Method for displaying and expanding nano-silver touch color film

Abstract

The invention discloses a nano-silver touch color film display expansion method which comprises the following steps: S1, manufacturing a nano-silver touch layer: dispersing synthesized nano-silver wire particles in an organic solvent to prepare nano-silver ink, and depositing the nano-silver wire particles on a flexible transparent substrate film by adopting a coating process to form the nano-silver touch layer, a stable nano-silver conductive network is provided; s2, a high-definition color film layer is manufactured, wherein the high-definition color film layer is manufactured in a high-definition printing mode; s3, a nano-silver touch control color film layer is manufactured, wherein the nano-silver touch control color film layer comprises a nano-silver touch control layer and a high-definition color film layer, the surface of the nano-silver touch control layer is coated with a color film transparent adhesive, and the high-definition color film layer is attached; and S4, the nano-silver touch color film layer is attached to the original display screen, and the nano-silver touch color film layer is accurately attached to the original display screen by adopting a high-precision vacuum equipment automatic alignment system and using a display screen transparent adhesive and a color film transparent adhesive, so that the attaching precision is within 100 micrometers.

Description

Technical Field

[0001] The present invention belongs to the field of touch display technology, and in particular relates to a method for expanding a nano-silver touch color film display. Background Art

[0002] In today's consumer electronics sector, users are increasingly demanding more screen real estate. Traditional displays, due to their inherent technical limitations, face numerous challenges when attempting to expand their display area. First, the space occupied by the bezel is a major factor limiting the expansion of display area. Even if the device's physical dimensions allow for a larger screen, the actual display area is limited. Second, the synergy between touch and display functions is suboptimal, impacting the user experience and hindering overall device performance.

[0003] Nanosilver materials, with their excellent electrical properties, have shown broad application prospects in many fields. However, the application of nanosilver materials in display expansion technology from small screens to large screens and the realization of good capacitive touch functions still require in-depth exploration and innovation. Although there are various display technologies on the market that attempt to solve the above problems, such as adopting thinner frame designs or expanding the display area by adding additional touch layers, these methods are often accompanied by increased manufacturing costs, increased process complexity, and the possibility of reducing the overall reliability and durability of the equipment. Therefore, how to effectively utilize the unique advantages of nanosilver materials and overcome the shortcomings of existing technologies has become a key issue that needs to be solved urgently. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the purpose of the present invention is to provide a method for expanding the display of nanosilver touch color film. By utilizing the unique electrical properties and optimized preparation process of nanosilver, adopting special nanosilver synthesis and dispersion technology, precise bonding process and innovative display area expansion algorithm, the following problems existing in the existing technology are solved.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows: A method for expanding a nano-silver touch color film display comprises the following steps:

[0006] S1. Fabricating a nanosilver touch layer: dispersing synthesized nanosilver wire particles in an organic solvent to prepare a nanosilver ink, and depositing the nanosilver wire particles on a flexible transparent substrate film using a coating process to form the nanosilver touch layer having a stable nanosilver conductive network;

[0007] S2, manufacturing a high-definition color film layer: manufacturing the high-definition color film layer by high-definition printing;

[0008] S3, preparing a nano-silver touch color film layer: the nano-silver touch color film layer includes the nano-silver touch layer and the high-definition color film layer, by coating a color film transparent adhesive on the surface of the nano-silver touch layer and laminating the high-definition color film layer;

[0009] S4. Laminating the nano-silver touch color film layer to the original display screen, wherein the touch sensing area of ​​the nano-silver touch color film layer exceeds the physical frame of the original display screen, and using a high-precision vacuum equipment automatic alignment system, a display screen transparent adhesive and the color film transparent adhesive, the nano-silver touch color film layer and the original display screen are precisely laminated to achieve a lamination accuracy of within 100 microns.

