CN211375301U - Display screen and projection equipment - Google Patents

Abstract

The application discloses display screen and projection equipment belongs to projection technical field. The display screen includes: the optical diaphragm fixing device comprises a back plate, an optical diaphragm and a fixing assembly, wherein the fixing assembly comprises a fixing plate and a hanging rack; the optical diaphragm is fixed on the first side of the back plate, and the fixing plate is fixed on the second side of the back plate; the stores pylon is fixed on the fixed plate, and the fixed plate is used for passing through stores pylon and installation face fixed connection. Display screen can be through fixed plate and stores pylon and installation face fixed connection, and the fixed plate can contact with the backplate by a large scale, and then the fixed plate can disperse on a large scale the stress on the backplate, like this, can avoid producing bending deformation's phenomenon because of stress concentration on the backplate to display screen's display effect has been improved.

Description

Display screen and projection equipment

Technical Field

The application relates to the technical field of projection, in particular to a display screen and projection equipment.

Background

With the continuous development of science and technology, projection equipment is more and more applied to the work and the life of people. Currently, a projection device mainly includes a projection host and a display screen. The projection host is mainly used for emitting light to the display screen, and the display screen is fixed on the mounting surface and used for receiving light beams emitted by the projection host so as to display pictures.

In the related art, a hanging rack is usually arranged on the installation surface, a hanging groove corresponding to the hanging rack is arranged on the back surface of the display screen, and the display screen is fixed on the installation surface through the matching of the hanging groove and the corresponding hanging rack. However, when the display screen is fixed by the hanger, the display screen is easily bent and deformed at the hanger due to a stress concentration phenomenon, thereby affecting the display effect.

SUMMERY OF THE UTILITY MODEL

The application provides a display screen and projection equipment, can solve the problem that display screen produces bending deformation easily. The technical scheme is as follows:

in one aspect, a display screen, the display screen comprising: the optical film comprises a back plate, an optical film and a fixing assembly, wherein the fixing assembly comprises a fixing plate and a hanging rack;

the optical diaphragm is fixed on the first side of the back plate, and the fixing plate is fixed on the second side of the back plate;

the hanging rack is fixed on the fixing plate, and the fixing plate is fixedly connected with the mounting surface through the hanging rack.

In one possible implementation, the area of the fixing plate is less than or equal to the area of the back plate and greater than or equal to 0.4 times the area of the back plate.

Optionally, the length of the fixing plate in the horizontal direction is less than or equal to the length of the back plate in the horizontal direction, and is greater than or equal to 0.6 times the length of the back plate in the horizontal direction.

Optionally, the length of the hanger is equal to the length of the fixing plate in the horizontal direction.

Optionally, the fixing assembly further comprises at least one support unit;

the at least one supporting unit is fixedly connected with the fixing plate, and the size of each supporting unit along the thickness direction of the fixing plate is equal to the size of the hanging rack along the thickness direction of the fixing plate.

Optionally, each support unit is a hollow structure provided with a cavity.

Optionally, each supporting unit is an elongated structure, and the at least one supporting unit is distributed along a vertical direction.

Optionally, the fixing plate and the hanger are integrally formed.

Optionally, the display screen further includes a frame, and the frame wraps the edge of the back plate, or wraps the edges of the back plate and the optical film.

In another aspect, a projection device comprises a projection host and the display screen of the first aspect;

the projection host is positioned on one side, close to the optical film, of the display screen, and a light outlet of the projection host faces the display screen;

the projection host is used for emitting light beams to the display screen, and the display screen is used for receiving the light beams emitted by the projection host and displaying pictures.

The technical scheme provided by the application has the beneficial effects that at least:

the fixed plate is fixed on the second side of the back plate of the display screen in a stacking mode, the hanging rack is fixed on the fixed plate, the fixed plate can be fixedly connected with the mounting surface through the hanging rack, and the display screen can be fixedly connected with the mounting surface through the fixed plate and the hanging rack. The fixed plate can contact with the backplate by a large scale, and then the fixed plate can disperse on a large scale the stress on the backplate, like this, can avoid producing bending deformation's phenomenon on the backplate because of stress concentration to display screen's display effect has been improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic side view of a display screen according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a display screen provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of another display screen provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of a side view structure of another display screen provided in the embodiments of the present application;

fig. 5 is an exploded view of a display screen provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of a side view structure of another display screen provided in the embodiment of the present application;

fig. 7 is a schematic structural diagram of a projection apparatus according to an embodiment of the present application.

