Super Retardation Film
A super retardation film featuring a retardation that far exceeds the interference region.
Using PET, a common material, our proprietary stretching tehcnology, and inline coating technique, this film offers superb cost performance.
Combined with LED light source, this unique film eliminates tinting (rainbow pattern) caused by birefrincence.
|Item||Unit||Cosmoshine SRF®||Our conventional product|
|Tensile strength at break||MD||MPa||83||221|
|Elongation at break||MD||%||6||138|
|R0 in-plane retardation||-||(nm)||8,400||3,200|
|UV transmittance (370nm)||-||(%)||≦ 2.0||-|
|Primer coating||Outside||PVA & H/C adhesion||Adhesion improvement (general purpose)|
|Inside||PVA & H/C adhesion||Adhesion improvement (general purpose)|
(Above data is typical value, not guaranteed value.)
Can be used as a protective film for two-upper and lower polarizers. Usually, a TAC film is used as polarizer protective film; however, in severe operating environments, moisture permeability with this material often leads to problems including uneven images and image quality degradation. Use of SRF is expected to solve these problems and make LCD panels more reliable.
When a polarizing plate (sunglasses) is placed over the liquid crystal display, light does not pass through and the screen appears completely dark. If the SRF is inserted diagonally, the light emitted from the liquid crystal display is covered into more natural light, so the screen becomes visible.