Supporting column, backlight module and display device

Abstract

The present disclosure provides a support column comprising: a base portion; the column body part is provided with a top and a bottom which are opposite in the axial direction of the column body part, the bottom is connected to the base part, the column body part is in an arc bent shape, and the top gradually deviates from a first straight line relative to the bottom, so that a supporting area with a fillet is formed on the top; the first straight line penetrates through the axis of the bottom end face and is perpendicular to the base part. The embodiment of the utility model further provides a backlight module and a display device. According to the supporting column, the backlight module and the display device provided by the embodiment of the invention, the product quality can be improved, and poor pictures are reduced.

Description

Technical Field

[0001] The utility model relates to the field of display technology, in particular to a supporting column, a backlight module and a display device. Background Art

[0002] The backlight design of LCD monitors is mainly based on direct-lit backlight modules and edge-lit backlight modules. As the development trend of LCD monitors is toward large size, high image quality, and thinness, how to improve the production efficiency and quality of LCD monitors so that they can provide high image quality while reducing production costs is one of the most important research topics in the current LCD monitor field.

[0003] For direct-type backlight modules, the diffuser is usually supported by support pins, and the number and position of the support pins are set according to the size of the display panel and the backlight module. The support pins are installed between the backlight source and the diffuser to ensure that the diffuser does not sink due to gravity or deform due to force, causing the light cavity height to change and not meet the design requirements, thus causing problems such as uneven brightness and light shadow. However, in the related art, direct-type backlight modules still have problems such as uneven images, which affect product quality. Utility Model Content

[0004] The embodiments of the present disclosure provide a support column, a backlight module and a display device, which can improve the poor image quality of display products and enhance product quality.

[0005] The technical solutions provided by the embodiments of the present disclosure are as follows:

[0006] In a first aspect, an embodiment of the present disclosure provides a support column, comprising:

[0007] the base portion; and

[0008] A cylindrical portion, wherein the cylindrical portion has a top and a bottom relative to each other along its own axial direction, the bottom is connected to the base portion, the cylindrical portion is curved in an arc shape, and the top gradually deviates from a first straight line relative to the bottom so that the top forms a support area with rounded corners, wherein the first straight line passes through the axis of the bottom end face and is perpendicular to the base portion.

[0009] Exemplarily, along the direction from the bottom to the top, the radial dimension of the column part gradually decreases.

[0010] Exemplarily, the arc radius r corresponding to the rounded corner of the support area is less than or equal to 0.2 mm.

[0011] Exemplarily, the column portion is made of an elastically deformable material so that the bending curvature of the column portion can be changed by force.

[0012] Exemplarily, the column part is constructed to have a hollow cavity extending along its own axial direction, and the column part is made of a light-transmitting material.

[0013] Exemplarily, the minimum value of the bending angle of the column part is greater than 0° and the maximum value is less than 90°, and the bending angle is the angle between the tangent line at any point in the arc-shaped axis of the column part and the first straight line.

[0014] Exemplarily, the support column further includes:

[0015] An adjusting portion, connected to the column portion, for adjusting a height of the column portion in the first straight line extending direction.

[0016] Exemplarily, the adjustment part includes:

[0017] A pin, wherein the column portion is provided with a radial hole at a position close to the bottom, the axial direction of the pin is arranged along the radial direction of the column portion and penetrates the radial hole, and the pin is configured to apply a force to the column portion to change the curvature of the column portion when performing a first action;

[0018] An operable member is connected to one end of the pin member extending out of the radial hole and is used for driving the column part to perform the first action.

[0019] Exemplarily, the first action includes a rotation action, the pin shaft is rotatably installed in the radial hole, and when the pin shaft performs the rotation action, it can slide relative to the radial hole along its own axial direction to change the length of the pin shaft extending into the radial hole; the pin shaft includes at least two diameter-changing sections arranged along the axial direction, and the maximum diameters of different diameter-changing sections are different; wherein,

[0020] The radial hole is configured such that the inner diameter thereof changes as the diameter-changing section it contacts changes, and the column portion is configured such that the curvature thereof changes as the inner diameter thereof changes.

[0021] Exemplarily, the operable member is provided with a scale mark for marking the rotation angle of the pin member.

[0022] Exemplarily, the pin member and the operable member are both made of light-transmitting material.

