第一基板131、第二基板132以及设置在第一基板131和第二基板132之间的双稳态液晶133;第一基板131和第二基板132上设置有多个透明电极134。
其中,上述透明电极134的材料可以为ITO或IZO。
由于近晶型液晶具有层内流动,层间不流动的二维有序特性,可以用于大尺寸的显示,因此,优选的,双稳态液晶133为近晶型液晶。
双稳态液晶盒13的工作原理为:如图7所示,当施加于第一基板131上透明电极134的电压与施加于第二基板132上透明电极134的电压的压差小于第一阈值时,双稳态液晶盒13内的液晶分子处于规则排列状态,形成透过态;如图8所示,当施加于第一基板131上透明电极134的电压与第二基板132上透明电极134的电压的压差大于第二阈值时,双稳态液晶盒13内的液晶分子处于乱序排列状态,形成散射态;当施加于第一基板131上透明电极134的电压与第二基板132上透明电极134的电压的压差处于第一阈值和第二阈值之间时,双稳态液晶盒13内液晶分子处于透过态和散射态之间。在此基础上,撤走施加在双稳态液晶盒13上的电压后,由于液晶分子之间的相互作用力,双稳态液晶盒13会维持施加电压时的状态,形成稳态。
其中,当所述双稳态液晶133为近晶型液晶时,所述第一阈值可以为5V;所述第二阈值可以为30V。
需要说明的是,对于第一基板131和第二基板132上设置的透明电极134的个数不进行限定,可以根据所述显示装置进行显示时,需要达到的分辨率进行合理设置。此处,所述显示装置的分辨率与透明电极134的个数有关,透明电极134的个数越多,所述显示装置能达到的分辨率便越高。
本实施例中,由于第一基板131和第二基板132上设置有多个透明电极134,通过控制第一基板131和第二基板132上透明电极134的电压,可以使双稳态液晶盒13呈透过态或散射态。
下面通过几个实验数据来说明本发明显示装置的可视角度和显示亮度。
如图9所示为包括所述防窥显示模组但不包括双稳态液晶盒13的防窥显示装置,与包括显示面板但不包括防窥结构12和双稳态液晶盒13的常规显示装置的可视角度和显示亮度对比图;其中,x轴为可视角度,y轴为显示亮度。
由图9中可以看出,所述防窥显示装置的可视角度范围明显小于所述常规显示装置的可视角度范围。在此基础上,由于所述防窥显示装置中增加了防窥片,使得光损耗增加,从而使显示亮度降低。
如图10所示为包括双稳态液晶盒13但不包括防窥结构12的双稳态显示装置,与包括显示面板但不包括防窥结构12和双稳态液晶盒13的常规显示装置的可视角度和显示亮度对比图;其中,x轴为可视角度,y轴为显示亮度。
由图10中可以看出,不管所述双稳态显示装置处于透过态显示模式还是散射态显示模式,相对所述常规显示装置,其可视角度范围基本无变化;当所述双稳态显示装置处于透过态显示模式时,所述双稳态显示装置显示亮度随可视角度的变化趋势与所述常规显示装置显示亮度随可视角度的变化趋势基本相同;当所述双稳态显示装置处于散射态显示模式时,所述双稳态显示装置的显示亮度随可视角度的变大而逐渐减小。
如图11所示为本发明的显示装置分别处于防窥显示模式和共享显示模式时可视角度和显示亮度对比图;其中,x轴为可视角度,y轴为显示亮度。
由图11中可以看出,当本发明的显示装置处于防窥显示模式时,所述显示装置的可视角度较小、显示亮度较高;当所述显示装置处于共享显示模式时,所述显示装置的可视角度较大、显示亮度较低。
由上述可以看出,本发明的显示装置处于防窥显示模式时,可视角度范围和亮度基本与包括所述防窥显示模组但不包括双稳态液晶盒13的防窥显示装置相同。本发明的显示装置处于共享显示模式时,可视角度范围和亮度基本与包括双稳态液晶盒13但不包括防窥结构12的双稳态显示装置处于散射态显示模式相同。
即,本发明通过将防窥显示模组和双稳态液晶盒13结合,可使显示装置兼容两种显示模式,且在两种显示模式时,显示的效果与包括所述防窥显示模组但不包括双稳态液晶盒13的防窥显示装置,以及包括双稳态液晶盒13但不包括防窥结构12的双稳态显示装置相当。
优选的,所述显示装置还包括切换按钮;所述切换按钮用于控制所述双稳态液晶盒呈透过态或散射态。
