CN111047980A - Flexible display panel and terminal equipment - Google Patents
Flexible display panel and terminal equipment Download PDFInfo
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- CN111047980A CN111047980A CN201811192258.0A CN201811192258A CN111047980A CN 111047980 A CN111047980 A CN 111047980A CN 201811192258 A CN201811192258 A CN 201811192258A CN 111047980 A CN111047980 A CN 111047980A
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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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- 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
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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
- G09F9/33—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 being semiconductor devices, e.g. diodes
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Abstract
The application discloses flexible display panel and terminal equipment belongs to and shows technical field. The flexible display panel includes: the sealed box body, the display substrate located in the cavity space of the sealed box body, and the transparent lubricating medium filled in the gap between the cavity space and the display substrate. The thickness direction of the display substrate is parallel to the thickness direction of the transparent cover plate. At least one gap is reserved between the display substrate and the sealing box body in the direction perpendicular to the thickness of the display substrate, and for any gap, the minimum width of the gap is greater than or equal to a preset width threshold value which is: the maximum width change value of the gap is obtained after the flexible display panel is bent from the unbent state to the bending state. The transparent lubricating medium filled in the gap between the display substrate and the sealing box body has high fluidity, so that the phenomenon of layering of the display substrate in the bending process of the flexible display panel is avoided.
Description
Technical Field
The present application relates to the field of electronic communications technologies, and in particular, to the field of display technologies.
Background
As the flexible display technology is mature, a display device with a folding function (such as a folding mobile phone, a folding tablet, or a folding computer) will be a big trend in the future. The display area of the display device with the folding function is foldable, and compared with the traditional display device, the display device with the folding function can realize the switching of the physical size of the display device, thereby greatly improving the use experience of a user.
Currently, a display device having a folding function includes: a flexible display panel, the flexible display panel comprising: a flexible substrate, and a display substrate disposed on the flexible substrate. Typically, the flexible substrate is connected to the display substrate by optical glue.
However, the flowability of the optical glue between the flexible substrate and the display substrate is poor, and in the process of bending the flexible display panel, a delamination phenomenon may occur between the display substrate and the flexible substrate in a bending region of the flexible display panel, resulting in a short service life of the flexible display panel.
Disclosure of Invention
The embodiment of the application provides a flexible display panel and a terminal device, and the problem that the service life of the existing flexible display panel is short can be solved to a certain extent. The technical scheme is as follows:
in a first aspect, a flexible display panel is provided, comprising:
the sealed box body, the inside cavity space that has of sealed box body, the sealed box body includes: the two transparent cover plates are parallel to each other, at least one part of each transparent cover plate is made of transparent flexible materials, and the cavity space is positioned between the two transparent cover plates; a display substrate disposed in the cavity space; and a transparent lubricating medium filled in a gap between the cavity space and the display substrate; the thickness direction of the display substrate is parallel to the thickness direction of the transparent cover plates, and the gap distance between the two transparent cover plates is larger than the thickness of the display substrate.
In the direction perpendicular to thickness place, when flexible display panel does not buckle, there is at least one clearance between display substrate and the sealed box body, for arbitrary the clearance, the minimum width in clearance is greater than or equal to and predetermines the width threshold value, it is to predetermine the width threshold value: and after the flexible display panel is bent from unbent to bending, the maximum width change value of the gap is obtained. Like this, this flexible display panel is when buckling to the at utmost, and display substrates and seal box body contactless, perhaps just contact, and display substrates can not receive seal box body's influence to avoid display substrates to receive the damage when flexible display panel buckles.
In this application, because the transparent lubricating medium that fills in the clearance between this display substrate and the cavity space has higher mobility, consequently this display substrate can be in the free slip of cavity space, and the phenomenon of layering appears in the effectual display substrate of having avoided buckling the in-process to flexible display panel for this flexible display panel's life is higher.
Optionally, the cavity space is a cubic space, and the display substrate is a rectangular plate-shaped substrate; be provided with first kinking in the flexible display panel, first kinking place direction includes: a direction non-parallel to a side surface of the display substrate, when the flexible display panel is not bent, a first gap exists between the first side surface and the first inner surface of the display substrate, and the preset width threshold value at which the minimum width of the first gap is greater than or equal to: the flexible display panel is bent from the non-bent state to the bent state along the first bending line, the maximum width variation value of the first gap is obtained, the first inner surface is the inner surface of the sealed box body opposite to the first side surface, and the first side surface comprises each side surface of at least two adjacent side surfaces of the display substrate.
A method for forming a flexible display panel having a bend line in a direction comprising: a structure of the flexible display panel when not parallel to the side surface in the display substrate.
Optionally, the cavity space is a cubic space, and the display substrate is a rectangular plate-shaped substrate; be provided with the second kinking in the flexible display panel, second kinking place direction includes: in a direction parallel to one side surface of the display substrate, when the flexible display panel is not bent, a second gap exists between a second side surface and a second inner surface of the display substrate, and the preset width threshold value at which the minimum width of the second gap is greater than or equal to: the flexible display panel is bent from the non-bent state to the bent state along the second bending line, the maximum width variation value of the second gap is obtained, the second inner surface is the inner surface of the sealed box body opposite to the second side surface, and the second side surface comprises at least one side surface of the display substrate parallel to the second bending line.
A method for forming a flexible display panel having a bend line in a direction comprising: a structure of the flexible display panel in a direction parallel to one side surface of the display substrate.
Optionally, when the flexible display panel is not bent, a gap exists between each side surface of the display substrate and an inner surface of the sealed box body opposite to the side surface. An implementation of a structure of a flexible display substrate.
Optionally, when the flexible display panel is not bent, a gap exists between a first object-side surface of the display substrate and an inner surface of the sealed box body opposite to the first object-side surface, and a second object-side surface of the display substrate except the first object-side surface is fixedly connected to the inner surface of the sealed box body. Another implementation of a structure of a flexible display substrate.
Optionally, the flexible display panel further includes: and the substrate connecting structure is arranged on the inner surface in the sealed box body, and the second target side surface of the display substrate is fixedly connected with the inner surface of the sealed box body through the substrate connecting structure.
Optionally, the sealing box body is provided with a glue sealing frame arranged between the two transparent cover plates, the two transparent cover plates and the glue sealing frame can form the cavity space, and the glue sealing frame and the substrate connecting structure are of an integrated structure.
Optionally, a gap between each bottom surface of the display substrate and the inner surface of the sealed box body opposite to the bottom surface is filled with a transparent pasting medium, and an area of the transparent pasting medium contacting the bottom surface is smaller than an area of the bottom surface. Still another implementation of a structure of a flexible display substrate.
Optionally, the flexible display panel has a bending region and a non-bending region, the transparent cover plate located in the bending region is made of a transparent flexible material, and the transparent cover plate located in the non-bending region is made of a transparent rigid material. A line of sight method for a structure of a flexible cover plate.
Optionally, the flexible display panel has a bending region and a non-bending region, the transparent cover plate located in the bending region is made of a transparent flexible material, one part of the transparent cover plate located in the non-bending region is made of a transparent hard material, and the other part of the transparent cover plate is made of a transparent flexible material. Another way of looking at the structure of the flexible cover plate.
In a second aspect, there is provided another flexible display panel, comprising:
the sealed box body, the inside cavity space that has of sealed box body, the sealed box body includes: the two transparent cover plates are parallel to each other, at least one part of each transparent cover plate is made of transparent flexible materials, and the cavity space is positioned between the two transparent cover plates;
the display substrate and the touch substrate are arranged in the cavity space in a superposed mode;
the transparent lubricating medium is filled in a gap between the cavity space and the display substrate, and the transparent lubricating medium is filled in a gap between the cavity space and the touch substrate;
the thickness direction of the display substrate, the thickness direction of the touch substrate and the thickness direction of the transparent cover plates are parallel, and the gap distance between the two transparent cover plates is larger than the superposition thickness of the display substrate and the touch substrate;
in the direction perpendicular to thickness place, when flexible display panel does not buckle, there is at least one clearance between display substrate and the sealed box body, for arbitrary the clearance, the minimum width in clearance is greater than or equal to and predetermines the width threshold value, it is to predetermine the width threshold value: and after the flexible display panel is bent from unbent to bending, the maximum width change value of the gap is obtained.
In a third aspect, a terminal device is provided, which includes: the flexible display panel of any of the first aspect, or the flexible display panel of the second aspect.
Optionally, the terminal device further includes: the display device comprises a driving chip and a flexible circuit board used for connecting the driving chip and the display substrate.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
the flexible display panel includes: the display device comprises a sealing box body, a display substrate positioned in the sealing box body and a transparent lubricating medium filled in a gap between the sealing box body and the display substrate, wherein the thickness direction of the display substrate is parallel to the thickness direction of transparent cover plates, and the gap distance between the two transparent cover plates is greater than the thickness of the display substrate. At least one gap is reserved between the display substrate and the sealing box body in the direction perpendicular to the thickness of the display substrate, and for any gap, the minimum width of the gap is greater than or equal to a preset width threshold value which is: the maximum width change value of the gap is obtained after the flexible display panel is bent from the unbent state to the bending state. Because the transparent lubricating medium filled in the gap between the display substrate and the sealing box body has higher fluidity, the display substrate can freely slide in the sealing box body, the phenomenon that the display substrate is layered in the bending process of the flexible display panel is effectively avoided, and the service life of the flexible display panel is longer.
