3404 results about "Blue light" patented technology

The invention relates to the technical field of semiconductors, and particularly discloses a multiband LED chip and a preparation method thereof, and a white light LED light source, the LED chip comprises a light-emitting layer, and the light-emitting layer comprises a first cyan light multi-quantum well layer, a second long-wave blue light multi-quantum well layer, a third short-wave blue light multi-quantum well layer and a fourth purple light multi-quantum well layer which are sequentially stacked in the epitaxial direction; the first cyan light multi-quantum well layer, the second long-wave blue light multi-quantum well layer, the third short-wave blue light multi-quantum well layer and the fourth purple light multi-quantum well layer are each of a periodic structure formed by alternately stacking well layers and barrier layers, and the light-emitting wavelengths of the first cyan light multi-quantum well layer, the second long-wave blue light multi-quantum well layer, the third short-wave blue light multi-quantum well layer and the fourth purple light multi-quantum well layer are sequentially decreased. And the forbidden band widths of the barrier layers are sequentially decreased. According to the LED chip, the overall excitation efficiency can be effectively improved, and the output full-spectrum white light LED light source is higher in color rendering index, better in stability, less in damage to human eyes and high in light emitting efficiency.

The invention relates to the technical field of image processing, in particular to a road area intelligent extraction system for unmanned aerial vehicle aerial images, and the system comprises an image noise filtering module which analyzes and inputs frequency domain information of the unmanned aerial vehicle aerial images, recognizes a target noise mode, and filters the unmanned aerial vehicle aerial images. According to the method, frequency domain noise analysis and notch filtering are combined, the sharpness of the road edge is reserved, meanwhile, high-frequency noise and periodic interference are restrained, and the visibility of a low-contrast road area is improved; local pixel spectrum dispersion calculation is introduced and is dynamically fused with morphological parameters, and direction consistency and length-width ratio constraints are combined, so that the connectivity perception capability of the fragmented non-paved road is enhanced, and the fracture misjudgment under the form-changeable terrain is reduced; a normalized vegetation index and multi-band reflectivity are combined for modeling, water reflection interference is eliminated through a blue light band standard deviation, and a space mask of a non-road surface feature interference area is constructed.

Disclosed is a system for providing a sleep healthcare service using brainwave entrainment and autonomous nervous system control, and the system including: a user terminal configured to set a bedtime and a wake-up time, at the bedtime, output a sleep-inducing breathing method for enhancing the parasympathetic nervous system, while emitting light of non-melatonin-suppressing wavelengths, and at the wake-up time, insert and output an Alpha-Band or Beta-Band flicker for brainwave synchronization of alpha or beta waves, and output blue light to induce arousal; and a sleep healthcare server.

The invention discloses a blue light-emitting main body composition, and an organic electroluminescent device, a display panel and a display device comprising the same. The blue light-emitting main body composition comprises a first component and a second component, the structural general formula of the first component is shown as a formula I, and the structural general formula of the second component is shown as a formula II; ar1 is selected from deuterated or unsubstituted phenyl or naphthyl; l is selected from deuterated or non-deuterated phenyl; and Ar22 is a deuterated structure of Ar21. In the invention, the compound in the formula I containing the deuterated anthracene nucleus and the non-deuterated Ar21 group is combined with the compound in the formula II containing the non-deuterated anthracene nucleus and the deuterated Ar22 group in a differentiated manner, so that the carrier balance of the organic electroluminescent device can be further adjusted, the efficiency of the organic electroluminescent device is improved, and the service life of the organic electroluminescent device is prolonged. # imgabs0 #

A display device capable of performing display at high luminance is provided. A first layer containing a first light-emitting material emitting blue light is formed into an island shape over a first pixel electrode, and then a second layer containing a second light-emitting material emitting light having a longer wavelength than blue light is formed into an island shape over a second pixel electrode. After that, an insulating layer overlapping with a region interposed between the first pixel electrode and the second pixel electrode is formed, and a common electrode is formed to cover the first layer, the second layer, and the insulating layer.

