Toshiba Satellite L640D - Page 241

Handling the LCD Module
6. CMOS-LSI circuits are used in the module, so guard against damage from
electrostatic discharge. Be sure to wear a wrist or ankle ground when handling the
module.
Satellite L600D/L640D/L645D, Satellite Pro L600D/Pro L640D/Pro L645D Maintenance Manual (960-Q08)