A display device, a display method and a manufacturing method thereof

Abstract

The present invention discloses a display device, a display method and a manufacturing method thereof. The display device includes a first display area corresponding to the under-screen sensor, and a second display area at least partially surrounding the first display area. The color filter layer includes a first color filter disposed in the first display area and a first light-transmitting opening disposed between the first color filters; the light-emitting layer includes a plurality of sub-pixel opening areas, and a convex structure area disposed between at least some adjacent two sub-pixel opening areas in the first display area. The convex structure area includes a plurality of first convex structures disposed on the driving circuit layer, and the orthographic projection of the convex structure area on the substrate at least partially covers the orthographic projection of the first light-transmitting opening on the substrate. The display device according to the embodiment of the present application can solve the problem of poor display in the area of the under-screen sensor in the prior art and effectively improve the display effect of the display device.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a display device, a display method, and a manufacturing method thereof. Background Art

[0002] Currently, organic light-emitting diode (OLED for short, full name: Organic Light-Emitting Diode) display devices are widely used in the development of new forms such as full-screen and foldable screens. For more integration and reduced thickness of the display device, the OLED display panel usually matches the under-screen sensor technology. However, there are cases of poor display, which affects the user experience. Summary of the Invention

[0003] To solve at least one of the above problems, a first embodiment of the present invention provides a display device, including a substrate, a driving circuit layer disposed on the substrate, a light-emitting layer and a color filter layer, and an under-screen sensor disposed on the side of the substrate away from the light-emitting side, characterized by including a first display area corresponding to the under-screen sensor, and a second display area at least partially surrounding the first display area, wherein

[0004] The color filter layer includes a first color filter disposed in the first display area and a first light-transmitting opening disposed between the first color filters;

[0005] The light-emitting layer includes a plurality of sub-pixel opening areas, and a convex structure area disposed at least partially between adjacent two sub-pixel opening areas in the first display area. The convex structure area includes a plurality of first convex structures disposed on the driving circuit layer. The orthographic projection of the convex structure area on the substrate at least partially covers the orthographic projection of the first light-transmitting opening on the substrate. The convex structure area is used to laterally reflect part of the light incident through the first light-transmitting opening through the first convex structures.

[0006] In a specific embodiment, the first convex structure is a convex lens, the diameter of the first convex structure is less than or equal to 10 μm, and the distance between adjacent two first convex structures is greater than or equal to 0 and less than or equal to one-fourth of the diameter of the first convex structure.

[0007] In a specific embodiment, in the first display area, a pixel defining layer of the light-emitting layer defines each sub-pixel opening area and the convex structure area.

[0008] In a specific embodiment, the pixel defining layer is a transparent material, and the first convex structure is disposed on the same layer as the pixel defining layer; or

[0009] The light-emitting layer further includes a transparent spacer layer disposed on the pixel defining layer, and the first convex structure is disposed on the same layer as the spacer layer.

[0010] In a specific embodiment, the pixel defining layer is made of a black material, the light-emitting layer further includes a transparent spacer layer disposed on the pixel defining layer, and the first convex structure is disposed on the same layer as the spacer layer.

[0011] In a specific embodiment, the black material transmits infrared light.

[0012] The color filter layer includes a second color filter disposed in the second display area and a black matrix disposed between the second color filters, and the black matrix includes a second light-transmitting opening.

[0013] The light-emitting layer includes a second convex structure disposed between adjacent sub-pixel openings in the second display area, and the orthographic projection of the second light-transmitting opening on the substrate falls within the orthographic projection of the second convex structure on the substrate.

[0014] The display device further includes an infrared sensor disposed on the side of the substrate away from the light-emitting side and corresponding to the second light-transmitting opening, and the orthographic projection of the second convex structure on the substrate falls within the orthographic projection of the infrared sensor on the substrate.

[0015] The second convex structure is configured to: transmit a first portion of the infrared light of the light incident through the second light-transmitting opening after being filtered by the pixel defining layer to the infrared sensor, and laterally reflect a second portion of the infrared light.

[0016] In a specific embodiment, in a direction perpendicular to the substrate, the second light-transmitting opening is coaxially disposed with the black matrix.

[0017] In a specific embodiment, the difference between the radius of the second convex structure and the hole radius of the second light-transmitting opening is:

[0018] a≥(3h*λ) / b;

[0019] Wherein, a is the difference between the radius of the second convex structure and the hole radius of the second light-transmitting opening, h is the distance from the side of the pixel defining layer away from the substrate to the side of the color filter layer close to the substrate, λ is the wavelength of infrared light, and b is the aperture of the second light-transmitting opening.

[0020] In a specific embodiment, the width of the black matrix between the second light-transmitting opening and the second color filter is:

[0021] If (d + a - g*tan2θ) is less than 2 and greater than -2:

[0022] c = Max[d + a, g * tan2θ], d ≥ (5h * λ) / e;

[0023] If (d + a - g * tan2θ) is greater than 2 or less than -2:

[0024] c = d + a, d ≥ (5h * λ) / e;

[0025] Wherein, c is the width of the black matrix between the second light-transmitting opening and the second color filter (the distance from one side edge of the second light-transmitting opening to the nearest second color filter), d is the distance from one side edge of the second convex structure to the nearest second color filter, g is the distance from the farthest point of the second convex structure from the substrate to the side of the color film layer close to the substrate, θ is the angle between the tangent of the incident light on the second convex structure and the side of the pixel defining layer away from the substrate, and θ is greater than or equal to 10 degrees and less than or equal to 70 degrees, and e is the width of the second color filter.