Reference numerals:

1: a display screen; 2: a mounting surface; 3: a projection host;

11: a back plate; 12: an optical film; 13: a fixing assembly; 14: a frame; 21: hooking;

131: a fixing plate; 132: a hanger; 133: a support unit.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Fig. 1 illustrates a schematic side view structure of a display screen according to an embodiment of the present application, and fig. 2 illustrates a schematic structure of a display screen according to an embodiment of the present application. As shown in fig. 1 and 2, the display screen includes: a back plate 11, an optical film 12 (not shown in the figure) and a fixing assembly 13, wherein the fixing assembly 13 comprises a fixing plate 131 and a hanging rack 132; the optical diaphragm 12 is fixed on the first side of the back plate 11, and the fixing plate 131 is fixed on the second side of the back plate 11; the hanging bracket 132 is fixed on the fixing plate 131, and the fixing plate 131 is used for being fixedly connected with the mounting surface 2 through the hanging bracket 132.

In the embodiment of the present application, the fixing plate 131 is fixed on the second side of the back plate 11 of the display screen 1 in a stacked manner, the hanging rack 132 is fixed on the fixing plate 131, and the fixing plate 131 can be fixedly connected to the mounting surface 2 through the hanging rack 132, so that the display screen 1 can be fixedly connected to the mounting surface 2 through the fixing plate 131 and the hanging rack 132. The fixing plate 131 can be in large-area contact with the back plate 11, and then the fixing plate 131 can disperse the stress on the back plate 11 in a large range, so that the phenomenon that the back plate 11 is bent and deformed due to stress concentration can be avoided, and the display effect of the display screen 1 is improved.

Wherein, the optical film 12 can be laminated and fixed on the first side of the back plate 11 by the adhesive. Illustratively, the optical film 12 and the first side of the back plate 11 may be bonded together by a double-sided adhesive tape.

Wherein, the fixing plate 131 can be laminated and fixed on the second side of the back plate 11 by an adhesive. Illustratively, the fixing plate 131 and the second side of the back plate 11 may be adhered by a double-sided adhesive tape. Of course, the display screen 1 can be prevented from generating noise due to vibration by using an adhesive with buffering and vibration absorbing capabilities. For example, the fixing plate 131 and the counter back plate 11 may be adhered by foam adhesive.

Of course, besides being fixed by adhesion, the fixing plate 131 and the back plate 11 can also be fixedly connected by magnetic attraction, so as to facilitate the separation of the back plate 11 and the fixing plate 131.

The mounting surface 2 may be a fixing bracket, a wall, or the like, as long as the display screen 1 can be fixedly supported.

In some embodiments, the area of the fixing plate 131 may be less than or equal to the area of the back plate 11 and greater than or equal to 0.4 times the area of the back plate 11.

Like this, can guarantee the large tracts of land contact of fixed plate 131 with backplate 11 to evenly distribute the effort between backplate 11 and fixed plate 131 on the whole face of fixed plate 131, with the dispersion of realization stress, can increase through fixed plate 131 simultaneously and spacing on a large scale the backplate 11 on the plane, with the planarization that effectively keeps the screen. Of course, the area of the fixing plate 131 may also be adjusted by a small amount according to actual conditions, as long as the flatness of the screen can be ensured, which is not limited in the embodiment of the present application.

In some embodiments, the length of the fixing plate 131 in the horizontal direction may be less than or equal to the length of the back plate 11 in the horizontal direction, and greater than or equal to 0.6 times the length of the back plate 11 in the horizontal direction.

Thus, the fixing plate 131 can disperse the acting force between the back plate 11 and the fixing plate 131 along the horizontal direction, so that the back plate 11 is uniformly stressed in the horizontal direction, the display screen 1 can be horizontally fixed, and the display screen 1 is prevented from deflecting under the action of external force. Of course, the length of the fixing plate 131 in the horizontal direction may also be adjusted by a small margin according to actual situations, as long as the horizontal fixation of the screen can be ensured, which is not limited in the embodiment of the present application.

In the above two embodiments, the fixing plate 131 may be a rectangular thin plate, and of course, the fixing plate 131 may also be a thin plate with other shapes as long as it can ensure a large-area contact with the back plate 11, or ensure that the fixing plate 131 and the back plate 11 have a certain contact length along the horizontal direction, which is not limited in this embodiment. For example, the fixing plate 131 may be provided as a circular thin plate.

The thickness of the fixing plate 131 may be within a threshold range, which may ensure that the fixing plate 131 has sufficient strength and the fixing plate 131 has a light weight. Illustratively, the threshold value may range between 0.8mm and 1 mm.

In some embodiments, the material of the fixing plate 131 may be a hard material. For example, the material of the fixing plate 131 may be a metal material. Thus, the fixing plate 131, which is a hard material, can maintain sufficient strength and flatness. The fixing plate 131 is not easily deformed by external force while stably supporting the back plate 11, and thus the flatness of the back plate 11 can be ensured.

