Cover plate, display module and manufacturing method thereof, and display device

Abstract

The application discloses a cover plate, a display module and a manufacturing method thereof, and a display device. The cover plate is used for covering a display screen body layer. The display screen body layer has a display area and a non-display area. Metal traces are arranged in at least part of the non-display area of the display screen body layer. The cover plate comprises an encapsulation layer. The part of the encapsulation layer corresponding to the metal traces is a unidirectional light transmission film layer. The part of the encapsulation layer corresponding to the metal traces in the cover plate is the unidirectional light transmission film layer. In this way, the light reflection phenomenon of the metal traces in the display screen body layer can be effectively avoided without affecting the light emission of the cover plate, so that the display screen body layer can have a better display effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display panels, in particular to a cover plate, a display module and a manufacturing method thereof, and a display device. BACKGROUND

[0002] At present, in the display module product, after the cover plate is attached to the display screen body, the edge ink does not completely shield the lower screen body trace, so that part of the screen body trace will be exposed outside the edge ink, and the reflectivity of the screen body trace under the action of ambient light is greater than the light intensity of the display area of the display screen body, so that it will slightly brighten under the visual observation of specific angle and strong light, that is, the screen body trace has a visible reflection phenomenon under specific light, which affects the visual effect. SUMMARY

[0003] The technical problem solved by the present application is to provide a cover plate, a display module and a manufacturing method thereof, and a display device, to solve the problem that the screen body trace is not covered by the ink after the cover plate of the prior art covers the display screen body, and there is a visible reflection phenomenon, thereby affecting the visual effect.

[0004] To solve the above technical problem, one technical solution adopted by the present application is to provide a cover plate for covering a display screen body layer, the display screen body layer having a display area and a non-display area, and a metal trace being arranged in at least part of the non-display area of the display screen body layer, wherein the cover plate comprises: an encapsulation layer, and the part of the encapsulation layer corresponding to the metal trace is a unidirectional light transmission film layer.

[0005] The part of the encapsulation layer corresponding to the non-display area of the display screen body layer is a unidirectional light transmission film layer.

[0006] The encapsulation layer is a unidirectional light transmission film layer.

[0007] To solve the above technical problem, another technical solution adopted by the present application is to provide a display module, wherein the display module comprises: a display screen body layer having a display area and a non-display area, and a metal trace being arranged in at least part of the non-display area; and a unidirectional light transmission film layer arranged on at least part of the metal trace.

[0008] The display module further comprises a light shielding layer arranged on the edge portion of the non-display area away from the display area, and the unidirectional light transmission film layer is arranged in the same layer as the light shielding layer to cooperatively cover the metal trace and the part of the non-display area of the display screen body layer where no metal trace is arranged.

[0009] The display module further comprises a light shielding layer arranged on the edge portion of the non-display area away from the display area, and the unidirectional light transmission film layer is arranged on the light shielding layer, the metal trace and the part of the non-display area of the display screen body layer where no light shielding layer and metal trace are arranged.

[0010] The display module further comprises a cover plate, and the cover plate is arranged on the unidirectional light transmission film layer and the display screen body layer.

[0011] The unidirectional light transmission film layer is arranged on the cover plate.

[0012] To solve the above technical problems, another technical solution adopted by the present application is to provide a manufacturing method of a display module, wherein the manufacturing method of the display module comprises: providing a display screen body layer; wherein the display screen body layer has a display area and a non-display area, and metal traces are arranged on at least part of the non-display area of the display screen body layer; forming a unidirectional light transmission film layer on at least part of the metal traces; forming a unidirectional light transmission film layer on a part of the area of the cover plate corresponding to at least part of the metal traces; and covering the unidirectional light transmission film layer and the cover plate on the display screen body layer.

[0013] The step of forming a unidirectional light transmission film layer on at least part of the metal traces comprises: forming a unidirectional light transmission film layer on the cover plate corresponding to at least part of the non-display area of the display screen body layer; providing a cover plate, and forming a unidirectional light transmission film layer on a part of the area of the cover plate corresponding to at least part of the metal traces; and covering the unidirectional light transmission film layer and the cover plate on the display screen body layer.

[0014] To solve the above technical problems, another technical solution adopted by the present application is to provide a display device, wherein the display device comprises a housing and a display module connected to each other; and the display module is the display module as described in any one of the above.

