TW202215127A - Backlight module and display apparatus - Google Patents

Abstract

A backlight module includes a backboard, a light-emitting component, a front frame, a plastic frame, an optical film set, and an elastic member. The light-emitting component is disposed on the backboard. The front frame has an annular outer wall located around the backboard and a cover portion protruding from an inner surface of the annular outer wall. The cover portion extends from the inner surface of the annular outer wall to a position above a periphery of the backboard. The plastic frame is disposed between the periphery of the backboard and the front frame, and has an upper surface away from the backboard and a plurality of protrusions protruding from the upper surface. Each of the protrusions has a bevel toward the annular outer wall. The optical film set is disposed on a side of the light-emitting component away from the backboard, and has a periphery area corresponding to the plastic frame. The periphery area is between the cover portion and the plastic frame, and has a plurality of openings. A gap is between the periphery area and the upper surface. The protrusions pass through the openings, and the bevel of each of the protrusions contacts a wall surface of the optical film surrounding the corresponding opening. The elastic member is disposed between the periphery area and the front frame.

Description

Backlight module and display device

The present invention relates to an optical module and a display device, and more particularly, to a backlight module and a display device.

The display device includes a backlight module and a display panel. The backlight module can provide a surface light source to the display panel, so that the user can watch the image displayed by the display panel. In current display devices, a common practice is to use a plastic frame to carry the optical film set, and to fix the optical film set to the protruding structure of the plastic frame. However, in this approach, a support structure must be added under the optical film set to support the optical film set, so as to avoid the optical film set from being deformed and collapsed due to cold shrinkage and thermal expansion under the environment of high and low temperature changes, which will affect the Optical effect.

However, increasing the support structure will increase the overall thickness and production cost of the backlight module. Therefore, how to maintain the flatness of the optical film set in the backlight module without adding an additional supporting structure is one of the challenges that related manufacturers need to face during design and development.

The "prior art" paragraph is only used to help understand the present disclosure, so the content disclosed in the "prior art" paragraph may contain some that do not constitute the prior art known to those with ordinary skill in the art. The content disclosed in the "prior art" paragraph does not represent the content or the problem to be solved by one or more embodiments of the present invention, and has been known or recognized by those with ordinary knowledge in the technical field before the application of the present invention.

The present invention provides a backlight module, which can reduce the probability of deformation and collapse of the optical film group.

The present invention provides a display device having the above-mentioned backlight module.

Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

In order to achieve one or part or all of the above-mentioned purposes or other purposes, an embodiment of the present invention provides a backlight module. The backlight module includes a backplane, a light-emitting component, a front frame, a plastic frame, an optical film set and an elastic member. The light-emitting components are arranged on the backplane. The front frame has an annular outer wall and a covering portion protruding from the inner surface of the annular outer wall. An annular outer wall surrounds the back panel. The covering portion extends from the inner surface of the annular outer wall to above the periphery of the back plate. The plastic frame is arranged between the periphery of the backboard and the front frame. The plastic frame has an upper surface away from the back plate and a plurality of protruding posts protruding from the upper surface, and each protruding post respectively has an inclined surface inclined toward the annular outer wall of the front frame. The optical film set is disposed on the side of the light-emitting component away from the backplane, and has a surrounding area corresponding to the plastic frame. The surrounding area is located between the covering portion of the front frame and the plastic frame. There is a gap between the surrounding area and the upper surface of the plastic frame. The surrounding area has a plurality of openings. The protruding pillars are respectively corresponding to and pass through the opening, and the inclined surface of each protruding pillar contacts the wall surface of the surrounding area beside the corresponding opening. The elastic member is pre-pressed and disposed between the surrounding area of the optical film set and the covering portion of the front frame, so that the wall surfaces of the surrounding area beside each opening continuously contact the inclined surface.

In an embodiment of the present invention, the angle between the inclined surface of each of the protruding pillars and the upper surface is between 60 degrees and 80 degrees.

In an embodiment of the present invention, each of the above-mentioned protruding posts respectively has an inner surface away from the annular outer wall, and the inner surface does not contact the wall surface of the surrounding area beside the corresponding opening.

In an embodiment of the present invention, the above-mentioned light-emitting component is a direct-type light-emitting component, and the light-emitting component includes a circuit board and a plurality of light sources disposed on the circuit board.