The invention relates to the technical field of display, and particularly discloses an intelligent self-adaptive eye protection display system which sequentially comprises a content analysis module, an ambient light detection module, an eye protection parameter calculation module, a display parameter adjustment module and a user feedback module. The system identifies the screen content type and the dynamic degree in real time, synchronously detects the ambient light intensity and the color temperature, obtains the optimal combination of the blue light proportion, the brightness, the contrast ratio, the color temperature and the sharpness through a multi-target optimization model, and smoothly adjusts the display through driving; a user can score, finely adjust and mark a scene, and feedback data enters a self-learning engine to iteratively update a parameter weight so as to form a content-environment-user closed loop. The system can significantly reduce blue light harm and improve visual comfort without external hardware.

The invention discloses a 7-series aluminum alloy composite light source laser welding method, which is characterized in that stitch welding is carried out on double-layer 7-series aluminum alloy test pieces by using a composite light beam formed by a near-infrared laser beam and a blue laser beam, the thickness of the upper-layer 7-series aluminum alloy test piece is 1-2mm, and the thickness of the lower-layer 7-series aluminum alloy test piece is 2mm; before welding, removing an oxide layer on the surface of the aluminum alloy, then pressing up and down through a jig, and setting welding parameters and paths; during welding, light spots of a near-infrared laser beam and a blue laser beam are concentric and emitted at the same time, the two laser beams are coupled and focused to a swing welding head, and stitch welding is carried out according to set welding parameters and paths; the light spot diameter of the blue light laser beam is larger than that of the near-infrared laser beam. Near-infrared light and blue light form coaxial composite light spots and emit light at the same time, stitch welding is conducted on the double-layer aluminum alloy test piece in combination with the swing welding head, and the stitch welding device has the advantages of being high in welding efficiency, good in air hole state and few in splashing and cracks.

The invention discloses a holographic projection system based on an AI large model. According to the invention, through the nano-scale optical coating and environment self-adaptive adjustment technology, harmful blue light is effectively filtered, environment light parameters are dynamically matched, the problem that eyes are injured by a common screen is solved, and the method is especially suitable for long-time learning scenes of children. The holographic projection core module adopts a naked eye 3D light field technology, presents complex models such as dinosaur, marine organisms and the like in a three-dimensional suspension manner through high-fidelity color restoration and dynamic depth-of-field adjustment capability, and is matched with gesture touch control and voice instructions of multi-mode interaction hardware, so that a user can directly touch a virtual object, and the real-time performance of the virtual object is improved. Experience upgrading from plane observation to space interaction is achieved, and knowledge such as English learning and animal and plant cognition is converted into interactive games and story narration through virtual teacher images and scene scripts. The autistic children can complete social dialogue training under the guidance of the virtual role, the system analyzes emotion fluctuation in real time and adjusts a guidance strategy, and social fear is gradually eliminated.

An electronic candle with a highly simulated flame effect, including a housing having a top wall and a cylindrical peripheral wall, where the top wall has a through hole in the center; a flame head, passing upward through the through hole and including a candle flame-like luminous body and a simulated cotton core column, where the luminous body including an LED lamp bead and a light guide cup at the bottom, the LED lamp bead and the light guide cup are each a misty colloid component, a transmittance of the LED lamp bead is higher than a transmittance of the light guide cup, a first light-emitting chip and a second light-emitting chip that separately change in light and dark are provided in the LED lamp bead vertically, the first light-emitting chip located above emits warm white light upward, and the second light-emitting chip located below emits blue light downward.

