WO2021174579A1 - Film de réglage de lumière à cristaux liquides multicolore variable - Google Patents

Film de réglage de lumière à cristaux liquides multicolore variable Download PDF

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Publication number
WO2021174579A1
WO2021174579A1 PCT/CN2020/079177 CN2020079177W WO2021174579A1 WO 2021174579 A1 WO2021174579 A1 WO 2021174579A1 CN 2020079177 W CN2020079177 W CN 2020079177W WO 2021174579 A1 WO2021174579 A1 WO 2021174579A1
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liquid crystal
film
color
dimming
crystal film
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PCT/CN2020/079177
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English (en)
Chinese (zh)
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余德桢
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珠海市绮光科技有限公司
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Publication of WO2021174579A1 publication Critical patent/WO2021174579A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/13725—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on guest-host interaction

Definitions

  • This application relates to the technical field of dimming films, and in particular to a variable multi-color liquid crystal dimming film.
  • the optical axis of the liquid crystal particles are oriented randomly, presenting a disordered state, and the effective refractive index n0 does not match the refractive index np of the polymer.
  • the incident light is strongly scattered, the film is opaque or semi-transparent, and an external voltage is applied, and the optical axis of the liquid crystal particles are aligned perpendicular to the surface of the film, that is, the direction of the electric field is consistent.
  • the ordinary light refractive index of the particles basically matches the refractive index of the polymer, and there is no obvious interface, forming a basically uniform medium, so the incident light will not be scattered, and the film is transparent. Therefore, under the drive of an external electric field, PDLC has optical switching characteristics.
  • Electrochromic materials are a very promising function. Materials, it has broad application prospects in large displays, optical switches, non-glare mirrors, electrochromic storage devices and architectural window glass, smart windows. Devices made of electrochromic materials are called electrochromic devices. .
  • Polymer-dispersed liquid crystal PDLC is a mixture of low-molecular liquid crystals and prepolymers, under certain conditions, after polymerization, to form micron-sized liquid crystal droplets uniformly dispersed in the polymer network, and then use the dielectric anisotropy of the liquid crystal molecules
  • the opposite sex obtains materials with electro-optical response characteristics, and has been widely used in optical modulators, thermal and pressure-sensitive devices, electrically controlled glass, light valves, projection displays, and e-books.
  • the electrochromic EC device is a phenomenon in which the optical properties of the material, such as reflectance, transmittance, and absorptance, undergo stable and reversible color changes under the action of an external electric field, and appear as reversible changes in color and transparency.
  • the main purpose of this application is to propose a variable multi-color liquid crystal dimming film, which aims to solve the problem of the single color of the current electrochromic liquid crystal dimming film.
  • a variable multi-color liquid crystal dimming film which is characterized by comprising a color liquid crystal dimming film, a dimming driving circuit and a driving circuit;
  • the dimming driving circuit is connected to the color liquid crystal dimming film for driving The dye liquid crystal molecules in the liquid crystal layer in the liquid crystal dimming film are deflected;
  • the driving circuit is connected to the liquid crystal dimming film and is used to adjust the intensity of light passing through the dye liquid crystal on the liquid crystal dimming film to adjust the gray scale.
  • the color liquid crystal dimming film includes a red liquid crystal film, a blue liquid crystal film, and a green liquid crystal film.
  • the red liquid crystal film, the blue liquid crystal film and the green liquid crystal film are all composed of two pieces of PC and ITO wrapped up and down to form an empty cell , And pour different corresponding dye liquid crystals into the empty cell to form a color liquid crystal layer.
  • the upper and lower sides of the color liquid crystal layer are respectively connected to the two sides of the ITO, and the ITO is connected to the dimming drive circuit To form a loop, the other side of the two pieces of ITO is covered with two pieces of PC.
  • the red liquid crystal film, the blue liquid crystal film, and the green liquid crystal film are sequentially superimposed and placed on the front and back sides of the color liquid crystal layer for displaying different colors on the light passing through the color liquid crystal layer.
  • the drive circuit is composed of an analog signal, an active matrix display circuit, a three-color drive circuit, and a switch circuit.
  • the input end of the analog signal is connected to the input end of the switch circuit, and the output end of the analog signal is connected to the switch circuit.
  • the input end of the active matrix display circuit is connected, the output end of the active matrix display circuit is connected to the input end of the three-color drive circuit, and the three-color drive circuit is connected to three dimming drive circuits for Control the light-shielding band of the red liquid crystal film, the blue liquid crystal film and the green liquid crystal film.
  • it also includes a laminated film set through which the color liquid crystal layer passes and is installed between the two pieces of ITO.
