IP Library › Granted Patent US 12,578,610
Granted Patent B2
US 12,578,610 · App. 19/102,284 · Granted Mar 17, 2026

Glazing unit with optical modulation and reception of radio frequency signal

Inventors: Anthony John Slack (Lorgues, FR); Romaric Mathieu Massard (Eindhoven, NL); David Richard Thomas (Opio, FR)
Assignee: ELSTAR DYNAMICS PATENTS B.V.
G02F1/167E06B9/24G02F1/16761G02F1/1685E06B2009/2405E06B2009/2417E06B2009/2464G02F2201/124
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Quick Facts
Patent No.
US 12,578,610
App. No.
19/102,284
Granted
Mar 17, 2026
Kind
B2
Abstract

A glazing unit ( 101 ) is provided configured for reception of radio frequency signals, the glazing unit ( 101 ) has an optical layer ( 143 ) including electrophoretic charged particles and being arranged between a first substrate ( 141 ) and a second substrate ( 142 ), electrodes ( 122, 123 ) on the substrates ( 141, 142 ) cooperate in the electrophoretic modulation of the charged particles' position causing modulation of light passing through the glazing unit ( 101 ). The glazing unit ( 101 ) has at least one antenna ( 121 ) for reception of a radio frequency signal. The antenna ( 121 ) may be arranged on a side of a substrate ( 141, 142 ) or on a side of a pane ( 111, 112 ), e.g., glass pane.

Claims (81)

1 . A glazing unit configured for reception of radio frequency signals, the glazing unit comprising:

a first pane and a second pane, the first and second pane being parallel to each other,

a first substrate and a second substrate,

the first substrate and the second substrate being arranged in the glazing unit parallel to the first and second pane,

at least two interdigitated electrodes being arranged on a second side of the first substrate, the second side of the first substrate being opposite the first side of the first substrate, the second side of the first substrate facing a first side of the second substrate,

at least two interdigitated electrodes being arranged on the first side of the second substrate, the first side of the second substrate facing the first substrate,

at least one antenna for reception of a radio frequency signal, the antenna being arranged on a side of the first substrate or on a side of the first pane,

an optical layer arranged between the first and second substrate, charged or chargeable particles being in fluidic suspension in the optical layer, the particles and electrodes on the first and second substrate being configured to cooperate in electrophoretic modulation of the particles' position causing modulation of light passing through the glazing unit,

wherein the at least two interdigitated electrodes on the first substrate or part thereof are configured as the at least one antenna, and the at least one antenna comprises one or more of:

a first antenna configured to capture electric power from the received radio frequency signal,

a second antenna configured to recover RF modulated data from the received radio frequency signal,

a third antenna configured to re-transmit the recover RF modulated data after re-modulation.

2 . A glazing unit as in claim 1 , wherein

the first side of the first substrate is facing the first pane, a second side of the second substrate facing the second pane, the first and second substrate being arranged inside the glazing unit, or

a second side of the second substrate facing the first pane, the first and second substrate being arranged at an exterior side of the glazing unit.

3 . A glazing unit according to claim 1 , wherein the first pane is arranged for facing a building exterior, the second pane being arranged for facing the building interior, or wherein the first pane is arranged for facing a vehicle exterior, the second pane being arranged for facing the vehicle interior.

4 . A glazing unit according to claim 1 , the glazing unit comprising:

a clip surrounding the glazing unit, the first and second pane being attached to the clip, the clip being arranged to space the first and second pane from each other.

5 . A glazing unit according to claim 1 , a capacitator connected to the antenna to tune the antenna to a frequency above 100 MHz.

6 . A glazing unit according to claim 1 , wherein the interdigitated electrodes on the first and second substrate are controlled with an electric signal with a frequency below 1k Hz.

7 . A glazing unit according to claim 1 , wherein the at least one antenna comprise one or more patch elements configured as patch antenna.

8 . A glazing unit according to claim 1 , comprising a radio frequency demodulator, and a radio frequency modulator.

9 . A glazing unit as in claim 1 , comprising a controller connected to the at least two interdigitated electrodes on the first substrate and/or to the at least two interdigitated electrodes on the second substrate for controlling the optical layer, the controller being configured to receive a control signal instructing the optical layer control.

10 . A glazing unit as in claim 1 , wherein the controller is arranged to obtain electrical power from the antenna signal for driving, at least in part, the electrodes on the first and second substrates.

11 . A glazing unit configured for reception of radio frequency signals, the glazing unit comprising:

a first pane and a second pane, the first and second pane being parallel to each other,

a first substrate and a second substrate,

the first substrate and the second substrate being arranged in the glazing unit parallel to the first and second pane,

at least two interdigitated electrodes being arranged on a second side of the first substrate, the second side of the first substrate being opposite the first side of the first substrate, the second side of the first substrate facing a first side of the second substrate,

at least two interdigitated electrodes being arranged on the first side of the second substrate, the first side of the second substrate facing the first substrate,

at least one antenna for reception of a radio frequency signal, the antenna being arranged on a side of the first substrate or on a side of the first pane,

an optical layer arranged between the first and second substrate, charged or chargeable particles being in fluidic suspension in the optical layer, the particles and electrodes on the first and second substrate being configured to cooperate in electrophoretic modulation of the particles' position causing modulation of light passing through the glazing unit,

wherein the at least two interdigitated electrodes on the first substrate or part thereof are configured as the at least one antenna,

wherein the glazing unit further comprises a controller, the controller being arranged to recover data from the antenna signal communicated in said antenna signal, and/or of for re-modulating said recovered data and transmitting the re-modulated data over a further antenna.

12 . A glazing unit as in claim 1 , wherein an isolating layer is arranged between the first substrate and the second pane, wherein the isolating layer may be vacuum or comprise an isolating gas.

13 . A glazing unit configured for reception of radio frequency signals, the glazing unit comprising:

a first pane and a second pane, the first and second pane being parallel to each other,

a first substrate and a second substrate,

the first substrate and the second substrate being arranged in the glazing unit parallel to the first and second pane,

at least two interdigitated electrodes being arranged on a second side of the first substrate, the second side of the first substrate being opposite the first side of the first substrate, the second side of the first substrate facing a first side of the second substrate,

at least two interdigitated electrodes being arranged on the first side of the second substrate, the first side of the second substrate facing the first substrate,

at least one antenna for reception of a radio frequency signal, the antenna being arranged on a side of the first substrate or on a side of the first pane,

an optical layer arranged between the first and second substrate, charged or chargeable particles being in fluidic suspension in the optical layer, the particles and electrodes on the first and second substrate being configured to cooperate in electrophoretic modulation of the particles' position causing modulation of light passing through the glazing unit,

wherein the at least two interdigitated electrodes on the first substrate or part thereof are configured as the at least one antenna,

wherein the glazing unit further comprises a capacitor, wherein the capacitor comprises multiple interdigitated dielectric fins and conducting fins, a ground plane being connected a first outer dielectric fin and a connector to a second outer dielectric fin, a first connection of antenna being connected to the first outer dielectric fin and a second connection of antenna being connected to the connector.

14 . A glazing unit configured for reception of radio frequency signals, the glazing unit comprising:

a first pane and a second pane, the first and second pane being parallel to each other,

a first substrate and a second substrate,

the first substrate and the second substrate being arranged in the glazing unit parallel to the first and second pane,

at least two interdigitated electrodes being arranged on a second side of the first substrate, the second side of the first substrate being opposite the first side of the first substrate, the second side of the first substrate facing a first side of the second substrate,

at least two interdigitated electrodes being arranged on the first side of the second substrate, the first side of the second substrate facing the first substrate,

at least one antenna for reception of a radio frequency signal, the antenna being arranged on a side of the first substrate or on a side of the first pane,

an optical layer arranged between the first and second substrate, charged or chargeable particles being in fluidic suspension in the optical layer, the particles and electrodes on the first and second substrate being configured to cooperate in electrophoretic modulation of the particles' position causing modulation of light passing through the glazing unit,

wherein the at least two interdigitated electrodes on the first substrate or part thereof are configured as the at least one antenna,

wherein the glazing unit further comprises from the exterior of the first pane: the at least one antenna, a dielectric layer, a transparent conductive layer, and the first substrate, in that order, the dielectric layer isolating the at least one antenna from the transparent conductive layer.

