Invention Grant
- Patent Title: Display device
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Application No.: US16283907Application Date: 2019-02-25
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Publication No.: US10777614B2Publication Date: 2020-09-15
- Inventor: Koji Yasukawa
- Applicant: Japan Display Inc.
- Applicant Address: JP Tokyo
- Assignee: Japan Display Inc.
- Current Assignee: Japan Display Inc.
- Current Assignee Address: JP Tokyo
- Agency: Michael Best & Friedrich LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@1bf3c62f
- Main IPC: H01L27/32
- IPC: H01L27/32 ; H01L51/50 ; H01L51/52

Abstract:
Provided is a display device having first to third light-emitting elements. The first to third light-emitting elements each include: a first electrode; a hole-transporting layer over the first electrode; an emission layer over the hole-transporting layer; a hole-blocking layer over and in contact with the emission layer; an electron-transporting layer over and in contact with the hole-blocking layer; and a second electrode over the electron-transporting layer. An emission wavelength of the second light-emitting element is longer than that of the first light-emitting element and shorter than that of the third light-emitting element. A total thickness of the hole-blocking layer and the electron-transporting layer in the second light-emitting element is larger than that in the first light-emitting element and smaller than that in the third light-emitting element. A thickness of the hole-blocking layer is larger than that of the electron-transporting layer in each of the first to third light-emitting elements.
Public/Granted literature
- US20190280056A1 DISPLAY DEVICE Public/Granted day:2019-09-12
Information query
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