CN209962593U

CN209962593U - LED backlight source mounting structure

Info

Publication number: CN209962593U
Application number: CN201920619809.0U
Authority: CN
Inventors: 张利; 陈晓林
Original assignee: SHENZHEN WEITIAN PHOTOELECTRIC TECHNOLOGY Co Ltd
Current assignee: SHENZHEN WEITIAN PHOTOELECTRIC TECHNOLOGY Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-01-17
Anticipated expiration: 2029-04-30

Abstract

The utility model discloses a LED backlight mounting structure, including three to five LED backlight subassemblies, three to five LED backlight subassembly all includes bottom plate in a poor light, LED backlight backplate and side encapsulation, and LED backlight backplate integrated circuit connects on the bottom inner wall of bottom plate in a poor light, and the side encapsulation bonds on one side outer wall of LED backlight backplate, LED backlight backplate includes backlight subassembly and extraction structure, and extraction structure includes that connection claw and resin encapsulation are fought. The utility model discloses a plurality of LED backlight source subassemblies, LED backlight source subassembly form the spatial structure of certain angle, and through the luminous gathering effect of LED backlight source subassembly, it is high to guarantee the photoelectric emission efficiency on the LED backlight source subassembly dot matrix, reduces luminous inhomogeneous phenomenon, fixes through glue and electrostatic adsorption membrane between bottom plate in a poor light and the PCB board, reduces the loss problem at the encapsulation edge of LED backlight.

Description

LED backlight source mounting structure

Technical Field

The utility model relates to a LED backlight technical field especially relates to a LED backlight mounting structure.

Background

The LED backlight source mainly comprises a light source, a light guide plate, an optical film, a plastic frame and the like. The backlight source has the characteristics of high brightness, long service life, uniform light emission and the like. LED backlights have a longer lifetime (over 5000 hours) than EL and use dc voltages and are typically used in small monochrome displays such as phones, remote controls, microwave ovens, air conditioners, instruments, stereo audio equipment, etc. Through search, chinese patent publication No. CN207421810U discloses an LED backlight source convenient to mount, which includes an LED backlight light area and a mounting device, where the LED backlight light area and the mounting device are integrally formed, and the LED backlight light area is formed in the middle of the mounting device.

The mounting device of the LED backlight in the above patent has the following disadvantages: the LED backlight source is fixedly installed through the installation holes on the four sides, loss can be caused to the packaging edge of the LED backlight source, and meanwhile, the single package of the commonly used LED backlight source has uneven light emitting and poor light transmittance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a LED backlight source mounting structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a LED backlight mounting structure, includes three to five LED backlight subassemblies, three to five LED backlight subassembly all includes bottom plate in a poor light, LED backlight backplate and side encapsulation, and LED backlight backplate integrated circuit board connects on the bottom inner wall of bottom plate in a poor light, and the side encapsulation bonds on one side outer wall of LED backlight backplate, LED backlight backplate includes backlight subassembly and extraction structure, and extraction structure includes that connection claw and resin encapsulation are fought, and the connection claw is pegged graft on the inner wall that resin encapsulation was fought, the connection claw is L type structure, and the outer wall joint of connection claw has the contact source, the bottom outer wall of bottom plate in a poor light is opened flutedly, and the recess inner wall adsorbs there is the electrostatic absorption membrane.

Preferably, the backlight source assembly includes a light diffusion film, a total reflection prism sheet, a color changing film, a wedge-shaped light guide plate, and a reflection film, and the total reflection prism sheet is located between the light diffusion film and the color changing film, and the wedge-shaped light guide plate is located between the color changing film and the reflection film.

Preferably, the total reflection prisms are distributed on the outer wall of the bottom end of the total reflection prism plate in parallel at equal intervals, and the outer walls of four sides of the total reflection prism plate are provided with packaging strips.

Preferably, longitudinal lenses are distributed on the wedge-shaped surface of the wedge-shaped light guide plate at equal intervals, and the edges of the non-wedge-shaped surface of the wedge-shaped light guide plate are in a fillet structure.

