Three-dimensional (3D) display device

Patent metadata

Field	Value
Publication number	US-9581824-B2
Application number	US-201414473304-A
Country	US
Kind code	B2
Filing date	Aug 29, 2014
Priority date	Mar 6, 2014
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A 3D display device is provided. The 3D display device includes a display panel and a liquid crystal lens panel. The display panel operates in one of a 2D mode for displaying a 2D image, a 3D mode for displaying a 3D image, and a coincident mode for displaying the 2D image and the 3D image. The liquid crystal lens panel is disposed on the display panel. The liquid crystal lens panel is configured to refract the 3D image through a third region of the liquid crystal lens panel and to transmit the 2D image without refracting the 2D image when the display panel operates in the coincident mode.

First claim

What is claimed is:

1. A three-dimensional (3D) display device comprising:
a display panel extending along a first direction and a second direction substantially orthogonal to the first direction, wherein the display panel includes a plurality of pixels; and
a liquid crystal lens panel disposed on the display panel, wherein the liquid crystal lens panel has a focusing point shifted for every frame,
wherein the liquid crystal lens panel comprises:
a first lens unit field including first, second, and third lens regions which are adjacent to each other, wherein the first lens unit field has a Fresnel lens function;
a first substrate including a plurality of lens electrodes;
a second substrate opposite to the first substrate, wherein the second substrate includes a plurality of common electrodes; and
a liquid crystal layer disposed between the first and second substrates,
wherein absolute voltage values applied to each of the plurality of lens electrodes are constant for every frame.

2. The 3D display device of claim 1 , wherein the first lens unit field comprises the first, second, and third lens regions adjacent to each other along the first direction,
wherein the common electrodes comprises a first common electrode corresponding to the first lens region, a second common electrode corresponding to the second lens region, and a third common electrode corresponding to the third lens region.

3. The 3D display device of claim 2 , wherein the first lens unit field comprises a first row lens unit field and a second row lens unit field which are adjacent to each other along the second direction,
wherein the first common electrode comprises a first row first common electrode corresponding to the first row lens unit field and a second row first common electrode corresponding to the second row lens unit field,
wherein the second common electrode comprises a first row second common electrode corresponding to the first row lens unit field and a second row second common electrode corresponding to the second row lens unit field.

4. The 3D display device of claim 3 , wherein the first row lens unit field and the second row lens unit field have different focusing points in the same frame.

5. The 3D display device of claim 3 , wherein the liquid crystal lens panel further comprises a common line connected to the common electrodes,
wherein the common line comprises:
a first common line extending along the first direction and configured to supply a voltage to the first common electrode; and
a second common line isolated from the first common line in the second direction, extending along the first direction, and configured to supply a voltage to the second common electrode.

6. The 3D display device of claim 5 , wherein each of the first and second common lines receives a voltage from the first substrate.

7. The 3D display device of claim 1 , wherein voltages applied to the common electrodes are repeated every frame period that includes a plurality of frames.

8. The 3D display device of claim 7 , wherein the frame period comprises three through i-th frames, where i is a natural number, and a focusing point of the first lens unit field is shifted by 1/i of one pixel for every frame along the first direction.

9. The 3D display device of claim 8 , wherein the frame period comprises first, second, and third frames which are adjacent to each other;
wherein, during the first frame, the first, second, and third lens regions are arranged in order in the first lens unit field,
wherein, during the second frame, the second, third, and first lens regions are arranged in order in the first lens unit field, and
wherein, during the third frame, the third, first, and second lens regions are arranged in order in the first lens unit field.

10. The 3D display device of claim 9 , wherein an absolute voltage value applied to the first common electrode during the first frame is different from an absolute voltage value applied to the first common electrode during the second frame.

11. A three-dimensional (3D) display device comprising:
a display panel; and
a liquid crystal lens panel disposed on the display panel, wherein the liquid crystal lens panel has a focusing point shifted for every frame,
wherein the liquid crystal lens panel comprises:
a first lens unit field including first, second, and third lens regions;
a first substrate including a plurality of lens electrodes;
a second substrate opposite to the first substrate, wherein the second substrate includes a plurality of common electrodes; and
a liquid crystal layer disposed between the first and second substrates,
wherein absolute voltage values applied to each of the plurality of lens electrodes are constant for every frame, and absolute voltage values applied to one of the plurality of common electrodes are different in two adjacent frames.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Il-Joo
• Song Jinoh
• Yim Hyungwoo
• Park Yoonkyung
• Jeong seung jun

Classifications

• G02B30/27 Primary

  involving lenticular arrays · CPC title

• H04N13/305 Primary

  using lenticular lenses, e.g. arrangements of cylindrical lenses · CPC title

• H04N13/317

  using slanted parallax optics · CPC title

• H04N13/361

  Reproducing mixed stereoscopic images; Reproducing mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background · CPC title

• G02F1/295

  {Analog deflection from or} in an optical waveguide structure] · CPC title