Patent ID: 11966075
Assignee: NITTO DENKO CORPORATION
Field: Optics (Instruments)
Classification: CPC G  C | IPC F  G

Claim 0:
1. An optical member, comprising:
a light guide plate having an end surface that light from a light source enters, an emitting surface from which the entered light is emitted, and a light extraction pattern arranged on a surface opposite to the emitting surface; and
a reflective plate bonded to the light guide plate via a double-sided pressure-sensitive adhesive film,
wherein the double-sided pressure-sensitive adhesive film includes a first pressure-sensitive adhesive layer, a low-refractive index layer, and a second pressure-sensitive adhesive layer in the stated order from a light guide plate side,
wherein an outer edge of the light guide plate is positioned outside an outer edge of the double-sided pressure-sensitive adhesive film, and the outer edge of the double-sided pressure-sensitive adhesive film is positioned outside an outer edge of the light extraction pattern, and
when a maximum of a distance between the outer edge of the light guide plate and the outer edge of the light extraction pattern is represented by A, and a maximum of a distance between the outer edge of the light guide plate and the outer edge of the double-sided pressure-sensitive adhesive film is represented by B, a relationship of A>2B is satisfied.