CN212083865U - An edge-wrapped reflective sheet, a backlight module, a display screen and a step fixture - Google Patents

Abstract

The utility model relates to an edge-wrapped reflective sheet, a backlight module, a display screen and a step fixture, which comprise a reflective body for reflecting light emitted by a light guide plate, and a folding portion arranged on the edge of the reflective body. The size of the reflective body is adapted to the plastic frame, and the folded portion is provided with an adhesive layer for bonding the plastic frame and the liquid crystal panel on the same side of the side of the reflective body used to reflect the light emitted by the light guide plate. The utility model has the effect that the hemming process can be quickly completed.

Description

An edge-wrapped reflective sheet, a backlight module, a display screen and a step fixture

technical field

The utility model relates to the technical field of backlight modules, in particular to an edge-wrapped reflective sheet, a backlight module, a display screen and a step fixture.

Background technique

The existing backlight module is generally formed by a light guide plate, a reflective sheet and a multi-layer film that are assembled in a plastic frame. When the light guide plate, diffuser, etc. are assembled in the plastic frame, black and black double-sided tape is usually used to bond the edge of the brightening film and the plastic frame, and then the liquid crystal panel is placed on the upper part, and the edge wrapping glue is used to wrap the backlight mold. The three edges of the flexible circuit board FPC are not set on the group and the liquid crystal panel, and then the flexible circuit board FPC is folded and bonded to the bottom surface of the backlight module to complete the installation.

Referring to FIGS. 1 and 2, the existing edge wrapping adhesive usually includes an upper covering film 51, an adhesive tape 52 and a lower covering film 53, wherein the lower covering film 53 is a longer PET film, and the adhesive tape 52 is a narrower section of single-sided adhesive. , which are arranged along the width direction of the lower cover film 53 and arranged along the length direction of the lower cover film 53 . The adhesive surface of each adhesive tape 52 is attached to the lower cover film 53 , and the side away from the adhesive tape surface is respectively attached to an upper cover film 51 . In use, the upper film 51 and the lower film 53 need to be torn apart so that the adhesive tape 52 can be wrapped on the plate 54 to be processed. For the convenience of description, take the attitude of the plate 54 to be processed flat on the workbench 55 as an example, wherein the side of the plate to be processed 54 facing the workbench 55 is the bottom surface 541, and the side away from the workbench 5 is the top surface 542. The end surfaces of the top surface 542 and the bottom surface 541 are the surfaces to be wrapped 543 . During the wrapping operation, the following steps are required:

S1. Referring to FIG. 3, peel off a set of connected adhesive tape 52 and upper coating 51 from the top of the lower coating 53;

S2. Referring to FIG. 4, the plate 54 to be processed is placed on the workbench 55, and the side with the adhesive surface of the tape 52 is attached to the edge of the top surface 541;

S3. Referring to FIG. 4, turn over the plate 54 to be processed that is attached to the tape 52 on the workbench 55;

S4. Referring to FIG. 5, the side of the tape 52 exposed on the top surface 541 is folded over and attached to the surface to be wrapped 543 and the bottom surface 541;

S5. Referring to FIG. 6, pressing the plate 54 to be processed, and tearing off the upper covering film 51 from the portion of the tape 52 relative to the surface to be wrapped 543 and the bottom surface 541;

S6. Referring to FIG. 7 and FIG. 8 , press the upper covering film 51 and lift the plate 54 to be processed, so as to tear off the upper covering film 51 from the portion of the tape 52 opposite to the top surface 542 .

It can be seen that this step is relatively complicated, and an easy-to-use device is urgently needed to simplify the use steps and improve the hemming efficiency.

Utility model content

Aiming at the deficiencies of the prior art, one of the objectives of the present invention is to provide an edge-wrapped reflective sheet that can quickly complete the edge-wrapping process.

