73 results about "Dark state" patented technology

The invention discloses a display light color detection system, and relates to the technical field of low-brightness display light color detection, and the system comprises a dynamic modulation module which is configured to carry out the high-frequency pulse modulation of a dark-state signal of a detection object, and is used for enabling the dark-state signal to carry a modulation component of a characteristic frequency; the time sequence division acquisition unit comprises a high-speed optical shutter assembly and a detector, and the high-speed optical shutter assembly synchronously switches the on-off state of an optical path according to the characteristic frequency; according to the invention, through high-frequency pulse modulation of dark state signals, time-sequence-divided acquisition of noise and signals and time-frequency domain combined decoupling, traditional hardware limitation is broken through, ultra-low brightness signals and stray light interference are effectively separated, 0.01 cd / m < 2 >-level high-precision detection is realized, the detection efficiency is improved by more than 7 times, and the misjudgment rate is significantly reduced. The problems of missing detection of a novel display technology and the yield of an automatic production line are solved, and an active coding-time sequence calibration-cross-domain cooperation framework has remarkable innovativeness and industrial value.

The invention discloses an indicator light on-off identification method and system based on coordination of large and small models and a medium, and the technical scheme comprises the steps: firstly, respectively training an indicator light target detection model (small model) used for accurately positioning an indicator light and a multi-modal large model (large model) used for finely analyzing a state; during identification application, firstly, a trained target detection model is utilized to quickly position and cut out image blocks of all indicator lamps from an input whole image; and then, combining the image blocks with preset text prompt words, inputting the image blocks and the preset text prompt words into a multi-mode large model subjected to fine adjustment, and analyzing and outputting the on-off state of each indicator lamp by the large model. Through the cooperation strategy of small model positioning and large model analysis, effective balance of calculation efficiency and identification precision is realized, and the method has the advantages of high identification accuracy, strong robustness, high automation degree and strong application generalization ability.

The invention relates to an energy storage type photo-generated cathode protection coating material and a preparation method thereof, and belongs to the technical field of chemical materials. The coating material is a binary composite material which is composed of nanometer MoO3 and BiVO4. The preparation method comprises the following steps: firstly, preparing nano MoO3 by a precipitation method, and then preparing a nano MoO3 and BiVO4 binary composite material in situ by a low-temperature hydrothermal method, namely the coating material disclosed by the invention. In the coating material, nano MoO3 and BiVO4 are adopted to form a heterojunction material, so that the photoresponse range of BiVO4 is widened, and the photoelectron-hole separation efficiency is effectively improved; meanwhile, nano MoO3 is used as an energy storage material with high theoretical specific capacity, part of photo-induced electrons generated by BiVO4 can be stored in the form of a compound, and in a dark state environment, the electrons stored in MoO3 are released and quickly transferred to the surface of metal or a film-forming substrate, so that cathode protection of the metal in the dark environment is realized; the technical problems that in the prior art, nano BiVO4 is low in electron-hole separation efficiency and poor in metal surface adhesive force, and the cathode protection effect cannot be continued in the dark state are solved.

The invention relates to the field of nano photonics, and relates to an optical device. The optical device comprises a light source having a wavelength in the spectrum of [lambda] 1s, where the light source is implemented as an image projector, and an optical element which is a plane in the (x, y) plane, the normal of which forms an angle of [theta] 1s to the optical axis of the light source. The optical element comprises at least a first optically transparent dielectric layer having a thickness d1 and a dielectric permeability [epsilon] 1, a second absorptive two-dimensional material layer having a thickness d2 < = 100 nm and a dielectric permeability [epsilon] 2, and an optically transparent substrate having a dielectric permeability [epsilon] 3. The layers and the substrate are configured to form topological dark state points. The technical result consists in providing the possibility of producing planar optics for ultra-thin structures with high image quality.

The invention discloses a display panel, electronic equipment and a driving method, and relates to the technical field of display. The display panel comprises a light emitting layer, a light filtering layer, a light control structure and an optical sensor, a pixel limiting structure of the light emitting layer is made of a light absorbing material, a light filtering unit of the light filtering layer is arranged opposite to a sub-pixel in position, and the light control structure is arranged corresponding to a sensing area in position; in the direction perpendicular to the display surface, at least part of the pixel limiting structures are opposite to the light control structures in position, and the optical sensors are used for receiving reflected light from the light control structures; under the condition that the optical sensor needs to be detected, the light control structure can reflect ambient light, so that the optical sensor can receive reflected light to complete detection; under the condition that dark state display needs to be carried out, the light control structure can enable ambient light to pass through and absorb the ambient light through the pixel limiting structure, so that reduction of local brightness of the sensing area is facilitated, and improvement of brightness uniformity of the display panel is facilitated.

