CN212365396U

CN212365396U - Direct type backlight device

Info

Publication number: CN212365396U
Application number: CN202020554251.5U
Authority: CN
Inventors: 张小齐; 黄小芸; 于佳琳
Original assignee: Shenzhen Longli Technology Co Ltd
Current assignee: Shenzhen Longli Technology Co Ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2021-01-15
Anticipated expiration: 2030-04-15

Abstract

The utility model discloses a straight following formula backlight device, this straight following formula backlight device include the array and the glass drive plate of the optical film group that top-down set up, LED light source. The glass driving plates have a splicing structure so that adjacent glass driving plates are connected by splicing. The splicing structure accommodates a drive circuit that runs through the glass drive plate. The utility model provides a straight following formula backlight device, it can realize that the concatenation is backlight.

Description

Direct type backlight device

Technical Field

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

Background

The Mini-LED chip is driven by a Printed Circuit Board (PCB for short) to be lighted. When signal wiring is prepared on a PCB, a multilayer design is often adopted and is limited by the influence of factors such as low dry film resolution, large dry film thickness, large copper thickness, low precision of exposure and etching equipment and the like, so that the line width of the formed signal wiring is large (the minimum line width capable of being subjected to mass production is about 85 microns), and the size of an LED chip required to be matched with the signal wiring is large; in addition, signal routing lines need to be arranged between some adjacent LEDs, and the line width of the configured signal routing lines is large, which also results in a large distance between the adjacent LED chips. The substrate material that is arranged as bearing chip at present mainly is soft FPC circuit board or stereoplasm PCB circuit board, all has very obvious defect: limiting the limiting width of the line arrangement; the circuit has large deformation and thickness and is difficult to assemble and position;

because the traditional LED display screen uses the PCB, the PCB can design the display drive on the back of the PCB through counter bores, via holes and other ways, and the design has no influence on both the in-box splicing and the inter-box splicing. Because the TFT display drive circuit is usually arranged on one side of the display area, the TFT display drive circuit and a TFT-based glass substrate process are not beneficial to leading the display drive circuit to the back, and the TFT display drive circuit is usually applied to micro-display of televisions, computers and the like in the field, and the display effect is hardly influenced by gaps during splicing.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a straight following formula backlight device, can realize that the concatenation is backlight.

In order to solve the technical problem, the utility model discloses a technical scheme be provide a straight following formula backlight device, this straight following formula backlight device includes the array and the glass drive plate of the optical film group, the LED light source that top-down set up. The glass driving plates are provided with splicing structures, so that the adjacent glass driving plates are connected through splicing. The splicing structure accommodates a driving circuit penetrating through the glass driving plate.

The utility model discloses a glass drive plate replaces the PCB circuit board, and adjacent glass drive plate splices through mosaic structure. And in the adjacent glass drive plates, a drive circuit penetrates through the glass drive plates in a mode of etching the splicing structure, and the circuit on the upper surface of each glass drive plate is led to the lower surface of each glass drive plate. The glass driving board is used for controlling the LED light source to emit light, so that the LED display screen is spliced, the cost advantage is achieved, and meanwhile, the display effect can be improved.

In a preferred embodiment, the adjacent splicing structures are bonded by conductive anisotropic glue or self-gathering solder paste welding.

In a preferred embodiment, the splicing structure is a wave-shaped structure, a U-shaped structure, a V-shaped structure or a high-low step structure.

In a preferred embodiment, the surface of the glass driving plate is provided with an insulating layer to insulate and isolate the driving circuit; the glass drive plate is also provided with a reflecting layer. The reflecting layer comprises diffusion particles, and the diffusion particles comprise at least one particle of SiO2, TiO2, Au, Ag, Al, Cu, Zn, Pt, Co, Ni, Cu2O, CuO, CdO, ZnO and glass fiber.

In a preferred embodiment, the LED lamp further comprises an open-pore reflecting film arranged between the optical film group and the LED light source; the reflecting cup is a sphere or polyhedron with an upper opening and a lower opening; the plurality of reflection cups are integrally formed into a reflection plate.

