Organic light emitting display device including EM driver with simplified structure and for driving the same
AssigneeLG Display Co., Ltd.
InventorDaeSung Jung
Life of this patent
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Abstract
The present disclosure relates to an organic light emitting display device and a device for driving the same. The present provides the organic light emitting display device that enables implementation of a narrow bezel and easy implementation of a circuit by simplifying a structure of an EM driver, and a device for driving the same.
Claims23
An organic light emitting display device, comprising:
- a display panel in which pixels are disposed in a matrix form;
- a data driver that supplies a data voltage to the display panel;
- a scan driver that supplies a scan signal to the display panel and synchronized with the data voltage;
- a timing controller that generates a timing control signal for controlling an operation timing of the data driver and an operation timing of the scan driver;
- and
- a duty driver that generates an EM signal for controlling on and off of pixels in response to the timing control signal including a shift clock and operates the EM signal at a high voltage level in response to a high signal of a start pulse for controlling an output generation and operates the EM signal at a low voltage level in response to a low signal of the start pulse to regulate a cycle and a width of the EM signal,
- wherein the shift clock includes a first signal clock CLK1 and a second signal clock CLK2 that have a same pulse width and an opposite phase with each other, and the first signal clock CLK1 is turned on and off with a difference of one half cycle from the second signal clock CLK2 throughout an operation timing of the duty driver.
A device for driving an organic light emitting display device including pixels which are turned on and off during a duty driving period in response to an EM signal, the device comprising:
- a duty driver that receives a shift clock and generates the EM signal for controlling an operation of the pixels, and operates the EM signal at a high voltage level in response to a high signal of a start pulse for controlling an output generation and operates the EM signal at a low voltage level in response to a low signal of the start pulse to regulate a cycle and a width of the EM signal,
- wherein the shift clock includes a first signal clock CLK1 and a second signal clock CLK2 that have a same pulse width and an opposite phase with each other, and the first signal clock CLK1 is turned on and off with a difference of one half cycle from the second signal clock CLK2 throughout an operation timing of the duty driver.
An apparatus for driving an organic light emitting display device comprising a plurality of pixels operating during a duty driving period in response to an EM signal, the apparatus comprising:
- a duty driver receiving a start pulse of an off-level voltage and a shift clock of an on-level voltage, and outputting the EM signal and shifting the EM signal at a shift clock timing in operating the plurality of pixels, wherein the duty driver operates the EM signal at an off level when the start pulse is input, and a width of the EM signal is determined by a width of the start pulse,
- wherein the shift clock includes a first signal clock CLK1 and a second signal clock CLK2 that have a same pulse width and an opposite phase with each other, and the first signal clock CLK1 is turned on and off with a difference of one half cycle from the second signal clock CLK2 throughout an operation timing of the duty driver.
Dependencies are inferred from the claim text.