CN214098025U

CN214098025U - Display device

Info

Publication number: CN214098025U
Application number: CN202120353964.XU
Authority: CN
Inventors: 石磊; 王汉永; 潘光翔
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-08-31
Anticipated expiration: 2031-02-08

Abstract

The utility model relates to a display device, which comprises a display panel, an optical diaphragm, a diffusion plate and a transparent adhesive tape; the display panel comprises a display area and a non-display area; the optical film is arranged on the back side of the display panel, and the outer boundary of the optical film is positioned between the inner boundary and the outer boundary of the non-display area; the diffusion plate is attached to the back side of the optical film, and the outer boundary of the diffusion plate exceeds the outer boundary of the optical film; the transparent adhesive line is positioned on the outer side of the optical film and is attached between the non-display area and the diffusion plate. The utility model discloses utilize the outer boundary of optics diaphragm to surpass display panel's display area, the outer boundary of cooperation diffuser plate surpasss the outer boundary of optics diaphragm, replaces leaded light spare to play the astigmatism effect, solves the shadow problem on display surface boundary, simplifies production processes, reduction in production cost. The transparent glue line can bond the display panel on the diffuser plate, effectively solves the display panel bonding reliability problem that leads to because of the layering problem of optics diaphragm.

Description

Display device

Technical Field

The utility model relates to a show technical field, in particular to display device.

Background

Liquid crystal displays are one of the main types of display devices, and have been widely used in various electronic apparatuses. In particular, the design of narrow-frame lcd has become a trend of lcd with its compact and fashionable appearance, and the width of the non-display area bm (black matrix) of the lcd panel is gradually narrowed.

In the related art, the lcd with narrow frame has high requirements for fixing the BM area of the lcd panel, and the current general solution is to fix the lcd panel with transparent UV glue, fix the membrane with lcd panel and diffuser plate in full-lamination mode, and then bond and fix the diffuser plate to the middle frame or the back plate. For the display area that the face that bonds of avoiding the diffuser plate influences the panel, the fixed surface of diffuser plate all need paste through the sticky tape and paste on the leaded light spare, leaded light spare rethread sticky tape adhesion to center or backplate on, lead to the production processes complicated and the cost is higher.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a display device to optimize display panel's among the prior art bonding structure in the display device.

In order to solve the technical problem, the utility model adopts the following technical scheme:

according to an aspect of the present invention, the utility model provides a display device, this display device includes: the display panel is used for displaying images on the front surface and comprises a display area and a non-display area located on the periphery of the display area; the optical film is arranged on the back side of the display panel, and the outer boundary of the optical film is positioned between the inner boundary and the outer boundary of the non-display area; the diffusion plate is attached to the back side of the optical film, and the outer boundary of the diffusion plate exceeds the outer boundary of the optical film; and the transparent adhesive tape is positioned on the outer side of the optical film and is attached between the non-display area and the diffusion plate.

According to some embodiments of the present application, the display device further comprises a back plate assembly and a transparent adhesive layer; the back plate assembly is provided with a first bonding surface; the periphery of the diffusion plate is bonded on the first bonding surface through the transparent adhesive layer.

According to some embodiments of the present application, the back plate assembly has a second bonding surface protruding from a front side of the first bonding surface; the outer boundary of the diffusion plate does not exceed the outer boundary of the display panel; the non-display area is bonded on the second bonding surface through the transparent adhesive tape.

According to some embodiments of the present application, the transparent glue line and the transparent glue layer are both transparent UV glue.

According to some embodiments of the present application, the display device further comprises a light-shielding glue line; the shading glue line is arranged on the outer side of the transparent glue line in a sticking mode along the extending direction of the transparent glue line, and the shading glue line can shade light rays emitted outwards through the transparent glue line.

According to some embodiments of the present application, the light-shielding glue line and the transparent glue line are attached to the back surface of the non-display area side by side.

According to some embodiments of the application, the light-shielding glue line is a light-shielding coating sprayed on the outer side of the transparent glue line.

