Capacitive touch screen with high resolution, light transmission rate is also good, can satisfy the various demands in public places is the touch screen. However, the capacitive touch screen human body as a capacitor electrode use when the the conductor near large enough capacitance coupling between the laminated ITO face, the current flow away will cause capacitive touch screen malfunction; another gloved or handheld insulating object touching when no response, this is because the increase of the insulating medium.
Infrared touch screen is off to rely on the determination of the infrared touch position is determined, the a transparent bezel material is chosen with the touch screen contents (simply do not use any shutter). Therefore, the choice of good light transmission properties baffle, and to be anti-reflective treatment, you can get a good visual effect. But by the infrared emission tube size restrictions, it is not possible to transmit high-density infrared touch screen resolution is not high. In addition, because the infrared touch screen relies on infrared sensors to work, changes in ambient light, such as sunlight or indoor light, etc. will affect its accuracy.
Resistive touch screen work environment completely isolated from the outside world, it is not afraid of dust, water, gas and oil, can be used to touch any object, more suitable for use in the field of industrial control. The disadvantage is that the outer layer of the composite film plastic, too hard or use sharps touch may scratch the touch screen.
Surface acoustic wave technology is very stable, and surface acoustic wave touch screen controller by measuring the decay time on the timeline to calculate the touch location, so its accuracy is very high. The surface acoustic wave touch panel having a third axis (z-axis) is pressure axis - can be obtained by calculating the attenuation amount of the reception signal attenuation at the strength of the user touches the screen size can be divided into up to 2 5 6 efforts. The greater the force, and also the wider the reception signal on the waveform attenuation notch deeper, in all of the touch screen, only the surface acoustic wave touch screen having the perception of the performance of the touch pressure.
Applications
Based on the analysis of the structure, principle and performance characteristics of the touch screen, the type of touchscreen applicable Occasion follows:
Wire resistive touch screen: not afraid of dirt, oil and photoelectric interference afraid of scratching their main weakness. Applies to fixed users in public places, such as industrial control field, office, home and so on.
Five-wire resistive touch screen: excellent sensitivity and light transmission, long service life, not afraid of dust, grease and optical interference, applies to all public places, especially for applications that require precision industrial control field.
Capacitive sensing touch screen: capacitance with temperature, humidity, or ground conditions different changes, so the stability is poor, tend to produce drift. Afraid of electromagnetic interference, drift, not readily available in the industry control and interference. Can be used to require less sophisticated public information inquiries; need for frequent calibration, positioning.
Surface acoustic wave touch screen: plain glass, translucent best, long life, good scratch resistance, suitable for various public places unknown user. But the fear of a long period of accumulation of dirt and oil dip, so use the environment clean place better. Otherwise, the need for regular cleaning service.
Development trends
Touchpad: touchpad with a pressure-sensitive capacitive touch technology, the screen area. It consists of three parts: the bottom center sensor is used to monitor the touch panel is touched, and then processes the information, the intermediate layer provides the interaction with the graphics, text, etc., the outermost layer is the touch surface by high strength the plastic material. Fingers tap the outer surface within a thousandth of a second can this information to the sensor and the registration processing. In addition to PC-compatible, it also has high brightness, image clarity, ease of interaction, which is applied to the pointing information query system (such as electronic bulletin boards), has received very good results.
Touch-screen technology to facilitate the operation of the computer used is a very promising interactive input. Countries in the world this generally give attention to, and put a lot of manpower and material resources for research and development continue to emerge, the new touch screen.
Touch pen: using the touch pen to operate the touch screen similar to the whiteboard, in addition to the display interface, windows, icons, touch pen also has a signature, the function of the mark. Touch pen than earlier only light pen to select the menu function is greatly enhanced.
In short, the development of touch screen showing the trend of specialization, multimedia, three-dimensional and large-screen and so on. With the development of the information society, people need access to a variety of public information. Public information transmission system with touch screen manufacturer for interactive window through the use of advanced computer technology, the use of text, images, music, narration, animation, video and other forms, intuitive, to introduce a variety of information to the people, to people with to great convenience. It can be foreseen that with the rapid development of touch screen technology, touch screen applications will be more and more widely, the performance will be getting better and better.
Infrared sensor touch screen: a lower resolution, but is not current, voltage and electrostatic interference, suitable for harsh environmental conditions; suitable for infrared and light interference of various public places, offices and the requirements are not very sophisticated industrial control scene.
