Display device and computing device

Abstract

The technical solution of the present application discloses a display device and a computing device. For a display device with deformability and a folded display screen with a folding area, it is clearly stipulated that at least one of the following conditions is satisfied by the display side surface of the third part in the display device: the maximum height difference does not exceed 1 mm; the maximum slope change value does not exceed 0.3. For the folding area of the folded display screen, it is clearly stipulated that the flatness of the folding area in the folded display screen satisfies the following conditions: the height difference between the highest point and the lowest point of the fold is less than or equal to 0.25 mm; the maximum degree of slope change of the fold cross-section is less than or equal to 0.03. The display device and the folded screen have good flatness when flattened.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and more specifically, to a display device and a computing device. Background Art

[0002] With the continuous development of science and technology, more and more electronic devices with display functions are widely used in people's daily life and work, bringing great convenience to people's daily life and work, and becoming an indispensable and important tool for people today.

[0003] The main component of electronic devices to achieve display functions is the display screen. Bendable flexible display screen is a new type of display screen. At present, the technology of bendable flexible display screen has been developed and perfected, and it can be widely used in many electronic devices.

[0004] Since the bendable flexible display is a new type of display, electronic devices based on the flexible display will have unevenness problems when flattened after being bent. Summary of the invention

[0005] In view of this, the present application provides a display device and a computing device, and the scheme is as follows:

[0006] A display device, comprising:

[0007] A display device, the display device comprising a first portion, a second portion and a third portion, at least the third portion having a first deformation capability, the first deformation capability comprising an ability to allow the first portion and the second portion to change a relative angle, wherein the first portion and the second portion are located on opposite sides of the third portion;

[0008] Wherein, in the first posture, the display side surface of the third portion satisfies at least one of the following conditions:

[0009] The maximum height difference does not exceed 1mm;

[0010] The maximum slope change value does not exceed 0.3;

[0011] Wherein, in the first posture, the display device meets the planar condition.

[0012] Preferably, in the above display device, the conditions satisfied by the display side surface of the third portion include:

[0013] The display side surface of the third part has a plurality of sampling points, the spatial position parameters of the highest point and the lowest point among the sampling points are used to determine the maximum height difference, and the spatial position parameters of all the sampling points are used to determine the maximum slope change value;

[0014] Or, the display side surface of the third portion has a plurality of sampling point sets, and the sampling point sets have a plurality of sampling points; in the same sampling point set, the sampling points satisfy a collinearity condition, and the spatial position parameters of the highest point and the lowest point of the sampling points are used to determine the maximum height difference, and the spatial position parameters of all sampling points are used to determine the maximum slope change value;

[0015] Or, the display side of the third part has multiple sampling point sets, and the sampling point set has multiple sampling points; in the same sampling point set, the sampling points are located in an adjacent raised area and a recessed area, and the spatial position parameters of the highest point and the lowest point in the sampling points are used to determine the maximum height difference, and the spatial position parameters of all sampling points are used to determine the maximum slope change value.

[0016] Preferably, in the above display device, if the sampling points in the same sampling point set satisfy the co-linear condition, the sampling points in the same sampling point set correspond to the same scan line, and the spatial position parameters of the sampling points in each scan line are used to determine the maximum sampling height difference and the maximum sampling slope change value of the scan line;

[0017] Among them, the maximum height difference is the maximum value of multiple maximum sampling height differences, and the maximum slope change value is the maximum value of multiple maximum sampling slope change values.

[0018] Preferably, in the above display device, the spatial position parameter includes: a first position parameter and a second position parameter, the first position parameter can characterize the position coordinate of the sampling point on the first coordinate axis X, the second position parameter can characterize the position coordinate of the sampling point on the second coordinate axis Y, the first coordinate axis X and the second coordinate axis Y meet a perpendicular condition; in the first posture, the first coordinate axis X and the display side surface meet a parallel condition, and meet a parallel condition with the arrangement direction of the three parts in the display device, and the second coordinate axis Y and the display side surface meet a perpendicular condition; the scanning line and the first coordinate axis X meet a parallel condition;

[0019] In the same scan line, the maximum sampling height difference is the difference between the position coordinates of the highest point and the lowest point on the second coordinate axis Y;

[0020] The scanning line has N sampling points, N is a positive integer greater than 1, and in the extension direction of the scanning line, the N sampling points are sequentially from the 1st sampling point to the Nth sampling point; wherein, among the K+1th sampling point to the NKth sampling point, each sampling point is used to determine a sampling slope change value, K is a set constant, K is an integer not less than 0 and less than N, and N is not less than 2K+1; the iKth sampling point P i-K The spatial position parameter is (xi-K ,y i-K ), the i-th sampling point P i The spatial position parameter is (x i ,y i ), the i+Kth sampling point P i+K The spatial position parameter is (x i+K ,y i+K ), the sampling slope change value corresponding to the i-th sampling point is:

[0021]

[0022] Preferably, in the above-mentioned display device, the maximum height difference does not exceed 0.25 mm; and the maximum slope change value does not exceed 0.03.

[0023] Preferably, in the above-mentioned display device, the display device has a fixing component, which is connected to the display device and is used to fix the display device; in the first posture, the fixing component is used to apply an external force to the first part away from the second part and / or apply an external force to the second part away from the first part.

[0024] Preferably, in the above-mentioned display device, the fixing component includes a first support member and a second support member arranged on the back side of the display device away from the display side surface, the first support member is arranged opposite to the first part on the back side, and the second support member is arranged opposite to the second part on the back side; the first support member and the second support member do not have deformation ability; if the first support member and the second support member satisfy the coplanar condition, the display side surface can satisfy the plane condition; wherein, after satisfying the coplanar condition, the first support member applies an external force to the first part away from the second part and / or the second support member applies an external force to the second part away from the first part.

[0025] Alternatively, the fixing assembly includes at least one first fixing element connected to the display device, and in the first posture, the first fixing element provides a pulling force to the display device, under which the first part and the second part at least have a tendency to move away from each other.

[0026] Preferably, in the above display device, the fixing assembly includes a first support member and a second support member arranged on the back side of the display device away from the display side surface, the first support member is arranged opposite to the first part on the back side, and the second support member is arranged opposite to the second part on the back side; the first support member and / or the second support member has a second deformation capability, and the second deformation capability includes the capability of changing the length along a preset direction;

[0027] The preset direction and the display device in the first posture meet a vertical condition.

[0028] The present invention also provides a computing device, comprising:

[0029] Folding display;

[0030] Wherein, the flatness of the folding area of ​​the folding display screen meets the following conditions:

[0031] The height difference between the highest and lowest points of the fold is less than or equal to 0.25mm;

[0032] The maximum degree of change in the slope of the fold section is less than or equal to 0.03.