In some embodiments, the length of the hanger 132 may be equal to the length of the fixing plate 131 in the horizontal direction. Thus, the fixing plate 131 can uniformly transmit the external force to the hanger 132. Of course, the length of the hanging rack 132 can also be adjusted by a small margin according to actual conditions as long as the uniform transmission of the external force can be ensured, and the embodiment of the present application does not limit this.

The hanger 132 may be an elongated structure, and the cross section of the hanger 132 may be L-shaped. That is, the hanger 132 may be an elongated right angle bent plate. The thickness of the plate may be within a threshold range, which may be a threshold range that ensures that the hanger 132 has sufficient strength and a relatively small thickness. Illustratively, the threshold value may range between 0.8mm and 1 mm.

It should be noted that one side of the L-shaped hanger 132 along the length direction may be fixedly connected to the fixing plate 131, and the other side of the L-shaped hanger 132 along the length direction may be a structure facing vertically downward, that is, the other side of the L-shaped hanger 132 along the length direction faces the mounting surface 2 and is used for being connected to the hanger 132.

Of course, the cross section of the hanger 132 may be configured in other shapes as long as the hanger can be fixedly connected with the mounting surface 2, and the embodiment of the present application is not limited thereto. For example, the cross-sectional shape of the hanger 132 may be configured as a U-shape, the sidewall of the U-shaped hanger 132 may be fixedly connected to the fixing plate 131, and the open end of the U-shaped hanger 132 may face a vertical downward direction, that is, the open end of the U-shaped hanger 132 faces the structure configured on the mounting surface 2 for connecting with the hanger 132.

It should be noted that the hanging bracket 132 can be integrally formed with the fixing plate 131, so that the fixing assembly 13 can have high strength and can be conveniently installed.

In some embodiments, the material of the hanging rack 132 may be a hard material, and of course, the material of the hanging rack 132 may be the same as the material of the fixing plate 131. For example, the material of the hanger 132 may be a metal material.

In some embodiments, as shown in fig. 3, the fixing assembly 13 may further include at least one supporting unit 133; at least one supporting unit 133 is fixedly connected to the fixing plate 131, and a dimension of each supporting unit 133 in a thickness direction of the fixing plate 131 is equal to a dimension of the hanger 132 in the thickness direction of the fixing plate 131.

One side of the supporting unit 133 may be fixedly connected to the fixing plate 131, and the other side of the supporting unit 133 may abut against the mounting surface 2, so that the fixing plate 131 may be supported by the supporting unit 133. Meanwhile, since the dimension of each supporting unit 133 in the thickness direction of the fixing plate 131 is equal to the dimension of the hanger 132 in the thickness direction of the fixing plate 131, the supporting unit 133 can maintain the back panel 11 in a state of being parallel to the mounting surface 2. Illustratively, when the mounting surface 2 is vertically arranged, the fixing plate 131 may maintain a vertically fixed state under the support of the supporting unit 133.

It should be noted that the size of each supporting unit 133 along the thickness direction of the backboard 11 can be adjusted, so that the adjustment of the angle between the backboard 11 and the mounting surface 2 can be realized by adjusting the size of the supporting unit 133, so as to keep the backboard 11 at a visual angle convenient for the user to view.

In some embodiments, each of the support units 133 may be a hollow structure provided with a cavity.

Wherein the supporting unit 133 provided with the cavity can have a light weight while securing a supporting effect. For example, the cross-sectional shape of each supporting unit 133 may be n-shaped, and may be other shapes as long as it can play a role of stable support, which is not limited in the embodiment of the present application. In addition, each supporting unit 133 may be integrally formed with the fixing plate 131, so that the firmness of the supporting unit 133 may be ensured and the assembly may be facilitated.

In some embodiments, each support unit 133 may be an elongated structure, and at least one support unit 133 is distributed in a vertical direction.

Wherein, each supporting unit 133 may be arranged along the horizontal direction, and of course, may form an angle with the horizontal direction, and the length of each supporting unit 133 along the horizontal direction may be equal to the length of the fixing plate 131 along the horizontal direction. In this way, the fixed plate 131 may uniformly apply an external force to each supporting unit 133 in a horizontal direction, and each supporting unit 133 may more stably support the fixed plate 131. Of course, the length of each supporting unit 133 along the horizontal direction may also be adjusted by a small amount according to actual situations, as long as the fixing plate 131 can be stably supported, which is not limited in the embodiment of the present application.

The length direction of each supporting unit 133 may be parallel to the horizontal direction, and of course, an included angle may also be formed with the horizontal direction, as long as one side of each supporting unit 133, which is far away from the back plate 11, can abut against the mounting surface 2. In addition, the at least one supporting unit 133 may be uniformly distributed in the vertical direction, so that the force applied between the fixing plate 131 and the mounting surface 2 is uniformly distributed on the at least one supporting unit 133. Of course, the at least one supporting unit 133 may also be randomly distributed along the vertical direction, which is not limited in this embodiment of the application.

