# US 12,183,864 B2 · Electronic device

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- Number: US 12,183,864 B2
- Document ID: US12183864B2
- Status: Granted
- Kind: B2
- Application number: 17/534,473
- Filed: 2021-11-24
- Published: 2022-06-30
- Granted: 2024-12-31
- Earliest claimed: 2020-12-24
- Assignees: Innolux Corporation
- Applicants: InnoLux Corporation
- Inventors: Chun-Hsien Lin
- Web page: https://patentgrep.com/patent/US12183864B2

## CPC

- H10H 20/857: Interconnections, e.g. lead-frames, bond wires or solder balls
- G09G 3/006: {Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309)}
- H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout}
- H10W 90/00: Package configurations
- G02F 1/1309: {Repairing; Testing}
- G02F 1/13454: {Drivers integrated on the active matrix substrate (G02F1/136277 takes precedence)}
- G02F 2203/69: Arrangements or methods for testing or calibrating a device
- G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters}
- 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 2330/12: Test circuits or failure detection circuits included in a display system, as permanent part thereof
- H10K 59/121: characterised by the geometry or disposition of pixel elements
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- 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)
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

An electronic device including a substrate, an electronic unit, a data line, a control unit, a test pad and a test switch element is provided by the present disclosure. The substrate includes a first surface and a second surface opposite to the first surface, wherein the first surface includes an active area. The electronic unit is disposed on the substrate and located in the active area. The data line is disposed on the substrate. The control unit is disposed on the substrate and located in the active area, and the control unit is electrically connected between the electronic unit and the data line. The test pad is disposed on the second surface of the substrate. The test switch element is disposed on the substrate and located in the active area, and the test switch element is electrically connected between the data line and the test pad.

## Claims

### Claim 1

An electronic device, comprising:
a substrate including a first surface and a second surface opposite to the first surface, wherein the first surface includes an active area;
an electronic unit disposed on the substrate and located in the active area;
a data line disposed on the substrate;
a control unit disposed on the substrate and located in the active area, wherein the control unit is electrically connected between the electronic unit and the data line;
a test pad disposed on the second surface of the substrate; and
a test switch element disposed on the substrate and located in the active area, wherein the test switch element is electrically connected between the data line and the test pad.

### Claim 2 (depends on 1)

The electronic device according to claim 1, wherein the electronic device comprises:
a plurality of the test switch elements, wherein the plurality of test switch elements include a first test switch element and a second test switch element,
wherein the electronic device is divided into a plurality of pixel areas, the plurality of pixel areas include a first pixel column and a second pixel column extending along a first direction, the first test switch element is disposed in the first pixel column, and the second test switch element is disposed in the second pixel column.

### Claim 3 (depends on 2)

The electronic device according to claim 2, wherein the plurality of pixel areas include a first pixel row and a second pixel row extending along a second direction, the first direction is different from the second direction, the first test switch element is disposed in the first pixel row, and the second test switch element is disposed in the second pixel row.

### Claim 4 (depends on 2)

The electronic device according to claim 2, wherein the plurality of pixel areas include a first pixel row extending along a second direction, the first direction is different from the second direction, and the first test switch element and the second test switch element are disposed in the first pixel row.

### Claim 5 (depends on 2)

The electronic device according to claim 2, wherein the first pixel column includes a plurality of first sub-pixel areas and a plurality of second sub-pixel areas arranged along the first direction, the plurality of test switch elements further include a third test switch element, the first test switch element is disposed in one of the plurality of first sub-pixel areas, and the third test switch element is disposed in one of the plurality of second sub-pixel areas.

### Claim 6 (depends on 5)

The electronic device according to claim 5, wherein the plurality of pixel areas include a first pixel row and a second pixel row extending along a second direction, the first direction is different from the second direction, the first test switch element is disposed in the first pixel row, and the third test switch element is disposed in the second pixel row.

### Claim 7 (depends on 5)

The electronic device according to claim 5, wherein the first pixel column further includes a plurality of third sub-pixel areas along the first direction, the plurality of test switch elements further include a fourth test switch element, and the fourth test switch element is disposed in one of the plurality of third sub-pixel areas.

### Claim 8 (depends on 7)

The electronic device according to claim 7, wherein the plurality of pixel areas include a first pixel row, a second pixel row and a third pixel row extending along a second direction, the first direction is different from the second direction, the first test switch element is disposed in the first pixel row, the third test switch element is disposed in the second pixel row, and the fourth test switch element is disposed in the third pixel row.

### Claim 9 (depends on 5)

The electronic device according to claim 5, wherein the electronic device includes a plurality of the electronic units, the plurality of electronic units include a first light emitting unit and a second light emitting unit, the first light emitting unit is located in one of the plurality of first sub-pixel areas, the second light emitting unit is located in one of the plurality of second sub-pixel areas, and the first light emitting unit and the second light emitting unit are light emitting units of different colors.

### Claim 10 (depends on 5)

The electronic device according to claim 5, wherein the electronic device includes a plurality of first electronic units respectively disposed in the plurality of first sub-pixel areas of the first pixel column, and the plurality of first electronic units are electrically connected to the first test switch element.

### Claim 11 (depends on 1)

The electronic device according to claim 1, wherein the electronic device further includes a test signal line electrically connected between the test switch element and the test pad.

### Claim 12 (depends on 1)

The electronic device according to claim 1, wherein the electronic unit is a light emitting unit.

### Claim 13 (depends on 2)

The electronic device according to claim 2, wherein the plurality of test switch elements further include a fifth test switch element, the plurality of pixel areas further include a third pixel column extending along the first direction, and the fifth test switch element is disposed in the third pixel column.

### Claim 14 (depends on 13)

The electronic device according to claim 13, wherein the plurality of pixel areas include a first pixel row, a second pixel row and a third pixel row extending along a second direction, the first direction is different from the second direction, the first test switch element is disposed in the first pixel row, the second test switch element is disposed in the second pixel row, and the fifth test switch element is disposed in the third pixel row.

### Claim 15 (depends on 13)

The electronic device according to claim 13, wherein the plurality of pixel areas include a first pixel row extending along a second direction, the first direction is different from the second direction, and the first test switch element, the second test switch element and the fifth test switch element are disposed in the first pixel row.

### Claim 16 (depends on 1)

The electronic device according to claim 1, wherein the electronic device further includes a bonding pad disposed on the second surface of the substrate, and the bonding pad is electrically connected to the data line.

### Claim 17 (depends on 1)

The electronic device according to claim 1, wherein the test switch element includes a thin film transistor.

### Claim 18 (depends on 1)

The electronic device according to claim 1, wherein the electronic device further includes a driving unit disposed on the substrate, and the driving unit is electrically connected between the electronic unit and the control unit.

### Claim 19 (depends on 1)

The electronic device according to claim 1, wherein the electronic device further includes an electrostatic discharge element disposed on the first surface of the substrate, wherein the electrostatic discharge element is disposed at an edge of the active area.

### Claim 20 (depends on 19)

The electronic device according to claim 19, wherein the electronic device further includes a test signal line, and the electrostatic discharge element is electrically connected to the test signal line and the data line.