IP Library Granted Patent US 7,525,627
Granted Patent B2
US 7,525,627 · App. 11/749,198 · Granted Apr 28, 2009

Display device

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Quick Facts
Patent No.
US 7,525,627
App. No.
11/749,198
Granted
Apr 28, 2009
Kind
B2
Abstract

A display device includes a display panel, a lower frame arranged in the rear of the display panel when viewed from a viewer, and at least one printed circuit board arranged on or above a flat plane of the lower frame. In this display device, the lower frame carries plural positioning projections. They are located outside of a region, where the printed circuit board is arranged, at positions facing each other with the interposition of the region, and arise from the flat plane of the lower frame toward the printed circuit board. Distal portions of the positioning projections protrude from, and bend away from the printed circuit board arranged on or above the lower frame.

Claims (66)

1. A display device comprising:

a display panel;

a lower frame arranged in the rear of the display panel when viewed from a viewer; and

at least one printed circuit board arranged on or above a flat plane of the lower frame,

wherein the lower frame carries plural positioning projections, the positioning projections located outside of a region where the printed circuit board is arranged at plural positions facing each other with the interposition of the region, and the positioning projections arising from the flat plane of the lower frame toward the printed circuit board, and

distal portions of the positioning projections protrude from, and bend away from the printed circuit board arranged on or above the lower frame.

2. The display device according to claim 1 ,

wherein the lower frame has protrusions for fixing the printed circuit board, the protrusions located inside of the region where the printed circuit board is arranged, and bending so as to support and fix the printed circuit board.

3. The display device according to claim 1 ,

wherein the printed circuit board has positioning grooves at least in the vicinities of center parts of parallel two sides, the positioning grooves being concave toward the center of the printed circuit board, and

the positioning projections of the lower frame engage with the positioning grooves of the printed circuit board so as to support and fix the printed circuit board.

4. The display device according to claim 1 ,

wherein the printed circuit board has a substantially quadrilateral planar shape, and

the positioning projections of the lower frame are arranged at positions facing the four sides of the printed circuit board, respectively.

5. The display device according to claim 1 ,

wherein the printed circuit board is arranged in the rear of the lower frame when viewed from a viewer.

6. The display device according to claim 1 ,

wherein the display panel is a liquid crystal display panel comprising:

a pair of substrates; and

a liquid crystal material encapsulated between the pair of substrates.

7. A display device comprising:

a display panel;

a supporting member arranged on an outer periphery of the display panel when viewed from a viewer; and

an upper frame arranged in front of the display panel when viewed from the viewer,

the supporting member and the upper frame supporting the display panel by holding the outer periphery of the display panel between them,

wherein the supporting member carries at least one positioning projection arranged on a plane facing the upper frame and protruding toward the upper frame,

the upper frame has at least one positioning opening corresponding to the at least one positioning projection of the supporting member, and

the opening edge of the upper frame around the positioning opening has an inner periphery and an outer periphery, the outer periphery extending toward the supporting member, and the inner periphery located in the vicinity of the opening edge and extending away from the supporting member.

8. The display device according to claim 7 ,

wherein a surface of the inner periphery facing the positioning projection of the supporting member is curved.

9. The display device according to claim 7 ,

wherein the at least one positioning opening of the upper frame is located in the vicinity of the bottom of the at least one positioning projection of the supporting member.

10. The display device according to claim 7 ,

wherein the outer periphery of the opening edge extends toward the supporting member longer than the inner periphery of the opening edge extends away from the supporting member.

11. The display device according to claim 7 ,

wherein the display panel is a liquid crystal display panel comprising:

a pair of substrates; and

a liquid crystal material encapsulated between the pair of substrates.

