Touch panel and touch detection circuit

Patent metadata

Field	Value
Publication number	US-9846499-B2
Application number	US-201514724261-A
Country	US
Kind code	B2
Filing date	May 28, 2015
Priority date	May 30, 2014
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

Aspects of the disclosure provide a touch panel having an electrode array. The electrode array includes first electrodes arranged on a first layer, each first electrode patterned to include a plurality of sequentially connected first electrode elements that are generally shaped as elongated polygons, and second electrodes arranged on a second layer, each second electrode patterned to include a plurality of sequentially connected second electrode elements that are generally shaped as elongated polygons, wherein the first electrodes on the first layer and the second electrodes on the second layer are arranged over one another so as to form an interlocking pattern.

First claim

What is claimed is:

1. A touch panel having an electrode array, the electrode array comprising:
first electrodes arranged on a first layer, each first electrode patterned to include a plurality of sequentially connected first electrode elements that are generally shaped as elongated polygons, each elongated polygon including a plurality of separated suspended blocks, each block shaped as a right trapezoid, and
second electrodes arranged on a second layer, each second electrode patterned to include a plurality of sequentially connected second electrode elements that are generally shaped as elongated polygons,
wherein the first electrodes on the first layer and the second electrodes on the second layer are arranged over one another surrounding a rectangular shaped electrode including a plurality of separated suspended blocks, each block shaped as a rectangle, the rectangular shaped electrode surrounded by the first electrodes and the second electrodes forming an octagon shape.

2. The touch panel of claim 1 , wherein the first electrode elements on the first layer and the second electrode elements on the second layer are hexagon-shaped.

3. The touch panel of claim 2 , wherein the first electrode elements on the first layer and the second electrode elements on second layer are hollowed-hexagon-shaped.

4. The touch panel of claim 3 , wherein a first hollow area inside the hollowed hexagon of the first and second electrode elements and a second hollow area between the adjacent hollowed hexagons of the first and second electrode elements include suspended blocks.

5. The touch panel of claim 4 , wherein the suspended blocks in each of the first hollow areas and the second hollow areas includes a plurality of suspended blocks.

6. The touch panel of claim 4 , wherein the suspended blocks are coplanar with either one of the first layer or the second layer.

7. The touch panel of claim 1 , wherein at least one of the electrodes includes an extra branch in a middle portion of the electrode.

8. The touch panel of claim 1 , wherein the first electrodes on the first layer and the second electrodes on the second layer are coplanar with each other.

9. The touch panel of claim 1 , further including a display, wherein the electrode array is positioned in front of the display.

10. The touch panel of claim 1 , further including a display, wherein the electrode array is integrated into the display.

Assignees

• Marvell World Trade Ltd

Inventors

• Chen Yexin
• Hou Wei
• Zhang Haiqing
• Shui Tao
• Song Yonghua

Classifications

• G06F2203/04104

  Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger · CPC title

• G06F3/044

  by capacitive means · CPC title

• G06F3/0416

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F2203/04106

  Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection · CPC title

• G06F2203/04111

  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 title