JPH10233191A5

JPH10233191A5 -

Info

Publication number: JPH10233191A5
Application number: JP1997032240A
Authority: JP
Filing date: 1997-02-17
Publication date: 2005-01-06

Description

【発明の名称】反射型ディスプレイ [Name of invention] Reflective display

【０００６】
【課題を解決するための手段】
すなわち本発明は、少なくとも光を反射する部分と、１９０〜７８０ｎｍの領域のいずれかの外光によって発光する蛍光物質を含む部分とが層状に積層され、３８０〜８００ｎｍの任意の領域で発光する面状発光体が、１９０〜７８０ｎｍの領域のいずれかの光を透過させることが可能な光シャッター機構の背面に設けられたことを特徴とする反射型ディスプレイである。[0006]
[Means for solving the problem]
In other words, the present invention is a reflective display characterized in that at least a portion that reflects light and a portion containing a fluorescent material that emits light in response to external light in any region of 190 to 780 nm are layered together , and a surface light-emitting element that emits light in any region of 380 to 800 nm is provided on the back of an optical shutter mechanism that can transmit any light in the region of 190 to 780 nm .

【０００７】
【発明の実施の形態】
本発明の要点は、反射板からの反射光だけでは不十分な光量を可視光を発する蛍光物質を含む部分が補う事によりディスプレイとして実用的な明るさを出すことにある。蛍光物質を発光させる方法としては、外光によって光励起する方法、または外光によって光励起する方法および外部から微弱な電力を供給する方法によって達成させる。代表的な構成を図１に示す。液晶素子１の前面から進入した光は、反射板３で反射されて再び素子の外に出ていく過程の他に入射光および／または反射光が蛍光物質を含む部分２に吸収されてこれが蛍光物質を発光させる過程、および必要により電気エネルギーによって蛍光物質を発光させる過程を加えることにより従来の反射板のみの場合と比較してより光量の多い、即ち明るい反射型液晶ディスプレイを提供できるものである。[0007]
[Embodiments of the Invention]
The gist of this invention is that the amount of light reflected from the reflector alone is insufficient, and the portion containing a fluorescent material that emits visible light compensates for this, thereby achieving practical brightness for a display. The fluorescent material can be excited by photoexcitation with external light , or by photoexcitation with external light and a weak external power supply. A typical configuration is shown in Figure 1. Light entering the front of the liquid crystal element 1 undergoes a process in which it is reflected by the reflector 3 and then exits the element again. In addition, the incident light and/or reflected light is absorbed by the portion containing the fluorescent material 2, causing the fluorescent material to emit light, and, if necessary , electrical energy is used to cause the fluorescent material to emit light. This adds another process to the process, providing a reflective liquid crystal display that emits more light, i.e., a brighter display, than a conventional display using only a reflector.

Claims

A reflective display characterized in that at least a light-reflecting portion and a portion containing a fluorescent material that emits light in response to external light in any region of 190 to 780 nm are layered together , and a surface light-emitting element that emits light in any region of 380 to 800 nm is provided on the back of an optical shutter mechanism that can transmit any light in the region of 190 to 780 nm .

2. A reflective display according to claim 1, wherein the fluorescent material absorbs ultraviolet light and emits visible light.

3. A reflective display according to claim 1, wherein the portion containing the fluorescent material also serves as a spectral filter.

4. A reflective display according to claim 3 , wherein the spectral filter absorbs only specific wavelengths of visible light other than the emission wavelength of the fluorescent material.

5. A reflective display according to claim 1, wherein the portion containing the fluorescent material is formed in a stripe or mosaic shape and emits light in two or more different wavelength regions.