69results about How to "Increase pixel resolution" patented technology

The invention belongs to the technical field of electronic technologies and photoelectronic imaging technologies, in particular relates to a single-photon avalanche diode and a three-dimensional CMOS (Complementary Metal Oxide Semiconductor) image sensor based on the diode. The single-photon avalanche diode of the invention improves the traditional rectangular photosensitive PN junction into a regular octagon and can conveniently and simply weaken edge breakdown and improve gain uniformity. A two-dimensional pixel array of the three-dimensional CMOS image sensor based on the diode comprises unit pixels of the regular octagon-shaped single-photon avalanche diode and is arrayed in a honeycomb-shape, thereby being convenient for interpolation and improving resolution in horizontal and vertical direction.

The invention relates to an expressway vehicle detection method based on improved visual background extraction, which comprises the steps of 1, initializing a read-in image, wherein an input color image is converted into a grayscale image; 2, carrying out background molding on the image, carrying out background initialization if the image is a first frame image, and otherwise, carrying out background updating so as segment out the background; 3, segmenting out a road surface from the foreground; 4, carrying out eight-neighborhood filling on the image; 5, removing a lane line by using a characteristic that the lane line is narrow; 6, filling the internal part of a vehicle by using a longitudinal filing method; and 7, extracting a vehicle area and drawing an external rectangular frame of the vehicle area. According to the invention, vehicles on the expressway in aerial video of an unmanned aerial vehicle are detected by adopting a mode of image processing, the cost is low, the detection precision is high, the real-time performance is good, and the application range is wide.

A method for forming a field emission cathode device is disclosed using a peelable photoresist with standard photolithography processes for patterning a deposition mask, except that the peelable photoresist can be peeled away in dry form. The method offers standard photoresist accuracy with the advantage of high patterning resolution for producing carbon nanotube (CNT) field emitter displays. Example methods using a single peelable photoresist layer, and using two distinct layers of photoresist and peelable film, are presented. Since the method does not require wet processes after CNT deposition, it ensures enhanced CNT emitter performance. In addition, an activation process that liberates CNTs can be performed just before a tape lamination and peeling process step. In this manner, all superfluous nanoparticle material remains confined between the tape and photoresist films, which are removed together and properly discarded.

The invention discloses a double-side display device. Two organic light-emitting diodes with opposite light-emitting surfaces are arranged in an identical pixel unit, so that a double-side display effect is achieved under the situation of ensuring high pixel resolution and high resolution. The invention also discloses a manufacturing method of the double-side display device. Double-side display can be realized by manufacturing two organic light-emitting diodes with opposite light emitting surfaces in the identical pixel unit. A manufacturing process is simple; a high resolution can be realized; the manufacturing cost of the double-side display device is lowered effectively; and the display quality of the double-side display device is improved.

The invention provides a display signal input device, a display signal input method, and a display system including the display signal input device. The display signal input device includes: a plurality of sub-image receiving modules, each of which is used for receiving one sub-image and outputting the received sub-image, wherein the plurality of sub-images can be arranged into an original image according to a predetermined sequence; and an image stitching module for synthesizing the display signals corresponding to the respective sub-images and outputting the synthesized display signals in groups.

The invention discloses a maskless photo-etching system based on nanometer lenses, which is used to increase exposure pixel resolution of maskless photo-etching. The maskless photo-etching system comprises a movable platform, an optical imaging system and a focusing array, wherein a to-be-exposed element is placed on the movable platform, the optical imaging system provides a patterning beam array needed for exposing the element, and the focusing array is formed by nanometer lenses, wherein every nanometer lens correspondingly focuses on every beam projected to the element in the patterning beam array. The nanometer lenses can have pixel resolution which is superior to that of the traditional zone plate, and even can break through the diffraction limitation of 1/2 wavelength of an optical lens. Further, the work distance of the nanometer lens can range from 1micron to 100 microns.

The invention discloses a light-emitting pixel arrangement structure, a pixel multiplexing control method and electronic equipment. Relates to the technical field of display, in particular to a pixel multiplexing control technology. The problem that an existing pixel arrangement and control method is prone to causing deformation of a display image is solved. For an interlaced same-primary-color light-emitting pixel arrangement structure, a triangular structure formed by three different-primary-color pixels is used as a display unit, and all the display units form a matrix display structure; according to the control method, virtual display of a frame of picture is completed through four times of progressive scanning or two times of progressive scanning or pre-calculation and one time of scanning. The method is suitable for control of any existing display structure with a plurality of point or block light sources as light-emitting pixels, and is especially suitable for control of display structures with LEDs as light-emitting pixels. The definition is improved, deformation of the display image is avoided, edge color lines cannot appear when the display screen is cut, the pixel resolution is high, and the image edge fusion degree is improved.

The invention discloses a preparation method of a cathode isolation column of an organic light emitting display (OLED). The preparation method comprises the following steps: firstly, preparing a coining mold, and obtaining a predesigned convex structural pattern on the mold; uniformly applying a layer of ultraviolet solidification glue on an ITO substrate, and allowing the ultraviolet solidification glue to freely flow to be flat and form a coining layer; pressing the mold in the coining layer, filling the convex structural pattern of the mold with the ultraviolet solidification glue, and through exposure, enabling the ultraviolet solidification glue to have a reaction to be hardened and formed; releasing pressure to separate the mold from the ITO substrate; performing reactive ion etchingon the ITO substrate to remove remained ultraviolet solidification glue, and obtaining a convex structure of which the ratio is the same as that of the mold; inverting the ITO substrate, adhering theultraviolet solidification glue to the top of the convex structure through a micro contact method, and performing standing forming; and performing irradiation solidification with an UV light source,so as to obtain the cathode isolation column. According to the preparation method disclosed by the invention, an ultraviolet coining technology is adopted, so that the cathode isolation column is prepared under room temperature and constant pressure; the preparation method is simple in technology and few in steps, and besides, moisture cannot be introduced; the device life of the OLED is greatly prolonged; and the pixel resolution is obviously increased.

The invention provides a method for producing three-color light-emitting diode for display screen, which relates to the production method of LED; including the following steps of: A. using a stand with reflection cup body bottom parts which are not in one flat, that is the stand on which an arbitary position of bottom of the reflection cup body subsidises one height at least and forms a small reflection cup for imbedding one or multiple luminous chips; thickening the frame composed of cup body (6), every electrode lead wire (7), (8), (9), (10) up to more than 1.2mm; B. fixing every color LED luminous chip on corresponding position inside the cup body respectively, connecting the electrode and lead with conducting wire; C. packaging into completed product with various shapes with monolithic transparent epoxide resin. The three-color light-emitting diode provided by the invention has the advantages of long service life, energy conservation, green environment friendly pollution-free, color enrichment and high color purity, and the lightness and color of the diode can be adjusted arbitrarily used with control circuit and environment friendly clean energy.

The invention belongs to the technical field of image processing, discloses a high-quality precise panoramic imaging system and method based on a single lens reflex camera, and provides a solution forintegrated development of multiple single lens reflex cameras. The system comprises a data processing end, a data conversion end and a data acquisition end. The data processing end adopts an embeddedprocessor and is provided with a program for controlling a plurality of camera shutter lines, a mode switching program, a picture downloading program and a panoramic splicing program. According to the invention, an integrated system of shutter line control and picture storage of a plurality of cameras is realized, and an image set collected at the same time can be processed into a panoramic image. A traditional multi-camera image acquisition and storage mode can be replaced, and the system has the advantages of no transmission distortion, time and labor saving, good panoramic effect, high efficiency, low cost and easiness in secondary development; moreover, the system gives accurate geometric information to the panoramic technology, accords with a photogrammetry model, meets high-level requirements of high-quality imaging and is applicable to various scenes.

The invention discloses a projection device. The projection device comprises a lighting source, a reflecting prism, a DMD module and a rotatable reflecting mirror, wherein the lighting source, the reflecting prism and the rotatable reflecting mirror are arranged in sequence; light emitted by the lighting source is coupled with the DMD module through the reflecting prism; the light enters the rotatable reflecting mirror and is reflected by the rotatable reflecting mirror; and the rotatable reflecting mirror is configured to rotate around a first shaft in a reciprocating manner and rotate arounda second shaft in a reciprocating manner after a set time length is delayed under the condition that the DMD module is opened, so that a single pixel is expanded in the direction perpendicular to thefirst shaft and the direction perpendicular to the second shaft.

The invention provides an ink-jet printing method, an ink-jet printing device and a display device. The ink-jet printing method comprises the steps of spraying ink droplets through a sprayer, specifically, the ink droplets comprise at least one of a magnetic material and a conductive material; and applying acting force opposite to the direction of gravity to the dropping ink droplets so as to adjust the shape of the ink droplets.

The invention provides an optical imaging system, and the system sequentially comprises, from an object side to an image side, a first lens with positive focal power, wherein the object side surface of the first lens is a convex surface; asecond lens with negative focal power, wherein the object side surface and the image side surface of the second lens are concave surfaces; a third lens with positive focal power, wherein the object side surface and the image side surface of the third lens are convex surfaces; a fourth lens with positive focal power, wherein the object side surface and the image side surface of the fourth lens are convex surfaces; and a fifth lens with negative focal power, wherein the object side surface and the image side surface of the fifth lens are concave surfaces. The optical imaging system has the advantages of high pixel resolution and small size. In addition, the invention also provides an image capturing device and electronic equipment.

The invention provides a lung electrical impedance imaging method based on VDD-Net. The lung electrical impedance imaging method comprises a conjugate gradient pre-mapping module, a feature extraction module, a depth image reconstruction module and an image denoising module. The depth image reconstruction module maps the measured voltage sequence into field domain spatial distribution information, so that an EIT ill-conditioned problem is converted into a good problem, abstract features of spatial information are extracted through multilayer convolution, and a lung boundary shape is reconstructed by using transposed convolution operation, so that the lung boundary shape is reconstructed, and the reconstructed image is connected with a low-pass filtering module through Dense to remove reconstructed high-frequency noise, and a final reconstructed image is obtained. The training data of VDD-Net uses CT scanning images containing various lung boundary information, and noise conditions such as lung diseases, different thoracic cavity shapes and electrode movement are included. A lung phantom model experiment shows that the VDD-Net has relatively high accuracy on boundary reconstruction capability in lung EIT imaging and has good robustness on model errors and measurement noise.

The invention provides a method for measuring the content of particle surface ligand and a quantum dot ink preparing method. When the method is used for preparing quantum dot ink, the uniformity of quantum dot ink quality can be ensured, the consistency of the solubility, drying rates and coffee ring effects of different batches of quantum dot ink is guaranteed, and the pixel resolution and uniformity of the lighting voltages and photoelectric efficiency of the quantum dot display panel are improved.

The invention provides a method for measuring the content of quantum dot surface ligand and a quantum dot ink preparing method. When the method is used for preparing quantum dot ink, the uniformity ofquantum dot ink quality can be ensured, the consistency of the solubility, drying rates and coffee ring effects of different batches of quantum dot ink is guaranteed, and the pixel resolution and uniformity of the lighting voltages and photoelectric efficiency of the quantum dot display panel are improved.

The invention provides a driving method of a pixel array. The pixel array comprises a plurality of actual pixel units. The driving method comprises the following steps: step 1, conducting amplifying treatment on an input image, so that an intermediate image is obtained; step 2, calculating display parameters of each actual pixel unit in accordance with display parameters of an intermediate theoretical pixel unit of the intermediate image; and step 3, in accordance with the display parameters, calculated in the step 2, of each actual pixel unit, generating actual image signals, and inputting the actual image signals to the various actual pixel units of the pixel array. The invention also provides a driving circuit and a display device. When the driving method is used for driving the pixel array, data volume of a picture to be transmitted can be reduced while a relatively high resolution ratio is achieved, so that time required by transmitting picture data is shortened.

The invention provides a method for measuring the coverage rate of a quantum dot surface ligand, thereby realizing quality evaluation of quantum dots. If Ki is less than 2*10<-10> mol/cm<2>, the quality of the quantum dot is poor; and solution or ink configuration can not be carried out until the Ki value is improved. With the provided method, the result is accurate; and the operation is simple. Furthermore, with the method, the high stability of the quantum dot surface ligand content is ensured; the solubility of different batches of quantum dots is guaranteed; a coffee ring effect caused bydifferent drying rates in quantum dot solution preparation for a film is avoided; add the pixel resolution and uniformity of the brightening voltage and the photoelectric efficiency of the quantum dotdisplay panel can be improved.