US 2006/0139276 A1 · Data driving integrated circuit (IC), light emitting display using the IC, and method of driving the light emitting display

Abstract

A data driving integrated circuit to display an image with a desired brightness includes: a shift register adapted to generate sampling signals in sequence; a latch adapted to store external data in response to the sampling signal; a register adapted to temporarily store the data stored in the latch; a voltage digital-analog converter adapted to generate a gradation voltage corresponding to the data stored in the register; a current digital-analog converter adapted to generate a gradation current corresponding to the data stored in the register; a buffer adapted to supply the gradation voltage as a data signal to a pixel; and a data controller adapted to receive a pixel current flowing in the pixel in correspondence to the gradation voltage and fed back from the pixel and to adjust a bit value of the data stored in the register.

Claims18

Dependent claims

A data driving integrated circuit, comprising:

a shift register adapted to generate sampling signals in sequence;
a latch adapted to store external data in response to the sampling signal;
a register adapted to temporarily store the data stored in the latch;
a voltage digital-analog converter adapted to generate a gradation voltage corresponding to the data stored in the register;
a current digital-analog converter adapted to generate a gradation current corresponding to the data stored in the register;
a buffer adapted to supply the gradation voltage as a data signal to a pixel;
and
a data controller adapted to receive a pixel current flowing in the pixel in correspondence to the gradation voltage and fed back from the pixel and to adjust a bit value of the data stored in the register.

5 more elements

A light emitting display, comprising:

a plurality of scan lines;
a plurality of data lines and feedback lines arranged to intersect the scan lines;
a pixel portion including a plurality of pixels connected to the scan lines, the data lines and the feedback lines;
a scan driver adapted to supply scan signals to the scan lines in sequence;
and
a data driver connected to the data line and the feedback lines and adapted to convert external data into a gradation voltage, and to supply the gradation voltage to the data line;
wherein the data driver is adapted to receive a pixel current flowing in each pixel corresponding to the gradation voltage, and to adjust a bit value of the data in accordance with the received pixel current.

4 more elements

Dependencies are inferred from the claim text.

Data driving integrated circuit (IC), light emitting display using the IC, and method of driving the light emitting display

Life of this patent

Data driving integrated circuit (IC), light emitting display using the IC, and method of driving the light emitting display

Life of this patent

Abstract

Claims18