[0023] In a second aspect, an embodiment of the present disclosure provides a backlight module, comprising:

[0024] Optical film;

[0025] back panel; and

[0026] As described above, the support column is arranged on a side of the optical film close to the back plate, and the support area is in contact with the optical film to support the optical film.

[0027] In a third aspect, an embodiment of the present disclosure provides a display device, comprising:

[0028] display panel; and

[0029] In the backlight module as described above, the backlight light source and the optical film are arranged on the backlight side of the display panel, and in the light emitting direction of the display panel, the optical film is located between the backlight light source and the display panel.

[0030] The beneficial effects brought by the embodiments of the present disclosure are as follows:

[0031] In the support column, backlight module and display device provided by the embodiments of the present disclosure, the support column includes: a base part and a column part, the column part has a top and a bottom relative to each other along its own axis, the bottom is connected to the base part, the column part is in an arc shape, the top gradually deviates from the first straight line relative to the bottom, so that the top forms a support area with rounded corners, wherein the first straight line passes through the axis of the bottom end face and is perpendicular to the base part. When the support column is applied to the backlight module, the support area of ​​the support column close to the top position contacts and supports the optical film. In this way, since the column part is constructed to be in an arc shape, the support area of ​​the support column used to contact the optical film has a certain rounded corner. Compared with the solution in the related art that the top of the support column is designed as a tip to support the optical film, it can avoid the phenomenon that the tip hits the optical film and causes bright spots to appear on the screen, and the screen can be made more uniform to improve the quality of the display product. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 One of the structural schematic diagrams of the support column provided in some embodiments of the present disclosure is shown;

[0033] Figure 2 A second schematic diagram showing the structure of a support column provided in some embodiments of the present disclosure;

[0034] Figure 3 A third structural schematic diagram showing a support column provided in some embodiments of the present disclosure;

[0035] Figure 4 A schematic diagram showing the structure of a backlight module provided in some embodiments of the present disclosure;

[0036] Figure 5 A fourth structural schematic diagram showing a support column provided in some embodiments of the present disclosure;

[0037] Figure 6 A schematic diagram showing the structure of an adjustment part in a support column provided in some embodiments of the present disclosure;

[0038] Figure 7 A schematic diagram showing the structure of a backlight module for performing optical simulation provided in the present disclosure;

[0039] Figure 8 express Figure 7 A top view of the backlight module shown;

[0040] Fig. 9 express Figure 7 The optical simulation diagram of the backlight module is shown. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0042] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one", "one" or "the" do not indicate quantity restrictions, but indicate that there is at least one. Similar words such as "include" or "comprise" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] Before describing in detail the support column, backlight module and display device provided by the embodiments of the present disclosure, the following description is made of the related technologies:

[0044] In the related technologies, the backlight design of LCD is mainly based on direct-lit backlight module and edge-lit backlight module. As the large size, high image quality and thinness of LCD are the development trends, how to improve the production efficiency and quality of LCD so that LCD can provide high image quality while reducing production costs is one of the most important research topics in the field of LCD.

[0045] For direct-type backlight modules, the diffuser is usually supported by support pins, and the number and position of the support pins are set according to the size of the display panel and the backlight module. The support pins are installed between the backlight source and the optical film (such as the diffuser) to ensure that the diffuser will not sink due to gravity or deform due to force, resulting in a change in the height of the optical cavity that does not meet the design requirements, thereby causing problems such as uneven brightness such as lamp shadows.

[0046] However, the conventional support column will also affect the path of light in the optical cavity, causing bright spots to appear at the support column position when the display panel displays high-brightness images, thereby affecting the quality of the displayed images.

[0047] The applicant of the present disclosure has found through research that this is because the top of the traditional support column used to contact the optical film is designed to be a sharp tip, and the height of the support column is fixed, which leads to the risk that the tip of the support column may hit the optical film or optical glue when the backlight module is subjected to a drop test, etc., thereby causing bright spots to appear on the screen and uneven pictures. In addition, different products require different support column heights, and different molds need to be made to produce support columns of different heights, which results in high mold opening costs.

[0048] In order to solve the above problems, the embodiments of the present disclosure provide a support column, a backlight module and a display device, which can improve the poor image quality of display products and enhance product quality.