The invention relates to a method for improving the content and molecular weight of aloe polysaccharide in aloe, which comprises the following steps of: firstly, removing blank parts at the tip and the tail of the aloe, retaining aloe leaves, and cultivating by using pure water; peeling and pulping aloe leaves to obtain aloe gel; placing the obtained aloe gel in an illumination reaction tank; a stirrer is arranged at a tank opening of the illumination reaction tank; a color-adjustable LED lamp is placed above the illumination reaction tank, and blue light, red light and dark light alternate illumination treatment is carried out on the aloe gel. According to the method, the content and molecular weight of the aloe polysaccharide in the aloe barbadensis gel are successfully improved by utilizing an external field such as a red and blue alternating light field, in addition, a natural system can be simulated by applying proper illumination adjustment, and the polymerization reaction is controlled by the external field to generate biomacromolecules (such as polysaccharide). The high molecular weight and content of the aloe polysaccharide are crucial to the biological activity of the aloe polysaccharide, so that the method is of great significance to the development of the medicinal value of the aloe polysaccharide product.

The invention discloses a cultivation method for promoting rapid growth and development of spring wheat, and belongs to the technical field of wheat breeding and cultivation. The cultivation method comprises the following steps: 1, seed pretreatment; 2, field planting and soil culture: transplanting wheat seeds with white buds into a seedling culture hole tray, transferring the seedling culture hole tray into a culture room with a long photoperiod, culturing until the wheat seeds are mature, and harvesting; lED light is adopted in the culture room for illumination; the LED light is blue light, white light or a mixture of red light and blue light according to a light quantum ratio of 3: 1. The method has the beneficial effects that the condition combination of regulating and controlling the light period, the light quality and the light intensity is provided. Through the combination of fixed and widely applicable illumination conditions, the method significantly shortens the growth cycle of the spring wheat. The method has the beneficial effects that the time from seed germination to mature harvesting of the spring wheat is generally 50-60 days, so that 6-7 generations of spring wheat can be harvested in one year. The wheat growth cycle is shortened, the breeding efficiency is remarkably improved, and a solid technical foundation is laid for improvement and cultivation of chassis varieties.

The invention relates to an intelligent sleep adjusting method and system based on closed-loop acousto-optic brain wave entrainment, electroencephalogram (EEG) signals are collected and preprocessed in real time through a wireless dry electrode, and high-precision sleep staging is achieved through a deep learning model. The system adopts a fuzzy PID (Proportion Integration Differentiation) controller to dynamically adjust acousto-optic synergistic stimulation: an acoustic module generates binaural beat signals, an optical module outputs blue light (470nm) and amber light (590nm) pulses, and the brain wave entrainment efficiency is enhanced through phase synchronization (the phase difference is less than or equal to 10 degrees) and golden section frequency coupling (fL is equal to 1.618 fA). Parameters are updated every 30 seconds through closed-loop feedback, the sound pressure level (30-50 dB) and the light intensity (10-100 lux) are adjusted according to the Weber-Fechner law, and the response delay is lt; the time is 200 ms. A three-level safety mechanism monitors gamma wave abnormity, epilepsy sample discharge and impedance overrun in real time, and triggers graded protection (alarming, cutting off light stimulation and shutdown). Clinical verifications show that the entrainment success rates of the delta wave and the theta wave respectively reach 71% and 68%, the sleep improvement effect is good, and a safe and efficient intervention scheme is provided for sleep disorders.

The invention provides a visual fatigue relieving method based on ambient light self-adaption and an AI algorithm, and relates to the technical field of visual health protection. The visual fatigue relieving method based on ambient light self-adaption and the AI algorithm comprises the following specific steps: S1, data acquisition: acquiring a user eye image sequence in real time through a high-frame-rate camera; and S2, parameter extraction: when the user uses the eye for the first time, testing the eyes by combining the adjustable light source with ambient light. Multi-dimensional features (such as eyeball movement, blinking mode, pupil function and the like) of eyes are collected in real time through a high-frame-rate camera, an individualized base line is established and a fatigue rate value is dynamically calculated in combination with data of an ambient light sensor, and conversion from passive response to active prevention is realized. Through a hierarchical intervention strategy (such as brightness adjustment, blue light control and forced rest), the visual load is remarkably reduced, the intervention efficiency is improved, and the problem of insufficient adjustment hysteresis and individual adaptability in the prior art is solved.