According to some embodiments of the present application, the light blocking coating covers a peripheral sidewall of the diffusion plate.

According to some embodiments of the present application, the display device further comprises a light blocking tape; the shading adhesive tape is located on the periphery of the display panel and is attached to the outer side of the shading adhesive line.

According to some embodiments of the present application, the display device further includes an outer frame, the outer frame is disposed at intervals around the display panel, and the light-shielding tape is sandwiched between the display panel and the outer frame.

According to the above technical scheme, the embodiment of the utility model provides an at least have following advantage and positive effect:

the utility model discloses among the display device, utilize optics diaphragm, diffuser plate and display panel cooperation, the outer boundary of optics diaphragm surpasses display panel's display area to be located between non-display area's inner boundary and the outer boundary, the outer boundary of diffuser plate surpasss the outer boundary of optics diaphragm simultaneously, so can replace leaded light spare effectively to play the astigmatism effect, solve the shadow problem on display surface boundary, and then realize display panel's bonding structure's optimization, simplify production processes, reduction in production cost. Meanwhile, the transparent glue line can bond and fix the display panel on the diffusion plate, the bonding reliability problem of the display panel caused by the layering problem of the optical film is effectively solved, the transparent glue line can transmit light and also can play a certain light scattering role, and the shadow problem on the boundary of the display area is assisted to be solved.

Drawings

Fig. 1 is a schematic structural diagram of a fixing scheme of a display panel in the related art, in which the display panel is fixed on a middle frame or a back plate of a back plate assembly.

Fig. 2 is a schematic structural view of another fixing scheme of a display panel in the related art, in which the display panel is fixed to an optical film.

Fig. 3 is a cross-sectional view of a display device according to an embodiment of the present invention.

Fig. 4 is an enlarged structure diagram of the layout of fig. 3.

Fig. 5 is an enlarged schematic view of the region a in fig. 4.

Fig. 6 is a schematic diagram of a second bonding structure of a display panel according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of a third bonding structure of a display panel according to an embodiment of the present invention.

Fig. 8 is a schematic diagram of a fourth bonding structure of a display panel according to an embodiment of the present invention.

Fig. 9 is a schematic diagram of a fifth bonding structure of a display panel according to an embodiment of the present invention.

Fig. 10 is a schematic diagram of a sixth bonding structure of a display panel according to an embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a diffusion plate and an optical film according to an embodiment of the present invention.

The reference numerals are explained below:

1/1a/1b, a display panel; 11/11a/11b, non-display area; 12/12a/12b, display area; 13. side sealing glue; 2/2a/2b, optical film; 21. a cutting area; 3/3a/3b, a diffuser plate; 4. transparent glue lines; 5. Shading the rubber thread; 6. a transparent adhesive layer; 7/7a/7b, a back panel assembly; 71. a back plate; 72. a middle frame; 73. an outer frame; 701/701a, a first bearing part; 702/702a, a second bearing part; 8/8a/8b, a light guide; 9/9a/9b, light-shielding tape; 10. a light emitting source.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the related art, the liquid crystal display with a narrow frame has high requirements for fixing the structure of the BM region of the liquid crystal panel, and a currently general scheme is to fix the liquid crystal panel by using transparent UV glue.

Fig. 1 is a schematic structural diagram of a fixing scheme of a display panel 1a in the related art, in which the display panel 1a is fixed on a middle frame or a back plate of a back plate assembly 7 a.

Referring to fig. 1, the display device includes a back board assembly 7a, the back board assembly 7a has supporting and bearing functions, the back board assembly 7a includes a first bearing portion 701a and a second bearing portion 702a, the second bearing portion 702a is located outside the first bearing portion 701a and protrudes forward from the first bearing portion 701a, and the display panel 1a is fixed on the second bearing portion 702 a. In the conventional narrow-frame lcd, the lcd is limited to the non-display area 11a of the display panel 1a, i.e. the BM area is smaller, and the optical film 2a and the diffusion plate 3a are fixed by a full-lamination method. The optical film 2a is located between the display panel 1a and the diffusion plate 3a, and the size of the glass diffusion plate 3a is generally smaller than the display area 12a of the display panel 1 a.

