DISPLAY DEVICE AND DISPLAYING METHOD FOR GLASS FREE STEREOSCOPIC IMAGE

• US 20170353716A1
• Filed: 11/08/2016
• Published: 12/07/2017
• Est. Priority Date: 06/03/2016
• Status: Active Grant

• Current Assignee: MOPIC Co., Ltd.
• Original Assignee: MOPIC Co., Ltd.
• Inventors: SHIN, Chang Bong, SHIN, Yoon Cheol
• Granted Patent: US 10,448,001 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 1/1609 to support filters or lenses
• CPC Class Codes: G06F 1/1637 Details related to the display arrangement, including those related to the mounting of the display in the housing
• CPC Class Codes: G06F 2200/1633 Protecting arrangement for the entire housing of the computer
• CPC Class Codes: G06F 3/013 Eye tracking input arrangements G06F3/015 takes precedence
• CPC Class Codes: G06F 3/0482 Interaction with lists of selectable items, e.g. menus
• CPC Class Codes: G06F 3/04847 Interaction techniques to control parameter settings, e.g. interaction with sliders or dials
• CPC Class Codes: G06F 3/04883 for inputting data by handwriting, e.g. gesture or text
• CPC Class Codes: H04N 13/305 using lenticular lenses, e.g. arrangements of cylindrical lenses
• CPC Class Codes: H04N 13/327 Calibration thereof
• CPC Class Codes: H04N 2213/001 Constructional or mechanical details

Abstract

Provided is a glass-free stereoscopic image display device herein. The glass-free stereoscopic image display device may include: a display module that displays a stereoscopic image through a cover including a lenticular lens including multiple convex lenses; and a processor that controls the display module, wherein the processor provides a stereoscopic image by controlling a left-eye image pixel and a right-eye image pixel of the display module on the basis of a lens pitch indicating a distance between the multiple convex lenses, and the cover is provided on a front surface of the user device to be combined with the user device.

Claims

1. A glass-free stereoscopic image display device comprising:

a display module that displays a stereoscopic image through a cover including a lenticular lens including multiple convex lenses; and

a processor that controls the display module,

wherein the processor provides a stereoscopic image by controlling a left-eye image pixel and a right-eye image pixel of the display module on the basis of a lens pitch indicating a distance between the multiple convex lenses, and

the cover is provided on a front surface of the user device to be combined with the user device.

2. A glass-free stereoscopic image display method performed by a processor of a user device, comprising:

providing a stereoscopic image by controlling a left-eye image pixel and a right-eye image pixel of a display module of the user device,

wherein in the providing of a stereoscopic image, when an image displayed on the display module is converted into a stereoscopic image through a cover provided on a front surface of the user device and including a lenticular lens and then provided to a user, the display module is controlled on the basis of a lens pitch indicating a distance between the multiple convex lenses included in the lenticular lens.

3. The glass-free stereoscopic image display method of claim 2, further comprising:

before the providing of a stereoscopic image,

receiving a list of multiple glass-free stereoscopic image contents from a content providing server by executing an application installed in the user device, providing the list to the user, and receiving an input to display any one stereoscopic image content as selected by the user.

4. The glass-free stereoscopic image display method of claim 2,

wherein the providing of a stereoscopic image includes:

adjusting a rendering pitch of the display module on the basis of a glabella width of the user and the lens pitch indicating a distance between the multiple convex lenses.

5. The glass-free stereoscopic image display method of claim 4,

wherein the glabella width is a value determined by providing a user interface including multiple options for selecting a glabella width and selecting any one option by the user before adjusting the rendering pitch, or a predetermined reference value.

6. The glass-free stereoscopic image display method of claim 5,

wherein the providing of a stereoscopic image includes:

calculating a distance between first and second mapping patterns adjacent to each other from among multiple first mapping patterns corresponding to the left-eye image pixel and multiple second mapping patterns corresponding to the right-eye image pixel on the basis of the lens pitch and the glabella width; and

adjusting the rendering pitch indicating a distance between the multiple first mapping patterns and a distance between the multiple second mapping patterns on the basis of the calculated distance.

