Display module and display device

Abstract

The application provides a display module and a display device. The display module comprises a display screen body. In a first direction, a clamping area is located on at least one side of a central area. In use, a pulling force is applied to the clamping area, the direction of the pulling force is parallel to the first direction, and the direction of the pulling force is away from the central area. In a second direction, the display screen body has oppositely arranged first and second surfaces, and the first direction intersects the second direction. The display screen body comprises at least one first recess. The first recess is arranged on the first surface. In the second direction, the width of the display screen body corresponding to the area where the first recess is located is smaller than the maximum width of the display screen body corresponding to the central area. In addition, the display screen body comprises at least one second recess. The second recess is arranged on the second surface. In the second direction, the width of the display screen body corresponding to the area where the second recess is located is smaller than the maximum width of the display screen body corresponding to the central area.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to display modules and display devices. Background Technology

[0002] A display module is a device with display functionality. Current display modules, such as those based on Organic Light Emitting Diode (OLED) and Light Emitting Diode (LED) technologies, offer advantages like high image quality, low power consumption, thin design, and wide applicability, making them the mainstream choice for display modules in various consumer electronics products such as mobile phones, televisions, laptops, and desktop computers. OLED display modules are suitable for manufacturing flexible OLED display modules; for example, flexible OLED display modules can be rollable OLED display modules. However, due to limitations in related technologies, current rollable OLED display modules still cannot meet the demands. Summary of the Invention

[0003] In view of this, embodiments of this application provide a display module and a display device.

[0004] The first aspect of this application provides a display module, including a display body, the display body including a clamping area and a central area. In a first direction, the clamping area is located on at least one side of the central area. In use, a pulling force is applied to the clamping area, the direction of the pulling force is parallel to the first direction and the direction of the pulling force is away from the central area. In a second direction, the display body has a first surface and a second surface disposed opposite to each other, the first direction intersecting the second direction.

[0005] The display body includes at least one first recess, which is disposed on a first surface. In a second direction, the width of the display body corresponding to the area where the first recess is located is less than the maximum width of the display body corresponding to the central area. And / or, the display body includes at least one second recess, which is disposed on a second surface. In a second direction, the width of the display body corresponding to the area where the second recess is located is less than the maximum width of the display body corresponding to the central area.

[0006] In one embodiment, in the second direction, the depth of the first recess is greater than or equal to 1 mm and less than or equal to 10 mm;

[0007] And / or, in the second direction, the depth of the second recess is greater than or equal to 1 mm and less than or equal to 10 mm.

[0008] In one embodiment, the shape of the first recess includes an arc shape, the radius of which is greater than or equal to 10 mm and less than or equal to 50 mm.

[0009] And / or, the shape of the second recess includes an arc shape, the radius of which is greater than or equal to 10 mm and less than or equal to 50 mm.

[0010] In one embodiment, the clamping region includes a first clamping region and a second clamping region, which are located at opposite ends of the central region;

[0011] The number of first recesses is one. In the first direction, the first recess includes a first end and a second end that are disposed opposite to each other. The first end coincides with the edge of the first clamping region near the central region, and / or the second end coincides with the edge of the second clamping region near the central region.

[0012] And / or, the first recess includes a first arcuate portion, a first straight portion and a second arcuate portion, the first arcuate portion and the second arcuate portion are located on opposite sides of the first straight portion, the first arcuate portion extends in a second direction away from the first surface and toward the second surface, and the second arcuate portion extends in a second direction away from the first surface and toward the second surface.

[0013] And / or, the number of second recesses is one, and in the first direction, the second recess includes a third end and a fourth end disposed opposite to each other, the third end coincides with the edge of the first clamping region near the central region, and / or, the fourth end coincides with the edge of the second clamping region near the central region;

[0014] And / or, the second recess includes a third arcuate portion, a second straight portion and a fourth arcuate portion, the third arcuate portion and the fourth arcuate portion are located on opposite sides of the second straight portion, the third arcuate portion extends in a second direction away from the second surface and toward the first surface, and the fourth arcuate portion extends in a second direction away from the second surface and toward the first surface.

[0015] In one embodiment, there are multiple first recesses, and the multiple first recesses are spaced apart.

