Light emitting diode with built-in driver

Abstract

The utility model discloses a light-emitting diode with a built-in driver. The light-emitting diode comprises a lampshade, a base, a light-emitting diode wafer, a driver IC and a lead frame, the light emitting diode wafer comprises a three-color light mixing area and a white light area, and a partition plate is arranged between the three-color light mixing area and the white light area; a packaging and sealing structure is arranged between the lampshade and the base; the lampshade is provided with a scattering layer, a first scattering layer and a light guide structure. The light guide structure comprises a first light guide protruding block and a second light guide protruding block. According to the utility model, four-channel adjusting display of three-primary-color mixed display and white display is realized through the three-color light mixing area, the white light area and the partition plate, and independent packaging and light guiding are realized by arranging the lampshade consisting of the light guiding convex block I and the light guiding convex block II in a matched manner, so that the three-color light mixing area and the white light area are not influenced when being independently displayed; and the white light display effect and purity of the subsequent white light area are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of light emitting diode packaged lamp beads, in particular to a light emitting diode with a built-in driver. Background Art

[0002] The full name of SMD integrated packaged lamp beads is semiconductor light emitting diodes, which are made of semiconductor materials and can directly convert electrical energy into light energy and electrical signals into light signals. They are characterized by low power consumption, high brightness, bright colors, vibration resistance, long life, cold light source, etc. They are truly "green lighting". Lighting products with light emitting diodes as light sources will inevitably replace incandescent lamps in the future of the 21st century and become another revolution in human lighting.

[0003] The existing LED chip type and drive control IC integrated package DC5V drive lamp beads use a single-line serial cascade signal. When any point of the signal input or output is abnormal, it will cause the subsequent lamp beads to malfunction starting from the abnormal point. In response to the above problems, people invented the patent number: CN201821000928.X, which discloses a DC5V driven single-point single-control breakpoint resume chip integrated package lamp bead, which includes a lead frame, a light-emitting diode chip, a drive control IC and a controller. The surface of the lead frame is tightly fitted with a metal conductive layer, and a conductive glue is embedded and connected between the metal conductive layer and the lead frame. The middle part of the lead frame is close to the metal conductive layer and is fixedly connected with the drive control IC. A light-emitting diode chip is arranged on one side of the lead frame, and a protective glue is embedded and connected to the hollow part of the lead frame. This DC5V driven single-point single-control breakpoint resume chip integrated package lamp bead solves the defect of the single signal serial of the chip integrated package lamp bead in application, and upgrades the traditional single signal serial to dual signal serial to reduce the impact of signal transmission on application. By baking the protective glue, the conductive wire and the light-emitting diode chip can be covered to form a protective layer to increase the service life of the DV5V drive. However, the light-emitting diode still has the following problems: 1. The existing light-emitting diode adopts RGB three primary colors for adjustment to realize white light display, and shares a package display lampshade. This method causes the white light display to be too poor and color cast occurs, affecting the purity and effect of the white light display; 2. When the existing light-emitting diode is sealed with glue, it is necessary to make grooves on the base to ensure the subsequent packaging connection effect. When the existing grooves are mostly right-angled edges, there are gaps for the inflow of glue in the molten state, which affects the effect and quality of the packaging, resulting in glue leakage, causing the light to be exposed at the edge, affecting the subsequent display effect. Utility Model Content

[0004] The utility model aims to solve the technical problems of low purity and poor white light display effect of multi-channel light emitting diodes in the prior art, and the poor packaging quality leading to light leakage and reduced display effect.

