Abstract:
A depth sensor includes a substrate that includes a first face and a second face opposite to each other in a first direction; a photoelectric conversion element disposed in the substrate; and first and second taps connected to the photoelectric conversion element. Each of the first and second taps includes: a floating diffusion area disposed in the substrate; a transfer transistor connected to the floating diffusion area; a photo transistor connected to the photoelectric conversion element; a tap transfer transistor connected to the photo transistor; and a storage transistor connected to the tap transfer transistor and the transfer transistor. The storage transistor includes a storage gate electrode. The storage gate electrode includes a first extension and a second extension that extend from the first face of the substrate toward the second face, and the first extension and the second extension are spaced apart from each other in a second direction.
Abstract:
A global shutter image sensor according to an exemplary embodiment of the present inventive concepts includes a semiconductor substrate including a first surface and a second surface, a photo-electric conversion region formed in the semiconductor substrate, a storage diode formed in a vicinity of the photo-electric conversion region in the semiconductor substrate, a drain region formed above the photo-electric conversion region in the semiconductor substrate, a floating diffusion region formed above the storage diode in the semiconductor substrate, an overflow gate transferring first charges from the photo-electric conversion region to the drain region, a storage gate transferring second charges from the photo-electric conversion region to the storage diode, and a transfer gate transferring the second charges from the storage diode to the floating diffusion region. The overflow gate, the photo-electric conversion region, the storage gate, the storage diode, the transfer gate, and the floating diffusion region are formed in a row.
Abstract:
Image sensors are provided. An image sensor includes a substrate that includes a pixel region, a first surface, and a second surface that is opposite the first surface. The image sensor includes first and second photogates that are on the first surface and are configured to generate electric charge responsive to incident light in the pixel region. Moreover, the image sensor includes first and second lenses that are on the second surface and are configured to pass the incident light toward the first and second photogates.
Abstract:
In one embodiment, an image sensor includes unit pixels, each of the unit pixel including a first sub-pixel and a second sub-pixel adjacent to the first sub-pixel in a plan view of the image sensor; and a lens array including a first sub-lens area on the first sub-pixel of each unit pixel and a second sub-lens area on the second sub-pixel of each unit pixel. The first sub-lens area may include a first micro lens, and the second sub-lens area includes a second micro lens. In addition, the first micro lens may include a depression defined in a central area thereof.
Abstract:
An image sensor includes a plurality of pixels, at least one of the pixels comprising: a photodiode configured to generate charges in response to light; and a pixel circuit disposed on the substrate, and including a storage transistor configured to store the charges generated by the photodiode, and a transfer transistor connected between the storage transistor and a floating diffusion node, wherein a potential of a boundary region between the storage transistor and the transfer transistor has a first potential when the transfer transistor is in a turned-off state, and has a second potential, lower than the first potential, when the transfer transistor is in a turned-on state.