EP 1700186 A2 20060913 - ACOUSTIC WAVE TOUCH DETECTING APPARATUS
Title (en)
ACOUSTIC WAVE TOUCH DETECTING APPARATUS
Title (de)
OBERFLÄCHENWELLEN-BERÜHRUNGSDETEKTIONSVORRICHTUNG
Title (fr)
APPAREIL DE DETECTION TACTILE D'ONDES ACOUSTIQUES
Publication
Application
Priority
- US 2004037492 W 20041110
- US 71287403 A 20031112
Abstract (en)
[origin: WO2005050363A2] Two groups of inclined lines (16, 20), which are included in a spurious wave scattering means, are formed at opposite angles with respect to each other in the vicinity of an upper edge of a substrate (2). The angles of the inclined lines are such that they are close to perpendicular toward the central portion of the substrate, and gradually decrease toward the edges thereof. In a similar manner, two other groups of inclined lines (26, 30), which are also included in the spurious wave scattering means, are formed at opposite angles with respect to each other, with gradually changing angles. The spurious waves that reach these regions are diffused by the inclined lines, so that they are not propagated to converters (sensors) (12, 14). Three rectangular spurious wave scattering means (34, 36, 38), formed by inclined lines, inclined at angles other than 45°, also function to diffuse and eliminate spurious waves that propagate along the front surface of the substrate.
IPC 8 full level
G06F 3/033 (2006.01)
IPC 8 main group level
G06F (2006.01)
CPC (source: EP KR)
G06F 3/043 (2013.01 - KR); G06F 3/0436 (2013.01 - EP)
Citation (search report)
See references of WO 2005050363A2
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 2005050363 A2 20050602; WO 2005050363 A3 20060817; CN 100380298 C 20080409; CN 1950787 A 20070418; EP 1700186 A2 20060913; JP 2007511015 A 20070426; JP 4628367 B2 20110209; KR 20070011247 A 20070124; TW 200530922 A 20050916
DOCDB simple family (application)
US 2004037492 W 20041110; CN 200480039872 A 20041110; EP 04819077 A 20041110; JP 2006539801 A 20041110; KR 20067011498 A 20060612; TW 93134183 A 20041109