CN218295371U - LED lamp panel and miniLED backlight - Google Patents

Abstract

The utility model discloses a LED lamp plate and mini LED backlight, this LED lamp plate include the PCB board and set up the positive a plurality of LED lamp pearls that are the matrix arrangement of PCB board, among a plurality of LED lamp pearls, wherein, the periphery that is located the LED lamp pearl of the even number position on odd number line and the periphery that is located the LED lamp pearl of the odd number position on even number line are equipped with a square reflection cup respectively, the top of reflection cup, the equal opening in bottom, the bottom of reflection cup sets up the front of PCB board, in four inner walls of reflection cup, every inner wall is equipped with tilt up's first inclined plane or first cambered surface respectively, in four outer walls of reflection cup, every outer wall is equipped with tilt up's second inclined plane or second cambered surface respectively. The utility model discloses can narrow the luminous region of LED lamp pearl to reduce the crosstalk phenomenon between the adjacent LED lamp pearl, improved the luminance of mini LED backlight.

Description

LED lamp panel and miniLED backlight

Technical Field

The utility model relates to a backlight technical field, specificly relate to a LED lamp plate and mini LED backlight.

Background

The LED lamp panel of current mini LED backlight generally includes the PCB board and sets up a plurality of LED lamp pearls that are the matrix arrangement at the PCB board positive plane, because the light that LED lamp pearl sent is usually along dispersing all around to make LED lamp pearl's luminous region bigger, the crosstalk phenomenon can appear between the adjacent LED lamp pearl like this, has reduced the luminance of mini LED backlight.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a LED lamp plate and mini LED backlight can narrow the luminous region of LED lamp pearl to reduce the crosstalk phenomenon between the adjacent LED lamp pearl, improved the luminance of mini LED backlight.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model discloses an aspect provides a LED lamp plate, be in including PCB board and setting the positive a plurality of LED lamp pearls that are the matrix arrangement of PCB board, among a plurality of LED lamp pearls, wherein, the periphery that is located the LED lamp pearl of the even number position on odd number line and the periphery that is located the LED lamp pearl of the odd number position on even number line are equipped with a square reflection cup respectively, the equal opening in top, the bottom of reflection cup, the bottom setting of reflection cup is in the front of PCB board, in four inner walls of reflection cup, every inner wall is equipped with the first inclined plane or the first cambered surface of tilt up respectively, in four outer walls of reflection cup, every outer wall is equipped with the second inclined plane or the second cambered surface of tilt up respectively.

Preferably, the first inclined plane and the second inclined plane have the same inclination angle.

Preferably, the inclination angles of the first inclined plane and the second inclined plane are both 15-45 degrees.

As a preferable technical scheme, four outer corners of the reflection cup are respectively provided with an outer corner chamfer, two sides of the outer corner chamfer are respectively connected with two adjacent second inclined planes, and a gap is formed between two adjacent outer corner chamfers of two adjacent reflection cups.

According to the preferable technical scheme, the bottom end of the reflection cup is provided with a welding sheet, the front face of the PCB is provided with a welding pad at a position corresponding to the welding sheet, and the welding sheet is welded to the corresponding welding pad.

As a preferred technical scheme, the reflecting cup is of an integral injection molding structure.

As a preferred technical scheme, the reflecting cup is a PPA plastic part, a PC plastic part or an ABS plastic part.

Preferably, the top end of the reflector cup has an SMT adsorption surface.

The second aspect of the utility model provides a mini LED backlight, including any one of the above-mentioned technical scheme LED lamp plate.

The beneficial effects of the utility model are that: the utility model discloses a reflection cup that sets up, the luminous region of LED lamp pearl can narrow to reduce the crosstalk phenomenon between the adjacent LED lamp pearl, improved the luminance of mini LED backlight.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is a schematic structural view of an LED lamp panel according to a first embodiment of the present invention;

FIG. 2 is a schematic top view of the LED light panel of FIG. 1;

FIG. 3 is an enlarged partial schematic view at F of FIG. 2;

FIG. 4 is a schematic structural diagram of a reflective cup of the LED lamp panel shown in FIG. 1;

FIG. 5 is a schematic top view of a reflector cup of the LED lamp panel of FIG. 1;

FIG. 6 isbase:Sub>A schematic cross-sectional view at A-A of the reflector cup of FIG. 5;

FIG. 7 is a schematic cross-sectional view at B-B of the reflector cup shown in FIG. 5;

FIG. 8 is a schematic bottom view of a reflector cup of the LED light panel of FIG. 1;

FIG. 9 is a schematic cross-sectional view of a reflector cup and an LED bead of the LED lamp panel shown in FIG. 1;

fig. 10 is a schematic top view of a reflective cup of an LED lamp panel according to a second embodiment of the present invention;

fig. 11 is a schematic cross-sectional view of the reflector cup of fig. 10.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection relations related in the patent do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection auxiliary components according to specific implementation conditions. The utility model discloses each technical feature in the creation can the interactive combination under the prerequisite that does not contradict conflict mutually.