[0033] Preferably, in the above computing device, the folded area corresponds to at least two scan lines; the scan line has a plurality of sampling points; the fold cross section is a cross section along the extension direction of the scan line;

[0034] The highest point and the lowest point are two extreme value test points on the same scan line;

[0035] The maximum degree of slope change of the fold cross section is the maximum slope change of the same scan line.

[0036] From the above description, it can be seen that in the display device and computing device provided by the technical solution of the present application, for the display device with deformation ability and the folding display screen with a folding area, it is clearly stipulated that the display side surface of the third part of the display device satisfies at least one of the following conditions: the maximum height difference does not exceed 1mm; the maximum slope change value does not exceed 0.3; for the folding area of ​​the folding display screen, it is clearly stipulated that the flatness of the folding area in the folding display screen satisfies the following conditions: the height difference between the highest point and the lowest point of the fold is less than or equal to 0.25mm; the maximum degree of slope change of the fold section is less than or equal to 0.03; the display device and the folding screen have good flatness when flattened. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0038] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0039] Figure 1 A top view of a display device provided by the technical solution of this application;

[0040] Figure 2 A schematic diagram of the calculation principle of the maximum sampling height of a scan line in this application;

[0041] Figure 3 A schematic diagram of the calculation principle of the maximum sampling slope change value of a scan line in this application;

[0042] Figure 4 A schematic diagram of a display device provided in an embodiment of the present application when the display device does not meet the planar condition;

[0043] Figure 5 A schematic diagram of a display device provided in an embodiment of the present application when the display device meets the planar condition;

[0044] Figure 6 A schematic diagram of another display device provided in an embodiment of the present application when the display device does not meet the planar condition;

[0045] Figure 7 A schematic diagram of another display device provided in an embodiment of the present application when the display device meets the planar condition;

[0046] Figure 8 A schematic diagram of another display device provided in an embodiment of the present application when the display device does not meet the planar condition;

[0047] Fig. 9 A schematic diagram of another display device provided in an embodiment of the present application when the display device meets the planar condition;

[0048] Fig.10 A schematic diagram of the principle of a fitting support assembly provided in an embodiment of the present application;

[0049] Fig.11 A schematic diagram of a display device parameter design in an embodiment of the present application;

[0050] Fig.12 A schematic diagram of another display device provided in an embodiment of the present application when the display device meets the planar condition;

[0051] Fig.13 A schematic diagram of another display device provided in an embodiment of the present application when the display device meets the planar condition;

[0052] Fig.14 A top view of the display device facing the display side surface;

[0053] Fig.15 A schematic diagram of another display device provided in an embodiment of the present application when the display device meets the planar condition;

[0054] Fig.16 A schematic diagram of another display device provided in an embodiment of the present application when the display device meets the planar condition;

[0055] Fig.17 for Fig.16 The diagram shows the principle of buffering deformation of a support member in a display device during bending deformation. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the embodiments in 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 ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0057] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0058] like Figure 1 As shown, Figure 1 A top view of a display device provided by the technical solution of the present application, the display device comprising: a display device 11, the display device 11 comprising a first part 101, a second part 102 and a third part 103, at least the third part 103 having a first deformation capability, the first deformation capability comprising the capability of allowing the first part 101 and the second part 102 to change the relative angle, wherein the first part 101 and the second part 102 are located on opposite sides of the third part 103, that is, the third part 103 is located between the first part 101 and the second part 102.

[0059] Wherein, in the first posture, the display side surface of the third part 103 satisfies at least one of the following conditions: the maximum height difference does not exceed 1 mm; the maximum slope change value does not exceed 0.3.

[0060] Wherein, in the first posture, the display device satisfies the plane condition. In the technical solution of the present application, the display device satisfies the plane condition, which indicates that three parts of the display device are coplanar or approximately coplanar.

[0061] In the embodiment of the present application, the flatness parameter of the display device satisfies the above conditions, and the flatness parameter includes: the maximum height difference and the maximum slope change value. In this way, the display device can have a better flat display effect and can also avoid the problem of unevenness perceived by users due to excessive flatness parameters.

[0062] In the first posture, if the maximum height difference does not exceed 1mm, the display device that meets the plane condition can have a better plane display effect, avoiding the large height difference caused by the bend affecting the display effect. Moreover, within the maximum height difference range, the macroscopic visual effect is not easy to perceive the height change of the third part 103 caused by the bend, avoiding the human eye from being able to perceive the obvious height difference. Among them, the plane display effect refers to the display effect through the plane display device, and the displayed image can be a 2D image or a 3D image. Moreover, for a display device with an integrated touch function, it can also avoid the user's touch operation from being able to perceive obvious height changes.

[0063] In the first posture, if the maximum slope change value does not exceed 0.3, the display device that meets the plane condition can have a better plane display effect, avoiding the large slope change value caused by the bend affecting the display effect. Moreover, within the maximum slope change value range, the macroscopic visual effect is not easy to perceive the slope change of the third part 103 caused by the bend, avoiding the human eye from being able to perceive obvious slope changes. Moreover, for a display device with an integrated touch function, it can also avoid the user's touch operation from being able to perceive obvious ups and downs.

[0064] It should be noted that Figure 1 In the figure, the display device is a full-screen mobile phone as an example for illustration. Obviously, the display device is not limited to a mobile phone, but can also be a tablet computer, a laptop computer, an all-in-one computer, a television, a smart wearable device and other electronic devices with display functions. In addition, the dotted line between two adjacent parts is only for the convenience of showing the area division of different parts. In the actual product, there is no such dotted line for distinguishing the two adjacent parts.

[0065] In the display device described in the embodiment of the present application, the range of the maximum height difference and / or the maximum slope change value in the display side surface of the third part 103 in the display device is clearly specified, and the display device has good flatness when flattened.

[0066] In the embodiment of the present application, the conditions satisfied by the display side surface of the third portion 103 include the following three modes:

[0067] First way:

[0068] The display side surface of the third portion 103 has a plurality of sampling points, the spatial position parameters of the highest point and the lowest point among the sampling points are used to determine the maximum height difference, and the spatial position parameters of all sampling points are used to determine the maximum slope change value.

[0069] In the first way, the maximum height difference and the maximum slope change value can be determined based on multiple sampling points determined in the display side surface of the third part 103. The sampling points can be arbitrarily selected and determined in the third part 103 based on the needs. Multiple sampling points can be arranged in an array or randomly arranged in the third part 103. The sampling points are used to obtain the spatial position parameters of the corresponding positions in the third part 103. The third part 103 does not have a visual identification graphic to display the sampling point position. The sampling points can be determined based on the sampling position of the detection device corresponding to the third part 103.