The invention discloses a micron-resolution boron nitride neutron scintillation screen and a preparation method thereof, and the preparation method comprises the following steps: taking an inch-level sapphire single crystal as a substrate, and selecting an aluminum polar surface as a growth surface; fixing the substrate by using a graphite clamp, putting the substrate and the chemical vapor deposition furnace into a chemical vapor deposition furnace, vacuumizing, and heating the furnace body to a reaction temperature by using a graphite heater; then raw material gas and carrier gas N2 are introduced into the furnace, meanwhile, the graphite clamp and the graphite heater are decomposed at high temperature so as to provide a proper amount of carbon source, and the gas is mixed and reacts to deposit a crystalline boron nitride film on the substrate; and soaking with alcohol to separate the boron nitride film from the substrate, cutting, and fixing on an aluminum plate to prepare the neutron scintillation screen. The boron nitride film is compact and transparent, shows a strong blue light emission characteristic due to carbon defects, and can be used as a micron-resolution neutron scintillation screen. The micron-resolution boron nitride neutron scintillation screen is successfully realized, and the potential of the micron-resolution boron nitride neutron scintillation screen in the aspect of high-resolution neutron imaging is proved.

The invention provides a chip lamp bead and a lamp, and relates to the technical field of lamp beads, the chip lamp bead comprises a packaging body and a lamp bead body packaged in the packaging body; wherein the lamp bead body comprises a substrate, and a first luminous body, a second luminous body and a control chip which are arranged on the substrate. The white light illuminant and the illuminant of the preset color system are integrated in one lamp bead, different lamp beads and different colors of the lamp beads can be controlled in a unified mode through the control chip, and the functionality and flexibility of the illumination and decoration lamp system are improved. On the basis of the white LED, the color temperature adjustment of the preset color system from the warm color tone to the cold color tone can be realized by adjusting the proportion of white LEDs (such as warm white and cold white) with different color temperatures. Moreover, the color of single-color blue light is purer, the color of single-color white light or warm white light is more consistent, and the yield can be increased to 99% or above.

The invention relates to the technical field of lenses, in particular to a film for vision correction and a lens, and the film for vision correction is deposited on the surface of a lens substrate and comprises a refractive index matching layer, a refraction compensation layer, an out-of-focus prevention and control layer, a blue light interference prevention layer and a super-hydrophobic wear-resistant layer which are sequentially arranged from bottom to top; the refraction compensation layer covers in a full-aperture mode and forms an optical area used for refraction correction in a central area, and the film thickness of the refraction compensation layer is decreased progressively from the center to the edge; the defocusing prevention and control layer covers the peripheral annular area of the optical area and comprises an annular transition belt and a main body defocusing area extending outwards from the outer edge of the annular transition belt; the out-of-focus prevention and control layer is composed of a ZrO2-epoxy resin compound; the inner film thickness of the annular transition zone is linearly increased from inside to outside, the concentration of the ZrO2 nanoparticles is induced to gradually change through a radial electric field, a refractive index radial gradient is formed, the concentration of the ZrO2 nanoparticles in the main body defocusing zone is constant, and peripheral defocusing is maintained through secondary increase of the film thickness.

