3D naked eye display device for vending machine

Abstract

The invention discloses a 3D naked-eye display device for a vending machine, and relates to the technical field of 3D naked-eye display devices.The 3D naked-eye display device comprises the vending machine, a first glass substrate and a second glass substrate are arranged on the front side of the vending machine, and a liquid crystal layer is arranged between the first glass substrate and the second glass substrate; an ITO vertical wall and an ITO transverse electrode are arranged on one side, close to the second glass substrate, of the first glass substrate; a plurality of V-shaped grooves are formed in the first glass substrate. The system has the advantages that through design and connection, a display system integrating electric field accurate control, ambient light self-adaption and 3D view field expansion is formed, the problems of electric field crosstalk and view angle limitation in traditional 3D display are solved, energy consumption is reduced through intelligent adjustment, the practicability and reliability of equipment in a commercial scene are improved, and the system is suitable for popularization and application. And a more attractive commodity display effect is provided for the vending machine.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D naked-eye display devices, and particularly to a 3D naked-eye display device for vending machines. Background Art

[0002] The 3D naked-eye display device on a vending machine is mainly used to display products with a stereoscopic visual effect. Compared with 2D images, it is more likely to attract consumers' attention. Stereoscopic display can enhance the attention to products, promote purchase decisions, and present images with a sense of depth without the need for users to wear special glasses.

[0003] In terms of ambient light adaptability, if the device cannot adjust according to the light intensity, it is easy to produce glare on the glass surface under strong light, resulting in blurred 3D images and reduced contrast. In weak light, it may cause dizziness due to excessive brightness, making the display effect unstable and affecting the user's viewing experience and product display effect. The problem of electric field crosstalk will cause the electric fields of adjacent liquid crystal partitions to interfere with each other, resulting in double images, position offsets of 3D images, weakened stereoscopic effects, and even image distortion in severe cases, making it impossible to accurately present product details. These two problems not only reduce the clarity and authenticity of 3D display but also limit the usage scenarios of the device, making it difficult to work properly in outdoor strong light or complex lighting environments, and at the same time affecting the user's perception of products, thereby weakening the product attractiveness and marketing effect of vending machines. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems of ambient light adaptability and electric field crosstalk in the prior art, and to propose a 3D naked-eye display device for vending machines.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions: A 3D naked-eye display device for vending machines, including a vending machine. A first glass substrate and a second glass substrate are arranged on the front side of the vending machine. A liquid crystal layer is arranged between the first glass substrate and the second glass substrate. An ITO vertical wall and an ITO horizontal electrode are arranged on the side of the first glass substrate close to the second glass substrate; a plurality of V-shaped grooves are formed on the first glass substrate, and insulating glue is filled in the plurality of V-shaped grooves. The plurality of V-shaped grooves are aligned with the position of the ITO vertical wall to block the electric field crosstalk between adjacent partitions; a plurality of photoresistors and a plurality of swing blades are arranged on the side of the second glass substrate close to the vending machine, and the photoresistors are used to detect the ambient light intensity to control the swing blades to adjust the light transmittance of the glass.

[0006] In the above 3D naked-eye display device for vending machines, the ITO vertical wall is formed on the first glass substrate through photolithography and etching processes. The ITO horizontal electrode covers the top of the ITO vertical wall, and the ITO vertical wall and the ITO horizontal electrode form an orthogonal grid to divide the liquid crystal layer into a plurality of independent partitions.

[0007] In the above-mentioned 3D naked-eye display device for a vending machine, the orthogonal grid formed by the ITO vertical walls and ITO horizontal electrodes independently controls the voltage of each partition through a matrix driving method, which is used to change the molecular orientation of the liquid crystal layer and achieve dynamic adjustment of the partition focal length.

[0008] In the above-mentioned 3D naked-eye display device for a vending machine, the V-grooves are formed on the first glass substrate through a laser etching process, and the insulating glue is used to fill the V-grooves and form an insulating barrier to avoid crosstalk of the electric fields between adjacent partitions.

[0009] In the above-mentioned 3D naked-eye display device for a vending machine, a motor is fixedly arranged in the vending machine, and the motor is electrically connected to a plurality of photosensitive resistors. A rotating shaft is fixedly installed at the driving end of the motor. A plurality of fixing blocks are fixedly arranged on one side of the first glass substrate inside the vending machine. A plurality of rotating rods are rotatably arranged on the plurality of fixing blocks. One of the rotating rods is fixedly connected to one end of the rotating shaft. A belt transmission mechanism is arranged between the plurality of rotating rods, and a plurality of swing blades are arranged on the corresponding rotating rods.