15 . A glazing unit configured for reception of radio frequency signals, the glazing unit comprising:

a first pane and a second pane, the first and second pane being parallel to each other,

a first substrate and a second substrate,

the first substrate and the second substrate being arranged in the glazing unit parallel to the first and second pane,

at least two interdigitated electrodes being arranged on a second side of the first substrate, the second side of the first substrate being opposite the first side of the first substrate, the second side of the first substrate facing a first side of the second substrate,

at least two interdigitated electrodes being arranged on the first side of the second substrate, the first side of the second substrate facing the first substrate,

at least one antenna for reception of a radio frequency signal, the antenna being arranged on a side of the first substrate or on a side of the first pane,

an optical layer arranged between the first and second substrate, charged or chargeable particles being in fluidic suspension in the optical layer, the particles and electrodes on the first and second substrate being configured to cooperate in electrophoretic modulation of the particles' position causing modulation of light passing through the glazing unit,

wherein the at least two interdigitated electrodes on the first substrate or part thereof are configured as the at least one antenna,

wherein

arranged on the first side of the first substrate is an ITO layer, a dielectric layer, and the at least one antenna, or

arranged on a side of the first pane facing away of the first substrate is a transparent conductive layer, a dielectric layer, and the at least one antenna, or

arranged on a side of the first pane facing away of the first substrate are the at least one antenna and arranged on the first side of the first substrate is a transparent conductive layer.

16 . A glazing unit as in claim 1 , wherein the at least one antenna are arranged on the second side of the first substrate among the at least two interdigitated electrodes.

17 . A glazing unit configured for reception of radio frequency signals, the glazing unit comprising:

a first pane and a second pane, the first and second pane being parallel to each other,

a first substrate and a second substrate,

the first substrate and the second substrate being arranged in the glazing unit parallel to the first and second pane,

at least two interdigitated electrodes being arranged on a second side of the first substrate, the second side of the first substrate being opposite the first side of the first substrate, the second side of the first substrate facing a first side of the second substrate,

at least two interdigitated electrodes being arranged on the first side of the second substrate, the first side of the second substrate facing the first substrate,

at least one antenna for reception of a radio frequency signal, the antenna being arranged on a side of the first substrate or on a side of the first pane,

an optical layer arranged between the first and second substrate, charged or chargeable particles being in fluidic suspension in the optical layer, the particles and electrodes on the first and second substrate being configured to cooperate in electrophoretic modulation of the particles' position causing modulation of light passing through the glazing unit,

wherein the at least two interdigitated electrodes on the first substrate or part thereof are configured as the at least one antenna,

wherein the at least two interdigitated electrodes on the second side of the first substrate comprise one or more patches, the patches being isolated from the remainder of the at least two interdigitated electrodes on the second side of the first substrate for high frequency signals but not for low frequency signals.

18 . A glazing unit as in claim 1 , wherein the first pane and the first substrate are combined.

19 . A first substrate having a first side and a second side, arranged on the first side of the first substrate is a transparent conductive layer, a dielectric layer, and at least one antenna for reception of a radio frequency signal, and arranged on the second side of the first substrate are at least two interdigitated electrodes, wherein the at least two interdigitated electrodes on the first substrate or part thereof are configured as the at least one antenna, and the at least one antenna comprises one or more of: a first antenna configured to capture electric power from the received radio frequency signal, a second antenna configured to recover RF modulated data from the received radio frequency signal, a third antenna configured to re-transmit the recovered RF modulated data after re-modulation.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 11, 2025
From: SLACK, ANTHONY JOHN; MASSARD, ROMARIC MATHIEU; THOMAS, DAVID RICHARD
To: ELSTAR DYNAMICS PATENTS B.V.
Reel/Frame 070818/0379 →
Priority Claims (1)
EP 22190032 · Aug 11, 2022 · regional
Continuity (1)
Related Publication 20250258416A1 · Aug 14, 2025
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