表面触觉呈现纹理，拨号：即时
Spun out of Northwestern University in 2011 when company’s co-founders Ed Colgate and Michael Peshkin first described their haptic solution in a CHI 2011 paper titled “Enhancing Physicality in Touch Interaction with Programmable Friction”, the startup engineered its haptics around electroadhesion. This effect only relies on surface electrostatic forces interacting with the skin at the tip of your fingers, which under increased touch friction, perceive the same signal as a texture or a pattern protruding out of the touch surface. In effect, the changes in friction are perceived as fine textures, edges and bumps that can be felt without looking although they can be tied to visual representations.
“我们创造的选择性的方式是在触摸接口下方应用一个电场，从而产生反向极性，从而吸引更多的手指到屏幕表面。我们可以在高频和像素的高频中调节这种路，并在接受Eenews Europe采访时解释说。“从物理上讲，当皮肤靠近屏幕时，它会在屏幕上滑动时会经历更多的摩擦。”
In the touch-display stack, the added cost for haptics is marginal as the company leverages the existing patterned Tx and Rx ITO traces below the glass of the touch-panel and only puts additional ITO lines on top of the same cover glass.
Lopresti解释说，底层是用于触摸检测的，顶层由触觉的浮动电极组成，触觉与底部电极相结合以将触摸传感器变成触觉执行器。“我们以相同的触摸传感线驱动触觉，电容性地通过玻璃连接到顶部电极，关闭电路。首席执行官继续说道。“We don’t complicate the touch panel very much, so the cost differential is negligible” LoPresti added, noting that Tanvas owns the IP (through multiple patents) on how the top electrodes must be patterned relative to the bottom electrodes to properly maximize the electroadhesion effects.
Another important part of the IP is the firmware and software necessary to deliver these haptic effects. The startup has developed a complete development kit with all the tools to design the haptics for any touch interface with ready to use widgets for scroll buttons, sliders or rotating knobs. It also offers to train design engineers with its haptics solution or to design bespoke haptics solutions.
“工具本身很简单。UI图形的灰度图像为我们的渲染引擎提供了触觉，表明必须归因于什么像素。” Lopresti解释说。任何图像都可以变成255层摩擦的质地，纯白色代表最高的摩擦和最低摩擦的纯黑。”
“我们可以像刷新显示的图像一样快地更改触觉效果。您可能会感觉到沙子的质地，然后从屏幕上擦除，并在下面感觉到不同的质地。我们也可以分层触觉。例如，如果您点击一次，则带有点击的圆按钮可能具有不同的粒度水平，或者在双击时成为二进制按钮（左或右键单击）。”首席执行官说。
目前，该公司的示威者使用现成的组件，但是将来，Tanvas还希望创建一个自定义的触摸显示微控制器，以集成触摸感应和触觉功能，而无需同步两个不同的组件。这将证明具有成本竞争力的替代性触觉和触觉解决方案。触觉在毫秒的触摸检测中感觉到。
The CEO also emphasized that this technology is completely solid-state, not only implemented without any moving parts, but also without having to vibrate the screen even through the use of piezoelectric actuators (also considered as solid-state technology compared to eccentric rotating mass motors).
This is an important distinction, LoPresti argued, because driving piezoelectric actuators at high frequencies to get the desired physical haptic effects through vibrations do come with some issues, namely buzzing noises and resonances which need to be dampened.
他说：“在汽车中，如果您想使用纤维状液溶液，则必须设计抑制硬件以减轻不需要的振动，这会增加成本和重量，因此大多数OEM试图避免抑制其屏幕。”
“In our touch plus haptics solution, the touch panel is the coverlens, which makes the bill of materials compelling depending on the size and shape of the screen.”
洛普雷斯蒂（Lopresti）估计，尺寸为10英寸的对角线是坦伐斯图（Tanvastouch）在成本基础上变得引人注目的，而颤抖的触觉触觉解决方案的趋势点开始。
“The bigger the screen, the more complicated it is to damp, let alone across curved surfaces. We have demonstrated a 15″ display with Innolux, and because the technology is easily scalable, they will be able to combine multi-touch with haptics across their entire portfolio, including large curved displays. Because we are not vibrating the screen, we can deliver different haptics at different places of the screen”.
在CES 2020年，该公司宣布与展示制造商Innolux建立合作伙伴关系，使用Tanvastouch，其可编程纹理和对光滑物理表面的触觉效果生产15英寸汽车合格的触摸显示屏。该公司已经在其第一个焦点市场的汽车领域与几个OEM互动，在那里发现了最多的吸引力。
“我们已经发货前期制作原型to automotive OEMs to evaluate surface haptics in future vehicles. This is the plan we are pursuing today, because car makers have literally come to us to solve driver distraction issues around cockpit displays, they want to reduce glances and minimize the time a driver has his/her eyes off the road”.
“从手机等消费空间中，没有很大的吸引力。我们希望市场能够进化一点，以便OEM知道他们真正想对这种触觉做些什么。到我们在汽车市场上达到生产量时，我们将拥有一个更适合消费市场的外形和成本方面的解决方案。我们正在等待市场追赶。”
One consumer application LoPresti sees tangible for TanvasTouch is a foldable laptop with a full screen instead of the keypad. The technology is also applicable to other surfaces made of plastic or metal including soft surfaces such as track pads. Because it is software-driven, it does not require any tuning. This means the textures and haptic effects can be harmonized across size, shape and surface. In a car, this could be across the cockpit display but also on door handles, the steering wheel and upholstery.
坦瓦斯（Tanvas）完成了一场A系列资金，为1,100万美元，并计划在2020年额外筹集200万美元。
坦瓦斯 -www.tanvas.co
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