1412 results about "Pixel array" patented technology

Various structures for a hybrid pixel array are disclosed. The hybrid pixel array includes a combination of square photodiode (PD) pixel structures and split PD pixel structures. Square PD pixel structures include one photodiode per pixel unit while split PD pixel structures include two photodiodes per pixel unit. In certain instances, square PD pixel structures are used for green light pixels and split PD pixel structures are used for blue and red light pixels in the hybrid pixel array. The combination of square PD pixel structures and split PD pixel structures provides autofocus capability with higher signal strengths. Various techniques for row addressing and readout from the hybrid pixel array are also disclosed.

A light detection apparatus according to an embodiment of the present disclosure includes a semiconductor substrate, a light receiver, a trench, a multiplier that is a first electrically-conductive type, and a contactor. The semiconductor substrate has a first surface and a second surface facing each other, and has a pixel array in which a plurality of pixels is disposed into an array shape in an in-plane direction. The light receiver is provided inside the semiconductor substrate for each of the pixels, and generates, through photoelectric conversion, carriers in accordance with an amount of light received. The trench is provided, for each of the pixels, to the first surface of the semiconductor substrate. The multiplier that is the first electrically-conductive type is provided to a bottom surface of the trench, and allows the carriers generated in the light receiver to undergo avalanche multiplication. The contactor includes an electrically-conductive material buried in the trench, and is in contact with the multiplier.

The invention provides a Mini led display screen dead pixel detection and positioning method, device and system based on deep learning, and the method comprises the steps: applying a preset driving signal sequence to a pixel array of a Mini led display screen line by line, obtaining the brightness feedback data of each pixel in different driving stages, obtaining a brightness response sequence, and carrying out the detection and positioning of the dead pixel of the Mini led display screen. Carrying out spatial recombination processing on the brightness response sequence according to a physical arrangement structure of the pixel array to generate a brightness response matrix, carrying out local region feature difference analysis on the brightness response matrix, identifying a brightness response abnormal region, generating a candidate dead pixel position set, and obtaining a candidate dead pixel position set; and calling a pre-trained dead pixel recognition network to carry out feature learning processing on the candidate dead pixel position set, outputting a dead pixel probability corresponding to each candidate dead pixel position, screening the candidate dead pixel position set based on the candidate dead pixel probability, removing candidate positions with the dead pixel probability lower than a preset condition, and generating a dead pixel positioning result set. According to the invention, the accuracy and reliability of detecting and positioning the defective pixels of the Mini LED display screen can be effectively improved.

The invention provides a display panel and a display device, and belongs to the technical field of display driving. The display panel comprises a gate drive unit and a frequency division unit, a display area of the display panel comprises a pixel array composed of a plurality of pixel circuits arranged in an array mode, the gate drive unit comprises a plurality of cascaded gate drive circuits, and each gate drive circuit is connected with one row of pixel circuits. The frequency division unit comprises a plurality of frequency division circuits, and the pixel circuit is used for refreshing and displaying according to a driving signal output by the gate driving circuit. And at least one frequency dividing circuit is arranged between each gate driving circuit and the pixel circuit. The frequency division unit is used for controlling the pixel circuits in partial areas of the display area to input driving signals through the frequency division circuits during the display period of one frame of image, and the pixel circuits in other areas do not input the driving signals, so that the pixel circuits in different areas in the display area carry out display at different refresh rates. Therefore, balance of the refresh rate and the power consumption of the display panel can be realized.

The invention relates to the technical field of optical detection, and discloses an object surface three-dimensional topography measurement method based on optical interference, which comprises the following steps: acquiring a mixed time domain interference signal sequence in an axial scanning process; extracting seed pixels and constructing a spatial topology connectivity feature matrix; introducing fractional Fourier transform, and constructing a joint decoupling objective function containing a frequency domain nonlinear phase distortion evaluation index and a time domain physical invariant evaluation index; executing multi-stage optimization for the seed pixels, and locking a global optimal rotation angle; array self-adaptive decoupling is executed in combination with the spatial topology connectivity feature matrix, and an optimal rotation angle matrix is generated; and performing signal decoupling and reconstruction on the mixed signal, and extracting the absolute surface height of each pixel point to generate three-dimensional shape data. According to the invention, through multi-dimensional joint decoupling and spatial prior constraint, the problem of phase decoupling caused by film interference aliasing is solved, and the calculation overhead of a large-pixel array is reduced while the measurement precision is improved.