Drawings
Fig. 1 is a schematic structural diagram of a flexible display panel according to an embodiment of the present application;
fig. 2 is a schematic view of the flexible display panel shown in fig. 1 after being bent;
FIG. 3 is an enlarged fragmentary view at D1 in FIG. 1;
fig. 4 is a partial enlarged view at D2 in fig. 2;
fig. 5 is a top view of another flexible display panel provided in an embodiment of the present application;
fig. 6 is a top view of another flexible display panel provided in an embodiment of the present application;
fig. 7 is a top view of yet another flexible display panel provided in an embodiment of the present application;
fig. 8 is a top view of a flexible display panel according to another embodiment of the present application;
fig. 9 is a schematic structural diagram of another flexible display panel according to another embodiment of the present application;
fig. 10 is a schematic structural diagram of another flexible display panel according to another embodiment of the present application;
fig. 11 is a schematic structural diagram of a transparent cover plate according to an embodiment of the present disclosure;
FIG. 12 is a schematic structural diagram of another transparent cover plate provided in the embodiments of the present application;
FIG. 13 is a schematic structural diagram of another transparent cover plate provided in the embodiments of the present application;
FIG. 14 is a schematic diagram of a method of manufacturing the transparent cover shown in FIG. 13 according to an embodiment of the present disclosure;
fig. 15 is a schematic structural diagram of a flexible display panel according to yet another embodiment of the present application;
fig. 16 is a schematic structural diagram of a display device according to an embodiment of the present application;
fig. 17 is a flowchart of a method for manufacturing a flexible display panel according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a flexible display panel according to an embodiment of the present application, where the flexible display panel may include:
a sealed box body 10, a display substrate 20 and a transparent lubricating medium 30.
The sealed box body 10 has a cavity space inside, and the sealed box body 10 may include: two transparent cover plates 11 parallel to each other, at least a portion of each transparent cover plate 11 being made of a transparent flexible material, can ensure a simultaneous bending with the display substrate 20. In an alternative implementation, the sealed box 10 further comprises: the glue sealing frame 12 is arranged between the two transparent cover plates 11 which are parallel to each other, and a closed cavity space can be formed by the two transparent cover plates 11 and the glue sealing frame 12.
The display substrate 20 is disposed in the cavity space of the sealed box 10, the thickness direction of the display substrate 20 is parallel to the thickness direction of the transparent cover plate 11, and the gap distance between the two transparent cover plates 11 is greater than the thickness of the display substrate 20.
The transparent lubricating medium 30 is filled in the gap between the display substrate 20 and the cavity space.
As shown in fig. 1 and 2, fig. 2 is a schematic view of the flexible display panel shown in fig. 1 after being bent. In the direction perpendicular to the thickness of the display substrate 20, when the flexible display panel is not bent, at least one gap (e.g., the gap C1 and the gap C2) exists between the display substrate 20 and the sealed box 10, and for any gap, the minimum width of the gap is greater than or equal to a preset width threshold value: the maximum width change value of the gap is obtained after the flexible display panel is bent from the unbent state to the bending state. Like this, this flexible display panel is when buckling to the at utmost, and display substrate 20 and sealed box body 10 contactless, perhaps just contact (just contact promptly, do not produce the effort), display substrate 20 can not receive the influence of sealed box body 10 to avoid display substrate 20 to receive the damage when flexible display panel buckles. It should be noted that, in the embodiment of the present application, when the flexible display panel is not bent, each gap corresponds to one preset width threshold, and the size of each preset width threshold may be the same or different.
As shown in fig. 2, when the flexible display panel is bent, since the bending radius R1 of the display substrate 20 in the bending region 10a of the flexible display panel is smaller than the maximum bending radius R2 of the sealed box 10 (i.e., the bending radius R2 of the transparent cover 11 located at the outer side of the flexible display panel after bending), the size (i.e., at least one of the length and the width) of the display substrate 20 in the bending region 10a is gradually reduced, and the size of the display substrate 20 in the non-bending region is gradually increased during the bending of the flexible display panel.
