CN112908171A - Flexible display device - Google Patents
Flexible display device Download PDFInfo
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- CN112908171A CN112908171A CN202110126241.0A CN202110126241A CN112908171A CN 112908171 A CN112908171 A CN 112908171A CN 202110126241 A CN202110126241 A CN 202110126241A CN 112908171 A CN112908171 A CN 112908171A
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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- Y02E10/549—Organic PV cells
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Abstract
The technical scheme of the application discloses a flexible display device, which is provided with a first supporting plate arranged opposite to a second surface of a display component, wherein the first supporting plate is provided with a first supporting part corresponding to a first plane display area, a second supporting part corresponding to a second plane display area and a third supporting part corresponding to a flexible display area, and the first supporting part and the second supporting part are respectively provided with three first sub-areas; in the three first sub-areas of the same supporting part, the middle first sub-area is a non-hollow area, and the two first sub-areas on the two sides are provided with hollow patterns. Through to the layout setting of different subregion fretwork figures in first support part with the second support part, can cushion the stress of flexible display device in bending process, solved the problem of fold, improved the roughness of flexible display device under the exhibition state.
Description
Technical Field
The application relates to the technical field of electronic equipment, in particular to a flexible display device.
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 for realizing the display function is the display device, and the flexible display device has different forms, so that different use requirements of users can be met, and the flexible display device becomes a mainstream development direction of the current display device.
The flexible display device mainly comprises a flexible display panel and a plurality of layers of different functional components which are fixedly attached with the flexible display panel. The existing flexible display device has the problem of wrinkles in the using process.
Disclosure of Invention
In view of the above, the present application provides a flexible display apparatus, which comprises:
a flexible display device is in a flattening state and is provided with a first plane display area, a flexible display area and a second plane display area which are sequentially arranged in a first direction;
the flexible display device includes:
a display assembly having opposing first and second surfaces, the first surface being a display surface;
a first support plate disposed opposite the second surface;
wherein the first support plate has a first support portion corresponding to the first planar display area, a second support portion corresponding to the second planar display area, and a third support portion corresponding to the flexible display area; in the first direction, the first support part and the second support part respectively comprise three first sub-areas which are sequentially arranged; in the three first sub-areas of the same supporting part, the middle first sub-area is a non-hollow area, and the two first sub-areas on the two sides are provided with hollow patterns.
Preferably, in the flexible display device described above, the flexible display region includes: a first outward bending region, an inward bending region and a second outward bending region which are sequentially arranged in the first direction;
the third supporting part is provided with three second sub-areas which are respectively opposite to the first outward bending area, the inward bending area and the second outward bending area, the second sub-areas are provided with hollowed-out patterns, the second sub-area in the middle is provided with a first hollowed-out pattern, and the two second sub-areas on two sides are provided with second hollowed-out patterns; the first hollow pattern is different from the second hollow pattern.
Preferably, in the flexible display device, of the two first sub-areas having the hollow patterns in the first supporting portion, the first sub-area far away from the third supporting portion has the second hollow pattern, and the first sub-area near the third supporting portion has a third hollow pattern;
the third hollowed-out pattern is different from the first hollowed-out pattern and the second hollowed-out pattern; the second supporting part and the first supporting part are provided with mutually symmetrical hollow-out patterns.
Preferably, in the flexible display device, the first hollow pattern includes a plurality of first slits penetrating through the first support plate, and the first slits extend in a second direction; the second direction and the first direction meet a vertical condition;
the second hollow pattern comprises a plurality of second slits penetrating through the first supporting plate, and the second slits extend along the second direction;
the third hollowed-out pattern comprises a plurality of third slits penetrating through the first support plate, and the third slits extend along the second direction;
wherein an area of the first slot is greater than an area of the second slot, and the area of the second slot is equal to an area of the third slot; the area occupation ratio of the first slot in the sub-area is larger than that of the second slot in the sub-area, and the area occupation ratio of the second slot in the sub-area is larger than that of the third slot in the sub-area.
Preferably, in the flexible display device described above, the flexible display region includes: a first outward bending region, an inward bending region and a second outward bending region which are sequentially arranged in the first direction;
further comprising: a second support plate disposed between the first support plate and the display assembly; the second support plate has three third sub-regions corresponding to the first outward bending region, the inward bending region, and the second outward bending region, respectively; and the two third sub-areas on two sides are provided with fourth hollow patterns.
Preferably, in the flexible display device, in the third sub-area having the fourth hollow pattern, two end regions opposite to each other in the second direction have the fourth hollow pattern, and a middle region between the two end regions is a non-hollow region; the second direction is perpendicular to the first direction.
Preferably, in the flexible display device, in the third sub-area having the fourth hollow pattern, the fourth hollow pattern is uniformly distributed in the third sub-area.
Preferably, in the flexible display device, the fourth hollow pattern includes a plurality of fourth slits penetrating through the second support plate, and the fourth slits extend in the second direction; the length of the fourth slot is 2.2mm, the width of the fourth slot is 0.2mm, the distance in the first direction is 0.2mm, and the distance in the second direction is 0.2-0.3 mm; the second direction is perpendicular to the first direction.
Preferably, in the above flexible display device, a thickness of the second support plate is smaller than a thickness of the first support plate;
and at least part of the hollow area of the hollow pattern in the first supporting plate is shielded by the second supporting plate.
Preferably, in the flexible display device, for two first sub-regions having the first hollow pattern in the same support portion, a width of the first sub-region close to the flexible display region in the first direction is smaller than a width of the first sub-region far from the flexible display region in the first direction.
Preferably, in the flexible display device, in the first support plate, a hollow area of the hollow pattern is filled with a light-proof material.
As can be seen from the above description, in the flexible display device provided in the present application, a first support plate is disposed opposite to the second surface of the display component, the first support plate has a first support portion corresponding to the first planar display area, a second support portion corresponding to the second planar display area, and a third support portion corresponding to the flexible display area, and the first support portion and the second support portion are each disposed to include three first sub-areas; in the three first sub-areas of the same supporting part, the middle first sub-area is a non-hollow area, and the two first sub-areas on the two sides are provided with hollow patterns. Through to the layout setting of different subregion fretwork figures in first support part with the second support part, can cushion the stress of flexible display device in bending process, solved the problem of fold, improved the roughness of flexible display device under the exhibition state.
Wherein, of the three first sub-regions of the first support portion: the first hollow pattern in the first sub-area close to the flexible display area can buffer stress generated when the flexible display is bent, solve the problem of wrinkles generated due to bending and improve the flatness of the flexible display device in a flattened state; the first hollow pattern in the first sub-area far away from the flexible display area can greatly reduce the weight of the first supporting plate, so that the device is designed to be light and thin and is convenient to carry and use; the first sub-area that is located the centre is non-fretwork district for produced gum glue trace when eliminating the laminating guarantees the roughness, and one side that flexible display device deviates from the display module need set up the gum in order to fix on the backshell.
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 flexible display device according to an embodiment of the present application in a flattened state;
FIG. 2 is a side view of the flexible display device shown in FIG. 1;
FIG. 3 is a top view of one implementation of a first support plate of the flexible display device of FIG. 1;
FIG. 4 is a side view of the flexible display device of FIG. 1 in a flexed state;
FIG. 5 is a top view of another implementation of a first support plate of the flexible display device shown in FIG. 1;
fig. 6 is a schematic structural diagram of a hollow pattern provided in the embodiment of the present application;
FIG. 7 is a side view of a flexible display apparatus according to an embodiment of the present application;
FIG. 8 is a top view of a second support plate in the flexible display device of FIG. 7;
FIG. 9 is a top view of a second support plate according to an embodiment of the present disclosure;
FIG. 10 is a partially enlarged view of a fourth hollow pattern according to an embodiment of the present disclosure;
fig. 11 is a cross-sectional view of a display module according to an embodiment of the present application.
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.
Referring to fig. 1 to fig. 3, fig. 1 is a top view of a flexible display device provided in an embodiment of the present application in a flattened state, fig. 2 is a side view of the flexible display device shown in fig. 1, and fig. 3 is a top view of an implementation manner of a first support plate in the flexible display device shown in fig. 1. The flexible display device is in a flat state and has a first planar display area 111, a flexible display area 113 and a second planar display area 112 which are sequentially arranged in a first direction X. The widths of the two flat display areas in the first direction X may be set to be the same, and the width ratio of the three display areas in the flexible display apparatus in the first direction X may be set based on parameters of a desired bending state of the device.