[0016] And / or, in the first direction, the widths of the plurality of first recesses are the same or different;

[0017] And / or, the number of second recesses is multiple, and the multiple second recesses are spaced apart;

[0018] And / or, in the first direction, the widths of the plurality of second recesses are the same or different;

[0019] And / or, the first recess and the second recess are symmetrically arranged, with the axis of symmetry parallel to the first direction and the axis of symmetry being the centerline of the display screen body.

[0020] In one embodiment, the display module further includes:

[0021] A rotating component, which is connected to the clamping area;

[0022] And / or, the clamping area includes a first clamping area and a second clamping area, the first clamping area and the second clamping area being located at opposite ends of the central area;

[0023] The rotating component is connected to the first clamping area;

[0024] And / or, in the second direction, the width of the first clamping area is less than or equal to the width of the rotating component.

[0025] In one embodiment, the display module further includes: a driving component for driving the rotating component to rotate;

[0026] And / or, the drive components include servo motors.

[0027] In one embodiment, the display module further includes a rigid component located in the second clamping area and on the backlight side of the display body.

[0028] In one embodiment, the display module includes a display area and a non-display area, the non-display area surrounding at least a portion of the display area;

[0029] The first recess is located in the non-display area, and / or the second recess is located in the non-display area;

[0030] And / or, in the second direction, the display area has a first edge and a second edge disposed opposite to each other, the first edge being adjacent to a first surface and the second edge being adjacent to a second surface;

[0031] The display screen body further includes a third recessed portion, which is disposed at the first edge and is correspondingly disposed to the first recessed portion; and / or, the display screen body further includes a fourth recessed portion, which is disposed at the second edge and is correspondingly disposed to the second recessed portion.

[0032] A second aspect of this application provides a display device including the aforementioned display module.

[0033] According to the display module provided in the embodiments of this application, in the second direction, the width of the display body corresponding to the area where the first recess is located is less than the maximum width of the display body corresponding to the central area, or the width of the display body corresponding to the area where the second recess is located is less than the maximum width of the display body corresponding to the central area. When in use, after applying a pulling force parallel to the first direction to the clamping area, the wrinkling problem of the display body during the stretching or rolling process can be effectively improved, the user experience of the display module can be enhanced, and the rolling life of the display module can be increased. Attached Figure Description

[0034] Figure 1 This is a stress distribution diagram of a display screen body under tension in the prior art.

[0035] Figure 2 This is a top view of the display screen body in one embodiment of this application.

[0036] Figure 3 This is a top view of the display screen structure in another embodiment of this application.

[0037] Figure 4 This is a top view of the display screen structure in another embodiment of this application.

[0038] Figure 5 This is a top view of the display screen structure in another embodiment of this application.

[0039] Figure 6 This is a stress distribution diagram of a display screen body subjected to tension in one embodiment of this application.

[0040] Figure 7 This is a stress distribution diagram of the display screen body under tension in another embodiment of this application.

[0041] Figure 8 This is a top view of the display screen structure in another embodiment of this application.

[0042] Figure 9 This is a schematic diagram of the cross-sectional structure of the display module in one embodiment of this application.

[0043] Figure 10 This is a top view of the display screen structure in another embodiment of this application.

[0044] Figure 11 This is a top view of the display screen structure in another embodiment of this application. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods and means well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0047] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0048] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0049] As a novel form of flexible display, the rollable design has been widely researched and developed in the display industry. Rollable screens can not only expand the display area of ​​OLED display modules but also significantly reduce the size of end products. In existing technologies, during the rolling process, the display body is subjected to tensile forces on both sides in the length direction (first direction x), and wrinkles easily appear in the width direction (second direction y). Long-term wrinkles affect both user experience and the lifespan of the screen. Furthermore, in existing technologies, the length of the OLED display body in the width direction is uniform; after stretching, at least part of the width of the display body narrows in this direction. Figure 1 The stress distribution diagram of the display screen body after being stretched is shown. Region 1 has compressive stress in the width direction, which is the main reason for wrinkles. The area with compressive stress is relatively large and is more likely to produce wrinkles.

[0050] In view of the above, the first aspect of this application provides a display module, referring to... Figure 2 , Figure 3 or Figure 4 The schematic diagram of the top view of the display screen body shown shows that the display screen body 100 includes a clamping area S1 and a central area S2.

