CN110908187A

CN110908187A - Display device

Info

Publication number: CN110908187A
Application number: CN201911174180.4A
Authority: CN
Inventors: 马雄斌
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-03-24
Anticipated expiration: 2039-11-26
Also published as: CN110908187B

Abstract

The invention discloses a display device, which comprises a display panel and a backlight module, wherein the backlight module comprises a shell and a side-in backlight source; the side plates comprise a first side plate, and a first retaining wall is arranged on one side of the first side plate, which is far away from the side-in backlight source; the display device includes a first non-display area; the first non-display area comprises a first area, a third area and a second area which are sequentially arranged along the second direction; the light shielding structure of the LED lamp further comprises a wrapping tape, the wrapping tape comprises a first portion, the first portion comprises a first wrapping edge, a second wrapping edge and a third wrapping edge, the first wrapping edge wraps a light shielding layer corresponding to the first region, the second wrapping edge wraps a bottom plate corresponding to the first region, the third wrapping edge wraps at least one side, away from the first side plate, of the first retaining wall and the first side plate corresponding to the third region, the first wrapping edge comprises a first opening, and the first retaining wall is located in the first opening in an orthographic projection of the plane where the bottom plate is located.

Description

Display device

Technical Field

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

Background

The backlight module applied to the display panel at present is generally provided with a side-in type backlight source at the side of a light guide plate, light emitted by the side-in type backlight source enters the light guide plate and is absorbed, and the light is uniformly emitted from a light emitting surface of the light guide plate by means of the re-diffusion of mesh points arranged on the light guide plate, so that the light is converted into a surface light source from a point light source.

With the development of electronic technology, the manufacture of display panels is becoming mature, and the display panels provided by the prior art include liquid crystal display panels, organic light emitting display panels, plasma display panels, and the like. In order to increase the aesthetic feeling of the display screen and the appearance of the display device, it is becoming a development trend to improve the screen occupation ratio of the display device, and the full-screen display device is a mainstream product at present. The full screen is a broader definition of ultra-high screen than the design of the mobile phone in the mobile phone industry. The explanation is that the front of the mobile phone is a screen, and the four frame positions of the mobile phone are designed without frames, so that the screen occupation ratio is close to 100%.

But improve and can reduce the width in lower frame region after the screen accounts for the ratio, along with the width in lower frame region reduces gradually, the problem of frame light leak exists in the display device who has side income formula backlight unit.

Disclosure of Invention

In view of the above, the present invention provides a display device to solve the problem of light leakage of a lower frame.

The display device comprises a display panel and a backlight module which are oppositely arranged, wherein the backlight module comprises a shell and a side-in type backlight source, the shell comprises a bottom plate and a side plate, and the side plate and the bottom plate form an accommodating cavity for accommodating the side-in type backlight source;

the side plates comprise a first side plate and a second side plate which are oppositely arranged along a first direction, the side-in type backlight source is positioned on the bottom plate and close to one side of the first side plate, one side of the side-in type backlight source, which is far away from the bottom plate, comprises a light shielding layer, and the side-in type backlight source is positioned in the light shielding layer in a direction vertical to the bottom plate;

a first retaining wall is arranged on one side, away from the lateral backlight source, of the first side plate, and the height of the first retaining wall is larger than the distance between one side, away from the bottom plate, of the light shielding layer and the bottom plate in the direction perpendicular to the plane of the bottom plate;

the display device comprises a display area and a non-display area surrounding the display area, the non-display area comprises a first non-display area and a second non-display area which are oppositely arranged along a first direction, and a binding area is arranged in an area, located in the first non-display area, on the display panel; the first non-display area comprises a first area, a third area and a second area which are sequentially arranged along a second direction, and the first direction and the second direction are crossed;

still include the sticky tape of borduring, the sticky tape of borduring includes first portion, first portion includes integrated into one piece's first bordure, the second bordure and the third bordure, first bordure cladding with first region is corresponding display panel, the second bordure cladding with first region is corresponding the bottom plate, the third bordure cladding is at least the cladding first barricade is kept away from one side of first curb plate and with first region is corresponding the light shield layer, first bordure includes first opening, first barricade is in the planar orthographic projection in bottom plate place is located first opening is in within the planar orthographic projection in bottom plate place.

