Flexible printed circuit board structure

• US 10,104,778 B2
• Filed: 02/21/2017
• Issued: 10/16/2018
• Est. Priority Date: 11/21/2016
• Status: Active Grant

• Current Assignee: Uniflex Technology Inc.
• Original Assignee: Uniflex Technology Inc.
• Inventors: Liu, Yi-Chun, Hung, Pei-Hao, Hsu, Wen-Chien, Chia, Meng-Huan, Tsai, Min-Ming, Tseng, Shan-Yi, Lee, Yuan-Chih
• Primary Examiner(s): Aychillhum, Andargie M
• Application Number:
  US15/438,634
• Publication Number:
  US 20180146552A1
• Time in Patent Office: 602 Days
• Field of Search: 361749, 361748
• CPC Class Codes: H05K 1/028 Bending or folding regions of flexible printed circuits H05K1/0283 takes precedence
• CPC Class Codes: H05K 1/189 characterised by the use of a flexible or folded printed circuit H05K3/326 takes precedence
• CPC Class Codes: H05K 2201/10106 Light emitting diode [LED]
• CPC Class Codes: H05K 2201/10151 Sensor

Abstract

A flexible printed circuit board structure includes a spiral flexible printed circuit board and a protection cover capable of providing functions of extensibility and retractility. The spiral flexible printed circuit board includes a flexible substrate curling up spirally, a patterned circuit layer and a plurality of electrical contacts. The patterned circuit layer is disposed on the flexible substrate. The electrical contacts are disposed on an end of the flexible substrate and electrically connected to the patterned circuit layer. The protection cover at least covers a part of the spiral flexible printed circuit board.

Claims

1. A flexible printed circuit board structure, comprising:

a spiral flexible printed circuit board, comprising a flexible substrate curling up spirally, a patterned circuit layer and a plurality of electrical contacts, wherein the patterned circuit layer is disposed on the flexible substrate, the electrical contacts is disposed on an end of the flexible substrate and electrically connected to the patterned circuit layer;

a sensing component, mounted on the flexible substrate and electrically connected to the patterned circuit layer; and

a protection cover, at least covers a part of the spiral flexible printed circuit board, wherein the protection cover comprises a protection sleeve, which is sleeved on the spiral flexible printed circuit board, and the spiral flexible printed circuit board curls up spirally in the protection sleeve.

2. The flexible printed circuit board structure as claimed in claim 1, wherein the protection sleeve is a flexible protection sleeve with characteristics of extensibility and retractility.

3. The flexible printed circuit board structure as claimed in claim 1, wherein the protection sleeve is a non-flexible protection sleeve.

4. The flexible printed circuit board structure as claimed in claim 1, further comprising a plurality of light emitting components disposed on the flexible substrate and electrically connected to the patterned circuit layer.

5. The flexible printed circuit board structure as claimed in claim 4, wherein the protection sleeve is a transparent protection sleeve.

6. The flexible printed circuit board structure as claimed in claim 1, wherein the protection cover exposes the electrical contacts.