The invention discloses a display panel and a display device, the display panel comprises a substrate, an active layer, an insulating layer, a filter layer and a first color resistance part, the active layer is located on the substrate, and the insulating layer is located on the side, away from the substrate, of the active layer. The insulating layer is provided with a first connecting hole, and the first connecting hole is exposed out of one end of the active layer. The light filtering layer is located on the side, away from the substrate, of the insulating layer, the light filtering layer comprises a light filtering part located in the first connecting hole, and the first color resistance part is arranged in the first connecting hole and located between the light filtering part and the active layer. And in the same first connecting hole, the color of the first color resistance part is different from that of the light filtering part. Therefore, the superposition of the first color resistance part and the light filtering part can form wide-spectrum absorption, and the range of an absorption wave band in the first connecting hole is enlarged, so that dark-state light leakage of the first connecting hole is reduced.

The application provides a display substrate, a preparation method thereof and a display device. The display substrate comprises a substrate, an encapsulation layer, a light filtering layer and an optical film layer. The encapsulation layer is located on the substrate, the light filtering layer is located in the encapsulation layer, and the light filtering layer comprises a black matrix. The black matrix comprises a black matrix opening. The optical film layer is located on a side of the encapsulation layer away from the substrate. The optical film layer is configured to partially transmit and partially absorb incident light. The light transmittance of the optical film layer is greater than that of the black matrix. The optical film layer comprises an optical film layer opening. The projection of the optical film layer opening on the substrate is located within the projection of the black matrix opening on the substrate. The technical scheme provided by the embodiment of the application can improve the dark state color separation phenomenon.

The embodiment of the present invention provides a display panel and a display device. The display panel includes a substrate; a metal portion located on the substrate; a plurality of light-emitting elements located on a side of the metal portion away from the substrate, the light-emitting elements including a first electrode, a light-emitting layer, and a second electrode stacked in sequence along the light-emitting direction of the display panel; wherein the orthographic projection of the metal portion on the substrate covers the orthographic projection of the light-emitting layer and the first electrode on the substrate. In the embodiment of the present invention, the first electrode has a relatively flat surface, so the probability of mutual interference between the ambient light reflected by the first electrode is reduced, which can improve the dispersion phenomenon of the display panel in the dark state and enhance the appearance quality; at the same time, the relatively flat first electrode can also reduce the color difference of the pixel light-emitting area color at different viewing angles, improve the color deviation problem of the display panel at large viewing angles, and enhance the display effect.

The application is suitable for the field of optical technology, and provides an illumination system and a projection device. The illumination system comprises a light source device, a waveguide and a dynamic coupling-out device. The light source device is used for providing an illumination light beam. The waveguide comprises a coupling-in region and a coupling-out region. The illumination light beam is coupled into the waveguide through the coupling-in region and propagates inside the waveguide to the coupling-out region. The dynamic coupling-out device is arranged at the coupling-out region and is used for coupling out the illumination light beam from the coupling-out region of the waveguide. The dynamic coupling-out device comprises a plurality of sub-zones. The coupling-out efficiency of each sub-zone is adjustable. The dynamic coupling-out device with adjustable coupling-out efficiency of different sub-zones is applied to the projection device. By respectively controlling the coupling-out efficiency of each sub-zone, the sub-zone illumination function of the projection device can be realized, and the overall power consumption is reduced. Meanwhile, the sub-zone illumination can reduce the brightness of the dark-state pixels in the picture, thereby improving the contrast of the display picture and meeting the demand of HDR display.

A display panel and a display device are provided. In an embodiment, the display panel includes: a substrate; a plurality of metal parts disposed above the substrate; and a plurality of light-emitting elements disposed at a side of the plurality of metal parts facing away from the substrate, each of the plurality of light-emitting elements including a first electrode, a light-emitting portion, and a second electrode stacked in sequence in a light-exiting direction of the display panel. In an embodiment, an orthographic projection of each of the plurality of metal parts on the substrate covers an orthographic projection of a respective one first electrode on the substrate. In an embodiment, the first electrode has a relatively flat surface, so the probability of mutual interference between the ambient light reflected by the first electrode is reduced, which can alleviate color dispersion of the display panel in a dark state.

