Pixel circuit, display device and display driving method

• Main Authors: WANG CUICUI, ZHANG SHENGDONG, LENG CHUANLI
• Format: Patent
• Language: English
• Published: 26.08.2015
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CRYPTOGRAPHY; DISPLAY; EDUCATION; PHYSICS; SEALS

The application discloses a pixel circuit, a display device and a display driving method. The pixel circuit of the application generates the information relevant with a first threshold voltage of a driving transistor in a current bias manner, generates the reference voltages relevant with the first threshold voltage and the gray information at the two ends of a first capacitor by the voltage division of the first capacitor and a second capacitor, and during an luminescence process, enables the reference voltages at the two ends of the first capacitor to be constant, so that a driving current flowing through a light-emitting device is irrelevant with the first threshold voltage of the driving transistor and a second threshold voltage of the light-emitting device. The pixel circuit can compensate the threshold voltage shift of the driving transistor and the light-emitting device, and also can compensate the uneven display problem caused by the different driving transistor threshold voltages of a display panel.