Electronic device

Patent metadata

Field	Value
Publication number	US-2025150061-A1
Application number	US-202418902949-A
Country	US
Kind code	A1
Filing date	Oct 1, 2024
Priority date	Nov 2, 2023
Publication date	May 8, 2025
Grant date	—

Abstract

Disclosed is an electronic device including a substrate, a radio frequency (RF) modulation element, a control circuit and a radio frequency (RF) choke. The RF modulation element, the control circuit and the RF choke are disposed on the substrate. The RF choke is electrically coupled between the RF modulation element and the control circuit. The orthographic projections of the RF modulation element, the control circuits and the RF choke on the substrate do not overlap each other.

First claim

What is claimed is:

1 . An electronic device, comprising:
a substrate; a radio frequency (RF) modulation element disposed on the substrate; a control circuit disposed on the substrate; and a radio frequency (RF) choke disposed on the substrate, and electrically coupled between the RF modulation element and the control circuit, wherein orthographic projections of the RF modulation element, the control circuit and the RF choke on the substrate do not overlap each other.

2 . The electronic device according to claim 1 , wherein the substrate comprises a metal layer and an opening penetrating the metal layer, wherein the orthographic projection of the RF modulation element on the substrate overlaps the opening, and the orthographic projections of the control circuit and the RF choke on the substrate overlap the metal layer.

3 . The electronic device according to claim 2 , further comprising:
a reflective structural layer, wherein the metal layer and the reflective structural layer are respectively located on opposite side surfaces of the substrate.

4 . The electronic device according to claim 2 , wherein a first part and a second part of the metal layer are opposite to each other and are in an E-shaped pattern in mirror disposition, and a third part of the metal layer is disposed between the first part and the second part.

5 . The electronic device according to claim 2 , wherein a first part and a second part of the metal layer are opposite to each other and are in a trapezoidal pattern in mirror disposition, and a third part of the metal layer is disposed between the first part and the second part.

6 . The electronic device according to claim 2 , wherein a first part of the metal layer surrounds a second part of the metal layer, and the first part and the second part are spaced apart.

7 . The electronic device according to claim 2 , wherein a material of the metal layer comprises copper, aluminum, silver, gold, indium tin oxide (ITO), metal alloys, or a combination of the above materials.

8 . The electronic device according to claim 1 , wherein the substrate comprises a signal trace, wherein the signal trace is connected between the RF modulation element and the RF choke and connected between the RF choke and the control circuit.

9 . The electronic device according to claim 8 , further comprising:
a bypass capacitor electrically coupled between the control circuit and the RF choke.

10 . The electronic device according to claim 9 , wherein the bypass capacitor, the RF choke and the signal trace are integrated together.

11 . The electronic device according to claim 9 , wherein the bypass capacitor and the signal trace are integrated together.

12 . The electronic device according to claim 11 , wherein the RF choke is connected to the signal trace through a surface-mount technology.

13 . The electronic device according to claim 8 , wherein a source and a drain of the control circuit and the signal trace belong to a same film layer.

14 . The electronic device according to claim 1 , wherein a distance between the RF modulation element and the substrate is slightly higher than a distance between the control circuit and the substrate.

15 . The electronic device according to claim 1 , wherein the RF modulation element is connected to a conductive pattern of the substrate through a solder.

16 . The electronic device according to claim 1 , wherein the RF modulation element comprises a varactor.

17 . The electronic device according to claim 1 , wherein the control circuit comprises a transistor or an integrated circuit.

18 . The electronic device according to claim 1 , wherein a material of the substrate comprises glass, quartz, silicon wafer, sapphire, a Group III-V semiconductor material, ceramic, polycarbonate (PC), polyimide (PI), polyethylene terephthalate (PET), or a combination of the foregoing.

19 . The electronic device according to claim 1 , wherein the substrate comprises a printed circuit board.

20 . The electronic device according to claim 1 , wherein the electronic device is a diode-tuned RF signal modulation array.

Assignees

• Innolux Corp

Inventors

• Wu Yan-Zheng

Classifications

• H05K1/0243

  Printed circuits associated with mounted high frequency components · CPC title

• H05K1/165

  incorporating printed inductors · CPC title

• H03J3/185 Primary

  with varactors, i.e. voltage variable reactive diodes · CPC title

• H03J2200/36

  Circuit arrangements for, e.g. increasing the tuning range, linearizing the voltage-capacitance relationship, lowering noise, constant slope in different bands · CPC title

• H05K1/0242

  Structural details of individual signal conductors, e.g. related to the skin effect · CPC title