Display device and rolling method thereof

Abstract

An embodiment of the present application discloses a display device and a rolling method thereof; the display device includes a display panel, a roller recovery portion for rolling the display panel, a first support plate, a second support plate arranged opposite to the first support plate, and a height adjustment portion, wherein the height adjustment portion is used to displace the first support plate in a direction perpendicular to the second support plate; the present application sets a height adjustment portion between the first support plate and the second support plate, and uses the height adjustment portion to displace the first support plate in a direction perpendicular to the second support plate according to the height difference between the corresponding surfaces of the display panel rolled on the roller recovery portion and the display panel arranged outside the roller recovery portion, so as to reduce the height difference, thereby reducing the stress at the junction of the display panel rolled on the roller recovery portion and the display panel arranged outside the roller recovery portion, and the stress of the display panel rolled on the roller recovery portion, thereby reducing the risk of film separation when the display panel is rolled, recovered or released.

Description

Technical Field

[0001] The present application relates to the field of display, and in particular to a display device and a curling method thereof. Background Art

[0002] Currently, foldable terminals are already on the market, and the rollable form factor is a new form factor that can provide a larger and more convenient retractable display screen. It is a development direction for future display terminals and is also receiving increasing attention and recognition. However, rollability has very high requirements for the display panel. When the display panel is rolled up and stored, it will generate a certain amount of squeezing pressure on the display panel. This squeezing pressure can easily cause stratification of the display panel's laminated structure, posing a great challenge to the life of the display panel.

[0003] Therefore, there is an urgent need for a display device and a rolling method thereof to solve the above technical problems. Summary of the Invention

[0004] The present application provides a display device and a rolling method thereof, which can alleviate the current technical problem of film separation when the display panel is rolled up for recovery or released.

[0005] The present application provides a display device, comprising:

[0006] Display panel;

[0007] a reel recovery unit connected to the display panel and configured to reel the display panel;

[0008] A first support plate is provided on a light-emitting side away from the display panel;

[0009] a second supporting plate, disposed opposite to the first supporting plate and located on a side of the first supporting plate away from the display panel;

[0010] a height adjustment portion, disposed between the first support plate and the second support plate;

[0011] The height adjustment portion is used to displace the first support plate in a direction perpendicular to the second support plate.

[0012] In some embodiments, the height adjustment portion includes at least a first height adjustment sub-portion and a second height adjustment sub-portion, and the first height adjustment sub-portion is arranged on the side of the second height adjustment sub-portion close to the scroll recovery portion; wherein, the first height adjustment sub-portion and the second height adjustment sub-portion are independently controlled.

[0013] In some embodiments, the height adjustment portion includes two cross-arranged support rods and a bearing structure; wherein the bearing structure connects the two support rods and is located at the intersection of the two support rods.

[0014] In some embodiments, the display device further includes a driving portion; the bearing structure includes a first tooth portion connected to the two support rods and a second tooth portion connected to the driving portion; wherein the first tooth portion and the second tooth portion are correspondingly engaged with each other.

[0015] In some embodiments, the first tooth portion includes a groove, the second tooth portion includes a plurality of protrusions, and the protrusions include a telescopic structure for engaging and fixing with the groove.

[0016] In some embodiments, the grooves are distributed at equal distances, the displacement of the height adjustment portion corresponding to two adjacent grooves is a first distance, and the ratio of the thickness of the display panel to the first distance is a positive integer.

[0017] In some embodiments, the display device further includes a distance sensor, which is disposed on the first support plate and the second support plate and is configured to measure a distance between the first support plate and the second support plate.

[0018] In some embodiments, the display device further includes a reel turn number measuring unit for measuring the number of turns of the display panel rolled up on the reel recovery unit.

[0019] In some embodiments, the display panel includes a panel body and a first protective plate located between the panel body and the first support plate; wherein the first support plate includes a magnetic material, the first protective plate is an iron material, or the first protective plate includes a magnetic material with a magnetic property different from that of the first support plate.

