Information input/output display device
US4719457A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1985 |
| Grant date | Jan 12, 1988 |
| Priority date | — |
| Expiry date | Feb 15, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/041
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An information input/output display device comprising a dielectric which is held in a portion between one electrode and the other electrode opposite to each other and which has at least a first state and a second state of unequal capacitances, means to change the capacitance of the dielectric, capacitance holding means to hold at least temporarily a value of the capacitance of the dielectric in the first state, and means to compare the value of the capacitance of the dielectric with the value of the capacitance held by the capacitance holding means, whereby information can be read out without being affected by fluctuations in a distance d between the electrodes or/and in an ambient temperature T.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.