[0070] In the first way, the highest point and the lowest point are determined among all the sampling points, and the maximum height difference of the display side surface of the third part 103 can be determined based on the spatial position parameters of the highest point and the lowest point. In this way, after the highest point and the lowest point are determined, only one subtraction operation is required to determine the maximum height difference.

[0071] In the first way, all the sampling points can be divided into multiple test groups, each test group having three different sampling points. The three sampling points in the same test group are located on the same plane line, and in the first posture, the plane line is located in a plane perpendicular to the display device. The extension direction of the plane line can be arbitrarily set based on demand, and can be the arrangement direction of the three parts in the display device, or can be any other extension direction in the third part 103. There is no visual identification graphic in the third part 103 to show the position of the plane line. The plane line is used to group the sampling points to facilitate the calculation of the slope change.

[0072] The sampling points in different test groups are not completely the same. If a test group includes three sampling points ABC, other test groups have at most two of the three sampling points ABC, or the sampling points in different test groups are completely different. In this case, a sampling point belongs to only one test group. In this way, for the three sampling points in a test group, on the corresponding plane line, the middle sampling point can respectively determine a slope with the other two sampling points on both sides thereof, and the absolute value of the difference between the two slopes can determine the sampling slope change value of the test group. Based on all the sampling slope change values, the maximum slope change value of the display side surface of the third part 103 can be determined. For example, the maximum sampling slope change value can be selected as the maximum slope change value of the display side surface of the third part 103.

[0073] Second way:

[0074] The display side surface of the third part has multiple sampling point sets, and the sampling point sets have multiple sampling points; in the same sampling point set, the sampling points meet the collinearity condition, the spatial position parameters of the highest point and the lowest point among the sampling points are used to determine the maximum height difference, and the spatial position parameters of all sampling points are used to determine the maximum slope change value.

[0075] In the second method, the maximum height difference and the maximum slope change value can be determined based on a plurality of sampling point sets within the display side surface of the third part 103. All sampling points in the same sampling point set satisfy the collinearity condition, that is, the sampling points in the same sampling point set are located on the same scan line, and in the first posture, the scan line is located in a plane perpendicular to the display device. The extension direction of the scan line can be arbitrarily set based on demand, and can be the arrangement direction of the three parts in the display device, or can be any other extension direction within the third part 103. The extension directions of the scan lines corresponding to the sampling point sets can be the same, that is, the planes perpendicular to the display device corresponding to any two of the scan lines are parallel to each other, or the extension directions of the scan lines corresponding to the sampling point sets can be different, that is, the planes perpendicular to the display device corresponding to at most any two of the scan lines are parallel to each other. This method collects the spatial position parameters of multiple sampling points on the extension path of the scan line corresponding to the display side surface of the third part 103 in sequence.

[0076] In the second mode, each sampling point set determines the maximum sampling height difference through the highest point and the lowest point corresponding to itself, and determines the maximum sampling slope change value through the scan line corresponding to itself. The maximum height difference of the third part 103 can be the maximum value of multiple maximum sampling height differences determined by each sampling point set.

[0077] Generally, for the bendable display device, when it is bent, the relative angle between the first part 101 and the second part 102 is changed by the bending deformation of the third part 103. Therefore, when the display device is bent and restored to the first posture, the maximum height difference and the maximum slope change value of the display side surface of the third part 103 should be on the scanning line parallel to the arrangement direction of the three parts. Therefore, in the embodiment of the present application, if the sampling points in the same sampling point set meet the co-linear condition, the sampling points in the same sampling point set correspond to the same scanning line, and the spatial position parameters of multiple sampling points on the scanning line can be collected in sequence based on the extension direction of the scanning line by scanning, and the spatial position parameters of the sampling points in each scanning line are used to determine the maximum sampling height difference and the maximum sampling slope change value of the scanning line.

[0078] Each of the scan lines can correspond to a maximum sampling height difference and a maximum sampling slope change value. In the second mode, the maximum height difference is the maximum value of multiple maximum sampling height differences determined by each of the sampling point sets, and the maximum slope change value is the maximum value of multiple maximum sampling slope change values ​​determined by each of the sampling point sets.

[0079] like Figure 2 As shown, Figure 2 This is a schematic diagram of the calculation principle of the maximum sampling height of a scan line in this application. Figure 2 , multiple sampling points 104 located in the same scan line are shown. The spatial position parameters include: a first position parameter x and a second position parameter y, wherein the first position parameter x can represent the position coordinates of the sampling point 104 on the first coordinate axis X, and the second position parameter y can represent the position coordinates of the sampling point 104 on the second coordinate axis Y. The first coordinate axis X and the second coordinate axis Y meet the vertical condition and constitute a plane rectangular coordinate system.

[0080] In the first posture, Figure 2 This is a partial enlarged view of a scan line of the third part 103 in the display device. From a macroscopic perspective, the display side surfaces of the three parts of the display device are approximately coplanar. In the first posture, the first coordinate axis X and the display side surface meet the parallel condition, and meet the parallel condition with the arrangement direction of the three parts in the display device, and the second coordinate axis Y and the display side surface meet the perpendicular condition; the scan line and the first coordinate axis X meet the parallel condition. In the embodiments of the present application, meeting the parallel condition means that two objects are parallel or approximately parallel, and meeting the perpendicular condition means that two objects are perpendicular or approximately perpendicular.

[0081] exist Figure 2In the scan line shown, the highest point in the sampling point 104 is A, and the lowest point is B. It should be noted that in the same scan line, the highest point A and the lowest point B can be the vertex of an adjacent convex area and the valley point of a concave area, respectively. In other ways, the two can also be the vertex of a non-adjacent convex area and the valley point of a concave area. The height of the highest point A relative to the reference plane S1 is Hmax, and the height of the lowest point B relative to the reference plane S1 is Hmin. In the same scan line, the maximum sampling height difference is the difference between the position coordinates of the highest point A and the lowest point B on the second coordinate axis Y, so the maximum sampling height difference △H corresponding to the scan line is Hmax-Hmin. The coordinate origin can be set to be located on the reference plane S1, Hmin is a negative value, and Hmax is a positive value. The first part 101 and the second part 102 can be unbent, and the plane where the two are located in the first posture can be used as the reference plane. The position of the reference plane S1 can be set based on demand, and other planes parallel to the display side surface in the first posture can also be set as reference planes.

[0082] exist Figure 2 In the illustrated method, the plane where the three parts of the display device are initially flattened in the first posture is used as the zero point position of the second coordinate axis Y. In other methods, the position of the acquisition device for acquiring spatial position parameters can also be used as the zero point position of the second coordinate axis Y. The zero point position of the second coordinate axis Y can be set based on demand, with different planes parallel to the display device as reference planes, without changing the relative positions of the sampling points 104 in the scan line, so it does not affect the calculation results of the maximum sampling height difference and the maximum sampling slope change value. The slope of the scan line can be characterized by the tangent L0 at different positions thereof.

