Display module and display device

Abstract

The utility model discloses a display module and a display device. The display module comprises a display panel, a printed circuit board and a shielding adhesive tape, the printed circuit board is located on the backlight side of the display panel; the shielding adhesive tape is located between the printed circuit board and the display panel; the shielding adhesive tape comprises a first protection layer, a shielding layer, a second protection layer and a conductive layer, and the first protection layer is located on one side of the printed circuit board; the shielding layer is positioned on one side, far away from the printed circuit board, of the first protection layer; the second protection layer is positioned on one side, far away from the first protection layer, of the shielding layer; the conductive layer is located on the side, away from the first protection layer, of the shielding layer, and the conductive layer and the second protection layer are arranged in a stacked mode; and the shielding layer and the conductive layer are electrically connected with the same grounding end. According to the display module and the display device provided by the utility model, the electrostatic protection capability of the display module can be improved.

Description

Technical Field

[0001] The utility model relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] With the continuous development of display technology, consumers' requirements for the display effects of display devices are also constantly increasing.

[0003] Electrostatic Discharge (ESD) refers to the charge transfer caused by objects with different electrostatic potentials approaching or directly contacting each other. During the use of display modules, ESD may occur in various ways. ESD may damage the display module, resulting in abnormal display effects. Therefore, the anti-ESD capability of the display module is one of the important criteria for judging the quality of the display module. Utility Model Content

[0004] The utility model provides a display module and a display device, which can improve the electrostatic protection capability of the display module.

[0005] According to one aspect of the utility model, a display module is provided, the display module comprising: a display panel, a printed circuit board and a shielding tape;

[0006] The printed circuit board is located on the backlight side of the display panel;

[0007] The shielding tape is located between the printed circuit board and the display panel;

[0008] The shielding tape comprises a first protective layer, a shielding layer, a second protective layer and a conductive layer, wherein the first protective layer is located on one side of the printed circuit board; the shielding layer is located on a side of the first protective layer away from the printed circuit board; the second protective layer is located on a side of the shielding layer away from the first protective layer; the conductive layer is located on a side of the shielding layer away from the first protective layer, and the conductive layer and the second protective layer are stacked;

[0009] The shielding layer and the conductive layer are electrically connected to the same ground terminal.

[0010] Optionally, the conductive layer is located on a side of the shielding layer away from the first protective layer;

[0011] The second protection layer is located on a side of the conductive layer away from the shielding layer.

[0012] Optionally, the shielding tape further includes a third protective layer;

[0013] The second protective layer is located on a side of the shielding layer away from the first protective layer;

[0014] The conductive layer is located on a side of the second protective layer away from the shielding layer;

[0015] The third protection layer is located on a side of the conductive layer away from the second protection layer.

[0016] Optionally, the conductive layer is distributed in a grid shape.

[0017] Optionally, the shielding layer includes a metal layer and an absorbing material layer;

[0018] The metal layer and the wave absorbing material layer are stacked.

[0019] Optionally, a vertical projection of the conductive layer on the first protective layer coincides with a vertical projection of the shielding layer on the first protective layer.

[0020] Optionally, the metal layer is distributed in a grid shape.

[0021] Optionally, the shielding tape wraps the printed circuit board.

[0022] Optionally, the display module provided in this embodiment further includes a driving chip;

[0023] The shielding tape wraps the driving chip.

[0024] According to another aspect of the present invention, a display device is provided. The display device includes the display module provided by an embodiment of the present invention.

[0025] The present embodiment provides a display module, which includes a display panel, a printed circuit board and a shielding tape, wherein the shielding tape includes a first protective layer, a shielding layer, a conductive layer and a second protective layer, wherein the shielding layer is located between the first protective layer and the second protective layer, and the conductive layer can be located between the first protective layer and the second protective layer, or can be located on the side of the second protective layer away from the shielding layer. The conductive layer and the shielding layer can quickly release static electricity in the display module, thereby improving the electrostatic protection capability of the display module. In summary, the display module provided in the present embodiment can improve the electrostatic protection capability of the display module.