It should be noted that the number of the supporting units 133 may be set according to actual situations. The longer the length of the fixing plate 131 in the vertical direction, the greater the number of the supporting units 133 may be. For example, when the length of the fixing plate 131 in the vertical direction is six times or less than six times the length of the supporting unit 133 in the vertical direction, the number of the supporting units 133 may be set to only one. When the length of the fixing plate 131 in the vertical direction is seven to ten times the length of the supporting unit 133 in the vertical direction, the number of the supporting units 133 may be set to two or three. Of course, the number of the supporting units 133 may also be set according to other situations, which is not limited in the embodiment of the present application.

In some embodiments, the material of the supporting unit 133 may be a hard material, and of course, the material of the supporting unit 133 may be the same as the material of the fixing plate 131 and the hanger 132. For example, the material of the supporting unit 133 may be a metal material.

It should be noted that the positions of the supporting units 133 may be set at a lower position on the fixing plate 131, and the hangers 132 may be set at a higher position on the fixing plate 131, that is, each supporting unit 133 is located below the hanger 132. In this way, the supporting unit 133 can cooperate with the hanging rack 132 effectively to distribute the external force applied to the fixing plate 131 by the backboard 11 in a balanced manner, thereby realizing smooth support of the backboard 11.

In some embodiments, a support structure corresponding to the hanging rack 132 may be disposed on the mounting surface 2, and the backboard 11 may be fixed on the mounting surface 2 through the fixing plate 131, the hanging rack 132 and the support structure. Illustratively, the support structure may be a hook 21.

In some embodiments, the length of the hook 21 in the horizontal direction may be greater than or equal to the length of the hanger 132 in the horizontal direction, so that the hanger 132 can support the hanger 132 integrally by the hook 21, and the hanger 132 can uniformly transmit the external force to the hook 21. Of course, the length of the hook 21 can also be adjusted by a small margin according to actual conditions as long as the uniform transmission of the external force can be ensured, and the embodiment of the present application does not limit this.

The hook 21 may be a strip structure, and the cross section of the hook 21 may be L-shaped. That is, the hook 21 may be an elongated right-angle bent plate. The thickness of panel can be located certain threshold value within range, and this threshold value scope can be for guaranteeing that couple 21 has sufficient intensity, can carry out the threshold value scope that stably supports to backplate 11. Illustratively, the threshold range may be between 3mm and 6 mm.

It should be noted that one side of the L-shaped hook 21 along the length direction may be fixedly connected to the mounting surface 2, and the other side of the L-shaped hook 21 along the length direction may face the vertical upward direction, that is, the other side of the L-shaped hook 21 along the length direction may face the hanging rack 132.

Of course, the shape of the cross section of the hook 21 may be set to other shapes as long as the hook can be hung on the hanger 132, and this is not limited in this embodiment of the application. For example, the cross-sectional shape of the hook 21 may be configured as a U-shape, the side wall of the U-shaped hook 21 may be fixedly connected to the mounting surface 2, and the open end of the U-shaped hook 21 may face in a vertically upward direction, that is, the opening direction of the U-shaped hook 21 may face the hanging rack 132.

It should be noted that the hanging rack 132 can be hung on the hanging hook 21, and the hanging hook 21 can apply a vertical upward supporting force and a pulling force towards the mounting surface 2 to the hanging rack 132, so that the hanging hook 21 can ensure the stable fixation of the display screen 1.

It should be noted that, the hook 21 may be integrally formed with the mounting surface 2, so as to ensure that the hook 21 can be more firmly fixed on the mounting surface 2, and the installation is convenient. Of course, the hook 21 may also be fixedly connected to the mounting surface 2 by other fixing methods, which is not limited in the embodiment of the present application. For example, the hook 21 may be fixed by an angle iron and a fixing screw.

In some embodiments, the material of the hook 21 may be a hard material, and of course, the material of the hook 21 may be the same as the material of the fixing member 13. For example, the material of the fixing plate 131 may be a metal material.

In some embodiments, the surface of the optical film 12 remote from the back plate 11 protrudes out of the frame, and the surface of the back plate 11 remote from the optical film 12 protrudes out of the frame, or is flush with the frame. That is, the thickness of the frame is smaller than the sum of the thicknesses of the optical film 12 and the back plate 11, in other words, the frame does not affect the overall thickness of the display screen, and therefore, the display screen can be made thinner and lighter by reducing the thicknesses of the optical film 12 and the back plate 11 alone.

