| 摘要 |
PROBLEM TO BE SOLVED: To increase remarkably the number of gradations without increasing the number of sub-fields in one field. SOLUTION: An electrooptical device comprises a control unit which drives pixels by dividing one field into a plurality of sub-fields on a time base. The response speed of liquid crystal is slow and the saturation response time is longer than a sub-field period. As a result, even when an ON voltage is applied to the liquid crystal, for example, only in one prescribed sub-field, transmissivity of the liquid crystal does not reach 100%. Namely, in the transitional period of the transmissivity of the liquid crystal, it is possible to control finely the change of the transmissivity in one sub-field. Thus, display in multiple gradations is possible on the device since the number of gradation can be remarkably increased as compared with the number of sub-fields in one filed. COPYRIGHT: (C)2007,JPO&INPIT
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