[0010] In the above-mentioned 3D naked-eye display device for a vending machine, the surfaces of the plurality of swing blades are coated with a superhydrophobic coating to reduce dust adhesion. The angle adjustment range of the swing blades is 0-90°, and the dynamic adjustment of the swing blades is realized through the detection signal of the photosensitive resistor.

[0011] In the above-mentioned 3D naked-eye display device for a vending machine, two OLED screen devices are further arranged on the second glass substrate. A first thin film encapsulation layer is closely attached to the second glass substrate. Two metal vias are formed on the first thin film encapsulation layer. The OLED screen devices are connected to a connecting transparent metal sheet through the two metal vias. A first transparent electrode is commonly arranged between the two connecting transparent metal sheets. Silver nanowires are commonly installed between the first transparent electrode and the second glass substrate. A second transparent electrode coupled to the first transparent electrode is arranged on the first transparent electrode, and the liquid crystal layer is distributed between the first transparent electrode and the second transparent electrode. The second transparent electrode is a transparent metal oxide electrode. The first thin film encapsulation layer, the first transparent electrode, and the second transparent electrode are all in a film shape. The first transparent electrode is closely attached to the second glass substrate, and the second transparent electrode is closely attached to the first glass substrate, covering the entire effective display area.

[0012] In the above-mentioned 3D naked-eye display device for a vending machine, an elastic diaphragm is arranged between the liquid crystal layer and the first glass substrate. The elastic diaphragm is used to adjust the thickness of the liquid crystal layer and cooperate with the ITO vertical walls and ITO horizontal electrodes to realize partition focal length adjustment.

[0013] In the above-mentioned 3D autostereoscopic display device for a vending machine, a frame sealant is provided between the first glass substrate and the second glass substrate, and the frame sealant is used to seal the liquid crystal layer.

[0014] In the above-mentioned 3D autostereoscopic display device for a vending machine, a plurality of microprisms are provided on the first glass substrate, and the plurality of microprisms are aligned with a plurality of ITO vertical wall partitions for guiding the emitted light to different viewing angle regions.

[0015] Compared with the existing technology, the advantages of the present invention are as follows: Through design and connection, a display system integrating precise electric field control, ambient light adaptability, and 3D field of view expansion is formed. It not only solves the problems of electric field crosstalk and limited viewing angle in traditional 3D displays, but also reduces energy consumption through intelligent adjustment, improves the practicality and reliability of the device in commercial scenarios, and provides a more attractive product display effect for vending machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a 3D autostereoscopic display device for a vending machine proposed by the present invention; Figure 2 is a schematic structural diagram inside the vending machine 1 in the present invention; Figure 3 In the present invention Figure 2 is an enlarged schematic structural diagram of part a; Figure 4 In the present invention Figure 2 is an enlarged schematic structural diagram of part b; Figure 5 is a top view of the first glass substrate and the second glass substrate in the present invention; Figure 6 In the present invention Figure 5 is a structural cross-sectional view along the A-A direction; Figure 7 In the present invention Figure 5 is an exploded schematic structural diagram; Figure 8 In the present invention Figure 7 is an enlarged schematic structural diagram of part c.

[0017] In the figure: 1, vending machine; 2, first glass substrate; 3, rotating shaft; 4, swing leaf; 5, rotating rod; 6, fixed block; 7, second glass substrate; 8, frame sealant; 9, photoresistor; 10, OLED screen device; 11, first thin film encapsulation layer; 12, silver nanowire; 13, connecting transparent metal sheet; 14, first transparent electrode; 15, liquid crystal layer; 16, second transparent electrode; 17, ITO horizontal electrode; 18, ITO vertical wall; 19, elastic diaphragm; 20, insulating glue; 21, V-shaped groove. Detailed implementation mode

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Refer to Figures 1-8 , a 3D naked-eye display device for a vending machine, including a vending machine 1. A first glass substrate 2 and a second glass substrate 7 are arranged on the front side of the vending machine 1. A liquid crystal layer 15 is arranged between the first glass substrate 2 and the second glass substrate 7. A frame adhesive 8 is arranged between the first glass substrate 2 and the second glass substrate 7. The frame adhesive 8 is used to seal the liquid crystal layer 15. An ITO vertical wall 18 and an ITO horizontal electrode 17 are arranged on one side of the first glass substrate 2 close to the second glass substrate 7. A plurality of microprisms are arranged on the first glass substrate 2. The plurality of microprisms are aligned with the plurality of ITO vertical walls 18 in zones, so as to direct the emitted light to different viewing angle regions, expand the visible range of 3D display, enable multiple people to clearly view from different angles, improve the user experience. After the light is deflected by the microprisms, it matches the zonal focal length, expands the viewing angle, reduces the picture drift when the viewer moves, and reduces the sense of dizziness.