The flexible display device includes: a display assembly 10, the display assembly 10 having a first surface S1 and a second surface S2 opposite, the first surface S1 being a display surface; a first support plate 12, the first support plate 12 being disposed opposite the second surface S2. The first support plate 12 may be a stainless steel plate or other metal plate or alloy plate. The rigidity of the first supporting plate 12 is greater than that of the flexible display assembly, so that the flexible display device can be well flattened after being bent, has good strength, and can avoid impact damage. The first support plate 12 and the display module 10 satisfy the condition of the same size, and the edges of the two can be overlapped.
Wherein the first support plate 12 has a first support portion 121 corresponding to the first flat display area 111, a second support portion 122 corresponding to the second flat display area 112, and a third support portion 123 corresponding to the flexible display area 113. The three supporting parts in the first supporting plate 12 are respectively arranged opposite to the corresponding display areas in the display assembly 10. In the first direction X, the first support portion 121 and the second support portion 122 each include three first sub-regions a arranged in sequence. As shown in fig. 3, in the first direction X, the three first sub-areas a in the first support portion 121 include: a first sub-area a1, a second first sub-area a2, and a third first sub-area A3 arranged in this order, the widths of the three first sub-areas a in the first support part 121 decreasing in this order in the first direction X; in the first direction X, the three first sub-areas a in the second support portion 122 include: the widths of the first sub-area a of the second support part 122 sequentially increase in the first direction X, with the first sub-area a1, the first sub-area a2, and the first sub-area a3 being sequentially arranged.
In the three first sub-areas A of the same supporting part, the middle first sub-area A is a non-hollow area, and the two first sub-areas A on the two sides are provided with hollow patterns. As shown in fig. 3, in the first supporting portion 121, the first sub-area a1 and the third sub-area A3 located at two sides have a hollow pattern, the second sub-area a2 located at the middle is a non-hollow area, in the second supporting portion 122, the first sub-area a1 and the third sub-area A3 located at two sides have a hollow pattern, and the second sub-area a2 located at the middle is a non-hollow area.
In the embodiment of the application, through right in the first supporting part 121 with the layout setting of different subregion fretwork figures in the second supporting part 122, the stress of the flexible display device in bending process can be buffered, the problem of fold is solved, and the flatness of the flexible display device in the flattening state is improved.
As shown in fig. 1, the flexible display area 113 includes: a first outward bending region 1131, an inward bending region 1133, and a second outward bending region 1132, which are sequentially arranged in the first direction X.
As shown in fig. 4, fig. 4 is a side view of the flexible display device in a bending state, the flexible display device is a folded-in display device, and the display surfaces of the first planar display area 111 and the second planar display area 112 can be relatively covered based on the bending of the flexible display area 113. When the first and second flat display areas 111 and 112 satisfy the parallel condition, the inward bending area 1133 located in the middle area of the flexible display area 113 bends toward the display surface, and the first outward bending area 1131 and the second outward bending area 1132 bend away from the display surface.
Referring to fig. 5, fig. 5 is a top view of another implementation of the first support plate in the flexible display device shown in fig. 1, and based on the implementation shown in fig. 3, in the implementation shown in fig. 5, the third support portion 123 has three second sub-regions BB3 opposite to the first outward bending region 1131, the inward bending region 1133, and the second outward bending region 1132, respectively. The three second sub-regions B in the third supporting portion 123 are disposed opposite to the corresponding bending regions in the bendable display region 113.
The three second sub-areas B in the third support portion 123 include: a first second sub-region B1, a second sub-region B2, and a third second sub-region B3 arranged in this order in the first direction X. The second sub-area B is provided with hollow patterns, the middle second sub-area B2 is provided with a first hollow pattern, and the two second sub-areas B1 and B3 on the two sides are provided with second hollow patterns; the first hollow pattern is different from the second hollow pattern. Optionally, the first hollow patterns may be uniformly distributed in the second sub-area B2, obviously, in other manners, the first hollow patterns may also be uniformly distributed in the second sub-area B2, the second hollow patterns may be uniformly distributed in the second sub-areas B1 and B3, obviously, in other manners, the second hollow patterns may also be non-uniformly distributed in the second sub-areas B1 and B3.