The invention relates to the technical field of PET optical films, and particularly discloses a high-light-transmittance blue-light-resistant PET optical film and a preparation method thereof, and the high-light-transmittance blue-light-resistant PET optical film is prepared from the following raw materials by weight: 70-85% of a polyethylene glycol terephthalate resin matrix; 3%-8% of a benzotriazole anti-blue light agent; 5%-12% of a silicon dioxide nano anti-reflection agent; 2%-6% of nano zinc oxide or nano cerium oxide; 1.5% to 4% of a polycarbodiimide cross-linking agent; 0.5%-3% of an anti-blocking agent; 0.4%-1.5% of an antioxidant; 0.4%-1.0% of an ultraviolet light absorber; the balance is a processing aid; the preparation method comprises the following steps: S1, pretreating the raw materials; s2, a mixing procedure; and S3, extruding and coating. The PET optical film provided by the invention has high optical properties of high light transmittance, blue light resistance and low haze, and has the advantages of high light transmittance and blue light blocking rate of the optical film and improvement of the application range of the optical film.

The invention relates to the technical field of semiconductor devices, in particular to a multiband light-emitting diode epitaxial structure and a preparation method thereof. The multiband light-emitting diode epitaxial structure sequentially comprises a substrate, a buffer layer, an N-type semiconductor layer, a low-temperature stress release layer, a multi-quantum well light-emitting layer, an electron blocking layer and a P-type semiconductor layer from bottom to top, the multi-quantum well light-emitting layer comprises four sub-layers, namely a first long-wave cyan light multi-quantum well layer, a second short-wave cyan light multi-quantum well layer, a third long-wave blue light multi-quantum well layer and a fourth short-wave blue light multi-quantum well layer which are sequentially stacked and grown from bottom to top, and the light-emitting wavelengths are sequentially decreased. Meanwhile, by combining the design of the sub-layers of the multiple quantum well light-emitting layers and through the synergistic effect of exciting light of all wave bands, the overall excitation efficiency can be improved, full-spectrum white light is output, the full-spectrum white light is closer to sunlight, the light-emitting efficiency is high, the color rendering property is good, the stability is better, and harm to human eyes is small.

The utility model discloses an LED mobile phone eye protection lamp, which comprises a shell and a mounting frame, a main control board and a rechargeable battery are arranged in the shell, end covers are arranged at two ends of the shell, a charging jack is arranged on the end cover at one side and electrically connected with the rechargeable battery, and an on-off key is arranged on the end cover at the other side and connected with the main control board; an LED lamp is further arranged on one side, facing the mobile phone screen, of the main control board, and a transparent photomask is installed at the corresponding position of the shell; and the LED lamp illuminates towards one side of the mobile phone screen through the transparent light cover. According to the utility model, the eye-protection lamp for auxiliary illumination is installed on the mobile phone, and the illumination light emitted by the eye-protection lamp is overlapped with the blue light of the mobile phone screen, thereby effectively reducing the harm of the blue light, reducing visual fatigue, protecting eyesight, being especially suitable for people who use the mobile phone for a long time, and improving the eye health.

The invention relates to the technical field of LED display, and discloses an LED display color calibration method, device and system. The method comprises the following steps: applying a reverse test voltage to LED pixels in an LED display panel in a display frame blanking period, and calculating a real-time junction temperature value and a service life state value of each LED pixel; discrete phase coding reconstruction is carried out on the original display driving signal to obtain a temperature self-adaptive driving compensation signal; a temperature-sensitive fluorescent composite material layer is arranged on a substrate layer of an LED display panel, and the temperature-sensitive fluorescent composite material layer is activated through blue light components emitted by LED pixels to obtain an optical passive compensation spectrum; dividing the LED display panel into a plurality of independent control areas and generating an inter-area cooperative compensation parameter set; and constructing a pixel-level point diffusion compensation function and performing spatial domain dynamic compensation to obtain an LED display output image after color calibration. According to the invention, the problem of non-uniform area caused by manufacturing batch difference of a large-size display screen is effectively solved.

