CN115084206A - Display module, preparation method of display module and display device - Google Patents

Abstract

The invention relates to the technical field of display equipment, in particular to a display module, a preparation method of the display module and a display device comprising the display module. The display module assembly is including the substrate, drive circuit layer, luminescent layer, encapsulated layer, the colour conversion layer and the light-emitting layer that stack gradually the setting, wherein: a plurality of light emitting units are arranged in the light emitting layer in an array manner; a color film, shading blocks and bridge electrodes at least covering the side walls of the shading blocks are arranged in the color conversion layer, the color films are provided with a plurality of bridge electrodes, the bridge electrodes are arranged opposite to the light emitting units one by one, the shading blocks are arranged between the adjacent color films, and the parts of the bridge electrodes covering the side walls of the shading blocks form reflecting surfaces; the surface of one side, far away from the substrate, of the color conversion layer is provided with a plurality of touch electrodes, the touch electrodes are arranged opposite to the shading blocks, and part of the touch electrodes are connected through bridge electrodes. The distance between the light-emitting unit and the color film in the color conversion layer is reduced, the luminous visual angle of the display module is increased, the light-emitting utilization rate of the display module is increased, and the power consumption of a product is reduced.

Description

Display module, preparation method of display module and display device

Technical Field

The invention relates to the technical field of display equipment, in particular to a display module, a preparation method of the display module and a display device comprising the display module.

Background

An Organic light-emitting diode (OLED) is a necessary display device for the existing high-end flagship mobile phone, and has the advantages of rich color, light weight, thinness, low power consumption and the like. However, since the OLED has a low light efficiency, it is necessary to improve the existing module structure to improve the light efficiency.

Disclosure of Invention

In view of this, embodiments of the present invention provide a display module, a method for manufacturing the display module, and a display device including the display module, so as to solve the technical problem in the prior art that the structural design of the display module has a low light efficiency utilization rate.

In order to achieve the above object, according to an aspect of an embodiment of the present invention, a display module is provided.

According to the first aspect of the embodiment of the present invention, the display module includes a substrate, a driving circuit layer, a light emitting layer, an encapsulation layer, a color conversion layer, and a light emitting layer, which are sequentially stacked, wherein:

a plurality of light-emitting units are arranged in the light-emitting layer in an array manner;

a color film, a shading block and a bridge electrode at least covering the side wall of the shading block are arranged in the color conversion layer, the color film is provided with a plurality of bridge electrodes, the bridge electrodes are opposite to the light-emitting units one by one, the shading blocks are arranged between the adjacent color films, and the bridge electrode covers the side wall of the shading block to form a reflecting surface;

the surface of one side, away from the substrate, of the color conversion layer is provided with a plurality of touch electrodes, the touch electrodes are opposite to the shading blocks, and part of the touch electrodes are connected through the bridge electrodes.

In the display module provided by the embodiment of the application, the surface of one side of the color film, which is far away from the substrate, is in fit connection with the light emergent layer, and the refractive index of the light emergent layer is greater than that of the color film.

In the display module provided in the embodiment of the present application, an interface between the color film and the light emitting layer includes a plane parallel to the substrate.

In the display module provided in the embodiment of the present application, an interface between the color film and the light emitting layer includes a curved surface protruding in a direction away from the substrate.

In the display module provided in the embodiment of the present application, the light reflecting surface is a plane facing the light emitting layer.

In the display module provided by the embodiment of the application, the light reflecting surface is a curved surface facing the light emitting layer.

In the display module provided by the embodiment of the application, the light reflecting surface is a plane perpendicular to the substrate.

In the display module that this application embodiment provided, the bridge electrode covers the lateral wall and the top of shading piece at least, the bridge electrode covers the cross sectional shape that the part of shading piece formed is arc, trapezoidal or rectangle.

In the display module provided in the embodiment of the present application, the light emitting layer includes a first light emitting layer and a second light emitting layer, the first light emitting layer covers a surface of a side of the color film away from the substrate, the second light emitting layer covers a side of the first light emitting layer away from the substrate, and a refractive index of the color film, a refractive index of the first light emitting layer, and a refractive index of the second light emitting layer are sequentially increased.

In the display module provided in the embodiment of the present application, an interface between the first light emitting layer and the second light emitting layer includes a plane parallel to the substrate.

In the display module provided in the embodiment of the present application, an interface between the first light emitting layer and the second light emitting layer includes a curved surface protruding in a direction away from the substrate.

In order to achieve the above object, according to a second aspect of the embodiments of the present invention, there is also provided a display device, including the display module provided in the first aspect of the embodiments of the present invention.

