CN114038891B

CN114038891B - OLED display module and OLED display device

Info

Publication number: CN114038891B
Application number: CN202111352014.6A
Authority: CN
Inventors: 占栋
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2023-04-07
Anticipated expiration: 2041-11-16
Also published as: CN114038891A

Abstract

The application provides an OLED display module assembly and OLED display device, this OLED display module assembly is through setting up the cotton layer of bubble into the cotton part of first bubble and second bubble, make the cotton part setting of first bubble at the plane display area, the cotton part setting of second bubble is in the curved surface display area, interval between the particle of the cotton part of first bubble is greater than the interval between the particle of the cotton part of second bubble, then can make the cotton part of first bubble have better buffering effect than the cotton part of second bubble, improve the anti extrusion of plane display area, shock resistance, and because water generally invades from the edge, the cotton part of second bubble is more compact than the cotton part of first bubble, improve the invasion of waterproof oxygen ability in curved surface display area, thereby make OLED display device can have anti extrusion, shock resistance, and simultaneously, OLED display device has waterproof ability.

Description

OLED display module and OLED display device

Technical Field

The application relates to the technical field of display, in particular to an OLED display module and an OLED display device.

Background

OLED (Organic Light-Emitting Diode) display devices are widely used due to their advantages of self-luminescence, realization of flexibility, and the like. And along with the development of display device, OLED display device is designed as curved surface display device, and among the OLED display device of curved surface design, can receive front extrusion, water erosion scheduling problem, consequently need make OLED display device possess better waterproof ability when can possess better anti extrusion ability, nevertheless heat radiation structure can't reach two kinds of effects simultaneously among the current OLED display device, lead to OLED display device can't cushion when receiving the extrusion to lead to OLED display device to appear damaging, unable normal demonstration.

Therefore, the OLED display device with the curved surface design in the prior art has the technical problem that the OLED display device is damaged due to the fact that the OLED display device cannot buffer when being extruded.

Disclosure of Invention

The embodiment of the application provides an OLED display module and an OLED display device, which are used for relieving the technical problem that an OLED display device with the existing curved surface design is damaged because the OLED display device cannot be buffered when being extruded.

The embodiment of the application provides an OLED display module assembly, this OLED display module assembly includes:

an OLED display panel;

the grid adhesive layer is arranged on one side of the OLED display panel;

the foam layer is arranged on one side, far away from the OLED display panel, of the grid glue layer;

the bonding layer is arranged on one side, away from the grid glue layer, of the foam layer;

the metal layer is arranged on one side, far away from the foam layer, of the bonding layer;

the OLED display module comprises a plane display area and a curved surface display area, the foam layer comprises a first foam part and a second foam part, the first foam part is located in the plane display area, the second foam part is located in the curved surface display area, and the distance between the particles of the first foam part is larger than the distance between the particles of the second foam part.

In some embodiments, the first foam portion has a micro-morphology that is half open and half closed and the second foam portion has a micro-morphology that is fully closed.

In some embodiments, the first foam portion and the second foam portion are attached to each other at a boundary between the flat display area and the curved display area.

In some embodiments, the curved surface display area includes a first curved surface display area and a second curved surface display area located on both sides of the planar display area, and the second foam portion is disposed in at least one of the first curved surface display area and the second curved surface display area.

In some embodiments, the curved surface display area further includes a third curved surface display area located at an upper side of the flat surface display area and a fourth curved surface display area located at a lower side of the flat surface display area, and the second foam portion is disposed at least one of the third curved surface display area and the fourth curved surface display area.

In some embodiments, the particles of the first foam portion have a diameter greater than the diameter of the particles of the second foam portion.

In some embodiments, the first foam portion comprises a plurality of particles, and at least some of the particles are provided with holes.

In some embodiments, the second foam portion comprises a plurality of particles of different diameters, the smallest diameter particle having a diameter smaller than the diameter of a gap enclosed by the plurality of particles.

In some embodiments, the first foam portion is a different material than the second foam portion.