In the third supporting part 123, the second hollow patterns in the first second sub-area B1 and the third second sub-area B3 are symmetrically arranged, so as to achieve a better bending stress buffering effect.
As shown in fig. 5, of the two first sub-areas a having the hollow patterns in the first supporting portion 121, the first sub-area a1 far away from the third supporting portion 123 has the second hollow pattern, and the first sub-area A3 near the third supporting portion 123 has the third hollow pattern. Wherein the third hollow pattern is different from both the first hollow pattern and the second hollow pattern. The second supporting portion 122 and the first supporting portion 121 have hollow patterns which are symmetrical to each other, so as to achieve a better bending stress buffering effect. The sub-regions where the third hollow patterns are uniformly distributed can be set, and in other ways, the sub-regions where the third hollow patterns are non-uniformly distributed can also be set.
As shown in fig. 6, fig. 6 is a schematic structural diagram of a hollow pattern provided in the embodiment of the present application, a left diagram in fig. 6 is a partial enlarged view of a first hollow pattern, a middle diagram is a partial enlarged view of a second hollow pattern, and a right diagram is a partial enlarged view of a third hollow pattern. The first hollow pattern comprises a plurality of first slits K1 penetrating through the first support plate, and the first slits K1 extend along a second direction Y; the second hollow pattern comprises a plurality of second slits K2 penetrating through the first support plate, and the second slits K2 extend along the second direction Y; the third hollow pattern comprises a plurality of third slits K3 penetrating through the first support plate, and the third slits K3 extend along the second direction Y; the second direction Y and the first direction meet a vertical condition; the second direction Y is parallel to the display surface in the flattened state. The first slit K1, the second slit K2 and the third slit K3 are all strip-shaped structures with convex arc structures at two ends.
Wherein an area of the first slit K1 is greater than an area of the second slit K2, an area of the second slit K2 is equal to an area of the third slit K3; the area occupation ratio of the first slit K1 in the sub-area is larger than that of the second slit K2 in the sub-area, and the area occupation ratio of the second slit K2 in the sub-area is larger than that of the third slit K3 in the sub-area, so that a better buffering bending stress effect is realized.
The first slit K1, the second slit K2, and the third slit K3 may be provided to have the same width and different lengths in the first direction so as to form slits of three different lengths. As shown in fig. 6, the first slits K1 may be set to have a length of 3mm and a width of 0.2mm, and have a pitch of 0.15mm in the first direction and a pitch of 0.2mm in the second direction Y; the length of the second slit K2 is 2.2mm, the width thereof is 0.2mm, the distance in the first direction is 0.2mm, and the distance in the second direction Y is 0.3 mm; the third slit K3 has a length of 2.2mm and a width of 0.2mm, and has a pitch in the first direction of 0.4mm and a pitch in the second direction Y of 0.3 mm. It should be noted that the sizes of the three different slits and the distances between the first direction and the second direction Y may be set based on requirements, and are not limited to the values described in the embodiments of the present application.
As shown in fig. 7 and 8, fig. 7 is a side view of a flexible display device according to an embodiment of the present application, and fig. 8 is a top view of a second support plate in the flexible display device shown in fig. 7. With reference to fig. 1, 7 and 8, the flexible display area 113 includes: a first outward bending region 1131, an inward bending region 1133, and a second outward bending region 1132, which are sequentially arranged in the first direction X. The flexible display device further comprises: a second support plate 13 disposed between the first support plate 12 and the display assembly 10. The second support plate 13 may be a stainless steel plate or other metal plate or alloy plate. The stiffness of the second support plate 13 is greater than the stiffness of the flexible display assembly, enabling the flexible display device to be better flattened after bending. The second support plate 13, the display assembly 10 and the first support plate 12 satisfy the same condition of size, and the edges of the three can be overlapped.
The second support plate 13 has three third sub-regions C corresponding to the first outward bending region 1131, the inward bending region 1133, and the second outward bending region 1132, respectively. The three third sub-regions C of the second support plate 13 include a first third sub-region C1, a second third sub-region C2, and a third sub-region C3, which are sequentially arranged in the first direction X. In the first direction X, two third sub-regions C1, C3 on two sides have fourth hollow patterns. The three third sub-regions C of the second support plate 13 are respectively disposed opposite to the corresponding bending regions in the bendable display region 113.
