CN112086032A - Display device and computing device - Google Patents

Display device and computing device Download PDF

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Publication number
CN112086032A
CN112086032A CN202011093044.5A CN202011093044A CN112086032A CN 112086032 A CN112086032 A CN 112086032A CN 202011093044 A CN202011093044 A CN 202011093044A CN 112086032 A CN112086032 A CN 112086032A
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display device
sampling
maximum
display
support
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苏跃峰
崔兆涛
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Lenovo Beijing Ltd
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Lenovo Beijing Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED

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Abstract

The technical scheme of the application discloses a display device and a computing device, and specifically specifies that a display side surface of a third part in the display device meets at least one of the following conditions for a display device with deformation capability and a folding display screen with a folding area: the maximum height difference is not more than 1 mm; the maximum gradient change value is not more than 0.3, and the folding area of the folding display screen definitely stipulates that the flatness of the folding area in the folding display screen meets the following conditions: the height difference between the highest point and the lowest point of the folds is less than or equal to 0.25 mm; the maximum degree of change of the gradient of the cross section of the fold is less than or equal to 0.03, and the display device and the folding screen have better flatness when being flattened.

Description

Display device and computing device
Technical Field
The application relates to the technical field of electronic equipment, in particular to display equipment and computing equipment.
Background
With the continuous development of science and technology, more and more electronic devices with display functions are widely applied to daily life and work of people, bring great convenience to the daily life and work of people, and become an indispensable important tool for people at present.
The main component of the electronic device implementing the display function is a display screen. The flexible display screen that can buckle is a novel display screen, and at present, flexible display screen technical development is perfect, has been can be on a large scale in commercial and many electronic equipment.
Because flexible display screen of flexible is a novel display screen, electronic equipment based on flexible display screen, through buckling the back, has the unevenness problem under the exhibition flat state.
Disclosure of Invention
In view of this, the present application provides a display device and a computing device, and the scheme is as follows:
a display device, comprising:
a display device comprising a first portion, a second portion and a third portion, at least the third portion having a first deformation capability comprising the ability to allow the first and second portions to change relative angles, wherein the first and second portions are on opposite sides of the third portion;
wherein, in the first posture, the display side surface of the third portion satisfies at least one of the following conditions:
the maximum height difference is not more than 1 mm;
the maximum gradient change value is not more than 0.3;
wherein, in the first posture, the display device meets a plane condition.
Preferably, in the above display apparatus, the condition that the display-side surface of the third portion satisfies includes:
a plurality of sampling points are arranged in the surface of the display side of the third part, space position parameters of the highest point and the lowest point in the sampling points are used for determining the maximum height difference, and space position parameters of all the sampling points are used for determining the maximum gradient change value;
or, the third portion has a plurality of sets of sampling points within the display side surface thereof, the sets of sampling points having a plurality of sampling points; in the same sampling point set, the sampling points meet a collinear condition, spatial position parameters of the highest point and the lowest point in the sampling points are used for determining the maximum height difference, and spatial position parameters of all the sampling points are used for determining the maximum gradient change value;
or, the display side of the third portion has a plurality of sets of sampling points having a plurality of sampling points; in the same sampling point set, the sampling points are located in a convex area and a concave area which are adjacent, the spatial position parameters of the highest point and the lowest point in the sampling points are used for determining the maximum height difference, and the spatial position parameters of all the sampling points are used for determining the maximum gradient change value.
Preferably, in the display device, if the sampling points in the same sampling point set satisfy a collinear condition, the sampling points in the same sampling point set correspond to the same scanning line, and a spatial position parameter of the sampling point in each scanning line is used to determine a maximum sampling height difference and a maximum sampling gradient change value of the scanning line;
wherein the maximum height difference is a maximum value of the plurality of maximum sampling height differences, and the maximum gradient change value is a maximum value of the plurality of maximum sampling gradient change values.
Preferably, in the above display apparatus, the spatial position parameter includes: the device comprises a first position parameter and a second position parameter, wherein the first position parameter can represent the position coordinate of the sampling point on a first coordinate axis X, the second position parameter can represent the position coordinate of the sampling point on a second coordinate axis Y, and the first coordinate axis X and the second coordinate axis Y meet a vertical condition; in the first posture, the first coordinate axis X and the display side surface meet a parallel condition, the first coordinate axis X and the arrangement direction of three parts in the display device meet a parallel condition, 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 the parallel condition;
in the same scanning line, the maximum sampling height difference is the difference value of the position coordinates of the highest point and the lowest point on the second coordinate axis Y;
the scanning line is provided with N sampling points, N is a positive integer larger than 1, and the N sampling points are sequentially from a 1 st sampling point to an Nth sampling point in the extending direction of the scanning line; each sampling point from the K +1 sampling point to the N-K sampling point is used for determining a sampling gradient 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; sample point P of i-Ki-KIs empty ofThe meta position parameter is (x)i-K，yi-K) Ith sample point PiHas a spatial position parameter of (x)i，yi) I + K th sampling point Pi+KHas a spatial position parameter of (x)i+K，yi+K) And the sampling gradient change value corresponding to the ith sampling point is as follows:
Figure BDA0002722800390000031
preferably, in the above display apparatus, the maximum height difference is not more than 0.25 mm; the maximum gradient change value is not more than 0.03.
Preferably, in the above display apparatus, the display apparatus has a fixing component, and the fixing component is connected with the display device and is used for fixing the display device; in the first posture, the fixing component is used for applying external force far away from the second part to the first part and/or applying external force far away from the first part to the second part.
Preferably, in the above display apparatus, the fixing assembly includes a first support member and a second support member provided on a back surface of the display device facing away from the display side surface, the first support member being provided opposite to the first portion on the back surface, the second support member being provided opposite to the second portion on the back surface; the first support part and the second support part do not have deformation capacity; enabling the display side surface to satisfy a coplanar condition if the first support and the second support satisfy the planar condition; wherein, after the coplanarity condition is satisfied, the first support applies an external force to the first portion away from the second portion and/or the second support applies an external force to the second portion away from the first portion.
Or, the fixing assembly comprises at least one first fixing element connected with the display device, and in the first posture, the first fixing element provides a pulling force for the display device, and in the pulling force, the first part and the second part at least have a tendency to move away from each other.
Preferably, in the above display apparatus, the fixing assembly includes a first support member and a second support member provided on a back surface of the display device facing away from the display side surface, the first support member being provided opposite to the first portion on the back surface, the second support member being provided opposite to the second portion on the back surface; the first support and/or the second support are provided with a second deformability comprising an ability to change length in a preset direction;
and the preset direction and the display device in the first posture meet a vertical condition.
The present invention also provides a computing device comprising:
folding the 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 folds is less than or equal to 0.25 mm;
the maximum degree of the gradient change of the cross section of the folds is less than or equal to 0.03.
