An organic light emitting diode display panel, its manufacturing method, and display device
A technology for light-emitting diodes and display panels, which is applied in the fields of organic semiconductor devices, semiconductor/solid-state device manufacturing, semiconductor devices, etc., can solve the problems of poor brightness uniformity of OLED display panels, and achieve the advantages of avoiding poor brightness uniformity and reducing resistance. Effect
Active Publication Date: 2021-03-09
BOE TECH GRP CO LTD
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[0004] The present invention provides an organic light-emitting diode display panel, a manufacturing method thereof, and a display device, which are used to avoid the problem of poor brightness uniformity of the OLED display panel due to a large cathode resistance
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[0040] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar structures in the drawings, and thus their repeated descriptions will be omitted. The words expressing position and direction described in the present invention are all described by taking the accompanying drawings as an example, but changes can also be made according to needs, and all changes are included in the protection scope of the present invention. The accompanying drawings of th...
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Abstract
The invention discloses an organic light-emitting diode display panel, a manufacturing method thereof, and a display device, which are used to avoid the problem of poor brightness uniformity of the OLED display panel due to large cathode resistance. The OLED display panel includes: a base substrate; an anode and an auxiliary electrode arranged on the base substrate, the anode and the auxiliary electrode are insulated from each other; and the anode and the auxiliary electrode are arranged on the anode and the auxiliary electrode A pixel definition layer, the pixel definition layer has a pixel opening area exposing the anode and a via hole exposing the auxiliary electrode, and the pixel opening area makes a gap between the edge of the pixel definition layer and the anode An obtuse angle, the via hole makes an acute angle between the edge of the pixel definition layer and the auxiliary electrode; the light-emitting layer and the cathode are sequentially arranged on the pixel definition layer; the cathode is arranged on the via hole The auxiliary electrode inside is electrically connected.
Description
technical field [0001] The invention relates to the field of display technology, in particular to an organic light emitting diode display panel, a manufacturing method thereof, and a display device. Background technique [0002] Among flat panel display panels, Organic Light Emitting Display (OLED) display panels have attracted widespread attention due to their advantages such as self-illumination, fast response, wide viewing angle, high brightness, bright colors, and thinness. [0003] Generally, for top-emission OLED light-emitting devices, in order to increase the light transmittance, the cathode needs to use a thinner transparent conductive material, but the thinner transparent cathode has a large square resistance, and when the current flows through the cathode, it will generate a relatively large amount of light. Large voltage drop, therefore, the cathode voltage obtained on the pixel farther away from the power supply point is smaller, resulting in a lower display bri...
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IPC IPC(8): H01L27/32H01L51/52H01L51/56
CPCH10K59/122H10K59/1201H10K2102/3026H10K71/00H10K59/80523H10K59/80522H10K59/80524H10K59/1315H10K59/00H10K50/81H10K50/824H10K50/828
Inventor 王辉锋
Owner BOE TECH GRP CO LTD