CN218497301U - Display device - Google Patents

Abstract

The utility model provides a display device, relates to display screen technical field for solve when installing diffuser plate and optics diaphragm in the draw-in groove, the higher problem of the installation degree of difficulty. The back plate is provided with an opening, and a groove is formed at the edge of the opening; the edge of the diffusion plate extends into the groove, the diffusion plate is provided with a light-emitting surface, and the light-emitting surface comprises a first edge area and a second edge area which are oppositely arranged; the edge of the optical film extends into the groove, the optical film is located on one side where the light-emitting surface of the diffusion plate is located, the surface, opposite to the light-emitting surface, of the optical film is a first surface, the first surface comprises a fifth edge area and a sixth edge area which are oppositely arranged, the first edge area is opposite to the fifth edge area, and the second edge area is opposite to the sixth edge area; an adhering part is arranged between the first edge area and the fifth edge area, and an adhering part is arranged between the second edge area and the sixth edge area. The application is used for displaying images.

Description

Display device

Technical Field

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

Background

A display device such as a television is widely used in life as an electronic product. The display device mainly comprises a back plate, an optical diaphragm, a diffusion plate and a panel, wherein an opening is formed in the back plate, a clamping groove is formed in the edge of the opening and is arranged around the opening in a circle, the edge of the diffusion plate and the edge of the optical diaphragm are clamped in the clamping groove, the optical diaphragm is arranged on the light emitting side of the diffusion plate, and the panel is covered at the opening to realize the assembly of the display device.

In the related art, in order to facilitate the edges of the optical film and the diffusion plate to be clamped in the clamping grooves, the top side of the optical film and the top side of the diffusion plate are generally fixed together by using a double-sided adhesive tape, and then the diffusion plate and the optical film are slightly bent downward from the left and right sides of the diffusion plate and the optical film, so that the diffusion plate and the optical film are in a bent state, and then the edges of the diffusion plate and the optical film are clamped in the clamping grooves.

However, when the optical film and the diffusion plate are bent, the left side and the right side of the optical film are separated from the left side and the right side of the diffusion plate, that is, the left side and the right side of the optical film are tilted relative to the left side and the right side of the diffusion plate, so that the installation difficulty is high.

SUMMERY OF THE UTILITY MODEL

The application provides a display device for solve and installing diffuser plate and optics diaphragm in the draw-in groove, the higher problem of the installation degree of difficulty.

The application provides a display device, which comprises a back plate, a diffusion plate, an optical membrane and a pasting part, wherein the back plate is provided with an opening, a groove is formed at the edge of the opening, the groove is arranged along the periphery of the opening, and the notch of the groove faces the inner side of the opening; the edge of the diffusion plate extends into the groove, the diffusion plate is provided with a light-emitting surface, and the light-emitting surface comprises a first edge area and a second edge area which are oppositely arranged; the edge of the optical film extends into the groove, the optical film is positioned on one side where the light-emitting surface of the diffusion plate is positioned, the surface, opposite to the light-emitting surface, of the optical film is a first surface, the first surface comprises a fifth edge area and a sixth edge area which are oppositely arranged, the first edge area is opposite to the fifth edge area, and the second edge area is opposite to the sixth edge area; an adhering part is arranged between the first edge area and the fifth edge area and is fixed by the adhering part in an adhesive mode, and an adhering part is arranged between the second edge area and the sixth edge area and is fixed by the adhering part in an adhesive mode.

The display device in this application, stretch into the recess with the border of diffuser plate in, set up the optics diaphragm in the light-emitting side of diffuser plate to make the border of optics diaphragm stretch into in the recess, in order to form display device.

Because the first edge area and the fifth edge area are adhered together through the adhering part, and the second edge area and the sixth edge area are adhered together through the adhering part, when the optical film and the diffusion plate are installed in the groove, even if the optical film and the diffusion plate are bent, the left side and the right side of the optical film (the side where the first edge area is located and the side where the fifth edge area is located) and the left side and the right side of the diffusion plate (the side where the second edge area is located and the side where the sixth edge area is located) cannot be separated under the action of the adhering part, so that the left side and the right side of the optical film can be prevented from being warped relative to the left side and the right side of the diffusion plate. Can conveniently block into the recess with the border of optics diaphragm and diffuser plate together in, can reduce the degree of difficulty of installation.