  • the two ends of the dimming drive circuit are respectively connected to the two pieces of ITO, and the edges of the two pieces of ITO are respectively connected with conductive points, and the conductive points are for copper mesh soldering for all
  • the wires of the dimming drive circuit are welded to the copper mesh, and the positive and negative electrodes of the dimming drive circuit are connected to the transformer.
  • dimming driving circuits arranged on the red liquid crystal film, the blue liquid crystal film and the green liquid crystal film, which are used to select light waves in a small range that need to pass, while reflecting off other passing wavebands.
  • the red liquid crystal film, the blue liquid crystal film and the green liquid crystal film are GH guest-host type dye liquid crystals, and the liquid crystal molecules are matched with dyes of different colors, so that three different colors of red, green, and blue dye liquid crystals are prepared
  • it also includes a set of three-color drive circuit to control the dimming drive circuit to ensure the light-shielding effect of the red liquid crystal film, the blue liquid crystal film and the green liquid crystal film.
  • the active matrix display circuit inputs periodic positive pulses during the display period, inputs the same gray level to the input terminal of the switch circuit during the discharge period, and inputs the gray level of the display screen during the display period.
  • variable multi-color liquid crystal dimming film has a GH guest-host type dye liquid crystal sandwiched between the transparent electrode.
  • the dye molecules are matched with the liquid, and the oriented arrangement of the molecules forms an orderly arrangement, and the liquid crystal molecules have different colors.
  • Dye liquid crystals of three different colors, red, green, and blue are prepared, and then the dye liquid crystals of different colors are poured into three red liquid crystal films, blue liquid crystal films and green liquid crystal films, and a layer of red dye liquid crystal film , A layer of green dye liquid crystal film, a layer of blue dye liquid crystal film, after the three layers of film are stacked vertically, by inputting three different voltages, the color depth of each layer of the three film can be controlled, that is, the film can realize all
  • the random adjustment of natural colors greatly improves the response time of the overall circuit. Generally, the response time is less than 0.1, and the response time is fast. The light and dark colors can be switched quickly within 0.1 seconds.
  • the light source passes through the front and back of the color LCD dimming film,
  • the human eye can receive the saturated light of a certain color, which is used to select the small range of light waves that need to pass, and reflect off the other passing bands, so as to achieve the purpose of color change.
  • FIG. 1 is a schematic diagram of the structure of a variable multi-color liquid crystal dimming film in an embodiment of the present invention
  • FIG. 2 is a schematic diagram of the structure of a variable multi-color liquid crystal dimming film in another embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the transparent structure of a single liquid crystal film with variable multicolor in FIG. 2;
  • FIG. 4 is a schematic diagram of the opaque structure of a single liquid crystal film with variable multicolor in FIG. 2;
  • FIG. 5 is a circuit diagram of a driving circuit of the variable multi-color liquid crystal light control film in FIG. 2.
  • This application proposes a variable and multi-color liquid crystal dimming film, as shown in Figure 1-2, including a color liquid crystal dimming film 1, a dimming drive circuit 2, and a drive circuit 3; the dimming drive circuit 2 and the color liquid crystal dimming film
  • the light film 1 is connected to drive the deflection of the liquid crystal molecules in the liquid crystal layer in the liquid crystal light control film 1;
  • the driving circuit 3 is connected to the liquid crystal light control film 1 to adjust the light intensity of the dye liquid crystal on the liquid crystal light control film 1
  • Grayscale the red liquid crystal film 11, the blue liquid crystal film 12 and the green liquid crystal film 13 are covered with two pieces of PC with flexible PET or PC substrate, which can be cut in different shapes, and the curved surface is beautiful, light weight, flexible PET or
  • the inside or surface of the PC substrate material will not have a cloudy or turbid appearance due to light scattering.
  • the haze of the flexible PET or PC substrate material itself is close to 0, high-definition transparency, and the color of external things
  • the variable multi-color liquid crystal dimming film has the function of adjusting multiple colors, as shown in FIG. 3.
  • the color liquid crystal dimming film includes a red liquid crystal film 11, a blue liquid crystal film 12, and a green liquid crystal film.
  • the liquid crystal film 13, the red liquid crystal film 11, the blue liquid crystal film 12 and the green liquid crystal film 13 are all composed of two pieces of PC and ITO wrapped up and down to form an empty cell, and different corresponding dye liquid crystals are poured into the empty cell to form a color liquid crystal layer 14.
  • the upper and lower sides of the color liquid crystal layer are respectively connected to the two sides of the ITO, and the ITO is connected to the dimming drive circuit to form a loop, and the other side of the two ITO covers two PCs. .
  • the two pieces of PC are manufactured according to the principle of polarization of light to avoid direct light passing through, which can effectively eliminate the angle parallel to the transmission axis and put into the line of sight, so that the field of vision is clear and natural, and the light is adjusted to the same direction light. Entering the field of view, the field of view looks soft and not dazzling.
