Display panel, manufacturing method thereof and display device

Abstract

The invention provides a display panel, a manufacturing method thereof and a display device, and belongs to the technical field of display. The display panel comprises a substrate, wherein the substrate is provided with a display area and an identification area; the display device is arranged in the display area of the substrate base plate; the optical sensor is arranged in the recognition area of the substrate and located on the side, away from the display device, of the substrate, and the optical sensor is used for detecting the brightness of ambient light; the prism structure is arranged in the recognition area and located on the side, away from the optical sensor, of the substrate, and the refractive index of the prism structure is larger than that of a film layer covering the prism structure. According to the invention, the optical sensor can detect more large-angle light.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a manufacturing method thereof, and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) display devices have been listed as the next generation display technology with great development prospects due to their advantages such as thinness, lightness, wide viewing angle, active light emission, continuously adjustable light color, low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high light emission efficiency and flexible display.

[0003] Public Content

[0004] The embodiments of the present disclosure provide a display panel and a manufacturing method thereof, and a display device, which enable an optical sensor to detect more large-angle light.

[0005] To solve the above technical problems, the embodiments of the present disclosure provide the following technical solutions:

[0006] In one aspect, a display panel is provided, comprising:

[0007] A base substrate, wherein the base substrate has a display area and an identification area;

[0008] A display device, wherein the display device is arranged in a display area of ​​the base substrate;

[0009] An optical sensor, the optical sensor is arranged in the identification area of ​​the substrate, located on a side of the substrate away from the display device, and is used to detect the brightness of ambient light;

[0010] A prism structure is arranged in the identification area and is located on a side of the substrate away from the optical sensor. The refractive index of the prism structure is greater than the refractive index of the film layer covering the prism structure.

[0011] In some embodiments, in the identification area, the display panel includes:

[0012] The substrate base plate;

[0013] the optical sensor located on the substrate;

[0014] A driving circuit layer located on a side of the substrate away from the optical sensor;

[0015] A pixel defining layer, a spacer and an encapsulation layer located on a side of the driving circuit layer away from the base substrate, wherein the spacer is located on a side of the pixel defining layer away from the base substrate, and an orthographic projection of the spacer on the base substrate is located within an orthographic projection of the pixel defining layer on the base substrate;

[0016] The prism structure comprises:

[0017] A plurality of mutually independent first prism structures are located on a side of the driving circuit layer away from the base substrate, wherein the orthographic projections of the first prism structures on the base substrate are located within the orthographic projections of the optical sensor on the base substrate.

[0018] In some embodiments, the first prism structure and the spacer are made of the same material.

[0019] In some embodiments, the side surface of the first prism structure is step-shaped.

[0020] In some embodiments, the encapsulation layer is located on a side of the first prism structure away from the substrate, and a refractive index of the encapsulation layer is smaller than a refractive index of the first prism structure.

[0021] In some embodiments, along a direction away from the base substrate, the encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer stacked in sequence, and the refractive index of the first prism structure is greater than the refractive index of the first inorganic layer.

[0022] In some embodiments, the distance between the surface of the first prism structure away from the base substrate and the base substrate is d1, the distance between the surface of the spacer away from the base substrate and the base substrate is d2, and d1 is not less than d2.

[0023] In some embodiments, in the identification area, the display panel includes:

[0024] the substrate base plate;

[0025] the optical sensor located on the substrate;

[0026] A driving circuit layer located on a side of the substrate away from the optical sensor;

[0027] A pixel defining layer, a spacer and an encapsulation layer located on a side of the driving circuit layer away from the base substrate, wherein the spacer is located on a side of the pixel defining layer away from the base substrate, and an orthographic projection of the spacer on the base substrate is located within an orthographic projection of the pixel defining layer on the base substrate;

[0028] The prism structure comprises:

[0029] A plurality of mutually independent second prism structures are located on a side of the packaging layer away from the base substrate, wherein the orthographic projection of the second prism structure on the base substrate is located within the orthographic projection of the optical sensor on the base substrate.

[0030] In some embodiments, a side surface of the second prism structure is step-shaped.

[0031] In some embodiments, the display panel includes: a touch function layer located on a side of the display device away from the base substrate; a touch flat layer and a black matrix located on a side of the touch function layer away from the display substrate; and a covering layer located on a side of the touch flat layer and the black matrix away from the base substrate.