In the third sub-regions C1 and C3 having the fourth hollow patterns, at least two end regions opposite to each other in the second direction Y have the fourth hollow patterns, so as to solve the problem of adhesive layer cohesion at the side wall edges.
In the three third sub-areas C of the second support plate 13, the middle third sub-area C2 may be a non-hollow area, and in other manners, the middle third sub-area C2 may also have a hollow pattern. The portion of the second supporting plate 13 opposite to the first planar display area 111 and the second planar display area 112 may be a non-hollow area, and in other ways, the portion may also be provided with a hollow pattern.
In the embodiment shown in fig. 8, in the third sub-areas C1 and C3 having the fourth hollow pattern, the fourth hollow pattern is provided in two end areas opposite to each other in the second direction Y, and a middle area between the two end areas is a non-hollow area. The fourth hollow patterns can be uniformly distributed in each end region, and the fourth hollow patterns can also be non-uniformly distributed in each end region in a gas mode. The two end regions of the first third sub-region C1 opposite to each other in the second direction Y have the fourth hollow pattern, and a middle region between the two end regions is a non-hollow region. The third sub-area C3 has the fourth hollow pattern at two opposite end areas in the second direction Y, and a middle area between the two end areas is a non-hollow area. As described above, the second direction Y is perpendicular to the first direction X. In order to achieve a better bending stress buffering effect, the hollow patterns in the first third sub-area C1 and the third sub-area C2 are arranged to be symmetrical to each other. The lengths of the end regions and the non-hollow-out regions in the third sub-regions C1 and C3 in the second direction Y may be set based on requirements, which is not specifically limited in this embodiment of the application.
As shown in fig. 9, fig. 9 is a top view of a second supporting plate according to an embodiment of the present invention, in this manner, in the third sub-areas C1 and C3 where the second supporting plate 13 has the fourth hollow patterns, all of the third sub-area C and all of the third sub-area C3 have the fourth hollow patterns, the fourth hollow patterns may be uniformly distributed in the third sub-area C1 and C3, and in other manners, the fourth hollow patterns may also be non-uniformly distributed in the third sub-areas C1 and C3.
As shown in fig. 10, fig. 10 is a partial enlarged view of a fourth hollow pattern provided in the embodiment of the present application, where the fourth hollow pattern includes a plurality of fourth slits K4 penetrating through the second supporting plate, and the fourth slits K4 extends along the second direction Y.
Wherein the length of the fourth slit K4 is 2.2mm, the width thereof is 0.2mm, the distance in the first direction X is 0.2mm, and the distance in the second direction Y is 0.2-0.3 mm; as mentioned above, the second direction Y is perpendicular to the first direction X. It should be noted that, the size of the fourth slit and the distance between the fourth slit and the fourth slit in the first direction and the second direction may be set based on requirements, and are not limited to the values given in the embodiments of the present application.
In the flexible display device of the embodiment of the present application, the thickness of the second supporting plate 13 is smaller than the thickness of the first supporting plate 12, so that in the completed state, the thinner second supporting plate 13 can be more easily bent along with the display component 10, and the cohesion problem of the optical adhesive with larger thickness between the display component 10 and the first supporting plate 12 is avoided.
In the flexible display device according to the embodiment of the present application, the hollow area of the hollow pattern in the first supporting plate 12 is at least partially covered by the second supporting plate 13. The hollow area of the hollow pattern in the first support plate 12 can be completely covered by the second support plate 13. The first supporting plate 13 at least partially covers the hollow area of the hollow pattern in the second supporting plate 13, and the first supporting plate 13 can be set to completely cover the hollow area of the hollow pattern in the second supporting plate 13. Thus, light leakage from the second surface of the flexible display device can be avoided.
As shown in fig. 1, 5, 6, 8-10, the first third sub-area C1 and the third sub-area C3 corresponding to the two outward bending areas on the second supporting plate 13 have a fourth hollow pattern, and the other parts are all non-hollow areas. Therefore, in the two plane display areas, the hollow patterns on the first supporting plate 12 can be shielded by the second supporting plate 13; in the inward bend 1133 of the flexible display area 113, the hollow pattern on the first support plate 12 can be shielded by the non-hollow area (the second third sub-area C2) of the second support plate 13. The fourth slit K4 in the first third sub-area C1 is arranged offset from the second slit K2 in the first second sub-area B1, i.e. it does not overlap, and the fourth slit K4 in the third sub-area C3 is arranged offset from the second slit K2 in the third second sub-area B1, i.e. it does not overlap, so that in the two outward bending areas, complete shading of the first support plate 12 by the second support plate 13 is achieved by the first third sub-area C1 and the third sub-area C3 shielding the second slit K2 in the first second sub-area B1 and the third second sub-area B1, respectively.
