CN220543551U

CN220543551U - Anti-interference OLED display module

Info

Publication number: CN220543551U
Application number: CN202322267463.1U
Authority: CN
Inventors: 李焕; 刘宏俊; 吴磊
Original assignee: Suzhou Qingyue Optoelectronics Technology Co Ltd
Current assignee: Suzhou Qingyue Optoelectronics Technology Co Ltd
Priority date: 2023-08-23
Filing date: 2023-08-23
Publication date: 2024-02-27
Anticipated expiration: 2033-08-23

Abstract

The utility model relates to an anti-interference OLED display module, which comprises: an OLED display main body; one end of the FPC is electrically connected with the OLED display main body, the other end of the FPC is electrically connected with an external system driving board, and a ground wire is arranged in the FPC; and the shielding film is attached to the outer side surfaces of the OLED display main body and the FPC, a display window is arranged in a display area corresponding to the OLED display main body, and a metal shielding layer in the shielding film is connected with a ground wire in the FPC through a wire. The utility model discloses an improvement of the whole interference killing feature of OLED display module assembly can be realized to this application, in addition, the shielding film links to each other with the ground wire in the FPC, just can accomplish the ground connection of shielding film after the external system drive plate of FPC accomplishes the ground connection, need not to carry out extra ground connection and handle, the setting of being convenient for can effectively reduce the setting degree of difficulty and the setting cost of interference killing feature.

Description

Anti-interference OLED display module

Technical Field

The utility model relates to the technical field of display equipment, in particular to an anti-interference OLED display module.

Background

An OLED (Organic Light-emission diode) is a current-type Organic Light-emitting device, and its basic structure is composed of a glass substrate, an ITO electrode, an Organic Light-emitting material, a metal cathode layer, a package cover, a driver IC, an FPC (flexible circuit board), and other auxiliary materials. The OLED module is a display device, and the display device is generally subjected to some external signal interference, such as EMC and ESD, during the communication process.

The FPC is used as a main component of a communication signal, and an electromagnetic shielding film is added on the surface of the FPC to improve the anti-interference capability, but the existing FPC design cannot perform anti-interference shielding on a display screen body, and the display screen body is generally shielded through other ways, such as adding a layer of conductive cloth, copper foil and the like on the back of the display screen body, and then is connected with external GND through bonding on a conductive material. However, since the shielding part of the display screen body needs to be grounded through a casing or the like, the shielding effect of the shielding part of the display screen body cannot be realized for the display module unit in the mode.

Disclosure of Invention

The utility model aims to provide an anti-interference OLED display module, which has good shielding performance, is suitable for interference shielding of a single screen body of the display module, and improves the overall anti-interference capability of the OLED display module.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an anti-interference OLED display module, which comprises:

an OLED display main body;

one end of the FPC is electrically connected with the OLED display main body, the other end of the FPC is electrically connected with an external system driving board, and a ground wire is arranged in the FPC;

and the shielding film is attached to the outer side surfaces of the OLED display main body and the FPC, a display window is arranged in a display area corresponding to the OLED display main body, and a metal shielding layer in the shielding film is connected with a ground wire in the FPC through a wire.

According to one embodiment of the application, the shielding film comprises an insulating layer, a metal shielding layer and a protective layer, wherein the insulating layer is arranged on the outer side of the OLED display main body and the outer side of the FPC, the metal shielding layer is located on one side away from the insulating layer, and the protective layer is located on the outer side of the metal shielding layer and on one side away from the insulating layer.

According to one embodiment of the present application, at least one window is opened on the surface of the protective layer, and the metal shielding layer below the protective layer is exposed at the position of the window.

According to one embodiment of the application, the windows are respectively formed in the front face and the back face of the OLED display main body and the front face and the back face of the FPC.

According to one embodiment of the application, the edges of the window leave a protective layer of at least 0.5 mm.

According to one embodiment of the present application, the exposed surface of the metal shielding layer is provided with an oxidation-resistant layer, which is located at a side remote from the insulating layer.

