Description
IC752SPL013-BA Digital Signal Processor
IC752SPL013-BA Digital Signal Processor
Module Clips Drive controller servo moto
IC752SPL013-BA Digital Signal ProcessorSuitable for steel manufacturing, thermal power generation, hydroelectric power generation, nuclear power generation, wind power generation, gas supply, and other glass manufacturing, paper mills, mechanical manufacturing, electronic manufacturing, automotive manufacturing, aviation manufacturing, chemical manufacturing, coal mining and selection, oil and natural gas mining and selection, metal mining and selection, and non-metallic mining and selection
3. Infrared touch screen
The infrared touch screen uses a dense infrared matrix in the X and Y directions to detect and locate the user”s touch.
The infrared touch screen installs a circuit board frame in front of the display. The circuit board arranges infrared transmitting
tubes and infrared receiving tubes on the four sides of the screen, corresponding to a horizontal and vertical infrared matrix. When
a user touches the screen, his or her finger will block the horizontal and vertical infrared rays
passing through that location, and based on this, the
location of the touch point on the screen can be determined. Infrared touch screens have
the advantages of high light transmittance, no interference
from current, voltage and static electricity, and high touch stability. However, infrared touch screens will be affected by changes
in ambient light, remote controls, high-temperature objects, incandescent lamps and other infrared
sources. affect and reduce its accuracy. The early infrared touch screen appeared in
1992, with a resolution of only 32°32. It was susceptible to malfunction due to environmental interference
, and required to be used in a certain light-shielding environment.
After 20 years of development, the current advanced infrared touch screen has a service life of more than 7 years under normal working conditions.
When tracking finger movements, the accuracy, smoothness and tracking speed can meet the requirements, and the user”s writing can be converted very
smoothly. into an image trajectory and fully supports handwriting recognition input. Infrared touch screens are mainly used in various public places, offices
and industrial control places that do not require very precise requirements without infrared and strong light interference.
4. Sonic touch screen
surface acoustic wave touch screen
Surface acoustic wave touch screen is a touch technology that uses sound waves to position. At the four corners of the touch screen, sensors for transmitting
and receiving sound waves in the X and Y directions are pasted respectively, and 45° reflection stripes are engraved around it. When a finger touches the screen
, the finger absorbs part of the sound wave energy, and the controller detects the attenuation of the received signal at a
certain moment, thereby calculating the position of the touch point.
Surface acoustic wave technology is very stable and highly accurate. In addition to the X and Y coordinates that general touch screens can respond to, it also
responds to its unique third-axis Z-axis coordinate, which is the pressure axis response. With this function, each touch point is not just a digital switch with or
without touch, but an analog switch that can sense force: the greater the pressure, the greater the attenuation gap on the received signal waveform. The wider and deeper it is.
Among all types of touch screens, only surface acoustic wave touch screens have the ability to sense touch pressure. The surface acoustic wave touch screen
is not affected by environmental factors such as temperature and humidity. It has high clarity (extremely high resolution), good light transmittance, high durability,
good scratch resistance, responsive response, long life, and can maintain clear and translucent images. Quality, no drift, only need to be calibrated once during
installation, good anti-violence performance, most suitable for public information inquiry and use in offices, government
Curved sonic touch screen
The curved sonic touch screen is based on sound pulse recognition technology. When an object touches the surface of the touch screen, the sensor will
detect the frequency of the sound wave and determine the location of the touch point by comparing the frequency with the standard frequency pre-stored
in the chip. In this way, clothing, luggage, dust and Misidentification caused by environmental factors such as insects. The sound waves of the surface
type touch screen propagate along the surface of the substrate, while the sound waves of the curved type touch screen propagate inside the substrate,
so the anti-environmental interference performance of the curved type is better than that of the surface type. Currently, curved touch screens are generally used in i
nformation kiosks, financial equipment and vending machines that are larger than 5 inches.
5. Optical imaging touch screen
Optical imaging touch screen is a touch technology that uses light for positioning. Light sources and light capture sensors are set at the four corners
of the screen. When an object touches the surface of the touch screen, the light changes, and the touch IC module analyzes the light sensor. The change
determines the location of the touch. Optical imaging touch screens have high durability, are suitable for use in complex environments, and support multi-touch.
However, they are easily affected by ambient light, dust, insects, etc. and may cause misrecognition. Currently, this technology is
only used in desktop monitors above 10 inches, education/training, etc.
6. Electromagnetic induction touch screen
The sensor of the electromagnetic induction touch screen is set behind the display screen. The sensor generates an electromagnetic area on the display surface.
When the electronic pen touches the display surface, the sensor can determine the position of the touch point by calculating the electromagnetic change. Compared
with other touch screen technologies, electromagnetic induction touch screens have the highest accuracy and resolution, low power consumption, and are thinner
and lighter. They are especially suitable for use in war environments and construction environments. Currently, this technology is mainly used in the U.S. military.
Other touch screen technologies Currently on the market, in addition to the above-mentioned touch technologies, there are also various touch technologies such as
pressure-sensitive, digital sound wave guide, oscillating pointer, etc., which are generally used for special purposes.
2. Development trends of touch screens 1. Embedded touch screen structure
At present, touch screens basically adopt a plug-in structure. The display module and touch module of this structure are two relatively independent devices,
and then the two devices are integrated through the back-end lamination process. However, this relatively independent plug-in type The structure will affect the
thickness of the product, which is not in line with the development trend of increasingly thinner and lighter touch display products. This gave rise to the concept
of in-line touch screens. The in-line structure embeds the touch module into the display module, so that the two modules are integrated into one, instead of being
two relatively independent devices. Compared with the traditional plug-in structure, the advantages of the in-line structure are: only 2 layers of ITO glass are required,
the material cost is reduced, the light transmittance is improved, and it is thinner and lighter; there is no need for the back-end bonding of the touch screen module and the
TFT module. , improve the yield rate; the touch screen group and the TFT module are produced at the same time, reducing the transportation
cost of the module. In-cell touch screens can be divided into two types: In-cell technology and On-cell technology.
The definitions of the two technologies are slightly different, but the principles are similar. They both embed the touch screen in the LCD module. In-cell technology integrates
the touch screen under the color filter. Since the touch sensor is placed inside the LCD panel and occupies part of the display area, part of the display effect is sacrificed
. It also complicates the process and makes high yield difficult to achieve. . On-cell technology integrates a touch screen on a color filter. Instead of embedding a touch
sensor inside the LCD panel, it only needs to form a simple transparent electrode between the color filter base plate and the polarizing plate, which reduces the technical
difficulty. The main challenge of on-cell is the amount of noise that the display couples to the sensing layer. Touch screen components must use sophisticated algorithms to handle this noise.
On-cell technology provides all the benefits of integrating a touch screen into a display, such as making the touch panel thinner and lighter and significantly reducing costs. However
, the overall system cost reduction is still far less than that of Incell technology. The concept of embedded technology was first proposed by TMD in 2003. Subsequently, Sharp, Samsung, AUO,
LG and other companies successively proposed this concept and published some research results. However, due to technical problems, they were not able to be commercialized. In-line touch
screens have been developed for nearly 10 years, and there is still a certain distance from commercialization. However, in-line touch
screens represent the future development direction of touch screens.
Manufacturers that actively reserve in-line technology will compete in the future market. in a relatively favorable position.
Contact: Mr. Lai
Wechat:17750010683
Whats app：+86 17750010683
Skype：+86 17750010683
QQ: 3221366881
3221366881@qq.com
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2.Industry leading, price advantage, quality assurance
3.Diversified models and products, and all kinds of rare and discontinued products
4.15 days free replacement for quality problems
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