Support column, backlight module and display device

Abstract

The application discloses a support column, a backlight module and a display device. The support column comprises a support main body, the support main body is a flexible piece, the support main body is provided with an embedding groove, the support column further comprises a center rod, a coil and a magnetic piece, the center rod is embedded in the embedding groove; the coil is wound outside the center rod and located in the embedding groove; the magnetic piece is embedded in the support main body, the magnetic field direction of the magnetic piece is arranged at an acute angle or a right angle with the axis of the center rod, one end of the magnetic piece is close to the center rod, and the other end of the magnetic piece is away from the center rod. According to the technical scheme, the coil is wound on the center rod, the magnetic field direction of the magnetic piece embedded in the support main body is arranged at an acute angle or a right angle with the axis of the center rod, one end of the magnetic piece is close to the center rod, and the other end of the magnetic piece is away from the center rod, so that the magnetic piece is displaced under the condition that the coil is electrified, the support main body is deformed, the light is subjected to the phenomenon of diffuse reflection on the side wall of the support main body, and the condition that the light forms a shadow on the diffusion plate after passing through the support column is weakened.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a support column, a backlight module using the support column and a display device using the backlight module. BACKGROUND

[0002] In a conventional backlight module, a space is provided between a back plate and a diffusion plate so that light emitting bodies provided on the back plate can uniformly emit light onto the diffusion plate. In order to prevent the diffusion plate from being bent, a plurality of rigid support columns are usually arranged on the backlight frame to support the diffusion plate. A plurality of light emitting bodies are arranged around each support column, and the light emitted by the light emitting bodies tends to form a dark shadow on the diffusion plate after passing through the support column, which seriously affects the display quality. In addition, due to different positions and stress conditions, the dark shadow formed in the area of each support column also differs, which also seriously affects the display quality. SUMMARY

[0003] The main purpose of the present application is to provide a support column, which aims to improve the problem that light tends to form a dark shadow on the diffusion plate after passing through the support column.

[0004] To achieve the above-mentioned purpose, the support column provided by the present application comprises a support body, the support body is a flexible member, the support body is provided with an embedding groove, the support column further comprises a center rod, a coil and a magnetic member, the center rod is embedded in the embedding groove; the coil is wound outside the center rod and located in the embedding groove; the magnetic member is embedded in the support body, the magnetic field direction of the magnetic member is arranged at an acute angle or a right angle with the axis of the center rod, and one end of the magnetic member is close to the center rod and the other end is away from the center rod.

[0005] In an embodiment, the magnetic member comprises:

[0006] a first magnetic member embedded in the support body; and

[0007] a second magnetic member embedded in the support body, the magnetic field directions of the first magnetic member and the second magnetic member are along the radial direction of the center rod, and the magnetic field directions of the first magnetic member and the second magnetic member are the same or opposite;

[0008] The support body has a central surface perpendicular to the axis of the center rod, the central surface passes through the center of the center rod, and the first magnetic member and the second magnetic member are arranged on the two sides of the central surface.

[0009] In an embodiment, the support body has a bottom end and a top end arranged oppositely, the first magnetic members are provided in plurality, and the plurality of first magnetic members are arranged at intervals in a direction from the top end to the center surface; the second magnetic members are provided in plurality, and the plurality of first magnetic members are arranged at intervals in a direction from the center surface to the bottom end.

[0010] In an embodiment, distances from at least two of the first magnetic members to an axis of the center rod are different; and / or, distances from at least two of the second magnetic members to the axis of the center rod are different.

[0011] In an embodiment, the support column further comprises a base, which is detachably connected to the bottom end of the support body.

[0012] In an embodiment, the base comprises:

[0013] a body portion, which is detachably connected to the bottom end of the support body; and

[0014] an insertion portion, which is protruded from the body portion, the insertion portion is inserted into the embedding slot.

[0015] In an embodiment, the support column further comprises a thermal insulation member, which is clamped between the support body and the base.

[0016] In an embodiment, the support column further comprises third magnetic members close to the top end, the third magnetic members are arranged at intervals in a radial direction of the center rod, and a magnetic field direction of the third magnetic members is parallel to an axis direction of the center rod.

[0017] The present application further provides a backlight module, which comprises a back plate, a light emitting member, a diffusion plate, an optical film, and the support column as described above, the light emitting member is arranged on the back plate, the support column is arranged on the back plate and is arranged at intervals with the light emitting member, the diffusion plate is arranged on a side of the support column away from the back plate and is in abutment with the support column, and the optical film is arranged on a side of the diffusion plate away from the support column.

