IP Library Patent Application 12081056
Patent Application
App. No. 12/081,056

Liquid crystal display device

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Quick Facts
Patent No.
US None
App. No.
12/081,056
Abstract

A LCD device includes a first substrate having a plurality of first electrodes, a second substrate having a plurality of second electrodes, the second electrodes being perpendicular to the first electrodes to define sub-pixels at intersection regions between the first and second electrodes, a reflective film between the first and second substrates, each reflective portion being positioned in a respective sub-pixel to define a reflective region and a transmission region in the respective sub-pixel, a plurality of color filters between the first and second substrates, a black matrix between the color filters, and a plurality of patterned spacers between the first and second substrates, each patterned spacer overlapping the reflective portion of the reflective film in the respective sub-pixel.

Claims (21)

1 . A liquid crystal display (LCD) device, comprising:

a first substrate having a plurality of first electrodes;

a second substrate facing the first substrate and having a plurality of second electrodes, the second electrodes being perpendicular to the first electrodes to define sub-pixels at intersection regions between the first and second electrodes;

a reflective film between the first and second substrates, the reflective film including a plurality of reflective portions, each reflective portion being positioned in a respective sub-pixel to define a reflective region and a transmission region in the respective sub-pixel;

a plurality of color filters between the first and second substrates, each color filter being in a respective sub-pixel and overlapping the reflective region and the transmission region of the respective sub-pixel;

a black matrix between the color filters;

a planarization layer between the first and second substrates;

a plurality of patterned spacers in respective unit pixels between the first and second substrates, each patterned spacer overlapping the reflective portion of the reflective film in the respective unit pixel; and

liquid crystals between the first and second substrates.

2 . The LCD device as claimed in claim 1 , further comprising first and second alignment layers on inner surfaces of the first and second substrates, respectively.

3 . The LCD device as claimed in claim 1 , wherein the color filters include red, green, and blue color filters.

4 . The LCD device as claimed in claim 3 , wherein three sub-pixels including red, green, and blue color filters define a single unit pixel.

5 . The LCD device as claimed in claim 3 , wherein the patterned spacers are in sub-pixels including green color filters and/or in sub-pixels including blue color filters.

6 . The LCD device as claimed in claim 1 , wherein the patterned spacers are on the planarization layer, the planarization layer being between the patterned spacers and the color filters.

7 . The LCD device as claimed in claim 1 , wherein the patterned spacers have a column shape.

8 . The LCD device as claimed in claim 1 , wherein each of the patterned spacers entirely overlaps the reflective portions of the reflective film in the respective unit pixel.

9 . The LCD device as claimed in claim 8 , wherein a diameter of the patterned spacer is narrower than the reflective portion of the reflective film in the respective unit pixel.

10 . The LCD device as claimed in claim 1 , wherein a reflective portion in each sub-pixel is on an upper surface of the sub-pixel, the upper surface being adjacent to the second substrate.

11 . The LCD device as claimed in claim 10 , wherein the color filters have a bent vertical cross-section.

12 . The LCD device as claimed in claim 1 , wherein the LCD device is a transflective type LCD device of a passive matrix scheme.

13 . The LCD device as claimed in claim 1 , wherein the black matrix is on the second substrate in a matrix form.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 15, 2008
From: SAMSUNG SDI CO., LTD.
To: SAMSUNG MOBILE DISPLAY CO., LTD.
Reel/Frame 021998/0771 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 10, 2008
From: SON, DONG-SOO; ITAKURA, MIKIYA
To: SAMSUNG SDI CO., LTD.
Reel/Frame 020823/0299 →