In some embodiments, the optical film 12 is fixed on the back plate 11, the first projection covers the second projection, and a distance between an edge of the first projection and an edge of the second projection is less than 1 mm. The first projection is a projection of the back plate 11 and the frame in the thickness direction of the back plate 11, and the second projection is a projection of the optical film 12 in the thickness direction of the back plate 11. The surface of the optical film 12 remote from the back plate 11 protrudes out of the frame and the surface of the back plate 11 remote from the optical film 12 protrudes out of the frame or is flush with the frame.

In some embodiments, the display screen 1 may further include a bezel 14, and the bezel 14 wraps around the edge of the back plate 11, or wraps around the edges of the back plate 11 and the optical film 12.

When the bezel 14 comprises an edge of a backplate, in some embodiments, the bezel 14 of the frame may be U-shaped in cross-section, as shown in fig. 4. When the frame 14 has a U-shaped cross section, in a possible implementation manner, both sides of the edge of the back plate 11 are stepped, and the frame 14 is fixed at the edge of the back plate 11. That is, a first step is disposed on the surface of the back plate 11 close to the optical film 12 along the thickness direction, a second step is disposed on the surface of the back plate 11 far from the optical film 12 along the thickness direction, and the frame 14 is fixed to the edge of the back plate 11 through the step surface of the first step and the step surface of the second step. In other words, the frame 14 with a U-shaped cross section may be firstly buckled on the step surfaces of the first step and the second step, so as to fix the frame 14 on the edge of the back plate 11 through the step surfaces of the first step and the second step.

It should be noted that the frame 14 may be fixed on the step surface of the first step and the step surface of the second step by double-sided tapes, respectively, so as to fix the frame 14 on the edge of the back plate 11. Of course, the frame 14 may also be fixed on the step surface of the first step and the step surface of the second step by other manners, which is not specifically limited in this embodiment of the application.

In some embodiments, when the cross section of the frame 14 is U-shaped, as shown in fig. 4, in one possible implementation, the frame 14 may include a first elastic member and a second elastic member which are oppositely arranged, and the frame 14 is clamped on the edge of the backboard 11 through the first elastic member and the second elastic member. In other words, the bezel 14 can be clamped on the step faces of the first step and the second step by the first elastic member and the second elastic member. That is, the frame 14 is clamped on the step surface of the first step and the step surface of the second step by the first elastic member and the second elastic member, so as to fix the frame 14 on the edge of the back plate 11. Therefore, the problem that when the back plate 11 is thin, the frame 14 is loosened and further the frame is loosened on the back plate 11 due to the fact that the frame 14 is fixed on the back plate 11 in a screw fixing mode is solved.

Further, in order to enable the frame to be better fixed on the back plate 11, in some embodiments, an adhesive may be filled between the first elastic component and the optical diaphragm 12, wherein the first elastic component refers to an elastic component located between the back plate 11 and the optical diaphragm 12. Thus, in addition to fixing the bezel 14 to the edge of the back plate 11 by the first elastic member and the second elastic member being clamped to the step surface of the first step and the step surface of the second step, the first elastic member may be bonded to the back plate 11 by an adhesive, so that the frame is more firmly fixed to the back plate 11.

When the frame 14 is U-shaped in cross-section, in another possible implementation, as shown in fig. 5, the frame 14 may include a third elastic member and a first rigid member. The frame 14 is clamped to the edge of the back plate 11 by a first rigid member and a third elastic member, the first rigid member being located between the back plate 11 and the optical diaphragm 12. In other words, the first rigid member is located between the step surface of the first step and the optical film 12, and the bezel 14 can be clamped on the step surface of the first step and the step surface of the second step by the first rigid member and the third elastic member.

In this implementation, in addition to being fixed between the step surface of the first step and the optical film 12 by the first rigid member, the frame 14 is clamped on the step surface of the first step and the step surface of the second step by the first rigid member and the third elastic member under the elastic force of the third elastic member, that is, the frame 14 is also fixed on the back plate 11 doubly, so as to avoid the frame loosening problem caused by easy loosening of the frame 14.

The first rigid member may be fixed between the step surface of the first step and the optical film 12 through a double-sided adhesive tape, and certainly, the first rigid member may also be fixed between the step surface of the first step and the optical film 12 through other manners, which is not specifically limited in this embodiment of the application.

When the frame 14 is U-shaped in cross-section, in yet another possible implementation, the frame 14 may include a fourth elastic member and a fourth rigid member. The fourth elastic member is fixed between the step surface of the first step and the optical film 12, and the bezel 14 can be clamped between the step surface of the first step and the step surface of the second step by the fourth rigid member and the fourth elastic member.

In this implementation, in addition to being fixed between the step surface of the first step and the optical film 12 by the fourth elastic member, the frame 14 is clamped on the step surface of the first step and the step surface of the second step by the fourth rigid member and the fourth elastic member under the elastic force of the fourth elastic member, that is, the frame 14 is also fixed on the back plate 11 in a double manner, thereby avoiding the problem of frame looseness caused by easy looseness of the frame 14.