[0018] The present application further provides a display device, which comprises a display panel and the backlight module as described above, and the display panel is arranged on a side of the optical film away from the support column.

[0019] The technical scheme of the present application sets the support main body as a flexible piece, and the center rod is embedded in the embedding groove of the support main body, so that the support column has good support strength on the one hand, and has certain deformation capacity on the other hand. By winding the coil on the center rod, the magnetic field direction of the magnetic piece embedded in the support main body is set at an acute angle or a right angle with the axis of the center rod, and one end of the magnetic piece is close to the center rod and the other end is away from the center rod, so that the magnetic piece will displace in the case of coil energization, and then drive the flexible support main body to protrude outward or recess inward, and then the light rays will have a diffuse reflection phenomenon when passing through the side wall of the support main body, so as to realize the condition that the light rays passing through the support column form a shadow on the diffusion plate. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0021] Figure 1 It is a structure schematic view of an example coil of the support column of the present application embodiment one when not energized.

[0022] Figure 2 It is a structure schematic view of an example coil of the support column of the present application embodiment one when not energized. Figure 1 It is a partial enlarged view of A in the middle.

[0023] Figure 3 It is a structure schematic view of an example coil of the support column of the present application embodiment one when energized from left to right.

[0024] Figure 4 It is a structure schematic view of an example coil of the support column of the present application embodiment one when energized from right to left.

[0025] Figure 5 It is a structure schematic view of another example coil of the support column of the present application embodiment one when not energized.

[0026] Figure 6 It is a structure schematic view of an example coil of the support column of the present application embodiment one when energized from left to right.

[0027] Figure 7 It is a cross-sectional structure schematic view of an example of the backlight module of the present application embodiment two.

[0028] Figure 8 It is a cross-sectional structure schematic view of another example of the backlight module of the present application embodiment two.

[0029] Figure 9Fig. 3 is a schematic diagram of a cross-sectional structure of an embodiment of the display device of the present application;

[0030] Figure 10 Fig. 4 is a schematic diagram of a cross-sectional structure of another embodiment of the display device of the present application.

[0031] Brief Description of the Drawings

[0032]

[0033]

[0034] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0037] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with “first” and “second” can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize the combination, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0038] Embodiment One:

[0039] The present application provides a support column 100.

[0040] In the embodiments of the present application, please refer to Figures 1 to 4The support column 100 comprises a support body 110, the support body 110 is a flexible piece, the support body 110 is provided with an embedding groove, the support column 100 further comprises a center rod 120, a coil 130 and a magnetic piece 140, the center rod 120 is embedded in the embedding groove; the coil 130 is wound outside the center rod 120 and located in the embedding groove; the magnetic piece 140 is embedded in the support body 110, the magnetic field direction of the magnetic piece 140 is arranged at an acute angle or a right angle with the axis of the center rod 120, and one end of the magnetic piece 140 is close to the center rod 120 and the other end is away from the center rod 120.

