CN113707018A - Display module and display device - Google Patents
Display module and display device Download PDFInfo
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- CN113707018A CN113707018A CN202110990398.8A CN202110990398A CN113707018A CN 113707018 A CN113707018 A CN 113707018A CN 202110990398 A CN202110990398 A CN 202110990398A CN 113707018 A CN113707018 A CN 113707018A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/549—Organic PV cells
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Abstract
The application provides a display module assembly and display device, display module assembly have the bending region and distribute and be in the non-bending region of at least one side of bending region, it includes display substrates, sets up the apron in display substrates one side and sets up the supporting layer at the display substrates opposite side. One or more of the surfaces of the cover plate, the display substrate and the supporting layer are provided with grooves, and the grooves are positioned in the bending area. The grooves are formed in the surface of the film layer in the display module, the thickness of the part, located in the bending area, of the film layer is reduced, and the bending performance of the film layer is improved. After buckling the display module assembly, the radius of buckling grow of display module assembly can make the display module assembly profile of buckling's shape more level and smooth, avoids buckling the profile and produces most advanced, has reduced each rete among the display module assembly because stress concentration takes place cracked risk.
Description
Technical Field
The application relates to the technical field of display, in particular to a display module and a display device.
Background
The folding display panel has the characteristics of lightness, thinness, flexibility, folding, wearing and the like, and can be suitable for various different application scenes. With the development of display technology, foldable display panels are increasingly widely used.
An existing foldable display panel generally includes a flexible display substrate and a supporting structure, where the supporting structure supports the flexible display substrate, and a hinge structure is disposed in the supporting structure to achieve bending and folding of the display panel. However, after bending and folding for many times, each film layer in the display panel is easily damaged.
Disclosure of Invention
This application provides a display module assembly and display device to the shortcoming of current mode for the folding display panel who solves among the prior art takes place the problem of damaging easily at the rete of many times bending and folding back display panel.
In a first aspect, an embodiment of the present application provides a display module, including bending zone and distribution in the non-bending zone of at least one side of bending zone, the display module includes:
a display substrate;
the cover plate is arranged on one side of the display substrate and is connected with the display substrate;
the supporting layer is arranged on one side, far away from the cover plate, of the display substrate and connected with the display substrate, and a groove is formed in the surface of the supporting layer;
the surface of the cover plate and/or the display substrate is provided with a groove, and the groove is positioned in the bending area.
Optionally, the surface of the cover plate facing the display substrate is provided with at least two grooves, the grooves on the surface of the cover plate are arranged at intervals along a first direction, and the first direction is perpendicular to the bending axis of the display module; and/or the presence of a gas in the gas,
the supporting layer comprises a first surface and a second surface which are distributed oppositely, the first surface faces the display substrate, the second surface faces away from the display substrate, at least two grooves are formed in any one of the first surface and the second surface, and the grooves are arranged at intervals along the first direction; and/or the presence of a gas in the gas,
the first surface with the second surface all is equipped with two at least the recess, the recess is followed first direction interval sets up.
Optionally, the surface of the cover plate facing the display substrate is provided with two grooves; and/or the presence of a gas in the gas,
the supporting layer comprises a first surface and a second surface which are distributed oppositely, the first surface faces the display substrate, the second surface faces away from the display substrate, two grooves are formed in any one of the first surface and the second surface, and the grooves are arranged at intervals along the first direction; and/or the presence of a gas in the gas,
the first surface with the second surface all is equipped with two the recess, the recess is followed first direction interval sets up.
Optionally, the display substrate includes a display functional layer and a back film layer sequentially distributed along a direction from the cover plate to the support layer, the back film layer includes a first surface and a second surface which are distributed oppositely, the first surface faces the display substrate, the second surface faces away from the display substrate, at least two grooves are formed in any one of the first surface and the second surface, and the grooves are arranged at intervals along the first direction; and/or the presence of a gas in the gas,
the display module further comprises a heat dissipation layer, the heat dissipation layer is located on one side, far away from the display substrate, of the supporting layer, at least two grooves are formed in the surface, facing the supporting layer, of the heat dissipation layer, and the grooves in the surface of the heat dissipation layer are arranged at intervals in the first direction.
Optionally, the grooves are distributed in an axisymmetric manner with the bending axis of the display module.
Optionally, the depth of the groove in the cover plate is greater than or equal to one fifth of the thickness of the cover plate and less than or equal to nine tenths of the thickness of the cover plate; and/or the presence of a gas in the gas,
the depth of the groove in the supporting layer is larger than or equal to one fifth of the thickness of the supporting layer and smaller than or equal to nine tenth of the thickness of the supporting layer.
