CN113963632A - Display module and display device - Google Patents

Display module and display device Download PDF

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Publication number
CN113963632A
CN113963632A CN202111241884.6A CN202111241884A CN113963632A CN 113963632 A CN113963632 A CN 113963632A CN 202111241884 A CN202111241884 A CN 202111241884A CN 113963632 A CN113963632 A CN 113963632A
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China
Prior art keywords
display panel
conductive
display
foam
edge
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Granted
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CN202111241884.6A
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Chinese (zh)
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CN113963632B (en
Inventor
袁月
吴海妍
熊志勇
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Wuhan Tianma Microelectronics Co Ltd
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Wuhan Tianma Microelectronics Co Ltd
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Publication of CN113963632A publication Critical patent/CN113963632A/en
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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
    • G09F9/33—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 being semiconductor devices, e.g. diodes
    • 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
    • G09F9/35—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 being liquid crystals
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
    • H05F3/00—Carrying-off electrostatic charges
    • H05F3/02—Carrying-off electrostatic charges by means of earthing connections

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The embodiment of the invention provides a display module, relates to the technical field of display, and is used for solving the problem that static electricity is easy to accumulate at the edge of a display panel. The display module assembly includes: a display panel having an edge; the support film is positioned on one side of the display panel far away from the light emergent side; the foam is positioned on one side of the support film, which is far away from the display panel; the first conductive part is positioned on one side of the display panel far away from the light emergent side; the orthographic projection of the first conductive part on the plane of the display panel is at least partially positioned in the display area, and the orthographic projection of the first conductive part on the plane of the display panel is at least partially overlapped with the edge; the grounding part is positioned on one side of the foam far away from the support film; the grounding part is in contact with the first conductive part.

Description

Display module and display device
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of display, in particular to a display module and a display device.
[ background of the invention ]
With the continuous development of science and technology, more and more display devices are widely applied to daily life and work of people, and become an indispensable important tool for people at present. Moreover, with the continuous development of display technology, the display effect requirements of consumers on the display are also continuously improved.
At present, in the production, test and use processes of display panels, static electricity is easily generated at the edge positions of the display panels, and the static electricity is accumulated to a certain degree to cause the abnormal lightening of the edges of the display panels due to the electrostatic discharge phenomenon. In addition, if static electricity is conducted into the display panel, the electronic devices in the display panel are damaged.
[ summary of the invention ]
In view of this, embodiments of the present invention provide a display module and a display device, so as to solve the problem that static electricity is easily accumulated at the edge of a display panel.
In one aspect, an embodiment of the present invention provides a display module, including:
a display panel having an edge;
the supporting film is positioned on one side of the display panel, which is far away from the light emergent side;
the foam is positioned on one side of the support film, which is far away from the display panel;
the orthographic projection of the first conductive part on the plane of the display panel is at least partially positioned in the display area, and the orthographic projection of the first conductive part on the plane of the display panel is at least partially overlapped with the edge;
the grounding part is positioned on one side of the foam far away from the support film; the ground portion is electrically connected to the first conductive portion.
In another aspect, an embodiment of the present invention provides a display device, which includes the display panel described above.
