Organic light emitting display panel and driving method thereof, and organic light emitting display apparatus

Abstract

The invention discloses an organic light emitting display panel and a driving method thereof, and an organic light emitting display apparatus. The organic light emitting display panel comprises a pixel matrix. The pixel matrix comprises a plurality of pixel driving circuits which are arranged in a matrix mode, a plurality of reference voltage signal lines, a plurality of data lines, a plurality of light emitting signal lines, a plurality of first scanning signal lines and a plurality of second scanning signal lines. The plurality of pixel driving circuits comprise a first pixel driving circuit and a second pixel driving circuit. The first pixel driving circuit and the second pixel driving circuit are adjacent along a row direction of the pixel matrix. The first pixel driving circuit is electrically connected to the plurality of first scanning signal lines. The second pixel driving circuit is electrically connected to the plurality of second scanning signal lines. The first pixel driving circuit and the second pixel driving circuit are connected into a same data line. The first pixel driving circuit and the second pixel driving circuit share one light emitting control module. By using the organic light emitting display panel and the driving method thereof, and the organic light emitting display apparatus of the invention, a driving load can be reduced.

Description

technical field [0001] The present application relates to the field of display technology, in particular to an organic light emitting display panel, a driving method thereof, and an organic light emitting display device. Background technique [0002] Organic light-emitting displays use the self-luminous properties of organic semiconductor materials for display, and have the advantages of high contrast and low power consumption. Generally, a pixel array composed of sub-pixels is arranged in a display area of ​​an organic light emitting display. Each sub-pixel includes an organic light emitting diode and a driving transistor for driving the organic light emitting diode to emit light. The light-emitting current of an organic light-emitting diode is related to the voltage difference Vgs between the gate and source of the driving transistor and the threshold voltage Vth of the driving transistor, but the threshold voltage Vth of the driving transistor will drift due to the proce...

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned existing organic light-emitting display panel, the reference voltage signal line is used not only to provide the initialization signal and the driving signal, but also to collect the threshold voltage, and its working state is unstable; The same reference voltage signal line can be used for signal writing and threshold voltage acquisition, and the working status of each reference voltage signal line needs to be switched multiple times within the time of displaying a frame, which increases the number of controls used to control the reference voltage signal line. Driver chip load

In addition, multiple sub-pixels connected to the same reference voltage signal line are located in different positions, and the threshold voltages of the drive transistors at different positions returned by the reference voltage signal line to the drive chip have a certain voltage drop. For the same sub-pixel, the voltage variation of the data signal transmitted by the data line is inconsistent with the variation of the threshold voltage collected by the reference voltage signal line and transmitted to the driver chip, which makes it difficult to maintain the accuracy and accuracy of the display brightness of each sub-pixel. balance

Images