CN210864278U

CN210864278U - Direct type backlight module light source structure

Info

Publication number: CN210864278U
Application number: CN201922270778.5U
Authority: CN
Inventors: 李秀富
Original assignee: Suzhou Dongyan Electronic Technology Co ltd
Current assignee: Yanheng Dongshan Precision Manufacturing Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-06-26
Anticipated expiration: 2029-12-17

Abstract

The utility model discloses a straight following formula backlight unit light source structure, including backplate, end lamp strip, limit lamp strip and diffusion piece, backplate edge bending, the middle part is flat, and the flat position in backplate middle part is installed to the end lamp strip, and the limit lamp strip is installed at the backplate edge, and the base plate of limit lamp strip adopts the FPC soft board, and the particle density on the limit lamp strip is greater than the particle density on the end lamp strip, and the input current of limit lamp strip is less than the input current of end lamp strip, and the backplate edge can set up thinly according to the demand, and can not influence the display effect.

Description

Direct type backlight module light source structure

Technical Field

The utility model relates to a show relevant technical field, more accurate saying so relates to a straight following formula backlight unit light source structure.

Background

The backlight module of the display device can be divided into a direct type backlight module and a side type backlight module according to different light incidence modes. The direct type backlight module adopts LED light sources to make an intensive dot matrix, is placed at the back of the screen and directly irradiates the screen; the side-in backlight module places the LED light source on the side of the screen, guides light to the screen through the light guide plate, and lights the back of the whole screen. The display device adopting the direct type structure has natural advantages in the aspect of realizing image quality effect, but the direct type backlight module is difficult to be thinned due to the structure of the direct type backlight module. At present, the market demands for the display device products to have good appearance and high image quality, and consumers generally prefer a thin-appearance and clear-image liquid crystal television. The light source part of the existing direct type backlight module is shown in fig. 1, a concave plane is arranged in a back plate 1, a plurality of light bars 2 which are uniformly arranged are arranged on the plane, and a diffusion sheet 5 is arranged in the back plate 1 and is parallel to the light bars 2. The light bar 2 comprises a substrate 3 and a plurality of particles 4 positioned on the substrate 3, and the substrate 3 is a hard plate. By adopting the light source structure in the form, in order to ensure the display effect of the edge of the screen, the edge of the back plate 1 cannot be designed into a thin form, so that the whole display device is thick, and the appearance is influenced. In view of the above, there is a need in the art for a direct-type backlight module light source structure that can achieve edge thinning and improve the aesthetic property of a display device while ensuring the display effect of the display device.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a main aim at provides a straight following formula backlight unit light source structure, including backplate, end lamp strip, limit lamp strip and diffusion piece, backplate edge bending, the middle part is flat, and the end lamp strip is installed at backplate middle part flat position, and the limit lamp strip is installed at the backplate edge, and the base plate of limit lamp strip adopts the FPC soft board, and the particle density on the limit lamp strip is greater than the particle density on the end lamp strip, and the input current of limit lamp strip is less than the input current of end lamp strip, and the backplate edge can be according to the demand setting thinner.

In order to achieve the above object, the present invention provides a direct type backlight module light source structure, which comprises a back plate, a plurality of bottom light bars, a plurality of side light bars and a diffusion sheet, wherein the edge of the back plate is curved, and the middle part of the back plate is flat; the bottom lamp strips are arranged in the flat middle of the back plate and are uniformly distributed; the side lamp strips are arranged on the bent edge of the back plate, and the bending degree of the side lamp strips is the same as that of the edge of the back plate; the diffusion sheet is parallel to the bottom light strips and is connected with the back plate.

Preferably, the bottom light bar and the side light bar are respectively driven by two currents, and the input current of the side light bar is smaller than that of the bottom light bar.

Preferably, the bottom light bar comprises a bottom substrate and a plurality of bottom particles, the bottom particles are uniformly arranged on the bottom substrate, and the bottom substrate is a hard plate.

Preferably, the edge light bar comprises an edge substrate and a plurality of edge particles, the edge particles are sequentially arranged on the edge substrate, and the distance between every two edge particles is smaller along the direction far away from the bottom light bar.