[0083] In the scan line, the number and step length of the sampling points can be set based on demand, and this is not specifically limited in the embodiments of the present application.

[0084] like Figure 3 As shown, Figure 3 Schematic diagram of the calculation principle of the maximum sampling slope change value of a scan line in the present application, assuming that the scan line has N sampling points 104, N is a positive integer greater than 1, and in the extension direction of the scan line (the direction parallel to the first coordinate axis X), the N sampling points 104 are the first sampling point P 1 To the Nth sampling point P N Among them, the K+1th sampling point P K+1 To the NKth sampling point P N-K In the example, each sampling point is used to determine a sampling slope change value, K is a set constant, K is an integer not less than 0 and less than N, N is not less than 2K+1; the i-th sampling point P i The corresponding sampling slope change value is equal to the first slope k 1and the second slope k 2 The absolute value of the difference between the values ​​of K and NK, i is a positive integer not less than K+1 and not greater than NK, and the first slope k 1 is the i-th sampling point P i and the iKth sampling point P i-K The slope in the XY coordinate system, the second slope k 2 is the i+Kth sampling point P i+K With the i-th sampling point P i The slope in the XY coordinate system.

[0085] Set the iKth sampling point P i-K The spatial position parameter is (x i-K ,y i-K ), the i-th sampling point P i The spatial position parameter is (x i ,y i ), the i+Kth sampling point P i+K The spatial position parameter is (x i+K ,y i+K ), then the first slope k 1 and the second slope k 2 They are:

[0086]

[0087]

[0088] Therefore, the i-th sampling point P i The corresponding sampling slope change value S i for:

[0089] S i =|k 1 -k 2 |

[0090] If K=15, i=n, ​​the sampled slope change value Sn is:

[0091]

[0092] If the step length of two adjacent sampling points in the same scan line on the first coordinate axis X is set to 0.5 mm, then:

[0093]

[0094] In the second method, each scan line can determine its corresponding maximum sampling height difference based on its highest point and lowest point, and can correspond to the K+1th sampling point P K+1 To the NKth sampling point P N-KN-2K sampled slope change values ​​are determined, and a maximum value among the N-2K sampled slope change values ​​may be selected as the maximum sampled slope change value of the scan line.

[0095] The third way:

[0096] The display side of the third part has a plurality of sampling point sets, and the sampling point sets have a plurality of sampling points; in the same sampling point set, the sampling points are located in an adjacent raised area and a recessed area, and the spatial position parameters of the highest point and the lowest point of the sampling points are used to determine the maximum height difference, and the spatial position parameters of all sampling points are used to determine the maximum slope change value.

[0097] In the third mode, each of the sampling point sets corresponds to a three-dimensional undulating area, and the undulating area includes an adjacent three-dimensional convex area and a three-dimensional concave area. Each of the sampling point sets can determine a maximum sampling height difference, and the maximum sampling height difference is equal to the height difference between the highest point and the lowest point in the sampling point set. Each of the sampling point sets can determine a maximum sampling slope change value. For the sampling point set, the maximum sampling slope change value can be determined as in the first mode.

[0098] In the first mode, the highest point is the sampling point with the largest second position parameter, the lowest point is the sampling point with the smallest second position parameter, and there may be one or more of the highest point and the lowest point. In the second and third modes, in the same sampling point set, the highest point is the sampling point with the largest second position parameter in the sampling point set, the lowest point is the sampling point with the smallest second position parameter in the sampling point set, and there may be one or more of the highest point and the lowest point.

[0099] In the embodiment of the present invention, the maximum height difference can be further set to not exceed 0.25mm; the maximum slope change value can be set to not exceed 0.03. In the first posture, when the display side surface of the third part 103 satisfies the maximum height difference of not more than 0.25mm and the maximum slope change value of not more than 0.03, the display device can have a higher plane display effect, avoiding the large height difference and slope change value caused by the bend to affect the display effect, and the macroscopic visual effect is not easy to perceive the height change and slope change of the third part 103 caused by the bend, avoiding the human eye to perceive the obvious height difference and slope change. Within the maximum height difference and maximum slope change range, it can make it extremely difficult for the user to perceive the ups and downs of the third part visually and / or tactilely.

[0100] The display device described in the embodiment of the present application has a fixing component, which is connected to the display device and is used to fix the display device; in the first posture, the fixing component is used to apply an external force away from the second part 102 to the first part 101 and / or apply an external force away from the first part 101 to the second part 102, so that the third part 103 of the display device can have a smaller maximum height difference and maximum slope change value in the first posture.

[0101] like Figure 4 and Figure 5 As shown, Figure 4 A schematic diagram of a display device provided in an embodiment of the present application when the display device does not meet the planar condition, Figure 5 A schematic diagram of a display device provided in an embodiment of the present application when the display device meets the planar condition, in which the display device has a fixing component 12, and the fixing component 12 includes a first support member 121 and a second support member 122 arranged on the back side of the display device 11 away from the display side surface, the first support member 121 is arranged opposite to the first part 101 on the back side, and the second support member 122 is arranged opposite to the second part 102 on the back side; the first support member 121 and the second support member 122 do not have deformation ability; if the first support member 121 and the second support member 122 meet the coplanar condition, the display device 11 can meet the planar condition.

[0102] Wherein, after the coplanar condition is met, the first support member 121 applies an external force away from the second part 102 to the first part 101 and / or the second support member 122 applies an external force away from the first part 101 to the second part 102. The display device 11 has opposite first and second surfaces 111 and 112, wherein the first surface 111 is a display side surface and the second surface 112 is a back surface opposite to the display side back surface. The first support member 121 and the second support member 122 apply external forces away from each other to the first part 101 and the second part 102, based on which the third part 103 will be subjected to two pulling forces in opposite directions, so that it can be flattened after the plane condition is met, so that the third part 103 has a smaller maximum height difference and a smaller maximum slope change value, and has better flatness.

[0103] In the display device, at least the third portion 103 can be bent, so that the third portion 103 can be bent when the first support member 121 and the second support member 122 rotate relative to each other. The first support member 121 corresponds to the first portion 101 and corresponds to a part of the third portion 103, and the second support member 122 corresponds to the second portion 102 and corresponds to another part of the third portion 103. The first support member 121 and the second support member 122 meet the coplanar condition, including that the surface of the first support member 121 facing the first portion 101 and the surface of the second support member 122 facing the second portion 102 are flush, or approximately flush. The display device 11 meets the plane condition, including that the first portion 101, the second portion 102 and the third portion 103 are located in the same plane, or approximately located in the same plane.

