CN114325922A - Non-rectangular display backlight module and manufacturing method thereof - Google Patents

Abstract

The invention provides a non-rectangular display backlight module and a manufacturing method, comprising an LED light source, a light guide plate and a reflector, the LED light source is electrically connected to an FPC circuit board, a diffusion film and a light enhancement plate are arranged in front of the light guide plate, and the LED light source surrounds the light guide plate Do a non-rectangular display; use a non-rectangular light guide plate, the LED light source is welded and fixed on the FPC flexible circuit board, the optical mesh points of the light guide plate are arranged in a plurality of rectangular shapes, and local optical processing is performed to achieve the above The LED light source is exported, the diffuser film and the light-enhancing plate are installed in front of the light guide plate, and the whole is fastened and assembled with a plastic frame.

Description

A kind of non-rectangular display backlight module and manufacturing method

technical field

The present invention relates to the technical field of backlight sources, and more particularly to a non-rectangular display backlight module and a manufacturing method.

Background technique

Since modern times, most of the original vehicle-mounted backlights are rectangular in shape and display area, and have great limitations, especially for vehicle-mounted backlights. For automotive interior design, the shape layout design of the center console and the display area of the instrument will also be Restricted and cannot achieve beautiful and cool effects. The production process is troublesome and the light guiding effect is not good.

At present, there are also existing technical solutions that the rectangular display viewing area is changed to a circular viewing area, and the shape is also synchronously circular. The light guide plate of the backlight is circular, and the incident LEDs are arranged in a ring around the light guide plate. The optical effect of the circular light guide plate is very different from the rectangular light guide plate with light incident on the same side. Therefore, the production methods are different, and the production is troublesome. The light guiding optical effect of the rectangular backlight module has low installation production efficiency and high cost.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a non-rectangular display backlight module and a manufacturing method. A non-rectangular light guide plate is used, the LED light source is welded and fixed on the FPC flexible circuit board, and the optical dots of the light guide plate are provided with a plurality of rectangular light guide plates. The shape is arranged and local optical treatment is performed to export the LED light source. The diffuser film and the light-enhancing plate are installed in front of the light guide plate, and the whole is fastened and fixed with a plastic frame.

In order to solve the above technical problems, the present invention provides a non-rectangular display backlight module and a manufacturing method, including an LED light source, a light guide plate and a light reflector, the LED light source is electrically connected to the FPC circuit board, and a diffuser is arranged in front of the light guide plate A film and a brightening plate, the LED light sources are displayed in a non-rectangular arrangement around the light guide plate;

The manufacturing method of the non-rectangular display backlight module is as follows:

S01, welding and fixing the LED light source on the FPC circuit board;

S02, coating the FPC circuit board with thermally conductive glue, and fixing it on the backlight board with double-sided tape;

S03, making a non-rectangular arrangement and fixing of the FPC circuit board around the light guide plate;

S04. The optical mesh points of the light guide plate are arranged in a plurality of rectangular shapes, and local optical processing is performed to export the LED light source to the diffusion film;

S05, aligning the light-emitting direction of the LED light source with the optical mesh point of the light guide plate;

S06, the surface of the diffusion film is in close contact with the light-enhancing plate to increase the brightness of the LED light source;

S07, the above fixed frames are sequentially fixed into the non-rectangular display backlight module;

S08, repeating the above is the manufacturing method of the non-rectangular display backlight module.

In a further solution, the FPC circuit board is a PCB circuit board of flexible copper sheets.

A further solution is that the lower surface of the brightness enhancement plate is covered with a brightness enhancement film, and the upper surface of the brightness enhancement plate is attached with a DBEF enhancement film.

A further solution is that the shape of the optical dots of the LED light guide plate is matched with the arrangement of the LED light sources, and local processing is performed to achieve the optical light guide direction, light efficiency and brightness.

In a further solution, the reflector is an aluminum back plate.

In a further solution, the fixed frame is a plastic frame.

In a further solution, the outer shape of the plastic frame and the provided buckle position are used for fixing the non-rectangular display backlight module.

In a further solution, the plastic frame is provided with an empty groove, and the LED light source is fixed in the empty groove.

