CN216980036U - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN216980036U CN216980036U CN202220482153.4U CN202220482153U CN216980036U CN 216980036 U CN216980036 U CN 216980036U CN 202220482153 U CN202220482153 U CN 202220482153U CN 216980036 U CN216980036 U CN 216980036U
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Abstract
The utility model discloses a display panel and a display device. The display panel includes: plane display district and cambered surface display district, display panel includes: the display screen is arranged in the plane display area and the cambered surface display area; the first heat dissipation layer is arranged in the plane display area; the second heat dissipation layer is arranged in the cambered surface display area; the material of the first heat dissipation layer is different from the material of the second heat dissipation layer, and the flexural modulus of the second heat dissipation layer is smaller than that of the first heat dissipation layer.
Description
Technical Field
The present invention relates to but not limited to the field of display technologies, and in particular, to a display panel and a display device.
Background
At present, the display panel with curved side display is widely applied to electronic products such as mobile phones and tablet computers due to the advantages of beautiful appearance, large screen occupation ratio, comfortable holding and the like. In an electronic product adopting a display panel with side curved surface display, the larger the bending angle of the side curved surface of the display panel is, the greater the competitiveness of the product is. However, as the bending angle of the curved surface on the side of the display panel is larger, the black frame defect is more likely to occur on the side of the display panel.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a display panel and a display device, which can solve the problem of poor black frame of a cambered surface display area of the display panel in some technologies.
An embodiment of the present invention provides a display panel, including: plane display district and cambered surface display area, display panel includes: the display screen is arranged in the plane display area and the cambered surface display area; the first heat dissipation layer is arranged in the plane display area; the second heat dissipation layer is arranged in the cambered surface display area; the material of the first heat dissipation layer is different from the material of the second heat dissipation layer, and the flexural modulus of the second heat dissipation layer is smaller than that of the first heat dissipation layer.
The embodiment of the utility model also provides a display device which comprises the display panel.
According to the display panel provided by the embodiment of the utility model, the bending modulus of the second heat dissipation layer positioned in the arc surface display area is smaller than that of the first heat dissipation layer positioned in the plane display area, so that the second heat dissipation layer can still be completely attached to the display screen under the condition that the arc surface display area has a large bending angle, the stress of the display screen in the plane display area and the arc surface display area is uniform, and the problem of poor black frame of the arc surface display area is solved.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the example serve to explain the principles of the utility model and not to limit the utility model.
FIG. 1 is a schematic cross-sectional view of a display panel in some technologies;
FIG. 2 is a schematic diagram of a force applied to a display screen of the display panel of FIG. 1;
FIG. 3 is a schematic diagram of a black box defect in a curved display area in some techniques;
FIG. 4 is a schematic illustration of the location of a display panel section in an exemplary embodiment;
FIG. 5 is a schematic cross-sectional view taken along the line A-A in FIG. 4;
FIG. 6 is a schematic diagram of the structure of the adhesive layer, the buffer layer and the heat dissipation layer in the display panel of FIG. 5;
FIG. 7 is a schematic view of another cross-sectional structure taken along the line A-A in FIG. 4;
fig. 8 is a schematic structural view of an adhesive layer, a buffer layer, a heat dissipation layer, and a combination layer in the display panel having the structure shown in fig. 7.
Detailed Description
The present invention has been described in terms of several embodiments, but the description is intended to be exemplary, rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible that are within the scope of the described embodiments of the utility model. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present invention includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements of the present invention that have been disclosed may also be combined with any conventional features or elements to form unique inventive aspects as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this disclosure may be implemented separately or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Furthermore, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present invention.
In the present invention, the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise explicitly defined or limited. For example, it may be a fixed connection, or a removable connection, or an integral connection; can be a mechanical connection, or an electrical connection; either directly or indirectly through intervening components, or both may be interconnected. The meaning of the above terms in the present invention can be understood by those of ordinary skill in the art as appropriate. Here, "electrically connected" includes a case where constituent elements are connected together by an element having some kind of electrical action. The "element having some kind of electrical function" is not particularly limited as long as it can transmit an electrical signal between connected components. Examples of the "element having some kind of electric function" include not only an electrode and a wiring but also a switching element such as a transistor, a resistor, an inductor, a capacitor, another element having one or more functions, and the like.
