Abstract: The invention is to a mounting device (12) and to a method of mounting a semiconductor die (11) to a mounting surface (10) to ensure that the die (11) is in a plane parallel to the mounting surface (10). An intermediate woven mounting device (12) having two parallel faces and having a plurality of co-planer mounting points (13a and 14a) on each of the parallel faces is placed on a semiconductor mounting surface (10) and the semiconductor die (11) is placed on the intermediate device. Along with a die attach adhesive, heat and pressure is applied to secure the semiconductor die (11) and intermediate mounting device (12) to the mounting surface (10).

Abstract: This is a system and method of forming an electrical contact to the optical coating of an infrared detector. The method may comprise: forming thermal isolation trenches 22 and contact vias 23 in a substrate 20; depositing a bias contact metal 32 into the vias 23 forming biasing contact areas around a periphery of the substrate 20; depositing a first trench filler 24 in the trenches 22 and vias 23; replanarizing; depositing a common electrode layer 25 over the thermal isolation trenches and the biasing contact areas; mechanically thinning the substrate 20 to expose the biasing contact area 32 and the trench filler 24; depositing a contact metal 34 on the backside of the substrate 20, the exposed trench filler 24 and the exposed bias contact area; and etching the contact metal 34 and the trench filler 24 to form pixel mesas of the contact metal 34 and the substrate 20. The thermal isolation trenches 22 and the bias contact vias 23 may be formed by ion milling or laser vaporization.

Abstract: This is a system and method of forming an electrical contact to the optical coating of an infrared detector. The method may comprise: forming thermal isolation trenches 22 in a substrate 20; depositing a trench filler 24 in the thermal isolation trenches 22; depositing a common electrode layer 31 over the thermal isolation trenches 22; depositing an optical coating 26 above the common electrode layer 31; mechanically thinning the substrate to expose the trench filler 24; etching to remove the trench filler 24 in the bias contact area; depositing a contact metal 34 on the backside of the substrate 20, wherein the contact metal 34 connects to the common electrode layer 31 at bias contact areas 34 around a periphery of the thermal isolation trenches; and etching the contact metal 34 and the trench filler 24 to form pixel mesas of the contact metal 34 and the substrate 20. Bias contact vias 23 may be formed in the bias contact areas and then filled with bias contact metal 49.

Abstract: This is a system and method of forming an electrical contact to the optical coating of an infrared detector. The method may comprise: forming thermal isolation trenches 22 in a substrate 20; depositing a trench filler 24 in the thermal isolation trenches 22; depositing a common electrode layer 31 over the thermal isolation trenches 22; depositing an optical coating 26 above the common electrode layer 31; mechanically thinning the substrate to expose the trench filler 24; etching to remove the trench filler 24 in the bias contact area; depositing a contact metal 34 on the backside of the substrate 20, wherein the contact metal 34 connects to the common electrode layer 31 at bias contact areas 34 around a periphery of the thermal isolation trenches; and etching the contact metal 34 and the trench filler 24 to form pixel mesas of the contact metal 34 and the substrate 20. Bias contact vias 23 may be formed in the bias contact areas and then filled with bias contact metal 49.

Abstract: This is a system and method of forming an electrical contact to the optical coating of an infrared detector. The method may comprise: forming thermal isolation trenches 22 in a substrate 20; depositing a trench filler 24 in the thermal isolation trenches 22; depositing a common electrode layer 31 over the thermal isolation trenches 22; depositing an optical coating 26 above the common electrode layer 31; mechanically thinning the substrate to expose the trench filler 24; etching to remove the trench filler 24 in the bias contact area; depositing a contact metal 34 on the backside of the substrate 20, wherein the contact metal 34 connects to the common electrode layer 31 at bias contact areas 34 around a periphery of the thermal isolation trenches; and etching the contact metal 34 and the trench filler 24 to form pixel mesas of the contact metal 34 and the substrate 20. Bias contact vias 23 may be formed in the bias contact areas and then filled with bias contact metal 49.

Abstract: This is a system and method of forming an electrical contact to the optical coating of an infrared detector using conductive epoxy. The method may comprise: forming thermal isolation trenches 22 and bias contact vias 23 in a substrate 20; depositing a trench filler 24 in the thermal isolation trenches 22; depositing conductive epoxy 50 into the bias contact vias 23; replanarizing; depositing a common electrode layer 31 over the thermal isolation trenches 22 and vias 23; depositing an optical coating 26 above the common electrode layer 31; mechanically polishing a backside of the substrate 20 to expose the trench filler 24 and conductive epoxy 50; depositing a contact metal 34 on the backside of the substrate 20; etching the contact metal 34 and the trench filler 24 to form pixel mesas of the contact metal 34 and the substrate 20.