[0049] like Figure 1 As shown, the support column 10 provided in the embodiment of the present disclosure includes a base portion 100 and a column portion 200, wherein the column portion 200 has a top A and a bottom B relative to each other along its own axis, and the bottom B is connected to the base portion 100, and the column portion 200 is curved in an arc shape, and the top A gradually deviates from the first straight line c relative to the bottom B, so that the top A is formed into a support area A1 with rounded corners, wherein the first straight line c passes through the axis of the end face of the bottom B and is perpendicular to the base portion 100.

[0050] In the above scheme, if Figure 1 and Figure 4As shown, when the support column 10 is applied to a backlight module, the base portion 100 of the support column 10 can be supported on the back panel or light panel 20 of the backlight module, and the support area A1 of the support column 10 close to the top A position can contact and support the optical film 30. Since the column portion 200 is constructed to be curved in an arc shape, the support area A1 of the support column 10 used to contact the optical film 30 has a certain rounded corner. Compared with the solution in the related art that the support column 10 supports the optical film 30 through the tip, it can avoid the tip hitting the optical film 30 or the optical glue 40 to cause bright spots on the screen, so that the picture can be more uniform, thereby improving the quality of the display product.

[0051] In some exemplary embodiments, Figure 1 As shown, the radial dimension of the column part 200 gradually decreases along the direction from the bottom B to the top A. In this way, the column part 200 gradually converges from the bottom B to the top A and is curved in an arc shape, which is more conducive to forming a support area A1 with a smaller fillet radius at the top A to reduce the contact area between the support column 10 and the optical film 30.

[0052] Specifically, in some exemplary embodiments, the column part 200 can be formed by injection molding or the like, and is configured to gradually reduce its radial dimension from the bottom B to the top A, making it easier to form a support area A1 with a smaller rounded corner. It is understandable that the molding process and specific structure of the column part 200 are not limited thereto.

[0053] Furthermore, in some exemplary embodiments, Figure 1 As shown, the radius r of the rounded corner of the support area A1 can be less than or equal to 0.2 mm. The above solution can ensure that the contact position between the column part 200 and the optical film 30 is a rounded contact rather than a sharp contact, and can also ensure that the contact area between the two is not too large, thereby avoiding optical adverse effects caused by the large contact area between the two.

[0054] Of course, it is understandable that, in practical applications, according to the actual requirements of different products, the arc radius corresponding to the rounded corner of the support area A1 is not limited thereto.

[0055] Furthermore, in some exemplary embodiments, Figure 1 As shown, the base portion 100 and the column portion 200 may be an integrally formed structure. Exemplarily, the support column may be an injection molded part formed by an injection molding process. However, this is not limited thereto. In other embodiments, the base portion 100 and the column portion 200 may also be connected together by other means.

[0056] In addition, in the related art, for different display products, the required support column has different support heights, so different molds need to be made to make support columns of different heights, resulting in high mold opening costs. In order to solve the above problem, in some exemplary embodiments of the present disclosure, the column part 200 is made of an elastically deformable material so that the curvature of the column part 200 can be changed by force.

[0057] By adopting the above scheme, since the column part 200 is in an arc shape, it can be elastically deformed, and its bending curvature will change accordingly under different forces. When the bending curvature changes, the height along the first straight line c will change accordingly. Therefore, it can be applied to more scenarios, reduce mold opening costs, and reduce costs.

[0058] Figure 2 Shown are schematic diagrams of the support column 10 in different bending curvatures, wherein the column portion 200 shown by the solid line is a schematic diagram in one bending curvature state, and the column portion 200 shown by the dotted line is a schematic diagram in another bending curvature state.

[0059] Furthermore, in some exemplary embodiments, Figure 1 As shown, the column part 200 may be constructed as a solid column, and the column part 200 and the base part 100 may be integrally formed. Both the column part 200 and the base part 100 may have elastic deformation properties.

[0060] In other exemplary embodiments, Figure 3 As shown, the column part 200 can also be constructed to have a hollow cavity 210 extending along its own axial direction, and the column part 200 is made of a light-transmitting material. In this way, the column part 200 is designed to be a hollow and transparent structure, which can further prevent the column part 200 from affecting the light of the backlight source and causing the phenomenon of light shadow, etc.; at the same time, it is also more conducive to achieving the effect of adjustable bending curvature.

[0061] In some exemplary embodiments, the base portion 100 may also be made of a light-transmitting material. For example, the column portion 200 and the base portion 100 may be made of any material that meets the requirements of elastic deformation and light-transmitting performance, such as polycarbonate (PC) and acrylic.