[0026] The second embodiment of the present invention provides a display method using the display device described in the first embodiment, including:

[0027] A first part of the light incident on the first light-transmitting opening in the first display area passes through the convex structure area to be transmitted to the under-screen sensor, and a second part of the incident light is laterally reflected by the first convex structure in the convex structure area.

[0028] In a specific embodiment, the pixel defining layer of the light-emitting layer is a black material, the black material transmits infrared light, the color film layer includes a second color film filter disposed in the second display area and a black matrix disposed between the second color film filters, the black matrix includes a second light-transmitting opening, the light-emitting layer includes a second convex structure disposed between adjacent sub-pixel opening intervals in the second display area, the orthographic projection of the second light-transmitting opening on the substrate falls within the orthographic projection of the second convex structure on the substrate, the display device further includes an infrared sensor disposed on the side of the substrate away from the light-emitting side corresponding to the second light-transmitting opening, the orthographic projection of the second convex structure on the substrate falls within the orthographic projection of the infrared sensor on the substrate, and the display method further includes:

[0029] The light incident on the second light-transmitting opening in the second display area is filtered by the pixel defining layer to filter out infrared light. A first part of the infrared light passes through the second convex structure and is transmitted to the infrared sensor, and a second part of the infrared light is laterally reflected by the second convex structure.

[0030] The third embodiment of the present invention provides a manufacturing method for manufacturing a display device as described in the first embodiment. The display device includes a first display area corresponding to the under-screen sensor and a second display area at least partially surrounding the first display area. The manufacturing method includes:

[0031] Form a driving circuit layer on a substrate;

[0032] Form a light-emitting layer on the driving circuit layer, including forming a plurality of sub-pixel opening areas on the driving circuit layer and forming a convex structure area between at least two adjacent sub-pixel opening areas in at least part of the first display area. The convex structure area includes a plurality of first convex structures disposed on the driving circuit layer;

[0033] Form a color filter layer on the light-emitting layer, including a first color filter on the first display area and a first light-transmitting opening between each first color filter. The positive projection of the convex structure area on the substrate at least partially covers the positive projection of the first light-transmitting opening on the substrate.

[0034] In a specific embodiment, forming the light-emitting layer on the driving circuit layer further includes:

[0035] Form a transparent pixel defining material layer on the driving circuit layer, and pattern the pixel defining material layer to form a pixel defining layer and the first convex structure; or

[0036] Form a transparent spacer material layer on the pixel defining layer, and pattern the spacer material layer to form a spacer layer and the first convex structure.

[0037] In a specific embodiment, the display device further includes an infrared sensor disposed on the side of the substrate away from the light-emitting side corresponding to the second light-transmitting opening,

[0038] Forming the light-emitting layer on the driving circuit layer further includes: forming a black pixel defining material layer on the driving circuit layer, patterning the pixel defining material layer to form a pixel defining layer, forming a transparent spacer material layer on the pixel defining layer, and patterning the spacer material layer to form the first convex structure in the first display area and a second convex structure between two adjacent sub-pixel opening areas in the second display area;

[0039] Forming the color film layer on the light-emitting layer further includes: forming a second color film filter in the second display area and a black matrix disposed between the second color film filters, the black matrix including a second light-transmitting opening, a positive projection of the second light-transmitting opening on the substrate falling within a positive projection of the second convex structure on the substrate, and a positive projection of the second convex structure on the substrate falling within a positive projection of the infrared sensor on the substrate.

[0040] The beneficial effects of the present invention are as follows:

[0041] In view of the existing problems, the present invention provides a display device, a method and a manufacturing method thereof. By providing a first light-transmitting opening located in the color film layer and a convex structure area located in the light-emitting layer in the first display area corresponding to the under-screen sensor, and using a plurality of first convex structures included in the convex structure area, part of the light incident through the first light-transmitting opening is laterally reflected by the first convex structures in the convex structure area, which can avoid the light incident through the first light-transmitting opening from being vertically reflected into the human eye, thereby solving the problem of poor display in the under-screen sensor area in the prior art, effectively improving the display effect of the display device. At the same time, the convex structure area has strong light-gathering properties, which further improves the recognition accuracy of the under-screen sensor and enhances the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0043] Figure 1 A plan view of the display device according to an embodiment of the present invention;

[0044] Figure 2 A cross-sectional view of the display device according to an embodiment of the present invention along line A-A;

[0045] Figure 3 A structural view of the first display area of the display device according to an embodiment of the present invention;

[0046] Figure 4 A plan view of the display device according to another embodiment of the present invention;

[0047] Figure 5 A cross-sectional view of the display device according to an embodiment of the present invention along line B-B;

[0048] Figure 6Schematic structural diagram of the second display area of the display device according to another embodiment of the present invention;

[0049] Figure 7 Schematic structural diagram of the second display area of the display device according to another embodiment of the present invention;

[0050] Figure 8 Schematic structural diagram of the second display area of the display device according to another embodiment of the present invention;

[0051] Figure 9 Schematic structural diagram of the second display area of the display device according to another embodiment of the present invention;

[0052] Figure 10 Schematic structural diagram of the second display area of the display device according to another embodiment of the present invention;

[0053] Figure 11 Schematic flow diagram of the manufacturing method of the display device according to an embodiment of the present invention. Detailed implementation manners

[0054] To more clearly illustrate the present invention, the present invention will be further described below in conjunction with preferred embodiments and the accompanying drawings. Similar components in the drawings are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not be used to limit the protection scope of the present invention.

[0055] It should be noted that the terms "on...", "formed on...", and "disposed on..." described herein may mean that one layer is directly formed or disposed on another layer, or may mean that one layer is indirectly formed or disposed on another layer, that is, there are other layers between the two layers. In this article, unless otherwise specified, the term "located on the same layer" means that two layers, components, members, elements, or parts can be formed by the same lithography process, and generally, these two layers, components, members, elements, or parts are formed of the same material. In this article, unless otherwise specified, the expression "lithography process" generally includes steps such as coating of photoresist, exposure, development, etching, and stripping of photoresist. The expression "one lithography process" means a process of forming a patterned layer, component, member, etc. using one mask.

[0056] In the prior art, in order to reduce the thickness of a display device, a color filter film and a black matrix structure are usually directly formed on a thin film encapsulation layer to replace a conventional polarizer, that is, a COE (Color Film On Encapsulation) structure is adopted. At the same time, an OLED display panel usually matches an under-screen sensor technology. In order to meet the requirements of the under-screen sensor technology, it is often necessary to remove the black matrix in the area corresponding to the under-screen sensor. However, after there is no black matrix to block it, when incident light irradiates the cathode, relatively strong reflected light will enter the human eye, resulting in an obvious visualization phenomenon in the area of the under-screen sensor.

[0057] In view of the above problems, an embodiment of the present invention provides a display device, Figure 1 which shows a plan schematic diagram of the display device, Figure 2 is Figure 1 a cross-sectional schematic diagram of the display device along line A-A in, that is, a cross-sectional schematic diagram of the first display area of the display device.

[0058] As Figure 1 and Figure 2 shown, the display device provided in this embodiment includes a substrate 10, a driving circuit layer 20, a light-emitting layer 30, and a color film layer 40 disposed on the substrate, and an under-screen sensor 3 disposed on the side of the substrate away from the light-emitting side, including a first display area 1 corresponding to the under-screen sensor, and a second display area 2 at least partially surrounding the first display area, where

[0059] the color film layer 40 includes a first color film filter 41 disposed in the first display area and a first light-transmitting opening 42 disposed between the first color film filters;

[0060] the light-emitting layer 30 includes a plurality of sub-pixel opening areas, and a convex structure area 31 disposed between at least some adjacent two sub-pixel opening areas in the first display area. The convex structure area includes a plurality of first convex structures 311 disposed on the driving circuit layer. The orthographic projection of the convex structure area on the substrate at least partially covers the orthographic projection of the first light-transmitting opening on the substrate. The convex structure area is used to laterally reflect part of the light incident through the first light-transmitting opening through the first convex structure.

[0061] In this embodiment, by providing a first light-transmitting opening located in the color filter layer and a convex structure region located in the light-emitting layer in the first display area corresponding to the under-screen sensor, and using the multiple first convex structures included in the convex structure region, part of the light incident through the first light-transmitting opening is laterally reflected by the first convex structures in the convex structure region, which can prevent the light incident through the first light-transmitting opening from being vertically reflected into the human eye, thereby solving the problem of poor display in the under-screen sensor region in the prior art, effectively improving the display effect of the display device. At the same time, the convex structure region has strong light-gathering properties, thereby further improving the recognition accuracy of the under-screen sensor and enhancing the user experience.

[0062] In a specific embodiment, taking the manufacture of the display device as an example for illustration, specifically:

[0063] A first display area corresponding to the under-screen sensor and at least a part of a second display area surrounding the first display area are formed on the substrate, specifically including:

[0064] First, a driving circuit layer is formed on the substrate. The driving circuit layer includes thin-film transistors, specifically including an active layer, a gate, a source electrode, and a drain electrode provided on the substrate.

[0065] Then, a light-emitting layer is formed on the driving circuit layer.

[0066] It further includes: forming an array of sub-pixel opening areas on the driving circuit layer, and forming a convex structure region between two adjacent sub-pixel opening areas in the first display area, the convex structure region including multiple first convex structures provided on the driving circuit layer.

[0067] Specifically, the light-emitting layer includes an anode and a light-emitting material formed in the sub-pixel opening areas, and a cathode covering the light-emitting material and the convex structure region.

[0068] Then, a color filter layer is formed on the light-emitting layer.

[0069] It further includes: a first color filter provided in the first display area and a first light-transmitting opening provided between the first color filters, and the positive projection of the convex structure region on the substrate at least partially covers the positive projection of the first light-transmitting opening on the substrate.

[0070] In this embodiment, a first part of the light incident through the first light-transmitting opening in the first display area passes through the first convex structures to be transmitted to the under-screen sensor, and a second part is laterally reflected by the first convex structures in the convex structure region, which can prevent the light incident through the first light-transmitting opening from being vertically reflected at the cathode and entering the human eye in the prior art, thereby solving the obvious visualization problem caused by the vertical reflection of the incident light in the under-screen sensor region in the prior art.

[0071] It should be noted that the present embodiment does not specifically limit the under-screen sensor, which may be a fingerprint recognition device for identifying fingerprint information, a medical detection device for detecting images, or other under-screen camera devices, and is not limited herein.

[0072] It should be noted that for display devices with different light-emitting directions, those skilled in the art make adaptive adjustments to the specific structure of the display device. Taking the design criterion of setting multiple first convex structures in the convex structure area corresponding to the first light-transmitting opening to laterally reflect the incident light to avoid the incident light being vertically reflected into the human eye as an example, it will not be elaborated herein.

[0073] In a specific embodiment, the first convex structure is a convex lens, the diameter of the first convex structure is less than or equal to 10 μm, and the distance between two adjacent first convex structures is greater than or equal to 0 and less than or equal to one-fourth of the diameter of the first convex structure.

[0074] In this embodiment, the first convex structure may be a convex lens with an arc surface. The diameter of the first convex structure is less than or equal to 10 μm. Two adjacent first convex structures may be closely arranged, that is, the distance is 0, or they may be arranged at intervals according to a first distance. Considering that if the distance between two adjacent first convex structures is too large, it is easy for some of the incident light to be reflected on the cathode and then enter the human eye. Therefore, when two adjacent first convex structures are arranged at intervals, the distance is less than or equal to one-fourth of the diameter of the first convex structure.

[0075] In order to further facilitate the design of each sub-pixel opening area and the convex structure area, in a specific embodiment, in the first display area, the pixel defining layer of the light-emitting layer defines each sub-pixel opening area and the convex structure area, that is, there is a pixel defining layer between each sub-pixel opening area and the convex structure area. That is to say, on the one hand, the pixel defining layer defines the morphology of the pixel opening area, for example, sets the shape of the pixel opening area as a quadrilateral, a circle or other patterns, and controls the aperture ratio of each sub-pixel. On the other hand, the convex structure area is defined so that the light incident from the first light-transmitting opening is laterally reflected on the first convex structure, thereby avoiding the display defects existing in the first display area in the prior art.

[0076] In an alternative embodiment, as Figure 3 shown, the pixel defining layer 33 is made of a transparent material and is used to define the convex structure area 31 and the sub-pixel opening area. The sub-pixel opening area includes an anode 321 and a light-emitting material 322, and the first convex structure 311 is arranged on the same layer as the pixel defining layer.

[0077] In a specific embodiment, taking the manufacture of the display device as an example for illustration, specifically:

[0078] Form a first display area corresponding to the under-screen sensor and a second display area at least partially surrounding the first display area on a substrate, specifically including:

[0079] First, form a driving circuit layer on the substrate. The driving circuit layer includes thin-film transistors, specifically including an active layer, a gate, a source, and a drain disposed on the substrate.

[0080] Then, form a light-emitting layer on the driving circuit layer.

[0081] Further include: forming an array of sub-pixel opening areas on the driving circuit layer, and forming a convex structure area between two adjacent sub-pixel opening areas in the first display area. The convex structure area includes a plurality of first convex structures disposed on the driving circuit layer, specifically including:

[0082] Form a transparent pixel definition material layer on the driving circuit layer, and pattern the pixel definition material layer to form a pixel definition layer and a plurality of first convex structures in the convex structure area of the first display area;

[0083] Then, form a color filter layer on the light-emitting layer.

[0084] Further include: a first color filter on the first display area and a first light-transmitting opening between each first color filter. The orthographic projection of the convex structure area on the substrate at least partially covers the orthographic projection of the first light-transmitting opening on the substrate. In this embodiment, the pixel definition layer and the first convex structure are formed in one manufacturing step through a mask, which not only solves the problem of poor display in the under-screen sensor area in the prior art, but also saves process steps and further reduces costs.

[0085] In another alternative embodiment, the pixel definition layer is a transparent material, and the light-emitting layer further includes a transparent spacer layer disposed on the pixel definition layer. The first convex structure is disposed on the same layer as the spacer layer.

[0086] Different from the above embodiment, forming a light-emitting layer on the driving circuit layer in this embodiment further includes: forming a transparent pixel definition material layer on the driving circuit layer, patterning the pixel definition material layer to form a pixel definition layer, forming a transparent spacer material layer on the pixel definition layer, patterning the spacer material layer to form a spacer layer and a plurality of first convex structures in the convex structure area of the first display area. In this embodiment, the spacer layer and the first convex structure are formed in one manufacturing step through a mask, which not only solves the problem of poor display in the under-screen sensor area in the prior art, but also saves process steps and further reduces costs.

[0087] In another optional embodiment, the pixel defining layer is a black material, the light-emitting layer further includes a transparent spacer layer disposed on the pixel defining layer, and the first convex structure is disposed on the same layer as the spacer layer.

[0088] Different from the above-mentioned embodiment, the present embodiment forms a light-emitting layer on the driving circuit layer further comprising: forming a black pixel defining material layer on the driving circuit layer, patterning the pixel defining material layer to form a pixel defining layer, forming a transparent spacer material layer on the pixel defining layer, patterning the spacer material layer to form a spacer layer and a plurality of first convex structures located in the convex structure area of ​​the first display area. In the present embodiment, the spacer layer and the first convex structure are formed in one preparation step through a mask plate, which not only solves the problem of obvious visualization of the under-screen sensor area in the prior art, but also makes the display device not limited by the pixel defining layer material, further saves process steps and reduces costs.

[0089] It can be understood that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0090] Considering that the black material of the black pixel defining layer has the function of transmitting infrared light, in order to meet the requirements of the under-screen infrared sensor technology of the second display area, it is often necessary to open small holes in the black matrix of the COE (Color Film On Encapsulation) structure corresponding to the under-screen infrared sensor. However, after the small holes in the black matrix are opened, the incident light irradiating the cathode will produce relatively strong reflected light, and the reflected light will also produce diffracted light, which will affect the user experience of the display device in the screen-off mode; and the display device cannot achieve the effect of integrated black. In order to solve the above problems, in a specific embodiment, Figure 4 shows a plan view of the display device, Figure 5 for Figure 4 The cross-sectional schematic diagram of the display device along the BB line in FIG. 1 is a cross-sectional schematic diagram of the first display area and the second display area of ​​the display device.

[0091] like Figure 4 and Figure 5 As shown, in the display device of this embodiment, the black material transmits infrared light.

