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. 20, 1989
Filed:
Nov. 13, 1987
Anthony J Bernot, Gilbert, AZ (US);
Michael J Johnson, Phoenix, AZ (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
A liquid crystal display is described that includes gray scale capability. Each pixel of the display is subdivided into a plurality of subpixels. Each subpixel includes an effective capacitor, with the liquid crystal material contained between the effective capacitor plates, and includes a control capacitor coupled in series with the effective capacitor. By controlling the capacitance of the control capacitors of the subpixels, selected subpixels can be activated as a function of the voltage applied across the series capacitors. By controlling the number of subpixels that are activated by the applied voltage, a gray scale capability can be provided for a liquid crystal display.