CN113744632B - Display module and display device - Google Patents
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- CN113744632B CN113744632B CN202010469034.0A CN202010469034A CN113744632B CN 113744632 B CN113744632 B CN 113744632B CN 202010469034 A CN202010469034 A CN 202010469034A CN 113744632 B CN113744632 B CN 113744632B
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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
- G09F9/301—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
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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Abstract
The invention relates to a display module and a display device. The display module comprises a flexible display panel, a display part and a binding part, wherein the flexible display panel comprises a bending part and display parts and binding parts are positioned on two sides of the bending part; the support structure is arranged on one side of the non-display surface and is supported between the display part and the binding part; the display part comprises a main display part and an edge display part which is positioned at one side of the main display part and is adjacent to the main display part; the support structure comprises a first support part, wherein the first support part is supported between the edge display part and the binding part, and the first support part is provided with a stress release unit so that the bendable characteristic parameters of the first support part meet preset bendable rules. According to the display module and the display device provided by the invention, the bending characteristic parameters of the first supporting part can be changed through the stress release unit so as to meet the preset bending rule, so that the stress concentration of the first supporting part is not easy to cause due to bending, and the screen body is ensured not to be damaged.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display module and a display device.
Background
In order to drive the display panel to work, a binding portion is generally provided in the display panel for binding and electrically connecting with other electronic devices. Since the binding portion cannot perform image display to affect the screen ratio, the binding portion of the flexible display panel is typically bent to the back side of the flexible display panel, so as to improve the screen ratio of the flexible display panel.
In addition, when bending the flexible display panel, in order to determine and fix the bending angle of the flexible display panel, a spacer is generally disposed in the bending region to achieve a desired bending effect.
However, as the demand for display devices has increased, display panels for multi-curved display (e.g., four curved surfaces) have grown, further increasing the viewable area of the display devices. However, at the same time, the partial areas of the elevating blocks are bent, so that stress concentration is easy to occur, and the screen body is damaged.
Disclosure of Invention
Accordingly, the present invention provides a display module and a display device capable of improving the above problems, and effectively improving the problem that the bending of the spacer is easy to cause stress concentration, and the screen is damaged.
According to an aspect of the present application, there is provided a display module, including:
the flexible display panel comprises a bending part, a display part and a binding part, wherein the display part and the binding part are positioned on two sides of the bending part;
the support structure is arranged on one side of the non-display surface of the flexible display panel and is supported between the display part and the binding part;
the display part comprises a main display part and an edge display part which is positioned at one side of the main display part and is adjacent to the main display part;
the support structure comprises a first support part, wherein the first support part is supported between the edge display part and the binding part;
the first support part is provided with a stress release unit so that the bendable characteristic parameter of the first support part meets a preset bendable rule.
In an embodiment, the stress relief unit comprises at least one stress relief;
the first support part forms at least one stress relief area capable of relieving stress by means of the stress relief part.
In one embodiment, the stress releasing portion is a groove formed on the surface of the first supporting portion;
the first supporting part comprises a first surface facing one side of the edge display part and a second surface facing one side of the binding part, and the groove is formed in the first surface and/or the second surface;
preferably, the first surface and the second surface are respectively provided with the grooves;
the projections of the grooves formed in the first surface and the projections of the grooves formed in the second surface and the projections of the grooves formed in the display portion are staggered in a preset direction.
In one embodiment, a plurality of grooves are arranged at intervals along the longitudinal extension direction of the first supporting part; or alternatively
The groove extends continuously along the longitudinal extending direction of the first supporting portion.
In an embodiment, the cross-sectional shape of the groove in the direction of the display surface of the flexible display panel toward the non-display surface is triangular, inverted trapezoidal, rectangular or arc.
In one embodiment, the stress relief is configured as a through hole provided in the first support.
In an embodiment, the through hole penetrates the first supporting portion along a longitudinal extending direction of the first supporting portion; or alternatively
The through hole penetrates through the first supporting part along the direction that the display surface of the flexible display panel points to the non-display surface.
In one embodiment, the stress relief is configured as a cavity provided within the first support;
preferably, the plurality of cavities are arranged at intervals along the longitudinal extension direction of the first supporting part.