[0104] If the plane condition is met, the first support member 121 and the second support member 122 are in contact with each other, and at the contact position, the first support member 121 applies a thrust toward the second support member 122 to the second support member 122, and the second support member 122 applies a thrust toward the first support member 121 to the first support member 121, so that there is a mutual extrusion thrust between the first support member 121 and the second support member 122, and the thrust can cause the first support member 121 to apply an external force to the first part 101 away from the second part 102, and cause the second support member 122 to apply an external force to the second part away from the first part 101. The contact refers to direct or indirect contact between objects, and there is a mutual thrust.

[0105] exist Figure 4 and Figure 5 In the illustrated embodiment, the first side surface C1 of the first support member 121 and the second side surface C2 of the second support member 122 are arranged opposite to each other; the edge of the first side surface C1 close to the display device 11 and the edge of the second side surface C2 close to the display device 11 meet the common edge coincidence condition, and the first side surface C1 and the second side surface C2 can be used as a rotation reference based on the two coincident edges. The two coincident edges are both parallel to the display device 11. If the first support member 121 and the second support member 122 meet the coplanar condition, the first side surface C1 and the second side surface C2 are relatively overlapped and abutted. Wherein, the common edge coincidence condition is met: the edge of the first side surface C1 parallel to and close to the display device 11 coincides or approximately coincides with the edge of the second side surface C2 parallel to and close to the display device 11, so that the support assembly 12 can be used as a rotation reference based on the coincident abutment position of the two.

[0106] exist Figure 4 and Figure 5In the display device shown, if the first surface 111 satisfies the planar condition, the first side surface C1 and the second side surface C2 overlap and directly contact and abut.

[0107] like Figure 6 and Figure 7 As shown, Figure 6 A schematic diagram of another display device provided in an embodiment of the present application when the display device does not meet the planar condition, Figure 7 A schematic diagram of another display device provided in an embodiment of the present application when the display device meets the planar condition. In this mode, the first support member 121 and the second support member 122 are in contact with each other through the rotating shaft 13, and the two can rotate relative to each other based on the rotating shaft. At this time, the first side surface C1 and the second side surface C2 can be concave surfaces respectively adapted to the rotating shaft 13, so that the first support member 121 and the second support member 122 can both rotate based on the rotating shaft 13.

[0108] like Figure 8 and Fig. 9 As shown, Figure 8 A schematic diagram of another display device provided in an embodiment of the present application when the display device does not meet the planar condition, Fig. 9 A schematic diagram of another display device provided in an embodiment of the present application when the display device meets the planar condition. In this mode, the first support member 121 and the second support member 122 are abutted by an elastic component 14, and the elastic component 14 is compressed between the first support member 121 and the second support member 122. The elastic component 14 can provide an elastic force for the first support member 121 to move away from the second support member 122, and the elastic component 14 can provide an elastic force for the second support member 122 to move away from the first support member 121, and the elastic component 14 can be bent so that the display side surface of the first part 101 and the display side surface of the second part 102 are relatively bent. At this time, the first side surface C1 and the second side surface C2 can be planes opposite to the elastic component 14, or concave surfaces surrounding the ends of the elastic component. Among them, the elastic component 14 can be a spring component or a gooseneck tube, which is a stretchable, bendable and compressible component with a compression rebound force.

[0109] The first part 101 and the second part 102 can switch between a first posture and a second posture by changing the relative angle. Wherein, in the second posture, the display side surface of the first part 101 and the display side surface of the second part 102 meet the relative condition. The relative condition includes: the display side surface of the first part 101 and the display side surface of the second part 102 are relatively parallel, or approximately parallel, and at this time, the first part 101 and the second part 102 are relatively covered toward the display side surface. Based on the rotation of the two support members of the support assembly 12, the third part 103 of the display device 11 can be bent toward the display side surface, changing the relative angle between the display side surface of the first part 101 and the display side surface of the second part 102. In the first posture, the display side surface of the first part 101 and the display side surface of the second part 102 meet the plane condition.

[0110] In the display device described in the embodiment of the present application, the back of the first part 101 is fixedly attached to the first support member 121 by the first adhesive member 21, and the back of the second part 102 is fixedly attached to the second support member A2 by the second adhesive member 22. In order to ensure the flatness of the first part 101, the first part 101 is completely and safely covered by the first adhesive member 21, and in order to ensure the flatness of the second part 102, the back of the second part 102 is safely covered by the second adhesive member 22. The first adhesive member 21 and the second adhesive member 22 can be glue.

[0111] for Figure 4 and Figure 5 In the manner shown, the sides of the first supporting member 121 and the second supporting member 122 opposite to each other have a common edge that overlaps, and the common edge is a rotation reference. The common edge is parallel to the display device 11, and is the side edge of the first side surface C1 and the second side surface C2 close to the display device 11. The end of the first bonding member 21 away from the second bonding member 22 is the first end, and the end of the second bonding member 22 away from the first bonding member 21 is the second end.

[0112] If the plane condition is not met, the display device 11 has a first length between the first end and the second end, and the first length is the length within the first surface 111. The sum of the length from the first position on the first support member 121 to the end thereof facing the second support member 122 and the length from the second position on the second support member 122 to the end thereof facing the first support member 121 is the second length; the second length is greater than the first length. The first position is the position on the first support member 121 corresponding to the first end, and the second position is the position on the second support member 122 corresponding to the second end.

[0113] In this way, Figure 4 In the posture shown, the length between the two supporting members corresponding to the first end and the second end (i.e., the second length) is greater than the length between the first surface 111 corresponding to the first end and the second end (i.e., the first length), so when switching to Figure 5 In the posture shown, since the two support members have no deformation ability, they cannot be compressed, and their lengths remain unchanged, and they still have a second length between the corresponding first end and the second end.

[0114] The third portion 103 has a deformable capability, including that the third portion 103 has a first deformable property, and the first deformable capability includes that the third portion 103 can be bent and cannot be stretched. If the third portion 103 of the display device 11 cannot be stretched, the first length of the display device 11 will not change, and the first adhesive member 21 and the second adhesive member 22 need to be elastic and can be stretched to stretch toward the middle position of the display device 11, buffering the difference between the first length and the second length, so that the third portion 103 is tightened and straightened, and has better flatness.

[0115] The third part 103 has a deformable capability, including that the third part 103 has a second deformable property, and the third deformable capability includes that the third part 103 can be bent and stretched. If the third part 103 of the display device 11 can be stretched, the first adhesive member 21 and the second adhesive member 22 can be inelastic and cannot be stretched. The first length of the display device 11 increases to be equal to the second length due to the stretching of the third part 103, and is also pulled straight and has good flatness. Obviously, at this time, the first adhesive member 21 and the second adhesive member 22 can be elastic and can be stretched.

