摘要:
A system and method for semiconductor fabrication fault analysis. The storage device stores test records. The program module receives a study lot identity, acquires suspect fabrication issues corresponding to the study lot identity, acquires a number of comparative wafer lot identities processed by the same fabrication tool and fabrication recipe for each fabrication issue, defines the comparative wafer lot identities having the same failed cluster groups as similar failed lot identities, calculates a similarity score for each similar failed lot identity, calculates a causal score according to the similarity scores for each suspect fabrication issue, and arranges the suspect fabrication issues according to causal scores thereof.
摘要:
A system and method for semiconductor fabrication fault analysis. The storage device stores test records. The program module receives a study lot identity, acquires suspect fabrication issues corresponding to the study lot identity, acquires a number of comparative wafer lot identities processed by the same fabrication tool and fabrication recipe for each fabrication issue, defines the comparative wafer lot identities having the same failed cluster groups as similar failed lot identities, calculates a similarity score for each similar failed lot identity, calculates a causal score according to the similarity scores for each suspect fabrication issue, and arranges the suspect fabrication issues according to causal scores thereof.
摘要:
Techniques and mechanisms for improving full well capacity for pixel structures in an image sensor. In an embodiment, a first pixel structure of the image sensor includes an implant region, where a skew of the implant region corresponds to an implant angle, and a second pixel structure of the image sensor includes a transfer gate. In another embodiment, an offset of the implant region of the first pixel structure from the transfer gate of the second pixel structure corresponds to the implant angle.
摘要:
An apparatus includes a semiconductor layer having an array of pixels arranged therein. A passivation layer is disposed proximate to the semiconductor layer over the array of pixels. A segmented etch stop layer including a plurality of etch stop layer segments is disposed proximate to the passivation layer over the array of pixels. Boundaries between each one of the plurality of etch stop layer segments are aligned with boundaries between pixels in the array of pixels.
摘要:
A method of forming trenches in a semiconductor device includes forming an etchant barrier layer above a first portion of a semiconductor layer. A first trench is etched in a second portion of the semiconductor layer using a first etchant. The second portion of the semiconductor layer is not disposed underneath the etchant barrier layer. The etchant barrier layer is etched through using a second etchant that does not substantially etch the semiconductor layer. A second trench is etched in the first portion of the semiconductor layer using a third etchant. The third etchant also extends a depth of the first trench.
摘要:
A backside illuminated image sensor includes a semiconductor layer and a trench disposed in the semiconductor layer. The semiconductor layer has a frontside surface and a backside surface. The semiconductor layer includes a light sensing element of a pixel array disposed in a sensor array region of the semiconductor layer. The pixel array is positioned to receive external incoming light through the backside surface of the semiconductor layer. The semiconductor layer also includes a light emitting element disposed in a periphery circuit region of the semiconductor layer external to the sensor array region. The trench is disposed in the semiconductor layer between the light sensing element and the light emitting element. The trench is positioned to impede a light path between the light emitting element and the light sensing element when the light path is internal to the semiconductor layer.
摘要:
An apparatus includes a semiconductor layer, a dielectric layer, and a light prevention structure. The semiconductor layer has a front surface and a backside surface. The semiconductor layer includes a light sensing element and a periphery circuit region containing a light emitting element and not containing the light sensing element. The dielectric layer contacts at least a portion of the backside surface of the semiconductor layer. At least a portion of the light prevention structure is disposed between the light sensing element and the light emitting element. The light prevention structure is positioned to prevent light emitted by the light emitting element from reaching the light sensing element.
摘要:
An isolation area that provides additional active area between semiconductor devices on an integrated circuit is described. In one embodiment, the invention includes a complementary metal oxide semiconductor transistor of an image sensor having a source, a drain, and a gate between the source and the drain, the transistor having a channel to couple the source and the drain under the influence of the gate, and an isolation barrier surrounding a periphery of the source and the drain to isolate the source and the drain from other devices, wherein the isolation barrier is distanced from the central portion of the channel.
摘要:
A backside illuminated imaging sensor with a seal ring support includes an epitaxial layer having an imaging array formed in a front side of the epitaxial layer. A metal stack is coupled to the front side of the epitaxial layer, wherein the metal stack includes a seal ring formed in an edge region of the imaging sensor. An opening is included that extends from the back side of the epitaxial layer to a metal pad of the seal ring to expose the metal pad. The seal ring support is disposed on the metal pad and within the opening to structurally support the seal ring.
摘要:
Forming a doped isolation region in a substrate during manufacture of an image sensor. A method of an aspect includes forming a hardmask layer over the substrate, and forming a photoresist layer over the hardmask layer. An opening is formed in the photoresist layer over an intended location of the doped isolation region. An opening is etched in the hardmask layer by exposing the hardmask layer to one or more etchants through the opening. The opening in the hardmask layer may have a width of less than 0.4 micrometers. The doped isolation region may be formed in the substrate beneath the opening in the hardmask layer by performing a dopant implantation that introduces dopant through the opening in the hardmask layer. The method of an aspect may include forming sidewall spacers on sidewalls of the opening in the hardmask layer and using the sidewall spacers as a dopant implantation mask.