CN217157018U - Direct type backlight module and display equipment - Google Patents

Abstract

The utility model discloses a direct type backlight module and display equipment, the direct type backlight module comprises a lamp panel structure, a diffusion plate and an optical diaphragm which are sequentially arranged; the lamp panel structure comprises a metal base layer, an insulating layer, a circuit layer, a first reflecting layer, a plurality of LED light sources and a plurality of conductive devices, wherein the metal base layer, the insulating layer, the circuit layer and the first reflecting layer are sequentially connected, a diffusion plate is arranged above the first reflecting layer, and the plurality of LED light sources and the plurality of conductive devices are connected onto the circuit layer so that the conductive devices are connected with the single-layer circuit layer to form a complete conductive path; the metal base layer is combined to accelerate heat dissipation, the overall heat dissipation effect is improved, and the optical effect is prevented from being influenced by thermal deformation of parts. The display equipment using the direct type backlight module can reduce the thickness and the weight and continuously has better display effect.

Description

Direct type backlight module and display device

Technical Field

The utility model relates to a backlight unit field especially relates to a straight following formula backlight unit and display device.

Background

The circuit board is a basic accessory of electronic products and is used for connecting and driving electronic devices and the like. Circuit boards are classified into three major categories, single-sided boards, double-sided boards, and multilayer circuit boards, depending on the number of layers. Conventional single-sided boards, in which parts are concentrated on one side and wires are concentrated on the other side, are called single-sided circuit boards, and are generally simple to manufacture and low in cost, but cannot be designed into complicated circuits. The double-sided board is an extension of the single-sided board, the two sides of the double-sided board are coated with copper wires, and the circuits between the two sides can be conducted through the via holes to form the required network connection. The multilayer circuit board is formed by laminating more than three conductive pattern layers and insulating materials between the conductive pattern layers at intervals, and the conductive patterns among the conductive pattern layers are interconnected according to requirements. The multilayer circuit board is a product of the development of electronic information technology towards high speed, multiple functions, large capacity, small volume and light weight.

The lamp panel used in the display device generally adopts a structure of a multilayer circuit board, so that a more complex circuit can be arranged, and the design flexibility is increased; but the multilayer circuit board can lead to product thickness and cost to increase, and multilayer circuit board mode interconnecting link such as punch simultaneously, and this type of design can increase the manufacturing process complexity, and is unfavorable for the circuit board heat dissipation.

SUMMERY OF THE UTILITY MODEL

In order to overcome above-mentioned prior art an at least defect, the utility model provides a straight following formula backlight module and display device to solve the complicated and radiating problem that is unfavorable for of lamp plate structure manufacturing process of current straight following formula backlight module's multilayer circuit board.

The utility model discloses a solve the technical scheme that its problem adopted and be:

in a first aspect, the utility model discloses a direct type backlight module, which comprises a lamp panel structure, a diffusion plate and an optical diaphragm, wherein the lamp panel structure, the diffusion plate and the optical diaphragm are sequentially arranged;

the lamp plate structure includes metal basic unit, insulating layer, circuit layer, first reflection stratum, a plurality of LED light source and a plurality of electrically conductive device, metal basic unit the insulating layer the circuit layer with first reflection stratum connects gradually, the diffuser plate sets up the top of first reflection stratum, it is a plurality of the LED light source with a plurality of electrically conductive device all connect in on the circuit layer, so that electrically conductive device is single layer the circuit layer is connected and is formed complete conductive path.

The utility model provides a straight following formula backlight unit connects on the single-deck circuit layer through LED light source and conductive device to make conductive device connect the complete conductive path of formation with single-deck circuit layer, can reduce the thickness of lamp plate structure, reduce the complexity of technology, reduce the processing operation, reduce manufacturing cost; the metal base layer is combined to accelerate heat dissipation, the overall heat dissipation effect is improved, and the optical effect is prevented from being influenced by thermal deformation of parts.

Further, the conductive device is in accordance with a resistor packaging form, and may be a resistor.

Further, the metal base layer is an aluminum base layer.

Furthermore, a through hole for accommodating the LED light source is arranged on the first reflecting layer.

Furthermore, a cross opening corresponding to the position of the conductive device is further arranged on the first reflecting layer.

Further, the light source device also comprises a reflecting cover, wherein the reflecting cover is arranged between the first reflecting layer and the diffusion plate.

Further, the reflection cover comprises a plurality of reflection cups, and light emitting holes are formed in the bottoms of the reflection cups, so that the LED light sources are arranged in the light emitting holes.

Further, still include a plurality of supports, the one end gomphosis of support is in the lamp plate structure, the other end runs through the lamp plate structure is in order to support the diffuser plate.