[0041] The support column 100 in the application is applied to a backlight module, and is arranged between a back plate 200 and a diffusion plate 400 to support the diffusion plate 400. The back plate 200 is further provided with a light source, and the light emitted by the light source is easy to form a shadow on the diffusion plate 400 when passing through the support column 100. In order to improve the problem, the application embeds a center rod 120 in the embedding groove of the support column 100, so that the support column 100 is formed as a component with higher hardness in the middle and a certain softness on the outside, thereby facilitating the support column 100 to have a certain deformation, which can reduce the scratching degree of the support column 100 on the object supported thereby, and make the support column 100 form diffuse reflection after a certain deformation, thereby compensating for the shadow formed by the support column 100. Specifically, the center rod 120 is wound with a coil 130, and the coil 130 generates a magnetic field parallel to the axis direction of the center rod 120 after being electrified, that is, one end of the center rod 120 is S pole and the other end is N pole. It can be understood that the direction of the magnetic field generated by the coil 130 will change by changing the current direction of the coil 130. Further, the magnetic member 140 is embedded in the support body 110, the magnetic field direction of the magnetic member 140 is arranged at an acute angle or a right angle with the axis of the center rod 120, and one end of the magnetic member 140 is close to the center rod 120 and the other end is away from the center rod 120, so that the magnetic member 140 moves in the support body 110 under the action of the magnetic field generated by the coil 130 due to the interaction of the magnetic field, so that the support body 110 is deformed in protrusion or depression under the movement of the magnetic member 140, thereby enhancing the diffuse reflection phenomenon of the light passing through the support body 110, and weakening the degree of the shadow of the light passing through the support column 100 on the diffusion plate 400. In addition, it can be understood that the size of the current will affect the strength of the magnetic field, and then affect the displacement of the magnetic member 140, so that the deformation amount of the support body 110 in protrusion or depression deformation will also change. In actual application, the size of the current can be changed according to the degree of the shadow in different positions, for example, when the degree of the shadow is large, the size of the current can be increased to make the degree of protrusion or depression of the support body 110 larger, so as to realize better diffuse reflection effect and further improve the shadow condition. Specifically, the magnetic member 140 can be provided with one, two or more, wherein the magnetic field directions of the magnetic members 140 are the same or the magnetic field directions of at least two magnetic members 140 are opposite. The center rod 120 is defined as having a center surface a perpendicular to the axis thereof, and when the magnetic member 140 is provided with at least two, all the magnetic members 140 can be arranged on the same side of the center surface a, or at least two magnetic members 140 are arranged on both sides of the center surface a.It can be understood that when the magnetic member 140 is provided with at least two, and the at least two magnetic members 140 are respectively arranged on both sides of the center surface a, if the magnetic field directions of the magnetic members 140 arranged on both sides of the center surface a are the same, then the plane where the center surface a is located is taken as a boundary surface, the deformation directions of the two parts of the outer surface of the support body 110 relative to both sides of the boundary surface are opposite, that is, the position of the outer surface of the support body 110 on one side of the boundary surface protrudes in the radial direction of the center rod 120 outward, and the position of the outer surface of the support body 110 on the other side of the boundary surface is recessed in the radial direction of the center rod 120 inward. When the magnetic member 140 is provided with at least two, and the at least two magnetic members 140 are respectively arranged on both sides of the center surface a, if the magnetic field directions of the magnetic members 140 arranged on both sides of the center surface a are opposite, then the plane where the center surface a is located is taken as a boundary surface, the deformation directions of the two parts of the outer surface of the support body 110 relative to both sides of the boundary surface are the same, that is, the positions of the outer surface of the support body 110 on both sides of the boundary surface protrude in the radial direction of the center rod 120 outward, or are recessed in the radial direction of the center rod 120 inward. The shape of the end of the magnetic member 140 can be rectangular, arrow-shaped or drop-shaped. When the shape of the end of the magnetic member 140 is different, the shape formed by the movement of the magnetic member 140 under the magnetic field generated by the energized coil 130 is also different, and thus the shape of the end of the magnetic member 140 can be changed according to actual conditions, so that the light can be better reflected to the dark shadow position after being diffusely reflected.

[0042] The support body 110 in the application is a flexible member, which can be made of polyamide or the like. The magnetic member 140 can be a permanent magnet, or the magnetic member 140 can be a magnetic member 140 magnetized by magnetization. When the magnetic member 140 is a magnetized magnetic member 140, its material can be a composite material of cobalt-rare earth iron boron and polyamide, for example, the volume fraction ratio of the two can be 3:17, and of course, the ratio can be flexibly adjusted according to the required hardness and the required magnetic force. Specifically, a double-nozzle device of 3D printing can be used, and a method of magnetizing while 3D printing is adopted.

[0043] The technical scheme of the present application sets the support body 110 as a flexible piece, and the center rod 120 is embedded in the embedding groove of the support body 110. On the one hand, this ensures that the support column 100 has good support strength, and on the other hand, it also enables the support column 100 to have certain deformation capability. By winding the coil 130 on the center rod 120, the magnetic field direction of the magnetic piece 140 embedded in the support body 110 is set at an acute angle or a right angle with the axis of the center rod 120, and one end of the magnetic piece 140 is close to the center rod 120 and the other end is away from the center rod 120. Then, the magnetic piece 140 will displace under the condition that the coil 130 is electrified, thereby driving the flexible support body 110 to protrude outward or sink inward, and then the light rays will undergo a diffuse reflection phenomenon when passing through the side wall of the support body 110, thereby realizing the condition that the light rays passing through the support column 100 form a shadow on the diffusion plate 400.

