Patent ID: 7538749
Filing Date: 2009-05-26
Classification: G09G

Abstract:
1. An electro-luminescence display device, comprising: a display panel having pixels light-emitted by a supplied current; a data driver for applying a data voltage corresponding to said current to the pixels; a timing controller for dividing one frame into a plurality of sub-frames and applying a digital data corresponding to each of the plurality of sub-frames to the data driver and for controlling an emission time of each frame; and a photo sensor for detecting a brightness of the external environment of the display panel, wherein the timing controller modulates the digital data to be applied to the data driver in response to a brightness signal from the photo sensor, wherein the timing controller comprises: a selection signal generator for generating a selection signal in response to a brightness signal detected from the photo sensor; a first data converter for converting N-bit data (wherein N is an integer) inputted from the exterior thereof into a first M-bit data (wherein M is an integer larger than N) to be applied to the data driver; a second data converter for converting said N-bit data inputted from the exterior thereof into a second M-bit data to be applied to the data driver, wherein a number of gray levels of the second M-bit data are less than that of the first M bit data; and a selector for selectively applying said N-bit data to any one of the first and second converters in response to said selection signal.