Preferably, in the above computing device, the folding region corresponds to at least two scan lines; the scanning line is provided with a plurality of sampling points; the fold section is a tangent plane along the extension direction of the scanning line;
the highest point and the lowest point are two extreme value test points on the same scanning line;
the maximum degree of the gradient change of the cross section of the fold is the maximum gradient change of the same scanning line.
As can be seen from the above description, in the display apparatus and the computing apparatus provided in the present application, for the display device having the deformation capability and the foldable display screen having the folding area, it is explicitly specified that the display-side surface of the third portion in the display device satisfies at least one of the following conditions: the maximum height difference is not more than 1 mm; the maximum gradient change value is not more than 0.3, and the folding area of the folding display screen definitely stipulates that the flatness of the folding area in the folding display screen meets the following conditions: the height difference between the highest point and the lowest point of the folds is less than or equal to 0.25 mm; the maximum degree of change of the gradient of the cross section of the fold is less than or equal to 0.03, and the display device and the folding screen have better flatness when being flattened.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in related arts, the drawings used in the description of the embodiments or prior arts will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
The structures, proportions, and dimensions shown in the drawings and described in the specification are for illustrative purposes only and are not intended to limit the scope of the present disclosure, which is defined by the claims, but rather by the claims, it is understood that these drawings and their equivalents are merely illustrative and not intended to limit the scope of the present disclosure.
Fig. 1 is a top view of a display device according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram illustrating a principle of calculating a maximum sampling height of a scan line according to the present application;
FIG. 3 is a schematic diagram illustrating a calculation principle of a maximum sampling gradient variation value of a scan line according to the present application;
fig. 4 is a schematic diagram of a display apparatus provided in an embodiment of the present application when a display device does not satisfy a plane condition;
fig. 5 is a schematic diagram of a display apparatus provided in an embodiment of the present application when a display device satisfies a plane condition;
fig. 6 is a schematic diagram of another display apparatus provided in an embodiment of the present application when a display device does not satisfy a plane condition;
fig. 7 is a schematic diagram of another display apparatus provided in an embodiment of the present application when a display device satisfies a plane condition;
fig. 8 is a schematic diagram of a display apparatus according to an embodiment of the present application when a display device does not satisfy a plane condition;
fig. 9 is a schematic diagram of a display apparatus according to an embodiment of the present application when a display device satisfies a plane condition;
FIG. 10 is a schematic diagram of a conformable support assembly according to an embodiment of the present disclosure;
FIG. 11 is a schematic diagram of a design of parameters of a display device according to an embodiment of the present application;
fig. 12 is a schematic diagram of a display apparatus according to an embodiment of the present application when a display device satisfies a plane condition;
fig. 13 is a schematic diagram of a display apparatus according to an embodiment of the present application when a display device satisfies a plane condition;
FIG. 14 is a top view of the display device facing the display side surface;
fig. 15 is a schematic diagram of a display apparatus according to an embodiment of the present application when a display device satisfies a plane condition;
fig. 16 is a schematic diagram of a display apparatus according to an embodiment of the present application when a display device satisfies a plane condition;
fig. 17 is a schematic view illustrating a buffer deformation of a support member during a bending deformation process in the display apparatus of fig. 16.
Detailed Description
Embodiments of the present application will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the application are shown, and in which it is to be understood that the embodiments described are merely illustrative of some, but not all, of the embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, fig. 1 is a top view of a display device provided in the present application, where the display device includes: a display device 11, said display device 11 comprising a first portion 101, a second portion 102 and a third portion 103, at least said third portion 103 having a first deformation capability comprising the ability to allow said first portion 101 and said second portion 102 to change relative angle, wherein said first portion 101 and said second portion 102 are located on opposite sides of said third portion 103, i.e. said third portion 103 is located between said first portion 101 and said second portion 102.
Wherein, in the first posture, the display side surface of the third portion 103 satisfies at least one of the following conditions: the maximum height difference is not more than 1 mm; the maximum slope change value does not exceed 0.3.
Wherein, in the first posture, the display device meets a plane condition. In the technical scheme, the display device meets the requirement of representing the coplanarity or approximate coplanarity of three parts in the display device under the planar condition.
In the embodiment of the present application, the flatness parameter of the display device satisfies the above condition, and the flatness parameter includes: maximum height difference and maximum slope change value. Therefore, the display device has a good plane display effect, and the problem of unevenness of user perception caused by overlarge flatness parameters can be avoided.
Under the first gesture, if the maximum height difference is not more than 1mm, the display device meeting the plane condition can have a better plane display effect, and the influence on the display effect caused by the large height difference due to bending is avoided. In addition, within the maximum height difference range, the macroscopic effect cannot easily perceive the height change of the third portion 103 caused by bending, so that the obvious height difference can be prevented from being perceived by human eyes. The planar display effect refers to a display effect through a planar display device, and the displayed image may be a 2D image or a 3D image. And for the display device integrated with the touch function, the phenomenon that the user touch operation can perceive obvious height change can be avoided.
Under the first gesture, if the maximum gradient change value is not more than 0.3, the display device meeting the plane condition can have a better plane display effect, and the influence on the display effect caused by the large gradient change value due to bending is avoided. In addition, within the maximum gradient change value range, the macroscopic visual effect cannot easily sense the gradient change of the third part 103 caused by bending, so that the human eyes can be prevented from sensing the obvious gradient change. And for the display device integrated with the touch function, the phenomenon that the touch operation of a user can perceive obvious fluctuation can be avoided.
It should be noted that fig. 1 illustrates the display device as a full-screen mobile phone, and obviously, the display device is not limited to a mobile phone, and may also be an electronic device with a display function, such as a tablet computer, a notebook computer, an all-in-one computer, a television, and an intelligent wearable device. In addition, the dotted line between two adjacent portions is only for convenience of showing the division of the regions of the different portions, and the above-mentioned dotted line for distinguishing the two adjacent portions does not exist between the two adjacent portions in the actual product.
In the display apparatus according to the embodiment of the present application, the range of the maximum height difference and/or the maximum gradient change value in the display side surface of the third portion 103 in the display device is specified, and the display device has better flatness when being flattened.
In the embodiment of the present application, the conditions satisfied by the display side surface of the third portion 103 include the following three ways:
the first mode is as follows:
the third portion 103 has a plurality of sampling points in the display side surface, and spatial position parameters of the highest point and the lowest point among the sampling points are used for determining the maximum height difference, and spatial position parameters of all the sampling points are used for determining the maximum gradient change value.
In the first manner, the maximum height difference and the maximum gradient change value may be determined based on a plurality of sampling points determined within the display side surface of the third portion 103. The sampling point can be arbitrarily chosen and determined in said third portion 103 based on requirements. The plurality of sampling points may be arranged in an array or randomly in the third portion 103. The sampling points are used for acquiring spatial position parameters of corresponding positions in the third portion 103, visual identification patterns are not arranged in the third portion 103 to show the positions of the sampling points, and the sampling points can be determined based on the sampling positions of the detection equipment corresponding to the third portion 103.