[0092] The color film layer 40 includes second color film filters 43 disposed in the second display area and black matrices 44 disposed between the second color film filters 43 , wherein the black matrix includes second light-transmitting openings 441 ;

[0093] The light-emitting layer 30 includes a second convex structure 34 disposed between adjacent sub-pixel apertures in the second display area, and a positive projection of the second light-transmitting aperture on the substrate falls within a positive projection of the second convex structure on the substrate;

[0094] The display device further includes an infrared sensor 4 disposed on a side of the substrate away from the driving circuit layer and corresponding to the second light-transmitting aperture, and a positive projection of the second convex structure on the substrate falls within a positive projection of the infrared sensor on the substrate;

[0095] The second convex structure is configured to: transmit a first portion of infrared light of the light incident through the second light-transmitting aperture filtered by the pixel defining layer 33 to the infrared sensor, and laterally reflect a second portion of the infrared light.

[0096] In this embodiment, when the pixel defining material layer 33 is a black material, the black pixel defining layer has an infrared light filtering function, so as to add an infrared recognition function such as a face recognition function in the second display area. By sequentially arranging the second light-transmitting aperture and the second convex structure in the second display area corresponding to the infrared sensor, a first portion of the infrared light of the light incident from the second display area after being filtered by the pixel defining layer passes through the second convex structure and is transmitted to the infrared sensor, and a second portion of the filtered infrared light is laterally reflected by the second convex structure. Thus, it solves the problem in the prior art that the light incident from the second display area diffracts when irradiating on the cathode, and the diffracted light enters the human eye. At the same time, the second convex structure has strong light-gathering property, which can converge the transmitted infrared light to improve the recognition accuracy of the infrared sensor, reduce the reflectivity of the incident light to achieve "integrated black" in the screen-off state, improve the display effect of the display device, and enhance the user experience.

[0097] In a specific embodiment, taking the manufacture of the display device as an example for illustration, specifically:

[0098] Forming a first display area corresponding to the under-screen sensor and a second display area at least partially surrounding the first display area on the substrate, specifically including:

[0099] First, form a driving circuit layer on the substrate. The driving circuit layer includes thin-film transistors, specifically including an active layer, a gate, a source electrode, and a drain electrode disposed on the substrate.

[0100] Then, form a light-emitting layer on the driving circuit layer.

[0101] Further comprising: forming a black pixel defining material layer on the driving circuit layer, patterning the pixel defining material layer to form a pixel defining layer, forming a transparent spacer material layer on the pixel defining layer, and patterning the spacer material layer to form a plurality of first convex structures in the convex structure region of the first display area and second convex structures between adjacent sub-pixel openings in the second display area;

[0102] Then, a color filter layer is formed on the light emitting layer.

[0103] Further comprising: forming a second color filter and a black matrix disposed between the second color filters in the second display area, the black matrix including a second light transmissive opening, a positive projection of the second light transmissive opening on the substrate falling within a positive projection of the second convex structure on the substrate, and a positive projection of the second convex structure on the substrate falling within a positive projection of the infrared sensor on the substrate, thereby solving the problem of poor display in the under-screen sensor area in the prior art while avoiding the problem that diffracted light generated by light incident through the second light transmissive opening irradiating the cathode enters the human eye, improving the recognition accuracy of the infrared sensor, reducing the reflectivity of the incident light to achieve "integrated black" in the off-screen state, and improving the display effect of the display device.

[0104] It should be noted that in this embodiment, the infrared sensor is not specifically limited. Each infrared sensor may correspond to one second light transmissive opening or multiple second light transmissive openings. Those skilled in the art can set it according to the size of the infrared sensor and are not limited herein.

[0105] In a specific embodiment, in a direction perpendicular to the substrate, the second light transmissive opening and the black matrix are coaxially arranged.

[0106] In this embodiment, as Figure 5 shown, by coaxially arranging the second light transmissive opening 441 and the black matrix in a direction perpendicular to the substrate, that is, the second light transmissive opening is disposed at the center of the black matrix and the widths of the black matrix on both sides are the same, thereby maximizing the guarantee that the first part of the incident infrared light is transmitted to the infrared sensor through the second convex structure, and the second part is laterally reflected by the second convex structure, thereby maximizing the avoidance of diffracted light generated by the incident light irradiating the cathode from entering the human eye.

[0107] In a specific embodiment, the difference between the radius of the second convex structure and the hole radius of the second light transmissive opening is:

[0108] a≥(3h*λ) / b;

[0109] Wherein, as Figure 6As shown, a is the difference between the radius of the second convex structure and the hole radius of the second light-transmitting opening, h is the distance from the side of the pixel defining layer away from the substrate to the side of the color film layer close to the substrate, λ is the wavelength of infrared light, and b is the aperture of the second light-transmitting opening.

[0110] In this embodiment, by defining the difference between the radius of the second convex structure and the hole radius of the second light-transmitting opening, it is ensured that the second convex structure can collect more than 95% of the diffracted light, thereby avoiding the diffracted light entering the human eye due to the diffraction of the light incident through the second light-transmitting opening onto the cathode.

