ELECTROMAGNETIC TOUCH DISPLAYER

• US 20110227837A1
• Filed: 08/10/2010
• Published: 09/22/2011
• Est. Priority Date: 03/16/2010
• Status: Abandoned Application

• Current Assignee: E Ink Holdings Incorporated
• Original Assignee: E Ink Holdings Incorporated
• Inventors: Yeh, Feng-Chuan, Lee, Cheng-Hao, Wang, Tzu-Ming, Chuang, Kai-Cheng
• Application Number:
  US12/853,894
• Publication Number:
  US 20110227837A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 1/3262 Power saving in digitizer or tablet
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

An electromagnetic touch displayer is provided. The electromagnetic touch displayer may work with an electromagnetic signal transmission apparatus. The electromagnetic touch displayer comprises a plurality of sense antennas. When the electromagnetic touch displayer enters into a sleep mode, a part of the sense antennas will keep in the work mode. If the user wants to wake the electromagnetic touch displayer up to make it into the work mode, he will make the electromagnetic signal transmission apparatus transmit an electromagnetic signal. Then, the electromagnetic touch displayer receives the electromagnetic signal via the sense antennas which are still working, and enters into the work mode according to the electromagnetic signal.

Claims

1. An electromagnetic touch displayer adapted to work with an electromagnetic signal transmission apparatus, the electromagnetic signal transmission apparatus being adapted to transmit an electromagnetic signal, the electromagnetic touch displayer comprising:

an electromagnetic touch circuit;

a first sense antenna group, being electrically connected to the electromagnetic touch circuit and in a sleep mode; and

a second sense antenna group, being electrically connected to the electromagnetic touch circuit and in a work mode to receive the electromagnetic signal,

wherein the electromagnetic touch circuit generates an enable signal to the first sense antenna group according to the electromagnetic signal so that the first sense antenna group switches into the work mode from the sleep mode according to the enable signal.

2. The electromagnetic touch displayer as claimed in claim 1, wherein the second sense antenna group has an effective receiving range and may receive the electromagnetic signal when the electromagnetic signal transmission apparatus is located within the effective receiving range.

3. The electromagnetic touch displayer as claimed in claim 1, further comprising a flexible circuit board, wherein the first sense antenna group and the second sense antenna group are electrically connected to the electromagnetic touch circuit through the flexible circuit board so that the second sense antenna group may transmit the electromagnetic signal to the electromagnetic touch circuit through the flexible circuit board, and the electromagnetic touch circuit may transmit the enable signal to the first sense antenna group through the flexible circuit board.

4. The electromagnetic touch displayer as claimed in claim 1, further comprising a display control circuit electrically connected to the electromagnetic touch circuit and in the sleep mode, wherein the electromagnetic touch circuit is further configured to transmit the enable signal to the display control circuit, and the display control circuit is configured to switch into the work mode from the sleep mode according to the enable signal.

5. The electromagnetic touch displayer as claimed in claim 4, further comprising a flexible circuit board, wherein the display control circuit is electrically connected to the electromagnetic touch circuit through the flexible circuit board so that the electromagnetic touch circuit may transmit the enable signal to the display control circuit through the flexible circuit board.