Dual-sided display window film, control device, and dual-sided display window system

Abstract

The technical solution of the present invention discloses a double-sided display window film, a control device for connecting the double-sided display window film, and a double-sided display window system. The double-sided display window film includes: an imaging layer, a first conductive layer, a liquid crystal molecule layer, a second conductive layer, and a reflective layer; the liquid crystal molecule layer is located between the first conductive layer and the second conductive layer; the first conductive layer, the liquid crystal molecule layer, and the second conductive layer are located between the imaging layer and the reflective layer; the material of the imaging layer is a polymer dispersed liquid crystal material, the material of the reflective layer is a one-way reflective material, and the materials of the first conductive layer and the second conductive layer are indium tin oxide conductive materials. The technical solution of the present invention has the advantages of low power consumption, no radiation, long life, low cost, and simple installation.

Description

Technical Field

[0001] The present invention belongs to the technical field of displays, and particularly relates to a double-sided display window film, a control device for connecting the double-sided display window film, a double-sided display window system, and a control method thereof. Background Art

[0002] The conventional display window glass design is an art of display that places goods at the center of the display focus. Window advertising is an important part of modern in-store POP advertising outside stores. It uses media such as glass display windows to display important goods operated by the store in an artful way and with modern scientific and technological means, presenting them as a group of goods samples with decorative beauty to achieve the purpose of stimulating consumption.

[0003] Disadvantages of existing display technologies such as LED screens, liquid crystal displays, and DLP products: (1) They are high-energy-consuming products; (2) They have certain radiation hazards to the human body and poor environmental protection and health; (3) Their service life is not long, only 20,000 hours to 50,000 hours; (4) The initial investment installation cost and usage cost of the products are high, with poor economy; (5) They can only display and cannot achieve human-computer interaction, and can no longer meet the usage needs of consumers; (6) They are complex to install, large in volume, and have high requirements for the usage environment, and cannot meet the requirements of the existing business environment. Summary of the Invention

[0004] The technical problem to be solved by the technical solution of the present invention is that existing glass window display products have high energy consumption, short service life, high cost, complex installation, etc.

[0005] To solve the above technical problems, the technical solution of the present invention provides a double-sided display window film, including: an imaging layer, a first conductive layer, a liquid crystal molecule layer, a second conductive layer, and a reflective layer; the liquid crystal molecule layer is located between the first conductive layer and the second conductive layer; the first conductive layer, the liquid crystal molecule layer, and the second conductive layer are located between the imaging layer and the reflective layer; the material of the imaging layer is a polymer dispersed liquid crystal material, the material of the reflective layer is a one-way reflection material, and the materials of the first conductive layer and the second conductive layer are indium tin oxide conductive materials.

[0006] Optionally, the double-sided display window film further includes: a window film input interface connected to the first conductive layer and the second conductive layer.

[0007] To solve the above technical problems, the technical solution of the present invention also provides a control device for connecting the double-sided display window film, including: a power supply module, a control module, and a processing module;

[0008] The power supply module includes: a power input interface, a peripheral power supply interface, a control module power supply interface, and a processing module power supply interface;

[0009] The control module includes: a control module input interface connected to the power supply interface of the control module, a toroidal transformer connected to the control module input interface, a relay switch connected to the toroidal transformer, a window film power supply interface connected to the relay switch, a first interface of the projection device, a first interface of the processing module, and a central processing unit connected to the relay switch, the first interface of the projection device, and the first interface of the processing module;

[0010] The processing module includes: a processing module input interface connected to the power supply interface of the processing module, a second interface of the processing module connected to the first interface of the processing module, and a first video interface;

[0011] The window film input interface of the double-sided display window film is connected to the window film power supply interface of the control device.

[0012] To solve the above technical problems, the technical solution of the present invention also provides a double-sided display window system, which is characterized by including: glass; the double-sided display window film attached to the surface of the glass; a projection device for projecting onto the double-sided display window film; and the control device connected to the double-sided display window film and the projection device.

[0013] Optionally, the projection device includes: a projection device input interface connected to the peripheral power supply interface, a second interface of the projection device connected to the first interface of the projection device, and a second video interface connected to the first video interface.

