CN214669958U

CN214669958U - Reinforced color dimming film

Info

Publication number: CN214669958U
Application number: CN202121889348.2U
Authority: CN
Inventors: 宋永进
Original assignee: Shenzhen Kangsheng Photoelectric Technology Co ltd
Current assignee: Shenzhen Kangsheng Photoelectric Technology Co ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2021-11-09
Anticipated expiration: 2031-08-12

Abstract

The utility model relates to a reinforced color dimming film, which consists of a first substrate layer, a first silicon nitride layer, a first metal coating, a first conducting layer, a polymer dispersed liquid crystal layer, a second conducting layer, a second metal coating, a second silicon nitride layer and a second substrate layer which are sequentially stacked; the first metal plating layer and the second metal plating layer have the same or different colors, and the thickness of the first silicon nitride layer and the thickness of the second silicon nitride layer are respectively 10nm to 20 nm. The enhanced color dimming film can improve the color brightness degree of the dimming film and display a better color effect.

Description

Reinforced color dimming film

Technical Field

The utility model relates to a membrane field of adjusting luminance, concretely relates to colored membrane of adjusting luminance of strenghthened type.

Background

The light control film is a film capable of controlling light transmittance, and is generally classified into an electrochromic light control film, a thermochromic light control film, and the like according to the function, and materials for controlling light transmittance used may be classified into inorganic materials, organic materials, polymer dispersed liquid crystal materials, and the like. The PDLC material contains liquid crystal which can change orientation along with the change of an electric field, and the orientation of the liquid crystal is changed when the power is turned on or off, so that the light modulation film is converted between a light transmission state and an opaque state, and the PDLC material is applied to products such as windows, can adjust incident light, and adjust indoor temperature and comfort.

Most of the existing light adjusting films are colorless and transparent, the appearance is monotonous, and some colorful light adjusting films are provided for improving the decoration of the light adjusting films. Some methods add dyes into polymer dispersed liquid crystal materials, but the method needs to consider the dispersibility of the dyes in the polymer dispersed liquid crystal materials and the influence on the performance of the liquid crystal materials, and the formula cost is higher. Some base materials adopt color, but are limited by the types of color fillers which can be adopted in the manufacturing process of the base materials, so that the vivid color is difficult to obtain, and the color adjustment is inconvenient. At present, a method is also provided in which a colored metal coating is introduced into a light modulation film, the metal coating is coated on the inner side of an outer layer substrate film, and since the reflectivity of visible light at the interface between the metal coating and the substrate film is high, part of light is reflected without the metal coating, so that the light modulation film is not bright enough in color.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art, the utility model aims at providing a strenghthened type color membrane of adjusting luminance, this strenghthened type color membrane of adjusting luminance can improve the color brightness degree of membrane of adjusting luminance, shows better color effect.

In order to realize the purpose of the utility model, the utility model provides a reinforced color dimming film, which consists of a first substrate layer, a first silicon nitride layer, a first metal plating layer, a first conductive layer, a polymer dispersed liquid crystal layer, a second conductive layer, a second metal plating layer, a second silicon nitride layer and a second substrate layer which are stacked in sequence; the first metal plating layer and the second metal plating layer have the same or different colors, and the thickness of the first silicon nitride layer and the thickness of the second silicon nitride layer are respectively 10nm to 20 nm.

The further technical scheme is that the thickness of the first metal plating layer and the thickness of the second metal plating layer are respectively 50nm to 100 nm.

The further technical scheme is that a first silicon nitride layer is formed on a first base material layer through a magnetron sputtering method; the second silicon nitride layer is formed on the second base material layer by a magnetron sputtering method.

The further technical scheme is that a first metal coating is formed on the first silicon nitride layer by a magnetron sputtering method; the second metal plating layer is formed on the second silicon nitride layer by a magnetron sputtering method.

The further technical scheme is that a first conductive layer is formed on the first metal plating layer by a magnetron sputtering method; the second conductive layer is formed on the second metal plating layer by a magnetron sputtering method.

The further technical scheme is that the first base material layer and the second base material layer are respectively flexible transparent PET films, and the transmittance of the flexible transparent PET films is between 70% and 90%.

