Organic light emitting display device with auxiliary pixels to repair defective display pixels
AssigneeSamsung Display Co., Ltd.
InventorsKyong-Tae Park, Dong-Yoon So, Sung-Ho Cho, Yu-Hyun Cho
Life of this patent
Estimating the term…
Abstract
An organic light emitting display device includes a display area and a non-display area. The display area includes display pixels at crossing areas of data lines, scan lines, and emission control lines. The non-display area includes auxiliary pixels at crossing positions of auxiliary data lines, scan lines, and emission control lines. The display device also includes a scan driver to supply scan signals to the scan lines, a first data driver to supply data voltages to the data lines, a second data driver to supply an auxiliary data voltage to the auxiliary data line, and a demultiplexer between the data lines and the first data driver.
Claims5
An apparatus, comprising:
- a first data driver to supply data voltage to one data line;
- a second data driver to supply an auxiliary data voltage to one auxiliary data line;
- a display pixel connected to the one data line, two scan lines, and one emission control line;
- an auxiliary pixel connected to the one auxiliary data line, two scan lines, and one emission control line,
- a demultiplexer between the one data line and the first data driver, and
- an auxiliary circuit between the one auxiliary data line and the second data driver, the auxiliary circuit including one or more auxiliary transistors connected between the one auxiliary data line and an output buffer of the second data driver,
- wherein a coupling capacitance between the second data driver and the auxiliary pixel is substantially equal to a coupling capacitance between the first data driver and the display pixel, and
- wherein the auxiliary pixel is to control emission of light from the display pixel when the display pixel is defective.
Dependencies are inferred from the claim text.