CN101889245A - 具有彩色区及透明区的反射式单向屏幕 - Google Patents

具有彩色区及透明区的反射式单向屏幕 Download PDF

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CN101889245A
CN101889245A CN2008801193767A CN200880119376A CN101889245A CN 101889245 A CN101889245 A CN 101889245A CN 2008801193767 A CN2008801193767 A CN 2008801193767A CN 200880119376 A CN200880119376 A CN 200880119376A CN 101889245 A CN101889245 A CN 101889245A
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Abstract

本发明涉及一种单向显示系统,其具有显示层,所述显示层具有不透明活动像素及与所述活动像素间置的透明非活动像素。每一活动像素具有彩色侧及不透明侧。所述活动像素能够形成从所述显示层的第一侧可见但从所述显示层的第二侧不可见的图像,且所述非活动像素允许从所述显示层的所述第二侧看到所述显示层的所述第一侧上的物体。

Description

具有彩色区及透明区的反射式单向屏幕
相关申请案交叉参考
此申请案与以下申请案相关:(1)2005年4月18日提出申请、名称为“偏振式投影显示器(Polarized Projection Display)”的第11/109,543号美国专利申请案;(2)2007年3月14日提出申请、名称为“偏振式投影显示器(Polarized Projection Display)”的第11/686,195号美国专利申请案;(3)2006年3月3日提出申请、名称为“单向透明显示系统(One-Way Transparent Display Systems)”的第11/367,687号美国专利申请案;及(4)2007年1月23日提出申请、名称为“具有全息屏幕的投影显示器(Projection Display with Holographic Screen)”的第11/626,247号美国专利申请案;及(5)2007年7月24日提出申请、名称为“使用滤色片的单向显示器(One-Way Display  Using Color Filter)”的第11/782,597号美国专利申请案,以上所述申请案以引用的方式并入本文中。
技术领域
本发明涉及显示器,且更具体来说,涉及具有从显示器的一侧可见但从其另一侧不可见的图像的透明显示器。
背景技术
电子墨水是一种可处理成膜以便集成到电子显示器中的材料。电子墨水的基本组成是直径约为人类发丝大小的数百万个小微胶囊。在一个具体化形式中,每一微胶囊含有悬浮在透明流体中的带正电的白色粒子及带负电的黑色粒子。当施加负电场时,所述白色粒子移向微胶囊的顶部,在此处,所述白色粒子变得为用户可见。此使表面在所述部位处呈现白色。同时,相反的电场将黑色粒子拉向微胶囊的底部,在此处,所述黑色粒子被隐藏。通过颠倒此过程,黑色粒子呈现在胶囊的顶部处,现在此使表面在所述部位处呈现黑色。
为形成电子墨水电子显示器,需将墨水印刷到塑料膜片上,再将所述塑料膜片层压到电路层。所述电路形成随后可由显示驱动器控制的像素图案。这些微胶囊悬浮在液态“载体介质”中,此液态“载体介质”允许使用现有的丝网印刷过程将所述微胶囊印刷到几乎任何表面,包含玻璃、塑料、纤维及甚至纸。
单向透视膜是用于户外广告的窗口-图形媒体,包含车辆及建筑物包覆物、采购点、零售及商业窗口看板、公司标识等等。通常,单向透视膜经打孔且具有带有图像的不透明光反射表面及光吸收表面。当从一个方向观看所述膜时所述图像为清晰可见且当从第二相反方向观看所述膜时,打孔允许大致无障碍的通透观看。
发明内容
在本发明的一个实施例中,单向显示系统具有显示层,所述显示层具有不透明活动像素及与所述活动像素间置的透明非活动像素。每一活动像素具有彩色侧及不透明侧。所述活动像素能够形成从所述显示层的第一侧可见但从所述显示层的第二侧不可见的图像,且所述非活动像素允许从所述显示层的所述第二侧看到所述显示层的所述第一侧上的物体。当将所使用的所述单向显示器部署在窗口上时,其允许外面的人看到所述图像同时里面的人能够透过窗口进行观看且看到外部而观看不到图像,反之亦然。
附图说明
图1及2图解说明本发明的一个实施例中具有彩色区及透明区的单向显示器。
图3图解说明本发明的一个实施例中使用彩色活动像素及透明非活动像素的单向显示器的显示层。
图4图解说明本发明的一个实施例中使用不透明及透明衬底的单向显示器的显示层。
图5图解说明本发明的一个实施例中具有偏振式光源及偏振滤光器的单向显示器。
图6图解说明本发明的一个实施例中具有偏振式光源、延迟器及偏振滤光器的单向显示器。
图7图解说明本发明的一个实施例中具有液晶显示器的单向显示器。
图8图解说明本发明的一个实施例中具有有机发光二极管显示器的单向显示器。
在不同的图中使用相同参考编号指示类似或相同的元件。
具体实施方式
本发明提供一种产生从一个方向观看显示器时可见的图像的单向显示器。当从第二相反方向观看时,所述显示器提供大致无障碍的通透观看。
图1图解说明本发明的一个实施例中的反射式单向显示系统100。系统100包含具有彩色区104及透明区106(为清晰起见仅标记每一种区中的一者)的平板显示器102。每一彩色区104具有彩色侧108及不透明侧110。彩色区104可由驱动器电路启动以形成当人112从系统100的侧面114(例如,外侧)观看显示器100时可见的图像。透明区106为人118提供从系统100的侧面120(例如,内侧)对物体116的大致无障碍的通透观看。
图2图解说明本发明的一个实施例中平板显示器102中的彩色区104与透明区106的间置图案。每一行及每一列由交替的彩色区及透明区构成。其它图案也是可以的,只要显示器100能够产生从侧面114观看时的清晰图像及从侧面120观看时的大致无障碍的通透观看。此外,彩色区104及透明区106可具有任何形状,包含圆形及矩形。
可借助众多显示器技术来实施平板显示器102,包含电子纸、液晶显示器(LCD)及有机发光二极管(OLED)显示器。图3在本发明的一个实施例中将平板显示器102图解说明为使用电泳技术的电子纸显示器。在电子纸显示器102中,彩色区104为活动微胶囊302(为清晰起见仅标记一者)。每一微胶囊302夹在透明顶部电极304及一个或一个以上透明或不透明底部电极306之间。每一微胶囊302含有具有对比色彩的带相反电的彩色粒子,所述彩色粒子由电极304及306所施加的电场控制以形成图像的一部分。举例来说,带电的彩色粒子由带负电的黑色粒子及带正电的白色粒子构成,反之亦然。另一选择为,电子纸显示器102利用每一微胶囊302含有由具有对比色彩的带相反电的半球体构成的彩色粒子的盖瑞冈技术(Gyricon technology)。举例来说,彩色粒子由带负电的黑色半球体及带正电的白色半球体构成,反之亦然。
在本发明的一个实施例中,透明区106为不具有彩色粒子的非活动微胶囊308(为清晰起见仅标记一者)。每一微胶囊308夹在透明顶部电极304与透明底部电极310之间。
微胶囊302及308安装在具有不透明区域312A及透明区域312B(为清晰起见仅标记每一种区域中的一者)的支撑衬底312上。举例来说,不透明区域312A及透明区域312B以一图案间置以使得微胶囊302位于不透明区域312A上且微胶囊308位于透明区域312B上。此允许光大致无障碍地穿过微胶囊308及透明区域312B以使得人118可如图1中所示透过系统100看到物体116。
图4图解说明彩色区104及透明区106的一个实施例。在此实施例中,彩色区104为间隔开的微胶囊302(为清晰起见仅标记一者)且透明区106由微胶囊302之间的空间所界定。每一微胶囊302夹在透明顶部电极304与一个或一个以上透明或不透明底部电极306之间。此外,微胶囊302位于支撑衬底312的不透明区域312A上,且微胶囊302之间的空间位于支撑衬底312的透明区域312B上方。此允许光大致无障碍地穿过微胶囊302之间的空间及透明区域312B以使得人118可如图1中所示透过系统100看到物体116。
图5图解说明本发明的一个实施例中的反射式单向显示系统500。系统500类似于系统100,除了系统500具有用以帮助人112在弱光情况下看到图像的光源以外。
系统500包含上文所述的平板显示器102、位于显示层102的侧面114上的透明发光层502及位于平板显示器102的侧面120上的偏振滤光器层504。发光层502发射由偏振滤光器层504滤光的经偏振光。
在使用中,发光层502照明由平板显示器102中的彩色区104形成的图像。任何穿过平板显示器102的透明区106的经偏振光由偏振滤光器层504滤光,因此其不干扰人118透过系统500进行观看。
在一个实施例中,借助透明有机发光二极管(TOLED)来实施发光层502。在一个实施例中,将发光层502及偏振滤光器层504安装到平板显示器102。
在一个实施例中,可将发光层502集成到平板显示器102中以使得平板显示器102的彩色区104的前表面发光。
在替代实施例中,用常规光源代替发光层502来照明平板显示器102的彩色侧面。如果常规光源用经偏振光照明平板显示器102,那么保留偏振滤光器层504。另一选择为,当常规光源用经任意偏振光照明平板显示器102时,去除偏振滤光器层504。
图6图解说明本发明的一个实施例中的反射式单向显示系统600。系统600类似于系统500,除了系统600使用反射偏振滤光器层来将更多的光引导到平板显示器102中的彩色区上以外。
系统600包含如上所述的平板显示器102、透明发光层502及偏振滤光器层504。系统600进一步包含位于发光层502的侧面114上的反射偏振滤光器层602、位于发光层502与平板显示器102之间的第一延迟器层604及位于平板显示器102与偏振滤光器层504之间的第二延迟器层606。
在使用中,发光层502照明由平板显示器102中的彩色区104形成的图像,因此人114可在弱光下看到图像。反射偏振滤光器层602反射由透明发光层502发射的经偏振光。因此,任何由发光层502发射且直接撞击偏振滤光器层602的经偏振光朝向平板显示器102被反射回来。穿过延迟器层604、从平板显示器102中的彩色区反射且再次以相反方向穿过延迟器层604的经偏振光能够穿过偏振滤光器层602。在一个实施例中,延迟器层604为1/4波片。
穿过偏振滤光器层602、延迟器层604及延迟器层606的周围光可穿过偏振滤光器层504。此允许人118从侧面120透过显示器600看到物体116。在一个实施例中,延迟器层606为以与延迟器层604相反的方向旋转光定向的1/4波片。
图7图解说明本发明的一个实施例中的LCD单向显示系统700。系统700包含由光源712背面照明的平板显示器702。在此实施例中,平板显示器702为LCD显示器。与图1的平板显示器102相同,LCD显示器702具有彩色区704及透明区706(为清晰起见仅标记每一种区中的一者)。彩色区704由具有液晶的活动单元构成,所述活动单元可由驱动器电路启动以形成当人112从系统700的侧面114(例如,外侧)观看系统700时可见的图像。透明区706由不具有任何液晶的非活动单元构成。
光源712具有不透明区714及透明区716(为清晰起见仅标记每一种区中的一者),所述两种区以一图案间置以使得彩色区704位于不透明区714上且透明区706位于透明区716上。LCD显示器702及光源712一起允许人112从侧面114看到由LCD显示器702形成且由光源712背面照明的图像且允许人118从侧面120透过系统700看到物体116。在一个实施例中,光源712由位于具有间置的透明区域及不透明区域的衬底(例如,方格形的衬底)上的TOLED构成。
图8图解说明本发明的一个实施例中的OLED单向显示系统800。系统800包含平板显示器802。在此实施例中,平板显示器802为OLED显示器。与图1的平板显示器102相同,OLED显示器802具有彩色区804及透明区806(为清晰起见仅标记每一种区中的一者)。彩色区804由具有OLED的活动单元构成,所述活动单元可由驱动器电路启动以形成当人112从系统800的侧面114(例如,外侧)观看系统800时可见的图像。透明区806由不具有任何OLED的非活动单元构成。
如果OLED显示器802在两侧上发光,那么系统800包含具有不透明区814及透明区816(为清晰起见仅标记每一种区中的一者)的支撑衬底812,所述两种区以一图案间置以使得彩色区804位于不透明区814上且透明区806位于透明区816上。OLED显示器802及衬底812一起允许人112从侧面114看到由OLED显示器802形成的图像,且允许人118从侧面120透过系统800看到物体116。在一个实施例中,衬底812为涂有形成不透明区814及透明区816的图案的透明材料。
所揭示实施例的特征的各种其它变更和组合均归属于本发明范围内。以上权利要求书涵盖众多实施例。