According to the intelligent awakening system and method based on sleep monitoring, on the basis of wearable sleep monitoring equipment, by analyzing the sleep stage of a user in real time and combining strategies such as blue light awakening and vibration awakening, the user is awakened at a proper time, so that interference to sleep is reduced, and the sleep monitoring effect is improved. And the comfort of the awakening process and the mental state of the user are improved. Multi-channel physiological signals such as electroencephalogram signals, electro-oculogram signals and mandibular electromyographic signals are used, the advanced signal processing technology is combined, the sleep stage of a user can be accurately analyzed in real time, awakening is carried out at a proper time point, especially sudden awakening is avoided in the deep sleep (N3) stage and the rapid eye movement sleep (REM) stage, and the sleep state of the user is improved. And the sleep inertia is effectively reduced.

The invention discloses an anthracene compound and an organic electroluminescent device. The compound has a structure as shown in a formula (1): # imgabs0 #, a ring A is selected from a formula (2) or a formula (3): # imgabs1 #, and the compound can be used as a blue light host material in an OLED luminescent device, has the advantages of low driving voltage, high luminous efficiency, long device life and the like, and has the potential of being applied to the AMOLED industry.

Sleep-aiding eyewear that prevents light which inhibits melatonin production from reaching the eye is described. The eyewear that is the object of the present disclosure has improved visibility over other methods of cutting off melatonin-inhibiting wavelengths of light, which enables the user to perform tasks, such as reading and typing, uninhibited. This is achieved in some embodiments using a Bragg grating comprising multiple layers of alternating reflective index material as a surface coating on the lens. This may be combined with lens-tinting, or antireflective coatings, in the eyewear. Furthermore, transition lenses which block melatonin-shifting light when there is a suitable external stimulus, such as blue light from a light emitting diode, are described. The presently described filters are also useful for electronic displays and functional light-transmitting materials.

The utility model relates to an LCOS (Liquid Crystal On Silicon) projection device, which comprises a light source module capable of emitting red, green and blue light beams, a polarization filter and an imaging lens which are sequentially arranged along a projection light path, an LCOS chip capable of modulating the polarization state of incident light is arranged on a projection light path between the polarization filter and the imaging lens, and an imaging lens group capable of imaging the incident light onto the LCOS chip is arranged on a projection light path between the light source module and the polarization filter. And a polarization layer capable of transmitting P polarized light and reflecting S polarized light is arranged on the polarization filter. Compared with a polarizing prism applied to a traditional LCOS projection light path, the LCOS projection light path has the advantages that through the arrangement of the polarizing filter and the polarizing layer which is arranged on the polarizing filter and can transmit P polarized light and reflect S polarized light, the LCOS projection light path has higher polarization efficiency, stray light is reduced, and optical efficiency is improved.

The invention relates to the technical field of medical instruments, in particular to an intelligent temperature control phototherapy swaddle which comprises a swaddle body. The transparent elastic air bag is arranged on the inner wall of the swaddle body; the first sensor is arranged on the transparent elastic air bag; the blue light emitting assembly is arranged on the inner wall of the swaddle body; the electric control box is connected with the swaddling clothes body and comprises a box body; the conveying pump assembly, the heating assembly, the control assembly and the power supply assembly are arranged in the box body; the conveying pump assembly is connected with the transparent elastic air bag and the heating assembly, the conveying pump assembly is used for conveying a medium heated in the heating assembly into the transparent elastic air bag, and through back-and-forth contraction of the transparent elastic air bag, a newborn can be massaged while the medium heated in the heating assembly is heated by the transparent elastic air bag. External dry air can be sucked into the swaddling clothes body, so that the sweating frequency of the newborn baby is reduced, the body is kept dry and comfortable, and the comfort degree is improved.

