Touch sensor panel and touch input device with reduced magnitude of low ground mass interference signal

Patent metadata

Field	Value
Publication number	US-11537248-B2
Application number	US-201917263770-A
Country	US
Kind code	B2
Filing date	Jul 31, 2019
Priority date	Aug 3, 2018
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A touch sensor panel according to the present invention includes: a plurality of first electrodes and a plurality of second electrodes, in which a touch window area includes a first number of consecutive first electrodes in a first direction among the plurality of first electrodes and a second number of consecutive second electrodes in a second direction with respect to at least one of the first number of first electrodes to correspond to each other, and a value acquired by multiplying the number of unit cells constituting at least one first electrode connected to a first trace among the first electrodes included in the touch window area and the number of unit cells constituting at least one second electrode connected to a second trace among the second electrodes included in the touch window area is less than a predetermined value.

First claim

The invention claimed is:

1. A touch sensor panel comprising:
a plurality of first electrodes and a plurality of second electrodes,
wherein a touch window area includes a first number of consecutive first electrodes in a first direction among the plurality of first electrodes and a second number of consecutive second electrodes in a second direction with respect to at least one of the first number of first electrodes to correspond to each other, and
a value acquired by a multiplication of the number of unit cells constituting at least one first electrode connected to a first trace among the first electrodes included in the touch window area and the number of unit cells constituting at least one second electrode connected to a second trace among the second electrodes included in the touch window area is less than a predetermined value, wherein the predetermined value is 16.

2. The touch sensor panel of claim 1 , further comprising:
a plurality of first electrode arrays including the plurality of first electrodes and a plurality of second electrode arrays including the plurality of second electrodes,
wherein at least two of the second electrodes included in the second electrode array which is any one of the plurality of second electrode arrays are arranged to correspond adjacent to any one of the first electrodes included in the first electrode array which is any one of the plurality of first electrode arrays,
any one of the first electrodes included in the first electrode array is connected to some of the remaining first electrodes other than the any one first electrode among the plurality of first electrodes by using the first trace, and
any one of the second electrodes included in the second electrode array is connected to some of the remaining second electrodes other than the any one second electrode among the plurality of second electrodes by using the second trace.

3. The touch sensor panel of claim 2 , wherein the first electrodes included in the touch window area among the plurality of first electrodes are connected to different first traces, respectively.

4. The touch sensor panel of claim 2 , wherein the second electrode array is arranged on one side of any one of the first electrodes included in the first electrode array and another second electrode array is arranged on the other side,
any one of the second electrodes included in the second electrode array and any one of other second electrodes included in the other second electrode array are arranged in the same row around any one of the first electrodes, and
any one of the second electrodes included in the second electrode array arranged in the same row and any one of the other second electrodes included in the other second electrode array are connected by using the second trace.

5. The touch sensor panel of claim 2 , further comprising:
an adjacent touch area implemented to have the same size as the touch window area adjacent to the touch window area in a column direction,
in which each of the second electrodes included in the touch window area among the second electrodes included in the second electrode array is repeatedly arranged in the adjacent touch area among the second electrodes included in the second electrode array.

6. The touch sensor panel of claim 5 , wherein one of the second electrodes included in the touch window area among the second electrodes included in the second electrode array and one of the second electrodes included in the adjacent touch area among the second electrodes included in the second electrode array are arranged adjacent to each other and the second electrodes arranged adjacent to each other are connected by using the second trace.

7. The touch sensor panel of claim 1 , further comprising:
a control unit detecting whether a touch has occurred on a touch sensor including the plurality of first electrodes and the plurality of second electrodes,
wherein the control unit uses a predetermined noise signal value detected in a predetermined second electrode among the second electrodes included in the touch window area and some of the first electrodes spaced apart from the predetermined second electrode to detect only a mutual capacitance signal value acquired by excluding the predetermined noise signal among signal values detected in at least one first electrode adjacent to the predetermined second electrode.

8. The touch sensor panel of claim 7 , wherein the predetermined noise signal value includes at least one of a display noise signal value, a noise signal value generated according to image conversion on a display, and a low ground mass (LGM) interference signal value.

9. A touch sensor panel comprising:
a plurality of first electrodes and a plurality of second electrodes,
wherein a touch window area includes a first number of consecutive first electrodes in a first direction among the plurality of first electrodes and a second number of consecutive second electrodes in a second direction with respect to at least one of the first number of first electrodes to correspond to each other, and
a value acquired by a multiplication of the number of unit cells constituting at least one first electrode connected to a first trace among the first electrodes included in the touch window area and the number of unit cells constituting at least one second electrode connected to a second trace among the second electrodes included in the touch window area is less than a predetermined value,

wherein a pair of a predetermined first electrode among the first electrodes included in the touch window area and a predetermined second electrode among the second electrodes do not exist in other window areas other than the touch window area.

10. The touch sensor panel of claim 9 , further comprising:
a plurality of first electrode arrays including the plurality of first electrodes and a plurality of second electrode arrays including the plurality of second electrodes,
wherein at least two of the second electrodes included in the second electrode array which is any one of the plurality of second electrode arrays are arranged to correspond adjacent to any one of the first electrodes included in the first electrode array which is any one of the plurality of first electrode arrays,
any one of the first electrodes included in the first electrode array is connected to some of the remaining first electrodes other than the any one first electrode among the plurality of first electrodes by using the first trace, and
any one of the second electrodes included in the second electrode array is connected to some of the remaining second electrodes other than the any one second electrode among the plurality of second electrodes by using the second trace.

11. The touch sensor panel of claim 10 , wherein the first electrodes included in the touch window area among the plurality of first electrodes are connected to different first traces, respectively.

12. The touch sensor panel of claim 10 , wherein the second electrode array is arranged on one side of any one of the first electrodes included in the first electrode array and another second electrode array is arranged on the other side,
any one of the second electrodes included in the second electrode array and any one of other second electrodes included in the other second electrode array are arranged in the same row around any one of the first electrodes, and
any one of the second electrodes included in the second electrode array arranged in the same row and any one of the other second electrodes included in the other second electrode array are connected by using the second trace.

13. The touch sensor panel of claim 10 , further co

Assignees

• Hideep Inc

Inventors

• Kim Seyeob
• Kim Bonkee
• Kim Jongsik
• Lee Sein

Classifications

• G06F3/0446

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

• H01B5/00

  Non-insulated conductors or conductive bodies characterised by their form · CPC title

• G06F3/0445 Primary

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0448

  Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality · CPC title