A surface-variable screen body

Abstract

A surface variable screen body includes a first substrate, a second substrate, and a surface film; the surface variable screen body has at least one variable region; at the variable region, a first gap is formed between the first substrate and the second substrate, and a first electrode and a second electrode are respectively provided on the inner sides of the first substrate and the second substrate; the variable region includes an inactive region and an active region, the surface film is adhered to the outer side of the first substrate at the inactive region, and a second gap is formed between the surface film and the outer side of the first substrate at the active region; through holes are provided on the first substrate; the first gap, the second gap, and the through holes are filled with liquid; when a voltage is applied between the first electrode and the second electrode, the electrostatic force generated by the first electrode and the second electrode causes the first substrate and the second substrate to attract each other, squeezing the liquid in the first gap into the second gap, so that the surface film bulges at the active region. A protrusion can be formed on the surface of this surface variable screen body to simulate a physical button, avoiding distracting the user's attention.

Description

Technical Field

[0001] The present invention relates to the technical field of touch screens, and particularly to a surface variable screen body. Background Art

[0002] With the development of intelligence, touch screens are more and more widely used in various occasions. The characteristic of a touch screen is that it can display different interactive interfaces, and users can interact according to different interactive interfaces, thus greatly increasing the content that can be interacted with.

[0003] However, when the existing touch screens are interacting, since there is no tactile feeling of physical buttons, users cannot confirm the positions of interactive objects such as buttons through tactile feeling, and they need to confirm by visual inspection. Therefore, when such touch screens are applied in occasions such as automobiles and industrial control devices, they will distract the users' attention and easily lead to accidents. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a surface variable screen body. The surface of this surface variable screen body can form protrusions to simulate physical buttons, so that users can confirm the positions of the buttons without visual inspection or only need to take a glance, avoiding distraction of the users' attention. The adopted technical solution is as follows:

[0005] A surface variable screen body includes a first substrate and a second substrate bonded to each other, and a surface film attached to the outer side of the first substrate; it is characterized in that: the surface variable screen body has at least one variable area; at the variable area, a closed first gap is formed between the first substrate and the second substrate, and a first electrode and a second electrode are respectively provided on the inner side surface of the first substrate and the inner side surface of the second substrate; the variable area includes a non-active area and an active area surrounded by the non-active area, the surface film is bonded to the outer side surface of the first substrate at the non-active area, and a closed second gap is formed between the surface film and the outer side surface of the first substrate at the active area; at least one through hole for communicating the first gap and the second gap is provided on the first substrate; the first gap, the second gap and the through hole are filled with liquid; when a voltage is applied between the first electrode and the second electrode, the electrostatic force generated between the first electrode and the second electrode causes the first substrate and the second substrate to attract each other and generate an inward concave deformation, compressing the first gap, and squeezing the liquid in the first gap into the second gap, so that the surface film bulges at the active area and changes the shape of the surface of the surface variable screen body at the variable area.

[0006] The above-mentioned surface variable screen can be applied to a touch display screen. The variable area can be controlled by a circuit to form protrusions on the surface of the surface variable screen, and combined with the display of the display at the bottom of the variable area, the pattern and shape of a physical button can be simulated. The user can identify the button according to the feel when touching, so that the user can confirm the position of the button without having to look with the naked eye (or only need to take a look), avoiding distracting the user's attention; when the user presses the button, the pressing action of the user can also be sensed through pressure, so its experience is very close to that of a physical button; when the button is not needed, the variable area can be controlled by a circuit not to form protrusions on the surface of the surface variable screen, maintaining the flatness of the screen. Of course, the above-mentioned surface variable screen can also be used as a three-dimensional logo or decoration of the display screen.

[0007] As a preferred embodiment of the present invention, the first substrate and the second substrate are glass substrates. Specifically, the first substrate and the second substrate can adopt glass substrates with a thickness between 0.3 mm and 1.5 mm.

[0008] As a preferred embodiment of the present invention, the first substrate and the second substrate are adhesively bonded to each other through at least one sealing ring disposed outside the variable area. At the variable area, a first gap is formed between the first substrate and the second substrate and surrounded by the sealing ring. The sealing ring can be a photosensitive resin rubber ring, a thermosetting resin rubber ring or an epoxy resin rubber ring, and the thickness of the first gap is determined by the sealing ring (generally, spacer balls with a certain particle size are mixed in the sealing ring to maintain the thickness of the sealing ring).

[0009] As a further preferred embodiment of the present invention, the thickness of the first gap is 10 μm to 200 μm.