The invention provides an ultrasonic fingerprint pixel array circuit and an ultrasonic fingerprint data processing method. Based on the ultrasonic fingerprint pixel array circuit, a corresponding fingerprint pixel unit can be determined in a first position area of the ultrasonic fingerprint pixel array circuit and transformed into a first detection unit capable of locally generating an integral clock signal; meanwhile, a corresponding fingerprint pixel unit determined in a second position area of the ultrasonic fingerprint pixel array circuit is transformed into a second detection unit which can be matched with the first detection unit to carry out self-adaptive feedback adjustment on the generated integral clock signal. Therefore, the improved ultrasonic fingerprint pixel array circuit capable of automatically generating the integral clock signal matched with the ultrasonic fingerprint echo signal can be constructed by fully utilizing the original circuit structure of the ultrasonic fingerprint pixel array circuit at relatively low cost. Therefore, the ultrasonic fingerprint pixel array circuit can be utilized to efficiently and locally generate an integral clock signal with a better effect to process an ultrasonic fingerprint echo signal.

The invention relates to the technical field of industrial early warning, in particular to a canned container leakage point early warning device, a canned container leakage point early warning control method and a canned container leakage point early warning control device. The technical problem of how to acquire a thermal image in a non-contact manner, accurately determine the boundary of a thermal anomaly region and further analyze an anomaly reason in the prior art is solved. Comprising an infrared thermal imaging unit and a controller, the controller is in communication connection with the infrared thermal imaging unit and is configured to analyze a pixel array to identify a plurality of interconnected abnormal pixels, and the plurality of abnormal pixels jointly form an abnormal thermal feature with a determined boundary; classifying the anomalous thermal feature as a potential leakage point or a transient disturbance event based on one or more morphological characteristics derived from determining the boundary; an alarm signal is generated when the anomalous thermal feature is classified as a potential leakage point.

A display device includes a pixel array in which a plurality of data lines, a plurality of gate lines, and a plurality of pixel circuits are arranged; a data driver configured to output a data voltage to the plurality of data lines; a gate driver configured to sequentially output gate signals to the plurality of gate lines; a common line configured to simultaneously apply a common gate signal to the plurality of gate lines; and a timing controller configured to generate the common gate signal.

Provided is a display device including a pixel array including a plurality of pixels arranged in a matrix. Each pixel includes a pulse width modulation (PWM) circuit and an emission device; a data driver configured to provide pixel data to pixels arranged in a row of the pixel array; and a row driver configured to generate control signals and clock signals for driving the pixel array. The PWM circuit is configured to generate the PWM signal based on the control signals and the clock signals, the PWM signal including a plurality of bit fields respectively corresponding to a plurality of bits of the pixel data. The PWM circuit is further configured to, in a PWM period in which the PWM signal is output, distribute a first bit field of the PWM signal corresponding to a most significant bit (MSB) of the pixel data, among the plurality of bit fields.

The invention relates to an Imaging sensor device in a stacked arrangement comprising:a pixel array tier comprising a plurality of pixel segments each having a plurality of pixels for photon detection each providing a digital pixel output;a processing tier comprising a number of processing cores each associated with one of the plurality of pixel segments to receive the pixel outputs of the pixels of the respective pixel segment, wherein the processing cores are each in bidirectional communication with one or more neighboring processing cores,wherein the processing cores are each configured to receive pixel outputs of the pixels of the associated pixel segments and to distribute processing of pixel outputs between the processing core and the at least one of the neighboring processing cores as neighboring processing cores.

To provide an imaging apparatus which enables sophisticated calculations to be realized at lower power. An imaging apparatus according to an embodiment of the present disclosure includes: a first substrate group in which is arranged a light source cell array portion configured to generate a light signal; and a second substrate group in which is arranged a pixel array portion configured to photoelectrically convert the light signal and output a pixel signal representing a result of a sum-of-product computation. The first substrate group and the second substrate group are stacked so that at least a part of the light source cell array portion overlaps with the pixel array portion.