First embodiment

Referring to fig. 1, fig. 2, fig. 4 to fig. 8, a first embodiment of the present invention provides an LED lamp panel, which includes a PCB 10 and a plurality of LED lamp beads 20 arranged in a matrix on the front side of the PCB 10. Among the plurality of LED lamp beads 20, a square reflecting cup 30 is respectively disposed on the periphery of the even-numbered LED lamp beads 20 located in the odd-numbered rows and the periphery of the odd-numbered LED lamp beads 20 located in the even-numbered rows. The top and bottom ends of the reflector cup 30 are open, and in this embodiment, the length and width of the opening at the bottom end of the reflector cup 30 are the same as those of the opening at the top end of the reflector cup 30. The bottom end of the reflective cup 30 is disposed on the front surface of the PCB board 10. The even-numbered LED lamp beads 20 in the odd-numbered rows and the odd-numbered LED lamp beads 20 in the even-numbered rows are respectively located at the center of the opening at the bottom end of the corresponding reflective cup 30. Of the four inner walls of the reflector cup 30, each inner wall is provided with a first inclined surface 32 inclined upward, and of the four outer walls of the reflector cup 30, each outer wall is provided with a second inclined surface 34 inclined upward. The first slope 32 and the second slope 34 each serve as a reflection surface of the reflection cup 30. The first inclined plane 32 of each inner wall and the second inclined plane 34 of the corresponding outer wall are symmetrically arranged, for example, the first inclined plane 32 of the left inner wall of the reflective cup 30 and the second inclined plane 34 of the left outer wall of the reflective cup 30 are symmetrically arranged. Through the structure, when the LED backlight is in actual use, through the arranged reflection cup 30, wherein the LED lamp beads 20 of the reflection cup 30 are arranged on the periphery, the light rays 100 which are diffused along the periphery can be respectively reflected by the four first inclined planes 32 of the reflection cup 30 and then are diffused out through the top end of the reflection cup 30, for example, as shown in fig. 9, the light rays 100 which are diffused towards the left side of the LED lamp beads 20 can be reflected by the first inclined planes 32 on the inner wall of the left side of the reflection cup 30 and then are diffused out through the top end opening of the reflection cup 30, the LED lamp beads 20 of the reflection cup 30 are not arranged on the periphery, the light rays which are emitted along the periphery can be reflected by the second inclined planes 34 of the adjacent reflection cups 30, so that the light-emitting area of the LED lamp beads 20 can be narrowed, the light crosstalk phenomenon between the adjacent LED lamp beads 20 is reduced, the brightness of a mini LED backlight source is improved, meanwhile, the reflection cup 30 is arranged on the periphery of the LED lamp beads 20 which are positioned at the even number positions and the periphery of the LED lamp beads 20 which are positioned at the even number rows, the periphery of the LED lamp beads 20 is replaced by two rows, and the periphery, the reflection cup 20 can be used as long as the cost of the reflection cup is reduced, when the LED lamp beads 30 is used, the reflection cup 20, and the periphery of the reflection cup 20 can be replaced by replacing the reflection cup, and the reflection cup 20, and the periphery of the reflection cup can be used conveniently used.

In the present embodiment, the first inclined surface 32 and the second inclined surface 34 have the same inclination angle. The first and second inclined surfaces 32 and 34 are inclined at an angle of 15-45 degrees, preferably 15 degrees. It is understood that the angles of inclination of the first and second inclined surfaces 32 and 34 can be set according to actual conditions.

Four outer corners of the reflective cup 30 are respectively provided with an outer corner chamfer 36, two sides of the outer corner chamfer 36 are respectively connected with two adjacent second inclined planes 34, two adjacent outer corner chamfers 36 of two adjacent reflective cups 30 are oppositely arranged, and a gap 40 is arranged between the two outer corner chamfers 36, as shown in fig. 3, the structure is convenient for replacing the reflective cup 30, and the reflective cup 30 is conveniently arranged on the front surface of the PCB board 10.

Four inner corners of the reflection cup 30 are respectively provided with an inner angle chamfer 38, two sides of the inner angle chamfer 38 are respectively connected with two adjacent first inclined planes 32, and the inner angle chamfer 38 corresponds to the outer angle chamfer 36, so that the reflection cup 30 is attractive in appearance.

In this embodiment, the reflective cup 30 is an integral injection molding structure, which is convenient for manufacturing. The reflector 30 is a PPA (polyphosphoric acid) plastic part, and the PPA material has good strength, toughness and hardness, can still maintain strength and hardness under high temperature and high humidity environment, is not easy to deform, has long service life, and is convenient for being integrally formed through an injection molding process. It is understood that the reflective cup 30 may be a plastic resin member such as a PC (polycarbonate) plastic member, an ABS (acrylonitrile-butadiene-styrene) plastic member, and the like.