Further, the optical film comprises a diffusion film, a fluorescent film, a lower brightness enhancement film and an upper brightness enhancement film which are sequentially connected in sequence, and the diffusion film is connected with the diffusion plate.

In a second aspect, the present invention also discloses a display device, which comprises a housing, a liquid crystal module, a main board, and the above-mentioned direct-type backlight module;

the liquid crystal module, the direct type backlight module and the mainboard are arranged in the shell, and the shell is provided with a window for exposing the liquid crystal module.

Further, the electronic function device is arranged in the shell.

To sum up, the utility model discloses a straight following formula backlight unit and display device have following technological effect:

the utility model provides a straight following formula backlight unit display device connects on the single-deck circuit layer through LED light source and conductive device to make conductive device connect the complete conductive path of formation with the single-deck circuit layer, can reduce the thickness of lamp plate structure, reduce the complexity of technology, reduce the processing operation, reduce manufacturing cost; the metal base layer is combined to accelerate heat dissipation, the overall heat dissipation effect is improved, and the optical effect is prevented from being influenced by thermal deformation of parts. The display equipment using the direct type backlight module can reduce the thickness and the weight and continuously has better display effect.

Other technical effects of the utility model point out in the specification in combination with specific structure.

Drawings

Fig. 1 is an exploded view of a direct type backlight module according to a first embodiment of the present invention;

fig. 2 is a schematic cross-sectional partial structure view of a direct type backlight module according to a first embodiment of the present invention;

FIG. 3 is an enlarged view of the portion A of FIG. 2;

fig. 4 is a schematic cross-sectional partial structure view of a direct type backlight module according to a second embodiment of the present invention;

fig. 5 is an enlarged view of a portion B of fig. 4.

Wherein the reference numerals have the following meanings:

1. a lamp panel structure; 11. a metal base layer; 12. an insulating layer; 13. a circuit layer; 14. a first reflective layer; 141. a through hole; 142. a cross opening; 15. an LED light source; 16. a conductive device; 17. a second reflective layer; 2. a reflector; 21. a reflective cup; 211. a light exit hole; 3. a diffusion plate; 4. an optical film; 5. a support; 51. a column block; 52. a frustum; 6. and a third reflective layer.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example one

Referring to fig. 1-3, the utility model discloses a direct type backlight module, which comprises a lamp panel structure 1, a diffusion plate 3 and an optical diaphragm 4 sequentially arranged in sequence; lamp plate structure 1 includes metal basic unit 11, insulating layer 12, circuit layer 13, first reflection stratum 14, a plurality of LED light sources 15 and a plurality of electrically conductive device 16, metal basic unit 11, insulating layer 12, circuit layer 13 and first reflection stratum 14 are connected in proper order, diffuser plate 3 sets up in the top of first reflection stratum 14, a plurality of LED light sources 15 all connect on circuit layer 13 with a plurality of electrically conductive device 16, and a plurality of LED light sources 15 pass first reflection stratum 14 to make metal basic unit 11 dispel the heat fast. The conductive device 16 is in accordance with the resistor packaging form, specifically, the conductive device can be a resistor, and the structure facilitates the lamp panel process assembly and the appearance attractiveness. The LED light source 15 and the conductive device 16 are connected to the single-layer circuit layer 13, so that the conductive device 16 connects the single-layer circuit layer 13 to form a complete conductive path, the thickness of the lamp panel structure 1 can be reduced, the complexity of the process is reduced, the processing operation is reduced, and the manufacturing cost is reduced; the arrangement of the metal base layer 11 is combined to accelerate heat dissipation, improve the overall heat dissipation effect and avoid the influence on the optical effect caused by the thermal deformation of parts.

In some embodiments, the metal base layer 11 is an aluminum base layer. The aluminum has certain strength and better heat-conducting property.

Referring to fig. 1, in some embodiments, the first reflective layer 14 is provided with a through hole 141 for accommodating the LED light source 15.

Referring again to fig. 1, in some embodiments, the first reflective layer 14 is further provided with a cross opening 142 corresponding to the position of the conductive device 16. The cross-shaped opening 142 is disposed over the conductive feature 16 so that the reflective layer conforms to the conductive feature 16 to prevent the emissive layer from bulging out of flatness at the location of the conductive feature 16.

Referring to fig. 2 and 3, in some embodiments, the surface of the conductive device 16 is provided with a second reflective layer 17 to prevent the conductive device 16 from affecting the brightness and uniformity of the emitted light.

In some embodiments, the optical film 4 includes a diffusion film, a fluorescent film, a lower brightness enhancement film, and an upper brightness enhancement film, which are sequentially connected in this order, and the diffusion film is connected to the diffusion plate 3.

Referring to fig. 1 and 2, in some embodiments, the backlight module further includes a reflective cover 2, and the reflective cover 2 is disposed between the first reflective layer 14 and the diffuser plate 3. The reflector 2 can improve the brightness of the emergent light and increase the uniformity of the brightness. The reflection cover 2 includes a plurality of reflection cups 21, and the bottom of the reflection cups 21 is provided with light exit holes 211 so that the LED light sources 15 are disposed in the light exit holes 211. The light-emitting hole 211 is larger than the LED light source 15, so that the LED light source 15 is prevented from being scraped off to influence the light emission when the reflector 2 deviates. In addition, the first reflective layer 14 is combined with the reflective cover 2, so that when the reflective cover 2 is deviated, the deviated position is not reflected, and the reflection effect is prevented from being influenced.

The utility model also discloses a display device, which comprises a shell, a liquid crystal module and a mainboard, and also comprises the direct type backlight module; the liquid crystal module, the direct type backlight module and the mainboard are arranged in the shell, and the shell is provided with a window exposing the liquid crystal module. The display equipment using the direct type backlight module can reduce the thickness and the weight and continuously has better display effect.

In some embodiments, further comprising an electronic function device disposed within the housing to increase the functionality of the display device. The electronic functional device comprises a loudspeaker, a wireless connection module, a cooling fan and the like.

Example two

Referring to fig. 4 and 5, the difference between the second embodiment and the first embodiment is that the reflector 2 is not provided, but a plurality of brackets 5 are provided, one end of each bracket 5 is embedded in the lamp panel structure 1, and the other end of each bracket 5 penetrates through the lamp panel structure 1 to support the diffuser plate 3. The support 5 is arranged to increase the light mixing distance without the reflector 2, so that the brightness of the emitted light is more uniform. The part of support 5 gomphosis in lamp plate structure 1 is cylindric lock 51, and the part that runs through lamp plate structure 1 is frustum 52, and frustum 52 surface sets up third reflection stratum 6, avoids frustum 52 to influence light-emitting luminance and homogeneity.

The technical means disclosed in the present invention is not limited to the technical means disclosed in the above embodiments, but also includes the technical solution formed by combining the above technical features at will. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims (10)

1. The utility model provides a straight following formula backlight unit which characterized in that, includes lamp plate structure (1), diffuser plate (3) and optical film piece (4) that set gradually in proper order, wherein:

lamp plate structure (1) includes metal basic unit (11), insulating layer (12), circuit layer (13), first reflection stratum (14), a plurality of LED light source (15) and a plurality of electrically conductive device (16), metal basic unit (11) insulating layer (12) circuit layer (13) with first reflection stratum (14) connect gradually in proper order, diffuser plate (3) set up the top of first reflection stratum (14), a plurality of LED light source (15) and a plurality of electrically conductive device (16) all connect in on circuit layer (13), so that electrically conductive device is single layer the circuit layer is connected and is formed complete conducting path.

2. A direct type backlight module according to claim 1, characterized in that the conductive device (16) is a resistor.

3. A direct type backlight module according to claim 2, characterized in that the metal base layer (11) is an aluminum base layer.

4. The direct type backlight module according to claim 2 or 3, wherein the first reflective layer (14) is provided with a through hole (141) for accommodating the LED light source (15).

5. A direct type backlight module according to claim 4, characterized in that the first reflective layer (14) is further provided with cross-shaped openings (142) corresponding to the positions of the conductive devices (16).

6. A direct type backlight module according to claim 5, further comprising a reflective cover (2), wherein the reflective cover (2) is disposed between the first reflective layer (14) and the diffuser plate (3).

7. A direct type backlight module according to claim 6, wherein the reflector (2) comprises a plurality of reflector cups (21), and the bottom of the reflector cups (21) are provided with light holes (211) so that the LED light sources (15) are disposed in the light holes (211).

8. The direct type backlight module according to claim 5, further comprising a plurality of brackets (5), wherein one end of each bracket (5) is embedded in the lamp panel structure (1), and the other end of each bracket (5) penetrates through the lamp panel structure (1) to support the diffuser plate (3).

9. The direct type backlight module according to any one of claims 6 to 8, wherein the optical film (4) comprises a diffuser film, a phosphor film, a lower light enhancement film and an upper light enhancement film sequentially connected in sequence, and the diffuser film is connected with the diffuser plate (3).

10. A display device comprising a housing, a liquid crystal module and a main board, further comprising a direct type backlight module according to any one of claims 1 to 9;

the liquid crystal module, the direct type backlight module and the mainboard are arranged in the shell, and the shell is provided with a window for exposing the liquid crystal module.

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