Display module, manufacturing method thereof and display device

Abstract

The application discloses a display module, a manufacturing method thereof and a display device. The display module comprises a first display area and a second display area. The first display area is provided with a light emitting device layer, and the second display area is provided with a photosensitive structure below. The light emitting device layer forms an opening corresponding to the position of the second display area to avoid the photosensitive structure. The edge of the light emitting device layer close to the second display area is provided with a three-dimensional pixel structure, and the light of the three-dimensional pixel structure is obliquely incident into the second display area to make the second display area display. The embodiment of the application can realize full-screen display of the display device without affecting the photosensitive effect of the photosensitive structure.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a display module, its manufacturing method, and a display device. Background Technology

[0002] With the development of display technology, the design of display devices is increasingly trending towards high screen-to-body ratios. Due to the light-gathering requirements of front-facing photosensitive structures such as cameras, designating the photosensitive area as a non-display area ensures light transmittance at the photosensitive structure, but this prevents the display device from achieving a full-screen display. To enable the portion of the photosensitive structure to be used for image display, existing technologies offer the following solutions: such as... Figure 1 As shown, pixel units 02 are set in the area 010 corresponding to the photosensitive structure 01, and the pixel density of the area 010 corresponding to the photosensitive structure 01 is set to be sparser than the pixel density of the normal display area 020. However, the presence of pixel units 02 will cause a decrease in the light transmittance of the area 010 corresponding to the photosensitive structure 01, affecting the light-sensing effect of the photosensitive structure 01. Therefore, existing display devices cannot achieve full-screen display without affecting the light-sensing effect of the photosensitive structure 01. Summary of the Invention

[0003] This invention provides a display module and its manufacturing method, as well as a display device, to achieve full-screen display of the display device without affecting the photosensitive effect of the photosensitive structure.

[0004] To achieve the above technical objectives, the embodiments of the present invention provide the following technical solutions:

[0005] A display module includes: a first display area and a second display area;

[0006] The first display area is provided with a light-emitting device layer, and the second display area is provided with a photosensitive structure below it; the light-emitting device layer forms an opening corresponding to the position of the second display area to avoid the photosensitive structure;

[0007] The edge of the light-emitting device layer near the second display area is configured as a three-dimensional pixel structure, and the light from the three-dimensional pixel structure is obliquely incident into the second display area so that the second display area can display.

[0008] Optionally, the three-dimensional pixel structure includes: a plurality of light-emitting devices arranged in an array; the three-dimensional pixel structure is groove-shaped, and the plurality of light-emitting devices are arranged on the sidewalls of the groove;

[0009] Preferably, the recessed bottom of the three-dimensional pixel structure forms an opening, and the photosensitive structure is located within the opening of the recessed bottom.

[0010] Optionally, the inclination angle of the sidewall of the groove is greater than 0° and less than 90°.

[0011] Preferably, the vertical light emitted by the light-emitting device arranged on the side wall of the groove enters the second display area.

[0012] Optionally, the first display area further comprises a planar pixel structure, and the planar pixel structure surrounds the stereoscopic pixel structure.

[0013] The pixel density of the stereoscopic pixel structure is greater than the pixel density of the planar pixel structure.

[0014] Optionally, the first display area is further provided with an array layer, and the shape of the array layer matches the shape of the light-emitting device layer.

[0015] Optionally, the array layer and the film layer in the light-emitting device layer are both flexible film layers.

[0016] Alternatively, the array layer and the film layer in the light-emitting device layer are both rigid film layers.

[0017] Optionally, the light-sensing structure comprises at least one of a camera and a fingerprint identification module.

[0018] Correspondingly, the application further provides a manufacturing method of a display module, which is suitable for the display module provided by any of the embodiments of the application, and the manufacturing method comprises the following steps.

[0019] forming the light-emitting device layer in the first display area, the light-emitting device layer corresponding to the position of the second display area forms an opening to avoid the light-sensing structure, and the stereoscopic pixel structure is formed at the edge of the light-emitting device layer close to the second display area;

[0020] forming the light-sensing structure in the second display area, and the light-sensing structure is located in the opening.

[0021] Optionally, the manufacturing method of the stereoscopic pixel structure specifically comprises the following steps.

[0022] providing a stereoscopic support mold;

[0023] forming the stereoscopic pixel structure on the stereoscopic support mold;

[0024] Alternatively, the manufacturing method of the stereoscopic pixel structure specifically comprises the following steps.

