Installation: "Series A"
Infrared Touch Frame & Tempered Glass Shield On LG 42" LCD
Step 1.) Preparation
1.) A clean, atmospherically-controlled environment with good lighting
2.) Two work surfaces, one with a padded, non-abrasive surface and
another very flat (we use a 1" thick plate glass measuring 96 X
52") assembly table. For
this installation onto an LG 42" LCD each surface should be at least
1.) #1 or #2 Philips Head
Screwdriver (per your display's fasteners)
2.) X-Acto Knife and Fresh Blades
3.) Windex® Glass Cleaner or Equivalent
4.) Isopropyl Alcohol (rubbing alcohol)
5.) Large Roll Paper Towels
6.) Lint-Free Monitor Cleaning Wipes
7.) 8-12 Non-Skid Cork-Faced Glass Support Squares
8.) Latex Surgical-Style Gloves (optional)
9.) Roll of Painter's Tape (optional)
42" LCD display on
non-abrasive work surface
Pictured: Glass Shield
on Cork-Blocks to be Cleaned
Glass Shield Preparation
The tempered glass shield (0.125" thick in this instance) is placed upon non-slip cork-faced
blocks. These support and protect the glass of both the glass shield and
Thoroughly clean the entire glass shield using a
commercially available glass cleaner.
Then use lint-free monitor wipes to remove any extraneous paper or dust
Tip: It is more effective to liberally
spray the cleaner directly on the glass, allow at least 30 seconds to soak, then wipe off in
vertical strokes. Repeat using horizontal cleaning motion. Continue until
completely spotless on the entire surface, edge to edge.
Apply Adhesive Tape
This is an engineered double-sided adhesive with extraordinary bonding
strength when applied correctly.
We will concentrate our
efforts on the more difficult substrate to adhere to, thus, we apply the
adhesive tape to each side of the the glass shield rather than directly to the
display or the Wavelength® unit.
Apply the 1" wide 3M® VHB® acrylic adhesive tape on one side of the glass to within 1/16" of the
Tip: It is important to maximize the adhesive
properties of the VHB by carefully laying down a
couple of inches at a time and then applying moderate pressure from the
midline outwards to allow trapped air to escape.
Note: DO NOT STRETCH the adhesive tape
Pictured: Glass Shied with VHB Applied (tape's
paper still in place)
The adhesive should have no
gaps in the corners. Overlapping the tape at the X/Y intersection and cut through both
layers to create a near perfect butt joint.
Tip: Butt joints are preferred
expose less potential open area than mitre joints.
Note: Adhesive Strength Is Directly Proportional
to Contact Area, It
should be laid down accurately and pressed onto the surface after it is
Touch Frame With Glass Shield Assembly"blocked-in" with Cork.
Preparing the Wavelength
Using the flat table
surface, the Wavelength® unit is placed face down with non-skid
cork blocks under and around the outside edges to prevent it from slipping
around while we work.
Thoroughly clean the back of the Wavelength® touch
frame using a
commercially available glass cleaner.
Note: Do not spray cleaner directly on the unit,
instead, spray it onto the paper towel and vigorously wipe down the
After the touch frame's
rear surface has been completely cleaned and dried, strip the liner off
of one side of the glass shield.
Liner Off Adhesive
Position the Glass
The tape's liner has been
stripped and the assembly is ready For Installation On The
Carefully place the glass on the rear side of the Wavelength
Note: The glass
is sized smaller than the touch frame which creates a "reveal"
of approximately 1/16"~1/8" on all four edges.
process to apply adhesive to the other side of the glass.
If you purchased a Wavelength® Touchscreen
Assembly with Glass Already Installed
Clean and Clean Again!
Clean the back of the glass-Again
Remove all traces of fingerprints, smudges and
Once the assembly is Ready- Assembly Attachment
The surface of the display must be clean. Often a molded plastic, such as
the bezel of a display will still have "mold release" on its surface. "Mold
Release" will prevent the adhesive from doing its job. Use Isopropyl alcohol
and a lint-free rag to remove the "mold release" agent as well as any other
residue. Allow to thoroughly dry.
Attach the touch frame (with glass) as an assembly to the display
Tip: Mark the
corners of the touch frame's final, ideal location before setting the touch
frame assembly in place by "dry fitting" the assembly on the
display while the adhesive's liner is still in place. Mark the corners using
strips of "Painter's Tape".
For larger displays we suggest that two
people work together when positioning the touchscreen assembly onto the
The touch frame adhesive requires 72 hours at
72ºF. ambient temperature to reach 75% of its full strength (100 p.s.i.).
Higher temperatures will speed the cure while higher humidity and lower
temperatures will slow the cure.
The display assembly should be left in a face down horizontal plane during the curing stage to assure a secure position.
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