Referring to fig. 3 and 4, fig. 3 is a partial enlarged view of D1 in fig. 1, and fig. 4 is a partial enlarged view of D2 in fig. 2. Since the size of the display substrate 20 in the non-bending region gradually increases, the width of the gap (e.g., the gap C1) between the display substrate 20 and the sealed box 10 gradually decreases, and if the minimum width of the gap decreases to 0, the flexible display panel cannot be bent any more. Because the transparent lubricating medium 30 filled in the gap between the display substrate 20 and the sealing box 10 in the embodiment of the present application has high fluidity, the display substrate 20 can freely slide in the sealing box 10, the phenomenon that the display substrate 20 is layered in the bending process of the flexible display panel is effectively avoided, and the service life of the flexible display panel is long.
In an alternative implementation, as shown in fig. 1, the display substrate 20 may be an Organic Light-Emitting Diode (OLED) display substrate. The shape of the cavity space of the sealed box 10 may be any shape, for example, the cavity space is a cubic space or a cylindrical space; the display substrate 20 may be a rectangular plate-shaped substrate, a circular plate-shaped substrate, or the like. In the embodiment of the present application, the cavity space is a cubic space, and the display substrate 20 is a rectangular plate-shaped substrate for example, which is not described in detail herein.
Note that, when the display substrate 20 is a rectangular plate-shaped substrate, the display substrate 20 has two bottom surfaces a2 parallel to the transparent cover plate 11, and four side surfaces a1 connected between the two bottom surfaces a 2. It should be added that each side surface a1 may be a rectangular surface perpendicular to the transparent cover plate 11, and in an alternative implementation, the side surface a1 may also be not perpendicular to the transparent cover plate 11, for example, the side surface a1 is a step-shaped surface, or the side surface a1 and the transparent cover plate 11 are inclined planes that are not perpendicular to the transparent cover plate.
In the embodiment of the present application, different bending lines may be disposed in the flexible display panel, and the flexible display panel may be bent along the bending lines. In the embodiment of the present application, the structure of the flexible display panel is related to the direction of the bending line in the flexible display panel. In the flexible display panel production process, a bending line (i.e., determining whether the flexible display panel can be bent horizontally, vertically, obliquely, etc.) may be predefined, and the flexible display panel may be manufactured based on the predefined bending line.
In a first implementation manner, as shown in fig. 5, fig. 5 is a top view of another flexible display panel provided by the embodiment of the present application. If the flexible display panel has a first bending line L1, and the first bending line L1 is in a direction including: in a non-parallel orientation with respect to the display substrate 20. During the process of bending the flexible display panel along the first bending line L1, the length of each of at least two adjacent side surfaces of the display substrate 20 in the non-bending region gradually increases. In order to ensure that the flexible display panel can be bent normally, it is required to ensure that when the flexible display panel is not bent, a first gap exists between the first side surface a11 and the first inner surface B11 of the display substrate 20, and the minimum width of the first gap is greater than or equal to a preset width threshold: the flexible display panel has a maximum width variation value of the first gap after being bent from an unbent state to a bent state along the first bending line L1, the first inner surface B11 is an inner surface of the sealed case body 10 opposite to the first side surface a11, and the first side surface a11 includes each of at least two adjacent side surfaces of the display substrate 20.
In a second implementation manner, as shown in fig. 6, fig. 6 is a top view of another flexible display panel provided in the embodiment of the present application. If the flexible display panel has a second bending line L2, the direction of the second bending line L2 includes: a direction parallel to one side surface of the display substrate 10. During the process of bending the flexible display panel along the second bending line L2, the length of the side surface a13 of the display substrate 20 in the non-bending region perpendicular to the direction of the second bending line L2 gradually increases. In order to ensure that the flexible display panel can be bent normally, it is required to ensure that when the flexible display panel is not bent, a second gap exists between the second side surface a12 and the second inner surface B12 of the display substrate 20, and the minimum width of the second gap is greater than or equal to the preset width threshold: the flexible display panel is bent from the non-bent state to the bent state along the second bending line L2, the second inner surface B12 is the inner surface of the sealed box 10 opposite to the second side surface a12, and the second side surface a12 includes at least one side surface of the display substrate 20 parallel to the second bending line L2.
In a third implementation manner, as shown in fig. 7, fig. 7 is a top view of a flexible display panel provided in an embodiment of the present application. If the flexible display panel has the first bending line L1 and the second bending line L2, when the flexible display panel is not bent, a third gap exists between the third side surface a14 and the third inner surface B13 of the display substrate 20, and a minimum width of the third gap is greater than or equal to a predetermined width threshold: the flexible display panel is bent from the non-bent state to the bent state along the first bend line L1 and the second bend line L2, and the third inner surface B13 is an inner surface of the sealed case 10 opposite to a third side surface a14, the third side surface a14 including each of at least two adjacent side surfaces of the display substrate 20.