[0116] like Figure 4 As shown, the first bonding member 21 has a first distance L1 from the first side surface C1, and the second bonding member 22 has a second distance L2 from the second side surface C2. The first distance L1 and the second distance L2 correspond to the third portion 103 of the display device 11 having the deformable ability. If the plane condition is not met, the sum of the first distance L1 and the second distance L2 is greater than the length of the local portion. That is, Figure 4 In the posture shown, the sum of the lengths of the two support members corresponding to the third portion 103 is greater than the length of the third portion 103. Figure 5 In the posture shown, similarly to the above discussion, no matter whether the third portion 103 is elastic and can be stretched, the third portion 103 will be pulled straight, so that the display device 11 has better flatness.

[0117] like Fig.10 As shown, Fig.10A schematic diagram of the principle of a bonding support assembly provided in an embodiment of the present application, the bonding method includes: under the condition that the first support member 121 and the second support member 122 have a preset angle θ, the display device 11 is pressed by a roller 10, so that the first part 101 thereof is bonded and fixed to the first support member 121 by the adhesive member 21, and the second part 102 thereof is bonded and fixed to the second support member 122 by the adhesive member 22.

[0118] for Fig.10 In the manner shown, the back surface of the first part 101 is fixedly attached to the first supporting member 121 through the first adhesive member 21, and the back surface of the second part 102 is fixedly attached to the second supporting member 122 through the second adhesive member 22; the first adhesive member 121 and the first side surface C1 have a first distance L1; the second adhesive member 22 and the second side surface C2 have a second distance L2; the first distance L1 and the second distance L2 correspond to the third part 103 of the display device 11 with deformation ability; the first distance L1 and the second distance L2 are both a;

[0119] The preset angle is set to θ, 0<θ<π / 2, and the preset angle θ satisfies the following relationship:

[0120]

[0121] Among them, δ Xmax is the maximum deformation of the third portion 103.

[0122] Combine the following Fig.11 right Fig.10 When the planar condition is met, the display device described in the embodiment of the present application can solve the problem of poor flattening effect of the third part 103 due to bending deformation, and the principle of reducing the maximum height difference and the maximum slope change value is explained.

[0123] like Fig.11 As shown, Fig.11 This is a schematic diagram of the parameter design of a display device in an embodiment of the present application. Under the condition that the first support member 121 and the second support member 122 have a preset angle θ, the position M in the first support member 121 is set to be opposite to the end of the first adhesive member 21 close to the deformed third part 103, and the position N in the second support member 122 is set to be opposite to the end of the second adhesive member 22 close to the deformed third part 103. M is the midpoint of the surface of the first support member 121 facing the display device 11. N is the midpoint of the surface of the second support member 122 facing the display device 11. The center of the cotangent circle of the surface of the first support member 121 facing the display device 11 and the surface of the second support member 122 facing the display device 11 is O. Therefore Fig.10 The structure shown can be equivalent to Fig.11 The geometric model shown.

[0124] exist Fig.11 In the equation, MP=NP=a, the complementary angle of ∠MPN is θ, the central angle ∠MOP=θ, OM⊥MP, ON⊥PN, MN⊥OP. Based on the geometric model structure, the geometric relationship between the arc length and the central angle, the arc length L between MN (equivalent to the first length mentioned above) is expressed as follows:

[0125]

[0126] The length of MP+NP is 2a (equivalent to the second length mentioned above). 2a is greater than L.

[0127] If the display device 11 can be stretched, when Fig.10 When the first posture is flattened at the angle shown, and the plane condition is satisfied, the deformed third part 103 needs to have a maximum deformation amount δ Xmax , so that

[0128]

[0129] In order to ensure that the deformable third portion 103 is stretched and straightened when the plane angle is met, it is necessary to set the deformation of the display device 11 when the plane condition is met to be no greater than the maximum deformation δ Xmax , so we have:

[0130]

[0131] This method sets a preset angle to fit the support component on the display device 11, so that when the manufactured display device meets the planar condition, it can generate tension on the third part 103 based on the direct or indirect contact of the two support members, thereby tightening and straightening it to ensure its flatness.

[0132] like Fig.12 As shown, Fig.12 A schematic diagram of another display device provided in an embodiment of the present application when the display device meets a planar condition, the display device has a fixing component, the fixing component includes at least one first fixing element 20 connected to the display device 11, in the first posture, the first fixing element 20 provides a pulling force to the display device 11, under which the first part 101 and the second part 102 at least have a tendency to move away from each other.

[0133] exist Fig.12In the shown embodiment, the fixing assembly includes a first structural member 31 located on the side of the display device 11, the first fixing element 20 is located between the display device 11 and the first structural member 31, one end of the first fixing element 20 is connected to the end surface of the display device 11 facing the first structural member 31, and the other end is connected to the end surface of the first structural member 31 facing the display device 11, that is, the first fixing element 20 is located on the side of the display device 11.

[0134] In this mode, the first fixing element 20 has a deformable ability. In the first posture, the first fixing element 20 can change its length between the display device 11 and the first structural member 31 to provide a pulling force for the display device 11. The length direction of the first fixing element 20 can be set to be parallel to the arrangement direction of the three parts of the display device 11. Under this pulling force, the first part 101 and the second part 102 at least have a tendency to move away from each other and flatten in the arrangement direction. In other modes, the length direction can also be perpendicular to the arrangement direction and flattened in a direction perpendicular to the arrangement direction.

[0135] like Fig.13 As shown, Fig.13 A schematic diagram of another display device provided in an embodiment of the present application when the display device meets the plane condition, in this mode, the first structural member 31 can be arranged around the display device 11. A first fixing element 20 can be correspondingly arranged between at least a part of the side area of ​​the display device 11 and the first structural member 31 opposite thereto, so as to provide a pulling force parallel to the display device 11 to the display device 11 in the first posture, flatten the third portion 103 thereof, and thereby reduce the maximum height difference and the maximum slope change value in the third portion 103.

[0136] Based on the arrangement direction of the three parts in the display device 11 and the relative bending principle, when in the first posture, in the arrangement direction, the first fixing element 20 can be connected between the display device 11 and the first structural member 31 on one side of the display device 11, or the first fixing element 20 can be connected between the display device 11 and the first structural member 31 on opposite sides of the display device 11, so that the tension provided by the first fixing element 20 to the display device 11 is parallel to the arrangement direction, so that under a certain tension, the third part 103 can be flattened to the greatest extent.

[0137] It should be noted that Figure 4-Figure 13 A side view of the display device.

[0138] exist Fig.12 and Fig.13 Based on the embodiment, the display device can also be Fig.14 As shown, Fig.14A schematic diagram of another display device provided in an embodiment of the present application when the display device meets the planar condition, Fig.14 It is a top view of the display device facing the display side surface. In this embodiment, the display device 11 includes a first side surface and a second side surface opposite to each other. The two first fixing elements 20 are located between the first side surface of the display device 11 and the end surface of the first structural member 31 facing the first side surface, and fixedly connect the display device 11 and the first structural member 31. There are also two second fixing elements 40, which are located between the second side surface of the display device 11 and the end surface of the first structural member 31 facing the second side surface, and are used to fixly connect the display device 11 and the first structural member 31. The second fixing elements 40 do not have the deformation ability to change the length in the direction of the line connecting the first side surface and the second side surface.

