LCD device having relationship between spontaneous polarization and capacitance
US6046790A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1999 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Mar 19, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A liquid crystal display device is constituted so that liquid crystal having an inherent spontaneous polarization or a spontaneous polarization induced by applying an electric field is interposed between a pixel electrode disposed in matrix and a counter electrode, and a display signal is applied to the pixel electrode through a switching element. In the liquid crystal display device constituted mentioned above, when an electrostatic capacitance of one pixel is C.sub.LC (F), a spontaneous polarization per unit electrode area of the liquid crystal is P.sub.s (C/m.sup.2), a voltage applied between the pixel electrode and the counter electrode is E (V), a pixel electrode area of one pixel is A (m.sup.2), and a storage capacitance for one pixel is C.sub.s (F), they satisfy the following equation; EQU P.sub.s .times.A.ltoreq.5.times.(C.sub.s +C.sub.LC).times.E(1) Thereby, a display of high contrast and high response speed can be obtained. Further, a display of low power consumption and excellent display uniformity, that is, excellent image quality can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.