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:
Feb. 02, 1999
Filed:
Oct. 02, 1995
David A Zimlich, Boise, ID (US);
Micron Display Technology, Inc., Boise, ID (US);
Abstract
An apparatus is provided for modulating a conductive element in an FED device from a first level to a second level in which the charge on the display is conserved. In one embodiment, the apparatus comprises an analog modulating circuit, a switching circuit, and a switch. The analog modulating circuit receives a feedback signal responsive to an actual row-column voltage difference and a target signal responsive to a desired row-column voltage difference and generates an output signal responsive to the feedback signal and the target signal. The switching circuit generates a switching signal responsive to the feedback signal, the target signal, and a bias signal. The switch connects a reference voltage to the output generated by the analog modulating circuit in response to the switching signal. In another embodiment, the apparatus has a primary modulator having a first input connected to a first signal representative of the second level, an output connected to the conductive element, and a second input connected to a first signal representative of the output; and a connector of a modifying voltage to the output, the connector having a first input connected to a second signal representative of the second level and a second input connected to a second signal responsive to the output.