Light and thin anti-interference curved surface low-temperature heating touch display

Abstract

The invention provides a light and thin anti-interference curved-surface low-temperature heating touch display, which relates to the technical field of curved-surface displays, and comprises a liquid crystal screen assembly which is used for displaying images and is formed by sequentially laminating a curved-surface touch screen assembly, a two-in-one film and a curved-surface liquid crystal panel; the structural component wraps and protects the liquid crystal screen component and the circuit component to form an integrated mechanical packaging structure; the circuit assembly provides driving signals and power supply for the liquid crystal screen assembly; the two-in-one film is formed by compounding a metal wire net film and a transparent flexible heating film through back glue, the curvature radius of the two-in-one film is matched with that of the curved-surface liquid crystal panel, and the two-in-one film is fully attached to the position over the curved-surface liquid crystal panel through optical glue. The method is used for solving the technical problems that the traditional heating mode of the current curved surface touch display is a liquid crystal screen built-in ITO thin film heating mode, the cost is high, and external ITO conductive glass heating is only suitable for a flat panel display.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of curved displays, and particularly relates to a thin, lightweight, anti-interference, curved, low-temperature heating touch display. Background Art

[0002] With the continuous development of military display technology, people's visual requirements for display products are getting higher and higher, and curved touch displays are gradually becoming a new development trend. However, the working environment in the military field is extremely harsh. For curved touch displays such as military aircraft and ship cockpits, the displays generally require the functions of being thin, lightweight, operating at a wide temperature range, and anti-electromagnetic interference. Therefore, thin, lightweight, anti-interference, curved, low-temperature heating touch displays will be more and more favored.

[0003] At present, the electromagnetic shielding function of curved touch displays is achieved through ITO glass for shielding. This method has low shielding efficiency, and the ITO glass needs to be thermally bent, resulting in low yield and high cost.

[0004] At present, the traditional heating methods for curved touch displays are two methods: heating with an ITO film built into the liquid crystal screen or heating with an external ITO conductive glass. Heating with an ITO film built into the liquid crystal screen is designed during the preparation process of the liquid crystal screen, and the cost is expensive. Although the external ITO conductive glass heating method can enable the liquid crystal screen to display better and faster at low temperatures, it is only applicable to flat panel displays. For curved touch displays, the external ITO conductive glass heating cannot meet its usage requirements.

[0005] It should be noted that the above content belongs to the technical cognition scope of the inventor. Due to the vast and extremely complex technical content in this field, the above content of this application does not necessarily constitute the prior art. Summary of the Invention

[0006] 1. Technical problems to be solved by the invention: The present invention provides a thin, lightweight, anti-interference, curved, low-temperature heating touch display to solve the technical problems existing in the above background art.

[0007] 2. Technical solutions: To achieve the above object, the technical solution provided by the present invention is: a thin, lightweight, anti-interference, curved, low-temperature heating touch display, comprising a liquid crystal screen assembly for displaying images, which is sequentially laminated by a curved touch screen assembly, a two-in-one film, and a curved liquid crystal panel; a structural assembly that wraps and protects the liquid crystal screen assembly and the circuit assembly to form an integrated mechanical encapsulation structure; a circuit assembly that provides driving signals and power supply for the liquid crystal screen assembly; The two-in-one film is composed of a wire mesh and a transparent flexible heating film, which are compounded by adhesive. Its radius of curvature matches that of the curved liquid crystal panel, and it is fully attached to the upper side of the curved liquid crystal panel through optical glue.

[0008] In this embodiment, the two-in-one film made by compounding a wire mesh and a transparent flexible heating film with adhesive is applied to the curved touch screen assembly, which can effectively shield external electromagnetic wave interference from weak internal signals and prevent high-frequency electromagnetic waves generated by internal video and other signals from leaking. The entire liquid crystal screen assembly is placed in the structural assembly. During operation, the circuit assembly enables the liquid crystal screen group to work properly. The wire mesh can be directly compounded with the heating film through adhesive, which requires fewer processes compared to vacuum sputtering coating, and the yield rate is increased by more than 15%. The method of electromagnetic shielding through the wire mesh can reduce the manufacturing cost of the curved touch screen.