[0015] The present application has the following beneficial effects: Different from the prior art, the cover plate provided by the present application is used to cover the display screen body layer, the display screen body layer has a display area and a non-display area, and metal traces are arranged on at least part of the non-display area of the display screen body layer, the encapsulation layer in the cover plate corresponds to part of the metal traces, and is a unidirectional light transmission film layer, so that after the cover plate is covered on the display screen body layer, the reflection light possibly existing in the metal traces of the display screen body layer can be effectively shielded through the unidirectional light transmission film layer in the encapsulation layer without affecting the normal light transmission of the cover plate, so as to ensure that the display screen body layer can have a better display effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor. Among them:

[0017] Figure 1 is a structural schematic diagram of an embodiment of the cover plate of the present application;

[0018] Figure 2is a structural schematic diagram of an embodiment of the display module of the present application;

[0019] Figure 3 is Figure 2 is a sectional schematic diagram of an embodiment of the display module of the present application;

[0020] Figure 4 is Figure 2 is a sectional schematic diagram of another embodiment of the display module of the present application;

[0021] Figure 5 is a flow schematic diagram of a first embodiment of the manufacturing method of the display module of the present application;

[0022] Figure 6 is Figure 5 is a flow schematic diagram of a specific embodiment of S32;

[0023] Figure 7 is a flow schematic diagram of a second embodiment of the manufacturing method of the display module of the present application;

[0024] Figure 8 is a structural schematic diagram of an embodiment of the display device of the present application. DETAILED DESCRIPTION

[0025] The present application will be further described below in conjunction with the drawings and embodiments. It is particularly pointed out that the following embodiments are only for illustrating the present application, but not for limiting the scope of the present application. Similarly, the following embodiments are only part of the embodiments of the present application, but not all the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0026] The terms “first”, “second”, “third” in the present application are only for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first”, “second”, “third” can explicitly or implicitly include at least one of the features. The meaning of “multiple” in the description of the present application is at least two, such as two, three, etc., unless otherwise specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only for explaining the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms “include” and “have” and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0027] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in

[0028] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in Figure 1 , Figure 1 is a structural schematic diagram of an embodiment of the cover plate. In the embodiment, the cover plate 10 comprises an encapsulation layer 11.

[0029] The cover plate 10 is specifically used for covering a display screen body layer (not shown in the figure) to provide protection for the display screen body layer without affecting the image display of the display screen body layer. The display screen body layer has a display area and a non-display area, and metal traces are further provided in at least part of the non-display area of the display screen body layer to provide a signal transmission path for light emitting units in the display screen body layer.

[0030] It can be understood that the cover plate 10 can be manufactured separately to cover the flexible display screen or directly formed on the corresponding display screen body layer.

[0031] Specifically, the encapsulation layer 11 in the cover plate 10 is specifically used for being arranged on the display screen body layer to protect the display screen body layer, and by flattening the side of the encapsulation layer 11 away from the display screen body layer, the unevenness of each spaced light emitting layer in the display screen body layer, such as RGB (Red Green Blue) light emitting layer or RGBW (Red Green Blue White) light emitting layer, facing the side of the encapsulation layer 11 is eliminated, which is not convenient for the realization of product display function.

[0032] For the convenience of understanding, the part of the encapsulation layer 11 in the cover plate 10 used for covering the display area of the display screen body layer is taken as a first encapsulation area 111, the part of the encapsulation layer 11 used for covering the metal traces in the display screen body layer is taken as a second encapsulation area 112, and the part of the encapsulation layer 11 used for covering the part of the non-display area of the display screen body layer which is not provided with metal traces is taken as a third encapsulation area 113, which are taken as examples for description. It can be known that the part of the encapsulation layer 11 corresponding to the metal traces, i.e., the second encapsulation area 112 is specifically a unidirectional light transmission film layer.

[0033] The unidirectional light transmission film layer specifically refers to light that can only transmit from one side of the unidirectional light transmission film layer to the other side, and cannot transmit in the reverse direction, so that when the encapsulation layer 11 is covered on the display screen body layer, the unidirectional light transmission film layer can be correspondingly covered on the metal traces in the display screen body layer, so that the light emitted outward by the display screen body layer can normally transmit out of the unidirectional light transmission film layer, but external light cannot enter the display screen body layer through the unidirectional light transmission film layer.

[0034] It is worth noting that the third encapsulation area 113 of the display screen body layer also specifically corresponds to the metal traces in the actual product, but here the film layer is too many and there is shielding, so the possibility of reflection is small. In order to distinguish from the second encapsulation area 112, it is defined as an encapsulation area without metal traces from the perspective of less reflected light, so as to facilitate explanation. That is, the third encapsulation area 113 specifically refers to a partial area without metal traces with large reflected light.