[0051] Optionally, in the first direction x, the clamping area S1 is located on at least one side of the central area S2. During use, a pulling force F is applied to the clamping area S1, the direction of the pulling force F being parallel to the first direction x and the direction of the pulling force F being away from the central area S2. In the second direction y, the display screen body 100 has a first surface 110 and a second surface 120 disposed opposite to each other, and the first direction x intersects the second direction y. For example, the first direction x is perpendicular to each other with respect to the second direction y.

[0052] Optionally, the display body 100 includes at least one first recess 130, the first recess 130 is disposed on the first surface 110, and in the second direction y, the width W1 of the display body 100 corresponding to the area where the first recess 130 is located is less than the maximum width W2 of the display body 100 corresponding to the central area S2.

[0053] For example, the depth of the first recess 130 gradually decreases in the direction away from the display body 100. It should be noted that, in the second direction y, the width W1 of the display body 100 corresponding to the area where the first recess 130 is located refers to the minimum width of the display body 100 corresponding to the area where the first recess 130 is located in the second direction y.

[0054] It is understandable that, in the second direction y, the maximum width W2 of the display screen body 100 corresponding to the central region S2 refers to the maximum width W2 of the display screen body 100 corresponding to the central region S2 in the second direction y, excluding the region containing the first recess 130.

[0055] For example, in the second direction y, the maximum width W2 of the display body 100 corresponding to the central region S2 is equal to the width W3 of the clamping region S1.

[0056] For example, the first recess 130 facilitates increasing the edge length of the display body 100. When a tensile force F in the first direction x is applied to the display body 100, it helps to alleviate compressive stress in the second direction, thereby reducing the risk of wrinkles appearing on the display body 100. It is understood that when a tensile force F in the first direction x is applied to the display body 100, the edge of the display body 100, after being stretched, tends to contract under the action of surface tension or molecular forces, thus generating compressive stress. When the edge length of the display body 100 increases, under the action of the tensile force F, the display body 100 is more easily elongated, and compressive stress is less likely to occur or is less intense.

[0057] Optionally, the display body 100 includes at least one second recess 140, which is disposed on the second surface 120. In the second direction y, the width W4 of the display body 100 corresponding to the area where the second recess 140 is located is less than the maximum width W2 of the display body 100 corresponding to the central area S2.

[0058] For example, the depth of the second recess 140 gradually decreases in the direction away from the display body 100. It should be noted that the width W4 of the display body 100 corresponding to the area where the second recess 140 is located in the second direction y refers to the minimum width of the display body 100 corresponding to the area where the second recess 140 is located in the second direction y.

[0059] It is understandable that, in the second direction y, the maximum width W2 of the display screen body 100 corresponding to the central region S2 refers to the maximum width W2 of the display screen body 100 corresponding to the central region S2 in the second direction y, excluding the region containing the second recess 140.

[0060] According to the display module provided in the embodiments of this application, in the second direction y, the width W1 of the display body 100 corresponding to the area where the first recess 130 is located is less than the maximum width W2 of the display body 100 corresponding to the central area S2, or the width W4 of the display body 100 corresponding to the area where the second recess 140 is located is less than the maximum width W2 of the display body 100 corresponding to the central area S2. When in use, after applying a pulling force parallel to the first direction x to the clamping area S1, the wrinkling problem of the display body 100 during the stretching or rolling process can be effectively improved, the user experience of the display body 100 can be improved, and the rolling life of the display body 100 can be increased.

[0061] In one embodiment, the clamping region S1 includes a first clamping region S11 and a second clamping region S12, with the first clamping region S11 and the second clamping region S12 located at opposite ends of the central region S2.

[0062] Optionally, refer to Figure 4 The number of first recesses 130 is one. In the first direction x, the first recess 130 includes a first end 131 and a second end 132 disposed opposite to each other. The first end 131 can be located at any position on the first surface 110, and the second end 132 can be located at any position on the first surface 110.

[0063] For example, the first end 131 coincides with the edge of the first clamping region S11 near the central region S2, and / or the second end 132 coincides with the edge of the second clamping region S12 near the central region S2. It is understood that the starting position of the first recess 130 coinciding with the edge of the first clamping region S11 near the central region S2 and / or the edge of the second clamping region S12 near the central region S2 effectively alleviates the compressive stress in the central region S2.

