2254 results about "Light emission" patented technology

The invention provides a patterned photonic crystal laser and a preparation method thereof, the laser comprises a substrate, and a first mask layer, a photonic crystal layer and a second mask layer which are sequentially deposited on the substrate, a light emitting area is etched in the central area of the second mask layer, and transparent conductive layers are deposited on the surface of the second mask layer and the light emitting area; a p-annular electrode is arranged on the surface of the transparent conductive layer on the second mask layer, and an n-annular electrode is arranged below the substrate; the photonic crystal layer is composed of a nanorod array and a polymer filled in gaps of nanorods; holes distributed in a patterned array are etched in the surface of the first mask layer, and nanorods are epitaxially grown in hole areas; the nanorod is formed by sequentially depositing a substrate contact layer, a first waveguide layer, a multi-quantum well layer, a second waveguide layer, a coating layer and a component gradient layer. According to the invention, through collaborative design optimization of all the layers, emission of laser with specific wavelength and preparation of a laser emitting laser with single longitudinal mode, narrow linewidth and stable wavelength are realized.

An embodiment relates to a light emitting diode (LED) mask for personal combination stimulation, which is to be worn on a face, and more specifically to an LED mask for personal combination stimulation, which can prevent skin damage due to heat generation caused by light emission in an LED, reduce manufacturing and maintenance costs, and effectively make improvement such as whitening facial skin, reducing wrinkles, in particular, wrinkles around eyes. The LED mask for personal combination stimulation includes a mask unit to be put on the face of a user; and a light irradiation unit installed in the mask unit and including a plurality of LEDs arranged on a substrate, wherein the LEDs comprise multiple types of LED chips to emit light of different wavelengths, and the multiple types of LED chips are configured as a combination LED module in a single support structure and arrange on the substrate.

The present invention provides a light emitting diode chip comprising a substrate, a plurality of light emitting diodes, a first electrode and a second electrode, the second electrode being at least partially embedded in the substrate such that a bottom end of the second electrode is lower than a bottom end of the plurality of light emitting diodes. In the invention, the second electrode is at least partially embedded into the substrate of the chip, so that the space between the adjacent light-emitting diodes occupied by the second electrode is reduced, the gap between the adjacent light-emitting diodes can be adaptively reduced, and the overall size of the chip is relatively reduced; therefore, the method can be matched with lighter and more portable electronic equipment, and is suitable for more application scenes. The invention further provides a light-emitting diode chip, the top surface of the top semiconductor layer of the light-emitting main body of the diode is arranged to be a non-plane with an optical microstructure, light emitting can be enhanced, diffuse reflection can be increased, the light emitting rate can be improved, and the performance of the light-emitting diode chip can be optimized.

The invention discloses NnLuz and NnH3H protein mutants and an application of the NnLuz and NnH3H protein mutants in enhancing the bioluminescence intensity of fungi or plants. According to the method disclosed by the invention, core enzymes NnLuz and NnH3H in a fungus bioluminescence pathway are optimized through rational design, and the catalytic efficiency and the luminous intensity of a bioluminescence system are remarkably improved. Experiments prove that 1) the luminous intensity of the NnLuz [delta] N19v2 (I103T / L167K double mutant) in yeast and plants is remarkably superior to that of a reported NnLuzv4 mutant and is 3-4 times that of the reported NnLuzv4 mutant, 2) the catalytic efficiency of the NnH3Hv3 (K307T mutant) is improved by more than 2 times, the luminous stability is remarkably enhanced, and 3) when the NnLuz [delta] N19v2 and the NnH3Hv3 are cooperatively expressed, the luminous intensity of the system reaches the optimal level, and the self-luminous plant with remarkably enhanced luminescence is created.

The present disclosure relates to the technical field of display chips. Disclosed are a full-color MicroLED and a manufacturing method therefor. The full-color MicroLED comprises a driving substrate, a first light-emitting layer, a first connecting layer, a second light-emitting layer, and a second connecting layer; the driving substrate comprises a first P-type semiconductor electrode transition layer; the first light-emitting layer comprises first light-emitting units and a second P-type semiconductor electrode transition layer; the first connecting layer comprises a first N-type semiconductor electrode transition layer, first N-electrode grids, and a third P-type semiconductor electrode transition layer; the second light-emitting layer comprises second light-emitting units and a fourth P-type semiconductor electrode transition layer; the second connecting layer comprises a second N-type semiconductor electrode transition layer and second N-electrode grids; a color conversion layer is provided at the position of the second connecting layer corresponding to some of the second light-emitting units. In the present disclosure, the driving substrate drives the light-emitting units on the first light-emitting layer and the second light-emitting layer to respectively emit green light and blue light, and then part of the blue light of the second light-emitting units is converted into red light by means of the color conversion layer, thereby achieving full-color light emission.

