What about this: Put the LCD (and maybe the rest of the electronics, too) into a small enclosure which allows viewing of the front of the display but covers it completely with an acrylic or polycarbonate window. Then, pot around the enclosure, right up to the edges of the window. You could even have some type of flange around the window to provide a clearly-defined boundary for the potting compound. Sean On Thu, Sep 17, 2009 at 9:23 AM, M. Adam Davis wrote: > You should probably discuss it with the potting companies, rather than > the LCD companies. =A0The main concern is that glass is very brittle and > will be stressed as the potting compound shrinks, and due to different > coefficients of expansion heating and cooling cycles will eventually > crack the LCD if the potting compound doesn't match or flex. > > As long as you can find a potting compound that is either very > flexible (silicone based, perhaps) or matches the coefficient of > expansion of glass then you should be fine. > > If not, consider conformal coating the LCD with a flexible compound > first, then using the potting compound. =A0The conformal coating can be > the expansion buffer for the glass. > > Alternately, accept what the manufacturers are telling you and keep > the LCD outside the potted electronics and simply use conformal > coating for the environmental protection on the LCD, and pot the rest. > > -Adam > > On Thu, Sep 17, 2009 at 9:14 AM, alan smith wrote: >> So far...my research tells me that LCD modules can't be potted, or at le= ast most vendors have told me they can't. =A0My client needs a 2x16 charact= er display with the potting all the way up to near the top of the module, s= o the electronics are sealed. =A0Of course I did point out to him that ther= e is a good chance of the moisture getting between the glass and the actual= LCD as well, so perhaps its not really a good idea. =A0The electronics are= potted for enviromental, not security of the design. >> >> Has anyone potted a LCD ? >> >> >> >> -- >> http://www.piclist.com PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist