(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT)
`
`(19) World Intellectual Property Organization
`International Bureau
`
`(43) International Publication Date
`2 December 2010 (02.12.2010)
`
`(10) International Publication Number
`WO 2010/138211 Al
`
`(51) International Patent Classification:
`HOSB 37/00 (2006.01)
`
`(21) International Application Number:
`PCT/US2010/001597
`
`(22) International Filing Date:
`
`(25) Filing Language:
`
`(26) Publication Language:
`
`28 May 2010 (28.05.2010)
`
`English
`
`English
`
`(30) Priority Data:
`61/217,2 15
`
`28 May 2009 (28.05.2009)
`
`US
`
`(63) Related by continuation (CON) or continuation-in-part
`(CIP) to earlier application:
`US
`Filed on
`
`12/287,267 (CIP)
`6 October 2008 (06.10.2008)
`
`(71) Applicant (for all designated States except US): LYNK
`LABS, INC.
`[US/US]; 25 11 Technology Drive, Suite
`108, Elgin, IL 60123-9323 (US).
`
`(72) Inventors; and
`(75) Inventors/Applicants (for US only): MISKIN, Michael
`[US/US]; 2 Pinecone Lane, Sleepy Hollow,
`IL 601 18
`(US). KOTTRISCH, Robert, L . [GB/GB]; 10 The Hol
`lies, Shefford, Bedfordshire SGl 75BX (GB).
`
`(74) Agent: LAKE, Michael, D.; Factor & Lake, Ltd, 1327
`W . Washington Blvd., Suite 5G/H, Chicago,
`IL 60607
`(US).
`
`(81) Designated States (unless otherwise indicated, for every
`kind of national protection available): AE, AG, AL, AM,
`AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ,
`CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO,
`DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT,
`HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP,
`KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD,
`ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI,
`NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD,
`SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR,
`TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
`
`(84) Designated States (unless otherwise indicated, for eveiy
`kind of regional protection available): ARIPO (BW, GH,
`GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG,
`ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ,
`TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK,
`EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU,
`LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK,
`SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ,
`GW, ML, MR, NE, SN, TD, TG).
`
`Published:
`— with international search report (Art. 21(3))
`
`(54) Title: MULTI- VOLTAGE AND MULTI-BRIGHTNESS LED LIGHTING DEVICES AND METHODS OF USING SAME
`
`(57) Abstract: A single chip multi-voltage or
`multi-brightness LED lighting device having at
`least two LED circuits having at least two LEDs
`connected sep es, and electrically unconnected in
`a parallel relationship, a forward operating dp ve
`voltage of at least six volts and are monolithical-
`Iy integrated on a single substrate, configurable
`by means of connecting the circuits so as to pro
`vide optional operating voltage level and/or d e
`sired bnghtness level wherein the electrical con
`nection at the LED packaging level when the
`single chips are integrated into the LED package
`Alternatively,
`the LED package may have exter
`nal electrical contacts that match the integrated
`chips within Optionally allowable,
`the drive
`voltage level and/or the bnghtness level select-
`ability may be passed on through to the exterior
`of the LED package and may be selected by the
`LED package user, the PCB assembly facility, or
`the end product manufacturer.
`
`12/24 VAC SINGLE CHIP
`
`PGR2023-00016 - Home Depot
`Ex. 1018 - Page 1
`
`