In order to achieve the above object, according to a third aspect of the embodiments of the present invention, there is also provided a method for manufacturing a display module, the method being used for manufacturing the display module provided by the first aspect of the embodiments of the present invention. The preparation method comprises the following steps:

sequentially manufacturing a driving circuit layer, a luminous layer and a packaging layer on a substrate;

preparing the shading block, the bridge electrode and the color film on the packaging layer to form the color conversion layer;

and forming a touch electrode on the surface of one side of the color conversion layer, which is far away from the substrate, and covering the light emitting layer.

In the display module and the display device provided by the embodiment of the invention, the touch electrode is arranged on the side of the color conversion layer, which is far away from the substrate, and the bridge electrode is integrated in the color conversion layer. On one hand, an insulating layer, a bridge electrode layer and a first flat layer are omitted between the light emitting layer and the color conversion layer, so that the distance between a light emitting unit in the light emitting layer and a color film in the color conversion layer is reduced, which is equivalent to increase the luminous visual angle of the display module, more light rays emitted by the light emitting unit can be emitted from the color film, and the light ray occupation ratio of the light rays emitted to the shading block is reduced; on the other hand, the bridge electrode is integrated in the color conversion layer and covers the side wall of the shading block, and a reflection surface is formed on the part of the side wall of the shading block, which is covered by the bridge electrode, so that light emitted by the light emitting unit to the side wall of the shading block can be emitted to the color film through the reflection surface and is finally utilized, and the part of the relation is prevented from being absorbed by the shading block. Through above two aspects, can make this application embodiment display module's light-emitting utilization ratio increase, reduce the consumption of product. In addition, by adopting the display module in the embodiment, 2 Mask processes can be saved in the preparation process relative to the preparation process of the display module in fig. 1, so that the yield loss is reduced, and the cost is saved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a cross-sectional view of a display module according to the related art;

fig. 2 is a first cross-sectional view of a display module according to an embodiment of the invention;

fig. 3 is a second cross-sectional view of the display module according to the embodiment of the invention;

fig. 4 is a third cross-sectional view of the display module according to the embodiment of the invention;

FIG. 5 is a schematic diagram of an optical path of the display module shown in FIG. 2;

fig. 6 is a fourth cross-sectional view of the display module according to the embodiment of the invention;

fig. 7 is a fifth cross-sectional view of a display module according to an embodiment of the invention;

fig. 8 is a sixth cross-sectional view of a display module according to an embodiment of the invention;

fig. 9 is a seventh cross-sectional view of a display module according to an embodiment of the disclosure;

fig. 10 is an eighth cross-sectional view of a display module according to an embodiment of the invention;

fig. 11 is a ninth cross-sectional view of the display module according to the embodiment of the invention;

FIG. 12 is a schematic diagram of an optical path of the display module shown in FIG. 9;

fig. 13 is a cross-sectional view of a display module according to an embodiment of the invention;

fig. 14 is an eleventh cross-sectional view of a display module according to an embodiment of the disclosure;

fig. 15 is a twelve cross-sectional view of a display module according to an embodiment of the invention;

fig. 16 is a thirteen sectional view of a display module according to an embodiment of the disclosure;

fig. 17 is a fourteenth cross-sectional view of a display module according to an embodiment of the disclosure; and

fig. 18 is a cross-sectional view fifteen of a display module according to an embodiment of the invention.

In the figure:

1. a substrate; 2. a driving circuit layer; 3. a light emitting layer; 4. a packaging layer; 5. an insulating layer; 6. a bridge electrode layer; 7. a first planar layer; 8. a color conversion layer; 9. a second planar layer; 10. a light emitting unit; 11. a color film; 12. a light shielding block; 13. a first touch electrode; 14. a second touch electrode; 15. a bridge electrode; 16. a light emitting layer; 1601. a first light-emitting layer; 1602. a second light-emitting layer; 17. a light-reflecting surface; 18. and (6) a via hole.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, 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, and it is obvious that the described embodiments are only partial embodiments of the present application, but 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.

