Patent ID: 7820493
Filing Date: 2010-10-26
Classification: H01L

Abstract:
1. A method of configuring or reconfiguring a circuit, the method comprising: irradiating at least one first lens on or near a surface of said circuit sufficient to electrically disconnect a corresponding first fuse and disable a first configuration of said circuit, wherein the at least one first lens at least partially focuses a first wavelength of light onto a third lens under said first lens and over said first fuse; and irradiating at least one second lens on or near said surface of said circuit sufficient to electrically disconnect a corresponding second fuse and enable a second configuration of said circuit, wherein the at least one second lens at least partially focuses said light having said first wavelength onto a fourth lens under said second lens and over said second fuse, wherein said first, second, third, and fourth lenses are substantially opaque to the first wavelength of light and said third and fourth lens are configured to at least partially focus light having said first wavelength from said first and second lenses, respectively, onto said first and second fuses, respectively, and said first and second fuses are electrically coupled to corresponding first and second circuit elements and are configured to absorb said first wavelength of light.