In one embodiment, the first support part has a first region and a second region adjacent to the first region;
the first region is closer to the curved portion of the flexible display panel than the second region;
the second region has a modulus of elasticity greater than the modulus of elasticity of the first region.
In another aspect of the present application, a display device is provided, including the display module set described above.
According to the display module and the display device, the stress release unit is arranged on the first support portion between the edge display portion of the flexible display panel and the bending extension portion of the binding portion, and the bending characteristic parameters of the first support portion can be changed through the stress release unit to meet the preset bending rule.
Drawings
FIG. 1 is a schematic diagram of a display device according to an embodiment of the invention;
FIG. 2 is a schematic partial cross-sectional view of a display device according to an embodiment of the invention;
FIG. 3 is a schematic partial cross-sectional view of a display device according to another embodiment of the present invention;
FIG. 4 is a schematic partial cross-sectional view of a display device according to another embodiment of the present invention;
FIG. 5 is a schematic partial cross-sectional view of a display device according to another embodiment of the invention;
fig. 6 is a schematic partial cross-sectional view of a display device according to still another embodiment of the present invention.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
One or more embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which elements such as shapes, sizes, proportions, angles, and numbers of elements are merely examples, and in which identical or corresponding elements are shown with the same reference numerals in different embodiments, and duplicate descriptions are omitted.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Where the terms "comprising," "having," and "including" are used herein, another component may also be added unless explicitly defined as such, e.g., "consisting of … …," etc. Unless mentioned to the contrary, singular terms may include plural and are not to be construed as being one in number.
It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present invention.
As described in the background, the flexible display panel is often provided with a binding portion, and the binding portion is provided with a plurality of connection pins, and the connection pins are used for binding with other electronic devices and electrically connecting with the other electronic devices, so as to drive the flexible display panel to work normally. Because the binding part can not display images, the area of the non-display area of the flexible display panel can be increased by the setting of the binding part, so that the screen occupation ratio is greatly influenced, and the realization of a real comprehensive screen is not facilitated. In order to obtain better experience and further increase the display area, a cover plate with edges having multiple curved surfaces is generally adopted to attach to the flexible display panel, and the binding portion of the flexible display panel is bent to the back side of the display surface, so that multi-edge display of the flexible display panel is realized and the visual area is further increased.
However, there is a need for a flexible display panel that is not necessarily supported or fixed between the bent portion and the edge portion thereof, which is adjacent to the bent portion, so that the edge of the flexible display panel is easily moved or dislocated due to the influence of external environment, such as extrusion or impact, and thus the structure and performance of the flexible display panel are adversely affected. In addition, since a support is lacking between the bent portion of the flexible display panel after bending and the edge portion near the bent portion, when the flexible display panel is bent, the bending angle of the flexible display panel is difficult to determine and fix, and the bending effect of the flexible display panel is difficult to ensure.
For this reason, the related art provides a solution in which a spacer is provided between a bent portion of a flexible display panel and an edge portion near the bent portion, and upper and lower surfaces of the spacer are covered with adhesive layers to be adhered to the flexible display panel so as to be fixed to the flexible display panel. The elevating block can provide stable support for the bending part and the edge part of the flexible display panel, avoids or reduces the phenomenon of movement or dislocation and the like of the edge of the flexible display panel, and can ensure the gentle transition of the bending radius of the flexible display panel and has better bending effect.
In the display module with multi-curved surface display, especially in the display module with four curved surfaces display, the edge of the flexible display panel is bent and extended, and the spacer block is also bent to a certain extent along with the flexible display panel, so that a horizontal extension part extending along the horizontal direction and a bending extension part bending and extending towards one side of the horizontal extension part are formed, and the bending extension part is easy to generate stress concentration phenomenon due to bending, so that the bending extension part is highly likely to generate fold deformation, or the bending extension part is rebounded to be in a flat state under the action of restoring force, so that the bending extension part of the spacer block is separated from the flexible display panel, and the screen body is damaged.
Accordingly, it is desirable to provide a solution that reduces the concentration of bending extension stress of the spacer blocks.
Next, a display module according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 shows a schematic structural view of a display device in an embodiment of the present application, and fig. 2 shows a schematic partial sectional view of the display device in an embodiment of the present application. For convenience of description, the drawings show only structures related to the embodiments of the present invention.
Referring to the drawings, a display device 100 in an embodiment of the present application includes a display module 10 and a cover 20. The cover 20 may be attached to the display module 10 by an adhesive layer 30.
Specifically, the cover plate 20 serves to protect the display module 10 from external impact and to prevent external moisture or oxygen from penetrating into the light emitting elements of the display module 10 that are susceptible to external moisture or oxygen. In some embodiments, the adhesive layer may be an OCA optical adhesive layer, the display module 10 may be attached to the cover plate 20 through the OCA optical adhesive layer, and the cover plate 20 may be made of glass, quartz, plastic, metal, or the like. As one embodiment, the cover 20 is a glass cover.
Meanwhile, in order to obtain front and side displays of the display device 100 to realize curved display, the cover plate 20 includes a flat region 21 and a curved region 22, and the curved region 22 is located at least one side of the flat region 21 and smoothly transitions with the flat region 21. It should be understood that the location of the curved region 22 on one side of the cover 20 means that the display device 100 has a front display area and a side display area, while the location of the curved region 22 on one side of the cover 20 may form a defined outline of the side display area of the display device 100. That is, the display module 10 is bonded to the curved region 22 of the cover 20, and the light-transmitting curved region 22 allows the display device 100 to display on the side.
In particular, in one embodiment, the flat region 21 is located at a middle position of the cover 20, and is a relatively flat region on the cover 20, and the curved region 22 is located at two lateral sides and/or longitudinal sides of the cover 20, and is a region formed by bending or bending back at two lateral sides and/or longitudinal sides of the flat region 21. Preferably, the curved portions 23 located on both lateral and/or longitudinal sides of the flat region 21 are symmetrically disposed.
It will be appreciated that the cover 20 may also be a contoured cover, where contoured cover 20 refers to a curved design that tends to curve inwardly of the cover 20. For example, in some embodiments, the bending angle of the bending region 22 of the cover plate 20 is 180 degrees. Of course, in other embodiments, the bending angle of the bending zone 22 may be between 90 degrees and 180 degrees or even greater than 180 degrees.
The display module 10 includes a flexible display panel 11, and the flexible display panel 11 has a display surface and a non-display surface disposed opposite to each other. It will be appreciated that the display surface may display images and the non-display surface may not display images.
Specifically, the flexible display panel 11 includes a curved portion 111, and a display portion 112 and a binding portion 113 located on both sides of the curved portion 111. The display unit 112 is provided with a display layer group on a side facing the display surface, and the display layer group has a plurality of sub-pixels to display an image. The binding portion 113 is provided with a plurality of connection terminals, such as pads, which are electrically connected to the sub-pixels located in the display portion 112, so that the sub-pixels are electrically connected to the electronic devices such as the driving chip 30, and thus the power supply voltage and the electrical signal are transmitted to drive the sub-pixels to display an image on the display portion 112.
In order to reduce the size of the non-display area where the display module 10 cannot display an image, the edge of the flexible display panel 11 is bent from the display surface toward the non-display surface side to define the aforementioned bent portion 111. That is, a part of the flexible display panel 11 is bent toward a side opposite to the display side of the flexible display panel 1, and the binding portion 113 is located at a side of the display portion 112, and the bent portion is the bending portion 111.
In some embodiments, the display module 10 further includes a polarizer and/or touch layer group 13 stacked on the flexible display panel 11. Specifically, the polarizer, touch panel group 13 is laminated on the display side of the flexible display panel 11 through an adhesive layer. It should be noted that the lamination sequence of the polarizer and the relatively flexible display panel 11 of the touch layer set 13 may be determined according to the specific situation, and is not limited herein. For example, in some embodiments, the touch layer group 13 and the polarizer may be sequentially laminated on the flexible display panel 11 through an adhesive layer, but the cover plate 20 should be located at the outermost side of the display module 10.
It is understood that the polarizer and the touch layer 13 are well known to those skilled in the art and are not important to the present application, and thus the specific structure and principle thereof will not be described herein.
For the display module 10 having multi-curved display, particularly for the display module 10 having four curved surfaces, the display portion 112 includes a main display portion 1121 and an edge display portion 1122 located on the main display portion 1121 side and adjacent to the main display portion 1121.