In order to ensure the reliability of the fixation, the diffusion plate 3a needs to be adhered to the center frame or the back plate of the back plate assembly 7a, so that the diffusion plate 3a is adhered and fixed to the first receiving portion 701a by an adhesive. Since the size of the diffusion plate 3a is usually smaller than the display area 12a of the display panel 1a, the bonding surface of the diffusion plate 3a inevitably enters the display area 12a of the display panel 1a, the light is formed into a dark shadow at this position due to the presence of the bonding member, in order to eliminate the influence of the dark shadow on the display device, the diffusion plate 3a is adhered to the light guide member 8a by an adhesive tape, the light guide member 8a is adhered to the first bearing portion 701a of the back plate assembly 7a by the adhesive tape, and the light guide member 8a can change the path of the light, thereby improving the influence caused by the dark shadow.

The bonding of the diffusion plate 3a requires the attachment of the light guide member 8a, which results in a complicated production process and a high production cost. Meanwhile, under the influence of the light guide member 8a, the arrangement of the LEDs is as close as possible to the display area 12a of the display panel 1a to improve the problem of subjective shadows.

Referring to fig. 1, in the present embodiment, the display panel 1a is adhered and fixed on the second carrying surface 702a of the backplane assembly 7a by transparent UV glue, and the transparent UV glue has a light transmission problem. At present, the light is generally shielded by attaching the light shielding tape 9a to the side, but the light shielding tape 9a is likely to fall off or come loose during long-term use, and thus there is a risk of light transmission.

If the glue with the light-shielding property is selected to fix the display panel 1a, the light-transmitting problem cannot occur due to the light-shielding property of the glue, but the BM of the display panel 1a is small, the glue is easily extruded to the display area 12a in the fixing process, and the glue extruded to the display area 12a can cause the shadow problem to occur at the edge of the display panel, so that the display effect is influenced.

Fig. 2 is a schematic structural view of another fixing scheme of the display panel 1b in the related art, in which the display panel 1b is fixed to the optical film 2 b.

Referring to fig. 2, in this embodiment, the optical film 2b and the diffusion plate 3b are also bonded together to fix the optical film 2 b. The non-display region 11b of the display panel 1b is bonded and fixed to the optical film 2 b. The fixed surface of diffuser plate 3b need paste through the sticky tape and lead to light 8b, and light 8b rethread sticky tape is glued and is received the center or the backplate of backplate subassembly 7b on, leads to the production processes complicated, and manufacturing cost is higher.

However, in this scheme, there is a risk of delamination between the films in the optical film 2b, which easily causes the display panel 1b and the diffusion plate 3b to separate from each other, thereby affecting the adhesion reliability of the display edge plate 1b and further leaving a hidden trouble in the structural stability.

The light emitting source 10 is generally disposed on the back plate member 7 b. Due to the transmittance of the light guide member 8b, the light sources 10 need to be arranged as close as possible to the boundary of the display region 12b to improve the subjective dark image problem of the display surface, so the back plate assembly 7b and the display device are generally right-angled in appearance, and the appearance is not beautiful enough.

In this scheme, adopt transparent UV glue to bond equally, have the printing opacity problem in transparent UV glue department. At present, the light is generally shielded by attaching the light shielding tape 9b to the side, but the light shielding tape 9b is likely to fall off or be separated during long-term use, and thus there is a risk of light transmission.

Fig. 3 is a cross-sectional view of a display device according to an embodiment of the present invention. Fig. 4 is an enlarged structure diagram of the layout of fig. 3. Fig. 5 is an enlarged schematic view of the region a in fig. 4.

Referring to fig. 3 to 5, a display device according to an embodiment of the present invention mainly includes a display panel 1, an optical film 2, a diffuser plate 3, a transparent adhesive line 4, a light-shielding adhesive line 5, a transparent adhesive layer 6, and a back plate assembly 7.