One of the above-mentioned utility model purposes of the present utility model is achieved through the following technical solutions:

An edge-wrapped reflective sheet, comprising a reflective body for reflecting light emitted by a light guide plate, and a folded portion arranged on the edge of the reflective body, the size of the reflective body is adapted to a plastic frame, and the folded portion A plastic wrapping layer for bonding the plastic frame and the liquid crystal panel is arranged on the same side of the side of the reflective body that is used to reflect the light emitted by the light guide plate.

By adopting the above technical solution, when using, first perform the previous steps, first place the light guide plate, the diffuser, and the light enhancement film into the plastic frame, and then use black and black double-sided tape to connect the plastic frame and the liquid crystal panel. Align the plastic frame with the reflective body, abut and overlap, then press the liquid crystal panel, and fold the folded part upwards, so that the plastic wrapping layer is adhered to the plastic frame and the liquid crystal panel, so that the plastic frame and the liquid crystal panel are in phase. fixed. Compared with the prior art, the use of the reflective sheet for hemming only requires several folds, instead of the need to turn over the backlight module and the film many times, the process is greatly reduced, and the hemming is convenient and quick to complete. At the same time, the upper film, the lower film and the tape are omitted, which saves materials and is environmentally friendly.

In a preferred example of the present invention, it can be further configured that: the outer edge of the reflective body is provided with a top adhesive layer for adhering the bottom of the plastic frame, and the width of the top adhesive layer is the same as the width of the frame strip of the plastic frame. adaptation.

By adopting the above technical solution, when the plastic frame is aligned with the reflective body and abuts and overlaps, the top rubber layer can fix the reflective body and the plastic frame, so as to avoid the plastic frame moving when the folded part is folded and affecting the processing accuracy.

In a preferred example of the present invention, the reflective body can be further configured as follows: the reflective body is in the shape of a square sheet, and the reflective body includes a top surface for abutting against the light guide plate and the plastic frame, and connections located on three sides of the top surface respectively. The folded parts are respectively connected to the connecting surfaces of the reflecting body.

By adopting the above technical solution, the reflective body is in the shape of a square sheet, so it has four sides, three of which are connecting surfaces, respectively connected with a folded part, and the remaining one side is not connected with a folded part, corresponding to the backlight module and The side of the liquid crystal panel connected to the FPC does not need to be wrapped on the side corresponding to the FPC, because the FPC needs to be bonded to the bottom surface away from the reflective body in the later stage.

In a preferred example of the present invention, it can be further configured that: the width of the folded portion is greater than the sum of the thicknesses of the plastic frame and the liquid crystal panel.

By adopting the above technical solution, when the folded portion is folded upward and abuts against the plastic frame and the side of the liquid crystal panel, the end away from the reflective body will extend beyond the liquid crystal panel, and this end can continue to be folded and adhered to the liquid crystal panel. top edge.

In a preferred example of the present invention, it can be further configured that a gap is provided between the adjacent folded parts.

By adopting the above technical solution, the arrangement of the notch can avoid the spatial interference of the adjacent folded parts when they are folded.

Another object of the present invention is to provide an edge-wrapped backlight module that can quickly complete the edge-wrapping process.

A backlight module, comprising a plastic frame and the above-mentioned reflective sheet, and further comprising a light guide plate, a lower light-enhancing sheet, and an upper light-enhancing sheet, which are arranged in the plastic frame and are sequentially arranged in a direction away from the reflecting sheet, and the plastic frame is adhered to the top plastic Floor.

By adopting the above technical solution, the light guide plate, the lower light-enhancing sheet and the upper light-enhancing sheet are first assembled in the plastic frame, and then the bottom surface of the plastic frame is aligned with the top adhesive layer of the reflective sheet, so as to realize the connection between the plastic frame and the reflective sheet. fixed.

Another object of the present invention is to provide a hemming display screen capable of quickly completing the hemming process.

A display screen includes the above-mentioned backlight module, and also includes a liquid crystal panel adhered to the top of the backlight module.

