Support structures for a flexible electronic component

• US 10,834,822 B2
• Filed: 10/26/2017
• Issued: 11/10/2020
• Est. Priority Date: 12/24/2013
• Status: Active Grant

• Current Assignee: Flexterra, Inc.
• Original Assignee: Flexterra, Inc.
• Inventors: Huitema, Hjalmar Edzer Ayco, Inagaki, Philippe, Mok, Kwok Wah, Hamers, Johannes Cornelis Adriaan
• Primary Examiner(s): Wu, Jerry
• Application Number:
  US15/794,242
• Publication Number:
  US 20180054897A1
• Time in Patent Office: 1,111 Days
• CPC Class Codes: A44C 27/008 having shape memory behavior
• CPC Class Codes: A44C 5/0015 providing information, e.g. bracelets with calendars identification bracelets G09F3/005
• CPC Class Codes: A44C 5/0084 Bracelets in the form of a ring, band or tube of rigid material C-spring-type bracelets A44C5/12
• CPC Class Codes: G06F 1/163 Wearable computers, e.g. on a belt
• CPC Class Codes: G06F 1/1652 the display being flexible, e.g. mimicking a sheet of paper, or rollable
• CPC Class Codes: G09F 21/02 by a carrier person or animal
• CPC Class Codes: G09F 9/301 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
• CPC Class Codes: H05K 1/0281 Reinforcement details thereof
• CPC Class Codes: H05K 1/183 Components mounted in and supported by recessed areas of the printed circuit board
• 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 2201/051 Rolled
• CPC Class Codes: H05K 5/0017 with operator interface units
• CPC Class Codes: H05K 5/0086 portable, e.g. battery operated apparatus casings for switching devices H01H9/02
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

A dynamically flexible article or device, such as a wristband, an armband, a rollable e-reader, or a belt, includes a flexible electronic component (e.g., a flexible display) and a support structure coupled to the flexible electronic component. The support structure is configured to limit bending of the flexible electronic component to a range within a bending tolerance of the flexible electronic component.

Claims

1. An article, comprising:

a flexible electronic component movable between a substantially flat position and a curved position; and

a support structure coupled to the flexible electronic component, the support structure comprising a first substrate and a second substrate movably connected to the first substrate, a plurality of slots being formed in the first substrate and a plurality of projections being formed on the second substrate and movably disposed within a corresponding one of the plurality of slots, the plurality of slots configured to limit bending of the article and configured to limit torsion applied to the article to a range within a torsion tolerance of the flexible electronic component, wherein a bottom side of the first substrate at least partially vertically overlies a top side of the second substrate when the flexible electronic component is in the substantially flat position, wherein the flexible electronic component at least partially vertically overlies both the bottom side of the first substrate and the top side of the second substrate when the flexible electronic component is in the substantially flat position, wherein the first substrate has a first length extending horizontally when the flexible electronic component is in the substantially flat position, wherein the second substrate has a second length extending horizontally along the first length when the flexible electronic component is in the substantially flat position, and wherein the first substrate has a first thickness extending vertically when the flexible electronic component is in the substantially flat position and the second substrate has a second thickness extending vertically when the flexible electronic component is in the substantially flat position, the first thickness being less than the first length and the second thickness being less than the second length.

2. The article of claim 1, wherein the plurality of slots comprises a first subset of slots and a second subset of slots formed across from the first subset, each of the first subset of slots having a different length, and each of the second subset of slots having a different length, and wherein the plurality of projections comprises a first subset of projections and a second subset of projections formed across from the first subset, each of the first subset of projections having a different length, and each of the second subset of projections having a different length, the lengths defined such that the article has a desired shape.

3. The article of claim 1, wherein the plurality of slots are formed proximate to or in a perimeter edge of the first substrate, and wherein the plurality of projections are formed proximate to or in a perimeter edge of the second substrate.

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 each slot defines a first stop surface and a second stop surface opposite the first stop surface, each first stop surface arranged to limit bending of the flexible electronic component when the article is in a first stable position, and each second stop surface arranged to limit bending of the flexible electronic component when the article is in a second stable position.

6. The article of claim 1, wherein the plurality of slots are formed between the bottom side of the first substrate and a top side of the first substrate opposite the bottom side of the first substrate.

7. The article of claim 1, wherein the plurality of projections extend outward, away from the top side of the second substrate.