For convenience of description, the display surface of the display panel 1 is in a front direction, and a direction opposite to the display surface of the display panel 1 is in a rear direction. The display panel 1 includes a display region 12 and a non-display region 11 located at the periphery of the display region 12, and the non-display region 11 is a BM region.

In some embodiments, a side sealant 13 is disposed on the peripheral side of the display panel 1 and on the outer sidewall of the non-display region 11. The side sealant 13 can shield the non-display region 11 from light, so as to effectively prevent light in the display panel 1 from transmitting from the side of the non-display region 11.

The optical film 2 is disposed in parallel on the back side of the display panel 1, and the optical film 2 includes at least one layer.

In some embodiments of the present application, the optical film 2 may include two films, specifically a prism sheet and a brightness enhancement film.

In other embodiments of the present application, the optical film 3 may include three films, specifically, a diffusion sheet, a prism sheet, and a brightness enhancement sheet.

When the optical film comprises more than two layers of films, the films are bonded and fixed together in a surface fitting mode.

The diffusion plate 3 is attached to the back side of the optical film 2 by surface attachment. The display panel 1, the optical film 2 and the diffusion plate 3 are parallel to each other and form a whole, so that the whole thickness of the display panel 1, the optical film 2 and the diffusion plate 3 after connection can be thinner.

Referring to fig. 5, the size of the optical film 2 is larger than the size of the display area 12 of the display panel 1. The outer boundary of the optical film 2 is located between the inner and outer boundaries of the non-display region 11. I.e. the outer boundary of the optical film 2 is beyond the outer boundary of the display area 12 but still within the outer boundary of the non-display area 11. The outer boundary of the optical film 2 is outside the outer boundary of the display area 12, and can effectively replace the light guide member 8, so that a certain light scattering effect is achieved, and the problem of shadows on the boundary of the display area 12 is solved.

The diffusion plate 3 has a size larger than that of the optical film 2. The outer boundary of the diffusion plate 3 exceeds the outer boundary of the optical film 2, so that the diffusion plate 3 exceeds the area of the outer boundary of the optical film 2 and can be connected with the non-display area 11 of the display panel 1, the display panel 1 can be directly connected with the diffusion plate 3 in a frame pasting mode, the optical film 2 is clamped between the display panel 1 and the diffusion plate 3, and the problem of bonding reliability of the display panel 1 caused by the layering problem of the optical film 2 is solved. Meanwhile, because the size of the diffusion plate 3 is larger than that of the optical film 2, the outer boundary of the diffusion plate 3 can be outside the outer boundary of the display area 12, and can also effectively replace the light guide member 8, so that a certain light scattering effect is achieved, and the problem of shadows on the boundary of the display area 12 is further solved.

Transparent glue line 4 is rectangular form to locate the peripheral outside of optical film piece 2 along the limit, and transparent glue line 4 pastes and locates between the back of non-display area 11 and diffuser plate 3, so that the non-display area 11 that is used for making display panel 1 directly bonds on diffuser plate 3, realizes that display panel 1 and diffuser plate 3's fixed link to each other, and display panel 1 accessible transparent glue line 4 realizes the frame with diffuser plate 3 and pastes the connection promptly. Meanwhile, the transparent adhesive tape 4 can transmit light and can replace the light guide piece 8, so that a certain light scattering effect is achieved, and the problem of shadows on the boundary of the display area 12 can be solved. The transparent glue line 4 can adopt transparent UV glue which can be rapidly cured under the irradiation of a UV lamp. Meanwhile, the transparent UV glue has strong fluidity, and even if the transparent UV glue is diffused under the pressing of the display panel 1 and the diffusion plate 3 and enters the display area 12 of the display panel 1, the display performance of the display area 12 cannot be influenced due to the transparency of the glue.