In the drawings, the size of the constituent elements, the thickness of layers, or regions may be exaggerated for clarity. Therefore, one mode of the present invention is not necessarily limited to the dimensions, and the shape and size of each component in the drawings do not reflect a true scale. In addition, the drawings schematically show desirable examples, and one embodiment of the present invention is not limited to the shapes, numerical values, and the like shown in the drawings.
In order to keep the following description of the embodiments of the present invention clear and concise, a detailed description of some known functions and components of the utility model are omitted. The drawings of the embodiments of the utility model only relate to the structures related to the embodiments of the utility model, and other structures can refer to common designs.
Fig. 1 is a schematic cross-sectional view of a display panel in some technologies. The display panel 100 includes a flat display area 101 and a curved display area 102. Fig. 1 schematically illustrates the structure of a display panel 100, and as shown in fig. 1, the display panel 100 includes a cover plate 1, a display panel 4, and a heat dissipation layer 5. In some technologies, the heat dissipation layer 5 is made of a copper foil material, and has a large bending modulus, and in a case where the bending angle of the arc display area 102 is large (for example, when the bending angle of the cover plate of the arc display area relative to the cover plate of the flat display area is greater than or equal to 75 degrees, the bending angle is large), due to the large bounce of the copper foil, the heat dissipation layer 5 and the display screen 4 have a bounce gap 9 in the arc display area 102, so that the heat dissipation layer 5 cannot be completely attached to the display screen 4.
Fig. 2 is a schematic diagram of a stress of the display screen of the display panel in fig. 1. As shown in FIG. 2, the tensile stress of the heat dissipation layer 5 on the display screen 4 at the arc display area 102 is F1The tensile stress of the heat dissipation layer 5 at the flat display area 101 is F2Between the display screen 4 and the heat dissipation layer 5In the presence of a rebound gap 9, F1>F2The display screen 4 is stressed unevenly. Under such a non-uniform stress state, the heat dissipation layer 5 is likely to wrinkle at the edge of the arc display area 102, and the thin film transistor in the display screen 4 located at the arc display area 102 is likely to have characteristic deviation, resulting in a poor black frame at the arc display area 102. Fig. 3 is a schematic diagram of a black frame defect in an arc display area in some technologies, where when the arc display area has the black frame defect, a flat display area of a display panel can normally display, and the arc display area appears black. Also, in the case where there is a bounce gap 9 between the display panel 4 and the heat dissipation layer 5, there is a risk that the display panel 4 peels off.
Based on the above findings, an embodiment of the present invention provides a display panel, including: plane display district and cambered surface display district, display panel includes: the display screen is arranged in the plane display area and the cambered surface display area; the first heat dissipation layer is arranged in the plane display area; the second heat dissipation layer is arranged in the cambered surface display area; the material of the first heat dissipation layer is different from the material of the second heat dissipation layer, and the flexural modulus of the second heat dissipation layer is smaller than that of the first heat dissipation layer.
In the embodiment of the utility model, the bending modulus of the second heat dissipation layer positioned in the cambered surface display area is smaller than that of the first heat dissipation layer positioned in the plane display area, so that the second heat dissipation layer can still be completely attached to the display screen under the condition that the cambered surface display area has a large bending angle, the stress of the display screen in the plane display area and the cambered surface display area is uniform, and the problem of poor black frame of the cambered surface display area is solved. And, owing to eliminated bounce-back clearance, can avoid the second heat dissipation layer fold to appear, reduced the risk that the display screen peeled off.
In the embodiment of the present invention, the display screen may be a flexible display screen, and the present disclosure does not limit the type and specific structure of the display screen.
The display panel provided by the embodiment of the utility model is defined with a plane display area and an arc surface display area. In the case that the display panel is quadrilateral, the display panel may include a flat display area and an arc display area, and the arc display area may be located at one side of the flat display area; or, the display panel may include a flat display area and two arc display areas, and the two arc display areas may be located at two ends of the flat display area respectively; or, the display panel may include three or more arc display areas, and the positions of the arc display areas may be set as needed. The display panel may be in other shapes, such as a triangle, a circle, an ellipse, a polygon, and the like, in which case, the number and the positions of the flat display area and the arc display area may be set as needed, which is not limited by the present disclosure.
