Display module and display device

Abstract

The display module comprises a light guide plate, the light guide plate comprises a first light guide part, the face, close to a second supporting part, of the first light guide part is a flat and straight face, the face, away from the second supporting part, of the first light guide part is an inclined face, and the thickness of the first light guide part is gradually reduced in the direction away from a blocking part. The second light guide part is arranged at the end, with the smaller thickness, of the first light guide part. The thickness of the light guide plate is integrally reduced in the direction close to the display panel, so that the second sub-supporting part can be closer to the light guide plate relative to the first sub-supporting part, the circuit board is arranged on the side, away from the light guide plate, of the second sub-supporting part, the distance between the circuit board and the display panel can be reduced, and then the thickness of the display module is reduced. The utility model further provides a display device comprising the display module.

Description

Technical Field

[0001] The utility model relates to the technical field of displays, and more specifically, to a display module and a display device. Background Art

[0002] Due to the low manufacturing cost, low power consumption during use, and long service life of liquid crystal display modules, they are widely used in many electronic products.

[0003] In order to reduce the border of the liquid crystal display module, the support member usually connected to the display panel is folded to the back of the light guide plate, and the circuit board is disposed on the side of the support member away from the light guide plate, which will cause the display module to be relatively thick.

[0004] It should be noted that the information of the utility model in the above background art is only used to strengthen the understanding of the background of the present utility model, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0005] The purpose of the present utility model is to overcome the problem that the circuit board is disposed on the side of the support member away from the light guide plate, resulting in a relatively thick display module, and to provide a display module and a display device.

[0006] According to one aspect of the present utility model, a display module is provided. The display module includes a support member, a light guide plate, a circuit board, and a display panel. The support member includes a first support portion, a blocking portion, and a second support portion. The first support portion and the second support portion are spaced apart. The blocking portion is connected between the first support portion and the second support portion. The edge of the second support portion is retracted relative to the edge of the first support portion, exposing a part of the first support portion. The light guide plate includes a first light guide portion and a second light guide portion. The first light guide portion is disposed on the side close to the blocking portion. The surface of the first light guide portion close to the second support portion is a flat surface, and the surface of the first light guide portion away from the second support portion is an inclined surface. The thickness of the first light guide portion gradually decreases in the direction away from the blocking portion. The second light guide portion is disposed at the end where the thickness of the first light guide portion is smaller. At least part of the first light guide portion is disposed between the first support portion and the second support portion. The circuit board is disposed on the side of the first support portion away from the light guide plate. The display panel is connected to the side of the second support portion away from the light guide plate. The first support portion includes a first sub-support portion, a connecting portion, and a second sub-support portion. The connecting portion is connected between the first sub-support portion and the second sub-support portion. The second sub-support portion is closer to the light guide plate than the first sub-support portion. The circuit board is disposed on the side of the second sub-support portion away from the light guide plate.

[0007] In an embodiment of the present utility model, a step difference is formed between the end close to the blocking portion and the end away from the blocking portion on the surface of the first light guide portion close to the first support portion, and the ratio of the step difference to the thickness of the second light guide portion is less than or equal to 12.5%.

[0008] In an embodiment of the present utility model, the orthographic projection of the first light guide portion on the first support portion is located within the orthographic projection of the second support portion on the first support portion.

[0009] In an embodiment of the present utility model, the display module further includes a reflective sheet. The reflective sheet is disposed between the first support portion and the second light guide portion. The orthographic projection of the side of the reflective sheet close to the blocking portion on the first support portion overlaps with the orthographic projection of the side of the second light guide portion close to the blocking portion on the first support portion.

[0010] In an embodiment of the present utility model, the distance between the side of the first sub - support portion away from the blocking portion and the side of the first light guide portion away from the blocking portion is less than 0.5 mm.

[0011] In an embodiment of the present utility model, the side surface of the circuit board is in mutual contact with the connecting portion.