It is noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the above-described drawings are intended to cover non-exclusive inclusions, such that a system, product or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

In this application, the terms "upper", "lower", "inner", "middle", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Fig. 1 is a schematic cross-sectional view of an OLED display module structure in the related art, which includes a substrate 1, a driving circuit layer 2, a light emitting layer 3, an encapsulation layer 4, an insulating layer 5, a bridge electrode layer 6, a first flat layer 7, a color conversion layer 8, and a second flat layer 9, which are sequentially stacked. As shown in the figure, a plurality of light emitting units 10 are arranged in an array in the light emitting layer 3, a color film 11 and a shading block 12 are arranged in the color conversion layer 8, the color film 11 is provided with a plurality of touch electrodes which are arranged opposite to the light emitting units 10 one by one, the shading block 12 is arranged between the adjacent color films 11, the touch electrodes are arranged in the first flat layer 7 and opposite to the shading block 12, the touch electrodes comprise a first touch electrode 13 and a second touch electrode 14, bridge electrodes 15 are arranged in the bridge electrode layer 6, the first touch electrodes 13 are directly connected with each other in the first flat layer 7, and the second touch electrodes 14 are connected with each other through the bridge electrodes 15 in the bridge electrode layer 6.

In the display module assembly that this application embodiment provided, directly form touch-control structure on packaging structure, need not additionally to set up the touch-control screen, can be in the same place display structure and touch-control structure integration, have advantages such as frivolous, collapsible, can satisfy product demands such as flexible folding, narrow frame.

However, in the display module shown in fig. 1, since the film layer related to the touch structure is disposed between the color conversion layer 8 and the display structure, the distance between the light emitting unit 10 in the light emitting layer 3 and the color film 11 in the color conversion layer 8 is increased, which is equivalent to reducing the light emitting visibility (L-decay) of the display module, and a large amount of light emitted by the light emitting unit 10 is blocked and absorbed by the bottom surface and the side surface of the light blocking block 12, thereby reducing the light utilization rate, and in order to obtain a desired light emitting effect, the current of the driving circuit has to be increased, which may increase the power consumption.

Based on this, as shown in fig. 2 to 4, an embodiment of the present application provides a display module, which includes a substrate 1, a driving circuit layer 2, a light emitting layer 3, an encapsulation layer 4, a color conversion layer 8, and a light emitting layer 16, which are sequentially stacked, wherein a plurality of light emitting units 10 are arranged in the light emitting layer 3 in an array; a color film 11, a shading block 12 and a bridge electrode 15 are arranged in the color conversion layer 8, the bridge electrode 15 at least covers the side wall of the shading block 12, the color film 11 is provided with a plurality of shading blocks which are arranged opposite to the light-emitting units 10 one by one, the shading block 12 is arranged between the adjacent color films 11, and a reflective surface 17 is formed at the part of the bridge electrode 15 covering the side wall of the shading block 12; the surface of one side, far away from the substrate 1, of the color conversion layer 8 is provided with a plurality of touch electrodes, the touch electrodes are arranged opposite to the shading blocks 12, and part of the touch electrodes are connected through the bridge electrodes 15.

The light-emitting units 10 arranged in an array in the light-emitting layer 3 emit upward, and emit after color conversion is completed by the color film 11, the touch electrodes distributed in the light-emitting layer 16 include first touch electrodes 13 and second touch electrodes 14, the touch electrodes are disposed on a side of the color conversion layer 8 away from the substrate 1, and bridge electrodes 15 are designed in the color conversion layer 8, the first touch electrodes 13 are connected with each other in the light-emitting layer 16, because the arrangement of the first touch electrodes 13 and the arrangement of the second touch electrodes 14 are staggered with each other in the light-emitting layer 16, after the first touch electrodes 13 are connected with each other in the light-emitting layer 16, the second touch electrodes 14 need to bypass the first touch electrodes 13 to complete connection, and in this embodiment, the second touch electrodes 14 are connected with each other by the bridge electrodes 15 in the color conversion layer 8.

In the above embodiment, the touch electrode is disposed on a side of the color conversion layer 8 away from the substrate 1, and the bridge electrode 15 is integrated in the color conversion layer 8, and the film layer related to the touch structure disposed between the color conversion layer 8 and the display structure in fig. 1 is designed on the light emitting side of the color conversion layer 8, so that the above embodiment of the present application has an obvious technical effect compared with the display module in fig. 1. On one hand, the insulating layer 5, the bridge electrode layer 6 and the first flat layer 7 are omitted between the light emitting layer 3 and the color conversion layer 8, so that the distance between the light emitting unit 10 in the light emitting layer 3 and the color film 11 in the color conversion layer 8 is reduced, which is equivalent to increase the luminous visual angle (L-Decaly) of the display module, more light rays emitted by the light emitting unit 10 can be emitted from the color film 11, and the light ray occupation ratio emitted to the shading block 12 is reduced; on the other hand, the bridge electrode 15 is integrated in the color conversion layer 8, the bridge electrode 15 covers the side wall of the light shielding block 12, and a light reflecting surface 17 is formed at a part of the bridge electrode 15 covering the side wall of the light shielding block 12, so that light emitted from the light emitting unit 10 to the side wall of the light shielding block 12 can be emitted to the color film 11 through the light reflecting surface 17 and is finally utilized, and the part of the relationship is prevented from being absorbed by the light shielding block 12. Through above two aspects, can make this application embodiment display module's light-emitting utilization ratio increase, reduce the consumption of product. In addition, by adopting the display module in the embodiment, 2 Mask processes can be saved in the preparation process relative to the preparation process of the display module in fig. 1, so that the yield loss is reduced, and the cost is saved.