`

`Multi-Voltage And Multi-Brightness LED Lighting Devices
`
`And Methods Of Using Same
`
`RELATED APPLICATIONS
`
`[Para 1]
`
`The application is a continuation-in-part of U.S. Patent Application No.
`
`12/287,267, filed October 6, 2008, which claims the priority to U.S. Provisional Application
`
`No. 60/997,771, filed October 6, 2007; this application also claims priority to U.S.
`
`Provisional Application No. 61/217,215, filed May 28, 2009; the contents of each of these
`
`applications are expressly incorporated herein by reference.
`
`TECHNICAL FIELD
`The present invention generally relates to light emitting diodes ("LEDs") for
`[Para 2]
`
`AC operation. The present invention specifically relates to multiple voltage level and
`
`multiple brightness level LED devices, packages and lamps.
`
`FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
`None.
`[Para 3]
`
`BACKGROUND OF THE INVENTION
`
`[Para 4]
`
`[Para 5]
`
`Field of the Invention
`
`The present invention generally relates to light emitting diodes ("LEDs") for
`
`multi-voltage level and/or multi-brightness level operation. The present invention
`
`specifically relates to multiple voltage level and multiple brightness level light emitting diode
`
`circuits, single chips, packages and lamps "devices" for direct AC voltage power source
`
`operation, bridge rectified AC voltage power source operation or constant DC voltage power
`
`source operation.
`
`[Para 6]
`
`Description of the Related Art
`
`LEDs are semiconductor devices that produce light when a current is supplied to them.
`LEDs are intrinsically DC devices that only pass current in one polarity and historically have
`
`been driven by DC voltage sources using resistors, current regulators and voltage regulators
`
`PGR2023-00016 - Home Depot
`Ex. 1018 - Page 2
`
`

`

`to limit the voltage and current delivered to the LED. Some LEDs have resistors built into
`
`the LED package providing a higher voltage LED typically driven with 5V DC or 12V DC.
`
`[Para 7 1
`
`With proper design considerations LEDs may be driven more efficiently with
`
`direct AC or rectified AC than with constant voltage or constant current DC drive schemes.
`
`[Para 8]
`
`Some standard AC voltage in the world include 12VAC, 24VAC, lOOVAC,
`
`1lOVAC, 120VAC, 220VAC, 230VAC, 240VAC and 277VAC. Therefore, it would be
`
`advantageous to have a single chip LED or multi-chip single LED packages that could be
`
`easily configured to operate at multiple voltages by simply selecting a voltage and/or current
`
`level when packaging the multi-voltage and/or multi-current single chip LEDs or by selecting
`
`a specific voltage and/or current level when integrating the LED package onto a printed
`
`circuit board or within a finished lighting product. It would also be advantageous to have
`
`multi-current LED chips and/or packages for LED lamp applications in order to provide a
`
`means of increasing brightness in LED lamps by switching in additional circuits just as
`
`additional filaments are switched in for standard incandescent lamps.
`
`[Para 9]
`
`US 7,525,248 discloses a c i>-scale LED lamp including discrete LEDs
`
`capable of being built upon electrically insulative, electrically conductive, or electrically semi
`
`conductive substrates. Further, the construction of the LED lamp enables the lamp to be
`
`configured for high voltage AC or DC power operation. The LED based solid-state light
`
`emitting device or lamp is built upon an electrically insulating layer that has been formed
`
`onto a support surface of a substrate. Specifically, the insulating layer may be epitaxially
`
`grown onto the substrate, followed by an LED buildup of an n-type semiconductor layer, an
`
`optically active layer, and a p-type semiconductor layer, in succession. Isolated mesa
`
`structure of individual, discrete LEDs is formed by etching specific portions of the LED
`
`buildup down to the insulating layer, thereby forming trenches between adjacent LEDs.
`
`Thereafter, the individual LEDs are electrically coupled together through conductive
`
`elements or traces being deposited for connecting the n-type layer of one LED and the p-type
`
`layer of an adjacent LED, continuing across all of the LEDs to form the solid-state light
`
`emitting device. The device may therefore be formed as an integrated AC/DC light emitter
`
`with a positive and negative lead for supplied electrical power. For instance, the LED lamp
`
`may be configured for powering by high voltage DC power (e.g., 12V, 24V, etc.) or high
`
`voltage AC power (e.g., 110/1 20V, 220/240V, etc.).
`
`[Para 10]
`
`US 7,213,942 discloses a single-cA LED device through the use of
`
`integrated circuit technology, which can be used for standard high AC voltage (110 volts for
`
`PGR2023-00016 - Home Depot
`Ex. 1018 - Page 3
`
`