Optionally, in the first direction, the width of the groove is greater than or equal to one eighth of the width of the bending region and less than or equal to one half of the width of the bending region.
Optionally, a filling layer is filled in the groove, and an elastic modulus of the filling layer is smaller than an elastic modulus of the film layer provided with the groove.
Optionally, the display device further comprises a cover layer, the cover layer is located on a side of the cover plate facing the display substrate, the cover layer is filled in the groove on the surface of the cover plate and covers the surface of the cover plate, and the refractive index of the cover layer is equal to the refractive index of the cover plate.
In a second aspect, an embodiment of the present application provides a display device, including the display module provided in the first aspect.
The beneficial technical effects brought by the technical scheme provided by the embodiment of the application comprise:
in the display module assembly that this application embodiment provided, because in the bending zone of display module assembly, recess has been seted up on one or many surfaces in apron, display substrate and the supporting layer, improved display module assembly's the performance of buckling from this, make display module assembly buckle the back radius grow, avoided buckling the radius stress concentration when too little and cause the rete in the display module assembly to take place to damage.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a display module according to a first embodiment of the present application;
FIG. 2 is a diagram showing a comparison between an actual bending shape and a theoretical bending shape of a module;
FIG. 3 is a front view of a cover plate in an embodiment of the present application;
FIG. 4 is a bottom view of a cover plate in an embodiment of the present application;
fig. 5 is a schematic structural diagram of a display module according to a second embodiment of the present application;
fig. 6 is a schematic structural diagram of a display module according to a third embodiment of the present application;
fig. 7 is a schematic structural diagram of a display module according to a fourth embodiment of the present application;
fig. 8 is a schematic structural diagram of a display module according to a fifth embodiment of the present application.
In the figure:
10-a display module; 100-grooves;
101-a bending zone; 102-a non-inflection region; 103-bending shaft;
11-a display substrate; 12-a cover plate; 13-a support layer; 14-an adhesive layer; 15-heat dissipation layer;
111-display functional layer; 1111-an optically functional layer; 1112-a light emitting functional layer; 112-a backing film layer;
131-a first surface; 132-a second surface; 1121-first side; 1122-second side
21-a filler layer; 22-cover layer.
Detailed Description
Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
The inventor of the present application considers that, in the existing foldable display module, the bending radius of each film layer is small when the film layer is bent and curled, and a tip appears in the bending area. Therefore, stress and strain of each film layer in the bending area are distributed unevenly, stress is concentrated at the tip, and each film layer is easy to break due to local stress concentration.
The application provides a display module assembly and display device aims at solving prior art technical problem as above.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.
The embodiment of the application provides a display module 10, which includes a bending region 101 and non-bending regions 102 distributed on two opposite sides of the bending region 101, and a schematic structural diagram of the display module 10 is shown in fig. 1, and includes:
a display substrate 11;
a cover plate 12 disposed at one side of the display substrate 11, the cover plate 12 being connected to the display substrate 11;
the supporting layer 13 is arranged on one side of the display substrate 11 far away from the cover plate 12, the supporting layer 13 is connected with the display substrate 11, and a groove 100 is formed in the surface of the supporting layer 13;
the cover plate 12 and/or the display substrate 11 have a groove 100 formed on the surface thereof, and the groove 100 is located in the bending region 101.
In the embodiment provided in the present application, the display substrate 11 is a flexible substrate, the display substrate 11 includes a display functional layer 111, and the display functional layer 111 includes an optical functional layer 1111 and a light emitting functional layer 1112. The optical function layer 1111 includes a polarizer, and the light emitting function layer 1112 includes a flexible substrate and a thin film transistor device (not shown in the figure) provided on the flexible substrate. The back film layer 112 supports the display function layer 111, and has a large thickness. The cover plate 12 is disposed on one side of the display substrate 11, and is used to cover the display substrate 11 to protect it from being damaged by external impact. The material of the cover plate 12 includes Ultra Thin Glass (UTG), which has advantages of Thin thickness, good flexibility, impact resistance, etc. It is understood that the cover plate 12 may be made of other materials, such as Colorless Polyimide (CPI), which may be determined according to the actual situation.
In the embodiment provided by the present application, the supporting layer 13 is disposed on a side of the display substrate 11 away from the cover 12, the supporting layer 13 supports the display substrate 11, and the material of the supporting layer 13 includes an elastic material such as SUS stainless steel or a polymer material. When the display module 10 is bent, the supporting layer 13 is bent at the portion of the non-bending region 102 by applying a force, the portion of the supporting layer 13 in the bending region 101 is deformed and bent, and the portion of the supporting layer 13 in the non-bending region 102 supports the display substrate 11, so as to prevent the film layer in the display substrate 11 from being deformed in the non-bending region 102.