Meanwhile, the embodiment of the application provides an OLED display device, which includes an OLED display module and an electronic component, the OLED display module includes:

an OLED display panel;

the grid adhesive layer is arranged on one side of the OLED display panel;

the bonding layer is arranged on one side, away from the grid adhesive layer, of the foam layer;

Has the beneficial effects that: the application provides an OLED display module assembly and OLED display device, this OLED display module assembly includes OLED display panel, the net glue film, the cotton layer of bubble, bond line and metal level, the net glue film sets up in OLED display panel one side, the cotton layer of bubble sets up in the one side that OLED display panel was kept away from to the net glue film, the bond line sets up in the one side that the cotton layer of bubble kept away from the net glue film, the metal level sets up in the one side that the cotton layer of bubble was kept away from to the bond line, wherein, OLED display module assembly includes flat display area and curved surface display area, the cotton layer of bubble includes first cotton part of bubble and the cotton part of second bubble, first cotton part of bubble is located flat display area, the cotton part of second bubble is located curved surface display area, interval between the cotton part of first bubble is greater than the interval between the cotton part of second bubble. This application is through setting up the cotton layer of bubble into the cotton part of first bubble and second bubble, make the cotton part setting of first bubble in the plane display area, the cotton part setting of second bubble is in the curved surface display area, interval between the particle of the cotton part of first bubble is greater than the interval between the particle of the cotton part of second bubble, then can make the cotton part of first bubble have better buffering effect than the cotton part of second bubble, improve the anti extrusion of plane display area, shock resistance, and because water generally invades from the edge, the cotton part of second bubble is compacter than the cotton part of first bubble, improve the waterproof oxygen invasion ability of curved surface display area, thereby make OLED display device can have anti extrusion, shock resistance, and simultaneously, OLED display device has waterproof ability.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a first schematic view of an OLED display module according to an embodiment of the present disclosure.

Fig. 2 is a second schematic view of an OLED display module according to an embodiment of the present disclosure.

Fig. 3 is a third schematic view of an OLED display module according to an embodiment of the present disclosure.

Fig. 4 is a schematic diagram of an OLED display device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application 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 application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

As shown in fig. 1, fig. 2, and fig. 3, an embodiment of the present application provides an OLED display module, where the OLED display module 1 includes:

an OLED display panel 10;

the grid adhesive layer 214 is arranged on one side of the OLED display panel 10;

the foam layer 213 is arranged on one side of the grid glue layer 214 far away from the OLED display panel 10;

the adhesive layer 212 is arranged on one side, away from the grid glue layer 214, of the foam layer 213;

the metal layer 211 is arranged on one side of the adhesive layer 212 far away from the foam layer 213;

the OLED display module 1 includes a planar display area 151 and a curved display area 152, the foam layer 213 includes a first foam portion 213a and a second foam portion 213b, the first foam portion 213a is located in the planar display area 151, the second foam portion 213b is located in the curved display area 152, and a distance between particles 311 of the first foam portion 213a is greater than a distance between particles 313 of the second foam portion 213 b.

The embodiment of the application provides an OLED display module assembly, this OLED display module assembly will steep the cotton layer and set up to first bubble cotton part and the cotton part of second bubble, make the cotton part setting of first bubble in the plane display district, the cotton part setting of second bubble is in the curved surface display district, interval between the particle of the cotton part of first bubble is greater than the interval between the particle of the cotton part of second bubble, then can make the cotton part of first bubble have better buffering effect than the cotton part of second bubble, improve the anti extrusion of plane display district, shock resistance, and because water generally invades from the edge, the cotton part of second bubble is compacter than the cotton part of first bubble, improve the waterproof oxygen invasion ability in curved surface display district, thereby make OLED display device can have anti extrusion, shock resistance, and simultaneously, OLED display device has waterproof ability.

Specifically, in the using process of the OLED display device, the front or the back of the OLED display device, that is, the flat display portion, may be pressed or impacted, so that the flat display area of the OLED display device needs to have better anti-pressing and anti-impact capabilities, while the OLED display device needs to have better waterproof capabilities, water and oxygen generally invade the side of the OLED display device, and then invade each film layer of the OLED display device through the film layers or gaps between the film layers, resulting in the failure of the OLED display device, so that the side of the OLED display device needs to have better water and oxygen blocking capabilities. This application embodiment sets up the interval of the cotton partial particle of first bubble in the plane display district to be greater than the interval of the cotton partial particle of second bubble through distinguishing design to plane display district and curved surface display district, then can improve the anti extrusion of the cotton display district of bubble, shock resistance, and make the plane display district have the permanent loss rate of thickness of crossing the end, and in the curved surface display district, the cotton layer of bubble is more compact, improves the waterproof performance in curved surface display district.