In an embodiment of the present invention, the material of the elastic member includes microcellular polymer material, foam, rubber or silicone.

In an embodiment of the present invention, the above-mentioned optical film set includes a diffusion film, a fluoroscopy film or/and a brightness enhancement film.

In order to achieve one or a part or all of the above objectives or other objectives, an embodiment of the present invention provides a display device. The display device includes a backlight module and a display panel. The backlight module includes a backplane, a light-emitting component, a front frame, a plastic frame, an optical film set and an elastic member. The light-emitting components are arranged on the backplane. The front frame has an annular outer wall and a covering portion protruding from the inner surface of the annular outer wall. An annular outer wall surrounds the back panel. The covering portion extends from the inner surface of the annular outer wall to above the periphery of the back plate. The plastic frame is arranged between the periphery of the backboard and the front frame. The plastic frame has an upper surface away from the back plate and a plurality of protruding posts protruding from the upper surface, and each protruding post respectively has an inclined surface inclined toward the annular outer wall of the front frame. The optical film set is disposed on the side of the light-emitting component away from the backplane, and has a surrounding area corresponding to the plastic frame. The surrounding area is located between the covering portion of the front frame and the plastic frame. There is a gap between the surrounding area and the upper surface of the plastic frame. The surrounding area has a plurality of openings. The protruding pillars are respectively corresponding to and pass through the opening, and the inclined surface of each protruding pillar contacts the wall surface of the surrounding area beside the corresponding opening. The elastic member is pre-pressed and disposed between the surrounding area of the optical film set and the covering portion of the front frame, so that the wall surfaces of the surrounding area beside each opening continuously contact the inclined surface. The display panel is located on the light-emitting side of the backlight module, and is arranged on the front frame of the backlight module.

In an embodiment of the present invention, the angle between the inclined surface of each of the protruding pillars and the upper surface is between 60 degrees and 80 degrees.

In an embodiment of the present invention, each of the above-mentioned protruding posts respectively has an inner surface away from the annular outer wall, and the inner surface does not contact the wall surface of the surrounding area beside the corresponding opening.

In an embodiment of the present invention, the above-mentioned light-emitting component is a direct-type light-emitting component, and the light-emitting component includes a circuit board and a plurality of light sources disposed on the circuit board.

In an embodiment of the present invention, the material of the elastic member includes microcellular polymer material, foam, rubber or silicone.

In an embodiment of the present invention, the above-mentioned optical film set includes a diffusion film, a fluoroscopy film or/and a brightness enhancement film.

Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. In the embodiment of the present invention, the convex column of the plastic frame in the backlight module passes through the opening of the optical film set. The inclined surface of the convex column is inclined toward the annular outer wall of the front frame and is in contact with the wall surface of the optical film set next to the opening, and bears against the optical film set, so that the optical film set is in a taut state. The elastic member is pre-pressed and disposed between the surrounding area of the optical film set and the covering portion of the front frame, and pushes down the optical film set. With the above configuration, the optical film set is held in this position by the elastic member and the inclined surface of the protruding post. Since there is a gap between the upper surface of the plastic frame and the optical film set, when the optical film set expands due to the temperature rise, the wall surface of the optical film set next to the opening will move away from the original contact position on the inclined surface. At the same time, the elastic member releases the pre-compression pressure, so that the optical film group is pushed away in the direction of the upper surface of the plastic frame, until the wall surface of the optical film group next to the opening contacts another position on the slope of the convex column (this The contact position will be closer to the upper surface of the plastic frame than the original position), that is to say, the wall surface of the optical film group next to the opening will move down along the slope of the convex column, so that the optical film group is still convex. The sloping surface of the column is pressed against and in a taut state. Similarly, when the optical film group shrinks due to the decrease in temperature, the optical film group can move up along the slope of the convex column and continue to be in a taut state. Therefore, the optical film set of the present invention can always maintain a straight state without being affected by temperature, and will not be wrinkled or slack and collapsed due to the change of high and low temperature, and has good optical performance. In addition, the backlight module, through the cooperation of the plastic frame, the optical film set and the elastic member, can maintain the flatness of the optical film set without adding additional supporting structures below the optical film set, without increasing the backlight. The overall thickness of the module and the production cost.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or rear, etc., are only for referring to the directions of the attached drawings. Accordingly, the directional terms used are illustrative and not limiting of the present invention.

