CN113744632A - Display module and display device - Google Patents
Display module and display device Download PDFInfo
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- CN113744632A CN113744632A CN202010469034.0A CN202010469034A CN113744632A CN 113744632 A CN113744632 A CN 113744632A CN 202010469034 A CN202010469034 A CN 202010469034A CN 113744632 A CN113744632 A CN 113744632A
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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 module and a binding module, wherein the flexible display panel comprises a bending part, and a display part and a binding part which are positioned on two sides of the bending part; the supporting 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 on one side of the main display part and is adjacent to the main display part; the supporting structure comprises a first supporting part, the first supporting part is supported between the edge display part and the binding part, and a stress release unit is arranged on the first supporting part so that the bendable characteristic parameters of the first supporting part can meet the preset bendable rule. According to the display module and the display device, 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 first supporting part is not easy to cause stress concentration due to bending, and the screen body is not damaged.
Description
Technical Field
The invention relates to the technical field of display, 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 display an image and affects the screen occupation ratio, the binding portion of the flexible display panel is usually bent to the back side of the flexible display panel to improve the screen occupation ratio of the flexible display panel.
Furthermore, when bending the flexible display panel, in order to determine and fix a bending angle of the flexible display panel, an elevating block is generally provided in a bending region to achieve a desired bending effect.
However, as the demand of people for display devices has gradually increased, display panels with multi-curved surface display (for example, four curved surfaces) have been developed, and the visible area of the display devices has further increased. However, at the same time, the partial areas of the block-up blocks are also bent, so that stress concentration is easy to occur, and the screen body is damaged.
Disclosure of Invention
Therefore, the invention provides a display module and a display device for improving the problems, which can effectively solve the problem that the screen body is damaged due to stress concentration easily caused by bending of the heightening block.
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 flexible display panel is provided with a display surface and a non-display surface which are arranged in an opposite way, and the supporting 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 on one side of the main display part and is adjacent to the main display part;
the support structure includes a first support portion supported between the edge display portion and the binding portion;
the first supporting part is provided with a stress release unit so that the bendable characteristic parameters of the first supporting part meet a preset bendable rule.
In one embodiment, the stress relief unit comprises at least one stress relief portion;
the first supporting part forms at least one stress releasing area capable of releasing stress by means of the stress releasing part.
In one embodiment, the stress releasing portion is a groove formed on the surface of the first supporting portion;
wherein 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 arranged on the first surface and/or the second surface;
preferably, the first surface and the second surface are respectively provided with the grooves;
the projection of the groove arranged on the first surface and facing the display part and the projection of the groove arranged on the second surface and facing the display part are arranged in a staggered mode along 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
The groove extends continuously along the lengthwise extension direction of the first support part.
In an embodiment, a cross-sectional shape of the groove in a direction in which the display surface of the flexible display panel points to the non-display surface is a triangle, an inverted trapezoid, a rectangle, or an arc.
In one embodiment, the stress relief portion is configured as a through hole provided in the first support portion.
In one embodiment, the through hole penetrates through the first support part along the longitudinal extension direction of the first support part; or
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 portion is configured as a cavity provided in the first support portion;
preferably, the cavity comprises a plurality of cavities, and the cavities are arranged at intervals along the longitudinal extension direction of the first support part.
In one embodiment, the first supporting 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 elastic modulus of the second zone is greater than the elastic modulus of the first zone.
In another aspect of the present application, a display device is provided, which includes the above display module.
Above-mentioned display module assembly and display device, first supporting part through the crooked extension between the edge display part of the display part at flexible display panel and the portion of binding sets up stress release unit, accessible stress release unit changes the crooked characteristic parameter of first supporting part, in order to satisfy and predetermine the flexible rule, therefore, can make first supporting part difficult because the bending causes stress concentration, the possibility that the fold warp has been reduced and has taken place, and it becomes straight state restoring force to have reduced first supporting part rebound, therefore, separation between first supporting part and the flexible display panel has been avoided, ensure that the screen body is not impaired.
Drawings
FIG. 1 is a schematic structural diagram of a display device according to an embodiment of the present 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 invention;
FIG. 4 is a schematic partial cross-sectional view of a display device according to yet another embodiment of the 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 partial cross-sectional view of a display device according to still another embodiment of the invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying 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 different embodiments, the same or corresponding elements may be denoted by the same reference numerals, and repeated descriptions thereof will be 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 in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" 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 element may be added unless an explicit limitation is used, such as "only," "consisting of … …," etc. Unless mentioned to the contrary, terms in the singular may include the 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. 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 and electrically connecting with other electronic devices to drive the flexible display panel to normally work. Because binding portion can't carry out image display, the setting of binding portion can increase flexible display panel's non-display area, and then very big influence screen accounts for than, is unfavorable for realizing real comprehensive screen. In order to obtain better experience and further increase the display area, a cover plate with multiple curved surfaces at the edge is generally attached 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 the multiple edges of the flexible display panel are displayed, and the visual area is further increased.