According to the display module and the display device provided by the embodiment of the invention, the grounding part and the first conductive part are arranged on one side of the display panel far away from the light emergent side, and the orthographic projection of the first conductive part on the plane where the display panel is located is overlapped with the edge of the display panel, so that static electricity generated at the edge of the display panel can be conducted to the grounding part through the first conductive part and conducted away. The problem of the edge of display panel shines among the prior art can be solved on the one hand, and on the other hand also can avoid static to get into display panel's inside, is favorable to guaranteeing the reliability of display panel internal device. In addition, the orthographic projection of the first conductive part on the plane of the display panel is at least partially positioned in the display area, so that the area of the first conductive part can be enlarged as much as possible while the orthographic projection of the first conductive part on the plane of the display panel is ensured to be overlapped with the edge of the display panel. By the arrangement, the electrostatic conductivity of the first conductive part can be improved, so that static electricity can be evacuated from the edge of the display panel more quickly, and the reliability of the display panel can be improved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic top view of a display module according to an embodiment of the present invention;
FIG. 2 is a schematic top view of another display module according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a display module near a first edge according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a display panel near a second edge according to an embodiment of the present invention;
fig. 5 is a schematic top view of a foam according to an embodiment of the present invention;
FIG. 6 is a schematic top view of a support film according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a support film according to an embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of another display module according to an embodiment of the invention at a position near a first edge;
FIG. 9 is a schematic cross-sectional view of another display module according to an embodiment of the invention, the cross-sectional view being near a second edge;
FIG. 10 is a schematic cross-sectional view of another display module according to an embodiment of the invention, the display module being located near a second edge;
FIG. 11 is a schematic cross-sectional view of another display module according to an embodiment of the invention at a position near a first edge;
fig. 12 is a schematic diagram of a display device according to an embodiment of the invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be understood that although the terms first, second, etc. may be used to describe conductive portions in embodiments of the present invention, these conductive portions should not be limited to these terms. These terms are only used to distinguish conductive portions that differ from one another in respective locations. For example, the first conductive portion may also be referred to as the second conductive portion, and similarly, the second conductive portion may also be referred to as the first conductive portion, without departing from the scope of embodiments of the present invention.
The embodiment of the invention provides a display module, which comprises a display panel, a support film, foam, a first conductive part and a grounding part. As shown in fig. 1, fig. 2, fig. 3 and fig. 4, fig. 1 is a schematic top view of a display module according to an embodiment of the present invention, fig. 2 is a schematic top view of another display module according to an embodiment of the present invention, fig. 3 is a schematic cross-sectional view of a display module according to an embodiment of the present invention at a position close to a first edge, fig. 4 is a schematic cross-sectional view of a display panel according to an embodiment of the present invention at a position close to a second edge, and only a first conductive portion 41 and the display panel 1 are shown in fig. 1 and fig. 2 to more clearly illustrate a relative position relationship between the first conductive portion and the display panel according to an embodiment of the present invention. As shown in fig. 1, 2, 3 and 4, the display panel 1 has an edge 10.
Illustratively, as shown in fig. 1 and 2, the display panel 1 includes a display area 11 and a non-display area 12. The display region 11 includes a plurality of pixel units (not shown) and signal lines (not shown) electrically connected to the pixel units, and the non-display region 12 includes wirings and/or driving circuits. For example, the display panel may be a display panel adopting a self-Light Emitting technology, that is, the pixel unit may include any one of an Organic Light Emitting Diode (OLED), a Quantum dot Light Emitting Diode (QLED), and a Micro Light Emitting Diode (Micro-LED). Alternatively, the Display panel may be a Liquid Crystal Display (LCD) panel.
Illustratively, as shown in fig. 1 and 2, the non-display area 12 includes a first non-display area 121. The first non-display area 121 at least partially surrounds the display area 11. The edge 10 comprises a first edge 101. The first non-display area 121 is adjacent to the first edge 101. The first edge 101 may be regarded as an edge of the first non-display area 121 away from the display area 11.
Currently, when manufacturing the display panel 1, a large plate including a plurality of display panels 1 is usually manufactured on a substrate with a large area through a thin film process, and then the large plate is cut to form the display panel 1 with a smaller area than the large plate. Illustratively, the first edge 101 of the display panel 1 may correspond to a cutting mark when cutting a large board.
With the continuous development of display technology, a structure in which a through hole is formed in a display panel to accommodate a light sensor such as a camera or an iris sensor is currently available, and as shown in fig. 2, the display panel 1 includes a through hole 20. For example, in manufacturing the display panel 1 having the structure shown in fig. 2, the through holes 20 may be formed on the substrate by a cutting process, and then each film layer structure in the display panel 1 may be manufactured on the substrate including the through holes 20. The location of the through hole 20 is not shown. After the fabrication of each film structure in the display panel 1 is completed, the light sensor may be disposed at a position corresponding to the through hole 20.