[0032] The second prism structure and the touch flat layer are provided in the same layer and made of the same material.

[0033] In some embodiments, a plurality of first grooves penetrate the touch-sensitive flat layer to form a plurality of independent second prism structures.

[0034] In some embodiments, the refractive index of the cover layer is less than the refractive index of the second prism structure.

[0035] In some embodiments, the display panel includes: a touch function layer located on a side of the display device away from the base substrate; a touch flat layer and a black matrix located on a side of the touch function layer away from the display substrate;

[0036] A plurality of second grooves are formed on the surface of the touch flat layer, and the black matrix is ​​located in the second grooves.

[0037] In some embodiments, the touch function layer is located in the second groove, and the black matrix covers the touch function layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a plan view of a display panel;

[0039] Figure 2 A cross-sectional schematic diagram of a display panel in the related art;

[0040] Figure 3-Figure 6 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure;

[0041] Figure 7 and Figure 8 Schematic diagram of the orthographic projection of the prism structure on the substrate according to the embodiment of the present disclosure.

[0042] Reference numerals

[0043] 01 Display area

[0044] 02 Identification Area

[0045] 11. Substrate

[0046] 12 Optical Sensor

[0047] 13. Driving circuit layer

[0048] 14 pixel defined layer

[0049] 15 Spacer

[0050] 16 Encapsulation layer

[0051] 17 Touch flat layer

[0052] 18 Touch function layer

[0053] 19 Black Matrix

[0054] 20 Overlay

[0055] 21 Color film layer

[0056] 131 metal layer

[0057] 151 First Prism Structure

[0058] 171 Second Prism Structure DETAILED DESCRIPTION

[0059] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present disclosure more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0060] like Figure 1 As shown, the display panel includes a display area 01 and an identification area 02. Figure 2 It is a schematic diagram of the structure of the identification area of ​​the display panel of the related art, such as Figure 2 As shown, in the identification area 02, the display panel includes a base substrate 11, an optical sensor 12, a driving circuit layer 13, a black pixel defining layer 14, a spacer 15, an encapsulation layer 16, a touch function layer 18, a touch flat layer 17, a black matrix 19 and a covering layer 20, wherein the optical sensor 12 is used to detect the brightness of the ambient light source, and the display device adjusts the display brightness of the display screen according to the detected brightness of the ambient light source.

[0061] Figure 2The dotted line with an arrow in the figure is a large viewing angle light. It can be seen that when the light source appears at the side of the display panel, the ambient light is blocked by the black matrix 19, the pixel definition layer 14, and the metal layer 131 in the driving circuit layer, and cannot reach the optical sensor 12. When the optical sensor 12 detects that the external brightness is low, the display brightness of the display panel will also be adjusted to a relatively low level. In this way, even when the ambient brightness is relatively high, the display brightness of the display panel will be adjusted to a relatively low level. Insufficient screen contrast will cause the user to be unable to watch normally.

[0062] The embodiments of the present disclosure provide a display panel and a manufacturing method thereof, and a display device, which enable an optical sensor to detect more large-angle light.

[0063] An embodiment of the present disclosure provides a display panel, including:

[0064] A base substrate, wherein the base substrate has a display area and an identification area, and the display area and the identification area may not overlap each other;

[0065] A display device, wherein the display device is arranged in a display area of ​​the base substrate;

[0066] An optical sensor, the optical sensor is arranged in the identification area of ​​the substrate, located on a side of the substrate away from the display device, and the optical sensor is used to detect the brightness of ambient light; in addition, other types of sensors may also be arranged in the identification area, such as a temperature sensor, a humidity sensor, etc.;

[0067] A prism structure is arranged in the identification area and is located on a side of the substrate away from the optical sensor. The refractive index of the prism structure is greater than the refractive index of the film layer covering the prism structure.

[0068] In this embodiment, a prism structure is arranged on a side of the optical sensor away from the substrate, and the refractive index of the prism structure is greater than the refractive index of the film layer covering the prism structure. In this way, when the external wide-angle light is irradiated to the prism structure, refraction can occur due to the difference in refractive index, so that the wide-angle light can be gathered in a direction perpendicular to the substrate, thereby improving the incident angle of the wide-angle light, so that the wide-angle light can be irradiated to the optical sensor, and then the optical sensor can detect more wide-angle light, effectively improving the accuracy of the optical sensor in detecting the brightness of the external environment.