[0064] In one embodiment, the first recess 130 is arc-shaped, with a radius greater than or equal to 10 mm and less than or equal to 50 mm, such as 10 mm, 20 mm, 30 mm, 40 mm, or 50 mm. Therefore, when the first recess 130 is arc-shaped, there are almost no inflection points or turning points, and the surface of the first recess 130 is relatively smooth. When the display screen body 100 is stretched, the stress on the first recess 130 is more uniform, and the effect of dispersing compressive stress is excellent. Since the radius of the arc corresponding to the first recess 130 is within the above range, the surface length of the first recess 130 can be effectively increased, which is more conducive to avoiding the occurrence of wrinkles.

[0065] For example, refer to Figure 5The first recess 130 includes a first arcuate portion 133, a first straight portion 134, and a second arcuate portion 135. The first arcuate portion 133 and the second arcuate portion 135 are located on opposite sides of the first straight portion 134. The first arcuate portion 133 extends along a second direction y, away from the first surface 110 and toward the second surface 120, and the second arcuate portion 135 extends along the second direction y, away from the first surface 110 and toward the second surface 120. Therefore, the provision of the first recess 130 helps to alleviate the compressive stress in the central region S2, and also allows for a more suitable depth of the first recess 130.

[0066] In one embodiment, the depth of the first recess 130 in the second direction y is greater than or equal to 1 mm and less than or equal to 10 mm, for example, it can be 1 mm, 2 mm, 4 mm, 6 mm, 8 mm, or 10 mm. Therefore, the depth of the first recess 130 is appropriate, which not only relieves compressive stress but also allows the display screen to have a larger display area. It should be noted that the depth of the first recess 130 refers to the maximum distance between any two points on the first surface 110 in the second direction y.

[0067] For example, the width of the first recess 130 gradually decreases in the first direction x along a direction away from the first surface 110.

[0068] For example, the shape of the first recess 130 may include an arc, a square, a rectangle, a triangle, etc. As long as it meets the requirements, those skilled in the art can make a flexible choice according to the actual situation.

[0069] For example, refer to Figure 6 and Figure 7 The diagram shown illustrates the stress distribution of the display screen body under tension. Figure 6 The depth of the first recess 130 is less than Figure 7 As can be seen from the depth of the first recess 130, the area of ​​the display screen body 100 subjected to compressive stress decreases as the depth of the first recess 130 increases. For example... Figure 6 The area 2 of the display screen body 100 subjected to compressive stress is greater than Figure 7 The area 3 of the display screen body 100 subjected to compressive stress. However, in order to make the display screen body have a larger display area, the radius of the arc corresponding to the first recess 130 is better within the range of 10mm or greater than or equal to 50mm.

[0070] In one embodiment, refer to Figure 8The number of first recesses 130 is multiple, and the multiple first recesses 130 are arranged at intervals. For example, the first recesses 130 are arranged at intervals in the first direction x. Therefore, providing multiple first recesses 130 is beneficial to increasing the surface length of the first recesses 130, and is more conducive to avoiding the occurrence of wrinkles. Moreover, the arrangement of multiple first recesses 130 is beneficial to increasing the display area of ​​the display screen body, so that the display screen body can have a better display effect.

[0071] Optionally, in the first direction x, the widths of the plurality of first recesses 130 may be the same or different. It should be noted that, in the first direction x, the width of the first recess 130 refers to the maximum distance between any two points in the first recess 130 along the first direction x. For example, in the first direction x, the width of the first recess 130 refers to the maximum distance between any two points in the first recess 130 along the first surface.

[0072] Optionally, refer to Figure 4 and Figure 5 The number of second recesses 140 is one. In the first direction x, the second recess 140 includes a third end 141 and a fourth end 142 disposed opposite to each other. The third end 141 can be located at any position on the second surface 120, and the fourth end 142 can be located at any position on the second surface 120.

[0073] For example, the third end 141 coincides with the edge of the first clamping region S11 near the central region S2, and / or the fourth end 142 coincides with the edge of the second clamping region S12 near the central region S2. It is understood that the starting position of the second recess 140 coinciding with the edge of the first clamping region S11 near the central region S2 and / or the edge of the second clamping region S12 near the central region S2 effectively alleviates the compressive stress in the central region S2.

[0074] For example, the shape of the second recess 140 may include an arc, a square, a rectangle, a triangle, etc. As long as the requirements can be met, those skilled in the art can make a flexible choice according to the actual situation.

