Pixel, organic light emitting display device including the same, and method of operating of the organic light emitting display device
AssigneeSamsung Display Co., Ltd.
InventorSang-Jin PAK
Life of this patent
Estimating the term…
Abstract
An organic light emitting display device includes a plurality of data lines, a scan driver, a sensing control line driver, a data driver, and a switching unit. The scan driver supplies a scan signal to a plurality of scan lines. The sensing control line driver supplies a sensing control signal to a plurality of sensing control lines. The data driver supplies a data signal to a plurality of data output lines. The switching unit selectively couples each data line to one of a corresponding data output line and a corresponding sensing line. The switching unit further selectively supplies a write control signal to each write control line.
Claims17
A pixel comprising:
- an organic light emitting diode;
- precharge circuit configured to charge a first voltage corresponding to a data signal supplied through a data line when a scan signal is supplied through a scan line;
- a pixel circuit configured to charge a second voltage corresponding to the first voltage when a write control signal is supplied through a write control line, and to supply current corresponding to the charged second voltage from a first power source to a second power source via the organic light emitting diode;
- and
- a sensing control circuit configured to couple the data line to an anode electrode of the organic light emitting diode, in response to a sensing control signal supplied through a sensing control line.
An organic light emitting display device, comprising:
- a plurality of data lines;
- a scan driver configured to supply a scan signal to a plurality of scan lines;
- a sensing control line driver configured to supply a sensing control signal to a plurality of sensing control lines;
- a data driver configured to supply a data signal to a plurality of data output lines;
- and
- a switching unit configured to selectively couple each data line to one of a corresponding data output line and a corresponding sensing line and to selectively supply a write control signal to each write control line.
An organic light emitting display device, further comprising a pixel disposed at an intersection of an i-th data line of the plurality of the data lines and a j-th (j is a natural number) scan line of the plurality of the scan lines, the pixel includes:
- an organic light emitting diode;
- a precharge circuit configured to charge a first voltage corresponding to a data signal supplied through the i-th data line when a scan signal is supplied through the j-th scan line;
- a pixel circuit configured to charge a second voltage corresponding to the first voltage when a write control signal is supplied through an i-th write control line of the plurality of the write control lines, and supply current corresponding to the charged second voltage from a first power source to a second power source via the organic light emitting diode, wherein the i-th write control line is extended in parallel to the i-th data line;
- and
- a sensing control circuit configured to couple the i-th data line and an anode electrode of the organic light emitting diode in response to a sensing control signal supplied through a j-th sensing control line of the plurality of the sensing control line.
A method of driving an organic light emitting display, the method comprising:
- generating a write control signal;
- selectively not supplying the write control signal to one write control signal line of a plurality of a control signal lines and supplying the write control signal to remaining write control signal lines of the plurality of the control signal lines;
- emitting light from first pixels based on first data signals of first data lines corresponding to the remaining write control signal lines;
- and
- sensing degradation information of an organic light emitting diode or threshold voltage/mobility information of a driving transistor of each of second pixels of a second data line corresponding to the one write control signal that does not supply the write control signal, wherein the second pixels do not emit light.
Dependencies are inferred from the claim text.