CN202049306U - Fixing structure for liquid crystal display device - Google Patents

Abstract

The utility model discloses a fixing structure for a liquid crystal display device. The fixing structure comprises bends arranged on a back plate, and sub-bend structures, so as to realize fixing of a liquid crystal display. The bends and/or the sub-bends are at least arranged on two edges of the back plate, and are at least in U shape or L shape. The sub-bends can be folded by 90 degrees relative to the bends positioned at the side edges of the back plate. The bends can be arranged on two short sides and one long side of the back plate, and the sub-bends are arranged along the tail end of the bends so as to realize fixing of the liquid crystal display. The fixing structure for the liquid crystal display device can omit a frame and save the cost while fixing the liquid crystal display.

Description

A fixing structure of a liquid crystal display device

technical field

The utility model relates to the field of liquid crystals, in particular to a fixing structure of a liquid crystal display device.

Background technique

At present, in order to improve the fixing method of the LCD screen, there are different application methods in the industry, such as:

Method 1. The light guide plate contains multiple layers of space, and the backplane and frame are omitted; however, this method has disadvantages: the shape of the light guide plate is complicated, and the strength of the light guide plate is insufficient, and the vibration and shock resistance is poor.

Method 2: The back frame structure is formed by multi-stage stamping, eliminating the need for a frame; but this method has disadvantages: forming is difficult.

Method 3, multi-layer bonding of light guide plate, film material, etc., and thinning; but this method has disadvantages: excessive use of adhesives will reduce brightness.

Method 4: Install the independent receiving device on the back panel to support the LCD screen and replace the entire frame; but this method has disadvantages: the independent receiving device also needs injection molding, which requires additional costs.

Utility model content

In view of this, the main purpose of the present utility model is to provide a fixing structure of a liquid crystal display device, which saves the cost while saving the frame while realizing the fixing of the liquid crystal screen.

In order to achieve the above object, the technical solution of the utility model is achieved in that:

A fixing structure of a liquid crystal display device includes a bend arranged on a back plate and a sub-bend structure based on the bend.

The bends and/or sub-bends are arranged at least on two sides of the back plate.

The bends and/or sub-bends are U-shaped or L-shaped.

The sub-bends are bent at 90 degrees relative to the bends at the sides of the back plate.

The two short sides and one long side of the back plate are provided with the bends, and the sub-bends are provided along the end of the bends, and gaskets are provided or not provided around the sub-bends to realize liquid crystal The positioning of the screen.

The back plate is provided with a light guide plate and an outer frame; the bends on three sides of the back plate are vertically positioned to the three sides of the light guide plate, and the other side of the light guide plate is vertically positioned by the convex hull on the top surface of the outer frame.

There is a bend on the top surface of the outer frame, which is used to realize the in-plane positioning of the light guide plate in conjunction with the bend on the bottom plate of the backplane.

The vertical positioning of the LCD screen is realized by the spacers attached to the outer frame, the spacers attached to the bending of the back panel and the spacers attached to the light guide plate.

The bottom reflector is provided on the back plate, and the plane positioning of the bottom reflector is realized by the bending on the bottom plate of the back plate and the riveting posts arranged on the outer frame, and the vertical positioning of the bottom reflector depends on the light guide plate accomplish.

Screws are used to realize the seamless connection between the back plate and the outer frame, and there are gaps between the outer frame and the liquid crystal screen, and the outer frame and the light guide plate.

It can be seen that the fixing structure of the liquid crystal display device of the present invention can save the frame and save costs while realizing the fixing of the liquid crystal display.

Description of drawings

1a to 1c are schematic diagrams of the fixing structure of the liquid crystal display device according to the embodiment of the present invention;

2a to 2c are schematic diagrams of the assembly of the fixing structure related to the liquid crystal display device according to the embodiment of the present invention.

Detailed ways

Generally speaking, bending and sub-bending features can be set on the back panel, so as to save the frame and save costs while realizing the fixing of the LCD screen.

Specifically, currently used backplanes are generally rectangular, and bends (such as U-shaped and L-shaped bends) can be provided on at least two sides of the backplane. Sub-bending features are respectively set on the bends for fixing the liquid crystal screen. The backplane with the above-mentioned bending and sub-bending features can replace the original frame structure and save costs.

Example 1

In the edge-lit LED backlight liquid crystal module, it includes LED light source part, light guide plate, reflector, back plate, optical film material, cushion block, spacer, liquid crystal screen, outer frame, light-shielding film and other structures.

Wherein, the back plate is rectangular, wherein two short sides and one long side are provided with L-shaped bends, along the end of the L-shaped bend, several sub-bending features are set, and several O-shaped gaskets are set around the sub-bending features. The above-mentioned sub-bending features and the O-shaped gasket realize the positioning of the liquid crystal screen in a plane. like:

The L-shaped bending on three sides of the light guide plate is vertically positioned;

Vertical positioning of the light guide plate: vertical positioning of the convex hull of the back plate (Bezel) without bending;

In-plane positioning of the light guide plate: bending and positioning on the top surface of the outer frame;

In-plane positioning of the light guide plate: the bottom edge of the back plate is bent and positioned.

The light source part is arranged on any one side or multiple sides of the bent back plate, and the light guide plate is inserted into the back plate from the non-bent side of the back plate, and the L-shaped bends on the three sides of the back plate are vertically positioned to the three sides of the light guide plate. The other side of the light guide plate relies on the convex hull on the top surface of the outer frame to achieve vertical positioning. The bending features on the bottom plate of the backplane and the bending features on the top surface of the outer frame realize the in-plane positioning of the light guide plate.