[0005] The technical solution adopted by the utility model to achieve the above-mentioned purpose is:

[0006] A light-emitting diode with a built-in driver comprises a base, a light-emitting diode chip and a driver IC, wherein a cavity is provided in the base, the light-emitting diode chip is arranged in the cavity, and the driver IC is arranged on the light-emitting diode chip; a conductive layer is provided between the light-emitting diode chip and the cavity, and the base is also provided with a lead frame, and the lead frame is electrically connected to the conductive layer; the light-emitting diode chip comprises a three-color mixed light area and a white light area, the three-color mixed light area is used to provide red, green and blue three-primary color light sources, and the white light area is used to provide a white light source; a partition is provided between the three-color mixed light area and the white light area; the base is also provided with a lampshade, and a packaging sealing structure is provided between the lampshade and the base; the lampshade is also provided with a scattering layer and a light-guiding structure, and a scattering layer 1 is provided below the scattering layer.

[0007] As a further improvement, the three-color mixed light area includes an R light area, a G light area and a B light area, and the R light area, the G light area and the B light area are distributed in a side-arranged manner; the R light area is provided with a light-emitting chip one, the G light area is provided with a light-emitting chip two, and the B light area is provided with a light-emitting chip three, and the light-emitting chip one, the light-emitting chip two and the light-emitting chip three are all arranged on wires, and the wires are all electrically connected to the driving IC.

[0008] As a further improvement, the white light region is provided with a light-emitting chip four, and the light-emitting chip four is provided with a wire and is electrically connected to the driving IC.

[0009] As a further improvement, the light-guiding structure includes a light-guiding bump 1 and a light-guiding bump 2, the light-guiding bump 1 is arranged above the white light area, and the light-guiding bump 2 is arranged above the three-color mixed light area, and the light-guiding bump 1 and the light-guiding bump 2 are both provided with a focusing structure and a refraction channel, and the focusing structures are both arranged below the refraction channel.

[0010] As a further improvement, the light-focusing structure includes a plurality of inclined surfaces, and a refraction layer is provided in the refraction channel, and the refraction layer is used to refract the light into diffuse light at a plurality of angles.

[0011] As a further improvement, the lampshade is further provided with a light-emitting layer 1 and a light-emitting layer 2, wherein the light-emitting layer 1 is arranged below the light-emitting layer 2, the light-emitting layer 1 is connected to the light-guiding protrusion 1, and the light-emitting layer 2 is connected to the light-guiding protrusion 2.

[0012] As a further improvement, the lampshade is a transparent lampshade; the scattering layer and the scattering layer 1 are both provided with a plurality of liquid crystal molecules, light enters from the bottom of the light-guiding protrusion 1 and the light-guiding protrusion 2, and is refracted by the liquid crystal molecules in the scattering layer and the scattering layer 1, and the light is reflected from the upper end surface of the lampshade at different angles; the plurality of liquid crystal molecules in the scattering layer and the scattering layer 1 are arranged in an orderly manner up and down.

[0013] As a further improvement, the packaging sealing structure includes an annular protrusion and an annular groove, the annular groove is arranged on the inner side of the top edge of the base, the annular protrusion is arranged at the bottom of the lampshade, and the annular groove is cooperatively connected with the annular protrusion.

[0014] As a further improvement, the edge of the annular groove is provided with an arc surface, the arc surface and the side surface of the annular protrusion form a packaging groove, and the packaging groove is provided with a glue potting layer.

[0015] As a further improvement, the lead frame is provided with a plurality of power connection pins, and the plurality of power connection pins are electrically connected to the driver IC; and a third reflective layer is provided on both sides of the partition.

[0016] Compared with the prior art, the above one or more technical solutions in the built-in driver light emitting diode provided by the embodiment of the utility model have at least one of the following technical effects:

[0017] 1. The utility model realizes three-primary color mixing display and white display through the three-color mixing area and the white light area, and sets a partition between the three-color mixing area and the white light area to realize the separation between the three-color mixing area and the white light area, and cooperates with the lampshade composed of the first light guide protrusion and the second light guide protrusion to realize the separate encapsulation of light, so that the three-color mixing area and the white light area are not affected when they are displayed separately, and the effect and purity of the white light display of the subsequent white light area are improved; the light-emitting layer 1 and the light-emitting layer 2 are used to separate the light emitted by the three-color mixing area and the white light area, so as to ensure the purity of the light-emitting diode when irradiating white light, and improve the white light effect;

