×

Active matrix display devices and electronic devices having the same

  • US 8,487,967 B2
  • Filed: 08/16/2010
  • Issued: 07/16/2013
  • Est. Priority Date: 08/17/2009
  • Status: Active Grant
First Claim
Patent Images

1. An active matrix display device which comprises a plurality of pixels arranged in a matrix and a backlight source disposed at the backside of the matrix and emitting light to the matrix, wherein each of the pixels comprises:

  • a liquid crystal element;

    a driving controlling switch for controlling the driving of the liquid crystal element; and

    a storage capacitor for storing image data provided to the liquid crystal element through the driving controlling switch;

    wherein the display device further comprises;

    a luminance detector for detecting luminance of the backlight source;

    a first voltage supplier, wherein according to the detected luminance of the backlight source, the first voltage supplier, in a sustain period of the image data, provides a predetermined voltage to a node of the storage capacitor which is opposite to a node of the storage capacitor coupled to the liquid crystal element; and

    a temperature detector for detecting temperature;

    wherein the first voltage supplier comprises;

    a variable voltage supply source;

    a voltage calculator for calculating the first predetermined voltage according to the detected luminance of the backlight source by the luminance detector; and

    a voltage source controller for controlling the variable voltage supply source which provides the first predetermined voltage which is calculated by the voltage calculator;

    wherein the voltage calculator calculates the first predetermined voltage according to the luminance of the backlight source detected by the luminance detector and the temperature detected by the temperature detector.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×