IP Library Granted Patent US 9,864,226
Granted Patent B2
US 9,864,226 · App. 14/979,849 · Granted Jan 9, 2018

Liquid crystal display device

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Quick Facts
Patent No.
US 9,864,226
App. No.
14/979,849
Granted
Jan 9, 2018
Kind
B2
Abstract

In a liquid crystal display device, there is provided a liquid crystal display panel in which a TFT substrate and a counter substrate are bonded together by a sealing material, with a liquid crystal sandwiched between the substrates. Further, a front window with a black border print formed in the periphery is bonded to the liquid crystal display panel by a UV curable resin. The liquid crystal is filled by a drop method. The thickness of the TFT substrate and the counter substrate is reduced to about 0.2 mm by polishing. An inner end of the black border print of the front window is inside an inner end of the sealing material, to prevent the counter substrate of the liquid crystal display panel from being deformed by stress generated in the curing of the UV curable resin, thereby preventing yellow discoloration in the periphery of the display area.

Claims (31)

1. A liquid crystal display device comprising:

a front window;

a liquid crystal display panel attached to the display panel comprising

a TFT substrate,

a counter substrate,

a liquid crystal disposed between the TFT substrate and the counter substrate,

a sealing material disposed between the TFT substrate and the counter substrate and sealing the liquid crystal,

a black border formed in the periphery of the front window,

a driver disposed on the TFT substrate and

a resin adhering to the front window;

wherein, in a plan view, a center of the display area is closer to an inner end portion of the sealing material than to an inner end portion of the black border;

wherein the resin overlaps with the sealing material and the black border in a plan view and

wherein, in a plan view, the black border is disposed above the driver.

2. The liquid crystal display device of claim 1 ,

wherein the resin is thicker or as thick as the sealing material.

3. The liquid crystal display device of claim 1

wherein, in the region which is inside of the inner end portion of the black border in a plan view, the thickness of the resin in a center portion is thinner than the thickness of the resin in outside of the center portion.

4. The liquid crystal display device of claim 1 ,

wherein the black border has four sides, and the side which overlaps the driver is the widest in a plan view.

5. The liquid crystal display device of claim 1 comprising:

a lower polarization plate attached to the TFT substrate; and

an upper polarization plate attached to the counter substrate;

wherein the front window is bonded to the upper polarization plate by a resin.

6. The liquid crystal display device of claim 1 comprising:

a first flexible wiring substrate on the TFT substrate,

wherein, in a plan view, the black border is disposed above the first flexible wiring substrate.

7. The liquid crystal display device of claim 6 comprising:

a second flexible wiring substrate on the TFT substrate adjacent to the first flexible wiring substrate,

wherein, in a plan view, the black border is disposed above the second flexible wiring substrate.

8. The liquid crystal display device of claim 1 ,

wherein an outer end portion of the sealing material overlaps with the resin and the black border in a plan view.

Assignments (3)
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 Dec 29, 2015
From: TANABE, SHINJI; KOBAYASHI, SETSUO; ISHII, KATSUHIKO; ISHII, AKIRA; SENTO, KIYOSHI
To: JAPAN DISPLAY EAST INC.
Reel/Frame 037374/0728 →
CHANGE OF NAME Recorded Dec 29, 2015
From: JAPAN DISPLAY EAST INC.
To: JAPAN DISPLAY INC.
Reel/Frame 037396/0081 →