FIG. 1 is a schematic side view of a display device according to an embodiment of the present invention. It is particularly noted that, for the sake of clarity, FIG. 1 only shows the parts of the display device near two sides. Referring to FIG. 1 , the display device 10 of this embodiment includes a backlight module 100 and a display panel 200 , wherein the backlight module 100 is, for example, a direct type backlight module. In other embodiments, the backlight module 100 It can also be a side type backlight module. The display panel 200 is located on the light-emitting side 100 a of the backlight module 100 . The backlight module 100 is suitable for providing a display light source to the display panel 200 .

It should be noted that, generally speaking, some direct type backlight modules have a diffuser plate above the light source to achieve the effect of uniform light. Since the diffuser plate is located on the side of the optical film group close to the light source, and the thickness of the diffuser plate is larger than that of the optical film group, the diffuser plate can be used to support the optical film group to avoid the temperature change of the optical film group. After the second thermal expansion and cold contraction, the material is elastically fatigued, relaxed and collapsed, which affects the optical effect. However, it is difficult to reduce the overall thickness of the backlight module with the diffuser plate, and the cost and weight are relatively high.

The backlight module 100 of the present embodiment can be a direct-type backlight module without a diffuser plate, which has a special structure, which enables the optical film group 150 in the backlight module 100 to be free from additional supporting structures below. On the premise, the flatness can be maintained and the straight state can be maintained at all times, and the optical film group 150 will not cause material relaxation and collapse after repeated thermal expansion and cold contraction due to high and low temperature changes, and has good optical performance.

In detail, please refer to FIG. 1 , the backlight module 100 of the display device 10 of this embodiment includes a backplane 110 , a light-emitting component 120 , a front frame 130 , a plastic frame 140 , an optical film set 150 and an elastic member 160 . The back plate 110 has a peripheral edge 110a. The light-emitting component 120 is disposed on the backplane 110 . The display panel 200 is disposed on the front frame 130 . In this embodiment, the light-emitting element 120 is, for example, a direct-lit light-emitting element, and includes a circuit board 122 and a plurality of light sources 124 disposed on the circuit board 122 . The light source 124 may be a light emitting diode (LED), but the present invention is not limited thereto.

In this embodiment, the front frame 130 has an annular outer wall 132 . The annular outer wall 132 surrounds the back plate 110 and has an inner surface 132 a close to the back plate 110 . The front frame 130 also has a cover portion 134 , the cover portion 134 protrudes from the inner surface 132 a of the annular outer wall 132 and extends from the inner surface 132 a of the annular outer wall 132 to above the periphery 110 a of the back plate 110 . For example, the front frame 130 can be used as an exterior part of the display device 10 and can also be used as a connecting part between the backlight module 100 and the display panel 200 .

In addition, in this embodiment, the plastic frame 140 is disposed between the peripheral edge 110 a of the back plate 110 and the front frame 130 . The plastic frame 140 has an upper surface 140a away from the backplane 110 and a plurality of protruding posts 142 protruding from the upper surface 140a. The optical film set 150 is disposed on the side of the light-emitting element 120 away from the back plate 110 and is divided into a peripheral area 152 and a central area 154 , wherein the peripheral area 152 corresponds to the plastic frame 140 and is located between the cover portion 134 and the plastic frame of the front frame 130 140, the central area 154 is located on the path of the illumination beam (not shown) emitted by the light emitting element 120, and is suitable for transmitting the illumination beam to the display panel 200 as a display light source.

FIG. 2 is a schematic diagram of the display device of FIG. 1 at normal temperature. Referring to FIG. 2 , in this embodiment, the protruding posts 142 of the plastic frame 140 respectively have inclined surfaces 142 a inclined toward the annular outer wall 132 of the front frame 130 and inner surfaces 142 b away from the annular outer wall 132 . The peripheral area 152 of the optical film set 150 has an opening 158 , and the opening 158 has a wall surface 158 a corresponding to the inclined surface 142 a of the convex column 142 and a wall surface 158 b corresponding to the inner surface 142 b of the convex column 142 . The protruding columns 142 of the plastic frame 140 correspond to and pass through the openings 158 of the optical film set 150 respectively. In addition, there is a gap between the peripheral area 152 of the optical film set 150 and the upper surface 140 a of the plastic frame 140 , such as the gap G shown in FIG. 2 .

