# US 12,222,497 B2 · Display device

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- Number: US 12,222,497 B2
- Document ID: US12222497B2
- Status: Granted
- Kind: B2
- Application number: 17/400,261
- Filed: 2021-08-12
- Published: 2021-12-02
- Granted: 2025-02-11
- Earliest claimed: 2019-02-12
- Assignees: Japan Display Inc.
- Applicants: Japan Display Inc.
- Inventors: Masaaki Kabe; Takeo Koito; Chikyu Nakaoka
- Web page: https://patentgrep.com/patent/US12222497B2

## CPC

- G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)}
- H04N 13/361: Reproducing mixed stereoscopic images; Reproducing mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background
- B60K 35/211: {producing three-dimensional [3D] effects, e.g. stereoscopic images}
- B60K 35/215: characterised by the combination of multiple visual outputs, e.g. combined instruments with analogue meters and additional displays
- B60K 35/22: Display screens
- G02B 30/32: characterised by the geometry of the parallax barriers, e.g. staggered barriers, slanted parallax arrays or parallax arrays of varying shape or size
- H04N 13/31: using parallax barriers
- H04N 13/351: for displaying simultaneously
- H04N 13/363: using image projection screens (volumetric display H04N13/388)
- B60K 35/23: Head-up displays [HUD] (optical aspects of head-up displays G02B27/01)
- G02B 2027/0118: {comprising devices for improving the contrast of the display / brillance control visibility}
- G02B 2027/0134: {of stereoscopic type}
- G02B 2207/123: Optical louvre elements, e.g. for directional light blocking
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES

## Abstract

According to one embodiment, a display device includes a display area, a light control element, a projection surface and at least one of one or more mirrors or one or more lenses. The display area includes subpixels, and includes a first area containing first subpixels in the subpixels and a second area containing second subpixels in the subpixels. The light control element is overlapped with the first area. The projection surface projects an image displayed in the display area. A virtual image perceived by a user who views the projection surface includes a first virtual image corresponding to the first area and perceived as a stereoscopic virtual image, and a second virtual image corresponding to the second area and perceived as a planar virtual image.

## Claims

### Claim 1

A display device comprising:
a display area including subpixels arranged in a first direction and a second direction which is orthogonal to the first direction, and including a first area containing first subpixels in the subpixels and a second area containing second subpixels in the subpixels;
a light control element that is overlapped with the first area and is not overlapped with the second area;
a projection surface on which an image displayed in the display area is projected; and
at least one of one or more mirrors or one or more lenses for projecting the image on the projection surface, wherein
a virtual image perceived by a user who views the projection surface includes a first virtual image corresponding to the first area and perceived as a stereoscopic virtual image, and a second virtual image corresponding to the second area and perceived as a planar virtual image,
the display device comprises a peripheral part and a light shielding member, the light shielding member arranged between a predetermined first subpixels constituting the first subpixels and a predetermined second subpixels constituting the second subpixels,
the first area includes a third area capable of including one or more lines of the first subpixels, the third area being between a line of the first subpixels closest to the second area and the second area, and
a part of the light shielding member and a first light shielding member are arranged over a surface of the third area.

### Claim 2 (depends on 1)

The display device of claim 1, wherein the virtual image includes, with respect to the user, the first virtual image in an upper part and the second virtual image in a lower part.

### Claim 3 (depends on 1)

The display device of claim 1, wherein the light control element further includes a second light shielding member overlapping the first light shielding member.

### Claim 4 (depends on 1)

The display device of claim 1, wherein
the second virtual image is perceived by the user in a first depth position, and
the first virtual image is perceived by the user in a range between a second depth position and a third depth position.

### Claim 5 (depends on 4)

The display device of claim 4, wherein the range includes the first depth position.

### Claim 6 (depends on 4)

The display device of claim 4, wherein the first depth position is a position closer to a view point of the user than is the range.

### Claim 7 (depends on 1)

The display device of claim 1, wherein
the first subpixels includes a plurality of subpixels each displaying a plurality of images of a plurality of view points, by which the user can perceive the stereoscopic virtual image, and
the second subpixels displays an image of one view point by which the user can perceive the planar virtual image.

### Claim 8 (depends on 1)

The display device of claim 1, wherein, a plurality of images of a plurality of view points displayed using the first subpixels are projected onto the projection surface via the light control element, and an image of one view point displayed using the second subpixels is projected onto the projection surface.