The application relates to the technical field of display panels, and discloses a display panel, a display screen and electronic equipment. The CGL of the display panel comprises N-CGL, i-CGL and P-CGL which are stacked in sequence. The LUMO energy level of the organic material corresponding to the i-CGL is less than or equal to -3.5 eV, and the work function of the inorganic material corresponding to the i-CGL is greater than or equal to 3.5 eV. In particular, the Fermi energy level of the i-CGL is lower than that of the P-CGL host material, and the thickness of the i-CGL can be any value less than or equal to 15 nm (especially less than 5 nm). In this case, the charge generation capability of the N-CGL, the i-CGL and the P-CGL in the direction parallel to the thickness of the CGL is improved, the sheet resistance in the direction perpendicular to the thickness of the CGL is greater than 1 GΩ / Dia, the sub-pixel can realize high-efficiency and low-power-consumption light emission, the voltage value obtained by voltage division from the driving voltage of another sub-pixel is small, and the crosstalk between the sub-pixels is reduced or even eliminated.

The invention discloses a control method, a storage medium and electronic equipment, and the method comprises the steps: controlling an auxiliary screen light-emitting control signal drive circuit (EOA) and an auxiliary screen substrate line drive scanning circuit (GOA) to be in a periodic on-off state when the electronic equipment is in a main screen display state; when the auxiliary screen EOA is turned on, the auxiliary screen GOA is turned off, that is, a display signal of the auxiliary screen EOA cannot act on the driving module due to the disconnection of a path of the auxiliary screen GOA; when the auxiliary screen EOA is closed, the auxiliary screen GOA is opened, that is, the driving module cannot acquire the display signal. Through the method, the problem of display difference between the main screen and the auxiliary screen due to the fact that the auxiliary screen GOA and the auxiliary screen EOA and the main screen GOA and the main screen EOA are in different working states for a long time can be avoided, and the problem that the auxiliary screen flashes in a white screen in a reverse color mode can also be avoided.

The invention discloses fluorescent glass ceramic, a preparation method thereof and a luminescent device, and belongs to the technical field of luminescent materials. The fluorescent glass ceramic comprises glass powder and fluorescent powder, the glass powder comprises zinc borosilicate glass powder; the zinc borosilicate glass powder comprises the following components in percentage by mole: 5%-20% of SiO2, 10%-35% of B2O3, 20%-65% of ZnO, 0.3%-15% of P2O5, 2%-20% of RO and 0.1%-15% of R2O, RO is selected from at least one of MgO, CaO, SrO and BaO, and R2O is selected from at least one of Li2O, Na2O and K2O; the fluorescent powder comprises blue-green fluorescent powder; the emission peak wavelength of the blue-green fluorescent powder is 480-510 nm; based on the total mass of the glass powder and the fluorescent powder, the mass percentage content of the glass powder is 30-80%, and the mass percentage content of the fluorescent powder is 20-70%. The fluorescent glass ceramic is high in reliability and can be applied to high-power light emitting, a light emitting device formed by combining the fluorescent glass ceramic and a proper light source can provide an accurate azure light emitting effect, and the requirements in application scenes with harsh color requirements are met.

According to an embodiment, an optical apparatus includes: a light emission portion configured to emit light; an image-forming optical element array; and first and second wavelength emission surfaces. The image-forming optical element array includes first and second image-forming optical elements. The second wavelength emission surface is arranged at a position different from the first wavelength emission surface. The first and second wavelength emission surface respectively include: a first wavelength emission region configured to emit by the light, light of a first wavelength spectrum toward the image-forming optical element array; and a second wavelength emission region configured to emit by the light, light of a second wavelength spectrum toward the image-forming optical element array. The first wavelength emission surface is positioned at a focal plane of the first image-forming optical element. The second wavelength emission surface is positioned at a focal plane of the second image-forming optical element.