In some exemplary embodiments, the material of the first heat dissipation layer is copper foil, and the material of the second heat dissipation layer is plastic.
In some exemplary embodiments, the material of the second heat dissipation layer is Polyethylene terephthalate (PET) or Polyimide (PI).
In other embodiments, other plastic materials can be used to prepare the second heat dissipation layer, which is not limited by the present disclosure. The first heat dissipation layer located in the flat display area can be prepared by using a material such as copper foil.
In some exemplary embodiments, the second heat dissipation layer has a uniform thickness and is equal to the thickness of the first heat dissipation layer.
In this embodiment, the thickness of the first heat dissipation layer may be a perpendicular distance between a surface of the first heat dissipation layer on a side close to the display screen and a surface of the first heat dissipation layer on a side far from the display screen. The thickness of the second heat dissipation layer may be a distance between a surface of the second heat dissipation layer on a side close to the display screen and a surface of the second heat dissipation layer on a side far from the display screen in a direction perpendicular to a tangent plane of the arc-shaped surface of the second heat dissipation layer.
In some exemplary embodiments, the display panel further includes: the first buffer layer is positioned in the plane display area, and the second buffer layer is positioned in the cambered surface display area; the first bonding layer is positioned in the plane display area, and the second bonding layer is positioned in the cambered surface display area; the first bonding layer is positioned on one side, close to the display screen, of the first buffer layer, and the first heat dissipation layer is positioned on one side, far away from the display screen, of the first buffer layer; the second bonding layer is located one side of the second buffer layer close to the display screen, and the second heat dissipation layer is located one side of the second buffer layer far away from the display screen.
In this embodiment, the first buffer layer and the second buffer layer can play a role in buffering stress, which is helpful for improving the impact resistance of the display panel.
In some exemplary embodiments, the first adhesive layer and the second adhesive layer are of unitary construction, and the first buffer layer and the second buffer layer are of unitary construction.
In some exemplary embodiments, the material of the first buffer layer and the second buffer layer is Foam (Foam), and the material of the first adhesive layer and the second adhesive layer is mesh glue (EMBO).
In other embodiments, other materials may be used for the first buffer layer, the second buffer layer, the first adhesive layer, and the second adhesive layer, which is not limited by the present disclosure.
In some exemplary embodiments, the second adhesive layer, the second buffer layer, and the second heat dissipation layer are a unitary structure.
In some exemplary embodiments, the thickness of the integrated structure formed by the second adhesive layer, the second buffer layer and the second heat dissipation layer is equal to the total thickness of the first adhesive layer, the first buffer layer and the first heat dissipation layer.
In some exemplary embodiments, the material of the second adhesive layer, the second buffer layer and the second heat dissipation layer is plastic.
In some exemplary embodiments, the second heat dissipation layer, the second buffer layer, and the second adhesive layer are black in color.
In some exemplary embodiments, the display panel further includes: the cover plate is arranged in the plane display area and the cambered surface display area; the cover plate is positioned on one side of the display screen far away from the heat dissipation layer.
In this embodiment, the cover plate is used to protect the display screen. The cover plate may be made of resin, or may be made of other materials, which is not limited in this disclosure.
In some exemplary embodiments, the display panel further includes: the polaroid is arranged in the planar display area and the cambered surface display area; the polaroid is located between display screen and the apron.
In some exemplary embodiments, the polarizer and the cover plate are connected by a third adhesive layer.
In some exemplary embodiments, the third Adhesive layer is an Optical Clear Adhesive (OCA).
The material of the optical cement may include a thermosetting type optical cement and an ultraviolet curing type optical cement. In other embodiments, the third adhesive layer may be other types of adhesives, and the disclosure is not limited thereto.
The display panel of the present invention is explained below by way of a detailed example.
