How to add a touch panel to the smart mirror?

Mirrors can be seen everywhere in life, and as a common item in human life, mirrors have existed for thousands of years. However, from ancient times to the present, due to the development of the times, mirrors have evolved from copper mirrors to glass mirrors.

With the arrival of the 21st century technology era, mirrors have also integrated high-tech development into  touch screen smart mirrors. As the core interactive entrance of smart homes, the touch experience of smart mirrors directly affects user satisfaction. Based on the implementation experience of 200+smart mirror projects, Shenzhen Xinlilai Optoelectronics has summarized the standardized process of touch screen integration and launched a touch module solution with stronger adaptability.

• 1、 Preliminary preparation

1.1 Hardware selection suggestions

Recommend using Xinli's "OGS Ultra Thin Capacitive Touch Module" (model XLL-CTP-OGS):

Thickness only 0.7-1.1mm, light transmittance>90%

Supports three ITO coating colors: mirror silver, gray, and black

Working temperature: -30 ℃~85 ℃ (bathroom specific version)

1.2 Tool List

Laser level (ensure that the horizontal error of the touch area is less than 0.5 °)

3M VHB double-sided tape (thickness 0.25mm, recommended model 4952)

Vacuum laminating machine (recommended pressure range of 0.6-0.8MPa)

Xinlilai dedicated touch calibrator

• 2、 Detailed installation steps of touch screen smart mirror

2.1 Structural adaptation and renovation

① Mirror slotting treatment:

Use CNC to mill grooves in the touch area on the back of the mirror, with a depth equal to the thickness of the touch module plus 0.1mm (Xinli provides free CAD drawings)

② Design of wiring channel:

Suggest reserving ≥ 3mm cable trays and providing FPC flexible cable trays (with a bending radius greater than 5mm and a bending resistance of 100000 times)

2.2 Module bonding process

① Cleaning treatment: Use non-woven fabric dipped in 99% isopropanol to wipe the mirror surface, achieving ISO level 5 cleanliness standard

② Accurate alignment: Align with the cross positioning marks on the four corners of the module, and use progressive rolling method for bonding

③ Vacuum curing: Maintain pressure at 45 ℃ for 20 minutes to ensure the uniformity of the adhesive layer thickness is ≤± 0.03mm

2.3 Circuit Connection

① Connect the touch module FPC to the main control board (supports I2C/USB interface)

② Connect to Xinlilai CTP-EMI filter (effectively suppressing interference in the 30MHz-1GHz frequency band)

③ After welding, use UV three proof adhesive to seal the connection (waterproof level up to IP67)

• 3、 Debugging and Testing of the touch screen smart mirror

3.1 Firmware burning

Write precompiled drivers using XLL Programmer tool:

-Supports Android/Linux/Windows systems

-Provide interface for configuring touch sensitivity and gesture recognition parameters

3.2 Calibration Process

① Launch the Xinlilai Touch Analyzer Pro software

② Click on the 9-point calibration pattern in sequence as prompted

③ Automatically generate touch error compensation curve (accuracy ± 0.5mm)

The above is the guide for installing the touch screen onto the smart mirror. We hope it can be helpful to you. For more information, please visit our website and feel free to consult.