[0018] 2. A packaging sealing structure is provided to ensure the packaging sealing effect, prevent light from being emitted from the edge to affect the lighting effect and quality of the light-emitting diode, and a packaging groove formed by an arc surface is provided to increase the inflow of glue in a molten state, ensure coverage, and improve the packaging connection effect and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 This is a schematic diagram of the overall structure of the built-in driver light emitting diode of this embodiment;

[0021] Figure 2 is a schematic top view of a light emitting diode with a built-in driver of this embodiment;

[0022] Figure 3 for Figure 3 AA cross-sectional view in FIG.

[0023] Figure 4 This is a schematic diagram of an exploded view of a light emitting diode with a built-in driver of this embodiment;

[0024] Figure 5 Schematic diagram of the top view of the base of this embodiment. DETAILED DESCRIPTION

[0025] The following description is only a preferred embodiment of the present invention and does not limit the protection scope of the present invention.

[0026] For example, see the attached Figure 1 to Figure 5 A light-emitting diode 1 with a built-in driver includes a base 2, a light-emitting diode chip 3 and a driver IC 4, wherein a cavity is provided in the base 2, the light-emitting diode chip 3 is arranged in the cavity, a through hole is provided at the top of the cavity, and the driver IC 4 is arranged on the light-emitting diode chip 3; a conductive layer 5 is provided between the light-emitting diode chip 3 and the cavity, and the base 2 is also provided with a lead frame 6, and the lead frame 6 is electrically connected to the conductive layer 5; the light-emitting diode chip 3 includes a three-color light-mixing area 7 and a white light area 8, the three-color light-mixing area 7 is used to provide red, green and blue three-primary color light sources, and the white light area 8 is used to provide a white light source; a partition 9 is provided between the three-color light-mixing area and the white light area 8; the base 2 is also provided with a lampshade 10, and a packaging sealing structure 11 is provided between the lampshade 10 and the base 2; the lampshade 10 is also provided with a scattering layer 12 and a light-guiding structure 13, and a scattering layer 14 is provided below the scattering layer 12.

[0027] The three-color mixed light area 7 includes an R light area 70, a G light area 71 and a B light area 72, and the R light area 70, the G light area 71 and the B light area 72 are distributed in a side arrangement; the R light area 70 is provided with a light-emitting chip 1 700, the G light area 71 is provided with a light-emitting chip 2 710, and the B light area 72 is provided with a light-emitting chip 3 720, and the light-emitting chip 1 700, the light-emitting chip 2 710 and the light-emitting chip 3 720 are all arranged on wires, and the wires are all electrically connected to the driving IC4; the white light area 8 is provided with a light-emitting chip 4 80, and the light-emitting chip 4 80 is provided with wires and is electrically connected to the driving IC4; the three-color mixed light area 7 and the white light area 8 are used to realize four-color integration, so that in conjunction with the control of the driving IC4, the light-emitting diode 1 emits multiple colors in a limited space, and at the same time, the white light area 8 is separately packaged so that the displayed white is of better purity and high color consistency, thereby improving the display effect.

[0028] The light-guiding structure 13 includes a light-guiding bump 130 and a light-guiding bump 131. The light-guiding bump 130 is arranged above the white light area 8, and the light-guiding bump 131 is arranged above the three-color mixed light area 7. The light-guiding bump 130 and the light-guiding bump 131 are both provided with a focusing structure 132 and a refraction channel 133. The focusing structure 132 is arranged below the refraction channel 133. The light-guiding structure 13 is used to guide light to ensure the effect and quality of light irradiation.