[0012] In an embodiment of the present utility model, the display panel includes an array substrate, a color filter substrate, and a first flexible circuit board. The array substrate is disposed on the side of the light guide plate away from the first support portion. The color filter substrate is disposed on the side of the array substrate away from the first support portion, and a part of the array substrate is exposed as a bonding area. One end of the first flexible circuit board is connected to the bonding area, and the other end is connected to the circuit board.

[0013] In an embodiment of the present utility model, the display module further includes a first polarizer, a second polarizer, and a light - collecting film. The light - collecting film is disposed on the side of the light guide plate away from the first support portion. The first polarizer is disposed on the side of the light - collecting film away from the first support portion. The second polarizer is disposed on the side of the color filter substrate away from the first support portion.

[0014] In an embodiment of the present utility model, the display module further includes a light source. The light source includes a second flexible circuit board and a light - emitting element. The second flexible circuit board is disposed on the side of the first sub - support portion close to the light guide plate. The light - emitting element is electrically connected to the side of the second flexible circuit board away from the first sub - support portion, and the light - emitting element is in contact with the side of the first light guide portion close to the blocking portion.

[0015] According to another aspect of the present utility model, there is provided a display device including the display module according to one aspect of the present utility model.

[0016] The display module of the present utility model includes a light guide plate. The light guide plate includes a first light guide portion. One side of the first light guide portion close to the second support portion is a flat surface, and the side of the first light guide portion away from the second support portion is an inclined surface. The thickness of the first light guide portion gradually decreases in the direction away from the blocking portion. The second light guide portion is provided at the end where the thickness of the first light guide portion is smaller. The thickness of the light guide plate as a whole decreases in the direction close to the display panel. Therefore, the second sub-support portion can be closer to the light guide plate relative to the first sub-support portion. The circuit board is arranged on the side of the second sub-support portion away from the light guide plate, which can reduce the distance between the circuit board and the display panel, and further reduce the thickness of the display module.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present utility model. Brief Description of the Drawings

[0018] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present utility model, and are used together with the specification to explain the principles of the present utility model. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic cross-sectional view of the display module according to the embodiment of the present utility model when both the side of the first light guide portion close to the first support portion and the side close to the second support portion are flat surfaces.

[0020] Figure 2 It is a schematic cross-sectional view of the display module according to the embodiment of the present utility model when the side of the first light guide portion close to the second support portion is a flat surface, the side of the first light guide portion away from the second support portion is an inclined surface, and the thickness of the first light guide portion gradually decreases in the direction away from the blocking portion.

[0021] Figure 3 It is a schematic diagram of the effect when the backlight light is incident from the light guide plate to the display panel when the two opposite sides of the light guide plate according to the embodiment of the present utility model are parallel flat surfaces.

[0022] Figure 4 It is a schematic diagram of the effect when the backlight light is incident from the light guide plate to the display panel when the side of the first light guide portion close to the display panel is set as a flat surface and the side of the first light guide portion away from the display panel gradually inclines towards the display panel according to the embodiment of the present utility model.

[0023] Figure 5One side of the first light guide part far from the display panel in the embodiment of the present utility model is set as a flat surface. When one side of the first light guide part close to the display panel gradually inclines away from the display panel, it is a schematic diagram of the effect of backlight rays incident from the light guide plate to the display panel.

[0024] Figure 6 When using a light guide plate of 0.4T - 0.45T, the embodiment of the present utility model relates to Figure 4 and Figure 5 the simulated optical path distribution diagram of the display module in

[0025] Figure 7 When using a light guide plate of 0.4T - 0.52T, the embodiment of the present utility model relates to Figure 4 and Figure 5 the simulated optical path distribution diagram of the display module in

[0026] Explanation of reference numerals:

[0027] 1. Support member, 11. First support part, 111. First sub - support part, 112. Connection part, 113. Second sub - support part, 12. Blocking part, 13. Second support part, 2. Light guide plate, 21. First light guide part, 22. Second light guide part, 3. Display panel, 31. Array substrate, 32. Color filter substrate, 33. First flexible circuit board, 4. Circuit board, 5. Reflective sheet, 6. Light source, 61. Second flexible circuit board, 62. Light - emitting element, 7. First polarizer, 8. Second polarizer, 9. Light - collecting film, 14. Adhesive part. Detailed implementation manners

[0028] Now, example embodiments will be described more comprehensively with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; on the contrary, these embodiments are provided so that the present utility model will be complete and comprehensive, and the concept of the example embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted. In addition, the drawings are only schematic diagrams of the present utility model and are not necessarily drawn to scale.

