Display driving circuit and display device

Abstract

The invention provides a display driving circuit and a display device. The display driving circuit comprises a plurality of groups of data signal lines, and each group of data signal lines comprises Ndata signal lines; a plurality of gate scan lines; multiple pixel driving units, wherein each pixel driving unit comprises N first MOS tubes and N second MOS tubes, the N first MOS tubes correspond to the N second MOS tubes in a one-to-one mode, the input ends of the N first MOS tubes are connected with driving voltage, and the output ends of the N first MOS tubes are connected and used for outputting driving current to the corresponding LED light-emitting units. Gates of the N first MOS tubes are connected with output ends of the N second MOS tubes in a one-to-one correspondence manner, input ends of the N first MOS tubes are connected with the N data signal lines in the same group in a one-to-one correspondence manner, and gates of the N first MOS tubes are connected with a gate scanning line. The gray scale number of the display device can be increased, the gray scale control sensitivity can be improved, and the display quality can be improved.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a display driving circuit and a display device. Background technique [0002] The current display industry is developing rapidly, and display applications have also been integrated into all aspects of people's lives. New display modes continue to emerge. The traditional LCD industry has become increasingly saturated, and the development speed has gradually slowed down. The new display methods represented by OLED, MicroLED and MiniLED are sought after by the industry and are developing rapidly. [0003] The LED display method is different from the traditional LCD display. It is a current-driven device, that is, its luminous brightness is controlled by current; while the LCD is a voltage-controlled display, and the display is realized by controlling the rotation of liquid crystal molecules by voltage. Different from voltage drive, it is more difficult to control the acc...

AI Technical Summary

Problems solved by technology

[0004] However, the time-ratio data driving method has its inherent disadvantages, because it uses the light-emitting method controlled by each subframe, the higher the resolution of the driving panel, the higher the number of color bits, and the shorter the line scanning time

The driving capability of current LTPS TFT is limited, and the resolution and number of bits that can be driven by the time ratio digital driving method are relatively low, which is not conducive to fine display

Images