By the first way, the highest point and the lowest point are determined in all the sampling points, and the maximum height difference of the display side surface of the third portion 103 can be determined based on the spatial position parameters of the highest point and the lowest point. In this manner, after the highest point and the lowest point are determined, the maximum height difference can be determined only by one subtraction operation.
In a first way, all of the sampling points may be divided into a plurality of test groups, each test group having three different sampling points. And the three sampling points in the same test group are positioned on the same plane line, and in the first posture, the plane line is positioned in a plane vertical to the display device. The extending direction of the planar line may be set arbitrarily based on the requirement, and may be the arrangement direction of the three portions in the display device, or may be any other extending direction in the third portion 103. The third portion 103 does not have visible identification patterns to show the position of the plane lines used to group the sample points for calculating the slope change.
The sampling points in different test groups are not completely the same, if one test group comprises three ABC sampling points, other test groups at most have two of the three ABC sampling points, or the sampling points in different test groups are completely different, and at the moment, one sampling point only belongs to one test group. In the mode, for three sampling points in a test group, on a corresponding plane line, the middle sampling point can respectively determine a slope with the other two sampling points on two sides of the middle sampling point, and the absolute value of the difference value of the two slopes can determine the sampling slope change value of the test group. The maximum slope change value of the display side surface of the third portion 103 can be determined based on all the sampled slope change values. For example, the maximum sampling slope variation value may be selected as the maximum slope variation value of the display-side surface of the third section 103.
The second mode is as follows:
the third portion has a plurality of sets of sampling points within a display side surface thereof, the sets of sampling points having a plurality of sampling points; in the same sampling point set, the sampling points meet a collinear condition, the spatial position parameters of the highest point and the lowest point in the sampling points are used for determining the maximum height difference, and the spatial position parameters of all the sampling points are used for determining the maximum gradient change value.
In the second way, the maximum height difference and the maximum gradient change value may be determined based on a plurality of sets of sampling points within the display side surface of the third portion 103. All sampling points in the same sampling point set meet a collinear condition, namely the sampling points in the same sampling point set are located on the same scanning line, and the scanning line is located in a plane perpendicular to the display device in the first posture. The extending direction of the scan line may be set arbitrarily according to the requirement, may be the arrangement direction of the three portions in the display device, and may also be any other extending direction in the third portion 103. The extension directions of the scanning lines corresponding to the sampling point sets may be the same, that is, the planes perpendicular to the display device and corresponding to any two scanning lines are parallel to each other, or the extension directions of the scanning lines corresponding to the sampling point sets may be different, that is, at most, the planes perpendicular to the display device and corresponding to any two scanning lines are parallel to each other. This way, the spatial position parameters of a plurality of sampling points are sequentially collected on the extending path of the display side surface of the third portion 103 corresponding to the scan line.
In the second mode, each sampling point set determines the maximum sampling height difference through the highest point and the lowest point corresponding to the sampling point set, and determines the maximum sampling gradient change value through the scanning line corresponding to the sampling point set. The maximum height difference of the third portion 103 may be the maximum of a plurality of the maximum sampling height differences determined for each of the sets of sample points.
Generally, for the bendable display device, when bending is performed, the relative angle of the first portion 101 and the second portion 102 is changed by the bending deformation of the third portion 103. Therefore, when the display device is bent and restored to the first posture, the maximum height difference and the maximum gradient change value of the display side surface of the third portion 103 should be located on a scanning line parallel to the arrangement direction of the three portions, so in the embodiment of the present application, if the sampling points in the same sampling point set satisfy a collinear condition, the sampling points in the same sampling point set correspond to the same scanning line, spatial position parameters of a plurality of sampling points on the scanning line can be sequentially collected based on the extending direction of the scanning line in a scanning manner, and the spatial position parameters of the sampling points in each scanning line are used for determining the maximum sampling height difference and the maximum sampling gradient change value of the scanning line.
Each scanning line can correspondingly determine a maximum sampling height difference and a maximum sampling gradient change value. In a second mode, the maximum height difference is a maximum value of the plurality of maximum sampling height differences determined for each set of sampling points, and the maximum gradient change value is a maximum value of the plurality of maximum sampling gradient change values determined for each set of sampling points.
Fig. 2 is a schematic diagram illustrating a principle of calculating a maximum sampling height of a scan line according to the present invention, and fig. 2 shows a plurality of sampling points 104 located in the same scan line. The spatial location parameters include: a first position parameter X, which is able to characterize the position coordinates of the sampling point 104 on a first coordinate axis X, and a second position parameter Y, which is able to characterize the position coordinates of the sampling point 104 on a second coordinate axis Y. And the first coordinate axis X and the second coordinate axis Y meet the vertical condition to form a plane rectangular coordinate system.
In the first attitude, fig. 2 is a partially enlarged view of one scanning line of the third portion 103 in the display device, and in macroscopic view, the display-side surfaces of the three portions of the display device are approximately coplanar. In the first posture, the first coordinate axis X and the display side surface meet a parallel condition, the first coordinate axis X and the arrangement direction of three parts in the display device meet a parallel condition, 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 the parallel condition. In the embodiments of the present application, the condition of parallel is that two objects are parallel or approximately parallel, and the condition of perpendicular is that two objects are perpendicular or approximately perpendicular.
In the scanning line shown in fig. 2, the highest point in the sampling points 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 may be a vertex of an adjacent convex region and a valley point of a concave region, respectively, and in other ways, the two may also be a vertex of an adjacent convex region and a valley point of a concave region, which are not adjacent to each other. The highest point A has a height Hmax relative to the reference surface S1, and the lowest point B has a height Hmin relative to the reference surface S1. In the same scanning 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 that the maximum sampling height difference Δ H corresponding to the scanning line is Hmax-Hmin. The origin of coordinates may be set to be located at reference plane S1, Hmin being negative and Hmax being positive. The first portion 101 and the second portion 102 may not be bent, and a plane where the first portion and the second portion are located in the first posture may be used as the reference plane. The position of the reference surface S1 may be set based on the demand, and other planes parallel to the display side surface in the first posture may be set as the reference surface.
In the embodiment shown in fig. 2, the plane on which the display device is in the first posture three-part initial flat state is taken as the zero point position of the second coordinate axis Y, and in other embodiments, the position of the acquisition device for acquiring the spatial position parameter may be taken 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 requirements, and different planes parallel to the display device are used as reference surfaces, and the relative position of each sampling point 104 in the scanning line is not changed, so that the calculation results of the maximum sampling height difference and the maximum sampling gradient change value are not influenced. The slope of the scan line may be characterized by a tangent line L0 at its various locations.
The number of sampling points and the step size in the scanning line can be set based on requirements. This is not particularly limited in the embodiments of the present application.
