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AssigneeKorea Advanced Institute of Science and Technology
InventorsGyu-Hyeong Cho, Young-Suk Son, Sang-Kyung Kim, Min-Chul Lee
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Disclosed herein are a pixel circuit and driving method for active matrix Organic Light-emitting Diodes (OLEDs), and a display using the same. The pixel circuit includes a Voltage Control Current Source (VCCS), a high gain amplifier, a storage capacitor, and first and second switches. The VCCS is configured to drive OLEDs. The high gain amplifier is configured such that the control input signal of the VCCS causes the VCCS to be placed in an ON or OFF state. The storage capacitor is located between the input terminal of the high gain amplifier and a data line so as to assign the ON-time of the VCCS. The first and second switches are configured to be controlled through a scan line so as to store voltage in the storage capacitor and control the light-emitting time of the OLEDs, and are formed the input terminal of the high gain amplifier and the input terminal of the VCCS, respectively.
A pixel circuit for active matrix Organic Light-emitting Diodes (OLEDS) comprising:
A method of driving a pixel circuit for active matrix OLEDs, comprising the step of using a sawtooth wave as a data line signal that controls a light-emitting period, so as to use a scan line not only as a control signal line for selecting a arbitrary pixel during data programming for indicating a gray level of the pixel but also as a reset control signal line.
A display using a pixel circuit for active matrix OLEDs, comprising:
Dependencies are inferred from the claim text.