3465 results about "Transmittance" patented technology

The invention discloses an improved YOLOv11-based high-reflection and high-transmittance material surface defect detection method, which comprises the following steps: S1, acquiring a mobile phone screen surface defect image, preprocessing and labeling, and generating a training data set containing three defects of scratches, edge breakage and cracks; s2, constructing a defect detection model; s3, averagely dividing an input image into four independent detection regions, adopting a bounding box overlapping area weight distribution strategy for cross-region defects, and performing partition counting on the image by using a defect detection model; s4, constructing a surface defect detection network meeting the real-time requirement of the industrial production line, and outputting a detection result and a processing frame rate; s5, pixel-level mask segmentation is carried out on the scratch defect, and contour coordinates and geometric features are extracted; and S6, fitting the actual damage size of the scratch defect on the surface of the high-reflection and high-transmittance material according to the segmentation result. According to the method, the detection speed is high under the condition that the accuracy is ensured, and a reliable solution is provided for surface flaw detection of the high-reflection and high-transmittance material.

The invention discloses an automatic testing device and method for multi-directional tensile strength of textiles based on constant tension, and relates to the technical field of tensile strength detection.The automatic testing device comprises a rigid rack system, and a high-elastic fabric optical response mechanism is integrated on a double-stand-column portal frame of the rigid rack system; the fiber damage process is reflected through the light transmittance of light to the fabric and the light spot change; the high-elastic fabric optical response mechanism comprises a sealing light insulation assembly, a light source assembly and an imaging assembly. The light source assembly comprises pulse LED light source arrays arranged at equal intervals in the fabric stretching direction, a lampshade and a transverse movement driving unit. The problems that in the prior art, when the tensile strength of a fabric is detected, only the limit value when a sample is completely broken can be recorded, and microcracks generated by step-by-step failure of fibers in the stretching process cannot be captured are solved. The device has the advantages that when the tensile strength of the fabric is detected, the fiber fracture process in the fabric is directly reflected through the change of light spots formed by light penetrating through the fabric, and the like.

The invention relates to an antistatic PET (Polyethylene Terephthalate) base film for preparing a polaroid release film and a preparation method thereof, the release film base film is prepared by taking an optical-grade PET slice as a main body, adding modified PET with a specific structure and a modified SiO2 filler, and carrying out co-extrusion casting, a unique three-section stretching process and coating with a coating liquid. According to the invention, material modification and process improvement are carried out, specifically, an optical-grade PET slice is taken as a main body material, modified PET and a modified SiO2 filler with a specific structure are added, a film is prepared through co-extrusion casting and a unique three-section stretching process, and then the surface of the film is coated with a layer of antistatic coating liquid, so that the antistatic film is obtained. The finally prepared base film has low alignment angle, low transverse hot shrinkage rate and high surface adhesion, keeps the characteristics of high light transmittance and low haze of an optical-grade polyester film, endows the film with certain antistatic property, and is particularly suitable for being used as a release film of a high-end polaroid.

The embodiment of the invention discloses an optical film, a polaroid and a display device. The optical film comprises a first base layer; the second base layer is positioned on at least one side of the first base layer; the first base layer has a first solid phase; the second base layer contains at least two second solid phases; in the at least two second solid phases, two adjacent second solid phases are connected to form a plurality of interfaces, the plurality of interfaces are distributed in the second base layer, and the two second solid phases forming the interfaces are made of different materials. The multiple interfaces are distributed on the second base layer, so that directional reflection of light on the second base layer is reduced, and the anti-dazzling effect is achieved. Besides, the optical film can also provide good light transmittance and higher mechanical strength, so that the integration of an anti-dazzle function is realized on the protective base material of the polaroid, and the thickness and the manufacturing cost of the polaroid are effectively controlled.

