Features of LCD (liquid crystal display) and TP (touch screen) full lamination technology

Full lamination technology uses an optically clear adhesive (OCA Optical Clear Adhesive or OCR Optical Clear Resin) to seamlessly bond the LCD display and touchscreen together. This is fundamentally different from traditional "frame lamination" (also known as "air lamination").

Main features (advantages) of full lamination technology：

1. Better display effect and better transparency

   How it works: The air gap created by frame-laminated technology causes light to reflect and refract multiple times at the interface between air and glass,
   resulting in a "gray" appearance and reduced contrast.

   Effect: Full lamination eliminates the air gap, significantly reducing light reflection and scattering, resulting in a significantly improved light transmittance.
   The intuitive experience is a clearer screen, more vivid colors, and higher contrast, especially in bright sunlight.

2. The touch experience is more sensitive and realistic

3. Thinner screens contribute to thinner devices

4. Effectively prevent dust from entering the screen

5. Better body integrity and higher strength

Challenges (Disadvantages) of Full Lamination Technology

Despite its outstanding advantages, full lamination technology also has some challenges:

1. Extremely High Repair Costs

· This is the most significant disadvantage. With frame-laminated technology, if the outer screen (cover glass) cracks, 

it can be replaced independently, which is relatively inexpensive.

· With full-laminated technology, however, because the LCD, TP, 

and cover glass are tightly bonded together, if the outer screen cracks, 

the entire display assembly (including the expensive inner LCD screen) usually needs to be replaced, 

making the repair cost extremely high.

2. High production process requirements and high yield rate challenges

The entire lamination process must be performed in a dust-free environment, requiring extremely high standards for glue application, alignment accuracy, and degassing. Any imperfection (such as dust or air bubbles) will render the entire screen module scrapped. Therefore, the production cost and difficulty are far higher than frame lamination.