In other manners, in order to avoid light leakage in the hollow area of the hollow pattern in the first support plate 12, the hollow area of the hollow pattern in the first support plate 12 may be filled with a light-proof material, and the light-proof material may be black filling glue. The portions of the second supporting plate 13 corresponding to the two flat display areas are non-hollow areas, and can well shield the hollow areas of the first supporting plate 12 corresponding to the portions.
As shown in fig. 11, fig. 11 is a cross-sectional view of a display module according to an embodiment of the present disclosure, and the display module 10 includes a lower protective film 101, a flexible touch display surface 102, a polarizer 103, an adhesive layer 104, and a transparent upper protective film 105, which are sequentially stacked in a third direction. The touch display surface 102 includes any one of an OLED panel, a MINI LED panel, and a MICRO LED panel.
Referring to fig. 2 and 11, when only the first support plate 12 is disposed, the first support plate 12 is fixed to the display module 10 through a glue layer, and may be fixed to a surface of the lower protective film 101 facing away from the touch display surface 102.
Referring to fig. 7 and 11, when the first support plate 12 and the second support plate 13 are disposed simultaneously, the first support plate 12 and the second support plate 13 are fixed to the display module 10, the second support plate 13 is fixed to a side surface of the first support plate 12 facing away from the display module 10, the first support plate 12 can be fixed to a side surface of the lower protective film 101 facing away from the touch display surface 102 through an adhesive layer, the second support plate 13 is fixed to a side surface of the first support plate 12 facing away from the touch display surface 102, and the two support plates can be fixed to each other through an adhesive layer. In the embodiment of the present application, the Adhesive layer may be an Optical Clear Adhesive (OCA) or other types of adhesives.
When the flexible display device is bent as shown in fig. 4, a droplet-shaped outward bending region is formed in the flexible display region 113. If a conventional support plate without a hollow pattern is adopted, the problems that the adhesive layer fails due to cohesion and the touch function is failed due to display in an outward bending area are solved mainly because the support plates on two sides of the adhesive layer are different from the lower protective film in material properties, the support plates are generally stainless steel sheets mainly due to different rigidity of the support plates and the lower protective film is made of a polymer material, the two materials are not asynchronous in motion trend in the bending process and have larger difference, and the adhesive layer is partially failed due to the fact that the two support plates and the lower protective film exert opposite forces. Such failure of the flexible display device at the side of the flexible display area is made more likely due to the influence of material effects. On the other hand, the unfolded folded screen also has poor surface flatness after dynamic bending or static bending.
In this application embodiment, first backup pad and second backup pad have the fretwork figure, can increase pliability. The second backup pad has the fretwork region in the outside bending region, and at the in-process of buckling, the second backup pad can follow display module and crooked in step together to avoid between second backup pad and the display module assembly the glue film cohesive force problem of inefficacy to appear, solve outside bending region's bending problem of inefficacy.
The inward bend 1133 has a smaller bend radius, about 3mm and less, and the bend radius is set based on the requirement, but is not limited to 3 mm. The first support plate is provided with the first hollow pattern in the middle second sub-area B2, so that the stress of the second sub-area B2 can be reduced, and the bending performance of the device is enhanced.
The outward bending zone has a relatively large bending radius of about 20mm or more, which is set on demand and is not limited to 3 mm. The first supporting plate is provided with second hollow patterns in two second sub-areas B1 and B3 on two sides, so that better restorability can be realized, and flatness during flattening is guaranteed.
The first support plate is provided with three first sub-areas A at the first support part corresponding to the first plane display area, a third first sub-area A3 adjacent to the first outward bending area 1131 is provided with a third hollow pattern which can release stress generated when the first outward bending area 1131 is bent, and a second first sub-area A2 is a non-hollow area and is used for eliminating glue marks generated during fitting and ensuring flatness; the width of a first subregion A is the biggest, can reduce the weight of first backup pad by a wide margin to realize the design of device frivolousization, portable and use.
