Display device including curved display panel

• US 10,451,933 B2
• Filed: 09/26/2017
• Issued: 10/22/2019
• Est. Priority Date: 10/20/2016
• Status: Active Grant

• Current Assignee: Trivale Technologies, LLC (Vector Capital Corporation)
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Arita, Kenji, Miyayama, Takashi, Iwanaga, Hirofumi
• Primary Examiner(s): Landis, Lisa S
• Application Number:
  US15/716,025
• Publication Number:
  US 20180113349A1
• Time in Patent Office: 756 Days
• CPC Class Codes: G02F 1/133305 Flexible substrates, e.g. plastics, organic film
• CPC Class Codes: G02F 1/133317 Intermediate frames, e.g. between backlight housing and front frame
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: H05K 1/028 Bending or folding regions of flexible printed circuits H05K1/0283 takes precedence
• CPC Class Codes: H05K 1/118 specially for flexible printed circuits, e.g. using folded portions
• CPC Class Codes: H05K 1/147 at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit H05K1/148 takes precedence
• CPC Class Codes: H05K 1/189 characterised by the use of a flexible or folded printed circuit H05K3/326 takes precedence
• CPC Class Codes: H05K 2201/10128 Display
• CPC Class Codes: H05K 2201/10189 Non-printed connector
• CPC Class Codes: H05K 3/361 Assembling flexible printed circuits with other printed circuits

Abstract

Regions including a respective plurality of connectors of a relay FPC are disposed while respectively facing a plurality of planes of a lower frame formed in accordance with a curvature of a curved display panel, and a connection FPC mounted in an end portion of the display panel is connected to the connector of the relay FPC.

Claims

1. A display device comprising:

a curved display panel that displays an image;

a backlight that is disposed on an opposite side to a display surface of said curved display panel, and includes a frame provided in its inside with a light source to irradiate said curved display panel;

a first wiring board that is provided with wiring to input a signal into said curved display panel; and

a second wiring board that connects said first wiring board and an end portion of said curved display panel to each other, wherein

said first wiring board has at least one connector into which an end portion of said second wiring board is inserted, and

said frame has a plurality of flat planes formed to be aligned in a direction of a curvature of said curved display panel, such that each two adjacent flat planes are formed at an angle to one another, and said plurality of flat planes is disposed to face a region including said at least one connector of said first wiring board.

2. The display device according to claim 1, wherein

said at least one connector includes a connector insertion opening into which the end portion of said second wiring board is inserted, and said connector insertion opening and said plurality of flat planes formed in said frame are disposed to be substantially parallel.

4. The display device according to claim 1, wherein

said at least one connector includes a plurality of connectors,

said plurality of said second wiring boards and a plurality of said connectors into each of which the end portion of said second wiring board is inserted are disposed, and said plurality of flat planes corresponding to respective regions including said plurality of said connectors of said first wiring board is formed in said frame.

5. The display device according to claim 4, wherein

said first wiring board is formed in a rectangular shape in plan view corresponding to the region including said plurality of said connectors, and

said first wiring board includes a folded portion that is formed in a region facing a portion between the corresponding flat planes formed in said frame.

6. The display device according to claim 1, wherein

said frame further includes a protrusion disposed near said connector insertion opening, said protrusion corresponding to a position at which said connector insertion opening of said plurality of planes is disposed in sectional view.

7. The display device according to claim 4, wherein

said first wiring board is formed in a shape corresponding to the region including said plurality of said connectors,

a plurality of protection films is stacked on a surface of wiring formed on a base film, and

said first wiring board includes a region with a portion without said plurality of protection films in a region facing a portion between the corresponding flat planes formed in said frame.

3. A display device comprising:

a curved display panel that displays an image;

a backlight that is disposed on an opposite side to a display surface of said curved display panel, and includes a frame provided in its inside with a light source to irradiate said curved display panel;

a first wiring board that is provided with wiring to input a signal into said curved display panel; and

a second wiring board that connects said first wiring board and an end portion of said curved display panel to each other, wherein

said first wiring board has at least one connector into which an end portion of said second wiring board is inserted,

said frame has at least one plane formed in accordance with a curvature of said curved display panel, and said at least one plane is disposed to face a region including said at least one connector of said first wiring board, and

said at least one plane is formed in said frame such that an angle θ

formed by an extension line extending from the center of said at least one connector toward the center of a curvature setting curvature of said curved display panel, and said at least one connector, is set within a range of 90°

±

5°

.