Display panel including contact electrode contacting cathode layer and display device having the same
地域：
Shenzhen
摘要
A display panel and a display device are disclosed. The display panel includes an array substrate, an electrode layer disposed on the array substrate, a light-emitting layer disposed on the electrode layer, and a cathode layer disposed on the light-emitting layer. The electrode layer includes an anode and a contact electrode disposed apart from each other on the array substrate. The contact electrode has a pattern, the contact electrode contacts the cathode layer through the light-emitting layer.
說明書
The present disclosure is a Notional Phase of PCT Patent Application No. PCT/CN2021/098434 having international filing date of Jun. 4, 2021, which claims priority to China Application No. 202110460222.1, entitled “DISPLAY PANEL AND DISPLAY DEVICE”, filed on Apr. 27, 2021, which is herein incorporated by reference in its entirety.
The present disclosure relates to the field of display technology, and more particularly, to a display panel and a display device.
In panel display industry, active-matrix organic light-emitting diode (AMOLED) displays have higher color saturation and lower energy consumption than liquid crystal displays (LCD), and are favored by major screen manufacturers. With the diversified customer needs for large screen and high quality, the display panels are developing towards large sizes and high resolution. With the increase of panel sizes, some defects of small and medium size are gradually exposed, in which the brightness uniformity of the panel gradually deteriorates as the size increases.
權(quán)利要求
What is claimed is:1. A display panel, comprising:an array substrate; an electrode layer, disposed on the array substrate and comprising:a metal electrode layer, disposed on the array substrate; and at least one transparent electrode layer; a light-emitting layer, disposed on the electrode layer; and a cathode layer, disposed on the light-emitting layer, wherein the electrode layer comprises an anode and a contact electrode disposed apart from each other on the array substrate; the contact electrode has a pattern, and the contact electrode contacts the cathode layer through the light-emitting layer; and the transparent electrode layer is disposed between the metal electrode layer and the array substrate or the light-emitting layer. 2. The display panel according to claim 1 , wherein the display panel further comprises a pixel definition layer disposed between the electrode layer and the light-emitting layer;the pixel definition layer has a pixel opening exposing the anode and a contact hole exposing the contact electrode; both the light-emitting layer and the cathode layer extend into the contact hole, and the contact electrode contacts the cathode layer through the light-emitting layer in the contact hole. 3. The display panel according to claim 1 , wherein the pattern of the contact electrode is a concentric multi-ring pattern. 4. The display panel according to claim 1 , wherein the array substrate is provided with an auxiliary electrode, and the auxiliary electrode is electrically connected with the contact electrode. 5. The display panel according to claim 4 , wherein the array substrate comprises:a substrate a driving circuit layer disposed on the substrate; a planarization layer disposed on one side of the driving circuit layer away from the substrate; wherein the anode and the contact electrode are disposed on one side of the planarization layer away from the driving circuit layer, and the auxiliary electrode is disposed in the driving circuit layer and electrically connected with the contact electrode through a via hole. 6. The display panel according to claim 5 , wherein the array substrate is further provided with an auxiliary electrode wiring, the auxiliary electrode wiring and the auxiliary electrode are disposed on a same layer, and the auxiliary electrode wiring is electrically connected with the auxiliary electrode. 7. The display panel according to claim 6 , wherein an extension direction of the auxiliary electrode wiring is equal to an extension direction of a data line of the driving circuit layer. 8. The display panel according to claim 6 , wherein the driving circuit layer comprises a thin film transistor, and the auxiliary electrode and a source and a drain of the thin film transistor are disposed on a same layer. 9. The display panel according to claim 4 , wherein the display panel further comprises a pixel definition layer disposed between the electrode layer and the light-emitting layer;the pixel definition layer has a pixel opening exposing the anode and a contact hole exposing the contact electrode; both the light-emitting layer and the cathode layer extend into the contact hole, and the contact electrode contacts the cathode layer through the light-emitting layer in the contact hole; and the array substrate is provided with an auxiliary electrode, and the auxiliary electrode is electrically connected with the contact electrode. 10. The display panel according to claim 4 , wherein the pattern of the contact electrode is a concentric multi-ring pattern; andthe array substrate is provided with an auxiliary electrode, and the auxiliary electrode is electrically connected with the contact electrode. 11. A display device comprising a display panel, wherein the display panel comprises:an array substrate; an electrode layer, disposed on the array substrate and comprising:a metal electrode layer, disposed on the array substrate; and at least one transparent electrode layer; a light-emitting layer, disposed on the electrode layer; and a cathode layer, disposed on the light-emitting layer, wherein the electrode layer comprises an anode and a contact electrode disposed apart from each other on the array substrate; the contact electrode has a pattern, and the contact electrode contacts the cathode layer through the light-emitting layer; and the transparent electrode layer is disposed between the metal electrode layer and the array substrate or the light-emitting layer. 12. The display device according to claim 11 , wherein the display panel further comprises a pixel definition layer disposed between the electrode layer and the light-emitting layer;the pixel definition layer has a pixel opening exposing the anode and a contact hole exposing the contact electrode; both the light-emitting layer and the cathode layer extend into the contact hole, and the contact electrode contacts the cathode layer through the light-emitting layer in the contact hole. 13. The display device according to claim 11 , wherein the array substrate is further provided with an auxiliary electrode wiring, the auxiliary electrode wiring and the auxiliary electrode are disposed on a same layer, and the auxiliary electrode wiring is electrically connected with the auxiliary electrode. 14. A display panel, comprising:an array substrate; an electrode layer, disposed on the array substrate; a light-emitting layer, disposed on the electrode layer; a cathode layer, disposed on the light-emitting layer; and a pixel definition layer, disposed between the electrode layer and the light-emitting layer, wherein the electrode layer comprises an anode and a contact electrode disposed apart from each other on the array substrate; the contact electrode has a pattern, and the contact electrode contacts the cathode layer through the light-emitting layer; the pixel definition layer has a pixel opening exposing the anode and a contact hole exposing the contact electrode; and both the light-emitting layer and the cathode layer extend into the contact hole, and the contact electrode contacts the cathode layer through the light-emitting layer in the contact hole. 15. The display panel according to claim 14 , wherein the pattern of the contact electrode is a concentric multi-ring pattern. 16. The display panel according to claim 14 , wherein the array substrate is provided with an auxiliary electrode, and the auxiliary electrode is electrically connected with the contact electrode. 17. The display panel according to claim 16 , wherein the array substrate comprises:a substrate a driving circuit layer disposed on the substrate; a planarization layer disposed on one side of the driving circuit layer away from the substrate; wherein the anode and the contact electrode are disposed on one side of the planarization layer away from the driving circuit layer, and the auxiliary electrode is disposed in the driving circuit layer and electrically connected with the contact electrode through a via hole. 18. The display panel according to claim 17 , wherein the array substrate is further provided with an auxiliary electrode wiring, the auxiliary electrode wiring and the auxiliary electrode are disposed on a same layer, and the auxiliary electrode wiring is electrically connected with the auxiliary electrode. 19. The display panel according to claim 18 , wherein an extension direction of the auxiliary electrode wiring is equal to an extension direction of a data line of the driving circuit layer. 20. The display panel according to claim 18 , wherein the driving circuit layer comprises a thin film transistor, and the auxiliary electrode and a source and a drain of the thin film transistor are disposed on a same layer.
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