However, the flexible display panel often lacks necessary support and fixation between the bending portion and the edge portion near the bending portion, so that the edge of the flexible display panel is easily moved or dislocated by external environment, such as pressing or impact, and the structure and performance of the flexible display panel are adversely affected. In addition, because the support is lacked between the bending part of the flexible display panel after bending and the edge part close to the bending part, 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 block for raising 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 block for raising are covered with an adhesive layer to be bonded to the flexible display panel so as to be fixed to the flexible display panel. The block of stepping up can provide stable support to the part of buckling and marginal portion of flexible display panel, avoid or reduce flexible display panel edge and appear removing or phenomenon such as dislocation, and can guarantee that flexible display panel's the radius of buckling is smooth to be passed through, has the effect of buckling of preferred.
And in the display module assembly that has many curved surfaces to show, especially in the display module assembly that four curved surfaces show, flexible display panel's edge bending extension, bed hedgehopping piece also can carry out certain crooked along with flexible display panel, thereby form the horizontal extension portion that extends along the horizontal direction and the crooked extension portion of the crooked extension of orientation horizontal extension portion one side, and stress concentration phenomenon appears easily because the bending in crooked extension portion, fold deformation takes place to the utmost point probably, or because crooked extension portion rebounds into straight state under the effect of restoring force, thereby lead to bed hedgehopping piece's crooked extension portion and flexible display panel to separate, make the screen body damage.
Therefore, it is desirable to provide a solution that can reduce the stress concentration of the bent extension portion of the block.
Hereinafter, a display module according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a display device in an embodiment of the present application, and fig. 2 is a schematic partial cross-sectional diagram of the display device in the embodiment of the present application. For the purpose of illustration, the drawings show only the structures associated with embodiments of the invention.
Referring to the drawings, a display device 100 according to an embodiment of the present disclosure includes a display module 10 and a cover plate 20. The cover plate 20 may be attached to the display module 10 by an adhesive layer 30.
Specifically, the cover plate 20 is used to protect the display module 10 from external impact and prevent external moisture or oxygen from penetrating into the light emitting elements of the display module 10, which are susceptible to the 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. In one embodiment, the cover plate 20 is a glass cover plate.
Meanwhile, in order to obtain the front and side display of the display device 100 to realize the curved display, the cover plate 20 includes a straight area 21 and a curved area 22, and the curved area 22 is located on at least one side of the straight area 21 and smoothly transits to the straight area 21. It should be understood that the bending region 22 is located at one side of the cover plate 20, meaning that the display device 100 has a front display area and a side display area, and the bending region 22 is located at one side of the cover plate 20, which may form a defined outline of the side display area of the display device 100. That is, the display module 10 is attached to the bending region 22 of the cover plate 20, and the display device 100 can display the side surface through the light-transmitting bending region 22.
Specifically, in one embodiment, the flat region 21 is located in the middle of the cover plate 20 and is a relatively flat region on the cover plate 20, and the curved regions 22 are located on both sides of the cover plate 20 in the transverse direction and/or the longitudinal direction and are regions formed by bending or bending back the two sides of the flat region 21 in the transverse direction and/or the longitudinal direction. Preferably, the bent portions 23 located at both lateral and/or longitudinal sides of the flat region 21 are symmetrically disposed.
It is understood that the cover plate 20 may also be a contoured cover plate, wherein contoured cover plate 20 means that the curved design tends to curve inwardly of the cover plate 20. For example, in some embodiments, the bend region 22 of the cover plate 20 has a bend angle of 180 degrees. Of course, in other embodiments, the bend angle of the bend region 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 opposite to each other. It is understood that the display surface may display images and the non-display surface may not display images.
Specifically, the flexible display panel 11 includes a bending portion 111, and a display portion 112 and a binding portion 113 located at both sides of the bending portion 111. A display layer group having a plurality of sub-pixels for displaying an image is disposed on a side of the display portion 112 facing the display surface. The binding portion 113 is provided with a plurality of connection terminals, such as pads, electrically connected to the sub-pixels located at the display portion 112, thereby electrically connecting the sub-pixels with the electronic devices, such as the driving chip 30, and further transmitting power voltages and electrical signals to drive the sub-pixels to display images on the display portion 112.
