Pixel driving circuit and driving method, display driving circuit, display substrate and display device

Abstract

The present invention opens a pixel driver circuit and drive method, display driving circuit, display substrate and display device, which involves the field of display technology. Under the premise of simplifying the pixel -driven circuit structure, the constant current driver of the light emitting device is realized.The pixel drive circuit includes: the current control module for providing constant stream signals and turning on signals, which is used to control the current switch module transmitted to the transmission of the constant stream signal to the light emitting device under the control of the signal.The control module provides a constant stream signal and an grounding control module that enables the signal.The display driving circuit includes the pixel drive circuit described in at least one of the above technical schemes.The pixel drive circuit and driver method provided by the present invention, display driving circuit, display substrate, and display device are used to drive the display device display screen.

Description

technical field [0001] The invention relates to the technical field of OLED display, in particular to a pixel driving circuit and a driving method, a display driving circuit and a driving method, a display substrate and a display device. Background technique [0002] Organic light-emitting diode (Organic Light-Emitting Diode, OLED for short) display device is a display device that can realize self-illumination, wide viewing angle and high contrast ratio, and is favored and concerned by the public. [0003] When the OLED display device is displaying, the pixel driving circuit in the OLED display device drives the OLED light-emitting device of the corresponding sub-pixel to emit light, so that the OLED display device realizes image display without a backlight. However, the existing OLED light-emitting device is a current-driven device, and its brightness and current are approximately in a linear relationship. Therefore, using a constant current source to drive the OLED light-e...

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Problems solved by technology

[0004] In order to solve the above problems, it is generally necessary to design the pixel drive circuit so that the output current remains constant. However, the pixel drive circuit designed in the prior art has many electronic devices and a complex structure, which makes it difficult to manufacture the pixel drive circuit. increase

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