[0069] In this embodiment, the refractive index of the prism structure needs to be greater than the refractive index of the film layer covering the prism structure, for example, the refractive index of the prism structure can be 1.6-1.8. In this way, when the external wide-angle light is irradiated to the prism structure, refraction can occur due to the difference in refractive index, so that the wide-angle light can be gathered in a direction perpendicular to the substrate, improving the incident angle of the wide-angle light, so that the wide-angle light can be irradiated to the optical sensor, effectively improving the accuracy of the optical sensor in detecting the brightness of the external environment.

[0070] like Figure 3-Figure 6 As shown, in the identification area, the display panel includes: a base substrate 11, an optical sensor 12 located on one side of the base substrate 11, a driving circuit layer 13 located on a side of the base substrate 11 away from the optical sensor 12, a pixel defining layer 14 located on a side of the driving circuit layer 13 away from the base substrate 11, a spacer 15 located on a side of the pixel defining layer 14 away from the base substrate 11, an encapsulation layer 16 located on a side of the spacer 15 and the pixel defining layer away from the base substrate 11, and a touch function layer 18 located on a side of the encapsulation layer 16 away from the base substrate 11. , a touch flat layer 17 and a black matrix 19 located on the side of the touch function layer 18 away from the base substrate 11, and a cover layer 20 located on the side of the touch flat layer 17 and the black matrix 19 away from the base substrate 11, wherein the drive circuit layer 13 includes devices such as thin film transistors and signal lines; the pixel definition layer 14 is, for example, a black pixel definition layer, which can shield light and define an identification area; the touch function layer 18 includes touch signal lines and touch electrodes, etc., and the orthographic projection of the touch function layer 18 on the base substrate 11 is located within the orthographic projection of the black matrix 19 on the base substrate. In this embodiment, a prism structure can be provided on the side of the encapsulation layer 16 away from the base substrate 11, and a prism structure can also be provided on the side of the drive circuit layer 13 away from the base substrate 11.

[0071] In some embodiments, Figure 3As shown, in the identification area, the display panel includes: a substrate 11, an optical sensor 12 located on one side of the substrate 11, a driving circuit layer 13 located on the side of the substrate 11 away from the optical sensor 12, a pixel defining layer 14 located on the side of the driving circuit layer 13 away from the substrate 11, a spacer 15 located on the side of the pixel defining layer 14 away from the substrate 11, an encapsulation layer 16 located on the side of the spacer 15 and the pixel defining layer away from the substrate 11, a touch function layer 18 located on the side of the encapsulation layer 16 away from the substrate 11, a touch flat layer 17 and a black matrix 19 located on the side of the touch function layer 18 away from the substrate 11, and a covering layer 20 located on the side of the touch flat layer 17 and the black matrix 19 away from the substrate 11. A plurality of mutually independent first prism structures 151 are arranged on the side of the driving circuit layer 13 away from the substrate 11, and the orthographic projection of the first prism structure 151 on the substrate 11 is located within the orthographic projection of the optical sensor 12 on the substrate. The refractive index of the first prism structure 151 is greater than the refractive index of the encapsulation layer 16, and the first prism structure 151 can be made of a light-transmitting material with a refractive index of 1.6 to 1.8. In some embodiments, the encapsulation layer 16 includes a first inorganic layer, an organic layer, and a second inorganic layer stacked in sequence in a direction away from the base substrate 11, and the refractive index of the first prism structure 151 is greater than the refractive index of the first inorganic layer.

[0072] In some embodiments, the first prism structure 151 can be made of the same material as the spacer 15, so that the first prism structure 151 and the spacer 15 can be formed simultaneously through a single composition process, without the need for a new composition process to specifically form the first prism structure 151, which can simplify the production process of the display panel.

[0073] In this embodiment, since the refractive index of the first prism structure 151 is greater than the refractive index of the encapsulation layer covering it, Figure 3 As shown, in the external large viewing angle light ( Figure 3 When the light (dashed line with an arrow in the middle) is irradiated onto the first prism structure 151, refraction can occur due to the difference in refractive index, so that the wide-viewing angle light can be gathered in a direction perpendicular to the base substrate 11, thereby improving the incident angle of the wide-viewing angle light, so that the wide-viewing angle light can be irradiated onto the optical sensor 12, thereby enabling the optical sensor 12 to detect more wide-viewing angle light, and effectively improving the accuracy of the optical sensor 12 in detecting the brightness of the external environment.

