Panel for display device with light blocking on blue color filter and liquid crystal display
View Patent ↗Panels for a display device, a liquid crystal display, and methods to manufacture the same are disclosed. A light blocking member on a first panel advantageously overlaps a transistor and an opaque element on a second panel for advantageously reducing or eliminating light leakage, thereby allowing for sharp viewing contrast.
1. A liquid crystal display having a plurality of pixels representing a different color, comprising:
a first panel including:
a first insulating substrate;
a transistor formed on the first insulating substrate;
a second panel including:
a second insulating substrate;
a light blocking member formed on the second insulating substrate overlapping the transistor, the light blocking member being disposed in a blue color pixel, light blocking members being absent in the other color pixels representing a different color from the blue color pixel; and
a liquid crystal layer between the first panel and the second panel.
2. The liquid crystal display of claim 1 , wherein the light blocking member overlaps a pixel electrode.
3. A display device panel having a plurality of pixels representing different primary colors, comprising:
an insulating substrate; and
a light blocking member having an inclined edge profile of less than about 30 degrees,
wherein the light blocking member is disposed in a blue color pixel, light blocking members being absent in the other color pixels having a different color from the blue color pixel.
4. The panel of claim 3 , wherein the insulating substrate comprises transparent glass.
5. The panel of claim 3 , wherein the light blocking member comprises organic material containing black pigment.
6. The panel of claim 3 , wherein the light blocking member has a thickness between about 1.5 microns and about 3.0 microns.
7. The panel of claim 3 , wherein the light blocking member is disposed in a blue color pixel formed on the insulating substrate.
8. The panel of claim 3 , further comprising:
an electrode formed on the light blocking member and the insulting substrate; and
a spacer formed on the electrode and overlapping the light blocking member.
9. The panel of claim 8 , wherein the electrode comprises a transparent conductive material selected from the group consisting of indium tin oxide and indium zinc oxide.
10. The panel of claim 8 , wherein a common voltage is applied to the electrode.
11. The panel of claim 8 , further comprising an alignment layer on the spacer and the electrode.
12. The display device of claim 3 , wherein the light blocking member overlaps a pixel electrode.