公开(公告)号：WO1981001079A1

公开(公告)日：1981-04-16

申请号：PCT/US1980001202

申请日：1980-09-15

Applicant: MOTOROLA INC

Inventor： MOTOROLA INC ,  GELLER G ,  BEDARD B

IPC: H01P03/08

CPC classification number: H01P11/00 ,  H01L21/268 ,  H01L27/016 ,  H01P1/205 ,  H05K1/0293 ,  H05K1/0306 ,  H05K3/027 ,  H05K3/388 ,  H05K2201/09736 ,  H05K2203/107 ,  H05K2203/171 ,  H05K2203/175 ,  Y10T29/49004

Abstract: A thin film structure is provided with the capability of low-power laser tuning and trimming. Trim windows (14) in a plated ground plane (12) are incorporated to allow automated tuning procedures using relatively low-power lasers. The trim windows are conductive, but the heavier layer (25) of plated copper is omitted from those areas, leaving only the titanium/evaporated copper/gold layers (18, 20, 26). The method can also provide for areas (28) of bare substrate if desired.

公开(公告)号：WO1981000786A1

公开(公告)日：1981-03-19

申请号：PCT/US1980001052

申请日：1980-08-15

Applicant: MOTOROLA INC

Inventor： MOTOROLA INC ,  SUPPELSA A ,  MARTIN W ,  GELLER G

IPC: H01G07/00

CPC classification number: H01G4/008 ,  H01G4/255 ,  Y10T29/435

Abstract: Thick film capacitors with screened electrodes can not be laser trimmed without damage to the dielectric. To solve this problem a thick film capacitor, with a first electrode (12), at least one dielectric layer formed from paste (14, 16) and a thin second electrode (18) are formed on a substrate (10). The second electrode (18) is formed from an organo-metallic paste including gold atoms which electrode has a thickness of about 1 micron. This thin electrode (18) can be trimmed by a low energy laser beam (20).

Abstract translation: 具有屏蔽电极的厚膜电容器不能在不损坏电介质的情况下进行激光修整。 为了解决这个问题，在基板（10）上形成具有第一电极（12）的至少一个由浆料（14,16）形成的介电层和薄的第二电极（18）的厚膜电容器。 第二电极（18）由包含金原子的有机金属膏形成，该电极具有约1微米的厚度。 该薄电极（18）可由低能量激光束（20）修整。