Invention Grant
- Patent Title: Architecture and driving methods for minimizing power losses in touch panel
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Application No.: US15199332Application Date: 2016-06-30
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Publication No.: US10540040B2Publication Date: 2020-01-21
- Inventor: Yannick Guedon
- Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD
- Applicant Address: SG Singapore
- Assignee: STMICROELECTRONICS ASIA PACIFIC PTE LTD
- Current Assignee: STMICROELECTRONICS ASIA PACIFIC PTE LTD
- Current Assignee Address: SG Singapore
- Agency: Seed Intellectual Property Law Group LLP
- Main IPC: G06F3/041
- IPC: G06F3/041 ; G06F1/32 ; G06F3/044 ; G06F1/16 ; G06F1/3234

Abstract:
Dual power supply and energy recovery techniques are used in a capacitive touch panel that employs a concurrent drive scheme. A dual supply output buffer boosts a capacitor from an intermediate voltage level to a high voltage level. Energy recovery exchanges stored energy between a capacitor and an inductor. When both techniques are used together, power consumption of a capacitive touch panel drive circuit can be reduced dramatically, by as much as about 80%. Such high efficiency touch panels have wide application to ultra-thin touch screens, including those suitable for use in mobile devices and flexible displays.
Public/Granted literature
- US20180004347A1 LOW POWER TOUCH SCREEN Public/Granted day:2018-01-04
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