`

`North America, and 220 volts for Europe, Asia, etc.) operation. The single-cL
`A C LED
`device integrates many smaller LEDs, which are connected in series. The integration is done
`during the LED fabrication process and the final product is a single-cL i / >device that can be
`plugged directly into house or building power outlets or directly screwed into incandescent
`
`lamp sockets that are powered by standard AC voltages. The series connected smaller LEDs
`
`are patterned by photolithography, etching (such as plasma dry etching), and metallization on
`
`a single chip. The electrical insulation between small LEDs within a single-c i
`
`is achieved
`
`by etching light emitting materials into the insulating substrate so that no light emitting
`
`material is present between small LEDs. The voltage crossing each one of the small LEDs is
`
`about the same as that in a conventional DC operating LED fabricated from the same type of
`
`material (e.g., about 3.5 volts for blue LEDs).
`
`[Para 11]
`
`Accordingly, single chip LEDs have been limited and have not been integrated
`
`circuits beyond being fixed series or fixed parallel circuit configurations until the
`
`development of AC LEDs. The AC LEDs have still however been single circuit, fixed single
`
`voltage designs.
`
`[Para 12]
`
`LED packages have historically not been integrated circuits beyond being
`
`fixed series or fixed parallel circuit configurations.
`
`[Para 13]
`
`The art is deficient in that it does not provide a multi-voltage and/or multi-
`
`current circuit monolithically integrated on a single substrate which would be advantageous.
`
`[Para 14]
`
`It would further be advantageous to have a multi-voltage and/or multi-
`
`brightness circuit that can provide options in voltage level, brightness level and/or AC or DC
`
`powering input power preference.
`
`[Para 15]
`
`It would further be advantageous to provide multiple voltage level and/or
`
`multiple brightness level light emitting LED circuits, chips, packages and lamps "multi-
`
`voltage and/or multi-brightness LED devices" that can easily be electrically configured for at
`
`least two forward voltage drive levels with direct AC voltage coupling, bridge rectified AC
`
`voltage coupling or constant voltage DC power source coupling. This invention comprises
`
`circuits and devices that can be driven with more than one AC or DC forward voltage "multi-
`
`voltage" at 6V or greater based on a selectable desired operating voltage level that is
`
`achieved by electrically connecting the LED circuits in a series or parallel circuit
`
`configuration and/or more than one level of brightness "multi-brightness" based on a
`
`switching means that connects and/or disconnects at least one additional LED circuit to
`
`and/or from a first LED circuit. The desired operating voltage level and/or the desired
`
`PGR2023-00016 - Home Depot
`Ex. 1018 - Page 4
`
`

