A summary of the touch screen all-in-one machine's application field

Views: 315     Author: Reshine display     Publish Time: 2023-10-13      Origin: Site


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A summary of the touch screen all-in-one machine's application field

What fields can a touch control all-in-one machine be used in, according to China Touch Screen Online News on April 14, Beijing time? With the advancement of science and technology in recent years, the number of intelligent devices has increased, and the use of touch-control all-in-one machines has expanded once more. According to different use scenarios, the industrial and commercial fields where the touch control all-in-one machine is most widely used today have different sizes, functions, materials, and product types.

1. Finance

We no longer have to wait in line for banking transactions. Simply select the banking business processing form with the touch-integrated machine located at the bank entrance to obtain a waiting number, and then proceed to the window to complete business when the number is called by the broadcast or staff. Furthermore, simple and quick banking transactions no longer require going to the window for processing with the equal sign. The intelligent touch all-in-one machine can handle it. This field is currently one of the primary battlegrounds for Huayang Technology's all-in-one machine products.

2. Intelligent self-service technology

In recent years, the touch control all-in-one machine has been widely used in unmanned retail self-service devices, smart express cabinets, meal collection cabinets, power exchange cabinets, and other smart cabinet devices, particularly the 10-inch, 15.6 inch, 21.5 inch, and other touch screen all-in-one machine products. Huayang Technology touchscreen all-in-one machines have been used extensively in the smart cabinet field. Because of the spread of the epidemic, unmanned self-service devices are once again popular, and demand is growing.

3. On-board management

In the field of automobile manufacturing, the on-board display control motherboard primarily employs the integrated processor of an intelligent industrial control machine, industrial display touch, and so on to effectively improve touch screen sensitivity, display screen clarity, and so on, which is more conducive to car owners' use.

4. Service and industrial robots

The touch control all-in-one machine is essential whether it is an industrial robot or a service robot. With the development of commercial service robots in recent years, various service robots such as meal delivery robots, welcome robots, disinfection and sterilization robots, and distribution robots have entered the market, and then the touch control all-in-one machine products have been widely used in various robot fields. Huayang Technology's 10.1-inch and 21.5-inch all-in-one machines are now in use in the field of service robots.

5. Graphene's advantages and key technologies in touch screens

According to China Touch Screen News, graphene flexible touch screen ushers in a new era in the field of electronic consumption on March 24, Beijing time.

With the advancement of science and technology since the twenty-first century, great changes have occurred in our lives all the time. People's needs are changing as a result of the popularity of computers and mobile phones, as well as the iterative updating of various electronic products. The introduction of touchscreen technology has made life, learning, and entertainment more efficient and convenient.

There are many different types of modern touch screens, including resistive touch screens, capacitive touch screens, infrared technology touch screens, surface acoustic technology touch screens, and so on, with capacitive and resistive touch screens being the most common. Regardless of whether the touch screen is capacitive or resistive, the ITO conductive layer in the middle is an essential core component.

With its advantages of high conductivity, toughness, strength, and transparency, graphene has emerged as a new material in emerging industries. It contains high-tech content and has a wide range of application possibilities. The flexible touch screen made of graphene rather than ITO can achieve perfect unity between mobile phones and computers, ushering in a new era of change in the consumer electronics field.

The benefits of graphene material in touch screen applications

Graphene is a new two-dimensional material with only one atomic layer. It has exceptional properties in mechanics, heat, optics, and electricity, among others. Graphene has obvious application advantages in touch screens, and its main advantages are as follows: (1) Graphene is almost completely transparent, and the transmittance of a single-layer graphene film from ultraviolet, visible, to infrared bands is as high as 97.7%, so it will not be color-biased; (2) Graphene is almost completely transparent, and the transmittance of a single-layer graphene film from ultraviolet, visible, to infrared.

(2) The graphene transparent electrode effectively resolves the conflict between conductivity and transmittance. The graphene material is only one carbon atom layer thick, and its carrier mobility is extremely high, making it the material with the highest conductivity discovered thus far;

(3) Graphene has extremely high mechanical strength and is very soft (it can even be folded to some extent);

(4) Graphene's chemical properties are stable, and its properties are less affected by the environment.