[0029] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the icon to another component, these terms are used in this specification only for convenience, for example, according to the direction of the example in the drawings. It can be understood that if the device of the icon is turned upside down, the component described as "upper" will become the component "lower". When a certain structure is "on" another structure, it may mean that a certain structure is integrally formed on another structure, or that a certain structure is "directly" disposed on another structure, or that a certain structure is "indirectly" disposed on another structure through another structure.

[0030] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and refer to the possible existence of additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", "third", etc. are used only as labels and are not a limitation on the quantity of their objects.

[0031] As Figure 1 shown, the display module includes a support member 1, a light guide plate 2, a display panel 3 and a circuit board 4. The support member 1 includes a first support portion 11, a blocking portion 12 and a second support portion 13. The first support portion 11 and the second support portion 13 are spaced apart. The blocking portion 12 is connected between the first support portion 11 and the second support portion 13. The light guide plate 2 is disposed between the first support portion 11 and the second support portion 13. Both the surface of the first light guide portion 21 close to the first support portion 11 and the surface close to the second support portion 13 are flat surfaces. The display panel 3 is disposed on the side of the second support portion 13 away from the light guide plate 2. An adhesive portion 14 is provided between the display panel 3 and the second support portion 13, and the adhesive portion 14 is connected to the display panel 3 and the second support portion 13 respectively. The circuit board 4 is disposed on the side of the first support portion 11 away from the light guide plate 2. The circuit board 4 and the electronic components provided on the side of the circuit board 4 away from the first support portion 11 will cause the display module to be relatively thick in thickness.

[0032] Based on this, an embodiment of the present utility model provides a display module. As Figure 2As shown in the figure, the display module includes a support member 1, a light guide plate 2, a circuit board 4, and a display panel 3. The support member 1 includes a first support portion 11, a blocking portion 12, and a second support portion 13. The first support portion 11 and the second support portion 13 are spaced apart. The blocking portion 12 is connected between the first support portion 11 and the second support portion 13. The edge of the second support portion 13 is retracted relative to the edge of the first support portion 11, exposing a part of the first support portion 11. The light guide plate 2 includes a first light guide portion 21 and a second light guide portion 22. The first light guide portion 21 is disposed on a side close to the blocking portion 12. A surface of the first light guide portion 21 close to the second support portion 13 is a flat surface, and a surface of the first light guide portion 21 away from the second support portion 13 is an inclined surface. The thickness of the first light guide portion 21 gradually decreases in a direction away from the blocking portion 12. The second light guide portion 22 is disposed at an end with a smaller thickness of the first light guide portion 21. At least a part of the first light guide portion 21 is disposed between the first support portion 11 and the second support portion 13. The circuit board 4 is disposed on a side of the first support portion 11 away from the light guide plate 2. The display panel 3 is connected to a side of the second support portion 13 away from the light guide plate 2. The first support portion 11 includes a first sub-support portion 111, a connecting portion 112, and a second sub-support portion 113. The connecting portion 112 is connected between the first sub-support portion 111 and the second sub-support portion 113. The second sub-support portion 113 is closer to the light guide plate 2 than the first sub-support portion 111. The circuit board 4 is disposed on a side of the second sub-support portion 113 away from the light guide plate 2.

