Display device

Patent metadata

Field	Value
Publication number	US-9042108-B2
Application number	US-201113702216-A
Country	US
Kind code	B2
Filing date	Apr 11, 2011
Priority date	Jun 22, 2010
Publication date	May 26, 2015
Grant date	May 26, 2015

Abstract

In a display device ( 100 ), a row of protruding electrodes ( 115 ) and a row of protruding electrodes ( 116 ) are formed on the connecting surface of a terminal section ( 112 ), the row of the protruding electrodes ( 116 ) is disposed between the row of the protruding electrodes ( 115 ) and a display section ( 111 ), one end of a flexible printed board ( 150 ) is connected to the row of the protruding electrodes ( 115 ), one end of a flexible printed board ( 160 ) is connected to the row of the protruding electrodes ( 116 ), the row of the protruding electrodes ( 115 ) is adjacent to the row of the protruding electrodes ( 116 ), and the one end of the flexible printed board ( 150 ) and the one end of the flexible printed board ( 160 ) are opposed to each other.

First claim

The invention claimed is:

1. A display device comprising a display section that displays an image and a terminal section that is formed around the display section,
wherein the display device further comprises a first flexible printed board and a second flexible printed board overlapping the first flexible printed board,
an external circuit that controls the display section is disposed next to a connecting surface of the terminal section with respect to the horizontal direction,
a row of first protruding electrodes and a row of second protruding electrodes are formed on the connecting surface of the terminal section,
the row of the second protruding electrodes is disposed between the row of the first protruding electrodes and the display section,
one end of the first flexible printed board is connected to the row of the first protruding electrodes,
one end of the second flexible printed board is connected to the row of the second protruding electrodes,
the row of the first protruding electrodes is adjacent to the row of the second protruding electrodes,
one end face of the first flexible printed board and one end face of the second flexible printed board are opposed to each other, and
the second flexible printed board is folded toward the external circuit above the terminal section so as not to block light to the display section.

2. The display device according to claim 1 ,
wherein a row of first metal electrodes and a row of second metal electrodes are formed on a connecting surface of the external circuit,
the row of the second metal electrodes is located farther from the terminal section than the row of the first metal electrodes,
another end of the first flexible printed board is connected to the row of the first metal electrodes,
another end of the second flexible printed board is connected to the row of the second metal electrodes.

3. The display device according to claim 2 , further comprising:
a plurality of first electrodes formed on the one end of the second flexible printed board, the first electrode being connected to the second protruding electrode; and
a plurality of second electrodes formed on the other end of the second flexible printed board, the second electrode being connected to the second metal electrode,
wherein the plurality of first electrodes and the plurality of second electrodes are disposed on one surface of the second flexible printed board, and
the second flexible printed board is folded an even number of times between the one end and the other end of the second flexible printed board.

4. The display device according to claim 3 , wherein the second flexible printed board is folded such that wires of the second flexible printed board are folded above the row of the second metal electrodes.

5. The display device according to claim 2 , further comprising:
a plurality of first electrodes formed on the one end of the second flexible printed board, the first electrode being connected to the second protruding electrode; and
a plurality of second electrodes formed on the other end of the second flexible printed board, the second electrode being connected to the second metal electrode,
wherein the plurality of first electrodes are disposed on one of two surfaces of the second flexible printed board,
the plurality of second electrodes are disposed on the other surface of the second flexible printed board, and
the second flexible printed board is folded an odd number of times between the one end and the other end of the second flexible printed board.

6. The display device according to claim 1 , the one end face of the first flexible printed board and the one end face of the second flexible printed board are immediately and directly opposed to each other.

7. A method of manufacturing a display device comprising a display section that displays an image and a terminal section that is formed around the display section,
wherein a row of first protruding electrodes and a row of second protruding electrodes are formed on a connecting surface of the terminal section, the row of the second protruding electrodes is disposed between the row of the first protruding electrodes and the display section, and the row of the first protruding electrodes is adjacent to the row of the second protruding electrodes,
the method comprising:
disposing one end of a first flexible printed board above the row of the first protruding electrodes and disposing one end of a second flexible printed board above the row of the second protruding electrodes in a state in which one end face of the first flexible printed board and one end face of the second flexible printed board are opposed to each other,
simultaneously pressing the one end of the first flexible printed board and the one end of the second flexible printed board by a head to connect the one end of the first flexible printed board to the row of the first protruding electrodes and the one end of the second flexible printed board to the row of the second protruding electrodes, and
folding the second flexible printed board above the terminal section so as not to block light to the display section in a state in which the one end of the second flexible printed board is connected to the row of the second protruding electrodes.

8. The method of manufacturing a display device according to claim 7 , the one end face of the first flexible printed board and the one end face of the second flexible printed board are immediately and directly opposed to each other.

Assignees

• Nobori Kazuhiro
• Panasonic Ip Man Co Ltd

Inventors

• Nobori Kazuhiro

Classifications

• H05K1/147

  at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit (H05K1/148 takes precedence) · CPC title

• H05K2201/045

  Hierarchy auxiliary PCB, i.e. more than two levels of hierarchy for daughter PCBs are important · CPC title

• H05K3/323

  by applying an anisotropic conductive adhesive layer over an array of pads · CPC title

• H05K2201/09445

  Pads for connections not located at the edge of the PCB, e.g. for flexible circuits · CPC title

• H05K2201/055

  Folded back on itself · CPC title