In some embodiments of the present application, as shown in fig. 2 and 3, the reflective surface 17 in the display module is disposed toward the light-emitting layer 16, so that all light rays emitted to the reflective surface 17 are reflected to a position where the color film 11 is located, and the reflective surface 17 faces the light-emitting layer 16, so that a positive slope is formed on the light-emitting surface, that is, an outer contour of the bridge electrode 15 on two sides of one light shielding block 12 is designed to be upper (a side originally far away from the substrate 1) narrow and lower (a side close to the substrate 1) wide, so that when the color film 11 is formed on the reflective surface 17, sufficient contact between the reflective surface 17 and the color film 11 can be easily achieved in the process, film peeling is avoided, a hollow structure can also be avoided from being formed between the color film 11 and the reflective surface 17, thereby avoiding unnecessary refraction loss of the light path occurring therein, and enhancing the optical performance.

In some embodiments of the present application, the light-reflecting surface 17 is a plane or a curved surface facing the light-emitting layer 16, and the cross-sectional shape of the light-reflecting surface 17 on the bridge electrode 15 on both sides of one light-shielding block 12 is a figure-eight. Note that the bridge electrode 15 may cover the top (the side away from the substrate 1) of the light shielding block 12 in addition to the side wall of the light shielding block 12. By the design, on one hand, the process can be realized easily, and only a whole layer of material is deposited on the module of the prepared shading block 12 and then patterned to form the bridge electrode 15; on the other hand, the portion of the bridge electrode 15 covering the top surface of the light shielding block 12 can be conveniently connected with the touch electrode above, the second touch electrode 14 is electrically connected with the bridge electrode 15 in a cross-layer mode through the via hole 18, the distance between the portion of the bridge electrode 15 covering the top of the light shielding block 12 and the second touch electrode 14 is shortest, the via hole 18 is manufactured at the position, so that the distance between the via hole 18 and the conductive material filled in the via hole is shortest, and certain advantages are achieved in terms of process and cost.

Specifically, in some embodiments, as shown in fig. 2, the bridge electrode 15 covers both the side wall and the top of the light shielding block 12, the light reflecting surface 17 is a curved surface facing the light emitting layer 16, and a portion of the bridge electrode 15 at the top of the light shielding block 12 is also a curved surface, and a cross-sectional shape formed by an outer contour of a portion of the bridge electrode 15 covering the light shielding block 12 is a continuous curve, for example, a circular arc shape. Under the condition that the pixels of the display module are large, the density of the shading blocks 12 is high for the bridge electrodes 15 with the arc-shaped cross sections, the bridge electrodes 15 with other formed shapes are difficult to finish in the process, and the bridge electrodes 15 with the arc-shaped cross sections and other curve shapes can be easily realized through the existing process, so that the design requirements are met.

Specifically, in other embodiments, as shown in fig. 3, the bridge electrode 15 covers both the side wall and the top of the light shielding block 12, the light reflecting surface 17 is a plane facing the light emitting layer 16, and the portion of the bridge electrode 15 on the top of the light shielding block 12 is disposed parallel to the substrate 1, where the cross-sectional shape formed by the outer contour of the portion of the bridge electrode 15 covering the light shielding block 12 is a trapezoid (the trapezoid does not include the lower base). The bridge electrode 15 with the trapezoidal section can be completed in the display module according to the prior art under the condition that the pixel requirement of the display module is not high, so that the design requirement is met, and the bridge electrode can be selected by the technical personnel in the field as required.

In some embodiments of the present application, the light-reflecting surface 17 may also be a plane perpendicular to the substrate 1, as shown in fig. 4. The vertically arranged reflecting surface 17 can prevent the light reflected by the reflecting surface from emitting out of the display module along the direction vertical to the substrate 1, and can prevent the light leakage phenomenon of the display module in some use states. In the present embodiment, similarly, the bridge electrode 15 may cover the top (the side away from the substrate 1) of the light shielding block 12 in addition to the side wall of the light shielding block 12, so as to facilitate the preparation of the bridge electrode 15 and the connection of the second touch electrode 14 and the bridge electrode 15. The bridge electrode 15 is disposed parallel to the substrate 1 at the top of the light shielding block 12, and the cross-sectional shape of the outer contour of the portion of the bridge electrode 15 covering the light shielding block 12 is a rectangle (the rectangle does not include the bottom side).