The invention discloses a multi-probe on-line real-time film thickness measuring method and a multi-probe on-line real-time film thickness measuring device. In combination with the multi-wavelength analysis capability and multi-channel parallel signal characteristics of the spectrum detection unit, different plane positions are adopted to correspond to different wavelengths or central wavelengths, the transmissivity of each wavelength is obtained, and the thickness of the corresponding position is obtained respectively; the precision and the accuracy of obtaining the thickness by a single wavelength are improved through a multi-mode cooperative signal analysis algorithm, so that the thicknesses of a plurality of different positions of the same thin film are accurately obtained at the same time through one spectrum detection unit, or the thicknesses of a plurality of different thin films are obtained; according to the invention, the problems of large absorption, transparent or non-transparent substrate compatibility, quick response, multi-branch and on-line real-time measurement of the film are successfully solved; the device and the method can be integrated in film growth equipment to carry out rapid and high-precision measurement on the film, so that closed-loop control on film production is realized, the iteration speed is increased, the yield of high-quality film production is greatly increased, and the film production cost is saved.

The invention relates to the technical field of fire coal control, and discloses a thermal power plant fly ash floating black online detection control method and system, and the method comprises the steps: 1, employing microwave, infrared and laser sensors for cooperative work, detecting carbon dielectric characteristics through microwave dust interference resistance, identifying thermal radiation difference through infrared, and analyzing particle distribution through laser; 2, on the basis of the detection requirements in the step 1, triple protection of air curtain barrier, ultrasonic cleaning and hydrophobic coating is designed, dust condensation is blocked, and it is ensured that the light transmittance of the sensor is larger than 90%; the invention provides a multi-mode sensing fusion-anti-interference current stabilization-closed loop optimization full-link solution for the industrial problem of signal distortion caused by optical window dew formation and dust deposition, airflow disturbance and environmental interference in fly ash floating black online detection. The light transmittance of the optical window is greater than 93% by combining triple protection of air curtain barrier, ultrasonic cavitation stripping and nano hydrophobic coating.

The invention discloses a photovoltaic POSS (polyhedral oligomeric silsesquioxane)-containing antireflection film coating liquid and a preparation method thereof, the coating liquid comprises the following raw materials in parts by weight: 80-100 parts of modified emulsion, 10-15 parts of modified graphene, 3-5 parts of sodium dodecyl benzene sulfonate, 1-3 parts of triethylene tetramine and 40-60 parts of deionized water, a modified additive in the coating liquid contains a polyhedral oligomeric silsesquioxane structure, the polyhedral oligomeric silsesquioxane structure can form uniformly-distributed nanopores and is matched with a two-dimensional honeycomb lattice structure in the graphene oxide, the surface roughness can be increased, the microstructure can scatter incident light and reduce specular reflection, so that the surface light transmittance is improved, and meanwhile, the modified additive molecule contains a fluoroalkyl structure, so that the surface light transmittance is improved. The fluoroalkane has a high refractive index, so that light reflection can be reduced, and the light transmittance is further improved.

The invention provides an acoustic vortex tunneling transmission method based on topology pairing metasurfaces, and the method comprises the steps: respectively arranging an absorption type metasurface and an emission type metasurface which have opposite topological charges at an inlet and an outlet of a tunneling channel, forming a pair of topology pair TPMs structures, and forming a vortex tunneling system together with a sub-wavelength channel; mode conversion between vortex waves and plane waves is achieved through multi-period fan-shaped grooves etched in the angular direction and the radial direction, and the transmission efficiency is enhanced through Fabry-Perot resonance in a sub-wavelength channel. When the length of the tunneling channel meets specific conditions, periodical adjustment of transmissivity and perfect tunneling can be achieved, and the tunneling structure has high OAM mode coupling and transmission efficiency while guaranteeing the compact structure and low material cost. The metasurface designed by the invention supports diversified acoustic vortex tunneling transmission along a straight line and a curve, and shows excellent flexibility and stability.