As shown in fig. 3, fig. 3 is a schematic diagram of a calculation principle of a maximum sampling gradient variation value of a scanning line in the present application, where N sampling points 104 are set in the scanning line, where N is a positive integer greater than 1, and in an extending direction of the scanning line (a direction parallel to a first coordinate axis X), the N sampling points 104 are sequentially a 1 st sampling point P1To the Nth sampling point PN. Wherein, the K +1 th sampling point PK+1To the Nth-K sampling point PN-KEach sampling point is used for determining a sampling gradient 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; ith sample point PiThe corresponding sampling gradient change value is equal to the first gradient k1And a second slope k2I is a positive integer not less than K +1 and not more than N-K, the first gradient K1Is the ith sampling point PiAnd the ith-K sampling point Pi-KA slope in an XY coordinate system, the second slope k2Is the i + K th sampling point Pi+KAnd the ith sampling point PiSlope in XY coordinate system.
Setting the i-K sampling point Pi-KHas a spatial position parameter of (x)i-K，yi-K) Ith sample point PiHas a spatial position parameter of (x)i，yi) I + K th sampling point Pi+KHas a spatial position parameter of (x)i+K，yi+K) Then the first gradient k1And the second slope k2Respectively as follows:
Figure BDA0002722800390000131
Figure BDA0002722800390000132
so the ith sampling point PiCorresponding sampling gradient change value SiComprises the following steps:
Si＝|k1-k2|
if K is set to 15 and i is set to n, the sample gradient change value Sn is:
Figure BDA0002722800390000133
if the step length of two adjacent sampling points in the same scanning line on the first coordinate axis X is set to be 0.5mm, then the following steps are provided:
Figure BDA0002722800390000134
in the second mode, each scanning line can determine the corresponding maximum sampling height difference based on the highest point and the lowest point of the scanning line and can correspond to the K +1 th sampling point PK+1To the Nth-K sampling point PN-KN-2K sampling slope change values are determined, and the maximum value of the N-2K sampling slope change values can be selected as the maximum sampling slope change value of the scanning line.
The third mode is as follows:
the display side of the third portion has a plurality of sets of sampling points having a plurality of sampling points; in the same sampling point set, the sampling points are located in a convex area and a concave area which are adjacent, the spatial position parameters of the highest point and the lowest point in the sampling points are used for determining the maximum height difference, and the spatial position parameters of all the sampling points are used for determining the maximum gradient change value.
In a third mode, each sampling point set corresponds to a three-dimensional fluctuation region, and the fluctuation region comprises a three-dimensional convex region and a three-dimensional concave region which are adjacent to each other. Each set of sampling points may determine a maximum sampling height difference equal to the height difference between the highest and lowest points in the set of sampling points. Each set of sampling points may determine a maximum sampling slope change value. For the set of sampling points, the maximum sampling slope change value may be determined as in the first way.
In the first mode, the highest point is a sampling point with the largest second position parameter, the lowest point is a sampling point with the smallest second position parameter, and one or more of the highest point and the lowest point can be provided. In the second and third modes, in the same sampling point set, the highest point is the sampling point having the largest second position parameter in the sampling point set, the lowest point is the sampling point having the smallest second position parameter in the sampling point set, and there may be one or more highest points and one or more lowest points.
In the embodiment of the present invention, the maximum height difference may be further set not to exceed 0.25 mm; the maximum gradient change value is not more than 0.03. Under the first gesture, when the demonstration side surface of third part 103 satisfies maximum altitude difference is no longer than 0.25mm, and satisfies when the maximum grade change value is no longer than 0.03, can make display device have higher plane display effect, avoids influencing display effect owing to have great altitude difference and the grade change value that buckles and lead to, and macroscopic view effect is difficult for perception third part 103 is owing to the altitude variation and the grade change that buckle leads to, avoids the human eye can perceive obvious altitude difference and grade change. Within this maximum height difference and maximum slope variation range, it may be extremely difficult for a user to visually and/or tactilely perceive the change in elevation of the third portion.
The display equipment provided by the embodiment of the application is provided with a fixing component, wherein the fixing component is connected with 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 far away from the second part 102 to the first part 101 and/or applying an external force far away from the first part 101 to the second part 102, so that the third part 103 has smaller maximum height difference and maximum gradient change value in the first posture of the display device.
As shown in fig. 4 and 5, fig. 4 is a schematic view of a display apparatus provided in an embodiment of the present application when a display device does not satisfy a plane condition, and fig. 5 is a schematic view of a display apparatus provided in an embodiment of the present application when a display device satisfies a plane condition, in a manner that the display apparatus has a fixing assembly 12, the fixing assembly 12 includes a first supporting member 121 and a second supporting member 122 disposed on a back surface of the display device 11 facing away from a display side surface, the first supporting member 121 is disposed opposite to the first portion 101 on the back surface, and the second supporting member 122 is disposed opposite to the second portion 102 on the back surface; the first support 121 and the second support 122 have no deformation capability; if the first support 121 and the second support 122 satisfy the coplanar condition, the display device 11 can be made to satisfy the planar condition.
Wherein, after the coplanar condition is satisfied, the first support 121 applies an external force to the first portion 101 away from the second portion 102 and/or the second support 122 applies an external force to the second portion 102 away from the first portion 101. The display device 11 has a first surface 111 and a second surface 112 opposite to each other, the first surface 111 being a display side surface, and the second surface 112 being a back surface opposite to the display side back surface. The first support 121 and the second support 122 apply external forces to the first portion 101 and the second portion 102 away from each other, and based on this, the third portion 103 will be subjected to two opposite pulling forces, so that the third portion 103 can be flattened after the planar condition is satisfied, so that the third portion 103 has a smaller maximum height difference and a smaller maximum gradient change value, and has better flatness.
In the display device, at least the third portion 103 can be bent, so that the third portion 103 is bent when the first support 121 and the second support 122 rotate relatively. The first support 121 corresponds to the first portion 101 and corresponds to a portion of the third portion 103, and the second support 122 corresponds to the second portion 102 and corresponds to another portion of the third portion 103. The first support 121 and the second support 122 satisfying the coplanar condition include that a surface of the first support 121 facing the first portion 101 and a surface of the second support 122 facing the second portion 102 are flush, or approximately flush. The display device 11 satisfying the plane condition includes that the first portion 101, the second portion 102 and the third portion 103 are located on the same plane, or approximately located on the same plane.
If the plane condition is satisfied, the first support 121 and the second support 122 are abutted, and in the position where the first support 121 and the second support 122 are abutted, the first support 121 applies a thrust force to the second support 122 toward the second support 122, and the second support 122 applies a thrust force to the first support 121 toward the first support 121, so that the first support 121 and the second support 122 have a mutual pressing thrust force therebetween, and the thrust force can cause the first support 121 to apply an external force to the first portion 101 away from the second portion 102, and cause the second support 122 to apply an external force to the second portion away from the first portion 101. The butting means that objects are in direct or indirect contact and have mutual thrust.