`

`brightness level electrical connection may be achieved and/or completed at the LED
`
`packaging level when the multi-voltage and/or multi-brightness circuits and/or single chips
`
`are integrated into the LED package, or the LED package may have external electrical
`
`contacts that match the integrated multi-voltage and/or multi-brightness circuits and/or single
`chips within, thus allowing the drive voltage level aήd/or the brightness level select-ability to
`be passed on through to the exterior of the LED package and allowing the voltage level or
`
`brightness level to be selected at the LED package user, or the PCB assembly facility, or the
`
`end product manufacturer.
`
`[Para 16]
`
`It would further be advantageous to provide at least two integrated circuits
`
`having a forward voltage of at least 12VAC or 12VDC or greater on a single chip or within a
`
`single LED package that provide a means of selecting a forward voltage when packaging a
`
`multi-voltage and/or multi-brightness circuit using discrete die (one LED chip at a time) and
`
`wire bonding them into a circuit at the packaging level or when packaging one or more multi-
`
`voltage and/or multi-brightness level single chips within a LED package.
`
`[Para 17]
`
`It would further be advantageous to provide multi-voltage and/or multi-
`
`brightness level devices that can provide electrical connection options for either AC or DC
`
`voltage operation at preset forward voltage levels of 6V or greater.
`
`[Para 18]
`
`It would further be advantageous to provide multi-brightness LED devices that
`
`can be switched to different levels of brightness by simply switching additional circuits on or
`
`off in addition to a first operating circuit within a single chip and or LED package. This
`
`would allow LED lamps to switch to higher brightness levels just like 2-way or 3-way
`
`incandescent lamps do today.
`
`[Para 19]
`
`The benefits of providing multi-voltage circuits of 6V or greater on a single
`
`chip is that an LED packager can use this single chip as a platform to offer more than one
`
`LED packaged product with a single chip that addresses multiple voltage levels for various
`
`end customer design requirements. This also increase production on a single product for the
`
`chip maker and improves inventory control. This also improves buying power and inventory
`
`control for the LED packager when using one chip.
`
`[Para 20]
`
`The present invention provides for these advantages and solves the
`
`deficiencies in the art.
`
`PGR2023-00016 - Home Depot
`Ex. 1018 - Page 5
`
`

`

`SUMMARY OF THE INVENTION
`
`[Para 21]
`
`According to one aspect of the invention at least two single voltage AC LED
`
`circuits are formed on a single chip or on a substrate providing a multi-voltage AC LED
`
`device for direct AC power operation. Each single voltage AC LED circuit has at least two
`
`LEDs connected to each other in opposing parallel relation.
`
`[Para 22]
`
`According to another aspect of the invention, each single voltage AC LED
`
`circuit is designed to be driven with a predetermined forward voltage of at least 6VAC and
`
`preferably each single voltage AC LED circuit has a matching forward voltage of 6VAC,
`
`12VAC, 24VAC, 120VAC, or other AC voltage levels for each single voltage AC LED
`
`circuit.
`
`[Para 23]
`
`According to another aspect of the invention, each multi-voltage AC LED
`
`device would be able to be driven with at least two different AC forward voltages resulting in
`
`a first forward voltage drive level by electrically connecting the two single voltage AC LED
`
`circuits in parallel and a second forward voltage drive level by electrically connecting the at
`
`least two single voltage level AC LED circuits in series. By way of example, the second
`
`forward voltage drive level of the serially connected AC LED circuits would be
`
`approximately twice the level of the first forward voltage drive level of the parallel connected
`
`AC LED circuits. The at least two parallel connected AC LED circuits would be twice the
`i
`current of the at least two serially connected AC LED circuits. In either circuit configuration,
`
`the brightness would be approximately the same with either forward voltage drive selection
`
`of the multi-voltage LED device.
`
`[Para 24]
`
`According to another aspect of the invention, at least two single voltage series
`
`LED circuits, each of which have at least two serially connected LEDs, are formed on a
`
`single chip or on a substrate providing a multi-voltage AC or DC operable LED device.
`
`[Para 25]
`
`According to another aspect of the invention, each single voltage series LED
`
`circuit is designed to be driven with a predetermined forward voltage of at least 6V AC or
`
`DC and preferably each single voltage series LED circuit has a matching forward voltage of
`
`6V, 12V, 24V, 120V, or other AC or DC voltage levels. By way of example, each multi-
`
`voltage AC or DC LED device would be able to be driven with at least two different AC or
`
`DC forward voltages resulting in a first forward voltage drive level by electrically connecting
`
`the two single voltage series LED circuits in parallel and a second forward voltage drive level
`
`by electrically connecting the at least two single voltage level series LED circuits in series.
`
`PGR2023-00016 - Home Depot
`Ex. 1018 - Page 6
`
`

