CN108881761B

CN108881761B - Backplate, display module assembly and display device

Info

Publication number: CN108881761B
Application number: CN201810807517.XA
Authority: CN
Inventors: 石德福; 沈思宽; 王玉年; 邹文聪
Original assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Current assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Priority date: 2018-07-18
Filing date: 2018-07-18
Publication date: 2021-03-05
Anticipated expiration: 2038-07-18
Also published as: CN108881761A

Abstract

The invention discloses a back plate, a display module and display equipment, and relates to the technical field of display equipment. The backboard comprises a bottom plate and a side plate arranged around the bottom plate, wherein the edge of the side plate is bent to form a bearing platform parallel to the bottom plate, and one end part of the bearing platform extends into the inner side of the side plate. The middle bottom plate and the side plates of the back plate form a space for accommodating components such as a light guide plate, an optical diaphragm and the like, the side plates are provided with the bearing tables, and the bearing tables can replace a middle frame in the prior art to fix the display panel, so that the number of parts of the display module is reduced, and the material and production cost is greatly reduced; the middle frame is omitted, the thickness of the display module is reduced, the thickness bottleneck of ultrathin display equipment in the prior art is broken through, the problem that foreign matters are generated due to chip falling of the middle frame can be avoided, and the quality of the display equipment is improved.

Description

Backplate, display module assembly and display device

Technical Field

The invention relates to the technical field of display equipment, in particular to a back plate, a display module and display equipment.

Background

With the development of technology, ultra-thin and ultra-narrow display devices such as televisions have become a great trend. In addition, with the global labor cost greatly rising, the current television products are seriously homogenized, the market competition is intensified day by day, and the design of a television with differentiated appearance and extremely low production cost and raw material cost is the breakthrough direction of the current television enterprises.

At present, the thickness of ultrathin and ultra-narrow televisions is mostly concentrated between 7 mm and 9mm, and the problems of insufficient strength, deformation and the like exist in part of ultrathin products due to the limitation of the integral structure. On the other hand, present traditional TV all has solitary center and face frame, has also increased material cost and manufacturing cost to a certain extent to the risk that produces the foreign matter when assembling the center, the face frame can increase the black limit width of TV, has certain influence to watching effect.

Therefore, there is a need for a television with a small number of parts, low material and production costs, and a differentiated appearance.

Disclosure of Invention

One objective of the present invention is to provide a back plate, which can integrate the functions of the middle frame of the existing display device, and is beneficial to reducing the thickness of the display device.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a backboard, includes the bottom plate and centers on the curb plate that the bottom plate set up, the edge bending type of curb plate become with the plummer that the bottom plate is parallel, one end of plummer stretches into the inboard of curb plate.

The bearing table comprises a first plate and a second plate which are stacked, the first plate is connected with the side plate, and the second plate is connected with the first plate.

Wherein, the junction of first board and the second board passes through the arc surface transition.

Wherein the first plate and the second plate are connected by a seamless pressing process.

Another objective of the present invention is to provide a display module, in which the back plate can integrate the functions of the middle frame of the existing display device, thereby facilitating to reduce the thickness of the display device and the cost.

a display module comprises an optical film and a back plate, wherein the optical film is stacked on the bottom plate, and the inner side surface of the bearing table is abutted to the front surface of the optical film.

The end part of the bearing table, which extends into the inner side of the side plate, is provided with a folding edge, the folding edge is bent towards the bottom plate to form a hook-shaped structure, the edge of the optical membrane is provided with a clamping hole, and the hook-shaped structure is clamped in the clamping hole.

The display module further comprises a light guide plate, the light guide plate is located between the bottom plate and the optical film, the through hole surrounded by the bearing table is matched with the light guide plate and the bottom plate in shape, the area of the bottom plate is larger than that of the light guide plate, and the area of the light guide plate is larger than that of the through hole.

Wherein, the display module assembly still includes:

and the display panel is stacked on the bearing table and is fixedly bonded with the bearing table through glue.

Wherein the glue is double-sided foam cotton glue.

It is still another object of the present invention to provide a display device in which a middle frame is omitted, which is advantageous for reducing the thickness of the display device and reducing the cost.

a display device comprises the display module.

Has the advantages that: the invention provides a backboard, a display module and display equipment. The middle bottom plate and the side plates of the back plate form a space for accommodating components such as a light guide plate, an optical diaphragm and the like, the side plates are provided with the bearing tables, and the bearing tables can replace a middle frame in the prior art to fix the display panel, so that the number of parts of the display module is reduced, and the material and production cost is greatly reduced; the middle frame is omitted, the thickness of the display module is reduced, the thickness bottleneck of ultrathin display equipment in the prior art is broken through, the problem that foreign matters are generated due to chip falling of the middle frame can be avoided, and the quality of the display equipment is improved.