The invention discloses a far-infrared band optical thin film, a preparation method thereof and an optical element, and relates to a far-infrared band optical thin film technology, the far-infrared band optical thin film comprises a substrate, a front band-pass film system and a back cut-off film system; wherein the front band-pass film system is located on one side of the substrate, and the back cut-off film system is located on the other side of the substrate; the far infrared band optical thin film is prepared by alternately depositing lead telluride serving as a high-refractive-index thin film material and cadmium telluride serving as a low-refractive-index thin film material. The far infrared band optical thin film can cut off the band with the wavelength smaller than 4 microns, and the average transmittance is 0.23%; anti-reflection is carried out at the wave band of 5-50 microns; the moisture-resistant performance is excellent.

The invention discloses a metasurface array antenna housing, belongs to the technical field of electromagnetic wave regulation and control, and solves the problem of how to improve the transmittance and absorptivity of a metasurface to electromagnetic waves. Electromagnetic waves with different frequencies resonate on the first metasurface wave-absorbing layer and the second metasurface wave-absorbing layer respectively, so that the electromagnetic waves are absorbed by the lumped resistor. And the metasurface wave-transmitting layer re-radiates electromagnetic waves of a communication frequency band to enable the electromagnetic waves to penetrate through the metasurface unit, and meanwhile, the surface of the metasurface wave-transmitting layer can serve as a metal floor of the first metasurface wave-absorbing layer and the second metasurface wave-absorbing layer due to copper coating. The antenna can be widely used in the scenes of radar stealth, communication antenna integration, electromagnetic compatibility, wireless energy transmission and the like, and has a good application prospect.

The invention belongs to the technical field of radar wave-absorbing materials, and discloses a double-sided wave-absorbing broadband stealth composite material and a preparation method thereof. The broadband stealth composite material with the double-sided wave absorbing function comprises a non-metal-based composite material body and at least five metamaterial layers arranged in the thickness direction of the non-metal-based composite material body at intervals. The number of the metamaterial layers is an odd number, a middle metamaterial layer is arranged in the middle of the metamaterial layers in the thickness direction, and the rest metamaterial layers are symmetrically distributed on the two sides of the middle metamaterial layer; the metamaterial layer comprises conductive pattern units which are periodically arranged; the relative dielectric constant of the nonmetal-based composite material body is not greater than 10; the double-sided wave-absorbing broadband stealth composite material does not contain a metal reflecting layer. When electromagnetic waves with the frequency of 1-18 GHz vertically enter the material, the transmissivity of the material is small (smaller than-13 dB, namely smaller than 5%), and meanwhile the material has low reflectivity in a broadband. And the preparation method is simple to operate and easy to realize large-scale production.

The invention provides a control method and system of double-station transceiving integrated coupling equipment, and the method comprises the steps: obtaining defect coordinates and pinhole characteristic data of a target region, carrying out the analysis to obtain a transmittance abnormal region, generating an initial path of a spiral search algorithm according to the transmittance abnormal region, adjusting the search step size and angle, and obtaining a preliminary scanning boundary of a to-be-scanned region; analyzing the closeness degree of the scanning path and the defect, if the closeness degree is within a preset range, determining a power reduction condition according to the defect coordinate, adjusting the power, processing the light spot to obtain the size, and calculating a broadening coefficient; and extracting dynamic change data of the light spot size from the distributed power distribution, scanning the defect area to obtain a heat accumulation risk real-time distribution diagram, and dynamically adjusting the light spot size and power until the peak coupling power stability recovers to a preset range.