The further technical scheme is that the first metal plating layer and the second metal plating layer are respectively selected from at least one of metal, alloy, metal oxide and metal nitride.

The further technical scheme is that the first conducting layer and the second conducting layer are respectively selected from an ITO conducting layer or a nano silver wire conducting layer.

Compared with the prior art, the utility model discloses can gain following beneficial effect:

the utility model discloses a colored membrane of adjusting luminance of strenghthened type includes middle polymer dispersed liquid crystal layer, and polymer dispersed liquid crystal layer's both sides are equipped with the colored conductive film of forming by conducting layer, metallic coating, silicon nitride layer and substrate layer range upon range of in proper order respectively, and polymer dispersed liquid crystal layer presss from both sides between two conducting layers, forms the membrane of adjusting luminance that can pass through on-off control printing opacity state and opaque state. Wherein the metal coating is as transparent colour layer, when polymer dispersed liquid crystal layer is the printing opacity state, can observe the colour after two metal coating superposes, when polymer dispersed liquid crystal layer is opaque state, can follow the colour that two metal coating were observed respectively to polymer dispersed liquid crystal layer both sides. The utility model discloses still including the silicon nitride layer of setting 10nm to 20nm thickness between metallic coating and substrate layer, the silicon nitride layer has the function that reduces the reflection, avoids too much light to locate the reflection at the interface, not pass through metallic coating and influence the color and present, the utility model discloses can improve the bright degree of membrane color of adjusting luminance.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention. In the figure, 1 is a first base material layer, 2 is a first silicon nitride layer, 3 is a first metal plating layer, 4 is a first conductive layer, 5 is a polymer dispersed liquid crystal layer, 6 is a second conductive layer, 7 is a second metal plating layer, 8 is a second silicon nitride layer, and 9 is a second base material layer.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Detailed Description

As shown in fig. 1, this embodiment provides an enhanced color light modulation film, which is composed of a first substrate layer 1, a first silicon nitride layer 2, a first metal plating layer 3, a first conductive layer 4, a polymer dispersed liquid crystal layer 5, a second conductive layer 6, a second metal plating layer 7, a second silicon nitride layer 8, and a second substrate layer 9, which are sequentially stacked. The polymer dispersed liquid crystal layer 5 is made of a conventional polymer dispersed liquid crystal material, and the polymer dispersed liquid crystal material may be a mixture of nematic liquid crystal and ultraviolet light curing glue, wherein the nematic liquid crystal can be switched between a vertical alignment state and an inverted random state when the first conductive layer 4 and the second conductive layer 6 are powered on or powered off, light can pass through the nematic liquid crystal in vertical alignment, and liquid crystal molecules can scatter light to be switched to an opaque state when the nematic liquid crystal is randomly arranged.

The first metal plating layer 3 and the second metal plating layer 7 are each selected from at least one of a metal, an alloy, a metal oxide, and a metal nitride. For example, stainless steel, gold, silver, platinum, chromium, copper, cobalt, indium tin, nickel chromium, iron nickel, titanium oxide, titanium nitride, etc. may be selected, and a plurality of layers, for example, a multilayer stack, may be used. The first and second metal plating layers 3 and 7 may have the same or different colors. When the colors are the same, the first metal plating layer 3 and the second metal plating layer 7 can display a darker color by overlapping in a light-transmitting state of the polymer dispersed liquid crystal layer 5, and the color of the first metal plating layer 3 and the color of the second metal plating layer 7 can be observed on two sides of the polymer dispersed liquid crystal layer 5 respectively in an opaque state of the polymer dispersed liquid crystal layer 5. When the colors are different, the first metal plating layer 3 and the second metal plating layer 7 are superimposed to display the superimposed colors in a light-transmitting state of the polymer dispersed liquid crystal layer 5, and different colors can be observed on both sides of the polymer dispersed liquid crystal layer 5 in a non-transparent state of the polymer dispersed liquid crystal layer 5.

