CN205177335U - Seamless splicing apparatus of LCD screen - Google Patents

Abstract

The utility model provides a liquid crystal screen seamless splicing device, which comprises a bottom lining board, an LED board and an LED scattering cover; Through holes are opened; the LED board is installed on the connection board, and the LED board includes the PCB card and the LED lamp beads mounted on the surface of the PCB card; the positions corresponding to the through holes on the LED diffuser cover are respectively equipped with connecting claws, and the LED diffuser cover buckles Installed on the LED board, the LED diffuser cover is fixedly connected with the connecting plate through the connecting claws; the utility model uses LED active light compensation to cover the seams, and at the same time, the diffuser cover eliminates the gap between the LED light-emitting units, so as to solve the problem of LCD splicing. The resulting black edge phenomenon realizes seamless splicing between LCD screens, and the effect of no gaps at all after splicing LCD screens; avoids the use of flexible PCBs for 90-degree bending, reduces the increased cost of flexible PCBs, and avoids flexible PCBs. The production failure of PCB due to bending can improve the yield of equipment.

Description

LCD screen seamless splicing device

technical field

The utility model relates to a splicing device, in particular to a liquid crystal screen seamless splicing device.

Background technique

Liquid crystal display is the mainstream display device today, and it is widely used in the splicing field of larger screens. However, due to the display principle of the liquid crystal display, there will be a black border around each display; with the improvement of technology, this border can become very small, reaching 5mm or even smaller, but it cannot be completely eliminated. Therefore, during the splicing process of large screens, the phenomenon of black borders between different LCD screens will have a greater impact on viewing. In order to solve this black edge problem, the existing seamless splicing scheme is implemented as follows: use a flexible PCB to mount the LED and then perform a 90-degree bend, and fix the metal substrate and the protective cover to solve the problem of the black edge of the LCD screen. However, the above-mentioned existing seamless splicing scheme has the following defects: ①The cost of flexible PCB is too high, which has a great impact on the overall cost of equipment; ②It is difficult to control the 90-degree bending process of flexible PCB, and the yield is low. Not conducive to large-scale production.

Utility model content

In order to solve the problems existing in the prior art, the object of the utility model is to provide a liquid crystal screen seamless splicing device.

The technical solution adopted by the utility model is: a liquid crystal screen seamless splicing device, including a bottom lining board, an LED board and an LED scattering cover;

The bottom lining plate includes a fixing plate and a connection plate fixed on the top of the fixing plate, and through holes are respectively set on the connection plate;

The LED board is installed on the connection board, and the LED board includes a PCB card and LED lamp beads mounted on the surface of the PCB card;

The positions corresponding to the through holes on the LED diffuser cover are respectively provided with connecting claws, the LED diffuser cover is fastened on the LED board, and the LED diffuser cover is fixedly connected with the connecting plate through the connecting claws.

Preferably, the thickness of the PCB card is ≤0.5mm.

Preferably, a connector for signal transmission is welded on the bottom surface of the PCB card, and an opening is provided on the bottom substrate at a position corresponding to the connector.

Preferably, the fixing plate is an L-shaped plate.

Preferably, mounting holes are opened on the fixing plate.

Preferably, the LED diffuser cover is a rectangular base, the top of the base is an arc-shaped dome, and the bottom of the base is respectively provided with grooves at positions corresponding to the LED lamp beads.

Preferably, through holes are respectively opened in the length direction of the connecting plate.

Preferably, the LED diffuser cover is injection molded from translucent PC material.

Preferably, the bottom substrate is a metal plate.

Preferably, the LED lamp beads are evenly mounted on the surface of the PCB board.

Adopting the above-mentioned technical scheme, the technical effects produced by the utility model are as follows: the utility model adopts the LED light source array for active compensation, directly fixes the LED light source array on the frame of the liquid crystal screen through the PCB card, and at the same time installs the LED light source array on the The diffuser cover makes the LED light source array emit light evenly in all directions. Since the LED itself has a uniform light emitting angle, different viewing angles will not affect the image, and the diffuser diffuses the light to fill the gaps between the LED lights, and finally forms a uniform and continuous pixel array in all directions. The utility model uses LED active light-emitting compensation to cover the seams, and at the same time, the scattering cover eliminates the gap between the LED light-emitting units. So as to solve the black edge phenomenon after the splicing of the LCD screen, realize the seamless splicing between the LCD screens, and achieve the effect of no gap at all after the splicing of the LCD screen; avoid the use of flexible PCBs for 90-degree bending, and reduce the cost of flexible PCBs. The increased cost avoids the production failure of the flexible PCB due to bending and improves the yield of equipment.

Description of drawings

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

Fig. 2 is the structural explosion view of the utility model.

detailed description

The embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings.