Showing posts with label touch screen. Show all posts
Showing posts with label touch screen. Show all posts
Wednesday, May 8, 2013
Monday, April 15, 2013
VELUX and Energy Micro Together to Create New Touch-screen Remote Control
Energy Micro announced VELUS (Velux) latest Power Windows Remote selection of the EFM32 Giant Gecko microcontroller. This handheld VELUX "Integra" programmable remote control with a simple touch screen interface is used to control the operation of windows, ventilation baffles, blinds and other related accessories. The EFM32 MCU of this 1024 KB flash 32 including an autonomous low-power direct drive TFT controller for remote control large color display. The display is similar to the interface of the smart phone, the screen has icon, and "touch" and "slider". The EFM32 the LESENSE of functional modules in the microcontroller is in deep sleep mode independent monitoring external sensors - deep sleep mode consumes less than 1 μA, In VELUX Integra remote control, this function is used when the screen is touched when you wake up the device. The EFM32 microcontrollers as well as the io-homecontrol two-way wireless transmission protocol.
VELUX R & D department manager Bjarne Ravndal Andreasen said: "People have been very similar smart phone has icons and touch screen interface familiar, with EFM32 microcontrollers, our the Integra remote control, not only easy to operate, attractive appearance, but also has a very Great flexibility and long life. "
Energy Micro CEO Geir Forre, said: "To make the application in achieving high performance for very low power supply consumption, you must have the MCU internal peripherals can operate autonomously, which is why the need to achieve this remote control like the VELUX Integra complex functions at the same time with ultra-low power applications to meet end-customer requirements, the EFM32 is the ideal microcontroller.
32 Giant Gecko series is the world's lowest power microcontroller products, with up to 1024KB flash, support for USB OTG, TFT RGB driver EBI (External Bus Interface) and speeds of up to 48 MHz. Giant Gecko series of all products containing the Gecko family owned low-power peripherals, such as AES encryption, pulse counter, low-power UART, LESENSE low-power sensor interface, and on-chip op amp and so on. QFN64, QFP100, BGA112 BGA120 a variety of package options.
Energy Micro CEO Geir Forre, said: "To make the application in achieving high performance for very low power supply consumption, you must have the MCU internal peripherals can operate autonomously, which is why the need to achieve this remote control like the VELUX Integra complex functions at the same time with ultra-low power applications to meet end-customer requirements, the EFM32 is the ideal microcontroller.
32 Giant Gecko series is the world's lowest power microcontroller products, with up to 1024KB flash, support for USB OTG, TFT RGB driver EBI (External Bus Interface) and speeds of up to 48 MHz. Giant Gecko series of all products containing the Gecko family owned low-power peripherals, such as AES encryption, pulse counter, low-power UART, LESENSE low-power sensor interface, and on-chip op amp and so on. QFN64, QFP100, BGA112 BGA120 a variety of package options.
Monday, December 17, 2012
6.45MM World's Thinnest! TCL Refresh Smartphone Slim World Record
As a human challenge the limits of a way, the phone thin and 100 meters world record, has been constantly refresh our awareness. December 4, 2012, TCL Communications the brand conference Upload to news, the latest products TCLS850 6.45MM create smart phone the ultrathin record, and for a time became a sensation in the global mobile phone industry's big news.
The slim phone means that the use of lightweight and fashion appearance, has always been the relentless pursuit of the mobile phone industry. REVIEW functional machine era, an ultra-thin V3 has swept the globe, to help Motorola achievements dominance era; IPhone4 after, ultra-thin design again rise in the smart phone market from hopeless. Smart phone in the end can do more thin? This topic has not been determined, the only certainty is that people see the ultra-thin record time and time again to be broken. Today's ultra-thin contest is one hundred meters just as World War, meter record measured in hundredths of a second, the thickness of the smartphone record has reached the level of 0.01MM, 7.1MM, 6.8MM, 6.65MM ...... after the decimal point every change represents yet another breakthrough in the scientific and technological strength, represents a business climbed to the peak. TCLS850 emergence of the phone ultrathin record leap straight 6.45MM TCL Communications finally standing on the podium of the ultra-thin cell phone records to become the top players in the field of Global slim phone, which undoubtedly is TCL The victory is also a victory of Chinese mobile phone companies.