First silicon nitride layer 2 and second silicon nitride layer 8 have the effect that reduces the reflection, set up between the substrate layer and the metallic coating that correspond, reduce the reflection of light in interface department for more light can see through the metallic coating when the printing opacity state, and the printing opacity colour shows more vividly, also can have more light to see through the metallic coating when opaque state, and light is through 5 scatterings and reflection at polymer dispersed liquid crystal layer, and the colour display of unilateral is also more vividly. The thickness of the first silicon nitride layer 2 and the thickness of the second silicon nitride layer 8 are respectively 10nm to 20nm, which can bring about good effects, reduce the cost and reduce the thickness of the dimming film.

Preferably, the thickness of the first metal plating layer 3 and the thickness of the second metal plating layer 7 are 50nm to 100nm, respectively, without excessively decreasing the transmittance while imparting color.

Preferably, the corresponding conductive layer, metal plating layer, silicon nitride layer, and base material layer are laminated in this order to form a color conductive film, and the polymer dispersed liquid crystal layer 5 is sandwiched between the conductive layers of the two color conductive films. The first color conductive film is prepared by plating a first silicon nitride layer 2 on the first substrate layer 1 by a magnetron sputtering method, plating a first metal plating layer 3 on the first silicon nitride layer 2 by the magnetron sputtering method, and plating a first conductive layer 4 on the first metal plating layer 3 by the magnetron sputtering method, so that a target can be replaced for continuous plating, and the method is simple and convenient. Similarly, for another color conductive film, a second silicon nitride layer 8 is plated on the second substrate layer 9 by a magnetron sputtering method, a second metal plating layer 7 is plated on the second silicon nitride layer 8 by a magnetron sputtering method, and then a second conductive layer 6 is plated on the second metal plating layer 7 by a magnetron sputtering method.

Preferably, the first substrate layer 1 and the second substrate layer 9 are respectively flexible transparent PET films, and are easily bonded to existing glass by means of pasting or the like, and the application is convenient. The transmittance of the flexible transparent PET film is between 70% and 90%, and the overall light transmittance of the film is improved.

Preferably, the first conductive layer 4 and the second conductive layer 6 are respectively selected from an ITO conductive layer or a nano silver wire conductive layer, providing good conductivity while having good light transmittance.

Finally, it should be emphasized that the above-described embodiments are merely preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A reinforced color dimming film is characterized by comprising a first substrate layer, a first silicon nitride layer, a first metal coating, a first conducting layer, a polymer dispersed liquid crystal layer, a second conducting layer, a second metal coating, a second silicon nitride layer and a second substrate layer which are sequentially laminated; the first metal plating layer and the second metal plating layer have the same or different colors, and the thickness of the first silicon nitride layer and the thickness of the second silicon nitride layer are respectively 10nm to 20 nm.

2. The reinforced color light adjusting film of claim 1, wherein the thickness of the first metal plating layer and the thickness of the second metal plating layer are respectively 50nm to 100 nm.

3. The reinforced color light adjusting film according to claim 1 or 2, wherein the first silicon nitride layer is formed on the first substrate layer by a magnetron sputtering method; the second silicon nitride layer is formed on the second base material layer by a magnetron sputtering method.

4. The reinforced color light adjusting film according to claim 1 or 2, wherein the first metal plating layer is formed on the first silicon nitride layer by a magnetron sputtering method; the second metal plating layer is formed on the second silicon nitride layer by a magnetron sputtering method.

5. The reinforced color light adjusting film according to claim 1 or 2, wherein the first conductive layer is formed on the first metal plating layer by a magnetron sputtering method; the second conductive layer is formed on the second metal plating layer by a magnetron sputtering method.

6. The reinforced color dimming film according to claim 1 or 2, wherein the first substrate layer and the second substrate layer are respectively flexible transparent PET films, and the transmittance of the flexible transparent PET films is between 70% and 90%.

7. An enhanced color light adjusting film as defined in claim 1 or 2, wherein said first metal plating layer and said second metal plating layer are each selected from at least one of a metal, an alloy, a metal oxide, and a metal nitride.

8. An enhanced color light adjusting film according to claim 1 or 2, wherein:

the first conducting layer and the second conducting layer are respectively selected from an ITO conducting layer or a silver nanowire conducting layer.