Light-emitting control circuit, light-emitting control method and shift register

Abstract

The invention provides a light-emitting control circuit, a light-emitting control method and a shift register. The light-emitting control circuit comprises an input terminal, an input sampling unit, an output unit, a reset unit, an output pulling-down unit and a light-emitting control signal output terminal, wherein the input sampling unit is used for sampling an input signal under the control of a first clock signal, the output unit generates a light-emitting control signal under the control of a second clock signal after the input signal is sampled by the input sampling unit, and the reset unit is used for resetting the light-emitting control signal under the control of a third clock signal through the output pulling-down unit. The invention can ensure that an OLED (Organic Light Emitting Diode) device is in a closed state in a process of writing display data into a pixel unit, and after the display data are written into the pixel unit, the OLED device is switched on to emit light so as to ensure that a display image cannot flicker due to the unstable state of a pixel circuit when the data are written into the pixel unit.

Description

technical field [0001] The invention relates to the field of organic light-emitting display, in particular to a light-emitting control circuit, a light-emitting control method and a shift register. Background technique [0002] Organic light-emitting display diodes (OLEDs) have been increasingly used in high-performance displays due to their advantages such as high brightness, wide viewing angle, and fast response speed. Traditional passive matrix organic light-emitting display diodes (PMOLED) require a shorter driving time of a single pixel as the display size increases, so it is necessary to increase the transient current and increase power consumption; at the same time, the application of high current will cause ITO The voltage drop on the line is too large, and the OLED operating voltage is too high, thereby reducing its efficiency. The active matrix organic light-emitting display diode (AMOLED) can solve these problems well by scanning the switching tubes to input OLED...

AI Technical Summary

Problems solved by technology

Traditional passive matrix organic light-emitting display diodes (PMOLED) require a shorter driving time of a single pixel as the display size increases, so it is necessary to increase the transient current and increase power consumption; at the same time, the application of high current will cause ITO The voltage drop on the line is too large, and the OLED operating voltage is too high, thereby reducing its efficiency

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