Driving circuit design for display device
OwnerChih-Feng Sunginventor
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Abstract
A driving circuit design for a display device. This invention uses the voltage-driven circuit of a conventional TFT-LCD such that the pixel is capable of outputting a different driving current to each OLED having a characteristic red, green or blue coloration under identical data voltage conditions. Different driving currents are produced by adjusting channel width/length ratio of the TFT driver in each pixel. Consequently, an appropriate luminance ratio between red, green and blue lights may be set to reproduce white light through the red, green and blue OLED and hence attain full coloration.
Claims12
A driving circuit design for a display device having a plurality of pixels with each pixel including a driving thin film transistor and an organic light emitting diode, the design comprising:
- each pixel receiving an identical data voltage;
- and
- modifying the driving current generated by the driving thin film transistor through the adjustment of the width/length ratio of the driving thin film transistor so that the luminance of red light emitted from a red organic light emitting diode, the luminance of green light emitted from a green organic light emitting diode and the luminance of blue light emitted from a blue light emitting diode are in such a ratio that white light is produced and full coloration is attained.
Dependencies are inferred from the claim text.