[0010] Compared with the existing technology, the beneficial effect of the present invention is that the present invention significantly expands the effective display area by laminating a touch color film layer composed of nano silver wires on the basis of the original display screen. This expansion does not simply increase the screen size, but without changing the overall appearance of the device, by precisely controlling the patterned coating of the nano silver wire conductive network and the use of a flexible transparent base film, the touch sensing area can be covered outside the physical frame of the original display screen. A visual effect close to "borderless" is achieved. In addition, the present application uses high-definition printing to produce a high-definition color film layer, and uses a color film transparent adhesive and a display screen transparent adhesive for lamination, ensuring good optical matching between the functional layers. This design not only improves color reproduction and image clarity, but also reduces interface reflection and light loss, further enhancing the contrast and layering of the picture.

[0011] In the above method, between steps S1 and S2, the flexible transparent base film is subjected to a low-temperature thermal annealing treatment at a temperature of 50-120 degrees Celsius to remove the organic solvent and improve the bonding force between the nanosilver particles.

[0012] In the above method, when depositing the silver nanowire particles on the flexible transparent base film in step S1, the coating should be performed according to a preset pattern.

[0013] In the above method, the touch response time of the nano-silver touch color film layer in step S3 is less than 50 milliseconds.

[0014] In the above method, the coating process in step S1 is performed by inkjet printing or spin coating.

[0015] In the above method, the original display screen mentioned in step S4 may also be a curved screen or a special-shaped screen.

[0016] In the above method, the organic solvent in step S1 is ethylene glycol or ethylene glycol methyl ether.

[0017] In the above method, the flexible transparent base film in step S1 is a polyimide film.

[0018] In the above method, the color film transparent adhesive is made of optically transparent adhesive or the optically transparent resin, and the display screen transparent adhesive is made of optically transparent adhesive or the optically transparent resin.

[0019] In the above method, the high-precision vacuum equipment automatic alignment system includes a capture feedback system, a precision mechanical control system, and a vacuum adsorption device. The capture feedback system captures the marked points on the nano-silver touch color film layer to accurately align the nano-silver touch color film layer with the original display screen. The precision mechanical control system uses a high-performance servo motor and a high-resolution encoder. The vacuum adsorption device can remove air and impurities between the nano-silver touch color film layer and the original display screen to prevent bubble formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a flow chart of a method for manufacturing a nano-silver touch color film display screen according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the nano-silver touch color film layer according to an embodiment of the present invention;

[0022] Figure 3 This is the second schematic diagram of the structure of the nano-silver touch color film layer according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic structural diagram of a nano-silver touch color film display screen according to an embodiment of the present invention;

[0024] Explanation of the accompanying drawings: 110 nanometer silver touch layer, 120 high-definition color film layer, 100 nanometer silver touch color film layer, 200 original display screen, 300 color film transparent adhesive, 400 display screen transparent adhesive. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below. Figures 1 to 4The embodiment of the present invention provides a method for expanding a nano-silver touch color film display, comprising the following steps: S1, preparing a nano-silver touch layer 110: dispersing synthesized nano-silver wire particles in an organic solvent to prepare a nano-silver ink, and using a coating process to deposit the nano-silver wire particles on a flexible transparent substrate film to form a nano-silver touch layer 110 having a stable nano-silver conductive network; S2, preparing a high-definition color film layer 120: using a high-definition printing method to prepare the high-definition color film layer 120; S3, preparing a nano-silver touch color film layer 100: the nano-silver touch color film layer 100 includes a nano-silver touch The nano-silver touch color filter layer 110 and the high-definition color filter layer 120 are laminated by coating a color filter transparent adhesive 300 on the surface of the nano-silver touch layer 110 and laminating the high-definition color filter layer 120; S4, laminating the nano-silver touch color filter layer 100 to the original display screen 200, wherein the touch sensing area of ​​the nano-silver touch color filter layer 100 exceeds the physical frame of the original display screen 200, and using a high-precision vacuum equipment automatic alignment system, using a display screen transparent adhesive 400 and a color filter transparent adhesive 300, the nano-silver touch color filter layer 100 and the original display screen 200 are precisely laminated to achieve a lamination accuracy of less than 100 microns. The present invention significantly expands the effective display area by laminating a touch color filter layer composed of nano-silver wires on the original display screen 200. This expansion does not simply increase the screen size, but rather, without changing the overall appearance of the device, through the precise control of the patterned coating of the nano-silver wire conductive network and the use of a flexible transparent base film, the touch sensing area can be covered beyond the physical frame of the original display screen. This achieves a near-borderless visual effect. Furthermore, this application utilizes high-definition printing to produce the high-definition color filter layer 120, and laminating it with a transparent color filter adhesive 300 to ensure good optical compatibility between the functional layers. This design not only improves color reproduction and image clarity, but also reduces interface reflection and light loss, further enhancing the contrast and layering of the image.