The invention relates to the field of packaging detection, in particular to a full-color Micro LED micro display module packaging detection method, device and equipment, and the method comprises the following steps: carrying out pixel-level thermal induction on a micro display module to be detected, collecting global pixel thermal induction self-luminous response parameters, carrying out instantaneous light response analysis, and generating an instantaneous light response curvature; multi-time-point response trend analysis is carried out based on the instantaneous light response curvature, global pixel thermal disturbance coupling evolution is carried out, and a pixel thermal disturbance response map is constructed; performing inter-pixel multi-dimensional response difference calculation and abnormal deviation region positioning according to the pixel thermal disturbance response map, and extracting an abnormal deviation display module region; performing spatial arrangement inversion on the abnormal deviation display module area to generate actual pixel point coordinates of the abnormal area; according to the method, error compensation is carried out on the offset pixels through precise and efficient huge transfer error analysis, and the packaging precision and reliability control level of the micro-display module are enhanced.

The present invention relates to an organic light-emitting device employing, as a host of a light emission layer, an anthracene derivative compound having a characteristic structure by introduction of a benzofuran structure into the anthracene backbone, and as a dopant of the light emission layer, a polycyclic compound having a characteristic structure. The organic light-emitting device according to the present invention is an organic light-emitting device with significantly improved external quantum efficiency and can be advantageously utilized not only for lighting devices but also for various display devices, such as flat, flexible, and wearable displays.

The invention relates to the technical field of photoelectric device manufacturing, in particular to an inverted-structure Micro-LED device and a preparation method thereof. Comprising the following steps: S1, acquiring a substrate, and forming a mesa structure on the upper surface of the substrate; s2, forming a p electrode structure on the mesa structure, and forming an n electrode structure on the substrate at a position spaced from the mesa structure; s3, coating a photoresist; s4, carrying out exposure treatment, and carrying out drying treatment and developing treatment on the exposed substrate; s5, carrying out multiple times of etching treatment on the substrate, and after each time of etching treatment is completed, carrying out cooling treatment on the substrate so as to form a conical structure on the substrate; and S6, removing the mask layer, and inversely connecting the substrate to the PCB substrate through the p electrode structure and the n electrode structure to obtain the device. The light beam is totally reflected for multiple times in the conical structure, so that the divergence angle of the light beam is obviously reduced, and the light emitting angle of the device is obviously reduced.

The invention discloses a preparation method and application of a multimode luminescent cesium yttrium chloride lead-free perovskite luminescent material. In the specific synthesis process, firstly, precursor materials-cesium carbonate, yttrium carbonate and cerium acetate are dissolved in a mixed solution of glacial acetic acid and hydrochloric acid, and a precursor solution is obtained; then dissolving a certain amount of antimony acetate with acetonitrile to form an anti-solvent solution; and finally, adding the precursor solution into the anti-solvent solution to obtain the Sb / Ce double-doped cesium yttrium chloride lead-free perovskite luminescent material. During application, the Cs3YCl6 Sb and the Cs3YCl6 Sb / Ce luminescent materials are combined for use to form a pattern, and protected information can be decrypted through a specific excitation wavelength. According to the invention, the cesium yttrium chloride lead-free perovskite luminescent material capable of realizing multimode luminescence can be prepared in a short time.

Lighting system having visible-light source including semiconductor light-emitting devices arranged for generating plurality of visible-light emissions having range of color points including cool to very cool white color point for daytime and warm to very warm white color point for nighttime. Optical system arranged for causing some visible-light emissions to have range of beam widths including relatively wide and narrow beam widths. Mounting system causing range of beam directions. Control system causing visible-light emissions to include daytime configuration having cool to very cool white color point and relatively wide beam width, and nighttime configuration having warm to very warm white color point and relatively narrow beam width. Daytime configuration includes control system for causing visible-light emissions to include lateral- or up-light emissions, promoting relatively high equivalent melanopic lux. Nighttime configuration includes control system for causing visible-light emissions to include down-light emissions promoting relatively low equivalent melanopic lux.

