# US 2022/0035084 A1 · Color filter array for reflective display device

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- Number: US 2022/0035084 A1
- Document ID: US20220035084A1
- Status: Published application
- Kind: A1
- Application number: 17/349,941
- Filed: 2021-06-17
- Published: 2022-02-03
- Earliest claimed: 2020-07-29
- Assignees: E Ink Holdings Inc.
- Applicants: E Ink Holdings Inc.
- Inventors: Ian FRENCH; Xian-Teng CHUNG; Po-Yuan LO
- Web page: https://patentgrep.com/patent/US20220035084A1

## CPC

- G02B 5/201: {in the form of arrays}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A color filter array for a reflective display device includes a plurality of first filter arrays, a plurality of second filter arrays, and a plurality of third filter arrays. Each of the first filter arrays has a plurality of first filter patterns separated from each other. Each of the second filter arrays has a plurality of second filter patterns separated from each other. Each of the third filter arrays has a plurality of third filter patterns separated from each other. Each of the first filter arrays is adjacent to one of the second filter arrays and one of the third filter arrays.

## Claims

### Claim 1

A color filter array for a reflective display device, comprising:
a plurality of first filter arrays, each of the first filter arrays having a plurality of first filter patterns separated from each other;
a plurality of second filter arrays, each of the second filter arrays having a plurality of second filter patterns separated from each other; and
a plurality of third filter arrays, each of the third filter arrays having a plurality of third filter patterns separated from each other, and each of the first filter arrays being adjacent to one of the second filter arrays and one of the third filter arrays.

### Claim 2 (depends on 1)

The color filter array of claim 1, wherein each of the first filter arrays, each of the second filter arrays, and each of the third filter arrays are rectangular when viewed from above.

### Claim 3 (depends on 2)

The color filter array of claim 2, wherein each of the first filter arrays is adjacent to and substantially aligned with the one of the second filter arrays and the one of the third filter arrays along its length direction, and each of the first filter arrays is adjacent to and substantially aligned with another of the second filter arrays and another of the third filter arrays along its width direction.

### Claim 4 (depends on 2)

The color filter array of claim 2, wherein each of the first filter arrays is arranged in a staggered arrangement with the one of the second filter arrays and the one of the third filter arrays along its width direction or its length direction.

### Claim 5 (depends on 1)

The color filter array of claim 1, wherein each of the first filter arrays has a ratio of a length to a width between 1.8:1 and 5:1.

### Claim 6 (depends on 1)

The color filter array of claim 1, wherein a ratio of a width of each of the first filter arrays to a width of each of the first filter patterns is between 2:1 and 5:1.

### Claim 7 (depends on 1)

The color filter array of claim 1, wherein a ratio of a width of each of the first filter patterns to a spacing between two adjacent of the first filter patterns is between 1:1 and 3:1.

### Claim 8

A color filter array for a reflective display device, comprising:
a plurality of first filter units;
a plurality of second filter units; and
a plurality of third filter units, each of the first filter units being adjacent to one of the second filter units and one of the third filter units along a first direction, and one of the first filter units being adjacent to and arranged in a staggered arrangement with another of the second filter units and another of the third filter units along a second direction, and the first direction and the second direction being perpendicular to each other.

### Claim 9 (depends on 8)

The color filter array of claim 8, wherein each of the first filter units, each of the second filter units, and each of the third filter units are rectangular when viewed from above.

### Claim 10 (depends on 9)

The color filter array of claim 9, wherein the first direction is a length direction of each of the first filter units, and the second direction is a width direction of each of the first filter units.

### Claim 11 (depends on 8)

The color filter array of claim 8, wherein a projection of the first filter unit in a second direction partially overlaps with the other of the second filter units.

### Claim 12 (depends on 8)

The color filter array of claim 8, wherein an edge of the first filter unit is aligned with an edge of the other of the third filter units along the second direction.

### Claim 13 (depends on 8)

The color filter array of claim 8, wherein a ratio of a width of each of the first filter units to a length of each of the first filter units is greater than or equal to 1/3.