The invention discloses an intelligent interactive electrochromic projection glass control method and system, and the method comprises the steps: determining an interaction intention of a user, and calling a corresponding target projection parameter; querying a target transmittance value corresponding to the updated target projection parameter according to a preset transmittance projection mapping table; the light transmittance of the electrochromic glass is controlled to reach the target light transmittance value, and actual display parameters of the projection picture are collected; when the deviation between the actual display parameter and the updated target projection parameter exceeds a preset range, generating an RGB compensation coefficient according to the current environment illumination intensity value and the target transmittance value; and sending the RGB compensation coefficient to the projection unit to adjust the RGB three-color light output intensity of the projection light source. According to the method and the device, the environment illumination, the user interaction requirement and the voice instruction are sensed in real time, the glass transmittance is adaptively adjusted, and the RGB light source output is dynamically compensated, so that the consistent display effect of the projection picture is improved, and the conference cooperation difficulty is reduced.

The invention provides an all-dielectric film system structure with visible near-infrared high absorption, intermediate infrared selective radiation and microwave high transmission. The all-dielectric film system structure sequentially comprises a protection and antireflection layer, a visible near-infrared absorption and infrared selective radiation layer and a substrate layer from top to bottom, the protection and antireflection layer comprises a first dielectric layer and a second dielectric layer which are arranged up and down; the visible near-infrared absorption and infrared selective radiation layer comprises a plurality of third dielectric layers and fourth dielectric layers which are alternately stacked. According to the structure, high absorption can be achieved in the wave band of 380-1100 nm, high reflection (low radiation) can be kept in the wave bands of 3-5 m and 8-14 m, high transmissivity is achieved in the microwave wave band, certain radiation can be kept in the wave bands of 5-8 m and 14-25 m, and effective heat management is achieved. The all-dielectric film system structure also considers the stability of the material in a space environment, and is provided with a protection and antireflection layer, so that the potential application reliability of the film system is improved.

A transmission coating for a waveguide is formed with multiple layers. There are steps of a) determining a first coating parameter and a coating function for each layer -3000, b) forming the multiple

The invention belongs to the technical field of communication, and relates to a time-frequency multi-dimensional coding frequency hopping communication method and device based on Rydberg atoms. Comprising the following steps: exciting a cesium atom system from a ground state to an intermediate excitation state by utilizing probe light, and exciting the cesium atom system from the intermediate excitation state to a Rydberg state by utilizing coupling light; determining the resonant frequency and the non-resonant frequency of a carrier based on the energy level of the cesium atom system in the Rydberg state, and selecting the carrier of the resonant frequency or the non-resonant frequency according to the binary state of the baseband signal to perform time-frequency coding to generate a frequency hopping sequence; and radiating the frequency hopping sequence to a cesium atom system in a Rydberg state, and receiving a spectral signal of the transmissivity of the detection light passing through the cesium atom system so as to complete receiving of a baseband signal. According to the invention, frequency hopping sequence synchronization and signal modulation are not needed, the complexity of the system is reduced, and the method has the characteristic of tracking interference resistance.

The invention discloses an optical fiber bundle end face performance test method, device and equipment. The method comprises the steps of obtaining a target performance test requirement; analyzing the target performance test requirement to generate at least one target test parameter; generating a target test scheme corresponding to the at least one target test parameter, wherein the target test scheme comprises one or more combinations of a light source starting process, a light source brightness adjusting process, a light source position adjusting process, a target test board position adjusting process and a data processing process; and controlling the corresponding light source and / or the target test board according to the target test process, acquiring an end face image of the optical fiber bundle and / or an imaging image of the target test board, and then carrying out data processing to generate a performance test result. According to the invention, various performance detection of the optical fiber bundle can be fully automatically completed, errors caused by naked eye detection are avoided, and meanwhile, the brightness of each light source is adjustable, so that the optical fiber bundle detection device adapts to optical fiber bundles with different lengths and different transmittances.