[0026] Further, refer to Figure 3 and Figure 4After the silver nanowire conductive network is formed, it becomes the base layer of the entire touch color film, providing the necessary conductive function and touch sensing capabilities. This silver nanowire conductive network is the core component of the silver nanowire touch color film layer 100, responsible for detecting user input signals. During the lamination process of the high-definition color film layer 120 and the silver nanowire touch color film layer 100, the silver nanowire conductive network has been formed and exists as a complete silver nanowire touch layer. By applying the color film transparent adhesive 300, the high-definition unit pattern is bonded to the silver nanowire touch layer 110, achieving an effective combination of the silver nanowire touch layer 110 and the high-definition color film layer 120. This combination not only maintains the conductive properties of the silver nanowire conductive network, but also enhances the stability and reliability of the overall structure. Furthermore, the use of silver nanowire material can avoid the problem of fracture caused by brittleness, making it particularly suitable for flexible or foldable devices. Furthermore, between steps S1 and S2, the flexible transparent base film is subjected to a low-temperature thermal annealing treatment at a temperature of 50-120 degrees Celsius to remove organic solvents and improve the bonding strength between the silver nanowire particles. Low-temperature thermal annealing can effectively remove residual organic solvents in the nanosilver ink. If these solvents are not completely removed, they may evaporate during subsequent use, causing defects or instability in the nanosilver wire conductive network, thereby affecting touch sensitivity and reliability. By precisely controlling the annealing temperature (50-120°C), the organic solvent can be fully evaporated without damaging the flexible transparent substrate film, thereby ensuring the quality of the nanosilver wire conductive network. Secondly, low-temperature thermal annealing helps to improve the bonding force between nanosilver particles. Appropriate heat treatment can promote the diffusion and recombination of atoms on the surface of nanosilver particles to form a closer contact interface, which not only improves the overall stability of the nanosilver conductive network, but also enhances its mechanical strength and durability. Especially in flexible display applications, this enhanced bonding force enables the nanosilver touch layer 110 to maintain good conductivity and touch response speed even when repeatedly bent or folded.

