Support structures for an attachable, two-dimensional flexible electronic device

• US 9,560,751 B2
• Filed: 09/10/2015
• Issued: 01/31/2017
• Est. Priority Date: 12/24/2013
• Status: Active Grant

• Current Assignee: Flexterra, Inc.
• Original Assignee: Polyera Corporation
• Inventors: Huitema, Hjalmar Edzer Ayco, Inagaki, Philippe
• Primary Examiner(s): Tran, Binh
• Application Number:
  US14/850,327
• Publication Number:
  US 20160037625A1
• Time in Patent Office: 509 Days
• Field of Search: 361/679.21, 361/679.27, 361/749, 361/784, 361/785, 361/790, 361/791, 361/801, 361/802, 361/803
• US Class Current: 1/1
• CPC Class Codes: G09F 21/02 by a carrier person or animal
• CPC Class Codes: G09F 21/026 Advertising carried by a person, e.g. carried on the shoulders
• CPC Class Codes: G09F 9/301 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
• CPC Class Codes: H01R 12/00 Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures printed connections to, or between, printed circuits H05K1/11
• CPC Class Codes: H05K 1/028 Bending or folding regions of flexible printed circuits H05K1/0283 takes precedence
• CPC Class Codes: H05K 1/0281 Reinforcement details thereof
• CPC Class Codes: H05K 1/14 Structural association of two or more printed circuits providing electric connection to or between printed circuits H05K1/11, H01R12/00
• CPC Class Codes: H05K 1/142 Arrangements of planar printed circuit boards in the same plane, e.g. auxiliary printed circuit insert mounted in a main printed circuit
• 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 2201/029 Woven fibrous reinforcement or textile textile substrates H05K1/038
• CPC Class Codes: H05K 2201/041 Stacked PCBs, i.e. having neither an empty space nor mounted components in between
• CPC Class Codes: H05K 2201/042 Stacked spaced PCBs; Planar parts of folded flexible circuits having mounted components in between or spaced from each other
• CPC Class Codes: H05K 2203/167 Using mechanical means for positioning, alignment or registration, e.g. using rod-in-hole alignment
• CPC Class Codes: H05K 5/0017 with operator interface units
• CPC Class Codes: H05K 5/0217 Mechanical details of casings covers, lids, hoods or members for covering apertures H05K5/03
• CPC Class Codes: H05K 5/0291 for multiple cards

Abstract

A dynamically flexible article or device, such as an armband, includes a flexible electronic component, such as a flexible electronic display, and a flexible support structure coupled to the flexible electronic component, wherein the flexible support and the flexible electronic component are flexible along two dimensions to thereby be able to conform to a complex curved surface. The flexible support includes bending limiting structure that constrains bending of the flexible electronic component to prevent undesirable bending.

Claims

1. An article, comprising:

a flexible electronic component configured for bending along a first dimension and along a second dimension different from the first dimension; and

a flexible support coupled to the flexible electronic component, the flexible support including a bending limiting structure configured to constrain bending of the flexible electronic component along the first and second dimensions to a range within a bending tolerance of the flexible electronic component,

wherein the flexible electronic component, when laid in a substantially flat position, defines a two-dimensional area in a reference plane, and wherein the bending limiting structure of the flexible support is configured to constrain bending of the flexible electronic component such that when the flexible electronic component is simultaneously bent along a first bending axis in the first dimension and a second bending axis in the second dimension, a first projection of the first bending axis onto the reference plane and a second projection of the second bending axis onto the reference plane do not intersect at a point located within the two-dimensional area of the reference plane,

wherein the bending limiting structure comprises a first substrate and a second substrate movably coupled to the first substrate, a plurality of apertures formed in the first substrate, and a plurality of protrusions coupled to the second substrate and movably disposed within the plurality of apertures, respectively,

wherein each aperture of the plurality of apertures comprises a slot, each of the slots defining a plurality of stop surfaces arranged to constrain movement of a respective one of the protrusions movably disposed therein, and

wherein each slot is defined by two longitudinally extending portions and two transversely extending portions perpendicular to the longitudinally extending portions.

