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Signing UpStep 1LCD surgery
Open the casing, be careful for remaining charge in capacitors: 94 V!
Work your way through taking the thing apart, take the display unit out. The unit is framed in thin metal, usually held together with tape and some glue. From front to back, the unit has the following layers:
- A horizontal polarizing filter in the form of a sticky plastic sheet glued on the LCD glass.
-The actual LCD unit: looking like greenish glass with ribbon film cables coming out of it (in reality it is 2 sheets of glass with grids of wire, transistors, transparent electrodes, 4 color filters per pixel embedded, and of course the LCD sandwiched in between.
- Another sticky plastic sheet, polarized in vertical direction, glued on the backside of the LCD glass.
- A matte transparent plastic sheet (in my monitor this was also polarized).
- A Fresnel prism sheet, to direct the back light to the left and right, for easy viewing from the sides.
- An acrylic wedge with small notches: It directs the light from a cold cathode tube above the wedge evenly throughout the screen (from now on called ' the wedge').
- A white transparent plastic sheet and a metal back for reflection.
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