It should be noted that the shape of the light shielding block 12 and the bridge electrode 15 covering the light shielding block may be the same or different, as long as the bridge electrode 15 can cover the side surface of the light shielding block 12 to form the light reflecting surface 17, but from the process perspective, the shape of the light shielding block 12 and the bridge electrode 15 covering the light shielding block is usually kept consistent, so that the bridge electrode 15 grows on the surface of the light shielding block 12 by a deposition or sputtering process, and can form a conformal design with the light shielding block 12. For example, the cross-sectional shape of the light shielding block 12 is an arc, the bridge electrode 15 grown thereon is also an arc, and the cross-sectional shape of the light shielding block 12 is a trapezoid or a rectangle, so that the profile of the bridge electrode 15 grown thereon is also not a trapezoid or a rectangle.

In the display module provided in the embodiment of the application, a surface of one side of the color film 11, which is far away from the substrate 1, is attached to the light emitting layer 16, and a refractive index of the light emitting layer 16 is greater than a refractive index of the color film 11. As shown in fig. 5, when light exits from the color film 11 into the light-exiting layer 16, light is refracted, and the incident angle and the refraction angle conform to the refraction law, that is, n ₁ sinβ＝n ₀ sin beta', where n is ₀ 、n ₁ The refractive index of the light emergent layer 16 and the refractive index of the color film 11 are respectively, β is an incident angle, and β' is a refraction angle. As the angle of incidence β changes, foldThe angle of refraction beta' follows due to the refractive index n of the light-emitting layer 16 ₀ Refractive index n greater than color film 11 ₁ . Therefore, the incident angle β is larger than the refraction angle β', that is, the emergent light is deflected in a direction close to the normal line relative to the incident light line, so that the emergent light exhibits a converging effect, and the utilization effect of the emergent light is further improved.

Optionally, in the above embodiment, as shown in fig. 2 to 4, an interface between the color film 11 and the light emitting layer 16 includes a plane parallel to the substrate 1. At this time, a normal line on a plane interface between the color film 11 and the light emitting layer 16 is always perpendicular to the substrate 1.

Optionally, in the above embodiment, as shown in fig. 6 to 8, an interface between the color filter 11 and the light emitting layer 16 includes a curved surface protruding in a direction away from the substrate 1. At this time, a normal on a curved surface interface between the color film 11 and the light emitting layer 16 is always perpendicular to a tangent at an incident point. The curved interface can further improve the gathering effect of the emergent light compared with the planar interface.

In the display module provided in the embodiment of the present application, as shown in fig. 9 to 18, the light emitting layer 16 includes a first light emitting layer 1601 and a second light emitting layer 1602, the first light emitting layer 1601 covers a surface of a side of the color filter 11 away from the substrate 1, the second light emitting layer 1602 covers a side of the first light emitting layer 1601 away from the substrate 1, and a refractive index of the color filter 11, a refractive index of the first light emitting layer 1601, and a refractive index of the second light emitting layer 1602 are sequentially increased.

The side surface of the color film 11 away from the substrate 1 is attached to the first light emitting layer 1601 to form a first interface, and the side surface of the first light emitting layer 1601 away from the substrate 1 is attached to the second light emitting layer 1602 to form a second interface. As shown in fig. 12, when light exits from the color film 11 into the first light-exiting layer 1601, light refraction occurs, and the incident angle and the refraction angle at the first interface conform to the refraction law, that is, n ₁ sinβ＝n ₀₁ sin α, wherein n ₀₁ 、n ₁ Refractive index and color film 1 of the first light emitting layer 16011, beta is the angle of incidence at the first interface, and alpha is the angle of refraction at the first interface. Due to the refractive index n of the first light-emitting layer 1601 ₀₁ Refractive index n greater than color film 11 ₁ Therefore, the incident angle β at the first interface is larger than the refraction angle α at the first interface, that is, the outgoing light ray at the first interface is deflected toward the direction close to the normal line with respect to the incident light ray at the first interface, so that the outgoing light ray at the first interface exhibits a converging effect; similarly, when light exits the first light-exiting layer 1601 into the second light-exiting layer 1602, light refraction occurs again, and the incident angle and refraction angle at the second interface conform to the law of refraction, i.e., n ₀₁ sinα′＝n ₀₂ sin gamma, where n is ₀₁ 、n ₀₂ Respectively, the refractive index of the first light extraction layer 1601 and the refractive index of the second light extraction layer 1602, α' is the angle of incidence at the second interface, and γ is the angle of refraction at the second interface. Due to the refractive index n of the second light extraction layer 1602 ₀₂ Is larger than the refractive index n of the first light extraction layer 1601 ₀₁ Therefore, the incident angle α' at the second interface is larger than the refraction angle γ at the second interface, i.e. the outgoing light ray at the second interface is deflected towards the direction close to the normal line relative to the incoming light ray at the second interface, so that the outgoing light at the second interface further exhibits the converging effect. By designing the light emitting layer 16 as the first light emitting layer 1601 and the second light emitting layer 1602, the light emitting unit 10 directly emits into the color film 11 and reflects into the color film 11 through the bridge electrode 15, and two refractions are continuously generated when entering the first light emitting layer 1601 and entering the light emitting layer 16, so that a two-time converging effect is generated, and a light emitting effect is greatly improved.

