COLOR FOVEATED DISPLAY DEVICES AND METHODS OF MAKING THE SAME

• US 20200132997A1
• Filed: 10/25/2018
• Published: 04/30/2020
• Est. Priority Date: 10/25/2018
• 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: Ouderkirk, Andrew John, Hillis, James, Zannoli, Marina, Sears, Jasmine Soria, Bonar, James Ronald, Valentine, Gareth, Silverstein, Barry David, Hunt, Warren Andrew
• Granted Patent: US 11,262,584 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 2027/0112 comprising device for genereting colour display
• CPC Class Codes: G02B 2027/0118 comprising devices for improving the contrast of the display / brillance control visibility
• CPC Class Codes: G02B 2027/0123 comprising devices increasing the field of view
• CPC Class Codes: G02B 2027/0138 comprising image capture systems, e.g. camera
• CPC Class Codes: G02B 2027/014 comprising information/image processing systems
• CPC Class Codes: G02B 2027/0178 Eyeglass type eyeglass details G02C
• CPC Class Codes: G02B 2027/0187 slaved to motion of at least a part of the body of the user, e.g. head, eye
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 27/017 Head mounted
• CPC Class Codes: G02B 27/0172 characterised by optical features
• CPC Class Codes: G02B 27/0179 Display position adjusting means not related to the information to be displayed
• CPC Class Codes: G06F 3/147 using display 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 2310/0232 Special driving of display border areas
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2320/0686 with two or more screen areas displaying information with different brightness or colours
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• CPC Class Codes: G09G 2340/06 Colour space transformation
• CPC Class Codes: G09G 2354/00 : Aspects of interface with display user
• CPC Class Codes: G09G 3/32 : semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: G09G 5/026 : Control of mixing and/or overlay of colours in general G09G5/022 and G09G5/024 take precedence
• CPC Class Codes: H01L 25/0753 : the devices being arranged next to each other
• CPC Class Codes: H01L 27/156 : two-dimensional arrays

Abstract

A display device includes a display panel having a first emission region and one or more second emission regions disposed adjacent to the first emission region. The display device includes a plurality of light emitters, arranged in the first emission region, corresponding to a first color gamut and a plurality of light emitters, arranged in the one or more second emission regions, corresponding to a second color gamut that is distinct from the first color gamut. A method for making a display device with a plurality of light emitters corresponding to a first color gamut in a first emission region and a plurality of light emitters corresponding to a second color gamut in a second emission region is also described.

Claims

1. A display device, comprising:

a display panel configured to project light, the display panel having a plurality of emission regions that includes a first emission region and one or more second emission regions, wherein;

the first emission region is distinct from and mutually exclusive to the one or more second emission regions; and

the one or more second emission regions are disposed adjacent to the first emission region;

a plurality of light emitters, arranged in the first emission region, corresponding to a first color gamut; and

a plurality of light emitters, arranged in the one or more second emission regions, corresponding to a second color gamut that is distinct from the first color gamut.

2. The display device of claim 1, wherein:

the plurality of light emitters, arranged in the first emission region, includes at least;

a first group of two or more light emitters configured to emit light, the two or more light emitters of the first group having a first representative color; and

a second group of two or more light emitters configured to emit light, the two or more light emitters of the second group having a second representative color that is distinct from the first representative color; and

a respective second emission region of the one or more second emission regions includes;

a third group of one or more light emitters configured to emit light, the one or more light emitters of the third group having a third representative color that is distinct from the first representative color and the second representative color; and

a fourth group of one or more light emitters configured to emit light, the one or more light emitters of the fourth group having a fourth representative color that is distinct from the first representative color and the third representative color.

3. The display device of claim 2, wherein:

the plurality of light emitters, arranged in the first emission region, includes;

a fifth group of two or more light emitters configured to emit light, the two or more light emitters of the fifth group having a fifth representative color that is distinct from the first representative color and the second representative color; and

the respective second emission region of the one or more second emission regions includes;

a sixth group of one or more light emitters configured to emit light, the one or more light emitters of the sixth group having a sixth representative color that is distinct from the first representative color, the third representative color, and the fourth representative color.

4. The display device of claim 3, wherein:

each light emitter of the fourth group of one or more light emitters and the sixth group of one or more light emitters corresponds to a light emitter of a particular type; and

the display panel is configured to concurrently provide (i) a first current density for the fourth group of one or more light emitters for emitting light of the fourth representative color and (ii) a second current density that is distinct from the first current density for the sixth group of one or more light emitters for emitting light of the sixth representative color.