`

`The second forward voltage drive level of the serially connected series LED circuits would be
`
`approximately twice the level of the first forward voltage drive level of the parallel connected
`
`series LED circuits. The at least two parallel connected series LED circuits would be twice
`
`the current of the at least two serially connected series LED circuits. In either circuit
`
`configuration, the brightness would be approximately the same with either forward voltage
`
`drive selection of the multi-voltage series LED device.
`
`[Para 26]
`
`According to another aspect of the invention, at least two single voltage AC
`
`LED circuits are formed on a single chip or on a substrate providing a multi-voltage and/or
`
`multi-brightness AC LED device for direct AC power operation.
`
`[Para 27]
`
`According to another aspect of the invention, each single voltage AC LED
`
`circuit has at least two LEDs connected to each other in opposing parallel relation. Each
`
`single voltage AC LED circuit is designed to be driven with a predetermined forward voltage
`
`of at least 6VAC and preferably each single voltage AC LED circuit has a matching forward
`
`voltage of 6VAC, 12VAC, 24VAC, 120VAC, or other AC voltage levels for each single
`
`voltage AC LED circuit. The at least two AC LED circuits within each multi-voltage and/or
`
`multi current AC LED device would be left able to be driven with at least two different AC
`
`forward voltages resulting in a first forward voltage drive level by electrically connecting the
`
`two single voltage AC LED circuits in parallel and a second forward voltage drive level by
`
`electrically connecting the at least two single voltage level AC LED circuits in series. The
`
`second forward voltage drive level of the serially connected AC LED circuits would be
`
`approximately twice the level of the first forward voltage drive level of the parallel connected
`
`AC LED circuits. The at least two parallel connected AC LED circuits would be twice the
`
`current of the at least two serially connected AC LED circuits. In either circuit configuration,
`
`the brightness would be approximately the same with either forward voltage drive selection
`
`of the multi-voltage LED device.
`
`[Para 28]
`
`According to another aspect of the invention at least two single voltage LED
`
`circuits are formed on a single chip or on a substrate, and at least one bridge circuit made of
`
`LEDs is formed on the same single chip or substrate providing a multi-voltage and/or multi-
`
`brightness LED device for direct DC power operation. Each single voltage LED circuit has
`
`at least two LEDs connected to each other in series. Each single voltage LED circuit is
`
`designed to be driven with a predetermined forward voltage and preferably matching forward
`
`voltages for each circuit such as 12VDC, 24VDC, 120VDC, or other DC voltage levels for
`
`each single voltage LED circuit. Each multi-voltage and/or multi-brightness LED device
`
`PGR2023-00016 - Home Depot
`Ex. 1018 - Page 7
`
`