[0027] Furthermore, refer to Figure 2 and Figure 3In step S1, when depositing the silver nanowire particles on the flexible transparent base film, the coating is performed according to a preset pattern. Using a preset pattern coating method, touch-sensitive areas with specific shapes and functions can be customized according to actual needs. For example, in some product designs, only certain areas may need to have touch functions, while other areas are used for display or other purposes. By precisely controlling the distribution of the silver nanowires, efficient space utilization can be achieved while avoiding unnecessary material waste. Moreover, the preset pattern coating provides greater flexibility for different display device types (such as curved screens, special-shaped screens, etc.). It can adapt to various complex screen shapes and size requirements, ensuring ideal touch effects on both flat and curved surfaces. Furthermore, in step S2, the high-definition color filter layer 120 is produced using a high-definition printing method, which not only ensures color reproduction and resolution, but also improves the overall display quality. The combination of the high-definition color filter layer 120 and the nanosilver touch layer 110 enables the expansion of touch functions without sacrificing the visual experience. Furthermore, the touch response time of the nanosilver touch color filter layer 100 in step S3 is less than 50 milliseconds. Touch response time refers to the time interval from when a user's finger or stylus touches the screen to when the system recognizes and responds. It is one of the important indicators for measuring the interactive smoothness of touch devices. Furthermore, the coating process in step S1 is performed by inkjet printing or spin coating. Inkjet printing and spin coating are both low-temperature processes, compatible with subsequent low-temperature thermal annealing treatments. They can complete the construction of a high-quality conductive layer without damaging the flexible substrate, which facilitates lightweight and thin designs. This provides strong support for flexible touch display systems. Furthermore, the present invention does not limit the specific type of the original display screen 200. Preferably, the original display screen 200 mentioned in step S4 can also be a curved screen or a special-shaped screen. Traditional touch display technologies are mostly based on planar structural designs, making them difficult to adapt to emerging display formats such as curved and special-shaped screens. However, the present invention utilizes a flexible transparent substrate film and a patterned coating process, allowing the nanosilver touch color filter layer 100 to flexibly adhere to various non-standard display surface shapes, thereby achieving perfect matching with special-shaped structures such as curves, corners, and arcs. Of course, the present invention does not limit the specific type of the organic solvent in step S1. Preferably, the organic solvent in step S1 is ethylene glycol or ethylene glycol methyl ether. Ethylene glycol and ethylene glycol methyl ether are commonly used high-boiling point, low-volatility solvents with good solubility and stability. They can effectively prevent the agglomeration of silver nanowires during storage and coating, thereby ensuring the uniformity and stability of the ink. This is crucial for achieving high-quality, high-precision conductive networks. Furthermore, the present invention does not limit the specific type of the flexible transparent substrate film in step S1. Preferably, the flexible transparent substrate film in step S1 is a polyimide film. Polyimide film (PI film) is known for its excellent high temperature resistance, chemical stability and mechanical properties, and can maintain structural integrity and functional stability under extreme environments.This is especially important for touch layers that need to undergo annealing or other high-temperature processes. Secondly, the PI film has good transparency and flexibility, high light transmittance, and is not prone to cracks or breaks after repeated bending or folding, making it very suitable as a substrate for flexible touch devices. This characteristic enables the present invention to be widely used in cutting-edge products such as wearable devices, folding mobile phones, and flexible displays. Furthermore, the present invention does not limit the specific materials of the color film transparent adhesive 300 and the display screen transparent adhesive 400. Preferably, the color film transparent adhesive 300 is made of optically transparent adhesive or optically transparent resin, and the display screen transparent adhesive 400 is made of optically transparent adhesive or optically transparent resin. Both optically transparent adhesive (OCA) and optically transparent resin (OCR) have excellent transmittance and refractive index matching, which can minimize light reflection and loss between the functional layers, thereby improving display brightness, contrast and color saturation. This is particularly important for the close bonding between the high-definition color film layer 120 and the nano-silver touch color film layer 100.

[0028] Furthermore, the high-precision vacuum equipment automatic alignment system mentioned in step S4 of the present invention includes a capture feedback system, a precision mechanical control system, and a vacuum adsorption device. The capture feedback system captures the marking points on the nanosilver touch color film layer 100 to accurately align the nanosilver touch color film layer 100 with the original display screen 200. The precision mechanical control system uses a high-performance servo motor and a high-resolution encoder, and the vacuum adsorption device can remove air and impurities between the nanosilver touch color film layer 100 and the original display screen 200 to prevent bubble formation. The capture feedback system recognizes the marking points on the nanosilver touch color film layer 100 to achieve precise positioning between the nanosilver touch color film layer 100 and the original display screen 200. This automatic alignment technology based on image recognition greatly improves the bonding accuracy, ensuring that the bonding error is controlled within 100 microns, thereby avoiding touch area misalignment or display abnormalities caused by offset. The precision mechanical control system utilizes high-performance servo motors and high-resolution encoders, enabling high-precision control of the bonding process, including precise adjustment of speed, pressure, angle, and other parameters. This ensures a smooth and controllable bonding process, further improving bonding quality. The vacuum adsorption device effectively removes air and impurities between the nano-silver touch color film layer 100 and the original display screen 200 through vacuuming, preventing air bubbles and ensuring complete bonding between the bonding surfaces, improving optical transmittance and the stability of touch signal transmission. This is particularly critical for high-definition displays and high-sensitivity touch screens.