Referring to fig. 2, the bending radius of the display module 10 is R1 in an ideal state, but the measurement result shows that the actual bending radius is R2, and R2 is smaller than R1, i.e. the bending profile of the display module 10 during actual bending generates a sharp point, and stress is easily concentrated at one point, which causes the problem that the film in the display module 10 is easily broken.
Referring to fig. 2, 3 and 4, the cover plate 12 is provided with a groove 100 at a portion thereof located in the bending region 101. After the grooves 100 are formed, the thickness of the cover plate 12 at the corresponding position of the grooves 100 in the bending region 101 is reduced, and the thickness design mode of the cover plate 12 can convert the concentrated distribution of strain during bending into the average distribution of two or more regions, so that the maximum bending strain is reduced, and the bending performance is improved. Compared with the prior art, buckling the display module assembly 10, the radius of buckling of display module assembly 10 grow, can make the display module assembly 10 buckle the shape of profile more level and smooth, avoids buckling the profile and produces most advanced, has reduced each rete because stress concentration takes place cracked risk among the display module assembly 10.
Referring to fig. 1 and 4, the display module 10 is bent around the bending axis 103, and the bending axis 103 is a central line of the bending contour in the bent state.
In the embodiments provided herein, the opening of the groove 100 on the cover plate 12 can be realized by a photolithography process. The shape of the cover plate 12 includes a rectangle, a circular arc, etc., which can be determined according to practical situations, and is not limited herein.
With continued reference to fig. 1, the cover plate 12 and the display substrate 11, and the display substrate 11 and the supporting layer 13 are connected by an adhesive layer 14. The material of the Adhesive layer 14 includes an optical Adhesive (optical Clear Adhesive), which has the advantages of high light transmittance and high Adhesive strength, and can fix and connect different portions of the display module 10 well without affecting the normal display of the display substrate 11. After the display module 10 has the groove 100, the contact area between the film and the adhesive layer 14 is increased. The adhesion between the film and the adhesive layer 14 is thus improved, reducing the risk of the film detaching from the adhesive layer 14 when bent.
It should be noted that the portion of the display module 10 that can be provided with the groove 100 is not limited to the cover 12, and may be other film layers, such as a film layer made of CPI, PET (Polyethylene terephthalate, PET, thermoplastic polyester), SUS, copper sheet, foam, and the like. The film layer provided with the groove 100 can be determined according to actual conditions.
In some embodiments of the present application, as shown in fig. 5, at least two grooves 100 are disposed on a surface of the cover plate 12 facing the display substrate 11, the grooves 100 on the surface of the cover plate 12 are disposed at intervals along a first direction, and the first direction is a direction perpendicular to the bending axis when the display module 10 is in the flat state (see fig. 1 and fig. 4, the first direction is perpendicular to the bending axis 103); and/or the support layer 13 includes a first surface 131 and a second surface 132 that are distributed oppositely, the first surface 131 faces the display substrate 11, the second surface 132 faces away from the display substrate 11, at least two grooves 100 are formed in any one of the first surface 131 and the second surface 132, and the grooves 100 are arranged at intervals along the first direction; and/or, the first surface 131 and the second surface 132 are provided with at least two grooves 100, and the grooves 100 are arranged at intervals along the first direction.
Because the cover plate 12 and the supporting layer 13 are respectively located at two sides of the display substrate 11, the grooves 100 are formed in the cover plate 12 and the supporting layer 13, and the influence on the display effect when the grooves 100 are formed in the film layer of the display substrate 11 can be avoided. In addition, the material of the cover plate 12 includes UTG, the material of the support layer 13 includes SUS stainless steel, and both the cover plate 12 and the support layer 13 are made of materials with certain rigidity to protect and support the display substrate 11. The support layer 13 of the cover plate 12 has a poor bending property compared to other film layers. Therefore, the grooves 100 are formed in the cover plate 12 and the support layer 13, so that the thicknesses of the cover plate 12 and the support layer 13 in the bending area 101 are reduced, and the bending performance of the display module 10 can be remarkably improved.
In the embodiment provided by the present application, the groove 100 on the supporting layer 13 may be formed on any surface, that is, the groove may be formed on a first surface 131 of the supporting layer 13 on a side close to the display substrate 11, or may be formed on a second surface 132 of the supporting layer 13 on a side away from the display substrate 11, which may be determined according to actual situations.