In addition, in this embodiment, the optical film set 150 may include, for example, an upper diffusing film 155 , a diaphragm 156 , a brightness enhancement film 157 and a lower diffusing film 159 , through the above configuration, the optical film set 150 has the effect of uniform light. . Therefore, the optical film set 150 can replace the diffusion plate. However, the present invention does not limit the number, structure and type of the optical film set 150 . In different embodiments, the configuration of the optical film set 150 can be further adjusted according to requirements, and the present invention is not limited thereto.

In this embodiment, the elastic member 160 is pre-pressed and disposed between the peripheral area 152 of the optical film set 150 and the covering portion 134 of the front frame 130 . In addition, the material of the elastic member 160 of this embodiment includes microcellular polymer material, foam, rubber and silicone. However, as long as the elastic member 160 can release the pre-pressed pressure and be compressed by an external force, the present invention does not limit the material, structure and type of the elastic member 160 .

As can be seen from FIG. 2 , the convex pillars 142 of the plastic frame 140 in the backlight module 100 pass through the openings 158 of the optical film set 150 . The inclined surface 142a of the convex column 142 is inclined toward the annular outer wall 132 of the front frame 130 and is in contact with the wall surface 158a of the optical film set 150 beside the opening 158, and bears against the optical film set 150, so that the optical film set 150 is stretched. tight state. The elastic member 160 is pre-pressed and disposed between the surrounding area 152 of the optical film set 150 and the cover portion 134 of the front frame 130, and the optical film set 150 is pushed down, so that the surrounding area 152 of the optical film set 150 is in the opening The wall surface 158a beside 158 is in continuous contact with the inclined surface 142a of the protruding post 142 . In other words, with the above configuration, the optical film set 150 is limited by the elastic member 160 and the inclined surface 142a of the convex column 142 to maintain this position (between the surrounding area 152 of the optical film set 150 and the upper surface 140a of the plastic frame 140 ) at this position of the gap G).

FIG. 3 is a schematic diagram of FIG. 2 as the temperature increases. Please refer to FIG. 2 and FIG. 3 , when the display device 10 is heated from the normal temperature state shown in FIG. 2 , it will change to the state shown in FIG. 3 , and the optical film group 150 is heated and expands outward. At the same time, the elastic member 160 releases the pre-pressed pressure and pushes down the surrounding area 152 of the optical film set 150 , so that the optical film set 150 moves toward the upper surface 140 a of the plastic frame 140 until the opening 158 of the optical film set 150 is reached. The adjacent wall surface 158a contacts another position on the inclined surface 142a of the protruding post 142 (at this time, the contacted position is closer to the upper surface 140a of the plastic frame 140 than the original position). At this time, the gap G ( FIG. 2 ) between the peripheral area 152 of the optical film set 150 and the upper surface 140 a of the plastic frame 140 is reduced to the gap G1 ( FIG. 3 ). That is, when the display device 10 is heated from the normal temperature state shown in FIG. 2 , the wall surface 158 a of the optical film set 150 next to the opening 158 will move down along the slope 142 a of the convex column 142 , so that the optical film set 150 is still The inclined surface 142a of the protruding post 142 is pressed against and is in a tight state.

FIG. 4 is a schematic diagram of FIG. 2 when the temperature is lowered. Referring to FIGS. 2 and 4 , when the display device 10 is cooled down from the normal temperature state shown in FIG. 2 , it will change to the state shown in FIG. 4 . The optical film group 150 shrinks inward when cooled, and the opening 158 of the optical film group 150 is adjacent to the opening 158 . The wall surface 158a moves upward (a direction away from the upper surface 140a of the plastic frame 140 ) along the inclined surface 142a of the protruding post 142 , and compresses the elastic member 160 , and the optical film set 150 continues to be in a taut state. At this time, the gap G ( FIG. 2 ) between the peripheral area 152 of the optical film set 150 and the upper surface 140 a of the plastic frame 140 is increased to a gap G2 ( FIG. 4 ).

Therefore, the optical film set 150 can be kept in a straight state without being affected by temperature, without wrinkles or slack and collapse due to the change of high and low temperature, and has good optical performance.

