The present disclosure relates to a display substrate and a display device thereof. The display substrate comprises: a substrate; a first wiring extending in a first direction on the substrate; a first dielectric layer on the substrate and the first wiring; a second wiring extending in the first direction on the first dielectric layer, wherein an orthographic projection of the second wiring on the substrate at least partially overlaps with an orthographic projection of the first wiring on the substrate; a conformal dielectric layer on the first dielectric layer and the second wiring; a third wiring and a fourth wiring disposed at spacings in the first direction on the conformal dielectric layer, wherein orthographic projections of the third wiring and the fourth wiring on the substrate at least partially overlap with the orthographic projections of the first wiring and the second wiring on the substrate.

A display panel is provided. The display panel includes a plurality of signal lines and a testing circuit. The testing circuit includes a plurality of transistors electrically connected to the plurality of signal lines. The plurality of transistors are disposed in at least two groups, and a number of transistors of each group of the at least two groups is less than a total number of the plurality of signal lines. Therefore, the testing circuit of the display panel of the disclosure can reduce the circuit placement space in the horizontal direction.

A display device includes: a display area including a plurality of pixels; a first peripheral area disposed at one side of the display area; and a second peripheral area disposed at the opposite side of the display area, wherein a first column spacer is disposed in the display area, a second column spacer is disposed in the first peripheral area, and a third column spacer is disposed in the second peripheral area. The patterns of an exposure mask utilized in the first peripheral area in which the second column spacer is disposed and the second peripheral area in which the third column spacer is disposed may be different from each other.

An array substrate includes: a first substrate; a plurality of gate lines and a plurality of data lines; a plurality of thin film transistors; and a plurality of reflective electrodes. The plurality of gate lines and the plurality of data lines define a plurality of sub-pixel regions. A thin film transistor is located in a sub-pixel region. A reflective electrode is located in the sub-pixel region and electrically connected to the thin film transistor in the same sub-pixel region. Each reflective electrode has a border including a plurality of first sub-borders extending in a first direction, a plurality of second sub-borders extending in a second direction, and a plurality of chamfer borders each connecting a first sub-border and a second sub-border that are adjacent; and an intersection of extension lines of the first sub-border and the second sub-border is located outside the border of the reflective electrode.

The present disclosure provides an array substrate and a display device. The array substrate includes one start data line, N−1 intermediate data line and one end data line. The array substrate further includes a first driving circuit and a second driving circuit, the first driving circuit is arranged at a first side of the plurality of data lines, and the second driving circuit is arranged at a second side of the plurality of data lines opposite to the first side in a first direction. The first driving circuit is electrically connected to the first end of each of the plurality of data lines. The first driving circuit is electrically coupled to first ends of the plurality of data lines, a first end of the end data line is electrically coupled to a first end of the start data line, and the second driving circuit is electrically coupled to second ends of the plurality of data lines.

A method of fabricating a conductive pattern includes forming a conductive metal material layer and a conductive capping material layer on a substrate, forming a photoresist pattern as an etching mask on the conductive capping material layer, forming a first conductive capping pattern by etching the conductive capping material layer with a first etchant, forming a conductive metal layer and a second conductive capping pattern by etching the conductive metal material layer and the first conductive capping pattern with a second etchant, and forming a conductive capping layer by etching the second conductive capping pattern with a third etchant. The second conductive capping pattern includes a first region overlapping the conductive metal layer and a second region not overlapping the conductive metal layer, and the forming of the conductive capping layer includes etching the second region of the second conductive capping pattern to form the conductive capping layer.

A display apparatus includes a substrate including a display area and a non-display area disposed around the display area, a driving circuit disposed in the non-display area, a first conductive line extending in a first direction and disposed in the non-display area, a second conductive line extending in the first direction and disposed on the first conductive line, and a third conductive line extending in the first direction and disposed on the second conductive line, wherein the second conductive line overlaps the first conductive line by a first width or is spaced apart from the first conductive line by a first distance in a plan view, and the third conductive line overlaps the first conductive line by a second width or is spaced apart from the first conductive line by a second distance in the plan view.

Provided is a method for preparing a display substrate. The method includes: providing a substrate, the substrate including a plurality of pixel island regions spaced apart and a plurality of bridge regions connecting adjacent pixel island regions; forming thin film transistors and first signal lines in the pixel island regions, and forming first connecting bridges in the bridge regions; and forming second signal lines, second connecting bridges, and a source/drain layer on the substrate by a one-time patterning process.

An array substrate, a display panel, and a display device are provided. The array substrate has a display region and a non-display region, and the array substrate includes a substrate, a metal layer, an intermediate layer, a conductive film, and a conductive adhesive disposed in the non-display region. The metal layer is disposed on one side of the substrate, and the intermediate layer is disposed on one side of the metal layer away from the substrate. The array substrate defines a groove penetrating through the intermediate layer. The conductive film is disposed on one side of the intermediate layer away from the substrate and extends into the groove, and the conductive adhesive is disposed on one side of part of the conductive film in the groove away from the substrate, and at least extends to an edge of the groove adjacent to the display region.

A display device includes a substrate including a display area in which a plurality of sub-pixels are disposed, a plurality of anode electrodes respectively connected to the plurality of sub-pixels, and a cathode electrode connected to the plurality of sub-pixels and spaced apart from each of the plurality of anode electrodes. Each of the plurality of anode electrodes is disposed closer to the substrate than the cathode electrode by a height difference compensation part.