[0010] In order to make the first gap have better resilience, as a further preferred embodiment of the present invention, spacer balls are clamped between the first substrate and the second substrate at the variable area. The material of the spacer balls can be plastic or glass, and the diameter or particle size of the spacer balls is equivalent to the thickness of the first gap.

[0011] As a preferred embodiment of the present invention, the thickness of the first substrate and / or the second substrate is less than 0.7 mm. Thus, it is more easily deformed to squeeze the second gap.

[0012] As a preferred embodiment of the present invention, the surface film is a plastic film or a rubber film. Specifically, the surface film can be a PET, PVC, PC, PI, PU film or a silicone film, and its thickness is generally 0.1 to 0.3 mm.

[0013] As another preferred embodiment of the present invention, the surface film is a glass film with a thickness not greater than 0.2 mm. The glass film has better barrier properties and can effectively isolate the leakage of the liquid.

[0014] As another preferred embodiment of the present invention, the surface film is a composite film composed of a glass film and a plastic film.

[0015] As a further preferred embodiment of the present invention, a functional film layer is deposited on the surface of the surface film. The functional film layer can be an anti-glare, anti-reflection, anti-fingerprint film layer, etc.

[0016] As a preferred embodiment of the present invention, the surface film and the outer side of the first substrate are adhered through an adhesive layer provided at the non-active area. Specifically, the adhesive layer can be composed of a photosensitive resin, a thermosetting resin, an epoxy resin, etc.

[0017] As a preferred embodiment of the present invention, the first electrode and the second electrode are patterned electrodes formed by patterning a metal film (such as a molybdenum-aluminum-molybdenum thin film) or a transparent conductive film (such as an indium tin oxide thin film). Usually, a circuit is also provided on the surface variable screen body that connects the first electrode and the second electrode to the outside of the surface variable screen body, so as to apply a voltage to the first electrode and the second electrode. The voltage input between the first electrode and the second electrode can be a DC voltage input or an AC voltage input.

[0018] The above liquid can be a transparent oil with good stability and insulation, such as organic oil or silicone oil; the liquid can also be an insulating glue liquid or liquid crystal with low viscosity.

[0019] In order to ensure that the surface of the surface variable screen body has better flatness, as a preferred embodiment of the present invention, the through hole is a drill hole opened on the first substrate. The number of drill holes can be one or more, and the diameter of the through hole is not greater than 1 mm.

[0020] To ensure that there is sufficient adsorption force between the first and second substrates, as a preferred embodiment of the present invention, the overlapping area of the first electrode and the second electrode is not less than 90% of the variable area.

[0021] As a further preferred embodiment of the present invention, the area of the variable area is larger than the area of the active area. Thus, when a voltage is applied to the first electrode and the second electrode, more liquid is squeezed into the second gap, and the surface film bulges more in the active area.

[0022] As a further preferred embodiment of the present invention, the area of the variable area is more than 10 times that of the active area.

[0023] As a preferred embodiment of the present invention, the active area is in the middle of the variable area. This facilitates the flow of liquid between the first gap and the second gap.

[0024] The number of the above variable areas can be multiple. Different variable areas are independently controlled, and the first gaps between different variable areas are not connected through a sealing ring provided between the first substrate and the second substrate.

[0025] The above active area can be in the shape of a common button (such as circular or square), or can be designed in the shape of a special icon, etc.

[0026] In order to make the above surface variable screen body a transparent screen, as a preferred solution of the present invention, the first substrate and the second substrate are transparent plate bodies, the surface film is a transparent film, the first electrode and the second electrode are transparent electrodes, and the liquid is a transparent liquid. Such a surface variable screen body can be arranged in front of flat panel displays such as LCD, OLED, LED (such as miniLED), so that the display can display patterns corresponding to the deformation of the active area, such as button patterns.

[0027] In order to make the above variable surface screen have a touch function, a touch circuit of a touch screen (especially a capacitive touch screen) (such as a circuit composed of a transparent conductive layer) can also be arranged in the above surface variable screen body. Specifically, it can be arranged on the inner side surfaces of the first substrate and the second substrate and be on the same layer as or share the first electrode and the second electrode. In the case of sharing, a capacitive touch signal with a relatively high frequency of capacitance can also be loaded in the first electrode and the second electrode, without affecting the DC or low-frequency driving of the first electrode and the second electrode. The touch circuit can also be arranged on the outer side surface of the first substrate, or on the inner side surface or inside of the surface film. The surface film can be made into a composite film layer, and the touch circuit is clamped inside the surface film; in addition, a pressure sensing plate can be arranged inside the variable surface screen (or inside the display), so that when a hand presses the surface of the variable surface screen, the pressure of the hand can be sensed.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] Such a surface variable screen body can be applied to a touch display screen. Its variable area can form protrusions on the surface of the surface variable screen body through circuit control, and then combined with the display of the display at the bottom of the variable area, simulating the pattern and shape of a physical button, so that the user can confirm the position of the button without having to look with the naked eye (or only need to take a glance), avoiding distracting the user's attention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of a preferred embodiment of the present invention.