Drawings

Fig. 1 is a front view of a display module according to embodiment 1 of the present invention;

fig. 2 is a side view of a display module provided in embodiment 1 of the present invention;

FIG. 3 is a first cross-sectional view of a back plate provided in embodiment 1 of the present invention;

fig. 4 is a first cross-sectional view of a display module according to embodiment 1 of the present invention;

fig. 5 is a second cross-sectional view of the back plate provided in embodiment 1 of the present invention;

fig. 6 is a second cross-sectional view of a display module according to embodiment 1 of the present invention;

fig. 7 is a partial structural schematic view of the assembled back plate, light guide plate and optical film provided in embodiment 1 of the present invention;

fig. 8 is a first cross-sectional view of a display module according to embodiment 2 of the present invention;

fig. 9 is a second cross-sectional view of a display module according to embodiment 2 of the present invention.

Wherein:

1. a back plate; 2. a display panel; 11. a base plate; 12. a side plate; 13. a bearing table; 131. a first plate; 132. a second plate; 1321. folding edges; 3. a reflective sheet; 4. a light guide plate; 5. an optical film; 51. a clamping hole; 6. double-sided foam cotton rubber; 7. and a diffusion plate.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

Example 1

The present embodiment provides a display device, which may be a device with an image display function, such as a television, a display screen, and an advertisement machine, and the display device in the present embodiment is described by taking a television as an example.

As shown in fig. 1 and 2, the television set includes a display module, the display module includes a backlight module and a display panel 2, the display panel 2 is installed on the front surface of the backlight module, and the backlight module is used for supplying sufficient brightness and uniformly distributed light sources to the display panel 2, so that images can be normally displayed on the display panel 2. In this embodiment, the backlight module may be a side-in type backlight module, and the side-in type backlight module is thinner than the direct type backlight module, which is beneficial to ultra-thinning of the television. The backlight module comprises a back plate 1, a light source, and a reflecting sheet 3, a light guide plate 4 and an optical diaphragm 5 which are sequentially stacked on the back plate 1. The light source is fixed on the back plate 1, and the light source is disposed opposite to the light incident surface of the light guide plate 4, in this embodiment, one side surface of the light guide plate 4 is the light incident surface. The light emitted from the light source forms a high-brightness and uniform surface light source under the action of the light guide plate 4 and the optical film 5, so as to be used by the display panel 2. The specific structure of the backlight module is a mature technology in the field and is not described herein again.

In the prior art, the display module further includes a middle frame and a face frame, wherein the middle frame is disposed at the edge of the optical film 5 and fixed with the back plate 1, so that the light guide plate 4, the optical film 5 and the like are fixed between the back plate 1 and the middle frame. The display panel 2 is disposed on the middle frame and fixed by the face frame. The existing display module has more parts and basically fixed structure, so that the overall thickness of the optical diaphragm 5, the middle frame, the display panel 2 and the face frame in the display equipment is maintained at 7-10mm, and further breakthrough cannot be realized.

In order to solve the above problems, in this embodiment, the structure of the back plate 1 is improved, so that the thickness of the optical film 5, the middle frame, the display panel 2 and the whole face frame can be reduced from the existing 7-10mm to 3.5mm, the existing design bottleneck is broken through, and the ultra-thin display device is realized.

Specifically, as shown in fig. 3, the back plate 1 includes a bottom plate 11 and a side plate 12 disposed around the bottom plate 11, the bottom plate 11 may be rectangular, the side plate 12 and the bottom plate 11 enclose a rectangular groove structure, and the groove structure may accommodate the reflective sheet 3, the light guide plate 4, the optical film 5, and the like. The edge of the side plate 12 is bent to form a bearing platform 13 parallel to the bottom plate 11, and one end of the bearing platform 13 extends into the inner side of the side plate 12. The bearing table 13 can replace a middle frame in the prior art and serve as a structural member for supporting and fixing the display panel 2, so that the number of parts of the display module is reduced, and the material and production cost is greatly reduced; one end of the bearing table 13 extends into the inner side of the side plate 12, and can limit the optical diaphragm 5 in the groove structure, so that the reflecting sheet 3, the light guide plate 4, the optical diaphragm 5 and the like are limited in the groove structure. In addition, the middle frame is omitted, the thickness of the display module is reduced, the thickness bottleneck of ultrathin display equipment in the prior art is broken through, the problem that foreign matters are generated due to chip falling of the middle frame can be avoided, and the quality of the display equipment is improved.

