초록 ▼

A pixel structure for use in a display using organic light emitting diodes (O-LEDs) is described. Each pixel structure of an overall array includes an organic light emitting diode (O-LED). Additionally, the structure includes circuitry for allowing the structure to operate in three basic modes: writ

A pixel structure for use in a display using organic light emitting diodes (O-LEDs) is described. Each pixel structure of an overall array includes an organic light emitting diode (O-LED). Additionally, the structure includes circuitry for allowing the structure to operate in three basic modes: write select mode, write deselect mode and an illuminate mode. Hence, the structure includes circuitry for causing the pixel structure to be selected such that data can be written to the pixel structure, said data representative of a programmed current level to be applied to the O-LED; circuitry for causing the pixel structure to be deselected when a pixel structure in a different row is having data written thereto; and circuitry for applying the programmed current level to the OLED, causing the O-LED to illuminate.

대표청구항 ▼

[ What is claimed:] [8.] An array of pixel structures, coupled to a digital current source, each pixel structure comprising:first and second data lines;first and second select lines;first and second transistors, each transistor having a source electrode, a gate electrode and a drain electrode;a capa

[ What is claimed:] [8.] An array of pixel structures, coupled to a digital current source, each pixel structure comprising:first and second data lines;first and second select lines;first and second transistors, each transistor having a source electrode, a gate electrode and a drain electrode;a capacitor;an organic light emitting diode (O-LED),wherein the source electrode of the first transistor is coupled to the first data line, the source electrode of the second transistor is coupled to the second data line, the gate electrode of the first transistor is coupled to the first select line, the gate electrode of the second transistor is coupled to the drain electrode of the first transistor and to the second select line by way of the capacitor, the drain electrode of the second transistor coupled to the O-LED; andmeans, coupled to the first and second data lines, for driving each pixel structure in the array in three modes including a write select mode, a write deselect mode and an illuminate mode, wherein the write select mode causes the pixel structure to be selected such that a programmed current level can be established in the pixel structure, said programmed current level representative of a desired brightness to be displayed on the O-LED, the write deselect mode causes the pixel structure to be deselected when a pixel structure in a different row is having data written thereto, and the illuminate mode causes the O-LED to be driven at the programmed current level causing the pixel to illuminate.