With reference to the three realizable manners, the following three structures are taken as examples in the embodiment of the present application to describe the structure of the flexible display panel:
in a first structure, please refer to fig. 8, fig. 8 is a top view of a flexible display panel according to another embodiment of the present disclosure. When the flexible display panel is not bent, a gap exists between each side surface a1 in the display substrate 20 and the inner surface B1 of the sealing case 10 opposite to the side surface a 1.
In a second structure, please refer to fig. 9, fig. 9 is a schematic structural diagram of another flexible display panel according to another embodiment of the present application. When the flexible display panel is not bent, a gap exists between a first object side surface A1a of four side surfaces of the display substrate 20 and an inner surface B1a of the sealing case body 10 opposite to the first object side surface A1a, and a second object side surface A1B of the four side surfaces except the first object side surface A1a is fixedly connected to the inner surface of the sealing case body 10.
Optionally, the flexible display panel further includes: a substrate connection structure 40, the substrate connection structure 40 may be disposed on an inner surface B1B of the sealed case 10 opposite to the second object side surface A1B, and the second object side surface A1B of the display substrate 20 may be fixedly connected to the inner surface B1B of the sealed case 10 through the substrate connection structure 40.
In an optional implementation manner, the substrate connection structure 40 and the sealant frame 12 may be an integrated structure, and at this time, the substrate connection structure 40 and the sealant frame 12 may be formed simultaneously, which effectively simplifies the manufacturing difficulty of the flexible display panel.
In a third structure, please refer to fig. 10, where fig. 10 is a schematic structural diagram of another flexible display panel according to another embodiment of the present application. When the flexible display panel is not bent, a gap exists between each side surface a1 in the display substrate 20 and the inner surface B1 of the sealed box body 10 opposite to the side surface a1, a gap between each bottom surface a2 of the display substrate 20 and B2 of the inner surface of the sealed box body 10 opposite to the bottom surface a2 is filled with the transparent paste medium 50, and the area of the transparent paste medium 50 contacting with the bottom surface a2 is smaller than the area of the bottom surface a 2.
In an alternative implementation manner, there are various implementation manners of the structure of each transparent cover plate 11 in the sealed box 10, and the embodiment of the present application is schematically illustrated by taking the following three displayable manners as examples:
in a first realisation, each transparent cover 11 is entirely made of transparent flexible material. The transparent flexible material may include: polyimide (PI), Polyethylene terephthalate (PET), and the like.
In a second implementation manner, as shown in fig. 11, fig. 11 is a schematic structural diagram of a transparent cover plate provided in an embodiment of the present application, where the transparent cover plate 11 has a bending region 11a and a non-bending region 11b, a material of the transparent cover plate located in the bending region 11a is made of a transparent flexible material, and a material of the transparent cover plate located in the non-bending region 11b is made of a transparent rigid material. The transparent flexible material may include: PI or PET; the transparent hard material may include: a hard glass material.
In a third realisation, in each transparent cover 11, the transparent cover located in the bending zone 11a is made of a transparent flexible material; a portion of the transparent cover plate located at the non-bending region 11b is made of a transparent hard material, and the other portion is made of a transparent flexible material. For example, as shown in fig. 12, a transparent rigid material may be located on a transparent flexible material; as shown in fig. 13, the transparent hard material may also be wrapped by a transparent flexible material.
In fig. 11, 12 and 13, the white area refers to the area of the transparent hard material in the transparent cover plate 11, and the diagonal filling area refers to the area of the transparent flexible material in the transparent cover plate 11. The following examples are schematically illustrated by way of example of the manufacture of the transparent cover plate of fig. 13:
as shown in fig. 14, fig. 14 is a schematic diagram of manufacturing the transparent cover plate shown in fig. 13 according to an embodiment of the present application. The transparent cover plate 11 includes: two flexible diaphragms 111 parallel to each other, and an optical adhesive 112 having a hardness changing property under an illumination condition and located between the two flexible diaphragms 111, wherein the material of the flexible diaphragms 111 may be PI or PET or the like. The optical adhesive 112 is exposed by the light-shielding sheet 011, so that the hardness of the optical adhesive 112 irradiated by light is increased, and the hardness of the optical adhesive 112 not irradiated by light (i.e., the optical adhesive 112 corresponding to the light-shielding sheet 011) is unchanged, so that the transparent hard material (i.e., the optical adhesive 112 irradiated by light) in the transparent cover plate 11 can be wrapped by the transparent flexible material (i.e., the optical adhesive 112 not irradiated by light and the two flexible films 111).
