Patent ID: 8749470
Filing Date: 2014-06-10
Classification: G09G

Abstract:
1. A display device comprising: a display panel on which a plurality of display pixels are provided; a backlight illuminating said display panel; and a display panel driver driving said display panel, wherein said display panel driver externally receives image data and a clock signal for controlling timings of receiving said image data, wherein said display panel driver includesa backlight controller generating a Pulse Width Modulation (PWM)-modulated drive signal to drive said backlight, wherein said display panel driver externally receives vertical and horizontal sync signals, and said clock signal externally received by said display panel driver comprises a dot clock signal, wherein said display panel driver further includes: wherein a frequency of said PWM-modulated drive signal is dependent on a frequency-divided clock signal generated by frequency dividing of said dot clock signal externally received, and wherein said size recognition circuit generates said frequency-divided clock signal in response to said recognized horizontal resolution so that said frequency of said PWM-modulated drive signal is kept constant when a frequency of said dot clock signal externally received is switched.