It is worth mentioning that, in order to enable the optical film set 150 to move up and down smoothly, the other wall surface 158b of the opening 158 of the surrounding area 152 is not in contact with the inner surface 142b of the convex column 142 . In this embodiment, the upper surface 140a of the protruding post 142 is perpendicular to the inner surface 142b of the protruding post 142, but the inner surface 142b may not be perpendicular to the upper surface 140a. When the wall surface 158a next to the opening 158 of the optical film set 150 moves along the inclined surface 142a of the convex column 142, the other wall surface 158b of the opening 158 in the surrounding area 152 does not interfere with the inner surface 142b of the convex column 142.

In addition, it should be noted that in this embodiment, the angle θ between the upper surface 140a of the plastic frame 140 and the inclined surface 142a of the protruding column 142 is between 60 degrees and 80 degrees, so that in the case of thermal expansion and contraction In this case, the wall surface 158a next to the opening 158 of the optical film set 150 can also smoothly move along the direction of the inclined surface 142a of the convex column 142, and the optical film set 150 can be moved by the convex column under the condition that the temperature does not change. The inclined surface 142a of 142 abuts against, but the present invention is not limited to this.

To sum up, the embodiments of the present invention have at least one of the following advantages or effects. In the embodiment of the present invention, the convex column of the plastic frame in the backlight module passes through the opening of the optical film set. The inclined surface of the convex column is inclined toward the annular outer wall and is in contact with the wall surface of the optical film set next to the opening, and bears against the optical film set, so that the optical film set is in a taut state. The elastic member is pre-pressed and disposed between the surrounding area of the optical film set and the covering portion of the front frame, and pushes down the optical film set. With the above configuration, the optical film set is held in this position by the elastic member and the inclined surface of the protruding post. Since there is a gap between the upper surface of the plastic frame and the optical film set, when the optical film set expands due to the temperature rise, the wall surface of the optical film set next to the opening will move away from the original contact position on the inclined surface. At the same time, the elastic member releases the pre-compression pressure, so that the optical film group is pushed away in the direction of the upper surface of the plastic frame, until the wall surface of the optical film group next to the opening contacts another position on the slope of the convex column (this The contact position will be closer to the upper surface of the plastic frame than the original position), that is to say, the wall surface of the optical film group next to the opening will move down along the slope of the convex column, so that the optical film group is still convex. The sloping surface of the column is pressed against and in a taut state. Similarly, when the optical film group shrinks due to the decrease in temperature, the optical film group can move up along the slope of the convex column and continue to be in a taut state. Therefore, the optical film set of the present invention can always maintain a straight state without being affected by temperature, and will not be wrinkled or slack and collapsed due to the change of high and low temperature, and has good optical performance. In addition, the backlight module, through the cooperation of the plastic frame, the optical film set and the elastic member, can maintain the flatness of the optical film set without adding additional supporting structures below the optical film set, without increasing the backlight. The overall thickness of the module and the production cost.

Only the above are only preferred embodiments of the present invention, and should not limit the scope of the present invention, that is, any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the description of the invention, All still fall within the scope of the patent of the present invention. In addition, it is not necessary for any embodiment of the present invention or the claimed scope of the present invention to achieve all of the objects or advantages or features disclosed in the present invention. In addition, the abstract section and headings are only used to aid the search of patent documents and are not intended to limit the scope of the present invention. In addition, terms such as "first" and "second" mentioned in this specification or the scope of the patent application are only used to name the elements or to distinguish different embodiments or scopes, and are not used to limit the number of elements. upper or lower limit.

θ: included angle G, G1, G2: Gap 10: Display device 100: Backlight module 100a: light-emitting side 110: Backplane 110a: Perimeter 120: Lighting components 122: circuit board 124: light source 130: Front frame 132: annular outer wall 132a: inner surface 134: Covering Department 140: plastic frame 140a: Upper surface 142: convex column 142a: Bevel 142b: Inside 150: Optical diaphragm set 152: Surrounding area 154: Central District 155: Upper diffusion film 156: Pills 157: Brightness Enhancement Film 158: Opening 158a, 158b: Wall 159: Lower Diffusion Film 160: elastic parts 200: Display panel

FIG. 1 is a schematic side view of a display device according to an embodiment of the present invention. FIG. 2 is a schematic diagram of the display device of FIG. 1 at normal temperature. FIG. 3 is a schematic diagram of FIG. 2 as the temperature increases. FIG. 4 is a schematic diagram of FIG. 2 when the temperature is lowered.