A light emission control method comprises the following steps: (A) determining an N value; (B) obtaining M different presentation sequences; (C) in the current time interval, for each to-be-displayed picture, according to the picture gray-scale value corresponding to each light-emitting component in the to-be-displayed picture and the total number N of the sub-periods, determining the number of display time periods of units to which each light-emitting component is divided in each sub-period by using the current sequence; (D) in the next time interval, for each to-be-displayed picture, according to the picture gray-scale value corresponding to each light-emitting component in the to-be-displayed picture and the total number N of the sub-periods, determining the number of display time periods of units to which each light-emitting component is divided in each sub-period by using the next sequence; and (E) repeating the step (D) until the next sequence is the previous sequence of the current sequence, and returning to the step (C). Therefore, artifacts are improved.

The invention discloses an intelligent frameless full-projection down lamp system based on an adjustable light emitting angle, and relates to the technical field of light adjustment of projection down lamps, the intelligent frameless full-projection down lamp system comprises a lamp shell, a reflection cup cover, a lamp panel assembly and spring buckles, the reflection cup cover is slidably connected in the lamp shell, the lamp panel assembly is arranged in a through hole in the inner side of the reflection cup cover, and the spring buckles are symmetrically installed on the back side of the lamp shell; the lamp panel assembly comprises an integrated LED lamp panel and a lantern ring arranged on the back side of the integrated LED lamp panel. The deflection column and the loop bar mechanism are innovatively combined and linked with the reflection cup cover, precise control over the projection direction and flexible adjustment of the light coverage range are achieved, the system is cooperatively controlled through multiple driving assemblies, multi-dimensional optical adjustment is achieved under the constraint of a frameless structure, and the system is suitable for large-scale popularization and application. And meanwhile, the heat dissipation problem in a compact space is solved through the integrated heat dissipation fin sleeve, and a brand new solution is provided for an intelligent illumination and projection system.

Provided are a display device and a method of driving the same that prevent an operation of an NIR proximity sensor from affecting luminance change, and the display device includes a display panel including a plurality of pixels, and a gate driver including first to fourth scan drivers and a light emission control signal driver, wherein each of the pixels includes a driving transistor configured to control a driving current of a light-emitting element, and a compensation transistor configured to compensate for a threshold voltage of the driving transistor, each of the pixels is sequentially driven in a first bias section, an initialization section, a sampling section, a second bias section, and a light emission section during one frame, and a first scan signal is output so that the compensation transistor is turned on before the sampling section.

The invention relates to a packaging structure of a micro display chip and a display device, and the packaging structure comprises a substrate, the surface of which comprises a display area and a non-display area; the electrode pads are located in the non-display area; and a plurality of through hole plugs located in the substrate, wherein one end of each through hole plug is electrically connected with the electrode pad. In AR near-to-eye display application, the light absorption structure can effectively absorb stray light returned from components such as an optical waveguide and the like, secondary specular reflection of the metal electrode pad on the non-display area is avoided, ghosting is prevented from being formed, and the imaging contrast ratio and the picture purity are remarkably improved. The light absorption structure is integrated in the packaging structure, and a stray light feedback path is cut off through a physical means on the premise that normal light emitting of a display area and electrical connection of an electrode pad are not affected, so that the optical performance of the micro-projection ray machine is improved, the final display effect is guaranteed, and the display effect is improved. Therefore, the technical problem of image quality degradation caused by high reflectivity of the non-display area is effectively solved.

The invention belongs to the technical field of electroluminescent fiber devices, and particularly relates to a dynamic color-changing electroluminescent fiber device and a preparation method thereof. The electroluminescent fiber device comprises a three-color electroluminescent fiber and a driving control circuit, the three-color electroluminescent fiber comprises an inner electrode conductive fiber, an outer electrode conductive fiber, three luminescent functional layers and a shared electrode; the driving control circuit comprises a lithium battery, an FPGA (Field Programmable Gate Array), an isolation inversion boost module and the like; the lithium battery supplies power to the whole circuit; the circuit system provides four independent output ports which are connected with the four electrodes; the three light-emitting functional layers are of a stacked structure formed by red, green and blue light-emitting active slurry through a step-by-step coating method, and the driving circuit independently controls the active light-emitting layers of the three colors, so that the light-emitting colors are free of crosstalk and can be regulated and controlled in real time, and dynamic color-changing light emitting of full-color-gamut light emitting is achieved. The color gamut is wide, the stability is high, and color crosstalk between the light-emitting layers is avoided; the method is good in repeatability, low in cost and suitable for industrial production.