[0033] A surface of the first light guide portion 21 close to the second support portion 13 is a flat surface, and a surface of the first light guide portion 21 away from the second support portion 13 is an inclined surface. The thickness of the first light guide portion 21 gradually decreases in a direction away from the blocking portion 12. The second light guide portion 22 is disposed at an end with a smaller thickness of the first light guide portion 21. The thickness of the light guide plate 2 as a whole decreases in a direction close to the display panel 3. Therefore, the second sub-support portion 113 can be closer to the light guide plate 2 than the first sub-support portion 111. By disposing the circuit board 4 on a side of the second sub-support portion 113 away from the light guide plate 2, the distance between the circuit board 4 and the display panel 3 can be reduced, and thus the thickness of the display module can be reduced.

[0034] The display module involved in the embodiment of the present invention will be described in detail below in conjunction with specific embodiments.

[0035] As Figure 2As shown, the display device may include a support member 1 and a light guide plate 2. The support member 1 includes a first support portion 11, a blocking portion 12, and a second support portion 13. The first support portion 11 and the second support portion 13 are spaced apart. The blocking portion 12 is connected between the first support portion 11 and the second support portion 13. The edge of the second support portion 13 is retracted relative to the edge of the first support portion 11, exposing a part of the first support portion 11. The light guide plate 2 includes a first light guide portion 21 and a second light guide portion 22. The first light guide portion 21 is disposed on a side close to the blocking portion 12. The second light guide portion 22 is disposed at an end of the first light guide portion 21 away from the blocking portion 12. The first light guide portion 21 and a part of the second light guide portion 22 are disposed between the first support portion 11 and the second support portion 13.

[0036] One surface of the first light guide portion 21 close to the second support portion 13 is a flat surface, and one surface of the first light guide portion 21 away from the second support portion 13 is an inclined surface. The thickness of the first light guide portion 21 gradually decreases in a direction away from the blocking portion 12. The second light guide portion 22 is disposed at an end of the first light guide portion 21 with a smaller thickness. Both opposite surfaces of the second light guide portion 22 are flat surfaces. Among them, one surface of the second light guide portion 22 close to the second support portion 13 and one surface of the first light guide portion 21 close to the second support portion 13 are located in the same plane. It can be understood that there is a height difference between one end of the inclined surface of the first light guide portion 21 close to the blocking portion 12 and the other end away from the blocking portion 12, that is, there is a height difference between one end of the inclined surface of the first light guide portion 21 close to the blocking portion 12 and one surface of the second light guide portion 22 close to the first support portion 11.

[0037] The first support portion 11 includes a first sub - support portion 111, a connecting portion 112, and a second sub - support portion 113. The connecting portion 112 is connected between the first sub - support portion 111 and the second sub - support portion 113. The second sub - support portion 113 is closer to the second light guide portion 22 than the first sub - support portion 111. The display device may further include a circuit board 4. The circuit board 4 is disposed on a side of the second sub - support portion 113 away from the light guide plate 2. Figure 2 The circuit board 4 in Figure 1 is translated by a distance h in a direction closer to the light guide plate 2 compared with the circuit board 4 in

[0038] The display device may further include a display panel 3, an adhesive portion 14, and a first flexible circuit board 33. The display panel 3 includes an array substrate 31, a color filter substrate 32, and a first flexible circuit board 33. The array substrate 31 is disposed on a side of the light guide plate 2 away from the first support portion 11. The color filter substrate 32 is disposed on a side of the array substrate 31 away from the first support portion 11, and a part of the array substrate 31 is exposed as a bonding area. One end of the first flexible circuit board 33 is connected to the bonding area, and the other end is connected to the circuit board 4. The adhesive portion 14 is bonded between the array substrate 31 and a side of the second support portion 13 away from the light guide plate 2.

[0039] The display module may further include a first polarizer 7, a second polarizer 8, and a light collecting film 9. The light collecting film 9 may be provided in multiple layers. The multiple layers of the light collecting film 9 are disposed between the light guide plate 2 and the array substrate 31. The first polarizer 7 is disposed between the light collecting film 9 and the array substrate 31. The second polarizer 8 is disposed on a side of the color filter substrate 32 away from the first support portion 11.

