Patent Application Titled "Switchable Lens Device, Method of Manufacturing the Same, and 2-Dimensional and 3-Dimensional Image Display Device Using the Same" Published Online
No assignee for this patent application has been made.
Reporters obtained the following quote from the background information supplied by the inventors: "Embodiments of the disclosure relate to a switchable lens device, a method of manufacturing the same, and a 2-dimensional (2D) and 3-dimensional (3D) image display device using the same.
"A 3D image display device may be classified into one of a stereoscopic display device using glasses or an autostereoscopic display device called a glasses-free 3D display.
"In general, the stereoscopic display device spatially separates an image into a left eye image and a right eye image and displays them, or separates the image into the left eye image and the right eye image in a time division manner and displays them. However, when a viewer watches a 3D image through the stereoscopic display device, the viewer feels inconvenient because he/she has to wear glasses. Hence, the autostereoscopic display device has been developed.
"The autostereoscopic display device generally has optical elements, such as a parallax barrier and a lenticular lens, for separating optical axes of the left eye image and the right eye image, disposed in front of or behind a display screen, thereby implementing the 3D image.
"However, such a related art autostereoscopic display device displays the 3D image, but has the problem not to display a 2D image."
In addition to obtaining background information on this patent application, VerticalNews editors also obtained the inventors' summary information for this patent application: "A switchable lens device includes a first base film, a first lens layer which is formed on the first base film, has a first refractive index in a first direction, has a second refractive index less than the first refractive index in a second direction vertical to the first direction, and has concave surfaces, a second lens layer which has convex surfaces filled in the concave surfaces of the first lens layer and has the first refractive index, and a second base film attached to the second lens layer.
"In another aspect, there is a 2D/3D image display device including a display panel configured to display an image using light linearly polarized in a first direction, a polarization control unit configured to selectively switch light of the first direction to light linearly polarized in a second direction vertical to the first direction, and a switchable lens device configured to refract light incident from the polarization control unit using a difference of a refractive index and separate the refracted light into light for a left eye image and light for a right eye image to implement a 3D image, or transmit the light incident from the polarization control unit without a change to implement a 2D image.
"In yet another aspect, there is a method of manufacturing a switchable lens device including forming a first lens layer, which has a first refractive index in a first direction, has a second refractive index less than the first refractive index in a second direction vertical to the first direction, and has concave surfaces, on a first base film, filling a second lens layer having the first refractive index in the concave surfaces of the first lens layer to form convex surfaces, and forming a second base film on the second lens layer.
BRIEF DESCRIPTION OF THE DRAWINGS
"The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. In the drawings:
"FIG. 1 is a cross-sectional view schematically showing configuration of a 2D/3D image display device according to an exemplary embodiment of the invention;
"FIG. 2 is a cross-sectional view showing a polarization control unit of the 2D/3D image display device shown in FIG. 1;
"FIGS. 3A and 3B are cross-sectional views illustrating a polarization direction of light depending on an operation state of the polarization control unit shown in FIG. 2;
"FIG. 4 is a cross-sectional view showing a switchable lens device of the 2D/3D image display device shown in FIG. 1;
"FIG. 5 illustrates a principle to converge light on a concave surface of the switchable lens device shown in FIG. 4;
"FIG. 6 illustrates a principle to display a 2D image and a 3D image through a 2D/3D image display device according to an exemplary embodiment of the invention;
"FIGS. 7A to 7F illustrate an example of a method of manufacturing a switchable lens device according to an exemplary embodiment of the invention; and
"FIGS. 8A to 8D illustrate another example of a method of manufacturing a switchable lens device according to an exemplary embodiment of the invention."
For more information, see this patent application: Yoon, Ara; Kim,
Keywords for this news article include: Patents.
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