[0025] adopting a flexible material to manufacture a planar pixel structure;

[0026] performing a stereoscopic deformation operation on the planar pixel structure to form the stereoscopic pixel structure.

[0027] Accordingly, the present invention also provides a display device, characterized in that it includes: a display module as provided in any embodiment of the present invention.

[0028] In the display module provided by this invention, a light-emitting device layer is disposed in a first display area, and a photosensitive structure is disposed in a second display area. An opening is formed in the light-emitting device layer at the position corresponding to the second display area, and the edge of the light-emitting device layer near the second display area is configured as a non-planar three-dimensional pixel structure. This configuration allows, on the one hand, the opening of the light-emitting device layer in the second display area to bypass the photosensitive structure, enabling unobstructed transmission of external light to the photosensitive structure, ensuring the light transmittance of the second display area and thus guaranteeing the light-gathering effect of the photosensitive structure. On the other hand, the three-dimensional pixel structure allows light to enter the second display area obliquely, enabling the second display area to display an image, which is beneficial for achieving a full-screen display. Furthermore, the emitted light from the three-dimensional pixel structure has a different transmission direction than the external light, preventing interference and allowing the three-dimensional pixel structure and the photosensitive structure to work simultaneously without interference. Therefore, compared to the prior art, this invention can achieve a full-screen display of the display device without affecting the light-sensing effect of the photosensitive structure.

[0029] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of an existing display module;

[0032] Figure 2 This is a schematic diagram of the structure of a display module provided in an embodiment of the present invention;

[0033] Figure 3 It is a kind of along Figure 2 Schematic diagram of the cross-sectional structure of B-B';

[0034] Figure 4 It is another kind of... Figure 2 Schematic diagram of the cross-sectional structure of B-B';

[0035] Figure 5 It is another kind of... Figure 2 Schematic diagram of the cross-sectional structure of B-B';

[0036] Figure 6 is another cross-sectional structure along Figure 2 is a cross-sectional structure along B-B' in FIG.

[0037] Figure 7 is a flowchart of a manufacturing method of a display module according to an embodiment of the present application;

[0038] Figure 8 is a flowchart of a manufacturing method of a stereoscopic pixel structure according to an embodiment of the present application;

[0039] Figure 9 is a flowchart of another manufacturing method of a stereoscopic pixel structure according to an embodiment of the present application. DETAILED DESCRIPTION

[0040] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0041] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. 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 that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0042] The embodiments of the present application provide a display module. Figure 2 is a structural schematic diagram of a display module according to an embodiment of the present application; Figure 3 is a cross-sectional structure along Figure 2 is a cross-sectional structure along B-B' in FIG. Figure 2 and Figure 3 The display module includes a first display area A1 and a second display area A2. Exemplarily, the first display area A1 can be as shown in FIG. Figure 2The second display area A2 is also surrounded by the first display area A1. The cross-sectional shape of the second display area A2 can be circular, drop-shaped, square, other polygonal or irregular pattern, etc. The cross-sectional shape of the first display area A1 can be a square with a hole in the middle or U-shaped, etc. The first display area A1 is provided with a light emitting device layer 10, and the second display area A2 is provided below a light sensing structure 40. The light emitting device layer 10 forms an opening corresponding to the position of the second display area A2 to avoid the light sensing structure 40. Among them, the edge of the light emitting device layer 10 close to the second display area A2 is provided as a three-dimensional pixel structure 11, and the light of the three-dimensional pixel structure 11 is obliquely incident into the second display area A2 to make the second display area A2 display. Among them, the three-dimensional pixel structure 11 of the second display area A2 is different from the pixel structure of the first display area A1, and the plurality of light emitting devices in the three-dimensional pixel structure 11 are arranged in a non-planar manner, showing a three-dimensional spatial arrangement structure.

[0043] Among them, the light sensing structure 40 refers to a structure that can sense external light and respond, such as a camera and a fingerprint identification module. The light sensing structure 40 is sensitive to external light, so the light transmittance of the area where the light sensing structure 40 is located greatly affects the accuracy of the work of the light sensing structure 40. The second display area A2 is different from the first display area A1, and the second display area A2 is used to set the light sensing structure 40, so in the second display area A2, the setting of the film layer structure needs to make the penetration of external light stronger, and the light incident into the light sensing structure 40 is not blocked by the film layer, so that the light sensing structure 40 works. The light emitting device layer 10 is only arranged in the first display area A1, and an opening is formed in the second display area A2, which can effectively avoid the shielding of the light emitting device layer 101 to the light incident into the light sensing structure 40, so that the external light is not blocked and transmitted to the light sensing structure 40, ensuring the light sensing effect of the light sensing structure 40.

