# US 2014/0152185 A1 · Limited flicker light emitting diode string > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152185 A1 - Document ID: US20140152185A1 - Status: Published application - Kind: A1 - Application number: 14/134,723 - Filed: 2013-12-19 - Published: 2014-06-05 - Earliest claimed: 2006-11-08 - Assignees: Seasonal Specialties, LLC - Inventors: Robert C. Neuman; Steven J. Altamura - Web page: https://patentgrep.com/patent/US20140152185A1 ## CPC - F21S 4/10: with light sources attached to loose electric cables, e.g. Christmas tree lights - H05B 45/30: Driver circuits - H05B 45/40: Details of LED load circuits - Y10S 362/806: Ornamental or decorative - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A limited flicker decorative light-emitting diode (LED) string includes a power plug adapted to connect to an alternating current (AC) power source and supply AC power to the LED string, a first pair of LEDs and a second pair of LEDs, a plurality of LEDs electrically connected in series to form an LED series, and a plurality of rectifying diodes. The plurality of rectifying diodes provides full-wave rectification of the AC power to the LED series and half-wave rectification of the AC power to the first and second pair of LEDs. ## Claims ### Claim at position 1 -30. (canceled) ### Claim 31 A limited flicker decorative light-emitting diode (LED) string, comprising: a. a connector to an alternating current (AC) power source having first and second output connections; b. a plurality of LEDs electrically connected in series to form an LED series string, said string having first and second electrical ends; c. a first LED electrically series connected to a first rectifier to form a first diode pair; d. a second LED electrically series connected to a second rectifier to form a second diode pair; e. a third LED electrically series connected to a third rectifier to form a third diode pair; f. a fourth LED electrically series connected to a fourth rectifier to form a fourth diode pair; g. said first and second diode pairs being electrically joined at one end to each other and the first end of said LED string; h. said third and fourth diode pairs being electrically joined at one end to each other and to the second end of said LED string; i. the remaining end of said first diode pair being connected to said first output connection of said power source; j. the remaining end of said second diode pair being connected to said second output connection of said power source; k. the remaining end of said third diode pair being connected to said first output connection of said power source; l. the remaining end of said fourth diode pair being connected to said second output connection of said power source; wherein said diode pairs comprising distinct diodes from other diode pairs, whereby the LED light string receives full wave rectified power and exhibit a minimum of flicker, whereas said diode pairs receive half wave rectified power and exhibits greater flicker than said LED light string, so that the overall visual impression of the light string has limited flicker. ### Claim 32 (depends on 31) The light string of claim 31 wherein each of said diode pairs is contained within a bulb assembly. ### Claim 33 (depends on 31) The light string of claim 31, wherein said first and second diode pairs are connected in back to back so that current may not flow from one pair to the other and wherein said third and fourth diode pairs are connected in back to back so that current may not flow from one pair to the other; so that together, said pairs form a full wave rectifier with each pair including an illuminating diode. ### Claim 34 (depends on 33) The light string of claim 33, wherein the remaining end of said first diode pair is connected to the remaining end of said third diode pair. ### Claim 35 (depends on 33) The light string of claim 33, wherein the remaining end of said second diode pair is connected to the remaining end of said forth diode pair. ### Claim 36 (depends on 33) The light string of claim 33, wherein the remaining end of said first diode pair is connected to the remaining end of said third diode pair via a wire which spans the length of said LED light string. ### Claim 37 (depends on 33) The light string of claim 33, wherein the remaining end of said second diode pair is connected to the remaining end of said forth diode pair via a wire which spans the length of said LED light string. ### Claim 38 (depends on 31) The light string of claim 31 wherein said diode pairs are each contained within a single housing. ### Claim 39 (depends on 38) The light string of claim 38 wherein said housing is an LED housing. ### Claim 40 (depends on 38) The light string of claim 38 wherein said housing is a socket. ### Claim 41 A method of producing an LED light string connected to an AC power connector having first and second output connections, said light string having a minimum of flicker and produced without the need for any non-illuminating enclosure to house rectifiers, comprising the steps of: a. connecting a plurality of LEDs electrically connected in series to form an LED series string, said string having first and second electrical ends; b. connecting a first LED electrically series connected to a first rectifier to form a first diode pair and forming said pair within a single light emitting housing; c. connecting a second LED electrically series connected to a second rectifier to form a second diode pair and forming said pair within a single light emitting housing; d. connecting a third LED electrically series connected to a third rectifier to form a third diode pair and forming said pair within a single light emitting housing; e. connecting a fourth LED electrically series connected to a fourth rectifier to form a fourth diode pair and forming said pair within a single light emitting housing; f. joining said first and second diode pairs at one end to each other and the first end of said LED string; g. joining said third and fourth diode pairs at one end to each other and to the second end of said LED string; h. connecting the remaining end of said first diode pair to said first output connector; i. connecting the remaining end of said second diode pair to said second output connector; j. connecting the remaining end of said third diode pair said first output connector; k. connecting the remaining end of said fourth diode pair to said second output connector; wherein the diode pairs are distinct from each other, thereby creating an LED light string which when connected to an AC power source, receives full wave rectified power and exhibits a minimum of flicker, whereas said diode pairs receive half wave rectified power and exhibit greater flicker than said LED light string, so that the overall visual impression of the light string has limited flicker and wherein all housing emit light from an LED. ### Claim 42 (depends on 41) The method of claim 41, wherein each pair is formed within an LED housing. ### Claim 43 (depends on 41) The method of claim 41, wherein each pair is formed within a socket housing.