Abstract: Disclosed are a method of performing video call and a display device. The display device includes: a camera; a display, configured to present a window for a counterpart and/or a local window; and a processor, configured to: receive a push message sent from a server, wherein the push message is sent after the server receives a video call request sent from the mobile terminal; automatically establish a call process, and control the display to present the window for the counterpart and not to present the local window in response to the push message when the mobile terminal is authorized by the display device; and reject the video call request in response to the push message when the mobile terminal is not authorized by the display device.

Abstract: A method of manufacturing a display substrate which includes a central display area and an arc-shaped stretch area located at a corner of the central display area, wherein the method includes: preparing a substrate to be etched, which includes a flexible substrate, a stack structure disposed on the flexible substrate, and a last-dry-etched metal layer disposed on a side of the stack structure away from the flexible substrate, the stack structure including an active layer, at least one conductive layer, and a plurality of insulating layers, wherein the last-dry-etched metal layer is a last metal layer that is formed through dry etching; and forming a stretch groove by patterning the substrate to be etched, wherein the stretch groove is disposed in the stretch area and passes through the stack structure and a part of the flexible substrate. A display substrate, a display panel and a display device are further provided.

Abstract: A method of manufacturing a display substrate which includes a central display area and an arc-shaped stretch area located at a corner of the central display area, wherein the method includes: preparing a substrate to be etched, which includes a flexible substrate, a stack structure disposed on the flexible substrate, and a last-dry-etched metal layer disposed on a side of the stack structure away from the flexible substrate, the stack structure including an active layer, at least one conductive layer, and a plurality of insulating layers, wherein the last-dry-etched metal layer is a last metal layer that is formed through dry etching; and forming a stretch groove by patterning the substrate to be etched, wherein the stretch groove is disposed in the stretch area and passes through the stack structure and a part of the flexible substrate. A display substrate, a display panel and a display device are further provided.

Abstract: Disclosed are a method of performing video call and a display device. The display device includes: a camera; a display, configured to present a window for a counterpart and/or a local window; and a processor, configured to: receive a push message sent from a server, wherein the push message is sent after the server receives a video call request sent from the mobile terminal; automatically establish a call process, and control the display to present the window for the counterpart and not to present the local window in response to the push message when the mobile terminal is authorized by the display device; and reject the video call request in response to the push message when the mobile terminal is not authorized by the display device.