The application discloses a light-emitting control method and device, a storage medium and an electronic device. The light-emitting control method comprises the following steps: acquiring a motion state of a carrier; determining a target light-emitting part needing light emission from a plurality of light-emitting parts included in a light-emitting device according to the motion state; determining a light-emitting mode of the target light-emitting part; and controlling the target light-emitting part to emit light according to the light-emitting mode. The application can relieve motion sickness of passengers.

The invention provides an image acquisition system and an image data processing method and device.The system comprises a multi-line scanning image sensor, a light source and a data processing unit, and the working face of the multi-line scanning image sensor is parallel to the plane where a measured object is located; a linear photosensitive unit on the working surface of the multi-line scanning image sensor deflects at a preset angle relative to the movement direction of a measured object, and a light emitting direction of the light source and a plane where the measured object is located form a preset angle; the motion step length of the measured object is a preset multiple of the size of a pixel unit in the linear photosensitive unit projected on the surface of the measured object; and the data processing unit is used for receiving the initial image data of the detected object sent by the multi-line scanning image sensor and carrying out time delay integral processing, pixel offset processing and accumulation processing to obtain oblique image data for detecting the defects of the detected object. The system can effectively reduce the production cost of scratch detection.

The embodiments of the present application relate to the technical field of optical communications and reduce the energy consumption of an optical communication system. Provided are an optical module, an optical communication system, and a communication method. The specific solution is: a first optical module comprising: a laser drive unit, a light emission assembly and a control unit, wherein the laser drive unit and the light emission assembly form a high-speed channel, and the laser drive unit, the light emission assembly and the control unit form a low-speed channel, the high-speed channel being used for transmitting a service signal; and the control unit is used for controlling the laser drive unit to generate a low-speed modulation signal, and the light emission assembly is used for obtaining a first low-speed optical signal on the basis of the low-speed modulation signal, and sending the first low-speed optical signal to a light-receiving assembly of a second optical module, the first low-speed optical signal being a non-service signal between the first optical module and the second optical module. The embodiments of the present application are applied to an optical communication process between a first network device and a second network device.

The utility model discloses a display panel and a display device, and belongs to the technical field of display. The display panel comprises a driving backboard, a first electrode layer, a filling layer, a supporting cushion layer, a separation layer, an organic light-emitting layer and a second electrode layer. The supporting cushion layer is located on the side, away from the driving backboard, of the filling layer, the side, away from the driving backboard, of the filling layer has a first height difference, the side, away from the driving backboard, of the supporting cushion layer has a second height difference, and the second height difference is smaller than the first height difference. The partition layer is located on the side, away from the driving backboard, of the supporting cushion layer, and a partition groove is formed in the side, away from the driving backboard, of the partition layer. In this way, the flatness of the side, away from the driving back plate, of the supporting cushion layer can be good, and it is guaranteed that the partition effect of the partition grooves on the organic light-emitting layer is consistent. Meanwhile, the filling layer and the supporting cushion layer can play a role in lifting the partition layer, the minimum distance between the puncture and the first electrode is increased, the risk of puncture electric leakage is reduced, and the phenomenon that the display panel emits light unevenly is improved.

The invention relates to a dynamic reconstruction method and system for a digital twin optical switching network, and relates to the technical field of optical communication network intellectualization, in particular to a dynamic reconstruction system applied to an optical switching network, comprising the following steps: in a digital twin, establishing a topological graph capable of being dynamically updated in real time by adopting multi-dimensional real-time topology perception, and combining key parameter data to obtain a topological graph; and high-precision twinning synchronization is established for the digital twinning body and the physical network state. And service intention analysis is performed on service requests or fault triggering reconstruction through an intention driving control layer, different services are constrained and mapped, and a constraint set is quantified. And combining the constraint set with source and destination nodes, and analyzing on a topological graph to generate a candidate strategy. And performing simulation verification by the digital twin through a simulation engine and pre-verification, selecting an optimal strategy, and outputting an instruction. In a physical network layer, physical processing such as port switching and light emitting of an optical module is executed according to an instruction, and performance deviation is corrected through closed-loop feedback. According to the invention, high-reliability and high-efficiency dynamic optical path reconstruction is realized.