[0035] The above scheme can effectively shield the reflected light that may exist in the metal traces in the display screen body layer through the unidirectional light transmission film layer in the encapsulation layer 11 without affecting the normal light transmission of the display screen body layer, so as to ensure that the display screen body layer can have a better display effect.

[0036] In an embodiment, the encapsulation layer 11 in the cover plate 10 covers part of the non-display area of the display screen body layer, that is, the second encapsulation area 112 and the third encapsulation area 113 of the encapsulation layer 11 can also be unidirectional light transmission film layers, to facilitate the manufacturing of the encapsulation layer 11.

[0037] In another embodiment, the encapsulation layer 11 can also be a unidirectional light transmission film layer as a whole, that is, the first encapsulation area 111, the second encapsulation area 112 and the third encapsulation area 113 of the encapsulation layer 11 are all unidirectional light transmission film layers, to facilitate the manufacturing of the encapsulation layer 11.

[0038] In an embodiment, the cover plate 10 specifically further includes an adhesive layer (not shown in the figure), which is correspondingly arranged between the display screen body layer and the encapsulation layer 11, to realize the connection between the two.

[0039] Optionally, the adhesive layer can be OCA (Optically Clear Adhesive, optical glue) or any other reasonable material layer, which is not limited in the present application.

[0040] Optionally, the encapsulation layer 11 can be a layer of ultra thin glass (UTG) or any other reasonable glass material, and the portion corresponding to the unidirectional light transmission film layer is processed by any reasonable special process, such as blurring, to have a unidirectional light transmission function, which is not limited in the present application.

[0041] The present application also provides a display module, please refer to Figure 2 and Figure 3 , wherein, Figure 2 is a structural schematic diagram of an embodiment of the display module of the present application, Figure 3 is Figure 2 is a cross-sectional schematic diagram of an embodiment of the display module in . In the embodiment, the display module 20 specifically includes a display screen body layer 21 and a unidirectional light transmission film layer 22.

[0042] The display screen body layer 21 has a display area A region and a non-display area B region, and at least part of the non-display area B region of the display screen body layer 21 is provided with metal traces 211.

[0043] Specifically, the unidirectional light transmission film layer 22 in the display module 20 is specifically arranged on at least part of the metal traces 211.

[0044] Further, in an embodiment, the display module 20 specifically further includes a cover plate 24, and the cover plate 24 is arranged on the unidirectional light transmission film layer 22 and the display screen body layer 21, so that when the display screen body layer 21 displays an image and the light emitted through the unidirectional light transmission film layer 22 and the cover plate 24, the unidirectional light transmission film layer 22 can effectively shield the reflected light that may exist in the metal traces 211 in the display screen body layer 21, so that the metal traces 211 do not appear visible reflected light, so as to ensure that the display screen body layer 21 can have a better display effect.

[0045] In another embodiment, the display module 20 further includes a light shielding layer 23, i.e. encapsulation or ink on the module frame, and the light shielding layer 23 is specifically arranged on the edge portion of the non-display area B region of the display screen body layer 21 away from the display area A region, and is arranged in the same layer as the unidirectional light transmission film layer 22, so as to cooperate with each other and cover the metal traces 211 in the display screen body layer 21 and the part of the non-display area B region of the display screen body layer 21 which is not provided with the metal traces 211. In some embodiments, the light shielding layer 23 and the unidirectional light transmission film layer 22 can cooperate to cover the entire non-display area B region of the display screen body layer 21.

[0046] It can be understood that the light shielding layer 23 can also have a portion covering the metal trace, so as to shield the reflected light of the metal trace 211 in the display screen body layer 21, like the unidirectional light transmission film layer 22. Therefore, after the light shielding layer 23 and the unidirectional light transmission film layer 22 are jointly arranged on the entire non-display area B of the display screen body layer 21, the phenomenon of visible reflection of the metal trace 211 under specific light can be effectively avoided, and the display effect of the display screen body layer 21 is not affected.

[0047] Optionally, the area of the light shielding layer 23 and the unidirectional light transmission film layer 22 corresponding to the non-display area B of the display screen body layer 21 can be any reasonable distribution ratio. In order not to affect the realization of the narrow frame of the display module 20, the area of the light shielding layer 23 is as small as possible, and the area of the unidirectional light transmission film layer 22 is as large as possible. The present application does not limit this.