[0020] The present application also provides a method for curling a display device, wherein the display device is any of the above-mentioned display devices, and the method for curling the display device includes:

[0021] obtaining a height difference between a corresponding surface of the display panel rolled up on the reel recovery portion and the display panel disposed outside the reel recovery portion;

[0022] According to the height difference, the first support plate is displaced in a direction perpendicular to the second support plate by using the height adjustment part to reduce the height difference.

[0023] Beneficial effects of the present application: The present application sets a height adjustment portion between the first support plate and the second support plate, and according to the height difference between the corresponding surfaces of the display panel curled on the scroll recovery portion and the display panel arranged outside the scroll recovery portion, uses the height adjustment portion to displace the first support plate in a direction perpendicular to the second support plate to reduce the height difference, thereby reducing the stress at the junction of the display panel curled on the scroll recovery portion and the display panel arranged outside the scroll recovery portion, and the display panel curled on the scroll recovery portion, reducing the risk of film layer separation when the display panel is curled, recovered or released, and improving the service life of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 is a structural diagram of a first structure of a display device provided in an embodiment of the present application;

[0026] Figure 2 yes Figure 1 An enlarged schematic diagram of region A;

[0027] Figure 3 is a schematic top view of a second structure of a display device provided in an embodiment of the present application;

[0028] Figure 4 is a structural diagram of a third structure of a display device provided in an embodiment of the present application;

[0029] Figure 5 is a structural diagram of a fourth structure of a display device provided in an embodiment of the present application;

[0030] Figure 6 is a simulation diagram of a comparative example of the display device provided in an embodiment of the present application;

[0031] Figure 7 is a simulation diagram of an experimental example of a display device provided in an embodiment of the present application;

[0032] Figure 8 is a flowchart of the steps of a method for curling a display device provided in an embodiment of the present application;

[0033] Figures 9A to 9B 1 is a flow chart of a method for curling a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0035] Currently, foldable terminals are already on the market, and the rollable form factor is a new form factor that can provide a larger and more convenient retractable display screen. It is a development direction for future display terminals and is also receiving increasing attention and recognition. However, rollability has very high requirements for the display panel. When the display panel is rolled up and stored, it will generate a certain amount of squeezing pressure on the display panel. This squeezing pressure can easily cause stratification of the display panel's laminated structure, posing a great challenge to the life of the display panel.

[0036] See also Figures 1 to 7 , an embodiment of the present application provides a display device 100, including:

[0037] Display panel 200;

[0038] a reel recovery unit 300 connected to the display panel 200 and configured to reel the display panel 200;

[0039] A first support plate 400 is provided on a light-emitting side away from the display panel 200;

[0040] a second support plate 500 , disposed opposite to the first support plate 400 and located on a side of the first support plate 400 away from the display panel 200 ;

[0041] a height adjustment portion 600 , disposed between the first support plate 400 and the second support plate 500 ;

[0042] The height adjustment portion 600 is used to move the first support plate 400 in a direction perpendicular to the second support plate 500 .

[0043] The present application sets a height adjustment part between the first support plate and the second support plate, and uses the height adjustment part to displace the first support plate in a direction perpendicular to the second support plate according to the height difference between the corresponding surfaces of the display panel rolled up on the scroll recovery part and the display panel arranged outside the scroll recovery part, so as to reduce the height difference, thereby reducing the stress at the junction of the display panel rolled up on the scroll recovery part and the display panel arranged outside the scroll recovery part, and the display panel rolled up on the scroll recovery part, reducing the risk of film separation when the display panel is rolled up, recovered or released, and improving the service life of the display device.

[0044] The technical solution of this application is now described in conjunction with specific embodiments.

[0045] In this embodiment, please refer to Figure 1 The display device 100 includes a display panel 200, a reel recovery portion 300 connected to the display panel 200 and used to roll up the display panel 200, a first support plate 400 arranged on the light-emitting side away from the display panel 200, a second support plate 500 arranged opposite to the first support plate 400 and located on the side of the first support plate 400 away from the display panel 200, and a height adjustment portion 600 arranged between the first support plate 400 and the second support plate 500; wherein the height adjustment portion 600 is used to displace the first support plate 400 in a direction perpendicular to the second support plate 500.