Optionally, the thickness of the first retaining wall in the first direction is D, and the width of the first opening in the first direction is E, where D is less than E.

Optionally, the display device further includes an cover plate, the cover plate is located the display panel is far away from one side of the backlight module, a first retaining wall and a first gap are arranged between the cover plate, perpendicular to the first gap is D in the direction of the bottom plate, perpendicular to the direction of the plane where the bottom plate is located the first retaining wall is far away from one side of the bottom plate and the shading layer is close to the height difference between one sides of the bottom plate, H is not less than E and not more than H + D, and D is not less than H + D.

Optionally, the backlight module further comprises a second retaining wall, the second retaining wall is located on one side of the first side plate, which is far away from the side-in backlight source, and the second retaining wall and the first retaining wall are symmetrically arranged along a second direction, and the second direction is crossed with the first direction;

the edge-covering adhesive tape further comprises a second part, the second part comprises a fourth edge covering, a fifth edge covering and a sixth edge covering which are integrally formed, the fourth edge covering covers the light shielding layer corresponding to the second area, the fifth edge covering covers the bottom plate corresponding to the second area, the sixth edge covering at least covers one side of the second retaining wall far away from the first side plate and the first side plate corresponding to the second area, the fourth edge covering comprises a second opening, and the orthographic projection of the second retaining wall on the plane of the bottom plate is located in the orthographic projection of the second opening on the plane of the bottom plate.

Optionally, the taping tape further includes a third portion, the third portion includes a seventh taping, an eighth taping and a ninth taping that are integrally formed, the seventh taping covers the light shielding layer corresponding to the third area, the eighth taping covers the first side plate corresponding to the third area, and the ninth taping covers the bottom plate corresponding to the third area.

Optionally, the bonding region includes a plurality of pads;

the display device further comprises a first FPC, the first FPC is located on one side, away from the bottom plate, of the seventh covered edge, the first FPC is electrically connected with the bonding pad, and the first FPC is bent to one side of the bottom plate and is fixedly connected with the bottom plate through a bonding piece.

Optionally, the side income formula backlight includes LED lamp strip, LED lamp strip includes a plurality of LED lamps and is a plurality of the second FPC of LED lamp power supply, be close to on the third bordure first bordure one side is equipped with the third opening, the third opening is in orthographic projection on the plane of first curb plate place with first barricade is in orthographic projection on the plane of first curb plate place is not overlapped, the second FPC stretches out the third opening and with first FPC electricity is connected.

Optionally, the edge-covering adhesive tape is a single-sided black adhesive tape.

Optionally, the backlight module further includes a reflector plate, a light guide plate, and an optical film, the light guide plate is disposed opposite to the first direction, the light exit surface of the light guide plate is intersected with the light exit surface of the lateral backlight source, the reflector plate is located on one side of the light guide plate close to the bottom plate, and the optical film is located on one side of the light guide plate far away from the bottom plate.

Optionally, the optical film includes a lower diffusion sheet, a prism sheet, and an upper diffusion sheet stacked in sequence on a side of the light guide plate away from the bottom plate.

Compared with the prior art, the display device provided by the invention at least realizes the following beneficial effects:

the display device is provided with the edge-covering adhesive tape, the edge-covering adhesive tape comprises a first part, the first part comprises a first edge covering, a second edge covering and a third edge covering which are integrally formed, the first edge covering covers a light shielding layer corresponding to a first area, the second edge covering covers a bottom plate corresponding to the first area, the third edge covering at least covers one side of a first retaining wall far away from the first side plate and the first side plate corresponding to the first area, the first edge covering comprises a first opening, the orthographic projection of the first retaining wall on the plane of the bottom plate is located in the orthographic projection of the first opening on the plane of the bottom plate, and the first part of the edge-covering adhesive tape effectively prevents the light leakage problem existing in the lower frame area.

Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic plan view of a display device according to the prior art;

FIG. 2 is a cross-sectional view taken along line A-A' of FIG. 1;

FIG. 3 is a schematic plane structure diagram of a display device according to the present invention;

FIG. 4 is a cross-sectional view taken along line B-B' of FIG. 3;

FIG. 5 is a cross-sectional view taken along line C-C' of FIG. 3;

FIG. 6 is a schematic plan view of a taping tape of the present invention;

FIG. 7 is a schematic perspective view of a taping tape of the present invention;

FIG. 8 is a cross-sectional view taken along line B-B' of FIG. 3;

FIG. 9 is a schematic plane view of another display device according to the present invention;

FIG. 10 is a cross-sectional view taken along line K-K' of FIG. 9;

FIG. 11 is a cross-sectional view taken along line L-L' of FIG. 9;

FIG. 12 is a schematic plan view of another taping tape of the present invention;

FIG. 13 is a further sectional view taken along line L-L' of FIG. 9;

FIG. 14 is a schematic plane view of another display device according to the present invention;

FIG. 15 is a cross-sectional view taken along line J-J' of FIG. 14.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Aiming at the problem that the display device in the prior art has light leakage in the lower frame region, the inventor researches the prior art as follows:

referring to fig. 1 and 2, fig. 1 is a schematic plan view of a display device according to the prior art, and fig. 2 is a cross-sectional view taken along a direction a-a' of fig. 1. The display device 000 of fig. 1 includes a display area AA 'and a non-display area BB' surrounding the display area AA ', the non-display area BB' including a first non-display area B1 'and a second non-display area B2' oppositely disposed along the first direction X, the first non-display area B1 'including a first area B11', a third area B13 ', and a second area B12' sequentially arranged along the second direction Y. Fig. 2 is a cross-sectional view of the first region B11 ', and it can be seen from fig. 2 that the display device 000 includes a display panel 1 ' and a backlight module 2 ' that are oppositely disposed, the backlight module 2 ' includes a housing 3 ' and a side-type backlight 4 ', the housing 3 ' includes a bottom plate 5 ' and a side plate 6 ', the side plate 6 ' includes a first side plate 61 ' and a second side plate 62 ' that are oppositely disposed along the first direction X, and the side-type backlight 4 ' is located on the bottom plate 5 ' on a side close to the first side plate 61 '. The side of the first side plate 61 ' far away from the side-in backlight 4 ' is provided with a first retaining wall 7 ', and in the direction perpendicular to the plane of the bottom plate 5 ', the height of the first retaining wall 7 ' is greater than that of the side plate 6. Of course, fig. 2 also shows that the backlight module 2 ' includes other optical film layers, including a light guide plate 15 ' disposed opposite to the side-in backlight 4 ', a lower diffusion sheet 16 ' stacked on the light guide plate 15 ' on the side close to the display panel 1 ', a prism sheet 17 ', an upper diffusion sheet 18 ', and a reflection sheet 14 ' disposed on the light guide plate 15 ' on the side away from the display panel 1, and also includes a glue frame 13 ', and the glue frame 13 ' on the inner wall of the side plate 6 ' of the housing 3 ' is bonded to the display panel 1 ' by a double-sided adhesive, so that a closed space is formed between the housing 3 ' and the display panel 1 ', and fig. 2 also shows that a light shielding layer 30 ' is included on the side of the lower diffusion sheet 16 ' away from the bottom plate.

As can be seen from fig. 2, since the first bank 7 'is provided in the region corresponding to the first region B11', a structure for preventing light leakage cannot be provided in the first region B11 ', and light leakage occurs at the edge position of the lower frame region, that is, the position of the first region B11'.

In order to solve the above problems, the present invention provides a display device to solve the problem of light leakage easily occurring in the lower frame region.

Referring to fig. 3, 4 and 5, fig. 3 is a schematic plan view of a display device according to the present invention, fig. 4 is a cross-sectional view taken along the direction B-B 'in fig. 3, and fig. 5 is a cross-sectional view taken along the direction C-C' in fig. 3. As can be seen in fig. 4, the display device includes a display panel 1 and a backlight module 2 which are oppositely disposed, the backlight module 2 includes a housing 3 and a side-in type backlight 4, the housing 3 includes a bottom plate 5 and a side plate 6, and the side plate 6 and the bottom plate 5 form an accommodating cavity to accommodate the side-in type backlight 4.

In fig. 4, the side plate 6 includes a first side plate 61 and a second side plate 62 which are oppositely arranged along the first direction X, the side-in backlight 4 is located on the bottom plate 5 on a side close to the first side plate 61, the side of the side-in backlight 4 away from the bottom plate 5 includes a light shielding layer 30, and the side-in backlight 4 is located inside the light shielding layer 30 in a direction perpendicular to the bottom plate 5.

