Invention Grant
- Patent Title: Dynamic voltage generation for touch-enabled displays
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Application No.: US14847404Application Date: 2015-09-08
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Publication No.: US10042459B2Publication Date: 2018-08-07
- Inventor: Christoph H. Krah , Yafei Bi , Kevin J. White
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Morrison and Foerster LLP
- Main IPC: G06F3/041
- IPC: G06F3/041 ; G06F3/044

Abstract:
The disclosed embodiments relate to a system that provides power for a touch-enabled display, wherein the touch-enabled display cycles between a display mode and a touch mode. During the display mode, the system drives a display-mode voltage to the touch-enabled display through a power output, wherein the power output is coupled through a display-mode capacitor CD to ground. Next, during a transition from the display mode to the touch mode, the system couples the power output through a touch-mode capacitor CT to ground, wherein CT was previously charged to a touch-mode voltage, which causes the power output to rapidly transition to the touch-mode voltage. Then, during the touch mode, the system drives the touch-mode voltage through the power output.
Public/Granted literature
- US20160224172A1 Dynamic Voltage Generation For Touch-Enabled Displays Public/Granted day:2016-08-04
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