It should be noted that the number of the grooves 100 on the same film includes, but is not limited to, two, and may be any even number greater than two. The grooves 100 are arranged on the same film layer at intervals, so that the stress strain distribution of the film layer in the display module 10 is more uniform when the film layer is bent, and the risk of breakage of the film layer due to stress concentration is further reduced. The groove 100 may be symmetrical or asymmetrical about the centerline of the inflection zone 101. Preferably, the grooves 100 are distributed with the bending axis 103 of the display module 10 as an axis symmetry, so as to improve the uniformity of the stress-strain distribution when the film is bent. On different film layers, the positions of the grooves 100 may be corresponding or non-corresponding, that is, orthographic projections of the grooves 100 on different film layers may be overlapped or staggered, and may be determined according to actual conditions.
It can be understood that the greater the number of the grooves 100, the better the bending performance of the display module 10. However, an excessive number of grooves 100 may increase process difficulty and manufacturing cost. Preferably, two grooves 100 are opened on the surface of the cover plate 12 facing the display substrate 11; and/or the support layer 13 includes a first surface 131 and a second surface 132 that are distributed oppositely, the first surface 131 faces the display substrate 11, the second surface 132 faces away from the display substrate 11, two grooves 100 are formed in any one of the first surface 131 and the second surface 132, and the grooves 100 are arranged at intervals along the first direction; and/or, the first surface 131 and the second surface 132 are both provided with two grooves 100, and the grooves 100 are arranged at intervals along the first direction.
As shown in fig. 5, two grooves 100 are opened on a surface of the cover plate 12 facing the display substrate 11, and two grooves 100 are opened on both a first surface 131 of the support layer 13 close to the display substrate 11 and a second surface 132 of the support layer 13 far from the display substrate 11. Therefore, the number of the grooves 100 is not too large, and the bending performance of the display module 10 is ensured while the processing technology is simplified.
It should be noted that, in the display module 10, the number of the grooves 100 formed in different film layers may be the same or different, and may be determined according to actual situations.
Optionally, the display module 10 further includes a heat dissipation layer 15, as shown in fig. 5, the heat dissipation layer 15 is disposed on a side of the support layer 13 away from the display substrate 11 to dissipate heat of the display substrate 11. The material of the heat dissipation layer 15 includes metal materials with good heat dissipation performance and certain elasticity, such as copper, aluminum, or stainless steel, and may be determined according to actual conditions.
In order to avoid the influence on the bending performance of the display module 10 after the heat dissipation layer 15 is added, in some embodiments of the present application, at least two grooves 100 are formed on the surface of the heat dissipation layer 15 facing the support layer 13, as shown in fig. 6, the grooves 100 on the surface of the heat dissipation layer 15 are spaced apart along the first direction. In specific implementation, two grooves 100 are formed on the surface of the heat dissipation layer 15 facing the support layer 13.
In the embodiment provided in the present application, the display substrate 11 includes a display functional layer 111 and a back film layer 112 sequentially distributed along a direction from the cover plate 12 to the support layer 13, as shown in fig. 6, the back film layer 112 includes a first surface 1121 and a second surface 1122 distributed oppositely, the first surface 1121 faces the display substrate 11, and the second surface 1122 faces away from the display substrate 11. In order to further improve the bending performance of the display module, at least two grooves 100 may be formed on any one of the first surface 1121 and the second surface 1122. As shown in fig. 6, two grooves 100 are formed on the second surface 1122, and the grooves 100 are spaced along the first direction (horizontal direction in the figure). It should be noted that the third surface 1121 may also be provided with grooves 100, and the number of the grooves 100 on the first surface 1121 or the second surface 1122 may also be an even number greater than 2.
Specifically, as shown in fig. 6, the display functional layer 111 includes an optical functional layer 1111 and a light-emitting functional layer 1112. The optically functional layer 1111 includes a polarizer to reduce reflection of ambient light. The light-emitting functional layer 1112 includes a light-emitting material and emits light when energized, so that the display function of the display substrate 11 is realized. The surface of the heat dissipation layer 15 facing the display substrate 11 is formed with two grooves 100, and the surface of the back film layer 112 facing away from the display substrate 11 is also formed with two grooves 100. The grooves 100 are formed in the heat dissipation layer 15 and the back film layer 112, so that the overall bending performance of the display module 10 is improved. On the other hand, the grooves 100 formed in the heat dissipation layer 15 and the back film layer 112 do not affect the display performance of the display substrate 11.