The shading glue line 5 is in a long strip shape and is attached to the outer side of the transparent glue line 4 along the extending direction of the transparent glue line 4. The shading rubber line 5 can shade the light emitted outwards through the transparent rubber line 4 in the gap between the display panel 1 and the diffusion plate 3, so that the shading effect is achieved, and the problem that the transparent rubber line 4 is light-transmitting is effectively solved. Meanwhile, the shading glue line 5 can assist the transparent glue line 4, so that the non-display area 11 of the display panel 1 can be more stably bonded on the diffusion plate 3, and the firmness of connection between the display panel 1 and the diffusion plate 3 is improved.

The transparent adhesive layer 6 is attached to the back side of the diffuser plate 3 and located at the periphery of the diffuser plate 3. The back plate assembly 7 has a first bearing part 701, and the periphery of the diffusion plate 3 is bonded to the first bearing part 701 of the back plate assembly 7 through a transparent adhesive layer 6, that is, the diffusion plate 3 and the back plate assembly 7 are bonded and fixed in a frame bonding manner. Because the outer boundaries of the optical film 2 and the diffusion plate 3 are outside the outer boundary of the display area 12 of the display panel 1, the transparent adhesive layer 6 can replace the light guide member 8 to play a role of light scattering, and the problem of dark shadows on the display surface boundary is effectively solved. The transparent adhesive layer 6 can adopt transparent UV adhesive.

Referring to fig. 5, in some embodiments, a light-shielding tape 9 is further attached to the outer sides of the diffusion plate 3 and the light-shielding adhesive line 5. The light-shielding tape 9 is located on the periphery of the display panel 1, and the light-shielding tape 9 can cover the light-shielding adhesive line 5 and the outer side wall of the diffusion plate 3, so that light can be shielded effectively, and the light can be prevented from being transmitted out from the side part.

Referring to fig. 4 and 5, in some embodiments, the back plate assembly 7 is disposed at the rear side of the display panel 1 for providing installation space and structural support for the display panel 1 and the diffuser plate 3.

The back plate assembly 7 mainly includes a back plate 71 and a middle frame 72. The back plate 71 is provided at a distance from the display panel 1 and the diffusion plate 3. The middle frame 72 is disposed on the periphery of the back plate 71, and the middle frame 72 and the back plate 71 are connected to form an accommodating cavity, and the light emitting sources 10 may be arranged on the back plate 71 and located inside the accommodating cavity. The light emitting sources 10 may be arranged using, for example, LEDs.

The middle frame 72 has a first bearing part 701 thereon, and the first bearing part 701 is located on the front end surface of the middle frame 72. Namely, the transparent adhesive layer 6 is disposed on the front end surface of the middle frame 72, and the periphery of the diffuser plate 3 is bonded to the first bearing part 701 of the middle frame 72 through the transparent adhesive layer 6.

After the problem of the dark shadow at the boundary of the display surface is solved, the arrangement of the LEDs can extend towards the inside of the accommodating cavity. Therefore, the middle frame 72 can be formed by bending the edge of the back plate 71 and extending forward obliquely, that is, the cross section of the middle frame 72 can form an inclined plane structure, so as to better enhance the appearance of the display device, and the appearance of the display device can be optimized, and at the moment, the LEDs are still arranged on the back plate 71.

It is understood that the back plate 71 and the middle frame 72 may be detachably connected to each other or may be integrally formed. When the back plate 71 and the middle frame 72 are integrally formed, that is, the structure is equivalent to only the back plate 71 and the middle frame 72 is absent, in this case, the first bearing portion 701 is disposed on the back plate 71, and the peripheral edge of the diffuser plate 3 is bonded to the first bearing portion 701 of the back plate 71 through the transparent adhesive layer 6.

In some embodiments, the backplate assembly 7 includes an outer frame 73. The outer frame 73 covers the outer side of the middle frame 72 or the outer side of the edge of the back plate 71. Meanwhile, the outer frame 73 can extend to the peripheral sides of the diffusion plate 3 and the display panel 1 to effectively protect the diffusion plate 3 and the display panel 1. In addition, the outer frame 73 can sandwich the light-shielding tape 9 between the display panel 1 and the outer frame 73, thereby effectively preventing the light-shielding tape 9 from falling off or preventing the layout from being stripped.