[0014] Optionally, the first interface of the projection device, the second interface of the projection device, the first interface of the processing module, and the second interface of the processing module are RS232 interfaces, and the first video interface and the second video interface are HDMI interfaces.

[0015] Optionally, the processing module further includes a first audio interface; the double-sided display window system further includes a sound device, and the sound device includes: a sound device input interface connected to the peripheral power supply interface, and a second audio interface connected to the first audio interface.

[0016] Optionally, the first audio interface and the second audio interface are AV interfaces.

[0017] Optionally, the processing module further includes an expansion interface, and the expansion interface includes at least one of a VGA interface, an RJ45 interface, a WIFI interface, a Bluetooth interface, and a USB interface.

[0018] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0019] One of the remarkable features of the double-sided display window film is its ultra-low power consumption. Its theoretical power consumption is about 4W - 5W per square meter per hour. The main principle is that the core imaging substrate liquid crystal molecular material and ITO conductive material can drive and activate the liquid crystal molecules to arrange in sequence with a low voltage (below 65V) and a theoretical power consumption of about 4W per square meter per hour, thus achieving the effect of lighting up the double-sided display window film screen.

[0020] Another remarkable feature of the double-sided display window film is its non-radiation. The main principle that it causes no radiation harm to the human body is that the entire film structure is formed by five-layer integral pressing. The middle interlayer is a liquid crystal molecular material layer, which theoretically has a certain magnetic field radiation. Through the interlayer treatment of two ITO conductive material layers and the pressing treatment with a layer of one-way reflection material layer and a layer of PDLC insulation protection layer (imaging layer), the effect of no magnetic field radiation is achieved.

[0021] The long service life of the double-sided display window film is also one of its remarkable features. Its theoretical service life is 300,000 - 350,000 hours. The main reason is that the core materials such as liquid crystal molecular material, ITO conductive material, one-way reflection material layer, and PDLC insulation protection layer are synthesized by forced pressing, and their tightness improves the service life of the product; at the same time, the low-voltage operation characteristics also greatly improve the service life of the product.

[0022] The double-sided display window film is very easy to install. It can be used by simply pasting it on ordinary glass without any environmental requirements, and it can be customized and freely cut according to the actual situation of users, which is very flexible.

[0023] The double-sided display window film system can load various human-computer interaction function technologies such as multi-touch technology, body-sensing camera technology, and voice-controlled remote sensing technology; it has a very strong human-computer interaction function. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the double-sided display window film according to an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the display principle of the double-sided display window film according to an embodiment of the present invention;

[0026] Figure 3 It is an application schematic diagram of the double-sided display window system according to an embodiment of the present invention;

[0027] Figure 4 It is a schematic structural diagram of the control device according to an embodiment of the present invention;

[0028] Figure 5 It is a schematic structural diagram of the double-sided display window system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0029] The double-sided display window film is a new type of glass display technology product. Its film structure includes: an imaging substrate liquid crystal molecular material, a one-way reflection material layer, indium tin oxide (ITO) conductive material, and polymer dispersed liquid crystal (PDLC) material. The core film thickness is 0.75 millimeters. The film is attached to any glass. Through a control device (also known as a smart box control system) and in combination with any projection device, it can achieve double-sided simultaneous display of videos, pictures, and documents. The power consumption per square meter of the double-sided display window film is only 4W (alternating current). When the double-sided display window (film) is attached to the glass, through the smart box control system, it can automatically or remotely control the double-sided display window film to instantly achieve four states: imaging, transparent, foggy, and semi-transparent imaging. During the day, the glass can become fully transparent or foggy, serving as an electronic curtain. At night, by sending commands from the smart box control system to the projection device, the glass instantly becomes a super-large double-sided display screen. The double-sided display window film is widely applicable to various transparent glass windows outdoors and indoors; it solves the technical problem that has been plaguing commercial glass windows to become double-sided display screens.

[0030] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] Please refer to Figure 1 , the double-sided display window film of the embodiment of the present invention includes: an imaging layer 21, a first conductive layer 22, a liquid crystal molecular layer 23, a second conductive layer 24, and a reflective layer 25; the liquid crystal molecular layer 23 is located between the first conductive layer 22 and the second conductive layer 24; the first conductive layer 22, the liquid crystal molecular layer 23, and the second conductive layer 24 are located between the imaging layer 21 and the reflective layer 25; the material of the imaging layer 21 is polymer dispersed liquid crystal material, the material of the reflective layer 25 is one-way reflection material, and the materials of the first conductive layer 22 and the second conductive layer 24 are indium tin oxide conductive materials.

