Abstract:
A backlight module capable of simple manufacture and a display device using the backlight module are provided. A reflective sheet to redirect the light from LEDs or other light source is located in position on the backlight module by means of optical lenses, which also spread the light for better uniformity of lighting. The optical lens includes inclined surfaces which form an opening with a circuit board that allows engagement of a reflective sheet. The reflective sheet is between the optical lens and the circuit board. The manufacturing step of fixing the reflective sheet to the circuit board is not required, and when any LED or other light emitting element, or the circuit board itself, fails, it is only necessary to disassemble the optical lens at the one position. Assembly and maintenance efficiency are improved, and the reliability of the backlight module and the display device is improved.
Abstract:
A light emitting diode package (LED) includes two electrodes spaced from each other, an insulating layer sandwiched between the two electrodes, an LED die arranged on the two electrodes and electrically connecting therewith, and an encapsulation layer covering the LED die. Each electrode includes a conductive sheet and a plurality of connecting pins connecting to the conductive sheet. A thickness of the connecting pin is smaller than that of the conductive sheet. A top surface of the connecting pin is coplanar with that of the conductive sheet. The LED package further includes a coating layer coating the connecting pin, part of the coating pin is sandwiched between the top surface of the connecting pin and the encapsulation layer.
Abstract:
An LED includes a base, a first chip and a second chip mounted on the base, a wire support formed on the base, and wires electrically connecting the first chip and the second chip with the base. The base includes a first lead, a second lead and an insulative band connecting the first lead and the second lead. A first wire connects an electrode of the first chip to the wire support, and a second wire connects an electrode of the second chip to the wire support. The first wire and the second wire are electrically connected to each other via a conductive layer formed on the wire support. The wire support in one embodiment is a Zener diode.
Abstract:
An exemplary light-emitting diode (LED) package includes an electrically insulating substrate, an electrode structure embedded in the insulating substrate, and a plurality of LED chips electrically connecting with the electrodes of the electrode structure respectively. The electrode structure includes a first electrode, a second electrode and a third electrode located between the first and second electrodes. Top surfaces of the first, second and third electrodes are exposed out of a top surface of the insulating substrate to support the LED chips. Bottom surfaces of the first and second electrodes are exposed out of a bottom surface of the substrate to connect with welding pads of a printed circuit board. A bottom surface of the third electrode is received in the substrate.
Abstract:
An light-emitting diode (LED) package includes a substrate, a electrode structure embedded in the substrate, and a plurality of LED chips electrically connecting with the electrode structure. The substrate includes a main portion and a protruding portion extending from a bottom surface of the main portion. The main portion is located above the protruding portion. The electrode structure includes a first, a second and a third electrode spaced from each other. The third electrode is located between the first and second electrodes. Top surfaces of the first, second and third electrodes are exposed out of the top surface of the main portion. Bottom surfaces of the first and second electrodes are exposed out of the bottom surface of the main portion. Bottom surface of the third electrode is covered by the protruding portion. The present disclosure also relates to a method for manufacturing the LED package.
Abstract:
A fabrication method for a light-emitting element package, the method comprising: providing a high precision wafer level mold module, the high precision wafer level mold module comprising an upper mold and a bottom mold; mounting a substrate with a plurality of light-emitting elements between the upper mold and the bottom mold; filling package materials into the high precision wafer level mold module to obtain package members mounted on the light-emitting elements; and removing the high precision wafer level mold module.
Abstract:
A lead frame for an LED package includes a substrate and a bonding electrode, a first connecting electrode, and a second connecting electrode embedded in the substrate. A top surface of the bonding electrode includes a first bonding surface and a second bonding surface spaced from the first bonding surface. A top surface of the first connecting electrode includes separated first and second connecting surfaces. Top surfaces of the bonding electrode, the first connecting electrode, and the second connecting electrode are exposed, and support and electrically connect with light emitting chips. LED packages can be mounted on the lead frame and electrically connect with each other. The conductive layout of the lead frame further permits installation of a zener diode which can be connected to the LED packages in series or in parallel.
Abstract:
A light emitting device includes a light source and a lens. The lens includes a light emitting surface, a top surface, four edge surfaces, and a bottom surface. The light emitting surface includes a central recess and two convex regions connecting the central recess at opposite sides. The light emitting surface is symmetrical about the central recess. The lens further defines a receiving space in the bottom surface and four positioning pins on the bottom surface. The receiving space includes a light incident surface. The two convex regions of the light emitting surface and the light incident surface are non-spherical surfaces. A maximum distance, dn, between the light source and the light incident surface is larger than a maximum distance, Dm, between the light incident surface and the light emitting surface. The light emitting device provides a wide-angle light distribution.
Abstract:
A flip chip light emitting diode includes a plurality of light emitting diodes and an encapsulation covering the plurality of light emitting diodes. Each of light emitting diode has a P electrode and an N electrode which are exposed out of the encapsulation.
Abstract:
An exemplary lead frame includes a substrate and a bonding electrode, a first connecting electrode, and a second connecting electrode embedded in the substrate. A top surface of the bonding electrode includes a first bonding surface and a second bonding surface spaced from the first bonding surface. A top surface of the first connecting electrode includes a first connecting surface and a second connecting surface spaced from the first connecting surface. Top surfaces of the bonding electrode, the first connecting electrode and the second connecting electrode are exposed out of the substrate to support and electrically connect with light emitting chips. Light emitting chips can be mounted on the lead frame and electrically connect with each other in parallel or in series; thus, the light emitting chips can be connected with each in a versatile way.