Alternatively, in the above embodiments, the second interface between the first light-exiting layer 1601 and the second light-exiting layer 1602 as shown in fig. 9-11 comprises a plane parallel to the substrate 1. At this time, a normal on a second interface in a planar form between the first light extraction layer 1601 and the second light extraction layer 1602 is always perpendicular to the substrate 1. The first interface between the color film 11 and the first light-emitting layer 1601 in fig. 9-11 is also planar, when the normal lines on the two interfaces are parallel, and the refraction angle α of the same light ray at the first interface is equal to the incident angle α' at the second interface.

Alternatively, in the above embodiments, as shown in fig. 13 to 18, the second interface between the first light extraction layer 1601 and the second light extraction layer 1602 includes a curved surface parallel to the substrate 1. At this time, a normal on a second interface in the form of a curved surface between the first light extraction layer 1601 and the second light extraction layer 1602 is always perpendicular to a tangent at the incident point. At this time, no matter the first interface between the color film 11 and the first light exiting layer 1601 is a plane (as shown in fig. 13-15) or a curved surface (as shown in fig. 16-18), as long as the normals on the two interfaces are not parallel, the refraction angle α of the same light ray at the first interface is not equal to the incident angle α 'of the second interface, and only when the normals on the two interfaces are parallel, the refraction angle α of the same light ray at the first interface is equal to the incident angle α' of the second interface. The second interface in the form of the curved surface can further improve the gathering effect of the emergent rays compared with the second interface in the form of the plane. It should be noted that the first interface between the first light emitting layer 1601 and the color film 11 may be in the form of a curved surface, or in the form of continuous arrangement of a plurality of curved surfaces or in the form of interval arrangement of a plurality of curved surfaces; the second interface between the first light emitting layer 1601 and the second light emitting layer 1602 can be in the form of a curved surface, or in the form of a continuous arrangement of a plurality of curved surfaces, or in the form of an interval arrangement of a plurality of curved surfaces.

For example, the following provides a method for manufacturing a display module shown in fig. 2 to 18 according to an embodiment of the present invention, and specifically includes:

in step S100, the driving circuit layer 2, the light emitting layer 3, and the encapsulating layer 4 are sequentially formed on the substrate 1.

In this step, the substrate 1 may be a hard substrate 1 or a flexible substrate 1. The material of the hard substrate 1 includes but is not limited to glass, and the material of the flexible substrate 1 includes but is not limited to Polyimide (PI), for example, the substrate 1 provided in this embodiment may be a PI flexible film layer formed on rigid glass by deposition or coating, and after the display module is manufactured, the display module of the flexible substrate 1 may be obtained by peeling off the rigid glass.

The driving circuit layer 2 in the present application is provided with a pixel driving circuit, which may include a plurality of transistor structures. The buffer layer may be deposited on the entire surface of the substrate 1 before the driving circuit layer 2 is formed, but it may not include the buffer layer or include a plurality of buffer layers according to circumstances. An active layer and a gate insulating layer 5 are arranged in the driving circuit layer 2, the gate insulating layer 5 covers the active layer, and a gate electrode is arranged on the surface, far away from the substrate 1, of the gate insulating layer 5; the gate insulating layer 5 is far away from the surface of the substrate 1 and is provided with an interlayer dielectric layer covering the gate, the interlayer dielectric layer is far away from the surface of the substrate 1 and is provided with a source electrode and a drain electrode, and the source electrode and the drain electrode are electrically connected with the active layer in a cross-layer mode respectively.