Fig. 6 is a schematic diagram of a second bonding structure of the display panel 1 according to the embodiment of the present invention.

The bonding structure of the display panel 1 of the present embodiment is basically the same as the bonding structure of the display panel 1 in fig. 7, and the difference is that the structure and the distribution position of the light-shielding adhesive lines 5 are different.

In this embodiment, the light-shielding adhesive line 5 and the transparent adhesive line 4 are arranged side by side on the back surface of the non-display area 11 of the display panel 1. Namely, the light-shielding rubber line 5 and the transparent rubber line 4 are both clamped between the non-display area 11 and the diffusion plate 3.

The shading glue line 5 can adopt lightproof UV glue, the lightproof UV glue can be rapidly cured under the irradiation of a UV lamp, and can be partially pressed between the side sealing glue 13 and the diffusion plate 3 of the display panel 1, so that the shading glue line 5 is fixedly connected with the side sealing glue 13 of the display panel 1, the shading is carried out on the side portions of the display panel 1 and the transparent glue line 4 together, and the firmness of connection between the display panel 1 and the diffusion plate 3 can be increased.

The shading glue line 5 can adopt black UV glue, and can also be provided with other colors and UV glue capable of shading according to needs so as to enrich the appearance of the display panel 1.

The transparent adhesive line 4 is closer to the display area 12 than the light-shielding adhesive line 5, and the transparent adhesive line 4 can partially dip into the display area 12 without affecting the display performance of the display area 12.

The transparent glue lines 4 can also play a role of a dam after being irradiated and cured so as to prevent the black shading glue lines 5 or shading glue lines 5 with other colors from permeating into the display area 12 to influence the display performance.

Fig. 7 is a schematic diagram of a third bonding structure of the display panel 1 according to the embodiment of the present invention.

The bonding structure of the display panel 1 of the present embodiment is basically the same as the bonding structure of the display panel 1 in fig. 5, and the difference is that the structure and the distribution position of the light-shielding glue lines 5 are different.

In this embodiment, the light-shielding adhesive line 5 is laterally sprayed on the outer side of the transparent adhesive line 4 in a side-spraying manner to form a light-shielding coating. The shading coating is attached to the outer side of the transparent adhesive tape 4 side by side. The shading coating can adopt hot melt adhesive, and the hot melt adhesive can be sprayed to the outside of the transparent adhesive line 4 after being heated, and can be rapidly solidified after being cooled.

The transparent adhesive lines 4 are positioned in the non-display area 11 and have an adhesive function. And the shading coating covers the outer side of the transparent rubber thread 4 and mainly plays a role in shading light.

In some embodiments, the front end of the light-shielding coating extends to the side-sealing adhesive 13 of the display panel 1, and the rear end of the light-shielding coating can extend to cover the outer side wall of the diffuser plate 3 and the outer side of the transparent adhesive layer 6, so as to cooperate with the side-sealing adhesive 13 to perform full-coverage light shielding on the outer sides of the display panel 1, the transparent adhesive line 4, the diffuser plate 3 and the transparent adhesive layer 6, thereby improving the side light-shielding effect of the display device, facilitating the default light-shielding adhesive tape 9 and the outer frame 73, simplifying the structure and the process of the display device, and facilitating the preparation of the frameless display device.

Fig. 8 is a schematic diagram of a fourth bonding structure of the display panel 1 according to the embodiment of the present invention.

The display device of the present embodiment is similar to the display device of fig. 7 in basic structure, except that the structure of the backplane assembly 7 is different and the bonding structure of the display panel 1 is different.

The backboard assembly 7 has a first bearing part 701 and a second bearing part 702 protruding from the front side of the first bearing part 701. A step structure is formed between the first bearing part 701 and the second bearing part 702. The first receiving portion 701 and the second receiving portion 702 may be provided on the center frame 72 or may be directly provided on the back plate 71.