In a preferred embodiment, the optical film includes a diffusion film, and a prism sheet disposed over the diffusion film.

In a preferred embodiment, the optical film further comprises a quantum dot film.

Drawings

The invention and its advantages will be better understood by studying the following non-limiting examples, and by studying the detailed description of specific embodiments shown in the appended drawings, in which:

fig. 1 is an exploded view of a direct type backlight device according to embodiment 1 of the present invention.

Fig. 2 is a view of a combination structure of an array of LED light sources and a glass drive board according to embodiment 1 of the present invention.

Detailed Description

Referring to the drawings, wherein like reference numbers refer to like elements throughout, the principles of the present invention are illustrated as being implemented in a suitable environment. The following description is based on illustrated embodiments of the invention and should not be taken as limiting the invention with regard to other embodiments not described in detail herein.

The word "embodiment" is used herein to mean serving as an example, instance, or illustration. In addition, the articles "a" and "an" as used in this specification and the appended claims may generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Further, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise direct contact of the first and second features through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

With reference to fig. 1-2, a direct type backlight device according to an embodiment of the present invention is shown. The direct type backlight device comprises an optical film group 101, an array 102 of LED light sources and a glass driving plate 103 which are arranged from top to bottom. The glass driving plates 103 have a splicing structure such that adjacent glass driving plates 103 are connected by splicing. The splicing structure accommodates a drive line that runs through the glass drive plate 103.

The utility model discloses a glass drive plate 103 replaces the PCB circuit board, and adjacent glass drive plate 103 splices through mosaic structure. In the adjacent glass driving plate 103, a driving circuit penetrates through the glass driving plate 103 by etching the splicing structure, and the circuit on the upper surface of the glass driving plate 103 is led to the lower surface of the glass driving plate 103. The glass driving board 103 is used for controlling the LED light source to emit light, so that the LED display screen is spliced, the cost advantage is achieved, and meanwhile, the display effect can be improved.

And adjacent splicing structures are bonded by conductive anisotropic glue or welded by self-polymerization solder paste.

The splicing structure is a continuous wave-shaped structure.

An insulating layer is arranged on the surface of the glass driving plate 103 to insulate and isolate the driving circuit; the glass driving plate 103 is further provided with a reflective layer. The reflective layer includes diffusing particles including SiO 2.

The optical film comprises a diffusion film and a prism sheet arranged above the diffusion film.

While the invention has been described above with reference to certain embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the various embodiments disclosed herein can be used in any combination with one another, and the description of such combinations is not exhaustive for reasons of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. A direct type backlight device, comprising:

the LED light source comprises an optical diaphragm group, an array of LED light sources and a glass driving board which are arranged from top to bottom;

the glass driving plates are provided with splicing structures, so that the adjacent glass driving plates are connected through splicing;

the splicing structure accommodates a driving circuit penetrating through the glass driving plate.

2. The direct type backlight device according to claim 1, wherein a driving wire is penetrated through the glass driving board by etching the spliced structure.

3. The direct type backlight device according to claim 1, wherein adjacent mosaic structures are bonded by conductive anisotropic glue or self-gathering solder paste.

4. The direct type backlight device according to claim 1, wherein the splicing structure is a wave structure, a U-shaped structure, a V-shaped structure or a high-low step structure.

5. The direct type backlight device according to claim 1, wherein the surface of the glass driving board is provided with an insulating layer to insulate and isolate the driving lines; the glass drive plate is also provided with a reflecting layer.

6. A direct type backlight device according to claim 5, wherein the reflection layer includes diffusing particles.

7. The direct type backlight device according to claim 1, further comprising an apertured reflective film disposed between the optical film group and the LED light source.

8. A direct type backlight device according to claim 1, wherein the optical film comprises a diffusion film, and a prism sheet disposed above the diffusion film.

9. A direct type backlight device according to claim 1, wherein: the optical film further includes a quantum dot film.