Organic light-emitting display device

Abstract

The invention provides an organic light-emitting display device which comprises an array substrate provided with a pixel electrode, a metal connection electrode and an auxiliary electrode; the metal connection electrode is connected with the auxiliary electrode through a concave hole positioned above the auxiliary electrode; the concave hole forms a first cavity and a second cavity which are interconnected, and the first cavity extends in the direction away from the pixel electrode from an edge line, away from one side of the pixel electrode, of the second cavity; a pixel definition layer is above the array substrate, and grooves corresponding to the concave hole and the pixel electrode are respectively reserved; an OLED semiconductor layer is above the pixel definition layer, covers the pixel electrode and the metal connection electrode and also extends into the first cavity to be connected with the auxiliary electrode; a cathode is above the OLED semiconductor layer, extends into thefirst cavity to be connected with the auxiliary electrode and is in a discontinuous connection state by taking the concave hole as a breaking point. Through the implementation of the organic light-emitting display device provided by the invention, the manufactory process can be simplified through omitting inverted trapezoidal column legs, the electrical conductivity of the cathode on the OLED semiconductor layer can be improved, and the purpose of reducing pressure drop is achieved.

Description

Technical field [0001] The present invention relates to the field of display technology, and in particular to an organic light emitting display device. Background technique [0002] Compared with the traditional LCD, the organic light-emitting display device is a self-luminous display device, because it does not require a backlight, it has the advantages of thinness, power saving, fast response, etc., and also has excellent viewing angle and contrast. Generally, an organic light emitting display device is composed of an array substrate and an OLED light emitting device disposed above the array substrate. The OLED light emitting device includes an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and a cathode; Among them, the anode, the hole injection layer, the hole transport layer, the light emitting layer, the electron transport layer, and the electron injection layer are formed as an OLED s...

AI Technical Summary

Problems solved by technology

However, the inventors found that the pixel definition layer 2 of the organic light-emitting display device in the above method / and the inverted trapezoidal column foot a respectively need to be exposed and developed twice to form an upside-down trapezoidal structure, which is not only complicated in process, but also time-consuming and labor-intensive.

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