[0044] Further, please refer to Figures 1 to 4 The magnetic piece 140 includes a first magnetic piece 141 and a second magnetic piece 142, the first magnetic piece 141 is embedded in the support body 110; the second magnetic piece 142 is embedded in the support body 110, the magnetic field directions of the first magnetic piece 141 and the second magnetic piece 142 are both along the radial direction of the center rod 120, and the magnetic field directions of the first magnetic piece 141 and the second magnetic piece 142 are the same or opposite; the support body 110 has a central surface a perpendicular to the axis of the center rod 120, the central surface a passes through the center of the center rod 120, and the first magnetic piece 141 and the second magnetic piece 142 are separately arranged on the two sides of the central surface a.

[0045] It should be noted that, in order to realize the effect that the magnetic fields of the first magnetic piece 141 and the second magnetic piece 142 are opposite, the current direction of the magnetizing coil 130 corresponding to the first magnetic piece 141 is opposite to the current direction of the magnetizing coil 130 corresponding to the second magnetic piece 142 during the printing process, thereby realizing the effect that the magnetic field direction of the first magnetic piece 141 is opposite to the magnetic field direction of the second magnetic piece 142 during the printing process.

[0046] By embedding the first magnetic member 141 and the second magnetic member 142 into the support body 110, the first magnetic member 141 and the second magnetic member 142 are respectively arranged on both sides of the central face a of the central rod 120, and the magnetic field directions of the first magnetic member 141 and the second magnetic member 142 are opposite, so that the magnetic field generated by the energized coil 130 has the effect of mutual attraction or mutual repulsion on the first magnetic member 141 and the second magnetic member 142, thereby causing the first magnetic member 141 and the second magnetic member 142 to move to cause the side wall of the flexible support body 110 to be convex or concave at the positions corresponding to the first magnetic member 141 and the second magnetic member 142, so that the surface of the support body 110 is no longer smooth, facilitating the formation of a diffuse reflection phenomenon to weaken the degree of shadow on the diffusion plate 400 after the light passes through the support column 100.

[0047] The following takes the N pole of the first magnetic member 141 close to the central rod 120, the S pole of the first magnetic member 141 away from the central rod 120, the N pole of the second magnetic member 142 away from the central rod 120, and the S pole of the second magnetic member 142 close to the central rod 120 as an example. When the coil 130 is energized from the left side, the current of the coil 130 presents a right-handed upward circuit, according to Ampere's rule, the coil 130 generates a magnetic field with the N pole above and the S pole below, so that according to the principle of magnetic field repulsion between the same poles and attraction between different poles, the magnetic field generated above the coil 130 has a repelling effect on the first magnetic member 141, and the magnetic field generated below the coil 130 also has a repelling effect on the second magnetic field, and then the first magnetic member 141 and the second magnetic member 142 move away from the central rod 120, so that the surface of the flexible support body 110 is convex at the positions corresponding to each of the first magnetic member 141 and the second magnetic member 142, thereby increasing the diffuse reflection effect of the light to the surface of the support body 110 and weakening the degree of shadow on the diffusion plate 400 after the light passes through the support column 100. When the coil 130 is energized from the right side, the current of the coil 130 presents a left-handed downward circuit, according to Ampere's rule, the coil 130 generates a magnetic field with the S pole above and the N pole below, so that according to the principle of magnetic field repulsion between the same poles and attraction between different poles, the magnetic field generated above the coil 130 has an attracting effect on the first magnetic member 141, and the magnetic field generated below the coil 130 also has an attracting effect on the second magnetic field, and then the first magnetic member 141 and the second magnetic member 142 move towards the central rod 120, so that the surface of the flexible support body 110 is concave at the positions corresponding to each of the first magnetic member 141 and the second magnetic member 142, thereby also increasing the diffuse reflection effect of the light to the surface of the support body 110 and weakening the degree of shadow on the diffusion plate 400 after the light passes through the support column 100.

[0048] It can be understood that the size of the current of the energized coil 130 also affects the strength of the magnetic field, and in turn affects the displacement of the movement of the magnetic member 140, so that the deformation amount of the convex or concave deformation of the support body 110 also changes. Therefore, in actual application, the size of the current can be changed according to the degree of shadow at different positions. For example, when the degree of shadow is large, the degree of convex or concave of the support body 110 can be increased by increasing the current, so as to achieve a better diffuse reflection effect, thereby further improving the shadow condition. In addition, the shape of the end of the magnetic member 140 also affects the shape of the final convex or concave of the support body 110, and in turn affects the final diffuse reflection effect. Specifically, the shape of the end of the magnetic member 140 can be rectangular, arrow-shaped or drop-shaped, and the shape of the end of the magnetic member 140 can be changed according to actual conditions, so that the light can be better reflected to the shadow position after diffuse reflection.

