IP Library › Granted Patent US 8,253,893
Granted Patent B2
US 8,253,893 · App. 12/711,819 · Granted Aug 28, 2012

Transflective liquid crystal display device having a color filter and method for fabricating thereof

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Quick Facts
Patent No.
US 8,253,893
App. No.
12/711,819
Granted
Aug 28, 2012
Kind
B2
Abstract

A color filter substrate for a liquid crystal display device includes a base substrate having a transmissive portion and a reflective portion. The transmissive portion has a groove, a color filter layer on the substrate, and a black matrix on the color filter layer.

Claims (18)

1. A color filter substrate for a liquid crystal display device, comprising:

a base substrate having a plurality of first regions and a plurality of second regions;

a black matrix on the base substrate;

a plurality of buffer patterns at each of the plurality of second regions except the first regions, one of the plurality of buffer patterns covering an entire of one of the second regions and having concave portions at the one of the second regions; and

a color filter layer at the first and second regions.

2. The color filter substrate according to claim 1 , wherein the plurality of buffer patterns are formed by selectively removing the base substrate.

3. The color filter substrate according to claim 2 , wherein the base substrate is made of glass.

4. The color filter substrate according to claim 1 , wherein the plurality of buffer patterns are formed by depositing and selectively removing a transparent material.

5. The color filter substrate according to claim 4 , wherein the plurality of buffer patterns are formed of one of benzocyclobutene, acrylic resin and silicon nitride.

6. The color filter substrate according to claim 1 , wherein the plurality of buffer patterns have a uniform pitch.

7. The color filter substrate according to claim 6 , wherein the pitch is within a range of about 14 to 45 micrometers.

8. The color filter substrate according to claim 1 , wherein a bottom surface of the plurality of the buffer patterns is located higher than a top surface of the first region of the base substrate.

9. A color filter substrate for a liquid crystal display device, comprising:

a base substrate having a plurality of first regions and a plurality of second regions;

a black matrix on the base substrate;

a plurality of buffer patterns at each of the plurality of second regions, one of the plurality of buffer patterns covering an entire of one of the second regions and having concave portions at the one of the second regions; and

a color filter layer at the first and second regions,

wherein the color filter at the first region is thicker than that at the second region.