`

`would be able to be driven with at least two different DC forward voltages resulting in a first
`
`forward voltage drive level when the two single voltage LED circuits are connected in
`
`parallel and a second forward voltage drive level that is twice the level of the first forward
`
`voltage drive level when the at least two LED circuits are connected in series.
`
`[Para 29]
`
`According to another aspect of the invention at least two single voltage LED
`
`circuits are formed on a single chip or on a substrate providing a multi-voltage and/or multi-
`
`brightness LED device for direct DC power operation. Each single voltage LED circuit has
`
`at least two LEDs connected to each other in series. Each single voltage LED circuit is
`
`designed to be driven with a predetermined forward voltage and preferably matching forward
`
`voltages for each circuit such as 12VAC, 24VAC, 120VAC, or other DC voltage levels for
`
`each single voltage LED circuit. Each multi-voltage and/or multi-brightness LED device
`
`would be able to be driven with at least two different DC forward voltages resulting in a first
`
`forward voltage drive level when the two single voltage LED circuits are connected in
`
`parallel and a second forward voltage drive level that is twice the level of the first forward
`
`voltage drive level when the at least two LED circuits' are connected in series.
`
`[Para 30]
`
`According to another aspect of the invention at least two single voltage LED
`
`circuits are formed on a single chip or on a substrate, and at least one bridge circuit made of
`
`LEDs is formed on the same single chip or substrate providing a multi-voltage and/or multi-
`
`brightness LED device for direct DC power operation. Each single voltage LED circuit has
`
`at least two LEDs connected to each other in series. Each single voltage LED circuit is
`
`designed to be driven with a predetermined forward voltage and preferably matching forward
`
`voltages for each circuit such as 12VDC, 24VDC, 120VDC, or other DC voltage levels for
`
`each single voltage LED circuit. Each multi-voltage and/or multi-brightness LED device
`
`would be able to be driven with at least two different DC forward voltages resulting in a first
`
`forward voltage drive level when the two single voltage LED circuits are connected in
`
`parallel and a second forward voltage drive level that is twice the level of the first forward
`
`voltage drive level when the at least two LED circuits are connected in series.
`
`[Para 31]
`
`According to another aspect of the invention a multi-voltage and/or multi-
`
`current AC LED circuit is integrated within a single chip LED. Each multi-voltage and/or
`
`multi-current single chip AC LED LED comprises at least two single voltage AC LED
`
`circuits. Each single voltage AC LED circuit has at least two LEDs in anti-parallel
`
`configuration to accommodate direct AC voltage operation. Each single voltage AC LED
`
`circuit may have may have at least one voltage input electrical contact at each opposing end
`
`PGR2023-00016 - Home Depot
`Ex. 1018 - Page 8
`
`

`

`of the circuit or the at least two single voltage AC LED circuits may be electrically connected
`
`together in series on the single chip and have at least one voltage input electrical contact at
`
`each opposing end of the two series connected single voltage AC LED circuits and one
`
`voltage input electrical contact at the center junction of the at least two single voltage AC
`
`LED circuits connected in series. The at least two single voltage AC LED circuits are
`
`integrated within a single chip to form a multi-voltage and/or multi-current single chip AC
`
`LED.
`
`[Para 32]
`
`According to another aspect of the invention, at least one multi-voltage and/or
`
`multi-brightness LED devices may be integrated within a LED lamp. The at least two
`
`individual LED circuits within the multi-voltage and/or multi-brightness LED device(s) may
`
`be wired in a series or parallel circuit configuration by the LED packager during the LED
`
`packaging process thus providing for at least two forward voltage drive options, for example
`
`12VAC and 24VAC or 120VAC and 240VAC that can be selected by the LED packager.
`
`[Para 33]
`
`According to another aspect of the invention a multi-voltage and/or multi-
`
`current AC LED package is provided, comprising at least one multi-voltage and/or multi-
`
`current single chip AC LED integrated within a LED package. The multi-voltage and/or
`
`multi-current AC LED package provides matching electrical connectivity pads on the exterior
`
`of the LED package to the electrical connectivity pads of the at least one multi-voltage and/or
`
`multi-current single chip AC LED integrated within the LED package thus allowing the LED
`
`package user to wire the multi-voltage and/or multi-current AC LED package into a series or
`
`parallel circuit configuration during the PCB assembly process or final product integration
`
`process and further providing a AC LED package with at least two forward voltage drive
`
`options.
`
`[Para 34]
`
`According to another aspect of the invention multiple individual discrete LED
`
`chips are used to form at least one multi-voltage and/or multi-current AC LED circuit within
`
`a LED package thus providing a multi-voltage and/or multi current AC LED package. Each
`
`multi-voltage and/or multi-current AC LED circuit within the package comprises at least two
`
`single voltage AC LED circuits. Each single voltage AC LED circuit has at least two LEDs
`
`in anti-parallel configuration to accommodate direct AC voltage operation The LED package
`
`provides electrical connectivity pads on the exterior of the LED package that match the
`
`electrical connectivity pads of the at least two single voltage AC LED circuits integrated
`
`within the multi-voltage and/or multi-current AC LED package thus allowing the LED
`
`package to be wired into a series or parallel circuit configuration during the PCB assembly
`
`PGR2023-00016 - Home Depot
`Ex. 1018 - Page 9
`
`

