Title:
DISPLAY SYSTEM AND CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/090094
Kind Code:
A1
Abstract:
In the present invention a touch detection circuit detects whether an object has touched a display device on the basis of a touch detection signal received from each of a plurality of common electrodes of the display device. One set from among a group comprising a first common electrode 34a_1 and a second common electrode 34a_2 and a group comprising the first common electrode and a third common electrode 34b_1 is arranged in the same column and the other set is arranged in the same row. At least one set from among the group comprising the first common electrode and the second common electrode and the group comprising the first common electrode and the third common electrode are adjacent. A first A/D converter circuit 80_1 A/D converts a signal supplied to a first input node N1. A second A/D converter circuit 80_2 A/D converts a signal supplied to a second input node N2. A first switch SW1_1 switches between conduction and non-conduction between the first common electrode and the first input node. A second switch SW1_2 switches between conduction and non-conduction between the second common electrode and the second input node. A third switch SW2_1 switches between conduction and non-conduction between the third common electrode and the first input node.
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Inventors:
HIRAI ATSUSHI
Application Number:
PCT/JP2022/039870
Publication Date:
May 25, 2023
Filing Date:
October 26, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G06F3/041; G06F3/044; G09G3/20; G09G3/36
Domestic Patent References:
| WO2020209246A1 | 2020-10-15 |
Foreign References:
| KR20170015418A | 2017-02-08 | |||
| JP2016540302A | 2016-12-22 |
Attorney, Agent or Firm:
MUNETA Satoshi (JP)
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