A pixel array includes: unit pixel groups; and two column lines provided for each column. Each of the unit pixel groups includes rows, a first pixel group comprising a plurality of pixels, a second pixel group comprising a plurality of pixels. The first pixel group and the second pixel group are arranged in a row direction. A pixel signal is output by simultaneously reading out: unit pixel groups that are connected to a first column line and that do not share a first floating diffusion region, and unit pixel groups that are connected to a second column line different from the first column line and that do not share a second floating diffusion region. At least one of the first floating diffusion region and the second floating diffusion region is between a dual conversion transistor and a reset transistor.

The invention relates to a data compression circuit and method suitable for a single photon avalanche diode array, and the circuit comprises a pixel array which is provided with M rows and N columns of pixels; the multi-stage compression circuit comprises a plurality of compression cache circuits connected in sequence, each stage of compression cache circuit comprises a plurality of first storage areas used for storing TDC data and address bits used for storing the positions of pixels corresponding to the TDC data in the pixel array, and the multi-stage compression circuit reads the TDC data of the pixel array line by line. And after multi-stage compression, the signals are output to a post-stage circuit. Compared with the prior art, the pixel data in a digital form is greatly compressed, the data transmission quantity is reduced, the data transmission bottleneck problem of a large-scale array is solved, and a key technical support is provided for a high-performance single-photon detection system.

The invention relates to the technical field of liquid crystal display, and discloses a liquid crystal module character display method, which comprises the following steps of: performing stroke decomposition and topological relation establishment on Chinese characters in a target character set to generate a character stroke data set; performing two-dimensional character topological mapping and compressed encoding on the to-be-displayed characters to form compressed character description data; executing hierarchical rendering and stroke synthesis in a character reconstruction engine to generate a target character dot matrix; pixel array electric field distribution optimization is carried out, and sub-pixel-level precision character edge display data are obtained by controlling the driving voltage gradient; performing electric field compensation based on the character edge display data with sub-pixel-level precision to form character display data with enhanced edge sharpness; stroke self-adaptive anti-aliasing processing is carried out on the character display data with enhanced edge sharpness, clear Chinese character display data is output, the visual smoothness of character edges in a small-size display environment is optimized, and the overall recognition degree of characters is improved.

An image sensor may include an array of imaging pixels arranged in rows and columns. A method of operating an imaging pixel is provided that includes accumulating charge in a photosensitive element, allowing the accumulated charge in the photodiode to overflow into a capacitor that is coupled to a reset transistor having a gate terminal configured to receive a reset control signal during an integration phase, and extending the dynamic range of the imaging pixel by dynamically adjusting the reset control signal from a first voltage level to a second voltage level during the integration phase. The reset control signal can be lowered from the first voltage level to the second voltage level in a discrete or continuous fashion such that a portion of the overflow charge in the capacitor represents a linear signal and a portion of the overflow charge in the capacitor represents a non-linear signal.

The invention relates to a receiver for a laser radar, the laser radar and terminal equipment. The receiver comprises an SPAD chip, the SPAD chip comprises a pixel array, the pixel array extends along a first direction and a second direction, the pixel array comprises a first pixel array, the first pixel array comprises first pixels and is configured to receive echoes, reflected by an object, of detection light of the laser radar and output echo signals; and a second pixel array including second pixels and configured to receive visible light and output an image signal; wherein the first pixel and the second pixel are aligned in the second direction, the pixel array further comprises a dummy pixel, and the dummy pixel is located between the first pixel and the second pixel in the first direction.

The invention belongs to the technical field of semiconductor display, and particularly relates to a pixel array intelligent control system of a MicroLED display. The system comprises a pixel sensing array, a dynamic compensation engine, a self-adaptive driving scheduling module, an environment coupling feedback module and a central cooperative control unit, and realizes single-pixel-level brightness and chrominance correction, power consumption suppression and fault redundancy mapping by collecting pixel-level and environment multi-dimensional data in real time, dynamically generating a compensation coefficient and optimizing driving parameters. And the display uniformity, the color fidelity and the system reliability are obviously improved.

