TNx currently have sensor designs in the market ranging from <2″ to 24″ diagonal. The lower end of the size range is typically limited by usability based on finger size.
TouchNetix primarily uses dual side ITO/Glass and 2 layer ITO/PET designs for the highest performance sensors. We have also manufactured true single layer sensors (known as OGS / Touch-on-Lens) from both ITO and from Metal Mesh. Our foundry partners can manufacture using many different combinations of materials and stacks if there is a specific need on a project.
TouchNetix designs use the thinnest possible stack-ups available to meet any application and given performance requirement. Sensor thicknesses typically range from OGS/touch-on-lens (zero thickness), ITO PET of 75 to 300 microns and dul side ITO / glass of 400 to 700 microns.
There is no simple answer to this question as it clearly depends on the size of the sensor, the process and the overall configuration but all of our processes use state-of-the-art metalisation process to maximise tracking density.
Our ‘standard product’ sensors designed and tuned to work through 2mm up to 6mm thick glass lenses while still giving good SNR for the best EMC performance. Our touchscreens can work through thicker lenses but the SNR gradually degrades as the thickness increases.
Standard touchscreens also work through thinner lenses than 2mm with some compromise on linearity so we would recommend a custom touchscreen in this case which can be designed to work through thinner front lenses with excellent linearity.
Provided the materials are compatible (for example a glass sensor and a plastic lens are difficult to work with), it is possible to use a plastic front lens although it is important to remember that the dielectric constant of plastic is significantly lower than that of glass and so a good rule of thumb for the equivalent thickness of plastic vs glass is that plastic can be 50% of the thickness of glass for equivalent touch delta / SNR performance.
The leadership team of TouchNetix have been involved in the capacitive touchscreen business since 2004. Over the years they have worked on hundreds of touchscreen design-ins in the most diverse of projects. The four founders of TouchNetix were the senior management team of the Touch Products group at Atmel Corp. which acquired Quantum Research Group in 2008. TouchNetix was founded in 2010 to address medium and low volume high performance touchscreen markets.
We have worked hard to make our sensors as environmentally tolerant as they can possibly be by developing a thorough understanding of the potential failure mechanisms and then designing and manufacturing them from the ground-up and finally by verifying their longevity through environmental testing. We are continually improving our knowledge and processes in this area.
Full testing can only be performed on fully assemble end products: TouchNetix designs have been demonstrated to meet EN61000 4-6 immunity standards in industrial control products, and ISO 11452 Automotive (road vehicles) products.
Most of our front lenses are made from high quality glass. In some cases this glass is chemically strengthened or has a specific surface finish such as anti-glare (AG) or anti-fingerprint (AF).
We can also specify proprietary front lens glasses such as Gorilla(TM) glass for Corning(TM).
Yes, through a combination of proprietary pattern design, the correct choice of controller IC and careful tuning, TouchNetix can support most glove types, including thick industrial gloves as shown. See our video of one of our touchscreens working with a range of glove types and even concurrently with a broadband noise source to demonstrate that gloves can be used without compromising performance..
Yes, a combination of stack-up, pattern design, controller IC choice and tuning can minimise the effects of moisture or water on the lens surface. Many of the more recent controller IC’s have a combination Self / Mutual capacitance measurement methodology which significantly improves water tolerance if the system is designed and tuned correctly.
TouchNetix has considerable experience in developing touchscreens which can uses a small (1-2mm tip) conductive passive stylus while maintaining good linearity, response rate and noise performance.
TouchNetix is also developing an experience base with active stylus which requires proprietary third party hardware to function.
There are many driver IC vendors on the market each with their strengths and weaknesses. TNx will always chose the best suited controller for any particular project requirement and can be guided by the customer if they have a preference.
TouchNetix is proud to have achieved ISO9001 certification from BSI in 2014. All of our sensor and IC partners are also all at least ISO9001 certified.
TouchNetix provides its proprietary TouchHub tools which run on a PC for evaluation of touchscreens. These are provided free of charge to our customers along with appropriate interface electronics hardware.
TouchNetix provides the necessary Quality Control hardware and software to ensure all of our touchscreens can be properly tested either at the manufacturing facility or at the customers facility.
Yes, TouchNetix can support either approach for custom products to meet customers design requirements and preferences. Luminance series standard products are passive tail with a separate control board and Brilliance series products are active tail.
TouchNetix has a number of direct factory partnerships in China, Korea and in the UK. Each factory has a unique product manufacturing base and capability which allows us to address the broadest range of customer requirements.
TouchNetix standard or custom products can be supplied as a stand-alone sensor or as a complete assembly laminated to the front lens. We have many product integration capabilities including full direct bonding of the display to the sensor module so please dicsuss your needs with us.
TouchNetix has been evaluating alternative transparent conductive materials including metal mesh and silver nanowire and is planning to implement these in future generations of sensor design. These materials are already included in our design tools.
Our standard time for a fully custom product is typically 12 weeks.
TocuhNetix can potentially address any market segment although our primary focus is in Industrial, Medical, Home Appliance, Aerospace and Specialist Commercial and Consumer products.
TouchNetix philosophy is to fully support our customers with the required tools and communication to take the project from from concept to manufacture. You would normally expect to have direct communication with our highly knowledgeable engineers. As we are experts in our field, we will never need to refer you to third parties such as the driver IC vendor for support.