Capacitive touch screen definition: the capacitive touch screen is a four-layer laminated glass screen. Can I install the touch monitor behind the glass and use the touch screen through the glass? Capacitive touchscreen monitors only work through relatively thin glass. The touch screen sensor matches the protective glass used. Additional glass usually does not work.

A capacitive touch screen panel has many pros:

  1. The touch screen with capacitive technology is a four-layer laminated glass screen. 
  2. The screen and control system is relatively cheap, and the response sensitivity is very good. 
  3. The working environment is completely isolated from the outside world and is not afraid of dust and water vapour.
  4. It can adapt to various harsh environments. It can be touched by any object, and it has good stability.

Theoretically, it is sufficient to apply more voltage and thus increase the degree of the touch signal. However, this setting usually cannot be changed for off-the-shelf touch monitors.

Summary error sources:

  • The glass is metallized or wires pass through it (burglary protection)
  • Laminated glazing also interferes with the touch signal due to the air gap between them.
  • A glass may be too thick (>8mm)
  • Monitor touch signal voltage is not enough for optional glass

Touching through existing window glass works with non-conductive glass. Even DIY capacitive touch screen glass must not be crossed by wires (protection against burglary) or subjected to metal spraying.

Tempered safety glass is chemically or thermally tempered glass. Glass is tempered during production. This provides 3-4 times more impact, impact and bending resistance. If the glass breaks, it will shatter into loosely bonded blunt-edged shards or very fine glass chips, depending on the degree of prestressing. They pose a less of a risk of injury than ordinary glass shards.