`

`process and further providing a LED package with at least two forward voltage drive options.
`
`[Para 35]
`
`According to another aspect of the invention a multi-voltage and/or multi-
`
`current single chip AC LED and/or multi-voltage and/or multi current AC LED package is
`
`integrated within an LED lamp. The LED lamp having a structure that comprises a heat sink,
`
`a lens cover and a standard lamp electrical base. The multi-voltage and/or multi-current
`
`single chip AC LED and/or package is configured to provide a means of switching on at least
`
`one additional single voltage AC LED circuit within multi-voltage and/or multi-current AC
`
`LED circuit to provide increased brightness from the LED lamp.
`
`[Para 36]
`
`According to anther broad aspect of the invention at least one multi-current
`
`AC LED single chip is integrated within a LED package.
`
`[Para 37]
`
`According to another aspect of the invention, at least one single chip multi-
`
`current LED bridge circuit is integrated within a LED lamp having a standard lamp base.
`
`The single chip multi-current LED bridge circuit may be electrically connected together in
`
`parallel configuration but left open to accommodate switching on a switch to the more than
`
`one on the single chip and have at least one accessible electrical contact at each opposing end
`
`of the two series connected circuits and one accessible electrical contact at the center junction
`
`of the at least two individual serially connected LED circuits. The at least two individual
`
`circuits are integrated within a single chip.
`
`[Para 38]
`
`According to another aspect of the invention When the at least two circuits are
`
`left unconnected on the single chip and provide electrical pads for connectivity during the
`
`packaging process, the LED packager may wire them into series or parallel connection based
`
`on the desired voltage level specification of the end LED package product offering.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`Figure 1 shows a schematic view of a preferred embodiment of the invention;
`
`[Para 39]
`
`[Para 40]
`
`[Para 41]
`
`[Para 42]
`
`[Para 43]
`
`[Para 44]
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`[Para 45]
`
`[Para 46]
`
`[Para 47]
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`Figure 2 shows a schematic view of a preferred embodiment of the invention;
`
`Figure 3 shows a schematic view'of a preferred embodiment of the invention;
`
`Figure 4 shows a schematic view of a preferred embodiment of the invention;
`
`Figure 5 shows a schematic view of a' preferred embodiment of the invention;
`
`Figure 6 shows a schematic view of a preferred embodiment of the invention;
`
`Figure 7 shows a schematic view of a preferred embodiment of the invention;
`
`Figure 8 shows a schematic view of a preferred embodiment of the invention;
`
`Figure 9 shows a schematic view of a preferred embodiment of the invention;
`
`PGR2023-00016 - Home Depot
`Ex. 1018 - Page 10
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`