In some embodiments of the present application, a perpendicular projection of the pasting part on the first edge area coincides with the first edge area, and a perpendicular projection of the pasting part on the fifth edge area coincides with the fifth edge area. The first edge area and the fifth edge area are completely fixed together by means of an adhesive portion.

In some embodiments of the present application, a perpendicular projection of the paste portion on the second edge region coincides with the second edge region, and a perpendicular projection of the paste portion on the sixth edge region coincides with the sixth edge region. The second edge region and the sixth edge region are completely fixed together by the adhesive.

In some embodiments of the present disclosure, the first edge region extends along the first direction from a first side of the light exit surface to a second side of the light exit surface, the first side of the light exit surface being opposite to the second side of the light exit surface; the fifth edge region extends in the first direction from a first side edge of the first surface to a second side edge of the first surface, the first side edge of the first surface being opposite the second side edge of the first surface. The firmness of adhesion between the diffusion plate and the optical film is improved.

In some embodiments of the present application, the second edge region extends from the first side of the light emitting surface to the second side of the light emitting surface along the second direction; the sixth edge region extends from the first side edge of the first surface to the second side edge of the first surface along the second direction. The firmness of adhesion between the diffusion plate and the optical film is improved.

In some embodiments of the present application, the first direction is parallel to the second direction. The sticking part is convenient to arrange.

In some embodiments of the present application, the pasting part includes a substrate, a first colloid and a second colloid, the first colloid is coated on a surface of a side of the substrate facing the light emitting surface; the second colloid is coated on the surface of one side of the substrate facing the first surface. Fixing is carried out by using double-sided adhesive tape.

In some embodiments of the present application, the adhesion force of the first colloid is greater than that of the second colloid. When the optical diaphragm expands with heat and contracts with cold, the second colloid can lose efficacy, so that the left side and the right side of the optical diaphragm are separated from the left side and the right side of the diffusion plate, the force generated by the expansion with heat and the contraction with cold is released, and the wrinkling of the optical diaphragm is avoided.

In some embodiments of the present application, the first colloid is composed of acrylic gel and the second colloid is composed of silicone gel. Acrylic acid glue with high viscosity is selected, and silica gel with low viscosity is utilized.

In some embodiments of the present application, the substrate is a polyethylene terephthalate material. The substrate was made of polyethylene terephthalate.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.

Fig. 1 is a schematic diagram of a first external structure of a display device according to an embodiment of the present disclosure;

fig. 2 is a first schematic cross-sectional view of a display device provided in an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of a back plate and a groove provided in the present application;

fig. 4 is a schematic sectional view of a display device provided in the related art;

fig. 5 is a schematic view of a first external structure of a display device provided in the related art;

fig. 6 is a schematic view of a second external structure of a display device provided in the related art;

fig. 7 is a schematic external structural view of a diffuser plate according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram illustrating an external structure of an optical film according to an embodiment of the present disclosure;

fig. 9 is a second schematic cross-sectional view of a display device provided in an embodiment of the present application;

FIG. 10 is an enlarged view of a portion of FIG. 9 at A;

fig. 11 is a schematic view of a third external structure of a display device provided in the related art;

fig. 12 is a third schematic cross-sectional view of a display device provided in an embodiment of the present application;

fig. 13 is a fourth schematic cross-sectional view of a display device provided in an embodiment of the present application;

fig. 14 is a fifth cross-sectional view of a display device according to an embodiment of the present application;

fig. 15 is a sixth schematic cross-sectional view of a display device according to an embodiment of the present application;

fig. 16 is a schematic diagram illustrating a second external structure of a display device according to an embodiment of the present application;

fig. 17 is a schematic diagram illustrating a third external structure of a display device according to an embodiment of the present application;

fig. 18 is a schematic diagram illustrating a fourth external structure of a display device according to an embodiment of the present application;

fig. 19 is a schematic diagram of a fifth external structure of a display device according to an embodiment of the present application;

fig. 20 is a schematic diagram of a sixth external structure of a display device according to an embodiment of the present application.

