Switchable lens device and 2- and 3-dimensional image display device using the same
AssigneeLG Display Co., Ltd.
InventorSungwoo Kim
Life of this patent
Estimating the term…
Abstract
Disclosed is a display device that may include a display panel; and a switchable lens device on the display panel, wherein the switchable lens device comprises, a first substrate, a first lens layer having a first refractive index in a first direction and a second refractive index lower than the first refractive index in a second direction substantially perpendicular to the first direction, and having a plurality of convex surfaces, and a second lens layer between the first substrate and the first lens layer, the second lens layer having substantially the same refractive index as the first refractive index.
Claims19
A display device comprising:
- a display panel;
- and
- a switchable lens device on the display panel, wherein the switchable lens device comprises,
- a first film,
- a first lens layer having a first refractive index in a first direction and a second refractive index lower than the first refractive index in a second direction substantially perpendicular to the first direction, and having a plurality of convex surfaces,
- a second lens layer between the first film and the first lens layer, the second lens layer having substantially the same refractive index as the second refractive index, and
- a second film on the first lens layer;
- wherein the second film of the switchable lens device is larger in size than the first film and the first and second lens layers and the display panel, and comprises alignment marks outside the first and second lens layers aligned with corners of the display panel, and
- wherein the second film comprises a material having isotropic and uniaxial characteristics.
A 2D/3D image display device comprising:
- a display panel that displays an image using light linearly polarized in a first direction;
- a polarization control unit that selectively switches light of the first direction to light linearly polarized in a second direction substantially orthogonal to the first direction;
- and
- a switchable lens device that refracts light incident from the polarization control unit using a refractive index difference and separates the refracted light into light for a left eye image and light for a right eye image to represent a 3D image, or transmits the light incident from the polarization control unit without refraction to represent a 2D image,
- wherein the switchable lens devices includes a first film, a first lens layer, a second lens layer and a second film on a first surface of the first lens layer,
- wherein the second film of the switchable lens device is larger in size than the first film and the first and second lens layers and the display panel, and comprises alignment marks outside the first and second lens layers aligned with corners of the display panel, and
- wherein the second film comprises a material having isotropic and uniaxial characteristics.
Dependencies are inferred from the claim text.