As shown in Fig. 1 and Fig. 2, the structure diagram of the utility model includes a bottom substrate 1, an LED board 2 and an LED scattering cover 3; the bottom substrate 1 includes a fixed plate 11 and a connection plate fixed on the top of the fixed plate 11 12. Through holes 121 are opened on the connection board 12; the LED board 2 is installed on the connection board 12, and the LED board 2 includes a PCB board 21 and an LED lamp bead 22 mounted on the surface of the PCB board 21, and the LED lamp bead 22 is used As shown; the position corresponding to the through hole 121 on the LED diffuser cover 3 is respectively provided with connecting claws 31, the LED diffuser cover 3 is fastened on the LED board 2, the connecting claws 31 of the LED diffuser cover 3 pass through the through holes 121 respectively, and the connecting The claw 31 is heated and melted, so that the LED diffuser 3 and the connection plate 12 are connected as one; the thickness of the PCB card 21 is ≤0.5mm, so as to avoid poor connection between the LED and the LCD screen due to the excessive thickness of the PCB card 21, and the PCB The bottom surface of the board card 21 is welded with a connector 23 for signal transmission, an opening 13 is provided at the position corresponding to the connector 23 on the bottom lining board 1, the fixed plate 11 is an L-shaped plate, and the fixed plate 11 is provided with a mounting hole 111; The cover 3 is a rectangular base 32, the top of the base 32 is an arc-shaped dome 33, and the bottom of the base 32 is respectively provided with grooves 34 corresponding to the positions of the LED lamp beads 22; the LED diffuser cover 3 is injection molded by translucent PC material; It is a metal plate; the LED lamp beads 22 are evenly mounted on the surface of the PCB card 21 .

The usage method of the present utility model is: install the utility model on the LED screen through the installation 111 holes on the fixing plate 11, and each LED screen only needs to select one side on the upper, lower, left and right black sides for Just install the splicing device of the utility model. In the process of splicing multiple small screens, one of the four corners of the final large splicing screen needs to be used as a reference, and the small screens are superimposed in sequence until the entire large screen is completed.

The utility model adopts the LED light source array for active compensation, and directly fixes the LED light source array on the frame of the liquid crystal screen through the PCB card, and at the same time installs a scattering cover on the LED light source array, so that the LED light source array emits light uniformly in all directions. Since the LED itself has a uniform light emitting angle, different viewing angles will not affect the image, and the diffuser diffuses the light to fill the gaps between the LED lights, and finally forms a uniform and continuous pixel array in all directions. The utility model uses LED active light-emitting compensation to cover the seams, and at the same time, the scattering cover eliminates the gap between the LED light-emitting units. In order to solve the black edge phenomenon after splicing LCD screens, realize seamless splicing between LCD screens, and achieve the effect of no gaps after splicing LCD screens; avoid the use of flexible PCBs for 90-degree bending, and reduce the cost of flexible PCBs. The increased cost avoids the production failure of the flexible PCB due to bending and improves the yield of equipment.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Any skilled person familiar with the technical field can easily think of changes within the technical scope disclosed by the utility model Or replacement, all should be covered within the scope of protection of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. the seamless spliced device of liquid crystal display, is characterized in that: comprise bottom lining plate (1), LED board (2) and LED scattering cover (3);

Described bottom lining plate (1) comprises fixed head (11) and is fixed in the web joint (12) at fixed head (11) top, described web joint (12) is offered respectively through hole (121);

Described LED board (2) device is on web joint (12), and LED board (2) comprises pcb board card (21) and is mounted on the LED lamp bead (22) on pcb board card (21) surface;

The position of the upper corresponding through hole (121) of described LED scattering cover (3) is respectively equipped with and connects pawl (31), LED scattering cover (3) spiral-lock is on LED board (2), and LED scattering cover (3) is fixedly connected with web joint (12) by connecting pawl (31).

2. the seamless spliced device of liquid crystal according to claim 1, is characterized in that: the thickness≤0.5mm of described pcb board card (21).

3. the seamless spliced device of liquid crystal according to claim 1 and 2, it is characterized in that: described pcb board card (21) bottom surface is welded with the connector (23) for Signal transmissions, the position of the upper corresponding connector (23) of described bottom lining plate (1) is provided with opening (13).

4. the seamless spliced device of liquid crystal according to claim 1, is characterized in that: described fixed head (11) is L shaped plate.

5. the seamless spliced device of the liquid crystal according to claim 1 or 4, is characterized in that: described fixed head (11) offers mounting hole (111).

6. the seamless spliced device of liquid crystal according to claim 1, it is characterized in that: described LED scattering cover (3) is rectangular seat (32), described base (32) top is arc dome (33), and the position of base (32) the corresponding LED lamp bead in bottom (22) is respectively equipped with groove (34).

7. the seamless spliced device of liquid crystal according to claim 1, is characterized in that: the length direction of described web joint (12) is offered respectively through hole (121).

8. the seamless spliced device of the liquid crystal according to claim 1 or 6, is characterized in that: described LED scattering cover (3) is shaping by translucent PC material injection.

9. the seamless spliced device of liquid crystal according to claim 1, is characterized in that: described bottom lining plate (1) is sheet metal.

10. the seamless spliced device of liquid crystal according to claim 1, is characterized in that: described LED lamp bead (22) is mounted on pcb board card (21) surface uniformly.