The invention relates to an electrochromic window multi-scene control method, system and device based on indoor human body thermal comfort and a medium. The method comprises the steps that a perception data set is constructed; based on the sensing data set, performing multi-parameter coupling calculation of solar incidence azimuth deviation constraint and dynamic projection overlapping to obtain a direct radiation component, performing window space coupling analysis and double space compensation calculation to obtain a scattered radiation component, and performing fusion to obtain an individual thermal radiation influence value; determining a scene category based on the perception data set, and establishing a thermal radiation evaluation benchmark by adopting a mode matched with the scene category; and if the thermal radiation evaluation benchmark exceeds a preset threshold value, the required transmissivity of the window faces is obtained through a full-transmissivity radiation distribution method, the corresponding window faces are adjusted to the target transmission gradient according to the required transmissivity, and coupling control over the wind direction and / or power of the air conditioning system is selectively triggered. According to the invention, by constructing a multi-dimensional dynamic sensing system and an intelligent control framework, collaborative optimization of human body thermal comfort and building energy efficiency is realized.

The invention provides an all-dielectric film system structure with visible near-infrared low transmission vegetation simulation, intermediate infrared high reflection and microwave high transmission. The device sequentially comprises, from top to bottom, a visible near-infrared simulated vegetation layer which is composed of first to fourth dielectric layers and is configured to simulate vegetation reflection spectrum characteristics in a wave band of 380-2500 nm and has a low transmission characteristic; the intermediate infrared high-reflection layer is formed by alternately stacking a first dielectric layer and a third dielectric layer, and is configured to form high reflection in a wave band of 3-14 microns; and a substrate layer; the thickness of the whole film layer is far smaller than the microwave wavelength, so that the film system keeps high transmission in the microwave band. According to the invention, the amorphous InSb material with high loss characteristic in visible near-infrared light is introduced, so that the average transmissivity of 1500-2500 nm is reduced to 0.095 while high-precision simulation of the vegetation reflectivity spectrum is realized, thereby realizing simulation of low transmissivity of the wave band vegetation.

The invention provides high-reflectivity coated glass and a preparation method thereof. The high-reflectivity coated glass comprises a glass substrate, and an antioxidant dielectric layer, a reinforced dielectric layer, a metal layer and an outer dielectric layer which are sequentially arranged on the glass substrate, and the reinforced dielectric layer comprises a first dielectric layer and a second dielectric layer which are arranged in sequence. According to the coated glass provided by the invention, through specific dielectric layer structure combination, the reflectivity of the coated glass is improved, the transmittance is reduced, and the coated glass has good oxidation resistance, scratch resistance and heat-resistant processability, is simple in preparation process and has a wide application prospect.

The invention discloses a background spectrum accurate acquisition method for infrared remote measurement in a complex scene, and the method comprises the steps: carrying out the division of sky and ground object backgrounds for an input background image, and selecting different radiation spectrum generation modes based on a division result; if yes, sky radiation spectrum extraction is carried out based on an MODTRAN radiation transfer model; if the background is judged to be a single ground object background, performing background spectrum extraction by adopting ELM-EMD (Extreme Learning Mode-Empirical Mode Decomposition) which is extracted in real time based on a measurement spectrum and changes slowly at low frequency; and if the background is not single, fusion of the two spectrum extraction modes is adopted. The method has the advantages that the background classification method with the visible image as the reference is adopted, the difference of infrared radiation characteristics of the sky background and the ground feature background is analyzed, different spectrum extraction modes are selected according to the difference, and therefore accurate obtaining of the target smoke plume transmittance spectrum is achieved.

The invention provides unequal-thickness ultra-thin glass and a preparation method and application thereof.The unequal-thickness ultra-thin glass adopts a specific formula calculated according to the percentage of oxides, the ratio of (Al2O3 + Na2O + K2O + MgO) / (B2O3 + SiO2) is controlled to range from 52% to 68% on the basis that ZnO, P2O5 and SrO are not added by controlling the components adopted in the formula and the matching relation among the components, and the unequal-thickness ultra-thin glass is obtained. The maximum thickness of the unequal-thickness ultra-thin glass is controlled, so that the light transmittance of the unequal-thickness ultra-thin glass can reach 91%, the fracture toughness of the unequal-thickness ultra-thin glass can be larger than or equal to 0.76 MPa.m < 1 / 2 >, the Vickers hardness of the unequal-thickness ultra-thin glass can reach 573 kgf / mm < 2 > or above, the average single drop pen impact height of a non-bending area of the unequal-thickness ultra-thin glass can reach 100 mm or above, and the unequal-thickness ultra-thin glass has good bending performance, impact resistance and drop resistance.