The invention discloses a coated reflecting film based on an organic fluorescent coating and a preparation method of the coated reflecting film, tetra (4-aminophenyl) methane and tetra-(4-formyl-(1, 1-biphenyl)) ethylene are used as reaction monomers to prepare a novel topological structure [4 + 4] COF (3D-TPE-COF) with a tetraphenylethylene (TPE) unit, and the novel topological structure [4 + 4] COF (3D-TPE-COF) is used for preparing the reflective film based on the organic fluorescent coating. The covalent organic framework material 3D-TPE-COF is added into coating liquid as a fluorescent material to prepare a coating reflecting film based on an organic fluorescent coating, and the obtained reflecting film can convert high-energy blue light, so that the brightness of light emitted by a backlight module is higher and closer to white; meanwhile, the 3D-TPE-COF fluorescent material and the polymer particles can form hydrogen bonds in the coating liquid to avoid aggregation of the polymer particles, so that the wear resistance and scratch resistance of the coating reflecting film are improved.

The invention relates to a method for synthesizing 1, 2-allene ketone, and discloses a method for synthesizing 1, 2-allene ketone by taking eneyne, 1, 4-dihydropyridine and benzoyl fluoride as substrates, 2, 4, 5, 6-tetra (diphenylamino)-isophthalonitrile as a photocatalyst, 5, 6, 7, 8-tetrahydro-3-(2, 6-diisopropyl phenyl)-4H-cycloheptyl thiazole perchlorate as N-heterocyclic carbene, cesium carbonate as alkali and acetonitrile as a solvent through a one-pot method. And reacting at room temperature for 4 hours under visible light of 12W and 460nm LED blue light to obtain allene ketone. The reaction conditions are mild, and the method has good functional group tolerance.

The invention discloses a method and a device for quantitatively detecting active microorganisms in a solid / semi-solid sample, and belongs to the field of microorganism detection. According to the method, detection is carried out based on a PMA-qPCR method, influence factors of the stability of an experimental result are analyzed, and a stability analysis model is constructed; the stability analysis model is shown in the specification; wherein S is a comprehensive stability score, and the higher the S value is, the better the stability of the experiment result is; the weight coefficient is the weight coefficient of the ith influence factor; the performance function is the performance function of the ith influence factor; the influence factors comprise sample suspension dilution ratio, PMA dye concentration, dye incubation time, blue light irradiation time, blue light irradiation area and impurity particle size. The method can be used for simultaneously detecting the activity of various microorganisms in a solid / semi-solid sample, the accuracy is high, the experimental period is short, and the quantitative result has important guiding significance.

The embodiment of the invention provides a backlight module and a display device. The backlight module comprises a light-emitting substrate and a plurality of light-emitting elements, wherein the light-emitting substrate comprises a substrate and a plurality of light-emitting elements arranged on the substrate; the bearing structure is arranged around the light-emitting area of the light-emitting substrate; the light uniformizing plate is arranged on one side of the bearing structure in the light emitting direction of the light emitting substrate, a preset distance is arranged between the light uniformizing plate and the light emitting substrate, and the bearing structure is provided with a supporting end face facing the light uniformizing plate; the filling material belt is located on the supporting end face and arranged in the extending direction of the supporting end face, and the light uniformizing plate is arranged on the side, away from the bearing structure, of the filling material belt in a pressed mode, so that the filling material belt is extruded and fills a gap between the light uniformizing plate and the supporting end face. According to the technical scheme, when the light-emitting element emits blue light, the problem that the edge of a display picture is blued can be solved.

The present invention discloses a jaundice detection method and system based on visual recognition, and the detection method comprises: obtaining first image data of a person to be detected under white light shooting illumination, and obtaining second image data of the person to be detected under blue light shooting illumination; performing image color extraction on the first image data based on HSV color space to obtain color data of the first image data; performing comparison on the color data of the first image data with the image chromaticity data of a standard image to obtain first comparison data; extracting the proportion of green component and yellow component from the second image data based on Lab color space recognition, and obtaining second comparison data based on shooting parameter settings; obtaining an image yellow chromaticity change evaluation value of the person to be detected based on the first comparison data and the second comparison data, and outputting a detection result based on the evaluation value. By performing image analysis on the yellow component change value, the image detection accuracy is improved, thereby improving the evaluation reliability of the occurrence of jaundice symptoms.