Reference numerals: 10-a display device; 100-a back plate; 110-an opening; 111-grooves; 120-a first plate; 130-a second panel; 140-a third panel; 200-a diffusion plate; 210-a light-emitting surface; 21 a-first day side; 21 b-first ground side; 21 c-first left side; 21 d-first right side; 211-a first edge region; 212-a second edge region; 213-third edge region; 300-an optical film; 310-a first surface; 31 a-day two; 31 b-a second ground side; 31 c-second left; 31 d-second right side; 311-fifth edge region; 312-sixth edge area; 313-a seventh border area; 400-a panel; 500-a light source; 600-fixing adhesive tape; 700-a sticking portion; 710-a substrate; 720-first colloid; 730-second colloid.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise. 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 addition, when a pipeline is described, the terms "connected" and "connected" are used in this application to have a meaning of conducting. The specific meaning is to be understood in conjunction with the context.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

A television is widely used in daily life as an electronic product, and people can watch various programs through the television.

Based on this, as shown in fig. 1, the present application provides a display device 10, and the display device 10 may be a television, as shown in fig. 2, which includes a back plate 100, a diffusion plate 200, an optical film 300, a panel 400, and a light source 500. The back plate 100 is provided with an opening 110, a groove 111 is formed at the edge of the opening 110, the groove 111 surrounds the opening 110, and the notch of the groove 111 faces the inner side of the opening 110; the edge of the diffusion plate 200 is extended into the groove 111; extending the edge of the optical film 300 into the groove 111, and making the optical film 300 located at the light-emitting side of the diffusion plate 200; the panel 400 is disposed at the opening 110 and located on a side of the optical film 300 away from the diffusion plate 200, for example, the panel 400 may be a liquid crystal display panel; the light source 500 is disposed in the back plate 100 and on the light incident side of the diffusion plate 200 to provide a light source for the optical film 300.

First, the light source 500 is disposed in the back plate 100, then the edge of the diffusion plate 200 and the edge of the optical film 300 are extended into the groove 111, the diffusion plate 200 and the optical film 300 are clamped in the groove 111, and then the optical film 300 is covered on the side of the optical film 300 away from the diffusion plate 200, so as to assemble the display device 10. The light source 500, the diffusion plate 200, and the optical film 300 are coupled to realize a screen display, and the optical film 300 is protected by the panel 400.

It can be understood that the display device 10 at present stage is generally square, and the opening 110, the diffusion plate 200, the optical film 300 and the display panel 400 are all square structures in order to fit the square structure.

The light source 500 may be a light emitting diode, a cold cathode fluorescent tube, or the like, and of course, other types of light sources 500 may also be adopted as the light source 500, which is not particularly limited in this application.

In addition, in order to form the groove 111 at the edge of the opening 110, as shown in fig. 3, the display device 10 provided by the present application further includes a first plate 120, a second plate 130, and a third plate 140, where the first plate 120, the second plate 130, and the third plate 140 are sequentially connected, the first plate 120 is connected to the edge of the opening 110, the first plate 120 is disposed around the opening 110, and the first plate 120 extends in a direction away from the inside of the opening 110 and parallel to the horizontal plane; the second plate 130 is arranged around the opening 110, and the second plate 130 extends away from the horizontal plane and is perpendicular to the horizontal plane; the third plate 140 is disposed around the opening 110, and the third plate 140 is close to the inner side of the opening 110 and extends in a direction parallel to the horizontal plane to form a groove 111.

The groove 111 is defined by the first plate 120, the second plate 130 and the third plate 140, and the first plate 120 is connected to the edge of the opening 110, so that the groove 111 is formed at the edge of the opening 110, and the diffusion plate 200 and the optical film 300 are clamped in the groove 111, thereby assembling the display device 10.

In this case, the panel 400 may be fixed to the third plate 140 by using glue, for example, structural glue, or may be fixed by using other glue, which is not particularly limited in this application.

