IP Library Granted Patent US 9,164,321
Granted Patent B2
US 9,164,321 · App. 14/087,193 · Granted Oct 20, 2015

Liquid crystal display device

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Quick Facts
Patent No.
US 9,164,321
App. No.
14/087,193
Granted
Oct 20, 2015
Kind
B2
Abstract

A liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide plate arranged so as to overlap the liquid crystal display panel, an optical sheet arranged between the liquid crystal display panel and the light guide plate, a frame accommodating the light guide plate therein and facing a circumferential edge portion of the liquid crystal display panel, and an adhesive fixing the circumferential edge portion of the liquid crystal display panel to the frame. The frame includes a recess penetrating an outer side surface and an upper surface facing the circumferential edge portion of the liquid crystal display panel. The adhesive is arranged in the recess.

Claims (29)

1. A liquid crystal display device comprising:

a liquid crystal display panel; and

a backlight,

wherein

the backlight includes

a light guide plate arranged so as to overlap the liquid crystal display panel,

a frame accommodating the light guide plate therein and facing a circumferential edge portion of the liquid crystal display panel, and

an adhesive fixing the circumferential edge portion of the liquid crystal display panel to the frame,

the frame includes

an upper surface facing the circumferential edge portion of the liquid crystal display panel, the upper surface having a planar shape which includes two facing sides,

an outer side surface intersecting the upper surface at each of the two facing sides, and

a recess penetrating the upper surface and the outer side surface, formed on each of the two facing sides of the upper surface, and

the adhesive is arranged in the recess.

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

the liquid crystal display panel includes a polarizer, and

the frame is fixed to the polarizer via the adhesive.

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

the frame further includes an inner side surface on the side opposite to the outer side surface, and

the recess is formed so as to avoid penetrating the inner side surface.

4. The liquid crystal display device according to claim 1 , wherein

the recess is formed such that in a depth direction from at least one of the outer side surface and the upper surface, the size of the recess in a direction orthogonal to the depth direction decreases.

5. The liquid crystal display device according to claim 1 , wherein

the recess is formed such that in a depth direction from one surface of the outer side surface and the upper surface, the width of the recess in a direction orthogonal to the depth direction and parallel to the other surface that is different from the one surface gradually decreases.

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

the recess is formed such that in a depth direction from at least one of the outer side surface and the upper surface, the size of the recess in a direction orthogonal to the depth direction increases.

7. The liquid crystal display device according to claim 1 , wherein

the recess is formed such that in a depth direction from one surface of the outer side surface and the upper surface, the width of the recess in a direction orthogonal to the depth direction and parallel to the other surface that is different from the one surface gradually increases.

8. The liquid crystal display device according to claim 1 , wherein

the upper surface and the liquid crystal display panel are in direct contact with each other.

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 Nov 22, 2013
From: MATSUMOTO, SHOHEI; OOHIRA, EIJI
To: JAPAN DISPLAY INC.
Reel/Frame 031657/0098 →