[0048] Optionally, the light shielding layer 23 and the unidirectional light transmission film layer 22 are arranged on the cover plate 24.

[0049] Preferably, the unidirectional light transmission film layer 22 is arranged on the cover plate 24.

[0050] Please continue to refer to Figure 4 , Figure 4 is Figure 2 a cross-sectional schematic view of another embodiment of the display module.

[0051] In another embodiment, the display module 20 further comprises a light shielding layer 23, and the light shielding layer 23 is arranged on the edge portion of the non-display area B of the display screen body layer 21 away from the display area A. The unidirectional light transmission film layer 22 is arranged on the light shielding layer 23, the metal trace 211 and the portion of the non-display area B of the display screen body layer 21 which is not provided with the light shielding layer 23 and the metal trace 211. That is, the unidirectional light transmission film layer 22 covers the entire non-display area B of the display screen body layer 21 and is arranged in a stack with the light shielding layer 23, so as to facilitate the realization of the corresponding process.

[0052] The present application also provides a manufacturing method of a display module. Please refer to Figure 5 , Figure 5 is a flowchart of a first embodiment of the manufacturing method of the display module of the present application. Specifically, the method can include the following steps:

[0053] S31: providing a display screen body layer.

[0054] Specifically, the display screen body layer has a display area and a non-display area, and at least a portion of the non-display area of the display screen body layer is further provided with a metal trace.

[0055] S32: forming a unidirectional light transmission film layer on at least a portion of the metal trace.

[0056] Further, the unidirectional light transmission film layer is formed on part of the metal traces, or the unidirectional light transmission film layer is formed on all of the metal traces.

[0057] Please continue to refer to Figure 6 , Figure 6 is Figure 5 a flowchart of a specific embodiment of S32 in the method.

[0058] In the embodiment, S32 can further include the following steps:

[0059] S321: providing a cover plate, and forming a unidirectional light transmission film layer on a partial region of the cover plate corresponding to at least part of the metal traces.

[0060] Specifically, the cover plate is used to cover the display screen body layer, so as to provide protection for the display screen body layer without affecting the image display of the display screen body layer.

[0061] The unidirectional light transmission film layer is formed on a partial region of the cover plate. Specifically, the partial region is a region corresponding to at least part of the metal traces on the display screen body layer.

[0062] S322: covering the unidirectional light transmission film layer and the cover plate on the display screen body layer.

[0063] The unidirectional light transmission film layer and the cover plate are correspondingly covered on the display screen body layer, so as to provide protection for the display screen body layer and make it flat.

[0064] Therefore, when the display screen body layer displays an image and light is emitted through the unidirectional light transmission film layer and the cover plate, the unidirectional light transmission film layer can effectively shield the reflected light that may exist in the metal traces in the display screen body layer, so that the metal traces do not appear reflected light visible to the naked eye, so as to ensure that the display screen body layer can have a better display effect.

[0065] Please refer to Figure 7 , Figure 7 is a flowchart of a second embodiment of the method for manufacturing the display module. The method for manufacturing the display module in the embodiment is a detailed embodiment of the method for manufacturing the display module in Figure 5

[0066] S41: providing a display screen body layer and a cover plate.

[0067] Specifically, the display screen body layer has a display area and a non-display area, and at least part of the non-display area of the display screen body layer is provided with metal traces, and the cover plate is specifically used for the display screen body layer, so as to provide protection for the display screen body layer without affecting the image display of the display screen body layer.

[0068] ​S42: Forming a unidirectional light transmission film layer on the cover plate corresponding to at least part of the non-display area of the display screen body layer.

[0069] Specifically, the unidirectional light transmission film layer is formed on part of the area of the cover plate, and the area specifically corresponds to the area that needs to be covered on the whole or part of the non-display area of the display screen body layer.

[0070] S43: Forming a light shielding layer on the unidirectional light transmission film layer or the edge part of the cover plate corresponding to the non-display area of the display screen body layer away from the display area.

[0071] In other embodiments, the order of forming the light shielding layer and the unidirectional light transmission film layer can also be exchanged.

[0072] Further, when the unidirectional light transmission film layer is specifically formed on part of the area corresponding to the whole non-display area of the display screen body layer of the cover plate, the light shielding layer is formed on the edge part of the unidirectional light transmission film layer corresponding to the non-display area of the display screen body layer away from the display area.

