CN209728380U - Back light module unit structure for automated production - Google Patents

Abstract

The utility model discloses a kind of back light module unit structures for automated production, including backboard, reflector plate, light guide plate, lamp bar, diaphragm and panel, the incident side of backboard is in 90 ° of bendings and accommodating space is formed in the middle part of backboard, reflector plate, light guide plate, diaphragm and panel are sequentially arranged at from the bottom up in the accommodating space of backboard, there are gap and as mounting groove between the incident side edge and backboard bending part of light guide plate, lamp bar includes substrate and the one side for being mounted on the substrate and equally distributed lamp bead, substrate-parallel is in backboard bottom surface, lamp bead is towards backboard bottom surface and is located in mounting groove, the base plan of lamp bead two sides passes through the bending part of lamp bar fixation adhesive tape and backboard respectively and light guide plate edge is adhesively fixed, panel incident side edge is fixed with substrate bonding.The utility model back light module unit structure in the case where guaranteeing structural strength and incident side function, still can be suitably used for automatic assembling production line, improve product installation accuracy, meet the market demand, product is able to achieve thinner.

Description

Backlight module structure for automated production

technical field

The utility model belongs to the technical field of backlight modules, and in particular relates to a backlight module structure for automatic production.

Background technique

As a display component of an electronic device, a liquid crystal display device has been widely used in various electronic products, and a backlight module is an important part of the liquid crystal display device. Backlight modules are divided into side-type backlight modules and direct-type backlight modules according to the location of the light source. Among them, the side-in type backlight module is to install the LED light bar on the backlight edge of the display panel. The light is emitted from the light emitting surface, and then passes through the optical film to form a surface light source for the display panel.

The existing backlight module design can only be assembled manually. Its structure is shown in Figure 3. Especially for the installation on the light incident side, it is necessary to first assemble the light bar and the light bar shading tape into the U-folded backplane. The corners of the U-fold are not easy to process and install. With the application of production line automation technology and customers' higher and higher requirements for assembly precision, the existing U-fold design of backlight modules can no longer meet the needs of automated production lines. In the actual assembly process, manual assembly is prone to various defects such as poor assembly, low product yield, low production capacity, and low product manufacturing accuracy, which can no longer meet the needs of the market.

Utility model content

In order to solve the above technical problems, the purpose of this utility model is to provide a backlight module structure for automatic production, which can still be applied to automatic assembly production lines under the condition of ensuring the structural strength and light-incident side functions, and improves product installation accuracy. to satisfy the market's needs.

The utility model purpose is achieved in that:

A backlight module structure for automatic production, the key of which is to include a backplane, a reflector, a light guide plate, a light bar, a film and a panel, the light incident side of the backplane is bent at 90° and The middle part of the plate forms an accommodating space, and the reflector, the light guide plate, the diaphragm and the panel are sequentially installed in the accommodating space of the back plate from bottom to top, and the light-incident side edge of the light guide plate is in contact with the back plate There are gaps between the bent parts and serve as installation grooves. The light bar includes a base plate and lamp beads installed on one side of the base plate and evenly distributed. The base plate is parallel to the bottom surface of the back plate, and the light beads face the back plate. The bottom surface is located in the installation groove, and the substrate planes on both sides of the lamp bead are respectively bonded and fixed to the bending part of the back panel and the edge of the light guide plate through the light strip fixing tape, and the light incident side of the panel is Adhesively fixed with the substrate.

With the above structure, the lamp beads of the light bar are set downwards and supported by the base plate, which can completely replace the U-folding function of the original back plate. The back plate only needs to be bent at 90° to form an accommodation space, and the base plate can also play Due to the light-shielding function, the inner side of the U-fold of the original backplane is inconvenient to process, and only light-shielding tape can be installed, but the surface of the substrate in this structure is easy to process, so there is no need to install light-shielding tape on the downward side of the substrate; most importantly, The structure can be directly fixed and installed vertically to the backplane during installation, and there is no corner that is difficult to install, and is suitable for positioning and installation in automated production lines.

Preferably, the light-incident side of the above-mentioned panel is bonded and fixed to the substrate by a light-shielding tape.

With the above structure, the panel and the light strip itself need to be fixed with adhesive tape, and the use of light-shielding tape can further shield the bonding part between the panel and the light strip, without increasing the tape and tape installation process, and reducing the thickness of the product. Thinner products can be achieved.

Preferably, the above-mentioned light-shielding tape extends out of the substrate toward the side of the middle of the back plate and is bonded to the edge of the film.

With the above structure, the light-shielding tape can solve the problem of light leakage between the film and the substrate.

Preferably, the light-incident side edge of the reflective sheet extends to the corner of the bent portion of the back plate.

By adopting the above structure, the reflective sheet has a wider receiving surface for the light source, which can play a role of increasing brightness to a certain extent.

Preferably, the upper surface of the light guide plate is coplanar with the top edge of the bent portion of the back plate.

By adopting the above structure, the parallelism of substrate installation can be ensured, and the installation accuracy can be further improved.

