Display panel, method for manufacturing the same, and display device

A method for manufacturing a display panel comprising a first pixel region and a second pixel region, a pixel density of the second pixel region being lower than a pixel density of the first pixel region, wherein the method comprises:

• manufacturing a plurality of pixel units arranged in array and a plurality of electrical connection structures in the second pixel region;
• wherein the plurality of pixel units form a plurality of rows of pixel units and each row of pixel units comprises a plurality of pixel units arranged in a first direction;
• each of the pixel units comprises a plurality of sub-pixels arranged in the first direction, and two sub-pixels that are closest to each other and belong respectively to two adjacent pixel units in a same row of pixel units form a sub-pixel group;
• the sub-pixel comprises:
• a sub-pixel driver circuit, and a first signal line pattern to a fifth signal line pattern coupled to the sub-pixel driver circuit;
• the plurality of electrical connection structures are corresponding to the sub-pixel groups respectively, wherein each of the electrical connection structures is between two sub-pixels comprised in a corresponding one of the sub-pixel groups, and the electrical connection structure comprises a first electrical connection layer, a second electrical connection layer and a third electrical connection layer disposed in different layers;
• the first electrical connection layer comprises a first electrical connection element and a second electrical connection element, and there is a first gap between the first electrical connection element and the second electrical connection element;
• the first electrical connection element is coupled to the first signal line pattern comprised in each sub-pixel in the corresponding sub-pixel group, and the second electrical connection element is coupled to the second signal line pattern comprised in each sub-pixel in the corresponding sub-pixel group;
• the second electrical connection layer comprises a third electrical connection element and at least one fourth electrical connection element, and there is a second gap between the third electrical connection element and the fourth electrical connection element that are adjacent;
• the third electrical connection element is coupled to the third signal line pattern comprised in each sub-pixel in the corresponding sub-pixel group, the at least one fourth electrical connection element respectively corresponds to the fourth signal line patterns comprised in both the sub-pixels in the corresponding sub-pixel group and each of the at least one fourth electrical connection element is coupled to a corresponding one of the fourth signal line patterns;
• the third electrical connection layer is coupled to the fifth signal line pattern comprised in each sub-pixel in the corresponding sub-pixel group, the fifth signal line pattern is used to transmit a fifth signal with a fixed electrical potential, and an orthographic projection of the third electrical connection layer onto a substrate of the display panel covers at least part of an orthographic projection of the first gap onto the substrate and at least part of an orthographic projection of the second gap onto the substrate.