[0073] When the unidirectional light transmission film layer is specifically formed on part of the area corresponding to part of the non-display area of the display screen body layer of the cover plate, the light shielding layer is formed on the edge part of the cover plate corresponding to the non-display area of the display screen body layer away from the display area, and the light shielding layer is specifically the same layer as the unidirectional light transmission film layer and is connected to each other, and collectively corresponds to the whole non-display area of the display screen body layer.

[0074] S44: Covering the light shielding layer, the unidirectional light transmission film layer and the cover plate on the display screen body layer.

[0075] Further, the light shielding layer, the unidirectional light transmission film layer and the cover plate are covered on the display screen body layer, so that the reflection light possibly existing in the metal wiring of the display screen body layer can be shielded by the light shielding layer and the unidirectional light transmission film layer. That is, after the whole non-display area of the display screen body layer is covered by the light shielding layer and the unidirectional light transmission film layer, the reflection phenomenon of the visible metal wiring under specific light can be effectively avoided, and the display effect of the display screen body layer can be affected.

[0076] The application also provides a display device, please refer to Figure 8 , Figure 8 is a structural schematic diagram of an embodiment of the display device of the application. Wherein, the display device 50 comprises a housing 52 and a display module 51 connected.

[0077] Wherein, the display module 51 described in the embodiment is the display module 20 described in any one of the above embodiments, which will not be described here.

[0078] Different from the prior art, the cover plate is used for covering the display screen body layer, the display screen body layer has a display area and a non-display area, and metal traces are arranged in at least part of the non-display area of the display screen body layer. The encapsulation layer in the cover plate is a one-way light transmission film layer corresponding to the part of the metal traces, so that after the cover plate is covered on the display screen body layer, the reflection light possibly existing in the metal traces of the display screen body layer can be effectively shielded through the one-way light transmission film layer in the encapsulation layer without affecting the normal light transmission of the cover plate, so that the display screen body layer can have a better display effect.

[0079] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A display module, characterized by The display module comprises: a display screen body layer having a display area and a non-display area, at least part of the non-display area being provided with metal traces; a cover plate covering the display screen body layer, the cover plate comprising an encapsulation layer, wherein a unidirectional light transmission film layer is formed on the encapsulation layer by a virtualization process, so that the encapsulation layer in the display area and the non-display area is a unidirectional light transmission film layer, the unidirectional light transmission film layer being configured to allow light emitted outwardly by the display screen body layer to normally transmit out of the unidirectional light transmission film layer, but external light being unable to pass through the unidirectional light transmission film layer into the display screen body layer.

2. The display module according to claim 1, wherein the display module further comprises a light shielding layer, the light shielding layer being arranged on an edge portion of the non-display area away from the display area and being arranged in the same layer as the unidirectional light transmission film layer, so as to cooperatively cover the metal traces and the part of the non-display area of the display screen body layer on which the metal traces are not arranged.

3. The display module according to claim 1, wherein the display module further comprises a light shielding layer, the light shielding layer being arranged on an edge portion of the non-display area away from the display area, and the unidirectional light transmission film layer covering the light shielding layer, the metal traces and the part of the non-display area of the display screen body layer on which the light shielding layer and the metal traces are not arranged.

4. A manufacturing method of a display module, characterized by, The manufacturing method of the display module comprises: providing a display screen body layer, wherein the display screen body layer has a display area and a non-display area, and metal traces are arranged on at least part of the non-display area of the display screen body layer; forming a unidirectional light transmission film layer on the display screen body layer in the display area and the non-display area; the step of forming the unidirectional light transmission film layer on the display screen body layer in the display area and the non-display area comprises: providing a cover plate, and forming the unidirectional light transmission film layer on the cover plate corresponding to the display area and the non-display area of the display screen body layer; wherein the cover plate comprises an encapsulation layer, and the unidirectional light transmission film layer is formed on the encapsulation layer by a virtualization process, so that the encapsulation layer in the display area and the non-display area is a unidirectional light transmission film layer; covering the unidirectional light transmission film layer and the cover plate on the display screen body layer, wherein the unidirectional light transmission film layer is configured to allow light emitted outwardly by the display screen body layer to normally transmit out of the unidirectional light transmission film layer, but external light being unable to pass through the unidirectional light transmission film layer into the display screen body layer.

5. A display device, characterized by comprising: The display device comprises a housing and a display module connected to each other; wherein the display module is the display module according to any one of claims 1-3.

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