Electronic device

Patent metadata

Field	Value
Publication number	US-11330715-B2
Application number	US-202016858677-A
Country	US
Kind code	B2
Filing date	Apr 26, 2020
Priority date	Feb 21, 2020
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

An electronic device includes a motherboard, a bridging device, and an add-in card. The motherboard includes a processor, a first circuit board, and a first connector. The processor is coupled to the first connector through the first circuit board. The bridging device includes a second circuit board and a second connector and is disposed on the motherboard and coupled to the first connector. The second connector is coupled to the first connector through the second circuit board. The add-in card includes a third circuit board and a peripheral circuit and is disposed on the bridging device and coupled to the second connector. The peripheral circuit is coupled to the second connector through the third circuit board. The processor is coupled to the peripheral circuit through a signal path including the first circuit board, the first connector, the second circuit board, the second connector, and the third circuit board.

First claim

What is claimed is:

1. An electronic device, comprising:
a motherboard, comprising a processor, a first circuit board, and a first connector, wherein the processor is coupled to the first connector through the first circuit board;
a bridging device, comprising a second circuit board and a second connector, disposed on the motherboard, and coupled to the first connector of the motherboard, wherein the second connector is coupled to the first connector through the second circuit board; and
an add-in card, comprising a third circuit board and a peripheral circuit, disposed on the bridging device, and coupled to the second connector of the bridging device, wherein the peripheral circuit is coupled to the second connector through the third circuit board,
wherein the processor is coupled to the peripheral circuit through a signal path, and the signal path comprises the first circuit board, the first connector, the second circuit board, the second connector, and the third circuit board,
wherein in a set bandwidth, an insertion loss per unit length of the second circuit board is less than an insertion loss per unit length of the first circuit board.

2. The electronic device according to claim 1 , wherein the first connector is a board to board and mezzanine connector.

3. The electronic device according to claim 1 , wherein the first circuit board is a rigid printed circuit board, the second circuit board is a rigid printed circuit board, the second circuit board is disposed on and in parallel to the first circuit board, and the third circuit board is vertically disposed on the second circuit board.

4. The electronic device according to claim 1 , wherein the set bandwidth is a set bandwidth complying with Peripheral Component Interconnect-Express Generation 5.

5. An electronic device, comprising
a motherboard, comprising a processor, a first circuit board, and a first connector, wherein the processor is coupled to the first connector through the first circuit board;
a bridging device, comprising a second circuit board and a second connector, disposed on the motherboard, and coupled to the first connector of the motherboard, wherein the second connector is coupled to the first connector through the second circuit board;
a riser card, comprising a third circuit board and a third connector, disposed on the bridging device, and coupled to the second connector of the bridging device, wherein the third connector is coupled to the second connector through the third circuit board; and
an add-in card, comprising a fourth circuit board and a peripheral circuit, disposed on a side edge of the riser card, and coupled to the third connector of the riser card, wherein the peripheral circuit is coupled to the third connector through the fourth circuit board,
wherein the processor is coupled to the peripheral circuit through a signal path, and the signal path comprises the first circuit board, the first connector, the second circuit board, the second connector, the third circuit board, the third connector, and the fourth circuit board,
wherein in a set bandwidth, an insertion loss per unit length of the second circuit board is less than an insertion loss per unit length of the first circuit board.

6. The electronic device according to claim 5 , wherein the first connector is a board to board and mezzanine connector, the second connector is a small pitch connector, and the third connector is a Peripheral Component Interconnect-Express slot connector.

7. The electronic device according to claim 5 , wherein the first circuit board is a rigid printed circuit board, the second circuit board is a rigid printed circuit board, the third circuit board is a rigid printed circuit board, the second circuit board is disposed on and in parallel to the first circuit board, the third circuit board is disposed on and in parallel to the second circuit board, and the fourth circuit board is vertically disposed on the third circuit board.

8. The electronic device according to claim 5 , wherein the set bandwidth is a set bandwidth complying with a Peripheral Component Interconnect-Express Generation 5 standard.

Assignees

• Wiwynn Corp

Inventors

• Wei Tzu-Yu
• Chen Yi-Tang
• Chen Yi-Shian
• Hung Chi-Hsiang
• Chen Kuan-Wei

Classifications

• H05K1/141 Primary

  One or more single auxiliary printed circuits mounted on a main printed circuit, e.g. modules, adapters (H05K1/142 and H05K1/147 take precedence) · CPC title

• G06F1/1658

  related to the mounting of internal components, e.g. disc drive or any other functional module · CPC title

• G06F1/1632 Primary

  External expansion units, e.g. docking stations · CPC title

• G06F1/184

  Mounting of motherboards · CPC title

• H05K3/368

  parallel to each other (H05K3/361 takes precedence) · CPC title