[미국특허]
Reflector, reflective liquid crystal display incorporating the same and method for fabricating the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G02F-011/335
G02F-011/339
출원번호
US-0763484
(1996-12-11)
우선권정보
JP-0275150 (1996-10-17)
발명자
/ 주소
Tsuda Kazuhiko,JPX
Taniguchi Koji,JPX
Shiomi Makoto,JPX
출원인 / 주소
Sharp Kabushiki Kaisha, JPX
대리인 / 주소
Conlin
인용정보
피인용 횟수 :
82인용 특허 :
19
초록▼
A reflector including a substrate and a thin metal film is provided. The substrate defines a plurality of randomly arranged, curved, surface deformity portions, each having an asymmetric cross section. Typically, the surface deformity/substrate structure is formed by creating curved pieces of resist
A reflector including a substrate and a thin metal film is provided. The substrate defines a plurality of randomly arranged, curved, surface deformity portions, each having an asymmetric cross section. Typically, the surface deformity/substrate structure is formed by creating curved pieces of resist material on a substrate, and thereafter, tilting and heating the substrate. Alternatively, a photoresist process utilizing an ion, or an electron beam without heating, can be used. The metal film is coated onto the surface of the substrate and onto the curved, surface deformities located thereon, such that light incident from a given direction is reflected over a wide range, but most intensely in particular directions. Further, a liquid crystal display is provided in which the reflector just mentioned is used as a lower substrate. An upper glass substrate is provided, and a liquid crystal display medium is interposed between the reflector and the upper glass substrate. In some embodiments, the liquid crystal display medium includes a matrix of polymer walls formed either by light irradiation using a mask, or by cooling a mixture of liquid crystal material, and a polymerizable precursor to separate phases prior to light irradiation. In addition, a phase plate, a polarizer, an insulating layer, display electrodes and/or color filters may be utilized in association with the liquid crystal display. Also, the liquid crystal material, the surface of the reflector substrate, and/or the thin metallic film may be divided into areas corresponding to individual pixels.
대표청구항▼
[ What is claimed is:] [1.] A reflector comprising at least a substrate and a thin reflective metal film, wherein:a plurality of surface deformity portions, each defining a curved portion, are located between the substrate and the thin reflective metal film, each of said curved portions having an as
[ What is claimed is:] [1.] A reflector comprising at least a substrate and a thin reflective metal film, wherein:a plurality of surface deformity portions, each defining a curved portion, are located between the substrate and the thin reflective metal film, each of said curved portions having an asymmetric cross section; and,the surface deformity portions are randomly arranged on the substrate, such that incident light from one direction is reflected by said thin reflective metal film over a wide range, with the greatest intensity thereof being directed toward particular directions.
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