5. The display device of claim 2, wherein:

the two or more light emitters of the first group have emission wavelengths in a first wavelength range;

the two or more light emitters of the second group have emission wavelengths in a second wavelength range that is distinct from the first wavelength range;

the one or more light emitters of the third group have emission wavelengths in a third wavelength range; and

the one or more light emitters of the fourth group have emission wavelengths in a fourth wavelength range that is distinct from the third wavelength range.

6. The display device of claim 5, wherein the third wavelength range is distinct from the first wavelength range.

7. The display device of claim 2, wherein the first group of two or more light emitters corresponds to a first luminous efficacy and the third group of two or more light emitters corresponds to a second luminous efficacy that is distinct from the first luminous efficacy.

8. The display device of claim 2, wherein the display panel further includes:

the first emission region is in contact with the one or more second emission regions.

9. The display device of claim 2, wherein:

a respective light emitter of the first group of two or more light emitters operates at a current density that is less than a current density at which a respective light emitter of the third group of one or more light emitters operates.

10. The display device of claim 2, wherein:

the display panel is configured to provide a first current density for the first group of two or more light emitters; and

the display panel is configured to provide, for the third group of two or more light emitters, a second current density at a first time and a third current density that is distinct from the second current density at a second time that is distinct from the first time.

11. The display device of claim 2, wherein a size of a light emitter of the plurality of light emitters in the first emission region is less than a size of a light emitter of the plurality of light emitters in the one or more second emission regions.

12. The display device of claim 1, wherein:

at least two adjacent light emitters of the plurality of light emitters in the first emission region are spaced apart from each other by a first distance that is less than a distance between two light emitters of the plurality of light emitters, that are adjacent to each other, in the one or more second emission regions.

13. The display device of claim 2, wherein:

the display panel has two second emission regions;

the first emission region is located between the two second emission regions;

the two or more light emitters of the first group in the first emission region and the one or more light emitters of the third group in each second emission region are arranged to form a first linear array; and

the two or more light emitters of the second group in the first emission region and the one or more light emitters of the fourth group in each second emission region are arranged to form a second linear array that is distinct and separate from the first linear array.

14. The display device of claim 13, wherein:

the plurality of light emitters, arranged in the first emission region, includes a fifth group of two or more light emitters configured to emit light, the two or more light emitters of the fifth group having a fifth representative color that is distinct from the first representative color and the second representative color;

the respective second emission region of the one or more second emission regions includes a sixth group of one or more light emitters configured to emit light, the one or more light emitters of the sixth group having a sixth representative color that is distinct from the first representative color, the third representative color, and the fourth representative color; and

the two or more light emitters of the fifth group in the first emission region and the one or more light emitters of the sixth group in each second emission region are arranged to form a third linear array that is distinct and separate from the first linear array and the second linear array.

15. The display device of claim 13, wherein:

the plurality of light emitters, arranged in the first emission region, includes a fifth group of two or more light emitters configured to emit light, the two or more light emitters of the fifth group having a fifth representative color that is distinct from the first representative color and the second representative color;

the respective second emission region of the one or more second emission regions includes a sixth group of one or more light emitters configured to emit light, the one or more light emitters of the sixth group having a sixth representative color that is distinct from the first representative color, the third representative color, and the fourth representative color; and

the two or more light emitters of the second group in the first emission region, the one or more light emitters of the fourth group in each second emission region, and the one or more light emitters of the sixth group are arranged to form the second linear array.

the two or more light emitters of the fifth group in the first emission region are arranged to form a third linear array that is distinct and separate from the first linear array and the second linear array.

16. The display device of claim 1, wherein:

a brightness of the light emitted from the one or more second emission regions is less than a brightness of light emitted from the first emission region.

17. The display device of claim 1, wherein:

the first emission region is surrounded by the one or more second emission regions.

18. The display device of claim 1, wherein:

the first emission region includes a plurality of pixels, each pixel including two or more light emitters;

the second emission region includes a plurality of pixels, each pixel including two or more light emitters;

the display device is configured to receive first color information for a pixel in the first emission region and second color information for a pixel in the one or more second emission regions; and

the display device is configured to process the second color information to obtain third color information based at least on the second color gamut for the one or more second emission regions and cause one or more light emitters of the pixel in the one or more second emission regions to emit light based on the third color information instead of the second color information.

19. The display device of claim 18, wherein:

the display device is configured to cause one or more light emitters of the pixel in the first emission region to emit light based on the first color information.

20. A method of making a display device, the method comprising:

arranging a plurality of light emitters, that corresponds to a first color gamut, in a first emission region of a display panel having a plurality of emission regions; and

arranging a plurality of light emitters, that corresponds to a second color gamut, in one or more second emission regions of the display panel, wherein;

the first emission region is distinct from and mutually exclusive to the one or more second emission regions; and

the one or more second emission regions are disposed adjacent to the first emission region, wherein;

the first color gamut is distinct from the second color gamut.