POSITIONING DEVICE FOR OPTICAL MEMBRANE

摘要

The present invention provides a positioning device for an optical membrane that includes at least one positioning hole formed on the optical membrane and at least one positioning pole interposed into the positioning hole respectively, the optical membrane is fixed onto a carrying substrate by traversing said positioning holes by said positioning poles, wherein the profile of each positioning hole extending in corresponding position in the expansion and shrink direction of the optical membrane. A certain width could be reserved in the positioning hole to allow the optical membrane expand and shrink freely at each fixing point and the positioning pole cannot interfere with the positioning hole at the moment of the optical membrane expands and shrinks to cause bending, thus to guarantee flatness of the optical membranes and improve the quality of the backlight module.

主权项

1. A positioning device for an optical membrane, comprising at least one positioning hole formed on the optical membrane and at least one positioning pole interposed into the positioning hole respectively, said optical membrane being fixed onto a carrying substrate by traversing said positioning holes by said positioning poles, wherein the profile of each positioning hole extending in corresponding position in the expansion and shrink direction of said optical membrane, said positioning holes comprising at least one fixing hole, at least one lateral positioning hole and at least one longitudinal positioning hole, said lateral positioning holes being aligned with said longitudinal positioning holes, and said longitudinal positioning holes being not aligned with said fixing holes.