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:
Jan. 09, 2001
Filed:
Jun. 29, 1998
Kazuo Tokura, Tokyo, JP;
Yukio Nakamura, Tokyo, JP;
Mitsuhiko Ogihara, Tokyo, JP;
Masumi Taninaka, Tokyo, JP;
Oki Data Corporation, Tokyo, JP;
Abstract
To achieve a reduction in the size of the print head and a reduction in the cost, LED array chips,achieved by matrix-connecting M×N LED elements,with M pad electrodes to be scanned,and N pad electrodes to be driven,and LED array drive ICs,are mounted at a mounting substrate,The pad electrodes to be driven,are connected with drive pad electrodes,and the pad electrodes to be scanned,are connected with scan pad electrodes,through wires,and,respectively. The pad electrodes to be driven,and the pad electrodes to be scanned,are provided in a single row along one side or edge of the lengthwise side of the chip. The LED array drive ICs,are provided with a scan control unit that sequentially validates the M pad electrodes to be scanned,one at a time based upon a scan signal and a data control unit that supplies drive currents to the N pad electrodes to be driven,in conformance to individual sets of data to cause N LED elements,connected with a valid pad electrode to be scanned,to emit light, each time the valid pad electrode to be scanned,is switched.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile