WO2023103806A1

WO2023103806A1 - Display device

Info

Publication number: WO2023103806A1
Application number: PCT/CN2022/134175
Authority: WO
Inventors: 周亚民; 石德福; 黄泰; 罗晓
Original assignee: 华为技术有限公司
Priority date: 2021-12-08
Filing date: 2022-11-24
Publication date: 2023-06-15
Also published as: CN217156995U

Abstract

A display device (100), comprising a middle frame (101), a back plate (01), and a light diffusion module (106). An accommodating cavity is formed in the middle frame (101), the back plate (01) and the light diffusion module (106) are both disposed in the accommodating cavity, the back plate (01) is provided with a light source (03), and the light diffusion module (106) is located on the light exit side of the light source (03). The middle frame (101) comprises an outer frame (101a), the space enclosed by the outer frame (101a) forms the accommodating cavity, a first support table (101b) is provided in the outer frame (101a), and the outer frame (101a) and the first support table (101b) are of an integrated structure; the first support table (101b) comprises a support surface (N1) and a back surface (N2) that are opposite to each other, the light diffusion module (106) is disposed on the support surface (N1), the back plate (01) is located on one side of the back surface (N2) and is connected to the middle frame (101), and the distance between the support surface (N1) and the back surface (N2) forms an optical distance of the display device. The back plate (01) can be adapted to different models and has compatibility.

Description

a display device

This application claims the priority of the Chinese patent application with the application number 202123076953.0 and the title of the invention "a display device" submitted to the State Intellectual Property Office on December 08, 2021, the entire contents of which are incorporated in this application by reference.

technical field

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

Background technique

In the field of liquid crystal display technology, the light mixing distance is a key parameter to determine the display quality. FIG. 1 shows a partial structure of an existing display device, wherein, in FIG. 1 , the light mixing distance d is the distance between the light source 03 and the optical diffusion plate 02 .

The light mixing distance of different models on the market is basically different. For example, the light mixing distance of high-end products is small, while the light mixing distance of low-end products is relatively large. Usually, when the structural scheme of the whole machine is the same, but the light mixing distance is different, most of the structural parts are re-opened to achieve the realization, so as to match the models with different light mixing distances. For example, as shown in Figure 1, due to the backplane 01 has a part for supporting the optical diffusion plate 02, so that the optical diffusion plate 02 is supported by the back plate 01. If the light mixing distance d needs to be changed, the back plate 01 needs to be replaced. Usually, the back plate 01 is formed by stamping, so, It is necessary to re-open the mold and prepare another backplane 01 to adapt to different light mixing distances, which indirectly increases the manufacturing cost of the liquid crystal display.

Contents of the invention

The present application provides a display device. The main purpose is to provide a display device, which includes a support platform for supporting the light diffusion module, so that when models with different light mixing distances are installed, there is no need to replace the high-cost backplane, and only the replacement cost is required. A relatively low middle frame is enough.

In order to achieve the above object, the embodiments of the present application adopt the following technical solutions:

The present application provides a display device, which may be a TV, a tablet computer (pad), a notebook computer, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC) and the like.

The display device includes a middle frame, a back plate and a light diffusion module, an accommodation cavity is formed in the middle frame, the back plate and the light diffusion module are both arranged in the accommodation cavity, a light source is arranged on the back plate, and the light diffusion module is located side. Wherein, the middle frame includes an outer frame, and the space surrounded by the outer frame forms the above-mentioned accommodating cavity, and the first supporting platform is arranged in the outer frame, and the outer frame and the first supporting platform are in an integral structure; the first supporting platform has opposite supporting surfaces and the back, the support surface and the back are arranged along the axial direction of the ring structure, the light diffusion module is arranged on the support surface, the back plate is located on the side of the back, and is connected with the middle frame, and the distance between the support surface and the back forms the Displays the light mixing distance of the device.

In the display device provided by the embodiment of the present application, since the middle frame connected to the backplane not only includes the outer frame of the enclosure chamber, but also includes the first support platform inside the outer frame, the light can be diffused during the installation process. The board is installed on the support surface of the first support platform, and the back plate containing the light source is arranged on the back opposite to the support surface, so that the distance between the support surface and the back forms the light mixing distance of the display device.

Especially in the middle frame, the first support platform and the outer frame are designed as an integral structure, so, compared with the prior art, it is not necessary to use other additional process means to prepare the support frame for supporting the light diffusion module. When forming display devices with different light mixing distances, only the corresponding middle frame needs to be processed and manufactured, and the backplane does not need to be processed again. That is to say, compared with the middle frame structure, the backplane with high mold cost and long development cycle can be adapted It is equipped with models with different light mixing distances, that is, the backplane has better compatibility, so as to achieve the purpose of reducing manufacturing costs.

In addition, since the first support platform and the outer frame are designed as an integral structure, furthermore, on the basis of not needing to separately increase the support frame for supporting the light diffusion module, the connection structure between the support frame and the backplane and the corresponding structure are also omitted. In this way, compared with the prior art, it not only simplifies the structure of the display device, but also simplifies the manufacturing process steps and improves the manufacturing efficiency. In addition, it can also avoid the introduction of foreign matter when connecting the support frame and the backplane. in the display device.

In a possible implementation manner, the middle frame further includes: a second support platform arranged in the outer frame, and the outer frame, the first support platform and the second support platform form an integrated structure; the second support platform is located on the first support platform On the side away from the backplane, a groove is formed between the second support platform and the first support platform, and the light diffusion module is arranged in the groove; the display device also includes a display panel, which is arranged on the second support platform and It is located on the support surface on one side away from the first support platform.

This implementation can also be understood in such a way that the second supporting part for supporting the display panel, the second supporting part for supporting the light diffusion module and the outer frame are integrally formed structural parts, for example, they can be made by extrusion molding middle frame.

In a possible implementation manner, the light diffusion module includes a diffusion plate and a light film, and the light film is stacked on the light-emitting side of the diffusion plate; the display device further includes: a connection structure, which is used to connect the light film to the second The support table is connected to prevent the light film from moving relative to the diffuser plate.

During specific implementation, the thickness of the light film is smaller than that of the diffusion plate, and it is a flexible structural member. Furthermore, the light film may move relative to the diffusion plate, which will affect the light output effect of the light diffusion module. By setting the connection structure and fixing the light film with the second supporting platform nearby, the movement of the light film can be suppressed and the working performance of the light diffusion module can be improved.

In a possible implementation manner, the connection structure includes a pulling part and an insertion part connected to the pulling part, the pulling part abuts against the second support surface, and the insertion part passes through the second support platform and is inserted into the optical film inside the chip, so that the optical film is fixedly connected with the second supporting platform.

That is, the connecting structure can be set as an "L"-shaped structure including a pulling part and an inserting part. One end of the "L"-shaped structure is connected to the second support platform, and the other end is inserted into the optical film, so that the optical film The sheet is fixedly connected with the middle frame.

In a possible implementation manner, the end of the insertion portion inserted into the optical film is flush with the surface of the optical film close to the diffuser plate.

In this way, when the display device is in use, even if the diffusion plate is heated and thermally expands, it will not abut against the connection structure of the "L" structure, thereby reducing the performance of the display device.

In a possible implementation manner, a concave cavity is formed on the surface of the second support platform supporting the display panel, and the pulling part is located in the concave cavity.

It can be said that since the pulling part is located on the surface of the second supporting platform for supporting the display panel, in order to avoid the pulling part from affecting the installation and display effect of the display panel, it is formed on the surface of the second supporting platform supporting the display panel. The concave cavity, and the pulling part is located in the concave cavity, so as to ensure the flatness of the display panel.

In a possible implementation manner, the light diffusion module includes a diffusion plate and a light film, and the light film is stacked on the light output side of the diffusion plate; the display device further includes: a connection structure, the connection structure connects the light film to the diffusion plate, To prevent the light film from moving relative to the diffuser.

That is to say, connecting the optical film to the stacked diffusion plates can prevent the optical film from moving relative to the diffusion plate.

In a possible implementation manner, the light film includes a body part covering the diffuser plate and an extension part located on the outer edge of the body part; the extension part is bent toward the diffuser plate, wraps at least the side of the diffuser plate, wraps the diffuser plate The extended part forms the connection structure.

In this implementation manner, the optical film and the diffusion plate are fixed together by bending the extension part of the optical film and wrapping the diffusion plate.

In a possible implementation manner, the extension part of the optical film is fixedly connected to the diffusion plate through an adhesive layer.

Furthermore, the connection strength between the optical film and the diffusion plate is further improved.

In a possible implementation manner, the first supporting platform includes a side facing the central area of the accommodating cavity, and a reflective structure is formed on the side, and the reflective structure is used to reflect the light from the light source to the edge area of the light diffusion module.

In some embodiments, after the light emitted by the light source on the backplane is uniformized by the light diffusion module, the light transmitted to the display panel will also appear uneven. The light in the central area is relatively uniform, but the light in the edge area is less bright than the central area, which makes the uniformity of light on the entire display panel relatively poor. Then, by setting a reflective structure, this problem of poor uniformity can be improved and the vision can be improved. Effect.

In a possible implementation manner, the reflective structure includes a reflective film pasted on the side.

In a possible implementation manner, the reflective structure and the first supporting platform are integrally formed.

For example, the reflective structure can be obtained by oxidizing the side of the first supporting platform, or the reflective material can be sprayed on the side of the first supporting platform to form the reflective structure.

In a possible implementation manner, the first supporting platform includes a side facing the central area of the accommodating cavity, and a light absorbing structure is formed on the side, and the light absorbing structure is used to absorb light from the light source.

In some embodiments, the light of a certain color in the edge area of the display panel may be stronger than the light in the central area, and the light absorbing structure can be provided to make the color of the entire display panel uniform.

In a possible implementation manner, the light-absorbing structure includes a light-absorbing film pasted on a side surface.

In a possible implementation manner, the light-absorbing structure and the first supporting platform are integrally formed.

For example, the light-absorbing structure may be obtained by oxidizing the side of the first support platform, or the light-absorbing material may be sprayed on the side of the first support platform to form the light-absorbing structure.

In a possible implementation, an inlaid groove is formed between the first support platform and the outer frame; the back plate includes a first part on the back side and a second part connected to the first part, and the second part diffuses toward the light The module direction is bent and inserted into the mosaic groove.

By inserting the second part of the backplane into the inlay groove, the connection strength between the backplane and the middle frame can be further improved.

In a possible implementation manner, the first part is fixedly connected to the first support platform through a fastener.

For example, the first part and the first supporting platform are connected by bolts.

Description of drawings

FIG. 1 is a partial structural diagram of a display device in the prior art;

Fig. 2 is a schematic structural diagram showing the light mixing distance;

3 is a front view of a display device;

4 is a side view of a display device;

Figure 5a is a partial structural diagram of a display device;

Fig. 5b is a partial structural diagram of another display device;

FIG. 6 is a schematic cross-sectional structure diagram of a display device provided by an embodiment of the present application;

FIG. 7 is a partial cross-sectional structural schematic diagram of a display device provided by an embodiment of the present application;

FIG. 8 is a partial cross-sectional structural schematic diagram of a middle frame of a display device provided by an embodiment of the present application;

FIG. 9 is a partial cross-sectional structural schematic diagram of a display device provided by an embodiment of the present application;

FIG. 10 is a partial cross-sectional structural schematic diagram of a display device provided by an embodiment of the present application;

FIG. 11 is a partial cross-sectional structural schematic diagram of a display device provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a connection structure of a display device provided by an embodiment of the present application;

FIG. 13 is a partial cross-sectional structural schematic diagram of a display device provided by an embodiment of the present application;

Fig. 14 is a connection structure diagram of a diffusion plate and an optical film of a display device provided by an embodiment of the present application;

FIG. 15 is a partial cross-sectional structural schematic diagram of a display device provided by an embodiment of the present application;

FIG. 16 is a partial cross-sectional structural schematic diagram of a display device provided by an embodiment of the present application;

FIG. 17 is a partial cross-sectional structural schematic diagram of a display device provided by an embodiment of the present application.

Reference signs:

01-back plate; 01a-first part; 01b-second part;

02-diffusion plate;

03-light source;

100-display device;

101-middle frame; 101a-outer frame; 101b-first support platform; 101c-second support platform; 101d-groove; 101e-inlaid groove; 101f-cavity;

102-display panel;

103-support;

104-back shell;

105-support frame;

106-light diffusion module;

1061-optical film; 1061a-body part; 1061b-extension part;

1062-diffusion plate;

107-connection structure; 1071-pulling part; 1072-inserting part;

108 - reflective structure;

109 - fasteners;

110 - foam glue.

Detailed ways

Before introducing the embodiments involved in this application, the technical term "light mixing distance" involved in this application will be explained with reference to FIG. 2 .

As shown in Figure 2, after the light emitted by the light source 03 is transmitted to the diffusion plate 02, the light can be diffused under the action of the diffusion plate 02, so that the light emitted from the diffusion plate 02 is more uniform and the visual effect is better . In some optional embodiments, the distance d1 between the light source 03 and the diffusion plate 02 may be referred to as a light mixing distance. In other optional embodiments, the light source 03 is arranged on the back plate 01. In some scenarios in this field, the light source 03 can be ignored due to its small size, so the distance between the back plate 01 and the diffuser plate 02 can also be The distance d2 between is called light mixing distance.

The embodiments involved in this application will be described in detail below in conjunction with the accompanying drawings.

An embodiment of the present application provides a display device, the display device can be a TV, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook, a personal digital assistant (personal digital assistant, PDA), a tablet computer (pad), Laptops and mobile electronic devices in vehicles, etc. The embodiment of the present application does not specifically limit the specific form of the above-mentioned display device.

FIG. 3 and FIG. 4 exemplarily show a structure diagram in which the display device 100 is a TV, wherein the TV mainly includes a middle frame 101 , and a display panel 102 is mounted on the middle frame 101 . The display panel 102 here may be a liquid crystal display (liquid crystal display, LCD) panel, or a self-luminous display panel. In the case that the display panel 102 is a self-luminous display panel, the display panel 102 can be, for example, an organic light-emitting diode (organic light-emitting diode, OLED) display panel or a quantum dot light-emitting diode (quantum dot light emitting diodes, QLED). ) to display the panel. If the display panel 102 is a liquid crystal display panel, the display device 100 may be called a liquid crystal display device; if the display panel 102 is a self-luminous display panel, the display device 100 may be called a self-luminous display device.

Regardless of whether the display panel 102 is a liquid crystal display panel or a self-illuminating display panel, the display panel 102 includes a display area. Wherein, the display area includes a plurality of sub-pixels, and the plurality of sub-pixels may include, for example, red (red, R) sub-pixels, green (green, G) sub-pixels and blue (blue, B) sub-pixels.

Continuing with FIG. 3 and FIG. 4 , the television may further include a support base 103 on which the display panel 102 and the middle frame 101 are disposed. In addition, in some optional implementation structures, the TV may also include a rear case 104, which is connected to the middle frame 101, and a cavity is formed inside, and electronic components of the TV may be arranged in the cavity, for example, Chips with different functions, speakers, batteries, etc.

In the display devices such as those mentioned above, each category of display devices may include high-configuration products with relatively better performance and low-configuration products with relatively poor performance, such as TVs. In TV products with different configurations, the light mixing distance may be one of the indicators for distinguishing high and low configurations. For example, a high-configuration TV has a larger light mixing distance and higher uniformity of light. Conversely, for a low-configuration TV , the light mixing distance is small, and the homogenization of light is low.

Figure 5a and Figure 5b show partial structural diagrams of display devices with different light mixing distances, as shown in Figure 5a and Figure 5b, the diffusion plate 02 is arranged on the support frame 105, and the support frame 105 is fixed on the back plate 01 , here the support frame 105, the back plate 01 and the middle frame 101 are three mutually independent structural parts, as shown in Figure 5a, the light mixing distance between the diffusion plate 02 supported on the support frame 105 and the light source is d1, when required When the light mixing distance d1 is increased to d2 in FIG. 5 b , not only the supporting frame 105 of the structural member needs to be replaced, but also the back plate 01 and the middle frame 101 of the structural member need to be replaced. That is to say, at least three structural parts need to be replaced, so that the back panel 01 and the middle frame 101 here are not compatible with high and low configuration products. Even if the light mixing distance can be changed, the product cost will be significantly increased.

For products with high and low configurations with different light mixing distances, in order to reduce manufacturing costs and shorten the development cycle, at least some structural components may need to be shared. For example, the embodiment of this application provides a display device with a compatible backplane. The following aims at The display device is described in detail.

FIG. 6 shows a cross-sectional view of a display device involved in the present application, and is a structural view cut along line A-A of FIG. 4 . FIG. 7 shows an enlarged view of M1 in FIG. 6 , and FIG. 7 is a structure diagram obtained after rotating 90° along the direction of P1 in FIG. 6 . FIG. 8 is a structural diagram of the middle frame 101 in FIG. 7 .

Combining with Fig. 6, Fig. 7 and Fig. 8, the display device includes a middle frame 101, and an accommodation cavity is formed in the middle frame 101, and the back plate 01 and the light diffusion module 106 are arranged in the accommodation cavity, and the back plate 01 is provided with As for the light source, the light diffusion module 106 is located at the light output side of the light source.

