摘要:
The structures of reflective shields and methods of making such structures described enable reflection of light that has not be absorbed by photodiodes in image sensor devices and increase quantum efficiency of the photodiodes. Such structures can be applied (or used) for any image sensors to improve image quality. Such structures are particular useful for image sensors with smaller pixel sizes and for long-wavelength light (or rays), whose absorption length (or depth) could be insufficient, especially for backside illumination (BSI) devices. The reflective shields could double, or more than double, the absorption depth for light passing through the image sensors and getting reflected back to the photodiodes. Concave-shaped reflective shields have the additional advantage of directing reflected light toward the image sensors.
摘要:
A system of process control is provided. The system comprises a first processing tool, a first sensor, a second processing tool, and a processor. The first processing tool processes a first workpiece. The first sensor provides real-time monitoring (RTM) data of the first processing tool while processing the first workpiece. The second processing tool processes the first workpiece subsequent to the first processing tool. The processor adjusts, according to the real-time monitoring data and a preset program, the first processing tool for processing a second workpiece, and the second processing tool for processing the first workpiece.
摘要:
A bonding pad structure includes a substrate and a first conductive island formed in a first dielectric layer and disposed over the substrate. A first via array having a plurality of vias is formed in a second dielectric layer and disposed over the first conductive island. A second conductive island is formed in a third dielectric layer and disposed over the first via array. A bonding pad is disposed over the second conductive island. The first conductive island, the first via array, and the second conductive island are electrically connected to the bonding pad. The first via array is connected to no other conductive island in the first dielectric layer except the first conductive island. No other conductive island in the third dielectric layer is connected to the first via array except the second conductive island.
摘要:
Embodiments of the invention relate to dual shallow trench isolations (STI). In various embodiments related to CMOS Image Sensor (CIS) technologies, the dual STI refers to one STI structure in the pixel region and another STI structure in the periphery or logic region. The depth of each STI structure depends on the need and/or isolation tolerance of devices in each region. In an embodiment, the pixel region uses NMOS devices and the STI in this region is shallower than that of in the periphery region that includes both NMOS and PMOS device having different P- and N-wells and that desire more protective isolation (i.e., deeper STI). Depending on implementations, different numbers of masks (e.g., two, three) are used to generate the dual STI, and are disclosed in various method embodiments.
摘要:
Embodiments of the invention relate to dual shallow trench isolations (STI). In various embodiments related to CMOS Image Sensor (CIS) technologies, the dual STI refers to one STI structure in the pixel region and another STI structure in the periphery or logic region. The depth of each STI structure depends on the need and/or isolation tolerance of devices in each region. In an embodiment, the pixel region uses NMOS devices and the STI in this region is shallower than that of in the periphery region that includes both NMOS and PMOS device having different P- and N-wells and that desire more protective isolation (i.e., deeper STI). Depending on implementations, different numbers of masks (e.g., two, three) are used to generate the dual STI, and are disclosed in various method embodiments.
摘要:
A bonding pad structure includes a substrate and a first conductive island formed in a first dielectric layer and disposed over the substrate. A first via array having a plurality of vias is formed in a second dielectric layer and disposed over the first conductive island. A second conductive island is formed in a third dielectric layer and disposed over the first via array. A bonding pad is disposed over the second conductive island. The first conductive island, the first via array, and the second conductive island are electrically connected to the bonding pad. The first via array is connected to no other conductive island in the first dielectric layer except the first conductive island. No other conductive island in the third dielectric layer is connected to the first via array except the second conductive island.
摘要:
A backside illuminated CMOS image sensor comprises a photo active region formed over a substrate using a front side ion implantation process and an extended photo active region formed adjacent to the photo active region, wherein the extended photo active region is formed by using a backside ion implantation process. The backside illuminated CMOS image sensor may further comprise a laser annealed layer on the backside of the substrate. The extended photo active region helps to increase the number of photons converted into electrons so as to improve quantum efficiency.
摘要:
The structures of reflective shields and methods of making such structures described enable reflection of light that has not be absorbed by photodiodes in image sensor devices and increase quantum efficiency of the photodiodes. Such structures can be applied (or used) for any image sensors to improve image quality. Such structures are particular useful for image sensors with smaller pixel sizes and for long-wavelength light (or rays), whose absorption length (or depth) could be insufficient, especially for backside illumination (BSI) devices. The reflective shields could double, or more than double, the absorption depth for light passing through the image sensors and getting reflected back to the photodiodes. Concave-shaped reflective shields have the additional advantage of directing reflected light toward the image sensors.
摘要:
A system of process control is provided. The system comprises a first processing tool, a first sensor, a second processing tool, and a processor. The first processing tool processes a first workpiece. The first sensor provides real-time monitoring (RTM) data of the first processing tool while processing the first workpiece. The second processing tool processes the first workpiece subsequent to the first processing tool. The processor adjusts, according to the real-time monitoring data and a preset program, the first processing tool for processing a second workpiece, and the second processing tool for processing the first workpiece.
摘要:
A backside illuminated CMOS image sensor comprises a photo active region formed over a substrate using a front side ion implantation process and an extended photo active region formed adjacent to the photo active region, wherein the extended photo active region is formed by using a backside ion implantation process. The backside illuminated CMOS image sensor may further comprise a laser annealed layer on the backside of the substrate. The extended photo active region helps to increase the number of photons converted into electrons so as to improve quantum efficiency.