Display substrate and preparation method thereof, display panel and display device

Abstract

The invention provides a display substrate and a preparation method thereof, a display panel and a display device. A first wiring area, a second wiring area and an under-screen camera area are arranged in a display area of the display substrate. The under-screen camera area is located between the first wiring area and the second wiring area, a transparent cathode layer is arranged in the under-screen camera area, the transparent cathode layer is formed on a substrate of the display substrate, and the transparent cathode layer is electrically connected with a first power supply wiring of the first wiring area and a first power supply wiring of the second wiring area. According to the invention, a power supply signal of the display substrate can directly pass through the under-screen cameraarea; power supply wiring does not need to be wound in the edge of the under-screen camera area; the wiring width of the first power supply wiring of the first wiring area and the wiring width of thefirst power supply wiring of the second wiring area and the wiring distance between the first power supply wiring of the first wiring area and other wiring can be ensured, the power supply wiring voltage drop is reduced, the open circuit problem, the short circuit problem and the inter-wire crosstalk problem are solved, and the power supply voltage difference between the first wiring area and thesecond wiring area is small.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display substrate, a display panel, a display device and a method for preparing a display substrate. Background technique [0002] With the popularization of full screens, the under-screen camera set in the display area has gradually become the mainstream. The display area corresponding to the under-screen camera is dug out to form the under-screen camera area, which has become a mainstream design. The under-screen camera area retains the luminous material layer and transparent Cathode layer, the product form of its full screen is as follows figure 1 as shown, figure 1 Among them, 1' is the camera area under the screen, 2' is the display area, 3' is the connection area, and 4' is the full screen. [0003] Such as figure 2 As shown, in the prior art, the gate drive control wiring 11', the data wiring 12' and the power wiring 13' are usually arranged by winding at th...

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Problems solved by technology

[0005] In view of the above problems, the purpose of the embodiments of the present invention is to provide a display substrate, a display panel, a display device, and a method for preparing a display substrate, so as to solve the problem of edge metal winding in the under-screen camera area in the prior art. The problem of the line width and line spacing of the existing power supply lines is small

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