[0046] The larger the size of the display panel 200, the smaller the curling radius of the reel recovery part 300 needs to be if a smaller storage volume is to be achieved. However, if the curling radius is too small, in addition to the excessively high molding stress of the display panel 200 in the fully curled state, during the curling movement, the display panel 200 includes a curling portion 201 curled on the reel recovery part 300, a horizontal portion 202 arranged outside the reel recovery part 300, and a folded portion 203 located between the curling portion 201 and the horizontal portion 202. As the axis radius gradually accumulates, the pulling problem of the folded portion 203 will also be amplified, which can easily cause the film material to break or separate. The reason is that there is a height difference between the upper surface of the horizontal portion 202 and the upper surface of the top of the curling portion 201, which causes the display panel 200 to curl and wrinkle at the junction between the horizontal portion 202 and the curling portion 201, and the stress it is subjected to increases sharply, thereby causing the film layer of the display panel 200 to break or separate.

[0047] For the convenience of description, the horizontal direction is parallel to the X-axis, and the height direction is parallel to the Y-axis. A height adjustment portion 600 is provided between the first support plate 400 and the second support plate 500. According to the height difference between the horizontal portion 202 and the curled portion 201, the height adjustment portion 600 is utilized to displace the first support plate 400 in a direction perpendicular to the second support plate 500 so as to reduce the height difference, thereby reducing the degree of wrinkling and bending of the film layer at the junction between the horizontal portion 202 and the curled portion 201, thereby reducing the tensile stress of the film layer at the junction between the horizontal portion 202 and the curled portion 201, and subsequently reducing the tensile stress of the display panel 200 curled on the scroll recovery portion 300, thereby reducing the risk of film layer separation when the display panel 200 is curled, recovered or released.

[0048] Using simulations, tensile stress tests were conducted on the comparative example and experimental example. The comparative example did not include the height adjustment unit 600 and did not compensate for the height difference; the experimental example utilized the height adjustment unit 600 to reduce the height difference to zero. Both experiments were conducted after the display panel 200 was rolled four times by the reel recovery unit 300.

[0049] The comparative results are as follows, please refer to Figure 6 : The tensile stress of the folded portion 203 between the horizontal portion 202 and the curled portion 201 is 93 MPa, and the tensile stress of the curled portion 201 is 104 MPa.

[0050] The experimental results are as follows, please refer to Figure 7 : The tensile stress of the folded portion 203 between the horizontal portion 202 and the curled portion 201 is 13 MPa, and the tensile stress of the curled portion 201 is 90 MPa.

[0051] It can be seen that a height adjustment portion 600 is provided between the first support plate 400 and the second support plate 500. According to the height difference between the horizontal portion 202 and the curled portion 201, the height adjustment portion 600 is utilized to displace the first support plate 400 in a direction perpendicular to the second support plate 500, so as to reduce the height difference. The tensile stress in the curled portion 201 and the pleated portion 203 is reduced, especially the tensile stress in the pleated portion 203 is greatly reduced, which effectively reduces the risk of film separation when the display panel 200 is curled, recovered, or released.

[0052] In some embodiments, see Figure 1 The height adjustment portion 600 includes at least a first height adjustment sub-portion 610 and a second height adjustment sub-portion 620, wherein the first height adjustment sub-portion 610 is arranged on the side of the second height adjustment sub-portion 620 close to the reel recovery portion 300; wherein the first height adjustment sub-portion 610 and the second height adjustment sub-portion 620 are independently controlled.

[0053] The first height adjustment sub-section 610 is arranged at one end of the first support plate 400 close to the scroll recovery section 300, and the second height adjustment sub-section 620 is arranged at one end of the first support plate 400 away from the scroll recovery section 300. Both can be used to raise or lower the horizontal part 202, thereby reducing the height difference between the upper surface of the horizontal part 202 and the upper surface of the top of the curled part 201, thereby reducing the proportion of the wrinkled part 203, thereby reducing the tensile stress of the film layer at the junction between the horizontal part 202 and the curled part 201, and then reducing the tensile stress of the display panel 200 curled on the scroll recovery section 300, reducing the risk of film layer separation when the display panel 200 is curled, recovered or released.