In a further solution, screw holes are provided on the side of the plastic frame, and the light guide plate is positioned and fixed with screws.

A further solution is that the optical dots are arranged and laid out, and dotted by dot dotting equipment to shape the light guide plate.

The beneficial effects of the present invention compared with the prior art are:

1. The LED light source is arranged in the most favorable optical processing through the backlight shape structure and the actual shape structure of the light guide plate.

2. According to the LED layout, the optical network of the light guide plate is laid out, and the optics are processed to achieve the maximum light effect and increase the bright spots.

A non-rectangular light guide plate is used, and the LED light source is welded and fixed on the FPC flexible circuit board. The optical mesh points of the light guide plate are arranged in a plurality of rectangular shapes, and local optical processing is performed to export the LED light source and the front of the light guide plate. Install the diffuser film and the light-enhancing plate, and use the plastic frame to fasten and assemble the whole. The LED has high light export efficiency and high production efficiency. It solves the optical processing problem of the circular light guide plate in the case of annular LED arrangement, and solves the problem of forming the light guide plate. The layout of the dots and the structural fixation of the light guide plate and film material inside the backlight, the purpose of the rectangular display backlight (shaped or round) is to make the design and layout of the interior of the car more flexible, and the center console and instruments are more beautiful and technological. .

Description of drawings

Fig. 1 is the exploded structure schematic diagram of the specific embodiment of the present invention;

2 is a schematic structural diagram of an optical mesh point of a light guide plate according to a specific embodiment of the present invention;

FIG. 3 is an assembly schematic diagram of a specific embodiment of the present invention.

reference number

1. Plastic frame; 2. DBEF brightening film; 3. Upper brightening plate; 4. Lower brightening film; 5. Diffuser film; 6. Light guide plate; 7. LED light source; 8. FPC; 9. FPC thermal conductive adhesive; 10. Double-sided tape; 11. Aluminum back plate; 12. Optical dots; 13. Empty slot; 14. Buckle position; 15. Screw.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in FIG. 1 to FIG. 3 , a specific embodiment of the present invention, a non-rectangular display backlight module and a manufacturing method, includes an LED light source, a light guide plate and a reflector, the LED light source is electrically connected to the FPC circuit board, and the front of the light guide plate is Equipped with a diffuser film and a light-enhancing plate, and the LED light source is displayed in a non-rectangular arrangement around the light guide plate;

The manufacturing method of the non-rectangular display backlight module is as follows:

S01. Welding and fixing the LED light source on the FPC circuit board;

S02. Coat the FPC circuit board with thermally conductive adhesive, and fix it on the backlight board with double-sided tape;

S03, make a non-rectangular arrangement and fix the FPC circuit board around the light guide plate;

S04. The optical mesh points of the light guide plate are arranged in a plurality of rectangular shapes, and local optical processing is performed to export the LED light source to the diffusion film;

S05, align the light-emitting direction of the LED light source with the optical mesh point of the light guide plate;

S06. The surface of the diffusion film is close to the light-enhancing plate to increase the brightness of the LED light source;

S07, the above fixed frames are sequentially fixed into a non-rectangular display backlight module;

S08, repeating the above is the manufacturing method of the non-rectangular display backlight module.

Further, the FPC circuit board is a PCB circuit board of flexible copper sheets.

Further, the lower surface of the light-enhancing plate is covered with a light-enhancing film, and the upper surface thereof is covered with a DBEF light-enhancing film.

Further, the shape of the optical dots of the LED light guide plate is matched with the arrangement of the LED light source, and local processing is performed to achieve the optical light guide direction, light effect and brightness.

Further, the reflector is an aluminum back plate.

Further, the fixed frame is a plastic frame.

Further, the shape of the plastic frame is provided with buckles for fixing the non-rectangular display backlight module.

Further, the plastic frame is provided with an empty groove, and the LED light source is fixed in the empty groove.

Further, the side of the plastic frame is provided with screw holes, and the light guide plate is positioned and fixed with screws.

