Patent ID: 8952935
Filing Date: 2015-02-10
Classification: G02F,G06F

Abstract:
1. A touch display, comprising: a light source, being capable of emitting an incident light; a light guide plate, having a side face and a bottom surface connected to said side face, wherein said light guide plate has a first refractive index and said side face neighbors said light source and receives said incident light; a cover layer, having a second refractive index and being placed over said light guide plate, wherein said second refractive index of said cover layer is smaller than said first refractive index of said light guide plate; a plurality of pillar structures, having a third refractive index and being placed under said bottom surface of said light guide plate, wherein said third refractive index of said plurality of pillar structures is larger than or equal to said first refractive index of said light guide plate; a touch structure, placed over said cover layer; and an electronic paper device, placed under said pillar structures; wherein said cover layer is located between said touch structure and said light guide plate and said plurality of pillar structures are located between said light guide plate and said electronic paper device.