An organic electroluminescent device

Abstract

The invention provides an organic electroluminescent device, comprising a substrate, the substrate is divided into a light-emitting area and a non-light-emitting area, the non-light-emitting area is provided with a metal auxiliary electrode, and the light-emitting area is stacked with a first electrode layer, an organic layer and a second electrode layer, the first electrode layer is patterned into several conductive units, and several conductive connectors are arranged between the conductive units and the metal auxiliary electrodes, at least one of the conductive connectors is A number of open circuit inducing areas are provided, and when the device is short-circuited, the open circuit inducing areas can be open circuited so as to realize the short circuit protection function of the device.

Description

technical field [0001] The invention relates to an organic electroluminescent device, in particular to an organic electroluminescent device capable of preventing short-circuit phenomenon. Background technique [0002] The organic light-emitting phenomenon refers to a phenomenon in which electrical energy is converted into light energy by using an organic substance. That is, when an appropriate organic layer is arranged between the anode and the cathode, when a voltage is applied between the two electrodes, holes are injected from the anode into the organic layer, and electrons are injected from the cathode into the organic layer. Excitons are formed when the injected holes and electrons meet, and light is generated when the excitons fall back to the ground state. [0003] Dust particles, burrs, pinholes, cracks and other defects inevitably exist in the manufacturing process of OLED screens, and the distance between the anode and cathode of OLED screens is usually very small...

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Problems solved by technology

[0005] The conductive connector mainly achieves a certain impedance through the material or geometric structure used. When there is a defect, this anti-short-circuit impedance can avoid the occurrence of a short-circuit (because the resistance is connected in series on the short-circuited device). This type of anti-short circuit system There are two important factors that must be considered, (1) The pixels of the screen body must be enough (Ncell); (2) The anti-short circuit resistance must be as large as possible (Rcell-spl); if the above two necessary conditions cannot be met, The anti-short-circuit effect will not be obvious, and the short-circuit point will generate high heat due to high current (P=IR; P=power, I=current, R=resistance), thereby reducing the reliability of the screen

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