Cholesteric liquid crystal display device and method for driving the same
US12334031B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2024 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Apr 10, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a method for driving a cholesteric liquid crystal display device. The method includes the following steps: utilizing a driving circuit section to sequentially activate each scanning electrode within a display panel; utilizing the driving circuit section to apply first alternating-current (AC) voltage pulses to pixel circuits on an activated scanning electrode during a first stage within a pulse-width modulation (PWM) scanning procedure of an activated scanning electrode; and utilizing the driving circuit section to apply second AC voltage pulses to the pixel circuits on the activated scanning electrode during a second stage of the PWM scanning procedure. A first voltage amplitude and a first period of the first AC voltage pulses are different from a second voltage amplitude and a second period of the second AC voltage pulses, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.