[0054] The first height adjusting sub-section 610 and the second height adjusting sub-section 620 are independently controlled. For example, in the process of the display panel 200 being rolled up to the reel recovery section 300, the height of the first height adjusting sub-section 610 can be set to be slightly larger than the height of the second height adjusting sub-section 620, so as to be more conducive to the rolling and recovery of the display panel 200; for example, in the process of releasing the display panel 200 from the reel recovery section 300, the height of the first height adjusting sub-section 610 can be set to be slightly smaller than the height of the second height adjusting sub-section 620, so as to be more conducive to the release of the display panel 200; it should be noted that in both cases, the height difference between the upper surface of the horizontal part 202 and the upper surface of the top of the rolled part 201 needs to be greater than or equal to 0, thereby reducing the proportion of the wrinkled part 203, thereby reducing the tensile stress of the film layer at the junction between the horizontal part 202 and the rolled part 201.

[0055] In some embodiments, see Figure 1 、 Figure 2 The height adjustment portion 600 includes two cross-arranged support rods 601 and a bearing structure 602 ; wherein the bearing structure 602 connects the two support rods 601 and is located at the intersection of the two support rods 601 .

[0056] By cooperating with the support rod 601 and the bearing structure 602 , the height of the second support plate 500 and the horizontal portion 202 of the display panel 200 can be adjusted in the Y-axis direction using the height adjustment portion 600 .

[0057] In some embodiments, see Figure 2The height adjustment unit 600 further includes a connecting portion 603 located at the end of the support rod 601. The connecting portion 603 connects the support rod 601 to the first support plate 400 and to the second support plate 500. The bearing structure 602 rotates, causing the support rod 601 to rotate, thereby causing the connecting portion 603 and the first support plate 400 to move horizontally, the connecting portion 603 and the second support plate 500 to move horizontally, and the first support plate 400 to move vertically to adjust its height. In other words, the second support plate 500 is fixed, while the first support plate 400 is movable.

[0058] In some embodiments, see Figure 2 The display device 100 also includes a driving unit 700; the bearing structure 602 includes a first tooth portion 810 connected to the two support rods 601 and a second tooth portion 820 connected to the driving unit 700; wherein the first tooth portion 810 and the second tooth portion 820 are correspondingly engaged with each other.

[0059] The first tooth portion 810 and the second tooth portion 820 are engaged with each other to provide multi-stage hovering capability, appropriately increase the resistance of the bearing structure 602, thereby avoiding insufficient support force and reducing the risk of abnormal sliding of the first support plate 400 in the height direction.

[0060] In some embodiments, see Figure 2 The first tooth portion 810 includes a groove 811, and the second tooth portion 820 includes a plurality of protrusions 821. The protrusions 821 include a telescopic structure for engaging and fixing with the groove 811.

[0061] The retractable protrusion 821 is used to strengthen the bite fixation in the groove 811, thereby increasing the supporting force of the height adjustment portion 600 and reducing the risk of abnormal sliding of the first support plate 400 in the height direction.

[0062] In some embodiments, the grooves 811 are distributed at equal distances, the displacement of the height adjustment portion 600 between two adjacent grooves 811 is a first distance, and the ratio of the thickness of the display panel 200 to the first distance is a positive integer.

[0063] The display panel 200 is curled and wound on the reel recovery part 300. For each circle of winding, the horizontal part 202 of the display panel 200 needs to be raised by one unit of the thickness of the display panel 200 to reduce the height difference between the upper surface of the horizontal part 202 and the upper surface of the top of the curled part 201. Therefore, the unit height of the first support plate 400 and the horizontal part 202 of the display panel 200 needs to be raised to an integer multiple of the thickness of the display panel 200. The ratio of the thickness of the display panel 200 to the first distance is a positive integer, which can increase the supporting force maintained by the height adjustment part 600 in each state after the horizontal part 202 is lifted, thereby reducing the risk of abnormal sliding of the first support plate 400 in the height direction.