The inventor of the present application considers that when the depth of the groove 100 is too large, the thickness of the film layer provided with the groove 100 at the groove 100 is too thin, and the film layer is easy to penetrate through when the groove 100 is provided, so that the processing is difficult. When the depth of the groove 100 is too small, the bending performance of the film layer is low. Therefore, the depth of the groove 100 needs to be within a reasonable range. Preferably, in some embodiments of the present application, the depth (dimension perpendicular to the cover plate 12) of the groove 100 in the cover plate 12 is greater than or equal to one fifth of the thickness of the cover plate 12 and less than or equal to nine tenths of the thickness of the cover plate 12; and/or the depth (dimension perpendicular to the support layer 13) of the groove 100 on the support layer 13 is greater than or equal to one fifth of the thickness of the support layer 13 and less than or equal to nine tenth of the thickness of the support layer 13. Therefore, the display module 10 has good bending performance, and the groove 100 is easy to open.
Since grooves 100 are located within inflection region 101, the widths of inflection region 101 and grooves 100 have an effect on the number of grooves 100. It is understood that when the width of the bending region 101 is constant, the larger the width of the groove 100, the smaller the number thereof, and vice versa. Optionally, in some embodiments of the present application, a width of the groove 100 in the first direction is greater than or equal to one-eighth of a width of the bending region 101 in the first direction, and less than or equal to one-half of the width of the bending region 101 in the first direction. Therefore, the number of the grooves 100 can be kept within a reasonable range, the bending performance of the display module 10 is guaranteed, and the processing difficulty caused by excessive grooves 100 is avoided.
It should be noted that the sizes of the grooves 100 formed on different film layers in the display module 10 may be the same or different. Preferably, the depth of the groove 100 is in the range of one fifth to nine tenth of the thickness of the film layer where the groove 100 is located, and the width of the groove 100 satisfies the above requirements. The size of the grooves 100 on different film layers can be determined according to actual conditions.
The inventor of the present application considers that after the grooves 100 are formed in the film layer of the display module 10, the surface of the film layer is not flat, which is not favorable for assembling and bonding the film layers. For this reason, in some embodiments of the present application, the groove 100 is filled with the filling layer 21, and the elastic modulus of the filling layer 21 is smaller than the elastic modulus of the film layer forming the groove 100, that is, if the filling layer 21 is filled in the groove 100 formed in the cover 21, the elastic modulus of the filling layer 21 is smaller than the elastic modulus of the cover 21, and if the filling layer 21 is filled in the groove 100 formed in the supporting layer 13, the elastic modulus of the filling layer 21 is smaller than the elastic modulus of the supporting layer 13. As shown in fig. 7, the filling layer 21 is filled in the groove 100 on the surface of the cover plate 12, and after the filling layer 21 is provided, the surface of the cover plate 12 where the groove 100 is opened can be flattened, and it is easier to bond the cover plate 12 to the display substrate 11.
The film layer provided with the filling layer 21 includes, but is not limited to, the cover plate 12, and the filling layer 21 may be provided on another film layer provided with the groove 100, for example, the filling layer 21 may be provided in the groove of the support layer 13 provided with the groove 100. The material of the filling layer 21 includes elastic materials such as polyimide, poly (terephthalic acid), polyethylene naphthalate, polymethyl methacrylate, polyurethane, aramid, and acrylic, and can be determined according to actual conditions. Preferably, the elastic modulus of the filling layer 21 in the groove 100 is smaller than the elastic modulus of the film layer provided with the groove 100, so as to avoid the influence on the bending performance of the film layer after the filling layer 21 is provided.
The inventor of the present application considers that, because the cover plate 12 is disposed on one side of the light emitting surface of the display substrate 11, the light emitted by the display substrate 11 reaches the human eyes through the cover plate 12 to achieve the display effect, and the groove 100 formed in the cover plate 12 affects the optical refraction performance of the cover plate 12, thereby affecting the display effect. For this reason, in some embodiments of the present application, as shown in fig. 8, the display module 10 further includes a cover layer 22, the cover layer 22 is located on a side of the cover plate 12 facing the display substrate 11, the cover layer 22 is filled in the groove 100 on the surface of the cover plate 12 and covers the surface of the cover plate 12, and a refractive index of the cover layer 22 is equal to a refractive index of the cover plate 12.
In the embodiment of the present application, the material of the cover layer 22 includes a material having the same or similar refractive index as the cover plate 12. After the cover layer 22 covers the surface of the cover plate 12, the surface of the cover plate 12 with the groove 100 is flatter, so that the groove 100 is prevented from affecting the optical performance of the cover plate, and the display performance of the display module 10 is ensured.
In other film layers with the groove 100, the cover layer 22 may cover the surface of the film layer with the groove 100, but the cover layer 22 may increase the thickness of the display module 10. The arrangement of the cover layer 22 can be determined according to the actual situation.
Based on the same inventive concept, the embodiment of the present application provides a display device, which includes the display module 10 provided in the embodiment of the present application. Because the display device includes the above-mentioned display module that this application embodiment provided, therefore this display device has the same beneficial effect with above-mentioned display module, and it is no longer repeated here.