The light emitting unit 10 in the light emitting layer 3 is preferably an OLED light emitting device, and the specific structure of the light emitting layer 3 where the OLED light emitting device is located has no special requirement, and can be flexibly selected by a person skilled in the art according to actual situations. For example, the light emitting layer 3 may include a pixel defining layer having a plurality of openings, an anode disposed in the openings (the anode is electrically connected to the drain through a cross layer), an HTL (hole transport layer), a light emitting material, an ETL (electron transport layer), and a cathode sequentially disposed on the anode.

The specific structure of the encapsulation layer 4 has no special requirement, and those skilled in the art can flexibly select various encapsulation film layers in the related art according to the actual situation. For example, an inorganic thin film may be deposited on the formed light-emitting layer 3, then a second organic thin film is formed by inkjet printing, and finally a second inorganic thin film is deposited, so as to complete the encapsulation layer 4 including an inorganic/organic/inorganic three-layer structure. Of course, the structure of the encapsulation layer 4 is not limited thereto, and one skilled in the art may select a single-layer or more-layer film structure as the encapsulation layer 4 according to the requirement.

Step S200, preparing the light shielding block 12, the bridge electrode 15 and the color film 11 on the encapsulation layer 4 to form the color conversion layer 8.

On the basis of the formed encapsulation layer 4, a light shielding layer film is coated, and a light shielding block 12 pattern is formed through a photolithography process, specifically, the light shielding block 12 is preferably a Black Matrix (BM). In the orthographic projection formed on the surface of the substrate 1, the orthographic projection of the light shielding block 12 is positioned outside the pixel opening area in the light emitting layer 3, so that light is prevented from being shielded.

After the light shielding block 12 is manufactured, a metal film is deposited, and the metal film is patterned by a patterning process to form the covered bridge electrode 15. The bridge electrode 15 may be made of a metal material, such as any one or more of silver (Ag), copper (Cu), aluminum (Al), and molybdenum (Mo), or an alloy material of the above metals, such as aluminum neodymium alloy (AlNd) or molybdenum niobium alloy (MoNb).

After the bridge electrode 15 is fabricated, the color film 11 is fabricated. The types of the color films 11 may include a first color film 11, a second color film 11, and a third color film 11, for example, the first color film 11 is a red color film 11, the second color film 11 is a green color film 11, and the third color film 11 is a blue color film 11; certainly, the types of the color films 11 may further include a fourth color film 11, for example, the fourth color film 11 is a yellow color film 11. In this embodiment, a manufacturing process of the color films 11, which may include the first color film 11, the second color film 11, and the third color film 11, is described as an example. Coating a first light filtering film on the structure with the pattern, and forming the pattern of a first color film 11 through a photoetching process; coating a second light filtering film, and forming a pattern of a second color film 11 through a photoetching process; and coating a third light filtering film, and forming a pattern of a third color film 11 through a photoetching process. The first color film 11, the second color film 11 and the third color film 11 are filled in the space between the shading blocks 12 and cover the bridge electrode 15 and the shading blocks 12.

Step S300: and forming a touch electrode on the surface of one side of the color conversion layer 8, which is far away from the substrate 1, and covering the light emitting layer 16.

On the basis of forming the structure, a plurality of via holes 18 are formed in the color film 11 to expose the bridge electrode 15, the via holes 18 are filled with a conductive material, a metal film layer is formed on the surface of the color conversion layer 8, patterns of the first touch electrodes 13 and the second touch electrodes 14 are formed through a composition process, the first touch electrodes 13 are directly connected in the same layer through the composition process, the second touch electrodes 14 are connected with the bridge electrode 15 through the conductive material in the via holes 18, and the second touch electrodes 14 are electrically connected through the via holes 18. The first touch electrode 13 and the second touch electrode 14 may be made of a metal material, such as one or more of silver (Ag), copper (Cu), aluminum (Al), and molybdenum (Mo), or an alloy material of the above metals, such as aluminum neodymium (AlNd) or molybdenum niobium (MoNb).

On the basis of the structure formed with the touch electrode, a light-emitting layer 16 film is coated and cured, and the light-emitting layer 16 has the functions of light emitting and planarization. The material of the light emitting layer 16 may include inorganic substances such as nitride SiNx including silicon or oxide SiOx of silicon, or organic substances such as various organic resins, for example, unsaturated polyester or acrylic type resin.

The above is an exemplary description and illustration of the display module according to the embodiments of the present invention, and other configurations of the display module and other operations of the manufacturing method thereof will be known to those skilled in the art, and will not be described in detail herein, and those skilled in the art can understand and apply the description of the prior art.

