Foreword:
In recent years, the application of touch panels can be said to be more and more extensive, from the early military or some special applications, to many places have adopted touch panels, if you use Yahoo! Or if Google searches with the keyword "touch panel", it grows with hundreds of results every day. It can be seen that the touch panel is already a popular and rapidly growing application and market. However, there are more than four or five types of technology for touch panels and many manufacturers have invested in them. If some customers want to use touch panels, they will be confused and confused by various information. This article is based on the current mainstream and future technologies, and hopes to provide some useful references for readers who are first involved in touch panels.
• Resistive
The resistive Touch Screen can be said to be the most used technology at present. The driving principle of the resistive type is to find the coordinate axis by means of voltage drop. As can be seen from the figure below, the X axis and the Y axis are each composed of a pair of Driven by a voltage of 0 to 5V. When the resistive touch screen is touched, a voltage drop will occur due to the circuit being turned on, and the controller will calculate the proportion of the voltage drop and then further calculate the coordinates axis.
From the point of view of the resistive structure, the upper layer of the resistive layer is usually made of PET with ITO CoaTIng, and the lower layer is made of PET or glass of ITO CoaTIng. The upper and lower layers are usually insulators when not used. Spacer Dot to open, otherwise it will cause the problem of Constant Touch (cursor fixed every point).
General resistive film on glass (FG), that is, the upper layer is PET of ITO CoaTIng, and the lower layer is general glass of ITO CoaTIng. The disadvantage is that if the general glass is accidentally broken during use, the glass fragments will be cut. user.
In order to avoid such accidents, 3M especially adopts a more secure architecture Polyester Laminated (PL). The upper layer is PET of ITO Coating (refer to the figure below), but the lower layer is PET, optical glue, and chemically strengthened glass of ITO Coating ( From top to bottom). The chemically strengthened glass is 3.4 times stronger than ordinary glass. When the chemically strengthened glass is broken, optical glue can cover the whole layer of fragments of the chemically strengthened glass to prevent the fragments from cutting the user, just like a car block The windshield's thermal insulation paper can only be cracked and not broken. The safety of this Polyester Laminated structure resistive panel is far better than that of Film on Glass (FG).
• Capacitive
Compared with the resistive type, the capacitive touch panel is a completely different technology. The capacitive structure is relatively simple. Basically, the ITO glass is the main body. The four corners of the ITO glass discharge and form a uniform electric field on the surface. When a conductive object, such as a human finger, draws a small amount of current, the controller behind will calculate the proportion of the current drawn and calculate the X axis and Y axis.
3M is currently launching the latest capacitive product ClearTek II. The following table is a comparison table of general resistive and 3M capacitive.
Provide professional solutions for live
broadcast scenarios:
Mobile phone live broadcast scene: When
using a mobile phone to broadcast live on facebook, youtube, instagram, tiktok,
etc., the screen of the mobile phone can be wired/wirelessly projected to a
large display screen such as 32-inch/43-inch/49-inch/55-inch/65-inch, Solve the
problem that the anchor is difficult to watch the fan interaction barrage, so
that the anchor can clearly see the fan message during the live broadcast even
a few meters away from the screen.
Large-screen live broadcast scene: Install
Android system on the 32-inch/43-inch/49-inch/55-inch/65-inch large display
screen, and install the live broadcast app at the same time. Large-screen live
broadcast can enlarge the live screen.
Broadcasting studio scene: The live
broadcast large screen has a built-in studio switcher, switcher monitor and
touch screen.which can realize a rich live scene with multiple cameras,
multiple scenes, and multiple background switching.
Live Broadcast Display Screen,Live Streaming touch Screen,live streaming studio,Wireless Projection Screen,switcher monitor
Jumei Video(Shenzhen)Co.,Ltd , https://www.jmsxdisplay.com