(5) Graphene is a carbon material with a single atomic layer, which is non-toxic.

(6) The content of carbon elements in nature is very rich, so using graphene as the electrode has fewer restrictions on raw materials.

Key Technologies in Graphene Touch Screen

Large-area graphene films are typically grown at high temperatures on copper foil and other metal substrates. Graphene must be transferred from the growth substrate to the required substrate surface before it can be used. The graphene touch screen manufacturing process is divided into four steps: graphene transfer, modification, patterning, and capacitive screen module preparation, to improve these four steps.

Graphene film transfer key technologies

There are numerous transfer methods for graphene films, with the two most common being the transfer method based on a PMMA sacrificial layer and the transfer method based on pyrolytic tape. The former method involves spin-coating graphene with polymethyl methacrylate (PMMA), etching copper with an acid solution, transferring graphene to the target substrate, and finally removing PMMA with acetone. This method is simple and widely used in laboratories; the latter method involves adhering the heat-release tape to graphene/copper foil, etching copper with acid, adhering the graphene/heat release tape to the target substrate, and finally releasing graphene via heat transfer. The heat-release tape transfer method is useful for large-area applications, and it also allows you to control the shape of the transferred graphene by cutting the tape. As a result, for the graphene touch screen, the heat-release tape transfer graphene method is more practical.

Key Technology of Graphene Film Modification

Graphene films must also be modified and strengthened based on the application requirements. The graphene film must be further enhanced in conductivity while maintaining high light transmittance for the graphene touch screen. In the case of specific carrier mobility, increasing the carrier concentration of graphene via doping modification is an important way to improve graphene conductivity. The valence band and conduction band of intrinsic graphene are in conical contact at the center of the Brillouin zone, so it is a semiconductor or semi-metal with zero band gap; the energy band level structure can be changed to form a doping effect similar to that of semiconductors through surface adsorption, lattice vacancy, lattice replacement doping, and other methods. There are numerous graphene-doped modifiers available today, including nitric acid, chloroauric acid, conductive polymer, and others. Immersion, fumigation, in-situ composite, and spin coating are some of the modification techniques used.

Graphene film patterning key technologies

Graphene is a two-dimensional material made of carbon atoms that has excellent chemical stability. In general, etching graphene with acid and alkali is difficult. As a result, etching graphene under the existing touch process line conditions will be a significant challenge in the process of realizing a capacitive touch screen with graphene. General methods for etching graphene include two aspects.: (1) Because graphene is a very thin material with only one atomic layer thickness, it can be removed by high-energy bombardment; (2) Because graphene is composed of carbon atoms, it can be thought to react with oxygen and other substances under special conditions to remove graphene. There are three etching methods for graphene-based on this: laser etching, oxygen plasma etching, and oxygen ultraviolet etching. Among them, the graphene laser etching method is the most basic. Simultaneously, existing industrial equipment can achieve graphene patterns of 10 micrometers to meet the needs of large-scale factory preparation.

Key technologies of graphene touch module

The graphene touch module manufacturing process is divided into two stages: front sensor and back bonding. The front bonding process is used to realize the capacitive touch screen sensor, while the back bonding process is used to bond the sensor to the touch chip to form a finished graphene capacitive touch screen. Silk screen printing and etching of silver paste, bonding of graphene sensor and touch chip, bonding of cover plate, and defoaming are the main process steps. The graphene sensor and touch chip, for example, are electrically connected via a flexible printed circuit board (FPC), which necessitates binding and bonding with ACF adhesive under specific pressure and high-temperature conditions.

Summary and outlook

Because of their properties, graphene materials have a wide range of applications in the field of touch screens. Leading domestic and international companies have already begun to conduct patent layouts in related fields, but there are still many issues to be resolved in the mass production of graphene touch screens. As a result, domestic relevant enterprises must continue to increase R&D investment to break through the giants' patent blockade, while also strengthening cooperation with universities or scientific research institutions, actively promoting the combination of production, teaching, and research, and focusing on the transfer, modification, graphitization of graphene, and the preparation of capacitive screen modules to accelerate industrialization.

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