  • the connection between the two pieces of PC and the two pieces of ITO is in the optical standard refractive state.
  • the refractive state is when the light passes through the medium of PC and passes through the medium of ITO and the color liquid crystal layer 14 in turn. Due to the refractive index of the PC and the ITO The refractive index of the color liquid crystal layer 14 is different.
  • the refractive state of entering the color liquid crystal dimming film 1 and leaving the color liquid crystal dimming film 1 meets the optical standard, and the polarization effect will not be affected, which directly leads to the light transmission structure.
  • the image sharpness will not be affected, and the image is real.
  • the dimming driving circuit 2 is connected to the color liquid crystal dimming film 1, and is used to drive the deflection of liquid crystal molecules in the liquid crystal layer in the color liquid crystal dimming film 1. Apply driving voltage to the ITO sheet to form an electric field.
  • the anisotropy of the liquid crystal molecules and their molecular arrangement are easily controlled by the external electric field and magnetic field, so that the light is modulated by the electric signal.
  • the dimming driving circuit 2 applying different current electric fields, the color liquid crystal The liquid crystal molecules in the dimming film 1 will be regularly rotated by 90 degrees, resulting in different transmittances.
  • the dimming drive circuit 2 applies the ITO sheet to energize, the color liquid crystal dimming film 1 is turned on, and the arrangement of the liquid crystal molecules is changed. Orderly, allowing light to pass through easily; when not energized, the arrangement is chaotic, preventing light from passing through, and the liquid crystal molecules are rod-shaped molecules, and their long axes are roughly parallel.
  • the upper and lower groups of dye liquid crystals are processed to open slot planes, rod-shaped
  • the liquid crystal molecules are arranged along the grooves.
  • the grooves of the two groups of dye liquid crystals are perpendicular to each other, and the molecules located between the two planes are forced to enter a 90-degree twisted state.
  • the liquid crystal molecules will rotate to change the light transmittance, thereby realizing multi-gray scale display.
  • the laminated film through which the color liquid crystal layer 14 passes is installed between the ITO sheets.
  • the ITO sheet and the color liquid crystal layer 14 are made under the required process parameters in the autoclave.
  • the center of the color liquid crystal layer 14 is covered by the ITO sheet. Cover, and then stick them together in an autoclave through high temperature and high pressure.
  • the autoclave Before using the autoclave, the autoclave needs to be sterilized and treated with an autoclave.
  • the autoclave is filled with high-pressure gas, and the overall treatment time is controlled at 10-15min. It is used for the later autoclave molding and the autoclave
  • the treatment can effectively avoid bubbles, open glue and other phenomena. Because the glass can prevent water from infiltrating after the glass is laminated, it can be used in the bathroom, toilet and other places that often come into contact with water.
  • the two ends of the dimming drive circuit 2 are respectively connected to the ITO sheet, and conductive points 4 are respectively connected to the edges of the ITO sheet. It is welded with the copper mesh, and at the same time, the positive and negative electrodes of the dimming driving circuit 2 are connected to the transformer.
  • the conductive point 4 set on the ITO chip is the medium connecting the dimming drive circuit 2.
  • the photoresistor of the dimming drive circuit 2 can be adjusted according to the light, or manually adjust the resistance of the photoresistor, and automatically adjust the transparency of the glass according to the light intensity.
  • the resistance of the photoresistor decreases, the voltage applied to both ends of the glass decreases, and the transparency of the glass decreases. Otherwise, the transparency of the glass increases, or the photoresistor is manually adjusted to decrease, and the voltage applied to the two ends of the glass decreases, and the transparency of the glass decreases, and vice versa.
  • the glass transparency is increased, the manual and automatic methods are combined, and the copper mesh on the conductive point 4 can protect the electrode from oxidation, and at the same time avoid contact with the rest of the metal in operation.
  • the red liquid crystal film 11, the blue liquid crystal film 12, and the green liquid crystal film 13 are sequentially superimposed and placed on the front and back sides of the color liquid crystal layer for passing color
  • the light from the liquid crystal layer shows different colors
  • the light for passing through the color liquid crystal layer 14 shows different colors.
  • variable multicolor of the liquid crystal dimming film 1 depends on the dye liquid crystal and the light itself.
  • the dye liquid crystal is not driven by a voltage, and the irregular arrangement produced, blocking all wavelengths of light, is arranged on the color liquid crystal layer.
  • the dye liquid crystals are regularly arranged under electronic control, so that light can penetrate.
  • each film corresponds to Whether the molecules between the two planes enter a 90-degree twisted state, control the light to propagate along the direction of the molecular arrangement.
  • each dye liquid crystal itself can be infinitely adjusted from transparency to color.
