# US 12,113,279 B2 · Device incorporating an IR signal transmissive region

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- Number: US 12,113,279 B2
- Document ID: US12113279B2
- Status: Granted
- Kind: B2
- Application number: 17/767,858
- Filed: 2021-09-22
- Published: 2023-07-06
- Granted: 2024-10-08
- Earliest claimed: 2020-09-22
- Assignees: OTI Lumionics Inc.
- Applicants: OTI Lumionics, Inc.
- Inventors: Yi-Lu Chang; Qi Wang; Zhibin Wang; Michael Helander; Yingjie Zhang
- Web page: https://patentgrep.com/patent/US12113279B2

## CPC

- H01Q 17/004: {using non-directional dissipative particles, e.g. ferrite powders (H01Q17/005 takes precedence; flake-like H01Q17/002)}
- G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer}
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A semiconductor device having a plurality of layers deposited on a substrate and extending in at least one lateral aspect defined by a lateral axis thereof comprises at least one EM radiation-absorbing layer deposited on a first layer surface and comprising a discontinuous layer of at least one particle structure comprising a deposited material. The at least one particle structure of the at least one EM radiation-absorbing layer facilitates absorption of EM radiation therein in at least a part of at least one of a visible spectrum and a UV spectrum while substantially allowing transmission of EM radiation therein in at least a part of at least one of an IR and an NIR spectrum.

## Claims

### Claim 1

A semiconductor device having a plurality of layers deposited on a substrate and extending in at least one lateral aspect defined by a lateral axis thereof, comprising:
at least one electromagnetic (EM) radiation-absorbing layer deposited on a first layer surface and comprising a discontinuous layer of at least one particle structure comprising a deposited material;
wherein the at least one particle structure of the at least one EM radiation-absorbing layer facilitates absorption of EM radiation therein in at least a part of at least one of a visible spectrum and an ultraviolet (UV) spectrum while substantially allowing transmission of EM radiation therein in at least a part of at least one of an infrared (IR) spectrum and a near infrared (NIR) spectrum.

### Claim 2 (depends on 1)

The device of claim 1, wherein the deposited material is a metal.

### Claim 3 (depends on 2)

The device of claim 2, wherein the deposited material comprises at least one of magnesium, silver, and ytterbium.

### Claim 4 (depends on 1)

The device of claim 1, wherein the deposited material is co-deposited with a co-deposited dielectric material.

### Claim 5 (depends on 1)

The device of claim 1, wherein the at least one particle structure has a characteristic feature selected from at least one of: a size, size distribution, shape, surface coverage, configuration, deposited density, and composition.

### Claim 6 (depends on 5)

The device of claim 5, wherein the at least one particle structure has a percentage coverage of at least one of between about: 10-50%, 10-45%, 12-40%, 15-40%, 15-35%, 18-35%, 20-35%, and 20-30%.

### Claim 7 (depends on 5)

The device of claim 5, wherein a majority of the at least one particle structures have a maximum feature size of no more than at least one of about: 40 nm, 35 nm, 30 nm, 25 nm, and 20 nm.

### Claim 8 (depends on 5)

The device of claim 5, wherein the at least one particle structure has a feature size that is at least one of a mean and a median that is at least one of between about: 5-40 nm, 5-30 nm, 8-30 nm, 10-30 nm, 8-25 nm, 10-25 nm, 8-20 nm, 10-20 nm, 10-15 nm, and 8-15 nm.

### Claim 9 (depends on 1)

The device of claim 1, wherein the at least one particle structure comprises a seed about which the deposited material tends to coalesce.

### Claim 10 (depends on 1)

The device of claim 1, further comprising a patterning coating disposed on a second layer surface, wherein:
the first layer surface is an exposed layer surface of the patterning coating;
an initial sticking probability against deposition of the deposited material on a surface of the patterning coating is substantially less than at least one of: 0.3 and the initial sticking probability against deposition of the deposited material on the second layer surface, such that the patterning coating is substantially devoid of a closed coating of the deposited material.

### Claim 11 (depends on 10)

The device of claim 10, wherein the patterning coating comprises at least one patterning material.

### Claim 12 (depends on 10)

The device of claim 10, wherein the patterning coating comprises a first patterning material having a first initial sticking probability against deposition of the deposited material and a second patterning material having a second initial sticking probability against deposition of the deposited material, wherein the first initial sticking probability is substantially less than the second initial sticking probability.

### Claim 13 (depends on 12)

The device of claim 12, wherein the first patterning material is a nucleation inhibiting coating (NIC) material and the second patterning material is selected from at least one of an electron transport layer (ETL) material, Liq, and lithium fluoride (LiF).

### Claim 14 (depends on 1)

The device of claim 1, wherein the at least one EM radiation-absorbing layer extending across a first portion of the at least one lateral aspect, the device adapted to pass at least one EM signal through the first portion, at an angle relative to the layers.

### Claim 15 (depends on 14)

The device of claim 14, wherein the at least one EM signal has a wavelength range in at least a part of at least one of the IR spectrum and the NIR spectrum.

### Claim 16 (depends on 14)

The device of claim 14, wherein the first portion is substantially devoid of a closed coating of the deposited material.

### Claim 17 (depends on 14)

The device of claim 14, wherein the first portion corresponds to at least part of a signal transmissive region.

### Claim 18 (depends on 14)

The device of claim 14, wherein the device is adapted to accept the at least one EM signal therethrough, for exchange with at least one under-display component.

### Claim 19 (depends on 18)

The device of claim 18, wherein the at least one under-display component comprises at least one of:
a receiver adapted to receive; and
a transmitter adapted to emit, the at least one EM signal passing through the device.

### Claim 20 (depends on 19)

The device of claim 19, wherein the receiver is an IR detector and the transmitter is an IR emitter.

### Claim 21 (depends on 19)

The device of claim 19, wherein the transmitter emits a first EM signal and the receiver detects a second EM signal that is a reflection of the first EM signal.

### Claim 22 (depends on 21)

The device of claim 21, wherein the exchange of the first and second EM signals provides biometric authentication of a user.

### Claim 23 (depends on 18)

The device of claim 18, wherein the device forms a display panel of a user device enclosing the under-display component therewith.

### Claim 24 (depends on 14)

The device of claim 14, wherein a second portion of the at least one lateral aspect comprises at least one emissive region for emitting the at least one EM signal at an angle relative to the layers.

### Claim 25 (depends on 24)

The device of claim 24, further comprising at least one semiconducting layer disposed on a layer thereof, wherein:
each emissive region comprises a first electrode and a second electrode,
the first electrode is disposed between the substrate and the at least one semiconducting layer, and
the at least one semiconducting layer is disposed between the first electrode and the second electrode.

### Claim 26 (depends on 25)

The device of claim 25 further comprising at least one closed coating of a deposited material disposed on an exposed layer surface thereof in the second portion.

### Claim 27 (depends on 26)

The device of claim 26, wherein the second electrode comprises the at least one closed coating of the deposited material.