Position detecting method for touchscreen panel, touchscreen panel, and electronic apparatus

• US 10,095,365 B2
• Filed: 01/26/2016
• Issued: 10/09/2018
• Est. Priority Date: 04/22/2009
• Status: Active Grant

• Current Assignee: Fujitsu Component Limited (Fujitsu Limited)
• Original Assignee: Fujitsu Component Limited (Fujitsu Limited)
• Inventors: Kondoh, Koichi, Nakajima, Takashi, Shimizu, Nobuyoshi, Hayama, Masanobu, Endo, Norio, Ichikawa, Daisuke
• Primary Examiner(s): Lee, Gene W
• Application Number:
  US15/006,308
• Publication Number:
  US 20160139713A1
• Time in Patent Office: 987 Days
• CPC Class Codes: G06F 2203/04104 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 Class Codes: G06F 2203/04808 Several contacts: gestures triggering a specific function, e.g. scrolling, zooming, right-click, when the user establishes several contacts with the surface simultaneously; e.g. using several fingers or a combination of fingers and pen
• 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 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

A position detecting method for a touchscreen panel includes the steps of (a) determining the presence or absence of contact with the touchscreen panel on a conductive film divided into multiple conductive regions; (b) measuring a time after the detection of the absence of the contact and determining whether the measured time is less than a predetermined time if step (a) determines the absence of the contact; and (c) determining the continuance of the contact if the measured time is less than the predetermined time.

Claims

1. A position detecting method for a touchscreen panel on which a conductive film divided into a plurality of conductive regions is formed, the position detecting method comprising:

conducting a first sequential scanning, the first sequential scanning sequentially scanning the conductive regions one by one to determine whether the touchscreen panel is contacted with respect to each of the conductive regions;

detecting a first contacted position on the touchscreen panel at which the touchscreen panel is contacted within a first conductive region among the conductive regions during the first sequential scanning;

conducting a second sequential scanning after conducting the first sequential scanning, the second sequential scanning sequentially scanning the conductive regions one by one to determine whether the touchscreen panel is contacted with respect to each of the conductive regions;

detecting a second contacted position on the touchscreen panel at which the touchscreen panel is contacted within a second conductive region among the conductive regions during the second sequential scanning;

determining whether the detected second contacted position is within or outside a predetermined region around the detected first contacted position; and

determining that a contact with the touchscreen panel has moved on the touchscreen panel from the detected first contacted position to the detected second contacted position in response to determining that the detected second contacted position is within the predetermined region.

2. The position detecting method as claimed in claim 1, further comprising:

determining that the touchscreen panel is newly contacted at the detected second contacted position or that a contact with the touchscreen panel at the detected first contacted position is lost, in response to determining that the detected second contacted position is outside the predetermined region.

3. The position detecting method as claimed in claim 1, further comprising:

determining, when said detecting the first contacted position detects two or more first contacted positions and the detected second contacted position is outside the predetermined region around each of the detected two or more first contacted positions, that the contact with the touchscreen panel has moved from one of the detected two or more first contacted positions closest to the detected second contacted position to the detected second contacted position.

4. The position detecting method as claimed in claim 1, further comprising:

determining, when said detecting the second contacted position detects two or more second contacted positions and the detected two or more second contacted positions are outside the predetermined region around the detected first contacted position, that the contact with the touchscreen panel has moved from the detected first contacted position to one of the detected two or more second contacted positions closest to the detected first contacted position.

5. The position detecting method as claimed in claim 1, further comprising:

determining whether the detected second contacted position is within an additional predetermined region around the detected first contacted position, the additional predetermined region being located lateral to the predetermined region; and

determining that the contact with the touchscreen panel has moved from the detected first contacted position to the detected second contacted position in response to determining that the detected second contacted position is outside the predetermined region but inside the additional predetermined region.

6. The position detecting method as claimed in claim 5, further comprising:

determining, when said detecting the second contacted position detects two or more second contacted positions and the detected two or more second positions are outside the predetermined region but inside the additional predetermined region, that the contact with the touchscreen panel has moved from the detected first contacted position to one of the detected two or more second positions in which an angle of a line connecting the detected first contacted position and the one of the detected two or more second positions relative to a reference vector between the detected first contacted position and a position of the contact detected during a third sequential scanning of the conductive regions prior to the first sequential scanning is smallest.

7. The position detecting method as claimed in claim 1, wherein it is determined whether coordinates of the detected second contacted position are within or outside the predetermined region around coordinates of the detected first contacted position serving as a center in said determining whether the detected second contacted position is within or outside the predetermined region.

8. The position detecting method as claimed in claim 1, wherein it is determined that the contact of a single object with the touchscreen panel has moved on the touchscreen panel in said determining that the contact with the touchscreen panel has moved on the touchscreen panel, the single object including a fingertip.

9. The position detecting method as claimed in claim 1, further comprising:

assigning the detected second contacted position a same ID as assigned to the detected first contacted position in response to determining that the contact with the touchscreen panel has moved on the touchscreen panel from the detected first contacted position to the detected second contacted position.