[0075] In one embodiment, the second recess 140 is arc-shaped, with a radius greater than or equal to 10 mm and less than or equal to 50 mm, such as 10 mm, 20 mm, 30 mm, 40 mm, or 50 mm. Therefore, when the second recess 140 is arc-shaped, there are almost no inflection points or turning points, and the surface of the second recess 140 is relatively smooth. When the display screen body 100 is stretched, the stress on the second recess 140 is more uniform, and the effect of dispersing compressive stress is excellent. The radius of the arc corresponding to the second recess 140 is within the above-mentioned range, which can effectively increase the surface length of the second recess 140, making it more conducive to avoiding the occurrence of wrinkles.

[0076] For example, the second recess 140 includes a third arcuate portion 143, a second straight portion 144, and a fourth arcuate portion 145. The third arcuate portion 143 and the fourth arcuate portion 145 are located on opposite sides of the second straight portion 144. The third arcuate portion 143 extends in a second direction y, away from the second surface 120 and toward the first surface 110, and the fourth arcuate portion 145 extends in the second direction y, away from the second surface 120 and toward the first surface 110. Therefore, the provision of the second recess 140 helps to alleviate the compressive stress in the central region S2, and also allows for a more suitable depth of the second recess 140.

[0077] In one embodiment, the depth of the second recess 140 in the second direction y is greater than or equal to 1 mm and less than or equal to 10 mm, for example, it can be 1 mm, 2 mm, 4 mm, 6 mm, 8 mm, or 10 mm. Therefore, the depth of the second recess 140 is suitable, which can alleviate compressive stress while allowing the display screen to have a larger display area. It should be noted that the depth of the second recess 140 refers to the maximum distance between any two points on the second surface 120 in the second direction y.

[0078] For example, the width of the second recess 140 gradually decreases in the first direction x along the direction away from the second surface 120.

[0079] For example, refer to Figure 6 and Figure 7 , Figure 6 The depth of the second recess 140 is less than Figure 7 As can be seen from the depth of the second recess 140, the area of ​​the display screen body 100 subjected to compressive stress decreases as the depth of the second recess 140 increases. For example... Figure 6 The area 2 of the display screen body 100 subjected to compressive stress is greater than Figure 7The area 4 of the display screen body 100 subjected to compressive stress. However, in order to make the display screen body have a larger display area, the radius of the arc corresponding to the second recess 140 is better within the range of 10mm or greater than or equal to 50mm.

[0080] Optionally, there may be multiple second recesses 140, which are spaced apart. For example, the second recesses 140 are spaced apart in the first direction x. Therefore, providing multiple second recesses 140 helps to increase the surface length of the second recesses 140, which is more conducive to avoiding the occurrence of wrinkles. Moreover, the arrangement of multiple second recesses 140 helps to increase the display area of ​​the display body, allowing the display body to have a better display effect.

[0081] Optionally, in the first direction x, the widths of the plurality of second recesses 140 may be the same or different. It should be noted that, in the first direction x, the width of the second recess 140 refers to the maximum distance between any two points in the second recess 140 along the first direction x. For example, in the first direction x, the width of the second recess 140 refers to the maximum distance between any two points in the second recess 140 along the second surface.

[0082] Optionally, the number of the first recess 130 and the number of the second recess 140 may be the same or different.

[0083] Optionally, a first recess 130 and a second recess 140 can be arranged symmetrically or asymmetrically.

[0084] For example, the first recess 130 and the second recess 140 are symmetrically arranged, with the axis of symmetry parallel to the first direction x, and the axis of symmetry being the centerline of the display screen body 100. This effectively alleviates the compressive stress on the display screen body 100 and facilitates manufacturing, for example, by facilitating the arrangement of wiring within the display screen body and improving the manufacturing yield of the display screen body.

[0085] In one embodiment, refer to Figure 9 The schematic diagram of the cross-sectional structure of the display module shown shows that the display module also includes a rotating component 200, which is connected to the clamping area S1.

[0086] Optionally, the clamping region S1 includes a first clamping region S11 and a second clamping region S12, located at opposite ends of the central region S2. The rotating component 200 can be connected to the first clamping region S11, the second clamping region S12, or simultaneously to both. It is understood that when the rotating component 200 is connected to both the first and second clamping regions S11 and S12, the number of rotating components 200 is at least two, with each component connected to both regions.

