CN107490888B

CN107490888B - Display device

Info

Publication number: CN107490888B
Application number: CN201710829100.9A
Authority: CN
Inventors: 马骥; 段其民
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2017-09-14
Filing date: 2017-09-14
Publication date: 2020-09-04
Anticipated expiration: 2037-09-14
Also published as: CN107490888A

Abstract

The present invention provides a display device including: the middle frame comprises a side wall and a first support arm which is perpendicular to the side wall and extends along the horizontal direction, the first support arm comprises an upper surface and a lower surface, and a positioning hole is formed in the first support arm; the diaphragm is positioned below the first supporting arm, and an assembling hole is formed in the diaphragm; the inserting tongue comprises a first inserting arm and a second inserting arm which extends along one end of the first inserting arm in the vertical direction, the first inserting arm is arranged on the upper surface of the first supporting arm, and the second inserting arm penetrates through the positioning hole and the assembling hole; the panel, the panel with be provided with fixed part between the first support arm, fixed part is located the upper surface of first support arm and/or the surface of first arm of inserting. The display device solves the problems of infirm fixation and light leakage in the process of manufacturing the ultra-narrow BM frameless liquid crystal display television, and realizes the ultra-narrowing of the BM area of the display device.

Description

Display device

Technical Field

The application relates to the technical field of display, in particular to a display device.

Background

As display technology has advanced to a certain stage, consumers increasingly attach importance to the appearance of displays. In order to meet the requirement of aesthetic property, besides the color and material of the display, the frame is also a place where consumers pay more attention to, so that the frame width of the liquid crystal television is reduced to become a trend, and the frame-free direction is developed. In order to realize the frameless design, the black edge area of the panel needs to be reduced, namely the BM area needs to be reduced, for example, the original 7mm is changed into 5mm, and the traditional design for realizing the narrowing of the black edge area is to make various positioning structures, structural members and the like in the range of the black edge area as small and fine as possible.

The liquid crystal module shown in fig. 1 includes a panel 100 ', a back plate 201 ', a light guide plate 202 ', a film 203 ', a middle frame 204 ', a hanging lug 205 ' and a panel tape 206 ', the hanging lug 205 ' is located on the middle frame 204 ', the hanging lug 205 ' is located below the film 203 ', the hanging lug 205 ' passes through a positioning hole 203a ' on the film to fix the film, and the panel tape 206 ' between the panel 100 ' and the middle frame 204 ' fixes the panel 100 ' on the middle frame and a part of the film in an adhering manner. Referring to fig. 1, it can be seen that there are mainly film tab structures, panel tapes and other structural members in the black edge area of the panel. To achieve the reduction of the black edge area of the panel, the sizes of the hanging lugs on the middle frame are correspondingly reduced, and the coverage area of the panel adhesive tape is narrowed. Being limited by the manufacturability of the product part, the smaller size of the hangers increases the difficulty of their manufacture. Meanwhile, the narrow coverage area of the panel tape means that the contact area between the panel tape and the middle frame becomes small, that is, the contact part shown by the circled area in fig. 1 becomes small, which causes the problems of insecure fixation of the panel, high repair rate of process production and the like. In addition, referring to fig. 1, the diaphragm is located on the ear hanging structure of the middle frame, and since the contact area between the panel adhesive tape and the middle frame is reduced, light emitted by the light source is easy to penetrate through the diaphragm, so that the light leakage problem of the obtained product is serious, and is not easy to solve. In summary, when the frameless display device is designed, only the structural member of the backlight structure is made small and fine, so that the reliability of the product is difficult to realize, new problems can occur, and the frameless display device with good performance suitable for the ultra-narrow BM panel needs to be developed.

Moreover, in order to realize the fixation of the middle frame of the back plate and the expansion of the accommodating diaphragm of the traditional frame-free television, the appearance piece of the television is provided with an outward-expanding structure, so that the overall attractiveness of the product is influenced.

Disclosure of Invention

In view of the above disadvantages of the prior art, an object of the present invention is to provide a display device with a new structure, which solves the problems of poor reliability and light leakage in the fabrication of an ultra-narrow BM frameless liquid crystal television by changing the size of the original structural member, and achieves the ultra-narrowing of the BM area of the frameless liquid crystal television.

In order to achieve the above object, the present invention provides a display device including: the middle frame comprises a side wall and a first support arm which is perpendicular to the side wall and extends along the horizontal direction, the first support arm comprises an upper surface and a lower surface, and a positioning hole is formed in the first support arm; the diaphragm is positioned below the first supporting arm, and an assembling hole is formed in the diaphragm; the inserting tongue comprises a first inserting arm and a second inserting arm which extends along one end of the first inserting arm in the vertical direction, the first inserting arm is arranged on the upper surface of the first supporting arm, and the second inserting arm penetrates through the positioning hole and the assembling hole; the panel, the panel with be provided with fixed part between the first support arm, fixed part is located the upper surface of first support arm and/or the surface of first arm of inserting. The display device with the structure has the advantages that the membrane is arranged at the lower part of the supporting arm, and the membrane is fixed through the matching of the positioning hole of the first supporting arm and the inserting tongue, so that the membrane is positioned without occupying a fixing area of the panel, namely, even if the black edge area of the panel is narrowed, compared with the wide black edge area in the prior art, the fixing area of the panel is not reduced or greatly reduced, and the reliable fixing of the membrane is ensured. Meanwhile, the relatively large panel fixing area and the lower structure of the diaphragm solve the problem of light leakage.

