Liquid crystal panel and projection liquid crystal display apparatus having particular light-shielding film
View Patent ↗A liquid crystal panel includes a first substrate having pixels defining a pixel region, and pixel electrodes and a common electrode disposed in the pixel region on the first substrate. The pixel electrodes are disposed for the respective pixels. The liquid crystal panel also includes a second substrate opposing the first substrate and a light-shielding film disposed on the second substrate. The light-shielding film includes a frame portion surrounding the pixel region and a middle portion disposed at least in the pixel region. The middle portion is made of a material having a higher specific resistance than the frame portion. The frame portion is made of a material having a higher light-shielding property than the middle portion.
1. A liquid crystal panel comprising:
a first substrate having pixels defining a pixel region;
pixel electrodes and a common electrode disposed in the pixel region on the first substrate, the pixel electrodes being disposed for the respective pixels;
a second substrate opposing the first substrate; and
a light-shielding film disposed on the second substrate, the light-shielding film including a frame portion surrounding the pixel region and a middle portion disposed at least in the pixel region, the middle portion being made of a material having a higher specific resistance than the frame portion, the frame portion being made of a material having a higher light-shielding property than the middle portion.
2. The liquid crystal panel according to claim 1 , wherein the frame portion and the second substrate are made of an inorganic material and are in contact with each other.
3. The liquid crystal panel according to claim 1 , wherein the frame portion is disposed at least a distance equivalent to one pixel away from the outermost pixels.
4. The liquid crystal panel according to claim 1 , wherein the frame portion is made of a material having a higher thermal conductivity than the middle portion.
5. The liquid crystal panel according to claim 1 , further comprising an optically transparent electroconductive film on the surface of the second substrate opposite the surface having the light-shielding film.
6. The liquid crystal panel according to claim 1 , wherein the pixel electrode and the common electrode are disposed with an insulating layer therebetween, and one electrode disposed above the other has a slit.
7. A projection liquid crystal display apparatus comprising:
the liquid crystal panel as set forth in claim 1 ; and
a light source that irradiates the liquid crystal panel.