IP Library Granted Patent US 9,423,645
Granted Patent B2
US 9,423,645 · App. 14/194,037 · Granted Aug 23, 2016

Liquid crystal display device

Inventors: Ryutaro Oke (Osaka, JP); Keiichirou Ashizawa (Osaka, JP); Hiroaki Iwato (Osaka, JP)
Assignee: Panasonic Liquid Crystal Display Co., Ltd.
G02F1/133512G02F1/133514G02F2001/133388
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Quick Facts
Patent No.
US 9,423,645
App. No.
14/194,037
Granted
Aug 23, 2016
Kind
B2
Abstract

Provided is a liquid crystal display device, including: a TFT substrate including a pixel electrode; a liquid crystal layer provided on the TFT substrate; and a color filter substrate provided on the liquid crystal layer. The color filter substrate includes a light non-transmitting layer made of a material that limits transmission of light. The light non-transmitting layer includes: a display region including a hole portion filled with a color resist that transmits light; and a frame-shaped non-display region surrounding the display region. The frame-shaped non-display region has a slit formed in one side thereof, along the one side, the slit passing through the light non-transmitting layer. The slit is filled with a member made of the same material as a material of the color resist.

Claims (24)

1. A liquid crystal display device, comprising:

a TFT substrate comprising a pixel electrode;

a liquid crystal layer provided on the TFT substrate; and

a color filter substrate provided on the liquid crystal layer,

wherein the color filter substrate comprises a light non-transmitting layer made of a material that limits transmission of light,

wherein the light non-transmitting layer includes:

a display region including a hole portion filled with a color resist that transmits light; and

a frame-shaped non-display region surrounding the display region,

wherein the frame-shaped non-display region has a groove formed in one side thereof, along the one side, to a laterally interior side of a seal member, the groove passing through the light non-transmitting layer, and

wherein the groove is filled with a member made of the same material as a material of the color resist.

2. The liquid crystal display device according to claim 1 ,

wherein the TFT substrate further comprises wiring connecting a transistor that controls a potential of the pixel electrode and a driver circuit that drive the transistor to each other, and

wherein the one side is opposed to a region of the TFT substrate in which the wiring is formed.

3. The liquid crystal display device according to claim 1 ,

wherein the color resist that fills the hole portion of the display region comprises a blue color resist that transmits light and emits blue color, and

wherein the member that fills the groove comprises a portion made of the same material as a material of the blue color resist that emits blue color.

4. The liquid crystal display device according to claim 3 ,

wherein the color resist that fills the hole portion of the display region comprises a plurality of color resists that transmit light and emit a plurality of kinds of colors including blue, respectively, and

wherein the member that fills the groove is formed by overlapping a plurality of kinds of color resists including the blue color resist that emits blue color.

5. The liquid crystal display device according to claim 1 , wherein the driver circuit is a circuit that supplies a signal to a gate terminal of the transistor.

6. The liquid crystal display device according to claim 1 ,

wherein the non-display region of the color filter is made of a light non-transmitting member, and

wherein a difference between a thickness of the member that fills the groove and a thickness of the color resist that fills the hole portion is equal to or less than a predetermined value.

7. The liquid crystal display device according to claim 1 , further comprising a layer of a color resist formed at a predetermined position of the display region, the layer of the color resist having the same structure as a structure of the color resist that fills the groove.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 18, 2023
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
To: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Reel/Frame 064292/0775 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 26, 2014
From: OKE, RYUTARO; ASHIZAWA, KEIICHIROU; IWATO, HIROAKI
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 032960/0929 →
Priority Claims (1)
JP 2013-163263 · Aug 6, 2013 · national
Continuity (1)
Related Publication 20150042929A1 · Feb 12, 2015