As shown in fig. 2, the edge 10 of the display panel includes a second edge 102 in addition to the first edge 101, the second edge 102 surrounding the through hole 20. Illustratively, when the through-hole 20 is formed by a cutting process, the second edge 102 may correspond to a cutting trace when the through-hole 20 is cut. As shown in fig. 2, the display panel 1 including the through-hole 20 may be regarded as being formed in a ring structure in which the first edge 101 is an outer edge of the display panel 1 and the second edge 102 is an inner edge of the display panel 1. The first edge 101 surrounds the second edge 102.
As shown in fig. 3 and 4, the display module 100 further includes a support film 2, a foam 3, and a ground portion 5. The support film 2 is located on a side of the display panel 1 away from the light exit side of the display module 100. The arrow z in fig. 3 and 4 indicates the light emitting direction of the display module 100. The support film 2 is provided to support the display panel 1. The foam 3 is located on the side of the support film 2 away from the display panel 1. The foam 3 includes a foam layer 31. The foaming layer 31 can protect the display panel 1, and when the display module 100 is moved or used, if the display module 100 is impacted or subjected to other external forces, the foaming layer 31 can absorb stress, so that a certain stress buffering effect is exerted on the display panel 1, and the display panel 1 is protected from being damaged. The grounding part 5 is positioned on one side of the foam 3 far away from the support film 2. In the embodiment of the present invention, the ground portion 5 is electrically connected to the first conductive portion 41.
As shown in fig. 4, when the display module 100 including the through hole 20 is formed, the support film 2, the foam 3, and the ground portion 5 are formed with a through hole structure at a position corresponding to the through hole 20 of the display panel 1.
When the first conductive part 41 is disposed, the embodiment of the invention may make the first conductive part 41 be located on a side of the display panel 1 away from the light exit side, and make an orthographic projection of the first conductive part 41 on a plane where the display panel is located at least partially overlap with the edge 10 of the display panel 1. That is, the orthographic projection of the first conductive part 41 on the plane of the display panel is arranged close to the edge 10 of the display panel 1. In the embodiment of the present invention, the orthographic projection of the first conductive part 41 on the plane of the display panel is at least partially located in the display area 11 of the display panel 1. As shown in fig. 1 and fig. 2, the orthographic projection of the first conductive part 41 on the plane of the display panel 1 covers the display area 11.
Illustratively, as shown in fig. 1 and 3, the first conductive part 41 includes a first sub-conductive part 411, and an orthographic projection of the first sub-conductive part 411 on a plane of the display panel at least partially overlaps the first edge 101. As shown in fig. 2 and 4, the first conductive part 41 further includes a second sub-conductive part 412, and an orthographic projection of the second sub-conductive part 412 on the plane of the display panel at least partially overlaps the second edge 102. And, the orthographic projections of the first conductive sub-portion 411 and the second conductive sub-portion 412 on the plane of the display panel are both at least partially located in the display area 11.
In the display module 100 according to the embodiment of the present invention, the grounding portion 5 and the first conductive portion 41 are disposed on the side of the display panel 1 away from the light emitting side, and the orthographic projection of the first conductive portion 41 on the plane of the display panel 1 is overlapped with the edge 10 of the display panel 1, so that the static electricity generated at the edge 10 of the display panel 1 can be conducted to the grounding portion 5 through the first conductive portion 41 and conducted away. On one hand, the problem that the edge 10 of the display panel 1 in the prior art is shiny can be solved, and in addition, static electricity can be prevented from entering the display panel 1, which is beneficial to ensuring the reliability of devices inside the display panel 1. Furthermore, the embodiment of the invention can ensure that the orthographic projection of the first conductive part 41 on the plane of the display panel 1 is at least partially positioned in the display area 11, and simultaneously ensure that the orthographic projection of the first conductive part 41 on the plane of the display panel 1 is overlapped with the edge 10 of the display panel 1, the area of the first conductive part 41 can be made as large as possible. With this configuration, the electrostatic conductivity of the first conductive part 41 can be improved, so that the static electricity can be evacuated from the edge 10 of the display panel 1 more quickly, which is beneficial to improving the reliability of the display panel 1.