`

`[Para 48]
`
`[Para 49]
`
`and,
`
`Figure 10 shows a schematic view of a preferred embodiment of the invention;
`
`Figure 11 shows a schematic view of a preferred embodiment of the invention;
`
`[Para 50]
`
`Figure 12 shows a schematic view of a preferred embodiment of the invention;
`
`DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
`
`[Para 51]
`
`Figure 1 discloses a schematic diagram of a multi-voltage and/or multi-
`
`brightness LED lighting device 10. The multi-voltage and/or multi-brightness LED lighting
`
`device 10 comprises at least two AC LED circuits 12 configured in a imbalanced bridge
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`circuit, each of which have at least two LEDs 14. The at least two AC LED circuits have
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`electrical contacts 16a, 16b, 16c, and 16d at opposing ends to provide various connectivity
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`options for an AC voltage source input. For example, if 16a and 16c are electrically
`
`connected together and 16b and 16d are electrically connected together and one side of the
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`AC voltage input is applied to 16a and 16c and the other side of the AC voltage input is
`
`applied to 16b and 16d, the circuit becomes a parallel circuit with a first operating forward
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`voltage. If only 16a and 16c are electrically connected and the AC voltage inputs are applied
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`to electrical contacts 16b and 16d, a second operating forward voltage is required to drive the
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`single chip 18. The single chip 18 may also be configured to operate at more than one
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`brightness level "multi-brightness" by electrically connecting for example 16a and 16b and
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`applying one side of the line of an AC voltage source to 16a ad 16b and individually applying
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`the other side of the line from the AC voltage source a second voltage to 26b and 26c.
`
`[Para 52]
`
`Figure 2 discloses a schematic diagram of a multi-voltage and/or multi-
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`brightness LED lighting device 20 similar to the multi-voltage and/or multi-brightness LED
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`lighting device 10 described above in figure 1 . The at least two AC LED circuits 12 are
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`integrated onto a substrate 22. The at elast two AC LED circuits 12 configured in a
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`imbalanced bridge circuit, each of which have at least two LEDs 14. The at least two AC
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`LED circuits have electrical contacts 16a, 16b, 16c, and 16d on the exterior of the substrate
`
`22 and can be used to electrically configure and/or control the operating voltage and/or
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`brightness level of the multi-voltage and/or multi-brightness LED lighting device.
`
`[Para 53]
`
`Figure 3 discloses a schematic diagram of a multi-voltage and/or multi-
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`brightness LED lighting device 30 similar to the multi-voltage and/or multi-brightness LED
`
`lighting device 10 and 20 described in figures 1 and 2. The multi-voltage and/or multi-
`
`brightness LED lighting device 30 comprises at least two AC LED circuits 32 having at least
`
`PGR2023-00016 - Home Depot
`Ex. 1018 - Page 11
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`

`

`two LEDs 34 connected in series and anti-parallel configuration. The at least two AC LED
`
`circuits 32 have electrical contacts 36a, 36b, 36c, and 36d at opposing ends to provide various
`
`connectivity options for an AC voltage source input. For example, if 36a and 36c are
`
`electrically connected together and 36b and 36d are electrically connected together and one
`
`side of the AC voltage input is applied to 36a and 36c and the other side of the AC voltage
`
`input is applied to 36b and 36d, the circuit becomes a parallel circuit with a first operating
`
`forward voltage. If only 36a and 36c are electrically connected and the AC voltage inputs are
`
`applied to electrical contacts 36b and 36d, a second operating forward voltage is required to
`
`drive the multi-voltage and/or multi-brightness lighting device 30. The multi-voltage and/or
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`multi-brightness lighting device 30 may be a monolithically integrated single chip 38, a
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`monolithically integrated single chip integrated within a LED package 38 or a number of
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`individual discrete die integrated onto a substrate 38 to form a multi-voltage and/or multi-
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`brightness lighting device 30.
`
`[Para 54]
`
`Figure 4 discloses a schematic diagram of the same multi-voltage and/or
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`multi-brightness LED device 30 as described in figure 3 having the at least two AC LED
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`circuits 32 connected in parallel configuration to an AC voltage source and operating at a first
`
`forward voltage. A resistor 40 may be used to limit current to the multi-voltage and/or multi-
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`brightness LED lighting device 30.
`
`[Para 55]
`
`Figure 5 discloses a schematic diagram of the same multi-voltage and/or
`
`multi-brightness LED device 30 as described in figure 3 having the at least two AC LED
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`circuits 32 connected in series configuration to an AC voltage source and operating at a
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`second forward voltage that is approximately two times greater than the first forward voltage
`
`of the parallel circuit as described in figure 4. A resistor may be used to limit current to the
`
`multi-voltage and/or multi-brightness LED lighting device.
`
`[Para 56]
`
`Figure 6 discloses a schematic diagram of a multi-voltage and/or multi-
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`brightness LED lighting device 50. The multi-voltage and/or multi-br