Capacitive touch panel

Patent metadata

Field	Value
Publication number	US-2016011694-A1
Application number	US-201514795094-A
Country	US
Kind code	A1
Filing date	Jul 9, 2015
Priority date	Jul 11, 2014
Publication date	Jan 14, 2016
Grant date	—

Abstract

An on-cell capacitive touch panel is disclosed. Its laminated structure includes a LCD module, a touch sensing module, and a polarizing module. The touch sensing module is disposed on the LCD module. The polarizing module is disposed on the touch sensing module. The touch sensing module includes a touch sensor pattern having a single-layer ITO structure. The touch sensor pattern includes a first pattern unit and a second pattern unit which are the same and both have at least one first electrode, second electrode, and extending electrode. The first electrode is arranged along a first direction and the second electrode is arranged along a second direction. The first direction and second direction are vertical. The first electrode crosses the second electrode via a bridge structure. The extending electrode surrounds the first electrode and it is arranged along the first direction.

First claim

1 . A capacitive touch panel having an on-cell type, the capacitive touch panel comprising:
a laminated structure, comprising:
a LCD module;
a touch sensing module, disposed on the LCD module; and
a polarizing module, disposed on the touch sensing module;
wherein the touch sensing module comprises a plurality of touch sensor patterns which are identical, a touch sensor pattern of the plurality of touch sensor patterns has a single-layer ITO structure, the touch sensor pattern comprises a first pattern unit and a second pattern unit which are identical, the first pattern unit and the second pattern unit both comprise at least one first electrode, at least one second electrode, and at least one extending electrode, the at least one first electrode is arranged along a first direction and the at least one second electrode is arranged along a second direction, the first direction is perpendicular to the second direction, the at least one first electrode crosses the at least one second electrode via a bridge structure, the at least one extending electrode surrounds the at least one first electrode and the at least one extending electrode is arranged along the first direction.

2 . The capacitive touch panel of claim 1 , wherein a width of the at least one first electrode is 100˜400 um.

3 . The capacitive touch panel of claim 1 , wherein a width of the at least one second electrode is 200˜600 um.

4 . The capacitive touch panel of claim 1 , wherein a width of the at least one extending electrode is 20˜100 um.

5 . The capacitive touch panel of claim 1 , wherein a distance between the at least one extending electrode and the at least one first electrode is 20˜100 um.

6 . The capacitive touch panel of claim 1 , wherein the bridge structure is located at centers of the first pattern unit and the second pattern unit.

7 . The capacitive touch panel of claim 1 , wherein the at least one extending electrode extends from the at least one second electrode toward an edge of the touch sensor pattern along the first direction.

8 . The capacitive touch panel of claim 1 , wherein the at least one extending electrode has single slope or multi-slope.

9 . The capacitive touch panel of claim 1 , wherein a conductive material of the plurality of touch sensor patterns is indium tin oxide (ITO), nano silver, or carbon nanotube.

10 . The capacitive touch panel of claim 1 , wherein the first direction is a horizontal direction and the second direction is a vertical direction, or the first direction is the vertical direction and the second direction is the horizontal direction.

11 . The capacitive touch panel of claim 1 , wherein the at least one first electrode is a sensing electrode and the at least one second electrode is a driving electrode, or the at least one first electrode is the driving electrode and the at least one second electrode is the sensing electrode.

12 . A capacitive touch panel having an on-cell type, the capacitive touch panel comprising:
a laminated structure comprising:
a LCD module;
a touch sensing module, disposed on the LCD module; and
a polarizing module, disposed on the touch sensing module;
wherein the touch sensing module comprises a plurality of touch sensor patterns, a touch sensor pattern of the plurality of touch sensor patterns has a single-layer ITO structure, the touch sensor pattern comprises a first pattern unit and a second pattern unit which are symmetrical to a center of the touch sensor pattern, the first pattern unit and the second pattern unit both comprise at least one first electrode and at least two second electrodes, the at least one first electrode comprises a first section and a second section, the first section is arranged along a first direction and the at least two second electrodes are arranged along a second direction, the second section is L-shaped and comprises a horizontal part and a vertical part, the horizontal part crosses a second electrode of the at least two second electrodes and the horizontal part is coupled to the first section via a bridge structure, the vertical part extends to the center of the touch sensor pattern, the first direction is perpendicular to the second direction, the bridge structure in the first pattern unit and another bridge structure in the second pattern unit are symmetrical to the center of the touch sensor pattern.

13 . The capacitive touch panel of claim 12 , wherein a width of the first section and that of the horizontal part of the second section are 200˜600 um.

14 . The capacitive touch panel of claim 12 , wherein a width of the vertical part of the second section is 100˜400 um.

15 . The capacitive touch panel of claim 12 , wherein a width of the at least two second electrodes is 100˜400 um.

16 . The capacitive touch panel of claim 12 , wherein the touch sensor pattern and another touch sensor pattern adjacent to the touch sensor pattern along the first direction mirror each other.

17 . The capacitive touch panel of claim 12 , wherein the touch sensor pattern and another touch sensor pattern adjacent to the touch sensor pattern along the second direction mirror each other.

18 . The capacitive touch panel of claim 12 , wherein a conductive material of the plurality of touch sensor patterns is indium tin oxide (ITO), nano silver, or carbon nanotube.

19 . The capacitive touch panel of claim 12 , wherein the first direction is a horizontal direction and the second direction is a vertical direction, or the first direction is the vertical direction and the second direction is the horizontal direction.

20 . The capacitive touch panel of claim 12 , wherein the at least one first electrode is a sensing electrode and the at least two second electrodes are driving electrodes, or the at least one first electrode is the driving electrode and the at least two second electrodes are the sensing electrodes.

Assignees

• Raydium Semiconductor Corp

Inventors

• Lin Yi-Ying
• Lin Kuan-Ming
• Shieh Hsin-Wei
• Lee Kun-Pei

Classifications

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• G06F3/0443 Primary

  using a single layer of sensing electrodes · CPC title

• G02F1/133528

  Polarisers · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title