By adopting the above technical solution, when using, first perform the previous steps, first place the light guide plate, the diffuser, and the light enhancement film into the plastic frame, and then use black and black double-sided tape to connect the plastic frame and the liquid crystal panel. Align the plastic frame with the reflective body, abut and overlap, then press the liquid crystal panel, and fold the folded part upwards, so that the plastic wrapping layer is adhered to the plastic frame and the liquid crystal panel, so that the plastic frame and the liquid crystal panel are in phase. fixed. Compared with the prior art, the use of the reflective sheet for hemming only requires several folds, instead of the need to turn over the backlight module and the film many times, the process is greatly reduced, and the hemming is convenient and quick to complete. At the same time, the upper film, the lower film and the tape are omitted, which saves materials and is environmentally friendly.

Another object of the present invention is to provide an edge-wrapped step jig that can quickly complete the edge-wrapping process.

A step jig for the above-mentioned display screen, the step jig comprises a board body and a folding groove provided on the board body for the display screen to be embedded, the width of the folding groove is equal to the width of the reflective body plus the Twice the thickness of the folded portion, the length of the folded groove is equal to the length of the reflective body plus the thickness of the folded portion.

By adopting the above technical solution, when in use, the assembly of the backlight module and the liquid crystal panel is aligned with the folding groove. At this time, due to the presence of a certain tension in the reflective sheet, the folding part is supported on the top of the plate body, so that the backlight module is The LCD panel and the LCD panel cannot fall into the folded groove. At this time, the LCD panel is pressed hard, the backlight module will bend the folded part and fall into the folded groove, and the side of the folded groove of the folded part will be bent and pressed tightly Bonded to the side of the backlight module and the LCD panel. Finally, the protruding portion of the folded portion relative to the liquid crystal panel is flattened by hand to make it adhere to the surface edge of the liquid crystal panel, thereby completing the installation.

In a preferred example of the present invention, it can be further configured that: the groove wall of the folding groove is provided with a notch for inserting fingers.

By adopting the above technical solution, since the folded portion is closely attached to the side wall of the folded groove, the setting of the notch can facilitate people to pull out the display screen.

To sum up, the present utility model includes at least one of the following beneficial technical effects:

1. There is no need to turn over the backlight module and lamination multiple times, the process is greatly reduced, and it is convenient and fast to complete the wrapping;

2. The upper film, the lower film and the tape are omitted, which saves materials and is environmentally friendly.

Description of drawings

Fig. 1 is the overall schematic diagram of edging glue, to-be-processed board and workbench in the background technology;

Fig. 2 is the enlarged view of A place in Fig. 1;

Fig. 3 is the operation schematic diagram of step S1 in the background technology;

Fig. 4 is the operation schematic diagram of step S2 and S3 in the background technology;

Fig. 5 is the operation schematic diagram of step S4 in the background technology;

Fig. 6 is the operation schematic diagram of step S5 in the background technology;

Fig. 7 is the operation schematic diagram of step S6 in the background technology;

Fig. 8 is the operation schematic diagram of step S6 in the background technology;

9 is a schematic structural diagram of a reflective sheet that can be wrapped in the first embodiment;

10 is an exploded view of the backlight film group in the first embodiment and the second embodiment;

11 is an exploded schematic view of the display panel and the step fixture in the third embodiment and the fourth embodiment;

FIG. 12 is a schematic diagram of the combination of the display panel and the step fixture in the third embodiment and the fourth embodiment.

In the figure,

1. Reflective sheet; 11. Reflective body; 111, Top surface; 112, Connecting surface; 113, Abutting surface; 114, Top adhesive layer;

2. Backlight module; 21. Plastic frame; 22. Light guide plate; 23. Diffuser; 24. Lower brightening plate; 25. Upper brightening plate;

3. LCD panel;

4. Step fixture; 41. Plate body; 42. Folding groove; 43. Notch;

51, upper film; 52, tape; 53, lower film; 54, plate to be processed; 541, bottom surface; 542, top surface; 543, surface to be wrapped; 55, workbench.

Detailed ways

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

The first implementation:

Referring to FIGS. 9 and 10 , it is a reflective sheet that can be wrapped by the utility model, which can be used to quickly complete the edging process. The reflective sheet 1 includes a reflective body 11 for reflecting the light emitted by the light guide plate 22, and a The folding portion 12 on the edge of the reflective body 11 is used for connecting the backlight module 2 and the liquid crystal panel 3 .

Referring to FIGS. 9 and 10 , the reflective body 11 is in the shape of a square sheet, and includes a top surface 111 for abutting with the light guide plate 22 and the plastic frame 21 , connection surfaces 112 located on three sides of the top surface 111 respectively, and for connecting with the FPC. The abutting surface 113 that interferes, and the bottom surface (not marked in the figure) used to fit the FPC. In this embodiment, each surface of the reflecting body 11 is rectangular. The plastic frame 21 used for assembling the reflecting body 11 is a square frame, the size of the reflecting body 11 is adapted to the plastic frame 21 , and the outer edge of the reflecting body 11 corresponds to the outer edge of the bottom surface of the plastic frame 21 . The outer edge of the reflective body 11 is provided with a top adhesive layer 114 . The top adhesive layer 114 is used for adhering the bottom of the adhesive frame 21 , and the width of the top adhesive layer 114 is less than or equal to the width of the frame strip of the adhesive frame 21 . In this embodiment, The width of the top glue layer 114 is equal to the width of the frame strip of the glue frame 21 .

The folded portions 12 are respectively connected to the connecting surfaces 112 of the reflecting body 11 . In the present embodiment, the folded portions 12 are arranged in a long strip, the length of which is smaller than the length of the contact surface 113 connected to it, and the width is greater than that of the plastic frame 21 In addition to the thickness of the liquid crystal panel 3 , a notch 43 is formed between adjacent folded parts 12 , and the notch 43 is used to prevent mutual interference when the folded parts 12 are rotated. The folding portion 12 is provided with an adhesive layer 121 for bonding the adhesive frame 21 and the liquid crystal panel 3 on the same side of the side of the reflecting body 11 that is used for reflecting the light emitted from the light guide plate 22 .

The implementation principle of this embodiment is as follows: align the plastic frame 21 with the reflective body 11, abut and overlap, then press the liquid crystal panel 3, and fold the folded portion 12 upwards, so that the plastic wrapping layer 121 is adhered to the plastic frame 21 and the liquid crystal panel 3, so that the plastic frame 21 and the liquid crystal panel 3 are fixed. Compared with the prior art, the use of the reflective sheet 1 for hemming only requires several folds, instead of the need to flip the backlight module 2 and the film many times, the process is greatly reduced, and the hemming is convenient and quick to complete. At the same time, the upper film, the lower film and the tape are omitted, which saves materials and is environmentally friendly.

Second implementation:

Referring to FIG. 10 , it is a backlight module disclosed by the utility model. The backlight module 2 includes a plastic frame 21 and the above-mentioned reflective sheet 1 , and also includes a light guide plate 22 , a lower light-enhancing sheet 24 and an upper light guide plate 22 arranged in the plastic frame 21 . The light-enhancing sheet 25 , the light guide plate 22 , the lower light-enhancing sheet 24 and the upper light-enhancing sheet 25 are sequentially arranged in the direction away from the reflection sheet 1 , and the bottom of the plastic frame 21 is bonded to the top adhesive layer 114 on the reflection body 11 .

Third implementation:

11 and FIG. 12, it is a display screen disclosed by the utility model, including the above-mentioned backlight module 2 and a liquid crystal panel 3 adhered to the top of the backlight module 2, and the encapsulation layer 121 is adhered to the plastic frame 21 and the liquid crystal panel. 3, and the edge of the top of the liquid crystal panel 3.

Fourth implementation:

11 and 12, it is a step fixture disclosed by the utility model. The step fixture 4 includes a plate body 41 and a folding groove 42 arranged on the plate body 41. The folding groove 42 is used for embedding the display screen. The width of the square groove is equal to the width of the reflective body 11 plus twice the thickness of the folded portion 12 , and the length is equal to the length of the reflective body 11 plus the thickness of the folded portion 12 . A notch 43 for fingers to insert is formed on a groove wall of the turning groove 42 . In this embodiment, the sectional shape of the notch 43 on the top surface 111 of the plate body 41 is a semicircle.

