# US 10,312,472 B2 · Display panel

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- Number: US 10,312,472 B2
- Document ID: US10312472B2
- Status: Granted
- Kind: B2
- Application number: 16/000,187
- Filed: 2018-06-05
- Published: 2018-12-13
- Granted: 2019-06-04
- Earliest claimed: 2017-06-13
- Assignees: Au Optronics Corporation
- Applicants: AU Optronics Corporation
- Inventors: Yi-Hong Chen; Chung-Chia Chen; Meng-Ting Lee
- Web page: https://patentgrep.com/patent/US10312472B2

## CPC

- H10K 59/173: comprising banks or shadow masks
- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 59/126: Shielding, e.g. light-blocking means over the TFTs
- H10K 59/38: comprising colour filters or colour changing media [CCM]
- H10K 59/875: {Arrangements for extracting light from the devices}
- H10K 59/8792: {comprising light absorbing layers, e.g. black layers}
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A display panel includes a pixel array layer and a light-blocking layer. The pixel array layer has a plurality of pixel blocks, and each pixel block has a first side. The light-blocking layer disposed above the pixel array layer and has a plurality of first light-blocking belts corresponding to the pixel blocks. The first light-blocking belt at least partially extends along the first side of its corresponding pixel block. Accordingly, the outgoing light emitted at a larger angle from the pixel blocks can be at least partially blocked.

## Claims

### Claim 1

A display panel, comprising:
a pixel array layer having a plurality of pixel blocks, each of the pixel blocks having a first side;
a light-blocking layer disposed above the pixel array layer, the light-blocking layer having a plurality of first light-blocking belts corresponding to the pixel blocks, each of the first light-blocking belts at least partially extending along the first side of its corresponding pixel block;
wherein when a vertical projection of the first light-blocking belt on the pixel array layer does not overlap the first side of its corresponding pixel block, the following equation exists:
(H×tan 30°−D1)/W≥70%
wherein when the vertical projection of the first light-blocking belt on the pixel array layer overlaps the first side of its corresponding pixel block, the following equation exists:
(H×tan 30°+D0)/W≥70%
wherein:
D1: a distance between the vertical projection of the first light-blocking belt on the pixel array layer and the first side of its corresponding pixel block in a direction perpendicular to the first side;
D0: a width of an overlapping area of the vertical projection of the first light-blocking belt on the pixel array layer and the pixel block in the direction perpendicular to the first side;
H: a distance between the first light-blocking belt and its corresponding pixel block in a direction perpendicular to the pixel array layer; and
W: a width of the pixel block in the direction perpendicular to the first side.

### Claim 2 (depends on 1)

The display panel of claim 1, wherein the pixel block has an extending direction; the extending direction is substantially parallel to an extending direction of the first side.

### Claim 3 (depends on 1)

The display panel of claim 1, wherein the pixel block has a second side opposite to the first side; a distance D2 is between the second side and the vertical projection of a closest first light-blocking belt on the pixel array layer in a direction perpendicular to the second side; D2 is larger than D1.

### Claim 4 (depends on 1)

The display panel of claim 1, wherein the pixel block has a third side substantially perpendicular to the first side; the light-blocking layer has a plurality of second light-blocking belts respectively corresponding to the pixel blocks; each of the second light-blocking belts at least partially extends along the third side of its corresponding pixel block; a distance D3 is between the third side and the vertical projection of its corresponding second light-blocking belt on the pixel array layer in a direction perpendicular to the third side; D3 is larger than D1.

### Claim 5 (depends on 1)

The display panel of claim 1, wherein the light-blocking layer has a plurality of color filtering blocks distributed between the first light-blocking belts, vertical projections of the color filtering blocks on the pixel array layer at least partially overlap the pixel blocks, respectively.

### Claim 6 (depends on 5)

The display panel of claim 5, wherein a width of the vertical projection of each of the color filtering blocks on the pixel array layer is larger than a width of its corresponding pixel block in the direction perpendicular to the first side.

### Claim 7 (depends on 1)

The display panel of claim 1, wherein the pixel block is formed by a self-luminous light source.

### Claim 8 (depends on 1)

The display panel of claim 1, wherein the pixel array layer is disposed on a first substrate; the light-blocking layer is disposed on a second substrate; at least one of the first substrate and the second substrate has an alignment mark for alignment of the first substrate and the second substrate.

### Claim 9 (depends on 1)

The display panel of claim 1, wherein at least a portion of the pixel blocks are arranged side by side along a direction parallel to the first side and correspond to a same first light-blocking belt.