# US 2014/0191677 A1 · Light emitting module and lighting unit including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191677 A1 - Document ID: US20140191677A1 - Status: Published application - Kind: A1 - Application number: 14/146,023 - Filed: 2014-01-02 - Published: 2014-07-10 - Earliest claimed: 2013-01-04 - Assignees: LG Innotek Co., Ltd. - Inventors: Il Yeong KANG; Sang Hoon LEE; Keun Tak JOO; Tae Young CHOI - Web page: https://patentgrep.com/patent/US20140191677A1 ## CPC - H05B 45/48: having LEDs organised in strings and incorporating parallel shunting devices - H05B 45/46: having LEDs disposed in parallel lines - H05B 47/10: Controlling the light source - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract A light emitting module includes a body, first to Mth (wherein, M is an integer of 2 or greater) light emitting devices provided on the body to be spaced apart from each other, and a turn-on controller controlling the first to Mth light emitting devices to turn on. An mth (1≦m≦M) light emitting device among the first to Mth light emitting devices comprises first to Nth (wherein, N is an integer of 2 or greater) light emitting cells connected to each other in series. An nth (1≦n≦N) light emitting cell among the first to Nth light emitting cells includes at least one light emitting structure, and the turn-on controller simultaneously turns on or turns off the nth light emitting cells of the first to Mth light emitting devices. ## Claims ### Claim 1 A light emitting module, comprising: a body; first to Mth (wherein, M is an integer of 2 or greater) light emitting devices provided on the body to be spaced apart from each other; and a turn-on controller controlling the first to Mth light emitting devices to turn on, wherein an Mth (1≦m≦M) light emitting device among the first to Mth light emitting devices comprises first to Nth (wherein, N is an integer of 2 or greater) light emitting cells connected to each other in series, wherein an nth (1≦n≦N) light emitting cell among the first to Nth light emitting cells comprises at least one light emitting structure, and the turn-on controller simultaneously turns on or turns off the nth light emitting cells of the first to Mth light emitting devices. ### Claim 2 (depends on 1) The light emitting module according to claim 1, wherein the turn-on controller controls the first to Mth light emitting devices to turn on and off according to level of a driving voltage applied from the outside. ### Claim 3 (depends on 2) The light emitting module according to claim 2, wherein the turn-on controller sequentially turns on or turns off the first to Nth light emitting cells according to the level of a driving voltage. ### Claim 4 (depends on 1) The light emitting module according to claim 1, wherein the nth light emitting cells of the first to Mth light emitting devices are connected to each other in parallel. ### Claim 5 (depends on 1) The light emitting module according to claim 1, wherein the first to Mth light emitting devices are provided on the body to be spaced apart by an equal distance from each other. ### Claim 6 (depends on 1) The light emitting module according to claim 1, wherein the first to Mth light emitting devices are provided on the body to be spaced apart by different distances from each other. ### Claim 7 (depends on 5) The light emitting module according to claim 5, wherein a separation distance between the first to Mth light emitting devices is 72°. ### Claim 8 (depends on 5) The light emitting module according to claim 5, wherein a separation distance between the first to Mth light emitting devices is 90°. ### Claim 9 (depends on 5) The light emitting module according to claim 5, wherein a separation distance between the first to Mth light emitting devices is 120°. ### Claim 10 (depends on 5) The light emitting module according to claim 5, wherein the first to Mth light emitting devices are radially provided on the body. ### Claim 11 (depends on 10) The light emitting module according to claim 10, wherein the first to Mth light emitting devices are provided with the turn-on controller as a center. ### Claim 12 (depends on 2) The light emitting module according to claim 2, wherein the turn-on controller comprises: first to Mth switches provided between adjacent ones of the first to Nth light emitting cells and forming a path through which current flows in the adjacent light emitting cells; and a switching controller controlling switching of the first to Mth switches according to the level of the driving voltage. ### Claim 13 (depends on 1) The light emitting module according to claim 1, wherein M=N=4. ### Claim 14 (depends on 1) The light emitting module according to claim 1, wherein the first to Nth light emitting cells of each of the first to Mth light emitting devices are provided to contact each other. ### Claim 15 (depends on 1) The light emitting module according to claim 1, wherein the first to Nth light emitting cells of each of the first to Mth light emitting devices are provided an equal distance from each other. ### Claim 16 (depends on 1) The light emitting module according to claim 1, wherein the turn-on controller is provided at a center of the body. ### Claim 17 (depends on 1) The light emitting module according to claim 1, wherein the turn-on controller is provided at an edge portion of the body. ### Claim 18 (depends on 1) The light emitting module according to claim 1, wherein light emitting regions of the light emitting structures of the nth light emitting cells of the first to Mth light emitting devices have the same area. ### Claim 19 A light emitting module, comprising: a body; first to Mth (wherein, M is an integer of 2 or greater) light emitting devices provided on the body to be spaced apart from each other; a rectifier rectifying an alternating current signal applied from the outside to convert the alternating current signal into a ripple signal; and a turn-on controller controlling the first to Mth light emitting devices to turn on according to the level of the ripple signal, wherein an Mth (1≦m≦M) light emitting device among the first to Mth light emitting devices comprises first to Nth (wherein, N is an integer of 2 or greater) light emitting cells connected to each other in series, and the turn-on controller simultaneously turns on or turns off nth light emitting cells of the first to Mth light emitting devices. ### Claim 20 (depends on 1) A lighting unit having the lighting module of claim 1, wherein the lighting unit comprises: a case body; a connection terminal installed at the case body and receiving power; and the light emitting module installed at the case body.