In the embodiment of the present application, the display device includes, but is not limited to, an electronic book, a mobile phone, a tablet computer, a television, and the like, and may be determined according to actual situations.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
1. grooves 100 are formed in the surface of one or more of the cover plate 12, the display substrate 11 and the support layer 13 in the display module 10, and the grooves 100 are located in the bending region 101. The thickness of the film layer provided with the groove 100 and positioned in the bending area 101 is reduced, and the bending performance is improved. After buckling display module assembly 10, display module assembly 10's radius of buckling grow, can make display module assembly 10 buckle the shape of profile more level and smooth, avoid buckling the profile and produce most advanced, reduced each rete among display module assembly 10 because stress concentration and the risk of breaking occur.
2. The grooves 100 on the same film layer are arranged at intervals, so that the stress strain distribution of the film layer in the bending area 101 after bending is more uniform, and the risk of breakage of the film layer due to stress concentration is further reduced.
3. When the cover plate 12 and the supporting layer 13 are provided with the grooves 100, the bending performance of the display module 10 can be remarkably improved, and meanwhile, the influence of the grooves 100 on the film layer in the display substrate 11 on the display effect can be avoided.
4. The depth and width of the groove 100 are within a reasonable range, so that the display module 10 has good bending performance, and the groove is easy to be formed in the process.
5. The filling material is filled in the groove 100 to form the filling layer 21, so that the surface of the film layer provided with the groove is flattened, and the assembly and the attachment of each film layer are facilitated. The elastic modulus of the filling layer 21 is smaller than that of the film layer provided with the groove 100, so that the influence of the filling layer 21 on the bending performance of the film layer is avoided.
6. The covering layer 22 is arranged on the surface of the cover plate 12 provided with the groove 100, and the covering layer 22 is made of a material with a refractive index close to that of the cover plate 12, so that the influence on the optical performance of the cover plate 12 after the groove 100 is formed can be avoided, and the display performance of the display module 10 is ensured.
7. After the display module 10 has the groove 100, the contact area between the film and the adhesive layer 14 is increased. The adhesion between the film and the adhesive layer 14 is thus improved, reducing the risk of the film detaching from the adhesive layer 14 when bent.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
Claims (10)
1. The utility model provides a display module assembly, includes bending zone and distribution and is in the non-bending zone of at least one side of bending zone, its characterized in that includes:
a display substrate;
the cover plate is arranged on one side of the display substrate and is connected with the display substrate;
the supporting layer is arranged on one side, far away from the cover plate, of the display substrate and connected with the display substrate, and a groove is formed in the surface of the supporting layer;
the surface of the cover plate and/or the display substrate is provided with a groove, and the groove is positioned in the bending area.
2. The display module according to claim 1, wherein the cover plate has at least two grooves formed on a surface thereof facing the display substrate, the grooves on the surface of the cover plate are spaced apart from each other along a first direction, and the first direction is perpendicular to a bending axis of the display module; and/or the presence of a gas in the gas,
the supporting layer comprises a first surface and a second surface which are distributed oppositely, the first surface faces the display substrate, the second surface faces away from the display substrate, at least two grooves are formed in any one of the first surface and the second surface, and the grooves are arranged at intervals along the first direction; and/or the presence of a gas in the gas,
the first surface with the second surface all is equipped with two at least the recess, the recess is followed first direction interval sets up.
3. The display module assembly according to claim 2, wherein the cover plate has two grooves formed on a surface thereof facing the display substrate; and/or the presence of a gas in the gas,
the supporting layer comprises a first surface and a second surface which are distributed oppositely, the first surface faces the display substrate, the second surface faces away from the display substrate, two grooves are formed in any one of the first surface and the second surface, and the grooves are arranged at intervals along the first direction; and/or the presence of a gas in the gas,
the first surface with the second surface all is equipped with two the recess, the recess is followed first direction interval sets up.
4. The display module assembly according to claim 2, wherein the display substrate includes a display functional layer and a back film layer sequentially distributed along a direction from the cover plate to the supporting layer, the back film layer includes a first surface and a second surface distributed oppositely, the first surface faces the display substrate, the second surface faces away from the display substrate, at least two grooves are formed in any one of the first surface and the second surface, and the grooves are spaced along the first direction; and/or the presence of a gas in the gas,
the display module further comprises a heat dissipation layer, the heat dissipation layer is located on one side, far away from the display substrate, of the supporting layer, at least two grooves are formed in the surface, facing the supporting layer, of the heat dissipation layer, and the grooves in the surface of the heat dissipation layer are arranged at intervals in the first direction.