[0044] Exemplarily, the light emitting device layer 10 includes a planar pixel structure 12 and a three-dimensional pixel structure 11. The planar pixel structure 12 is the main part of the light emitting device layer 10, which is arranged around the three-dimensional pixel structure 11 and is used to provide a display picture to the first display area A1. The three-dimensional pixel structure 11 is the edge part of the light emitting device layer 10 close to the second display area A2, which is arranged around the second display area A2 and is used to provide a display picture to the second display area A2.

[0045] The light emitting device layer 10 is arranged as a stereoscopic pixel structure 11 near the edge of the second display area A2, which means that the stereoscopic pixel structure 11 is not in the same plane as the planar pixel structure 12, the surface of the stereoscopic pixel structure 11 has a certain inclination angle with the surface of the planar pixel structure 12, and the closer to the second display area A2, the greater the distance between the stereoscopic pixel structure 11 and the planar pixel structure 12. In this way, the stereoscopic pixel structure 11 has an inclined light emitting surface. And because the light emitted by the light emitting device 101 is emitted vertically to the inclined surface, the light emitted by the stereoscopic pixel structure 11 can be obliquely incident into the second display area A2 relative to the planar pixel structure 12, so that the stereoscopic pixel structure 11 arranged in the first display area A1 can be used to provide the display picture of the second display area A2. Specifically, in the display module, a film layer structure such as a polarizing plate and a cover plate is further arranged above the light emitting device layer 10, Figure 2 The cover plate 30 is exemplarily shown in the middle, which covers the first display area A1 and the second display area A2, and the upper surface of the cover plate 30 can serve as the light emitting surface of the display module. The light emitted by the stereoscopic pixel structure 11 can be irradiated to the area of the cover plate 30 corresponding to the second display area A2, so that the second display area A2 displays a picture.

[0046] Exemplarily, the width, thickness and inclination angle of the stereoscopic pixel structure 11 can be determined according to factors such as the area of the second display area A2, the distance between the light emitting device layer 10 and the light emitting surface of the display module, and the thickness limitation condition of the display module.

[0047] It should be noted that the external light is transmitted to the photosensitive structure 40 along a direction perpendicular to the cover plate 30, and the light emitted by the stereoscopic pixel structure 11 is transmitted to the second display area A2 along a direction not perpendicular to the cover plate 30, and the transmission directions of the two kinds of light are not the same, so the light emitted by the stereoscopic pixel structure 11 and the external light do not interfere with each other and affect each other; the photosensitive structure 40 can sense the external light while the display module displays a picture.

[0048] The display module provided by the embodiment of the present application is characterized in that the light-emitting device layer 10 is arranged in the first display area A1, and the light-sensing structure 40 is arranged in the second display area A2; the light-emitting device layer 10 is formed with an opening corresponding to the second display area A2, and the edge of the light-emitting device layer 10 close to the second display area A2 is arranged as a non-planar three-dimensional pixel structure 11. In this way, on the one hand, the opening of the light-emitting device layer 10 in the second display area A2 can avoid the light-sensing structure 40, so that external light can be transmitted to the light-sensing structure 40 without any obstruction, thereby ensuring the light transmittance of the second display area A2 and further ensuring the light-sensing effect of the light-sensing structure 40. On the other hand, the arrangement of the three-dimensional pixel structure 11 enables the light to be obliquely incident on the second display area A2, so that the second display area A2 can display a picture, which is conducive to realizing full-screen display. Moreover, the transmission directions of the light emitted by the three-dimensional pixel structure 11 and the external light are different, and the two directions do not interfere with each other, so that the three-dimensional pixel structure 11 and the light-sensing structure 40 can work simultaneously without interfering with each other. Therefore, compared with the prior art, the embodiment of the present application can realize full-screen display of the display device without affecting the light-sensing effect of the light-sensing structure 40.

