Invention Application
- Patent Title: POLYMER THICK FILM RESISTOR, LAYOUT CELL, AND METHOD
- Patent Title (中): 聚合物厚膜电阻,布局单元和方法
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Application No.: PCT/US2004014665Application Date: 2004-05-11
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Publication No.: WO2004109719A3Publication Date: 2005-04-21
- Inventor: DUNN GREGORY J , CHELINI REMY J , SAVIC JOVICA
- Applicant: MOTOROLA INC , DUNN GREGORY J , CHELINI REMY J , SAVIC JOVICA
- Assignee: MOTOROLA INC,DUNN GREGORY J,CHELINI REMY J,SAVIC JOVICA
- Current Assignee: MOTOROLA INC,DUNN GREGORY J,CHELINI REMY J,SAVIC JOVICA
- Priority: US44899303 2003-05-30
- Main IPC: H01C7/00
- IPC: H01C7/00 ; H01C17/065 ; H05K1/02 ; H05K1/09 ; H05K1/16 ; H05K3/12 ; H01C1/012
Abstract:
A printed circuit polymer thick film (PTF) resistor (410, 420) includes tolerance control material (425, 426, 440) that substantially surrounds the resistor body (423) and significantly improves the linearity of resistance vs. resistor length, and significantly reduces resistor-to-resistor and board-to-board fabrication variances. In one embodiment (420), the tolerance control material is the same metallic material as the printed circuit conductors (430), and is formed in two finger patterns on each side of the resistor body, each finger pattern connected to one terminal pad (435) of the resistor. A layout cell (700) is used for fabricating the PTF resistor. A method is used for fabricating the PTF resistor.
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