Length:

The length should be 1.0-2.0 mm shorter than the length of the glass to allow space for expansion after compression.
For example, if the LCD and PCB have pins extending to both ends, more interconnector space should be left on the left and right to ensure the interconnector is longer than the last pin of the module.

Height:

The height is the distance between the PCB and the LCD, plus the compression ratio.
For example, if the compressed length between the PCB and LCD is 5.0 mm, a reasonable compression ratio would be between 9% and 13%, with 11% being the suggested middle value for the design.

Distance between PCB and LCD:
Length design = Compression height × (1 + Compression ratio)
= 5.0 mm × (1 + 0.11) = 5.55 mm

Note:
If the contact width (CW) is greater than 0.8 mm, the width exceeds 3.0 mm, or the hardness of the side insulation part is higher than 25°, the compression ratio should be proportionally decreased.

Width:

• If the width is shorter than 3.0 mm, the tolerance should be set to ±0.1 mm.
• If the width is longer than 3.0 mm, the tolerance should be set to ±0.15 mm.

Suggested Width Design Formula:

• For high compression:
  Width = (Inner edge of the frame – lower side of the glass) ÷ 2 × 0.85
• For low compression:
  Width = (Inner edge of the frame – lower side of the glass) ÷ 2 × 0.90