Stacked display panels for image enhancement

• US 10,274,728 B2
• Filed: 05/18/2016
• Issued: 04/30/2019
• Est. Priority Date: 05/18/2015
• Status: Active Grant

• Current Assignee: META Platforms Technologies LLC (Meta Platforms, Inc. (f/k/a Facebook, Inc.))
• Original Assignee: Facebook Technologies, LLC (Meta Platforms, Inc. (f/k/a Facebook, Inc.))
• Inventors: Richards, Evan M., Shen, Shizhe, Binstock, Atman Jacob
• Primary Examiner(s): Azongha, Sardis F
• Application Number:
  US15/158,365
• Publication Number:
  US 20160343315A1
• Time in Patent Office: 1,077 Days
• CPC Class Codes: G02B 2027/012 comprising devices for attenuating parasitic image effects
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G09G 2300/023 Display panel composed of stacked panels
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters

Abstract

A head-mounted display (HMD) includes an electronic display element and an optics block. The electronic display element includes a plurality of display panels that together output image light. The plurality of panels including a first display panel and a second display panel. The first display panel includes a first plurality of sub-pixels that are separated from each other by a non-emission area. The second panel includes a second plurality of sub-pixels. The second display panel is positioned offset from the first display panel such that the second plurality of sub-pixels emit light through the non-emission area of the first display panel. The optics block configured to direct the image light to an exit pupil of the HMD corresponding to a location of an eye of a user of the HMD.

Claims

1. A head-mounted display (HMD) comprising:

an electronic display element comprising a plurality of display panels that together output image light, the plurality of panels including a first display panel and a second display panel, the first display panel including a first plurality of sub-pixels, the first plurality of sub-pixels separated from each other by a non-emission area, the second display panel including a second plurality of sub-pixels, the second display panel positioned offset from the first display panel such that the second plurality of sub-pixels emit light through the non-emission area of the first display panel, wherein the first plurality of sub-pixels are configured to operate over a first range of luminosities, and the second plurality of sub-pixels are configured to operate over a second range of luminosities that is higher than the first range of luminosities, and the electronic display element is configured to;

receive an image having a dynamic range;

divide the dynamic range into “

n”

number of reduced dynamic ranges, wherein “

n”

is a number of display panels, and each reduced dynamic range corresponds to a different range of luminosities that different display panels are configured to operate over;

provide each display panel a respective reduced dynamic range;

display, by the first display panel, a first portion of the image in accordance with the first range of luminosities and a first reduced dynamic range;

display, by the second display panel, a second portion of image in accordance with the second range of luminosities and a second reduced dynamic range; and

an optics block configured to direct the image light to an exit pupil of the HMD corresponding to a location of an eye of a user of the HMD.

2. The HMD of claim 1, wherein the displayed first portion of the image and the displayed second portion of the image have a total contrast ratio that is at least 100,000:

1.

3. The HMD of claim 1, wherein the electronic display panel further comprises a third display panel, the third display panel including a third plurality of sub-pixels, the third display panel positioned offset from the first display panel and the second display panel such that the third plurality of sub-pixels emit light through the non-emission area of the first display panel and the non-emission area of the second display panel, and the third plurality of sub-pixels operate over a third range of luminosities that is higher than the second range of luminosities, and the electronic display element is configured to:

display, by the third display panel, a third portion of the image in accordance with the third range of luminosities and a third reduced dynamic range.

4. The HMD of claim 1, wherein the first display panel and the second display panel are partially transparent to visible light.

5. The HIVID of claim 4, wherein the electronic display element is configured to:

receive image data describing an image object for presentation to a user as a 3D image;

determine a total depth of the image object using the image data;

segment the determined total depth of the image object into “

n”

different, successive, regions;

assign the regions to each of the electronic display panels, wherein a first region is assigned to the first display panel and a second region is assigned to the second display panel;

display, by the first display panel, the first region of the image; and

display, by the second display panel, the second region of the image.

6. The HMD of claim 5, wherein each region has a same value of absolute depth, the absolute depth being the total depth of the image divided by “

n.”

7. The HMD of claim 5, wherein the first region is associated with a first depth and the second region is associated with a second depth that is different than the first depth.

8. The HMD of claim 1, wherein the electronic display panel further comprises an intermediate component, the intermediate component positioned between the first display panel and the second display panel such that light emitted from the second display panel passes through the intermediate component before passing through the first display panel.

