摘要:
An LED package module according to an aspect of the invention may include: a substrate having predetermined electrodes thereon; a plurality of LED chips mounted onto the substrate, separated from each other at predetermined intervals, and electrically connected to the electrodes; a first color resin portion molded around at least one of the plurality of LED chips; a second color resin portion molded around all of the LED chips except for the LED chip around which the first color resin portion is molded, and having a different color from the first color resin portion; and a third color resin portion encompassing both the first color resin portion and the second color resin portion and having a different color from the first color resin portion and the second color resin portion.
摘要:
A light emitting diode (LED) package is disclosed. The LED package includes a lead frame comprising a thermal pad and at least two electrode pads disposed at a distance from the thermal pad; at least one LED mounted on the thermal pad and electrically connected with the at least two electrode pads through a wire; a package mold comprising a first cavity to receive the thermal pad and the at least two electrode pads and to partially expose the thermal pad and the at least two electrode pads through a first surface of the package mold, the first surface on which the at least one LED is mounted, and exposing the thermal pad and the at least two electrode pads through a surface coplanar with a second surface opposite to the first surface; and a molding unit disposed in the first cavity.
摘要:
There is provided an alternating current (AC) driven light emitting device including a plurality of LED arrays connected in series, each having a structure in which a plurality of LEDs are electrically connected to form a two-terminal circuit and emit light by a bidirectional voltage when an AC voltage is applied to the two-terminal circuit; and a switching device connected to at least one of the plurality of LED arrays and controlling a total driving voltage with respect to the plurality of LED arrays. The AC driven light emitting device permits operation from a low driving voltage Vf while having a high driving voltage at a high voltage Vf, thereby achieving excellence in terms of power factor, THD, and energy efficiency.
摘要:
The present invention provides an LED package including: a heat discharge body provided with a plurality of radially protruding heat discharge fins at an outer circumferential surface and molding material filled spaces between the heat discharge fins; a package body which is received on a top surface of the heat discharge body and has a cavity; a pair of lead frames extended from upper parts of the heat discharge body to both sides thereof; and an LED chip mounted inside the cavity.
摘要:
Provided is a ceramic package for headlamp, and a headlamp module having the same. The ceramic package for headlamp includes a body part, a pair of internal electrodes, and an electrode exposing part. The body part has a cavity formed therein. The cavity is upwardly opened to expose a light emitting diode mounted on a mounting part. The pair of internal electrodes in the body part is electrically connected to the light emitting diode. The electrode exposing part is stepped at either side of the body part to upwardly expose the internal electrode to the outside.
摘要:
Provided is an alternating current (AC) driven light emitting device, including: a plurality of half-wave driving units respectively having at least one light emitting diode (LED) and provided in a loop connecting respective half-wave driving unit terminals; and at least one full-wave driving unit having at least one LED and connecting one node between two of the plurality of half-wave driving units to another node between another two of the plurality of half-wave driving units, at least one of the half-wave driving unit and the full-wave driving unit having a parallel connection structure of at least two LEDs. An array of LEDs appropriate to being drivable by AC is provided to secure reliability in error in operation of some LEDs.
摘要:
Provided is a ceramic package for headlamp, and a headlamp module having the same. The ceramic package for headlamp includes a body part, a pair of internal electrodes, and an electrode exposing part. The body part has a cavity formed therein. The cavity is upwardly opened to expose a light emitting diode mounted on a mounting part. The pair of internal electrodes in the body part is electrically connected to the light emitting diode. The electrode exposing part is stepped at either side of the body part to upwardly expose the internal electrode to the outside.
摘要:
An LED package module according to an aspect of the invention may include: a substrate having predetermined electrodes thereon; a plurality of LED chips mounted onto the substrate, separated from each other at predetermined intervals, and electrically connected to the electrodes; a first color resin portion molded around at least one of the plurality of LED chips; a second color resin portion molded around all of the LED chips except for the LED chip around which the first color resin portion is molded, and having a different color from the first color resin portion; and a third color resin portion encompassing both the first color resin portion and the second color resin portion and having a different color from the first color resin portion and the second color resin portion. Accordingly, a reduction in luminous efficiency of an LED caused by yellowing is prevented to thereby increase luminous efficiency and achieve a reduction in size.
摘要:
Disclosed are an LED package, an LED package module having the same and a manufacturing method thereof, and a head lamp module having the same and a control method thereof. The light emitting diode package includes: a package substrate; a light emitting diode chip mounted on one surface of the package substrate; an electrode pad formed on the other surface of the package substrate and electrically connected to the light emitting diode chip; and a heat radiation pad formed on the other surface of the package substrate and electrically insulated from the electrode pad.
摘要:
There is provided an LED driving circuit. The LED driving circuit according to an aspect of the invention may include: at least one ladder circuit including: (n−1) number (here, n is a positive integer satisfying n≧2) of first branches provided between first and second junction points, and connected in-line with each other by n number of first middle junction points, (n−1) number of second branches arranged in parallel with the first branches, and connected in-line with each other by n number of second middle junction points between the first and second junction points, and n number of middle branches connecting m-th first and second middle junction points to each other, wherein at least one LED device is disposed on each of the first, second, and middle branches. Here, the number of LED devices included in each of the first and second branches is greater than the number of LED devices included in each of the middle branches.