[0087] For example, the rotating component 200 can be connected to the first clamping area S11. At this time, the source of the pulling force applied to the second clamping area S12 can be the pulling force applied by the operator, such as the pulling force applied by a human hand, so that the display screen body 100 can be stretched or contracted. During the stretching or contraction process, at least part of the display screen body 100 is curled on the outer periphery of the rotating component 200, which helps to reduce the size of the display module and make it easy to carry.

[0088] Optionally, in the second direction y, the width of the first clamping region S11 is less than or equal to the width of the rotating component 200.

[0089] In one embodiment, the display module further includes a driving component for driving the rotating component to rotate. For example, the driving component includes a servo motor.

[0090] For example, a servo motor is an engine that controls the operation of mechanical components in a servo system; it is a type of auxiliary motor with indirect speed control. It can precisely control parameters such as speed, position, and torque. A servo motor mainly consists of a motor, an encoder (or a feedback device such as a resolver), and a driver. For instance, a servo motor is used to control the operation of rotating parts.

[0091] In one embodiment, refer to Figure 9 The display module also includes a rigid component 300, located in the second clamping area S12 and on the backlight side of the display body 100. It is understood that when a tensile force is applied to the second clamping area S12, the rigid component 300 ensures that the force on the second clamping area S12 is more uniform, further reducing the risk of wrinkles appearing on the display body 100 during the stretching process.

[0092] In one embodiment, refer to Figure 10The schematic diagram of the top view of the display screen body shows that the display screen body 100 includes a display area AA and a non-display area NA, with the non-display area NA surrounding at least a portion of the display area AA. A first recess 130 is located in the non-display area NA, and / or, a second recess 140 is located in the non-display area NA. Therefore, the placement of the first recess 130 and the second recess 140 has almost no impact on the area of ​​the display area AA, resulting in a better display effect for the display screen body 100. It should be noted that the clamping area S1 is located in the non-display area NA, and the central area S2 includes both the display area AA and the non-display area NA.

[0093] Optionally, in the second direction y, the display area AA has a first edge L1 and a second edge L2 disposed opposite to each other, the first edge L1 being adjacent to the first surface 110 and the second edge L2 being adjacent to the second surface 120. That is, the first edge L1 is disposed close to the first surface 110 and the second edge L2 is disposed close to the second surface 120.

[0094] Optionally, refer to Figure 11 The schematic diagram of the top view of the display screen body shows that the display screen body 100 also includes a third recessed portion 150, which is disposed at the first edge L1 and corresponds to the first recessed portion 130; and / or, the display screen body 100 also includes a fourth recessed portion 160, which is disposed at the second edge L2 and corresponds to the second recessed portion 140. In this case, the first recessed portion 130 and the second recessed portion 140 have a relatively large depth. Part of the first recessed portion 130 will be located on the side of the first edge L1 near the second surface 120, and part of the second recessed portion 140 will be located on the side of the second edge L2 near the first surface 110. Therefore, the pixel and line distribution of the display area needs to cooperate with the third recessed portion 150 and the fourth recessed portion 160 to avoid wrinkles in the display screen body 100 during stretching while having almost no impact on the display effect.

[0095] For example, the display module in this application embodiment can be a rollable display module, which allows the operator to unfold the display screen as needed to obtain a larger display area for watching videos, browsing web pages, etc. The rollable display module can provide a larger screen size for the display device, and the screen can be rolled up when not in use for easy carrying and storage.

[0096] For example, the display panel 100 includes an array substrate, which can be a flexible array substrate. For instance, the structure of the flexible array substrate includes a substrate, a barrier layer, and a thin-film transistor structure layer, etc.; wherein, the substrate is the base component used to support the entire array structure. In flexible array substrates, to achieve flexibility, the substrate material is usually an organic material, such as polyimide, polycarbonate, polyethylene terephthalate, polymethyl methacrylate, and their modified forms. These organic materials have advantages such as light weight and bendability, which can meet the basic requirements of flexible substrates. The barrier layer is located on the substrate and mainly serves to block water and oxygen and protect the internal circuit structure. It is usually made of inorganic materials, such as one or more combinations of alumina, silicon oxide, silicon nitride, silicon oxynitride, silicon carbide, titanium oxide, zirconium oxide, and zinc oxide. Its thickness is generally within a specific range to ensure good barrier effect. Thin-film transistor (TFT) structural layers are the core functional layers of the array substrate, including buffer layers, light-shielding layers, active layers, gate insulating layers, gate layers, interlayer dielectric layers, contact holes, source / drain layers, passivation layers, wiring layers, planarization layers, etc. The selection of materials for each layer needs to meet the corresponding electrical performance and process requirements. For example, inorganic layers such as silicon oxide and silicon nitride can be used for the gate insulating layer.

