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LIGHT-EMITTING MODULE

  • US 20170127486A1
  • Filed: 03/23/2015
  • Published: 05/04/2017
  • Est. Priority Date: 03/31/2014
  • Status: Active Grant
First Claim
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1. A light emitting module, comprising:

  • first to N-th (where N being a positive integer equal to or greater than

         1) light emitting element packages connected to each other in series; and

    a current level regulator regulating a level of current flowing in the N-th light emitting element package,wherein each of the first to N-th light emitting element packages includes;

    a light emitting cell, each of the light emitting cell including at least one light emitting element and including a plurality of sub cells connected to each other in series or in parallel; and

    an ON/OFF controller connected between the plurality of sub cells and selectively forming a path, through which current flows, in the light emitting cell according to a level of an external driving voltage,wherein at least one of the first to N-th light emitting element packages further includes a first current regulation resistor connected to an output of the light emitting cell,wherein the ON/OFF controller comprises a first reference voltage generator generating a first reference voltage using a voltage between a node between the sub cells and an output terminal of the ON/OFF controller, andwherein the ON/OFF controller selectively forms the path, through which current flows, in the light emitting cell by using the first reference voltage.

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