It can also be seen from fig. 4 that a first retaining wall 7 is disposed on a side of the first side plate 61 away from the side-in backlight 4, and in a direction perpendicular to the plane of the bottom plate 5, the height of the first retaining wall 7 is greater than the distance between the side of the light shielding layer 30 away from the bottom plate 5 and the bottom plate 5, where the distance is the maximum distance, that is, the distance between the side of the light shielding layer 30 away from the bottom plate 5 and the side of the bottom plate 5 away from the light shielding layer 30 in fig. 4.

Referring to fig. 3, the display device 100 includes a display area AA, and a non-display area BB surrounding the display area AA, the non-display area BB including a first non-display area B1 and a second non-display area B2 oppositely disposed along a first direction X, a binding area BD provided in an area of the first non-display area on the display panel 1; the first non-display region B1 includes a first region B11, a third region B13 and a second region B12 arranged in sequence along the second direction Y, the first direction X intersecting the second direction Y;

referring to fig. 3 to 5, the display device 100 further includes a taping tape 8, the taping tape 8 includes a first portion 9, the first portion 9 includes a first taping 91, a second taping 92 and a third taping 93 which are integrally formed, the first taping 91 covers the light shielding layer 30 corresponding to the first region B11, the second taping 92 covers the bottom plate 5 corresponding to the first region B11, the third taping 93 covers at least one side of the first retaining wall 7 away from the first side plate 61 and the first side plate 61 corresponding to the first region B11, the first taping 91 includes a first opening 94, and an orthographic projection of the first retaining wall 7 on a plane of the bottom plate 5 is located within an orthographic projection of the first opening 94 on a plane of the bottom plate 5.

With reference to fig. 4 and 5, fig. 4 shows that the third edge cover the side of the first retaining wall 7 away from the first side plate 61, and fig. 5 shows that the third edge cover 93 covers the first side plate 61 corresponding to the first region B11.

In the present invention, the first surrounding edge 91 covers the light-shielding layer 30 corresponding to the first region B11, which means that the light-shielding layer 30 is covered on the side away from the bottom plate 5; similarly, the second covering edge 92 covers the bottom plate 5 corresponding to the first area B11, which means that the side of the bottom plate 5 away from the display panel 1 is covered.

It is understood that the display area AA and the non-display area BB are not filled for the sake of clarity of showing the position of the taping tape 8, but the taping tape 8, the retaining wall 7, and the first opening 94 on the first taping 91 are shown.

In this embodiment, the backlight module 2 further includes other optical film layers, fig. 4 further shows that the backlight module 2 includes other optical film layers, including a light guide plate 15 disposed opposite to the side-in backlight source 4, a lower diffusion sheet 16 stacked on the light guide plate 15 in sequence on a side close to the display panel 1, a prism sheet 17, an upper diffusion sheet 18, and a reflection sheet 14 disposed on a side of the light guide plate 15 away from the display panel 1, and also includes a glue frame 13, and the glue frame 13 on the inner wall of the side plate 6 of the housing 3 is bonded to the display panel 1 through a double-sided tape, so that a closed space is formed between the housing 3 and the display panel 1.

An alternative mode of the method for manufacturing the edge-covering tape is a cutting mode, referring to fig. 6 and 7, fig. 6 is a schematic plane structure diagram of the edge-covering tape provided by the invention, and fig. 7 is a schematic three-dimensional structure diagram of the edge-covering tape provided by the invention. In fig. 7, filling is not performed to show the three-dimensional structure. When the edge-wrapping tape 8 is manufactured, the edge-wrapping tape 8 in fig. 6 is provided, a cutting line is arranged along three sides of OP, PQ and QR, fig. 6 and 7 show that a fold M-M 'is formed at the joint of the first edge wrapping 91 and the third edge wrapping 93, a fold N-N' is formed at the joint of the third edge wrapping 93 and the second edge wrapping 92, when the wrapping is performed, the part of OPQR is folded along the cutting line to leak out the first opening 94 corresponding to the folded part, the folded part is used for wrapping the first retaining wall (not shown in the figure), and the part corresponding to the fold PQ after the folding is P 'Q' in fig. 7, so that the wrapping of the first region can be realized. Of course, the edge-covered tape of the present invention may not adopt the above-mentioned manufacturing method, and is not particularly limited herein.