5. The display module according to any one of claims 1 to 4, wherein the grooves are distributed in an axisymmetric manner around a bending axis of the display module.
6. The display module according to any one of claims 1 to 4, wherein the depth of the groove on the cover plate is greater than or equal to one fifth of the thickness of the cover plate and less than or equal to nine tenths of the thickness of the cover plate; and/or the presence of a gas in the gas,
the depth of the groove in the supporting layer is larger than or equal to one fifth of the thickness of the supporting layer and smaller than or equal to nine tenth of the thickness of the supporting layer.
7. The display module according to any one of claims 2 to 4, wherein the width of the groove in the first direction is greater than or equal to one eighth of the width of the bending region and less than or equal to one half of the width of the bending region.
8. The display module according to any one of claims 1 to 4, wherein the groove is filled with a filling layer, and the elastic modulus of the filling layer is smaller than that of the film layer provided with the groove.
9. The display module of claim 1, further comprising a cover layer on a side of the cover plate facing the display substrate, wherein the cover layer fills the grooves on the surface of the cover plate and covers the surface of the cover plate, and a refractive index of the cover layer is equal to a refractive index of the cover plate.
10. A display device, comprising the display module according to any one of claims 1 to 9.
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| CN202110990398.8A CN113707018B (en) | 2021-08-26 | 2021-08-26 | Display module and display device |
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| CN202110990398.8A CN113707018B (en) | 2021-08-26 | 2021-08-26 | Display module and display device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114120842A (en) * | 2021-12-13 | 2022-03-01 | 武汉华星光电半导体显示技术有限公司 | Display panel and display terminal |
| CN114373391A (en) * | 2022-01-11 | 2022-04-19 | 武汉华星光电半导体显示技术有限公司 | Foldable display module |
| CN114842747A (en) * | 2022-04-11 | 2022-08-02 | 昆山国显光电有限公司 | Flexible cover plate, flexible display screen and electronic equipment |
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| CN115171533A (en) * | 2022-06-29 | 2022-10-11 | 昆山国显光电有限公司 | Cover plate, foldable display module and display device |
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| WO2024026962A1 (en) * | 2022-08-05 | 2024-02-08 | 武汉华星光电半导体显示技术有限公司 | Flexible display device |
| WO2024045334A1 (en) * | 2022-08-31 | 2024-03-07 | 合肥维信诺科技有限公司 | Display module and display device |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140293208A1 (en) * | 2011-10-14 | 2014-10-02 | Sharp Kabushiki Kaisha | Optical deflector |
| US20170042047A1 (en) * | 2015-08-06 | 2017-02-09 | Samsung Display Co., Ltd. | Display device and method of manufacturing the same |
| US20170317148A1 (en) * | 2014-11-28 | 2017-11-02 | Sharp Kabushiki Kaisha | Organic electroluminescence device, illumination device, and display device |
| CN207883219U (en) * | 2018-03-09 | 2018-09-18 | 信利光电股份有限公司 | A kind of display device |
| US20190033509A1 (en) * | 2017-01-09 | 2019-01-31 | Beijing Boe Optoelectronics Technology Co., Ltd. | Light guide plate, manufacturing method thereof, backlight module and display device |
| US20190213924A1 (en) * | 2018-01-09 | 2019-07-11 | Samsung Display Co., Ltd. | Film for display device, display device including the same, and manufacturing method thereof |
| US20190363266A1 (en) * | 2017-01-24 | 2019-11-28 | Sharp Kabushiki Kaisha | Flexible display |
| CN110570764A (en) * | 2019-08-23 | 2019-12-13 | 武汉华星光电半导体显示技术有限公司 | display panel and manufacturing method thereof |
| CN111146358A (en) * | 2019-12-26 | 2020-05-12 | 武汉华星光电半导体显示技术有限公司 | Flexible cover plate and flexible display device |
| CN111446278A (en) * | 2020-04-13 | 2020-07-24 | 京东方科技集团股份有限公司 | Back film layer of flexible display device and flexible display device with same |
| WO2020172929A1 (en) * | 2019-02-25 | 2020-09-03 | 武汉华星光电半导体显示技术有限公司 | Flexible oled device and manufacturing method therefor |
