HP Compaq nc6220 Maintenance And Service Manual page 209

Display Component Recycling
This appendix provides disassembly instructions for the display
assembly. The display assembly must be disassembled to gain
access to the backlight 1 and the liquid crystal display (LCD)
panel 2.
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Disassembly procedures differ from one display assembly to
another. The procedures provided in this appendix are general
disassembly instructions. Specific details, such as screw sizes,
quantities, and locations, and component shapes and sizes, can
vary from one computer model to another.
D–2 Maintenance and Service Guide