Invention Grant
- Patent Title: Display apparatus
- Patent Title (中): 显示装置
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Application No.: US13050656Application Date: 2011-03-17
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Publication No.: US08344370B2Publication Date: 2013-01-01
- Inventor: Takayuki Sumida , Shoji Sudo , Naoyuki Ito , Takayuki Ito
- Applicant: Takayuki Sumida , Shoji Sudo , Naoyuki Ito , Takayuki Ito
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc., IP Division
- Priority: JP2010-062207 20100318
- Main IPC: H01L51/54
- IPC: H01L51/54

Abstract:
In a display apparatus including pixels, each of which has organic EL elements which emit red, green, and blue (RGB) colors and a refractive index-control layer, an electrode at a light extraction side of each organic EL element is a silver layer in contact with a charge transport layer, the refractive index-control layer is arranged on the silver layer in common with the organic EL elements which emit RGB colors, and an effective refractive index (neff) represented by the following formula is in a range of 1.4 to 2.3. neff=0.7×nu+0.3×nd In the above formula, nu indicates the refractive index of the refractive index-control layer 3, and nd indicates the refractive index of the charge transport layer 1.
Public/Granted literature
- US20120056164A1 DISPLAY APPARATUS Public/Granted day:2012-03-08
Information query
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