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1. 发明授权

US5220442A Method of making color liquid crystal display with dead front appearance 失效
标题翻译：彩色液晶显示器具有死角外观的方法
公开(公告)号：US5220442A
公开(公告)日：1993-06-15
申请号：US755967
申请日：1991-09-06
申请人： Richard B. Dingwall , Lowell W. Knapp , John H. Steele , James S. Celebi , Virgil J. Hull
发明人： Richard B. Dingwall , Lowell W. Knapp , John H. Steele , James S. Celebi , Virgil J. Hull
IPC分类号： G02F1/1335 , G02F1/1347
CPC分类号： G02F1/1347 , G02F1/133512
摘要： A liquid crystal display unit is provided which includes a primary, image-defining display and a secondary display, arranged in series with the primary display. The primary and secondary displays have equal numbers of light shutters, similarly sized and located on each display, so that when the primary and secondary displays are placed in series their respective light shutters are also in series. When corresponding light shutters on the primary and secondary displays are closed, substantially no light passes through the displays to the opposite side of the primary display. An opaque mask is formed on the input side of the primary display to define the shape of the image elements to be displayed. This mask covers the edges of the primary display light shutters to define the image elements such that each light shutter on the secondary display is larger in size than its corresponding image element on the primary display. This permits the primary and secondary displays to be easily aligned with each other. Color patches can be located on the light input side of the primary display light shutters so that the viewed images are in color. The use of the opaque mask to form the image elements eliminates the need to form precisely shaped color patches. Since no light leaks through the light shutter pairs when switched off, and the mask blocks all light between light shutters, a display is provided having a true dead front. The true dead front display permits colored text displays using mimic-type electrodes to be produced. Since the secondary displays need not perform as well as the primary displays, displays which are not suitable for use as primary displays can be used as the secondary displays.
摘要翻译：提供了一种液晶显示单元，其包括与主显示器串联布置的主要，图像定义显示器和次显示器。主显示器和次显示器具有相同数量的光闸，类似尺寸并位于每个显示器上，使得当主显示器和次显示器串联放置时，其各自的光闸也是串联的。当主显示器和次显示器上的对应的光闸关闭时，基本上没有光通过显示器到主显示器的相对侧。在主显示器的输入侧形成不透明掩模，以限定要显示的图像元素的形状。该掩模覆盖主显示器光闸的边缘以限定图像元件，使得辅助显示器上的每个光闸的尺寸大于其在主显示器上的相应图像元件。这允许主显示器和辅助显示器彼此容易地对准。色块可以位于主显示器光闸的光输入侧，使得所观看的图像是彩色的。使用不透明蒙版来形成图像元素，消除了形成精确成形的色块的需要。由于在关闭时没有光通过光快门对泄漏，并且掩模阻挡光闸之间的所有光，所以提供具有真正死角的显示器。真正的死前显示器允许使用模拟型电极生产彩色文本显示器。由于辅助显示器不需要与主显示器一样执行，因此不适合用作主显示器的显示器可用作辅助显示器。

2. 发明授权

US5307188A Color liquid crystal display with dead front appearance having opaque mask formed on the primary display 失效
标题翻译：在主显示器上形成具有不透明掩模的死前外观的彩色液晶显示器
公开(公告)号：US5307188A
公开(公告)日：1994-04-26
申请号：US12491
申请日：1993-02-02
申请人： Richard B. Dingwall , Lowell W. Knapp , John H. Steele , James S. Celebi , Virgil J. Hull
发明人： Richard B. Dingwall , Lowell W. Knapp , John H. Steele , James S. Celebi , Virgil J. Hull
IPC分类号： G02F1/1335 , G02F1/1347 , G02F1/133 , G02F1/137
CPC分类号： G02F1/1347 , G02F1/133512
摘要： A liquid crystal display unit is provided which includes a primary, image-defining display and a secondary display, arranged in series with the primary display. The primary and secondary displays have equal numbers of light shutters, similarly sized and located on each display, so that when the corresponding light shutters on the primary and secondary displays are closed, substantially no light passes through the viewing side of the primary display. An opaque mask is formed on the input side of the primary display to define the shape of the image elements to be displayed. This mask covers the edges of the primary display light shutters to define the image elements display. This mask permits the primary and secondary displays to be easily aligned with each other. Color patches can be located on the light input side of the primary display light shutters so that the viewed images are in color. The use of the opaque mask to form the image elements eliminates the need to form precisely shaped color patches. Since and the mask blocks all light between light shutters, a display is provided having a true dead front. The true dead front display permits colored text displays using mimic-type electrodes to be produced. Since the secondary displays need not perform as well as the primary displays, displays which are not suitable for use as primary displays can be used as the secondary displays.
摘要翻译：提供了一种液晶显示单元，其包括与主显示器串联布置的主要，图像定义显示器和次显示器。主显示器和次显示器具有相同数量的光闸，类似尺寸并位于每个显示器上，使得当主显示器和次显示器上的对应的光闸关闭时，基本上没有光穿过主显示器的观察侧。在主显示器的输入侧形成不透明掩模，以限定要显示的图像元素的形状。该面罩覆盖主显示器光闸的边缘以定义图像元素显示。该掩模允许主显示器和次显示器彼此容易对准。色块可以位于主显示器光闸的光输入侧，使得所观看的图像是彩色的。使用不透明蒙版来形成图像元素，消除了形成精确成形的色块的需要。由于遮罩遮挡了光闸之间的所有光，所以提供了具有真实死角的显示器。真正的死前显示器允许使用模拟型电极生产彩色文本显示器。由于辅助显示器不需要与主显示器一样执行，因此不适合用作主显示器的显示器可用作辅助显示器。

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