  • the color liquid crystal layer 14 is composed of three light-adjusting films with a thickness of 0.2mm, the red liquid crystal film 11, the blue liquid crystal film 12 and the green liquid crystal film 13, and each of the red liquid crystal film 11 and the blue liquid crystal film 12 is controlled. With the power on and off of the green liquid crystal film 13, using the principle of three primary colors, most of the colors can be synthesized by the red, green, and blue colors in different proportions.
  • the red liquid crystal film 11, the blue liquid crystal film 12 and the green liquid crystal film 13 Different combinations of light can display different colors to achieve the purpose of color change, because each color liquid crystal layer 14 is controlled by the dimming driving circuit 2, and each color liquid crystal layer 14 has three liquid crystal cells, which are responsible for each Red, green and blue display.
  • the red liquid crystal film 11, the blue liquid crystal film 12 and the green liquid crystal film 13 are GH guest-host type dye liquid crystals.
  • the GH guest-host type dye liquid crystals are sandwiched between transparent electrodes. When spin pressure is applied, The dye molecules are matched with the liquid, and the oriented arrangement of the molecules forms an orderly arrangement.
  • the liquid crystal molecules are matched with dyes of different colors to prepare three different colors of dye liquid crystals of red, green and blue, and then pour the dye liquid crystals of different colors into Among the three red liquid crystal films 11, blue liquid crystal films 12 and green liquid crystal films 13, one layer of red dye liquid crystal film, one layer of green dye liquid crystal film, one layer of blue dye liquid crystal film, after the three layers of film are stacked vertically, pass Inputting three different voltages can control the color depth of each layer of the three-layer film, that is, the film can be adjusted randomly for all natural colors.
  • the black matrix film is controlled by the active matrix display circuit to ensure the shading effect of the red liquid crystal film, the blue liquid crystal film and the green liquid crystal film
  • a three-color driving circuit is provided to control the dimming driving circuit to ensure the light-shielding effect of the red liquid crystal film 11, the blue liquid crystal film 12 and the green liquid crystal film 13.
  • the red liquid crystal film 11, the blue liquid crystal film 12, and the green liquid crystal film 13 are optical filters that express colors. It can accurately select the small range of light waves to be passed, and reflect other undesired wavebands, and set The two red liquid crystal films 11, the blue liquid crystal film 12 and the green liquid crystal film 13 of the color liquid crystal film 1, the light source is transmitted from the front and rear directions of the color liquid crystal dimming film 1, so that the human eye can receive the saturated light of a certain color.
  • the active matrix display circuit 32 inputs periodic positive pulses during the display period, inputs the same gray level to the input terminal of the switch circuit 34 during the discharge period, and inputs the gray level of the display screen during the display period.
  • the liquid crystal molecules filled in the red liquid crystal film 11, the blue liquid crystal film 12 and the green liquid crystal film 13 are used to select the small range of light waves that need to pass through after being energized, while reflecting off other passing wavebands
  • the driving circuit 3 is composed of an analog signal 31, an active matrix display circuit 32, a three-color driving circuit 33, and a switch circuit 34.
  • the driving circuit 3 has low power consumption, a microampere current, and a voltage of 10V.
  • the input end of the analog signal 31 is connected to the input end of the switch circuit 34, the output end of the analog signal 31 is connected to the input end of the active matrix display circuit 32, and the output end of the active matrix display circuit 32 is connected to the tri-color
  • the input terminals of the driving circuit 33 are connected, and the three-color driving circuit 33 is connected to the red liquid crystal film 11, the blue liquid crystal film 12 and the green liquid crystal film 13, and is used to control the red liquid crystal film 11, the blue liquid crystal film 12 and the green liquid crystal film 13 shading band.
  • the color displayed by each color liquid crystal dimming film 1 depends on the dye liquid crystal. Since the color liquid crystal layer 14 itself has no color, its color cannot be changed according to use. The intensity of the light is controlled to adjust the gray scale, and the color is adjusted actively.
  • the matrix display circuit 32 is controlled by the analog signal 31. When the analog signal 31 is closed, the entire driving circuit 3 is turned on. When the analog signal 31 is turned off, the entire driving circuit 3 is disconnected, and the analog signal 31 passes through The wire is connected to the eight-bit controller, and the active matrix display circuit 32 is active matrix. In the PC area, the current flow is extremely effectively controlled, which greatly improves the response time of the overall circuit. Generally, the response time is less than 0.1ms.
  • the driving circuit 3 is directly controlled by the analog signal 31, which responds quickly, and switches between bright and dark colors within 0.1 seconds.
  • It is a flexible PET or PC substrate, which can be cut in special shapes, has a beautiful curved surface, and is light in weight; 3 no haze, haze close to 0, high-definition transparency, low power consumption, microampere current, and the voltage is also 10V to 1.5V Very low; the color of external things can be seen through the diaphragm without distortion, the true color.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)

