Voltage compensation circuit of display panel and display device

Abstract

According to the embodiment, the invention provides a voltage compensation circuit of a display panel and a display device. The display panel comprises a power cord for conveying driving voltage, wherein the power cord comprises a near end which is close to a power supply for offering the driving voltage and a far end which is kept away from the power supply for offering the driving voltage; the voltage compensation circuit comprises a booster unit and a voltage compensation unit; the input end of the booster unit is electrically connected to an input voltage and is used for conducting boosting processing on the input voltage; the output end of the boosting unit is electrically connected to the voltage compensation unit so as to supply power to the voltage compensation unit; the output endof the voltage compensation unit is electrically connected to the far end of the power cord so as to conduct voltage compensation on the far end of the voltage cord, so that a voltage difference between the far end and the near end of the power cord is less than a preset value, and subsequently, a problem of voltage attenuation of the far end of the power cord can be prevented.

Description

technical field [0001] The invention relates to the technical field of driving, in particular to a voltage compensation circuit and a display of a display panel. Background technique [0002] Along with the continuous development of science and technology, electronic display technology is also making continuous progress, from traditional cathode ray tubes to liquid crystal displays, and from liquid crystal displays to organic electroluminescent devices (OLEDs). Because of its thinness, lightness, high contrast ratio, fast response speed, full color and other advantages, organic electroluminescent devices (OLEDs) have good application prospects in many fields. [0003] The current OLED display panels are divided into two categories, PM-OLED (passive matrix driving OLED, passive driving OLED), AM-OLED (active matrix driving OLED, active driving OLED), among them, AM-OLED is in the big information It has advantages in volume display and is often used in mobile phones, TVs, com...

AI Technical Summary

Problems solved by technology

[0004] When AM-OLED is used as the display panel, as the screen size increases, the distance between the driving circuit of the pixel and the driving IC increases continuously, which causes the equivalent resistance of the power line of the driving circuit to increase accordingly, making the distance of the power line There is a voltage attenuation at the terminal, which may cause the voltage value of the driving voltage ELVDD1 between the near-end (the end close to the driver IC) and the far-end (the end far away from the driver IC) on the display panel to be different, which will cause the near-end of the AM-OLED display panel. There is a big difference between the display effect of the terminal and the remote terminal

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