The fourth elastic member may be fixed between the step surface of the first step and the optical film 12 through a double-sided adhesive tape, and of course, the fourth elastic member may also be fixed between the step surface of the first step and the optical film 12 through other manners, which is not specifically limited in this application.

When the frame 14 is U-shaped in cross-section, in yet another possible implementation, as shown in fig. 6, the frame 14 may include a second rigid member and a third rigid member. The frame 14 is clamped at the edge of the back plate 11 by a second rigid member and a third rigid member, the second rigid member being located between the back plate 11 and the optical membrane 12. In other words, the second rigid member is fixed between the step surface of the first step and the optical film 12, and the third rigid member is fixed on the step surface of the second step. The second rigid member may be fixed between the step surface of the first step and the optical film 12 through a double-sided adhesive tape, and certainly, the second rigid member may also be fixed between the step surface of the first step and the optical film 12 through other manners, which is not specifically limited in this embodiment of the application. In addition, the third rigid member may be fixed on the step surface of the second step by a double-sided adhesive tape, and of course, the third rigid member may also be fixed on the step surface of the second step by other manners, which is not specifically limited in the embodiment of the present application.

In other embodiments, the inner wall of the frame is in a step-like structure along the thickness direction, the edge of the back plate 11 is in a step-like structure along the thickness direction, and the step surface of the back plate 11 is fixedly connected with the step surface of the frame.

When the inner wall of the frame is stepped in the thickness direction, in a possible implementation manner, the step surface of the frame faces the direction of the optical film 12, and accordingly, the step surface of the back plate 11 may face the direction away from the optical film 12, and then, the step surface of the back plate 11 and the step surface of the frame may be fixedly connected.

When the inner wall of the frame has a step-like structure in the thickness direction, in another possible implementation manner, the step surface of the frame faces away from the optical film 12, and accordingly, the step surface of the back plate 11 may face the direction of the optical film 12, and then, the step surface of the back plate 11 and the step surface of the frame may be fixedly connected.

When the rim 14 wraps around the edges of the backplate and the optical diaphragm, in some embodiments, as shown in FIG. 6, the inner walls of the frame are stepped in thickness to form two inner annular surfaces. The first inner ring surface is fixedly connected with the side surface of the back plate 11, and the first inner ring surface is one of the two inner ring surfaces far away from the outer wall of the frame. The second inner ring surface is fixedly connected to the edge of the optical film 12, and the second inner ring surface is one of the two inner ring surfaces close to the outer wall of the frame.

The first inner ring surface may be fixedly connected to the side surface of the back plate 11 through a double-sided tape, and of course, the first inner ring surface may also be fixedly connected to the side surface of the back plate 11 through other manners, for example, the side surface of the back plate 11 may be fixedly connected to the first inner ring surface through a screw, which is not specifically limited in this embodiment of the application.

When the side of the back plate 11 is fixedly connected to the first inner ring surface through a screw, in some embodiments, a threaded hole may be disposed on the side of the back plate 11, and a countersunk hole may be disposed on the opposite side of the first inner ring surface of the frame, so that the screw may pass through the threaded hole fixed to the back plate 11 with the frame, and the head of the screw may be sunk into the countersunk hole.

In addition, the second inner ring surface may be fixedly connected to the edge of the optical film 12 through a double-sided tape, and certainly, the second inner ring surface may also be fixedly connected to the edge of the optical film 12 through other manners, which is not specifically limited in this embodiment of the application.

In other embodiments, as shown in fig. 4 and 5, the inner wall of the frame is stepped in the thickness direction to form two inner annular surfaces, and the edge of the back plate 11 is stepped in the thickness direction to form two outer annular surfaces. The first inner annular surface is fixedly connected to the first outer annular surface, the first inner annular surface is one of the two inner annular surfaces far from the outer wall of the frame, and the first outer annular surface is one of the two outer annular surfaces near the center of the backplate 11. The second inner ring surface is fixedly connected with the second outer ring surface and the edge of the optical film 12, the second inner ring surface is one of the two inner ring surfaces close to the outer wall of the frame, and the second outer ring surface is one of the two outer ring surfaces far away from the center of the back plate 11.

The first inner ring surface and the first outer ring surface may be fixedly connected by a double-sided tape, and certainly, the first inner ring surface and the first outer ring surface may also be fixedly connected by other manners, which is not specifically limited in the embodiment of the present application. In addition, the second inner ring surface may be fixedly connected to the second outer ring surface and the edge of the optical film 12 through a double-sided adhesive tape, and certainly, the second inner ring surface may also be fixedly connected to the second outer ring surface and the edge of the optical film 12 through other manners, which is not specifically limited in this embodiment of the application.