An electronic device may have a display mounted in a housing. The display may have a display panel with an array of pixels on a flexible substrate. A display cover layer may overlap the display panel. The flexible substrate may have a protruding portion that forms a tail. When the display is mounted in the housing, the tail may be bent back on itself to create a bend. The bend may be embedded in molded polymer. The device may have structures that help prevent the display cover layer from being compressed inwardly towards the rear of the housing such as frame structures embedded in the molded polymer and / or housing sidewall structures. Optical components and optical waveguides may be embedded within the molded polymer. Mating chamfers on the display cover layer and housing may help seat the display cover layer in the housing.

The present invention relates to an improved system and method for imaging, based on single photon detectors (SPDs), whereby false positives are suppressed.

Provided are a vision sensor and an image processing device including the vision sensor. The vision sensor includes a pixel array including a plurality of pixels each including a photoelectric conversion device, which is configured to generate an optical current, a read-out circuit configured to generate intensity image data based on a magnitude of a voltage converted from the optical current, and a data output logic configured to generate event data based on a variation amount in the voltage converted from the optical current.

The invention relates to the technical field of photoelectric sensing and integrated circuits, and particularly provides a reconfigurable convolution weight loading and reading system of a sensing and computing integrated visual chip, which comprises a reconfigurable convolution weight loading system, a sensing and computing integrated pixel array, a column merging reading system and a time sequence control module, the reconfigurable convolution weight loading system is used for configuring a multi-scale convolution kernel, converting a digital weight into an analog voltage signal, and loading the analog voltage signal to the sensing and computing integrated pixel array by adopting a reconfigurable convolution weight loading mechanism based on a 13 * 13 weight loading array; the sensing and computing integrated pixel array is used for carrying out pixel-level visual information sensing and parallel convolution calculation on the analog voltage signals, the column merging reading system is used for reading a parallel convolution calculation result of the sensing and computing integrated pixel array, and the time sequence control module is used for providing time sequence control signals. According to the method and the device, multi-scale convolution kernel configuration is realized, convolution results of different convolution kernel sizes and step lengths are read, and diversified visual processing requirements are met.

The present disclosure aims to provide a photoelectric conversion device capable of suppressing an increase in power consumption of a SPAD pixel. For example, a photoelectric conversion device may include an avalanche photodiode including an anode and a cathode in each pixel of a pixel array. The device may include a recharger configured to recharge the anode or the cathode once per unit exposure time, a gating circuit configured to generate a pulse signal based on an output of the avalanche photodiode at a plurality of different timings within the unit exposure time, and a counter configured to count the pulse signal from the gating circuit.

A distance measuring device that outputs one or more distance information items each indicating a distance to a subject, the distance measuring device includes: a light source that emits illumination light including one or more bright portions; a light receiver that includes a pixel array in which pixels are arranged in a matrix; a distance information calculator that calculates, for each of the pixels, pixel distance information indicating a distance from the pixel to the subject when the light receiver receives reflected light that is the illumination light reflected off the subject; a distance information selector that selects one or more selective distance information items from among the pixel distance information items corresponding to the pixels; and an outputter that outputs the one or more distance information items, based on the one or more selective distance information items.

A stream of events from an event-based sensor is processed for trajectory determination. Each event comprises a pixel position in a pixel array of the event-based sensor, and a time stamp. A grid of cells is defined for the pixel array, with each cell comprising a plurality of pixels. In the trajectory determination, incoming events are mapped to the grid of cells during a first time period, and summary data with a representative position for the pixel positions that fall within the respective cell during a first time period is generated. An intra-cell evaluation of the summary data generated for a second time period is performed to generate a cell trajectory of representative positions within the respective cell. An inter-cell evaluation of a plurality of cell trajectories generated for a plurality of cells for the second time period is performed to generate a grid trajectory.

