IP Library Granted Patent US 11,002,416
Granted Patent B2
US 11,002,416 · App. 16/292,675 · Granted May 11, 2021

Information handling system including light-emitting diode lighting feature

Inventor: Priyank Jatin Gajiwala (Austin, TX)
Assignee: Dell Products L.P.
F21S4/24F21V7/0008F21V21/005G02B5/0278G06F1/1656F21S4/22F21V33/0052F21Y2107/10F21Y2107/70F21Y2115/10G06F11/325H04M1/22
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Quick Facts
Patent No.
US 11,002,416
App. No.
16/292,675
Granted
May 11, 2021
Kind
B2
Abstract

An information handling system includes an outer housing containing a processor configured to execute instructions to process information and a memory configured to store the information. The information handling system includes a plurality of light-emitting diodes (LEDs) and corresponding electrical conductors disposed along a length of the membrane. The information handling system includes a diffuser configured to diffuse light emitted by the plurality of LEDs to provide light having uniform intensity over a contiguous path along the outer housing.

Claims (64)

1. An information handling system comprising:

an outer housing;

a processor disposed in the outer housing, the processor being configured to execute instructions to process information;

a memory disposed in the outer housing, the memory being configured to store the information;

a membrane including a plurality of light-emitting diodes (LEDs) and corresponding electrical conductors disposed along a length of the membrane; and

a diffuser configured to diffuse light emitted by the plurality of LEDs to provide light having uniform intensity over a contiguous path along the outer housing,

wherein the membrane is disposed in a band-like structure attached to a surface of a niche in the outer housing and disposed to maintain a distance D between the LEDs and an outer surface of the diffuser, where distance D is greater than or equal to pitch P of the LEDs.

2. The information handling system, as recited in claim 1 , wherein the contiguous path includes at least one bend having a bend radius r b , where 10 mm>r b ≥5 mm.

3. The information handling system, as recited in claim 1 , further comprising:

an outer cover, a portion of the diffuser being disposed between the outer housing and the outer cover.

4. The information handling system, as recited in claim 1 , wherein the diffuser comprises:

a molded diffuser; and

an airgap disposed between the membrane, the outer housing, and the molded diffuser,

wherein the membrane is mounted in the niche of the outer housing and oriented to emit light into the airgap,

wherein the airgap has a dimension between the membrane and the molded diffuser that is greater than or equal to a pitch of the plurality of LEDs along the length of the membrane.

5. The information handling system, as recited in claim 1 , wherein the diffuser comprises:

a molded diffuser; and

an airgap disposed between the membrane, the outer housing, and the molded diffuser,

wherein the membrane is mounted on an inner surface of the outer housing, the membrane being oriented to cause the LEDs to emit light through an aperture through the outer housing.

6. The information handling system, as recited in claim 5 , wherein the inner surface is curved and the membrane is curled in conformance to the inner surface.

7. The information handling system, as recited in claim 1 , wherein the diffuser comprises:

an outer molded plastic insert;

a diffuser film attached to the outer molded plastic insert; and

an airgap disposed between the membrane and the diffuser film.

8. The information handling system, as recited in claim 1 , wherein the diffuser comprises:

an outer molded plastic insert;

a curved light guide with reflective properties; and

a diffusive film conforming to the curved light guide.

9. The information handling system, as recited in claim 1 , further comprising:

a first reflector, the membrane being attached to a first surface of the diffuser between the diffuser and the first reflector; and

a second reflector attached to a second surface of the diffuser, the second surface opposing the first surface,

wherein the diffuser is disposed between two surfaces of the niche in the outer housing.

10. The information handling system, as recited in claim 1 , wherein the outer housing includes the niche in the outer housing along the contiguous path, the diffuser and the membrane banding a protrusion in the surface bounded by walls of the niche.

11. The information handling system, as recited in claim 1 , further comprising:

a 4-pin RGB connector electrically coupling the processor to the plurality of LEDs via the corresponding electrical conductors.

12. The information handling system, as recited in claim 1 , wherein the membrane is flexible and has a minimum bend radius that is less than 10 millimeters.

13. The information handling system, as recited in claim 1 , wherein the membrane is transparent and is included in a stack of multiple membrane layers including N LEDs with pitch P, and the membrane has a ribbon-like shape narrower than a width sufficient to accommodate conductors for NLEDs disposed on the membrane with pitch P, where N is an integer greater than one and each membrane layer of the stack of multiple membrane layers includes fewer than NLEDs.

14. A method for manufacturing an information handling system, the method comprising:

attaching a membrane to a diffuser or an outer housing of the information handling system, the membrane including a plurality of light-emitting diodes (LEDs) and corresponding electrical conductors disposed along a length of the membrane and the diffuser being configured to diffuse light emitted by the plurality of LEDs to provide light having uniform intensity over a contiguous path along the outer housing; and

inserting the diffuser into a niche in the outer housing,

wherein the membrane is flexible and has a minimum bend radius that is less than 10 millimeters.

15. The method, as recited in claim 14 , wherein the contiguous path includes at least one bend having a bend radius r b , where 10 mm>r b ≥5 mm.

