Invention Grant
- Patent Title: Light-emitting device including optical cavity with low angular colour shift
-
Application No.: US15937960Application Date: 2018-03-28
-
Publication No.: US10367162B1Publication Date: 2019-07-30
- Inventor: Edward Andrew Boardman , James Andrew Robert Palles-Dimmock , Enrico Angioni , Tim Michael Smeeton
- Applicant: Sharp Kabushiki Kaisha
- Applicant Address: JP Osaka
- Assignee: Sharp Kabushiki Kaisha
- Current Assignee: Sharp Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Renner, Otto, Boisselle & Sklar, LLP
- Main IPC: H01L29/06
- IPC: H01L29/06 ; H01L31/00 ; H01L51/50 ; H01L51/52 ; H01L27/32

Abstract:
A light-emitting device includes an emissive layer that emits light by recombination of first charges and second charges; a first electrode from which the first charges are supplied; a second electrode from which the second charges are supplied; a first charge transport layer that injects the first charges from the first electrode into the emissive layer; and a second charge transport layer that injects the second charges from the second electrode into the emissive layer. At least one of the charge transport layers is an absorbing charge transport layer that includes a light absorbing material that absorbs light within a portion of the emission spectrum of the light emitted by the emissive layer. The absorbing charge transport layer may be an ETL or an HTL, and may be located only between the first electrode and the emissive layer, only between the opposing second electrode and the emissive layer, or between both electrodes and the emissive layer.
Information query
IPC分类: