Back to results
US 12,761,413 B2Granted
Optical film and display device including the same
AssigneeSamsung Display Co., Ltd.
InventorsHyo Sung Hong, Beong Hun Beon, Duk Jin Lee, Woo Suk Jung
Life of this patent
Estimating the term…
Abstract
An optical film comprises a polarizing layer, a first optical compensation layer that is disposed under the polarizing layer and is a biaxial plate, a second optical compensation layer that is disposed under the first optical compensation layer and is a quarter wave plate, and a third optical compensation layer that is disposed under the second optical compensation layer and is a positive C plate. The first optical compensation layer has an optical axis angle of 86 to 94 degrees with respect to a transmission axis of the polarizing layer.
Claims13
An optical film, comprising:
- a polarizing layer;
- a first optical compensation layer that is disposed under the polarizing layer and is a biaxial plate;
- a second protective member disposed between the polarizing layer and the first optical compensation layer, wherein the second protective member is disposed directly on the first optical compensation layer;
- a second optical compensation layer that is disposed under the first optical compensation layer and is a quarter wave plate;
- a third optical compensation layer that is disposed under the second optical compensation layer and is a positive C plate, wherein the third optical compensation layer is closer to a display panel than the polarizing layer and is in contact with the display panel;
- and
- a second adhesive member disposed between the second optical compensation layer and the third optical compensation layer, wherein the third optical compensation layer is attached to the second optical compensation layer by the second adhesive member,
- wherein the first optical compensation layer has an optical axis angle of 86 to 94 degrees with respect to a transmission axis of the polarizing layer,
- wherein the first optical compensation layer has an in-plane retardation value (Ro) from 170 nm to 270 nm,
- wherein the first optical compensation layer has a refractive index ratio (Nz) from 0.5 to 2.5, and
- wherein the first optical compensation layer has a retardation value (Rth) from 4 nm to 84 nm in a thickness direction.
8 more elements
An electronic device, comprising:
- a display panel;
- and
- an optical film disposed on the display panel,
- wherein the optical film includes:
- a foldable area, a first non-foldable area, and a second non-foldable area, wherein the foldable optical film is configured to be folded in the foldable area;
- a polarizing layer;
- a first optical compensation layer that is disposed under the polarizing layer and is a biaxial plate;
- a second protective member disposed between the polarizing layer and the first optical compensation layer, wherein the second protective member is disposed directly on the first optical compensation layer;
- a second optical compensation layer that is disposed under the first optical compensation layer and is a quarter wave plate;
- a third optical compensation layer that is disposed under the second optical compensation layer and is a positive C plate, wherein the third optical compensation layer is closer to the display panel than the polarizing layer and is in contact with the display panel;
- and
- a second adhesive member disposed between the second optical compensation layer and the third optical compensation layer, wherein the third optical compensation layer is attached to the second optical compensation layer by the second adhesive member,
- wherein the first optical compensation layer has an optical axis angle of 86 to 94 degrees with respect to a transmission axis of the polarizing layer,
- wherein the first optical compensation layer has an in-plane retardation value (Ro) from 170 nm to 270 nm,
- wherein the first optical compensation layer has a refractive index ratio (Nz) from 0.5 to 2.5, and
- wherein the first optical compensation layer has a retardation value (Rth) from 4 nm to 84 nm in a thickness direction.
13 more elements
An optical film, comprising:
- a polarizing layer;
- a first optical compensation layer that is disposed under the polarizing layer and is a biaxial plate;
- a second protective member disposed between the polarizing layer and the first optical compensation layer, wherein the second protective member is disposed directly on the first optical compensation layer;
- a second optical compensation layer that is disposed under the first optical compensation layer and is a quarter wave plate;
- a third optical compensation layer that is disposed under the second optical compensation layer and is a positive C plate, wherein the third optical compensation layer is closer to a display panel than the polarizing layer and is in contact with the display panel;
- and
- a second adhesive member disposed between the second optical compensation layer and the third optical compensation layer, wherein the third optical compensation layer is attached to the second optical compensation layer by the second adhesive member,
- wherein
- the first optical compensation layer has an in-plane retardation value (Ro) from 170 nm to 270 nm,
- the first optical compensation layer has a refractive index ratio (Nz) from 0.5 to 2.5, and
- the first optical compensation layer has a retardation value (Rth) from 4 nm to 84 nm in a thickness direction.
8 more elements
Dependencies are inferred from the claim text.