In one embodiment, the first foam portion has a micro-morphology that is half open and half closed and the second foam portion has a micro-morphology that is fully closed. This application embodiment is through forming the cotton part of two kinds of different first bubble and the cotton part of second bubble on the cotton layer of bubble, from the microcosmic form, and the cotton part of first bubble presents half-open half-close state, consequently, has some clearances to provide the buffering to damage when avoiding the cotton part of first bubble to receive the extrusion or assault, improve the flat display area's of OLED display module shock resistance and anti extrusion ability. And the microscopic form of the second foam part is fully closed, so that the second foam part has fewer gaps and smaller gaps, the possibility of water and oxygen invasion can be reduced, and the water and oxygen blocking capability of the curved surface display area of the OLED display module is improved.

The problem of separation may occur for the first foam portion and the second foam portion. In one embodiment, at the boundary between the flat display area and the curved display area, the first foam part and the second foam part are attached to each other. This application embodiment is when forming first bubble cotton part and the cotton part of second bubble, through making first bubble cotton part and the cotton part of second bubble solidify simultaneously, make the cotton part of first bubble and the cotton part laminating that can be inseparable of second bubble be in the same place, first bubble cotton part and the cotton part laminating setting of second bubble promptly, then be in planar state at OLED display module, perhaps OLED display module is in when crooked state, first bubble cotton part and the cotton part homoenergetic laminating of second bubble are in the same place, avoid the cotton layer of bubble to have the clearance to lead to other retes can't form, reduce OLED display device's yield.

In one embodiment, the curved surface display area comprises a first curved surface display area and a second curved surface display area which are located in the plane display area, and the second foam part is arranged in at least one of the first curved surface display area and the second curved surface display area. When the curved surface part of the OLED display device is designed into a curved surface on two sides, the second foam part is arranged in at least one of the first curved surface display area and the second curved surface display area, and the second foam part can prevent water and oxygen from invading from the side surface.

Specifically, the second foam part can be arranged in the first curved surface display area, or the second foam part is arranged in the second curved surface display area, or the second foam part is arranged in the first curved surface display area and the second curved surface display area, so that the second foam part can block water and oxygen invasion of each area.

In one embodiment, the curved surface display area further includes a third curved surface display area located on an upper side of the flat surface display area and a fourth curved surface display area located on a lower side of the flat surface display area, and the second foam portion is disposed on at least one of the third curved surface display area and the fourth curved surface display area. When the OLED display device is designed to be four curved surfaces, the second foam part is arranged on each curved surface of the four curved surfaces, so that water and oxygen are prevented from invading from each curved surface, and the water and oxygen blocking capability of the OLED display module is improved.

Specifically, the second foam part may be disposed in one of the first curved surface display area, the second curved surface display area, the third curved surface display area and the fourth curved surface display area, or the second foam part may be disposed in two of the first curved surface display area, the second curved surface display area, the third curved surface display area and the fourth curved surface display area, or the second foam part may be disposed in three of the first curved surface display area, the second curved surface display area, the third curved surface display area and the fourth curved surface display area, or the fourth foam part may be disposed in the first curved surface display area, the second curved surface display area, the third curved surface display area and the fourth curved surface display area. When the OLED display device is designed to be four curved surfaces, the second foam part is arranged in each curved surface display area of the four curved surface display areas, so that water and oxygen are prevented from invading from each curved surface, and the water and oxygen blocking capacity of the OLED display module is improved.

The above embodiments have been described in detail by taking a flat display area and a curved display area of the OLED display device as examples. However, the embodiments of the present application are not limited thereto, and different foam portions may be disposed in the non-display area for different designs of the non-display area, which is specifically described in the following embodiments.