[0064] In some embodiments, see Figure 1 The display device 100 further includes a distance sensor 910 , which is disposed on the first support plate 400 and the second support plate 500 and is used to measure the distance between the first support plate 400 and the second support plate 500 .

[0065] The distance sensor 910 can be used to measure whether the first support plate 400 is at a predetermined lifting height. For example, the distance sensor 910 can be disposed on a surface of the second support plate 500 close to the first support plate 400 .

[0066] In some embodiments, see Figure 1 The display device 100 further includes a reel turn number measuring unit 920 for measuring the number of turns of the display panel 200 rolled up on the reel recovery unit 300 .

[0067] The number n of turns of the display panel 200 rolled up on the reel recovery part 300 can be measured. Using the number of turns and the thickness of the display panel 200, the height of each adjustment of the height adjustment part 600 can be calculated, for example, H=nZ, H is the adjusted height, and Z is the thickness of the display panel 200.

[0068] In some embodiments, the display device 100 further includes a curling length measuring unit for measuring the length of the display panel 200 curled on the scroll recovery unit 300 in a direction perpendicular to the axis of the scroll recovery unit 300 .

[0069] The length L of the display panel 200 rolled up on the reel recovery portion 300 in a direction perpendicular to the axial direction of the reel recovery portion 300 can be measured, and the number n of turns of the display panel 200 rolled up on the reel recovery portion 300 can be calculated, n = L / (2πr), r is the initial radius of the reel recovery portion 300, and n is rounded down to calculate the height of each adjustment of the height adjustment portion 600, for example H = nZ, H is the adjusted height, and Z is the thickness of the display panel 200.

[0070] In some embodiments, see Figure 1 The display panel 200 includes a panel body 210 and a first protective plate 220 located between the panel body 210 and the first support plate 400; wherein, the first support plate 400 includes a magnetic material, the first protective plate 220 is an iron material, or the first protective plate 220 includes a magnetic material with a different magnetic property from that of the first support plate 400.

[0071] The display panel 200 can be curled or released by relative displacement with the first support plate 400 in the horizontal direction, but it is difficult to be relative displaced in the height direction, thereby improving the support of the first support plate 400 to the display panel 200 without affecting the curling or release of the display panel 200.

[0072] In some embodiments, the first support plate 400 may be a retractable structure for covering a non-display area formed by the curling of the display panel 200 .

[0073] In some embodiments, the first support plate 400 may also be fixed.

[0074] In some embodiments, see Figure 3 The display device 100 also includes a third support plate 930, which is located at the end of the first support plate 400 close to the scroll recovery part 300. The thickness of the third support plate 930 is less than that of the first support plate 400, and is used to auxiliary support the folded portion 203 to reduce the tensile stress of the folded portion 203.

[0075] In some embodiments, see Figure 4 The thickness of the third support plate 930 gradually decreases from the first support plate 400 to the reel recovery unit 300. This prevents the third support plate 930 from contacting the reel recovery unit 300, reducing the risk of causing the reel recovery unit 300 to curl or release.

[0076] In some embodiments, see Figure 5The surface of the first support plate 400 away from the second support plate 500 is an arc surface, and the surface of the third support plate 930 away from the second support plate 500 is an arc surface.

[0077] The height of the surface is 5 degrees greater than the height of the surface of the first support plate 400 on the side away from the second support plate 500 .

[0078] The surface of the third support plate 930 is arranged to be slightly higher than the surface of the first support plate 400 to further reduce the tensile stress during curling and reduce the risk of film separation when the display panel 200 is curled, recovered, or released.

[0079] The present application sets a height adjustment part between the first support plate and the second support plate, and uses the height adjustment part to displace the first support plate in a direction perpendicular to the second support plate according to the height difference between the corresponding surfaces of the display panel rolled up on the reel recovery part and the display panel arranged outside the reel recovery part, so as to reduce the height difference, thereby reducing the stress at the junction of the display panel rolled up on the reel recovery part and the display panel arranged outside the reel recovery part, and the display panel rolled up on the reel recovery part, reducing the risk of film separation when the display panel is rolled up, recovered or released, and improving the service life of the display device.

