The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 2001
Filed:
Nov. 24, 1998
Takae Ito, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A liquid crystal display device for displaying a predetermined display data on selected pixels on a liquid crystal display panel is disclosed. The liquid crystal display device includes a maximum amplitude display data detecting unit for detecting the display data corresponding to the maximum drive voltage having a maximum amplitude outputted from a data driver; and a variable output voltage type power source circuit portion for generating a power source voltage to be applied to the data driver and capable of changing the power source voltage based on the result of detection by the maximum amplitude display data detecting unit. The variable output voltage type power source circuit portion selects the power source voltage required for displaying the display data and supplies the selected power source voltage to the data driver for each predetermined period, for example, each one-frame period. A drive circuit for the liquid crystal display device of this configuration and a method for driving the liquid crystal display device by the drive circuit are also disclosed.