Liquid crystal display and electronic apparatus
View Patent ↗A liquid crystal display includes an element substrate, pixel electrodes and a common electrode that are formed on the element substrate, a counter substrate, a liquid crystal layer that is formed between the counter substrate and the element substrate, first and second polarizing plates that are provided on an emitting side of display light and an opposite side, respectively, and a retardation film that is provided in a reflective region to be disposed between the liquid crystal layer and the first polarizing plate. Each pixel has a transmissive region where transmissive display light is emitted and a reflective region where reflective display light is emitted. The retardation of the retardation film has smaller temperature dependency than the retardation of the liquid crystal layer.
1. A liquid crystal display, comprising:
an element substrate;
a pixel electrode that is formed at each pixel of the element substrate;
a common electrode that is formed on the element substrate, an electric field being formed between the pixel electrodes and the common electrode;
a counter substrate that is arranged to face the element substrate;
a liquid crystal layer that is formed between the counter substrate and the element substrate;
first and second polarizing plates that are provided on an emitting side of display light passing through the liquid crystal layer and an opposite side, respectively; and
a retardation film that is disposed between the liquid crystal layer and the first polarizing plate, wherein:
the pixel has a transmissive region where transmissive display light is emitted and a reflective region where reflective display light is emitted;
the retardation of the retardation film has smaller temperature dependency than that of the liquid crystal layer; and
one of the pixel electrode and the common electrode is formed on the element substrate facing the liquid crystal layer, and has a plurality of slit-shaped openings, which are formed within each region of the pixel at predetermined intervals.
2. The liquid crystal display according to claim 1 ,
wherein the counter substrate is arranged on the emitting side of display light, and
the retardation film is formed on a surface of the counter substrate facing the liquid crystal layer.
3. The liquid crystal display according to claim 1 ,
wherein, in the reflective region, a light reflecting layer is formed on a surface of the element substrate facing the liquid crystal layer, and
the retardation film is formed to overlap the light reflecting layer in plan view.
4. The liquid crystal display according to claim 1 ,
wherein the pixel electrode is formed closer to the liquid crystal layer than the common electrode.
5. The liquid crystal display according to claim 1 ,
wherein the common electrode is formed closer to the liquid crystal layer than the pixel electrode.
6. The liquid crystal display according to claim 1 ,
wherein the pixel electrode and the common electrode are formed in the same layer in the element substrate and have a comb shape, and the tooth portions of the comb shape are arranged in alternate relationship to face each other.
7. An electronic apparatus comprising the liquid crystal display according to claim 1 .
8. The liquid crystal display according to claim 1 ,
wherein the retardation film is formed of a liquid crystal polymer, and the retardation of the retardation film is set at a ½ wavelength.
9. The liquid crystal display according to claim 1 ,
wherein the retardation film is formed of a liquid crystal polymer, and a nematic phase transition temperature of the liquid crystal polymer is 130° C.