Claims (18)

1.一种单向显示系统,其包括:
彩色区,其每一者包括(1)从所述显示系统的第一侧观看到的彩色侧及(2)从所述显示系统的第二侧观看到的不透明侧;
透明区,其允许从所述显示系统的所述第二侧看到所述显示系统的所述第一侧上的物体;及
驱动器电路,其用于启动所述彩色区以形成从所述显示系统的所述第一侧可见但从所述显示系统的所述第二侧不可见的图像。
2.如权利要求1所述的系统,其中:
所述彩色区包括活动像素;且
所述透明区包括与所述活动像素间置的透明非活动像素。
3.如权利要求2所述的系统,其中所述活动像素包括位于电极层之间的具有带电彩色粒子的电子纸微胶囊。
4.如权利要求3所述的系统,其中所述具有带电彩色粒子的电子纸微胶囊位于支撑衬底的不透明区域上。
5.如权利要求4所述的系统,其中所述非活动像素包括位于所述支撑衬底的透明区域上的不具有带电彩色粒子的电子纸微胶囊。
6.如权利要求4所述的系统,其中所述透明区为所述具有带电彩色粒子的电子纸微胶囊之间的在所述支撑衬底的透明区域上面的空间。
7.如权利要求2所述的系统,其中所述显示系统的每一行及每一列包括交替的活动像素及非活动像素。
8.如权利要求1所述的系统,其进一步包括照明所述彩色区的彩色侧的光源。
9.如权利要求1所述的系统,其中所述活动像素及所述非活动像素形成显示层,所述系统进一步包括:
偏振滤光器层,其位于所述显示层的所述第二侧上,所述偏振滤光器层对来自所述显示层的所述第一侧的照明所述图像的经偏振光进行滤光。
10.如权利要求9所述的系统,其进一步包括:
透明发光层,其位于所述显示层的所述第一侧上,所述透明发光层发射所述经偏振光。
11.如权利要求10所述的系统,其中所述透明发光层包括透明有机发光二极管。
12.如权利要求9所述的系统,其进一步包括照明所述彩色区的彩色侧的偏振光源。
13.如权利要求2所述的系统,其中所述活动像素及所述非活动像素形成显示层,所述系统进一步包括:
第一延迟器层,其位于所述显示层的所述第一侧上;
透明发光层,其位于所述第一延迟器层的第一侧上,所述透明发光层发射经偏振光;及
反射偏振滤光器层,其位于所述透明发光层的第一侧上,其中所述反射偏振滤光器层:
反射最初由所述透明发光层发射的所述经偏振光;及
使穿过所述第一延迟器层、从所述显示层反射、再穿过所述第一延迟器层且到达所述反射偏振滤光器层上的所述经偏振光通过。
14.如权利要求13所述的系统,其进一步包括:
第二延迟器层,其位于所述显示层的所述第二侧上;及
偏振滤光器层,其位于所述第二延迟器层的第二侧上,其中所述偏振滤光器层:
阻挡穿过所述第一延迟器层、所述显示层、所述第二延迟器层且到达所述偏振滤光器层上的所述经偏振光;
使穿过所述第一延迟器层、所述显示层、所述第二延迟器层且到达所述偏振滤光器层上的周围环境光通过。
15.如权利要求1所述的系统,其中:
所述彩色区包括液晶显示(LCD)显示器中的位于背光的不透明区域上方的具有液晶的单元;且
所述透明区包括所述LCD显示器中的位于所述背光的透明区域上方的不具有液晶的单元。
16.如权利要求15所述的系统,其中所述背光包括具有支撑衬底的透明有机发光二极管,所述支撑衬底具有所述不透明区域及所述透明区域。
17.如权利要求1所述的系统,其中:
所述彩色区包括OLED显示器中的位于衬底的不透明区域上方的具有有机发光二极管(OLED)的单元;且
所述透明区包括所述OLED显示器中的位于所述衬底的透明区域上方的不具有OLED的单元。
18.如权利要求1所述的系统,其中所述衬底包括涂有所述透明区域及所述不透明区域的图案的透明材料。
CN2008801193767A 2007-12-05 2008-11-12 具有彩色区及透明区的反射式单向屏幕 Pending CN101889245A (zh)

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