[0026] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a structural schematic diagram of a display module provided according to an embodiment of the utility model;

[0029] Figure 2 is a structural schematic diagram of another display module provided according to an embodiment of the utility model;

[0030] Figure 3 is a structural schematic diagram of another display module provided according to an embodiment of the utility model;

[0031] Figure 4 It is a structural schematic diagram of another display module provided according to an embodiment of the utility model. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] Figure 1 is a structural schematic diagram of a display module provided according to an embodiment of the utility model, Figure 2 is a schematic diagram of the structure of another display module provided according to an embodiment of the utility model, referring to Figure 1 and Figure 2 The display module provided in this embodiment includes: a display panel 100, a printed circuit board 110 and a shielding tape 120; the printed circuit board 110 is located on the backlight side of the display panel 100; the shielding tape 120 is located between the printed circuit board 110 and the display panel 100; the shielding tape 120 includes a first protective layer 121, a shielding layer 122, a conductive layer 123 and a second protective layer 124, wherein the first protective layer 121 is located on one side of the printed circuit board 110; the shielding layer 122 is located on the side of the first protective layer 121 away from the printed circuit board 110; the conductive layer 123 is located on the side of the shielding layer 122 away from the first protective layer 121, and the second protective layer 124 is located on the side of the shielding layer 122 away from the first protective layer 121; the conductive layer 123 and the second protective layer 124 are stacked; the shielding layer 122 and the conductive layer 123 are electrically connected to the same ground terminal.

[0035] Specifically, the backlight side of the display panel 100 is the side away from the light emitting side of the display panel 100. Figure 1 and Figure 2 The middle arrow points to the light emitting direction of the display panel 100. Figure 1 and Figure 2 The arrow in is located at the light exiting side of the display panel 100. The display panel 100 includes a display area and a non-display area, and the vertical projection of the shielding tape 120 on the display panel 100 may be located in the display area of ​​the display panel 100.

[0036] The conductive layer 123 may be a copper foil with a certain thickness, or a copper layer with a grid structure, that is, the vertical projection of the conductive layer 123 on the first protective layer 121 is in a grid shape. The printed circuit board 110 (PCB, Printed Circuit Board, also known as a printed circuit board) is a provider of electrical connections for electronic components. The printed circuit board may include a substrate and electronic components, drive circuits, etc. integrated on the substrate.

[0037] The size of the shielding layer 122 may be the same as that of the conductive layer 123, and the size of the conductive layer 123 may be slightly smaller than that of the shielding layer 122. The shielding layer 122 also has the function of transmitting electrical signals.

[0038] The shielding layer 122 and the conductive layer 123 are electrically connected to the ground terminal, so that the static electricity in the display module can be conducted to the ground terminal through the shielding layer 122 and the conductive layer 123, thereby releasing the static electricity in the display module and preventing the static electricity from entering the display panel 100 and affecting the display effect of the display panel 100. The shielding layer 122 and the conductive layer 123 release static electricity together, which can improve the static electricity release capability of the display module, thereby improving the static electricity protection capability of the display module.

[0039] The printed circuit board 110, the shielding layer 122, and the conductive layer 123 may be electrically connected to the same ground terminal. Specifically, a grounded exposed copper area may be provided on the printed circuit board 110, and the shielding layer 122 and the conductive layer 123 may be electrically connected to the grounded exposed copper area on the printed circuit board 110, thereby eliminating the need to provide an additional ground terminal for the display module, thereby reducing the area of ​​the display module.

[0040] The shielding layer 122 has the function of resisting electromagnetic interference and releasing static electricity. The first protective layer 121 and the second protective layer 124 can both be used to protect the shielding layer 122 from damage by external forces, and the material of the second protective layer 124 can be an insulating material. The second protective layer 124 can be made of PET film (polyester film). The material of the portion of the first protective layer 121 that contacts the exposed copper area of ​​the printed circuit board 110 can be metal, and the material of the other portion can be an insulating material. Figure 1 , the conductive layer 123 may be located between the first protective layer 121 and the second protective layer 124, referring to Figure 2 The conductive layer 123 may also be located on a side of the second protective layer 124 away from the shielding layer 122. The conductive layer 123 may better release static electricity in the display module and improve the static electricity protection capability of the display module.

[0041] The present embodiment provides a display module, which includes a display panel, a printed circuit board and a shielding tape, wherein the shielding tape includes a first protective layer, a shielding layer, a conductive layer and a second protective layer, wherein the shielding layer is located between the first protective layer and the second protective layer, and the conductive layer can be located between the first protective layer and the second protective layer, or can be located on the side of the second protective layer away from the shielding layer. The conductive layer and the shielding layer can quickly release static electricity in the display module, thereby improving the electrostatic protection capability of the display module. In summary, the display module provided in the present embodiment can improve the electrostatic protection capability of the display module.

[0042] Optional, continue to refer to Figure 1 The conductive layer 123 is located on the side of the shielding layer 122 away from the first protective layer 121; the second protective layer 124 is located on the side of the conductive layer 123 away from the shielding layer 122. This arrangement allows the second protective layer 124 to protect the shielding layer 122 from damage by external forces while also protecting the conductive layer 123 from damage by external forces, thereby increasing the service life of the conductive layer 123.