Preferably, the wedge face of wedge light guide plate and the both sides of the same end of non-wedge face bond and have same black membrane, and the black membrane is the semiarch, and the inner wall grafting of black membrane has the LED lamp strip, black membrane and LED lamp strip all are located the inside of resin encapsulation fill.

Preferably, three to five of the LED backlight source assemblies are annularly distributed relative to the contact source, and the included angle between the three to five LED backlight source assemblies and the plane of the contact source is thirty to forty-five degrees.

Preferably, the LED lamp strip is connected with a switch, and the switch is connected with a microprocessor through a wire.

The utility model has the advantages that:

1. the LED backlight source adopts a three-dimensional structure with a certain angle formed by a plurality of LED backlight source components, and ensures high photoelectric luminous efficiency on a dot matrix of the LED backlight source components through the luminous aggregation effect of the LED backlight source components, and the phenomenon of uneven light emission caused by the light emission of a single plane can be avoided;

2. the bottom joint of this LED backlight has the bottom plate in a poor light, fixes through glue and electrostatic absorption membrane between bottom plate in a poor light and the PCB board, replaces traditional mounting hole installation fixed, reduces the encapsulation edge of LED backlight and causes the poor problem of luminous effect that the loss arouses.

In conclusion, the LED backlight source adopts the plurality of LED backlight source components, the LED backlight source components form a stereoscopic structure with a certain angle, the light-emitting and collecting effect of the LED backlight source components ensures that the photoelectric light-emitting efficiency on the dot matrix of the LED backlight source components is high, the phenomenon of uneven light emission is reduced, the backlight bottom plate and the PCB are fixed through glue and the electrostatic adsorption film, and the loss problem of the packaging edge of the LED backlight source is reduced.

Drawings

Fig. 1 is a schematic view of an installation structure of an LED backlight installation structure provided by the present invention;

fig. 2 is a schematic side view of an LED backlight assembly of an LED backlight mounting structure according to the present invention;

fig. 3 is a schematic view of a back plate structure of an LED backlight source mounting structure provided by the present invention.

In the figure: the LED backlight module comprises an LED backlight component 1, a contact source 2, an LED backlight backboard 3, a side package 4, a connecting claw 5, an LED lamp strip 6, a backlight bottom plate 7, an electrostatic adsorption film 8, a light diffusion film 9, a total reflection prism 10, a color changing film 11, a wedge-shaped light guide plate 12, a reflection film 13 and a black film 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, an LED backlight source mounting structure comprises three to five LED backlight source assemblies 1, each of the three to five LED backlight source assemblies 1 comprises a backlight bottom plate 7, an LED backlight source back plate 3 and a side package 4, the LED backlight source back plate 3 is clamped on the inner wall of the bottom of the backlight bottom plate 7, the side package 4 is adhered on the outer wall of one side of the LED backlight source back plate 3, the LED backlight source back plate 3 comprises a backlight source assembly and a leading-out structure, the leading-out structure comprises a connecting claw 5 and a resin package hopper, the connecting claw 5 is inserted on the inner wall of the resin package hopper, the connecting claw 5 is an L-shaped structure, the outer wall of the connecting claw 5 is clamped with a contact source 2, the outer wall of the bottom of the backlight bottom plate 7 is provided with a groove, and the inner wall of the groove is adsorbed with an electrostatic adsorption film 8, the backlight source assembly comprises a light-diffusing membrane 9, a, the total reflection prism plate is positioned between the light scattering membrane 9 and the color changing membrane 11, the wedge-shaped light guide plate 12 is positioned between the color changing membrane 11 and the reflecting membrane 13, the total reflection prisms 10 are equidistantly and parallelly distributed on the outer wall at the bottom end of the total reflection prism plate, the outer walls of four sides of the total reflection prism plate are respectively provided with an encapsulation strip, longitudinal lenses are equidistantly distributed on the wedge-shaped surface of the wedge-shaped light guide plate 12, the edges of the non-wedge-shaped surface of the wedge-shaped light guide plate 12 are of a fillet structure, the same black film 14 is bonded on two sides of the same end of the wedge-shaped surface and the non-wedge-shaped surface of the wedge-shaped light guide plate 12, the black film 14 is in a semi-arch shape, the inner wall of the black film 14 is spliced with the LED lamp strips 6, the black film 14 and the LED lamp strips 6 are positioned inside the resin encapsulation bucket, three to five LED backlight source assemblies 1 are annularly, the LED lamp strip 6 is connected with a switch, the switch is connected with a microprocessor through a wire, and the type of the microprocessor is ARM9 TDMI.