| CN111627337A (en) * | 2020-06-28 | 2020-09-04 | 武汉华星光电半导体显示技术有限公司 | Folding display panel |
| CN111863891A (en) * | 2020-07-07 | 2020-10-30 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and preparation method thereof |
| US20210028393A1 (en) * | 2017-06-06 | 2021-01-28 | Boe Technology Group Co., Ltd. | Flexible display substrate and method of manufacturing the same, display panel and display apparatus |
-
2021
- 2021-08-26 CN CN202110990398.8A patent/CN113707018B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140293208A1 (en) * | 2011-10-14 | 2014-10-02 | Sharp Kabushiki Kaisha | Optical deflector |
| US20170317148A1 (en) * | 2014-11-28 | 2017-11-02 | Sharp Kabushiki Kaisha | Organic electroluminescence device, illumination device, and display device |
| US20170042047A1 (en) * | 2015-08-06 | 2017-02-09 | Samsung Display Co., Ltd. | Display device and method of manufacturing the same |
| US20190033509A1 (en) * | 2017-01-09 | 2019-01-31 | Beijing Boe Optoelectronics Technology Co., Ltd. | Light guide plate, manufacturing method thereof, backlight module and display device |
| US20190363266A1 (en) * | 2017-01-24 | 2019-11-28 | Sharp Kabushiki Kaisha | Flexible display |
| US20210028393A1 (en) * | 2017-06-06 | 2021-01-28 | Boe Technology Group Co., Ltd. | Flexible display substrate and method of manufacturing the same, display panel and display apparatus |
| US20190213924A1 (en) * | 2018-01-09 | 2019-07-11 | Samsung Display Co., Ltd. | Film for display device, display device including the same, and manufacturing method thereof |
| CN207883219U (en) * | 2018-03-09 | 2018-09-18 | 信利光电股份有限公司 | A kind of display device |
| WO2020172929A1 (en) * | 2019-02-25 | 2020-09-03 | 武汉华星光电半导体显示技术有限公司 | Flexible oled device and manufacturing method therefor |
| CN110570764A (en) * | 2019-08-23 | 2019-12-13 | 武汉华星光电半导体显示技术有限公司 | display panel and manufacturing method thereof |
| CN111146358A (en) * | 2019-12-26 | 2020-05-12 | 武汉华星光电半导体显示技术有限公司 | Flexible cover plate and flexible display device |
| CN111446278A (en) * | 2020-04-13 | 2020-07-24 | 京东方科技集团股份有限公司 | Back film layer of flexible display device and flexible display device with same |
| CN111627337A (en) * | 2020-06-28 | 2020-09-04 | 武汉华星光电半导体显示技术有限公司 | Folding display panel |
| CN111863891A (en) * | 2020-07-07 | 2020-10-30 | 武汉华星光电半导体显示技术有限公司 | Flexible display panel and preparation method thereof |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114120842A (en) * | 2021-12-13 | 2022-03-01 | 武汉华星光电半导体显示技术有限公司 | Display panel and display terminal |
| WO2023108759A1 (en) * | 2021-12-13 | 2023-06-22 | 武汉华星光电半导体显示技术有限公司 | Display panel and display terminal |
| CN114373391A (en) * | 2022-01-11 | 2022-04-19 | 武汉华星光电半导体显示技术有限公司 | Foldable display module |
| CN114842747A (en) * | 2022-04-11 | 2022-08-02 | 昆山国显光电有限公司 | Flexible cover plate, flexible display screen and electronic equipment |
| CN114842747B (en) * | 2022-04-11 | 2024-04-26 | 昆山国显光电有限公司 | Flexible cover plate, flexible display screen and electronic equipment |
| CN115019651B (en) * | 2022-06-20 | 2023-05-23 | 昆山国显光电有限公司 | Crimping display module and production process thereof |
| CN115019651A (en) * | 2022-06-20 | 2022-09-06 | 昆山国显光电有限公司 | Curled display module and production process thereof |
| CN114973968A (en) * | 2022-06-22 | 2022-08-30 | 武汉天马微电子有限公司 | Display module and display device |
| CN115083277A (en) * | 2022-06-22 | 2022-09-20 | 合肥维信诺科技有限公司 | Display module and display device |
| CN115171533A (en) * | 2022-06-29 | 2022-10-11 | 昆山国显光电有限公司 | Cover plate, foldable display module and display device |
| CN115171533B (en) * | 2022-06-29 | 2024-02-20 | 昆山国显光电有限公司 | Cover plate, foldable display module and display device |
| CN115240557A (en) * | 2022-08-02 | 2022-10-25 | 昆山国显光电有限公司 | Display module and display device |
| WO2024027023A1 (en) * | 2022-08-02 | 2024-02-08 | 昆山国显光电有限公司 | Display module and display apparatus |
| WO2024026962A1 (en) * | 2022-08-05 | 2024-02-08 | 武汉华星光电半导体显示技术有限公司 | Flexible display device |
| WO2024045334A1 (en) * | 2022-08-31 | 2024-03-07 | 合肥维信诺科技有限公司 | Display module and display device |
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