[0040] The display module may further include a reflector 5 and a light source 6. The light source 6 includes a second flexible circuit board 61 and a light emitting element 62. The second flexible circuit board 61 is disposed on a side of the first sub-support portion 111 close to the light guide plate 2. The light emitting element 62 is electrically connected to a side of the second flexible circuit board 61 away from the first sub-support portion 111, and the light emitting element 62 is attached to a side of the first light guide portion 21 close to the blocking portion 12. The reflector 5 is disposed between the first support portion 11 and the second light guide portion 22. The light emitted by the light source 6 is homogenized by the light guide plate 2. When the light in the light guide plate 2 is incident on the reflector 5, the reflector will reflect the light in a direction close to the display panel 3.

[0041] As Figure 3 shown, the two opposite sides of the light guide plate 2 are flat and straight surfaces parallel to each other, and the thickness of the light guide plate 2 is 0.45T. As Figure 4 shown, one side of the first light guide portion 21 close to the display panel 3 is set as a flat and straight surface. Along the direction away from the blocking portion 12, the side of the first light guide portion 21 away from the display panel 3 gradually inclines towards the display panel 3, and the thickness of the light guide plate 2 is 0.4T - 0.45T. As Figure 5 shown, one side of the first light guide portion 21 away from the display panel 3 is set as a flat and straight surface. Along the direction away from the blocking portion 12, the side of the first light guide portion 21 close to the display panel 3 gradually inclines away from the display panel 3, and the thickness of the light guide plate 2 is 0.4T - 0.45T.

[0042] When the backlight light is incident from the light guide plate 2 to the display panel 3, Figure 3 the light mixing effect of the display module in Figure 4 is relatively good, and there is no problem of upward light leakage. Figure 5The light coupling effect of the display module is poor, and a large amount of light escapes upward in the M area, causing hot spot light leakage problems. Figure 4 and Figure 5 The light guide plates in both can reduce the thickness of the display module, but using the light guide plate 2 in Figure 4 can effectively avoid the hot spot light leakage problem of the display module. In Figure 4 the thickness of the display module can be thinned by 0.1T.

[0043] It should be noted that for the display module in both the figures, the thickness of the first light guide portion 21 on the side close to the blocking portion 12 must be greater than the height of the light emitting element 62 to avoid poor light mixing problems. The light emitting element 62 can be a light emitting diode (LED).

[0044] When using Figure 4 and Figure 5 in the display module, the greater the step difference formed between the end close to the blocking portion 12 and the end far from the blocking portion 12 on the surface of the first light guide portion 21 close to the first support portion 11, the greater the optical attenuation generated, and the smaller the overall optical brightness of the display module. In the case of using the display module as shown in Figure 4 , when the thickness of the light guide plate 2 is 0.4T - 0.45T, the average brightness of the entire surface of the display module is 5492nits, and when the thickness of the light guide plate 2 is 0.4T - 0.52T, the average brightness of the entire surface of the display module is 5205nits. In the case of using the display module as shown in Figure 5 , when the thickness of the light guide plate 2 is 0.4T - 0.45T, the average brightness of the entire surface of the display module is 5493nits, and when the thickness of the light guide plate 2 is 0.4T - 0.52T, the average brightness of the entire surface of the display module is 5225nits. Whether it is Figure 4 or Figure 5 in the display module, the brightness of the display module using the light guide plate 2 with a thickness of 0.4T - 0.52T is attenuated by about 5% compared to the brightness of the display module using the light guide plate 2 with a thickness of 0.4T - 0.45T.