The periphery of the diffuser plate 3 is bonded to the step structure, and is bonded to the first bearing part 701 through the transparent adhesive layer 6 via the fixing surface of the diffuser plate 3. Because the outer boundaries of the diffusion plate 3 and the optical film 2 are located outside the display area 12, the transparent adhesive layer 6 can be used to replace the light guide member 8, so as to solve the problem of the dark shadow of the display area 12.

The outer boundary of the diffuser plate 3 is within the outer boundary of the non-display area 11, so that the second carrying portion 702 of the backplate assembly 7 can extend into and distribute on the back side of the non-display area 11. When the transparent adhesive tape 4 is adhered between the back surface of the non-display area 11 and the diffuser plate 3, a part of the transparent adhesive tape 4 can be adhered between the back surface of the non-display area 11 and the second bearing part 702; and the non-display area 11 of the display panel 1 is bonded to the diffusion plate 3 and the back plate assembly 7 at the same time, so as to improve the bonding firmness of the display panel 1.

The shading rubber thread 5 is sprayed on the outer side of the transparent rubber thread 4 in a spraying mode to form a shading coating, and the shading function of the transparent rubber thread 4 is achieved.

In the present embodiment, the front end of the light shielding coating is partially adhered to the back surface of the non-display region 11, and partially adhered to the side seal 13 outside the display panel 1. The rear end of the light shielding coating is adhered to the second carrier part 702. The side sealing adhesive 13, the shading coating and the step structure of the back plate assembly 7 are matched, so that the display panel 1, the transparent adhesive line 4, the diffusion plate 3 and the outer side of the transparent adhesive layer 6 can be completely covered and shaded, and the shading effect of the side part of the display device is improved.

Fig. 9 is a schematic diagram of a fifth bonding structure of the display panel 1 according to the embodiment of the present invention.

The structure of the backplate assembly 7 of the display device of this embodiment is similar to that of the backplate assembly 7 of the display device in fig. 8, except that the display device of this embodiment only solves the problem of light shielding, so the light guide 8 is still used to connect the diffusion plate 3 and the backplate assembly 7.

In this embodiment, the backboard assembly 7 has a first bearing part 701 and a second bearing part 702 protruding from the front side of the first bearing part 701. The periphery of the diffusion plate 3 is bonded to the first receiving portion 701 of the back plate assembly 7 via the light guide member 8.

The transparent adhesive tape 4 is attached between the back surface of the non-display area 11 and the second carrying portion 702 of the back plate assembly 7. The light-shielding adhesive lines 5 are attached to the outer sides of the transparent adhesive lines 4 side by side, and the light-shielding adhesive lines 5 are also attached between the back surface of the non-display area 11 and the second bearing portion 702 of the back panel assembly 7. The transparent glue line 4 is made of transparent UV glue, and the shading glue line 5 is made of black UV glue or shading UV glue with other colors.

The shading glue line 5 can partially extend and adhere to the side sealing glue 13 on the outer side of the display panel 1, so that the side sealing glue 13 and the shading glue line 5 can be matched with the step structure of the back plate assembly 7 to carry out full-coverage shading on the outer sides of the display panel 1, the transparent glue line 4, the diffusion plate 3 and the light guide piece 8 together, and further the problem of light transmission of the side part of the display device is solved.

Fig. 10 is a schematic diagram of a sixth bonding structure of the display panel 1 according to the embodiment of the present invention.

The display device of this embodiment is basically the same as the display device in fig. 9, except that the structure and distribution positions of the light-shielding adhesive lines 5 are different.

In this embodiment, the light-shielding adhesive line 5 is made of hot melt adhesive and is sprayed on the outer side of the transparent adhesive line 4 in a side spraying manner to form a light-shielding coating. The shading coating is attached to the outer side of the transparent adhesive tape 4 side by side.