[0031] Figure 2 is Figure 1 a perspective view of

[0032] Figure 3 is a schematic diagram of the state when a voltage is applied between the first electrode and the second electrode in a preferred embodiment of the present invention.

[0033] Figure 4 is Figure 3 a perspective view of Detailed implementation mode

[0034] As Figures 1-4 shown, this surface variable screen body includes a first substrate 1 and a second substrate 2 that are adhesively bonded to each other, and a surface film 3 attached to the outer side surface of the first substrate 1; the surface variable screen body has at least one variable area 10; at the variable area 10, a closed first gap 20 is formed between the first substrate 1 and the second substrate 2, and a first electrode 4 and a second electrode 5 are respectively provided on the inner side surface of the first substrate 1 and the inner side surface of the second substrate 2; the variable area 10 includes an inactive area 101 and an active area 102 surrounded by the inactive area 101, the surface film 3 is adhesively bonded to the outer side surface of the first substrate 1 at the inactive area 101, and a closed second gap 30 is formed between the surface film 3 and the outer side surface of the first substrate 1 at the active area 102; at least one through hole 11 for communicating the first gap 20 and the second gap 30 is provided on the first substrate 1; a liquid 6 is filled in the first gap 20, the second gap 30 and the through hole 11; when a voltage is applied between the first electrode 4 and the second electrode 5, the electrostatic force generated between the first electrode 4 and the second electrode 5 causes the first substrate 1 and the second substrate 2 to attract each other and generate a deformation of concave inward, compressing the first gap 20, and squeezing the liquid 6 in the first gap 20 into the second gap 30, so that the surface film 3 bulges at the active area 102 and changes the shape of the screen body surface at the variable area 10.

[0035] In this embodiment, the first substrate 1 and the second substrate 2 are made of glass substrates with a thickness less than 0.7 mm. Thus, it is easier to deform and squeeze the second gap 30.

[0036] In this embodiment, the first substrate 1 and the second substrate 2 are adhesively bonded to each other through a sealing ring 7 provided outside the variable area 10; at the variable area 10, a first gap 20 is formed between the first substrate 1 and the second substrate 2 and surrounded by the sealing ring 7, and the thickness of the first gap 20 is 10 μm to 200 μm. The sealing ring 7 can be a photosensitive resin rubber ring, a thermosetting resin rubber ring or an epoxy resin rubber ring, and the thickness of the first gap 20 is determined by the sealing ring 7 (generally, spacer balls with a certain particle size are mixed in the sealing ring 7, so as to maintain the thickness of the sealing ring 7). In order to make the first gap 20 have better resilience, spacer balls 8 are clamped between the first substrate 1 and the second substrate 2 at the variable area 10. The material of the spacer balls 8 can be plastic or glass, and the diameter or particle size of the spacer balls 8 is equivalent to the thickness of the first gap 20.

[0037] In this embodiment, the surface film 3 is a plastic film or a rubber film, such as PET, PVC, PC, PI, PU film or silicone film, and its thickness is 0.1 - 0.3 mm. In addition, the surface film 3 can also be a glass film with a thickness not greater than 0.2 mm; the glass film has better isolation performance and can effectively isolate the leakage of the liquid 6. In addition, the surface film 3 can also be a composite film composed of a glass film and a plastic film, and a functional film layer, such as an anti-glare, anti-reflection, anti-fingerprint film layer, can be plated on the surface of the surface film 3.

[0038] In this embodiment, the surface film 3 is adhered to the outer side surface of the first substrate 1 through an adhesive layer 9 provided at the non-active area 101, and the adhesive layer 9 can be composed of a photosensitive resin, a thermosetting resin or an epoxy resin, etc.

[0039] In this embodiment, the first electrode 4 and the second electrode 5 are patterned electrodes formed by patterning a metal film (such as a molybdenum-aluminum-molybdenum thin film) or a transparent conductive film (such as an indium tin oxide thin film). A circuit connecting the first electrode 4 and the second electrode 5 to the outside of the surface variable screen body is also provided on the surface variable screen body, so as to apply a voltage to the first electrode 4 and the second electrode 5, and the voltage input between the first electrode 4 and the second electrode 5 can be a DC voltage input or an AC voltage input.