Illustratively, the embodiment of the present invention may align the edge of the first conductive part 41 with the edge 10 of the display panel 1. Specifically, the embodiment of the present invention may align the edge of the first sub-conductive portion 411 with the first edge 101 of the display panel 1, and align the edge of the second sub-conductive portion 412 with the second edge 102 of the display panel. The first sub-conductive part 411 extends from the first edge 101 of the display panel 1 to a direction close to the display area 11 of the display panel 1, and the first sub-conductive part 411 is cut off at a position corresponding to the display area 11; the second sub-conductive portion 412 extends from the second edge 102 of the display panel 1 to a direction close to the display area 11 of the display panel 1, and the second sub-conductive portion 412 is also cut off at a position corresponding to the display area 11.
As shown in fig. 3 and 4, the display module 100 further includes a second conductive portion 42. The second conductive portion 42 is located between the first conductive portion 41 and the ground portion 5. The second conductive portion 42 is in contact with the first conductive portion 41. The first conductive portion 41 is electrically connected to the ground portion 5 through the second conductive portion 42.
Illustratively, as shown in FIG. 3, the second conductive portion 42 includes a third sub-conductive portion 421. The first sub-conductive portion 411 is electrically connected to the ground portion 5 through the third sub-conductive portion 421. In addition to the third sub-conductive portion, as shown in fig. 4, the second conductive portion 42 further includes a fourth sub-conductive portion 422, and the second sub-conductive portion 412 is electrically connected to the ground portion 5 through the fourth sub-conductive portion 422.
In the embodiment of the present invention, as shown in fig. 3 and 4, the foam 3 includes a foam glue layer 32 in addition to the foam layer 31. One portion of the foam adhesive layer 32 is located between the foam layer 31 and the support film 2, and the other portion of the foam adhesive layer 32 is located between the second conductive portion 42 and the support film 2. The foam rubber layer 32 is provided to bond the foam layer 31 and the second conductive portion 42 to the support film 2, respectively.
Illustratively, the foam layer 32 includes conductive adhesive. The conductive paste includes conductive particles.
In the embodiment of the present invention, the foam adhesive layer 32 provided by using conductive adhesive may be reused as the first conductive portion 41. With such an arrangement, the foam adhesive layer 32 can not only serve to bond the foam layer 31 and the support film 2, but also serve as a static electricity conducting medium. That is, the structural stability of the display module 100 can be improved, and the conduction path of static electricity can be increased, so that static electricity generated at the edge 10 of the display panel can be conducted away in time. Moreover, in the embodiment of the invention, the foam adhesive layer 32 is multiplexed into the first conductive portion 41, and there is no need to separately provide an adhesive layer for performing an adhesive function and a conductive portion for performing an electrostatic conduction function, which is beneficial to reducing the thickness of the display module 100.
For example, the foam adhesive layer 32 may be configured as a full-face structure according to an embodiment of the present invention.
Alternatively, as shown in fig. 5, fig. 5 is a schematic top view of a foam provided in the embodiment of the present invention, and in the embodiment of the present invention, the foam adhesive layers 32 may be distributed in a grid shape in a plane where the foam 3 is located. With this arrangement, when the foam 3 is attached to the support film 2, the gas released from the foam layer 31 can be discharged through the cells in the foam adhesive layer 32, and the gas can be prevented from being confined between the foam layer 31 and the foam adhesive layer 32.
Exemplarily, as shown in fig. 6 and 7, fig. 6 is a schematic top view of a support film according to an embodiment of the present invention, and fig. 7 is a schematic cross-sectional view of a support film according to an embodiment of the present invention, where the support film 2 includes a first organic layer 21, a second organic layer 22, and a support film glue layer 23, and the support film glue layer 23 is located between the first organic layer 21 and the second organic layer 22.
Optionally, the support film adhesive layer 23 includes a conductive adhesive. The conductive paste includes conductive particles.
