Light-emitting control circuit, light-emitting 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 inputting terminal (Input), an input sampling unit (11), an outputting unit (12), a resetting unit (13), an output pulling-down unit (14) and an outputting terminal for a light-emitting control signal (EM[n]). The input sampling unit (11) samples an input signal under a control of a first clock signal (CK1); the outputting unit (12) generates a light-emitting control signal under a control of a second clock signal (CK2) after the input sampling unit (11) samples the input signal; the resetting unit (13) resets the light-emitting control signal through the output pulling-down unit (14) under a control of a third clock signal (13). An OLED device is in an OFF state during a process for writing display data into pixel cells and the OLED device is turned on to emit light after the display data is written into the pixel cells, thus a display image is guaranteed not to generate flickers due to an unstable state of a pixel circuit as the data is written.

Description

technical field [0001] The present 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 high brightness, wide viewing angle, and fast response speed. The traditional passive matrix organic light-emitting display diode (PMOLED) needs a shorter driving time of a single pixel as the display size increases, so it needs to increase the transient current and increase the power consumption; at the same time, the application of high current will cause ITO The voltage drop on the line is too large and makes the OLED operating voltage too high, thereby reducing its efficiency. Active-matrix organic light-emitting display diodes (AMOLEDs) scan input OLED current line by line through switching tubes, which can solve these prob...

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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