Display substrate, organic light emitting device and display device with vapor-deposited organic film layers
US11502137B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 7, 2018 |
| Grant date | Nov 15, 2022 |
| Priority date | — |
| Expiry date | Oct 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/851
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
Disclosed is a display substrate, comprising a display area and a non-display area surrounding the display area. At least one limit mark group is disposed in the non-display area; the display area has a plurality of sides, and rounded chamfers are formed between adjacent two sides; the non-display area includes a frame part opposite to the sides of the display area and corner parts opposite to the rounded chamfers; and the limit mark group is located at the corner part. Accordingly, the disclosure also provides an organic light emitting device, a film vapor-deposition detecting method of an organic light emitting device, and a display device. According to the disclosure, it is possible to reduce the display defect and the accuracy of film vapor-deposition detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.