US 7,396,619 B2 · Color filter and manufacturing method therefor

Abstract

A color filter includes a transparent substrate, a black matrix formed on the transparent substrate, a plurality of banks superposed on the black matrix, and a color layer formed of R, G and B color portions. The black matrix defines a plurality of sub-pixels of the color filter. The banks and the black matrix enclose a plurality of spaces for respectively accommodating the R, G and B color portions. Wherein, a plurality of groups is defined, each group includes a plurality of sub-pixels of concolorous color portions, at least one channel is formed on the bank between adjacent sub-pixels of concolorous color portions in the group. In a manufacturing method for the color filter, the ink can flow over between the adjacent sub-pixels in a defined group and level through the channel, thus the uniformity of the color portions can be improved.

Claims30

Dependent claims

A color filter, comprising:

a transparent substrate having a surface;
a black matrix fanned on the surface of the transparent substrate to define a plurality of sub-pixels of the color filter;
a plurality of banks superposed on the black matrix, the banks and the black matrix defining a plurality of spaces;
a color layer formed of red, green and blue color portions, each of the red, green and blue color portions being accommodated in one of the spaces;
and
a plurality of groups being defined, wherein each group includes a plurality of sub-pixels of concolorous color portions, at least one channel is formed on the bank between adjacent sub-pixels of concolorous color portions in the group, each channel being configured for communicating between a pair of adjacent sub-pixels.

3 more elements

A manufacturing method for a color filter, comprising the steps of:

providing a transparent substrate having an upper surface;
forming a black matrix on the upper surface of the transparent substrate, wherein the black matrix defines a plurality of sub-pixels of the color filter;
forming a plurality of banks superposed on the black matrix, wherein a plurality of groups is defined, each group includes a plurality of sub-pixels of concolorous color portions, at least one channel is formed on the bank between adjacent sub-pixels of concolorous color portions in a group, each channel being configured for communicating between a pair of adjacent sub-pixels;
jetting ink into spaces defined by the banks via an ink jet device, wherein the ink can flow over between the adjacent sub-pixels in the each group and level through the channel;
and
solidifying the ink to form a color layer of red, green and blue color portions.

3 more elements

Dependencies are inferred from the claim text.

Color filter and manufacturing method therefor

Life of this patent

Color filter and manufacturing method therefor

Life of this patent

Abstract

Claims30