# US 12,111,468 B2 · Near-to-eye display device and wearable apparatus

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- Number: US 12,111,468 B2
- Document ID: US12111468B2
- Status: Granted
- Kind: B2
- Application number: 17/309,834
- Filed: 2020-12-29
- Published: 2022-09-29
- Granted: 2024-10-08
- Earliest claimed: 2020-02-24
- Assignees: Boe Technology Group Co., Ltd.
- Applicants: Boe Technology Group Co., Ltd.
- Inventors: Meng Yan; Qiuyu Ling; Wei Wang; Xiaochuan Chen
- Web page: https://patentgrep.com/patent/US12111468B2

## CPC

- G02B 27/0172: {characterised by optical features}
- G02B 3/0056: {arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses (G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085)}
- G02B 3/0062: {Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between}
- G02B 7/021: {for more than one lens}
- G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)}
- G02B 27/0961: {Lens arrays (lens arrays per se G02B3/0006)}
- G06T 19/006: {Mixed reality (object pose determination, tracking or camera calibration for mixed reality G06T7/00)}
- H04N 13/307: using fly-eye lenses, e.g. arrangements of circular lenses
- H04N 13/324: Colour aspects
- G02B 5/201: {in the form of arrays}
- G02B 2027/014: {comprising information/image processing systems}
- G02B 2027/0147: {comprising a device modifying the resolution of the displayed image}
- G02B 2027/0178: {Eyeglass type (eyeglass details G02C)}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

There is provided a near-to-eye display device, including: a pixel island array, a micro-lens array and a filter layer. The pixel island array and the micro-lens array are fixed with respect to and spaced apart from each other, and the micro-lens array includes plural micro-lenses. The pixel island array includes plural pixel islands in one-to-one correspondence with the plural micro-lenses, and each pixel island emits light to the corresponding micro-lens such that the light reach a predetermined viewing position after passing through the corresponding micro-lens. The plural pixel islands emit light of plural colors, and the filter layer includes plural filter portions in one-to-one correspondence with the plural pixel islands. Each filter portion is located between the corresponding pixel island and the corresponding micro-lens, and is close to the corresponding micro-lens. Each filter portion and light emitted by the corresponding pixel island have a same color.

## Claims

### Claim 1

A near-to-eye display device, comprising: a pixel island array, a micro-lens array and a filter layer, wherein the pixel island array and the micro-lens array are fixed with respect to each other and are spaced apart from each other, the micro-lens array comprises a plurality of micro-lenses,
the pixel island array comprises a plurality of pixel islands in one-to-one correspondence with the plurality of micro-lenses, and each of the plurality of pixel islands is configured to emit light to a corresponding micro-lens such that the light reach a predetermined viewing position after passing through the corresponding micro-lens; the plurality of pixel islands of the pixel island array emit light of a plurality of colors;
the filter layer comprises a plurality of filter portions in one-to-one correspondence with the plurality of pixel islands, each of the plurality of filter portions is located between a corresponding pixel island and the corresponding micro-lens and is close to the corresponding micro-lens, and a color of each filter portion is the same as the color of light emitted by the corresponding pixel island, and
the plurality of micro-lenses of the micro-lens array are arranged in a plurality of rows and a plurality of columns, there is no gap between any adjacent two of the micro-lenses in each even row, a distance between any adjacent two of the micro-lenses in each odd row is equal to a diameter of each of the micro-lenses, there is no gap between any adjacent two of the micro-lenses in each odd column, and a distance between any adjacent two of the micro-lenses in each even column is equal to the diameter of each of the micro-lenses.

### Claim 2 (depends on 1)

The near-to-eye display device of claim 1, further comprising a transparent substrate, wherein the pixel island array and the micro-lens array are on two opposite sides of the transparent substrate, respectively.

### Claim 3 (depends on 1)

The near-to-eye display device of claim 1, wherein at least two adjacent filter portions have a gap therebetween.

### Claim 4 (depends on 3)

The near-to-eye display device of claim 3, further comprising a first polarizer and a plurality of second polarizers, wherein the first polarizer is in the gap; the plurality of second polarizers are on light emitting surfaces of the pixel islands and are in one-to-one correspondence with the pixel islands, and polarization directions of the first polarizer and each of the second polarizers are perpendicular to each other.

### Claim 5 (depends on 3)

The near-to-eye display device of claim 3, further comprising a light shielding film layer in the gap.

### Claim 6 (depends on 5)

The near-to-eye display device of claim 5, wherein a material of the light shielding film layer comprises a black resin.

### Claim 7 (depends on 1)

The near-to-eye display device of claim 1, wherein a diameter of each of the micro-lenses is between 30 μm and 10 mm.

### Claim 8 (depends on 1)

The near-to-eye display device of claim 1, wherein a distance between two adjacent micro-lenses in a same row and a distance between two adjacent micro-lenses in a same column are both between 0 mm and 10 mm.

### Claim 9 (depends on 1)

The near-to-eye display device of claim 1, wherein a distance between each pixel island and the corresponding micro-lens does not exceed a focal length of the micro-lens.

### Claim 10 (depends on 1)

The near-to-eye display device of claim 1, wherein each pixel island of the plurality of pixel islands comprises a plurality of pixels, and each of the plurality of pixels comprises an organic light-emitting diode device or a micro-light-emitting diode device.

### Claim 11 (depends on 1)

The near-to-eye display device of claim 1, further comprising a base substrate, wherein the micro-lenses are on the base substrate, and the micro-lenses and the filter layer are on two opposite sides of the base substrate, respectively.

### Claim 12 (depends on 11)

The near-to-eye display device of claim 11, wherein the micro-lenses and the base substrate have a one-piece structure.

### Claim 13 (depends on 1)

A wearable apparatus, comprising the near-to-eye display device of claim 1.

### Claim 14 (depends on 2)

The near-to-eye display device of claim 2, wherein at least two adjacent filter portions have a gap therebetween.

### Claim 15 (depends on 14)

The near-to-eye display device of claim 14, further comprising a first polarizer and a plurality of second polarizers, wherein the first polarizer is in the gap; the plurality of second polarizers are on light emitting surfaces of the pixel islands and are in one-to-one correspondence with the pixel islands, and polarization directions of the first polarizer and each of the second polarizers are perpendicular to each other.

### Claim 16 (depends on 2)

The near-to-eye display device of claim 2, wherein a diameter of each of the micro-lenses is between 30 μm and 10 mm.

### Claim 17 (depends on 2)

The near-to-eye display device of claim 2, wherein a distance between two adjacent micro-lenses in a same row and a distance between two adjacent micro-lenses in a same column are both between 0 mm and 10 mm.

### Claim 18 (depends on 2)

The near-to-eye display device of claim 2, wherein a distance between each pixel island and the corresponding micro-lens does not exceed a focal length of the micro-lens.

### Claim 19 (depends on 2)

The near-to-eye display device of claim 2, wherein each pixel island of the plurality of pixel islands comprises a plurality of pixels, and each of the plurality of pixels comprises an organic light-emitting diode device or a micro-light-emitting diode device.

### Claim 20 (depends on 2)

The near-to-eye display device of claim 2, further comprising a base substrate, wherein the micro-lenses are on the base substrate, and the micro-lenses and the filter layer are on two opposite sides of the base substrate, respectively.