FIG. 4 is a schematic diagram of the partition positions of the display panel in an exemplary embodiment. As shown in fig. 4, the display panel in this example is rectangular (e.g., rounded rectangle). The display panel may include a flat display area 101 and two arc display areas 102, where the two arc display areas 102 are respectively located at the left and right sides of the flat display area 101. Fig. 5 is a schematic sectional view along the direction a-a in fig. 4. As shown in fig. 5, the left side of the dotted line is a flat display area 101, and the right side of the dotted line is an arc display area 102. The display panel may include: the display panel comprises a cover plate 1, a third bonding layer 2, a polaroid 3 and a display screen 4, a second bonding layer 7, a second buffer layer 6 and a second heat dissipation layer 5 which are sequentially stacked in an arc display area 102, and a first bonding layer 7 ', a first buffer layer 6 ' and a first heat dissipation layer 5 ' which are sequentially stacked in a flat display area 101. The second heat dissipation layer 5 is made of plastic, and the first heat dissipation layer 5' is made of copper foil. The thickness of the second heat dissipation layer 5 is uniform and equal to the thickness of the heat dissipation layer 5', and is d. First tie coat 7 'and second tie coat 7 structure as an organic whole, the material is the net grain glue, first buffer layer 6' with second buffer layer 6 structure as an organic whole, the material is the bubble cotton. Because the second heat dissipation layer 5 located in the arc surface display area 102 has a lower bending modulus, the second heat dissipation layer can be completely attached to the display screen 4 even under the condition of a large bending angle, a rebound gap cannot occur between the second heat dissipation layer 5 and the display screen 4, layering cannot occur, the uniform stress of the display screen 4 is ensured, and various defects are avoided.
Fig. 6 is a schematic structural view of an adhesive layer, a buffer layer and a heat dissipation layer in the display panel having the structure shown in fig. 5. As shown in fig. 6, the first bonding layer 7 'and the second bonding layer 7 are integrated, the first buffer layer 6' and the second buffer layer 6 are integrated and respectively disposed in the flat display area 101 and the arc display area 102, and the second heat dissipation layer 5 is disposed in the arc display area 102 on both sides of the flat display area 101. The second heat dissipation layer 5 and the first heat dissipation layer 5' are made of different materials and have a thickness d. In the flat display area 101 and the arc display areas 102 on both sides, the second heat dissipation layer 5 and the first heat dissipation layer 5' are arranged in a matrix.
Fig. 7 is another schematic sectional view along the direction a-a in fig. 4. As shown in fig. 7, a flat display area 101 is located on the left side of the dotted line, and a curved display area 102 is located on the right side of the dotted line. The display panel may include: the flat panel display comprises a cover plate 1, a second bonding layer 2, a polarizer 3 and a display screen 4, wherein a first bonding layer 7 ', a first buffer layer 6 ' and a first heat dissipation layer 5 ' are sequentially stacked in a flat display area 101, and a combination layer 10 is positioned in an arc display area 102. The combination layer 10 is made of plastic and is an integrated structure formed by the second adhesive layer, the second buffer layer and the second heat dissipation layer, and the combination layer 10 has a uniform thickness equal to the total thickness of the first adhesive layer 7 ', the first buffer layer 6 ' and the first heat dissipation layer 5 ', which are d 1. The total thickness of the first adhesive layer 7 ', the first buffer layer 6 ' and the first heat dissipation layer 5 ' may be a perpendicular distance between a surface of the first adhesive layer 7 ' on a side close to the display panel 4 and a surface of the first heat dissipation layer 5 ' on a side away from the display panel 4. The thickness of the combination layer 10 may be a distance between a surface of the combination layer 10 on a side close to the display 4 and a surface of the combination layer 10 on a side far from the display 4 in a direction perpendicular to a tangent plane to the arc-shaped surface of the combination layer 10. The first bonding layer 7 ' is made of mesh glue, the first buffer layer 6 ' is made of foam, and the first heat dissipation layer 5 ' is made of copper foil. The combined layer 10 is black. Through the second heat dissipation layer that will be located cambered surface display area 102, second tie coat and second buffer layer set up to the body structure of plastic material for the flexural modulus who is located cambered surface display area 102's combined layer 10 is lower, even if also can laminate completely with display screen 4 under the condition of big bend angle, rebound clearance can not appear between combined layer 10 and the display screen 4, can not take place the layering, and guaranteed that the atress of display screen 4 is even, avoid producing various badly.