[0029] The light-concentrating structures 132 include multiple inclined surfaces, and the light-concentrating structures 132 are used to improve the light-concentrating effect and improve the subsequent display effect and quality; a refraction layer is provided in the refraction channel 133, and the refraction layer is used to refract the light into diffuse light at multiple angles. The lampshade 10 is also provided with a light-emitting layer 100 and a light-emitting layer 2 101, and the light-emitting layer 100 is arranged below the light-emitting layer 2 101, and the light-emitting layer 100 is connected to the light-guiding protrusion 130, and the light-emitting layer 2 101 is connected to the light-guiding protrusion 2 131; the light-emitting layer 100 and the light-emitting layer 2 101 are used to separate the light emitted by the three-color mixed light area 7 and the white light area 8, so as to ensure the purity of the light-emitting diode 1 when irradiating white light and improve the white light effect.

[0030] The lampshade 10 is a transparent lampshade; the scattering layer 12 and the scattering layer 14 are both provided with a plurality of liquid crystal molecules, and light penetrates from the bottom of the light-guiding protrusion 130 and the light-guiding protrusion 2 131, and is refracted by the liquid crystal molecules in the scattering layer 12 and the scattering layer 14 to reflect light at different angles from the upper end surface of the lampshade 10; the plurality of liquid crystal molecules in the scattering layer 12 and the scattering layer 14 are arranged in an orderly manner up and down, and the scattering layer 12 and the scattering layer 14 are used to realize multiple refraction scattering, improve the light scattering efficiency and coverage, and improve the display effect.

[0031] The packaging sealing structure 11 includes an annular protrusion 110 and an annular groove 111. The annular groove 111 is arranged on the inner side of the top edge of the base 2. The annular protrusion 110 is arranged at the bottom of the lampshade 10. The annular groove 111 is matched with the annular protrusion 110. The edge of the annular groove 111 is provided with an arc surface 112. The arc surface 112 and the side of the annular protrusion 110 constitute a packaging groove. The packaging groove is provided with a glue potting layer 113. The packaging sealing structure 11 is used to ensure the packaging sealing effect and prevent light from being emitted from the edge to affect the lighting effect and quality of the light-emitting diode 1. The packaging groove is used to increase the outflow of glue in a molten state, thereby ensuring the coverage rate and improving the packaging connection effect and quality.

[0032] The lead frame 6 is provided with a plurality of power connection pins 60, and the plurality of power connection pins 60 are electrically connected to the driver IC 4; reflective layers three are provided on both sides of the partition 9, and the reflective layers three are used to reflect light, and the partition 9 is used for partitioning to prevent mixing when a separate three-color mixed light area 7 or white light area 8 needs to be displayed, thereby ensuring the display purity and effect of the subsequent white light source.

[0033] The utility model realizes three-primary color mixing display and white display through a three-color mixing area and a white light area, and a partition is arranged between the three-color mixing area and the white light area to realize the separation effect between the three-color mixing area and the white light area, and a lampshade composed of a first light guide protrusion and a second light guide protrusion is arranged to realize separate packaging of light, so that the three-color mixing area and the white light area are not affected when they are displayed separately, and the effect and purity of the white light display of the subsequent white light area are improved; the light emitting layer one and the light emitting layer two are arranged to separate the light emitted by the three-color mixing area and the white light area, so as to ensure the purity of the light emitting diode when irradiating white light, and improve the white light effect; the packaging sealing structure is arranged to ensure the packaging sealing effect, and prevent the light from being emitted from the edge to affect the lighting effect and quality of the light emitting diode, and the packaging groove composed of the arc surface is arranged to improve the inflow of glue in a molten state, so as to ensure the coverage rate and improve the packaging connection effect and quality.

[0034] The present invention is not limited to the above-mentioned embodiments. Other light-emitting diodes for internal driving obtained by using the same or similar structures or devices as the above-mentioned embodiments of the present invention are all within the protection scope of the present invention.