本发明实施例,可以根据用户需要通过切换按钮控制双稳态液晶盒13的稳定状态,当需要所述显示装置处于防窥显示时,可以通过切换按钮控制双稳态液晶盒13处于透过态;当需要所述显示装置处于共享显示时,可以通过切换按钮控制双稳态液晶盒13处于散射态。
本发明实施例还提供一种上述显示装置的控制方法,包括:在共享显示模式时,控制所述双稳态液晶盒呈透过态;在防窥显示模式时,控制所述双稳态液晶盒呈散射态。
其中,当双稳态液晶盒包括设置于第一基板131和第二基板132上的多个透明电极134时,通过分别向第一基板131和第二基板132上的多个所述透明电极134输入电压信号,控制施加在双稳态液晶133上的电压,从而可控制所述显示装置处于共享显示模式或防窥显示模式。
优选的,在共享显示模式时,通过控制所述切换按钮,使双稳态液晶盒13呈透过态;在防窥显示模式时,通过控制所述切换按钮,使双稳态液晶盒13呈散射态。
示例的,按下所述切换按钮,使施加于第一基板131上透明电极134的电压与第二基板132上透明电极134的电压的压差大于第二阈值,从而使双稳态液晶盒13呈散射态,进而使所述显示装置处于共享显示模式;再一次按下所述切换按钮,施加于第一基板131上透明电极134的电压与第二基板132上透明电极134的电压的压差小于第一阈值,从而使双稳态液晶盒13呈透过态,进而使所述显示装置处于防窥显示模式。
其中,可通过在所述显示装置的驱动IC中集成电压输出电路,控制施加在双稳态液晶133上的电压的大小;或通过在所述显示装置的整机主板上预留高电压和低电压引脚,控制施加在双稳态液晶133上的电压的大小。
本发明实施例,可以根据用户需要通过切换按钮控制双稳态液晶盒13的稳定状态,当需要所述显示装置处于防窥显示模式时,可以通过切换按钮控制双稳态液晶盒13处于透过态;当需要所述显示装置处于共享显示模式时,可以通过切换按钮控制双稳态液晶盒13处于散射态。
以上所述,仅为本发明的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。因此,本发明的保护范围应以所述权利要求的保护范围为准。

Claims (11)

1.一种显示装置,其特征在于,包括防窥显示模组,所述防窥显示模组包括显示面板和防窥结构;
还包括双稳态液晶盒,所述双稳态液晶盒具有透过态和散射态两种稳定状态;
其中,所述双稳态液晶盒设置在所述防窥结构的出光侧。
2.根据权利要求1所述的显示装置,其特征在于,所述防窥结构为防窥片。
3.根据权利要求2所述的显示装置,其特征在于,所述显示面板为自发光显示面板或被动发光显示面板;
其中,当所述显示面板为自发光显示面板时,所述防窥片设置在所述显示面板的出光侧;当所述显示面板为被动发光显示面板时,所述防窥片设置在所述显示面板的入光侧或出光侧。
4.根据权利要求1所述的显示装置,其特征在于,所述防窥结构为窄视角背光源;
所述显示面板为被动发光显示面板。
5.根据权利要求3所述的显示装置,其特征在于,所述自发光显示面板包括OLED显示面板。
6.根据权利要求3或4所述的显示装置,其特征在于,所述被动发光显示面板包括LCD显示面板。
7.根据权利要求1所述的显示装置,其特征在于,所述双稳态液晶盒包括第一基板、第二基板以及设置在所述第一基板和第二基板之间的双稳态液晶;
所述第一基板和所述第二基板上设置有多个透明电极。
8.根据权利要求7所述的显示装置,其特征在于,所述双稳态液晶为近晶型液晶。
9.根据权利要求1所述的显示装置,其特征在于,还包括切换按钮;
所述切换按钮用于控制所述双稳态液晶盒呈透过态或散射态。
10.一种如权利要求1-9任一项所述显示装置的控制方法,其特征在于,包括:
在共享显示模式时,控制所述双稳态液晶盒呈透过态;
在防窥显示模式时,控制所述双稳态液晶盒呈散射态。
11.根据权利要求10所述的控制方法,其特征在于,在共享显示模式时,通过控制所述切换按钮,使所述双稳态液晶盒呈透过态;
在防窥显示模式时,通过控制所述切换按钮,使所述双稳态液晶盒呈散射态。
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