Invention Grant
- Patent Title: Display device having organic light emitting diode with low threshold layer
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Application No.: US17481351Application Date: 2021-09-22
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Publication No.: US11895858B2Publication Date: 2024-02-06
- Inventor: Hayata Aoki
- 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: JP 20170394 2020.10.08
- Main IPC: H01L51/50
- IPC: H01L51/50 ; H01L27/32 ; H10K50/17 ; H10K50/15 ; H10K59/122

Abstract:
A display device includes: light-emitting regions different in luminescent colors and including luminescent layers separated for each of the luminescent colors; a low-threshold layer lower in threshold voltage than any one of the luminescent layers included in a pair of different-color light-emitting regions included in the light-emitting regions, different in the luminescent colors, and adjacent to each other; a continuous layer under the luminescent layers and the low-threshold layer, including first areas and a second area continuously, the first areas being in contact with the respective light-emitting regions, the second area being in contact with the low-threshold layer; pixel electrodes under the continuous layer, overlapping with the respective light-emitting regions; and a counter electrode over the luminescent layers and the low-threshold layer, being opposed to the pixel electrodes. The low-threshold layer is between the pair of different-color light-emitting regions.
Public/Granted literature
- US20220115620A1 DISPLAY DEVICE Public/Granted day:2022-04-14
Information query
IPC分类: