143results about How to "Improve photosensitivity" patented technology

Provided are a distance measuring sensor including a double transfer gate, and a three dimensional color image sensor including the distance measuring sensor. The distance measuring sensor may include first and second charge storage regions which are spaced apart from each other on a substrate doped with a first impurity, the first and second charge storage regions being doped with a second impurity; a photoelectric conversion region between the first and second charge storage regions on the substrate, being doped with the second impurity, and generating photo-charges by receiving light; and first and second transfer gates which are formed between the photoelectric conversion region and the first and second charge storage regions above the substrate to selectively transfer the photo-charges in the photoelectric conversion region to the first and second charge storage regions.

The invention provides a water nano compound photosensitive coating and a preparation method thereof and a photosensitive film formed by the coating. The water nano composite photosensitive coating is formed by the way that nano material with excellent properties is compounded with film forming agent, thus refractive index modulation degree of photosensitive coating is improved. The coating comprises the following components (by weight percent): 10-50% of film forming agent, 15-30% of monomer, 20-50% of photoinitiator, 0.05-1% of photosensitizer, 2-10% of crosslinking agent and 0.1-1% of nano material. The holographic photosensitive film of the invention comprises a base film, a photosensitive nano compound polymer coating and a surface protective film. The reflecting holographic photosensitive film has higher luminous sensitivity, reflection efficiency and refractive index modulation degree, storage life is long, and hologram is stable.

The invention discloses a method for preparing negative photosensitive polyimide which is based on 2, 2-bis<4-(2, 4-diaminophenoxy) phenyl> hexafluoropropane. The method takes the 2,2-bis<4-(2,4-diaminophenoxy)phenyl> hexafluoropropane and dihydric acid anhydride as raw materials for carrying out the polymerization reaction, hyper-branched fluoride-containing polyamic acid which takes the macromolecular chain end group as the anhydride group is obtained, the hyper-branched fluoride-containing polyamic acid is further reacted with p-hydroxyaniline or m-hydroxyaniline, hyper-branched fluoride-containing polyimide which takes phenolic hydroxyl as the end group by chemical imidization reaction is obtained, phenolic hydroxyl end-blocked fluoride-containing hyper-branched polyimide powder is obtained by precipitation, washing and vacuum drying process, and the hyper-branched fluoride-containing polyimide photosensitive material with the negative photosensitive performance is obtained by undergoing the functionalization after the dissolution. The material has high photosensitive performance, high resolution and excellent process, and the cured product has low water absorption, excellent heat resistance, dielectric performance and mechanical performance, thus having great application prospect in the field of electronic micro-electronics.

The invention discloses an optical shot for image capture. The optical shot comprises five lenses with refractive power, which, from an object side to an image side, are sequentially a first lens with positive refractive power, a second lens with negative refractive power, a third lens, a fourth lens with positive refractive power and a fifth lens with negative refractive power, wherein the object side surface of the first lens is a convex surface; the object side surface of the second lens is a concave surface; the object side surface of the fourth lens is a convex surface, and at least one surface of the object side surface and the image side surface of the fourth lens is an aspheric surface; and the object side surface of the fifth lens is a concave surface, and at least one inflectionpoint is formed on the image side surface of the fifth lens. The optical shot for image capture is also provided with an aperture and an electric photosensitive element for imaging a photographed object; and the aperture is arranged between the photographed object and the second lens. Through the mode of configuring the lens group, the shot volume can be effectively reduced, the sensitivity of anoptical system can be reduced, and higher resolution power can be acquired.

A polarization holographic storage device of using photochromic material film as recording media is prepared as using space light modulator as page information input element, using image collector as information reading out unit and using photochromicmaterial material film as recording material, using light of photochromic material to lead each anisotropy , using orthogonal polarization light as object light and reference light to record modulated holography for raising image S ¿C N ratio, using bacteria sclererythrin film or fulgide film as erasable holographic recording media.

The invention relates to an image display system and a manufacture method thereof. The image display system comprises a basal plate, a switch film transistor, a driving film transistor, a light-sensing component and a capacitor, wherein a baffle layer is formed on the basal plate; no conductive layer is formed in a first section predicted to form the switch film transistor so as to form a shielding layer; and a conductive layer is formed in a second section predicted to form the driving film transistor, the light-sensing component and the capacitor so as to form the shielding layer. Weather the conductive layer exists or not in the single crystallized processing procedure and the thermal conductive phenomenon of a quasimolecule laser annealing method are utilized to form polycrystalline silicon layers with different grain sizes in the first section and the second section so that the image display system has favorable uniformity of luminance.

The invention discloses a light-sensing organic field-effect transistor and a preparation method thereof. The transistor comprises a substrate, a grid electrode arranged on the substrate and an insulating layer arranged on the grid electrode; the transistor further comprises a self-assembled monomolecular-modified layer and a source electrode, a drain electrode and at least one organic semiconductor compound single crystal wire positioned on the self-assembled monomolecular layer. The self-assembled monomolecular layer comprises materials of octadecyltrichlorosilane, octacyltrichlorosilane, phenyltrichlorosilane and the like; and the preferential organic semiconductor compound is 6-methyl-anthracene [2,3-b] benzo-[d] thiophene. The length of the organic semiconductor compound single crystal is 80-300 microns, and the diameter is 1-10 microns. The preparation method provided by the invention has simple prepration process and low cost, and the prepared organic field-effect transistor has very high response on a low-energy light source with the energy of 10-90 microwatts per square centimeter, high mobility, high photosensitivity and high ratio of light current to dark current.

The invention relates to photosensitive polyimide (PSPI) and the manufacture method. It adopts photosensitivity diamine containing alkyl, alkoxyl or methylthio on consecutive position of benzene ring and photosensitivity diamine containing acryloyl, dropping tetracarboxylic acid bianhydride organic solution into photosensitivity diamine mixture solution to take polymerization, and taking chemical imine to gain PSPI. The polymer has high photosensitivity and high resolution, excellent thermal stability and dissolubility.

The invention discloses a high photosensitive real time polarization imaging minimal deviation array and an imaging device thereof. The deviation array comprises a plurality of minimum period units which are closely arranged successively, wherein each minimum period unit includes four polarization units with different polarization angles; the four polarization angles are respectively 0DEG, 45DEG, 90DEG or 135DEG; and the lens of each polarization unit includes a plurality of polarizing films and non-polarized lenses so that the problem that in the prior art insufficient photosensibility makes the obtained polarized image have great error when the light is low or the time of exposure is not sufficient can be solved. The invention also discloses an imaging device and a combination method of pixels based on a high photosensitive real time polarization imaging minimal deviation array, and can solve the saturation problem for different types of lenses.

The invention disclosed a hexaarylbisimidazole like compound, a method for preparing the same, application thereof in the preparation of photooxidant or photoinitiator, as well as a composite containing the same. Compared with the prior hexaaryldiimidazole compound, the compound in the invention can absorb longer wavelength up to 410 nanometers, so the compound and the composite containing the same have higher photosensitivity.

The invention discloses an optical lens for shooting, which comprises a first lens with positive refractive power, a second lens with negative refractive power and a third lens from an object side to an image side in turn, wherein an object side surface of the first lens is a convex surface; an object side surface of the second lens is a concave surface, and an image side surface of the second lens is a concave surface; the object side surface and the image side surface of the second lens are aspheric surfaces; an image side surface of the third lens is a concave surface; an object side surface and the image side surface of the third lens are aspheric surfaces; and at least one inflection point is arranged on the image side surface of the third lens. Three lenses with refractive power arearranged in the optical lens for shooting. Due to the configuration mode of the lens, the total length of the lens can be effectively shortened, the sensitivity of an optical system is reduced, and high imaging quality is achieved.

The method improves capability of technique for packing tranditional photoelectric chip for example chip of optical sensor. Photoelectric chip is bonded on prearranged position of transparent base plate (such as glass base plate), where there is circuit layout. A joining pad connects the photoelectric chip to the transparent base plate at the prearranged place. After an existed sealed hollow interlayer is detected, then structure of each chip is cut to each simple piece, which is assembled to module according to specification. Being different to traditional encapsulation, the invention raises rate of good product, and saves material.

The invention discloses an active pixel of a complementary metal oxide semiconductor (CMOS) image sensor. The active pixel at least comprises a photosensitive component which is placed inside a semi-conductor substrate, a reset transistor and a source following transistor which are connected with the photosensitive component, a switch transistor, and a row positioning line. The pixel photosensitive component of the image sensor comprises two photosensitive regions, namely a low dose foreign ion injection region, and a high dose foreign ion injection region near the reset transistor. When in low illumination, photo-electricity charge generated in the photosensitive component is only collected in the high dose foreign ion injection region, grain of photo-electricity transition is high, and sensitivity of the sensor is high. When in high illumination, photo-electricity charge generated in the photosensitive component is collected in the whole photosensitive component. Therefore, the active pixel can effectively improve the luminous sensitivity of the image sensor in the low illumination, and the sensor collects more real object detail information when in the low illumination.

The preparation process to single layer organic phhotoelectric conductor containing Fluoroperylene imide includes the steps of: mixing carrier generating material and carrier converying material in the weight ratio of 1 to 10-100 and dissolving in solvent to obtain organic photoconductive solution with solid content of 5-40 wt%; and dip coating the solution to conducting substrate and eliminating solvent to obtain single layer organic photoelectric conductor film of 5-40 micron thickness. The present invention uses Fluoroperylene imide as organic photoelectric conductor and prepares the photoelectric conductor through direct dissolving and coating process. The phoeoelctric conducting has high photosensitive sensitivity and small dark conductance and may be work in positive and negative voltage.

The invention provides an optical imaging system, which sequentially comprises a first lens with a positive refraction force, a second lens with a negative refraction force, a third lens with a positive refraction force and a fourth lens from an object side to an image side, wherein the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the image side surface of the fourth lens is a concave surface, and at least one of the object side surface and the image side surface of the fourth lens is an aspheric surface; wherein, the optical imaging system is also provided with an aperture and an electronic photographic element for imaging a shot object, wherein the aperture is arranged between the shot object and the first lens; and the optical imaging system has four lenses with refraction forces. By the configuration mode of the lens group, the lens volume can be effectively reduced, the sensitivity of the system is reduced, and high resolving power can be obtained.