[0139] The connection direction between the first side surface and the second side surface may be parallel to the arrangement direction of the three parts of the display device 11 or perpendicular to the arrangement direction. In order to increase the flattening effect of the pulling force on the third part, the connection direction is set parallel to the arrangement direction.

[0140] like Fig.15 As shown, Fig.15 A schematic diagram of another display device provided in an embodiment of the present application when the display device meets the planar condition, Fig.15 is a top view of the display device toward the display side surface, in this manner, Fig.14 The illustrated embodiment is different in that two first fixing elements 20 are provided on both the first side surface and the second side surface.

[0141] In one embodiment of the present application, the first fixing element 20 is an elastic element such as a spring element or a rubber element, but the present application is not limited to this. In other embodiments of the present application, the first fixing element 20 can also be an element such as a retractable rod, depending on the specific situation.

[0142] like Fig.16 As shown, Fig.16 A schematic diagram of another display device provided in an embodiment of the present application when the display device meets the planar condition, Fig.16It is a side view of the display device. In this embodiment, the fixing component includes a first support member 121 and a second support member 122 arranged on the back side of the display device 11 away from the display side surface, the first support member 121 is arranged opposite to the first part 101 on the back side, and the second support member 122 is arranged opposite to the second part 102 on the back side; the first support member 121 and / or the second support member 122 have a second deformation ability, and the second deformation ability includes the ability to change the length along a preset direction; wherein the preset direction satisfies a vertical condition with the display device 11 in the first posture.

[0143] The first support member 121 and the second support member 122 may be elastic rubber layers. There is a distance between the first support member 121 and the second support member 122. A first hard plate 31 is disposed on the side of the first support member 121 away from the display device 11, and a second hard plate 32 is disposed on the side of the second support member 122 away from the display device 11. The first hard plate 31 and the second hard plate 32 have no deformation ability, or have a deformation ability weaker than that of the first support member 121 and the second support member 122.

[0144] exist Fig.16 In the illustrated embodiment, in the first posture, the first hard plate 31 and the second hard plate 32 have a spacing, and in other embodiments, in the first posture, the first hard plate 31 and the second hard plate 32 can contact each other. In other embodiments, the first support member 121 and the second support member 122 can be provided with an integral hard plate on the side facing away from the display device 11.

[0145] like Fig.17 As shown, Fig.17 for Fig.16 The schematic diagram of the principle of buffering deformation of the support members in the display device shown in the figure during the bending deformation process is as follows: since the first support member 121 and the second support member 122 can change their lengths in a direction perpendicular to the display device 11, during the bending deformation process of the display device 11, the stress on the display device 11 can be buffered by changing their lengths, thereby avoiding excessive stretching of the third portion 103, and better flattening the third portion 103, thereby reducing its maximum height difference and maximum slope change value in the first posture.

[0146] The display device provided in the embodiment of the present application provides the same product standard for the display device and the folding screen to regulate the third part with deformation capability and the remaining plane parameters of the folded part.

[0147] Based on the above embodiment, another embodiment of the present application further provides a computing device, including:

[0148] Folding display screen; wherein the flatness of the folding area of ​​the folding display screen meets the following conditions: the height difference between the highest point and the lowest point of the fold is less than or equal to 0.25mm; the maximum degree of change in the slope of the fold section is less than or equal to 0.03. The structure of the computing device can be as follows Figure 1 In the display device shown, the folding area is the third part with deformation capability.

[0149] The display device is an electronic device with a foldable display screen and computing capabilities, such as a microcomputer.

[0150] Among them, the folding area corresponds to at least two scan lines; the scan line has multiple sampling points; the fold section is a section along the extension direction of the scan line; the highest point and the lowest point are two extreme value test points on the same scan line, the highest point is the sampling point with the maximum height, and the lowest point is the sampling point with the lowest height; the maximum degree of slope change of the fold section is the maximum slope change of the same scan line. As described in the above embodiment, the extension direction of the scan line can be parallel to the arrangement direction of the three parts in the folding screen, or it can be other directions.

[0151] In the embodiment of the present application, the wrinkles are a combination of all high and low undulating areas of the scan line corresponding to the wrinkle end surface.

[0152] When detecting the height difference and slope change of the folding screen, the detection method is as follows:

[0153] a), the folding screen can be flattened and placed on a marble platform. The marble platform is a calibrated marble platform that meets the national standard.

[0154] b) Scanning the folded part of the foldable screen in a linear manner by means of an altimeter, wherein the altimeter is a laser altimeter.

[0155] In this process, 9 scan lines can be taken to perform height scanning measurement. In the same scan line, the measurement compensation of two adjacent sampling points is no more than 0.5 mm, such as 0.5 mm.

[0156] In the direction perpendicular to the bending axis of the folding screen, the length Ls of the scan line is determined by the length Lf of the folding part that can be freely deformed in the folding device, and should satisfy Ls = Lf-5mm. The two ends of the scan line are symmetrical about the bending axis, and the ends of the scan line are 2.5mm away from the boundary of the sampling area. The length Ls is the projection length on the X-axis, not the actual bending extension length of the non-scan line.

[0157] In the direction parallel to the bending axis of the folding screen, the spacing Ws of the scan lines is determined as follows: taking 9 scan lines as an example, the 9 scan lines are sequentially the first scan line to the ninth scan line in the direction parallel to the bending axis of the folding screen, and the upper and lower edge scan lines are 1 mm away from the visible area, that is, the two outermost scan lines (the first scan line and the ninth scan line) are 1 mm away from the adjacent display side of the display side surface; then, the center of the distance between the two scan lines at the upper and lower edges is taken as the position of the fifth scan line, and then the upper edge scan line (the first scan line) and the center of the fifth scan line are taken as the position of the third scan line, and the lower edge scan line (the ninth scan line) and the center of the fifth scan line are taken as the position of the seventh scan line. Based on this de-centering method, and so on, the position length Ls of the second scan line, the fourth scan line, the sixth scan line and the eighth scan line is determined as the projection length on the X-axis, not the actual bending extension length of the non-scanning line. The spacing Ws of the scanning lines is determined based on the width of the folding screen parallel to the bending axis. For example, the Ws of a folding screen of one width is set to 2.5 mm, and the Ws of folding screens of other widths are set to other values.