In the manner shown in fig. 4 and 5, the first side C1 of the first support 121 is disposed opposite to the second side C2 of the second support 122; the side of the first side surface C1 close to the display device 11 and the side of the second side surface C2 close to the display device 11 satisfy a common edge overlapping condition, and the first side surface C1 and the second side surface C2 can be based on the overlapped two edges as a rotation reference. Both sides of the overlap are parallel to the display device 11. If the first support 121 and the second support 122 satisfy the coplanar condition, the first side C1 is in relatively coincident abutment with the second side C2. Wherein, the meeting the common edge coincidence condition comprises: the side of the first side C1 parallel to and proximate to the display device 11 coincides with or approximately coincides with the side of the second side C2 parallel to and proximate to the display device 11 such that the support member 12 can be a rotational reference based on the two coinciding abutting positions.
In the display device shown in fig. 4 and 5, if the first surface 111 satisfies the plane condition, the first side surface C1 and the second side surface C2 coincide and are in direct contact abutment.
As shown in fig. 6 and 7, fig. 6 is a schematic diagram of another display apparatus provided in the embodiment of the present application when a display device does not satisfy a plane condition, and fig. 7 is a schematic diagram of another display apparatus provided in the embodiment of the present application when the display device satisfies the plane condition. In this embodiment, the first support 121 and the second support 122 are in contact with each other via a rotating shaft 13, and both are relatively rotatable based on the rotating shaft. At this time, the first side surface C1 and the second side surface C2 may be concave curved surfaces respectively fitted to the rotation shaft 13, so that both the first supporting member 121 and the second supporting member 122 can rotate based on the rotation shaft 13.
As shown in fig. 8 and 9, fig. 8 is a schematic diagram of a display apparatus provided in an embodiment of the present application when a display device does not satisfy a plane condition, and fig. 9 is a schematic diagram of a display apparatus provided in an embodiment of the present application when a display device satisfies a plane condition. In this manner, the first support 121 and the second support 122 are abutted by the elastic component 14, the elastic component 14 is compressed between the first support 121 and the second support 122, the elastic component 14 can provide an elastic force for the first support 121 to move away from the second support 122, the elastic component 14 can provide an elastic force for the second support 122 to move away from the first support 121, and the elastic component 14 can be bent, so that the display side surface of the first portion 101 and the display side surface of the second portion 102 are relatively bent. At this time, the first side C1 and the second side C2 may be flat surfaces opposite to the elastic member 14 or concave curved surfaces surrounding the ends of the elastic member. The elastic component 14 may be a spring component or a gooseneck, which is stretchable, bendable, and compressible and has a compression resilience.
The first portion 101 and the second portion 102 are switchable between a first posture and a second posture by changing relative angles. Wherein, in the second posture, a display side surface of the first portion 101 and a display side surface of the second portion 102 satisfy a relative condition. The satisfying of the relative condition includes: the display side surface of the first portion 101 and the display side surface of the second portion 102 are relatively parallel or approximately parallel, and at this time, the first portion 101 and the second portion 102 are relatively covered towards the display side surface. The third portion 103 of the display device 11 can be bent toward the display side surface based on the rotation of the two supports of the support member 12, changing the relative angle of the display side surface of the first portion 101 and the display side surface of the second portion 102. In the first posture, the display side surface of the first portion 101 and the display side surface of the second portion 102 satisfy the plane condition.
In the display device according to the embodiment of the application, the back surface of the first portion 101 is attached and fixed to the first support 121 by a first adhesive member 21, and the back surface of the second portion 102 is attached and fixed to the second support a2 by a second adhesive member 22. In order to ensure the flatness of the first portion 101, the first portion 101 is provided with complete security covered by the first adhesive 21, and in order to ensure the flatness of the second portion 102, the back side of the second portion 102 is provided with security covered by the second adhesive 22. The first adhesive member 21 and the second adhesive member 22 may be glue.
In the manner shown in fig. 4 and 5, the sides of the first support member 121 opposite to the second support member 122 have a common edge which coincides with the side of the display device 11 and is parallel to the display device 11, and the first side C1 and the second side C2 are close to the side of the display device 11, with the common edge becoming a rotation reference. The end of the first adhesive member 21 away from the second adhesive member 22 is a first end, and the end of the second adhesive member 22 away from the first adhesive member 21 is a second end.
If the plane condition is not satisfied, the display device 11 has a first length between the first end and the second end, and the first length is a length within the first surface 111. The sum of the length from the first position on the first support 121 to the end facing the second support 122 and the length from the second position on the second support 122 to the end facing the first support 121 is a second length; the second length is greater than the first length. The first position is a position on the first support 121 corresponding to the first end, and the second position is a position on the second support 122 corresponding to the second end.
Thus, in the posture shown in fig. 4, the length (i.e., the second length) between the first end and the second end of the two supporting members is greater than the length (i.e., the first length) between the first end and the second end of the first surface 111, so when the posture shown in fig. 5 is switched, the two supporting members cannot be compressed because of no deformation capability, the length is not changed, and the second length is still between the first end and the second end.
The third portion 103 having a deformability comprising the third portion 103 having a first deformability comprising the ability of the third portion 103 to be bent and not stretched. If the third portion 103 of the display device 11 cannot be stretched and the first length of the display device 11 does not change, it is necessary to make the first adhesive member 21 and the second adhesive member 22 have elasticity and can be stretched to stretch toward the middle of the display device 11, so as to buffer the difference between the first length and the second length, thereby making the third portion 103 be stretched tightly and smoothly.
The third portion 103 having the ability to deform comprises the third portion 103 having a second deformation property, and the third deformation ability comprises the ability of the third portion 103 to bend and to be stretched. If the third portion 103 of the display device 11 can be stretched, the first adhesive member 21 and the second adhesive member 22 may not be elastic and can not be stretched, and the first length of the display device 11 is increased to be equal to the second length due to the stretching of the third portion 103, and is also pulled straight, thereby having better flatness. Obviously, at this time, the first adhesive member 21 and the second adhesive member 22 may have elasticity and be capable of being stretched.
As shown in fig. 4, the first adhesive member 21 has a first distance L1 from the first side C1, the second adhesive member 22 has a second distance L2 from the second side C2, and the first distance L1 and the second distance L2 correspond to the third portion 103 of the display device 11 having the deformation capability; if the plane condition is not satisfied, the sum of the first distance L1 and the second distance L2 is greater than the length of the part. That is, in the position shown in fig. 4, the sum of the lengths of the two supporting members corresponding to the third portion 103 is greater than the length of the third portion 103, so that when the position shown in fig. 5 is in the same manner as discussed above, the third portion 103 will be pulled straight to make the display device 11 have better flatness regardless of whether the third portion 103 has elasticity to be stretched.