The present application relates to the technical field of pyrotechnic impact equipment, and more particularly to a pyrotechnic impact isolation method using honeycomb porous materials. The present application uses the complexity of the transmission path of honeycomb porous materials to construct the satellite-rocket interface, increase the stress wave impedance of the satellite-rocket interface, reduce the stress wave transmissivity, and achieve the isolation of the pyrotechnic impact response. The present application uses the explicit finite element method to model and analyze the transient dynamics of the relevant structure, and studies the pyrotechnic impact isolation characteristics of honeycomb porous materials. The present application can effectively reflect the stress wave, dissipate the impact energy, achieve the effective isolation and suppression of the pyrotechnic impact, and improve the method of traditional satellite-rocket connection.

The invention relates to a PVB (polyvinyl butyral) composite film as well as a preparation method and application thereof. The PVB composite film is prepared from the following raw materials in parts by weight: 100 parts of PVB resin, 1-10 parts of nano praseodymium oxide, 1-10 parts of a dispersing agent, 0.01-1 part of a coupling agent and 20-50 parts of a plasticizer. The nano praseodymium oxide is added into the PVB resin, and the infrared absorption band of the PVB composite film is optimized by utilizing the infrared absorption performance, chemical stability and heat-resistant stability of the nano praseodymium oxide, so that infrared radiation can be efficiently blocked, and the excellent heat insulation effect and long-term use stability of the PVB composite film are realized. Furthermore, the nano praseodymium oxide is modified by a coupling agent, so that the dispersion uniformity of the nano praseodymium oxide in the PVB resin and the interface bonding force of the nano praseodymium oxide and the PVB resin are improved, the light transmittance loss of the PVB composite film is reduced, and the mechanical property and the heat insulation property of the composite film are improved.

The invention discloses a distributed photovoltaic data processing method and system, and relates to the technical field of data processing, and the method comprises the steps: obtaining historical data generated during photovoltaic use through a monitoring point, building an influence analysis model based on a deep neural network model, carrying out the theoretical influence value prediction, and carrying out the calculation of an object distribution information graph through an object distribution information graph. Carrying out object numerical calculation of photovoltaic external influence; according to the method, data scanning is performed on the surface of the photovoltaic panel, the influence analysis model is established for external influence factors, the light transmittance is predicted according to the influence analysis model, and theoretical light transmittance of different dust thicknesses is generated, so that the influence of dust on light transmission of the photovoltaic panel can be accurately measured; and meanwhile, according to the pre-estimated value of the constructed influence analysis model, in combination with thermal imaging, re-analysis and comparison are performed, and a compensation coefficient is calculated according to light transmittance comparison to correct the electric quantity, so that the electric quantity calculation and pre-estimation are more practical, more accurate electric energy production is obtained, and reasonable use of energy data generated by distributed photovoltaic power generation is facilitated.

Disclosed are a micro-display chip and a preparation method thereof. The micro-display chip includes: a self-luminescence layer, a wavelength conversion layer, and a first transmitting-and-reflecting layer and / or a second transmitting-and-reflecting layer; the first transmitting-and-reflecting layer is disposed between the self-luminescence layer and the wavelength conversion layer; the second transmitting-and-reflecting layer is disposed on another surface of the wavelength conversion layer; the first transmitting-and-reflecting layer has low reflectivity and high transmissivity for the first color light and high reflectivity and low transmissivity for the second color light, and the second transmitting-and-reflecting layer has high reflectivity and low transmissivity for the first color light and low reflectivity and high transmissivity for the second color light. The micro-display chip of the present disclosure can effectively improve the absorbance and color purity of conversion light, thereby obtaining a brighter and purer conversion spectrum.