[0032] In practical applications, the film structure of the double-sided display window film is, in sequence, a PDLC film, an ITO conductive film, a liquid crystal film, an ITO conductive film, and a one-way reflection material film.

[0033] The PDLC film is a new type of building material (referred to as a dimming film), mainly used for electronic light shielding (commonly known as an electronic curtain). It contains trace amounts of liquid crystal molecules and metal molecular materials, mainly used to block sunlight. The content of liquid crystal molecules in it is small. If it is combined with the projection light source imaging of a projection device, the imaging effect of its three primary colors (RGB) is very poor; generally speaking, the PDLC film can also be used as a projection screen through its own liquid crystal molecules, but the imaging effect is not good, so it cannot be applied. And the middle liquid crystal molecular layer in this embodiment actually makes a special imaging sandwich to achieve a good imaging effect. The ITO conductive film is the sandwich of the middle liquid crystal molecules, with double-sided positive and negative power supply, so two conductive films must be used.

[0034] In addition, since the projection method is the rear projection imaging principle, that is, the film body is displayed on the front, the purpose of using the one-way reflective material layer is to refract the image to the back at the same time. The one-way reflective material film (layer) is similar to the reflective one-way perspective film, but its reflectivity and transmittance are different.

[0035] Furthermore, the double-sided display window film further comprises: a window film input interface connected to the first conductive layer and the second conductive layer. Figure 2 The liquid crystal film in the double-sided display window film contains liquid crystal molecules, which are in a disordered arrangement when not powered. Figure 2 As shown in (a), the transparency of the double-sided display window film is low, and the window film appears foggy (opaque). There are conductive layers (conductive films) on both sides of the liquid crystal molecules. When the positive and negative electrodes of the window film input interface provide current (such as AC voltage 48V) to the conductive layers on both sides of the liquid crystal molecules, the liquid crystal molecules are in an orderly arrangement state, as shown in FIG. Figure 2 As shown in (b), the double-sided display window film is in a transparent state at this time.

[0036] Double-sided display window film has the following advantages: (1) Energy saving; the comprehensive power consumption per square meter is only 4W; (2) Environmentally friendly and healthy, without any harmful rays, anti-ultraviolet rays, infrared rays and other harmful rays to the human body, especially harmless to the eyes; (3) Long service life, the product service life can reach 300,000 hours to 350,000 hours; (4) Low cost, the initial investment cost is only a few hundred yuan per square meter, and the operating cost is extremely low; (5) Human-computer interaction function, this product can be loaded with various human-computer interaction function technologies such as multi-touch technology, body sensing camera technology, voice-controlled remote sensing technology, and has strong software interaction function; (6) Easy installation, just stick it on ordinary glass and use it, without any environmental requirements, and it can be customized and freely cut according to the actual situation of the user, which is very convenient. (7) Waterproof and resistant to high and low temperatures.

[0037] Double-sided display window film is an imaging product similar to the existing holographic imaging optical film. Holographic imaging optical film is a non-electrical film, similar to the car sunshade film. Holographic imaging optical film is made of molecular-level nano-optical components: holographic color filter crystal (HCFC) as the core material, integrating nanotechnology, optics, polymer and other multi-disciplinary achievements and preparation and processing technology, using organic materials, inorganic nanopowders and fine metal powders as raw materials, and is produced into a light and thin imaging principle with advanced precision optical structure inside. Its thickness is 0.1 mm.

[0038] The similarities between holographic imaging optical film and double-sided display window film: A. Both realize imaging through projectors; B. Both are products that can realize display functions only when attached to glass.