The application provides a projection display device, an optical system and a manufacturing method thereof. The projection display device comprises a polarization splitting element, at least one image generating element and an optical compensation element. The polarization splitting element is configured to polarize an incident light beam into at least two different directions of outgoing light beams. The image generating element is located on the propagation path of the at least one outgoing light beam and is configured to modulate the outgoing light beam into information light based on image information. The optical compensation element is located between the polarization splitting element and the image generating element and allows at least part of the outgoing light beam and the information light to pass through. In this way, by arranging the optical compensation element allowing at least part of the outgoing light beam and the information light to pass through, multi-screen display under different projection distances can be achieved, the structure is simple, and the cost is low. Moreover, by arranging the optical compensation element, the dark state stray light can be reduced, thereby improving the overall contrast of the bright and dark areas of the projection display device.

The invention relates to the field of electrochromism, and discloses an electrochromism material, an electrochromism device and application of the electrochromism material and the electrochromism device. The electrochromic material is prepared from a copolymer of arylamine and thiophene monomers, and the electrochromic material which is transparent in a neutral state, colored in a doped state and high in optical contrast ratio is achieved by adjusting the positions and types of substituent groups on the arylamine and the thiophene monomers. When the electrochromic material is in a neutral state, the absorption initial wavelength is smaller than or equal to 480 nm, preferably smaller than or equal to 420 nm, the bright-state transmittance under visible light is larger than or equal to 60%, and the electrochromic material is in a transparent state and even colorless; and light absorption in different wavelength ranges can be realized in a doping state (oxidation state), so that various dark-state colors such as purple, red, brown, blue and black can be realized. And the dark state (doped state) transmittance under visible light is less than or equal to 15%, so that high optical contrast can be realized, the optical contrast is greater than or equal to 50%, and the requirements of the fields of intelligent automobiles, 3C and the like on a wider color change range are met.

The display panel comprises at least two light shielding layers, orthographic projections of light-transmitting openings in different light shielding layers on a driving back plate are mutually overlapped to form an overlapped area, and the shape of the overlapped area is changed by changing the relative positions of the light-transmitting openings in the different light shielding layers, so that the light-transmitting openings in the same type are not in the same type, and the light-transmitting openings in the same type are not in the same type. And overlapping areas of at least part of the light-transmitting openings are different in shape. The reflected light of the ambient light generates a destructive interference effect when passing through the overlapping areas of different shapes, so that a diffraction aperture formed by the reflected light of the ambient light is weakened or eliminated, and the color separation phenomenon generated in the visual effect when the display panel is in a dark state is improved. The invention further provides a display device comprising the display panel.

An atomic object confined in a particular region of an atomic object confinement device is cooled using an EIT cooling operation from S to P to D. A controller associated with the atomic object confinement device controls a first steering source and a second steering source to provide a first steering signal and a second steering signal, respectively, to the particular region. The first steering signal is characterized by a first wavelength corresponding to a transition between an S manifold and a P manifold of a first component of the atomic object, and the S to P transition is detuned by a first detuning amount. The second steering signal is characterized by a second wavelength corresponding to a transition between the P manifold and a D manifold of the first component, and the P to D transition is detuned by a second detuning amount. The first detuning amount and the second detuning amount are selected to establish a dark state associated with a two-photon transition between the S manifold and the D manifold.

The invention provides a preparation method of an electrochromic device and the electrochromic device prepared by the preparation method, and relates to the technical field of electrochromism. The method comprises the following steps: providing an electrochromic substrate; judging whether the electrochromic layer is in a first charge state or not; and when the electrochromic layer is in the first charge state, carrying out heating treatment or heating pressurization treatment on the electrochromic substrate to obtain the electrochromic device. By heating or heating and pressurizing the electrochromic layer which is already in the first charge state, a conjugated structure in the electrochromic layer can be fully enhanced, so that the absorption intensity of the electrochromic layer to a visible spectrum is increased, and the regularization degree of molecular arrangement in the electrochromic layer is improved. The electrochromic device prepared by the method has lower dark-state light transmittance, so that the overall contrast ratio of the electrochromic device is improved, and the optical performance of the electrochromic device is remarkably improved.