The transparent adhesive line 4 is located between the non-display area 11 and the second carrying portion 702 of the backplane assembly 7, and plays a role in adhesion. The shading coating covers the outer side of the transparent adhesive tape 4, mainly plays a role in shading light, and can also assist the transparent adhesive tape 4 to a certain extent to bond the non-display area 11 of the display panel 1 on the back panel assembly 7.

Fig. 11 is a schematic structural diagram of the diffusion plate 3 and the optical film 2 according to the embodiment of the present invention.

Referring to fig. 11, the diffusion plate 3 and the optical film 2 may be fully attached to each other, so that the diffusion plate 3 and the optical film 2 are integrally attached to each other. And cutting off the partial optical film 2 along the periphery of the diffusion plate 3 to form a cutting area 21 at the edge of the optical film 2, so that the outer boundary of the diffusion plate 3 exceeds the outer boundary of the optical film 2, the bonding process of the diffusion plate 3 and the optical film 2 can be simplified, and the bonding precision between the diffusion plate 3 and the optical film 2 can be improved.

the utility model discloses among the display device, utilize optics diaphragm 2, diffuser plate 3 and display panel 1 cooperation, the outer boundary of optics diaphragm 2 surpasss display panel 1's display area 12, and be located between non-display area 11's inner boundary and the outer boundary, diffuser plate 3's outer boundary surpasss optics diaphragm 2's outer boundary simultaneously, so can replace leaded light 8 effectively to play the astigmatism effect, solve the shadow problem on display surface boundary, and then realize display panel 11's bonding structure's optimization, simplify the production process, and the production cost is reduced. Meanwhile, the transparent glue line can bond and fix the display panel on the diffusion plate, the problem of bonding reliability of the display panel 1 caused by the layering problem of the optical film is effectively solved, the transparent glue line can transmit light and also can play a certain light scattering role, and the problem of shadows on the boundary of the display area is solved in an auxiliary mode.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A display device, comprising:

the display panel is used for displaying images on the front surface and comprises a display area and a non-display area located on the periphery of the display area;

the optical film is arranged on the back side of the display panel, and the outer boundary of the optical film is positioned between the inner boundary and the outer boundary of the non-display area;

the diffusion plate is attached to the back side of the optical film, and the outer boundary of the diffusion plate exceeds the outer boundary of the optical film; and

and the transparent adhesive line is positioned on the outer side of the optical film and is attached between the non-display area and the diffusion plate.

2. The display device of claim 1, further comprising a backplane assembly and a layer of clear adhesive;

the back plate assembly is provided with a first bonding surface;

the periphery of the diffusion plate is bonded on the first bonding surface through the transparent adhesive layer.

3. The display device of claim 2, wherein the backplane assembly has a second adhesive surface, the second adhesive surface protruding from a front side of the first adhesive surface;

the outer boundary of the diffusion plate does not exceed the outer boundary of the display panel;

the non-display area is bonded on the second bonding surface through the transparent adhesive tape.

4. The display device of claim 2, wherein the transparent adhesive lines and the transparent adhesive layer are both transparent UV adhesive.

5. The display device of claim 1, further comprising a light blocking glue line;

the shading glue line is arranged on the outer side of the transparent glue line in a sticking mode along the extending direction of the transparent glue line, and the shading glue line can shade light rays emitted outwards through the transparent glue line.

6. The display device according to claim 5, wherein the light-shielding adhesive line and the transparent adhesive line are attached to a back surface of the non-display area side by side.

7. The display device according to claim 5, wherein the light shielding glue line is a light shielding coating sprayed on the outer side of the transparent glue line.

8. The display device of claim 7, wherein the light blocking coating coats a peripheral sidewall of the diffuser plate.

9. The display device of claim 5, further comprising a light blocking tape; the shading adhesive tape is located on the periphery of the display panel and is attached to the outer side of the shading adhesive line.

10. The display device as claimed in claim 9, wherein the display device further comprises a frame, the frame is disposed at intervals around the display panel, and the light-shielding tape is sandwiched between the display panel and the frame.