US 6,147,732 A · Dot matrix-type display device with optical low-pass filter fixed to a member via an adhesive bonding

Abstract

In a liquid crystal display device having an optical low-pass filter provided on a display screen, the optical low-pass filter is fixed to a liquid-crystal panel or a polarizing plate through a bonding layer having a refractive index different from the refractive index of the optical low-pass filter in a state where a surface having an optical function of the optical low-pass filter is directed toward a liquid-crystal panel or the polarizing plate. Further, in a liquid crystal display device having a phase plate, an optical low-pass filter is integrally formed on a phase plate. The occurrence of rainbow-shaped interference fringes is prevented. A liquid crystal display device is miniaturized and the number of components thereof is reduced. The fabrication precision of an optical low-pass filter is improved.

Claims7

Dependent claims

A dot matrix-type display device in which an optical low-pass filter is provided on a display screen, wherein

said optical low-pass filter is fixed to a member included in said display device through an adhesive bonding layer having a refractive index different from the refractive index of said optical low-pass filter in a state where a surface having an optical function of said optical low-pass filter is directed to said member, and
wherein a groove is formed on the outer periphery of the surface having an optical function of said optical low-pass filter, said groove preventing said adhesive bonding layer from sticking out with respect to sides of the surface.

Dependencies are inferred from the claim text.

Dot matrix-type display device with optical low-pass filter fixed to a member via an adhesive bonding

Life of this patent

Dot matrix-type display device with optical low-pass filter fixed to a member via an adhesive bonding

Life of this patent

Abstract

Claims7