Ordinary consumers, the thickness of the phone is just a very simple data, people who understand the smart phone industry, its meaning is difficult to use a few words speak clearly, because the slim phone is actually an international top industrial standards embodied. To use the phone so thin, the phone companies must have the strength of both hard and soft, hard power, including the battery , touch screen , camera, connectors, speakers, etc.; soft power including architecture design, thermal design, new materials technology, simulation technology, mechanical processing ... in fact, the phone thinner, more on research and development capabilities and material requirements "metamorphosis", you can say to a certain extent, the the phone minimum thickness just represents the upper limit of the enterprise's comprehensive strength. In this sense, the introduction of the world's thinnest smartphone is undoubtedly a Declaration, but also a challenge to the world that they are strong enough. Foreign brands phone robbery market profits under the status quo, this Declaration is particularly meaningful for the domestic mobile phone industry.
As ranked seventh in the world mobile phone company, TCL Communication huge success overseas, has been to become a the smartphone leader responsibility, but the two months prior to the conference of its brand, TCL's new product releases very little So there are a lot of people in the industry sent questions: TCL how could no big move for so long? Indeed, as the writer Feng Tang said, his writing is in order to eliminate the swelling of the heart, TCL also own heart swelling to eliminate, and that is its strong R & D: worldwide, TCL has, including the Silicon Valley of the United States, in Milan, Italy France Paris, Shenzhen, Shanghai, including the eight product R & D, design centers, product development personnel more than three thousand, so powerful team how could such thing as a free cooked rice? Conference of the new brand, along with a new brand manifesto "better achievements, TCL Communication of 12 new products debut, the answers to the people this time since doubts. However, many people also "got it right at the beginning, but did not guess the outcome" - think of TCL there will be a large number of new products launched, but did not think the phone ultra-thin record.
Carefully concern TCLS850 also find this phone connotation than in the ultra-thin, and the market normalizing the several slim phone S850 4.7-inch HD screen resolution of 1280 × 720, can be said to stand out; TCL specific nano waterproof fingerprint technology is unique to this one; 4.5 seconds faster boot further thin the icing on the cake ...... a world record is sufficient to Swordsman, but TCL did not meet, but also to the many differentiated The selling point to consolidate market advantage, which show up, may be the ambition of its campaign to market. All in all, for the smart phone market in 2013, TCL Communication's performance is definitely worth the alert to all opponents.
Related articles:
High Price iPad mini is due to the touch screen?
Lithium Battery Manufacturers Accused of Price Fixing
The slim phone means that the use of lightweight and fashion appearance, has always been the relentless pursuit of the mobile phone industry. REVIEW functional machine era, an ultra-thin V3 has swept the globe, to help Motorola achievements dominance era; IPhone4 after, ultra-thin design again rise in the smart phone market from hopeless. Smart phone in the end can do more thin? This topic has not been determined, the only certainty is that people see the ultra-thin record time and time again to be broken. Today's ultra-thin contest is one hundred meters just as World War, meter record measured in hundredths of a second, the thickness of the smartphone record has reached the level of 0.01MM, 7.1MM, 6.8MM, 6.65MM ...... after the decimal point every change represents yet another breakthrough in the scientific and technological strength, represents a business climbed to the peak. TCLS850 emergence of the phone ultrathin record leap straight 6.45MM TCL Communications finally standing on the podium of the ultra-thin cell phone records to become the top players in the field of Global slim phone, which undoubtedly is TCL The victory is also a victory of Chinese mobile phone companies.
As ranked seventh in the world mobile phone company, TCL Communication huge success overseas, has been to become a the smartphone leader responsibility, but the two months prior to the conference of its brand, TCL's new product releases very little So there are a lot of people in the industry sent questions: TCL how could no big move for so long? Indeed, as the writer Feng Tang said, his writing is in order to eliminate the swelling of the heart, TCL also own heart swelling to eliminate, and that is its strong R & D: worldwide, TCL has, including the Silicon Valley of the United States, in Milan, Italy France Paris, Shenzhen, Shanghai, including the eight product R & D, design centers, product development personnel more than three thousand, so powerful team how could such thing as a free cooked rice? Conference of the new brand, along with a new brand manifesto "better achievements, TCL Communication of 12 new products debut, the answers to the people this time since doubts. However, many people also "got it right at the beginning, but did not guess the outcome" - think of TCL there will be a large number of new products launched, but did not think the phone ultra-thin record.
Carefully concern TCLS850 also find this phone connotation than in the ultra-thin, and the market normalizing the several slim phone S850 4.7-inch HD screen resolution of 1280 × 720, can be said to stand out; TCL specific nano waterproof fingerprint technology is unique to this one; 4.5 seconds faster boot further thin the icing on the cake ...... a world record is sufficient to Swordsman, but TCL did not meet, but also to the many differentiated The selling point to consolidate market advantage, which show up, may be the ambition of its campaign to market. All in all, for the smart phone market in 2013, TCL Communication's performance is definitely worth the alert to all opponents.