[0049] On the basis of the above-mentioned embodiments, optionally, the light-sensing structure 40 can be at least one of a camera and a fingerprint identification module. Taking the display device as a mobile phone and the light-sensing structure 40 as a camera as an example, the position occupied by the camera is the second display area, and the position occupied by the camera itself has no film layer structure such as the light-emitting device layer 10. Therefore, the mobile phone does not affect the light-sensing of the camera when taking a picture on the front side. At the same time, by arranging the three-dimensional pixel structure around the position occupied by the camera, the light emitted by the three-dimensional pixel structure is obliquely incident on the position occupied by the camera from the periphery of the position occupied by the camera, so that the position occupied by the camera can display a picture. Therefore, for the display module, the present embodiment can display comprehensively and does not affect the front shooting function.

[0050] Continuing to refer to Figures 2-3 On the basis of the above-mentioned embodiments, optionally, the light-emitting device layer 10 includes a planar pixel structure 12 and a three-dimensional pixel structure 11. The planar pixel structure 12 is arranged around the three-dimensional pixel structure 11. The planar pixel structure 12 and the three-dimensional pixel structure 11 each include an array of light-emitting devices 101. The light-emitting devices 101 in the planar pixel structure 12 and the three-dimensional pixel structure 11 can be light-emitting devices with the same structure, which can be driven by the same driving mode.

[0051] Specifically, for the planar pixel structure 12, all the light-emitting devices 101 contained therein are arrayed on the same horizontal plane, and each light-emitting device 101 has no height difference in the thickness direction of the display module, so as to ensure that the transmission direction and the transmission path length of the light emitted by each light-emitting device 101 in the planar pixel structure 12 are the same, which is conducive to ensuring the display uniformity of the first display area A1.

[0052] For the stereoscopic pixel structure 11, the stereoscopic pixel structure 11 is in a groove shape, the plurality of light emitting devices 101 are arranged on the side wall of the groove, the groove-shaped bottom of the stereoscopic pixel structure 11 forms an opening, and the photosensitive structure 40 is located in the opening of the groove-shaped bottom. That is, in the stereoscopic pixel structure 11, the light emitting devices 101 are arrayed on an inclined surface that is not parallel to the planar pixel structure 12, and the closer to the second display area A2, the greater the distance between the light emitting device 101 and the planar pixel structure 12, that is, the closer to the second display area A2, the greater the horizontal distance and the vertical distance between the light emitting device 101 and the planar pixel structure 12 close to the edge of the stereoscopic pixel structure 11. In this way, the surface of the stereoscopic pixel structure 11 and the surface of the planar pixel structure 12 form a certain angle, so that the transmission direction of the outgoing light of each light emitting device 101 in the stereoscopic pixel structure 11 is different from the transmission direction of the outgoing light of each light emitting device 101 in the planar pixel structure 12, and the outgoing light of each light emitting device 101 in the stereoscopic pixel structure 11 is transmitted non-perpendicularly to the surface of the planar pixel structure 12, and can be obliquely incident into the second display area A2.

[0053] Exemplarily, the side wall of the groove of the stereoscopic pixel structure 11 can be a plane or a curved surface. When the side wall of the groove is a curved surface, the convex direction of the curved surface can be towards the second display area A2, or can be away from the second display area A2, which can be set according to actual needs. When the side wall of the groove is a plane, the transmission directions of the outgoing light of each light emitting device 101 in the stereoscopic pixel structure 11 are the same, and in the driving design, it can not be necessary to consider the influence of the light emitting device light exit angle on the picture, which is beneficial to simplify the calculation process of the driving data of each light emitting device 101. In the light emitting device layer, the junction of the groove in the stereoscopic pixel structure 11 and the planar pixel structure 12 can be smoothly connected through a curved surface.

[0054] When the side wall of the groove of the stereoscopic pixel structure 11 is a plane, the side wall of the groove has an inclination angle a in the range of greater than 0° and less than 90°, so as to ensure that the light emitted by each light emitting device 101 on the side wall of the groove can be obliquely incident into the second display area A2. It should be noted that the inclination angle a of the side wall of the groove should not be too large or too small; when the inclination angle a of the side wall of the groove is close to 0°, the stereoscopic pixel structure 11 approaches a planar pixel structure, and the light generated thereby propagates in a direction close to being perpendicular to the plane in which the cover plate 30 lies. Due to the distance between the cover plate 30 and the light emitting device layer 10 in the display module thickness, most of the light generated by the stereoscopic pixel structure 11 is still located in the first display area A1 when transmitted to the cover plate 30, and there are very few light rays that can obliquely enter the second display area A2 and be perceived by the human eye. When the inclination angle a of the side wall of the groove is close to 90°, the light generated by the stereoscopic pixel structure 11 propagates in a direction close to being parallel to the plane in which the cover plate 30 lies. Due to the size of the opening, most of the light is transmitted to the side of the side wall of the groove opposite the light emitting position, and cannot be emitted from the display module. Therefore, there are still very few light rays that can obliquely enter the second display area A2 and be perceived by the human eye. Therefore, the inclination angle a of the side wall of the groove can be selected as an angle value in the middle range of the above range; for example, the inclination angle a of the side wall of the groove can be 40°, 50°, or 60°.

