TOUCH DISPLAY DEVICE

• US 20160034076A1
• Filed: 07/23/2015
• Published: 02/04/2016
• Est. Priority Date: 07/29/2014
• Status: Abandoned Application

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: CHIEN, Chuan-Chi, HSU, Hsiu-Ting
• Application Number:
  US14/806,949
• Publication Number:
  US 20160034076A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G09G 5/003 Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto specific for a CRT G09G1/165; for a flat panel G09G3/2092

Abstract

A touch display device is provided. The touch display device includes a display panel and a touch sensor disposed above the display panel. The touch sensor includes a plurality of first electrode units arranged along a first direction and separated from each other, and a bridge portion electrically connecting the first electrode units with each other. A plurality of second electrode units are arranged along a second direction perpendicular to the first direction and connected to each other through a connection portion. The connection portion intersects the bridge portion. An isolation portion is disposed between the bridge portion and the connection portion. A first distance is between the first electrode unit and the adjacent second electrode unit. A second distance is between the first electrode unit and the adjacent connection portion. The second distance is shorter than the first distance.

Claims

1. A touch display device, comprising:

a display panel;

a touch sensor disposed above the display panel, the touch sensor comprising;

a plurality of first electrode units arranged along a first direction;

a bridge portion electrically connecting the adjacent first electrode units with each other;

a plurality of second electrode units arranged along a second direction perpendicular to the first direction;

a connection portion electrically connecting the adjacent second electrode units with each other, wherein the connection portion intersects the bridge portion; and

an isolation portion disposed between the bridge portion and the connection portion,

wherein the first electrode unit is separated from the adjacent second electrode unit by a first distance, the first electrode unit is separated from the adjacent connection portion by a second distance, and the second distance is shorter than the first distance.

2. The touch display device of claim 1, wherein the isolation portion overlaps with the bridge portion, the isolation portion has an indentation at an end of the isolation portion along the first direction, the indentation has an opening part and a bottom part, and the opening part of the indentation has a width that is greater than a width of the bridge portion.

3. The touch display device of claim 2, wherein the isolation portion has a side indentation has a depth from the side of the isolation portion to the bottom part of the indentation, and the depth of the indentation is 5% to 99% of the third distance.

4. The touch display device of claim 2, wherein an area between the first electrode unit and the connection portion and an area between the first electrode unit and the second electrode unit are exposed by the indentation of the isolation portion.

5. The touch display device of claim 2, wherein the bottom part of the indentation has a width that is greater than a width of the bridge portion.

6. The touch display device of claim 1, wherein the difference between the first distance and the second distance is in a range of 1 μ

m to 25 μ

m.

7. A touch display device, comprising:

a display panel;

a touch sensor disposed above the display panel, the touch sensor comprising;

a plurality of first electrode units arranged along a first direction;

a bridge portion electrically connecting the adjacent first electrode units with each other;

a plurality of second electrode units arranged along a second direction perpendicular to the first direction;

a connection portion electrically connecting the adjacent second electrode units with each other, wherein the connection portion intersects the bridge portion; and

an isolation portion disposed between the bridge portion and the connection portion,

wherein the isolation portion overlaps with the bridge portion, the isolation portion has an indentation at an end of the isolation portion along the first direction, and the indentation has a width that is greater than a width of the bridge portion.

8. The touch display device of claim 7, wherein the isolation portion has a side being separated from an adjacent edge of the connection portion by a distance, the indentation has a depth from the side of the isolation portion to a bottom part of the indentation, and the depth of the indentation is 5% to 99% of the distance.

9. The touch display device of claim 7, wherein an area between the first electrode unit and the connection portion and an area between the first electrode unit and the second electrode unit are exposed by the indentation of the isolation portion.

10. The touch display device of claim 7, wherein the isolation portion extends onto a portion of the second electrode unit.