In order to reduce the size of the non-display area where the display module 10 cannot display images, the edge of the flexible display panel 11 is bent from the display surface to 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 the opposite side to the display side of the flexible display panel 1, the binding portion 113 is located on the side of the display portion 112, and the bent portion is the bent portion 111.
In some embodiments, the display module 10 further includes a polarizer and/or a touch layer set 13 stacked on the flexible display panel 11. Specifically, the polarizer and the touch layer group 13 are laminated on the display side of the flexible display panel 11 through an adhesive layer. Note that the lamination sequence of the polarizer and the touch layer group 13 with respect to the flexible display panel 11 may be determined according to specific situations, and is not limited herein. For example, in some embodiments, the touch layer group 13 and the polarizer may be stacked on the flexible display panel 11 sequentially 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 in the present application, and therefore detailed structures and principles thereof are not described herein.
For a display module 10 with multi-curved display, particularly a display module 10 with four curved surfaces, the display portion 112 includes a main display portion 1121 and an edge display portion 1122 located at one side of the main display portion 1121 and adjacent to the main display portion 1121.
Specifically, the edge display portion 1122 extends from the main display portion 1121 to be curved 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 curved extension portion 1132 corresponding to the edge display portion 1122. More specifically, the straight extension 1131 is disposed corresponding to the main display portion 1121 and is parallel to each other, and the curved extension 1132 is disposed corresponding to the edge display portion 1122 and is parallel to each other. Thus, the edge of the flexible display panel 23 extends in a curved manner, and the curved arc of the edge display portion 1122 and the curved arc of the curved region 22 of the cover plate 20 are matched 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 supporting structure 12, the supporting 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 silicone rubber or a composite material, such as silicone rubber, and more specifically, when the material of the support structure 12 is silicone rubber, 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 curing adhesive, or the like.
The supporting structure 12 is arranged to ensure that the display part 112 and the binding part 113 extend in parallel, so as to effectively avoid or reduce the phenomena of movement or dislocation and the like at the edge of the flexible display panel 11, and ensure that the bending radius of the flexible display panel 11 is gently transited and has a better bending effect.
Specifically, the supporting structure 12 includes a first supporting portion 121, the first supporting portion 121 is supported between the edge display portion 1122 and the binding portion 113, and the first supporting portion 121 is provided with a stress releasing unit to make the bendable characteristic parameter of the first supporting portion 121 satisfy a preset bendable rule.
It should be noted that the stress releasing unit may change the original bending characteristic parameters of the first supporting portion 121, where the bending characteristic parameters include an elastic modulus, a curvature radius, a stress limit resistance, a stress concentration area size, and the like. The preset bendable rule refers to an adaptive bent 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, an edge area of the cover plate is bent to form a quarter arc, and the first supporting portion satisfies a condition that the first supporting portion can be bent to form the quarter arc.
More specifically, the edge display portion 1122 extends from the main display portion 1121 to be curved toward the non-display surface side of the flexible display panel 11, the binding portion 113 includes a straight extension portion 1131 corresponding to the main display portion 1121 and a curved 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 curved extension portion 1131.
That is, the first support part 121 conforms to the curvature of the edge display part 1122 and the curved extension part 1131, and specifically, the support structure 12 may follow the edge display part 1122 and the curved extension part 1131 to form the curved first support part 121. In other embodiments, the first supporting portion 121 may also be obtained by profiling the bending shapes of the edge display portion 1122 and the bending extending portion 1131, and the profiled first supporting portion 121 prevents the bent first supporting portion 121 from rebounding to a straight state under the action of a restoring force, so that the first supporting portion 121 and the flexible display panel 11 are separated from each other.
Thus, by providing the stress releasing unit on 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 prone to stress concentration caused by bending, the possibility of wrinkle deformation is reduced, and the restoring force of the first supporting portion 121 rebounding to a straight state is reduced, therefore, the separation between the first supporting portion 121 and the flexible display panel 11 is avoided, and the screen body is not damaged.
In some embodiments, the flexible display panel 11 includes a support layer 114, the support structure 12 is adhered to the support layer 114, and 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 are dropped.