[0097] For example, the display module may also include pixel units, each pixel unit comprising multiple light-emitting devices. These light-emitting devices may be organic light-emitting diodes (OLEDs), micro light-emitting diodes (Micro LEDs), quantum dot light-emitting diodes (QLEDs), etc. The light-emitting devices may be of various colors, such as red light-emitting device R, green light-emitting device G, blue light-emitting device B, etc.

[0098] For example, the light-emitting device includes a first electrode and a second electrode, and at least one organic light-emitting functional layer located between the first electrode and the second electrode. The first electrode is located on the side of the second electrode closer to the array substrate, and the first electrode is at least partially exposed to the light emission port. The first electrode can be an anode, and the second electrode can be a cathode. The at least one organic light-emitting functional layer includes an emitting layer (EML), and may further include at least one of a hole injection layer (HIL), a hole transport layer (HTL), and an electron-blocking layer (EBL) located between the anode and the emitting layer (EML), and at least one of an electron injection layer (EIL), an electron transport layer (ETL), and a hole-blocking layer (HBL) located between the cathode and the emitting layer (EML).

[0099] Optionally, the display module may also include an isolation structure, typically using a fine metal mask (FMM) to pattern the light-emitting pixels. FMM technology is mature and has extensive mass production experience. However, FMM technology also suffers from limited precision, high development costs, and long development cycles. Using an isolation structure allows for precise patterning of light-emitting pixels without the need for an FMM. The absence of a fine metal mask eliminates the limitations of traditional OLED processes on display size, resolution, and other screen performance characteristics, offering advantages such as high performance, full-size display, and agile delivery. The isolation structure is used to electrically isolate adjacent light-emitting devices, specifically isolating at least a portion of the organic light-emitting functional layer and the first electrode of adjacent light-emitting devices. In one embodiment, the isolation structure includes a first part and a second part stacked together, with the first part located on the side of the second part facing away from the substrate, and the orthographic projection of the first part onto the substrate covering the orthographic projection of the second part onto the substrate. The isolation structure also includes a third part located on the side of the second part closer to the substrate, with the orthographic projection of the second part onto the substrate within the orthographic projection range of the third part onto the substrate. For example, the second part is a conductive film layer made of aluminum, and the third part is a conductive film layer made of molybdenum. In this case, the cross-section of the isolation structure is I-shaped.

[0100] A second aspect of this application provides a display device including the aforementioned display module.

[0101] It should be noted that, in addition to the display module described above, the display device may also include the structures that a conventional display device should have, such as driver chips, power supplies, and casings, which will not be elaborated on further here.

[0102] For example, the display device may include, but is not limited to, organic light-emitting diode (OLED) display devices, micro LED display devices, quantum dot LED display devices, etc. The display device can be used for monochrome display or color display; it can be used for dynamic display or static display.

[0103] For example, the display device in this application embodiment includes a rollable display device. The working principle of the rollable display device is as follows: When the rollable display device is needed, the screen rolling mechanism unfolds the flexible display screen to put it into a working state. For example, this can be achieved by manually stretching the second clamping area, causing the display screen to rotate around the rotating component, thus unfolding the display screen. During the unfolding process, the detection mechanism monitors the area of ​​the effective display area in real time and transmits the information to the processing mechanism. The processing mechanism adjusts the original image data according to the received information to adapt to the size of the effective display area. When the display device is not needed, the screen rolling mechanism rolls up the flexible display screen for easy storage and carrying. For example, this can be achieved by manually shrinking the display screen, causing the display screen to rotate around the rotating component, so that the display screen is rolled around the outer periphery of the rotating component.

[0104] For example, the types of display devices include, but are not limited to, mobile phones, computers, wearable devices, virtual reality display devices, etc.

[0105] For example, display devices can be integrated into furniture, appliances, and other equipment, such as televisions, refrigerators, and wardrobes; display devices can also be used in car dashboards, central control displays, rear entertainment systems, etc.

