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公开(公告)号：US6090263A
公开(公告)日：2000-07-18
申请号：US133124
申请日：1998-08-12
CPC分类号： H01L21/4821 , C25D3/12 , C25D5/12 , H01L23/49582 , H01L2924/0002 , Y10S428/929 , Y10S428/935 , Y10T428/12 , Y10T428/12389 , Y10T428/12875 , Y10T428/12889 , Y10T428/12896 , Y10T428/1291 , Y10T428/12937
摘要： A process for depositing a conformable nickel coating on a lead frame is disclosed. The metal lead frame substrate is copper, copper alloy, or nickel alloy. The lead frame substrate is coated with a conformable nickel coating that is crack-resistant when the lead frame is bent to an angle of at least about 82 degrees with a bend radius of about 100 .mu.m to about 300 .mu.m. Cracks do not appear through the thickness of the conformable nickel coating of the present invention when the depth of the deformations that result from this bending do not exceed about 5 .mu.m. The conformable nickel coating is formed using an electroplating bath containing nickel as a nickel complex, a nickel salt, a buffer and a fluorochemical wetting agent.
摘要翻译： 公开了一种用于在引线框架上沉积一致的镍涂层的工艺。 金属引线框架基板是铜，铜合金或镍合金。 引线框架基板涂覆有适形的镍涂层，当引线框架弯曲至少约82度的角度，弯曲半径约为100微米至约300微米时，该涂层是抗裂纹的。 当这种弯曲产生的变形深度不超过约5微米时，裂纹不会出现在本发明的适形镍涂层的厚度上。 使用包含镍作为镍络合物，镍盐，缓冲剂和含氟润湿剂的电镀浴形成适形的镍涂层。
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2.发明授权Conformable nickel coating and process for coating an article with a conformable nickel coating 有权合适的镍涂层和用适合的镍涂层涂覆物品的方法公开(公告)号：US06399220B1
公开(公告)日：2002-06-04
申请号：US09533001
申请日：2000-03-22
IPC分类号： B32B1501
CPC分类号： H01L21/4821 , C25D3/12 , C25D5/12 , H01L23/49582 , H01L2924/0002 , Y10S428/929 , Y10S428/935 , Y10T428/12 , Y10T428/12389 , Y10T428/12875 , Y10T428/12889 , Y10T428/12896 , Y10T428/1291 , Y10T428/12937 , H01L2924/00
摘要： The present invention is directed to a lead frame in which the metal lead frame substrate is copper, copper alloy, or iron alloy. The lead frame substrate is coated with a conformable nickel coating that is crack-resistant when the lead frame is bent to an angle of at least about 82 degrees with a bend radius of about 100 &mgr;m to about 300 &mgr;m. Bending the lead frame in this manner causes surface deformations in the lead frame substrate. Cracks do not appear through the thickness of the conformable nickel coating of the present invention when the depth of the deformations that result from this bending do not exceed about 5 &mgr;m.
摘要翻译： 本发明涉及一种引线框架，其中金属引线框架基板是铜，铜合金或铁合金。 引线框架基板涂覆有适形的镍涂层，当引线框弯曲至至少约82度的角度，弯曲半径为约100μm至约300μm时，该涂层是抗裂纹的。 以这种方式弯曲引线框架引起引线框架基板中的表面变形。 当由该弯曲引起的变形深度不超过约5μm时，裂纹不会穿过本发明的适形镍涂层的厚度。
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3.发明授权Conformable nickel coating and process for coating an article with a conformable nickel coating 失效合适的镍涂层和用适合的镍涂层涂覆物品的方法
公开(公告)号：US5916696A
公开(公告)日：1999-06-29
申请号：US660628
申请日：1996-06-06
CPC分类号： H01L21/4821 , C25D3/12 , C25D5/12 , H01L23/49582 , H01L2924/0002 , Y10S428/929 , Y10S428/935 , Y10T428/12 , Y10T428/12389 , Y10T428/12875 , Y10T428/12889 , Y10T428/12896 , Y10T428/1291 , Y10T428/12937
摘要： The present invention is directed to a lead frame in which the metal lead frame substrate is copper, copper alloy, or nickel alloy. The lead frame substrate is coated with a conformable nickel coating that is crack-resistant when the lead frame is bent to an angle of at least 82 degrees with a bend radius of about 150 .mu.m to about 300 .mu.m. Bending the lead frame in this manner causes surface deformations in the lead frame substrate. Cracks do not appear through the thickness of the conformable nickel coating of the present invention when the depth of the deformations that result from this bending do not exceed about 5 .mu.m.
摘要翻译： 本发明涉及一种引线框架，其中金属引线框架基板是铜，铜合金或镍合金。 引线框架基板上涂有一层适应性的镍涂层，当引线框弯曲到至少82度的角度，弯曲半径约为150微米至约300微米时，该涂层是抗裂纹的。 以这种方式弯曲引线框架引起引线框架基板中的表面变形。 当这种弯曲产生的变形深度不超过约5微米时，裂纹不会出现在本发明的适形镍涂层的厚度上。
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公开(公告)号：US5675177A
公开(公告)日：1997-10-07
申请号：US494476
申请日：1995-06-26
IPC分类号： H01L23/50 , C23C28/02 , H01L23/495
CPC分类号： H01L23/49582 , H01L24/32 , H01L2224/32245 , H01L2224/45124 , H01L2224/45144 , H01L2224/48091 , H01L2224/48247 , H01L2224/48464 , H01L2224/48664 , H01L2224/48764 , H01L2224/73265 , H01L2224/85464 , H01L24/45 , H01L24/48 , H01L24/73 , H01L2924/01012 , H01L2924/01013 , H01L2924/01014 , H01L2924/01028 , H01L2924/01029 , H01L2924/01046 , H01L2924/01078 , H01L2924/01079 , H01L2924/0132 , H01L2924/12042 , H01L2924/14 , H01L2924/181
摘要： A lead frame comprising an ultra-thin composite of noble metal layers on a nickel surface is disclosed. The composite ranges from 2.5 to 11 microinches in thickness and includes in succession from nickel, a 0.5 to 3.5 microinches of palladium or gold strike, a 0.5 to 5 microinches thick palladium-nickel alloy layer having 10 to 90 weight percent nickel by weight of the alloy, a 0.5 to 5 microinches thick palladium layer, and a 0 to 1 microinch thick gold layer. The gold layer is being used whenever it is desirable to achieve high speed of solder wetting, relative to the speed of solder wetting of palladium. Viable ultra-thin coatings are most effectively obtained by deposition of the layers in a reel-to-reel metal deposition process.
摘要翻译： 公开了一种引线框架，其包括在镍表面上的贵金属层的超薄复合物。 复合材料的厚度为2.5至11微英寸，并且包括镍，0.5至3.5微英寸的钯或金击，0.5至5微英寸的钯 - 镍合金层，其具有按重量计的10至90重量％的镍 合金，0.5至5微英寸厚的钯层和0至1微英寸厚的金层。 只要希望相对于钯的焊料润湿速度实现焊接润湿的高速度，就使用金层。 通过在卷对卷金属沉积工艺中沉积这些层来最有效地获得可行的超薄涂层。
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