According to one embodiment of the application, the FPC is rectangular sheet-shaped and comprises a carrier film, a signal wire arranged on the carrier film and a ground wire, one end of the signal wire is electrically connected with the OLED display main body, the other end of the signal wire is electrically connected with an external system driving plate, and the ground wire is connected with a GND end in the system driving plate.

According to one embodiment of the application, the OLED display main body comprises a substrate, an ITO anode layer, an organic light-emitting layer and a metal cathode layer are sequentially deposited on the back of the substrate from bottom to top, a packaging cover is sleeved and fixed on the outer side of the metal cathode layer, a driving IC is further arranged on the substrate, and one end of the FPC is fixed on the substrate and electrically connected with the driving IC.

According to one embodiment of the present application, the shielding film is coated on the outer sides of the package cover and the driving IC, and the shielding film is coated on the non-display area of the front surface of the substrate.

According to one embodiment of the present application, the front surface of the substrate is provided with a polarizing layer, and the shielding film and the non-display area wrapping the front surface of the polarizing layer.

Compared with the prior art, the utility model has the advantages that:

the utility model provides an anti-interference OLED display module assembly, it is through the whole parcel FPC of shielding film and OLED display main part, the external terminal department of the signal line of display area and FPC with OLED display main part exposes, reduce the side and receive the risk of interference, realize whole interference killing feature's improvement, in addition, the shielding film links to each other with the ground wire in the FPC, just can accomplish the ground connection of shielding film after the external system drive plate of FPC accomplishes the ground connection, need not to carry out extra ground connection and handle, be convenient for set up, can effectively reduce the setting degree of difficulty and the setting cost of anti-interference structure.

Further, through windowing on the protective layer at the outermost side of the shielding film and exposing the metal shielding layer at the lower layer, the exposure of the metal shielding layer can replace conductive cloth, copper foil and the like which play a shielding role in the traditional OLED display main body, so that the whole anti-interference arrangement is facilitated.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:

fig. 1 is a schematic view of an anti-interference OLED display module in an unfolded state according to an embodiment of the present utility model;

fig. 2 is a schematic front view of an assembled state of an anti-interference OLED display module according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a back view structure of an anti-interference OLED display module in an assembled state according to an embodiment of the present utility model;

FIG. 4 is a schematic front view of an assembled OLED display module according to another embodiment of the present utility model;

FIG. 5 is a schematic diagram of a back view structure of an anti-interference OLED display module in an assembled state according to another embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of an anti-interference OLED display module according to another embodiment of the present utility model;

fig. 7 is a schematic cross-sectional structure of a shielding film in an anti-interference OLED display module according to another embodiment of the present utility model.

The reference numerals are explained as follows:

1. the OLED display comprises an OLED display main body 11, a substrate 12, an ITO anode layer 13, an organic light-emitting layer 14, a metal cathode layer 15, a packaging cover 16, a polarizing layer 17, a driving IC 18 and a display area;

2. FPC,21, carrier film, 22, signal line, 23, ground line;

3. a shielding film 31, a front shielding film 32, a back shielding film 33, a display window 34 and a bending area;

4. a wire connecting the shielding film and the ground wire;

51. insulating layer, 52, metal shielding layer, 53, protective layer.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In addition, in the drawings, the length, width, and size of regions thereof may be exaggerated for clarity.

The present embodiment describes an anti-interference OLED display module, as shown in fig. 1 to 3, which includes:

an OLED display main body 1;

an FPC2, one end of the FPC2 being electrically connected to the OLED display body 1, the other end being electrically connected to an external system driving board, and a ground 23 being provided in the FPC 2;

and a shielding film 3 attached to the outer side surfaces of the OLED display body 1 and the FPC2, wherein a display window 33 is formed in the display area 18 corresponding to the OLED display body 1, and a metal shielding layer 52 in the shielding film 3 is connected with a ground wire 23 in the FPC2 through a wire 4.