[0106] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0107] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A display module, characterized in that, The device includes a display screen body, which includes a clamping area and a central area. In a first direction, the clamping area is located on at least one side of the central area. In use, a pulling force is applied to the clamping area. The direction of the pulling force is parallel to the first direction and the direction of the pulling force is away from the central area. In the second direction, the display body has a first surface and a second surface disposed opposite to each other, the first direction intersecting the second direction; The display screen body includes at least one first recessed portion, the first recessed portion is disposed on the first surface, and in the second direction, the width of the display screen body corresponding to the area where the first recessed portion is located is less than the maximum width of the display screen body corresponding to the central area. And / or, the display body includes at least one second recess, the second recess being disposed on the second surface, and in the second direction, the width of the display body corresponding to the region where the second recess is located is less than the maximum width of the display body corresponding to the central region.

2. The display module according to claim 1, characterized in that, In the second direction, the depth of the first recess is greater than or equal to 1 mm and less than or equal to 10 mm; And / or, in the second direction, the depth of the second recess is greater than or equal to 1 mm and less than or equal to 10 mm.

3. The display module according to claim 1, characterized in that, The shape of the first recess includes an arc shape, the radius of which is greater than or equal to 10 mm and less than or equal to 50 mm; And / or, the shape of the second recess includes an arc shape, the radius of which is greater than or equal to 10 mm and less than or equal to 50 mm.

4. The display module according to claim 1, characterized in that, The clamping area includes a first clamping area and a second clamping area, which are located at opposite ends of the central area; The number of the first recess is one. In the first direction, the first recess includes a first end and a second end that are disposed opposite to each other. The first end coincides with the edge of the first clamping area near the central area, and / or the second end coincides with the edge of the second clamping area near the central area. And / or, the first recess includes a first arcuate portion, a first straight portion and a second arcuate portion, the first arcuate portion and the second arcuate portion are located on opposite sides of the first straight portion, the first arcuate portion extends in a second direction away from the first surface and toward the second surface, and the second arcuate portion extends in a second direction away from the first surface and toward the second surface. And / or, the number of the second recess is one, and in the first direction, the second recess includes a third end and a fourth end disposed opposite to each other, the third end coincides with the edge of the first clamping region near the central region, and / or, the fourth end coincides with the edge of the second clamping region near the central region; And / or, the second recess includes a third arcuate portion, a second straight portion and a fourth arcuate portion, the third arcuate portion and the fourth arcuate portion being located on opposite sides of the second straight portion, the third arcuate portion extending in a second direction away from the second surface and toward the first surface, and the fourth arcuate portion extending in a second direction away from the second surface and toward the first surface.

5. The display module according to claim 1 or 4, characterized in that, There are multiple first recesses, and the multiple first recesses are spaced apart. And / or, in the first direction, the widths of the plurality of first recesses are the same or different; And / or, the number of the second recesses is multiple, and the multiple second recesses are spaced apart; And / or, in the first direction, the widths of the plurality of second recesses are the same or different; And / or, the first recess and the second recess are symmetrically arranged, the axis of symmetry is parallel to the first direction, and the axis of symmetry is the centerline of the display screen body.

6. The display module according to claim 1, characterized in that, The display module also includes: A rotating component, the rotating component being connected to the clamping area; And / or, the clamping area includes a first clamping area and a second clamping area, the first clamping area and the second clamping area being located at opposite ends of the central area; The rotating component is connected to the first clamping area; And / or, in the second direction, the width of the first clamping region is less than or equal to the width of the rotating component.

7. The display module according to claim 6, characterized in that, The display module further includes: a driving component for driving the rotating component to rotate; And / or, the drive component includes a servo motor.

8. The display module according to claim 6, characterized in that, The display module further includes a rigid component located in the second clamping area and on the backlight side of the display screen body.

9. The display module according to claim 1, characterized in that, The display module includes a display area and a non-display area, wherein the non-display area surrounds at least a portion of the display area; The first recess is located in the non-display area, and / or the second recess is located in the non-display area; And / or, in the second direction, the display area has a first edge and a second edge disposed opposite to each other, the first edge being adjacent to the first surface and the second edge being adjacent to the second surface; The display screen body further includes a third recessed portion, which is disposed on the first edge and is correspondingly disposed to the first recessed portion; and / or, the display screen body further includes a fourth recessed portion, which is disposed on the second edge and is correspondingly disposed to the second recessed portion.

10. A display device, characterized in that, Includes the display module as described in any one of claims 1 to 9.

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