Abstract: A display panel, a preparation method thereof, and a display device, and relates to the field of display technology are provided. The display panel includes: a substrate; a plurality of illuminating pixels arranged in an array above the substrate and located in the display region; and a first water oxygen barrier bar disposed above the substrate and located in the peripheral region, wherein the first water oxygen barrier bar includes a plurality of first sub-barrier bars arranged intermittently and a plurality of second sub-barrier bars arranged intermittently; in a direction perpendicular to an arrangement direction of the first sub-barrier bars, a gap between adjacent first sub-barrier bars and a gap between adjacent second sub-barrier bars are not aligned with each other.

Abstract: A driving method for a display substrate, a driving circuit and a display device are provided. In the driving method of the display substrate, the display substrate includes an active display region and a notch region embedded in the active display region, a pixel array is arranged at the active display region and the notch region, and a gate line and a data line at the active display region extend to the notch region. The notch region includes a first region and a second region other than the first region, a first side of the first region is not adjacent to the active display region. The driving method includes, when an image is displayed by the display substrate, inputting grayscale data having a grayscale value smaller than 2n?1 and greater than 0 to pixels at at least a part of the first region. The grayscale data is n-bit data.

Abstract: A method for bonding a three-dimensional cover, which includes the following steps: bonding a flexible display panel on a heavy release film through optical adhesive to obtain a bonded body; placing the bonded body on a carrying surface of a conformable tool, making the flexible display panel face the carrying surface of the conformable tool, and fixing two ends of the heavy release film in the bonded body to fixtures of the conformable tool; controlling the fixtures of the conformable tool to adjust the shape of the bonded body, so that the adjusted shape of the bonded body matches the three-dimensional cover; tearing off the heavy release film from the bonded body to obtain the flexible display panel with optical adhesive, and bonding the three-dimensional cover to the flexible display panel using the optical adhesive.

Abstract: The present disclosure provides a display device, a display panel and a pixel driving circuit. The pixel driving circuit includes a driving transistor, a first scanning terminal, a second scanning terminal, a data input terminal, a light emission control terminal, a storage capacitor, a reset unit, and a write compensation unit and a light emission control unit, wherein the reset unit is turned on according to a first scanning signal from the first scanning terminal to reset the storage capacitor and charge the storage capacitor; and the writing compensation unit is turned on according to a second scanning signal from the second scanning terminal, to cause data signals provided by the data input terminal to be written into a gate electrode of the driving transistor, and to cause the storage capacitor to be discharged through the writing compensation unit and the driving transistor until the driving transistor is turned off.