Further, the insertion tongue is an elastic insertion tongue. The elastic fixation of the diaphragm is realized by the elastic action of the inserting tongue, and the expansion and other changes of the diaphragm in the assembling and using processes can be effectively compensated.

Further, the fixing component is a fixing adhesive tape. The fixing part between the panel and the first supporting arm can adopt the parts commonly used in the field, and the fixing requirement can be met. The fixing part of the invention is preferably a fixing adhesive tape, and the fixing mode using the fixing adhesive tape is simple and meets the fixing requirement.

Further, the first insertion arm is fixed to an upper surface of the first support arm. The first inserting arm of the inserting tongue is fixed on the upper surface of the first supporting arm, so that the fixing of the inserting tongue is realized, and the diaphragm is further fixed.

Further, the first insertion arm is fixed to the upper surface of the first support arm by an adhesive tape. The insertion arm is fixed on the surface of the supporting arm in various ways, such as bonding fixation, mechanical connection and the like.

Furthermore, the middle frame further comprises a second supporting arm which is perpendicular to the side wall, extends in the horizontal direction and is positioned below the first supporting arm, and the second supporting arm supports the light guide plate. The design of the second supporting arm plays a role in bearing the light guide plate.

Further, a cavity is formed between the first support arm and the second support arm disposed to protrude from the side wall. Because the diaphragm is located first support arm below, the light guide plate is placed on the second support arm, so the tip of diaphragm and light guide plate is located cavity structure department, and cavity structure provides the space for the inflation of light guide plate and diaphragm, has avoided because of the expansion causes flare.

Furthermore, the upper surface of the first supporting arm is provided with a concave structure for accommodating the first inserting arm. When the device is assembled, the first inserting arm is placed in the concave structure, the surface of the first inserting arm and the upper surface of the supporting arm without the first inserting arm are positioned on the same horizontal plane, so that the inserting tongue structure does not occupy the transverse and longitudinal space of a product when the diaphragm is fixed, the thickness of a display device cannot be increased, and meanwhile, the flat surface of the supporting arm is also favorable for the panel fixing part to realize fixation and the panel to be placed.

Further, the width of the BM of the display device is not more than 5 mm.

In summary, the invention provides a display device with a new structure, which adopts a structure that a diaphragm is arranged below a middle frame supporting arm and a positioning hole on the diaphragm is penetrated through by an inserting tongue to fix the diaphragm, compared with the prior art, the display device with the structure has the advantages that the positioning of the diaphragm does not occupy the fixed area of a panel, the narrow BM area of the display device is realized, the larger contact area between a panel fixed part and the middle frame is ensured, the problems of weak fixation and light leakage existing in the process of manufacturing an ultra-narrow BM frameless liquid crystal television by changing the size of the original structural part are solved, the ultra-narrow BM area of the frameless display device is realized, and meanwhile, the cavity structural design of the middle frame avoids the outward expansion, so that the frameless display device is more beautiful.

Drawings

FIG. 1 is a schematic structural diagram of a conventional frameless display device;

fig. 2 is a schematic structural diagram of a frameless display device according to the present invention.

Detailed Description

It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It should be noted that the frameless structure in the embodiments of the present invention refers to a frameless structure. In the following, a detailed description will be given of an ultra-narrow BM frameless liquid crystal display device according to an embodiment of the present invention, which includes at least a backlight source, a reflective sheet, and the like in addition to the structure shown in fig. 2, and regarding other components of the backlight module of the liquid crystal display device according to the embodiment of the present invention, those skilled in the art may refer to the specific structure of the backlight module of the liquid crystal display device disclosed in the prior art, which is not limited by the present invention.

Referring to fig. 2, an embodiment of the present invention provides a liquid crystal display device, which is a bezel-free structure and includes a panel 100 and a backlight module, where the backlight module includes: the back plate 201, the light guide plate 202, the membrane 203 and the middle frame 204, the panel 100 is located above the backlight module, receives the light source provided by the backlight module, and displays the image picture. The panel 100 includes a display region and a BM region, wherein the BM region is a non-display region formed at a peripheral edge of the panel with a certain width. The width of the BM region of the display device according to the embodiment of the present invention is 5 mm.