Reflective polarization rotators based on twisted nematic (TN) liquid crystal (LC) configurations may optimize achromatic performance in bright and dark states through wavelength dependencies of polarization conversion compensated by TN LC layers. Under linear achromatic input polarization, the purpose of compensation is to provide circular achromatic polarization at the reflector, which ensures achromatism of 90 degree polarization rotation at two passes. The compensation notes to maintain linear polarization at the reflector when the LC device is driven to a vertical LC director configuration. The method ensures that the performance of the polarization rotator is achromatic in the driving state and the non-driving state of the LC device.

The invention discloses a preparation method of a high-contrast GHLC dimming device, and belongs to the field of functional liquid crystal material preparation. The problems that an existing GHLC technology is narrow in light transmittance adjusting range and low in dark-state haze are solved. The method comprises the following steps: 1, heating, stirring and mixing a dye, a liquid crystal material and an ion dopant to obtain a liquid crystal system; and 2, filling the liquid crystal system into a vertical alignment liquid crystal box. The manufacturing method is used for manufacturing the high-contrast GHLC dimming device.

According to the technical scheme, the dark-state low-light-transmittance dimming glass comprises dimming glass, the dimming glass comprises a first transparent substrate, a second transparent substrate, a first dimming film and a second dimming film, and the first dimming film and the second dimming film are arranged between the first transparent substrate and the second transparent substrate. A first laminated layer is arranged between the first transparent substrate and the first light adjusting film, a second laminated layer is arranged between the second transparent substrate and the second light adjusting film, a bonding layer is arranged between the first light adjusting film and the second light adjusting film, and the dark-state light transmittance of the light adjusting glass is smaller than or equal to 0.5%. According to the dimming glass, the dark-state light transmittance of the dimming glass is less than or equal to 0.5%, and the problem that the dark-state light transmittance of the conventional dimming glass is high is solved.

According to the technical scheme, the dark-state low-light-transmittance dimming glass comprises dimming glass, the dimming glass comprises a first transparent substrate, a second transparent substrate, a third transparent substrate, a first dimming film arranged between the first transparent substrate and the second transparent substrate and a second dimming film arranged between the second transparent substrate and the third transparent substrate, and a first adhesive layer is arranged between the first transparent substrate and the first dimming film. A second laminated layer is arranged between the second transparent substrate and the first light adjusting film, a third laminated layer is arranged between the second transparent substrate and the second light adjusting film, and a fourth laminated layer is arranged between the third transparent substrate and the second light adjusting film; the dark state light transmittance of the dimming glass is smaller than or equal to 0.5%. According to the dimming glass, the dark-state light transmittance of the dimming glass is less than or equal to 0.5%, and the problem that the dark-state light transmittance of the conventional dimming glass is high is solved.

The invention discloses an anti-noise image recognition method and system, and relates to the technical field of neuromorphic calculation, image recognition and brain-like hardware control, and the system comprises an input module, a noise estimation module, a controller module, a synaptic array module, a read-out / classification module, a near-infrared erasure reset module and a one-way electric rewrite-in calibration module. The synaptic array has the characteristics of electrical stimulation one-way programming-near-infrared light erasure reset; according to the method, the noise density of an input image is calculated, and a result and confidence are obtained through initial reasoning of a synaptic array; when the noise density is larger than or equal to a preset noise density threshold value or the confidence coefficient is smaller than or equal to a preset confidence coefficient threshold value, triggering a near-infrared light erasing reset array, applying single-polarity electric pulse calibration in a dark state, and then reasoning output, a selectable grading strategy and a voting mechanism; according to the scheme, closed-loop reset calibration is formed, recognition robustness and long-term stability under medium and high noise are improved, end side energy consumption is reduced, and the method is suitable for a low-power-consumption visual recognition scene.