In addition, the area of the optical film 12 may be equal to the area of the region surrounded by the second inner ring surface of the frame. In other words, the edge of the optical film 12 can just abut against the second inner annular surface, so that a gap between the side surface of the optical film 12 and the second inner annular surface can be avoided, and foreign matters such as dust enter the gap between the optical film 12 and the back plate 11 through the gap, thereby affecting the display effect of the display screen.

Furthermore, the side surface of the optical film 12 and the second inner ring surface can be fixedly connected through a double-sided adhesive tape, so that a gap between the side surface of the optical film 12 and the second inner ring surface can be further avoided, and further, foreign matters such as dust can be better prevented from entering the display screen.

In some embodiments, as shown in fig. 6, the frame may include two oppositely disposed surfaces, and a first surface of the two surfaces is in a tapered structure, and the first surface is the surface on the same side as the surface of the optical film 12 away from the back plate 11. Therefore, when the viewer looks at the display screen from the side where the optical film of the display screen is located, the first surface can be seen to be tapered and gradually shrunk to the side surface of the optical film 12, so that the existence sense of the first surface is weakened, a 'frameless' visual perception is formed, and the viewing effect of the display screen is improved.

Wherein, in some embodiments, the perpendicular distance between the surface of the optical film 12 far away from the back plate 11 and the first intersection line is in the range of 0.1mm-0.6mm, and the first intersection line is the intersection line between the first surface and the outer wall of the frame. Of course, the perpendicular distance between the surface of the optical film 12 away from the back plate 11 and the first intersection line may also be in other distance ranges, which is not specifically limited in the embodiment of the present application.

In addition to forming a first intersection line between the first surface and the outer wall of the frame, a second intersection line between the first surface and the optical film 12 is also formed, and in some embodiments, the second intersection line between the first surface and the optical film 12 may be flush with the surface of the optical film 12 away from the back plate 11, so that the whole display screen can be seen more neatly. Of course, the second intersection line formed between the first surface and the optical film 12 may not be flush with the surface of the optical film 12 away from the back plate 11, which is not specifically limited in the embodiment of the present application.

It will be appreciated that the frame generally serves to protect the back plate 11 and the optical film 12, to increase the strength of the display screen, and to prevent the display screen from breaking, for the entire display screen. That is, the strength of the frame affects the strength of the entire display screen.

Therefore, the strength of the frame is crucial to the strength of the display screen, and it is noted that the strength of the frame is determined by the ratio of the shear modulus to the weight of the frame, and the greater the ratio of the shear modulus to the weight, the higher the strength of the frame. It can be seen that a suitable reduction in the weight of the frame increases the ratio of shear modulus to weight, and thus the strength of the frame. Based on this, in some embodiments, the rim 14 of the frame may be a hollow structure. By providing the frame with the hollow frame 14, the frame can be reduced in weight, and the shear modulus and the weight ratio can be increased, and the strength of the frame can be enhanced.

Wherein, in some embodiments, the cross-section of the inner cavity of the bezel 14 may be circular or rectangular. Of course, the cross section of the inner cavity may have other shapes, which is not specifically limited in the embodiments of the present application.

In other embodiments, the weight of the frame may be reduced by providing a first groove ring on the step surface of the frame, and specifically, the first groove ring may be provided on the step surface of the frame, and correspondingly, a boss ring matching the first groove ring may be provided on the step surface of the back plate 11, and the boss ring is clamped in the first groove ring. Like this, on the one hand can lighten the weight of frame through the mode that sets up first recess ring, increase the intensity of frame, and on the other hand, because be provided with the boss ring that matches with first recess ring on the step face of backplate 11, first recess ring and boss ring match each other, like this, can also increase the area of contact of backplate 11 and frame for the frame can be fixed on backplate 11 more firmly.

Further, a second groove ring 35 may be provided on the surface of the frame opposite to the step surface of the frame, which may further reduce the weight of the frame and further increase the strength of the frame.

In some other embodiments, in order to reduce the weight of the frame, the first inner annular surface of the frame may be provided with a first sawtooth structure 3 along the thickness direction, and correspondingly, the side surface of the back plate 11 is provided with a second sawtooth structure along the thickness direction, and the first sawtooth structure 3 and the second sawtooth structure are matched with each other. Thus, in addition to the weight reduction of the frame and the increase in the strength of the frame, the contact area of the back panel 11 with the frame can be increased, so that the frame can be more firmly fixed to the back panel 11.

It should be noted that the above-mentioned ways of increasing the strength of the frame are only some possible ways of increasing the strength of the frame shown in the embodiment of the present application, and of course, the strength of the frame may also be increased by other ways, that is, only the strength of the frame needs to be increased, and the embodiment of the present application does not specifically limit the ways of increasing the strength of the frame.