To sum up, the flexible display panel provided by the embodiment of the present application includes: the display device comprises a sealing box body, a display substrate positioned in the sealing box body and a transparent lubricating medium filled in a gap between the sealing box body and the display substrate, wherein the thickness direction of the display substrate is parallel to the thickness direction of transparent cover plates, and the gap distance between the two transparent cover plates is greater than the thickness of the display substrate. At least one gap is reserved between the display substrate and the sealing box body in the direction perpendicular to the thickness of the display substrate, and for any gap, the minimum width of the gap is greater than or equal to a preset width threshold value which is: the maximum width change value of the gap is obtained after the flexible display panel is bent from the unbent state to the bending state. Because the transparent lubricating medium filled in the gap between the display substrate and the sealing box body has higher fluidity, the display substrate can freely slide in the sealing box body, the phenomenon that the display substrate is layered in the bending process of the flexible display panel is effectively avoided, and the service life of the flexible display panel is longer.
An embodiment of the present application further provides another flexible display panel, as shown in fig. 15, fig. 15 is a schematic structural diagram of a flexible display panel provided in another embodiment of the present application, where the flexible display panel includes:
the sealed box body 10, the display substrate 20, the touch substrate 80 and the transparent lubricating medium 30.
The sealed box body 10 has a cavity space inside, and the sealed box body 10 may include: two transparent cover plates 11 parallel to each other, at least a part of each transparent cover plate 11 being made of a transparent flexible material. In an alternative implementation, the sealed box 10 further comprises: the glue sealing frame 12 is arranged between the two transparent cover plates 11 which are parallel to each other, and a closed cavity space can be formed by the two transparent cover plates 11 and the glue sealing frame 12. The display substrate 20 and the touch substrate 80 are stacked and disposed in the cavity space of the sealed box 10. The thickness direction of the display substrate 20 and the thickness direction of the touch substrate 80 are parallel to the thickness direction of the transparent cover plate 11, and the gap distance between the two transparent cover plates 11 is greater than the superposed thickness of the display substrate 20 and the touch substrate 80. The transparent lubricating medium 30 is filled in the gap between the display substrate 20 and the cavity space, and the gap between the touch substrate 80 and the cavity space.
Wherein, in the direction of perpendicular to thickness place, when flexible display panel did not buckle, there is at least one clearance between display substrate 20 and the sealed box body 10, and to arbitrary clearance, the minimum width in clearance is greater than or equal to and predetermines the width threshold value, predetermines the width threshold value and is: after the flexible display panel is bent from unbent to bending, the maximum width change value of the gap is obtained.
It should be noted that, contents in the embodiment corresponding to the flexible display substrate shown in fig. 1 may be referred to for a principle in the flexible display substrate shown in fig. 15, and the embodiment of the present application is not described herein again.
The embodiment of the present application further provides a display device, and the display device may be: a foldable cell phone, a foldable tablet, a foldable computer, etc. The display device may include any one of the flexible display panels shown in fig. 1, 15, 5 to 10.
Alternatively, as shown in fig. 16, fig. 16 is a schematic structural diagram of a display device according to an embodiment of the present disclosure, and the display device may include the Flexible display panel shown in fig. 9, a driver chip 60, and a Flexible Printed Circuit (FPC) 70 for connecting the driver chip 60 and the display substrate 20 in the sealed case 10. The driving chip 60 may input a display driving signal to the display substrate 20 through the FPC70 so that the flexible display panel can display image information.
Note that the display device shown in fig. 16 is schematically illustrated by taking as an example that the FPC70 is electrically connected to one side surface of the display substrate 20 which is fixedly connected to the substrate connection structure 40. In another alternative implementation, the FPC70 may also be electrically connected to a side surface of the display substrate 20 that is not fixedly connected to the substrate connection structure 40, and at this time, the display substrate 20 and the FPC may be electrically connected through a flexible trace, and the flexible trace may be deformed along with the bending of the flexible display substrate in the sealed box 10.
Optionally, the display device may further include: the flexible protection shell is used for wrapping the edges of the FPC, the driving chip and the flexible display panel, and can effectively protect the FPC, the driving chip and the flexible display panel and avoid damage to the devices. For example, the flexible protective shell is made of silicone.
An embodiment of the present application further provides a method for manufacturing a flexible display panel, as shown in fig. 17, where fig. 17 is a flowchart of a method for manufacturing a flexible display panel provided in an embodiment of the present application, where the method is used to manufacture any one of the flexible display panels shown in fig. 1, 5 to 10, and the method includes:
And 1703, sealing the non-sealed box body to obtain the flexible display panel with the sealed box body.
