Display device

Patent metadata

Field	Value
Publication number	US-9229570-B2
Application number	US-201313945163-A
Country	US
Kind code	B2
Filing date	Jul 18, 2013
Priority date	Oct 8, 2012
Publication date	Jan 5, 2016
Grant date	Jan 5, 2016

Abstract

A display device includes a first substrate, a display section that is on the first substrate and that displays an image, first pad portions at a first directional edge of the first substrate and connected to the display section and to a driver integrated circuit (driver IC) that supplies a driving voltage, a second substrate on the first substrate with the display section interposed therebetween, and which exposes the first pad portions, a touch section that is on the second substrate and that corresponds to the display section, second pad portions on the second substrate and connected to edges of the touch section, a main flexible printed circuit board (main FPCB) connected to the first pad portions, and a touch flexible printed circuit board (touch FPCB) connected to the second pad portions and overlapping the main FPCB.

First claim

What is claimed is:

1. A display device, comprising:
a first substrate;
a display section that is on the first substrate and that displays an image;
first pad portions at a first directional edge of the first substrate, and connected to the display section and to a driver integrated circuit (driver IC) that supplies a driving voltage;
a second substrate on the first substrate with the display section interposed therebetween, the second substrate exposing the first pad portions;
a touch section that is on the second substrate and that corresponds to the display section;
second pad portions on the second substrate and connected to edges of the touch section;
a main flexible printed circuit board (main FPCB) connected to the first pad portions; and
a touch flexible printed circuit board (touch FPCB) connected to the second pad portions and overlapping the main FPCB,
the touch FPCB covering at least a portion of the driver IC to achieve double routing.

2. The display device of claim 1 , wherein:
a plurality of input signal wires that transmit an input signal resulting from a first directional change in electrostatic capacitance are on opposite sides in a first direction of the second substrate, and
a plurality of second input signal wires that transmit an input signal resulting from a second directional change are on opposite sides in a second direction, which crosses the first direction, of the second substrate.

3. The display device of claim 2 , wherein the touch section includes:
first electrode pattern portions that are provided in plural form side by side in the first direction to sense a first directional change in electrostatic capacitance, and are connected to the first input signal wires, and
second electrode pattern portions that are provided in plural form side by side in the second direction to sense a second directional change in electrostatic capacitance, and are connected to the second input signal wires.

4. The display device of claim 3 , wherein the first electrode pattern portions and the second electrode pattern portions are formed of a transparent electrode on an insulating layer, and the transparent electrode includes at least one of indium tin oxide, indium zinc oxide, indium tin zinc oxide, and antimony tin oxide.

5. The display device of claim 1 , wherein the touch FPCB is connected to the second pad portions by an anisotropic conductive film at an edge of the second substrate.

6. The display device of claim 1 , wherein the touch FPCB covers an entirety of the driver IC.

7. The display device of claim 1 , wherein the touch FPCB covers a partial area of the driver IC that includes edges along one side of the driver IC.

8. The display device of claim 1 , wherein the touch FPCB covers a partial area of the driver IC that includes a center of the driver IC.

9. The display device of claim 1 , wherein the display section includes an organic light emitting element.

10. A display device, comprising:
a first substrate;
a display section that is on the first substrate and that displays an image;
first pad portions at a first directional edge of the first substrate, and connected to the display section and to a driver integrated circuit (driver IC) that supplies a driving voltage;
a second substrate on the first substrate with the display section interposed therebetween, the second substrate exposing the first pad portions;
a touch section that is on the second substrate and that corresponds to the display section;
second pad portions on the second substrate and connected to edges of the touch section;
a main flexible printed circuit board (main FPCB) connected to the first pad portions; and
a touch flexible printed circuit board (touch FPCB) connected to the second pad portions and overlapping the main FPCB,
wherein the touch FPCB covers at least a portion of the driver IC to achieve double routing and is connected to the second pad portions by an anisotropic conductive film at an edge of the second substrate, and the anisotropic conductive film attaches one edge of the second substrate and one edge of the touch FPCB at a melting temperature of about 165° C. to about 175° C.

Assignees

• Choi Suk-Ho
• Kim Jong-Hwan
• Kim Joon-Sam
• Kwack Jun-Ho
• Yeo Sang-Won
• Samsung Display Co Ltd

Inventors

• Choi Suk-Ho
• Kim Jong-Hwan
• Kim Joon-Sam
• Kwack Jun-Ho
• Yeo Sang-Won

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/044

  by capacitive means · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/04164

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title