In the embodiment of the present invention, the support film adhesive layer 23 made of conductive adhesive can be reused as the first conductive portion 41. With this arrangement, the support film adhesive layer 23 can function as both the first organic layer 21 and the second organic layer 22 and the support film adhesive layer 23 can function as an electrostatic conductive medium. That is, the structural stability of the display module 100 can be improved, and the conduction path of static electricity can be increased, so that static electricity generated at the edge 10 of the display panel can be conducted away in time. Moreover, in the embodiment of the present invention, the support film adhesive layer 23 is reused as the first conductive portion 41, and there is no need to separately provide an adhesive layer for adhesion and a conductive portion for static conduction, which is beneficial to reducing the thickness of the display module 100.
For example, in the embodiment of the present invention, the supporting film adhesive layer 23 may be configured as a whole structure.
Alternatively, as shown in fig. 6, the supporting film adhesive layer 23 may be distributed in a grid shape in the plane of the supporting film 2 according to the embodiment of the present invention. With the arrangement, the area of the support film glue layer 23 can be reduced while ensuring that static electricity has more conducting paths. Because the elastic modulus of the support film adhesive layer 23 is smaller, the support film 2 can be ensured to provide better support for the display panel 1 while the support film adhesive layer 23 has the conductive function by adopting the arrangement mode of the embodiment of the invention.
For example, as shown in fig. 7, the surface of the first organic layer 21 close to the second organic layer 22 includes a groove 210, and in the embodiment of the present invention, at least a portion of the support film glue layer 23 may be disposed in the groove 210 to reduce the thickness of the support film 2.
In the process of manufacturing the support film 2 having the structure shown in fig. 7, the first organic layer 21 is formed, and then the grid-shaped grooves 210 are formed on the first organic layer 21 by using an exposure etching process. And then preparing the support film adhesive layer 23 in the groove 210, and attaching or coating the second organic layer 22 on one side of the support film adhesive layer 23 away from the first organic layer 21 after the support film adhesive layer 23 is cured.
Illustratively, the material of the first organic layer 21 and the second organic layer 22 includes polyimide.
For example, as shown in fig. 7 and 8, fig. 8 is a schematic cross-sectional view of another display module provided in an embodiment of the invention at a position near the first edge, in the embodiment of the invention, at least a portion of the support film adhesive layer 23 is exposed on the surface of the support film 2. Specifically, when the positions of the supporting film 2 and the display panel 1 are matched, as shown in fig. 8, in the embodiment of the invention, a portion of the supporting film adhesive layer 23 is exposed on the surface of the supporting film 2 close to the edge 10, and another portion of the supporting film adhesive layer 23 is exposed on the surface of the supporting film 2 close to the second conductive portion 42. With this arrangement, static electricity at the edge 10 of the display panel 1 can be made to more easily enter the first conductive part 41 and be transferred to the ground part 5 via the second conductive part 42.
It can be understood that, in the embodiment of the present invention, the support film adhesive layer 23 and the foam adhesive layer 32 are both formed by using conductive adhesives, so that the support film adhesive layer 23 and the foam adhesive layer 32 have electrostatic conductivity at the same time. With this arrangement, the supporting film adhesive layer 23 and the foam adhesive layer 32 can be reused as the first conductive portion 41, so as to reduce the possibility of static electricity accumulating in the display module 100.
In the embodiment of the present invention, the area of the foaming layer 31 may be smaller than the area of the display panel 1. When the foaming layer 31 and the display panel 1 are disposed, as shown in fig. 3 and 4, the embodiment of the invention may make the foaming layer 31 and the edge 10 of the display panel 1 have a distance therebetween along a direction parallel to the plane of the display panel 1. As shown in fig. 3, the embodiment of the invention may have a distance D1 between the foam layer 31 and the first edge 101 of the display panel 1 along a direction parallel to the plane of the display panel 1. As shown in fig. 4, the foam layer 31 is spaced apart from the second edge 102 of the display panel 1 by a distance D2. Both D1 and D2 are greater than 0. With this arrangement, the foam layer 31 can be shrunk in a direction away from the edge 10 of the display panel 1, and the edge of the foam layer 31 is cut off at a side of the edge 10 of the display panel 1 close to the display area 11 of the display panel 1, so that an area where the foam layer 31 is retracted relative to the edge 10 of the display panel 1 can be used as an installation space of the second conductive part 42, and the foam layer 31 and the second conductive part 42 can be overlapped in a direction parallel to the plane of the display panel 1. For example, the embodiment of the invention may dispose the foaming layer 31 and the second conductive portion 42 at the same level in the display module 100. So set up, be favorable to attenuate display module assembly 100's thickness.