As shown in fig. 10, fig. 10 is a schematic view of a principle of a fitting support assembly provided in an embodiment of the present application, and a fitting method includes: under the condition that the first supporting member 121 and the second supporting member 122 have the preset angle θ, the display device 11 is pressed by the roller 10, so that the first portion 101 thereof is adhesively fixed by the adhesive member 21 and the first supporting member 121, and the second portion 102 thereof is adhesively fixed by the adhesive member 22 and the second supporting member 122.
With respect to the manner shown in fig. 10, the back surface of the first portion 101 is attached and fixed to the first support 121 by a first adhesive member 21, and the back surface of the second portion 102 is attached and fixed to the second support 122 by a second adhesive member 22; the first adhesive member 121 has a first distance L1 from the first side C1; the second adhesive 22 is a second distance L2 from the second side C2; the first distance L1 and the second distance L2 correspond to the third portion 103 of the display device 11 having the capability of deformation; both the first distance L1 and the second distance L2 are a;
setting a preset angle theta, wherein theta is more than 0 and less than pi/2, and the preset angle theta satisfies the following relation:
Figure BDA0002722800390000201
wherein the content of the first and second substances,Xmaxis the maximum amount of deformation of the third portion 103.
Fig. 10 is described with reference to fig. 11, and the display device according to the embodiment of the present application can solve the problem that the flattening effect of the third portion 103 is poor due to bending deformation when the plane condition is satisfied, and a principle of reducing the maximum height difference and the maximum gradient variation value is described.
As shown in fig. 11, fig. 11 is a schematic diagram of parameter design of a display device according to an embodiment of the present application, where a position M of the first support 121 is set to be opposite to one end of the first adhesive member 21 close to the deformed third portion 103, and a position N of the second support 122 is set to be opposite to one end of the second adhesive member 22 close to the deformed third portion 103, under the condition that the first support 121 and the second support 122 have a predetermined angle θ. M is a midpoint of a side surface of the first support 121 facing the display device 11. N is a midpoint of a side surface of the second support 122 facing the display device 11. The center of a circle that is tangent to the surface of the first support 121 facing the display device 11 and the surface of the second support 122 facing the display device 11 is O. The structure shown in fig. 10 can be equivalent to the geometric model shown in fig. 11.
In fig. 11, MP ═ NP ═ a, complementary angle of angle MPN is θ, 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, and the arc length L (corresponding to the first length) between MNs is expressed as follows:
Figure BDA0002722800390000202
the length of MP + NP is 2a (corresponding to the second length). 2a is greater than L.
If the display device 11 can be stretched, when the first posture is flattened by the angle shown in fig. 10, satisfying the planar condition, the deformed third portion 103 needs to have a maximum amount of deformationXmaxSo that
Figure BDA0002722800390000211
In order to ensure that the deformable third portion 103 is stretched when the planar angle is satisfied, it is necessary to set the deformation amount of the display device 11 when the planar condition is satisfied to be not more than the maximum deformation amountXmaxTherefore, the following are:
Figure BDA0002722800390000212
this mode is through setting for predetermineeing angle support assembly of laminating on display device 11, when can making the display device of preparation satisfy the plane condition, can produce pulling force to third portion 103 based on two support piece's direct butt or indirect butt to make it tighten and flare-out, guarantee its planarization.
Fig. 12 is a schematic view of a display device provided in an embodiment of the present application when the display device satisfies a planar condition, where the display device has a fixing assembly, the fixing assembly includes at least one first fixing element 20 connected to the display device 11, and in the first posture, the first fixing element 20 provides a pulling force to the display device 11, and in the pulling force, the first portion 101 and the second portion 102 at least have a tendency to move away from each other.
In the manner shown in fig. 12, the fixing assembly includes a first structural member 31 located at a 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 an end surface of the display device 11 facing the first structural member 31, and the other end is connected to an end surface of the first structural member 31 facing the display device 11, that is, the first fixing element 20 is located at a side of the display device 11.
In this way, the first fixing element 20 has a deformation capability, and in the first posture, the first fixing element 20 can change the length between the display device 11 and the first structural member 31 to provide a tensile force for the display device 11. The length direction of the first fixing member 20 may be set parallel to the arrangement direction of the three portions of the display device 11 in which the first portion 101 and the second portion 102 at least have a tendency to move away from each other under the tensile force, flattening in the arrangement direction. In other forms, the length direction may be perpendicular to the arrangement direction, and may be flattened in a direction perpendicular to the arrangement direction.
As shown in fig. 13, fig. 13 is a schematic view of another display apparatus provided in the embodiment of the present application when a display device satisfies a planar condition, in which the first structural member 31 may be disposed around the display device 11. The first fixing member 20 may be disposed between at least a partial region of a side of the display device 11 and the opposite first structural member 31 to provide a tensile force parallel to the display device 11 in the first posture, and flatten the third portion 103 thereof, so that the maximum height difference and the maximum slope variation value in the third portion 103 may be reduced.
Based on the arrangement direction of the three parts in the display device 11 and the relative bending principle, in the first posture, in the arrangement direction, the first fixing element 20 may be connected between the display device 11 and the first structural member 31 at one side of the display device 11, or the first fixing element 20 may be connected between the display device 11 and the first structural member 31 at two opposite sides of the display device 11, so that the pulling force provided by the first fixing element 20 to the display device 11 is parallel to the arrangement direction, so as to flatten the third part 103 to the greatest extent under the pulling force.
Fig. 4 to 13 are side views of the display device.
On the basis of the embodiments of fig. 12 and 13, the display apparatus may further be as shown in fig. 14, where fig. 14 is a schematic view of a further display apparatus provided in the embodiments of the present application when the display device satisfies a planar condition, and fig. 14 is a top view of a display side surface of the display apparatus, in this manner, the display device 11 includes a first side surface and a second side surface which are opposite to each other, the two first fixing elements 20 are located between the first side surface of the display device 11 and an 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, and further have two second fixing elements 40 located between the second side surface of the display device 11 and an end surface of the first structural member 31 facing the second side surface, and fixedly connect the display device 11 and the first structural member 31, and the second fixing elements 40 do not have a deformation capability of changing length in a connecting line between the first side surface and the second side surface .
The connecting line direction of the first side surface and the second side surface may be parallel to the arrangement direction of the three portions of the display device 11 or perpendicular to the arrangement direction, and the connecting line direction is set to be parallel to the arrangement direction in order to increase the flattening effect of the pulling force on the third portion.
Fig. 15 is a schematic view of a display device according to an embodiment of the present application when a display device satisfies a planar condition, as shown in fig. 15, and fig. 15 is a top view of the display device toward a display side surface, in a manner different from that shown in fig. 14 in that two first fixing members 20 are provided at both the first side surface and the second side surface.
In one embodiment of the present application, the first fixing element 20 is a spring element or a rubber element having elasticity, but the present application is not limited thereto, and in other embodiments of the present application, the first fixing element 20 may also be a contraction rod or the like, as the case may be.