Compared with the prior art, the display device in the embodiment has at least the following beneficial effects:

the display device 100 of the invention is provided with the edge-covering tape 8, the edge-covering tape 8 comprises a first part 9, the first part 9 comprises a first edge-covering 91, a second edge-covering 92 and a third edge-covering 93 which are integrally formed, the first edge-covering 91 covers the light shielding layer 30 corresponding to the first region B11, the second edge-covering 92 covers the bottom plate 5 corresponding to the first region B11, the third edge-covering 93 covers at least one side of the first retaining wall 7 away from the first side plate 61 and the first side plate 61 corresponding to the first region B11, the first edge-covering 91 comprises a first opening 94, the orthographic projection of the first retaining wall 7 on the plane of the bottom plate 5 is positioned in the orthographic projection of the first opening 94 on the plane of the bottom plate 5, the first region B11 with the first retaining wall 7 is covered by the edge-covering tape 8 to leak light, and the edge-covering tape 8 has the function of blocking light penetration, so that the problem of the first region B11.

With continued reference to fig. 4, the thickness of the first retaining wall in the first direction X is D, and the width of the first opening 94 in the first direction X is E, wherein D < E.

When the thickness D of the first retaining wall 7 in the first direction X is smaller than the width E of the first opening 94 in the first direction X, it can be ensured that the orthographic projection of the first retaining wall 7 on the plane of the bottom plate 5 is located within the orthographic projection of the first opening 94 on the plane of the bottom plate 5, and light leakage at the position of the first retaining wall is prevented.

Referring to FIG. 8, FIG. 8 is a cross-sectional view taken along the direction B-B' in FIG. 3, and FIG. 8 further includes a cover plate 19, the cover plate 19 is located on a side of the display panel 1 away from the backlight module 2, a first gap 20 is formed between the first wall 7 and the cover plate 19, a height of the first gap 20 in a direction perpendicular to the bottom plate 5 is D, a height difference between a side of the first wall 7 away from the bottom plate 5 and a side of the light shielding layer 30 close to the bottom plate 5 in a direction perpendicular to a plane of the bottom plate 5 is H, H is not less than E and not more than H + D, and D is not more than H + D.

It can be known from fig. 6 that the first retaining wall 7 is covered after the part of the OPQR is folded, so that D is not less than H + D, H is not less than E is not less than H + D, and it can be ensured that the OPQR completely covers the first retaining wall 7 after being folded, thereby preventing light leakage, and D is not less than H + D, H is not less than E is not less than H + D, and it can also be ensured that the OPQR can be folded, so that the orthographic projection of the first retaining wall 7 on the plane of the bottom plate 5 is located within the orthographic projection of the first opening 94 on the plane of the bottom plate 5.

Referring to fig. 9 and 10, fig. 9 is a schematic plan view of another display device provided by the present invention, fig. 10 is a cross-sectional view taken along the direction K-K' in fig. 9, the display device 100 further includes a second retaining wall 21, the second retaining wall 21 is located on a side of the first side plate 61 away from the side-in backlight 4, the second retaining wall 21 and the first retaining wall 7 are symmetrically disposed along a second direction, and the second direction Y intersects the first direction X.

The edge-covered adhesive tape 8 further comprises a second part 10, the second part 10 comprises a fourth edge 101, a fifth edge 102 and a sixth edge 103 which are integrally formed, the fourth edge 101 covers the light shielding layer 30 corresponding to the second area B12, the fifth edge 102 covers the bottom plate 5 corresponding to the second area B12, the sixth edge 103 covers at least one side of the second retaining wall 21 away from the first side plate 61 and the first side plate 61 corresponding to the second area B12, the fourth edge 101 comprises a second opening 104, and the orthographic projection of the second retaining wall 21 on the plane of the bottom plate 5 is located in the orthographic projection of the second opening 104 on the plane of the bottom plate 5.

The planar structure and the three-dimensional structure of the second part 10 can be seen in fig. 6 and 7, and alternatively, the structure of the second part 10 and the structure of the first part 9 in the present invention can be the same. The optional first part 9 and the second part 10 are of an integral structure, and the structures in fig. 6 and 7 are symmetrically arranged when the edge-covering adhesive tape 8 is manufactured.

