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Large scale liquid crystal structures

A liquid crystal structure and liquid crystal technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of not being suitable for large displays, reducing display brightness, and difficulty in obtaining pure black and pure white color configurations. The effect of minimizing loss and reducing thickness

Inactive Publication Date: 2007-10-03
CAMBRIDGE ENTERPRISE LTD +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Especially hard to get pure black and pure white color schemes
In addition, in many applications, a polarizer is required to eliminate part of the incident light, which will reduce the brightness of the display
[0005] Furthermore, these existing approaches have been intended to provide high-resolution, high-refresh-rate displays suitable for small display applications such as mobile phone screens, PDA screens, computer monitors, and televisions, but not for displays that are visible at a distance. Large displays such as posters, announcements, billboards and signs, etc.

Method used

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  • Large scale liquid crystal structures
  • Large scale liquid crystal structures
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Examples

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Embodiment Construction

[0022] In general, the present invention provides a device structure of the type shown in FIG. 2, for example, for electronic billboards or other information displays such as machine meters shown in FIG. 3 for use in high light conditions or variable ambient light conditions. , electronic message boards or billboards. The device 200 includes: first and second LC active layers (active layer) 210, 212; a reflective base 214, wherein the active layers 210, 212 are combined with the reflective base 214, and the reflective base 214 includes three colored Reflective strips 214a, 214b, 214c, these three colored reflective strips are arranged in the transverse direction of the reflection direction (shown by arrow R), that is, in the transverse direction of the direction perpendicular to the bottom layer. The LC active layers 210, 212 include arrays of selector elements stacked on the backplane sub-pixels 214a, 214b, 214c, respectively. In particular, the LC active layers 210, 212 are...

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Abstract

A liquid crystal structure (200) comprising first and second reflective regions (214a, 214b, 214c) arranged to reflect respective first and second colours. The first and second reflective regions (214a, 214b, 214c) are disposed transversely to the direction of reflection (R). Each region includes a reflective back area and a selector (210) controllable to control light reflected from the region. Furthermore, a controllable reflector (212) is superposed over the reflective region in the direction of reflection (R) and controllable to transmit or scatter incident light.

Description

technical field [0001] The present invention relates to a liquid crystal (LC) structure, such as that used in liquid crystal displays, and billboards or other information displays (e.g., machine gauges, speech boards, military hardware) for use in high light conditions or variable ambient light conditions. This structure is used in control devices or other large displays that are visible from a distance. Background technique [0002] A known liquid crystal display is described in US patent application 20030043316, where a stacked reflective display is described, ie of the type shown schematically in FIG. 1 . In particular, display 10 includes stacked layers of guest-host liquid crystal materials 12, 14, 16, using a red / green / blue (RGB) configuration, each layer arranged to reflect a selected wavelength of incident light. Alternatively, the degree of reflection can be determined by controlling the rotation of the liquid crystal through appropriate electrodes that allow color...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1347G02F1/1335G02F1/139
CPCG02F1/1347G02F1/133514G02F1/133553G02F1/13475G02F1/13476G02F1/1391G02F2203/34
Inventor 威廉·奥尔登·克罗斯兰安东尼·伯纳德·戴维孙刚艾伦·科林·狄克逊
Owner CAMBRIDGE ENTERPRISE LTD
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