LCD display with bonded (L) and non-bonded (R) cover glass. |
DuPont offers numerous glass thicknesses and optional finishes as well as a wide range of
assembly options to meet a variety of application and design requirements.
Cover Glass Substrate Options
Glass Thickness
The following four standard glass thicknesses are offered, with other options available upon request.
Anti-Glare (AG) Etch
This chemical surface treatment scatters specular reflections into a wide viewing cone to reduce the apparent image of the source. The amount of etching affects the surface gloss which is expressed in a "gloss level". A rougher etch provides a lower gloss level.
|
|
| Non-AG |
Clear |
| 110 |
Medium Etch |
| 65 |
Heavy Etch |
Anti-Reflective (AR) Coatings
The reflection of light off the surface of uncoated glass can cause undesirable virtual images or wash-out of the display image. AR coatings are multi-layer coatings that reduce the reflection from the glass surface and may be placed over non-AG or AG etched glass.
Anti-Smudge (AS) Coatings
AS coatings are hydrophobic nanocoatings that may be applied to an AR-coated glass to reduce the visibility of fingerprints and ease the cleaning of coated glass. AS coatings are recommended where the display will be handled regularly such as Tablet PC applications.
Assembly Options
In-Frame Bonding
With this method, the cover glass is bonded to the LCD area only, inside the frame of the original LCD. There is no mechanical link to the frame of the LCD and the LCD must be mounted via the mounting holes of the OEM panel.
On-Frame Bonding
With this process, the cover glass is bonded to all or part of the front bezel of the original LCD and to the full LCD front surface. Unlike with in-frame bonding, the glass size used has very few constraints and the cover glass can be used as a mounting surface. On-frame bonding is the preferred method for bonding cover glass to LCD modules.
Over-Frame Bonding
This approach consists of bonding the cover glass, which can extend beyond the LCD bezel frame up to a maximum of 1.0, to all or part of the front bezel of the original LCD. As with on-frame bonding, the cover glass can be used as a mounting surface.
Contact us for more information on how DuPont™ Direct Bonding can cost-effectively improve the performance and durability of your displays.
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