In one embodiment, when the two sides of the OLED display module are bent and the upper and lower sides of the OLED display module leave the planar non-display areas, the OLED display module includes the curved non-display areas located at the two sides and the planar non-display areas located at the upper and lower sides, and the second foam portion may be disposed in the curved non-display areas to prevent water and oxygen from entering the OLED display device from the side surfaces. And for the plane non-display area of upper and lower sides, in order to avoid the invasion of water and oxygen, and improve the anti extrusion and shock resistance of OLED display module assembly, can all divide the plane non-display area of upper and lower sides of OLED display module assembly into two parts, namely, set up the cotton part of second bubble in the area that is close to the external world in the plane non-display area of upside, the area that is close to the plane display area in the plane non-display area of upside sets up first bubble cotton part, correspondingly, the area that is close to the plane display area in the plane non-display area of downside sets up first bubble cotton part, the area that is close to the external world in the plane non-display area of downside sets up the cotton part of second bubble, thereby can improve the anti extrusion of plane area, shock resistance, and can improve the ability of OLED display module assembly's separation water and oxygen.

In an implementation, when the OLED display module assembly is the OLED display device of four curved surfaces design, four sides of the OLED display module assembly all can be crooked, consequently, the non-display area of OLED display module assembly is the non-display area of curved surface, and the non-display area of curved surface sets up in the one side that the plane display area was kept away from in the display area of curved surface, then can set up the cotton part of second bubble in the non-display area of curved surface for the cotton part of second bubble increases the ability of the separation oxygen of OLED display module assembly, thereby avoid oxygen from each edge invasion.

In one embodiment, the particles of the first foam portion have a diameter greater than the diameter of the particles of the second foam portion. Through making the diameter of the particle of first bubble cotton part be greater than the diameter of the particle of second bubble cotton part, then in first bubble cotton part, there is the space between the particle of first bubble cotton part, and particle diameter is too big, can't fill to the space at same layer particle, can only fill to the compactness of first bubble cotton part in order to keep the gap through other layers, but because the diameter of the particle of first bubble cotton part is great, lead to the space great, the holding power of air in the first bubble cotton part is stronger, make the buffer capacity of first bubble cotton part better, and the diameter of second bubble cotton part is littleer, make the space between the second bubble cotton part less, when the space is great, the less particle of diameter can fill to the space, reduce the space, make the second bubble cotton part more compact, thereby improve the ability that the second bubble cotton part blockked water oxygen.

In one embodiment, as shown in fig. 2, the first foam portion 213a includes a plurality of particles 311, and at least some of the particles 311 are provided with holes 312. When the first foam part is formed, holes are formed on particles of the first foam part, so that the buffering performance of the first foam part is improved.

In one embodiment, as shown in fig. 2, the second foam portion 213b includes a plurality of second foam particles 313, and at least a portion of the second foam particles 311 has pores 314, and the number of the pores is less than the number of the holes. When the first foam part and the second foam part are formed, the buffering capacity of the first foam part is better due to the fact that the number of holes in the first foam part is large, the compactness of the second foam part is better, and the water and oxygen blocking capacity of the second foam part is better.

In one embodiment, the second foam portion comprises a plurality of particles of different diameters, the diameter of the particle of the smallest diameter being smaller than the diameter of the gap enclosed by the plurality of particles. Make the particle of the cotton part of second bubble can fill to the clearance that other particles enclose promptly, then can reduce the clearance in the cotton part of second bubble for the cotton part of second bubble is compacter, thereby avoids the invasion of water oxygen, improves OLED display module group separation water oxygen's ability.

In one embodiment, the first foam part and the second foam part are made of different materials, and the first foam part and the second foam part are made of different materials, so that when the first foam part and the second foam part are formed, the first foam part and the second foam part have different performances, the first foam part has better extrusion resistance and impact resistance, and the second foam part has better water and oxygen blocking capability.

In one embodiment, the first foam portion and the second foam portion are of equal thickness. Through making the thickness of the first foam part equal with that of the second foam part, defects can be avoided when other film layers are formed, the formation of other film layers is facilitated, and the yield of the OLED display device is improved.

The foregoing embodiment has been described in detail by taking the heat dissipation structure 21 in fig. 1 as an example, but the embodiment of the present application is not limited thereto, and when the technical solution described in the embodiment of the present application can be adopted for other heat dissipation structures, the technical solution of the present application can also be adopted to improve the anti-extrusion and impact resistance capability and the water and oxygen blocking capability of the OLED display device.

In one embodiment, as shown in fig. 1, the adhesive layer 212 includes a first pressure sensitive adhesive layer 212a, a polyimide layer 212b, and a second pressure sensitive adhesive layer 212c.

In one embodiment, as shown in fig. 1, the OLED display panel 10 includes a substrate 11, a driving circuit layer 12, a light emitting function layer 13, and an encapsulation layer 14.

In one embodiment, as shown in fig. 1, the driving circuit layer 12 includes an active layer 121, a first gate insulating layer 122, a first metal layer 123, a second gate insulating layer 124, a second metal layer 125, an interlayer insulating layer 126, a source drain layer 127, and a planarization layer 128.

In one embodiment, as shown in fig. 1, the light emitting function layer 13 includes a pixel electrode layer 131, a pixel defining layer 132, a light emitting material layer 133, and a common electrode layer 134.

In one embodiment, the encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer.

Meanwhile, according to experiments, the compression strength of the first foam part is higher than that of the second foam part, the point impact coefficient of the first foam part is higher than that of the second foam part, the surface impact absorption rate of the first foam part is higher than that of the second foam part, the permanent loss rate of the compression thickness of the first foam part is lower than that of the second foam part, the density of the first foam part is higher than that of the second foam part, and the water absorption rate of the first foam part is higher than that of the second foam part.

Meanwhile, the embodiment of the application provides a preparation method of an OLED display module, and the preparation method of the OLED display module comprises the following steps:

providing a metal layer;

providing a foam layer;

bonding the metal layer and the foam layer through a bonding layer; the foam layer comprises a first foam part and a second foam part;

forming a grid adhesive layer on the foam layer to obtain a heat dissipation structure;

attaching the heat dissipation structure to an OLED display panel to obtain an OLED display module; wherein, OLED display module assembly includes plane display area and curved surface display area, the cotton part of first bubble is located the plane display area, the cotton part of second bubble is located the curved surface display area, the interval between the particle of the cotton part of first bubble is greater than the interval between the particle of the cotton part of second bubble.

In one embodiment, the step of providing a foam layer comprises:

compounding the first material with acrylic resin;

blending the second material with acrylic resin;

foaming the first material by using a half-open and half-closed process to obtain a first foaming material;

foaming the second material by using a closed-cell foaming process to obtain a second foamed material;

coating a first foaming material and a second foaming material on a bearing film, baking and cutting to obtain a first foam part and a second foam part; the thicknesses of the first foam part and the second foam part are equal;

and separating the first foam part and the second foam part from the carrier film to obtain the foam layer.

The embodiment of the application provides a preparation method of an OLED display module, the preparation method of the OLED display module is adopted, the formed first foam part and the second foam part have different properties, specifically, the first foam part has better buffer performance, the second foam part has better capability of blocking water and oxygen, the first foam part is arranged in a plane display area, the second foam part is arranged in a curved surface display area, the distance between particles of the first foam part is larger than that between particles of the second foam part, the first foam part can have better buffer effect compared with the second foam part, the extrusion resistance and impact resistance of the plane display area are improved, water generally invades from the edge, the second foam part is more compact compared with the first foam part, the water-proof oxygen invasion capability of the curved surface display area is improved, and therefore the OLED display device can have the extrusion resistance and the impact resistance, and meanwhile, the OLED display device has the waterproof capability.

