摘要:
A packaging method with backside wafer dicing includes the steps of forming a support structure at the front surface of the wafer then depositing a metal layer on a centre area of the backside of the wafer after grinding the wafer backside to reduce the wafer thickness; detecting from the backside of the wafer sections of scribe lines formed in the front surface in the region between the edge of the metal layer and the edge of the wafer and cutting the wafer and the metal layer from the wafer backside along a straight line formed by extending a scribe line section detected from the wafer backside.
摘要:
A bottom source power metal-oxide-semiconductor field-effect transistor (MOSFET) device includes a gate electrode and a source electrode formed on an initial insulation layer on a first surface of a semiconductor chip and a drain electrode formed on a second surface of the semiconductor chip. The source electrode includes a source metal, a source electrode bump formed on the source metal and a source electrode metal layer on top of the source electrode bump. A first insulation layer covers the gate electrode. A through via aligned to the gate electrode is formed from the second surface of the chip to expose a portion of the gate electrode from the second surface.
摘要:
A packaging method with backside wafer dicing includes the steps of forming a support structure at the front surface of the wafer then depositing a metal layer on a center area of the backside of the wafer after grinding the wafer backside to reduce the wafer thickness; detecting from the backside of the wafer sections of scribe lines formed in the front surface in the region between the edge of the metal layer and the edge of the wafer and cutting the wafer and the metal layer from the wafer backside along a straight line formed by extending a scribe line section detected from the wafer backside.
摘要:
A bottom source power metal-oxide-semiconductor field-effect transistor (MOSFET) device includes a gate electrode and a source electrode formed on an initial insulation layer on a first surface of a semiconductor chip and a drain electrode formed on a second surface of the semiconductor chip. The source electrode includes a source metal, a source electrode bump formed on the source metal and a source electrode metal layer on top of the source electrode bump. A first insulation layer covers the gate electrode. A through via aligned to the gate electrode is formed from the second surface of the chip to expose a portion of the gate electrode from the second surface.
摘要:
A bottom source power metal-oxide-semiconductor field-effect transistor (MOSFET) device includes a gate electrode and a source electrode formed on an initial insulation layer on a first surface of a semiconductor chip and a drain electrode formed on a second surface of the semiconductor chip. The source electrode includes a source metal, a source electrode bump formed on the source metal and a source electrode metal layer on top of the source electrode bump. A first insulation layer covers the gate electrode. A through via aligned to the gate electrode is formed from the second surface of the chip to expose a portion of the gate electrode from the second surface.
摘要:
A package structure for DC-DC converter disclosed herein can reduce the number of encapsulated elements as a low-side MOSFET chip can be stacked above the high-side MOSFET chip of a first die pad, through die pads of different thicknesses or interposers with joint parts of different thicknesses; moreover, it further reduces the size of the entire semiconductor package as a number of bond wires are contained in the space between the controller and the low-side MOSFET chip. Moreover, electrical connection between the top source electrode pin and the bottom source electrode pin of the low-side MOSFET chip is realized with a metal joint plate, such that when the DC-DC converter is sealed with plastic, the metal joint plate can be exposed outside to improve the thermal performance and effectively reduce the thickness of the semiconductor package.
摘要:
A package structure for DC-DC converter disclosed herein can reduce the number of encapsulated elements as a low-side MOSFET chip can be stacked above the high-side MOSFET chip of a first die pad, through die pads of different thicknesses or interposers with joint parts of different thicknesses; moreover, it further reduces the size of the entire semiconductor package as a number of bond wires are contained in the space between the controller and the low-side MOSFET chip. Moreover, electrical connection between the top source electrode pin and the bottom source electrode pin of the low-side MOSFET chip is realized with a metal joint plate, such that when the DC-DC converter is sealed with plastic, the metal joint plate can be exposed outside to improve the thermal performance and effectively reduce the thickness of the semiconductor package.
摘要:
A stacked power semiconductor device includes vertical metal oxide semiconductor field-effect transistors and dual lead frames packaged with flip-chip technology. In the method of manufacturing the stacked power semiconductor device, a first semiconductor chip is flip chip mounted on the first lead frame. A mounting clips is connected to the electrode at back side of the first semiconductor chip. A second semiconductor chip is mounted on the second lead frame, which is then flipped and stacked on the mounting clip.
摘要:
A stacked power semiconductor device includes vertical metal oxide semiconductor field-effect transistors and dual lead frames packaged with flip-chip technology. In the method of manufacturing the stacked power semiconductor device, a first semiconductor chip is flip chip mounted on the first lead frame. A mounting clips is connected to the electrode at back side of the first semiconductor chip. A second semiconductor chip is mounted on the second lead frame, which is then flipped and stacked on the mounting clip.
摘要:
A package structure for DC-DC converter disclosed herein can reduce the number of encapsulated elements as a low-side MOSFET chip can be stacked above the high-side MOSFET chip of a first die pad, through die pads of different thicknesses or interposers with joint parts of different thicknesses; moreover, it further reduces the size of the entire semiconductor package as a number of bond wires are contained in the space between the controller and the low-side MOSFET chip. Moreover, electrical connection between the top source electrode pin and the bottom source electrode pin of the low-side MOSFET chip is realized with a metal joint plate, such that when the DC-DC converter is sealed with plastic, the metal joint plate can be exposed outside to improve the thermal performance and effectively reduce the thickness of the semiconductor package.