[0062] Furthermore, in some exemplary embodiments, Figure 1 As shown, the minimum value of the bending angle α of the column part 200 is greater than 0°, and the maximum value is less than 90°. The bending angle α refers to the angle between the tangent line at any point in the arc-shaped axis of the column part 200 and the first straight line c. Figure 1The angle between the tangent line at point b and the first straight line c. The bending angle of the cylindrical part 200 at any position of the arc-shaped axis from the bottom to the top can be between 0 and 90 degrees, and when the cylindrical part 200 undergoes elastic deformation, its bending angle also changes between 0 and 90 degrees to present a bending shape change with different bending curvatures.

[0063] In some exemplary embodiments, Figure 5 As shown, the support column 10 further includes an adjusting portion 300 , which is connected to the column portion 200 and is used to adjust the height of the column portion 200 in the extending direction of the first straight line c.

[0064] By adopting the above solution, the height of the column part 200 can be adjusted by setting the adjustment part 300 to meet different product requirements. In this way, by using the adjustment part 300 to pre-adjust the height of the column part 200, compared with directly using the optical film 30 to apply a force to the column part 200 to change the bending shape (i.e., height) of the column part 200, the reaction force applied by the column part 200 to the optical film 30 due to elastic deformation is reduced, thereby avoiding adverse effects on the optical film 30.

[0065] In some exemplary embodiments, Figure 5 and Figure 6 As shown, the adjusting part 300 includes a pin shaft member 310 and an operable member 320, wherein the column part 200 is provided with a radial hole 220 at a position close to the bottom B, the axial direction of the pin shaft member 310 is arranged along the radial direction of the column part 200, and is penetrated in the radial hole 220, and the pin shaft member 310 is configured to apply a force to the column part 200 that changes the bending curvature of the column part 200 when performing a first action; the operable member 320 is connected to one end of the pin shaft member 310 extending out of the radial hole 220, and is used for driving the column part 200 to perform the first action.

[0066] In the above scheme, the operable member 320 can be used for manual operation or electric operation. By operating the operable member 320, a force can be applied to the pin member 310 connected to the operable member 320 to drive the pin member 310 to perform a first action. The first action may include rotation, sliding and other movements. The pin member 310 is configured to apply a force to the column part 200 when performing the above-mentioned first action, thereby changing the bending curvature of the column part 200. Therefore, based on the above scheme, the bending curvature of the column part 200 can be adjusted by using the adjustment part 300, thereby adjusting the height of the column part 200.

[0067] It should be noted that there are many ways to implement the first action of the column part 200 to apply a force to the column part 200, which are not listed here one by one. For example, the first action may include but is not limited to rotation and sliding actions.

[0068] Only Figure 5 and Figure 6 As shown in the figure, in some exemplary embodiments, the first action includes a rotation action; the pin member 310 is rotatably installed in the radial hole 220, for example, the pin member 310 can be connected to the radial hole 220 in a threaded manner. In addition, when the pin member 310 performs the rotation action, it can slide relative to the radial hole 220 along its own axial direction to change the length of the pin member 310 extending into the radial hole 220.

[0069] The pin shaft 310 includes at least two diameter-reducing sections 311 arranged along the axial direction, and different diameter-reducing sections 311 have different maximum diameters. Thus, when the pin shaft 310 slides to different positions relative to the radial hole 220 along its own axial direction, the diameter-reducing section 311 extending into the radial hole 220 will be adjusted accordingly.

[0070] Exemplarily, at least two of the variable diameter sections 311 may include a thick diameter section 311A ​​and a thin diameter section 311B, and there is a step-like change between the thick diameter section 311A ​​and the thin diameter section 311B; or, at least two variable diameter sections 311 may also be realized by sequentially arranging raised blocks of different heights along the axial direction on the circumferential surface of the pin shaft 310.

[0071] The radial hole 220 is configured such that its inner diameter changes with the contacted variable diameter section 311. That is to say, since the column portion 200 can be made of an elastically deformable material, when the variable diameter sections 311 of different diameters extend into the radial hole 220, the radial hole 220 will change accordingly. For example, if the diameter of the variable diameter section 311 extending into the radial hole 220 is larger, the radial hole 220 will elastically deform and the inner diameter will increase accordingly; if the diameter of the variable diameter section 311 extending into the radial hole 220 is smaller, the radial hole 220 will elastically deform and the inner diameter will decrease accordingly.

