Device and method for improving contrast ratio of display panel and image display system

摘要

A contrast ratio improving device includes a controller and a photo detector. A contrast ratio improving method for use with a display panel includes the following steps. Firstly, multiple voltage values are applied to the display panel. Then, the brightness values corresponding to the voltage values applied to the display panel are detected. Afterwards, a voltage value corresponding to a specified value of the brightness values is selected as a peak voltage of the display panel. An image display system is also provided. The image display system includes a display panel and a memory. The memory stores a peak voltage obtained by the contrast ratio improving method.

主权项

1. A contrast ratio improving method for use with a liquid crystal display panel, the contrast ratio improving method comprising steps of:
applying multiple voltage values to the liquid crystal display panel; detecting brightness values corresponding to the voltage values applied to the liquid crystal display panel; and selecting, among the voltage values in a reverse voltage region, a voltage value corresponding to a minimum value of the brightness values as a black voltage of the liquid crystal display panel.