[0158] c) Based on the scanning results, calculate the height difference △H and slope change of the scanning line:

[0159] △H=Hmax-Hmin

[0160]

[0161] Wherein, y represents the height position of the sampling point, that is, the position coordinate on the second coordinate axis Y, x represents the position in the scanning direction, that is, the position coordinate on the first coordinate axis X, and k is a positive integer, such as 15. The △H of the largest Sn among the 9 scanning lines represents the maximum height difference of the folding screen, and the largest S among the 9 scanning lines represents n Characterizes the maximum slope change of the folding screen.

[0162] At present, there is no unified standard for the folding screen technology of microcomputers. The technical solution of this application, taking into account normal display and human eye resolution, provides a product standard for the maximum degree of change in the height difference between the highest and lowest points of the folds and the slope of the fold cross section in computing devices that can be actually used. This standard can be used as a technical specification for folding screens of microcomputers, which is conducive to promoting the application of folding displays in the industry, promoting the innovation of display technology, and promoting the healthy development of the display industry.

[0163] In this specification, each embodiment is described in a progressive, parallel, or progressive and parallel manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the computing device disclosed in the embodiment, since it corresponds to the display device disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the relevant part of the computing device.

[0164] It should be noted that in the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0165] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0166] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display device, comprising: a display unit, the display unit including a first part, a second part, and a third part, at least the third part having a first deformation ability, the first deformation ability including the ability to cause the first part and the second part to change their relative angles, wherein the first part and the second part are located on opposite sides of the third part; wherein, after the display unit is bent and deformed based on the third part, in a first posture, the display unit satisfies a flat condition, and the display side surface of the third part satisfies the following conditions: The maximum height difference does not exceed 0.25 mm; The maximum slope change value does not exceed 0.03; wherein, the maximum height difference and the maximum slope change value are determined by the following method: There are multiple sets of sampling points in the display side surface of the third part, and each set of sampling points has multiple sampling points; in the same set of sampling points, the sampling points satisfy the collinear condition, and the spatial position parameters of the highest point and the lowest point among the sampling points are used to determine the maximum height difference, and the spatial position parameters of all sampling points are used to determine the maximum slope change value; the sampling points in the same set of sampling points correspond to the same scan line, and the spatial position parameters of the sampling points in each scan line are used to determine the maximum sampling height difference and the maximum sampling slope change value of the scan line; wherein, the maximum slope change value is determined based on all sampling slope change values, and the sampling slope change value is determined by, in each set of sampling points, determining a slope between the middle sampling point and the other two sampling points on its two sides among three different sampling points located on the same scan line, and taking the absolute value of the difference between the two slopes; the extending direction of the scan line is parallel to the arrangement direction of the three parts in the display unit.

2. The display device according to claim 1, wherein the maximum height difference is the maximum value of multiple maximum sampling height differences, and the maximum slope change value is the maximum value of multiple maximum sampling slope change values.

3. The display device according to claim 2, wherein the spatial position parameter comprises: a first position parameter and a second position parameter, the first position parameter being able to represent the position coordinate of the sampling point on the first coordinate axis X, the second position parameter being able to represent the position coordinate of the sampling point on the second coordinate axis Y, the first coordinate axis X and the second coordinate axis Y satisfying the perpendicular condition; in the first posture, the first coordinate axis X is parallel to the display side surface and parallel to the arrangement direction of the three parts in the display unit, the second coordinate axis Y is perpendicular to the display side surface; the scan line is parallel to the first coordinate axis X; in the same scan line, the maximum sampling height difference is the difference between the position coordinates of the highest point and the lowest point on the second coordinate axis Y; There are N sampling points in the scanning line, where N is a positive integer greater than 1. In the extending direction of the scanning line, these N sampling points are sequentially the 1st sampling point to the Nth sampling point; among them, for each sampling point from the (K + 1)th sampling point to the (N - K)th sampling point, a sampling slope change value is determined, where K is a set constant and K is an integer not less than 0 and less than N, and N is not less than 2K + 1; the spatial position parameter of the (i - K)th sampling point P i-K is (x i-K , y i-K ), the spatial position parameter of the ith sampling point P i is (x i , y i ), the spatial position parameter of the (i + K)th sampling point P i+K is (x i+K , y i+K ), and the sampling slope change value corresponding to the ith sampling point is:

4. The display device according to claim 1, wherein the display device has a fixing component, the fixing component is connected to the display device and is used for fixing the display device; in the first posture, the fixing component is used for applying an external force away from the second part to the first part and / or applying an external force away from the first part to the second part.

5. The display device according to claim 4, wherein the fixing component includes a first support member and a second support member disposed on the back surface of the display device facing away from the display side surface, the first support member is disposed opposite to the first part on the back surface, and the second support member is disposed opposite to the second part on the back surface; the first support member and the second support member do not have the ability to deform; if the first support member and the second support member satisfy the coplanar condition, the display side surface can satisfy the planar condition; wherein, after satisfying the coplanar condition, the first support member applies an external force away from the second part to the first part and / or the second support member applies an external force away from the first part to the second part; or, the fixing component includes at least one first fixing element connected to the display device, in the first posture, the first fixing element provides a pulling force to the display device, and under this pulling force, the first part and the second part at least have a tendency to move away from each other.

6. The display device according to claim 4, wherein the fixing component includes a first support member and a second support member disposed on the back surface of the display device facing away from the display side surface, the first support member is disposed opposite to the first part on the back surface, and the second support member is disposed opposite to the second part on the back surface; the first support member and / or the second support member has a second deformation ability, and the second deformation ability includes the ability to change the length along a preset direction; wherein, the preset direction satisfies a perpendicular condition with the display device in the first posture.

7. A computing device, comprising: a foldable display screen, including: a first part, a second part and a third part, at least the third part has a first deformation ability, and the first deformation ability includes the ability to change the relative angle between the first part and the second part, wherein the first part and the second part are located on opposite sides of the third part; wherein, when the foldable display screen is bent and then restored to the first posture, the flatness of the folding area of the foldable display screen satisfies the following conditions: the height difference between the highest point and the lowest point of the wrinkles is less than or equal to 0.25 mm; The maximum degree of change in the slope of the folded cross-section is less than or equal to 0.03; wherein, the maximum degree of change in the slope of the folded cross-section is the maximum slope change value of the same scan line; the maximum slope change value is determined based on all sampled slope change values, and the sampled slope change value is determined by, in each set of sampling points, determining a slope between the middle sampling point of three different sampling points on the same scan line and the other two sampling points on its two sides respectively, and taking the absolute value of the difference between the two slopes; the extending direction of the scan line is parallel to the arrangement direction of the three parts in the folding display screen.

8. The computing device according to claim 7, wherein the folding area corresponds to at least two scan lines; the scan line has a plurality of sampling points; the folded cross-section is a section along the extending direction of the scan line; The highest point and the lowest point are two extreme value test points on the same scan line.

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