10-08-2017 дата публикации
Номер: US20170229360A1
Принадлежит:
A frame lid for use with a semiconductor package is disclosed. First, a mask is applied to a top surface of the lid and over a central area of the top surface to define a peripheral area. Next, a seal ring is formed by metallizing the peripheral area and the sidewall of the plate. The mask can then be removed obtain the frame lid. Next, a solder preform can be attached to the seal ring. This reduces pullback and shrinkage of the metallized layer, while lowering the manufacturing cost and process times. 1. A frame lid comprising:a plate comprising a top surface, a bottom surface, and a sidewall joining the top surface and the bottom surface together;a seal ring on a peripheral area of the top surface and the sidewall of the plate, anda solder preform attached to the seal ring on the peripheral area.2. The frame lid of claim 1 , wherein the plate is made from beryllium-copper claim 1 , molybdenum claim 1 , bronze claim 1 , glass claim 1 , an iron-nickel-cobalt alloy claim 1 , or a ceramic selected from the group consisting of alumina (AlO) claim 1 , beryllia (BeO) claim 1 , aluminum nitride (AlN) claim 1 , zirconia toughened alumina (ZTA) claim 1 , SiC claim 1 , and SiN.3. The frame lid of claim 1 , wherein the seal ring is formed from a metal selected from the group consisting of silver claim 1 , palladium claim 1 , platinum claim 1 , nickel claim 1 , gold claim 1 , titanium claim 1 , tungsten-copper-nickel claim 1 , palladium-gold-tin claim 1 , and alloys thereof.4. The frame lid of claim 1 , wherein the solder preform is formed from a gold-tin alloy claim 1 , a lead-based alloy claim 1 , or a lead-free alloy.5. The frame lid of claim 1 , wherein the top surface and the bottom surface are parallel.6. The frame lid of claim 1 , wherein the plate has a thickness of about 0.5 millimeters to about 1 millimeter.7. The frame lid of claim 1 , wherein the plate is formed from a non-magnetic material.8. The frame lid of claim 1 , wherein the seal ring on the peripheral area ...
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