Patent ID: 6515428
Filing Date: 2003-02-04
Classification: H01L

Abstract:
A pixel structure of an organic light-emitting diode (OLED) display device comprising:a substrate having top and bottom surfaces; a first thin film transistor having a source electrode, a drain electrode and a gate electrode, said source electrode of said first thin film transistor being electrically connected to a data line, and said gate electrode comprising a portion of a gate line; a second thin film transistor having a source electrode, a drain electrode and a gate electrode, said gate electrode of said second thin film transistor being electrically connected to said drain electrode of said first thin film transistor; a storage capacitor, said storage capacitor being connected in series with said first thin film transistor and being electrically connected to said gate electrode of said second thin film transistor; a color filter being formed in the pixel region of said display device; a black matrix region being deposited under said second thin film transistor and outside said color filter region to reduce the leakage of light and increase the contrast of said display device; and an OLED device structure comprising an anode electrode layer and a cathode metal layer and being constructed on the top surface of said substrate, said anode electrode of said OLED device structure being electrically connected to said drain electrode of said second thin film transistor and being connected in series with said second thin film transistor, via said color filter to get red, green and blue colors of light to form said OLED device of full color; wherein said black matrix region are deposited over the top surface of said substrate, said first and second thin film transistors, said storage capacitor and said color filter are all formed above said black matrix region and below said OLED device structure.