[0111] Considering that it is necessary to avoid the diffracted light entering the human eye due to the diffraction of the light incident through the second light-transmitting opening onto the cathode, it is necessary to avoid Figure 7 the diffraction of the light incident through the second light-transmitting opening as shown onto the cathode, resulting in the diffracted light irradiating onto the second convex structure, and Figure 8 the emission of another part of the incident light laterally reflected by the second convex structure from the second light-transmitting opening. Therefore, in order to meet the above requirements, in a specific embodiment, the width of the black matrix between the second light-transmitting opening and the second filter is:

[0112] If (d + a - g * tan2θ) is less than 2 and greater than -2:

[0113] c = Max[d + a, g * tan2θ], d ≥ (5h * λ) / e;

[0114] If (d + a - g * tan2θ) is greater than 2 or less than -2:

[0115] c = d + a, d ≥ (5h * λ) / e;

[0116] Wherein, as Figure 9 shown, c is the width of the black matrix between the second light-transmitting opening and the second filter, that is, the distance from one side edge of the second light-transmitting opening to the second filter closest in distance, d is the distance from one side edge of the second convex structure to the second filter closest in distance, g is the distance from the farthest point of the second convex structure from the substrate to the side of the color film layer close to the substrate, θ is the angle between the tangent of the incident light on the second convex structure and the side of the pixel defining layer away from the substrate, and θ is greater than or equal to 10 degrees and less than or equal to 70 degrees, and e is the width of the second filter.

[0117] In this embodiment, as Figure 10As shown, ∠2 is the angle between the tangent of the incident light on the second convex structure and the side of the pixel defining layer away from the substrate, that is, ∠2 = θ. ∠1 is the angle formed by the line perpendicular to the tangent of the second convex structure and the incident light on the side close to the pixel defining layer. ∠3 is the angle between the incident light and the tangent of the second convex structure. Therefore, ∠1 + ∠3 = 90°. Also, since the incident light is perpendicularly incident on the second convex structure, ∠2 + ∠3 = 90°. So, ∠1 = ∠2 = θ. Then, the angle ∠4 formed by the line perpendicular to the tangent of the second convex structure and the incident light on the side away from the pixel defining layer is ∠4 = ∠1 = θ. Considering that the incident angle of the incident light is equal to the reflection angle of the reflected light, ∠5 = ∠4 = θ. Therefore, in order to avoid Figure 8 as shown in a part of the incident light being laterally reflected by the second convex structure and then emitted from the second light-transmitting opening, it is necessary to ensure that the width c of the black matrix is ≥ g * tan2θ.

[0118] In order to avoid the light incident on the second light-transmitting opening from irradiating the cathode and causing diffraction, and the diffracted light irradiating the second convex structure, the specific value of the width c of the black matrix between the second light-transmitting opening and the second filter is determined according to the size of (d + a - g * tan2θ). When (d + a - g * tan2θ) is less than 2 and greater than -2, the width c of the black matrix takes the maximum value of (d + a) and g * tan2θ, where the distance d from one side edge of the second convex structure to the nearest second filter is ≥ (5h * λ) / e, so that 99% of the diffracted light can be avoided from irradiating the second convex structure. When (d + a - g * tan2θ) is greater than 2 or less than -2, in order to avoid the incident light laterally reflected by the second convex structure from being emitted from the second light-transmitting opening, the width c of the black matrix between the second light-transmitting opening and the second filter is set to g * tan2θ. Thus, it can maximally avoid the light incident through the second light-transmitting opening from irradiating the cathode and causing diffraction, and the diffracted light from entering the eyes, improve the recognition accuracy of the infrared sensor, reduce the reflectivity of the incident light to achieve "integrated black" in the screen-off state, and improve the display effect of the display device.

[0119] An embodiment of the present invention provides a display method using the display device described in the above embodiment, including:

[0120] The first part of the light incident on the first light-transmitting opening in the first display area passes through the convex structure area to be transmitted to the under-screen sensor, and the second part of the incident light is laterally reflected by the first convex structure in the convex structure area.

[0121] In this embodiment, a first light-transmitting opening located in the color film layer and a convex structure area located in the light-emitting layer are provided in the first display area corresponding to the under-screen sensor, and a plurality of first convex structures included in the convex structure area are utilized, so that part of the light incident through the first light-transmitting opening is laterally reflected by the first convex structure in the convex structure area, thereby preventing the light incident from the first light-transmitting opening from being vertically reflected into the human eye, thereby solving the problem of poor display in the under-screen sensor area in the prior art and effectively improving the display effect of the display device. At the same time, the convex structure area has a strong light-gathering property, thereby further improving the recognition accuracy of the under-screen sensor and improving the user experience.

[0122] In a specific embodiment, the pixel defining layer of the light-emitting layer is a black material, the black material transmits infrared light, the color filter layer includes a second color filter disposed in the second display area and a black matrix disposed between each second color filter, the black matrix includes a second light-transmitting opening, the light-emitting layer includes a second convex structure disposed between two adjacent sub-pixel openings in the second display area, the orthographic projection of the second light-transmitting opening on the substrate falls within the orthographic projection of the second convex structure on the substrate, the display device also includes an infrared sensor disposed on the substrate away from the light-emitting side and corresponding to the second light-transmitting opening, the orthographic projection of the second convex structure on the substrate falls within the orthographic projection of the infrared sensor on the substrate, and the display method also includes:

[0123] Light incident from the second light-transmitting opening of the second display area is filtered out as infrared light by the pixel defining layer, a first portion of the infrared light passes through the second convex structure and is transmitted to the infrared sensor, and a second portion of the infrared light is laterally reflected by the second convex structure.

[0124] In this embodiment, the first part of the incident infrared light after filtering by the pixel defining layer is transmitted to the infrared sensor through the second convex structure, and the second part is reflected laterally by the second convex structure, thereby solving the problem of obvious visualization of the sensor area under the screen in the prior art, and avoiding the diffraction of the light incident through the second light-transmitting opening onto the cathode, causing the diffracted light to enter the human eye. At the same time, the second convex structure has a strong light-gathering property, which effectively improves the recognition accuracy of the infrared sensor, reduces the reflectivity of the incident light to achieve "integrated black" in the screen-off state, improves the display effect of the display device, and enhances the user experience.