2. The article of claim 1, wherein the plurality of protrusions comprises a plurality of pins.

3. The article of claim 1, wherein one or more of the slots is further defined by four angled portions, each angled portion being disposed between one of the longitudinally extending portions and one of the transversely extending portions.

4. The article of claim 1, wherein a portion of the first substrate is locally fixedly attached to a portion of the second substrate at a fixation point.

5. The article of claim 1, wherein the flexible support comprises a plurality of defined bending regions.

6. The article of claim 5, wherein the flexible support comprises at least one rigid zone disposed between two or more of the defined bending regions.

7. The article of claim 5, wherein the defined bending regions are angled relative to one another.

8. An article, comprising:

a flexible electronic component configured for bending along a first dimension and along a second dimension different from the first dimension; and

a flexible support coupled to the flexible electronic component, the flexible support including a bending limiting structure configured to constrain bending of the flexible electronic component along the first and second dimensions to a range within a bending tolerance of the flexible electronic component,

wherein the flexible electronic component, when laid in a substantially flat position, defines a two-dimensional area in a reference plane, and wherein the bending limiting structure of the flexible support is configured to constrain bending of the flexible electronic component such that when the flexible electronic component is simultaneously bent along a first bending axis in the first dimension and a second bending axis in the second dimension, a first projection of the first bending axis onto the reference plane and a second projection of the second bending axis onto the reference plane do not intersect at a point located within the two-dimensional area of the reference plane,

wherein the bending limiting structure comprises a first substrate and a second substrate movably coupled to the first substrate, a plurality of apertures formed in the first substrate, and a plurality of protrusions coupled to the second substrate and movably disposed within the plurality of apertures, respectively,

wherein each aperture of the plurality of apertures comprises a slot, each of the slots defining a plurality of stop surfaces arranged to constrain movement of a respective one of the protrusions movably disposed therein, and

wherein one or more of the slots define four stop surfaces, the four stop surfaces including first and second stop surfaces arranged to constrain bending of the flexible electronic component in a transverse direction and third and fourth stop surfaces arranged to constrain bending of the flexible electronic component in a longitudinal direction.

9. The article of claim 8, wherein a portion of the first substrate is locally fixedly attached to a portion of the second substrate at a fixation point.

10. The article of claim 8, wherein the flexible support comprises a plurality of defined bending regions.

11. The article of claim 10, wherein the flexible support comprises at least one rigid zone disposed between two or more of the defined bending regions.

12. The article of claim 10, wherein the defined bending regions are angled relative to one another.

13. The article of claim 8, wherein the plurality of protrusions comprises a plurality of pins.

14. An article, comprising:

a flexible electronic component configured for bending along a first bending axis and a second bending axis different from the first bending axis;

a first substrate;

a second substrate movably coupled to the first substrate;

a plurality of slots formed in the first substrate; and

a plurality of protrusions coupled to the second substrate and movably disposed within a corresponding one of the plurality of slots, the plurality of slots defined to allow simultaneous bending of the flexible electronic component along the first bending axis and the second bending axis within a bending range,

wherein each slot is defined by two longitudinally extending portions and two transversely extending portions perpendicular to the longitudinally extending portions.

15. The article of claim 14, wherein one or more of the slots is further defined by four angled portions, each angled portion being disposed between one of the longitudinally extending portions and one of the transversely extending portions.

16. The article of claim 14, wherein a portion of the first substrate is locally fixedly attached to a portion of the second substrate at a fixation point.

17. An article, comprising:

a flexible electronic component configured for bending along a first bending axis and a second bending axis different from the first bending axis;

a first substrate;

a second substrate movably coupled to the first substrate;

a plurality of slots formed in the first substrate; and

a plurality of protrusions coupled to the second substrate and movably disposed within a corresponding one of the plurality of slots, the plurality of slots defined to allow simultaneous bending of the flexible electronic component along the first bending axis and the second bending axis within a bending range,

wherein one or more of the slots define four stop surfaces, the four stop surfaces including first and second stop surfaces arranged to constrain bending of the flexible electronic component in a transverse direction and third and fourth stop surfaces arranged to constrain bending of the flexible electronic component in a longitudinal direction.

18. The article of claim 17, wherein a portion of the first substrate is locally fixedly attached to a portion of the second substrate at a fixation point.