[0020] The ITO vertical wall 18 is formed on the first glass substrate 2 through photolithography and etching processes, with a height of 1-3 μm. The ITO horizontal electrode 17 covers the top of the ITO vertical wall 18. The ITO vertical wall 18 and the ITO horizontal electrode 17 form an orthogonal grid, which divides the liquid crystal layer 15 into multiple independent zones. Each of the multiple independent zones can independently control the electrical signals of each region. By changing the orientation of the liquid crystal molecules in the liquid crystal layer 15, focal length adjustment is achieved, so that the display picture can be dynamically adjusted according to requirements, solving the problem that traditional planar electrodes cannot perform local light control, and improving the flexibility of display. The orthogonal grid formed by the ITO vertical wall 18 and the ITO horizontal electrode 17 independently controls the voltage of each zone through a matrix driving method, and is used to change the orientation of the molecules in the liquid crystal layer 15 to achieve dynamic adjustment of the zonal focal length.

[0021] A plurality of V-shaped grooves 21 are formed on the first glass substrate 2. Each of the plurality of V-shaped grooves 21 is filled with an insulating adhesive 20. The V-shaped grooves 21 are formed on the first glass substrate 2 through a laser etching process. The insulating adhesive 20 is used to fill the V-shaped grooves 21 and form an insulating barrier. The V-shaped grooves 21 and the insulating adhesive 20 form a physical barrier to block the mutual interference of the electric fields in adjacent regions, avoiding the display ghosting phenomenon, making the 3D picture clearer and more stable, and used to avoid the crosstalk of the electric fields in adjacent zones. The corresponding plurality of V-shaped grooves 21 are aligned with the positions of the ITO vertical walls 18 to block the crosstalk of the electric fields in adjacent zones.

[0022] An OLED screen device 10 is also provided on the second glass substrate 7. The self-luminous characteristic of the OLED screen device 10 realizes high-contrast display. A first thin-film encapsulation layer 11 is closely attached to the second glass substrate 7. The first thin-film encapsulation layer 11 protects the device from the influence of the external environment and extends the service life, which is suitable for the long-term operation of the vending machine 1. Two metal vias are formed on the first thin-film encapsulation layer 11. The OLED screen device 10 is connected to a connecting transparent metal sheet 13 through the two metal vias. A first transparent electrode 14 is commonly provided between the two connecting transparent metal sheets 13. A silver nanowire 12 is commonly installed between the first transparent electrode 14 and the second glass substrate 7. The first transparent electrode 14 uses the silver nanowire 12 as a conductive carrier, and the silver nanowire 12 is uniformly distributed on the surface of the second glass substrate 7 through processes such as spin coating, spraying, or printing, and then through heat treatment or chemical cross-linking curing to form a transparent conductive film covering the entire display area (only for illustration in the figure). A second transparent electrode 16 coupled to the first transparent electrode 14 is provided on the first transparent electrode 14, and a liquid crystal layer 15 is distributed between the first transparent electrode 14 and the second transparent electrode 16. The second transparent electrode 16 is a transparent metal oxide electrode. The first thin-film encapsulation layer 11, the first transparent electrode 14, and the second transparent electrode 16 are all in a thin-film shape. The first transparent electrode 14 is closely attached to the second glass substrate 7, and the second transparent electrode 16 is closely attached to the first glass substrate 2, covering the entire effective display area.