On this basis, in order to facilitate the installation of the optical film 300 and the diffusion plate 200 into the groove 111, the portion of the groove 111 located on the ground side of the display device 10 is generally divided into two parts arranged in sequence in a direction perpendicular to the plane of the opening 110, that is, the portion of the first plate 120, the second plate 130, and the third plate 140 located on the ground side is divided into two parts, specifically, the portion of the second plate 130 and the third plate 140 located on the ground side includes a bottom flap and a pressing plate, the bottom flap is located on the back side of the housing 100, the edge of the bottom flap away from the housing 100 extends in a direction away from the housing 100 to form a recess, the edge of the bottom flap away from the housing 100 is located at a distance from the first plate 120 that is smaller than the distance from the edge of the second plate 130 away from the housing 100 to the first plate 120, such that the groove 111 is located on the left and right sides of the display device 10 and the position close to the ground side communicates with the recess, thereby, when the optical film 300 and the diffusion plate 200 are installed, the groove 300 and the pressing plate 200 are located in the direction of the display device 10, and then the groove 111 and the groove 111 is located in the direction perpendicular to the opening of the display device 10, thereby facilitating the installation of the optical film 300 and the diffusion plate 200.

For convenience of processing, the back plate 100, the first plate 120, the second plate 130 and the third plate 140 may be processed into an integrally formed structure, so that not only is secondary processing not required, but also the structural strength of the whole of the back plate 100, the first plate 120, the second plate 130 and the third plate 140 may be enhanced.

Of course, the first plate 120, the second plate 130, and the third plate 140 may be separated from the back plate 100, the first plate 120, the second plate 130, and the third plate 140 are machined, and then the first plate 120 is welded to the edge of the opening 110 by using welding or other techniques.

In some embodiments, in order to form the groove 111 at the edge of the opening 110, the groove 111 may be directly opened on the surface of the edge of the opening 110.

On this basis, in order to enable the diffusion plate 200 and the optical film 300 to be stably disposed in the recess 111, the edge of the diffusion plate 200 and the edge of the optical film 300 should be brought into contact with the bottom wall of the recess 111 as much as possible to chuck the diffusion plate 200 and the optical film 300 by the recess, and therefore, when designing the optical film 300 and the diffusion plate 200, it is necessary to make the width dimensions of the optical film 300 and the diffusion plate 200 (the dimensions of the optical film 300 and the diffusion plate 200 in the direction from the left side of the display device 10 to the right side of the display device 10) as much as possible consistent with the dimensions when the optical film 300 and the diffusion plate 200 are brought into contact with the bottom wall of the recess 111 in an ideal state. In this case, however, when the optical film and the diffusion plate are mounted, the edges of the optical film 300 and the diffusion plate 200 may collide with the first plate 120, the second plate 130, or the third plate 140, and the mounting difficulty is high.

Therefore, in actual installation, the diffusion plate 200 and the optical film 300 are generally bent downward at the left and right sides, and then the diffusion plate 200 and the optical film 300 are installed into the groove 111 in a direction toward the day side of the display device 10 along the ground side of the display device 10.

In order to prevent the diffusion plate 200 and the optical film 300 from relatively moving in the groove 111, in the related art, there is provided a display device 10, as shown in fig. 4, including a back plate 100, a diffusion plate 200, and an optical film 300, as shown in fig. 5, and further including a fixing tape 600.

The back plate 100 is provided with an opening 110, a groove 111 is formed at the edge of the opening 110, the groove 111 surrounds the opening 110, and the notch of the groove 111 faces the inner side of the opening 110; the edge of the diffusion plate 200 extends into the groove 111, the diffusion plate 200 has a light emitting surface 210, as shown in fig. 5, the light emitting surface 210 includes a first antenna side 21a, a first ground side 21b, a first left side 21c, and a first right side 21d; extending the edge of the optical film 300 into the groove 111, and positioning the optical film 300 on the light emitting side of the diffuser 200, as shown in fig. 6, a first surface 310 is on the optical film 300 opposite to the light emitting surface 210, and the first surface 310 includes a second day side 31a, a second ground side 31b, a second left side 31c, and a second right side 31d; the first day side 21a is opposite to the second day side 31a, the first ground side 21b is opposite to the second ground side 31b, the first left side 21c is opposite to the second left side 31c, and the first right side 21d is opposite to the second right side 31 d.

As shown in fig. 6, the fixing tape 600 is stuck between the first day side 21a (the rear side of the second day side 31a in fig. 6) and the second day side 31a, and the first day side 21a and the second day side 31a are fixed together by the fixing tape 600, thereby fixing the optical film sheet 300 and the diffusion plate 200. Then, the left edge (the side where the first left side 21c is located) of the diffusion plate 200 and the left edge (the side where the second left side 31c is located) of the optical film 300, the right edge (the side where the first right side 21d is located) of the diffusion plate 200 and the right edge (the side where the second right side 31d is located) of the optical film 300 are bent downward, so that the edge of the diffusion plate 200 and the edge of the optical film 300 are inserted into the groove 111, and finally, the assembly of the display device 10 is achieved.