[0055] Figure 4 is another along Figure 2 The cross-sectional structure of B-B' is shown in FIG. 6. Referring to Figure 4 On the basis of the above-mentioned embodiments, the pixel density of the stereoscopic pixel structure 11 can be greater than the pixel density of the planar pixel structure 12. In this embodiment, the planar pixel structure 12 is arranged parallel to the horizontal plane, and therefore the vertical light emitted by each light emitting device 101 in the planar pixel structure 12 is all incident into the first display area A1 to form the display picture of the first display area A1. Correspondingly, the vertical light emitted by the light emitting device 101 arranged on the side wall of the groove is incident into the second display area A2; the vertical light emitted by each light emitting device 101 in the stereoscopic pixel structure 11 can be arranged to cover as much as possible the part of the light emitting surface of the display module located in the second display area A2, and the vertical light emitted by the light emitting device 101 is used to form the display picture of the second display area A2, so as to ensure that the light intensity and color of the display picture of the second display area A2 are as close as possible to the target picture, and the display deviation between the second display area A2 and the first display area A1 is reduced.

[0056] On the basis of the above-mentioned embodiments, the pixel density of the stereoscopic pixel structure 11 can be greater than the pixel density of the planar pixel structure 12. In this embodiment, the planar pixel structure 12 is arranged parallel to the horizontal plane, and therefore the vertical light emitted by each light emitting device 101 in the planar pixel structure 12 is all incident into the first display area A1 to form the display picture of the first display area A1. Correspondingly, the vertical light emitted by the light emitting device 101 arranged on the side wall of the groove is incident into the second display area A2; the vertical light emitted by each light emitting device 101 in the stereoscopic pixel structure 11 can be arranged to cover as much as possible the part of the light emitting surface of the display module located in the second display area A2, and the vertical light emitted by the light emitting device 101 is used to form the display picture of the second display area A2, so as to ensure that the light intensity and color of the display picture of the second display area A2 are as close as possible to the target picture, and the display deviation between the second display area A2 and the first display area A1 is reduced. Figure 4As shown, taking the display picture received on the cover plate 30 as an example, for the planar pixel structure 12, the light of the light emitting device 101 propagates perpendicularly to the cover plate 30, and thus in the display picture of the first display area A1, the interval L12 of the display pictures of adjacent light emitting devices is equal to the interval L11 of the adjacent light emitting devices 101. That is, the display density of the first display area A1 is the same as the pixel density of the planar pixel structure 12. For the stereoscopic pixel structure 11, the light of the light emitting device 101 does not propagate perpendicularly to the cover plate 30, and thus in the display picture of the second display area A2, the interval L22 of the display pictures of adjacent light emitting devices is greater than the interval L21 of the adjacent light emitting devices 101. That is, the display density of the second display area A2 is less than the pixel density of the stereoscopic pixel structure 11. Therefore, the pixel density of the stereoscopic pixel structure 11 is set to be large, which is beneficial to make more light irradiate on the second display area A2, increase the display density of the second display area A2, and make the picture displayed by the second display area A2 clearer and more realistic. Exemplarily, the pixel density of the planar pixel structure 12 and the stereoscopic pixel structure 11 can be adjusted so that the actual display densities of the first display area A1 and the second display area A2 are equal, so as to eliminate the display deviation of the first display area A1 and the second display area A2 and improve the uniformity of the display picture of the whole display module.

[0057] Figure 5 is yet another along Figure 2 the cross-sectional structure of B-B' in FIG. 1C. Referring to Figure 5 On the basis of the above-mentioned embodiments, the display module further comprises: an array layer 20 arranged on the first display area A1, the shape of the array layer 20 matches the shape of the light emitting device layer 10, and the array layer 20 is arranged on the side of the light emitting device layer 10 away from the light emitting surface. The array layer 20 can comprise a plurality of pixel driving circuits composed of thin film transistors and the like, each pixel driving circuit corresponding to each light emitting device 101, for driving the light emitting device 101 to emit light.