Note that D1 and D2 may be equal to each other, or may not be equal to each other, and embodiments of the present invention are not limited to this.
For example, as shown in fig. 9, fig. 9 is a schematic cross-sectional view of another display module provided by the embodiment of the invention at a position close to the second edge, and along a direction parallel to the plane of the display panel 1, the embodiment of the invention may make the shortest distance D3 between the edge of the foaming layer 31 and the edge of the grounding portion 5 greater than 0. Illustratively, the embodiment of the present invention may make the shortest distance D3 greater than the length of the second conductive part 42, wherein the length direction of the second conductive part 42 is parallel to the extending direction of the straight line representing the shortest distance D3. That is, the contraction distance of the foamed layer 31 with respect to the edge of the land portion 5 is set to be large. With such an arrangement, the second conductive part 42 can be sufficiently ensured to have a sufficient accommodating space, so that a situation that a part of the second conductive part 42 and the foaming layer 31 need to be stacked in the thickness direction of the display module 100 due to insufficient accommodating space of the second conductive part 42 when the second conductive part 42 is manufactured is avoided, and the display module 100 can be ensured to have a smaller thickness.
Exemplarily, as shown in fig. 10, fig. 10 is a schematic cross-sectional view of another display module provided by an embodiment of the present invention at a position close to the second edge, where the foam 3 includes an opening 30, and a shortest distance D4 between the opening 30 and the edge 10 of the display panel along a direction parallel to a plane of the display panel is greater than 0 along a direction parallel to the plane of the display panel. The second conductive portion 42 is located within the opening 30. With such an arrangement, the second conductive portion 42 and the foaming layer 31 are overlapped in a direction parallel to the plane of the display panel 1, so that the foaming layer 31 can be ensured to be arranged at the position corresponding to the edge 10 of the display panel 1 while the thickness of the display module 100 is reduced, and the position of the edge 10 of the display panel 1 can be ensured to be well protected.
For example, when manufacturing the display module 100 having the structure shown in fig. 10, the embodiment of the invention may first align and bond the foam 3 and the grounding portion 5 into a whole. The foam 3 is then subjected to a hole digging operation to form an opening 30 in the foam 3, after which the opening 30 is filled with a conductive material to form a second conductive portion 42. Then, the entire structure including the ground portion 5, the foam 3, and the second conductive portion 42 is bonded to the support film 2 in alignment. Then, the whole body including the grounding portion 5, the foam 3, the second conductive portion 42 and the support film 2 is bonded to the display panel 1 in alignment.
Specifically, when the support film adhesive layer is reused as the first conductive portion 41 when forming the opening 30 in the foam 3, the embodiment of the invention may perform a hole digging operation on both the foam layer 31 and the foam adhesive layer 32 to form the opening 30 in the foam 3. If the foam rubber layer is used as the first conductive portion 41, the opening 30 may be formed by drilling only the foam layer 31 according to the embodiment of the present invention.
For example, as shown in fig. 10, in the embodiment of the present invention, the second conductive portion 42 may be in contact with the foamed layer 31 to increase the area of the second conductive portion 42 as much as possible, so as to improve the conductive capability of the second conductive portion 42. Alternatively, as shown in fig. 9, in the embodiment of the present invention, the distance between the second conductive portion 42 and the foamed layer 31 may be set to sufficiently take into account the size of the second conductive portion 42 and the misalignment process when the second conductive portion 42 and the grounding portion 5 are bonded in alignment.
