# US 12,216,109 B2 · Biosensor, biosensor array and device

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- Number: US 12,216,109 B2
- Document ID: US12216109B2
- Status: Granted
- Kind: B2
- Application number: 17/388,630
- Filed: 2021-07-29
- Published: 2022-02-10
- Granted: 2025-02-04
- Earliest claimed: 2020-08-05
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Hyun Bum Kang; Gae Hwang Lee; Jong Won Chung; Joo Young Kim; Youngjun Yun; Suk Gyu Hahm
- Web page: https://patentgrep.com/patent/US12216109B2

## CPC

- G01N 33/48: Biological material, e.g. blood, urine (G01N33/02, G01N33/26, G01N33/44, G01N33/46 take precedence); Haemocytometers (counting blood corpuscules distributed over a surface by scanning the surface G06M11/02)
- H05K 1/0283: {Stretchable printed circuits}
- H10F 39/803: {Pixels having integrated switching, control, storage or amplification elements}
- H10K 59/122: Pixel-defining structures or layers, e.g. banks
- H10K 59/60: OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K 65/00: Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element and at least one organic radiation-sensitive element, e.g. organic opto-couplers (organic image sensors integrated with organic light-emitting devices H10K39/34; OLED displays integrated with photosensors H10K59/13)
- H10K 77/111: {Flexible substrates}
- H05K 2201/0187: with regions of different dielectrics in the same layer, e.g. in a printed capacitor for locally changing the dielectric properties
- H05K 2201/10106: Light emitting diode [LED]
- H05K 2201/10151: Sensor
- Y02E 10/549: Organic PV cells
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A biosensor includes a stretchable substrate, a pixel defining layer on the stretchable substrate and including a first pixel defining layer at least partially defining a first opening and a second pixel defining layer at least partially defining a second opening, a photo-detecting element at least partially in the first opening, and a first light emitting element at least partially in the second opening, wherein an area of the first pixel defining layer is equal to or greater than about twice an area of the first opening.

## Claims

### Claim 1

A biosensor, comprising:
a stretchable substrate,
a pixel defining layer on the stretchable substrate, the pixel defining layer including
a first pixel defining layer defining a first opening extending through a thickness of the first pixel defining layer, and
a second pixel defining layer defining a second opening extending through
a thickness of the second pixel defining layer,
a photo-detecting element at least partially in the first opening, and
a first light emitting element at least partially in the second opening,
wherein an area of the first pixel defining layer in a plane parallel to an in-plane direction of the stretchable substrate is about 2 times to about 25 times an area of the first opening in the plane parallel to the in-plane direction of the stretchable substrate.

### Claim 2 (depends on 1)

The biosensor of claim 1, wherein the area of the first pixel defining layer is about 2.4 times to about 25 times the area of the first opening.

### Claim 3 (depends on 1)

The biosensor of claim 1, wherein the area of the first pixel defining layer excluding the first opening is greater than the area of the first opening.

### Claim 4 (depends on 3)

The biosensor of claim 3, wherein the area of the first pixel defining layer excluding the first opening is about 1.1 times to about 24 times the area of the first opening.

### Claim 5 (depends on 1)

The biosensor of claim 1, wherein the first pixel defining layer excluding the first opening is in direct contact with the stretchable substrate.

### Claim 6 (depends on 1)

The biosensor of claim 1, wherein an area of the second pixel defining layer is equal to or greater than about twice an area of the second opening.

### Claim 7 (depends on 1)

The biosensor of claim 1, wherein an area of the second pixel defining layer excluding the second opening is greater than an area of the second opening.

### Claim 8 (depends on 1)

The biosensor of claim 1, wherein the second pixel defining layer excluding the second opening is in direct contact with the stretchable substrate.

### Claim 9 (depends on 1)

The biosensor of claim 1, wherein
the first pixel defining layer and the second pixel defining layer are connected to each other, and
a boundary between the first pixel defining layer and the second pixel defining layer located halfway along a gap between an edge of the first opening and an edge of the second opening facing each other.

### Claim 10 (depends on 9)

The biosensor of claim 9, wherein a magnitude of the gap between the edge of the first opening and the edge of the second opening facing each other is about 0.4 times to about 4 times a magnitude of a width of the first opening or a width of the second opening in a direction extending parallel to a direction of the gap.

### Claim 11 (depends on 1)

The biosensor of claim 1, wherein the area of the pixel defining layer is equal to or greater than about twice a sum of the area of the first opening and an area of the second opening.

### Claim 12 (depends on 1)

The biosensor of claim 1, wherein
the photo-detecting element includes
a first electrode and a second electrode facing each other, and
a photoelectric conversion layer between the first electrode and the second electrode, and
an area of an active region of the photo-detecting element is substantially equal to the area of the first opening.

### Claim 13 (depends on 1)

The biosensor of claim 1, wherein
the first light emitting element includes
a third electrode and a fourth electrode facing each other, and
a light emitting layer between the third electrode and the fourth electrode, and
a light emitting area of the first light emitting element is substantially equal to an area of the second opening.

### Claim 14 (depends on 1)

The biosensor of claim 1, wherein the first pixel defining layer and the second pixel defining layer are isolated from direct contact with each other.

### Claim 15 (depends on 1)

The biosensor of claim 1, wherein
the pixel defining layer further includes a third pixel defining layer at least partially defining a third opening extending through a thickness of the third pixel defining layer, and
the biosensor further includes a second light emitting element at least partially in the third opening.

### Claim 16 (depends on 15)

The biosensor of claim 15, wherein an area of the third pixel defining layer is equal to or greater than about twice an area of the third opening.

### Claim 17 (depends on 15)

The biosensor of claim 15, wherein the second light emitting element is configured to emit light having a different wavelength spectrum from light emitted by the first light emitting element.

### Claim 18 (depends on 1)

The biosensor of claim 1, wherein
the stretchable substrate includes a plurality of first regions and a second region between adjacent first regions of the plurality of first regions, the first regions having a first stiffness and the second region having a second stiffness that is lower than the first stiffness, and
the photo-detecting element and the first light emitting element are on separate, respective first regions of the plurality of first regions.

### Claim 19 (depends on 1)

The biosensor of claim 1, wherein the biosensor is a skin-attachable patch typed biosensor or a skin-attachable band typed biosensor.

### Claim 20 (depends on 1)

A biosensor array comprising the biosensor of claim 1.

### Claim 21 (depends on 1)

A device comprising the biosensor of claim 1.