As shown in fig. 6, the OLED display body 1 may generally include a substrate 11, an ITO anode layer 12, an organic light emitting layer 13, a metal cathode layer 14, and the like, specifically, the ITO anode layer 12, the organic light emitting layer 13, and the metal cathode layer 14 are sequentially deposited on the back surface of the substrate 11 from bottom to top, a package cover 15 is sleeved and fixed on the outer side of the metal cathode layer 14, a driving IC17 is further disposed on the substrate 11, and one end of the FPC2 is fixed on the substrate 11 and electrically connected with the driving IC 17. In the present embodiment, for the sake of clarity, the description of the azimuth expressions such as "front side", "back side", etc., is to be made with the side of the display area 18 of the OLED display main body 1 being the front side, and the opposite side, that is, the side of the package cover 15 being the back side.

The FPC2 is rectangular and sheet-shaped, and comprises a carrier film 21, a signal line 22 arranged on one surface of the carrier film 21, and a ground line 23, wherein the signal line 22 and the ground line 23 can be arranged on the same side or different sides of the carrier film 21 according to user requirements. One end of the signal line 22 is electrically connected with the OLED display main body 1, and the other end of the signal line 22 is electrically connected with an external system driving plate; one end of the ground wire 23 is connected with the OLED display body 1 and is used for providing a grounding function, and the other end of the ground wire 23 is connected with the GND terminal in the system driving board.

The shielding film 3 is a metal shielding layer 52 made of an internal conductive metal such as copper, aluminum, iron, or an alloy thereof, and is used for isolating and shielding an external signal, thereby playing an anti-interference role, and in this embodiment, copper is used as a material of the metal shielding layer 52. Specifically, as shown in fig. 7, the shielding film 3 includes an insulating layer 51, a metal shielding layer 52, and a protective layer 53, the insulating layer 51 being disposed outside the OLED display body 1 and the FPC2, the metal shielding layer 52 being located at a side away from the insulating layer 51, and the protective layer 53 being located outside the metal shielding layer 52 and at a side away from the insulating layer 51.

The shielding film 3 is integrally wrapped on the FPC2 and the OLED display main body 1, the shielding film 3 is wrapped on the outer sides of the packaging cover 15 and the driving IC17, the shielding film 3 is wrapped on the front side and the back side of the FPC2 and the OLED display main body 1, wrapping sealing can be achieved through the side face, the shielding film 3 is located in a front side of the OLED display main body 1, a display window 33 is formed in the front side of the substrate 11, the wrapping is in a non-display area of the front side of the substrate 11, the display area 18 of the OLED display main body 1 and the external terminals of the signal wires 22 of the FPC2 are exposed, the risk that the side edges are interfered is reduced, the integral anti-interference capacity is improved, in addition, the shielding film 3 is connected with the ground wire 23 in the FPC2, after the grounding of the FPC2 is completed, the grounding of the shielding film 3 is not required, the setting difficulty and the setting cost of the anti-interference structure can be effectively reduced.

In the present embodiment, the front surface shielding film 31 and the rear surface shielding film 32 are included. The front shielding film 31 is attached to the front sides of the FPC2 and the OLED display body 1, and the display window 33 is opened on the surface of the front shielding film 31, where the display window 33 is disposed corresponding to the display area 18 of the OLED display body 1. The back shielding film 32 is attached to the backs of the FPC2 and the OLED display main body 1, the main body shape is adapted to the shapes of the outer edges of the FPC2 and the OLED display main body 1, bending areas 34 are formed at the left, right and upper portions of the edges, and the bending areas 34 are attached to the side surfaces of the OLED display main body 1 after being folded, so that shielding protection of the OLED display main body 1 in the side surface direction is realized.

In addition, a polarizing layer 16 is further disposed in a part of the OLED display module, the polarizing layer 16 is disposed on the front surface of the substrate 11, and the shielding film 3 and the non-display area coated on the front surface of the polarizing layer 16.