The invention relates to the field of optical display and material engineering, in particular to a silica gel integrated optical film with a 3D light splitting function and a manufacturing method of the silica gel integrated optical film. A silica gel integrated optical film with a 3D light splitting function comprises a transparent optical base material and a microstructure layer, and the microstructure layer is combined on the surface of the transparent optical base material in an integrated forming mode. And the microstructure layer is an anhydrous silica gel-resin composite material obtained by combining organic silica gel with low refractive index and resin with high refractive index through an anhydrous chemical reaction system. The optical film obtained in the invention has excellent interface bonding stability and long-term reliability, the overall thickness of the optical film is small, the optical loss is reduced, the light transmittance is higher, and the overall transmittance can reach 93% or above. And the manufacturing process integration degree and the mold repeated utilization rate are high, the industrial batch production requirement can be met, and the excellent industrial application prospect is achieved.

The invention discloses a multi-layer flexible radiation cooling composite diaphragm which structurally comprises a flexible base layer film, and a SiO2 inorganic coating, a first layer of polyvinylidene fluoride (PVDF), a nano-silver layer deposited by magnetron sputtering and a second layer of PVDF which are sequentially coated to form a base layer film / SiO2 / PVDF / Ag / PVDF sandwich structure. The SiO2 layer is prepared through a sol-gel method, the surface roughness is smaller than 2 nm, and the visible light transmittance is larger than 95%; the thickness of the silver layer is 50 + / -5 nm, and the total thickness of SiO2 / PVDF / Ag does not exceed 150 nm. According to the composite diaphragm, ultraviolet reflection, visible light high transmission (greater than 92%) and near-infrared high reflection (greater than 88%) are realized through spectrum selective regulation and control, and meanwhile, SiO2 and PVDF synergistically enhance the infrared emissivity of an atmospheric window wave band (8-13 [mu] m). The flexible PET base material is combined with the PVDF interlayer design to restrain silver layer oxidation and interface stripping, the recovery rate is larger than 95% after 1000 times of bending circulation, and the NIR reflectivity attenuation is smaller than or equal to 5%. The composite diaphragm disclosed by the invention has the advantages of high light transmission, efficient cooling, excellent flexibility and long-term stability, and is suitable for flexible scenes such as agricultural greenhouses and the like.

An electronic device may include a display and an optical sensor formed underneath the display. The display may have both a full pixel density region and a high-transmittance region that overlaps the optical sensor. To increase the transmittance of light through the high-transmittance region of the display, emissive sub-pixels in the high-transmittance region may be shorted together. Each emissive sub-pixel may be shorted to an emissive sub-pixel of the same color. The emissive sub-pixels in the high-transmittance region of the display may have the same layout but smaller sizes relative to the full pixel density region of the display. The thin-film transistor sub-pixels in the high-transmittance region may be consolidated horizontally and / or vertically to produce larger continuous high-transmittance areas.

The invention provides a semiconductor epitaxial growth parameter inversion method, a semiconductor epitaxial growth parameter inversion system, a semiconductor epitaxial growth parameter detection device and a related product, and relates to the technical field of semiconductor detection. The gas phase transmittance of a detection light path is further obtained, quantitative compensation is carried out on the actually measured reflection spectrum in the semiconductor epitaxial growth process, the compensated target reflection spectrum is closer to the real optical response of a semiconductor epitaxial film, and therefore spectral shape distortion and system errors caused by gas phase absorption superposition are effectively weakened. And the accuracy and the stability of the inverted growth parameters are obviously improved. Furthermore, the quantitative compensation value can be adaptively updated according to the fluctuation of the working condition, the inversion deviation introduced by the drift of the working condition is reduced, the consistency and comparability of the process are improved, and more reliable end point control and parameter closed-loop optimization can be conveniently realized.