Specifically, the edge display portion 1122 is bent and extended from the main display portion 1121 toward the non-display surface side of the flexible display panel 11, and the binding portion 113 includes a straight extension portion 1131 corresponding to the main display portion 1121 and a bent extension portion 1132 corresponding to the edge display portion 1122. More specifically, the straight extension portions 1131 are disposed corresponding to and parallel to the main display portion 1121, and the curved extension portions 1132 are disposed corresponding to and parallel to the edge display portion 1122. In this way, the edge of the flexible display panel 23 is bent and extended, and the curvature of the edge display portion 1122 coincides with the curvature of the bending region 22 of the cover 20 to be attached to each other.
In order to ensure the bending effect of the flexible display panel 11 after the flexible display panel 11 is bent, the display module 10 further includes a support structure 12, where the support structure 12 is disposed on one side of the non-display surface of the flexible display panel 11 and is supported between the display portion 112 and the binding portion 113. Specifically, the material of the support structure 12 is silica gel or a composite material, such as silicone rubber, and more specifically, when the material of the support structure 12 is silica gel, the hardness ranges from a40 to a70. The support structure may be adhered between the display portion 112 and the binding portion 113, for example, by a double sided adhesive, a pressure sensitive adhesive, an ultraviolet light curable adhesive, or the like, between the display portion 112 and the binding portion 113.
The support structure 12 can ensure that the display part 112 and the binding part 113 extend in parallel, so that the phenomena of movement or dislocation and the like of the edge of the flexible display panel 11 are effectively avoided or reduced, and the smooth transition of the bending radius of the flexible display panel 11 can be ensured, and the flexible display panel has a better bending effect.
Specifically, the support structure 12 includes a first support portion 121, where the first support portion 121 is supported between the edge display portion 1122 and the binding portion 113, and the first support portion 121 is provided with a stress relief unit so that the bendable characteristic parameter of the first support portion 121 meets a preset bendable rule.
It should be noted that the stress relief means may change the original bendable characteristic parameters of the first supporting portion 121, where the bendable characteristic parameters include elastic modulus, radius of curvature, stress limiting capability, area of the stress concentration region, and the like. The preset bending rule refers to an adaptive bending shape of the first supporting portion 121 according to a specific shape of the curved cover plate, for example, for a four-curved display module, if an edge area of the cover plate is bent to form a quarter arc, the first supporting portion satisfies a condition that the first supporting portion can be bent to form a quarter arc.
More specifically, the edge display portion 1122 is bent and extended from the main display portion 1121 toward the non-display surface side of the flexible display panel 11, and the binding portion 113 includes a straight extension portion 1131 corresponding to the main display portion 1121 and a bent extension portion 1132 corresponding to the edge display portion 1122, and the first support portion 121 is supported between the edge display portion 1122 and the bent extension portion 1131.
That is, the first support portion 121 conforms to the curvature of the edge display portion 1122 and the curved extension portion 1131, and in particular, the support structure 12 may follow the curvature of the edge display portion 1122 and the curved extension portion 1131 to form a curved first support portion 121. In other embodiments, the first supporting portion 121 can be obtained by profiling the bending shapes of the edge display portion 1122 and the bending extension portion 1131, so that the first supporting portion 121 after profiling can avoid the first supporting portion 121 from bouncing to a flat state under the action of the restoring force, and the first supporting portion 121 is separated from the flexible display panel 11.
In this way, by providing the stress releasing unit at the first supporting portion 121 between the edge display portion 1122 of the display portion 112 of the flexible display panel 11 and the bending extension portion 1131 of the binding portion 113, the bending characteristic parameter of the first supporting portion 121 can be changed by the stress releasing unit to satisfy the preset bending rule, so that the first supporting portion 121 is not easy to concentrate stress due to bending, the possibility of buckling deformation is reduced, and the restoring force of the first supporting portion 121 in a flat state is reduced, so that separation between the first supporting portion 121 and the flexible display panel 11 is avoided, and the screen body is ensured not to be damaged.