[0045] Figure 6 Figure Figure 4 and Figure 5 are the simulated light path distribution diagrams of the display modules in Figure 7 Figure Figure 4 and Figure 5 when using the light guide plate 2 with a thickness of 0.4T - 0.52T. As shown in Figure 6 and Figure 7As shown, it can be seen from the simulated optical path distribution diagram that, compared with the display module using the light guide plate 2 with a thickness of 0.4T - 0.45T, the overall light energy distribution of the display module using the light guide plate 2 with a thickness of 0.4T - 0.52T becomes uneven. Therefore, as the step difference increases, the optical distribution uniformity becomes worse. When using the light guide plate 2 with a thickness of 0.4T - 0.45T, the optical distribution uniformity is 83% - 84%. When using the light guide plate 2 with a thickness of 0.4T - 0.52T, the optical distribution uniformity drops to 75 - 77%, resulting in poor optical uniformity.

[0046] Thus, when the step difference between one end of the first light guide part 21 close to the blocking part 12 and the end far from the blocking part 12 is 0.4T - 0.45T, the optical brightness and optical uniformity of the display module are better. That is, the step difference should be less than or equal to 0.05T, and the ratio of the step difference to the thickness of the second light guide part 22 should be less than or equal to 12.5%. If this step difference exceeds 12.5%, there is a risk that the brightness attenuation and optical uniformity will exceed the qualified range.

[0047] As Figure 2 shown, the dimension of the first light guide part 21 in the first direction is A, and the dimension of the second light guide part 22 in the first direction is B. The sum of A and B is the dimension of the light guide plate 2 in the first direction, that is, the orthographic projection of the side of the reflective sheet 5 close to the blocking part 12 on the first support part 11 overlaps with the orthographic projection of the side of the second light guide part 22 close to the blocking part 12 on the first support part 11.

[0048] When A is larger, when the orthographic projection of the edge of the reflective sheet 5 on the first support part 11 is located between the two sides of the orthographic projection of the inclined surface of the first light guide part 21 on the first support part 11 in the first direction, it is easy to scratch the inclined surface of the second light guide part 22. When A is smaller, the orthographic projection of the edge of the reflective sheet 5 on the first support part 11 overlaps with the orthographic projection of the second light guide part 22 on the first support part 11, and the light path will be incident on the second sub - support part 113. Since the reflectivity of the second sub - support part 113 is different from that of the reflective sheet 5, it will cause problems such as shadow or light leakage in the display module.

[0049] The orthographic projection of the first light guide part 21 on the first support part 11 is located within the orthographic projection of the second support part 13 on the first support part 11, that is, the edge of the first light guide part 21 far from the blocking part 12 is closer to the blocking part 12 than the edge of the second support part 13 far from the blocking part 12. This avoids light leakage problems in the display module.

[0050] The distance between one side of the first sub-supporting part 111 away from the blocking part 12 and one side of the first light guide part 21 away from the blocking part 12 is B, and the difference between B and A is 0.5T, that is, the distance between one side of the first sub-supporting part 111 away from the blocking part 12 and one side of the first light guide part 21 away from the blocking part 12 is less than 0.5T. When B is too small, the connecting part 112 will push against the first light guide part 21, causing the first light guide part 21 to be scratched. When B is too large, the blocking part 12 will cause the side of the reflective sheet 5 close to the support 1 to be scratched. It should be noted that the thickness of T can be 1 mm.

[0051] It should be noted that the first direction is Figure 2 the x direction shown in

[0052] The embodiment of the present utility model also provides a display device, which may include the display module of any one of the above embodiments of the present utility model. The specific structure and beneficial effects of the display device may also be referred to the display module. Therefore, details are not described herein again.

[0053] It should be noted that, in addition to the display module, the display device further includes other necessary components and compositions, such as a housing, a power cord, etc. Those skilled in the art can make corresponding supplements according to the specific usage requirements of the display device, which will not be elaborated herein.

[0054] When the display panel has the above-mentioned structure, the display device may be a traditional electronic device, such as a mobile phone, a computer, a television, and a video camera recorder, or may be a new wearable device, such as a virtual reality device and an augmented reality device, which will not be listed one by one herein.

