Method for designing reflection stripes of an acoustic touch screen

• US 7,075,525 B2
• Filed: 10/22/2003
• Issued: 07/11/2006
• Est. Priority Date: 03/11/2003
• Status: Expired due to Fees

• Current Assignee: Onetouch Technologies Co., Ltd.
• Original Assignee: Onetouch Technologies Co., Ltd.
• Inventors: Sha, Yan, Wang, Sunny, Cheng, Eric
• Primary Examiner(s): Shalwala, Bipin
• Assistant Examiner(s): LEWIS, DAVID LEE
• Application Number:
  US10/690,803
• Publication Number:
  US 20040178999A1
• Time in Patent Office: 993 Days
• Field of Search: 345173-183, 178 1801- 1811, 178 1901- 1907, 367/907, 310/313.D
• US Class Current: 345/177
• CPC Class Codes: G06F 3/0436 in which generating transducers and detecting transducers are attached to a single acoustic waves transmission substrate

Abstract

A method for designing reflection stripes of an acoustic touch screen, comprising: dividing a reflection stripe of an acoustic touch screen into a plurality of groups according to an integral times wavelength of an acoustic; according to the distance between said reflection bar increasing principle, increasing the distance between said reflection bars from rear to front; and according to a condition of the transmission loss of a glass surface, cutting the border of said reflection bars in one group with different length.

Claims

1. A method for designing reflection stripes of an acoustic touch screen, wherein said acoustic touch screen has at least one reflection stripe, and each reflection stripe has a plurality of reflection bars, said method comprises the steps of:

dividing each reflection stripe of an acoustic touch screen into a plurality of groups according to an integral times wavelength of an acoustic;

according to the distance between said reflection bars increasing principle, increasing the distance between said reflection bars from rear to front; and

according to a condition of the transmission loss of a glass surface, cutting the border of said reflection bars in one group with different length.

2. A method for designing reflection stripes of an acoustic touch screen as claimed in claim 1, wherein said integral times wavelength is 50 to 60 times wavelength preferably.

3. A method for designing reflection stripes of an acoustic touch screen as claimed in claim 1, wherein said cutting the border of said reflection bars in one group with different length is a ladder-shaped border cutting preferably.

4. A method for designing reflection stripes of an acoustic touch screen as claimed in claim 3, wherein the amount of said cutting the border of said reflection bars in one group with different length is about 10%˜

40% preferably.

5. A method for designing reflection stripes of an acoustic touch screen as claimed in claim 3, wherein said cutting ratio of said ladder-shaped border cutting is about 0.6˜

0.9.

6. A method for designing reflection stripes of an acoustic touch screen as claimed in claim 5, wherein the definition of said cutting ratio of said ladder-shaped border cutting is the density of said glass dividing the loss of said glass.