Abstract

Film de réglage de lumière à cristaux liquides multicolore variable comprenant un film de réglage de lumière à cristaux liquides coloré (1), un circuit d'attaque de réglage de lumière (2) et un circuit d'attaque (3), le circuit d'attaque de réglage de lumière (2) étant connecté au film de réglage de lumière à cristaux liquides coloré (1) et utilisé pour entraîner la déviation des molécules de cristaux liquides dans une couche de cristaux liquides dans le film de réglage de lumière à cristaux liquides (1), et le circuit d'attaque (3) étant connecté au film de réglage de lumière à cristaux liquides (1). Le film de réglage de lumière à cristaux liquides multicolore variable comprend des cristaux liquides de colorant invité-hôte (GH) pris en sandwich entre des électrodes transparentes ; les molécules de cristaux liquides sont mises en correspondance avec des colorants de différentes couleurs, puis les cristaux liquides de colorant de différentes couleurs sont injectés dans trois films LCD ; la profondeur de couleur de chacun des trois films peut être commandée individuellement par application de trois tensions différentes ; généralement, le temps de réaction est inférieur à 0,1 seconde ; la réponse est rapide ; et une commutation infiniment rapide entre la lumière et les couleurs sombres est effectuée en 0,1 seconde ; et un substrat en PET ou en PC souple est utilisé, lequel présente une faible consommation d'énergie, une intensité de l'ordre du micro-ampère et une tension de 10 V à 1,5 V.
PCT/CN2020/079177 2020-03-06 2020-03-13 Film de réglage de lumière à cristaux liquides multicolore variable WO2021174579A1 (fr)

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CN202010152340.1 2020-03-06
CN202010152340.1A CN112130358A (zh) 2020-03-06 2020-03-06 一种可变多彩色的液晶调光膜

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CN113589574A (zh) * 2021-07-08 2021-11-02 福州大学 一种全彩化车窗显示系统
CN114994963A (zh) * 2021-10-21 2022-09-02 荣耀终端有限公司 后盖、电子设备和后盖的制备方法
WO2023199915A1 (fr) * 2022-04-11 2023-10-19 凸版印刷株式会社 Dispositif de commande de lumière
JP7260030B1 (ja) 2022-04-11 2023-04-18 凸版印刷株式会社 調光装置

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