[0058] Further, each film layer in the array layer 20 and the light emitting device layer 10 can be a flexible film layer, so that the shape of the stereoscopic pixel structure 11 is easy to change, and the display module has bendability. Alternatively, each film layer in the array layer 20 and the light emitting device layer 10 can be a rigid film layer, so that the structure of the shaped stereoscopic pixel structure 11 is stable, and the abnormal display picture caused by the deformation of the stereoscopic pixel structure 11 is avoided. Exemplarily, different film layers of different properties can be made by different preparation processes, which can be set according to actual needs, and is not limited herein.

[0059] Continuing to refer to Figure 5On the basis of each of the above embodiments, optionally, on the side of the array layer 20 away from the light-emitting device layer 10, the display module further comprises: a substrate 50 and a buffer layer 60 which are arranged in a stack, to realize support and buffering for the array layer 20 and the film layers thereon.

[0060] With reference to Figure 5 On the basis of each of the above embodiments, optionally, between the light-emitting device layer 10 and the cover plate 30, the display module further comprises: an encapsulation layer 70 and a polarizer 80 which are arranged in a stack. The encapsulation layer 70 covers the light-emitting device layer 10, i.e. covers all the light-emitting devices in the planar pixel structure 12 and the stereoscopic pixel structure 11, to protect the light-emitting devices from water and oxygen erosion. The polarizer 80 and the cover plate 30 can be bonded by optical adhesive. For the groove part surrounded by the stereoscopic pixel structure 11, transparent material can be filled or no filling is performed. Exemplarily, between the light-emitting device layer 10 and the cover plate 30, the display module can further comprise a film layer related to the touch function.

[0061] The above embodiments exemplarily give the structure that the bottom surface of the substrate 50 is parallel to the horizontal plane, but this is not a limitation on the present application. In other embodiments, as shown in Figure 6 The shapes of the film layers below the light-emitting device layer 10, i.e. the array layer 20, the buffer layer 60 and the substrate 50, can all match the shape of the light-emitting device layer 10. In this way, more accommodation space can be provided for other functional devices in the display module and the display device, which is beneficial to the thinning of the display module. Specifically, in the first display area A1, the space below the substrate 50 can be used to arrange devices such as a main board, a controller or a battery.

[0062] The present application also provides a manufacturing method of a display module, which is used to manufacture the display module provided by any of the embodiments of the present application, and has corresponding beneficial effects. Figure 7 is a flowchart of a manufacturing method of a display module provided by an embodiment of the present application. With reference to Figure 7 The manufacturing method of the display module comprises:

[0063] S110, forming a light-emitting device layer in the first display area, the light-emitting device layer forming an opening corresponding to the position of the second display area to avoid the light-sensitive structure; and forming a stereoscopic pixel structure at the edge of the light-emitting device layer close to the second display area.

[0064] The first display area is arranged around the second display area. Forming the stereoscopic pixel structure at the edge of the light-emitting device layer close to the second display area means that the edge of the light-emitting device layer close to the second display area is inclined, and the distance between the stereoscopic pixel structure and the light-out surface of the display module is controlled to be larger as being closer to the second display area, so that the stereoscopic pixel structure has an inclined light-emitting surface, and the light emitted by the stereoscopic pixel structure can be obliquely incident into the second display area to form a display picture of the second display area. Exemplarily, the width, thickness and inclination angle of the stereoscopic pixel structure can be determined according to the area of the second display area, the distance between the light-emitting device layer and the light-out surface of the display module, and the thickness limitation of the display module.

[0065] S120, forming a light-sensing structure in the second display area, the light-sensing structure being located in the opening.

[0066] The light-sensing structure includes at least one of a camera and a fingerprint identification module. The light-sensing structure can be arranged below the light-emitting device layer to avoid hindering the propagation of the emergent light of the stereoscopic pixel structure in the opening towards the top cover plate of the display module.