The embodiment of the invention also provides a display device, which adopts the display module provided by the embodiment of the invention, namely the display module in the display device comprises a substrate 1, a driving circuit layer 2, a light emitting layer 3, a packaging layer 4, a color conversion layer 8 and a light emitting layer 16 which are sequentially stacked, wherein a plurality of light emitting units 10 are arrayed in the light emitting layer 3; a color film 11, a shading block 12 and a bridge electrode 15 are arranged in the color conversion layer 8, the bridge electrode 15 at least covers the side wall of the shading block 12, the color film 11 is provided with a plurality of shading blocks which are arranged opposite to the light-emitting units 10 one by one, the shading block 12 is arranged between the adjacent color films 11, and a reflective surface 17 is formed at the part of the bridge electrode 15 covering the side wall of the shading block 12; the surface of one side, far away from the substrate 1, of the color conversion layer 8 is provided with a plurality of touch electrodes, the touch electrodes are arranged opposite to the shading blocks 12, and part of the touch electrodes are connected through the bridge electrodes 15.

The display device provided by the embodiment of the application can be as follows: any product or component with a display function, such as a liquid crystal panel, electronic paper, an Organic Light Emitting Diode (OLED) panel, an Active Matrix Organic Light Emitting Diode (AMOLED) panel, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, or a navigator. The display device disclosed in the embodiment of the present application includes the display module provided in the above embodiment, and therefore the display device having the display module also has all the above technical effects, which are not described in detail herein. Other configurations, principles and manufacturing methods of the display module and the display device will be known to those skilled in the art and will not be described in detail herein.

Some embodiments in this specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. The utility model provides a display module assembly which characterized in that, includes substrate, drive circuit layer, luminescent layer, encapsulated layer, colour conversion layer and the light-emitting layer that stacks gradually the setting, wherein:

a plurality of light-emitting units are arrayed in the light-emitting layer;

a color film, a shading block and a bridge electrode at least covering the side wall of the shading block are arranged in the color conversion layer, the color film is provided with a plurality of bridge electrodes, the bridge electrodes are opposite to the light-emitting units one by one, the shading blocks are arranged between the adjacent color films, and the bridge electrode covers the side wall of the shading block to form a reflecting surface;

the surface of one side, far away from the substrate, of the color conversion layer is provided with a plurality of touch electrodes, the touch electrodes are arranged opposite to the shading blocks, and part of the touch electrodes are connected through the bridge electrodes.

2. The display module according to claim 1, wherein a surface of the color film on a side away from the substrate is in bonded connection with the light-emitting layer, and a refractive index of the light-emitting layer is greater than a refractive index of the color film.

3. The display module of claim 2, wherein an interface between the color film and the light emitting layer comprises a plane parallel to the substrate.

4. The display module of claim 2, wherein an interface between the color filter and the light emitting layer comprises a curved surface protruding away from the substrate.

5. The display module of claim 1,

the light reflecting surface is a plane facing the light emitting layer; or

The light reflecting surface is a curved surface facing the light emitting layer; or

The light reflecting surface is a plane perpendicular to the substrate.

6. The display module according to claim 1, wherein the bridge electrode covers at least a sidewall and a top of the light shielding block, and a cross-sectional shape of a portion of the bridge electrode covering the light shielding block is arc-shaped, trapezoid-shaped or rectangular.

7. The display module according to any one of claims 1 to 6, wherein the light emitting layer includes a first light emitting layer and a second light emitting layer, the first light emitting layer covers a surface of the color film on a side away from the substrate, the second light emitting layer covers a side of the first light emitting layer away from the substrate, and a refractive index of the color film, a refractive index of the first light emitting layer, and a refractive index of the second light emitting layer increase in sequence.

8. The display module of claim 7, wherein an interface between the first light extraction layer and the second light extraction layer comprises a plane parallel to the substrate.

9. The display module according to claim 7, wherein an interface between the first light emitting layer and the second light emitting layer comprises a curved surface protruding in a direction away from the substrate.

10. A display device comprising the display module according to any one of claims 1 to 9.

11. A method for manufacturing a display module according to any one of claims 1 to 9, comprising the steps of:

sequentially manufacturing a driving circuit layer, a light emitting layer and a packaging layer on a substrate;

preparing the shading block, the bridge electrode and the color film on the packaging layer to form the color conversion layer;

and forming a touch electrode on the surface of one side of the color conversion layer, which is far away from the substrate, and covering the light emitting layer.

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