[0072] The column portion 200 is configured such that the curvature of the curvature changes with the change of the inner diameter of the radial hole 220, and the column portion 200 is configured such that the curvature of the curvature changes with the change of the inner diameter of the radial hole 220. That is, since the column portion 200 has elastic deformation characteristics, when the inner diameter of the radial hole 220 changes, the radial hole 220 will squeeze the column portion 200, so that the column portion 200 will be deformed accordingly, thereby changing the curvature of the column portion 200, and achieving the purpose of adjusting the height of the column portion 200.

[0073] In some embodiments, the operable member 320 is provided with a scale mark for marking the rotation angle of the pin member 310. Figure 6 As shown, the operable member 320 is constructed in a hemispherical shape, including a spherical curved surface 321 and a plane 322, wherein the spherical curved surface 321 is connected to the pin member 310, and a plurality of scale marks 323 are arranged along the circumferential direction on the plane 322. Of course, it can be understood that the specific structure of the operable member 320 is not limited thereto.

[0074] In addition, in some exemplary embodiments, the height adjustment method of the support column 10 on the first straight line c can be adjusted within a range of 0-4mm, 5-8mm, 0-15mm or 8-15mm. For example, when the height of the support column 10 on the first straight line c is adjusted within 0-4mm, the scale mark may include four scale marks 323 evenly spaced along the plane 322; when the height of the support column 10 on the first straight line c is adjusted within 5-8mm, the scale mark may include four scale marks 323 evenly spaced along the plane 322; when the height of the support column 10 on the first straight line c is adjusted within 8-15mm, the scale mark may include eight scale marks evenly spaced along the plane 322; when the height of the support column 10 on the first straight line c is adjusted within 0-15mm, the scale mark may include 16 scale marks evenly spaced along the plane 322. The above are only examples, and are not limited to this in actual applications.

[0075] In addition, in some embodiments, the pin member 310 and the operable member 320 may be made of a light-transmitting material to avoid adverse effects on the image. For example, any material that meets the requirements of elastic deformation and light transmission performance, such as polycarbonate (PC) and acrylic, may be selected.

[0076] In some embodiments, the pin member 310 and the operable member 320 may be integrally formed, or may be integrally formed with the base portion 100 and the column portion 200 by injection molding or other processes. However, the specific molding method is not limited thereto.

[0077] In summary, the support column 10 provided in some embodiments of the present disclosure designs the column part 200 to be curved in an arc shape to form a support area with rounded corners, thereby preventing the support column 10 from hitting the optical film or optical glue in situations such as a vibration drop test, so as to improve the reliability of the backlight module; in addition, by setting the adjustment part 300, support columns of different heights can be adjusted, thereby saving the cost of opening a mold for the support column.

[0078] In addition, the second aspect, such as Figure 4 As shown, the embodiment of the present disclosure further provides a backlight module, which includes: an optical film 30, a back plate, and a support column 10 provided in the embodiment of the present disclosure, wherein the support column 10 is disposed on a side of the optical film 30 close to the back plate, and the support area A1 contacts the optical film 30 to support the optical film 30. Obviously, the backlight module provided in the embodiment of the present disclosure also has the beneficial effects brought by the support column 10 provided in the embodiment of the present disclosure, which will not be described in detail here.

[0079] In some exemplary embodiments, the optical film 30 may include but is not limited to a diffuser. Figure 4 As shown, the backlight module also includes a backlight light source, for example, the backlight light source includes a lamp board 20, the lamp board 20 is located between the backboard and the optical film 30, and the base portion 100 is supported on the lamp board 20, and the support area A1 of the top A of the column portion 200 is supported on a side of the optical film 30 close to the lamp board 20. A plurality of light sources (such as LEDs) 21 are arranged at intervals on the lamp board 20, and the support column 10 is located between adjacent light sources 21.

[0080] See also Figure 8 As shown, in some embodiments, some of the support columns 10 in the backlight module adopt traditional support columns 10', and some of the support columns 10 adopt the support columns 10 provided by the embodiment of the present disclosure, and optical simulation is performed, and the obtained optical simulation diagram is as shown in FIG. Fig. 9 shown.