[0009] Furthermore, the circuit assembly is electrically connected to the transparent flexible heating film to control its heating function.

[0010] Furthermore, the wire mesh is an irregular wire mesh with a thickness of 0.2 mm and a mesh count of 250 meshes.

[0011] Furthermore, the sheet resistance of the transparent flexible heating film is 5 - 200 ohms / sq, the thickness is 0.007 inches, and it can be dynamically bent to adapt to the curved deformation.

[0012] Furthermore, the structural assembly includes a metal frame, which locks the edge of the liquid crystal screen assembly through the cooperation of buckles and screws; and an elastic buffer layer, which is filled in the force-bearing contact surface between the liquid crystal screen assembly and the metal frame.

[0013] Furthermore, the two-in-one film and the curved liquid crystal panel are fully attached using optical glue with a refractive index match.

[0014] Furthermore, the circuit assembly also includes a temperature sensor and a heating control module.

[0015] 3. Beneficial effects: Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects: The present invention is reasonably designed. By compounding a wire mesh and a transparent flexible heating film into a two-in-one film, it synchronously realizes the functions of electromagnetic shielding and low-temperature heating, solves the problems such as increased thickness and low bonding yield rate caused by the need for independent laminated shielding layers and heating films in traditional curved displays, and at the same time ensures curvature matching and dynamic bending stability; The irregular metal wire mesh (0.2mm / 250 mesh) eliminates moiré patterns and has a light transmittance of 86 - 89%; the heating film has a sheet resistance of 5 - 200 ohms / sq in combination with a thickness of 0.007 inches, enabling low-temperature and rapid startup and low power consumption; the optical glue is fully bonded to ensure display consistency; The metal frame and the elastic buffer layer form an integrated package, which combines mechanical reinforcement and sealing protection; the circuit component integrates temperature sensing and adaptive power regulation, simplifies the design of the peripheral circuit, and reduces the overall manufacturing cost by more than 20%.

[0016] It should be noted that the structures not described in the present invention are the same as the prior art or can be implemented using the prior art since they do not involve the design key points and improvement directions of the present invention, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the curved liquid crystal screen assembly of the present invention.

[0018] Reference Signs: 1. Liquid crystal screen assembly; 2. Structural component; 3. Circuit component; 4. Curved touch screen component; 5. Two-in-one film; 6. Curved liquid crystal panel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] For ease of understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0022] In the present invention, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", "provided with", "arranged on" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] It should be noted that the structures not introduced in the present invention can all adopt the existing technologies known to those skilled in the art since they do not involve the design key points and improvement directions of the present invention.

[0024] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0025] Referring to the attached Figure 1-2 , a thin and light anti-interference curved surface low-temperature heating touch display, comprising a liquid crystal screen assembly 1 for displaying images, which is composed of a curved surface touch screen assembly 4, a two-in-one film 5, and a curved surface liquid crystal panel 6 stacked in sequence; a structural assembly 2 that covers and protects the liquid crystal screen assembly 1 and the circuit assembly 3 to form an integrated mechanical packaging structure; a circuit assembly 3 that provides driving signals and power supply for the liquid crystal screen assembly 1; The two-in-one film 5 is composed of a metal wire mesh and a transparent flexible heating film compounded by an adhesive. Its radius of curvature matches that of the curved surface liquid crystal panel 6 and is fully adhered to the upper part of the curved surface liquid crystal panel 6 through an optical adhesive.

[0026] In this embodiment, the two-in-one film 5 made by compounding a metal wire mesh and a transparent flexible heating film by an adhesive is pasted on the curved surface touch screen assembly 4, which can effectively shield external electromagnetic wave interference from weak internal signals and prevent the leakage of high-frequency electromagnetic waves generated by internal video and other signals. The entire liquid crystal screen assembly 1 is placed in the structural assembly 2. When working, the circuit assembly 3 enables the liquid crystal screen group to work normally. The metal wire mesh can be directly compounded with the heating film through an adhesive, which requires fewer processes compared with vacuum sputtering coating, and the yield rate is increased by more than 15%. The electromagnetic shielding method through the metal wire mesh can reduce the manufacturing cost of the curved surface touch screen.