[0039] Differences between the holographic imaging optical film and the dual-sided display window film: A. The dual-sided display window film realizes imaging through the principle of activating liquid crystal molecules with low-voltage alternating current, while the holographic imaging optical film realizes imaging through the principle of optical reflection; that is to say, the dual-sided display interactive window film is a powered product, and the holographic imaging optical film is a non-powered product; their working principles are completely different. B. The dual-sided display window film can perform imaging on both sides simultaneously; while the holographic imaging optical film can only display on one side. C. The dual-sided display window film can achieve functional states such as full transparency, imaging, blackout, and floating imaging under power supply, that is, it can be used as an electronic curtain and a display screen; while the holographic imaging optical film does not have this function. D. The display effects of the dual-sided display window film, such as resolution, clarity, and contrast, are much higher than those of the holographic imaging optical film. E. The dual-sided display window film can load various human-computer interaction function technologies such as multi-touch technology, body-sensing camera technology, and voice-controlled remote sensing technology; it has a strong software interaction function; while the holographic imaging optical film does not have this function. F. The service life of the dual-sided display window film is up to 300,000 hours - 350,000 hours, and the service life of the holographic imaging optical film is only 3,000 hours - 5,000 hours.

[0040] An application example of the dual-sided display window system of the technical solution of the present invention is as Figure 3 shown. In this embodiment, the dual-sided display window system includes: glass 1; a dual-sided display window film 2 attached to the surface of the glass 1; a projection device 3 for projecting onto the dual-sided display window film 2; and a control device 4 connected to the dual-sided display window film 2 and the projection device 3.

[0041] During actual application, the film structure of the dual-sided display window film 2 is as Figure 1 shown, and it is pasted on the glass 1 through a one-way reflective material film (layer). The glass 1 and the dual-sided display window film 2 are suspended under the roof wall by a dual-sided display window hanger 6, the projection device 3 is suspended under the roof wall by a projection device hanger 7, and the control device 4 is installed under the roof wall. When the dual-sided display window film 2 performs imaging, both sides of the glass 1 can be seen, and the front observer P1 and the back observer P2 as shown can both see the image on the screen.

[0042] Please refer to Figure 4 and Figure 5 , the control device 4 includes: a power supply module 41, a control module 42, and a processing (PC) module 43.

[0043] The power supply module 41 includes: a main power switch 410; a power input interface 411 for inputting 220V AC power; a peripheral power supply interface 412 for supplying 220V power to external devices (such as a projection device 3, an audio device 5, etc.); a control module power supply interface 413 for supplying 220V power to the control module 42; and a processing module power supply interface 414 for supplying 12V power to the processing module 43.

[0044] The control module 42 includes: a control module input interface 421 connected to the control module power supply interface 413, a toroidal transformer 422 connected to the control module input interface 421, a relay switch 423 connected to the toroidal transformer 422, a window film power supply interface 424 connected to the relay switch 423, a first projection device interface 425, a first processing module interface 426, and a central processing unit (CPU) 427 connected to the relay switch 423, the first projection device interface 425, and the first processing module interface 426. The window film input interface 26 of the double-sided display window film 2 is connected to the window film power supply interface 424 of the control device 4.

[0045] The processing module 43 includes: a processing module input interface 431 connected to the processing module power supply interface 414, a second processing module interface 432 connected to the first processing module interface 426, and a first video interface 433.

[0046] The projection device 3 includes: a projection device input interface 31 connected to the peripheral power supply interface 412, a second projection device interface 32 connected to the first projection device interface 425, and a second video interface 33 connected to the first video interface 433.

[0047] Among them, the first projection device interface 425, the second projection device interface 32, the first processing module interface 426, and the second processing module interface 432 are RS232 interfaces, and the first video interface 433 and the second video interface 33 are HDMI interfaces.

[0048] Further, the processing module further includes a first audio interface 434; the double-sided display window system further includes an audio device 5, and the audio device 5 includes: an audio device input interface 51 connected to the peripheral power supply interface 412, and a second audio interface 52 connected to the first audio interface 434. The first audio interface 434 and the second audio interface 52 are AV interfaces.

[0049] In addition, the processing module may further include an expansion interface. In this embodiment, the expansion interface includes: a VGA interface 435, an RJ45 interface 436 (which can be connected to Ethernet), a WIFI interface 437, a Bluetooth interface 438, and a USB interface 439. In other embodiments, the expansion interface may include one or several of them.