[0125] Corresponding to the display device provided in the above embodiment, as Figure 11As shown in the figure, an embodiment of the present invention further provides a manufacturing method for manufacturing the display device described in the above embodiment. The display device includes a first display area corresponding to the under-screen sensor and a second display area at least partially surrounding the first display area. The manufacturing method includes:

[0126] Form a driving circuit layer on the substrate;

[0127] Form a light-emitting layer on the driving circuit layer, including forming a plurality of sub-pixel opening areas on the driving circuit layer, and forming a convex structure area between at least two adjacent sub-pixel opening areas in at least part of the first display area. The convex structure area includes a plurality of first convex structures disposed on the driving circuit layer;

[0128] Form a color filter layer on the light-emitting layer, including a first color filter disposed in the first display area and a first light-transmitting opening disposed between each first color filter. The positive projection of the convex structure area on the substrate at least partially covers the positive projection of the first light-transmitting opening on the substrate.

[0129] In this embodiment, by providing a first light-transmitting opening located in the color filter layer and a convex structure area located in the light-emitting layer in the first display area corresponding to the under-screen sensor, and using the plurality of first convex structures included in the convex structure area, part of the light incident through the first light-transmitting opening is laterally reflected by the first convex structures of the convex structure area, which can avoid the light incident through the first light-transmitting opening from being vertically reflected into the human eye, thereby solving the problem of poor display in the under-screen sensor area in the prior art, effectively improving the display effect of the display device. At the same time, the convex structure area has strong light-gathering properties, thereby further improving the recognition accuracy of the under-screen sensor and enhancing the user experience.

[0130] In an optional embodiment, forming the light-emitting layer on the driving circuit layer further includes:

[0131] Form a transparent pixel definition material layer on the driving circuit layer, and pattern the pixel definition material layer to form a pixel definition layer and the first convex structure;

[0132] In another optional embodiment, forming the light-emitting layer on the driving circuit layer further includes: forming a transparent spacer material layer on the pixel definition layer, and pattern the spacer material layer to form a spacer layer and the first convex structure.

[0133] In an optional embodiment, the display device further includes an infrared sensor disposed on the side of the substrate away from the light-emitting side corresponding to the second light-transmitting opening,

[0134] Forming the light-emitting layer on the driving circuit layer further includes: forming a black pixel defining material layer on the driving circuit layer, patterning the pixel defining material layer to form a pixel defining layer, forming a transparent spacer material layer on the pixel defining layer, and patterning the spacer material layer to form the first convex structure in the first display area and the second convex structure between adjacent sub-pixel openings in the second display area;

[0135] Forming the color filter layer on the light-emitting layer further includes: the second color filter in the second display area and the black matrix disposed between the second color filters, the black matrix including a second light-transmitting opening, a positive projection of the second light-transmitting opening on the substrate falling within a positive projection of the second convex structure on the substrate, and a positive projection of the second convex structure on the substrate falling within a positive projection of the infrared sensor on the substrate.

[0136] In this embodiment, by allowing the first part of the incident infrared light filtered by the pixel defining layer to be transmitted to the infrared sensor through the second convex structure and the second part to be laterally reflected by the second convex structure, diffraction of the light incident through the second light-transmitting opening onto the cathode and the resulting diffracted light entering the human eye are avoided. At the same time, the second convex structure has strong light-gathering properties, effectively improving the recognition accuracy of the infrared sensor, reducing the reflectivity of the incident light to achieve "integrated black" in the screen-off state, improving the display effect of the display device, and enhancing the user experience.

[0137] Since the manufacturing method of the display device provided by the embodiments of the present application corresponds to the display devices provided by the above several embodiments, the previous embodiments are also applicable to the manufacturing method of the display device provided by this embodiment and will not be described in detail in this embodiment.

[0138] It should be noted that the display device proposed in the embodiments of the present invention is not limited to the specific structure formed by the above manufacturing method of the present invention, and the specific structure of the above display device may also be formed by those skilled in the art using other processing techniques.

[0139] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention and are not intended to limit the embodiments of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is impossible to list all the embodiments here. Any obvious changes or variations derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A display device, comprising a substrate, a driving circuit layer disposed on the substrate, a light-emitting layer and a color filter layer, and an under-screen sensor disposed on the side of the substrate away from the light-emitting side, characterized in that, it includes a first display area corresponding to the under-screen sensor, and a second display area at least partially surrounding the first display area, wherein the color filter layer includes a first color filter disposed in the first display area and a first light-transmitting opening disposed between the first color filters; the light-emitting layer includes a plurality of sub-pixel opening areas, and a convex structure area disposed between at least some adjacent sub-pixel opening areas in the first display area. The convex structure area includes a plurality of first convex structures disposed on the driving circuit layer. The orthographic projection of the convex structure area on the substrate at least partially covers the orthographic projection of the first light-transmitting opening on the substrate. The convex structure area is used to laterally reflect part of the light incident through the first light-transmitting opening through the first convex structures; the pixel defining layer of the light-emitting layer in the first display area is made of a black material, and the black material transmits infrared light; the color filter layer includes a second color filter disposed in the second display area and a black matrix disposed between the second color filters. The black matrix includes a second light-transmitting opening; the light-emitting layer includes a second convex structure disposed between adjacent sub-pixel opening areas in the second display area; the display device further includes an infrared sensor disposed on the side of the substrate away from the light-emitting side and corresponding to the second light-transmitting opening; the second convex structure is used to: transmit the first part of the infrared light of the light incident through the second light-transmitting opening after being filtered by the pixel defining layer to the infrared sensor, and laterally reflect the second part of the infrared light; the difference between the radius of the second convex structure and the hole radius of the second light-transmitting opening is: a≥(3h*λ) / b; wherein, a is the difference between the radius of the second convex structure and the hole radius of the second light-transmitting opening, h is the distance from the side of the pixel defining layer away from the substrate to the side of the color filter layer close to the substrate, λ is the wavelength of infrared light, and b is the aperture of the second light-transmitting opening.