In some embodiments, the stress relief unit includes at least one stress relief portion, and the first supporting portion 121 forms at least one stress relief region capable of relieving stress by means of the stress relief portion. Thus, by correspondingly providing the stress relief portion and the stress relief region according to the stress concentration characteristics of different portions of the first support portion 121, the bending characteristic parameters of the first support portion 121 under the preset bending rule can be accurately realized by the stress relief unit.
Referring to fig. 2 again, in some embodiments, the stress relief portion is a groove 1211 disposed on a surface of the first supporting portion 121, wherein the first supporting 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 disposed on the first surface and/or the second surface. The groove 1211 has a simple structure and a simple manner of releasing stress, and the groove 1211 enables the bendable characteristic parameter of the first supporting part 121 to satisfy the predetermined bendable rule.
It is noted that one groove 1211 may correspond to a stress relief region.
As shown in fig. 3, in a preferred embodiment, the first surface and the second surface are respectively provided with a groove 1211, and a projection of the groove 1211 provided on the first surface toward the display part 112 is staggered with a projection of the groove 1211 provided on the second surface toward the display part 112 along 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. Thus, the first supporting portion 121 can be prevented from failing to provide reliable support between the edge display portion 1122 and the binding portion 113 after the groove 1211 is formed.
Specifically, the cross-sectional shape of the groove 1211 in the direction in which the display surface of the flexible display panel 11 is directed to the non-display surface is rectangular or arc-shaped, so that the stress release can be gentle and the groove 1211 can be prevented from being broken.
Further, the groove 1211 may continuously extend along the longitudinal extension direction of the first support part 121, and specifically, the groove 1211 may penetrate through the first support part 121 along the longitudinal extension direction of the first support part 121. In this way, the stress release of the portion of the first support part 121 having the same curvature is uniform and reliable, and in other embodiments, the plurality of grooves 1211 are disposed at intervals along the longitudinal extension direction of the first support part 121. The grooves 1211 are provided to release stress of the first supporting portion 121 having the same curvature, and the portion of the first supporting portion 121 between the grooves 1211 can provide a supporting function between the edge display portion 1122 and the binding portion 113. Preferably, the plurality of grooves 1211 are disposed at equal intervals along the lengthwise extending direction of the first support part 121.
In some embodiments, the cross-sectional shape of the groove 1211 in a direction in which the display surface of the flexible display panel 11 points to the non-display surface is triangular, inverted trapezoidal, or arc-shaped. Preferably, as shown in fig. 4, the cross-sectional shape of the groove 1211 of the second surface in the direction in which the display surface of the flexible display panel 11 points to the non-display surface is triangular, so that the pressing deformation of the first support 121 due to bending can be effectively reduced, and the stress concentration of the first support 121 can be prevented. As shown in fig. 5, in another preferred embodiment, the cross-sectional shape of the groove 1211 of the first surface in the direction from the display surface of the flexible display panel 11 to the non-display surface is an inverted trapezoid, so that the tensile deformation of the first support portion 121 due to bending can be effectively reduced, and the stress concentration of the first support portion 121 can be prevented, and the cross-sectional shape of the groove 1211 is an inverted trapezoid, which can prevent the first support portion 121 from being broken due to excessive stress concentration at a certain position of the groove 1211 during the stress releasing process.
In other embodiments, the stress relief portion is configured as a cavity disposed in the first support portion 121, and specifically, the cavity includes a plurality of cavities spaced apart along the longitudinal extension direction of the first support portion 121. Preferably, the cavity is spherical. The contact area of the first supporting part 121, the edge display part 1122 and the binding part 113 can be prevented from being reduced by the arrangement of the hollow holes, reliable supporting of the first supporting part 121 for the edge display part 1122 and the binding part 113 is guaranteed, and meanwhile, stress release is achieved through the cavity, so that the bendable characteristic parameters of the first supporting part 121 can meet preset bendable rules.
In some embodiments, the stress relief unit is configured as a through hole 1212 provided in the first support portion 121, the through hole 1212 is simply provided, and the stress relief on both sides of the first support portion 121 in the extending direction of the through hole 1212 can be uniform.
Specifically, the through hole 1212 penetrates the first support 121 in a longitudinal extension direction of the first support 121. The through hole 1212 is simply formed, and the first support part 121 has high overall strength.
As shown in fig. 6, in other embodiments, the through hole 1212 may also penetrate through the first supporting portion 121 in 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, and the plurality of through holes 1212 are spaced apart from each other along the longitudinal extension direction of the first support portion 121. In one embodiment, the distance between two adjacent through holes 1212 is 0.2 mm to 0.5 mm, the maximum radial dimension of the through holes 1212 is 0.1 mm to 0.2 mm, and similarly, when the groove 1211 includes a plurality of grooves 1211, the distance between two adjacent grooves 1211 is 0.2 mm to 0.5 mm, and the maximum radial dimension of the groove 1211 is 0.1 mm to 0.2 mm.