The flexible display device can be a mobile phone, a notebook computer and a tablet computer. By adopting the technical scheme, the weight of the device can be greatly reduced, the light and thin design is realized, and the flatness is also improved.
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.
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 flexible display device is in a flattening state and is provided with a first plane display area, a flexible display area and a second plane display area which are sequentially arranged in a first direction;
the flexible display device includes:
a display assembly having opposing first and second surfaces, the first surface being a display surface;
a first support plate disposed opposite the second surface;
wherein the first support plate has a first support portion corresponding to the first planar display area, a second support portion corresponding to the second planar display area, and a third support portion corresponding to the flexible display area; in the first direction, the first support part and the second support part respectively comprise three first sub-areas which are sequentially arranged; in the three first sub-areas of the same supporting part, the middle first sub-area is a non-hollow area, and the two first sub-areas on the two sides are provided with hollow patterns.
2. The flexible display device of claim 1, the flexible display region comprising: a first outward bending region, an inward bending region and a second outward bending region which are sequentially arranged in the first direction;
the third supporting part is provided with three second sub-areas which are respectively opposite to the first outward bending area, the inward bending area and the second outward bending area, the second sub-areas are provided with hollowed-out patterns, the second sub-area in the middle is provided with a first hollowed-out pattern, and the two second sub-areas on two sides are provided with second hollowed-out patterns; the first hollow pattern is different from the second hollow pattern.
3. The flexible display device according to claim 2, wherein the first support portion comprises two first sub-regions having hollow patterns, the first sub-region away from the third support portion comprises the second hollow pattern, and the first sub-region close to the third support portion comprises a third hollow pattern;
the third hollowed-out pattern is different from the first hollowed-out pattern and the second hollowed-out pattern; the second supporting part and the first supporting part are provided with mutually symmetrical hollow-out patterns.
4. The flexible display device of claim 3, the first cut out graphic comprising a plurality of first slits extending through the first support plate, the first slits extending in a second direction; the second direction and the first direction meet a vertical condition;
the second hollow pattern comprises a plurality of second slits penetrating through the first supporting plate, and the second slits extend along the second direction;
the third hollowed-out pattern comprises a plurality of third slits penetrating through the first support plate, and the third slits extend along the second direction;
wherein an area of the first slot is greater than an area of the second slot, and the area of the second slot is equal to an area of the third slot; the area occupation ratio of the first slot in the sub-area is larger than that of the second slot in the sub-area, and the area occupation ratio of the second slot in the sub-area is larger than that of the third slot in the sub-area.
5. The flexible display device of claim 1, the flexible display region comprising: a first outward bending region, an inward bending region and a second outward bending region which are sequentially arranged in the first direction;
further comprising: a second support plate disposed between the first support plate and the display assembly; the second support plate has three third sub-regions corresponding to the first outward bending region, the inward bending region, and the second outward bending region, respectively; and the two third sub-areas on two sides are provided with fourth hollow patterns.
6. The flexible display device according to claim 5, wherein in the third sub-area having the fourth hollow pattern, two end regions opposite to each other in the second direction have the fourth hollow pattern, and a middle region between the two end regions is a non-hollow region; the second direction is perpendicular to the first direction.
7. The flexible display device according to claim 5, wherein the third sub-area having the fourth hollow pattern is uniformly distributed in the third sub-area.
8. The flexible display device of claim 5, a thickness of the second support plate being less than a thickness of the first support plate;
and at least part of the hollow area of the hollow pattern in the first supporting plate is shielded by the second supporting plate.
9. The flexible display device according to claim 5, wherein for two first sub-regions having the first hollow pattern in the same support portion, a width of the first sub-region close to the flexible display region in the first direction is smaller than a width of the first sub-region far from the flexible display region in the first direction.
10. The flexible display device of claim 1, wherein the first support plate has a hollow area with a hollow pattern filled with an opaque material.
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| CN202110126241.0A CN112908171B (en) | 2021-01-29 | 2021-01-29 | Flexible display device |
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| CN202110126241.0A CN112908171B (en) | 2021-01-29 | 2021-01-29 | Flexible display device |
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| CN112908171B CN112908171B (en) | 2022-08-19 |
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| CN112908171B (en) | 2022-08-19 |
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