Related articles:
High Price iPad mini is due to the touch screen?
Lithium Battery Manufacturers Accused of Price Fixing
Sunday, December 2, 2012
Vishay's integrated IR emitter and sensor ADC
A few days ago, Vishay Intertechnology, Inc. (NYSE ticker symbol: VSH) announced the launch infrared emitter photodiode, signal processing IC and 16-bit ADC integrated into small size 4.85mmx2 The .35 mmx0.83mm surface mount package fully integrated proximity sensor --- VCNL3020, expand its optical electronic portfolio. Space-saving VCNL3020 support easy-to-use I2C bus communication interrupt function, the the integrated transmitter driver can expand the sensor's detection distance.
16 bit effective resolution of VCNL3020 device during proximity detection can well resist crosstalk, a mechanical grating does not need to be added between the emitter and detector. Only detect objects within 100mm performance compared with other products, Vishay this sensor uses 10mA ~ 200mA (10mA increments) programmable LED drive current, the detection range is extended to 200mm. Using integrated transmitter driver to drive an external transmitter, the detection range or even more than one meters. Meanwhile, VCNL3020 modulated on the transmission signal, having excellent resistance to ambient light.
The device interrupt function of the sensor to be able to work independently, until the occurrence of a programmable threshold event, and then wake up the microcontroller. This helps consumers to reduce their consumption of software to reduce power consumption by reducing the polling traffic between the sensor and the microcontroller.
VCNL3020 can be used as a touch screen panel lock proximity sensor for smart phones , touch screen phones , PDAs, GPS units and digital cameras and other mobile devices, to achieve the purpose of saving power. The device can also be used as computing, industrial equipment and display optical switch.
Device standby current is only 1.5μA, the power supply voltage of 2.5V to 3.6V I2C bus voltage of 1.7V to 5V. Sensor Operating temperature -25 ℃ ~ +85 ℃. VCNL3020 comply with RoHS, samples will be provided with November 2012, mass production in March 2013, supply period of eight weeks for larger orders.
VISHAY Profile
Vishay Intertechnology, Inc. Fortune 1,000 companies listed on the NYSE (VSH), is the world's largest manufacturers of discrete semiconductors (diodes, MOSFET and infrared optoelectronic devices) and passive electronic components (resistors, inductors, capacitors) one of the largest manufacturers. These components can be used in the industrial, computing, automotive , consumer, telecommunications, military, aerospace, power supply, and medical markets in almost all types of electronic devices and equipment. Its product innovations, successful acquisition strategy, and "one-stop shop" service have made Vishay a global industry leader.
16 bit effective resolution of VCNL3020 device during proximity detection can well resist crosstalk, a mechanical grating does not need to be added between the emitter and detector. Only detect objects within 100mm performance compared with other products, Vishay this sensor uses 10mA ~ 200mA (10mA increments) programmable LED drive current, the detection range is extended to 200mm. Using integrated transmitter driver to drive an external transmitter, the detection range or even more than one meters. Meanwhile, VCNL3020 modulated on the transmission signal, having excellent resistance to ambient light.
VCNL3020 can be used as a touch screen panel lock proximity sensor for smart phones , touch screen phones , PDAs, GPS units and digital cameras and other mobile devices, to achieve the purpose of saving power. The device can also be used as computing, industrial equipment and display optical switch.
Device standby current is only 1.5μA, the power supply voltage of 2.5V to 3.6V I2C bus voltage of 1.7V to 5V. Sensor Operating temperature -25 ℃ ~ +85 ℃. VCNL3020 comply with RoHS, samples will be provided with November 2012, mass production in March 2013, supply period of eight weeks for larger orders.
VISHAY Profile
Vishay Intertechnology, Inc. Fortune 1,000 companies listed on the NYSE (VSH), is the world's largest manufacturers of discrete semiconductors (diodes, MOSFET and infrared optoelectronic devices) and passive electronic components (resistors, inductors, capacitors) one of the largest manufacturers. These components can be used in the industrial, computing, automotive , consumer, telecommunications, military, aerospace, power supply, and medical markets in almost all types of electronic devices and equipment. Its product innovations, successful acquisition strategy, and "one-stop shop" service have made Vishay a global industry leader.
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