Wherein, this sealed box body includes: the display substrate comprises two transparent cover plates which are parallel to each other, the thickness direction of the display substrate is parallel to the thickness direction of the transparent cover plates, and the gap distance between the two transparent cover plates is greater than the thickness of the display substrate; in the direction of perpendicular to thickness place, when flexible display panel did not buckle, there is at least one clearance between display substrates and the sealed box body, and to arbitrary clearance, the minimum width in clearance is greater than or equal to and predetermines the width threshold value, predetermines the width threshold value and is: after the flexible display panel is bent from unbent to bending, the maximum width change value of the gap is obtained.
In the embodiments of the present application, there are various realizations of the flexible display panel manufactured and formed through the steps 1701 to 1703, and the embodiments of the present application are schematically illustrated by taking the following two realizations as examples:
in a first implementation, step 1701 may include: forming a non-closed sealing frame between the two transparent cover plates, wherein the non-closed sealing frame is provided with an opening region; then, the display substrate is passed through the opening region of the non-sealed sealing frame, so that the display substrate is positioned in the cavity space formed by the two transparent cover plates and the non-sealed sealing frame.
The step 1702 may include: and injecting a transparent lubricating medium into the cavity space at the opening area of the non-closed sealing glue frame. It should be noted that, in the process of injecting the transparent lubricating medium, the transparent lubricating medium may be continuously injected until the transparent lubricating medium is flush with the end face of the opening region of the frame sealing adhesive or slightly overflows from the cavity space, so that it is ensured that the gap in the light space is completely filled.
The step 1703 may include: and sealing the non-sealed glue sealing frame to form a sealed glue sealing frame between the two transparent cover plates, so that the flexible display panel with the sealed box body can be obtained.
In a second implementation manner, the step 1701 may include: a sealant frame is formed on a transparent cover plate, and a display substrate is arranged in a space formed between the transparent cover plate and the sealant frame.
The step 1702 may include: and injecting a transparent lubricating medium into a space formed between the transparent cover plate and the sealant frame. It should be noted that, in the process of injecting the transparent lubricating medium, the transparent lubricating medium may be continuously injected until the transparent lubricating medium is flush with the upper end surface of the frame sealing adhesive or slightly overflows from the space formed between the transparent cover plate and the frame sealing adhesive, so that it is ensured that the gap in the space formed between the transparent cover plate and the frame sealing adhesive is completely filled.
The step 1703 may include: and another transparent cover plate is buckled on the sealant frame, so that the flexible display panel with the sealed box body can be obtained.
It should be noted that, at least a part of each transparent cover plate is made of a transparent flexible material, in order to ensure that the transparent cover plates do not deform when the transparent lubricating medium is injected, each transparent cover plate may be attached to a rigid substrate in advance, the transparent cover plates in steps 1701 to 1703 are transparent cover plates attached to the substrate, when the sealed box is formed, it is necessary to ensure that one sides of the two transparent cover plates, which are far from the substrate, are arranged oppositely, and after step 1703 is completed, the substrate of the two transparent cover plates is peeled off.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific principles of the flexible display panel described above may refer to the corresponding contents in the foregoing embodiments of the structure of the flexible display panel, and are not described herein again.
The above description is intended to cover alternative embodiments of the present application and not to limit the present application, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (13)
1. A flexible display panel, comprising:
the sealed box body, the inside cavity space that has of sealed box body, the sealed box body includes: the two transparent cover plates are parallel to each other, at least one part of each transparent cover plate is made of transparent flexible materials, and the cavity space is positioned between the two transparent cover plates;
a display substrate disposed in the cavity space;
and a transparent lubricating medium filled in a gap between the cavity space and the display substrate;
the thickness direction of the display substrate is parallel to the thickness direction of the transparent cover plates, and the gap distance between the two transparent cover plates is larger than the thickness of the display substrate;
in the direction perpendicular to thickness place, when flexible display panel does not buckle, there is at least one clearance between display substrate and the sealed box body, for arbitrary the clearance, the minimum width in clearance is greater than or equal to and predetermines the width threshold value, it is to predetermine the width threshold value: and after the flexible display panel is bent from unbent to bending, the maximum width change value of the gap is obtained.
2. The flexible display panel of claim 1, wherein the cavity space is a cubic space, and the display substrate is a rectangular plate-shaped substrate;
be provided with first kinking in the flexible display panel, first kinking place direction includes: a direction non-parallel to a side surface of the display substrate, when the flexible display panel is not bent, a first gap exists between the first side surface and the first inner surface of the display substrate, and the preset width threshold value at which the minimum width of the first gap is greater than or equal to: the flexible display panel is bent from the non-bent state to the bent state along the first bending line, the maximum width variation value of the first gap is obtained, the first inner surface is the inner surface of the sealed box body opposite to the first side surface, and the first side surface comprises each side surface of at least two adjacent side surfaces of the display substrate.