[0081] from Figure 8 and Fig. 9 It can be seen that, with the central light source 21 between the traditional support part and the support column 10 provided in the present application as the coordinate origin, the light shadow produced by the traditional support column 10 is located at the center of the four adjacent light sources 21, and the light shadow of the support column 10 provided in the embodiment of the present disclosure is located to the side of the center of the four adjacent light sources 21, but the light shadows of the two are basically consistent. It can be seen that the use of the support column 10 provided in the embodiment of the present disclosure will not cause adverse effects on the display product screen.

[0082] In addition, in a third aspect, the embodiment of the present disclosure provides a display device, which includes: a display panel; and a backlight module provided by the embodiment of the present disclosure, wherein the backlight source and the optical film 30 are arranged on the backlight side of the display panel, and in the light emitting direction of the display panel, the optical film 30 is located between the backlight source and the display panel. Obviously, the display device provided by the embodiment of the present disclosure also has the beneficial effects brought by the backlight module provided by the embodiment of the present disclosure, which will not be repeated here.

[0083] There are a few points to note:

[0084] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design.

[0085] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions is exaggerated or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or there may be intermediate elements.

[0086] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0087] The above are only specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure shall be based on the protection scope of the claims.

Claims

1. A support column, characterized in that: include: Base part; and A cylindrical portion, wherein the cylindrical portion has a top and a bottom relative to each other along its own axial direction, the bottom is connected to the base portion, the cylindrical portion is curved in an arc shape, and the top gradually deviates from a first straight line relative to the bottom so that the top forms a support area with rounded corners, wherein the first straight line passes through the axis of the bottom end face and is perpendicular to the base portion.

2. The support column according to claim 1, characterized in that: Along the direction pointing from the bottom to the top, the radial dimension of the column part gradually decreases.

3. The support column according to claim 1, characterized in that: The arc radius r corresponding to the rounded corner of the support area is less than or equal to 0.2 mm.

4. The support column according to claim 1, characterized in that: The column part is made of an elastically deformable material so that the bending curvature of the column part can be changed by force.

5. The support column according to claim 1, characterized in that: The column part is constructed to have a hollow cavity extending along its own axial direction, and the column part is made of a light-transmitting material.

6. The support column according to claim 1, characterized in that: The minimum value of the bending angle of the column part is greater than 0°, and the maximum value is less than 90°. The bending angle is the angle between the tangent line at any point in the arc-shaped axis of the column part and the first straight line.

7. The support column according to claim 1, characterized in that: The support column also includes: An adjusting portion, connected to the column portion, for adjusting a height of the column portion in the first straight line extending direction.

8. The support column according to claim 7, characterized in that: The adjustment part includes: A pin, wherein the column portion is provided with a radial hole at a position close to the bottom, the axial direction of the pin is arranged along the radial direction of the column portion and penetrates the radial hole, and the pin is configured to apply a force to the column portion to change the curvature of the column portion when performing a first action; An operable member is connected to one end of the pin member extending out of the radial hole and is used for driving the column part to perform the first action.

9. The support column according to claim 8, characterized in that: The first action includes a rotation action, the pin shaft member is rotatably installed in the radial hole, and when the pin shaft member performs the rotation action, it can slide relative to the radial hole along its own axial direction to change the length of the pin shaft member extending into the radial hole; the pin shaft member includes at least two diameter-changing sections arranged along the axial direction, and the maximum diameters of different diameter-changing sections are different; wherein, The radial hole is configured such that the inner diameter thereof changes as the diameter-changing section it contacts changes, and the column portion is configured such that the curvature thereof changes as the inner diameter thereof changes.

10. The support column according to claim 8, characterized in that: The operable part is provided with a scale mark for marking the rotation angle of the pin shaft part.

11. The support column according to claim 8, characterized in that: The pin shaft member and the operable member are both made of light-transmitting materials.

12. A backlight module, characterized in that: include: Optical film; Backlight source; and The support column according to any one of claims 1 to 11, wherein the support column is arranged on a side of the optical film close to the backlight source, and the support area contacts the optical film to support the optical film.

13. A display device, characterized in that: include: Display panel; and The backlight module as described in claim 12, wherein the backlight light source and the optical film are arranged on the backlight side of the display panel, and in the light emitting direction of the display panel, the optical film is located between the backlight light source and the display panel.

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