[0049] Of course, in other examples, the first magnetic member 141 and the second magnetic member 142 can also be arranged in a staggered manner along the direction from the top end 111 to the bottom end 112 of the support body 110.

[0050] Further, please refer to Figures 1 to 4 The support body 110 has a bottom end 112 and a top end 111 arranged opposite to each other, the first magnetic member 141 is provided in a plurality, and the plurality of first magnetic members 141 are arranged in a spaced manner along the direction from the top end 111 to the center surface a. The second magnetic member 142 is provided in a plurality, and the plurality of first magnetic members 141 are arranged in a spaced manner along the direction from the center surface a to the bottom end 112.

[0051] By providing a plurality of first magnetic members 141, the plurality of first magnetic members 141 are arranged in a spaced manner along the direction from the top end 111 to the center surface a, so that the side wall of the support body 110 is formed with a plurality of convexes or grooves in a spaced manner along the direction from the top end 111 to the center surface a, so that the side wall of the support body 110 presents a more rough effect, thereby enhancing the diffuse reflection effect. The shapes of the ends of at least two of the plurality of first magnetic members 141 can be different, so that the light can be better reflected to the shadow position after diffuse reflection.

[0052] Similarly, by providing a plurality of second magnetic members 142, the plurality of second magnetic members 142 are arranged in a spaced manner along the direction from the center surface a to the bottom end 112, so that the side wall of the support body 110 is formed with a plurality of convexes or grooves in a spaced manner along the direction from the top end 111 to the center surface a, so that the side wall of the support body 110 presents a more rough effect, thereby enhancing the diffuse reflection effect. The shapes of the ends of at least two of the plurality of second magnetic members 142 can be different, so that the light can be better reflected to the shadow position after diffuse reflection.

[0053] Further, please refer to Figures 1 to 4 , the distance from the at least two first magnetic members 141 to the axis of the center rod 120 is different.

[0054] Based on the above-mentioned support body 110 having the oppositely arranged bottom end 112 and top end 111, and the first magnetic members 141 and the second magnetic members 142 each being provided with a plurality of schemes, in this example, by setting the distance from the at least two first magnetic members 141 to the axis of the center rod 120 to be different, the deformation degree of the side wall of the support body 110 at the positions corresponding to the at least two first magnetic members 141 is different, and then it is convenient for the light to form directional reflection, so as to better compensate the light intensity at the dark shadow, so that the light emission on the whole diffusion plate 400 is more uniform as a whole.

[0055] Further, the distance from the at least two second magnetic members 142 to the axis of the center rod 120 is different.

[0056] By setting the distance from the at least two second magnetic members 142 to the axis of the center rod 120 to be different, the deformation degree of the side wall of the support body 110 at the positions corresponding to the at least two second magnetic members 142 is different, and then it is also convenient for the light to form directional reflection, so as to better compensate the light intensity at the dark shadow, so that the light emission on the whole diffusion plate 400 is more uniform as a whole. Specifically, the support body 110 can be in a cylindrical shape, a prismatic shape, a circular truncated shape, or a prismatic truncated shape.

[0057] Further, please refer to Figure 1 , Figure 3 and Figure 4 , the support column 100 further comprises a base 160, which is detachably connected to the bottom end 112 of the support body 110.

[0058] By setting the base 160, which is detachably connected to the bottom end 112 of the support body 110, on the one hand, a relatively stable support foundation is provided for the support column 100 to stably support the diffusion plate 400, and on the other hand, the heat generated after the coil 130 is energized can be dissipated, so as to avoid the existence of thermal demagnetization. Specifically, the base 160 can be detachably connected to the support body 110 in a buckle connection or screw connection manner.

[0059] In an example, please refer to Figure 1 , Figure 3 and Figure 4The base 160 comprises a main body part 161 and an insertion part 162. The main body part 161 is detachably connected with the bottom end 112 of the support body 110. The insertion part 162 is protruded from the main body part 161 and is inserted into the embedding groove of the support body 110.