Meanwhile, as shown in fig. 4, an embodiment of the present application provides an OLED display device, which includes an OLED display module 1 and an electronic component 41, where the OLED display module 1 includes:

an OLED display panel 10;

The embodiment of the application provides an OLED display device, this OLED display device includes OLED display module assembly and electronic component, this OLED display module assembly sets up the cotton layer of bubble into first bubble cotton part and the cotton part of second bubble, make first bubble cotton part set up in the plane display district, the cotton part of second bubble sets up in the curved surface display district, interval between the particle of first bubble cotton part is greater than the interval between the particle of second bubble cotton part, then can make first bubble cotton part compare in the cotton part of second bubble have better buffering effect, improve the anti extrusion of plane display district, shock resistance, and because water generally invades from the edge, the cotton part of second bubble is more compact than in first bubble cotton part, improve the waterproof oxygen invasion ability in curved surface display district, thereby make OLED display device can have anti extrusion, shock resistance, and simultaneously, OLED display device has waterproof ability.

According to the above embodiment:

the embodiment of the application provides an OLED display module assembly and OLED display device, this OLED display module assembly includes OLED display panel, the net glue film, the cotton layer of bubble, bonding layer and metal level, the net glue film sets up in OLED display panel one side, the cotton layer of bubble sets up in the one side that OLED display panel was kept away from to the net glue film, the bonding layer sets up in the cotton layer of bubble one side of keeping away from the net glue film, the metal level sets up in the bonding layer one side of keeping away from the cotton layer of bubble, wherein, OLED display module assembly includes flat display area and curved surface display area, the cotton layer of bubble includes first cotton part of bubble and the cotton part of second bubble, first cotton part of bubble is located the flat display area, the cotton part of second bubble is located the curved surface display area, interval between the cotton part of first bubble is greater than the interval between the cotton part of second bubble's particle. This application is through setting up the cotton layer of bubble into the cotton part of first bubble and second bubble, make the cotton part setting of first bubble in the plane display area, the cotton part setting of second bubble is in the curved surface display area, interval between the particle of the cotton part of first bubble is greater than the interval between the particle of the cotton part of second bubble, then can make the cotton part of first bubble have better buffering effect than the cotton part of second bubble, improve the anti extrusion of plane display area, shock resistance, and because water generally invades from the edge, the cotton part of second bubble is compacter than the cotton part of first bubble, improve the waterproof oxygen invasion ability of curved surface display area, thereby make OLED display device can have anti extrusion, shock resistance, and simultaneously, OLED display device has waterproof ability.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The OLED display module and the OLED display device provided in the embodiments of the present application are described in detail above, and specific examples are applied in the description to explain the principle and the implementation manner of the present application, and the description of the embodiments above is only used to help understand the technical solutions and the core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. An OLED display module, comprising:

an OLED display panel;

the grid adhesive layer is arranged on one side of the OLED display panel;

the OLED display module comprises a plane display area and a curved surface display area, the foam layer comprises a first foam part and a second foam part, the first foam part is located in the plane display area, the second foam part is located in the curved surface display area, and the distance between particles of the first foam part is larger than that between particles of the second foam part; the first foam part is in a half-open and half-closed microscopic form, and the second foam part is in a full-closed microscopic form.

2. The OLED display module of claim 1, wherein the first foam portion and the second foam portion are attached to each other at a junction of the flat display area and the curved display area.

3. The OLED display module of claim 1, wherein the curved display area includes a first curved display area and a second curved display area on opposite sides of the flat display area, the second foam portion being disposed in at least one of the first curved display area and the second curved display area.

4. The OLED display module of claim 3, wherein the curved display area further includes a third curved display area located on an upper side of the flat display area and a fourth curved display area located on a lower side of the flat display area, the second foam portion being disposed on at least one of the third curved display area and the fourth curved display area.

5. The OLED display module of claim 1, wherein the particles of the first foam portion have a diameter greater than a diameter of the particles of the second foam portion.

6. The OLED display module of claim 5, wherein the first foam portion comprises a plurality of particles, at least some of the particles having holes.

7. The OLED display module of claim 5, wherein the second foam portion includes a plurality of particles of different diameters, the smallest diameter particle having a diameter smaller than a diameter of a gap defined by the plurality of particles.

8. The OLED display module of claim 1, wherein the first foam portion is a different material than the second foam portion.

9. An OLED display device, characterized in that, OLED display device includes OLED display module assembly and electronic component, OLED display module assembly includes:

an OLED display panel;

the grid adhesive layer is arranged on one side of the OLED display panel;