Ink-jet printing ink of an electron transport layer and its manufacturing method
US10781326B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2017 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Mar 24, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/15
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ink-jet printing ink of an electron transport layer and its preparing method are provided. The method of the disclosure adopts an ionic conjugated polyelectrolyte as a solute and alcohol compounds as a solvent. By adjusting the proportion of each component, viscosity and surface tension to obtain an ink-jet printing ink of the electron transport layer. The ink-jet printing ink meets the manufacturing requirements and is able to be produced by ink-jet printing process. Simultaneously, it avoids a mutually soluble phenomenon occurred between the electron transport layer and the adjacent structural layers during the preparation of the OLED, which is favorable for the production of a full-solution OLED device. According to the above method, the disclosure satisfies the manufacturing requirements of the ink-jet printing and realizes the ink-jet printing type of the electron transport layer, and is favorable for the production of a full-solution OLED device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.