7. The glass-free stereoscopic image display method of claim 5,

wherein the providing of a stereoscopic image further includes:

calculating a first viewing distance indicating a distance at which the user views an image with a sharper image quality than a predetermined level on the basis of the glabella width, the lens pitch, and an optical distance indicating a distance from the lenticular lens to the left-eye image pixel and the right-eye image pixel;

providing the first viewing distance through the display module;

measuring a second viewing distance indicating an actual viewing distance from the user device to the user using a camera connected to the user device; and

providing a guide signal to guide the user to adjust the second viewing distance of the user on the basis of a distance difference between the first viewing distance and the second viewing distance through the display module

8. The glass-free stereoscopic image display method of claim 5,

wherein the adjusting of a rendering pitch includes:

measuring an actual viewing distance from the user device to the user using a camera connected to the user device; and

adjusting a rendering pitch of the display module on the basis of the actual viewing distance, the glabella width, and the lens pitch.

9. The glass-free stereoscopic image display method of claim 6,

wherein the providing of a stereoscopic image includes:

after the adjusting of the rendering pitch,

measuring a movement direction and a movement distance of the user'"'"'s eyes by performing eye tracking about the user'"'"'s eyes using a camera connected to the user device;

calculating an offset value to be applied to the display module on the basis of the measured movement distance and the glabella width; and

controlling the display module to move the multiple first and second mapping patterns by the offset value in the opposite direction of the measured movement direction.

10. The glass-free stereoscopic image display method of claim 4, further comprising:

before the providing of a stereoscopic image,

correcting misalignment between the lenticular lens including the multiple convex lenses and the left-eye and right-eye image pixels of the display module by moving ON and OFF positions of the pixels included in the display module.

11. The glass-free stereoscopic image display method of claim 10,

wherein the correcting of misalignment includes:

moving the ON and OFF positions of the pixels of the display module to the left or to the right by turning on pixels in an area of the display module to correspond to a space of the rendering pitch and changing mapping values for the ON and OFF positions of the pixels of the display module on the basis of whether the user recognizes the turned-on pixels.

12. The glass-free stereoscopic image display method of claim 11,

wherein the moving of the ON and OFF positions of the pixels of the display module to the left or to the right is performed until the turned-on pixels are recognized with the user'"'"'s one eye or two eyes.

13. The glass-free stereoscopic image display method of claim 10,

wherein in the correcting of misalignment,

the ON and OFF positions of the pixels of the display module are moved in sequence to pixels on the left or right of initially predetermined positions and an input signal about a moment at which a screen of the display module becomes brightest or darkest is received from the user to determine alignment positions between the lenticular lens and the left-eye and right-eye image pixels.

14. The glass-free stereoscopic image display method of claim 13,

wherein the correcting of misalignment includes:

specifying a distance between the user'"'"'s two eyes and the screen of the user device using a camera of the user device or a predetermined reference value;

moving the ON and OFF positions of the pixels of the display module of the user device in sequence to the left or right of the initially predetermined positions;

receiving a signal to move the ON and OFF positions of the pixels from the user and then moving the ON and OFF positions of the pixels to the left or to the right in response to an input of the user by performing fine-tuning; and

when receiving an OK signal from the user, determining ON and OFF positions of the pixels at the time of receipt of the OK signal as the alignment positions between the lenticular lens and the left-eye and right-eye image pixels.

15. A glass-free stereoscopic image display device comprising:

a cover provided on a front surface of the user device to be combined with the user device,

wherein the cover includes a main body covering the front surface of the user device and configured to be combined with the user device and a lens sheet located within or under the main body and including a lenticular lens configured of multiple convex lenses, and

the cover coverts an image provided on a left-eye image pixel and a right-eye image pixel of a display module of the user device through the lens sheet into a stereoscopic image.

16. The glass-free stereoscopic image display device of claim 15,

wherein the cover is configured to be combined with the front surface or a rear surface of the user device.

17. The glass-free stereoscopic image display device of claim 15, further comprising:

a rear-facing auxiliary cover configured to be combined with a rear surface of the user device,

wherein the cover including the lens sheet is configured to be combined with the rear-facing auxiliary cover and thus combined with the front surface or the rear surface of the user device.

18. The glass-free stereoscopic image display device of claim 15,

wherein the cover is a flip cover including:

a cover part including the main body and the lens sheet; and

a case part which is manufactured to protect the outside of the user device and connected to the cover part in order for the cover part to open or cover the front surface of the user device as being fixed on one side of the user device.