In order to further improve the shielding effect on the OLED display body 1, the surface, which is not in contact with the OLED display body 1, of the shielding film 3 coated on the outer side of the OLED display body 1, that is, the exposed copper (metal shielding layer 52) is windowed on the outer side, and the exposed copper can capture external interference signals and direct the external interference signals to the ground through the ground wire 23 connected with the external interference signals, so that interference is eliminated.

Specifically, at least one window is opened on the surface of the protective layer 53, that is, the window is opened to a depth equal to the thickness of the protective layer 53, so that the metal shielding layer 52 under the protective layer 53 is exposed at the position of the window.

In an embodiment, as shown in fig. 4 and 5, the windows are respectively opened on the front and back sides of the OLED display body 1 and the FPC 2. The exposure of the metal shielding layer 52 can replace conductive cloth, copper foil and the like which play a shielding role in the traditional OLED display main body, and can play a role in eliminating interference on the front and back surfaces of the OLED display main body 1 and the front and back surfaces of the FPC2, so that a good shielding effect is achieved.

The exposed metal shielding layer 52 is provided with an oxidation-resistant layer located on a side remote from the insulating layer 51. The oxidation-resistant layer can effectively protect the exposed metal shielding layer 52, prevent oxidation damage in the subsequent use process, and ensure normal and stable operation of the OLED display module.

The window may be arranged so that the edge of the window may be directly extended to the edges of the front and back surfaces of the OLED display body 1 and the FPC2, that is, the window may not be opened to the edge, and at least 0.5mm of protection layer 53 may be left on the edge, and the protection layer 53 may play a role in restraining and protecting the edge of the shielding film 3. Of course, if the window is opened to the edge, that is, the window is opened to the edge of the OLED display body 1, FPC2, the metal shielding layers 52 on the front and back sides of the OLED display body 1, FPC2 may be completely exposed.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. An anti-interference OLED display module, comprising:

an OLED display main body;

2. The anti-interference OLED display module set forth in claim 1, wherein the shielding film includes an insulating layer, a metal shielding layer and a protective layer, the insulating layer is disposed on the outer sides of the OLED display body and the FPC, the metal shielding layer is located on a side away from the insulating layer, and the protective layer is located on the outer side of the metal shielding layer and on a side away from the insulating layer.

3. The anti-interference OLED display module set forth in claim 2, wherein at least one window is opened on the surface of the protective layer, and the metal shielding layer under the protective layer is exposed at the position of the window.

4. The anti-interference OLED display module set according to claim 3, wherein the windows are respectively arranged on the front surface and the back surface of the OLED display main body and the front surface and the back surface of the FPC.

5. The anti-interference OLED display module claimed in claim 4, wherein the edges of the window leave a protective layer of at least 0.5 mm.

6. The anti-interference OLED display module claimed in any one of claims 3-5, wherein the exposed surface of the metal shielding layer is provided with an anti-oxidation layer, the anti-oxidation layer being located on a side remote from the insulating layer.

7. The anti-interference OLED display module set claimed in claim 1, wherein the FPC is in a rectangular sheet shape, and includes a carrier film, a signal line disposed on the carrier film, and the ground line, one end of the signal line is electrically connected to the OLED display main body, the other end is electrically connected to an external system driving board, and the ground line is connected to a GND terminal in the system driving board.

8. The anti-interference OLED display module set according to claim 1, wherein the OLED display main body comprises a substrate, an ITO anode layer, an organic light-emitting layer and a metal cathode layer are sequentially deposited on the back surface of the substrate from bottom to top, a packaging cover is sleeved and fixed on the outer side of the metal cathode layer, a driving IC is further arranged on the substrate, and one end of the FPC is fixed on the substrate and electrically connected with the driving IC.

9. The anti-interference OLED display module set of claim 8, wherein the shielding film is coated on the outer sides of the package cover and the driving IC, and the shielding film is coated on the non-display area of the front surface of the substrate.

10. The anti-interference OLED display module set according to claim 9, wherein a polarizing layer is arranged on the front face of the substrate, and the shielding film and a non-display area wrapping the front face of the polarizing layer.