[0029] It should be noted that in the description of the present invention, if there are any descriptions of directions, such as up, down, front, back, left, right, etc., the directions or positional relationships indicated are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed or operate in a specific direction, and cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, "several" means one or more, "more" means two or more, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If there are descriptions of "first," "second," and so on, these are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A method for expanding a nano-silver touch color film display, characterized in that: The following steps are involved: S1. preparing a nanosilver touch layer (110): dispersing synthesized nanosilver wire particles in an organic solvent to prepare a nanosilver ink, and depositing the nanosilver wire particles on a flexible transparent substrate film using a coating process to form the nanosilver touch layer (110) having a stable nanosilver conductive network; S2, manufacturing a high-definition color film layer (120): manufacturing the high-definition color film layer (120) by adopting a high-definition printing method; S3, manufacturing a nano-silver touch color film layer (100): the nano-silver touch color film layer (100) comprises the nano-silver touch layer (110) and the high-definition color film layer (120), and coating a color film transparent adhesive (300) on the surface of the nano-silver touch layer (110) and laminating the high-definition color film layer (120); S4, laminating the nano-silver touch color film layer (100) to the original display screen (200), wherein the touch sensing area of ​​the nano-silver touch color film layer (100) exceeds the physical frame range of the original display screen (200), and using a high-precision vacuum equipment automatic alignment system, using a display screen transparent adhesive (400) and the color film transparent adhesive (300), the nano-silver touch color film layer (100) and the original display screen (200) are precisely laminated to achieve a lamination accuracy of within 100 microns.

2. The method according to claim 1, characterized in that The flexible transparent substrate film is subjected to a low-temperature thermal annealing treatment between steps S1 and S2, wherein the treatment temperature is 50-120 degrees Celsius to remove the organic solvent and improve the binding force between the nanosilver particles.

3. The method according to claim 1, characterized in that When depositing the silver nanowire particles on the flexible transparent base film in step S1, coating is performed according to a preset pattern.

4. The method according to claim 1, wherein The touch response time of the nano silver touch color film layer (100) in step S3 is less than 50 milliseconds.

5. The method according to claim 1, characterized in that The coating process in step S1 is performed by inkjet printing or spin coating.

6. The method according to claim 1, characterized in that The original display screen (200) mentioned in step S4 may also be a curved screen or a special-shaped screen.

7. The method according to claim 1, characterized in that The organic solvent in step S1 is ethylene glycol or ethylene glycol methyl ether.

8. The method according to claim 1, characterized in that The flexible transparent base film in step S1 is a polyimide film.

9. The method according to claim 1, characterized in that The color film transparent adhesive (300) is made of optically transparent adhesive or the optically transparent resin, and the display screen transparent adhesive (400) is made of optically transparent adhesive or the optically transparent resin.

10. The method according to claim 1, characterized in that The high-precision vacuum equipment automatic alignment system comprises a capture feedback system, a precision mechanical control system, and a vacuum adsorption device. The capture feedback system captures the marking points on the nano-silver touch color film layer (100), and accurately aligns the nano-silver touch color film layer (100) with the original display screen (200). The precision mechanical control system adopts a high-performance servo motor and a high-resolution encoder. The vacuum adsorption device can remove air and impurities between the nano-silver touch color film layer (100) and the original display screen (200), thereby preventing the formation of bubbles.

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