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:
May. 05, 2009
Filed:
Aug. 17, 2006
Chien-hung Liu, Chu-Tung, TW;
Jian-chiun Liou, Chu-Tung, TW;
Chi-ming Huang, Chu-Tung, TW;
Chia-cheng Chiao, Chu-Tung, TW;
Chun-jung Chen, Chu-Tung, TW;
Chien-Hung Liu, Chu-Tung, TW;
Jian-Chiun Liou, Chu-Tung, TW;
Chi-Ming Huang, Chu-Tung, TW;
Chia-Cheng Chiao, Chu-Tung, TW;
Chun-Jung Chen, Chu-Tung, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
A structure of inkjet-head chip and a method for making the same are disclosed. Driven by the need of making a thin insulator layer to lower the working power of the inkjet-head chip, we separately manufacture a passivation layer and a second conductive layer. The passivation layer and the second conductive layer have to be formed from different materials. The defining means for the passivation layer and the second conductive layer have high selectivity and do not overetch or damage the structure of inkjet-head chip.