Further, the middle frame 204 includes a side wall 204a and a first support arm 204b extending along a vertical direction of the side wall 204a, the first support arm 204b has an upper surface and a lower surface, and the first support arm 204b has a positioning hole 204 c. As shown in fig. 2, the membrane 203 is located below the first support arm 204b, and a fitting hole 203a is formed in the membrane 203 corresponding to the positioning hole 204 c. The backlight module 200 further comprises a plug tongue 205, the plug tongue 205 comprises a first plug arm 205a and a second plug arm 205b, the first plug arm 205a is placed on the first support arm 204b, and the second plug arm 205b sequentially penetrates through the positioning hole 204c and the assembling hole 203a, so that the diaphragm 203 is fixed. A panel tape 206 is disposed between the first support arm 204b and the panel 100 for adhesively fixing the panel 100. The first inserting arm 205a and the first supporting arm 204b are also fixed by an adhesive tape 207, and a double-sided tape (TESA 4928) may be used. Compared with the prior art shown in fig. 1, the membrane 203 is placed at the lower part of the supporting arm 204b of the middle frame 204, and the fixing of the membrane 203 is realized by inserting the inserting tongue 205 into the assembling hole of the membrane and the positioning hole of the supporting arm, so that the positioning of the membrane does not occupy the fixing area of the panel, that is, even if the black edge area of the panel is narrowed, the fixing area of the panel is not reduced or greatly reduced compared with the wide black edge area in the prior art, and the fixing firmness of the panel is ensured. Meanwhile, the relatively large panel fixing area and the membrane are arranged below, so that the problem of light leakage caused by narrowing is solved.

Further, the tongue 205 is designed as a resilient structure. The insertion tongue is inserted into the assembly hole of the diaphragm, the elastic property of the insertion tongue realizes elastic fixation of the diaphragm, and wrinkles and displacement caused by expansion with heat and contraction with cold of the diaphragm are avoided.

Preferably, the middle frame 204 further includes a second supporting arm 204d located below the first supporting arm 204b for supporting the light guide plate 202, and the first supporting arm 204b, the other supporting arm 204d and the sidewall 204a form a C-shape, forming a cavity structure. Because the diaphragm is located first support arm below, the light guide plate is placed on the second support arm, so the tip of diaphragm and light guide plate is located cavity structure department, and the existence of this cavity has provided the space for the inflation of light guide plate and diaphragm, has avoided the expansion that the inflation arouses to expand outward.

Continuing to refer to fig. 2, the first support arm 204b is provided with a concave structure for accommodating the first insertion arm 205a, the insertion tongue 205 is placed on the first support arm 204b, the upper surface of the first insertion arm 205a is flush with the upper surface of the part of the support arm 204b where the first insertion arm 205a is not placed, and is located on the same horizontal plane. The recessed structure may be a groove for receiving the first insertion arm, etc., and the present invention is not limited thereto.

The display device with the structure is suitable for the ultra-narrow BM panel, and particularly, the width of BM is not more than 5 mm. It should be noted that, when the frameless liquid crystal display device according to the embodiment of the present invention is assembled, since the middle frame has a cavity structure, the film may be assembled later, and the corresponding positioning structure of the film may also adopt a post-assembly manner.

The foregoing is merely a detailed description of the invention, and it should be noted that modifications and adaptations by those skilled in the art may be made without departing from the principles of the invention, and should be considered as within the scope of the invention.

Claims

1. A display device, comprising:

the middle frame comprises a side wall and a first supporting arm which is perpendicular to the side wall and extends along the horizontal direction, the first supporting arm comprises an upper surface and a lower surface, a positioning hole is formed in the first supporting arm, the middle frame further comprises a second supporting arm which extends perpendicular to the side wall and the horizontal direction and is positioned below the first supporting arm, and the second supporting arm supports the light guide plate; forming a cavity between the first support arm and the second support arm disposed to protrude from the sidewall;

the diaphragm is positioned below the first supporting arm, an assembly hole is formed in the diaphragm, and the diaphragm and the end part of the light guide plate are positioned at a cavity structure;

the inserting tongue comprises a first inserting arm and a second inserting arm which extends along one end of the first inserting arm in the vertical direction, the first inserting arm is arranged on the upper surface of the first supporting arm, the second inserting arm penetrates through the positioning hole and the assembling hole, a concave structure for accommodating the first inserting arm is arranged on the upper surface of the first supporting arm, and the upper surface of the first inserting arm and the upper surface of the supporting arm without the first inserting arm are positioned on the same horizontal plane;

a panel, wherein a fixing part is arranged between the panel and the first support arm, and the fixing part is positioned on the upper surface of the first support arm and/or the surface of the first insertion arm;

the insertion tongue is an elastic insertion tongue.

2. The display device of claim 1, wherein: the fixing component is a fixing adhesive tape.

3. The display device of claim 1, wherein: the first insertion arm is fixed to the upper surface of the first support arm.

4. A display device as claimed in claim 3, characterized in that: the first insertion arm is fixed to the upper surface of the first support arm through an adhesive tape.

5. A display device as claimed in any one of claims 1 to 4, characterized in that the width of the BM of the display device is not more than 5 mm.