[0060] The main body part 161 of the base 160 is detachably connected with the bottom end 112 of the support body 110, so that the main body part 161 of the base 160 has a better supporting effect on the support column 100. Specifically, the support body 110 can comprise a column part and a connecting part. The column part is provided with the embedding groove and has the oppositely arranged bottom end 112 and top end 111. The connecting part is protruded from the periphery of the column part, so as to be connected with the main body part 161 of the base 160. The insertion part 162 is protruded from the main body part 161 of the base 160, so that the base 160 can be pre-positioned before being connected with the support body 110, which has a better limiting and restraining effect on the support body 110, thereby facilitating the subsequent connection between the base 160 and the support body 110.

[0061] Further, please refer to Figure 1 , Figure 3 and Figure 4 , the support column 100 further comprises a heat insulation member 170, which is clamped between the support body 110 and the base 160.

[0062] The heat insulation member 170 is clamped between the support body 110 and the base 160, so that the heat insulation member 170 can insulate heat, thereby avoiding the phenomenon of thermal demagnetization.

[0063] Further, please refer to Figure 5 and Figure 6 , the support column 100 further comprises a plurality of third magnetic members 150 close to the top end 111. The plurality of third magnetic members 150 are arranged along the radial direction of the center rod 120, and the magnetic field direction of the third magnetic member 150 is parallel to the axial direction of the center rod 120.

[0064] By setting the third magnetic member 150 close to the top end 111 of the support body 110, and the magnetic field direction of the third magnetic member 150 is parallel to the axis direction of the center rod 120, so that the third magnetic member 150 and the magnetic field generated by the coil 130 interact, and then realize the effect of making the top end 111 of the support body 110 deform. Specifically, in order to ensure that the support column 100 has a better supporting effect on the diffusion plate 400, the magnetic field generated by the coil 130 after being energized is opposite to the magnetic field direction of the third magnetic member 150, so that the magnetic field generated by the coil 130 after being energized has a repelling effect on the third magnetic member 150, so as to drive the third magnetic member 150 to move away from the center rod 120, so that the top end 111 of the support body 110 corresponding to the position of the third magnetic member 150 is raised upward, and then a better supporting effect can be obtained on the collapsed diffusion plate 400. It should be noted that in order to realize the upward deformation of the top end 111 of the support body 110 corresponding to the position of the third magnetic member 150, after the magnetic field direction of the third magnetic member 150 is determined, only the energization direction of the coil 130 needs to be changed correspondingly so that the magnetic field generated by the coil 130 after being energized is opposite to the magnetic field direction of the third magnetic member 150. For example, when the top of the third magnetic member 150 is S pole and the bottom is N pole, the current of the coil 130 can be right-handed upward current, so that the coil 130 generates a magnetic field with N pole upward and S pole downward, that is, the magnetic field generated by the coil 130 after being energized is opposite to the magnetic field direction of the third magnetic member 150. When the top of the third magnetic member 150 is N pole and the bottom is S pole, the current of the coil 130 can be left-handed left current, so that the coil 130 generates a magnetic field with S pole upward and N pole downward, that is, the magnetic field generated by the coil 130 after being energized is opposite to the magnetic field direction of the third magnetic member 150. By setting a plurality of third magnetic members 150, the plurality of third magnetic members 150 are arranged along the radial direction of the center rod 120, so that the top end 111 of the support body 110 can be deformed at multiple positions, thereby realizing a better supporting effect on the diffusion plate 400.

[0065] Embodiment two:

[0066] The application also provides a backlight module, which will be described in combination with Figure 7 and Figure 8The backlight module comprises a back plate 200, a light emitting piece 300, a diffusion plate 400, an optical film 500 and a support column 100. The specific structure of the support column 100 refers to the above-mentioned embodiments. Since the backlight module adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Among them, the light emitting piece 300 is arranged on the back plate 200, the support column 100 is arranged on the back plate 200 and is arranged in a spaced manner with the light emitting piece 300, the diffusion plate 400 is arranged on the side of the support column 100 away from the back plate 200 and abuts against the support column 100, and the optical film 500 is arranged on the side of the diffusion plate 400 away from the support column 100.

