Abstract: The present application provides an organic light emitting diode (OLED) display panel and a method of manufacturing the same, and a display terminal. The OLED display panel includes an array substrate, a protective layer and a cathode. The array substrate includes a first auxiliary electrode, a second auxiliary electrode, and a third auxiliary electrode. The third auxiliary electrode is connected to the first auxiliary electrode and the second auxiliary electrode. The protective layer is provided with an undercut opening exposing a portion of the third auxiliary electrode. The cathode extends into the undercut opening and is connected to the third auxiliary electrode.

Abstract: A 3D bio-printer capable of detecting cell activity is provided. The 3D bio-printer includes an upper PC and a lower 3D printer. A conveying hose is connected to a printhead base of the printer, and a temperature controller is connected to the conveying hose. A printhead controller is connected to the other end of the conveying hose, a printhead is connected to the bottom of the printhead controller, and a main control cabinet controls the printhead to work via a signal generator. A prototyping table is provided under the printhead and is connected with a cell activity detecting device for detecting activity of a printed product. Cell activity can be detected in the process of printing, which ensures that the printed biological tissues maintain biological activity. It can supply multi-biological raw materials and realize multi-biological material printing, which ensures an environment suitable for biological material printing.

Abstract: A 3D bio-printer capable of detecting cell activity is provided. The 3D bio-printer includes an upper PC and a lower 3D printer. A conveying hose is connected to a printhead base of the printer, and a temperature controller is connected to the conveying hose. A printhead controller is connected to the other end of the conveying hose, a printhead is connected to the bottom of the printhead controller, and a main control cabinet controls the printhead to work via a signal generator. A prototyping table is provided under the printhead and is connected with a cell activity detecting device for detecting activity of a printed product. Cell activity can be detected in the process of printing, which ensures that the printed biological tissues maintain biological activity. It can supply multi-biological raw materials and realize multi-biological material printing, which ensures an environment suitable for biological material printing.