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:
Nov. 10, 2015
Filed:
Dec. 09, 2009
Alex Henzen, Bladel, NL;
Daniel Wiermans, Sittard, NL;
Patrick Janssen, Eindhoven, NL;
HJ FOREVER PATENTS B.V., Rotterdam, NL;
Abstract
A display apparatus comprises pixels () associated with intersections of select electrodes () and data electrodes () and having a bistable operation. A select driver () supplies select voltages (VG) to the select electrodes () to select a group of pixels (). A data driver () supplies data voltages (VD) to the data electrodes () to supply the data voltages (VD) to the group of pixels () being selected. A common driver () supplies a backplane voltage (VB) to a common electrode () common for the group of pixels (). A controller () controls the select driver (), the data driver () and the common driver (), in the order mentioned: (a) to change the select voltage (VG) to its on-level (on) at which the group of pixels () are selected, after the backplane voltage (VB) and the data voltage (VD) for the group of pixels () have a same first non-zero level (+15V), or before the backplane voltage (VB) and the data voltage (VD) for the group of pixels () are simultaneously changed to the same first non-zero level (+15V), (b) to change the data voltages (VD) in accordance with display data () defining an optical state of the individual pixels () of the group of pixels (), (c) to change the select voltage (VG) to its off-level (off) at which the group of pixels () are not selected, (d) to change the select voltage (VG) to its on-level (on), after the backplane voltage (VB) and the data voltage (VD) for the group of pixels () have a same second non-zero level (−15V), or before the backplane voltage (VB) and the data voltage (VD) for the group of pixels () are simultaneously changed to the same second non-zero level (−15V), and (e) to change the data voltages (VD) in accordance with the display data ().