Display substrate and display panel

Abstract

Embodiments of the present disclosure provide a display substrate comprising: a plurality of pixels comprising light emitting devices, at least a portion of the pixels comprising a light emitting device of a first color, the light emitting device comprising a cathode and an anode; a anode connector, used for supplying power to the anode of each light-emitting device through an anode wire; total resistance of the anode wire connected between any light-emitting device and the anode connector being the power supply resistance of the light-emitting device; wherein the coupling capacitance values of the anodes of at least part of the light-emitting devices of the first color are different. For any two light-emitting devices with different anode coupling capacitance values in the first color, the power supply resistance of the light-emitting device with the larger anode coupling capacitance value is smaller than that of the light-emitting device with the smaller anode coupling capacitance value.

Description

technical field [0001] Embodiments of the present disclosure relate to the field of display technology, and in particular, to a display substrate and a display panel. Background technique [0002] In an organic light-emitting diode (OLED) display panel, each pixel (or sub-pixel, sub-pixel) includes an OLED, and the anode port of the driver chip (IC) is electrically connected to the anode connector, so that the OLED of each pixel is connected through the anode line. The anode is powered, that is, the anode voltage Vdd is provided to the anode of the OLED. [0003] Obviously, the anode line has a certain resistivity, so there is a certain voltage drop (IR Drop) when the signal propagates in it, and the longer the propagation distance, the greater the voltage drop. Therefore, the anode voltage Vdd actually obtained by the OLED in the pixel farther away from the IC is lower, that is, the transvoltage Vds of the OLED is lower. Wherein, the cross voltage refers to the difference...

AI Technical Summary

Problems solved by technology

[0005] In particular, the brightness of OLEDs of different colors varies with the anode voltage Vdd (or cross-voltage Vds) in different ways, which leads to the realization of white balance at a certain position of the display panel (that is, the pixels of different colors emit in the same gray scale). When the light can be just mixed into white light), the components of each color at other positions of the display panel do not match, and the white balance cannot be achieved

For example, when white balance is achieved at a certain position of the display panel, the part closer to the IC than the position will be reddish (pink), and the part further away from the IC will be cyan (greenish), resulting in " "redness / blueness" phenomenon

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