[0050] The working principle of the double-sided display window system in this embodiment is described as follows: The control device 4 is designed with a wide voltage and can be powered within the range of below 65V. The toroidal transformer 422 can convert the voltage of 220V into a voltage below 65V. In this embodiment, the control device 4 converts the input AC voltage of 220V into 48V through the toroidal transformer, and the positive and negative wires of 48V are input to the positive and negative electrodes of the double-sided display window film circuit. The control device 4 is responsible for controlling the relay switch 423 to control the power on and off of the double-sided display window film, thereby changing the transparent and opaque states of the double-sided display window film. When the user turns on the main power switch 410 of the control device 4 and needs the imaging state, the user sends a power-off program command to the double-sided display window film 2 through the control device 4 and sends a start program working command to the projection device. At this time, the double-sided display window film 2 enters the power-off foggy working state, and then the double-sided display window film 2 presents a double-sided display state. The projection device 3 is powered on and starts to work, and the lens shoots towards the double-sided display window film to start imaging. When the non-imaging state is needed, the control device 4 sends a power-on program command to the double-sided display window film 2 and sends a pause program command to the projection device 3. At this time, the double-sided display window film 2 enters the power-on transparent working state, that is, enters the electronic curtain working mode, and the projection device 3 immediately enters the standby state. In short, the control device 4 is the central control system for controlling devices such as the double-sided display window film 2 and the projection device 3.

[0051] The double-sided display window film technology of the present invention is a new type of transparent glass display technology solution product, which is developed based on the continuous application requirements of people for display technology products, and realizes the effect of high-definition double-sided simultaneous imaging through the natural transparent function of the glass.

[0052] Double-sided display window film is one of the important places for the dissemination of corporate image and product information. With the needs of commercial sales, the forms of glass windows will become more and more diversified. The window is not only one of the important ways to promote commercial sales, but also an important manifestation of the country's commercial development. At the same time, the beauty of the window not only adds a beautiful landscape to the city, but also brings people psychological satisfaction. Window advertising has the special function of combining point-of-sale advertising (end point advertising) and mass media advertising (starting point advertising); the image can be projected onto the ordinary glass of the merchant's street-facing glass window through the projection equipment (all interactive window equipment is placed in the store, and the screen size is not limited). Combined with human body sensing, mobile phone interaction, touch module, projection equipment and automatic interactive system, the originally lifeless glass can be interactive with consumers, instantly making the glass lively and making it easier for consumers to notice your products. Customers click on the image screen through the glass outside the store, and the interactive window equipment in the store can sense the movement of the customer's finger, accurately locate the finger position, control the image to change with the user's operation, and then turn the merchant's ordinary glass window into an oversized interactive advertising touch screen.

[0053] The installation of a double-sided display window film on the glass will not affect the original good lighting of the glass. After sunset, it can also project high-definition double-sided video display images, which are presented in an automatically controlled manner and can attract more attention.

[0054] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A double-sided display window film, characterized in that, it includes: an imaging layer, a first conductive layer, a liquid crystal molecule layer, a second conductive layer and a reflective layer; the liquid crystal molecule layer is located between the first conductive layer and the second conductive layer; the first conductive layer, the liquid crystal molecule layer and the second conductive layer are located between the imaging layer and the reflective layer; the material of the imaging layer is a polymer dispersed liquid crystal material, the material of the reflective layer is a one-way reflection material, and the materials of the first conductive layer and the second conductive layer are indium tin oxide conductive materials.

2. The double-sided display window film according to claim 1, characterized in that, the double-sided display window film further includes: a window film input interface connected to the first conductive layer and the second conductive layer.

3. A control device for connecting the double-sided display window film according to claim 2, characterized in that, it includes: a power supply module, a control module and a processing module; the power supply module includes: a power input interface, a peripheral power supply interface, a control module power supply interface and a processing module power supply interface; the control module includes: a control module input interface connected to the control module power supply interface, a toroidal transformer connected to the control module input interface, a relay switch connected to the toroidal transformer, a window film power supply interface connected to the relay switch, a first interface of a projection device, a first interface of the processing module, and a central processing unit connected to the relay switch, the first interface of the projection device and the first interface of the processing module; the processing module includes: a processing module input interface connected to the processing module power supply interface, a second interface of the processing module connected to the first interface of the processing module, and a first video interface; the window film input interface of the double-sided display window film is connected to the window film power supply interface of the control device.

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