10: Display device

100: Backlight module

100a: light-emitting side

110: Backplane

110a: Perimeter

120: Lighting components

122: circuit board

124: light source

130: Front frame

132: annular outer wall

132a: inner surface

134: Covering Department

140: plastic frame

140a: Upper surface

142: convex column

142a: Bevel

150: Optical diaphragm set

152: Surrounding area

154: Central District

158: Opening

160: elastic parts

200: Display panel

Claims (12)

A backlight module, comprising: a backboard; a light-emitting component disposed on the backplane; A front frame having an annular outer wall and a covering portion protruding from an inner surface of the annular outer wall, wherein the annular outer wall surrounds the back plate, and the covering portion extends from the inner surface of the annular outer wall to over a perimeter of the back plate; A plastic frame is disposed between the periphery of the backboard and the front frame, the plastic frame has an upper surface away from the backboard and a plurality of protruding posts protruding from the upper surface, each of the protruding posts are respectively having an inclined surface inclined toward the annular outer wall of the front frame; an optical film set, disposed on a side of the light-emitting component away from the back plate, and having a surrounding area corresponding to the plastic frame, wherein the surrounding area is located between the cover portion of the front frame and the plastic frame, There is a gap between the surrounding area and the upper surface of the plastic frame, the surrounding area has a plurality of openings, the protruding posts correspond to and pass through the openings, and the inclined surfaces of the protruding posts contact the periphery a wall of the area adjacent to the corresponding opening; and An elastic member is pre-pressed and disposed between the surrounding area of the optical film set and the covering portion of the front frame, so that the wall surface of the surrounding area beside each of the openings continuously contacts the inclined surface. The backlight module of claim 1, wherein an included angle between the inclined surface of each of the protruding columns and the upper surface is between 60 degrees and 80 degrees. The backlight module of claim 1, wherein each of the protruding columns has an inner surface away from the annular outer wall, and the inner surface does not contact the wall surface of the surrounding area beside the corresponding opening. The backlight module of claim 1, wherein the light-emitting component is a straight-down light-emitting component, and the light-emitting component includes a circuit board and a plurality of light sources disposed on the circuit board. The backlight module of claim 1, wherein the material of the elastic member comprises microcellular polymer material, foam, rubber or silicone. The backlight module according to claim 1, wherein the optical film set includes a diffusion film, a solar film or/and a brightness enhancement film. A display device, comprising: A backlight module, including: a backboard; a light-emitting component disposed on the backplane; A front frame having an annular outer wall and a covering portion protruding from an inner surface of the annular outer wall, wherein the annular outer wall surrounds the back plate, and the covering portion extends from the inner surface of the annular outer wall to over a perimeter of the back plate; A plastic frame is disposed between the periphery of the backboard and the front frame, the plastic frame has an upper surface away from the backboard and a plurality of protruding posts protruding from the upper surface, each of the protruding posts are respectively having an inclined surface inclined toward the annular outer wall of the front frame; an optical film set, disposed on a side of the light-emitting component away from the back plate, and having a surrounding area corresponding to the plastic frame, wherein the surrounding area is located between the cover portion of the front frame and the plastic frame, There is a gap between the surrounding area and the upper surface of the plastic frame, the surrounding area has a plurality of openings, the protruding posts correspond to and pass through the openings, and the inclined surfaces of the protruding posts contact the periphery a wall of the area adjacent to the corresponding opening; and an elastic member pre-pressed and disposed between the surrounding area of the optical film set and the covering portion of the front frame, so that the wall surface of the surrounding area next to each of the openings continuously contacts the inclined surface; and A display panel is located on a light-emitting side of the backlight module and disposed on the front frame of the backlight module. The display device of claim 7, wherein an included angle between the inclined surface of each of the protruding pillars and the upper surface is between 60 degrees and 80 degrees. The display device of claim 7, wherein each of the protruding columns has an inner surface away from the annular outer wall, and the inner surface does not contact the wall surface of the surrounding area beside the corresponding opening. The display device according to claim 7, wherein the light-emitting component is a direct-type light-emitting component, and the light-emitting component includes a circuit board and a plurality of light sources disposed on the circuit board. The display device according to claim 7, wherein the material of the elastic member comprises microcellular polymer material, foam, rubber or silicone. The display device as claimed in claim 7, wherein the optical film set comprises a diffusion film, a fluoroscopy film or/and a brightness enhancement film.

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