The invention provides a dark-state charged exciton fluorescence emission device and a preparation method thereof. The dark-state charged exciton fluorescence emission device comprises a substrate, a metal layer, a two-dimensional semiconductor layer and a silver nanowire, wherein the contact part of the two-dimensional semiconductor layer and the silver nanowire is made of a single-layer two-dimensional material, and the metal layer and the silver nanowire form a vertically stacked plasmon nano resonant cavity; the plasmon nano resonant cavity is used for generating a resonance electromagnetic field enhancement effect under the action of an excitation light field so as to induce dark-state charged excitons in the two-dimensional semiconductor layer to realize fluorescence emission; the device provided by the invention is simple in structure and clear in layout of each layer, and the structural complexity and the preparation difficulty are reduced; meanwhile, a vertically stacked plasmon nano resonant cavity is formed through the metal layer and the silver nanowires, a resonance electromagnetic field enhancement effect can be generated by means of an exciting light field, an external electric field or magnetic field does not need to be relied on, and the use condition and the test equipment requirement are simplified.

The present application provides a polarizer and a display device. The polarizer is fixed to one side of a display panel. The polarizer includes a polarizing layer and at least one functional layer stacked on the polarizing layer. The functional layer is added with a light absorber to reduce transmittance of light with a predetermined wavelength. This can effectively solve a problem that a color temperature of the display panel drops greatly after irradiation of the light of the predetermined wavelength. The present application also improves viewing angles and relieves color shift and dark-state light leakage.

The present application relates to the technical field of photoelectrochemical performance analysis, and discloses a method for quantitatively analyzing photoelectrochemical performance based on polarization potential calibration, which comprises the following steps: (1) in a three-electrode system, photo-induced OCP of a semiconductor electrode with a photoelectric functional coating is tested under solution environment and light, and a photo-induced polarization curve of the semiconductor electrode is obtained; (2) in a three-electrode system, dark-state OCP of the semiconductor electrode is tested under solution environment and closed light, and a dark-state polarization curve of the semiconductor electrode is obtained; (3) according to the photo-induced polarization curve and the dark-state polarization curve, a semi-logarithmic polarization curve, a current density-potential curve, a ΔE-i curve and a ΔE-Δi curve are obtained; and (4) photoelectrochemical performance of the semiconductor electrode is analyzed according to the curves. The method can directly characterize actual photo-induced current density of the photoelectric functional coating and quantitatively analyze electrochemical performance thereof.

The invention relates to the field of electrochromism, and discloses an electrochromism material, an electrochromism device and application of the electrochromism material and the electrochromism device. According to the invention, polymers with different chemical structures, such as a combination of arylamine and thiophene fragments or a combination of arylamine, thiophene and carbazole fragments, are prepared, and the electrochromic material which is transparent in a neutral state, colored in a doped state and high in optical contrast ratio is realized by adjusting the positions and types of substituent groups on arylamine, thiophene and carbazole. When the electrochromic material is in a neutral state, the absorption initial wavelength is smaller than or equal to 480 nm, the bright-state transmittance under visible light is larger than or equal to 60%, and the electrochromic material is in a transparent state and even colorless; and light absorption in different wavelength ranges can be realized in a doping state, so that various dark-state colors such as purple, red, brown and black can be realized. And the dark-state transmittance under visible light is less than or equal to 15%, so that high optical contrast can be realized, the optical contrast is greater than or equal to 50%, and the requirements of intelligent automobiles, 3C and other fields on a wider color change range are met.

A polarizer and a display device are provided. In the polarizer, on a basis of using an optical compensation layer to compensate a birefringence of liquid crystal molecules in a liquid crystal layer, a liquid crystal compensation layer is configured to compensate the birefringence of the liquid crystal molecules in the liquid crystal layer. The liquid crystal compensation layer adjusts a compensation value through a refractive index difference and a thickness of the liquid crystal molecules, so an adjustment range is large and a restriction is small, which can be matched with a high phase difference of the display device, and further improves side-view light leakage in a dark state of the liquid crystal display.

A display device includes a circuit substrate, a light-emitting layer, a quarter-wave plate, and a band-pass polarizing layer. The light-emitting layer is disposed on the circuit substrate and has a plurality of light-emitting structures. The light-emitting structures are electrically connected to the circuit substrate and include a plurality of first light-emitting structures. The first light-emitting structures have a first main light-emitting wavelength. The quarter-wave plate overlaps the light-emitting structures of the light-emitting layer. The quarter-wave plate is between the band-pass polarizing layer and the light-emitting layer. The band-pass polarizing layer includes a plurality of first band-pass polarizing patterns. The first band-pass polarizing patterns have a first absorption axis and an average transmittance greater than 50% in a first wavelength range. The first wavelength range is the first main light-emitting wavelength ± 10 nm. The first band-pass polarizing patterns have an average transmittance less than 20% outside the first wavelength range and in a polarization direction parallel to the first absorption axis. The display device provided by the present application can balance the light energy utilization rate and the dark state contrast.

