Light emission control circuit, light emission control method and shift register

Abstract

A light emitting control circuit, a light emitting control method, and a shift register. The light emitting control circuit comprises an input end (input), an input sampling unit (11), an output unit (12), a reset unit (13), and a light emitting control signal output end (EM[n]). The input sampling unit (11) samples an input signal under the control of a first clock signal (CK1). The output unit (12) generates a light emitting control signal under the control of a second clock signal (CK2) after the input sampling unit (11) samples the input signal. The reset unit (13) resets the light emitting control signal under the control of a third clock signal (CK3) after the output unit (12) generates the light emitting control signal. The light emitting control circuit and the light emitting control method can ensure that an OLED device is in a closed state in a process of writing display data into a pixel unit, and the OLED device is switched on to emit light after the display data is written into the pixel unit, thereby ensuring that a display image does not flicker because of an unstable state of a pixel circuit when data is written.

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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