In order to release the stress of the portions of the first supporting portion 121 corresponding to the plurality of bending radians and improve the stress releasing effect of the first supporting portion 121, the first supporting portion 121 has a first region and a second region adjacent to the first region, 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 the elastic modulus 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 bending curvature of the second region is larger than that of the first region, so that the elastic modulus of the second region is set larger than that of the first region, so that the whole first support portion 121 can be uniformly stressed.
Furthermore, the first area and the second area are both provided with at least one stress release unit, and the density of the at least one stress release unit of the first area is greater than that of the at least one stress release unit of the second area. The elastic modulus of the first region and the elastic modulus of the second region are differentiated by the stress releasing unit, so that the bendable characteristic parameter of the first supporting part 121 meets the preset bendable rule.
More specifically, the number of the grooves 1211 of the first region is greater than the number of the grooves 1211 of the second region, or the number of the through holes 1212 of the first region is greater than the number of the through holes 1212 of the second region, or the number of the cavities of the first region is greater than the number of the cavities of the second region, and in other embodiments, a combination of at least two of the three manners may be adopted.
In still other embodiments, the occupied area or volume of the groove 1211 of the first region may be larger than the occupied area or volume of the groove 1211 of the second region, or the occupied area or volume of the through hole 1212 of the first region may be larger than the occupied area or volume of the through hole 1212 of the second region, or the occupied area or volume of the cavity of the first region may be larger than the occupied area or volume of the cavity of the second region, or a combination of at least two of the above three ways may be adopted in other embodiments.
In some embodiments, the support structure 12 further includes a second support portion 122, and the second support portion 122 is 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 be formed with a structure similar to that of the opening unit, which is not described herein again.
The application discloses display module assembly 10 and display device 100, first supporting part 121 between the crooked extension 1131 through edge display portion 1122 of the display part 112 at flexible display panel 11 and binding part 113 sets up the stress relief unit, accessible stress relief unit changes the crooked characteristic parameter of first supporting part 121, in order to satisfy and predetermine flexible rule, thus, can make first supporting part 121 be difficult for because the bending causes stress concentration, the possibility that the fold warp has been reduced, and first supporting part 121 has been reduced and has rebounded into straight state restoring force, therefore, separation between first supporting part 121 and flexible display panel 11 has been avoided, ensure that the screen body is not impaired.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to 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 flexible display panel is provided with a display surface and a non-display surface which are arranged in an opposite way, and the supporting 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 on one side of the main display part and is adjacent to the main display part;
the support structure includes a first support portion supported between the edge display portion and the binding portion;
the first supporting part is provided with a stress release unit so that the bendable characteristic parameters of the first supporting part meet a preset bendable rule.
2. The display module assembly of claim 1, wherein the stress relief unit comprises at least one stress relief portion;
the first supporting part forms at least one stress releasing area capable of releasing stress by means of the stress releasing part.
3. The display module assembly of claim 2, wherein the stress relief portion is a groove formed in a surface of the first support portion;
wherein 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 arranged on the first surface and/or the second surface;
preferably, the first surface and the second surface are respectively provided with the grooves,
the projection of the groove arranged on the first surface and facing the display part and the projection of the groove arranged on the second surface and facing the display part are arranged in a staggered mode along a preset direction.
4. The display module according to claim 3, wherein a plurality of grooves are formed at intervals along a lengthwise extending direction of the first support; or
The groove extends continuously along the lengthwise extension direction of the first support part.
5. The display module according to claim 3, wherein the cross-sectional shape of the groove in a direction in which the display surface of the flexible display panel points to the non-display surface is a triangle, an inverted trapezoid, a rectangle, or an arc.
6. The display module of claim 2, wherein the stress relief portion is configured as a through hole disposed in the first support portion.
7. The display module assembly according to claim 6, wherein the through hole penetrates the first support along a longitudinal extension direction of the first support; or
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 cavity comprises a plurality of cavities, and the cavities are arranged at intervals along the longitudinal extension direction of the first support part.
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 elastic modulus of the second zone is greater than the elastic modulus of the first zone.
10. A display device comprising the display module according to any one of claims 1 to 9.
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| CN113744632B (en) | 2023-06-23 |
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