The invention relates to the technical field of photoelectric detector testing, and discloses a tester photoconductive signal linearity standard evaluation method, which comprises the following steps: configuring an independent driving narrow-band light source coupled to an integrating sphere, and constructing a binary weighted luminous flux synthesis environment; measuring a thermal time constant of the detector, defining a test period including a measurement time slot and a thermal compensation time slot, and setting single-period target total dissipated energy; starting a light source combination according to the binary control code, and collecting transient response current under the condition that constant measurement bias voltage is applied to maintain the constant electric field in the detector; calculating an energy gap based on an energy conservation principle, applying a dynamic compensation voltage pulse in a thermal compensation time slot to execute dark-state thermal injection, and maintaining the lattice temperature of the detector to be constant; and traversing the full dynamic range, and calculating the linearity deviation by using a superposition principle. The total dissipated energy of the detector in the testing process is kept constant through a time division multiplexing electric heating compensation mechanism.

The invention discloses a device and method for optimizing the output performance of a photoconductive switch based on vortex light. The device comprises a laser, and a filter, a focusing lens, a spiral phase plate and the photoconductive switch are sequentially arranged in the light beam propagation direction of the laser. The output end of the laser is coaxially aligned with the light-in surface of the spiral phase plate, and the light-out surface of the spiral phase plate is coaxially aligned with the gap area of the photoconductive switch. The method comprises the following steps: adjusting the height and horizontal position of each component to ensure that a light source is coaxial and a light beam sequentially passes through a laser window, a focusing lens and a photoconductive switch gap center at the center of a spiral phase plate; the laser is started to output Gaussian laser, the Gaussian laser is converted into vortex light through the spiral phase plate, the vortex light enters a semiconductor substrate area corresponding to an electrode gap of the photoconductive switch, photon-generated carriers are excited to be generated in the substrate, the photoconductive switch is converted into a conduction state from a dark state and a high-resistance state, and voltage is output. The problem that the output amplitude of the photoconductive switch is slightly improved by Gaussian light in the prior art is solved.

The invention provides a vehicle and a dimming assembly. The dimming assembly comprises a first substrate layer (10), a dimming function layer (20) and a polarizing film layer (30). The dimming function layer (20) is connected to the first substrate layer (10). The polarizing film layer (30) is connected to the dimming functional layer (20), and the polarizing film layer (30) is made of a transmission type polarizing material. The polarizing film layer (30) is made of a transmission type polarizing material, the polarizing film layer (30) is combined with the dimming function layer (20), and when light sequentially penetrates through the polarizing film layer (30) and the dimming function layer (20) or sequentially penetrates through the dimming function layer (20) and the polarizing film layer (30), the dimming assembly can present a dark state effect. The thickness of the polarizing film layer (30) is relatively thin, the material cost is low, and after the polarizing film layer (30) is combined with the dimming functional layer (20), the thickness, the cost and the weight of the dimming assembly can be reduced. The content of the doped dye in the dimming functional layer (20) is low, so that the dye can be prevented from being separated out.

The application relates to a control method, device and equipment of an intelligent eyeshade and a storage medium, the method comprising the following steps: acquiring an eye opening and closing state of a target user through a biological sensor of the intelligent eyeshade, acquiring ambient light intensity information through a light sensor of the intelligent eyeshade, determining a target screen mode according to the eye opening and closing state, and gradually adjusting a display screen light transmission coefficient of the intelligent eyeshade according to the target screen mode and the ambient light intensity information, so that when the eye closing state is detected, the display screen light transmission coefficient of the intelligent eyeshade is gradually adjusted in combination with the ambient light intensity information, the display screen is switched from a light transmission mode to a light shielding mode, and the user is helped to quickly shield light and fall asleep; and when the eye opening state is detected, the display screen light transmission coefficient is gradually adjusted in combination with the ambient light intensity information, light received by the eye is gradually switched from a dark state to a state synchronous with ambient light, a gradually changing visual experience is provided for the user, and the use experience of the user is improved.