[0023] An elastic diaphragm 19 is provided between the liquid crystal layer 15 and the first glass substrate 2. The elastic diaphragm 19 is used to adjust the thickness of the liquid crystal layer 15, and cooperate with the ITO vertical wall 18 and the ITO horizontal electrode 17 to achieve zonal focal length adjustment. The elastic diaphragm 19 cooperates with the ITO horizontal electrode 17 to adjust the focal length mechanically and electrically, dynamically optimize the display effect according to the position of the person, enhance the 3D stereoscopic sense, and reduce energy consumption at the same time. The deformation signal of the elastic diaphragm 19 and the voltage signal of the ITO horizontal electrode 17 are jointly controlled by a single-chip microcomputer (usually an independent control module (such as the main board area) is provided inside the vending machine 1 for integrating components such as a drive circuit and a sensor interface. The single-chip microcomputer is used as the core control unit. Installing it here can facilitate the connection of components such as an infrared sensor and a motor drive circuit, reducing the wiring complexity) to form a closed-loop feedback system. An infrared sensor is installed inside the vending machine 1, and a micro-push rod is installed between the elastic diaphragm 19 and the first glass substrate 2. The micro-push rod is also controlled by the single-chip microcomputer. The infrared sensor detects the position of the user, the single-chip microcomputer calculates the required focal length, controls the micro-push rod to push the elastic diaphragm 19 to change the thickness of the liquid crystal layer 15, and adjusts the voltage of the corresponding zonal ITO horizontal electrode 17 at the same time to achieve dual focal length adjustment. This method is only activated for adjustment when the position of the user changes, and the overall power consumption is lower than that of the traditional scheme. The silver nanowire 12 serves as the drive electrode of the OLED screen device 10. The silver nanowire 12 transmits the voltage signal output by the single-chip microcomputer to the liquid crystal layer 15, and cooperates with the second transparent electrode 16 to form an electric field to drive the change of the orientation of liquid crystal molecules, achieving zonal focal length adjustment.

[0024] On one side of the second glass substrate 7 close to the vending machine 1, a plurality of photoresistors 9 and a plurality of swing blades 4 are provided. The photoresistors 9 are used to detect the ambient light intensity to control the swing blades 4 to adjust the glass light transmittance. A motor is fixedly arranged in the vending machine 1, and the motor is electrically connected to the plurality of photoresistors 9. A rotating shaft 3 is fixedly installed at the driving end of the motor. On one side of the first glass substrate 2 located in the vending machine 1, a plurality of fixing blocks 6 are fixedly arranged. A rotating rod 5 is rotatably arranged on each of the plurality of fixing blocks 6. One of the rotating rods 5 is fixedly connected to one end of the rotating shaft 3. A belt transmission mechanism is arranged between the plurality of rotating rods 5. A plurality of swing blades 4 are respectively arranged on the corresponding rotating rods 5. A superhydrophobic coating is coated on the surfaces of the plurality of swing blades 4 to reduce dust adhesion. The angle adjustment range of the swing blades 4 is 0-90°. The dynamic adjustment of the swing blades 4 is realized through the detection signal of the photoresistors 9. The photoresistors 9 sense the strength of the ambient light in real time. A PLC controller (prior art, not elaborated in detail here) is installed in the vending machine 1. The PLC controller is electrically connected to the photoresistors 9 and the motor. The motor is a servo motor. When the photoresistors 9 receive the light intensity, they control the rotation angle of the motor, drive the plurality of rotating rods 5 through the rotating shaft 3 to drive the swing blades 4 to adjust the angle, so as to realize the shading adjustment of the first glass substrate 2 and the second glass substrate 7 and automatically adjust the glass light transmittance. When the light is strong, the rotation angle increases, so that the shielding formed by the swing blades 4 increases, reducing the reflection. When the light is weak, the rotation angle decreases, improving the brightness, making the display content clearly visible under different lighting conditions, making it easier for people to be attracted by the 3D effect, and at the same time reducing dust adhesion and reducing the maintenance requirements.

[0025] Further explanation, the above fixed connection, unless otherwise clearly specified and limited, should be understood in a broad sense. For example, it can be welding, gluing, or integrally formed setting, etc., which are common means well-known to those skilled in the art.

[0026] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A 3D autostereoscopic display device for a vending machine, comprising a vending machine (1), characterized in that, A first glass substrate (2) and a second glass substrate (7) are provided on the front side of the vending machine (1). A liquid crystal layer (15) is provided between the first glass substrate (2) and the second glass substrate (7). An ITO vertical wall (18) and an ITO horizontal electrode (17) are provided on one side of the first glass substrate (2) close to the second glass substrate (7); a plurality of V-shaped grooves (21) are formed in the first glass substrate (2), and an insulating adhesive (20) is filled in each of the plurality of V-shaped grooves (21). The corresponding plurality of V-shaped grooves (21) are aligned with the position of the ITO vertical wall (18) to block the electric field crosstalk between adjacent partitions; a plurality of photoresistors (9) and a plurality of swing blades (4) are provided on one side of the second glass substrate (7) close to the vending machine (1). The photoresistors (9) are used to detect the ambient light intensity to control the swing blades (4) to adjust the glass light transmittance.

