Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel includes a display area, a control board arranged on one side of the display area, and a first common electrode terminal and a second common electrode terminal respectively connected to the control board; The display area includes a plurality of common electrode lines extending in the horizontal direction, wherein the two ends of the plurality of common electrode lines close to the control board are connected to the first common electrode terminal, and the ends of the plurality of common electrode lines far away from the control board The two ends are connected to the second common electrode terminal; the control board provides the first common voltage and the second common voltage to the first common electrode terminal and the second common electrode terminal respectively, and by adjusting the size of the first common voltage and the second common voltage, To reduce the difference between the voltage values ​​of multiple common electrode lines close to the control board and the voltage values ​​of multiple common electrode lines far away from the control board, thereby improving the voltage uniformity of the common electrode lines in the display area, thereby improving the display quality .

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display panel and a display device. Background technique [0002] Thin Film Transistor (TFT) is the main driving element in current Liquid Crystal Display (LCD) and Active Matrix Organic Light-Emitting Diode (AMOLED). It is related to the display performance of the flat panel display device. [0003] Most of the liquid crystal displays currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to pour liquid crystal molecules between the thin film transistor array substrate (ThinFilm Transistor Array Substrate, TFT Array Substrate) and the color filter (ColorFilter, CF) substrate, and apply pixel voltage on the two substrates respectively. and the common voltage, through the electric field formed between the pixel voltage and the commo...

AI Technical Summary

Problems solved by technology

[0005] In the conventional GOA circuit design, since the gate scanning line and the common electrode (COM) line are in the same metal layer, it is easy to form a "T" shape, and the metal in the same layer is easy to be damaged by ESD (Electro-Static Discharge, electrostatic discharge). Therefore, in order to avoid the risk of ESD explosion, the gate scanning line and the common electrode line are arranged on different metal layers, and then converted into the same layer of metal wiring through the via hole to connect to the display area (AA area), but due to the load of the common electrode line (RC loading) causes the common electrode line waveform delay (delay) away from the array substrate wiring (Wire On Array, WOA) side, that is, the voltage is reduced, that is, the TFT of the sub-pixel in the display area feels The common voltage received is high, and the common voltage felt on the side away from the WOA is high, and the common voltage is uneven in the display area, causing uneven panel display

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