[0055] This application aims to cover any variations, uses, or adaptations of the present utility model, which follow the general principles of the present utility model and include the common general knowledge or conventional technical means in the technical field of the present utility model that are not disclosed by the present utility model. The description and the embodiments are only regarded as exemplary, and the true scope and spirit of the present utility model are pointed out by the claims.

[0056] It should be understood that the present utility model is not limited to the exact structures that have been described and shown in the drawings above, and various modifications and changes can be made without departing from its scope. The scope of the present utility model is only defined by the appended claims.

Claims

1. A display module, characterized in that: include: A support member, comprising a first support portion, a blocking portion, and a second support portion, wherein the first support portion is spaced apart from the second support portion, the blocking portion is connected between the first support portion and the second support portion, and an edge of the second support portion is retracted relative to an edge of the first support portion, exposing a portion of the first support portion; A light guide plate, comprising a first light guide portion and a second light guide portion, wherein the first light guide portion is arranged at a side close to the blocking portion, a side of the first light guide portion close to the second supporting portion is a flat surface, a side of the first light guide portion away from the second supporting portion is an inclined surface, a thickness of the first light guide portion gradually decreases in a direction away from the blocking portion, the second light guide portion is arranged at an end of the first light guide portion with a smaller thickness, and at least a portion of the first light guide portion is arranged between the first supporting portion and the second supporting portion; A display panel connected to a side of the second supporting portion away from the light guide plate; A circuit board is arranged on a side of the first supporting portion away from the light guide plate; The first supporting portion includes a first sub-supporting portion, a connecting portion and a second sub-supporting portion, the connecting portion is connected between the first sub-supporting portion and the second sub-supporting portion, the second sub-supporting portion is closer to the second light guide portion relative to the first sub-supporting portion, and the circuit board is arranged on a side of the second sub-supporting portion away from the light guide plate.

2. The display module according to claim 1, characterized in that: A surface of the first light guide portion close to the first supporting portion forms a step difference between an end close to the blocking portion and an end away from the blocking portion, and a ratio of the step difference to a thickness of the second light guide portion is less than or equal to 12.5%.

3. The display module according to claim 1, characterized in that: The orthographic projection of the first light guide portion on the first support portion is located within the orthographic projection of the second support portion on the first support portion.

4. The display module according to claim 1, characterized in that: The display module also includes a reflective sheet, which is arranged between the first supporting portion and the second light guiding portion, and the orthographic projection of a side of the reflective sheet close to the blocking portion on the first supporting portion overlaps with the orthographic projection of a side of the second light guiding portion close to the blocking portion on the first supporting portion.

5. The display module according to claim 1, characterized in that: A distance between a side of the first sub-support portion away from the blocking portion and a side of the first light guide portion away from the blocking portion is less than 0.5 mm.

6. The display module according to claim 1, characterized in that: The side surface of the circuit board and the connecting portion are in contact with each other.

7. The display module according to claim 1, characterized in that: The display panel includes an array substrate, a color film substrate and a first flexible circuit board. The array substrate is arranged on a side of the light guide plate away from the first supporting portion. The color film substrate is arranged on a side of the array substrate away from the first supporting portion, and a portion of the array substrate is exposed as a binding area. One end of the first flexible circuit board is connected to the binding area, and the other end is connected to the circuit board.

8. The display module according to claim 7, characterized in that: The display module also includes a first polarizer, a second polarizer and a light-collecting film. The light-collecting film is arranged on a side of the light guide plate away from the first supporting portion, the first polarizer is arranged on a side of the light-collecting film away from the first supporting portion, and the second polarizer is arranged on a side of the color film substrate away from the first supporting portion.

9. The display module according to claim 1, characterized in that: The display module also includes a light source, which includes a second flexible circuit board and a light-emitting element. The second flexible circuit board is arranged on a side of the first sub-support portion close to the light guide plate, and the light-emitting element is electrically connected to a side of the second flexible circuit board away from the first sub-support portion, and the light-emitting element is in contact with a side of the first light guide portion close to the blocking portion.

10. A display device, characterized in that: A display module comprising any one of claims 1 to 9.

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