IP Library Granted Patent US 9,372,365
Granted Patent B2
US 9,372,365 · App. 14/452,684 · Granted Jun 21, 2016

Liquid crystal display device

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Quick Facts
Patent No.
US 9,372,365
App. No.
14/452,684
Granted
Jun 21, 2016
Kind
B2
Abstract

A liquid crystal display device is provided in which color unevenness can be reduced and inhibited in the peripheral display area even when the display device has a narrow frame. In the liquid crystal display device, liquid crystal sandwiched between a TFT substrate and a CF substrate and sealed by a seal is disposed in a frame portion. The CF substrate has a BM, a color resist film, an OC, an alignment film, and a wall that inhibits the alignment film from expanding outward. In the area where the wall is disposed, the BM and color resist film on the CF substrate are removed.

Claims (23)

1. A liquid crystal display device, comprising:

a display area and a frame portion surrounding the display area;

a first substrate, a second substrate, and liquid crystal sandwiched between the first substrate and the second substrate and sealed by a seal being disposed in the frame portion;

wherein the second substrate has a black matrix, a color filter, an overcoat are sequentially stacked, an alignment film disposed to the liquid crystal side of the overcoat, and a wall that inhibits the alignment film from expanding outwardly toward the display area,

wherein the seal is disposed over the wall,

and wherein at least one of layers of the black matrix, the color filter, and the overcoat is partially removed in an area where the wall is disposed, and a distance from the wall in a portion for the partial removal to the first substrate is larger than a distance from the wall provided other than the portion for the partial removal to the first substrate.

2. The liquid crystal display device according to claim 1 , wherein the removed layers are the black matrix and the color filter.

3. The liquid crystal display device according to claim 2 , wherein the first substrate has a light shielding metal film formed to cover an area for the removed black matrix.

4. The liquid crystal display device according to claim 1 , wherein the removed layers are the black matrix, the color filter, and the overcoat.

5. The liquid crystal display device according to claim 4 , wherein the first substrate has a light shielding metal film formed to cover an area for the removed black matrix.

6. The liquid crystal display device according to claim 1 , wherein the removed layers are the color filter and the overcoat.

7. The liquid crystal display device according to claim 1 , wherein the removed layer is the color filter.

8. The liquid crystal display device according to claim 1 , wherein the wall is formed in the display area and formed of an identical material with a plurality of columns that define a distance between the first substrate and the second substrate.

9. A liquid crystal display device, comprising:

a display area and a frame portion surrounding the display area;

a first substrate, a second substrate, and liquid crystal sandwiched between the first substrate and the second substrate and sealed by a seal being disposed in the frame portion;

wherein the second substrate has a black matrix, an overcoat are sequentially stacked, an alignment film disposed to the liquid crystal side of the overcoat, and a wall that inhibits the alignment film from expanding outwardly toward the display area,

wherein the seal is disposed over the wall,

and wherein the black matrix or the overcoat on the second substrate is partially removed in an area where the wall is disposed, and a distance from the wall in a portion for the partial removal to the first substrate is larger than a distance from the wall provided other than the portion for the partial removal to the first substrate.

10. The liquid crystal display device according to claim 9 , wherein the removed layer is the black matrix.

11. The liquid crystal display device according to claim 10 , wherein the first substrate has a light shielding metal film formed to cover an area for the removed black matrix.

12. The liquid crystal display device according to claim 9 , wherein the removed layer is the overcoat.

13. The liquid crystal display device according to claim 9 , wherein the wall is formed in the display area and formed of an identical material with a plurality of columns that define a distance between the first substrate and the second substrate.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2025
From: JAPAN DISPLAY INC.
To: MAGNOLIA WHITE CORPORATION
Reel/Frame 072130/0313 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 6, 2014
From: KURAMOTO, YUKI
To: JAPAN DISPLAY INC.
Reel/Frame 033473/0827 →