The ground portion 5 is, for example, a copper foil. The copper foil has higher conductivity and good heat dissipation performance and extensibility, and the copper foil is selected to form the grounding part 5 in the embodiment of the invention, so that the static electricity conducting capability of the grounding part 5 can be improved, and static electricity can be quickly dissipated. Moreover, when the display panel 1 is a flexible display panel, the copper foil can be adapted to the bending deformation of the display module 100 when the display module is bent.
Alternatively, when the second conductive part 42 is disposed, if the display module 100 is configured to have the through hole 20 structure as shown in fig. 2, in the embodiment of the invention, the materials of the third sub-conductive part 421 and the fourth sub-conductive part 422 included in the second conductive part 42 may be set to be the same, so that the third sub-conductive part 421 and the fourth sub-conductive part 422 are formed by the same process.
Illustratively, in the embodiment of the present invention, the materials of the third conductive sub-portion 421 and the fourth conductive sub-portion 422 may be configured to include copper foil. As shown in fig. 11, fig. 11 is a schematic cross-sectional view of another display module near the first edge according to an embodiment of the present invention, when the materials of the second conductive portion 42 and the grounding portion 5 are both copper foils, the second conductive portion 42 and the grounding portion 5 may be integrally formed, and no interface is included between the two, so as to simplify the manufacturing process of the display module 100. Specifically, the third sub-conductive portion 421 and the fourth sub-conductive portion 422 included in the second conductive portion 42 may be integrally formed with the ground portion 5, fig. 5 only illustrates the third sub-conductive portion 421, and the fourth sub-conductive portion 422 is similar to the third sub-conductive portion 422, and is not illustrated here.
Alternatively, in the embodiment of the present invention, the material of the second conductive portion 42 including the third sub-conductive portion 421 and the fourth sub-conductive portion 422 may be configured to include conductive adhesive.
Illustratively, in the embodiment of the present invention, the materials of the third sub-conductive portion 421 and the fourth sub-conductive portion 422 may be different. For example, one of them may be provided as a copper foil and the other as a conductive paste. Since the copper foil and the conductive paste are solid, the shapes of which are more easily controlled, than when the material of the second conductive portion is an electrostatic liquid, the difficulty of the manufacturing process of the second conductive portion 42 can be reduced when the second conductive portion 42 is provided along the first edge 101 and the second edge 102. In addition, compared with the static liquid, the resistivity of the copper foil and the conductive adhesive is smaller, so that the arrangement mode provided by the embodiment of the invention is more beneficial to leading static away from the edge 10 of the display panel in time.
Exemplarily, as shown in fig. 3, fig. 4, fig. 8, fig. 9, fig. 10 and fig. 11, the display module 100 according to the embodiment of the present invention further includes a cover plate 6, and the cover plate 6 is located at the light emitting side of the display panel. The cover 6 covers the display panel 1. The cover plate 6 is provided to protect the display panel 1.
For example, as shown in fig. 4, when the display panel 1 includes the through hole 20, the cover plate 6 may cover the through hole 20 to protect the light sensor disposed corresponding to the through hole 20.
As shown in fig. 12, fig. 12 is a schematic view of a display device according to an embodiment of the present invention, and the display device includes the display module 100. The specific structure of the display module 100 has been described in detail in the above embodiments, and is not described herein again. Of course, the display device shown in fig. 12 is only a schematic illustration, and the display device may be any electronic device with a display function, such as a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
As shown in fig. 12, the display device further includes a light sensor 200, and the light sensor 200 is disposed corresponding to the through hole 20 of the display panel.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (16)

1. A display module, comprising:
a display panel having an edge;
the supporting film is positioned on one side of the display panel, which is far away from the light emergent side;
the foam is positioned on one side of the support film, which is far away from the display panel;
the first conductive part is positioned on one side of the display panel far away from the light emergent side; the orthographic projection of the first conductive part on the plane of the display panel is at least partially positioned in the display area, and the orthographic projection of the first conductive part on the plane of the display panel is at least partially overlapped with the edge;
the grounding part is positioned on one side of the foam far away from the support film; the ground portion is electrically connected to the first conductive portion.