Among them, as shown in Figure 8, the middle frame 101 includes an outer frame 101a (because the middle frame in Figure 8 shows a partial structure, the entire ring structure is not shown), the space surrounded by the outer frame forms the above-mentioned accommodation chamber, and the outer frame 101a A first support platform 101b is provided, and the outer frame 101a and the first support platform 101b are in an integrated structure, that is to say, the outer frame 101a and the first support platform 101b are integral structural members. In addition, as shown in FIG. 8, the first support platform 101b has opposite supporting surface N1 surface and back surface N2 surface, and the supporting surface N1 surface and the back surface N2 surface are arranged along the axial direction of the annular structure (L direction as shown in Figure 8), and the light diffusion module 106 is arranged on the supporting surface N1 surface , the back plate 01 is located on the side of the back surface N2, and is connected to the middle frame 101. Here, the distance between the support surface N1 and the back surface N2 can be understood as the light mixing distance of the display device.

The above-mentioned display devices shown in FIGS. 6 to 8 can be understood in this way. In this display device, since the middle frame 101 not only includes the structure of the outer frame 101a, but also includes the first support platform 101b for supporting the light diffusion module 106 structure, and here the outer frame 101a and the first support platform 101b belong to an integrally formed structure, that is, the structure of the middle frame 101 can be obtained through one molding.

Figure 9 shows another enlarged view of M1 of the display device in Figure 6. The difference between Figure 7 and Figure 9 is that the light mixing distance is different. Comparing Figure 7 and Figure 9, when the light mixing distance is changed from Figure 7 to When d1 increases to d2 in Figure 9, only the structure of the middle frame 101 needs to be replaced, and it can also be considered that it is necessary to re-open the mold to design another middle frame 101 to increase the height dimension of the first support platform 101b (as shown in the h dimension of Figure 9) , for the structure of the backplane 01, it can be used compatiblely in display device products with different configurations. In this case, compared with the structure shown in Figure 5a and Figure 5b, it can be easily known that: due to the design of the new middle frame 101 structure shown in Figure 8, the backplane 01 is compatible, so that in the design For products with different configurations, only the middle frame 101 needs to be changed, and the compatibility of different light mixing distances can be achieved without changing other components, and the development time of products with different configurations can be shortened, and the manufacturing cost can be correspondingly reduced.

In addition, since the independent structural parts used to support the support frame of the light diffusion module are omitted, in this case, in the assembly process of the display device, the assembly process can be simplified, the assembly efficiency can be improved, and the The independent support frame may cause hidden dangers to the performance of the display device due to the entry of other foreign matter into the display device.

7 and 8, the middle frame 101 includes not only the outer frame 101a and the first support platform 101b, but also the second support platform 101c arranged in the outer frame 101a, and the display panel 102 of the display device is arranged on the second support platform. on the platform 101c and on the side away from the first supporting platform 101b. That is, the second supporting platform 101c here is used as a supporting structure of the display panel 102 to support the arranged display panel 102 .

Also, as shown in Figures 7 and 8, the second support platform 101c is located on the side of the first support platform 101b away from the backplane 01, a groove 101d is formed between the second support platform 101c and the first support platform 101b, and the light is diffused The module 106 is disposed in the groove 101d.

In actual implementation, the middle frame 101 can be fixedly connected with the backplane 01 first, then the light diffusion module 106 can be installed in the groove 101d, and then the display panel 102 can be installed to obtain a partial structure of the display device.

In order to make the light diffusion module 106 easier to install in the groove 101d, the edge part of the groove 101d can be designed as an arc structure, and the arc structure can play a guiding role to facilitate sliding the light diffusion module 106 into the groove 101d. The groove 101d is used to improve the assembly efficiency of the light diffusion module 106 .

In addition, as shown in FIG. 8 , the outer frame 101a, the first supporting platform 101b and the second supporting platform 101c are in an integrated structure. That is, the outer frame 101a, the first support platform 101b and the second support platform 101c belong to an integral structure. For example, the middle frame 101 can be made by extrusion molding. Extrusion molding (extrusion molding) is also called extrusion molding or extrusion molding. A molding method in which the polymer material is forced to pass through the head mold under the pressure to form a continuous profile with a constant cross section. The extrusion molding process mainly includes the processes of feeding, melting plasticization, extrusion molding, shaping and cooling.

For example, when the middle frame 101 is manufactured by extrusion molding, as shown in FIG. craft formation. When the cavity 101f is formed, the weight of the entire middle frame 101 can be reduced, paving the way for a lightweight design of the display device. Certainly, the first supporting platform 101b may not have the cavity 101f shown in FIG. 9 .

When installing the display panel 102 , in order to have a buffering effect on the display panel 102 , as shown in FIG. 9 , the foam glue 110 can be provided on the second supporting platform 101 c first, and then the display panel 102 is installed on the foam glue 110 . Certainly, other cushioning materials may also be used to be disposed on the contact surface between the display panel 102 and the second supporting platform 101c.

In some optional implementation manners, the middle frame 101 may be made of plastic material, or may be made of metal material. In this application, there is no special limitation on the material and molding process of the middle frame 101 .

The structure of the light diffusion module 106 of the present application has many kinds. For example, FIG. 9 shows the structure of one of the light diffusion module 106. 1061 is stacked on the light emitting side of the diffusion plate 1062. That is, the diffusion plate 1062 is closer to the light source than the light film 1061, and the light emitted by the light source is diffused by the diffusion plate 1062, and after homogenization treatment, it is further homogenized by the light film 1061, which can obviously improve the display panel. 102 visual effects.

Compared with the above-mentioned diffuser plate 1062 and the optical module sheet 1061, the diffuser plate 1062 is thicker and belongs to a rigid structural member, while the thickness of the optical film 1061 is smaller and belongs to a flexible structural member. Furthermore, the stacked diffuser plate 1062 and optical film 1061 are in accordance with When laying in the direction shown in Figure 6, the phenomenon shown in 10 may occur, where Figure 10 is the structure diagram at M2 in Figure 6 and rotated 90° along the direction of P1 in Figure 6, combined with Figure 10, it is a rigid The diffuser plate 1062 of the structural member will abut against the middle frame 101, and the light film 1061 belonging to the flexible structural member will shift from the black solid line position to the black dotted line position as shown in Figure 10. In this case, it will The effect of the optical film 1061 on light uniformity treatment is reduced, and even the visual effect of the display panel 102 is affected.

It should be noted that FIG. 10 only shows one example of the relative displacement of the light film 1061 and the diffusion plate 1062. In other scenarios, the light film 1061 may move in other ways, which are not exhaustive here. In short, the light film 1061 is not disposed on the diffuser plate 1062 in parallel.

In order to stack the light film 1061 flatly on the diffuser plate 1062, as shown in FIG. The sheet 1061 moves relative to the diffusion plate 1062 . That is, the optical film 1061 is fixed on the second supporting platform 101c of the middle frame 101 through the connection structure 107 .

Because the display device is generally fixed on the bracket in the vertical direction shown in FIG. the end away from the ground.

Figure 12 shows one of the achievable structures of the connecting structure 107, the connecting structure 107 includes a pulling part 1071 and an insertion part 1072 connected with the pulling part 1071, with reference to Figure 11 and Figure 12, the pulling part 1071 and The second support platform 101c is connected, and the insertion part 1072 is inserted into the optical film 1061 through the second support platform 101c, so that the optical film 1061 is fixedly connected with the second support platform 101c.

The connection structure 107 in FIG. 12 can be made of metal springs, and of course, it can also be made of other materials.

The hole of the optical film 1061 for inserting the insertion portion 1072 may be a blind hole not penetrating the optical film 1061 , or a through hole penetrating the optical film 1061 as shown in FIG. 11 .

When the display device 100 is in use, the light source emits heat when it emits light, and the diffusion plate 1062 may thermally expand due to heat absorption. Then, when the hole on the optical film 1061 is a through hole, for Reserve expansion space for the diffusion plate 1062, as shown in Figure 11, the bottom end surface of the insertion part 1072 inserted into the light film 1061 needs to be flush with the surface of the light film 1061 close to the diffusion plate 1062, so that the insertion part 1072 cannot protrude from the light film 1061.

In some optional implementation structures, as shown in FIG. 11 , a concave cavity is formed on the surface of the second support platform 101 c supporting the display panel 102 , and the pulling part 1071 is located in the concave cavity. In this way, the possibility of interference between the pulling portion 1071 and the display panel 102 can be reduced.

Because it is necessary to make the optical film 1061 fixedly connected to the second support platform 101c through the connection structure 107, and at the same time, it is also necessary to ensure the uniformity of the light transmitted to the upper edge of the display panel 102. As shown in FIG. 11, the optical film can be The outer edge of the sheet 1061 extends to the outside of the outer edge of the diffuser plate 1062 , that is, the orthographic projection of the diffuser plate 1062 on the optical film 1061 is located within the edge of the optical film 1061 .