The embodiment of the utility model relates to an optical emission module and an optical interconnection structure. The light emitting module comprises a first electric chip used for providing a driving signal; the laser is connected with the first electric chip and is used for emitting light under the action of the driving signal, and the light emitting direction of the laser deviates from the first electric chip; the light path adjusting unit is arranged on a light emitting path of the laser, and the light path adjusting unit is used for adjusting a light path of a light beam from the laser, so that a preset included angle is formed between emergent light and incident light of the light path adjusting unit.

An image reading apparatus includes: a reading unit configured to read a document being conveyed on a conveyance path, the reading unit including a first irradiation unit configured to irradiate with light from an upstream side of a reading position of the reading unit toward the reading position in a conveyance direction of the document, and a second irradiation unit configured to irradiate with light from a downstream side of the reading position toward the reading position; and a control unit configured to control light emission of the first irradiation unit and the second irradiation unit such that a light quantity by the first irradiation unit is larger than a light quantity by the second irradiation unit in a first range in a range of the conveyance path in a width direction orthogonal to the conveyance direction.

A temperature measurement device (1) comprises: a light emission unit (10) that generates coherent, continuous measurement-light; a light detection unit (30) that detects reflected light or transmitted light of the continuous measurement-light which is projected onto a sample (50) to be measured; and an analysis unit (42) that calculates a temperature distribution of the sample (50) to be measured on the basis of the intensity of the reflected light or the transmitted light detected by the light detection unit (30). The analysis unit (42) calculates the optical thickness of the sample (50) to be measured from a temporal change in the intensity of the reflected light or the transmitted light and, by using a refractive index distribution model representing the relationship between the optical thickness and a refractive index distribution in the thickness direction of the sample (50) to be measured at the time of a temperature change, calculates the refractive index distribution from the optical thickness, and calculates the temperature distribution of the sample (50) to be measured by converting the refractive index distribution into the temperature distribution on the basis of the thermo-optical coefficient of the sample (50) to be measured.

The invention discloses a real-time focusing compensation method and system for femtosecond laser curved surface machining, and particularly relates to the technical field of light beam focusing control in femtosecond laser precision machining. The method is used for solving the technical problem of focus space-time deviation during high-speed curved surface machining caused by mismatching of dynamic response characteristics of an existing galvanometer and a dynamic focusing system. Pre-judging a response asynchronous risk by acquiring system response parameters and combining geometric and dynamic characteristics of a processing track, and identifying a dominant lag type; determining an error contribution distribution relation between the two systems according to the lag type; resolving to obtain a space trajectory error component which should be borne by the dynamic focusing system; and finally, controlling the laser to delay light emission according to the component until the dynamic focusing system is adjusted in place. Accurate diagnosis and quantitative compensation of a focus lag root are realized, and the focus position precision and the process reliability of femtosecond laser processing of a complex curved surface are effectively improved.

Provided is a semiconductor light-emitting element having good light emission characteristics compared to conventional light-emitting elements. The semiconductor light-emitting element includes a light-emitting layer including a laminate in which first and second III-V compound semiconductor layers are stacked repeatedly. Group III element in the first and second III-V compound semiconductor layers is one type or two or more types selected from the group consisting of Al, Ga, and In. Group V element in the first and second III-V compound semiconductor layers is one type or two or more types selected from the group consisting of As, Sb, and P. A composition wavelength difference between composition wavelengths of the first and second III-V compound semiconductor layers is 70 nm or more. In a band structure of the laminate, conduction band-side well depth (Dc) is larger than valence band-side well depth (Dv), and Dc / (Dc+Dv) is 65% or more.

The light source device includes a semiconductor light emitting element that emits light, and a light source control unit that generates an emission profile of the semiconductor light emitting element and drives the semiconductor light emitting element on the basis of the emission profile. The light source control unit executes: processing of dividing one frame period in an image signal acquired by an image sensor into N (N is an integer of 2m, m being an integer of 2 or more) dimming sections; processing of generating an emission profile for controlling light emission intensity in units of 2k (k is an integer from 0 to m) dimming sections according to a target light amount in one frame period; and processing of performing dimming control for a next frame on the basis of the emission profile.