# US 2021/0082884 A1 · Display element, display device and method for producing a contact structure in a plurality of display elements

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- Number: US 2021/0082884 A1
- Document ID: US20210082884A1
- Status: Published application
- Kind: A1
- Application number: 16/955,552
- Filed: 2019-01-16
- Published: 2021-03-18
- Earliest claimed: 2018-01-18
- Assignees: OSRAM OLED GmbH
- Applicants: OSRAM OLED GmbH
- Inventors: Thomas SCHWARZ
- Web page: https://patentgrep.com/patent/US20210082884A1

## CPC

- G06F 3/1446: {display composed of modules, e.g. video walls}
- H10W 90/00: Package configurations
- G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED]
- G09G 2300/026: Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
- G09G 2300/0426: Layout of electrodes and connections
- G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

A display element for a video wall having a plurality of light-emitting components on a carrier, which has a front side, a rear side and an edge side running between the front and rear sides. The circuit structures are arranged on the front side and the rear side and are electrically conductively connected to one another via a contact structure arranged on the edge side. The edge side is embodied in a scored, broken, ground, polished, melted, sawn, chamfered, rounded or notched way.

## Claims

### Claim 1

A display element for a video wall having a plurality of light-emitting components on a carrier which has a front side, a rear side and an edge side running between the front and rear sides, wherein circuit structures are arranged on the front side and the rear side and are electrically conductively connected to one another via a contact structure arranged on the edge side, and wherein the edge side is embodied in a scored, broken, ground, polished, melted, sawn, chamfered, rounded or notched way.

### Claim 2 (depends on 1)

The display element according to claim 1,
wherein the contact structure comprises a plurality of electrically conductive contact regions, which each connect a region of the circuit structure on the front side extending to the edge side with a region of the circuit structure on the rear side extending to the edge side.

### Claim 3 (depends on 1, 2)

The display element according to claim 1 or 2,
wherein the contact region comprises edges running from the front to the rear side, which edges are parallel, concave or convex to one another.

### Claim 4 (depends on 2)

The display element according to claim 2,
wherein a region of electrically insulating material is arranged on the edge side between two adjacent contact regions.

### Claim 5 (depends on 1)

The display element according to claim 1,
wherein the carrier has a rectangular basic shape with opposite first edge side regions and opposite second edge side regions running perpendicularly to the first edge side regions, and the contact structure
is arranged on only one of the first and second edge side regions,
or is arranged on only one of the first edge side regions and on only one of the second edge side regions,
or is arranged only on either the first edge side regions or only on the second edge side regions,
or is arranged on three of the first and second edge side regions,
or is arranged on both the first and second edge side regions.

### Claim 6 (depends on 1)

The display element according to claim 1,
comprising a plurality of pixels arranged in rows and columns, wherein one or more chips emitting red, green and blue light are arranged in each pixel.

### Claim 7 (depends on 1)

The display element according to claim 1,
wherein the circuit structures comprise row and column conductor tracks and a drive circuit or parts of a drive circuit for selectively driving the components.

### Claim 8 (depends on 1)

The display element according to claim 1,
wherein the circuit structure comprises on the front side and/or on the rear side a plurality of conductive structure layers arranged one above the other, at least one of which is connected to the contact structure.

### Claim 9

(canceled)

### Claim 10 (depends on 1)

A display device with a plurality of display elements according to claim 1, arranged in such a way that at least one contact region of the contact structure of a display element is adjacent to at least one contact region of the contact structure of a further display element and is electrically conductively connected thereto by a connecting means.

### Claim 11 (depends on 10)

The display device according to claim 10,
wherein the connecting means is arranged in a gap between the display elements and is embodied as solder, adhesive or conductive paste.

### Claim 12

A method for producing a contact structure in a plurality of display elements, the method comprising:
aligning a plurality of carriers with circuit structures on front and rear sides so that edge side regions of the carriers on which the contact structures are to be applied point in a same direction; and
applying the contact structures.

### Claim 13 (depends on 12)

The method according to claim 12,
wherein spacers are placed between the carriers.

### Claim 14 (depends on 12)

The method according to claim 12,
wherein the application is carried out by a coating jet, by plasma coating, by vapour deposition or by a planar layer application with subsequent targeted material removal.