Display device having display surfaces with polarizing plates
US7495382B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2004 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Sep 14, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/3031
Abstract
As for the dual emission display device, since light is emitted to the opposite directions from a light emitting element, the both electrodes provided opposite to the light emitting element are transparent/translucent. Accordingly, difficulty in black display is created, and thus, the contrast would be reduced. That results from that the back of the display device can be seen through in black display, that is in the OFF state, since the both electrodes have transparency. Addressing the difficulty in black display with respect to an electronic device and the like including a dual emission display device achieving reduction in the thickness and light weighting, pure black display is performed by providing the dual emission display device part with a polarizing plate or a circularly polarizing plate. Further, the contrast can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.