Display device and light emitting device

Abstract

A display device wherein light emitting elements are arranged in a two-dimensional matrix form, and wherein each light emitting element is configured of a first electrode 51 formed on a substrate, a multilayer structure 70 formed on the first electrode 51, and a second electrode 52 formed on the multilayer structure 70. The multilayer structure 70 is formed by sequentially laminating, in the following order from the first electrode side, at least a first organic layer 71 comprising a first light emitting layer, a charge generation layer 74 wherein a first layer 74A into which a first carrier is injected and a second layer 74B into which a second carrier is injected are laminated, and a second organic layer 72 comprising a second light emitting layer. With respect to a light emitting element that comprises a defect region 81, the charge generation layer 74 is in a high electrical resistance state or insulated state 74A' in the defect region 81, while being in a low electrical resistancestate 74A" in a region 82 other than the defect region.

Description

technical field [0001] The present disclosure relates to a display device and a light emitting device. Background technique [0002] In recent years, organic electroluminescent display devices (hereinafter also simply referred to as "organic EL display devices") using organic electroluminescent elements (hereinafter also simply referred to as "organic EL elements") have attracted attention as display devices instead of liquid crystal display devices. . The organic EL display device is a self-luminous type, has low power consumption characteristics, and is also considered to have sufficient responsiveness even to high-definition high-speed video signals. Development and commercialization of practical organic EL display devices are being vigorously advanced. In addition, the development and commercialization of a light emitting device (illumination device) using an organic EL element as a light emitting part is also vigorously progressing. An organic EL element generally ha...

AI Technical Summary

Problems solved by technology

[0003] Incidentally, for example, if particles (foreign matter) or protrusions exist on the first electrode, or if a fracture or cut portion is generated in the first electrode, the coverage of the organic layer is insufficient, and a problem may occur between the first electrode and the second electrode. short circuit

In addition, in an active matrix type organic EL display device, if such a short circuit occurs, pixels including the short circuit have defects, and the display quality of the organic EL display device deteriorates

In addition, in the passive matrix type organic EL display device, the line is broken, and the display quality of the organic EL display device is also deteriorated.

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