However, when the optical film 300 and the diffusion plate 200 are bent, as shown in fig. 4, the left and right sides of the optical film 300 are separated from the left and right sides of the diffusion plate 200, that is, the left and right sides of the optical film 300 are tilted with respect to the left and right sides of the diffusion plate 200, which makes the installation difficult.

Based on this, as shown in fig. 7, the diffusion plate 200 provided in the present application has a light emitting surface 210, where the light emitting surface 210 includes a first edge region 211 and a second edge region 212 that are disposed opposite to each other; as shown in fig. 8, a surface of the optical film 300 opposite to the light emitting surface 210 is a first surface 310, the first surface 310 includes a fifth edge region 311 and a sixth edge region 312, which are oppositely disposed, the first edge region 211 is opposite to the fifth edge region 311, and the second edge region 212 is opposite to the sixth edge region 312; as shown in fig. 8, the display device 10 provided by the present application further includes an adhering portion 700, wherein the adhering portion 700 is disposed between the first edge region 211 and the fifth edge region 311 and is fixed by the adhering portion 700, and the adhering portion 700 is disposed between the second edge region 212 and the sixth edge region 312 and is fixed by the adhering portion 700.

As shown in fig. 9, since the first edge region 211 and the fifth edge region are adhered together by the adhering portion 700 and the second edge region 212 and the sixth edge region 312 are adhered together by the adhering portion 700, even if the left and right sides of the optical film 300 and the left and right sides of the diffusion plate 200 are bent downward when the optical film 300 and the diffusion plate 200 are mounted in the recess 111, as shown in fig. 10, the left and right sides of the optical film 300 (the side where the first edge region 211 is located and the side where the fifth edge region 311 is located) and the left and right sides of the diffusion plate 200 (the side where the second edge region 212 is located and the side where the sixth edge region 312 is located) are not separated from each other by the adhering portion 700, so that the left and right sides of the optical film 300 are prevented from being warped with respect to the left and right sides of the diffusion plate 200. The edge of the optical film 300 and the edge of the diffusion plate 200 can be conveniently clamped into the groove 111, and the mounting difficulty can be reduced.

In addition, since the related art only fixes the first day side 21a and the second day side 31a, as shown in fig. 11, during transportation of the display device 10, the optical film 300 may move toward the panel 400, and thus if the optical film 300 is shaken violently, the optical film 300 may easily collide with the panel 400, which may damage the optical film 300 and the panel 400.

In the present disclosure, the first edge area 211 and the second edge area 212, which are disposed opposite to the diffusion plate 200, and the fifth edge area 311 and the sixth edge area 312, which are disposed opposite to the optical film 300, are fixed together, so that the left and right sides of the optical film 300 are adhered by the adhering portion 700 during the shaking process, as shown in fig. 12, the movement range of the optical film 300 in the direction approaching the panel 400 can be reduced, the risk of abrasion between the optical film 300 and the panel 400 can be reduced, and the optical film 300 and the panel 400 are protected from being damaged.

The first edge region 211 and the second edge region 212 refer to regions located at the periphery of the light emitting surface 210, and the shape and size of the first edge region may be any suitable shape, such as a rectangle, a square, or a circle. Fifth edge region 311 and sixth edge region 312 refer to regions located at the periphery of first surface 310, and may be any suitable shape and size, such as rectangular, square, or circular.

For example, as shown in fig. 13, the pasting part 700 may include a substrate 710, a first colloid 720 and a second colloid 730, wherein the first colloid 720 is coated on a side surface of the substrate 710 facing the light emitting surface 210; the second colloid 730 is coated on a surface of the substrate 710 facing the first surface 310.

The diffusion plate 200 is adhered to the base material 710 by the first colloid 720 and the optical film 300 is adhered to the base material 710 by the second colloid 730 by respectively coating the first colloid 720 and the second colloid 730 on both sides of the base material 710, so that the optical film 300 and the diffusion plate 200 are adhered together. That is, the optical module is adhered to the diffusion plate 200 by the double-sided adhesive tape (the base material 710, the first adhesive body 720 and the second adhesive body 730) to realize fixation.