[0040] In this embodiment, the liquid 6 is a transparent oil with good stability and insulation performance, such as organic oil or silicone oil. In addition, the liquid 6 can also be an insulating glue liquid or liquid crystal with relatively low viscosity.

[0041] In order to ensure that the surface of the surface variable screen body has better flatness, in this embodiment, the through hole 11 is a drill hole opened on the first substrate 1, and the diameter of the through hole 11 is not greater than 1 mm.

[0042] In order to make the first and second substrates have sufficient adsorption force, in this embodiment, the overlapping area of the first electrode 4 and the second electrode 5 is not less than 90% of the variable area 10; the area of the variable area 10 is more than 10 times that of the active area 102. Thus, when a voltage is applied to the first electrode 4 and the second electrode 5, more liquid 6 is squeezed into the second gap 30, and the surface film 3 bulges more in the active area 102.

[0043] In this embodiment, the active area 102 is located in the middle of the variable area 10. Thus, it is convenient for the liquid 6 to flow between the first gap 20 and the second gap 30.

[0044] In addition, it should be noted that for the specific embodiments described in this specification, the names of their respective parts and the like may be different. Any equivalent or simple changes made according to the structure, features, and principles described in the inventive concept of this invention patent are included within the protection scope of this invention patent. Those skilled in the technical field to which this invention pertains can make various modifications, supplements, or use similar methods for substitution to the specific embodiments described, as long as they do not deviate from the structure of this invention or exceed the scope defined by this claims book, they should all fall within the protection scope of this invention.

Claims

1. A surface variable screen body, comprising a first substrate and a second substrate adhesively bonded to each other, and a surface film attached to the outer side surface of the first substrate; characterized in that: The surface variable screen body has at least one variable area; at the variable area, there is a closed first gap between the first substrate and the second substrate, and a first electrode and a second electrode are respectively provided on the inner side surface of the first substrate and the inner side surface of the second substrate; the variable area includes an inactive area and an active area surrounded by the inactive area, the surface film is adhered to the outer side surface of the first substrate at the inactive area, and a closed second gap is formed between the surface film and the outer side surface of the first substrate at the active area; at least one through hole for communicating the first gap and the second gap is provided on the first substrate; the first gap, the second gap and the through hole are filled with liquid; when a voltage is applied between the first electrode and the second electrode, the electrostatic force generated between the first electrode and the second electrode causes the first substrate and the second substrate to attract each other and generate an inward concave deformation, compressing the first gap and squeezing the liquid in the first gap into the second gap, so that the surface film bulges at the active area and changes the shape of the surface of the surface variable screen body at the variable area.

2. The surface variable screen body according to claim 1, wherein: The thickness of the first substrate and / or the second substrate is less than 0.7 mm; the first substrate and the second substrate are adhered to each other through at least one sealing ring provided outside the variable area. At the variable area, the first gap is formed by being surrounded by the sealing ring between the first substrate and the second substrate, and the thickness of the first gap is 10 μm to 200 μm.

3. A surface variable screen body according to claim 1, characterized in that: At the variable area, a spacer ball is clamped between the first substrate and the second substrate, and the material of the spacer ball is plastic or glass.

4. The surface variable screen body according to claim 1, characterized in that: The surface film is a plastic film or a rubber film; or, the surface film is a glass film with a thickness not greater than 0.2 mm; or, the surface film is a composite film composed of a glass film and a plastic film.

5. A surface variable screen body according to claim 1, characterized in that: The surface film is adhered to the outer side surface of the first substrate through an adhesive layer provided at the inactive area, and the adhesive layer is composed of a photosensitive resin, a thermosetting resin or an epoxy resin.

6. A surface variable screen body according to claim 1, characterized in that: The liquid is an organic oil or a silicone oil; or, the liquid is an insulating glue liquid or a liquid crystal.

7. A surface variable screen according to any one of claims 1-6, characterized in that: The first electrode and the second electrode are patterned electrodes formed by patterning a metal film or a transparent conductive film; the overlapping area of the first electrode and the second electrode is not less than 90% of the variable area.

8. The surface variable screen body according to claim 7, characterized in that: The area of the variable area is larger than the area of the active area; the active area is located in the middle of the variable area.

9. A surface variable screen body according to claim 8, characterized in that: The area of the variable area is more than 10 times that of the active area.

10. A surface variable screen according to any one of claims 1-6, characterized in that: The first substrate and the second substrate are transparent plates; the surface film is a transparent film; the first electrode and the second electrode are transparent electrodes; the liquid is a transparent liquid.

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