2. The display module assembly of claim 1, further comprising a second conductive portion, the second conductive portion being located between the first conductive portion and the ground portion, the first conductive portion being electrically connected to the ground portion through the second conductive portion;
the foam comprises a foaming layer; the foaming layer is arranged at a distance from the edge along a direction parallel to the plane of the display panel, and the foaming layer and the second conductive part at least partially overlap in the direction parallel to the plane of the display panel.
3. The display module of claim 2, wherein the grounding portion is a copper foil.
4. The display module of claim 3, wherein the second conductive portion comprises a copper foil, and the second conductive portion is integrally formed with the ground portion.
5. The display module of claim 2,
the foam also comprises a foam adhesive layer, wherein one part of the foam adhesive layer is positioned between the foaming layer and the supporting film; the other part of the foam adhesive layer is positioned between the first conductive part and the support film.
6. The display module of claim 5,
the foam adhesive layer comprises conductive adhesive, and the conductive adhesive is reused as the first conductive part.
7. The display module of claim 6,
the foam glue layers are distributed in a grid shape in the plane where the foam is located.
8. The display module of claim 1,
the support film further comprises a first organic layer, a second organic layer and a support film adhesive layer, wherein the support film adhesive layer is positioned between the first organic layer and the second organic layer.
9. The display module of claim 8,
the support film adhesive layer comprises conductive adhesive, and the conductive adhesive is reused as the first conductive part.
10. The display module of claim 9,
the support film glue layers are distributed in a grid shape in the plane of the support film.
11. The display module of claim 9,
at least part of the support film glue layer is exposed on the surface of the support film.
12. The display module of claim 2,
the second conductive part comprises conductive adhesive.
13. The display module of claim 2,
the foam comprises an opening, the shortest distance between the opening and the edge is greater than 0 along the direction parallel to the plane of the display panel, and the second conductive part is located in the opening.
14. The display module of claim 1,
the shortest distance between the edge of the foaming layer and the edge of the grounding part is greater than 0.
15. A display device characterized by comprising the display panel according to any one of claims 1 to 14.
16. The display device according to claim 15,
the display panel is provided with a through hole;
the display device further comprises a light sensor, and the orthographic projection of the light sensor on the plane where the display panel is located in the through hole.
CN202111241884.6A 2021-10-25 2021-10-25 Display module and display device Active CN113963632B (en)

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Citations (6)

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Publication number Priority date Publication date Assignee Title
CN112415794A (en) * 2019-08-21 2021-02-26 群创光电股份有限公司 Display device
CN112909069A (en) * 2021-03-26 2021-06-04 武汉天马微电子有限公司 Display module and display device
CN213694255U (en) * 2020-11-30 2021-07-13 云谷（固安）科技有限公司 Support film of display panel, display panel and display device
CN113130610A (en) * 2021-04-12 2021-07-16 京东方科技集团股份有限公司 Display module and display device
CN113362724A (en) * 2021-06-29 2021-09-07 京东方科技集团股份有限公司 Display module and display device
CN113362723A (en) * 2021-06-29 2021-09-07 京东方科技集团股份有限公司 Display module and display device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112415794A (en) * 2019-08-21 2021-02-26 群创光电股份有限公司 Display device
CN213694255U (en) * 2020-11-30 2021-07-13 云谷（固安）科技有限公司 Support film of display panel, display panel and display device
CN112909069A (en) * 2021-03-26 2021-06-04 武汉天马微电子有限公司 Display module and display device
CN113130610A (en) * 2021-04-12 2021-07-16 京东方科技集团股份有限公司 Display module and display device
CN113362724A (en) * 2021-06-29 2021-09-07 京东方科技集团股份有限公司 Display module and display device
CN113362723A (en) * 2021-06-29 2021-09-07 京东方科技集团股份有限公司 Display module and display device

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