In some embodiments, the rim 14 of the frame includes an insert. The insert portion is vertically fixed to the second inner annular surface, is clamped between the optical diaphragm 12 and the back plate 11, and can seal a gap between the optical diaphragm 12 and the back plate 11. Thus, when fine dust enters the small gaps between the frame and the back plate 11 and between the frame and the optical diaphragm 12, the effect of the insertion portion is small and the fine dust cannot continue to enter the gap between the optical diaphragm 12 and the back plate 11, so that the situation that the fine dust seriously affects the display effect of the display screen can be avoided.

In some embodiments, the thickness of the insertion portion in the thickness direction of the frame is not greater than 0.1mm, and of course, based on different application scenarios, the thickness of the insertion portion in the thickness direction of the frame may also be other values, and only the gap between the optical film 12 and the back plate 11 needs to be sealed, which is not specifically limited in the embodiment of the present application.

Further, the material of the insertion portion may be elastic rubber, so that the function of sealing the gap between the optical film 12 and the back plate 11 can be better performed. Of course, the material of the insertion portion may be other materials, which is not specifically limited in the embodiments of the present application.

In this application embodiment, the fixed plate is range upon range of to be fixed in the second side of display screen's backplate, and the stores pylon is fixed on the fixed plate, and the fixed plate can be through stores pylon and installation face fixed connection, then display screen can be through fixed plate and stores pylon and installation face fixed connection. The fixed plate can contact with the backplate by a large scale, and then the fixed plate can disperse on a large scale the stress on the backplate, like this, can avoid producing bending deformation's phenomenon on the backplate because of stress concentration to display screen's display effect has been improved.

Fig. 7 illustrates a schematic structural diagram of a projection apparatus according to an embodiment of the present application. As shown in fig. 7, the projection apparatus includes a projection host 3 and a display screen 1 as described in the above embodiments; the projection host 3 is positioned on one side of the display screen 1 close to the optical film 12 (not shown in the figure), and a light outlet of the projection host 3 faces the display screen 1; the projection host 3 is used for emitting light beams to the display screen 1, and the display screen 1 is used for receiving the light beams emitted by the projection host 3 and displaying pictures.

It should be noted that the structure of the display screen related in the embodiment of the present application may be the same as or similar to the structure of the display screen in the embodiment described above, and details of the embodiment of the present application are not repeated herein.

In the embodiment of the application, the fixed plate can contact with the backplate by a large scale, and then the fixed plate can disperse stress on the backplate on a large scale, so, can avoid producing bending deformation's phenomenon because of stress concentration on the backplate to at projection host computer emergent beam to display screen, and when carrying out the picture through display screen, improved projection equipment's projection effect.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A display screen, characterized in that the display screen comprises: the optical film comprises a back plate, an optical film and a fixing assembly, wherein the fixing assembly comprises a fixing plate and a hanging rack;

the optical diaphragm is fixed on the first side of the back plate, and the fixing plate is fixed on the second side of the back plate;

the hanging rack is fixed on the fixing plate, and the fixing plate is fixedly connected with the mounting surface through the hanging rack.

2. The display screen of claim 1, wherein the area of the fixing plate is less than or equal to the area of the back plate and greater than or equal to 0.4 times the area of the back plate.

3. The display screen of claim 2, wherein the length of the fixing plate in the horizontal direction is less than or equal to the length of the back plate in the horizontal direction and greater than or equal to 0.6 times the length of the back plate in the horizontal direction.

4. A display screen according to claim 3 wherein the hanger has a length equal to the length of the fixed plate in the horizontal direction.

5. A display screen according to claim 1 wherein the securing assembly further comprises at least one support element;

the at least one supporting unit is fixedly connected with the fixing plate, and the size of each supporting unit along the thickness direction of the fixing plate is equal to the size of the hanging rack along the thickness direction of the fixing plate.

6. A display screen according to claim 5 wherein each support element is of hollow construction.

7. A display screen according to claim 5 wherein each support element is of elongate configuration and the at least one support element is distributed vertically.

8. A display screen according to claim 1 wherein the fixing plate is integrally formed with the hanger.

9. A display screen according to any one of claims 1 to 8 wherein the display screen further comprises a bezel, the bezel wrapping around the edges of the back plate or wrapping around the edges of the back plate and the optical film.

10. A projection device, characterized in that the projection device comprises a projection host and a display screen according to any one of claims 1-9;

the projection host is positioned on one side, close to the optical film, of the display screen, and a light outlet of the projection host faces the display screen;

the projection host is used for emitting light beams to the display screen, and the display screen is used for receiving the light beams emitted by the projection host and displaying pictures.

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