[0067] The manufacturing method of the display module provided by the embodiment of the present application includes the following steps: preparing a light-emitting device layer in a first display area, forming a light-sensing structure in a second display area, forming an opening in the light-emitting device layer at a position corresponding to the second display area, and arranging the edge of the light-emitting device layer close to the second display area as a non-planar stereoscopic pixel structure. In this way, on the one hand, the opening of the light-emitting device layer in the second display area can avoid the light-sensing structure, so that external light can be transmitted to the light-sensing structure without any hindrance, ensuring the light transmittance of the second display area and further ensuring the light-sensing effect of the light-sensing structure. On the other hand, the arrangement of the stereoscopic pixel structure enables the light to be obliquely incident into the second display area, so that the second display area can display a picture, which is conducive to realizing a full-screen display. Moreover, the transmission directions of the emergent light of the stereoscopic pixel structure and the external light are different, and the two directions do not interfere with each other, so that the stereoscopic pixel structure and the light-sensing structure can work simultaneously without interfering with each other. Therefore, compared with the prior art, the embodiment of the present application can realize a full-screen display of a display device without affecting the light-sensing effect of the light-sensing structure.

[0068] On the basis of the above-mentioned embodiments, before the light-emitting device layer is formed, the method further includes: forming an array layer in the first display area, wherein the shape of the array layer matches the shape of the light-emitting device; and the pixel driving circuit for driving the light-emitting device to emit light can be formed in the array layer.

[0069] On the basis of the above-mentioned embodiments, the manufacturing method of the stereoscopic pixel structure has various modes. In the following, possible manufacturing methods of the stereoscopic pixel structure are described in combination with the structures of the array layer and the light-emitting device layer.

[0070] Figure 8is a flowchart of a manufacturing method of a stereoscopic pixel structure provided by an embodiment of the present application. Referring to Figure 8 In an embodiment, the manufacturing method of the stereoscopic pixel structure comprises the following steps:

[0071] S210, providing a stereoscopic support mold 100.

[0072] The surface shape of the stereoscopic support mold 100 matches the shape of the light-emitting device layer. When the stereoscopic pixel structure of the light-emitting device layer is in a groove shape, the central region of the stereoscopic support mold 100 comprises a recessed part matching the groove shape.

[0073] S220, forming an array layer 20 on the stereoscopic support mold 100.

[0074] The array layer 20 can be composed of a metal layer and an insulating protective layer arranged in layers. The material of the metal layer can be aluminum, copper, titanium, molybdenum or silver, etc.; the insulating protective layer can be prepared by using silicon nitride or silicon oxide. Exemplarily, each functional film layer in the array layer 20 can be prepared by using deposition or evaporation process, etc.; the functional pattern required in each functional film layer can be realized by using mask lithography process.

[0075] S230, forming a light-emitting device layer 10 on the array layer 20, wherein the light-emitting device layer 10 comprises a planar pixel structure 12 and a stereoscopic pixel structure 11.

[0076] The light-emitting device layer 10 can comprise a first electrode layer, a light-emitting layer and a second electrode layer arranged in layers. The material of the first electrode layer and the second electrode layer can be aluminum, copper, titanium, molybdenum or silver, etc. metal material, or other non-metal material with good conductivity; the light-emitting layer can be composed of organic light-emitting material. Exemplarily, each electrode layer can be prepared by using deposition or evaporation process, etc., and the light-emitting layer can be prepared by using evaporation process; the functional pattern required in each functional film layer can be realized by using mask lithography process; finally, the light-emitting device layer containing a plurality of array-arranged light-emitting devices 101 is formed. The planar pixel structure 12 and the stereoscopic pixel structure 11 can be prepared in the same process.

[0077] The embodiment completes the manufacturing of the stereoscopic pixel structure through S210-S230. Exemplarily, in the preparation process, the array layer 20 and the light-emitting device layer 10 can adopt flexible film layer or rigid film layer.

[0078] Figure 9 is a flowchart of another manufacturing method of a stereoscopic pixel structure provided by an embodiment of the present application. Referring to Figure 9 In an embodiment, the manufacturing method of the stereoscopic pixel structure comprises the following steps:

[0079] S310, preparing the array layer 20 on the workbench 100.

[0080] In this step, the array layer 20 formed is a flat non- profile structure. In this embodiment, after the array layer 20 and the light emitting device layer are both prepared, the overall laminated structure is deformed to obtain a three-dimensional pixel structure. The array layer 20 is prepared by using a flexible material, so as to facilitate the formation of the three-dimensional pixel structure.

[0081] S320, forming the light emitting device layer 10 on the array layer 20.

[0082] The light emitting device layer 10 formed in this step is a flat non- profile structure, that is, the laminated structure in this step presents a planar pixel structure as a whole. It should be noted that the planar pixel structure includes both the structure part which remains flat after deformation and the structure part which becomes three-dimensional after deformation. The light emitting device layer 10 is prepared by using a flexible material, so as to facilitate the formation of the three-dimensional pixel structure.