2. The 3D autostereoscopic display device for a vending machine according to claim 1, characterized in that, The ITO vertical wall (18) is formed on the first glass substrate (2) through a photolithography and etching process. The ITO horizontal electrode (17) covers the top of the ITO vertical wall (18). The ITO vertical wall (18) and the ITO horizontal electrode (17) form an orthogonal grid, which divides the liquid crystal layer (15) into a plurality of independent partitions.

3. The 3D autostereoscopic display device for a vending machine according to claim 1, wherein, The orthogonal grid formed by the ITO vertical wall (18) and the ITO horizontal electrode (17) independently controls the voltage of each partition through a matrix driving method, so as to change the molecular orientation of the liquid crystal layer (15) and realize the dynamic adjustment of the partition focal length.

4. A 3D naked-eye display device for a vending machine according to claim 1, characterized in that, The V-shaped grooves (21) are formed on the first glass substrate (2) through a laser etching process. The insulating adhesive (20) is used to fill the V-shaped grooves (21) and form an insulating barrier to avoid the crosstalk of the electric field between adjacent partitions.

5. A 3D autostereoscopic display device for a vending machine according to claim 1, characterized in that, A motor is fixedly provided in the vending machine (1), and the motor is electrically connected to a plurality of photoresistors (9). A rotating shaft (3) is fixedly installed at the driving end of the motor. A plurality of fixing blocks (6) are fixedly provided on one side of the first glass substrate (2) located in the vending machine (1). A rotating rod (5) is rotatably provided on each of the plurality of fixing blocks (6). One of the rotating rods (5) is fixedly connected to one end of the rotating shaft (3). A belt transmission mechanism is provided between the plurality of rotating rods (5). A plurality of swing blades (4) are respectively provided on the corresponding rotating rods (5).

6. The 3D autostereoscopic display device for a vending machine according to claim 5, wherein Superhydrophobic coatings are coated on the surfaces of the plurality of swing blades (4) to reduce dust adhesion. The angle adjustment range of the swing blades (4) is 0-90°, and the dynamic adjustment of the swing blades (4) is realized through the detection signals of the photoresistors (9).

7. The 3D naked-eye display device for a vending machine according to claim 1, wherein There are also two OLED screen devices (10) provided on the second glass substrate (7). A first thin film encapsulation layer (11) is closely attached to the second glass substrate (7). There are two metal vias formed on the first thin film encapsulation layer (11). The OLED screen devices (10) are connected to connecting transparent metal sheets (13) through the two metal vias. A first transparent electrode (14) is commonly provided between the two connecting transparent metal sheets (13). Silver nanowires (12) are commonly installed between the first transparent electrode (14) and the second glass substrate (7). A second transparent electrode (16) coupled with the first transparent electrode (14) is provided on the first transparent electrode (14), and a liquid crystal layer (15) is distributed between the first transparent electrode (14) and the second transparent electrode (16). The second transparent electrode (16) is a transparent metal oxide electrode. The first thin film encapsulation layer (11), the first transparent electrode (14), and the second transparent electrode (16) are all in a thin film shape. The first transparent electrode (14) is closely attached to the second glass substrate (7), and the second transparent electrode (16) is closely attached to the first glass substrate (2), covering the entire effective display area.

8. The 3D naked-eye display device for a vending machine according to claim 3, wherein, An elastic diaphragm (19) is provided between the liquid crystal layer (15) and the first glass substrate (2). The elastic diaphragm (19) is used to adjust the thickness of the liquid crystal layer (15), and cooperate with the ITO vertical walls (18) and the ITO horizontal electrodes (17) to achieve zonal focal length adjustment.

9. The 3D autostereoscopic display device for a vending machine according to claim 1, wherein, A frame adhesive (8) is provided between the first glass substrate (2) and the second glass substrate (7). The frame adhesive (8) is used to seal the liquid crystal layer (15).

10. The 3D naked-eye display device for a vending machine according to claim 1, wherein, A plurality of microprisms are provided on the first glass substrate (2). The plurality of microprisms are aligned with the plurality of ITO vertical walls (18) in zones, and are used to direct the outgoing light to different viewing angle regions.

Images