8. The article of claim 7, wherein the plurality of slots are formed between the bottom side of the first substrate and a top side of the first substrate opposite the bottom side of the first substrate.

9. The article of claim 1, wherein the bottom side of the first substrate substantially overlies the top side of the second substrate when the flexible electronic component is in the substantially flat position.

10. An article, comprising:

a flexible electronic component movable between a substantially flat position and a curved position; and

a support structure coupled to the flexible electronic component, the support structure comprising a first substrate and a second substrate movably connected to the first substrate, a plurality of slots being formed in the first substrate and a plurality of projections being formed on the second substrate and movably disposed within a corresponding one of the plurality of slots, the plurality of slots configured to limit bending of the article and configured to limit torsion applied to the article to a range within a torsion tolerance of the flexible electronic component, wherein a bottom side of the first substrate at least partially vertically overlies a top side of the second substrate when the flexible electronic component is in the substantially flat position, wherein the flexible electronic component at least partially vertically overlies both the bottom side of the first substrate and the top side of the second substrate when the flexible electronic component is in the substantially flat position, wherein when the flexible electronic component is in the substantially flat position, the flexible electronic component is substantially parallel to both the first substrate and the second substrate, wherein the first substrate has a first length extending horizontally when the flexible electronic component is in the substantially flat position, wherein the second substrate has a second length extending horizontally along the first length when the flexible electronic component is in the substantially flat position, and wherein the first substrate has a first thickness extending vertically when the flexible electronic component is in the substantially flat position and the second substrate has a second thickness extending vertically when the flexible electronic component is in the substantially flat position, the first thickness being less than the first length and the second thickness being less than the second length.

11. The article of claim 10, wherein the plurality of slots comprises a first subset of slots and a second subset of slots formed across from the first subset, each of the first subset of slots having a different length, and each of the second subset of slots having a different length, and wherein the plurality of projections comprises a first subset of projections and a second subset of projections formed across from the first subset, each of the first subset of projections having a different length, and each of the second subset of projections having a different length, the lengths defined such that the article has a desired shape.

12. The article of claim 10, wherein the plurality of slots are formed proximate to or in a perimeter edge of the first substrate, and wherein the plurality of projections are formed proximate to or in a perimeter edge of the second substrate.

13. The article of claim 10, wherein a portion of the first substrate is locally fixedly attached to a portion of the second substrate at a fixation point.

14. The article of claim 10, wherein each slot defines a first stop surface and a second stop surface opposite the first stop surface, each first stop surface arranged to limit bending of the flexible electronic component when the article is in a first stable position, and each second stop surface arranged to limit bending of the flexible electronic component when the article is in a second stable position.

15. The article of claim 10, wherein the plurality of projections extend outward, away from the top side of the second substrate.

16. The article of claim 15, wherein the plurality of slots are formed between the bottom side of the first substrate and a top side of the first substrate opposite the bottom side of the first substrate.

17. The article of claim 10, wherein the bottom side of the first substrate substantially overlies the top side of the second substrate.

18. An article, comprising:

a flexible display movable between a substantially flat position and a curved position; and

a support structure coupled to the flexible display, the support structure comprising a first substrate and a second substrate movably connected to the first substrate, a plurality of slots being formed in the first substrate and a plurality of projections being formed on the second substrate and movably disposed within a corresponding one of the plurality of slots, the plurality of slots configured to limit bending of the article and configured to limit torsion applied to the article to a range within a torsion tolerance of the flexible display,

wherein a bottom side of the first substrate at least partially vertically overlies a top side of the second substrate when the flexible display is in the substantially flat position,

wherein the flexible display at least partially vertically overlies both the bottom side of the first substrate and the top side of the second substrate when the flexible display is in the substantially flat position,

wherein when the flexible display is in the substantially flat position, the flexible display is substantially parallel to both the first substrate and the second substrate,

wherein the first substrate has a first length extending horizontally when the flexible display is in the substantially flat position, and wherein the second substrate has a second length extending horizontally when the flexible display is in the substantially flat position,

wherein the first substrate has a first thickness extending vertically when the flexible display is in the substantially flat position and the second substrate has a second thickness extending vertically when the flexible display is in the substantially flat position, the first thickness being less than the first length and the second thickness being less than the second length, and

wherein the first substrate has a first length and the second substrate has a second length that is substantially equal to the first length.