Abstract: A thermal detection system (10) includes a focal plane array (12), a thermal isolation structure (14), and an integrated circuit substrate (16). Focal plane array (12) includes thermal sensors (28), each having an associated thermal sensitive element (30). Thermal sensitive element (30) is coupled with one side to infrared absorber and common electrode assembly (36) and on the opposite side to an associated contact pad (20) disposed on the integrated circuit substrate (16). Reticulation kerfs (52a, 52b) separate adjacent thermal sensitive elements (30a, 30b, 30c) by a distance at least half the average width (44, 46) of a single thermal sensitive element (30a, 30b, 30c). A continuous, non-reticulated optical coating (38) may be disposed over thermal sensitive elements (30a, 30b, 30c) to maximize absorption of thermal radiation incident to focal plane array (12).

Abstract: This is a system and method of forming an electrical contact to the optical coating of an infrared detector. The method may comprise: forming thermal isolation trenches 22 and contact vias 23 in a substrate 20; depositing a bias contact metal 32 into the vias 23 forming biasing contact areas around a periphery of the substrate 20; depositing a first trench filler 24 in the trenches 22 and vias 23; replanarizing; depositing a common electrode layer 25 over the thermal isolation trenches and the biasing contact areas; mechanically thinning the substrate 20 to expose the biasing contact area 32 and the trench filler 24; depositing a contact metal 34 on the backside of the substrate 20, the exposed trench filler 24 and the exposed bias contact area; and etching the contact metal 34 and the trench filler 24 to form pixel mesas of the contact metal 34 and the substrate 20. The thermal isolation trenches 22 and the bias contact vias 23 may be formed by ion milling or laser vaporization.

Abstract: A thermal isolation structure (10) is disposed between a focal plane array and an integrated circuit substrate (12). The thermal isolation structure (10) includes a mesa-type formation (16) and a mesa strip conductor (18, 26) extending from the top of the mesa-type formation (16) to an associated contact pad (14) on the integrated circuit substrate (12). After formation of the mesa-type formation (16) and the mesa strip conductor (18, 26), an anisotropic etch using the mesa strip conductor (18, 26) as an etch mask removes excess mesa material to form trimmed mesa-type formation (24) for improved thermal isolation. Bump bonding material (20) may be deposited on mesa strip conductor (18, 26) and can also be used as an etch mask during the anisotropic etch. Thermal isolation structure (100) can include mesa-type formations (102), each with a centrally located via (110) extending vertically to an associated contact pad (104) of integrated circuit substrate (106).

Abstract: A system for infrared sensing has thermally sensitive picture elements within a substrate; bias contact areas within the substrate and around a periphery of the thermally sensitive picture elements; a common electrode on a front side of the thermally sensitive picture elements and the bias contact areas; an optical coating on top of the common electrode; a first electrical contact metal on a backside of the thermally sensitive picture elements; and a second electrical contact metal connected to the bias contact areas on a backside of the bias contact areas and electrically connected to the common electrode. The bias contact areas may include a conductive substrate area. In addition, the device may be connected to an integrated circuit by an ohmic connection to the first and/or the second electrical contact metal.

Abstract: This is a system and method of forming an electrical contact to the optical coating of an infrared detector using conductive epoxy. The method may comprise: forming thermal isolation trenches 22 and bias contact vias 23 in a substrate 20; depositing a trench filler 24 in the thermal isolation trenches 22; depositing conductive epoxy 50 into the bias contact vias 23; replanarizing; depositing a common electrode layer 31 over the thermal isolation trenches 22 and vias 23; depositing an optical coating 26 above the common electrode layer 31; mechanically polishing a backside of the substrate 20 to expose the trench filler 24 and conductive epoxy 50; depositing a contact metal 34 on the backside of the substrate 20; etching the contact metal 34 and the trench filler 24 to form pixel mesas of the contact metal 34 and the substrate 20.

Abstract: A thermal isolation structure (10) is disposed between a focal plane array and an integrated circuit substrate (12). The thermal isolation structure (10) includes a mesa-type formation (16) and a mesa strip conductor (18, 26) extending from the top of the mesa-type formation (16) to an associated contact pad (14) on the integrated circuit substrate (12). After formation of the mesa-type formation (16) and the mesa strip conductor (18, 26), an anisotropic etch using the mesa strip conductor (18, 26) as an etch mask removes excess mesa material to form trimmed mesa-type formation (24) for improved thermal isolation. Bump bonding material (20) may be deposited on mesa strip conductor (18, 26) and can also be used as an etch mask during the anisotropic etch. Thermal isolation structure (100) can include mesa-type formations (102), each with a centrally located via (110) extending vertically to an associated contact pad (104) of integrated circuit substrate (106).

Abstract: A thermal detection system (10) includes a focal plane array (12), a thermal isolation structure (14), and an integrated circuit substrate (16). Focal plane array (12) includes thermal sensors (28), each having an associated thermal sensitive element (30). Thermal sensitive element (30) is coupled with one side to infrared absorber and common electrode assembly (36) and on the opposite side to an associated contact pad (20) disposed on the integrated circuit substrate (16). Reticulation kerfs (52a, 52b) separate adjacent thermal sensitive elements (30a, 30b, 30c) by a distance at least half the average width (44, 46) of a single thermal sensitive element (30a, 30b, 30c). A continuous, non-reticulated optical coating (38) may be disposed over thermal sensitive elements (30a, 30b, 30c) to maximize absorption of thermal radiation incident to focal plane array (12).