In the embodiment, the first section 9 is disposed in the first region B11, and the second section 9 is disposed in the second region B12, so that light leakage from the first region B11 and the second region B12 in the first non-display region B1 can be prevented.

Referring to fig. 11, fig. 11 is a cross-sectional view taken along line L-L' in fig. 9, and fig. 11 shows that the taping tape 8 of the display device further includes a third portion 11, the third portion 11 includes a seventh taping 111, an eighth taping 112, and a ninth taping 113 that are integrally formed, the seventh taping 111 covers the light-shielding layer 30 corresponding to the third region B13, the eighth taping 112 covers the first side plate 61 corresponding to the third region B13, and the ninth taping 113 covers the bottom plate 5 corresponding to the third region B13.

It can be understood that the taping tape of the present invention can be integrated with the first, second and third regions, and referring to fig. 12, fig. 12 is a schematic plan view of another taping tape of the present invention, a cutting line (a chain line in fig. 12) can be disposed between the first portion 9 and the third portion 11 along the first direction X, and a cutting line is disposed between the third portion 11 and the second portion 10, so as to cover the first, second and third regions.

By providing the third portion 11 corresponding to the third region B13, light leakage from the third region B13 can be prevented. The edge-taping tape 8 is disposed correspondingly in each of the first, second, and third regions B11, B12, and B13, and it is possible to ensure that light leakage does not occur in the first non-display region B1.

Referring to fig. 13, fig. 13 is a further sectional view taken along line L-L' of fig. 9. The binding area BD of fig. 9 includes a plurality of PADs PAD;

the display device 100 further includes a first FPC 22, the first FPC 22 is located on one side of the seventh edge 111 away from the bottom plate 5, the first FPC 22 is electrically connected to the PAD, and the first FPC 22 is bent to one side of the bottom plate 5 and is fixedly connected to the bottom plate 5 through an adhesive member.

In the prior art, the first FPC is connected firstly and then the edge-covering adhesive tape is coated, and the first FPC can be extended out only by opening the third part. In the invention, the third area B13 is covered by the third portion 11 of the edge-covering tape, and then the first FPC 22 is connected to the PAD of the display panel 1, so that the third portion 11 does not need to be opened, and the manufacture is convenient.

Referring to fig. 14 and 15, fig. 14 is a schematic plan view of another display device according to the present invention, and fig. 15 is a sectional view taken along direction J-J' of fig. 14. In fig. 14, the side-in backlight source includes an LED light bar 24, the LED light bar 24 includes a plurality of LED lights 25 and a second FPC 23 for supplying power to the plurality of LED lights, a third opening 95 is disposed on a side of the third covering edge 93 close to the first covering edge 91, an orthographic projection of the third opening 95 on the plane of the first side plate 61 is not overlapped with an orthographic projection of the first retaining wall 7 on the plane of the first side plate 61, and the second FPC 23 extends out of the third opening 95 and is electrically connected to the first FPC (not shown in the figure).

In the backlight module 2 of the present invention, the first region B11 is covered by the edge-covering adhesive tape 8 and then connected to the second FPC 23, so that the second FPC 23 can be electrically connected to the LED lamp 25 by providing the third opening 95 on the third edge 93.

With continued reference to fig. 3 to 5, the edge-covering tape 8 is a single-sided black tape. The single-sided black adhesive tape can shield light rays emitted by the backlight module 2, light leakage is avoided, the single-sided black adhesive tape has good heat resistance, surface smoothness and mechanical flexibility, and an adhesive film does not need to be adhered to the single-sided black adhesive tape for coating.

With reference to fig. 3, the backlight module 2 further includes a reflective sheet 14, a light guide plate 15 and an optical film 26, the light guide plate 15 is disposed opposite to the side-in type backlight 4 along the first direction X, a light-emitting surface of the light guide plate 15 intersects with a light-emitting surface of the side-in type backlight 4, the reflective sheet 14 is located on a side of the light guide plate 15 close to the bottom plate 5, and the optical film 16 is located on a side of the light guide plate 15 away from the bottom plate 5.