Since the thickness of the back plate 1 itself is relatively thin, in order to improve the strength of the carrier 13 and solve the problems of insufficient strength, easy deformation and the like of the ultra-thin display device, the carrier 13 may be a double-layer structure. As further shown in fig. 3, the carrier 13 includes a first plate 131 and a second plate 132 stacked on each other, the first plate 131 is connected to the side plate 12 at one end and connected to the second plate 132 at the other end, and the second plate 132 is used for supporting and fixing the display panel 2. The first plate 131 and the second plate 132 are folded by 180 degrees to form the double-layer bearing platform 13, so that the overall strength of the back plate 1 can be improved by multiple times, the requirement of supporting and fixing the display panel 2 on the basis of meeting the ultra-thin requirement is met, and the overall strength and reliability of the television are improved.

Alternatively, in order to make the connection between the first plate 131 and the second plate 132 more secure and stable, the first plate 131 and the second plate 132 may be connected by a seamless pressing process, such that the contact surfaces of the first plate 131 and the second plate 132 are firmly fixed together, and the second plate 132 is forced to be separated from the contact with the first plate 131.

Since the rear panel 1 is used as an appearance member of the display device, in order to improve the aesthetic degree of the display device, the joint of the first panel 131 and the second panel 132 may be transited through an arc surface.

Optionally, in this embodiment, the first plate 131 of the platform 13 is bent towards the outside of the slot structure, and the second plate 132 is bent towards the inside of the slot structure and extends into the inside of the slot structure. In other embodiments, the first plate 131 may be bent from the edge of the side plate 12 toward the inside of the slot structure, and then the second plate 132 is bent toward the outside of the slot structure, so as to form a double-layered platform 13.

As shown in fig. 4, the reflective sheet 3, the light guide plate 4 and the optical film 5 are all located in the groove structure, and the through holes surrounded by the light guide plate 4, the reflective sheet 3, the optical film 5, the bottom plate 11 and the bearing table 13 may have the same shape, so as to enhance the limiting effect of the groove structure on the light guide plate 4, the reflective sheet 3 and the optical film 5. In order to avoid the light guide plate 4 from being separated from the groove structure, the area of the through hole surrounded by the plummer 13 may be smaller than the area of the light guide plate 4, that is, the projection of the end of the second plate 132 extending into the groove structure toward the bottom plate 11 falls on the light guide plate 4, so as to prevent the light guide plate 4 from falling out when the display module is inclined.

In order to facilitate the installation of the light guide plate 4 into the groove body structure, the area of the light guide plate 4 is smaller than that of the bottom plate 11, so that sufficient installation space exists in the groove body structure.

In order to further reduce the part number of display module assembly, display panel 2 can be fixed on plummer 13 through sticky connecing, saves the face frame among the prior art to reduce display module assembly's thickness, reduce display module assembly's material and manufacturing cost. In addition, after the display panel 2 is bonded on the bearing table 13, the frameless design of the display device can be realized, the comprehensive screen effect of the television can be realized, and the visual experience of a user can be improved. Optionally, the adhesive in this embodiment may be a double-sided foam adhesive 6, where the double-sided foam adhesive 6 includes a Polyethylene (PE) foam double-sided adhesive, an Ethylene-Vinyl Acetate copolymer (EVA) foam double-sided adhesive, a Polyurethane (PU) foam double-sided adhesive, an acryl foam double-sided adhesive, and the double-sided foam adhesive 6 has the characteristics of strong adhesion, good holding power, good waterproof performance, strong temperature resistance, and the like.

As shown in fig. 5-7, the end of the second plate 132 extending into the side plate 12 may further be provided with a folded edge 1321, the folded edge 1321 is bent toward the bottom plate 11 to form a hook-shaped structure, the edge of the optical film 5 is provided with a clamping hole 51, and the hook-shaped structure is clamped into the clamping hole 51 to fix the optical film 5. The included angle between the folded edge 1321 and the inner side surface of the second plate 132 is smaller than 90 degrees, so that the matching effect of the hook-shaped structure and the clamping hole 51 is improved.

To facilitate the assembly of the optical film 5, the carrier 13 may be provided with a fold 1321 on one side only. When assembling the display module, one side of the reflective sheet 3 and one side of the light guide plate 4 may be sequentially inserted between the carrying platform 13 and the bottom plate 11, so as to place the reflective sheet 3 and the light guide plate 4 into the groove structure. Then, the optical film 5 is placed in the groove structure in the same manner and stacked on the light guide plate 4, and then the end of the optical film 5 provided with the clamping hole 51 is inclined towards the direction of the bottom plate 11, so that the hook-shaped structure can extend into the clamping hole 51 to be matched with the clamping hole 51.