There are many ways to vertically position the LCD screen, such as: outer frame + spacer (realized by backplane L-bending + spacer), or outer frame + spacer (realized by light guide plate + spacer). Specifically, the vertical positioning of the liquid crystal screen is realized by the gasket attached to the outer frame, the gasket attached to the L-shaped bend of the back panel, and the gasket attached to the light guide plate.

The plane positioning of the bottom reflector can be realized by the bending on the bottom plate of the backplane and the riveting posts on the outer frame, and the vertical positioning of the bottom reflector can be realized by the light guide plate.

Screws can be used to realize the gapless connection between the backplane and the outer frame, and a certain gap should be left between the outer frame and the liquid crystal screen, and the outer frame and the light guide plate. Among them, on the side of the back plate without L bending, the pressure riveting column on the outer frame directly connects with the bottom plate of the back plate, and the position of the corresponding pressure riveting column on the bottom plate of the back plate is provided with a turning hole thread to realize threaded connection; The backplane has three sides with L-shaped bends, and the convex hull on the outer frame directly connects with the L-shaped bend of the backplane, and is fixed on the turning hole thread on the bottom plate of the backplane by screws. A reflective sheet or a shading sheet can be arranged at the grooves on the bottom plate of the backplane and the top surface of the outer frame.

The utility model is described below in conjunction with accompanying drawing.

The backplane structure for liquid crystal display as shown in FIGS. 1 a , 1 b , and 1 c includes a bottom plate 101 , side bends 102 , and sub-bends 103 .

Wherein, the side bends 102 are distributed around the bottom plate 101, and the number of the side bends 102 is three. The plane formed by the side bends 102 is parallel to the bottom plate 101 .

The sub-bends 103 are distributed on the side bends 102 , and the sub-bends 103 are bent by 90 degrees relative to the side bends 102 , that is, perpendicular to the surface of the bottom plate 101 .

The above-mentioned backplane structure can replace the original backplane and plastic frame structure to realize the fixing of the light guide plate and the liquid crystal screen.

As shown in Figure 2a, firstly, the light guide plate 200 can be inserted into the backplane 100 in a flat insertion manner from the place where the backplane 100 does not have side bends 102, and the side bends 102 of the backplane 100 can realize alignment. The Z direction of the light plate 200 is completely positioned; the side bending 102 of the back plate 100 or the partial bending on the back plate bottom plate 101 can realize the complete positioning of the X direction of the light guide plate 200; the side bending 102 of the back plate 100 can be The positioning of the light guide plate 200 in the +Y direction is realized, but the positioning in the -Y direction requires the assistance of the outer frame 400 . See Figure 2b.

The liquid crystal screen 300 is placed on the side bend 102 of the back plate 100 to realize the positioning of the liquid crystal screen 300 in the −Z direction, but the positioning in the +Z direction requires the assistance of the outer frame 400 . See Figure 2b.

The positioning of the liquid crystal screen 300 in the X and Y directions in the plane is realized by the bending 103 of the back plate.

As shown in FIG. 2 b , the bend 401 in the outer frame 400 realizes the positioning of the light guide plate 200 in the −Y direction; the outer frame 400 realizes the positioning of the liquid crystal screen 300 in the +Z direction.

As shown in FIG. 2 c , the groove structure 402 of the outer frame 400 is in contact with the side bend 102 of the back plate 100 to prevent the outer frame 400 from directly contacting the liquid crystal panel 300 .

It can be seen that the fixing structure of the liquid crystal display device of the present invention can save the frame and save costs while realizing the fixing of the liquid crystal display.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model.

Claims (10)

1. A fixing structure for a liquid crystal display device, characterized in that it comprises a bend disposed on the back plate and a sub-bend structure based on the bend. 2 . The fixing structure of a liquid crystal display device according to claim 1 , wherein the bends and/or sub-bends are at least provided on two sides of the back plate. 3 . 3 . The fixing structure of a liquid crystal display device according to claim 1 , wherein the bend and/or sub-bend is U-shaped or L-shaped. 4 . 4 . The fixing structure of a liquid crystal display device according to claim 1 , wherein the sub-bend is bent at 90 degrees relative to the bend at the side of the back plate. 5. The fixing structure of a liquid crystal display device according to any one of claims 1 to 4, characterized in that, the two short sides and one long side of the back plate are provided with the bends, along the ends of the bends The sub-bend is provided, and gaskets are provided or not provided around the sub-bend, so as to realize the positioning of the liquid crystal screen. 6. The fixing structure of a liquid crystal display device according to claim 5, wherein a light guide plate and an outer frame are arranged on the back plate; the bending on three sides of the back plate is vertically positioned to the three sides of the light guide plate , the other side of the light guide plate relies on the convex hull on the top surface of the outer frame to achieve vertical positioning. 7. The fixing structure of the liquid crystal display device according to claim 6, characterized in that, the top surface of the outer frame is provided with a bend, which is used to realize alignment with the bend on the bottom plate of the backplane in the plane of the light guide plate. positioning. 8. The fixing structure of the liquid crystal display device according to claim 6, wherein the vertical positioning of the liquid crystal screen depends on the pads attached to the outer frame, the pads attached to the bending of the back plate, and the pads attached to the guides. Pads on bare boards. 9. The fixing structure of a liquid crystal display device according to claim 6, wherein a bottom reflection sheet is arranged on the back plate, and the plane positioning of the bottom reflection sheet depends on the bending on the bottom plate of the back plate and being arranged on the bottom of the back plate. The vertical positioning of the bottom reflection sheet is realized by the light guide plate. 10. The fixing structure of a liquid crystal display device according to claim 6, wherein screws are used to realize the seamless connection between the back plate and the outer frame, and the outer frame and the liquid crystal screen, the outer frame and the guide Gaps are provided between the light panels.

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