An image sensor includes a pixel array in which a plurality of pixels are arranged, wherein each of the pixels includes a photodiode, a transfer transistor, first to third floating diffusion nodes, a first capacitor, a second capacitor, a third capacitor, a first switch transistor, a second switch transistor, and a reset transistor. The second switch transistor is configured to turn off in a first period and to turn on in a second period of an exposure period of the photodiode, and the reset transistor is configured to turn on in the first period and to turn off in the second period of the exposure period of the photodiode.

A system for generating a voltage at a pixel array includes a plurality of display pixels forming the pixel array, each display pixel comprising a pixel circuit for driving the pixel. The system further comprises a row formatter configured to store a plurality of bits representing image data for a row of display pixels of the LCOS array; a row controller configured to write a subset of the plurality of bits representing image data for a pixel of the row into a plurality of data latches of said pixel circuit; and a waveform generator for generating reference pulses represented by a set of reference bits. The pixel circuit is configured to compare each reference bit to corresponding bits stored in the latches of each pixel circuit, and generate voltage at an electrode of each pixel based on this comparison.

The application provides an image sensor and a reading control method thereof. The image sensor comprises a pixel array and a row selection control line. The pixel array comprises a plurality of pixel units arranged in a Bayer array. Part of the pixel units in the pixel array are arranged as a pair of focus photosensitive pixel units. The output value of the focus photosensitive pixel unit in the pair of focus photosensitive pixel units is used for focus control. The row selection control line receives a control signal and controls the selection of the pixel units in the row to be read for reading out the pixel signal. The row selection control line comprises a first group of row selection control lines and a second group of row selection control lines. The pixel array comprises a focus pixel row. The first group of row selection control lines is used for controlling the non-focus photosensitive pixel units in the focus pixel row to read out the pixel signal. The second group of row selection control lines is used for controlling the pair of focus photosensitive pixel units in the focus pixel row to read out the pixel signal. The application improves the phase focus performance and also improves the frame rate of pixel processing.

A CMOS image sensor includes a unit pixel array including a photodiode array, a color filter array, a micro-lens array, and a grid isolation structure laterally separating adjacent color filters. The grid isolation structure includes a first low-n grid, a second low-n grid underlying the first low-n grid, and a metal grid within the second low-n grid, the first low-n grid being narrower than the second low-n grid. The color filter array includes color filter matrixes, all color filter matrixes have the same arrangement pattern. Sizes of color filters in each color filter matrix vary depending on locations of the color filters in the color filter matrix. In an edge portion, a distance between a center of a color filter matrix and a center of a corresponding unit pixel matrix in plan view varies depending on a location of the unit pixel matrix in the CMOS image sensor.

The HMD comprises a head-mountable frame and an optical projection assembly supported by the frame. The optical projection assembly comprises a microdisplay supported by the frame. The microdisplay has a two-dimensional array of pixels. Each pixel contains a group of emitters configured to emit image light. The microdisplay further comprises a projection optical system configured to receive image light from each group of emitters in the array of pixels at the entrance pupil and project the focused image light from the exit pupil. The microdisplay further comprises a two-dimensional array of optical collimators positioned between the microdisplay and the projection optical system. The steerable optical collimators are further configured to redirect the emission profiles of the corresponding groups of emitters toward the center of the entrance pupil of the projection optical system.

The invention relates to OLED micro-display, in particular to a silicon-based OLED micro-display device based on a magnetic random access memory and a driving method of the silicon-based OLED micro-display device based on the magnetic random access memory. The CMOS driving circuit receives the instruction and the frame data sent by the main controller, transmits the instruction and the frame data to the metal interconnection layer, and reads the stored frame data from the metal interconnection layer to drive the OLED light-emitting layer; the metal interconnection layer judges that the CMOS driving circuit reads the stored frame data or directly uses the frame data sent by the main controller to carry out display driving according to the system state, and carries out MRAM frame caching on the frame data sent by the main controller; the OLED light-emitting layer is attached to the surface of the metal interconnection layer, adopts a pixel array structure, and emits light under the action of the CMOS driving circuit to realize picture display; according to the technical scheme provided by the invention, the defects of low starting speed, high power consumption and complex system structure in the prior art can be effectively overcome.