Liquid crystal driving device
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
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Mar 24, 2020
Grant Date -
Mar 21, 2019
app pub date -
Feb 8, 2017
filing date -
Feb 8, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A liquid-crystal driving device is formed by integrating: an external output terminal to which a source line of an LCD panel is exteriorly connected; a first driver which generates a first source signal having three or more gradations (for example, 256 gradations) and outputs the first source signal to the external output terminal; an abnormality detection unit (a logic unit and an output monitor unit) which detects an abnormality in the first source signal; and a second driver which, when an abnormality in the first source signal is detected, generates a second source signa) having two gradations and outputs the second source signal to the external output terminal. The LCD panel is driven in a predetermined polarity inversion drive system, and the abnormality detection unit, for example, monitors polarity inversion of the first source signal in a fly-back period and detects an abnormality in the first source signal.
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