摘要:
A MRAM cell structure includes a bottom electrode; a magnetic tunnel junction unit disposed on the bottom electrode; a top electrode disposed on the magnetic tunnel junction unit; and a blocking layer disposed on the top electrode, wherein the blocking layer is wider than the magnetic tunnel junction unit for preventing against formation of a short circuit between a contact and the magnetic tunnel junction unit.
摘要:
A MRAM cell structure includes a bottom electrode; a magnetic tunnel junction unit disposed on the bottom electrode; a top electrode disposed on the magnetic tunnel junction unit; and a blocking layer disposed on the top electrode, wherein the blocking layer is wider than the magnetic tunnel junction unit for preventing against formation of a short circuit between a contact and the magnetic tunnel junction unit.
摘要:
The present disclosure provides an image sensor semiconductor device. A semiconductor substrate having a first-type conductivity is provided. A plurality of sensor elements is formed in the semiconductor substrate. An isolation feature is formed between the plurality of sensor elements. An ion implantation process is performed to form a doped region having the first-type conductivity substantially underlying the isolation feature using at least two different implant energy.
摘要:
A new method to form MOS gates in an integrated circuit device is achieved. The method is particularly useful for forming floating gates in split gate flash transistors. The method comprises providing a substrate. A dielectric layer is formed overlying the substrate. A conductor layer is formed overlying the dielectric layer. A first masking layer is deposited overlying the conductor layer. The first masking layer is patterned to selectively expose the conductor layer. A second masking layer is deposited overlying the first masking layer and the conductor layer. The second masking layer is etched back to form spacers on sidewalls of the first masking layer. The conductor layer is etched through where exposed by the first masking layer and the spacers to thereby form MOS gates in the manufacture of the integrated circuit device.
摘要:
A method for fabricating a back-side illuminated image sensor includes providing a semiconductor substrate having a front surface and back surface, providing a plurality of transistors, metal interconnects, and metal pads on front surface of the substrate, bonding a supporting layer to the front surface of the substrate, thinning-down the semiconductor substrate from the back surface, clearing-out a region of the semiconductor substrate from the back surface that covers a fine alignment mark by performing registration from the back surface and using a global alignment mark as a reference, and processing the back surface of the substrate by performing registration from the back surface and using the fine alignment mark as a reference.
摘要:
A method for forming a semiconductor structure includes providing a substrate; forming a gate stack of a flash memory cell, wherein a top portion of the gate stack comprises a capping layer; forming a gate having at least a portion over the capping layer; and reducing a thickness of the portion of the gate over the capping layer. The topography height difference between the flash memory cell and MOS devices on the same chip is reduced.
摘要:
A method for planarizing a semiconductor device includes providing a substrate having at least one opening therein, each opening defining a lower portion and an upper portion; coating a light sensitive material layer over the substrate, the light sensitive material layer covering the lower and upper portions of the at least one opening; etching back the light sensitive material layer to expose the upper portion of the at least one opening; repeating the steps of coating and etching to remove a predetermined amount below the upper portion of the at least one opening; depositing an insulating layer over the substrate; and planarizing the insulating layer until the upper portion of the at least one opening is exposed.
摘要:
Provided is a method of fabricating a semiconductor device. The method includes providing a device substrate having a front side and a back side, the device substrate having a first refractive index, forming an embedded target over the front side of the device substrate, forming a reflective layer over the embedded target, forming a media layer over the back side of the device substrate, the media layer having a second refractive index less than the first refractive index, and projecting radiation through the media layer and the device substrate from the back side so that the embedded target is detected for a semiconductor process.
摘要:
A method for fabricating a backside illuminated image sensor is provided. An exemplary method can include providing a substrate with a front surface and a back surface; forming a first alignment mark for global alignment on the front surface of the substrate; forming a second alignment mark for fine alignment in a clear-out region on the front surface of the substrate; aligning the substrate from the back surface using the first alignment mark; and removing a portion of the back surface of the substrate at the clear-out region for locating the second alignment mark.
摘要:
The present disclosure provides an image sensor semiconductor device. A semiconductor substrate having a first-type conductivity is provided. A plurality of sensor elements is formed in the semiconductor substrate. An isolation feature is formed between the plurality of sensor elements. An ion implantation process is performed to form a doped region having the first-type conductivity substantially underlying the isolation feature using at least two different implant energy.