Freescale Semiconductor,inc.

Nxp Usa, Inc.

Other

Wai Yew Lo

Lan Chu Tan

Kong Bee Tiu

Chee Seng Foong

Heng Keong Yip

Chin Teck Siong

Teck Beng Lau

Jinzhong Yao

Boon Yew Low

Xuesong Xu

Ly Hoon Khoo

Wen Shi Koh

Azhar Aripin

Fui Yee Lim

Kai Yun Yow

Poh Leng Eu

Cheng Choi Yong

Ruzaini B Ibrahim

Zi Song Poh

Aminuddin Ismail

Boon Seong Lee

Kar Yoke Ong

Bee Hoon Liau

Jin- Mei Liu

Jian- Hong Wang

Jin- Zhong Yao

Fu- Bin Song

A packaged semiconductor device includes a substrate having input/output (I/O) pads, a semiconductor die attached to the substrate and electrically connected to the substrate with bond wires. A bond-wire reinforcement structure is formed over the bond wires before the assembly is covered with a molding compound. The bond-wire reinforcement structure prevents wire sweep during molding and protects the wires from shorting with other wires. In one embodiment, the bond-wire reinforcement structure is formed with a fiberglass and liquid epoxy mixture.

Semiconductor device with bond wire reinforcement structure

A universal substrate for assembling ball grid array (BGA) type integrated circuit packages has a non-conducting matrix, an array of conducting vias extending between top and bottom surfaces of the matrix, and one or more instances of each of two or more different types of fiducial pairs on the top surface of the matrix. Each instance of each different fiducial pair indicates a location of a different via sub-array of the substrate for a different BGA package of a particular package size. The same substrate can be used to assemble BGA packages of different size, thereby avoiding having to design a different substrate for each different BGA package size.

Universal BGA substrate

A cavity-down pressure sensor device has a pressure-sensing die that is electrically connected to a master control unit (MCU) using face-to-face bonding. Connecting the pressure-sensing die in this manner avoids the need to wire bond the pressure-sensing die to the master control unit.

Cavity-down pressure sensor device

A semiconductor sensor device includes a device substrate, a micro-controller unit (MCU) die attached to the substrate, and a packaged pressure sensor having a sensor substrate and a pressure sensor die. The sensor substrate has a front side with the pressure sensor die attached to it, a back side, and an opening from the front side to the back side. A molding compound encapsulates the MCU die, the device substrate, and the packaged pressure sensor. A back side of the sensor substrate and the opening in the sensor substrate are exposed on an outer surface of the molding compound.

Package-in-package semiconductor sensor device

A semiconductor pressure sensor device having a pressure-sensing die electrically connected to a microcontrol unit (MCU) using either through silicon vias (TSVs) or flip-chip bumps. An active surface of the pressure-sensing die is in facing relationship with the MCU. These embodiments avoid the need to used bonds to electrically connect the pressure-sensing die to the MCU, thereby saving time, reducing size, and reducing cost.

Pressure sensor device with through silicon via

A semiconductor package includes a lead frame having an interior region and leads surrounding the interior region, an integrated circuit, a region of insulating material, and a power bar. The integrated circuit, which is disposed in the interior region, has bond pads and electrical couplings (e.g., bond wires) between the bond pads and the leads. The region of insulating material is disposed on at least some of the lead frame leads and the power bar is disposed on the region of insulating material. There also are electrical couplings between the power bar and at least some of the bond pads.

Semiconductor package with lead mounted power bar

A semiconductor device includes a lead frame having a flag and leads that surround the flag. The leads include a dummy lead that has first and second wire bonding areas. A first die is attached on the flag and electrically connected to the first wire bonding area. The first die and the first wire bonding area are encapsulated with a molding material and a cavity with an opening is formed above the first die. The second wire bonding area is exposed in the cavity. A second die is placed in the cavity and electrically connected to the second wire bonding area such that the second die is electrically connected to the first die by way of the dummy lead.

Multi-die sensor device

A semiconductor sensor device is packaged using a footed lid instead of a pre-molded lead frame. A semiconductor sensor die is attached to a first side of a lead frame. The die is then electrically connected to leads of the lead frame. A gel material is dispensed onto the sensor die. The footed lid is attached to the substrate such that the footed lid covers the sensor die and the electrical connections between the die and the lead frame. A molding compound is then formed over the substrate and the footed lid such that the molding compound covers the substrate, the sensor die and the footed lid.

Semiconductor sensor device with footed lid

A Quad Flat Package (QFP) semiconductor device has a multi-stepped lead frame for forming rows of external contacts. A semiconductor die is attached to a die pad of the lead frame and electrically connected to lead with bond wires. The die and bond wires are encapsulated with a mold compound and then multiple cuts are made to the lead frame to form the rows of external contacts.

Quad flat semiconductor device with additional contacts

A pressure sensor device is assembled by forming cavities on a surface of a metal sheet and then forming an electrically conductive pattern having traces and bumps over the cavities. An insulating layer is formed on top of the pattern and then processed to form exposed areas and die attach areas on the surface of the metal sheet. The exposed areas are plated with a conductive metal and then electrically connected to respective ones of the bumps. A gel is dispensed on the die attach areas and sensor dies are attached to respective die attach areas. One or more additional semiconductor dies are attached to the insulating layer and bond pads of these dies are electrically connected to the exposed plated areas. A molding compound is dispensed such that it covers the sensor die and the additional dies. The metal sheet is removed to expose outer surfaces of the bumps.

Pressure sensor device having bump chip carrier (BCC)

A self-powered circuit package includes a substrate and an integrated circuit (IC). The IC is mounted on a surface of the substrate. An electrical interconnector electrically couples the IC to the substrate. A solar cell is provided having opposing first and second main surfaces. A portion of the first main surface of the solar cell is configured to receive light from an external source. The solar cell converts energy of the received light into electrical power. The solar cell is disposed above the IC and electrically connected to the IC by way of the substrate to supply the generated power to the IC. A clear mold compound encapsulates a surface of the substrate, the IC, the electrical interconnector, and the solar cell.

Solar powered IC chip

A method of packaging a pressure sensor die includes providing a lead frame having a die pad and lead fingers that surround the die pad. A tape is attached to a first side of the lead frame. A pressure sensor die is attached to the die pad on a second side of the lead frame and bond pads of the die are connected to the lead fingers. An encapsulant is dispensed onto the second side of the lead frame and covers the lead fingers and the electrical connections thereto. A gel is dispensed onto a top surface of the die and covers the die bond pads and the electrical connections thereto. A lid is attached to the lead frame and covers the die and the gel, and sides of the lid penetrate the encapsulant.

Pressure sensor and method of packaging same

A self-powered integrated circuit (IC) device includes a lead frame and a solar cell having first and second main surfaces. The solar cell is mounted on a surface of the lead frame. An IC chip is also provided. A first electrical interconnector electrically couples the IC chip to the lead frame and a second electrical interconnector electrically couples the solar cell to the IC chip. A portion of the first main surface of the solar cell is configured to receive light from an external source. The solar cell converts energy of the received light into electrical power that is supplied to the IC chip. A mold compound encapsulates the IC chip, the first and second electrical interconnectors, and at least a portion of the solar cell.

Growing community of inventors

Petaling Jaya, Malaysia

Wai Yew Lo