Figure 11 and Figure 12 above show one of the realization structures of the connection structure 107. In addition, Figure 13 and Figure 14 show another structure of the connection structure 107. In this embodiment, the optical film 1061 and the The diffusion plate 1062 is connected to prevent the light film 1061 from moving relative to the diffusion plate 1062 . Specifically, referring to FIG. 13 and FIG. 14 together, the light film 1061 includes a body portion 1061a covering the diffusion plate 1062 and an extension portion 1061b located on the outer edge of the body portion 1061a; the extension portion 1061b is bent toward the diffusion plate 1062, and The connection structure 107 is formed by wrapping at least the side of the diffuser plate 1062 , that is, wrapping the extension portion 1061 b of the diffuser plate 1062 .

For the connection structure 107 shown in Figure 13 and Figure 14, it can be understood that the light film 1061 and the diffuser plate 1062 are fixed together by using the extension part 1061b, so that the light film 1061 and the diffuser plate 1062 are combined into one connected The structural member thus prevents the flexible optical film 1061 from moving relative to the diffuser plate 1062 .

In some optional implementation structures, the extension part 1061b of the optical film 1061 can only wrap the side of the diffuser plate 1062; in some other optional implementation structures, as shown in Figure 14, the extension part 1061b can not only The side of the plate 1062 may further wrap the bottom of the diffuser 1062 , where the bottom of the diffuser 1062 refers to the surface of the diffuser 1062 close to the light source.

When the light film 1061 and the diffuser plate 1062 are relatively fixed, in order to further enhance the connection strength between the light film 1061 and the diffuser plate 1062 , an adhesive layer can be provided at the interface where the extension portion 1061b contacts the diffuser plate 1062 .

In some implementations, after the light emitted from the light diffusion module 106 is projected onto the display panel 102, sometimes the light in the central area of the display panel 102 is stronger than the light in the edge area, so that the light in the entire display panel 102 is uneven, In order to alleviate the degree of unevenness, as shown in Figure 15, a reflective structure 108 can be formed on the side of the first support platform 101b of the middle frame 101 facing the central area of the accommodating cavity, and the reflective structure 108 is used to reflect the light from the light source to the light diffuser The edge area of the module 106 (the position of the edge area of the light diffusion module 106 and the path where the light is reflected are schematically shown in FIG. 15 ), so that the light in the edge area of the display panel 102 can be enhanced. Strength of.

In some structures, for example, as shown in FIG. 16, along the direction parallel to the light diffusion module 106, when the distance S between the light source 03 on the outer edge of the light source and the edge of the light diffusion module 106 is relatively large, it may The light in the edge area of the display panel will be weakened, and then the reflective structure 108 can be used to enhance the light intensity in the edge area of the display panel, so that the light intensity in the edge area of the display panel is consistent and uniform with that in the central area.

The reflective structure 108 in Figure 15 and Figure 16 can be pasted on the reflective film on the side of the first support platform 101b, and in some other implementations, it is also possible to coat the side of the first support platform 101b with a reflective material to form a reflective structure, or , by oxidizing the side surface of the first supporting platform 101b to form a reflective structure. The reflective structure can also be formed by other arrangement methods. The reflective structure formed by surface treatment of the side surface of the first supporting platform 101 b may be referred to as a reflective structure integrated with the first supporting platform.

Also, in some other embodiments, for example, when the red intensity of the edge area of the display panel 102 is stronger than that of the central area, a light-absorbing structure may be provided on the side of the first support platform 101b to partially absorb the red color emitted by the light source and weaken the red color. The red intensity of the edge area of the display panel 102 .

Therefore, according to the color difference between the edge area and the central area of the display panel, a light absorbing structure can be provided on the side of the first supporting platform 101b, so as to make the color of the display panel uniform and improve the visual effect.

In some structures, for example, as shown in FIG. 16 , along the direction parallel to the light diffusion module 106, when the distance S between the light source 03 on the outer edge of the light source and the edge of the light diffusion module 106 is small, the The light absorption structure is used to adjust the color of the light in the edge area of the display panel, so that the color of the light in the edge area of the display panel is consistent with that in the central area.

For the light-absorbing structure, there are at least two achievable structures, such as pasting a light-absorbing film on the side of the first supporting platform 101b. structure, or a light-absorbing structure is formed by oxidizing the side surface of the first supporting platform 101b.