As shown in fig. 16, fig. 16 is a schematic view of a display device provided in an embodiment of the present application when the display device satisfies a planar condition, and fig. 16 is a side view of the display device, in this way, the fixing assembly includes a first support 121 and a second support 122 disposed on a back surface of the display device 11 facing away from the display side surface, the first support 121 is disposed opposite to the first portion 101 on the back surface, and the second support 122 is disposed opposite to the second portion 102 on the back surface; the first support 121 and/or the second support 122 have a second deformation capability, which includes a capability of changing length along a preset direction; wherein the preset direction and the display device 11 in the first posture satisfy a vertical condition.
The first supporting member 121 and the second supporting member 122 may be an elastic adhesive layer. The first support 121 and the second support 122 have a space therebetween. One side of the first support member 121 facing away from the display device 11 is provided with a first hard plate 31, one side of the second support member 122 facing away from the display device 11 is provided with a second hard plate 32, and the first hard plate 31 and the second hard plate 32 do not have a deformation capability or the deformation capability is weaker than that of the first support member 121 and the second support member 122.
In the mode shown in fig. 16, the first hard sheet 31 and the second hard sheet 32 have a space in the first posture, and in other modes, the first hard sheet 31 and the second hard sheet 32 may contact each other in the first posture. In other manners, an integral hard board may be used for the side of the first support 121 and the second support 122 facing away from the display device 11.
As shown in fig. 17, fig. 17 is a schematic diagram illustrating a principle that a support member in the display apparatus shown in fig. 16 buffers deformation during bending deformation, and since the first support member 121 and the second support member 122 can change length in a direction perpendicular to the display device 11, during bending deformation of the display device 11, stress applied to the display device 11 can be buffered by changing the length of the first support member, so as to avoid over-stretching of the length of the third portion 103, so that the third portion 103 can be better flattened, and the maximum height difference and the maximum gradient change value of the third portion in the first posture can be reduced.
The display device provided by the embodiment of the application provides the same product standard of the display device and the folding screen so as to standardize the third part with the deformation capability and the rest plane parameters of folding.
Based on the foregoing embodiment, another embodiment of the present application further provides a computing device, including:
folding the 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 folds is less than or equal to 0.25 mm; the maximum degree of the gradient change of the cross section of the folds is less than or equal to 0.03. The computing device may be configured as the display device shown in fig. 1, with the fold region being the third portion having the ability to deform.
The display device is an electronic device with computing capability, such as a microcomputer, having a foldable display screen.
Wherein the folding area corresponds to at least two scanning lines; the scanning line is provided with a plurality of sampling points; the fold section is a tangent plane along the extension direction of the scanning line; the highest point and the lowest point are two extreme value test points on the same scanning line, the highest point is a sampling point with the maximum height, and the lowest point is a sampling point with the minimum height; the maximum degree of the gradient change of the cross section of the fold is the maximum gradient change of the same scanning line. As described in the above embodiments, the extending direction of the scan line may be parallel to the arrangement direction of the three portions in the folded screen, or may be in other directions.
In the embodiment of the present application, the wrinkle is a combination of all the undulating regions of the scan line corresponding to the end face of the wrinkle.
When the height difference and the gradient change of the folding screen are detected, the detection method comprises the following steps:
a) the folding screen can be flatly placed on a marble platform. The marble platform is a calibrated composite national standard marble platform.
b) The folded portion of the folding screen is scanned in a line by a height gauge. The height gauge is a laser height gauge.
In the process, 9 scanning lines can be taken for height scanning measurement, and in the same scanning line, the measurement compensation of two adjacent sampling points is not more than 0.5mm, such as 0.5 mm.
The length Ls of the scanning line in the direction perpendicular to the folding axis of the folding screen is determined by the length Lf of the freely deformable folding part of the folding device, and should satisfy Ls ═ Lf-5mm, the two ends of the scanning line are symmetrical about the folding axis, and the ends of the scanning line are each 2.5mm away from the boundary of the sampling area. The length Ls is the projected length on the X-axis, the actual curved extension of the non-scan line.
In the direction parallel to the folding screen bending axis, the spacing Ws of the scanning lines is determined as follows: taking 9 scanning lines as an example, the 9 scanning lines are sequentially a first scanning line to a ninth scanning line in a direction parallel to the bending axis of the folding screen, and the distance between the two scanning lines at the upper edge and the lower edge is 1mm from the visible area, that is, the distance between the two outermost scanning lines (the first scanning line and the ninth scanning line) and the adjacent display side edge of the display side surface is 1 mm; then, the distance center between the two scanning lines at the two upper edges and the two lower edges is taken as the position of a fifth scanning line, then the position of the scanning line at the upper edge (the first scanning line) and the position of the scanning line at the fifth scanning line are respectively taken as the position of a third scanning line, the position of the scanning line at the lower edge (the ninth scanning line) and the position of the scanning line at the fifth scanning line are taken as the position of a seventh scanning line, and based on the method for removing the center, and so on, the position lengths Ls of the second scanning line, the fourth scanning line, the sixth scanning line and the eighth scanning line are determined as the projection length on the X axis, and the actual bending extension length of the non-scanning line is determined. The spacing Ws of the scan lines is determined based on the width of the folded screen parallel to the bending axis, e.g., one width of the folded screen sets Ws at 2.5mm, and other widths of the folded screen sets Ws at other values.
c) And calculating the height difference delta H and the gradient change degree of the scanning line based on the scanning result:
△H＝Hmax-Hmin
Figure BDA0002722800390000251
where Y denotes the height position of the sample point, i.e. the position coordinate on the second coordinate axis Y, X denotes the position in the scanning direction, i.e. the position coordinate on the first coordinate axis X, and k is a positive integer, such as 15. Representing the maximum height difference of the folded screen by the delta H of the maximum Sn in the 9 scanning lines, and representing the maximum S in the 9 scanning linesnAnd representing the maximum gradient change degree of the folding screen.
At present, the folding screen technology of a microcomputer is not unified and standardized, the technical scheme of the application gives the maximum product standard of the height difference between the highest point and the lowest point of the fold and the gradient change of the section of the fold in the computing equipment which can be practically applied under the condition of comprehensively considering normal display and human eye resolution capacity, and can be used as the technical standard of the folding screen of the microcomputer, thereby being beneficial to popularizing the application of the folding display screen in the industry, promoting the innovation of the display technology and promoting the healthy development of the display industry.
The embodiments in the present description are described in a progressive manner, or in a parallel manner, or in a combination of a progressive manner and a parallel manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments can be referred to each other. For the computing device disclosed by the embodiment, the description is simple because the computing device corresponds to the display device disclosed by the embodiment, and the relevant parts can be referred to the relevant parts of the computing device for description.