[0080] See also Figure 8 The embodiment of the present application further provides a method for curling a display device 100, wherein the display device 100 is any of the above-mentioned display devices 100, and the method for curling the display device 100 includes:

[0081] S100, obtaining a height difference between the display panel 200 rolled up on the reel recovery portion 300 and a corresponding surface of the display panel 200 disposed outside the reel recovery portion 300;

[0082] 0S200, according to the height difference, using the height adjustment unit 600 to adjust the first support plate 400

[0083] The second support plate 500 is displaced in a direction perpendicular to the second support plate 500 to reduce the height difference.

[0084] The present application sets a height adjustment portion between the first support plate and the second support plate, and adjusts the height of the display panel rolled on the reel recovery portion and the corresponding surface of the display panel arranged outside the reel recovery portion.

[0085] The height adjustment portion is used to displace the first support plate in a direction perpendicular to the second support plate to reduce the height difference, thereby reducing the height difference between the display panel wound on the reel recovery portion and the display panel disposed outside the reel recovery portion.

[0086] The stress of the display panel junction and the display panel rolled up on the reel recovery part is reduced, thereby reducing the risk of film separation when the display panel is rolled up, recovered or released, and improving the service life of the display device.

[0087] The technical solution of this application is now described in conjunction with specific embodiments.

[0088] In this embodiment, the method for curling the display device 100 includes:

[0089] S100, obtaining the height difference between the display panel 200 rolled on the reel recovery unit 300 and the corresponding surface of the display panel 200 disposed outside the reel recovery unit 300, see Figure 9A 、 Figure 9B .

[0090] In some embodiments, the display device 100 further includes a reel turn number measuring unit 920 for measuring the number of turns of the display panel 200 rolled up on the reel recovery unit 300 .

[0091] The number n of turns of the display panel 200 rolled up on the reel recovery part 300 can be measured. Using the number of turns and the thickness of the display panel 200, the height of each adjustment of the height adjustment part 600 can be calculated, for example, H=nZ, H is the adjusted height, and Z is the thickness of the display panel 200.

[0092] In some embodiments, the display device 100 further includes a curling length measuring unit for measuring the length of the display panel 200 curled on the scroll recovery unit 300 in a direction perpendicular to the axis of the scroll recovery unit 300 .

[0093] The length L of the display panel 200 rolled up on the reel recovery portion 300 in a direction perpendicular to the axial direction of the reel recovery portion 300 can be measured, and the number n of turns of the display panel 200 rolled up on the reel recovery portion 300 can be calculated, n = L / (2πr), r is the initial radius of the reel recovery portion 300, and n is rounded down to calculate the height of each adjustment of the height adjustment portion 600, for example H = nZ, H is the adjusted height, and Z is the thickness of the display panel 200.

[0094] S200: Based on the height difference, the first support plate 400 is displaced in a direction perpendicular to the second support plate 500 by using the height adjustment unit 600 to reduce the height difference. Figure 9A 、 Figure 9B .

[0095] In some embodiments, the height difference can be close to 0. In particular, the height difference between the upper surface of the horizontal portion 202 and the upper surface of the top of the curled portion 201 can be greater than or equal to 0, thereby reducing the proportion of the wrinkled portion 203 and reducing the tensile stress of the film layer at the junction between the horizontal portion 202 and the curled portion 201.

[0096] The present application sets a height adjustment part between the first support plate and the second support plate, and uses the height adjustment part to displace the first support plate in a direction perpendicular to the second support plate according to the height difference between the corresponding surfaces of the display panel rolled up on the scroll recovery part and the display panel arranged outside the scroll recovery part, so as to reduce the height difference, thereby reducing the stress at the junction of the display panel rolled up on the scroll recovery part and the display panel arranged outside the scroll recovery part, and the display panel rolled up on the scroll recovery part, reducing the risk of film separation when the display panel is rolled up, recovered or released, and improving the service life of the display device.

[0097] The embodiment of the present application discloses a display device and a rolling method thereof; the display device includes a display panel, a roller recovery unit for rolling the display panel, a first support plate, and a roller disposed opposite to the first support plate.

[0098] The second support plate and the height adjustment part are used to displace the first support plate in a direction perpendicular to the second support plate 5; the present application sets a height adjustment part between the first support plate and the second support plate,

[0099] According to the height difference between the display panel rolled on the reel recovery portion and the corresponding surface of the display panel arranged outside the reel recovery portion, the height adjustment portion is used to displace the first support plate in a direction perpendicular to the second support plate to reduce the height difference, thereby reducing the height difference between the display panel rolled on the reel recovery portion and the corresponding surface of the display panel arranged outside the reel recovery portion.

[0100] The stress at the junction of the display panel outside the part and the display panel rolled up on the reel recovery part is reduced, reducing the risk of film separation when the display panel is rolled up, recovered or released.

[0101] The above is a detailed introduction to a display device and a curling method thereof provided by an embodiment of the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application; at the same time, for those skilled in the art

[0102] Technicians may make changes in the specific implementation methods and application scope based on the ideas of this application. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A display device, characterized in that: include: Display panel; a reel recovery unit connected to the display panel and configured to reel the display panel; A first support plate is provided on a light-emitting side away from the display panel; a second supporting plate, disposed opposite to the first supporting plate and located on a side of the first supporting plate away from the display panel; a height adjustment portion, disposed between the first support plate and the second support plate; In which, the display panel includes a curled portion curled on the scroll recovery portion, a horizontal portion arranged outside the scroll recovery portion, and a folded portion located between the curled portion and the horizontal portion, and the height adjustment portion is used to displace the first support plate in a direction perpendicular to the second support plate to adjust the height difference between the horizontal portion and the curled portion.

2. The display device according to claim 1, wherein The height adjustment portion includes at least a first height adjustment sub-portion and a second height adjustment sub-portion, wherein the first height adjustment sub-portion is arranged on a side of the second height adjustment sub-portion close to the reel recovery portion; Wherein, the first height adjustment sub-unit and the second height adjustment sub-unit are independently controlled.

3. The display device according to claim 1, wherein The height adjustment part includes two cross-arranged support rods and a bearing structure; Wherein, the bearing structure connects the two support rods and is located at the intersection of the two support rods.

4. The display device according to claim 3, wherein: The display device further includes a driving unit; The bearing structure includes a first tooth portion connected to the two support rods and a second tooth portion connected to the driving portion; Wherein, the first tooth portion and the second tooth portion are correspondingly engaged with each other.

5. The display device according to claim 4, wherein: The first tooth portion includes a groove, and the second tooth portion includes a plurality of protrusions. The protrusions include a telescopic structure for engaging and fixing with the groove.

6. The display device according to claim 5, wherein: The grooves are distributed at equal distances, the displacement of the height adjustment portion corresponding to two adjacent grooves is a first distance, and the ratio of the thickness of the display panel to the first distance is a positive integer.

7. The display device according to claim 1, wherein The display device further includes a distance sensor, which is disposed on the first support plate and the second support plate and is used to measure the distance between the first support plate and the second support plate.

8. The display device according to claim 1, wherein The display device further includes a reel turn number measuring unit for measuring the number of turns of the display panel rolled up on the reel recovery unit.

9. The display device according to claim 1, wherein The display panel includes a panel body and a first protection plate located between the panel body and the first support plate; The first support plate includes a magnetic material, the first protection plate is an iron material, or the first protection plate includes a magnetic material having a magnetic property different from that of the first support plate.

10. A method for curling a display device, characterized in that: The display device is the display device according to any one of claims 1 to 9, and the method for curling the display device comprises: obtaining a height difference between a corresponding surface of the display panel rolled up on the reel recovery portion and the display panel disposed outside the reel recovery portion; According to the height difference, the first support plate is displaced in a direction perpendicular to the second support plate by using the height adjusting portion to reduce the height difference.

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