Thin-film electroluminescent display panel sealed by glass substrates and the fabrication method thereof
US4213074A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1978 |
| Grant date | Jul 15, 1980 |
| Priority date | — |
| Expiry date | Jun 14, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B33/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thin-film electroluminescent display panel is sealed by a pair of glass substrates for protecting itself from the environment. A protective liquid is introduced between a counter glass substrate and a substrate for supporting the electroluminescent display panel. The protective liquid comprises silicon oil or grease which assures the thin-film electroluminescent panel of preservation of the electroluminescent display panel. The counter glass substrate is bonded to the substrate through an adhesive of, for example, photocuring resin. A capillary tube is provided within the substrate for injecting the liquid under vacuum conditions. The counter glass substrate can be plate-shaped thereby eliminating a spacer. The liquid has the ability of spreading into pin holes generated on dielectric layers, and is resistant to high voltage, high humidity and high temperature, and is inert to layers constituting the thin-film electroluminescent display panel and has a small vapor pressure and a small coefficient of thermal expansion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.