[0083] S330, performing a three-dimensional deformation operation on the planar pixel structure to form a three-dimensional pixel structure.

[0084] In this step, the array layer 20 formed is a flat non- profile structure. In this embodiment, after the array layer 20 and the light emitting device layer are both prepared, the overall laminated structure is deformed to obtain a three-dimensional pixel structure. The array layer 20 is prepared by using a flexible material, so as to facilitate the formation of the three-dimensional pixel structure.

[0085] This embodiment realizes another method for manufacturing a three-dimensional pixel structure through S310-S330, without the need to provide a profiled three-dimensional support mold, which can improve the versatility of the display module manufacturing method. In this embodiment, the array layer 20 and the light emitting device layer 10 are both prepared and formed on a horizontal plane, which can effectively simplify the manufacturing process for forming each film layer and reduce the manufacturing difficulty.

[0086] The embodiment of the present application also provides a display device including the display module provided by any of the embodiments of the present application, which has corresponding beneficial effects. Exemplarily, the display device can be a display device such as a mobile phone or a tablet computer.

[0087] It should be understood that the various forms of flow shown above can be reordered, added or deleted steps. For example, the steps described in the present application can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions of the present application can be achieved, which are not limited herein.

[0088] The above detailed description does not limit the scope of the application. Various modifications, combinations, sub-combinations and alternatives can be made to the detailed description. Any modification, equivalent replacement and improvement etc. made within the spirit and principle of the application shall be included in the scope of the application.

Claims

1. A display module, characterized by Comprising: a first display area and a second display area; the first display area is provided with a light emitting device layer, and the second display area is provided with a light sensing structure below; the light emitting device layer forms an opening corresponding to the position of the second display area to avoid the light sensing structure; wherein the edge of the light emitting device layer close to the second display area is provided as a three-dimensional pixel structure, the light of the three-dimensional pixel structure is obliquely incident into the second display area to make the second display area display; the light emitting device layer includes a planar pixel structure and the three-dimensional pixel structure, and the planar pixel structure is arranged around the three-dimensional pixel structure; the three-dimensional pixel structure and the planar pixel structure are not in the same plane, and the three-dimensional pixel structure has an inclined light emitting surface.

2. The display module of claim 1, wherein, The three-dimensional pixel structure comprises: a plurality of light emitting devices arranged in an array; the three-dimensional pixel structure is in a groove shape, and the plurality of light emitting devices are arranged on the side wall of the groove.

3. The display module of claim 2, wherein, The groove-shaped bottom of the three-dimensional pixel structure forms an opening, and the light sensing structure is located in the opening of the groove-shaped bottom.

4. The display module of claim 2, wherein, The inclination angle of the side wall of the groove ranges from greater than 0° to less than 90°.

5. The display module of claim 2, wherein, The vertical light emitted by the light emitting device arranged on the side wall of the groove is incident into the second display area.

6. The display module of claim 1, wherein, The pixel density of the three-dimensional pixel structure is greater than the pixel density of the planar pixel structure.

7. The display module of claim 1, wherein, The first display area is further provided with an array layer, and the shape of the array layer matches the shape of the light emitting device layer.

8. The display module of claim 7, wherein, The film layer in the array layer and the light emitting device layer is a flexible film layer. Alternatively, the film layer in the array layer and the light emitting device layer is a rigid film layer.

9. The display module of claim 1, wherein, The light sensing structure comprises: at least one of a camera and a fingerprint identification module.

10. A manufacturing method of a display module, characterized by comprising: The display module is suitable for any one of claims 1-9; the manufacturing method comprises: forming the light emitting device layer in the first display area, the light emitting device layer forms an opening corresponding to the position of the second display area to avoid the light sensing structure; and forming the three-dimensional pixel structure close to the edge of the second display area of the light emitting device layer; forming the light sensing structure in the second display area, and the light sensing structure is located in the opening.

11. The method of claim 10, wherein the display module is a liquid crystal display module. The manufacturing method of the three-dimensional pixel structure specifically comprises: providing a three-dimensional support mold; forming the three-dimensional pixel structure on the three-dimensional support mold; Alternatively, the manufacturing method of the three-dimensional pixel structure specifically comprises: using a flexible material to manufacture a planar pixel structure; performing a three-dimensional deformation operation on the planar pixel structure to form the three-dimensional pixel structure.

12. A display device comprising: Comprising: the display module according to any one of claims 1-9.

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