As shown in fig. 8, the bottom end of the reflecting cup 30 is provided with a soldering terminal 39, and the front surface of the pcb board 10 is provided with a soldering land at a position corresponding to the soldering terminal 39, to which the soldering terminal 39 is soldered. The top end of the reflection cup 30 has a Surface Mount Technology (SMT) adsorption Surface, so that the suction head of the SMT chip mounter can adsorb the reflection cup 30 conveniently, and when the reflection cup 30 is actually manufactured, the reflection cup 30 can be arranged on the front Surface of the PCB board 10 through the SMT chip mounting process, so that the production efficiency is improved.

In this embodiment, the soldering tab 39 is a metal sheet, the number of the soldering tabs 39 is four, the four soldering tabs 39 are respectively located at four corners of the bottom end of the reflective cup 30, and the number of the soldering pads corresponds to the number of the soldering tabs 39. It is understood that the number and shape of the bonding pads 39 and the bonding pads can be set according to actual conditions.

The minimum distance between the LED lamp bead 20 and the first inclined surface 32 and the height of the reflecting cup 30 can be set according to actual conditions. The quantity of LED lamp pearls can set up according to actual conditions.

Second embodiment

Referring to fig. 10 and 11, the welding sheet 39 is not shown in fig. 10 and 11, but the present embodiment is different from the first embodiment in that the length and the width of the opening at the bottom end of the reflective cup 30 are both smaller than the length and the width of the opening at the top end of the reflective cup 30. The length and the width of the opening at the bottom end of the reflecting cup 30 are both larger than those of the LED lamp bead 20. Each of the four inner walls of the reflector cup 30 has a first arc surface 32a, and each of the four outer walls of the reflector cup 30 has a second arc surface 34a. The first arc surface 32a and the second arc surface 34a both serve as a reflection surface of the reflection cup 30. The first arc surface 32a of each inner wall and the second arc surface 34a of the corresponding outer wall are respectively arranged in parallel, for example, the first arc surface 32a of the left inner wall of the reflective cup 30 and the second arc surface 34a of the left outer wall of the reflective cup 30 are arranged in parallel left and right. The curvature of the first arc surface 32a and the second arc surface 34a can be set according to actual conditions. Through this kind of structure, when the in-service use, through the reflection cup 30 that sets up, wherein, the periphery is provided with the LED lamp pearl 20 of reflection cup 30, its light that diverges all around can be reflected by four first cambered surfaces 32a of reflection cup 30 respectively, then the top opening through reflection cup 30 is diverged away, the periphery does not set up the LED lamp pearl 20 of reflection cup 30, its light that sends all around along can be reflected by adjacent second cambered surface 34a of reflection cup 30, can reach foretell technological effect equally through this kind of structure.

In this embodiment, four outer corners of the reflective cup 30 are respectively provided with an outer corner chamfer, and two sides of the outer corner chamfer are respectively connected with two adjacent second arc surfaces 34a. Two adjacent external angle chamfer angles of two adjacent reflection cups 30 are arranged oppositely and have a gap between the two, and the structure can also facilitate the replacement of the reflection cups 30.

The four inner corners of the reflective cup 30 are not provided with inner corner chamfer angles, and two sides of each first arc surface 32a are respectively connected with two adjacent first arc surfaces 32 a.

The utility model also provides a mini LED backlight, including foretell LED lamp plate, through this kind of LED lamp plate, can improve luminance, display effect is good.

While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.

Claims (9)

1. The utility model provides a LED lamp panel, includes the PCB board and sets up the positive a plurality of LED lamp pearls that are the matrix arrangement of PCB board, its characterized in that, among a plurality of LED lamp pearls, wherein, the periphery that is located the even number position LED lamp pearl in odd number line and the periphery that is located the odd number position LED lamp pearl in even number line are equipped with a square reflection cup respectively, the top of reflection cup, the equal opening in bottom, the bottom of reflection cup sets up the front of PCB board, in four inner walls of reflection cup, every inner wall is equipped with tilt up's first inclined plane or first cambered surface respectively, in four outer walls of reflection cup, every outer wall is equipped with tilt up's second inclined plane or second cambered surface respectively.

2. The LED lamp panel of claim 1, wherein the inclination angles of the first inclined plane and the second inclined plane are the same.

3. The LED lamp panel of claim 2, wherein the inclination angles of the first inclined plane and the second inclined plane are both 15-45 degrees.

4. The LED lamp panel according to claim 1, wherein four outer corners of the reflection cup are respectively provided with an outer corner chamfer, two sides of each outer corner chamfer are respectively connected with two adjacent second inclined planes, and a gap is formed between two outer corner chamfers, close to each other, of two adjacent reflection cups.

5. The LED lamp panel according to claim 1, wherein a welding piece is arranged at the bottom end of the reflection cup, a welding pad is arranged on the front face of the PCB at a position corresponding to the welding piece, and the welding piece is welded to the corresponding welding pad.

6. The LED lamp panel of claim 1, wherein the reflective cup is of an integral injection molding structure.

7. The LED lamp panel of claim 1, wherein the reflective cup is a PPA plastic part, a PC plastic part or an ABS plastic part.

8. The LED light panel of claim 1, wherein the top end of the reflector cup has an SMT absorption surface.

9. A mini LED backlight comprising the LED lamp panel of any one of claims 1 to 8.

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