Display device and method for producing display device

JPWO2022224070A5Active Publication Date: 2025-04-14SEMICON ENERGY LAB CO LTD
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Patent Information

Application Number
JP2023515410
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2021-04-22
Filing Date
2022-04-08
Publication Date
2025-04-14
Estimated Expiration
2042-04-08

AI Technical Summary

Technical Problem

Current display devices face challenges in achieving high-definition displays with low power consumption, high aperture ratio, and integrated imaging functions, such as fingerprint biometric authentication, while maintaining reliability and avoiding issues like current leakage that degrade display quality and power efficiency.

Method used

A display device configuration incorporating a light-emitting element and a light-receiving element with overlapping organic layers and a resin layer, separated by etching, to reduce current leakage and enhance imaging sensitivity, along with an insulating layer to protect exposed organic layers, allowing for high-definition imaging and biometric data acquisition without additional components.

Benefits of technology

The solution enables a display device with improved brightness, contrast, and power efficiency, supporting high-definition imaging and biometric authentication while reducing noise and power consumption, thus addressing the limitations of prior art.

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Abstract

The present invention provides a display device having an imaging function. The present invention provides the display device or an imaging device with a high aperture ratio. The display device has a first light-emitting element and a light-receiving element. In the first light-emitting element, a first pixel electrode, a first organic layer, and a common electrode are stacked in this order. In the light-receiving element, a second pixel electrode, a second organic layer, and a common electrode are stacked in this order. The first organic layer includes a first light-emitting layer, and the second organic layer includes a photoelectric conversion layer. In a region between the first light-emitting element and the light-receiving element, there are a first layer and a second layer. The first layer overlaps the second organic layer, and includes the same material as the first organic layer. The second layer overlaps the first organic layer, and includes the same material as the second organic layer. In the region between the first light-emitting element and the light-receiving element, the end of the first organic layer and the end of the first layer are provided facing each other, and the end of the second organic layer and the end of the second layer are provided facing each other.
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