[0067] By arranging the light emitting piece 300 on the back plate 200, the support column 100 on the back plate 200 and in a spaced manner with the light emitting piece 300, and the diffusion plate 400 on the side of the support column 100 away from the back plate 200, the light emitted by the light emitting piece 300 has sufficient light mixing distance through the arrangement of the support column 100, so that the light can be more uniformly emitted to the diffusion plate 400, realizing uniform light output effect. In addition, by arranging the support body 110 of the support piece as a flexible piece and embedding the center rod 120 in the embedding groove of the support body 110, on the one hand, the support column 100 has good support strength, and on the other hand, the support column 100 has certain deformation ability. By winding the coil 130 on the center rod 120, the magnetic field direction of the magnetic piece 140 embedded in the support body 110 is arranged at an acute angle or a right angle with the axis of the center rod 120, and one end of the magnetic piece 140 is close to the center rod 120 and the other end is away from the center rod 120, so that the magnetic piece 140 will displace under the condition of power supply of the coil 130, and then drive the flexible support body 110 to protrude outward or sink inward, and then the light will occur diffuse reflection phenomenon when passing through the side wall of the support body 110, thereby realizing the condition that the light forms a shadow on the diffusion plate 400 after passing through the support column 100.

[0068] Embodiment three:

[0069] The application also provides a display device, which will be described in combination with Figure 9 and Figure 10 The display device comprises a display panel 600 and a backlight module. The specific structure of the backlight module refers to the above-mentioned embodiments. Since the backlight module adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Among them, the display panel 600 is arranged on the side of the optical film 500 away from the support column 100.

[0070] By arranging the display panel 600 on the side of the optical film sheet 500 away from the support column 100, the light emitted from the backlight module to the optical film sheet 500 can directly reach the display panel 600, so that the display panel 600 can display a picture for a user to view.

[0071] The above merely describes the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like, made under the inventive concept of the present application, using the content of the present application specification and drawings, is included in the patent protection scope of the present application.

Claims

1. A support column comprising a support body, characterized by, The support body is a flexible member, and the support body is provided with an embedding groove. A center rod is embedded in the embedding groove. A coil is wound around the center rod and located in the embedding groove. A magnetic member is embedded in the support body, and a magnetic field direction of the magnetic member is arranged at an acute angle or a right angle with respect to an axis of the center rod, one end of the magnetic member is close to the center rod, and the other end of the magnetic member is away from the center rod, the magnetic member moves in the support body under the action of a magnetic field generated by the coil, so that the support body is deformed in a convex or concave manner under the action of the movement of the magnetic member. The magnetic member includes a first magnetic member and a second magnetic member, the first magnetic member is embedded in the support body, the second magnetic member is embedded in the support body, the magnetic field directions of the first magnetic member and the second magnetic member are both along a radial direction of the center rod, and the magnetic field directions of the first magnetic member and the second magnetic member are the same or opposite, the support body has a center surface perpendicular to the axis of the center rod, the center surface passes through the center of the center rod, and the first magnetic member and the second magnetic member are arranged on two sides of the center surface.

2. The support column of claim 1, wherein, The support body has a bottom end and a top end arranged oppositely, the first magnetic member is provided in plurality, and the plurality of first magnetic members are distributed at intervals in a direction from the top end to the center surface. The second magnetic member is provided in plurality, and the plurality of first magnetic members are distributed at intervals in a direction from the center surface to the bottom end.

3. The support column of claim 2, wherein, The distance of at least two first magnetic members to the axis of the center rod is different. And / or, the distance of at least two second magnetic members to the axis of the center rod is different.

4. A support column as claimed in claim 2 or 3, wherein, The support column further includes a base, and the base is detachably connected to the bottom end of the support body.

5. The support column of claim 4, wherein, The base includes: a body part detachably connected to the bottom end of the support body; and an insertion part protruding from the body part, the embedding groove penetrates through the bottom end of the support body, and the insertion part is inserted into the embedding groove.

6. The support column of claim 4, wherein, The support column further includes a heat insulation member, and the heat insulation member is clamped between the support body and the base.

7. The support column of claim 6, wherein, The support column further includes a plurality of third magnetic members close to the top end, the plurality of third magnetic members are arranged at intervals in a radial direction of the center rod, and a magnetic field direction of the third magnetic member is parallel to the axis direction of the center rod.

8. A backlight module, characterized in that, The support column includes a back plate, a light emitting member, a diffusion plate, an optical film, and any one of claims 1 to 7, the light emitting member is arranged on the back plate, the support column is arranged on the back plate and is arranged at intervals with the light emitting member, the diffusion plate is arranged on a side of the support column away from the back plate and abuts against the support column, and the optical film is arranged on a side of the diffusion plate away from the support column.

9. A display device, characterized by The support column includes a display panel and the backlight module of claim 8, and the display panel is arranged on a side of the optical film away from the support column.

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