Further, the non-rectangular display backlight module is an optical treatment of a special-shaped light guide plate. According to the optical network dot arrangement of the light guide plate, the light guide plate is shaped by a dot-dotting device.

The present invention has the following advantages:

1. The LED light source is arranged in the most favorable optical processing through the backlight shape structure and the actual shape structure of the light guide plate.

2. According to the LED layout, the optical network of the light guide plate is laid out, and the optics are processed to achieve the maximum light effect and increase the bright spots.

A non-rectangular light guide plate is used, and the LED light source is welded and fixed on the FPC flexible circuit board. The optical mesh points of the light guide plate are arranged in a plurality of rectangular shapes, and local optical processing is performed to export the LED light source, and the diffuser is installed in front of the light guide plate. The film and the brightening plate are fastened and assembled with a plastic frame as a whole. The LED has high light output efficiency and high production efficiency. It solves the optical processing problem of the circular light guide plate in the case of annular LED arrangement, and solves the dot layout of the light guide plate forming. The purpose of the rectangular display backlight (shaped or round) is to make the design and layout of the interior of the car more flexible, and the center console and instrumentation are more beautiful and technological.

The above are only the preferred embodiments of this patent, and do not limit the scope of this patent. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings, which are directly or indirectly used in other related technical fields, belong to this patent. protected range.

Claims (10)

1. a non-rectangular display backlight module and a manufacturing method, it is characterized in that, comprise LED light source, light guide plate and reflector, described LED light source is electrically connected with FPC circuit board, and the front of described light guide plate is provided with diffusing film and brightening The LED light source is displayed in a non-rectangular arrangement around the light guide plate; The manufacturing method of the non-rectangular display backlight module is as follows: S01, welding and fixing the LED light source on the FPC circuit board; S02, coating the FPC circuit board with thermally conductive glue, and fixing it on the backlight board with double-sided tape; S03, making a non-rectangular arrangement and fixing of the FPC circuit board around the light guide plate; S04. The optical mesh points of the light guide plate are arranged in a plurality of rectangular shapes, and local optical processing is performed to export the LED light source to the diffusion film; S05, aligning the light-emitting direction of the LED light source with the optical mesh point of the light guide plate; S06, the surface of the diffusion film is in close contact with the light-enhancing plate to increase the brightness of the LED light source; S07, the above fixed frames are sequentially fixed into the non-rectangular display backlight module; S08, repeating the above is the manufacturing method of the non-rectangular display backlight module. 2 . The non-rectangular display backlight module and the manufacturing method according to claim 1 , wherein the FPC circuit board is a PCB circuit board of a flexible copper sheet. 3 . 3 . The non-rectangular display backlight module and the manufacturing method as claimed in claim 1 , wherein the brightness enhancement plate comprises a lower surface with a lower brightness enhancement film, and its upper surface with a DBEF brightness enhancement film. 4 . 4. The non-rectangular display backlight module and the manufacturing method according to claim 1, wherein the shape of the optical dots of the LED light guide plate is matched with the arrangement of the LED light source, and local processing is performed to achieve the optical light guide direction, light effect and brightness. 5 . The non-rectangular display backlight module and the manufacturing method according to claim 1 , wherein the reflector is an aluminum back plate. 6 . 6 . The non-rectangular display backlight module and the manufacturing method according to claim 1 , wherein the fixing frame is a plastic frame. 7 . 7 . The non-rectangular display backlight module and the manufacturing method as claimed in claim 6 , wherein the shape of the plastic frame and the provided buckle position are used for fixing the non-rectangular display backlight module. 8 . 8 . The non-rectangular display backlight module and the manufacturing method as claimed in claim 6 , wherein the plastic frame is provided with a hollow slot, and the hollow slot fixes the LED light source. 9 . 9 . The non-rectangular display backlight module and the manufacturing method according to claim 1 , wherein screw holes are provided on the side of the plastic frame, and the light guide plate is positioned and fixed by screws. 10 . 10 . The non-rectangular display backlight module and the manufacturing method according to claim 1 , wherein the optical screen dots are arranged and laid out, and are dotted by dot dot dotting equipment to shape the light guide plate. 11 .

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