Preferably, a white coating is provided on the surface where the substrate and the light guide plate are bonded, and the adhesive tape of the bonding part is transparent tape.

With the above-mentioned structure, adding a white coating on the substrate can further enhance the reflection of light and enhance the effect of shading. There is no need to install a shading tape on this surface, thereby reducing the difficulty of installation and reducing the thickness of the product.

Beneficial effect:

The utility model is a backlight module structure for automatic production, which can still be applied to an automatic assembly production line while ensuring the structural strength and light-incident side function, improves product installation accuracy, meets market demand, and can achieve thinner products.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is an enlarged view of A in Figure 1;

FIG. 3 is a schematic structural view of the light-incident side of the backlight module in the prior art;

Among them, 1 is the back plate, 2 is the reflector, 3 is the light guide plate, 4 is the light strip, 4a is the substrate, 4b is the lamp bead, 5 is the diaphragm, 6 is the panel, 7 is the shading tape, 8 is the white coating, 9 is an adhesive tape.

Detailed ways

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, only It is for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model.

Below in conjunction with embodiment and accompanying drawing, the utility model is further described.

Example:

A backlight module structure for automatic production, which is composed of a backplane 1, a reflector 2, a light guide plate 3, a light strip 4, a diaphragm 5 and a panel 6, and the light incident side of the backplane 1 is bent at 90° Bend and form an accommodation space in the middle of the backplane 1, the reflector 2, light guide plate 3, membrane 5 and panel 6 are sequentially installed in the accommodation space of the backplane 1 from bottom to top, the reflection sheet The light incident side edge of 2 extends to the corner of the bent part of the backplane 1, and there is a gap between the light incident side edge of the light guide plate 3 and the bent part of the backplane 1 as a mounting groove, so The light bar 4 includes a base plate 4a and lamp beads 4b installed on one side of the base plate 4a and evenly distributed, the upper surface of the light guide plate 3 is coplanar with the top edge of the bent portion of the back plate 1, and the base plate 4a Installed parallel to the bottom surface of the back panel 1, the lamp bead 4b faces the bottom surface of the back panel 1 and is located in the installation groove. The bent part of the plate 1 is bonded to the edge of the light guide plate 3, and the surface where the substrate 4a is bonded to the light guide plate 3 is provided with a white coating 8, and the adhesive tape 9 of the bonding part is a transparent tape. The light-incident side of the panel 6 is bonded and fixed to the substrate 4a by a light-shielding tape 7, and the light-shielding tape 7 extends out of the substrate 4a toward the middle of the backplane 1 and is connected to the edge of the diaphragm 5. bonding.

Finally, it should be noted that the above description is only a preferred embodiment of the utility model, and those of ordinary skill in the art can make A variety of similar representations are given, and such transformations all fall within the protection scope of the present utility model.

Claims (6)

1. A backlight module structure for automated production, characterized in that it includes a backplane (1), a reflector (2), a light guide plate (3), a light bar (4), a diaphragm (5) and a panel (6), the light incident side of the backboard (1) is bent at 90° and forms an accommodating space in the middle of the backboard (1), the reflector (2), light guide plate (3), diaphragm ( 5) and the panel (6) are sequentially installed in the accommodating space of the backplane (1) from bottom to top, and the light-incident side edge of the light guide plate (3) is in contact with the bent portion of the backplane (1). There are gaps between them and serve as installation grooves. The light bar (4) includes a substrate (4a) and lamp beads (4b) installed on one side of the substrate (4a) and evenly distributed. The substrate (4a) is parallel to the back the bottom surface of the board (1), the lamp bead (4b) faces the bottom surface of the back plate (1) and is located in the installation groove, and the planes of the substrate (4a) on both sides of the lamp bead (4b) pass through the light bar ( 4) The fixing tape is bonded and fixed to the bent portion of the back plate (1) and the edge of the light guide plate (3), and the light incident side of the panel (6) is bonded and fixed to the substrate (4a). 2. A backlight module structure for automatic production according to claim 1, characterized in that: the light-incident side of the panel (6) is glued to the substrate (4a) by a light-shielding tape (7) then fixed. 3. A backlight module structure for automatic production according to claim 2, characterized in that: the light-shielding tape (7) extends out of the base plate (4a) towards one side of the middle of the back plate (1) And bond with the edge of the diaphragm (5). 4. A backlight module structure for automatic production according to claim 1, 2 or 3, characterized in that: the light-incident side of the reflector (2) extends to the backplane (1 ) at the corner of the bend. 5. A backlight module structure for automatic production according to claim 1, 2 or 3, characterized in that: the upper surface of the light guide plate (3) and the bent portion of the back plate (1) The top edges of the are coplanar. 6. A backlight module structure for automatic production according to claim 1, 2 or 3, characterized in that: the surface where the substrate (4a) is bonded to the light guide plate (3) is provided with a white coating Layer (8), the adhesive tape (9) of the bonding portion is transparent tape.