In some embodiments, the flexible display panel 11 includes a support layer 114, and the support structure 12 is adhered to the support layer 114, where the support layer 114 is used to support other film layers of the flexible display panel 11, so as to relieve stress generated when the other film layers of the flexible display panel 11 fall.
In some embodiments, the stress relief unit includes at least one stress relief portion by means of which the first support portion 121 forms at least one stress relief region capable of relieving stress. In this way, according to the stress concentration characteristics of different parts of the first supporting portion 121, the stress releasing portions are correspondingly arranged, and then the stress releasing areas are correspondingly arranged, so that the arrangement of the stress releasing units can accurately realize the bending characteristic parameters of the first supporting portion 121 under the preset bending rule.
Referring to fig. 2 again, in some embodiments, the stress relief portion is a groove 1211 provided on a surface of the first support portion 121, where the first support portion 121 includes a first surface facing the edge display portion 1122 and a second surface facing the binding portion 113, and the groove 1211 is provided on the first surface and/or the second surface. The stress is released through the grooves 1211, the structure is simple, and the bending characteristic parameters of the first supporting part 121 can meet the preset bending rule through the grooves 1211.
It should be noted that one groove 1211 may correspond to a stress relief area.
As shown in fig. 3, in a preferred embodiment, the first surface and the second surface are respectively provided with grooves 1211, and projections of the grooves 1211 provided on the first surface toward the display portion 112 and projections of the grooves 1211 provided on the second surface toward the display portion 112 are staggered in a preset direction. The preset direction may be a direction in which the display surface of the flexible display panel 11 points to the non-display surface. In this way, it is avoided that the first supporting portion 121 cannot provide reliable support between the edge display portion 1122 and the binding portion 113 after the recess 1211 is opened.
Specifically, the cross-sectional shape of the groove 1211 in the direction in which the display surface of the flexible display panel 11 points to the non-display surface is rectangular or arc-shaped, and thus, the stress release can be made gentle, and the breaking of the groove 1211 is avoided.
Further, the grooves 1211 may continuously extend along the lengthwise extending direction of the first support portion 121, and in particular, the grooves 1211 may penetrate the first support portion 121 along the lengthwise extending direction of the first support portion 121. In this way, stress release of the portion of the first supporting portion 121 having the same curvature is made uniform and reliable, and in other embodiments, a plurality of grooves 1211 are provided at intervals along the lengthwise extending direction of the first supporting portion 121. Providing the plurality of grooves 1211 may provide a supporting effect between the edge display portion 1122 and the binding portion 113 by providing the plurality of grooves 1211 with the first supporting portion 121 therebetween while allowing stress of portions of the first supporting portion 121 having the same curvature to be released. Preferably, the plurality of grooves 1211 are equally spaced apart along the lengthwise extending direction of the first supporting portion 121.
In some embodiments, the grooves 1211 have a triangular, inverted trapezoidal, or arc shape in cross-section in a direction in which the display surface of the flexible display panel 11 points to the non-display surface. Preferably, as shown in fig. 4, the groove 1211 of the second surface has a triangular cross-sectional shape in a direction in which the display surface of the flexible display panel 11 is directed to the non-display surface, so that the compressive deformation of the first supporting portion 121 due to bending can be effectively reduced, and the stress concentration of the first supporting portion 121 can be prevented. As shown in fig. 5, in other preferred embodiments, the groove 1211 of the first surface has an inverted trapezoid shape in cross section in the direction in which the display surface of the flexible display panel 11 points to the non-display surface, so that the tensile deformation of the first support portion 121 due to bending can be effectively reduced, the stress concentration of the first support portion 121 can be prevented, and the groove 1211 is provided with an inverted trapezoid shape in cross section, so that the situation that the first support portion 121 breaks due to excessive stress concentration at a certain position of the groove 1211 during the stress release process can be avoided.
In other embodiments, the stress relief portion is configured as a cavity provided within the first support portion 121, in particular, the cavity includes a plurality of cavities spaced apart along the lengthwise extension of the first support portion 121. Preferably, the cavity is spherical. The contact area between the first supporting portion 121 and the edge display portion 1122 and the binding portion 113 can not be reduced by the hollow hole, so that the first supporting portion 121 is ensured to be reliably supported by the edge display portion 1122 and the binding portion 113, and meanwhile, stress release is realized through the cavity, so that the bendable characteristic parameters of the first supporting portion 121 can meet preset bendable rules.