Fig. 8 is a schematic structural diagram of an adhesive layer, a buffer layer, a heat dissipation layer and a combination layer in the display panel having the structure shown in fig. 7. As shown in fig. 8, the combined layer 10 is located in the arc display areas 102 on both sides of the flat display area 101. The combined layer 10 has a uniform thickness equal to the total thickness of the first adhesive layer 7 ', the first buffer layer 6 ' and the first heat dissipation layer 5 ', and is d 1. In the flat display area 101 and the arc display areas 102 on both sides, the first bonding layer 7 ', the first buffer layer 6 ', the first heat dissipation layer 5 ' and the combination layer 10 are arranged in a ' chuan ' shape.
The embodiment of the utility model also provides a display device which comprises the display panel in any one of the embodiments. In some exemplary embodiments, the display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame or a navigator, etc. However, the embodiment of the present invention does not limit this.
In the description of the embodiments of the present invention, the terms "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (15)
1. A display panel, comprising: plane display district and cambered surface display area, display panel includes:
the display screen is arranged in the plane display area and the cambered surface display area; and the number of the first and second groups,
the first heat dissipation layer is arranged in the plane display area;
the second heat dissipation layer is arranged in the cambered surface display area;
the material of the first heat dissipation layer is different from the material of the second heat dissipation layer, and the flexural modulus of the second heat dissipation layer is smaller than that of the first heat dissipation layer.
2. The display panel of claim 1, wherein the first heat dissipation layer is made of copper foil and the second heat dissipation layer is made of plastic.
3. The display panel according to claim 2, wherein the material of the second heat dissipation layer is polyethylene terephthalate or polyimide.
4. The display panel according to claim 1, wherein the second heat dissipation layer has a uniform thickness and is equal to the first heat dissipation layer.
5. The display panel according to claim 1, wherein the display panel further comprises:
the first buffer layer is positioned in the plane display area, and the second buffer layer is positioned in the cambered surface display area; and the number of the first and second groups,
the first bonding layer is positioned in the plane display area, and the second bonding layer is positioned in the cambered surface display area;
the first bonding layer is positioned on one side, close to the display screen, of the first buffer layer, and the first heat dissipation layer is positioned on one side, far away from the display screen, of the first buffer layer; the second bonding layer is located one side of the second buffer layer close to the display screen, and the second heat dissipation layer is located one side of the second buffer layer far away from the display screen.
6. The display panel according to claim 5, wherein the first adhesive layer and the second adhesive layer are of a unitary structure, and wherein the first buffer layer and the second buffer layer are of a unitary structure.
7. The display panel according to claim 6, wherein the first adhesive layer and the second adhesive layer are made of reticulated adhesive, and the first buffer layer and the second buffer layer are made of foam.
8. The display panel according to claim 5, wherein the second adhesive layer, the second buffer layer, and the second heat dissipation layer are of a unitary structure.
9. The display panel according to claim 8, wherein the thickness of the integrated structure formed by the second adhesive layer, the second buffer layer and the second heat dissipation layer is equal to the total thickness of the first adhesive layer, the first buffer layer and the first heat dissipation layer.
10. The display panel according to claim 8, wherein the second adhesive layer, the second buffer layer, and the second heat dissipation layer are made of plastic.
11. The display panel according to claim 1, characterized in that the display panel further comprises: the cover plate is arranged in the plane display area and the cambered surface display area; the cover plate is positioned on one side of the display screen, which is far away from the heat dissipation layer.
12. The display panel according to claim 11, characterized by further comprising: the polaroid is arranged in the plane display area and the cambered surface display area; the polaroid is located between the display screen and the cover plate.
13. The display panel of claim 12, wherein the polarizer is connected to the cover plate by a third adhesive layer.
14. The display panel according to claim 13, wherein the third adhesive layer is an optical glue.
15. A display device characterized by comprising the display panel according to any one of claims 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220482153.4U CN216980036U (en) | 2022-03-07 | 2022-03-07 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220482153.4U CN216980036U (en) | 2022-03-07 | 2022-03-07 | Display panel and display device |
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| Publication Number | Publication Date |
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| CN216980036U true CN216980036U (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220482153.4U Active CN216980036U (en) | 2022-03-07 | 2022-03-07 | Display panel and display device |
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| CN (1) | CN216980036U (en) |
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