9. The HMD of claim 8, wherein the intermediate component is selected from a group consisting of:

a transparent electronic display panel, an attenuator, a polarizer, and diffractive element.

10. The HMD of claim 8, wherein a spacing between the intermediate component and the second display panel is different than a spacing between first display panel and the second display panel.

11. The HMD of claim 8, wherein the second display panel is opaque to the light emitted from the second plurality of pixels and the intermediate component and the first display panel are both at least partially transparent to the light emitted from the second plurality of pixels.

12. A head-mounted display (HMD) comprising:

an electronic display element comprising a plurality of display panels that together output image light, the plurality of panels including a first display panel and a second display panel, the first display panel including a first plurality of sub-pixels, the first plurality of sub-pixels separated from each other by a non-emission area, the second display panel including a second plurality of sub-pixels, the second display panel positioned offset from the first display panel such that the second plurality of sub-pixels emit light through the non-emission area of the first display panel, wherein the first plurality of sub-pixels are configured to operate over a first range of luminosities, and the second plurality of sub-pixels are configured to operate over a second range of luminosities that is higher than the first range of luminosities, and the electronic display element is configured to;

receive an image having a dynamic range;

divide the dynamic range into “

n”

number of reduced dynamic ranges, wherein “

n”

is a number of display panels, and each reduced dynamic range corresponds to a different range of luminosities that different display panels are configured to operate over;

provide each display panel a respective reduced dynamic range;

display, by the first display panel, a first portion of the image in accordance with the first range of luminosities and a first reduced dynamic range;

display, by the second display panel, a second portion of image in accordance with the second range of luminosities and a second reduced dynamic range; and

an optics block configured to;

magnify the image light; and

direct the image light to an exit pupil of the HMD corresponding to a location of an eye of a user of the HMD.

13. The HMD of claim 12, wherein the electronic display panel further comprises a third display panel, the third display panel including a third plurality of sub-pixels, the third display panel positioned offset from the first display panel and the second display panel such that the third plurality of sub-pixels emit light through the non-emission area of the first display panel and the non-emission area of the second display panel, and the third plurality of sub-pixels operate over a third range of luminosities that is higher than the second range of luminosities, and the electronic display element is configured to:

display, by the third display panel, a third portion of the image in accordance with the third range of luminosities and a third reduced dynamic range.

14. The HMD of claim 13, wherein the first display panel and the second display panel are partially transparent to visible light.

15. The HMD of claim 14, wherein the electronic display element is configured to:

receive image data describing an image object for presentation to a user as a 3D image;

determine a total depth of the image object using the image data;

segment the determined total depth of the image object into “

n”

different, successive, regions;

assign the regions to each of the electronic display panels, wherein a first region is assigned to the first display panel and a second region is assigned to the second display panel;

display, by the first display panel, the first region of the image; and

display, by the second display panel, the second region of the image.

16. The HMD of claim 12, wherein the electronic display panel further comprises an intermediate component, the intermediate component positioned between the first display panel and the second display panel such that light emitted from the second display panel passes through the intermediate component before passing through the first display panel.

17. A head-mounted display (HMD) comprising:

an electronic display element comprising a plurality of display panels that together output image light, the plurality of panels including a first display panel and a second display panel, the first display panel including a first plurality of sub-pixels, the first plurality of sub-pixels separated from each other by a non-emission area, the second display panel including a second plurality of sub-pixels, the second display panel positioned offset from the first display panel such that the second plurality of sub-pixels emit light through the non-emission area of the first display panel, wherein the first plurality of sub-pixels are configured to operate over a first range of luminosities, and the second plurality of sub-pixels are configured to operate over a second range of luminosities that is higher than the first range of luminosities, and the electronic display element is configured to;

receive an image having a dynamic range;

divide the dynamic range into “

n”

number of reduced dynamic ranges, wherein “

n”

is a number of display panels, and each reduced dynamic range corresponds to a different range of luminosities that different display panels are configured to operate over;

provide each display panel a respective reduced dynamic range;

display, by the first display panel, a first portion of the image in accordance with the first range of luminosities and a first reduced dynamic range;

display, by the second display panel, a second portion of image in accordance with the second range of luminosities and a second reduced dynamic range; and

an optics block configured to;

correct one or more optical aberrations in the image light;

magnify the image light; and

direct the image light to an exit pupil of the HMD corresponding to a location of an eye of a user of the HMD.