12. A display device comprising:

a display module including a display panel and a lower frame arranged in the rear of the display panel when viewed from a viewer; and

a cabinet housing the display module,

wherein the cabinet has plural positioning projections, the positioning projections located in the rear of the lower frame when viewed from the viewer, arranged on a plane facing the lower frame, and protruding toward the lower frame,

wherein the lower frame has positioning openings corresponding to the positioning projections of the cabinet, and

the vicinities of opening edges of the peripheries around the positioning openings of the lower frame bend and extend away from a plane facing the cabinet, and surfaces of the bending vicinities facing the positioning openings of the cabinet are curved.

13. The display device according to claim 12 ,

wherein the bottoms of the positioning projections of the cabinet have planar areas larger than the opening areas of the corresponding positioning openings of the lower frame.

14. A display device comprising:

a display module including a display panel and a lower frame arranged in the rear of the display panel when viewed from a viewer; and

a cabinet housing the display module,

wherein the cabinet is located in the rear of the lower frame when viewed from the viewer and has at least one positioning opening in a plane facing the lower frame,

the lower frame carries at least one positioning projection corresponding to the at least one positioning opening of the cabinet, and

the opening edge of the cabinet around the positioning opening has an inner periphery and an outer periphery, the outer periphery bending and extending toward the lower frame, and the inner periphery located in the vicinity of the opening edge and bending and extending away from the lower frame.

15. The display device according to claim 14 ,

wherein a surface of the inner periphery facing the positioning projection of the lower frame is curved.

16. The display device according to claim 14 ,

wherein the at least one positioning opening of the cabinet is located in the vicinity of the bottom of the at least one positioning projection of the lower frame.

17. The display device according to claim 14 ,

wherein the outer periphery of the positioning opening of the cabinet extends toward the lower frame longer than the inner periphery of the opening edge extends away from the lower frame.

18. The display device according to claim 12 ,

wherein the display panel is a liquid crystal display panel comprising:

a pair of substrates; and

a liquid crystal material encapsulated between the pair of substrates.

19. The display device according to claim 14 ,

wherein the display panel is a liquid crystal display panel comprising:

a pair of substrates; and

a liquid crystal material encapsulated between the pair of substrates.

Assignments (9)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 10, 2025
From: JAPAN DISPLAY INC
To: MAGNOLIA PURPLE CORPORATION
Reel/Frame 071890/0202 →
CHANGE OF NAME Recorded Nov 17, 2023
From: HITACHI DISPLAYS, LTD.
To: JAPAN DISPLAY EAST, INC.
Reel/Frame 065614/0223 →
CHANGE OF NAME Recorded Nov 17, 2023
From: JAPAN DISPLAY EAST, INC.
To: JAPAN DISPLAY, INC.
Reel/Frame 065614/0644 →
CHANGE OF ADDRESS Recorded Nov 17, 2023
From: JAPAN DISPLAY, INC.
To: JAPAN DISPLAY, INC.
Reel/Frame 065654/0250 →
NUNC PRO TUNC ASSIGNMENT Recorded Nov 17, 2023
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
To: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Reel/Frame 065615/0327 →
COMPANY SPLIT PLAN TRANSFERRING FIFTY (50) PERCENT SHARE OF PATENTS AND PATENT APPLICATIONS Recorded Dec 12, 2011
From: HITACHI DISPLAYS, LTD.
To: IPS ALPHA SUPPORT CO., LTD.
Reel/Frame 027362/0532 →
MERGER/CHANGE OF NAME Recorded Dec 12, 2011
From: IPS ALPHA SUPPORT CO., LTD.
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 027363/0282 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 4, 2011
From: HITACHI DISPLAY DEVICES, LTD.
To: HITACHI DISPLAYS, LTD.
Reel/Frame 026223/0293 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 29, 2007
From: AZUMA, YUJI; TSUBOKURA, MASAKI; MORISHITA, SHUNSUKE; ITAKURA, SHIMON; ABO, SEIGO
To: HITACHI DISPLAYS, LTD.; HITACHI DISPLAY DEVICES, LTD.
Reel/Frame 019387/0188 →