3. The flexible display panel of claim 1, wherein the cavity space is a cubic space, and the display substrate is a rectangular plate-shaped substrate;
be provided with the second kinking in the flexible display panel, second kinking place direction includes: in a direction parallel to one side surface of the display substrate, when the flexible display panel is not bent, a second gap exists between a second side surface and a second inner surface of the display substrate, and the preset width threshold value at which the minimum width of the second gap is greater than or equal to: the flexible display panel is bent from the non-bent state to the bent state along the second bending line, the maximum width variation value of the second gap is obtained, the second inner surface is the inner surface of the sealed box body opposite to the second side surface, and the second side surface comprises at least one side surface of the display substrate parallel to the second bending line.
4. The flexible display panel of claim 2 or 3,
when the flexible display panel is not bent, a gap exists between each side surface of the display substrate and the inner surface of the sealed box body opposite to the side surface.
5. The flexible display panel of claim 2 or 3,
when the flexible display panel is not bent, a gap exists between a first target side surface in the display substrate and an inner surface, opposite to the first target side surface, in the sealed box body, and a second target side surface, except the first target side surface, in the display substrate is fixedly connected with the inner surface of the sealed box body.
6. The flexible display panel of claim 5,
the flexible display panel further includes: a substrate connecting structure provided on an inner surface in the sealed case,
and the second target side surface of the display substrate is fixedly connected with the inner surface of the sealed box body through the substrate connecting structure.
7. The flexible display panel according to claim 6, wherein the sealing box has a sealing frame disposed between the two transparent cover plates, the two transparent cover plates and the sealing frame can form the cavity space, and the sealing frame and the substrate connecting structure are an integral structure.
8. The flexible display panel of claim 4,
transparent pasting media are filled in gaps between each bottom surface of the display substrate and the inner surface, opposite to the bottom surface, of the sealing box body, and the contact area of the transparent pasting media and the bottom surface is smaller than the area of the bottom surface.
9. The flexible display panel of any of claims 1-8, wherein the flexible display panel has a bending region and a non-bending region,
the transparent cover plate positioned in the bending area is made of transparent flexible materials, and the transparent cover plate positioned in the non-bending area is made of transparent hard materials.
10. The flexible display panel of any of claims 1-8, wherein the flexible display panel has a bending region and a non-bending region,
the transparent cover plate positioned in the bending area is made of transparent flexible materials, one part of the transparent cover plate positioned in the non-bending area is made of transparent hard materials, and the other part of the transparent cover plate is made of transparent flexible materials.
11. A flexible display panel, comprising:
the sealed box body, the inside cavity space that has of sealed box body, the sealed box body includes: the two transparent cover plates are parallel to each other, at least one part of each transparent cover plate is made of transparent flexible materials, and the cavity space is positioned between the two transparent cover plates;
the display substrate and the touch substrate are arranged in the cavity space in a superposed mode;
the transparent lubricating medium is filled in a gap between the cavity space and the display substrate, and the transparent lubricating medium is filled in a gap between the cavity space and the touch substrate;
the thickness direction of the display substrate, the thickness direction of the touch substrate and the thickness direction of the transparent cover plates are parallel, and the gap distance between the two transparent cover plates is larger than the superposition thickness of the display substrate and the touch substrate;
in the direction perpendicular to thickness place, when flexible display panel does not buckle, there is at least one clearance between display substrate and the sealed box body, for arbitrary the clearance, the minimum width in clearance is greater than or equal to and predetermines the width threshold value, it is to predetermine the width threshold value: and after the flexible display panel is bent from unbent to bending, the maximum width change value of the gap is obtained.
12. A terminal device, comprising: the flexible display panel of any one of claims 1 to 10, or the flexible display panel of claim 11.
13. The terminal device according to claim 12, wherein the terminal device further comprises: the display device comprises a driving chip and a flexible circuit board used for connecting the driving chip and a display substrate in the flexible display panel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192258.0A CN111047980B (en) | 2018-10-12 | 2018-10-12 | Flexible display panel and terminal equipment |
| PCT/CN2019/088182 WO2020073655A1 (en) | 2018-10-12 | 2019-05-23 | Flexible display panel and terminal device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192258.0A CN111047980B (en) | 2018-10-12 | 2018-10-12 | Flexible display panel and terminal equipment |
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| CN111047980A true CN111047980A (en) | 2020-04-21 |
| CN111047980B CN111047980B (en) | 2021-12-14 |
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| WO2020073655A1 (en) | 2020-04-16 |
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