Prism sheet and liquid crystal display having the same

摘要

Disclosed is a dual layer prism sheet including two patterned prism sheets adhered to each other with an adhesive layer interposed therebetween. The adhesive layer includes a polymeric adhesive and a lubricant. A liquid crystal display including the dual layer prism sheet is also disclosed. Each pattern on the prism sheet is arranged to make a predetermined angle with a liquid crystal panel.

主权项

1. A liquid crystal display comprising:
a liquid crystal panel; a light source disposed in the rear of the liquid crystal panel and providing the liquid crystal panel with light; and a prism sheet interposed between the liquid crystal panel and the light source, the prism sheet collecting light generated from the light source in a direction perpendicular to the liquid crystal panel, wherein the prism sheet comprises:
an upper prism sheet having a first pattern on one surface thereof and an opposite surface that is flat;a lower prism sheet having a second pattern on one surface thereof; andan adhesive layer interposed between the upper prism sheet and the lower prism sheet to bind the upper prism sheet and the lower prism sheet with each other, the adhesive layer comprising a polymeric adhesive and an amount of a lubricant greater than 0 wt % and equal to or less than about 30 wt % of total adhesive in the adhesive layer, wherein the polymeric adhesive has structural units used to increase a fluidity of the polymeric adhesive derived from the following: wherein R1 is an alkyl or alkenyl having 6 to 20 carbon atoms; and R2 is —OCOCH3, —CONH2, —CH(COOH)CH2COOH, —CH2COOCH2CH2OH, —CH2COOCH2CH(OH)CH3, —CH2COOCH2CH2N(CH3)2, —CH═CHCONH2, —CHCONHCH2OH, or —CH2COOCH2CHCOCH2(CO)2OH.