It should be noted that in the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only used for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A display device, comprising:
a display device comprising a first portion, a second portion and a third portion, at least the third portion having a first deformation capability comprising the ability to allow the first and second portions to change relative angles, wherein the first and second portions are on opposite sides of the third portion;
wherein, in the first posture, the display side surface of the third portion satisfies at least one of the following conditions:
the maximum height difference is not more than 1 mm;
the maximum gradient change value is not more than 0.3;
wherein, in the first posture, the display device meets a plane condition.
2. The display device according to claim 1, the condition satisfied by the display-side surface of the third portion comprising:
a plurality of sampling points are arranged in the surface of the display side of the third part, space position parameters of the highest point and the lowest point in the sampling points are used for determining the maximum height difference, and space position parameters of all the sampling points are used for determining the maximum gradient change value;
or, the third portion has a plurality of sets of sampling points within the display side surface thereof, the sets of sampling points having a plurality of sampling points; in the same sampling point set, the sampling points meet a collinear condition, spatial position parameters of the highest point and the lowest point in the sampling points are used for determining the maximum height difference, and spatial position parameters of all the sampling points are used for determining the maximum gradient change value;
or, the display side of the third portion has a plurality of sets of sampling points having a plurality of sampling points; in the same sampling point set, the sampling points are located in a convex area and a concave area which are adjacent, the spatial position parameters of the highest point and the lowest point in the sampling points are used for determining the maximum height difference, and the spatial position parameters of all the sampling points are used for determining the maximum gradient change value.
3. The display device according to claim 2, wherein if the sampling points in the same sampling point set satisfy a collinear condition, the sampling points in the same sampling point set correspond to the same scanning line, and the spatial position parameter of the sampling point in each scanning line is used for determining the maximum sampling height difference and the maximum sampling gradient change value of the scanning line;
wherein the maximum height difference is a maximum value of the plurality of maximum sampling height differences, and the maximum gradient change value is a maximum value of the plurality of maximum sampling gradient change values.
4. The display device of claim 3, the spatial location parameter comprising: the device comprises a first position parameter and a second position parameter, wherein the first position parameter can represent the position coordinate of the sampling point on a first coordinate axis X, the second position parameter can represent the position coordinate of the sampling point on a second coordinate axis Y, and the first coordinate axis X and the second coordinate axis Y meet a vertical condition; in the first posture, the first coordinate axis X and the display side surface meet a parallel condition, the first coordinate axis X and the arrangement direction of three parts in the display device meet a parallel condition, 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 the parallel condition;
in the same scanning line, the maximum sampling height difference is the difference value of the position coordinates of the highest point and the lowest point on the second coordinate axis Y;
the scanning line is provided with N sampling points, N is a positive integer larger than 1, and the N sampling points are sequentially from a 1 st sampling point to an Nth sampling point in the extending direction of the scanning line; each sampling point from the K +1 sampling point to the N-K sampling point is used for determining a sampling gradient 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; sample point P of i-Ki-KHas a spatial position parameter of (x)i-K，yi-K) Ith sample point PiHas a spatial position parameter of (x)i，yi) I + K th sampling point Pi+KHas a spatial position parameter of (x)i+K，yi+K) And the sampling gradient change value corresponding to the ith sampling point is as follows:
Figure FDA0002722800380000021
5. the display device of claim 1, the maximum height difference being no more than 0.25 mm; the maximum gradient change value is not more than 0.03.
6. The display device of claim 1, having a fixing assembly connected with the display apparatus for fixing the display apparatus; in the first posture, the fixing component is used for applying external force far away from the second part to the first part and/or applying external force far away from the first part to the second part.
7. The display apparatus of claim 6, the securing assembly comprising a first support and a second support disposed on a back side of the display device facing away from the display side surface, the first support disposed opposite the first portion at the back side, the second support disposed opposite the second portion at the back side; the first support part and the second support part do not have deformation capacity; enabling the display side surface to satisfy a coplanar condition if the first support and the second support satisfy the planar condition; wherein, after the coplanar condition is satisfied, the first support applies an external force to the first portion away from the second portion and/or the second support applies an external force to the second portion away from the first portion;
or, the fixing assembly comprises at least one first fixing element connected with the display device, and in the first posture, the first fixing element provides a pulling force for the display device, and in the pulling force, the first part and the second part at least have a tendency to move away from each other.
8. The display apparatus of claim 6, the securing assembly comprising a first support and a second support disposed on a back side of the display device facing away from the display side surface, the first support disposed opposite the first portion at the back side, the second support disposed opposite the second portion at the back side; the first support and/or the second support are provided with a second deformability comprising an ability to change length in a preset direction;
and the preset direction and the display device in the first posture meet a vertical condition.
9. A computing device, comprising:
folding the 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 folds is less than or equal to 0.25 mm;
the maximum degree of the gradient change of the cross section of the folds is less than or equal to 0.03.
10. The computing device of claim 9, the fold region corresponding to at least two scan lines; the scanning line is provided with a plurality of sampling points; the fold section is a tangent plane along the extension direction of the scanning line;
the highest point and the lowest point are two extreme value test points on the same scanning line;
the maximum degree of the gradient change of the cross section of the fold is the maximum gradient change of the same scanning line.
CN202011093044.5A 2020-10-13 2020-10-13 Display device and computing device Pending CN112086032A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113299213A (en) * 2021-06-17 2021-08-24 合肥维信诺科技有限公司 Crease detection method and device
CN114550594A (en) * 2022-03-02 2022-05-27 安徽繁盛显示科技有限公司 Double-shaft symmetric rotation bending mechanism
CN114608818A (en) * 2022-03-01 2022-06-10 深圳市华星光电半导体显示技术有限公司 Folding screen crease detection device and method thereof
WO2023087356A1 (en) * 2021-11-17 2023-05-25 武汉华星光电半导体显示技术有限公司 Screen wrinkle degree inspection method and visual inspection device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113299213A (en) * 2021-06-17 2021-08-24 合肥维信诺科技有限公司 Crease detection method and device
CN113299213B (en) * 2021-06-17 2022-08-05 合肥维信诺科技有限公司 Crease detection method and device
WO2023087356A1 (en) * 2021-11-17 2023-05-25 武汉华星光电半导体显示技术有限公司 Screen wrinkle degree inspection method and visual inspection device
CN114608818A (en) * 2022-03-01 2022-06-10 深圳市华星光电半导体显示技术有限公司 Folding screen crease detection device and method thereof
CN114608818B (en) * 2022-03-01 2023-12-01 深圳市华星光电半导体显示技术有限公司 Folding screen crease detection device and method thereof
CN114550594A (en) * 2022-03-02 2022-05-27 安徽繁盛显示科技有限公司 Double-shaft symmetric rotation bending mechanism
CN114550594B (en) * 2022-03-02 2023-08-25 安徽繁盛显示科技有限公司 Biaxial symmetrical rotation bending mechanism

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