In still other embodiments, the stress releasing unit is configured as a through hole 1212 provided in the first supporting portion 121, the manner of providing the through hole 1212 is simple, and stress release to both sides of the first supporting portion 121 in the extending direction of the through hole 1212 can be uniform.
Specifically, the through hole 1212 penetrates the first support portion 121 in the longitudinal extending direction of the first support portion 121. The through holes 1212 are formed in a simple manner, and the first support portion 121 has high overall strength.
As shown in fig. 6, in other embodiments, the through hole 1212 may also penetrate the first supporting portion 121 along a direction in which the display surface of the flexible display panel 11 points to the non-display surface. Further, the through holes 1212 include a plurality of through holes 1212 spaced apart along the longitudinal extension direction of the first supporting portion 121. In particular, in one embodiment, the spacing between two adjacent through holes 1212 is 0.2 mm to 0.5 mm, the radial maximum dimension of the through holes 1212 is 0.1 mm to 0.2 mm, and similarly, when the grooves 1211 include a plurality of grooves, the spacing between two adjacent grooves 1211 is 0.2 mm to 0.5 mm, and the radial maximum dimension of the grooves 1211 is 0.1 mm to 0.2 mm.
In order to perform stress release on the portions of the first supporting portion 121 corresponding to the bending radians, the stress release effect of the first supporting portion 121 is improved, the first supporting portion 121 has a first region and a second region adjacent to the first region, and the first region is closer to the bending portion 122 of the flexible display panel 11 than the second region, and the elastic modulus of the second region is greater than that of the first region. That is, the second region is closer to the main display portion 1121 of the flexible display panel 11, and the second region has a larger bending curvature than the first region, so that the elastic modulus of the second region is set to be larger than that of the first region, so that the entire first supporting portion 121 is uniformly stressed.
Further, the first region and the second region are both provided with at least one stress relief unit, and the density of the at least one stress relief unit of the first region is greater than that of the at least one stress relief unit of the second region. The elastic modulus difference of the first region and the second region is differentiated by the stress relief unit so that the flexible characteristic parameter of the first support portion 121 satisfies a preset flexible rule.
More specifically, the number of grooves 1211 of the first region is greater than the number of grooves 1211 of the second region, or the number of through holes 1212 of the first region is greater than the number of through holes 1212 of the second region, or the number of cavities of the first region is greater than the number of cavities of the second region, and in other embodiments, a combination of at least two of the above three ways is also possible.
In still other embodiments, the occupied area or volume of the groove 1211 of the first area may be larger than the occupied area or volume of the groove 1211 of the second area, or the occupied area or volume of the through hole 1212 of the first area may be larger than the occupied area or volume of the through hole 1212 of the second area, or the occupied area or volume of the cavity of the first area may be larger than the occupied area or volume of the cavity of the second area, or in other embodiments, a combination of at least two of the above three ways may be used.
In some embodiments, the support structure 12 further includes a second support portion 122, the second support portion 122 being supported between the main display portion 1121 and the binding portion 113. Specifically, the second support portion 122 is supported between the main display portion 1121 and the straight extension portion 1131. The second supporting portion 122 may also have the same structure as the opening unit, and will not be described herein.
The display module 10 and the display device 100 of the application, through setting up stress release unit at the first supporting part 121 between the edge display part 1122 of the display part 112 of the flexible display panel 11 and the bending extension part 1131 of the binding part 113, the bending characteristic parameter of the first supporting part 121 can be changed by the stress release unit to satisfy the preset bending rule, so that the first supporting part 121 is not easy to cause stress concentration due to bending, the possibility of fold deformation is reduced, and the rebound of the first supporting part 121 into a straight state restoring force is reduced, therefore, the separation between the first supporting part 121 and the flexible display panel 11 is avoided, and the screen body is ensured not to be damaged.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. A display module, comprising:
the flexible display panel comprises a bending part, a display part and a binding part, wherein the display part and the binding part are positioned on two sides of the bending part;
the support structure is arranged on one side of the non-display surface of the flexible display panel and is supported between the display part and the binding part;
the display part comprises a main display part and an edge display part which is positioned at one side of the main display part and is adjacent to the main display part, and the binding part comprises a straight extension part corresponding to the main display part and a bending extension part corresponding to the edge display part;
the support structure comprises a first support part, wherein the first support part is supported between the edge display part and the bending extension part, and the first support part is consistent with the bending radians of the edge display part and the bending extension part;
the first support part is provided with a stress release unit so that the bendable characteristic parameter of the first support part meets a preset bendable rule.