The optical film 26 includes a lower diffusion sheet 16, a prism sheet 17, and an upper diffusion sheet 18 stacked in this order on the side of the light guide plate 15 away from the bottom plate 5, and optionally, referring to fig. 3, a light shielding layer 30 is provided on the side of the lower diffusion sheet 16 away from the bottom plate 5.

It can be understood that the lateral backlight module has the problem that the lower frame region is easy to leak light, and the problem of light leakage of the lower frame region of the lateral backlight module is solved.

As can be seen from the above embodiments, the display device provided by the present invention at least achieves the following beneficial effects:

the display device is provided with the edge-covering adhesive tape, the edge-covering adhesive tape comprises a first part, the first part comprises a first edge, a second edge and a third edge which are integrally formed, the first edge covers the display panel corresponding to the first area, the second edge covers the bottom plate corresponding to the first area, the third edge covers at least one side of the first retaining wall far away from the first side plate and the first side plate corresponding to the third area, the first edge comprises a first opening, the orthographic projection of the first retaining wall on the plane of the bottom plate is positioned in the orthographic projection of the first opening on the plane of the bottom plate, and the first part of the edge-covering adhesive tape effectively prevents the light leakage problem of the lower frame area.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display device is characterized by comprising a display panel and a backlight module which are oppositely arranged, wherein the backlight module comprises a shell and a side-in type backlight source, the shell comprises a bottom plate and a side plate, and the side plate and the bottom plate form an accommodating cavity for accommodating the side-in type backlight source;

still include the sticky tape of borduring, the sticky tape of borduring includes first portion, first portion includes integrated into one piece's first bordure, the second bordure and the third bordure, first bordure cladding with first region is corresponding the light shield layer, second bordure cladding with first region is corresponding the bottom plate, the third bordure cladding is at least the cladding first barricade is kept away from one side of first curb plate and with first region is corresponding the first curb plate, first bordure includes first opening, first barricade is in the planar orthographic projection in bottom plate place is located first opening is in within the planar orthographic projection in bottom plate place.

2. The display device according to claim 1, wherein the first retaining wall has a thickness D in the first direction, and the first opening has a width E in the first direction, wherein D < E.

3. The display device according to claim 2, wherein the cover plate is disposed on a side of the display panel away from the backlight module, a first gap is formed between the first wall and the cover plate, a height of the first gap in a direction perpendicular to a plane of the bottom plate is D, a height difference between a side of the first wall away from the bottom plate and a side of the light shielding layer close to the bottom plate in the direction perpendicular to the plane of the bottom plate is H, H is not less than E and not more than H + D, and D is not less than H + D.

4. The display device according to claim 1, further comprising a second retaining wall, wherein the second retaining wall is located on a side of the first side plate away from the side-in backlight source, and is symmetrically arranged with respect to the first retaining wall along a second direction, and the second direction intersects with the first direction;

5. The display device according to claim 4, wherein the edge-covered tape further includes a third portion including a seventh edge, an eighth edge, and a ninth edge which are integrally formed, the seventh edge covering the light-shielding layer corresponding to the third region, the eighth edge covering the first side plate corresponding to the third region, and the ninth edge covering the bottom plate corresponding to the third region.

6. The display device according to claim 5, wherein the bonding region includes a plurality of pads;

7. The display device according to claim 6, wherein the side-in backlight source comprises an LED light bar, the LED light bar comprises a plurality of LED lamps and a second FPC for supplying power to the LED lamps, a third opening is arranged on one side of the third edge close to the first edge, an orthographic projection of the third opening on the plane of the first side plate is not overlapped with an orthographic projection of the first retaining wall on the plane of the first side plate, and the second FPC extends out of the third opening and is electrically connected with the first FPC.

8. The display device according to claim 1, wherein the edge-covered tape is a single-sided black tape.

9. The display device according to claim 1, wherein the backlight module further comprises a reflective sheet, a light guide plate and an optical film, the light guide plate is disposed opposite to the first direction, the light emitting surface of the light guide plate intersects with the light emitting surface of the side-entry backlight source, the reflective sheet is disposed on a side of the light guide plate close to the bottom plate, and the optical film is disposed on a side of the light guide plate away from the bottom plate.

10. The display device according to claim 1, wherein the optical film comprises a lower diffusion sheet, a prism sheet, and an upper diffusion sheet stacked in this order on a side of the light guide plate away from the bottom plate.