16. The method, as recited in claim 14 , wherein the membrane is attached to the outer housing, the method further comprising:

mounting the membrane in the niche of the outer housing, the membrane being oriented to emit light into an airgap between the membrane, the outer housing, and the diffuser,

wherein the airgap has a dimension between the LEDs and the diffuser that is greater than or equal to a pitch of the plurality of LEDs along the length of the membrane.

17. The method, as recited in claim 14 , wherein the membrane is attached to the outer housing, the method further comprising:

mounting the membrane on an inner surface of the outer housing, the membrane being oriented to cause the LEDs to emit light through an aperture through the outer housing, and into an airgap formed by the outer housing and the diffuser.

18. The method, as recited in claim 14 , further comprising:

attaching a diffuser film to an outer molded plastic insert; and

inserting the diffuser film and the outer molded plastic insert into the niche in the outer housing thereby forming an airgap between the membrane and the diffuser film.

19. The method, as recited in claim 14 , further comprising:

attaching a diffusive film to a curved light guide with reflective properties.

20. The method, as recited in claim 14 , further comprising:

attaching the membrane to a first surface of the diffuser between the diffuser and a first reflector; and

attaching a second reflector to a second surface of the diffuser, the second surface opposing the first surface,

wherein the diffuser is disposed between two surfaces of the niche in the outer housing.

21. The method, as recited in claim 14 , further comprising:

inserting an outer cover into the niche in the outer housing, a portion of the diffuser being disposed between the outer housing and the outer cover.

22. An apparatus comprising:

an outer housing;

a membrane including a plurality of light-emitting diodes (LEDs) and corresponding electrical conductors disposed along a length of the membrane; and

a diffuser configured to diffuse light emitted by the plurality of LEDs to provide light having uniform intensity over a contiguous path along the outer housing,

wherein the membrane is flexible and has a minimum bend radius that is less than 10 millimeters.

23. The apparatus, as recited in claim 22 , wherein the membrane is disposed in a band-like structure attached to a surface of a niche in the outer housing and disposed to maintain a distance D between the LEDs and an outer surface of the diffuser, where distance D is greater than or equal to pitch P of the LEDs.

Assignments (11)
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (052216/0758) Recorded Jun 23, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL PRODUCTS L.P.; EMC IP HOLDING COMPANY LLC
Reel/Frame 060438/0680 →
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (053546/0001) Recorded Jun 23, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL MARKETING L.P. (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO CREDANT TECHNOLOGIES, INC.); DELL INTERNATIONAL L.L.C.; DELL PRODUCTS L.P.; DELL USA L.P.; EMC CORPORATION; DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO FORCE10 NETWORKS, INC. AND WYSE TECHNOLOGY L.L.C.); EMC IP HOLDING COMPANY LLC
Reel/Frame 071642/0001 →
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (050724/0466) Recorded Jun 23, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL PRODUCTS L.P.; EMC CORPORATION; EMC IP HOLDING COMPANY LLC; DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO WYSE TECHNOLOGY L.L.C.)
Reel/Frame 060753/0486 →
RELEASE OF SECURITY INTEREST AT REEL 050405 FRAME 0534 Recorded Nov 2, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
To: DELL PRODUCTS L.P.; EMC CORPORATION; EMC IP HOLDING COMPANY LLC; WYSE TECHNOLOGY L.L.C.
Reel/Frame 058001/0001 →
RELEASE OF SECURITY INTEREST AF REEL 052243 FRAME 0773 Recorded Nov 2, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
To: DELL PRODUCTS L.P.; EMC IP HOLDING COMPANY LLC
Reel/Frame 058001/0152 →
SECURITY AGREEMENT Recorded Apr 22, 2020
From: CREDANT TECHNOLOGIES INC.; DELL INTERNATIONAL L.L.C.; DELL MARKETING L.P.; DELL PRODUCTS L.P.; DELL USA L.P.; EMC CORPORATION; FORCE10 NETWORKS, INC.; WYSE TECHNOLOGY L.L.C.; EMC IP HOLDING COMPANY LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 053546/0001 →
SECURITY AGREEMENT Recorded Mar 26, 2020
From: DELL PRODUCTS L.P.; EMC IP HOLDING COMPANY LLC
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
Reel/Frame 052243/0773 →
PATENT SECURITY AGREEMENT (NOTES) Recorded Mar 24, 2020
From: DELL PRODUCTS L.P.; EMC IP HOLDING COMPANY LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS COLLATERAL AGENT
Reel/Frame 052216/0758 →
PATENT SECURITY AGREEMENT (NOTES) Recorded Oct 15, 2019
From: DELL PRODUCTS L.P.; EMC CORPORATION; EMC IP HOLDING COMPANY LLC; WYSE TECHNOLOGY L.L.C.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS COLLATERAL AGENT
Reel/Frame 050724/0466 →
SECURITY AGREEMENT Recorded Sep 17, 2019
From: DELL PRODUCTS L.P.; EMC CORPORATION; EMC IP HOLDING COMPANY LLC; WYSE TECHNOLOGY L.L.C.
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
Reel/Frame 050405/0534 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 5, 2019
From: GAJIWALA, PRIYANK JATIN
To: DELL PRODUCTS L.P.
Reel/Frame 048504/0642 →