US 11,693,272 B2 · Flexible display apparatus

Abstract

A flexible display apparatus includes a bending area and a non-bending area. The flexible display apparatus further includes a display panel and a polarizing structure disposed on the display panel. The polarizing structure includes a λ/4 phase retardation layer, a linear polarizer disposed on the λ/4 phase retardation layer, and a first adhesive structure disposed between the λ/4 phase retardation layer and the linear polarizer. The linear polarizer includes a stretched polymer film. The first adhesive structure is an adhesive layer with a glass transition temperature that is greater than or equal to 40° C. and less than or equal to 150° C. Accordingly, deformation of the λ/4 phase retardation layer may be prevented or reduced when the flexible display apparatus is folded or bent, thereby improving display quality.

Claims22

Dependent claims

A flexible display apparatus comprising:

a display panel;
and
a polarizing structure disposed on the display panel,
wherein the polarizing structure comprises:
a λ/4 phase retardation layer;
a linear polarizer disposed on the λ/4 phase retardation layer;
a λ/2 phase retardation layer disposed between the λ/4 phase retardation layer and the linear polarizer;
a first adhesive structure disposed between the λ/4 phase retardation layer and the λ/2 phase retardation layer;
and
a second adhesive structure disposed between the λ/2 phase retardation layer and the linear polarizer in direct contact with the linear polarizer, and
wherein:
a thickness of the second adhesive structure is greater than a thickness of the first adhesive structure;
and
in a plan view, an angle between an absorption axis or a transmission axis of the linear polarizer and a bending axis of the flexible display apparatus is 45 degrees ±30 degrees.

11 more elements

A flexible display apparatus comprising:

a display panel;
and
a polarizing structure disposed on the display panel,
wherein the polarizing structure comprises:
a λ/4 phase retardation layer;
a linear polarizer disposed on the λ/4 phase retardation layer;
a λ/2 phase retardation layer disposed between the λ/4 phase retardation layer and the linear polarizer;
a first adhesive structure disposed between the λ/4 phase retardation layer and the λ/2 phase retardation layer;
and
a second adhesive structure disposed between the λ/2 phase retardation layer and the linear polarizer in direct contact with the linear polarizer, and
wherein:
a thickness of the first adhesive structure and a thickness of the second adhesive structure is less than or equal to 5 μm, respectively;
and
in a plan view, an angle between an absorption axis or a transmission axis of the linear polarizer and a bending axis of the flexible display apparatus is 45 degrees ±30 degrees.

11 more elements

Dependencies are inferred from the claim text.

Flexible display apparatus

Life of this patent

Flexible display apparatus

Life of this patent

Abstract

Claims22