Liquid crystal display device, method for driving thereof and electronic apparatus

摘要

The liquid crystal display device performs display by changing the number of gray scales depending on external light intensity, and switches the display mode in accordance with a content to be displayed on a display. By controlling a display mode-specific video signal generation circuit depending on external light intensity, an inputted video signal is outputted as an analog value, is outputted with a digital value of a binary, or is outputted with a multiple digital value. As a result, display gradation of a pixel changes timely. Accordingly, a clear image can be displayed. For example, a display device which secures visibility can be obtained in a wide range from under fluorescent light in a dark place or indoor to under outdoor sunlight.

主权项

1. A liquid crystal display device comprising:
a plurality of pixels provided in matrix, each of which comprises a liquid crystal element; a gate driver for supplying gate signals to the plurality of pixels; a source driver for supplying any one of analog video signals and digital video signals to the plurality of pixels; an optical sensor; a display mode-specific video signal generation circuit operationally connected to the optical sensor, the display mode-specific video signal generation circuit comprising a first switch, a second switch, a third switch, and a level conversion circuit, and a first line to a n-th line each electrically connected to the display mode-specific video signal generation circuit, wherein n is a natural number, wherein the second switch and the third switch are each electrically connected to the level conversion circuit, wherein the second switch is electrically connected to the n-th line, wherein the first switch is capable of turning on so that the display mode-specific video signal generation circuit supplies the analog video signals to the source driver in a first display mode, wherein the second switch and the third switch are capable of turning on so that the display mode-specific video signal generation circuit supplies the digital video signals to the source driver in a second display mode, and wherein the first display mode and the second display mode are switched according to an external light intensity.