Preferably, the distance between the edge particles is smaller than the distance between the bottom particles.

Preferably, the edge substrate is an FPC (flexible printed circuit) flexible board.

Preferably, the base substrate and the side substrate are fixedly connected through a connector.

Preferably, the base substrate and the side substrate are bonded and connected by means of thermocompression bonding.

Compared with the prior art, the utility model discloses a straight following formula backlight unit light source structure's advantage lies in: the edge of the back plate is thinned under the condition of not influencing the display effect, so that the back plate is more attractive.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a light source structure of a direct-type backlight module in the prior art.

Fig. 2 is a schematic view of a light source structure of a direct-type backlight module according to the present invention.

Detailed Description

As shown in fig. 2, the light source structure of a direct-type backlight module of the present invention includes a back plate 10, a plurality of bottom light bars 21, a plurality of side light bars 22, and a diffusion sheet 30. The back plate 10 has curved edges and a flat middle. The bottom light bars 21 are arranged in the flat middle of the back plate 10, and the bottom light bars 21 are uniformly distributed. The side light bars 22 are mounted at the bent edge of the backboard 10, and the bent edge is the same as the bent edge of the backboard 10. The diffusion sheet 30 is connected to the back plate 10 in parallel with the bottom light bar 21. The aligned bottom light bar 21 and the side light bar 22 are connected to each other. Since the side light bars 22 are closer to the diffusion sheet 30 than the bottom light bar 21, in order to ensure uniformity of display, the brightness of the side light bars 22 needs to be set to be less than that of the bottom light bar 21. Therefore, the bottom light bar 21 and the side light bar 22 are respectively driven by two currents, and the input current of the side light bar 22 is smaller than that of the bottom light bar 21.

Specifically, the bottom light bar 21 includes a bottom substrate 211 and a plurality of bottom particles 212, the bottom particles 212 are uniformly arranged on the bottom substrate 211, and the bottom substrate 211 is a hard plate. The side light bar 22 includes a side substrate 221 and a plurality of side particles 222, the side particles 222 are sequentially arranged on the side substrate 221, and the distance between every two side particles 222 is smaller along the direction away from the bottom light bar 21. The distance between the edge particles 222 is smaller than the distance between the bottom particles 212. The edge substrate 221 is a Flexible Printed Circuit (FPC) board, and can be conveniently bent to adapt to the bent shape of the edge of the back plate 10. The base substrate 211 and the side substrate 221 are fixedly connected through a connector, and the base substrate 211 and the side substrate 221 can be connected in a bonding manner through a hot-press welding manner.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A direct type backlight module light source structure is characterized by comprising a back plate, a plurality of bottom light bars, a plurality of side light bars and a diffusion sheet, wherein the edge of the back plate is bent, and the middle part of the back plate is flat; the bottom lamp strips are arranged in the flat middle of the back plate and are uniformly distributed; the side lamp strips are arranged on the bent edge of the back plate, and the bending degree of the side lamp strips is the same as that of the edge of the back plate; the diffusion sheet is parallel to the bottom light strips and is connected with the back plate.

2. The direct type backlight module light source structure of claim 1, wherein the bottom light bar and the side light bars are driven by two currents respectively, and the input current of the side light bars is smaller than that of the bottom light bar.

3. The light source structure of claim 1, wherein the bottom light bar comprises a bottom substrate and a plurality of bottom particles, the bottom particles are uniformly distributed on the bottom substrate, and the bottom substrate is a rigid plate.

4. The light source structure of claim 3, wherein the edge strip comprises an edge substrate and a plurality of edge particles, the edge particles are sequentially arranged on the edge substrate, and the distance between every two edge particles is smaller along a direction away from the bottom strip.

5. The direct type backlight module light source structure of claim 4, wherein the distance between the edge particles is smaller than the distance between the bottom particles.

6. The direct type backlight module light source structure of claim 4, wherein the edge substrate is FPC flexible board.

7. The direct type backlight module light source structure of claim 4, wherein the bottom substrate and the edge substrate are connected and fixed by a connector.

8. The light source structure of direct type backlight module according to claim 4, wherein the bottom substrate and the edge substrate are bonded by thermocompression bonding.