The base material 710 may be made of Polyethylene Glycol Terephthalate (PET) material, and the Polyethylene Glycol Terephthalate material has good mechanical properties, impact resistance, good bending performance, and high temperature resistance, and is suitable for the application scenario in the present application.

Alternatively, the substrate 710 may be made of tissue paper, non-woven fabric, foam, or the like.

Illustratively, the pasting part 700 may also be glue, and the first edge region 211 and the fifth edge region 311 are pasted together and the second edge region 212 and the sixth edge region 312 are pasted together directly by using glue.

When the optical film 300 and the diffusion plate 200 are installed in the recess 111, the temperature of the optical film 300 and the diffusion plate 200 may increase when the display device 10 is operated, or in summer, and the temperature of the optical film 300 and the diffusion plate 200 may decrease in winter.

Stress may exist inside the optical film 300 and the diffusion plate 200 due to thermal expansion and contraction, and since the adhesion portion 700 is adhered between the first edge region 211 and the fifth edge region 311 and the adhesion portion 700 is adhered between the second edge region 212 and the sixth edge region 312, the stress inside the optical film 300 is difficult to release, and in the past, the optical film 300 may wrinkle, which may affect the display.

In order to solve the above problem, the adhesion force of the first encapsulant 720 is greater than that of the second encapsulant 730.

As shown in fig. 14, when the optical film 300 and the diffusion plate 200 expand due to heat and tend to expand to the outside, since the expansion coefficient of the optical film 300 is different from that of the diffusion plate 200, the expansion stress on the optical film 300 is different from that on the diffusion plate 200, and thus the optical film 300 and the diffusion plate 200 have an interaction force therebetween, and since the adhesion force of the first colloid 720 is greater than that of the second colloid 730, the second colloid 730 having a lower adhesion force and contacting the optical film 300 fails due to the interaction force therebetween, so that the left and right sides of the optical film 300 are separated from the second colloid 730, and the expansion stress on the optical film 300 is released to the outside from the edge thereof, thereby preventing the optical film 300 from wrinkling. Since the adhesion force of the first colloid 720 is greater than that of the second colloid 730, the first colloid 720 has stronger adhesion force and is not separated from the diffusion plate 200, so that the adhesion part 700 is prevented from being in a free state between the diffusion plate 200 and the optical film 300.

Similarly, as shown in fig. 15, when the optical film 300 shrinks due to cold and has a tendency to shrink inward, since the shrinkage coefficient of the optical film 300 is different from that of the diffusion plate 200, the shrinkage stress on the optical film 300 is different from that on the diffusion plate 200, so that an interaction force exists between the optical film 300 and the diffusion plate 200, and since the adhesion force of the first colloid 720 is greater than that of the second colloid 730, the second colloid 730 with a lower adhesion force contacting the optical film 300 fails under the interaction force between the two, so that the left and right sides of the optical film 300 are separated from the second colloid 730, and the shrinkage stress on the optical film 300 is released to the outside from the edge of the optical film 300, thereby preventing the optical film 300 from wrinkling. Since the adhesive force of the first encapsulant 720 is greater than that of the second encapsulant 730, the first encapsulant 720 is not separated from the diffuser 200, and the bonding portion 700 is prevented from being free between the diffuser 200 and the optical film 300.

For example, the reference value of the adhesive force of the first colloid 720 is between 13N/25mm and 16N/25mm, for example, 14.7N/25mm, and the reference value of the adhesive force of the second colloid 730 is between 7N/25mm and 8N/25mm, for example, 7.5N/25mm. Through many times of experiments, when the adhesion reference value of the first colloid 720 is in the above range, and the adhesion reference value of the second colloid 730 is in the above range, the first colloid 720 and the second colloid 730 are more suitable for the temperature environment in the display device 10, the first colloid 720 can be continuously adhered and fixed with the diffusion plate 200, the second colloid 730 can be heated or cooled to be separated from the optical film 300, so that the optical film 300 can be ensured not to wrinkle.

Here, N/25mm is the amount of force required to pull the 25mm wide adhesive part 700.

