CONTACT DETECTING DEVICE AND DISPLAY DEVICE

• US 20150370408A1
• Filed: 08/28/2015
• Published: 12/24/2015
• Est. Priority Date: 09/16/2008
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: NOGUCHI, Koji, TAKEUCHI, Takeya
• Granted Patent: US 9,965,082 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 1/16 Constructional details or arrangements
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• 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

Abstract

Disclosed herein is a contact detecting device including: a contact responding section configured to produce an electric change in response to an object to be detected coming into contact with or proximity to a detecting surface; and a contact driving scanning section configured to scan application of driving voltage to the contact responding section in one direction within the detecting surface, and control output of the electric change in time series, wherein the contact driving scanning section performs a plurality of scans of different regions of the contact responding section in parallel with each other, and outputs a plurality of the electric changes in parallel with each other.

Claims

1-17. -17. (canceled)

18. A touch detecting device comprising:

a touch panel including a first region and a second region;

a plurality of detecting lines arranged for the first region;

a plurality of driving lines arranged to intersect the detecting lines in the first region;

a plurality of detecting lines arranged for the second region;

a plurality of driving lines arranged to intersect the detecting lines in the second region;

a scan driving section configured to supply a scan driving voltage to the first region and the second region via corresponding driving lines; and

at least one detecting section to detect a touch,

wherein the scan driving section performs a plurality of scans of the first and second regions in parallel with each other by identically supplying the scan driving voltage as a common driving signal that is an alternating current pulse signal having a predetermined frequency to the corresponding driving lines in parallel.

19. The touch detecting device set forth in claim 18,

wherein the first region and the second region are in parallel with each other in a direction of the driving lines.