2. The display device according to claim 1, characterized in that, the first convex structure is a convex lens, the diameter of the first convex structure is less than or equal to 10 μm, and the distance between adjacent two first convex structures is greater than or equal to 0 and less than or equal to one-fourth of the diameter of the first convex structure.

3. The display device according to claim 1, characterized in that, in the first display area, the pixel defining layer of the light-emitting layer defines each sub-pixel opening area and the convex structure area.

4. The display device according to claim 3, characterized in that, the pixel defining layer is a transparent material, and the first convex structure is disposed on the same layer as the pixel defining layer; or the light-emitting layer further includes a transparent spacer layer disposed on the pixel defining layer, and the first convex structure is disposed on the same layer as the spacer layer.

5. The display device according to claim 3, characterized in that, The light-emitting layer further includes a transparent spacer layer disposed on the pixel defining layer, and the first convex structure is disposed on the same layer as the spacer layer.

6. The display device according to claim 5, wherein, a positive projection of the second light-transmitting opening on the substrate falls within a positive projection of the second convex structure on the substrate; a positive projection of the second convex structure on the substrate falls within a positive projection of the infrared sensor on the substrate.

7. The display device according to claim 6, wherein, in a direction perpendicular to the substrate, the second light-transmitting opening is coaxially disposed with the black matrix.

8. The display device according to claim 7, wherein, a width of the black matrix between the second light-transmitting opening and the second color filter is: if (d + a - g * tan2θ) is less than 2 and greater than -2: c = Max [d + a, g * tan2θ], d ≥ (5h * λ) / e; if (d + a - g * tan2θ) is greater than 2 or less than -2: c = d + a, d ≥ (5h * λ) / e; wherein, c is the width of the black matrix between the second light-transmitting opening and the second color filter (the distance from one side edge of the second light-transmitting opening to the second color filter closest thereto), d is the distance from one side edge of the second convex structure to the second color filter closest thereto, g is the distance from the farthest point of the second convex structure from the substrate to the side of the color film layer close to the substrate, θ is an angle between a tangent of the incident light on the second convex structure and the side of the pixel defining layer away from the substrate, and θ is greater than or equal to 10 degrees and less than or equal to 70 degrees, and e is the width of the second color filter.

9. A display method using the display device according to any one of claims 1-8, wherein, it includes: a first part of the light incident through the first light-transmitting opening in the first display area passes through the convex structure area to be transmitted to the under-screen sensor, and a second part of the incident light is laterally reflected by the first convex structure in the convex structure area; the pixel defining layer of the light-emitting layer is made of a black material that transmits infrared light, the color film layer includes a second color film filter disposed in the second display area and a black matrix disposed between the second color film filters, the black matrix includes a second light-transmitting opening, the light-emitting layer includes a second convex structure disposed between adjacent sub-pixel opening intervals in the second display area, the display device further includes an infrared sensor disposed on the side of the substrate away from the light-emitting side corresponding to the second light-transmitting opening, and the display method further includes: the light incident through the second light-transmitting opening in the second display area is filtered by the pixel defining layer to obtain infrared light, a first part of the infrared light passes through the second convex structure and is transmitted to the infrared sensor, and a second part of the infrared light is laterally reflected by the second convex structure.

10. A manufacturing method of manufacturing the display device according to any one of claims 1-8, wherein, The display device includes a first display area corresponding to the under-screen sensor, and a second display area at least partially surrounding the first display area. The manufacturing method includes: Forming a driving circuit layer on a substrate; Forming a light-emitting layer on the driving circuit layer, including forming a plurality of sub-pixel opening areas on the driving circuit layer, and forming a convex structure area between at least some adjacent two sub-pixel opening areas in the first display area. The convex structure area includes a plurality of first convex structures disposed on the driving circuit layer; Forming a color filter layer on the light-emitting layer, including a first color filter disposed in the first display area and a first light-transmitting opening disposed between each first color filter. The orthographic projection of the convex structure area on the substrate at least partially covers the orthographic projection of the first light-transmitting opening on the substrate; The display device further includes an infrared sensor disposed on the substrate away from the light-emitting side corresponding to the second light-transmitting opening; The step of forming the light-emitting layer on the driving circuit layer further includes: forming a black pixel defining material layer on the driving circuit layer, patterning the pixel defining material layer to form a pixel defining layer, forming a transparent spacer material layer on the pixel defining layer, and patterning the spacer material layer to form the first convex structure in the first display area and a second convex structure between adjacent two sub-pixel opening areas in the second display area; The step of forming the color filter layer on the light-emitting layer further includes: forming a second color filter in the second display area and a black matrix disposed between each second color filter. The black matrix includes a second light-transmitting opening; 11. The manufacturing method according to claim 10, characterized in that, the step of forming the light-emitting layer on the driving circuit layer further includes: forming a transparent pixel defining material layer on the driving circuit layer, patterning the pixel defining material layer to form a pixel defining layer and the first convex structure; or forming a transparent spacer material layer on the pixel defining layer, patterning the spacer material layer to form a spacer layer and the first convex structure.

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