On this basis, in order to satisfy the condition that the adhesive force of the first colloid 720 is greater than that of the second colloid 730, the first colloid 720 is composed of acrylic glue, and the second colloid 730 is composed of silica gel. Because the adhesion benchmark of acrylic acid glue is 14.7N/25mm, the adhesion benchmark of silica gel is 7.5N/25mm, therefore the two satisfies this condition of the adhesion that first colloid 720 is greater than the adhesion of second colloid 730, and through many times of experiments, chooses for use these two types of colloids with lower costs, and the temperature environment of adaptation this application display device 10 that can be better.

Of course, the first colloid 720 and the second colloid 730 may be any other colloid satisfying the condition that the adhesion force of the first colloid 720 is greater than that of the second colloid 730, which is not listed herein.

In order to improve the fixing strength between the diffusion plate 200 and the optical film 300, as shown in fig. 16, the perpendicular projection of the attachment portion 700 on the first edge region 211 coincides with the first edge region 211, and as shown in fig. 17, the perpendicular projection of the attachment portion 700 on the fifth edge region 311 coincides with the fifth edge region 311. In this way, the first edge region 211 and the attaching portion 700 can be attached to the greatest extent, and the fifth edge region 311 and the attaching portion 700 can be attached to each other, so that the first edge region 211 and the fifth edge region 311 can be better attached to each other, that is, the diffusion plate 200 and the optical film 300 can be better attached to each other, and the adhesion between the diffusion plate 200 and the optical film 300 can be more firmly enhanced.

It can be understood that, when the pasting part 700 includes the substrate 710, the first glue body 720 and the second glue body 730, the vertical projection of the first glue body 720 on the fifth edge region 311 should coincide with the fifth edge region 311, and the vertical projection of the second glue body 730 on the first edge region 211 should coincide with the first edge region 211. So as to improve the fixing firmness to the maximum extent.

In addition, as shown in fig. 16, the perpendicular projection of the pasting part 700 onto the second edge region 212 coincides with the second edge region 212, and as shown in fig. 17, the perpendicular projection of the pasting part 700 onto the sixth edge region 312 coincides with the sixth edge region 312. In this way, the second edge area 212 and the attaching portion 700 can be attached to the greatest extent, and the sixth edge area 312 and the attaching portion 700 can be attached to each other, so that the second edge area 212 and the sixth edge area 312 can be better attached to each other, that is, the diffusion plate 200 and the optical film 300 can be better attached to each other, and the adhesion between the diffusion plate 200 and the optical film 300 can be more reliable.

It can be understood that, when the pasting part 700 includes the substrate 710, the first colloid 720 and the second colloid 730, the perpendicular projection of the first colloid 720 on the sixth edge region 312 is coincident with the sixth edge region 312, and the perpendicular projection of the second colloid 730 on the second edge region 212 is coincident with the second edge region 212. So as to improve the fixing firmness to the maximum extent.

In addition, the fixing strength between the diffusion plate 200 and the optical film 300 is further improved. As shown in fig. 18, the first edge region 211 extends from a first side (upper side) of the light emitting surface 210 to a second side (lower side) of the light emitting surface 210 along a first direction (arrow direction on the left side in fig. 18), the first side of the light emitting surface 210 is opposite to the second side of the light emitting surface 210; as shown in fig. 19, the fifth edge region 311 extends in the first direction (arrow direction on the left side of fig. 19) from a first side (upper side) of the first surface 310 to a second side (lower side) of the first surface 310, the first side of the first surface 310 being opposite to the second side of the first surface 310.

In this way, the lengths of the first edge region 211 and the fifth edge region 311 in the first direction can be kept at the maximum, and when the first edge region 211 and the fifth edge region 311 are adhered together by the adhering part 700, the fixing area between the light emitting surface 210 and the first surface 310 on the left side can be maximized, so that the diffusion plate 200 and the optical film 300 can be more firmly fixed together.

On this basis, as shown in fig. 18, the second edge region 212 extends from the first side (upper side) of the light emitting surface 210 to the second side (lower side) of the light emitting surface 210 along the second direction (arrow direction on the right side in fig. 18); as shown in fig. 19, the sixth border area 312 extends from the first side (upper side) of the first surface 310 to the second side (lower side) of the first surface 310 in the second direction (arrow direction on the right side in fig. 19).

