Abstract
The paper-like cholesteric liquid crystal display (Ch-LCD) has become the next generation of electronic readers in consuming market. The embedded fully symmetric self-biased switched-capacitor (FSSBSC) with single-inductor high voltage bipolar-output (SIHBO) converter is proposed to achieve the energy and area-efficient driving scheme. As the compact power management module, SIHBO converter can provide +/−35V bipolar outputs for row driving. In addition, the embedded FSSBSC is utilized to generate the different voltage levels for modulating the gray-color in column driving scheme. This combination carries out the effective driving operation for Ch-LCD through the demand of timing control unit. Simulated results show the achievement of +/−35V output voltage in the SIHBO converter and the variety voltage levels generated from FSSBSC. The peak efficiency is derived of 85% with the integrated chip area of 6.53 mm2.
Original language | English |
---|---|
Journal | Digest of Technical Papers - SID International Symposium |
Volume | 43 |
Issue number | 1 |
DOIs | |
State | Published - 1 Jan 2012 |
Event | 49th SID International Symposium, Seminar and Exhibition, dubbed Display Week, 2012 - Boston, United States Duration: 3 Jun 2012 → 8 Jun 2012 |
Keywords
- Cholesteric liquid crystal display (Ch-LCD)
- Fully symmetric self-biased switching capacitor
- Power management
- Single-inductor high-voltage bipolar-output (SIHBO) converter