[0027] The circuit component 3 is electrically connected to the transparent flexible heating film to control its heating function. In a low-temperature environment, the transparent flexible heating film is heated through the circuit component 3, thereby realizing the function of low-temperature startup of the display.

[0028] The metal wire mesh is an irregular wire mesh with a thickness of 0.2 mm and a mesh count of 250. Traditional regular grids such as squares or hexagons will generate moiré patterns with the liquid crystal pixel array, while the irregularly distributed metal wire mesh can disrupt periodic interference, enabling the display to maintain a pure picture even in a curved state. The 0.2 mm thickness ensures uniform internal stress distribution when the metal wire mesh is bent, and the 250-mesh metal wire mesh can achieve a visible light transmittance of 86 - 89%.

[0029] The sheet resistance of the transparent flexible heating film is 5 - 200 ohms / sq, and the thickness is 0.007 inches. It can be dynamically bent to adapt to curved surface deformation. The sheet resistance range of 5 - 200 ohms / sq enables the heating film to quickly heat up to above 20°C with a low voltage of 12 - 24V in a -30°C environment, avoiding the safety hazard of traditional high-resistance films > 500 ohms / sq that require high voltage drive > 36V.

[0030] The structural component 2 includes a metal frame that locks the edge of the liquid crystal screen component 1 through the cooperation of buckles and screws; and an elastic buffer layer that fills the force-bearing contact surface between the liquid crystal screen component 1 and the metal frame. The elastic buffer layer also has a sealing effect, which can protect and seal the internally wrapped liquid crystal screen component 1.

[0031] The two-in-one film 5 and the curved liquid crystal panel 6 are fully bonded with an optical glue with a refractive index match to ensure a good display effect.

[0032] The circuit component 3 further includes a temperature sensor and a heating control module. The heating control module receives the signal transmitted by the temperature sensor and automatically adjusts the heating film power according to the ambient temperature.

[0033] The above embodiments only represent a certain implementation manner of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention; therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A thin and lightweight anti-interference curved surface low-temperature heating touch display, characterized in that: including a liquid crystal screen assembly (1) for displaying images, which is sequentially stacked by a curved surface touch screen assembly (4), a two-in-one film (5) and a curved surface liquid crystal panel (6); a structural assembly (2) that covers and protects the liquid crystal screen assembly (1) and the circuit assembly (3) to form an integrated mechanical encapsulation structure; a circuit assembly (3) that provides driving signals and power supply for the liquid crystal screen assembly (1); the two-in-one film (5) is composed of a metal wire mesh and a transparent flexible heating film compounded by an adhesive. Its radius of curvature matches that of the curved surface liquid crystal panel (6), and it is fully adhered to the upper part of the curved surface liquid crystal panel (6) by an optical adhesive.

2. The thin and lightweight anti-interference curved surface low-temperature heating touch display according to claim 1, characterized in that: The circuit assembly (3) is electrically connected to the transparent flexible heating film to control its heating function.

3. The thin and lightweight anti-interference curved surface low-temperature heating touch display according to claim 1, wherein: The metal wire mesh is an irregular wire mesh with a thickness of 0.2 mm and a mesh count of 250 meshes.

4. A thin and light anti-interference curved surface low-temperature heating touch display according to claim 1, characterized in that: The sheet resistance of the transparent flexible heating film is 5 - 200 ohms / sq, the thickness is 0.007 inches, and it can be dynamically bent to adapt to the curved surface deformation.

5. A thin and lightweight anti-interference curved surface low-temperature heating touch display according to claim 1, characterized in that: The structural assembly (2) includes a metal frame that locks the edge of the liquid crystal screen assembly (1) through the cooperation of a buckle and a screw; and an elastic buffer layer that fills the force contact surface between the liquid crystal screen assembly (1) and the metal frame.

6. The thin and light anti-interference curved surface low-temperature heating touch display according to claim 1, wherein: The two-in-one film (5) and the curved surface liquid crystal panel (6) are fully adhered by an optical adhesive with a refractive index match.

7. A thin and light anti-interference curved surface low-temperature heating touch display according to claim 1, characterized in that: The circuit assembly (3) further includes a temperature sensor and a heating control module.

Images