Light-emitting display device
A light-emitting display and light-emitting layer technology, applied in photovoltaic power generation, electric solid-state devices, semiconductor devices, etc., can solve problems such as reliability defects of organic light-emitting display devices
Pending Publication Date: 2022-05-20
LG DISPLAY CO LTD
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[0008] However, in the case of the cathode contact structure, since the eaves are formed to form the undercut structure, seams may be generated in the inorganic film of the encapsulation layer due to the presence of the cathode contact structure.
When such an inorganic gap occurs, moisture may permeate into the light-emitting region through the organic film of the encapsulation layer, thereby causing a problem of causing a reliability defect of the organic light-emitting display device.
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[0024] The advantages and features of the present disclosure and methods for achieving them will be clarified through the embodiments described below with reference to the accompanying drawings. However, this disclosure may be embodied in different 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 scope of the disclosure to those skilled in the art. Furthermore, the present disclosure is limited only by the scope of the claims.
[0025] The shapes, dimensions, ratios, angles, and quantities disclosed in the drawings for describing embodiments of the present disclosure are examples only, and thus, the present disclosure is not limited to the shown details. Throughout the specification, the same reference numerals refer to the same elements. In the following description, when a detailed description of a related known function o...
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A light emitting display device includes: a substrate; the circuit layer is provided with a thin film transistor and an auxiliary power supply electrode which are arranged on the substrate; an insulating layer disposed on the circuit layer and including a first opening exposing a portion of the auxiliary power supply electrode; a pixel electrode disposed on the insulating layer and connected to the thin film transistor; an auxiliary electrode contact region formed in the insulating layer, an auxiliary electrode formed on the auxiliary electrode; a light emitting layer disposed on the pixel electrode and the auxiliary electrode; the common electrode is arranged on the light-emitting layer and is electrically connected with the auxiliary power supply electrode through the auxiliary electrode contact area; a filler disposed in the auxiliary electrode contact region; the packaging layer is arranged on the common electrode and the filler, the first opening of the insulating layer comprises an undercut area between the auxiliary power supply electrode and the auxiliary electrode, and the undercut area is filled with the filler.
Description
technical field [0001] The present disclosure relates to a light emitting display device. Background technique [0002] With the advancement of the information age, demands for display devices for displaying images have increased in various forms. [0003] Among such display devices, light emitting display devices are classified into inorganic light emitting display devices and organic light emitting display devices according to the material of the light emitting layer. For example, an organic light emitting display device is a self-luminous display device that injects holes from an anode and electrons from a cathode into a light emitting layer and emits light when excitons generated by the combination of the injected holes and electrons drop from an excited state to a ground state. [0004] A disadvantage of the organic light emitting display device is that it is easily degraded by external factors such as external moisture and oxygen. In order to avoid this, the organic ...
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IPC IPC(8): H01L27/32H01L51/52
CPCH10K59/124H10K59/12H10K59/1315H10K50/824H10K50/844H10K59/38H10K59/122H10K59/131H10K50/8426
Inventor 沈成斌成美璘H·崔
Owner LG DISPLAY CO LTD