Alps Electric Co., Ltd.

Tetsushi Tanada

Mitsuru Kano

Mitsuo Ohizumi

Masao Ohkita

Katsumasa Yoshii

Tatsuya Moriike

Tomomasa Takatsuka

Akito Miura

Koichi Moue

Hiroyasu Miyata

A reflector includes a heat-embossed layer having a reflective surface having a plurality of recesses, a highly reflective film laminated on the heat-embossed layer and having the reflective surface, and a moisture-proof base material laminated on the opposite side of the heat-embossed layer to the reflective surface. A liquid crystal display panel includes the reflector. The reflector may include an embossed layer having a reflective surface having a plurality of recesses, and an embossed base separable from the embossed layer and disposed on the opposite side of the embossed layer to the reflective surface.

Reflector and liquid crystal display panel

In a liquid crystal display, first and second substrates are provided opposing each other with a liquid crystal layer held between them, the outer surface of the first substrate serves as a light scattering surface having a light scattering characteristic, and a reflector including an irregular reflection surface is provided on the light scattering surface so that the reflection surface is on the light scattering surface side.

LCD with irregular reflection surface reflector and light scattering element

A liquid crystal display includes a pair of substrates which oppose each other with a liquid crystal layer therebetween; a light source provided on the exterior of one of the substrates; and at least an organic film, a metallic reflection film, an overcoat film, an electrode layer, and an alignment film formed on the inner face of one of the substrates. Many concaves are contiguously formed on a surface of the organic film, the inner surface of each concave constituting a part of a spherical surface. The metallic reflection film has a thickness of 80 to 500 &#x212b;. A transflector and a liquid crystal display including the transflector are also disclosed.

Transflective liquid crystal display with backlight and reflection film

A liquid crystal display includes a liquid crystal cell including a first transparent substrate and a second substrate, and a reflector attached to the outer surface of the first transparent substrate with a bonding layer therebetween. A first retarder is disposed on the outer surface of the second transparent substrate, a second retarder is disposed on the first retarder, and a polarizer is disposed on the second retarder. The reflector includes a resin substrate having an irregular surface and a metal reflection layer also having an irregular surface that corresponds to the irregular surface of the reflector. The reflector is attached to the liquid cell so that the metal reflector layer faces the first transparent substrate.

Liquid crystal display having reflector outside liquid crystal cell

The invention provides a liquid crystal display apparatus having a flexible substrate that realizes the bright and high quality display. A liquid crystal display apparatus has a liquid crystal layer interposed between a pair of flexible substrates that face each other, and a plurality of concave faces having a spherical inner surface are formed continuously on the surface of the substrate that faces the liquid crystal layer side.

Liquid crystal display apparatus having flexible substrate and concave faces

A liquid crystal display device has a pair of transparent substrates facing each other with a liquid crystal layer therebetween. First and second phase difference plates and a first polarizing plate are formed sequentially on one of the transparent substrates, while a reflector, a third phase difference plate, and a second polarizing plate are formed sequentially on the other of the transparent substrates. The reflector is a metal reflection film on a base material with concave portions formed thereon. The metal reflection film includes a plurality of concave surfaces corresponding to the concave portions that face the transparent substrate. The thickness of the metal reflection film is within the range of 5 to 50 nm.

SEMITRANSPARENT REFLECTIVE LIQUID CRYSTAL DISPLAY DEVICE HAVING DECREASED NUMBER OF PHASE DIFFERENCE AND POLARIZING PLATES AND HAVING REFLECTOR WITH CONCAVE PORTIONS ON OUTER SURFACE OF TRANSPARENT SUBSTRATE

External reflective type liquid crystal display having substrate with light scattering surface and reflector with irregular surface

A reflection type liquid crystal display device has phase difference plates and a polarizer provided on an outer side of a liquid crystal cell. The liquid crystal layer is twisted by 240 to 250 degrees with other characteristics including: &Dgr;nd for the crystal cell of 600 nm-800 nm, &Dgr;nd for the first phase difference plate of 100 nm-200 nm, and the lagging axis &ggr; of 60 to 100 degrees, &Dgr;nd for the second phase difference plate of 300 nm-500 nm and a lagging axis &agr; of 90 to 140 degrees, and an absorption axis &agr; of the polarizer of 20 to 70 degrees or 110 to 160 degrees.

Reflection type liquid crystal display device with high-brightness bright display and high contrast

A liquid crystal display includes a pair of substrates which oppose each other with a liquid crystal layer therebetween; a light source provided on the exterior of one of the substrates; and at least an organic film, a metallic reflection film, an overcoat film, an electrode layer, and an alignment film formed on the inner face of one of the substrates. Many concave portions are contiguously formed on a surface of the organic film, the inner surface of each concave portion constituting a part of a spherical surface. The metallic reflection film has a thickness of 80 to 500 &angst;. A transflector and a liquid crystal display including the transflector are also disclosed.

A brighter and whiter reflector provides high reflection efficiency over a wide range of angles. An indenting tool is pressed against the surface of a matrix base material; the pressing operation is repeated while changing the position of the indenting tool on the surface of the base material for the matrix to successively form many pits, the inner surfaces of which are shaped like partial spheres, on the mold surface of the matrix base material so as to provide it as the matrix for forming the reflector. Then, a transfer mold having a mold surface which has a reversed pattern of the pits and projections of the mold surface of the matrix is made, and the mold surface of the transfer mold is transferred to the surface of the base material for the reflector to provide a reflector ( ). Pits ( ) of the reflector ( ) are formed so that the depths the pits ( ) range from 0.1 &mgr;m to 3 &mgr;m, the tilt angles of the inner surfaces of the pits ( ) are distributed in the range of &minus;18 degrees to &plus;18 degrees, and the pitches between adjoining pits ( ) range from 5 &mgr;m to 50 &mgr;m. A reflection type liquid crystal display device in accordance with the present invention is equipped with the reflector ( ).

Reflector having pits and projection on a surface thereof, manufacturing method for the same, and reflection-type liquid crystal display device employing the reflector

Reflector having pits and projections on a surface thereof, manufacturing method for the same, and reflection type liquid crystal display device employing the reflector

A reflector includes a reflecting surface provided on a display cell, and fine concave surfaces are formed on the surface of the reflector. When the cross sections of the concave surfaces are formed in the shape of circular curves, the frequency of tilt angles &thgr;1, &thgr;2, . . . &thgr;n formed between tangents to the concave surfaces and horizontal lines H can be set to predetermined angle range &thgr;1 to &thgr;n, an angle range in which luminance of reflected light increases can be determined, and the reflected light can be allowed to have a directivity within the angle range. By designing &thgr;1 and &thgr;n in accordance with an effective viewing angle of the display cell, display contrast can be increased.

Growing community of inventors

Fukushima-ken, Japan

Tetsushi Tanada