摘要:
The invention relates to a pressure sensor comprising a flexible membrane deformable in response to a pressure, which covers a cavity (2) and which comprises a strain gauge (21) that produces signals corresponding to the deformation of the flexible membrane, wherein the flexible membrane is a flexible monolithic integrated circuit foil (10). In this way the semiconductor integrated circuit itself serves as the flexible membrane, leading to a less complex fabrication process.
摘要:
A flexible device has an integrated circuit and an antenna incorporated or directly coupled to an interconnect structure of the integrated circuit. The interconnect structure extends outside of the active area. An electrically insulating or dielectric layer is present as support layer for both antenna and integrated circuit. The substrate is removed outside the active areas of the integrated circuit.
摘要:
The electronic device comprises a semiconductor substrate (10) with at a first side (1) a circuit of semiconductor elements (20). The substrate (10) is present between a carrier (40) and an encapsulation (70), so that the first side (1) of the substrate (10) faces the carrier (40). The circuit of semiconductor elements (20) is coupled with conductor tracks (25) to a metallization (82) in a groove (80) in the encapsulation (70), which metallization (82) extends to terminals (90) at an outside of the encapsulation (70). At least one further electrical element (120) is defined between the first side (1) of the semiconductor substrate (10) and the encapsulation (70). This further element (120) is provided with at least one conductor track (65) extending to the metallization (82) in the groove (80) so as to incorporate the further element (120) in the circuit of semiconductor elements (20) on the first side (1) of the substrate (10).
摘要:
The device (100) comprises a MEMS element (60) in a cavity (30) that is closed by a packaging portion (17) on a second side (2) of the substrate (10). Contact pads (25) are defined on a flexible resin layer (13) on an opposite first side (1) of the substrate. Electrical connections (32) extend through the resin layer (13) to at least one element of the device (100). The device (100) is suitably made with the use of a temporary carrier (42), and opening of etching holes (18) from the second side (2) of the substrate (10).
摘要:
The present invention relates to a method for producing a substrate with at least one covered via that electrically and preferably also thermally connects a first substrate side with an opposite second substrate side. The processing involves forming a trench on a the first substrate side remains and covering the trench with a permanent layer on top of a temporary, sacrificial cap-layer, which is decomposed in a thermal process step. The method of the invention provides alternative ways to remove decomposition products of the sacrificial cap-layer material without remaining traces or contamination even in the presence of the permanent layer This is, according to a first aspect of the invention, achieved by providing the substrate trench with an overcoat layer that has holes. The holes in the overcoat layer leave room for the removal of the decomposition products of the cap-layer material. According to the second aspect of the invention, opening the covered trench from the second substrate side and allowing the cap-layer material to be removed through that opening provides a solution. Both methods of the present invention are based on the common idea of using a temporary cap-layer even in a situation where the substrate opening is permanently covered before the removal of the temporary cap-layer
摘要:
The invention relates to a method of manufacturing a semiconductor device (10) in which, in a semiconductor body (1) with a temporary substrate (2), at least one semiconductor element (3) is formed which, on a side of the semiconductor body (1) opposite to the substrate (2), is provided with at least one connection region (4), and, on the said side, a dielectric (5) is formed and patterned to leave free the connection region (4), after which a metal layer (6) is deposited over the dielectric (5) so as to be in contact with the connection region (4), which metal layer (6) serves as an electric connection conductor of the connection region (4), after which the temporary substrate (2) is removed and the metal layer (6) also serves as a substrate of the device (10). According to the invention, before the metal layer (6) is deposited, there is formed, around the patterned part of the dielectric (5) and around the semiconductor element (3), an annular region (7) of a resin having a larger thickness than the dielectric (5), and the metal layer (6) is deposited within the rectangular annular region (7). In this way, an individual device (10) can readily be formed after the metal layer (6) has been deposited, preferably by pushing the device (10) out of the region (7). Preferably, a (different) photoresist is chosen for the dielectric (5) and the region (7). The invention also comprises a semiconductor device (10) obtained in this way.
摘要:
A method of making a comparatively small substrate (12) compatible with manufacturing equipment for a larger-size standard substrate is disclosed. The standard substrate (1) has a surface (10) in which a depression (8) is formed, in which depression the small substrate is connected by means of a layer of a bonding material (13). The depression is formed so as to have a flat bottom (9) extending parallel to the surface. The depression has a depth such that, after the small substrate has been connected with its rear side to the bottom of the depression of the standard substrate by means of the layer of bonding material, the front side (14) of the small substrate forms a free surface which practically coincides with the surface (10) of the carrier wafer. When the standard substrate with the small substrate positioned in the depression is placed into a lithographic stepper, the free surface of the small substrate is placed automatically in a position such that patterns having very small dimensions can be projected onto a photoresist layer formed on said free surface.
摘要:
The semiconductor device (100) comprises an integrated circuit (20) and a first and a second contact face (31,33). These are connected with vertical interconnects (32,34) to the integrated circuit (20). This integrated circuit (20) is present in a semiconductor layer of a substrate. This substrate is absent in a non-active area (B). This leads to the fact that on the side faces (101) of the device (100) neither conductive material nor parts of the semiconductor substrate are exposed. On lamination of the device between two metallized foils into an identification label, the risk of short-circuitry due to undesired contact at the side face (101) of the device (100), is prevented thereby.
摘要:
The invention relates to a method of manufacturing a thermoelectric device (10), in particular a thermoelectric generator (10), comprising a flexible foil (1) on which two groups (2, 3) of series-connected strip-shaped parts (2A, 3A) are formed, where the materials chosen for the two groups of parts (2A, 3A) are materials with a different thermoelectric coefficient and said two groups of parts are formed in a pattern (100) such that the connections (4) between one part (2A) of one group (2) and another part (3A) of the other group (3) are alternately positioned in two spaced apart areas (G1, G2) of the foil (1), and after the formation of the parts (2A, 3A) on a substrate (5), the foil (1) is attached to the stripshaped parts (2A, 3A), after which the substrate (5) is removed. According to the invention, for the substrate (5) use is made of a rigid (=relatively thick) substrate (5), and before the substrate (5) is removed a rigid (=relatively thick) carrier plate (6) is attached to the foil (1) that is removed again from the foil (1) after removal of the rigid substrate (5). In this way, the method is particularly suitable for the use of semiconductor substrates (5) which can be rapidly removed by chemical-mechanical polishing. Preferably, the foil (1) with the device (10) is folded or coiled before use.
摘要:
A simple method of manufacturing a magnetic head having a head face and including a planar magnetic coil (7) which extends parallel to the head face. According to the method, the magnetic coil is formed at a first side of a first substrate (1). Thereafter, the first substrate provided with the magnetic coil is adhered with its first side to a side of a second substrate, whereafter material of the first substrate is removed from a second side of the first substrate (9), the second side being turned away from the first side, in order to form the head face, in such a manner that the magnetic coil is situated near to the head face.