In this way, the lengths of the second edge area 212 and the sixth edge area 312 in the second direction can be kept to the maximum, and when the second edge area 212 and the sixth edge area 312 are adhered together by the adhering portion 700, the fixing area between the light emitting surface 210 and the first surface 310 on the right side can be kept to the maximum, that is, the left side of the diffusion plate 200 and the left side of the optical film 300, and the right side of the diffusion plate 200 and the right side of the optical film 300 are fixed together to the maximum.

In some embodiments, as shown in fig. 19, such that the first direction is parallel to the second direction. In this way, the extending direction of the first margin region 211 and the extending direction of the second margin region 212 can be kept the same, and the extending direction of the fifth margin region 311 and the extending direction of the sixth margin region 312 can be kept the same, so that the same attaching portion 700 can be processed to attach the first margin region 211 and the fifth margin region 311 together, and the second margin region 212 and the sixth margin region 312 together. Facilitating the shape design of the attaching portion 700.

Of course, the first direction and the second direction may not be parallel.

In some embodiments, in order to further increase the fixing firmness between the diffusion plate 200 and the optical film 300, as shown in fig. 20, the first surface 310 further includes a seventh edge region 313 (located on the top side or the bottom side of the display device 10, where the top side is the upper side in fig. 20 and the bottom side is the lower side in fig. 20), the light emitting surface 210 further includes a third edge region 213 (located on the top side or the bottom side of the display device 10), the seventh edge region 313 is opposite to the third edge region 213, and the third edge region 213 and the seventh edge region 313 are fixed together, for example, by a double-sided tape. In this way, the diffusion plate 200 and the optical film 300 are also fixed on the top side or the bottom side, and the fixation between the diffusion plate 200 and the optical film 300 can be enhanced.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A display device, comprising:

the back plate is provided with an opening, a groove is formed at the edge of the opening, the groove is arranged along the periphery of the opening, and the notch of the groove faces the inner side of the opening;

the edge of the diffusion plate extends into the groove, the diffusion plate is provided with a light-emitting surface, and the light-emitting surface comprises a first edge area and a second edge area which are oppositely arranged;

the edge of the optical film extends into the groove, the optical film is located on one side where the light-emitting surface of the diffusion plate is located, the surface of the optical film opposite to the light-emitting surface is a first surface, the first surface comprises a fifth edge area and a sixth edge area which are oppositely arranged, the first edge area is opposite to the fifth edge area, and the second edge area is opposite to the sixth edge area;

the first edge region and the fifth edge region are provided with the pasting part therebetween and are fixedly adhered to each other, and the second edge region and the sixth edge region are provided with the pasting part therebetween and are fixedly adhered to each other.

2. The display device according to claim 1,

the vertical projection of the pasting part on the first edge area is superposed with the first edge area, and the vertical projection of the pasting part on the fifth edge area is superposed with the fifth edge area.

3. The display device according to claim 2,

the vertical projection of the pasting part on the second edge area coincides with the second edge area, and the vertical projection of the pasting part on the sixth edge area coincides with the sixth edge area.

4. The display device according to any one of claims 1 to 3,

the first edge area extends from the first side of the light emitting surface to the second side of the light emitting surface along a first direction, and the first side of the light emitting surface is opposite to the second side of the light emitting surface;

the fifth edge region extends from the first side edge of the first surface to the second side edge of the first surface along the first direction, the first side edge of the first surface being opposite to the second side edge of the first surface.

5. The display device according to claim 4,

the second edge area extends from the first side edge of the light emitting surface to the second side edge of the light emitting surface along a second direction;

the sixth border area extends from the first side edge of the first surface to the second side edge of the first surface along the second direction.

6. The display device according to claim 5,

the first direction is parallel to the second direction.

7. The display device according to any one of claims 1 to 3, wherein the attaching portion includes:

a substrate;

the first colloid is coated on the surface of one side, facing the light-emitting surface, of the substrate;

and the second colloid is coated on the surface of one side of the substrate facing the first surface.

8. The display device according to claim 7, wherein an adhesive force of the first adhesive is greater than an adhesive force of the second adhesive.

9. The display device according to claim 8, wherein the first gel is composed of acrylic gel, and the second gel is composed of silicone gel.

10. The display device according to claim 7, wherein the substrate is made of a polyethylene terephthalate material.

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