2. The display module of claim 1, wherein the stress relief unit comprises at least one stress relief portion;
the first support part forms at least one stress relief area capable of relieving stress by means of the stress relief part.
3. The display module of claim 2, wherein the stress relief portion is a groove provided on a surface of the first support portion;
the first supporting part comprises a first surface facing one side of the edge display part and a second surface facing one side of the binding part, and the groove is formed in the first surface and/or the second surface;
preferably, the first surface and the second surface are provided with the grooves respectively,
the projections of the grooves formed in the first surface and the projections of the grooves formed in the second surface and the projections of the grooves formed in the display portion are staggered in a preset direction.
4. A display module according to claim 3, wherein the first support portions intersect along their longitudinal direction.
5. A display module according to claim 3, wherein the cross-sectional shape of the recess in the direction in which the display surface of the flexible display panel is directed toward the non-display surface is triangular, inverted trapezoidal, rectangular or arc.
6. The display module of claim 2, wherein the stress relief portion is configured as a through hole provided in the first support portion.
7. The display module of claim 6, wherein the through hole penetrates the first support portion along a longitudinal extension direction of the first support portion, and the longitudinal direction of the first support portion intersects with a direction in which the display surface points to the non-display surface; or alternatively
The through hole penetrates through the first supporting part along the direction that the display surface of the flexible display panel points to the non-display surface.
8. The display module of claim 2, wherein the stress relief portion is configured as a cavity disposed within the first support portion;
preferably, the plurality of cavities are arranged at intervals along the longitudinal extension direction of the first supporting part, and the longitudinal direction of the first supporting part intersects with the direction of the display surface pointing to the non-display surface.
9. The display module assembly of claim 2, wherein the first support portion has a first region and a second region adjacent to the first region;
the first region is closer to the curved portion of the flexible display panel than the second region;
the second region has a modulus of elasticity greater than the modulus of elasticity of the first region.
10. A display device comprising a display module according to any one of claims 1 to 9.
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| CN114446182B (en) * | 2022-02-25 | 2023-11-14 | 合肥维信诺科技有限公司 | Flexible cover plate and display module |
| CN115064066A (en) * | 2022-06-08 | 2022-09-16 | 武汉华星光电半导体显示技术有限公司 | Display device and mobile terminal |
| CN115035801A (en) * | 2022-06-24 | 2022-09-09 | 武汉华星光电半导体显示技术有限公司 | Display screen and wearing equipment |
| CN115116335B (en) * | 2022-07-19 | 2024-05-17 | 武汉华星光电半导体显示技术有限公司 | Display module and display device |
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| CN109147564A (en) * | 2018-09-29 | 2019-01-04 | 上海天马微电子有限公司 | Display panel, display device and display panel production method |
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| CN107403590B (en) * | 2017-08-31 | 2021-04-13 | 上海天马微电子有限公司 | Foldable display device |
| US10720589B2 (en) * | 2018-04-03 | 2020-07-21 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Flexible display device and manufacturing method thereof |
| CN208141720U (en) * | 2018-05-28 | 2018-11-23 | 京东方科技集团股份有限公司 | Flexible strutting piece, flexible display substrates and display device |
| KR20200058638A (en) * | 2018-11-19 | 2020-05-28 | 삼성디스플레이 주식회사 | Display device and manufacturing method thereof |
| CN110062077A (en) * | 2019-02-01 | 2019-07-26 | 华为终端有限公司 | Folding terminal device support chip and folding terminal device |
| CN110649058B (en) * | 2019-09-27 | 2022-11-04 | 京东方科技集团股份有限公司 | Flexible display module and flexible display device |
| CN111192525B (en) * | 2020-02-28 | 2022-02-11 | 上海天马微电子有限公司 | Flexible display device and bending control method thereof |
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