In addition, as shown in FIG. 15 and FIG. 16 , during design, the inclination angle of the side of the first supporting platform 101 b can also be changed to adjust the intensity of light in the edge area of the display panel 102 .

The backplane 01 in the embodiment of the present application needs to be connected with the middle frame 101. As shown in FIG. The first part 01a on one side and the second part 01b connected to the first part 01a, and the second part 01b is bent toward the light diffusion module 106 and inserted into the inlay groove 101e.

In order to further enhance the connection strength between the backplane 01 and the middle frame 101, as shown in Figure 17, in the structure shown in Figure 17, not only the second part 01b of the backplane 01 is bent toward the light diffusion module 106, but also inserted into the Fasteners 109 are also included in the groove 101e, and the first part 01a of the backboard 01 is fixedly connected with the first support platform 101b through the fasteners 109, where the fasteners 109 can be bolts, rivets and the like.

In the description of this specification, specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in an appropriate manner.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the present invention, and should cover all Within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

A display device, characterized in that it comprises:

a middle frame with an accommodating cavity formed therein;

a backboard, arranged in the accommodating cavity, and a light source is arranged on the backboard;

The light diffusion module is arranged in the accommodating cavity and is located on the light emitting side of the light source;

Wherein, the middle frame includes an outer frame, the space enclosed by the outer frame forms the accommodation chamber, the outer frame is provided with a first support platform, and the outer frame and the first support platform are in an integral structure ;

The first supporting table has a supporting surface and a back surface opposite to each other, the light diffusion module is arranged on the supporting surface, the back plate is located on one side of the back surface, and is connected with the middle frame, and the supporting The distance between the face and the back forms the light mixing distance of the display device.
The display device according to claim 1, wherein the middle frame further comprises: a second support platform arranged in the outer frame, and the outer frame, the first support platform and the second support platform are The two supporting platforms are of an integrated structure;

The second support platform is located on the side of the first support platform away from the back plate, a groove is formed between the second support platform and the first support platform, and the light diffusion module is arranged on in said groove;

The display device further includes a display panel, and the display panel is arranged on the second support platform and is located on a side away from the first support platform.
The display device according to claim 2, wherein the light diffusion module includes a diffusion plate and a light film, and the light film is stacked on the light exit side of the diffusion plate;

The display device further includes: a connection structure, the connection structure connects the optical film to the second supporting platform, so as to prevent the optical film from moving relative to the diffusion plate.
The display device according to claim 3, wherein the connecting structure comprises a pulling part and an insertion part connected to the pulling part, and the pulling part is connected to the second supporting platform, so The insertion part is inserted into the optical film through the second support platform, so that the optical film is fixedly connected with the second support platform.
The display device according to claim 4, wherein a concave cavity is formed on the surface of the second supporting platform supporting the display panel, and the pulling part is located in the concave cavity.
The display device according to claim 1, wherein the light diffusion module includes a diffusion plate and a light film, and the light film is stacked on the light exit side of the diffusion plate;

The display device further includes: a connection structure, the connection structure connects the light film to the diffusion plate, so as to prevent the light film from moving relative to the diffusion plate.
The display device according to claim 6, wherein the light film comprises a body part covering the diffusion plate and an extension part located at the outer edge of the body part;

The extension part is bent toward the diffuser plate and at least wraps around the side of the diffuser plate, and the extension part wrapping the diffuser plate forms the connecting structure.
The display device according to any one of claims 1-7, wherein the first support platform includes a side face facing the central area of the accommodating cavity, and a light-reflecting structure is formed on the side face, and the light-reflecting structure It is used to reflect the light from the light source to the edge area of the light diffusion module.
The display device according to claim 8, wherein the reflective structure comprises a reflective film pasted on the side surface.
The display device according to claim 8, characterized in that, the reflective structure and the first supporting platform are integrally formed.
The display device according to any one of claims 1 to 7, wherein the first support platform includes a side face facing the central area of the accommodating cavity, a light absorbing structure is formed on the side face, and the light absorbing structure Used to absorb light from the light source in question.
The display device according to any one of claims 1-11, wherein an inlay groove is formed between the first support platform and the outer frame;

The back plate includes a first part located on the back side and a second part connected to the first part, the second part is bent toward the light diffusion module and inserted into the mosaic groove .
The display device according to claim 12, wherein the first part is fixedly connected to the first supporting platform through a fastener.