As shown in fig. 6, in order to further improve the fixing effect on the optical film 5, the light guide plate 4 and the reflective sheet 3, the area of the optical film 5 is larger than that of the through hole, so that after the optical film 5 is stacked on the light guide plate 4, the inner side surface of the plummer 13 abuts against the front surface of the optical film 5, the position of the optical film 5 is fixed, and the reflective sheet 3 and the light guide plate 4 are fixed by the clamping action between the optical film 5 and the back plate 1.

Example 2

This embodiment provides a display device having substantially the same structure as that of embodiment 1, except that the backlight module is a direct type backlight module as in embodiment 1.

Specifically, as shown in fig. 8, in the direct-type backlight module, the bottom plate 11 of the back plate has a step structure, and the shape of the reflective sheet 3 is adapted to the shape of the bottom plate 11 and is placed on the bottom plate 11. The diffusion plate 7 and the optical film 5 are stacked in this order on the front side of the reflection sheet 11. Wherein, the back plate is the same as in embodiment 1, and still has a side plate 12 and a bearing platform 13, and the end of the bearing platform 13 can abut on the optical film 5. Meanwhile, as shown in fig. 9, a folded edge 1321 may also be disposed at an end of the second plate 132 of the carrier 13, and the folded edge 1321 is matched with a clamping hole on the diffusion sheet 5 to further fix the optical film 5, where the structure is the same as that in embodiment 1, and is not described again.

The optical film 5 can be limited by arranging the bearing table 13 on the back plate, and the reflecting sheet 3, the diffusion plate 7, the optical film 5 and the like can be limited in the groove structure. The plummer 13 can replace the center among the prior art, as the structure that supports, fixes display panel 2 to reduce display module's part quantity, greatly reduced material and manufacturing cost. In addition, the middle frame is omitted, the thickness of the display module is reduced, the thickness bottleneck of ultrathin display equipment in the prior art is broken through, the problem that foreign matters are generated due to chip falling of the middle frame can be avoided, and the quality of the display equipment is improved.

The reflection sheet 3 and the diffusion plate 7 may have an area smaller than that of the bottom plate 11 for easy installation, and may be assembled into the housing by inserting the reflection sheet 3 and the diffusion plate 7 obliquely. In order to prevent the reflection sheet 3 and the diffusion plate 7 from shaking in the housing, the reflection sheet 3 and the diffusion plate 7 may be fixed in the housing by adhesive bonding.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. The utility model provides a backplate (1), its characterized in that includes bottom plate (11) and centers on curb plate (12) that bottom plate (11) set up, the edge bending type of curb plate (12) with plummer (13) that bottom plate (11) are parallel, a tip of plummer (13) stretches into the inboard of curb plate (12), the medial surface of plummer (13) is used for the spacing of optical film piece, the lateral surface of plummer (13) is used for supporting display panel (2).

2. A back panel (1) according to claim 1, wherein the carrier (13) comprises a first panel (131) and a second panel (132) arranged one above the other, the first panel (131) being connected to the side panel (12) and the second panel (132) being connected to the first panel (131).

3. A backboard (1) according to claim 2, wherein the junction of the first board (131) and the second board (132) is transited by a circular arc surface.

4. A backsheet (1) according to claim 2, wherein said first sheet (131) and said second sheet (132) are joined using a seamless press-fit process.

5. A display module comprising an optical film (5), characterized in that it further comprises a back plate (1) according to any one of claims 1 to 4, said optical film (5) being superposed on said base plate (11), the inner side of said carrier table (13) being in abutment with the front face of said optical film (5).

6. The display module according to claim 5, wherein the end of the carrier (13) extending into the side plate (12) is provided with a folded edge (1321), the folded edge (1321) is bent towards the bottom plate (11) to form a hook-shaped structure, and the edge of the optical film (5) is provided with a clamping hole (51), and the hook-shaped structure is clamped in the clamping hole (51).

7. The display module according to claim 5, wherein the display module further comprises a light guide plate (4), the light guide plate (4) is located between the bottom plate (11) and the optical film (5), the through hole defined by the carrier (13), the light guide plate (4) and the bottom plate (11) are matched in shape, the area of the bottom plate (11) is larger than the area of the light guide plate (4), and the area of the light guide plate (4) is larger than the area of the through hole.

8. The display module of claim 5, wherein the display module further comprises:

the display panel (2) is stacked on the bearing table (13) and is fixedly bonded with the bearing table (13) through glue.

9. A display module according to claim 8, characterized in that the glue is double-sided foam glue (6).

10. A display device comprising a display module according to any one of claims 5-9.