The implementation principle of this embodiment is as follows: when in use, the assembly of the backlight module 2 and the liquid crystal panel 3 is aligned with the folding groove 42. At this time, due to the presence of a certain tension in the reflective sheet 1, the folding portion 12 is supported on the plate body. 41, so that the backlight module 2 and the liquid crystal panel 3 cannot fall into the folding groove 42. At this time, the liquid crystal panel 3 is pressed hard, and the backlight module 2 will bend the folding part 12 and fall into the folding groove 42. The sides of the folded grooves 42 of the folded portion 12 are bent and tightly adhered to the sides of the backlight module 2 and the liquid crystal panel 3 . Finally, the protruding portion of the folded portion 12 relative to the liquid crystal panel 3 is flattened by hand to make it adhere to the surface edge of the liquid crystal panel 3 , thereby completing the installation.

The embodiments of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention, therefore: all equivalent changes made according to the structure, shape and principle of the present invention are It should be covered within the protection scope of the present invention.

Claims (9)

1. A reflective sheet that can be edge-wrapped, characterized in that it comprises a reflective body (11) for reflecting light emitted by a light guide plate (22) and a folded portion (12) arranged on the edge of the reflective body (11), The size of the reflective body (11) is adapted to the plastic frame (21), and the folded portion (12) is provided on the same side of the side of the reflective body (11) that is used to reflect the light emitted by the light guide plate (22) for bonding the plastic frame (21) and the encapsulation layer (121) of the liquid crystal panel (3). 2. The reflective sheet of claim 1, wherein the outer edge of the reflective body (11) is provided with a top adhesive layer (114) for adhering the bottom of the adhesive frame (21), so The width of the top adhesive layer (114) is adapted to the width of the frame strip of the adhesive frame (21). 3. The edge-wrapped reflective sheet according to claim 1, wherein the reflective body (11) is in the shape of a square sheet, and the reflective body (11) comprises a The top surface (111) that the frame (21) abuts against and the connecting surfaces (112) located on three sides of the top surface (111) respectively, the folded parts (12) are respectively connected to the connecting surfaces (112) of the reflecting body (11) ). 4 . The edge-wrapped reflective sheet according to claim 1 , wherein the width of the folded portion ( 12 ) is greater than the sum of the thicknesses of the plastic frame ( 21 ) and the liquid crystal panel ( 3 ). 5 . 5 . The edge-wrapped reflective sheet according to claim 1 , wherein a gap ( 43 ) is provided between adjacent folded parts ( 12 ). 6 . 6. A backlight module, characterized in that it comprises a plastic frame (21) and the reflective sheet (1) that can be wrapped according to any one of claims 1 to 5, and further comprises a plastic frame (21) arranged in the The light guide plate (22), the lower light enhancement sheet (24), and the upper light enhancement sheet (25) are sequentially arranged in the direction away from the reflection sheet (1). The plastic frame (21) is bonded to the top plastic layer (114). 7. A display screen, characterized in that, comprising the backlight module (2) according to claim 6, further comprising a liquid crystal panel (3) adhered to the top of the backlight module (2), and the encapsulation layer (121) ) is adhered to the plastic frame (21) and the sides of the liquid crystal panel (3) and the edge of the top of the liquid crystal panel (3). 8. A step fixture for the display screen according to claim 7, wherein the step fixture (4) comprises a board body (41) and a display screen embedded on the board body (41) The folded groove (42), the width of the folded groove (42) is equal to the width of the reflective body (11) plus twice the thickness of the folded portion (12), the length of the folded groove (42) is equal to The length of the reflective body (11) is added to the thickness of the folded portion (12). 9 . The step fixture according to claim 8 , wherein a notch ( 43 ) for inserting fingers is formed on the groove wall of the turning groove ( 42 ). 10 .

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