IP Library Granted Patent US 10,411,208
Granted Patent B2
US 10,411,208 · App. 15/671,400 · Granted Sep 10, 2019

Display device

Inventors: Naohisa Andou (Minato-ku, JP); Kazuto Tsuruoka (Minato-ku, JP)
Assignee: Japan Display Inc.
H01L51/107H01L27/3248H01L51/0097H01L27/32H01L2251/5338Y02E10/549
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Quick Facts
Patent No.
US 10,411,208
App. No.
15/671,400
Granted
Sep 10, 2019
Kind
B2
Abstract

A display device includes: a spacer; a flexible substrate having flexibility, the flexible substrate being provided with a display area for performing image display, a picture-frame area, a bent area, and a terminal area including a terminal, the display area, the picture-frame area, the bent area, and the terminal area being arranged in this order, the terminal area being disposed on a rear surface side of the spacer due to the bent area being bent so as to follow the shape of the spacer; and a reinforcing film including a first reinforcing portion attached to the rear surface side of the display area, a second reinforcing portion attached to a display surface side of the terminal area, and a bent reinforcing portion attached to an inner surface side of the bent area at a portion in a width direction of the flexible substrate.

Claims (21)

1. A display device comprising:

a spacer;

a flexible substrate having flexibility, the flexible substrate being provided with a display area for performing image display, a picture-frame area, a bent area, and a terminal area including a terminal, the display area, the picture-frame area, the bent area, and the terminal area being arranged in this order, the terminal area being disposed on a rear surface side of the spacer due to the bent area being bent so as to follow a shape of the spacer; and

a first reinforcing film including a first reinforcing portion attached to a rear surface side of the display area, a second reinforcing portion attached to a display surface side of the terminal area, and a bent reinforcing portion attached to an inner surface side of the bent area, wherein

in a first cross sectional view in a thickness direction of the flexible substrate through the display area, the first reinforcing portion and the second reinforcing portion are separated by the bent area, and

in a second cross sectional view in a thickness direction of the flexible substrate through the picture-frame area, the first reinforcing film is continuously formed from the first reinforcing portion to the second reinforcing portion via the bent reinforcing portion.

2. The display device according to claim 1 , wherein

the bent reinforcing portion is provided at both edges in the width direction of the flexible substrate.

3. The display device according to claim 1 , further comprising:

an IC driver on a rear surface side of the terminal area; and

a flexible circuit board connected to the terminal on the rear surface side of the terminal area.

4. The display device according to claim 1 , wherein

the spacer includes a guide portion that guides a bend of the bent area, a first bottom surface recessed from the guide portion due to a formation of a first step, a second bottom surface recessed from the guide portion due to a formation of a second step, and a third bottom surface that is a same surface as the first bottom surface and the second bottom surface and has a shape following the guide portion, and

the first reinforcing portion is provided on the first bottom surface, the second reinforcing portion is provided on the second bottom surface, and the bent reinforcing portion is provided on the third bottom surface.

5. The display device according to claim 4 , wherein

the first step and the second step are formed at different positions in a direction in which the flexible substrate extends and contracts due to bending.

6. The display device according to claim 4 , wherein

in the second cross sectional view, the first reinforcing portion is provided on the first bottom surface, the second reinforcing portion is provided on the second bottom surface, and the bent reinforcing portion is provided on the third bottom surface, and

in the first cross sectional view, the first reinforcing portion is provided on the first bottom surface, the second reinforcing portion is provided on the second bottom surface, and the bent reinforcing portion is not provided on the third bottom surface so that the guide portion is in contact with the flexible substrate.

7. The display device according to claim 1 , further comprising a second reinforcing film attached to a display surface side of the display area, wherein

an edge portion of the first reinforcing portion and an edge portion of the second reinforcing film are disposed at different positions in a direction in which the flexible substrate extends and contracts due to bending.

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 8, 2017
From: ANDOU, NAOHISA; TSURUOKA, KAZUTO
To: JAPAN DISPLAY INC.
Reel/Frame 043228/0600 →
Priority Claims (1)
JP 2016-166659 · Aug 29, 2016 · national
Continuity (1)
Related Publication 20180062095A1 · Mar 1, 2018