Claims

1. A light emitting diode with a built-in driver, characterized in that: The light-emitting diode includes a base, a light-emitting diode chip and a driver IC. A cavity is provided in the base, the light-emitting diode chip is arranged in the cavity, and the driver IC is arranged on the light-emitting diode chip; a conductive layer is provided between the light-emitting diode chip and the cavity, and the base is also provided with a lead frame, and the lead frame is electrically connected to the conductive layer; the light-emitting diode chip includes a three-color mixed light area and a white light area, the three-color mixed light area is used to provide red, green and blue three-primary color light sources, and the white light area is used to provide a white light source; a partition is provided between the three-color mixed light area and the white light area; the base is also provided with a lampshade, and a packaging sealing structure is provided between the lampshade and the base; the lampshade is also provided with a scattering layer and a light-guiding structure, and a scattering layer 1 is provided below the scattering layer.

2. The light emitting diode with built-in driver according to claim 1, characterized in that: The three-color mixed light area includes an R light area, a G light area and a B light area, and the R light area, the G light area and the B light area are distributed in a side-arranged manner; the R light area is provided with a light-emitting chip one, the G light area is provided with a light-emitting chip two, and the B light area is provided with a light-emitting chip three, and the light-emitting chip one, the light-emitting chip two and the light-emitting chip three are all arranged on wires, and the wires are all electrically connected to the driving IC.

3. The light emitting diode with built-in driver according to claim 2, characterized in that: The white light region is provided with a light emitting chip four, and the light emitting chip four is provided with a wire and is electrically connected to the driving IC.

4. The light emitting diode with built-in driver according to claim 3, characterized in that: The light-guiding structure includes a light-guiding bump 1 and a light-guiding bump 2, wherein the light-guiding bump 1 is arranged above the white light area, and the light-guiding bump 2 is arranged above the three-color mixed light area. The light-guiding bump 1 and the light-guiding bump 2 are both provided with a focusing structure and a refraction channel, and the focusing structures are both arranged below the refraction channel.

5. The light emitting diode with built-in driver according to claim 4, characterized in that: The light-focusing structures all include a plurality of inclined surfaces. A refraction layer is provided in the refraction channel. The refraction layer is used to refract the light into diffuse light at a plurality of angles.

6. The light emitting diode with built-in driver according to claim 5, characterized in that: The lampshade is further provided with a first light-emitting layer and a second light-emitting layer. The first light-emitting layer is arranged below the second light-emitting layer. The first light-emitting layer is connected to the first light-guiding protrusion, and the second light-emitting layer is connected to the second light-guiding protrusion.

7. The light emitting diode with built-in driver according to claim 6, characterized in that: The lampshade is a transparent lampshade; the scattering layer and the scattering layer 1 are both provided with a plurality of liquid crystal molecules, light penetrates from the bottom of the light-guiding protrusion 1 and the light-guiding protrusion 2, and is refracted by the liquid crystal molecules in the scattering layer and the scattering layer 1 to reflect light at different angles from the upper end surface of the lampshade; the plurality of liquid crystal molecules in the scattering layer and the scattering layer 1 are arranged in an orderly manner up and down.

8. The light emitting diode with built-in driver according to claim 7, characterized in that: The packaging sealing structure includes an annular protrusion and an annular groove, wherein the annular groove is arranged on the inner side of the top edge of the base, the annular protrusion is arranged on the bottom of the lampshade, and the annular groove is matched and connected with the annular protrusion.

9. The light emitting diode with built-in driver according to claim 8, characterized in that: The edge of the annular groove is provided with an arc surface, the arc surface and the side surface of the annular protrusion form a packaging groove, and the packaging groove is provided with a glue potting layer.

10. The light emitting diode with built-in driver according to claim 9, characterized in that: The lead frame is provided with a plurality of electrical connection pins, and the plurality of electrical connection pins are electrically connected to the driving IC; and a third reflective layer is provided on both sides of the partition.

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