The working principle is as follows: when the LED backlight source is installed, the backlight bottom plate 7 and the PCB are fixed through glue and the electrostatic adsorption film 8, when the LED backlight source works, an upper light film sheet and a lower light film sheet are mutually orthogonally matched for use, a light-diffusing film sheet 9 generates a deflection angle effect, a reflection film 13 is arranged at the lower part of the light-diffusing film sheet, and a wedge-shaped light guide plate 12, the reflection film 13 and the like are further arranged; a white dot pattern is printed under the wedge-shaped light guide plate 12, an outgoing beam of about 60 degrees is generated by using a scattering effect of the pattern, an outgoing beam of about 30 degrees is changed by using a scattering refraction effect of the reflection film 13, and a normal direction of the beam is emitted to the display screen by the refraction type brightness enhancement film, so that components on a light surface are concentrated to the normal direction by two brightness enhancement films which are orthogonal to each other, thereby improving the brightness.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An LED backlight mounting structure includes three to five LED backlight units (1), characterized in that three to five LED backlight source components (1) respectively comprise a backlight bottom plate (7), an LED backlight source back plate (3) and a side packaging (4), the LED backlight source back plate (3) is clamped on the inner wall of the bottom of the backlight bottom plate (7), the side packaging (4) is adhered on the outer wall of one side of the LED backlight source back plate (3), the LED backlight source back plate (3) comprises a backlight source component and a lead-out structure, the leading-out structure comprises a connecting claw (5) and a resin packaging bucket, the connecting claw (5) is inserted on the inner wall of the resin packaging bucket, the connecting claw (5) is of an L-shaped structure, and the outer wall joint of connecting claw (5) has contact source (2), the bottom outer wall of bottom plate in a poor light (7) is opened flutedly, and the recess inner wall adsorbs has electrostatic absorption membrane (8).

2. An LED backlight mounting structure according to claim 1, wherein the backlight assembly comprises a light diffusion film (9), a total reflection prism sheet, a color-changing film (11), a wedge-shaped light guide plate (12), and a reflection film (13), and the total reflection prism sheet is located between the light diffusion film (9) and the color-changing film (11), and the wedge-shaped light guide plate (12) is located between the color-changing film (11) and the reflection film (13).

3. The LED backlight source mounting structure according to claim 2, wherein the total reflection prisms (10) are distributed in parallel on the outer wall of the bottom end of the total reflection prism plate at equal intervals, and the outer walls of four sides of the total reflection prism plate are provided with the package strips.

4. The LED backlight source mounting structure according to claim 2, wherein the wedge-shaped surface of the wedge-shaped light guide plate (12) has longitudinal lenses distributed at equal intervals, and the edges of the non-wedge-shaped surface of the wedge-shaped light guide plate (12) are rounded off.

5. The LED backlight source mounting structure of claim 2, wherein the same black film (14) is bonded to two sides of the same end of the wedge-shaped surface and the non-wedge-shaped surface of the wedge-shaped light guide plate (12), the black film (14) is semi-arched, the LED light bar (6) is inserted into the inner wall of the black film (14), and the black film (14) and the LED light bar (6) are both located inside the resin packaging hopper.

6. The LED backlight source mounting structure according to claim 1, wherein three to five of the LED backlight source assemblies (1) are annularly distributed relative to the contact source (2), and the included angle between the three to five LED backlight source assemblies (1) and the plane of the contact source (2) is thirty to forty-five degrees.

7. The LED backlight source mounting structure as claimed in claim 5, wherein the LED light bar (6) is connected with a switch, and the switch is connected with the microprocessor through a wire.