[0043] Optional, Figure 3 is a schematic diagram of the structure of another display module provided according to an embodiment of the utility model, referring to Figure 3The shielding tape 120 also includes a third protective layer 125; the second protective layer 124 is located on the side of the shielding layer 122 away from the first protective layer 121; the conductive layer 123 is located on the side of the second protective layer 124 away from the shielding layer 122; the third protective layer 125 is located on the side of the conductive layer 123 away from the second protective layer 124.

[0044] Specifically, the material of the third protective layer 125 may be an insulating material, and the material of the third protective layer 125 may be the same as that of the second protective layer 124. The third protective layer 125 may protect the conductive layer 123 from being damaged by external forces, thereby increasing the service life of the conductive layer 123.

[0045] Optionally, the conductive layer is distributed in a grid shape.

[0046] Specifically, the vertical projection of the conductive layer on the first protective layer is in a grid shape. This arrangement can improve the electrostatic discharge capability of the shielding tape, thereby improving the electrostatic protection capability of the display module.

[0047] Figure 4 is a schematic diagram of the structure of another display module provided according to an embodiment of the utility model, referring to Figure 4 The shielding layer 122 includes a metal layer 1221 and an absorbing material layer 1222 ; the metal layer 1221 and the absorbing material layer 1222 are stacked.

[0048] Specifically, the metal layer 1221 can release static electricity, and the material of the metal layer 1221 can be copper, and the metal layer 1221 can be copper foil, or a copper layer with a mesh structure. The wave absorbing material layer 1222 has the function of resisting electromagnetic interference.

[0049] Optionally, the vertical projection of the conductive layer 123 on the first protective layer 121 coincides with the vertical projection of the shielding layer 122 on the first protective layer 121 . This arrangement can better improve the electrostatic protection capability of the shielding tape 120 , thereby improving the electrostatic protection capability of the display module.

[0050] Optionally, the metal layer is distributed in a grid shape, which can improve the electrostatic discharge capability of the metal layer, thereby improving the electrostatic protection capability of the display module.

[0051] Optionally, the shielding tape is wrapped around the printed circuit board. This arrangement can improve the electrostatic protection capability of the printed circuit board, thereby improving the electrostatic protection capability of the display module.

[0052] Optionally, the display module provided in this embodiment further includes a driver chip; the shielding tape is wrapped around the driver chip, and such a configuration can improve the electrostatic protection capability of the driver chip, thereby improving the electrostatic protection capability of the display module.

[0053] This embodiment also provides a display device, which includes the display module provided by any embodiment of the utility model.

[0054] Specifically, the display device provided in this embodiment can be a device with display function such as a computer, a mobile phone, a television, a smart watch, a laptop computer, an iPad, etc. The display device can be a liquid crystal display device or an organic light emitting display device.

[0055] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0056] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A display module, characterized in that: include: Display panels, printed circuit boards, and shielding tapes; The printed circuit board is located on the backlight side of the display panel; The shielding tape is located between the printed circuit board and the display panel; The shielding tape comprises a first protective layer, a shielding layer, a second protective layer and a conductive layer, wherein the first protective layer is located on one side of the printed circuit board; the shielding layer is located on a side of the first protective layer away from the printed circuit board; the second protective layer is located on a side of the shielding layer away from the first protective layer; the conductive layer is located on a side of the shielding layer away from the first protective layer, and the conductive layer and the second protective layer are stacked; The shielding layer and the conductive layer are electrically connected to the same ground terminal.

2. The display module according to claim 1, characterized in that: The conductive layer is located on a side of the shielding layer away from the first protective layer; The second protection layer is located on a side of the conductive layer away from the shielding layer.

3. The display module according to claim 1, characterized in that: The shielding tape also includes a third protective layer; The second protective layer is located on a side of the shielding layer away from the first protective layer; The conductive layer is located on a side of the second protective layer away from the shielding layer; The third protection layer is located on a side of the conductive layer away from the second protection layer.

4. The display module according to any one of claims 1 to 3, characterized in that: The conductive layer is distributed in a grid shape.

5. The display module according to claim 1, characterized in that: The shielding layer comprises a metal layer and a wave absorbing material layer; The metal layer and the wave absorbing material layer are stacked.

6. The display module according to claim 1, characterized in that: A vertical projection of the conductive layer on the first protective layer coincides with a vertical projection of the shielding layer on the first protective layer.

7. The display module according to claim 5, characterized in that: The metal layer is distributed in a grid shape.

8. The display module according to claim 1, characterized in that: The shielding tape wraps the printed circuit board.

9. The display module according to claim 1, characterized in that: Also includes driver chip; The shielding tape wraps the driving chip.

10. A display device, characterized in that: A display module comprising any one of claims 1 to 9.

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