[0074] In some embodiments, such as Figure 6As shown, the side of the first prism structure 151 may be in the shape of a step, and two steps or more steps may be provided on the side of the first prism structure 151. When the side of the first prism structure 151 is in the shape of a step, the distance between the surface of the first prism structure 151 away from the substrate 11 and the substrate 11 is d1, and the distance between the surface of the spacer 15 away from the substrate 11 and the substrate 11 is d2, and d1 is not less than d2. In this way, when the light-emitting layer of the display panel is formed by evaporation, the first prism structure 151 can support the evaporation mask plate. Since the side of the first prism structure 151 is in the shape of a step, the area of ​​the end face of the first prism structure 151 away from the substrate 11 is relatively small, and the contact area between the first prism structure 151 and the evaporation mask plate is relatively small, which can reduce scratches on the evaporation mask plate and is not easy to damage the evaporation mask plate. In addition, the side of the first prism structure 151 is stepped to increase more refractive interfaces, which is conducive to gathering more wide-angle light in the direction perpendicular to the base substrate 11, so that the optical sensor 12 can detect more wide-angle light, effectively improving the accuracy of the optical sensor in detecting the brightness of the external environment.

[0075] In this embodiment, a halftone mask plate or a gray tone mask plate can be used to form a first prism structure 151 with a stepped side surface, and a halftone mask plate or a gray tone mask plate can also be used to form a spacer 15 with a stepped side surface. When the side surface of the spacer 15 is stepped, when the light-emitting layer of the display panel is formed by evaporation, the contact area between the spacer 15 and the evaporation mask plate is relatively small, which can reduce scratches on the evaporation mask plate and is not easy to damage the evaporation mask plate.

[0076] In this embodiment, the outer contour of the orthographic projection of the first prism structure 151 on the base substrate 11 can be: Figure 7 Alternatively, the outer contour of the orthographic projection of the first prism structure 151 perpendicular to the substrate 11 may be Figure 8 The rectangle shown in the figure can provide more refraction interfaces, which is conducive to more large-viewing angle light to gather in the direction perpendicular to the base substrate 11. Of course, the outer contour of the orthographic projection of the first prism structure 151 perpendicular to the base substrate 11 can also be other shapes. The cross-section of the first prism structure 151 in the direction perpendicular to the base substrate 11 can be a trapezoid or a trapezoid with stepped sides.

[0077] In some embodiments, such as Figure 4As shown, in the identification area, the display panel includes: a base substrate 11, an optical sensor 12 located on one side of the base substrate 11, a driving circuit layer 13 located on the side of the base substrate 11 away from the optical sensor 12, a pixel defining layer 14 located on the side of the driving circuit layer 13 away from the base substrate 11, a spacer 15 located on the side of the pixel defining layer 14 away from the base substrate 11, an encapsulation layer 16 located on the side of the spacer 15 and the pixel defining layer away from the base substrate 11, a touch function layer 18 located on the side of the encapsulation layer 16 away from the base substrate 11, a touch flat layer 17 and a black matrix 19 located on the side of the touch function layer 18 away from the base substrate 11, and a covering layer 20 located on the side of the touch flat layer 17 and the black matrix 19 away from the base substrate 11. A plurality of mutually independent second prism structures 171 are provided on the side of the encapsulation layer 16 away from the base substrate 11, and the orthographic projection of the second prism structure 171 on the base substrate 11 is located within the orthographic projection of the optical sensor 12 on the base substrate 11. The refractive index of the second prism structure 171 is greater than the refractive index of the cover layer 20, and the second prism structure 171 can be made of a light-transmitting material with a refractive index of 1.6 to 1.8. In some embodiments, the second prism structure 171 can be made of the same material as the touch flat layer 17, so that the second prism structure 171 and the touch flat layer 17 can be formed simultaneously through a single patterning process, without the need for a new patterning process to specifically form the second prism structure 171, which can simplify the manufacturing process of the display panel.

[0078] In this embodiment, the touch flat layer 17 in the identification area may be patterned to form a plurality of first grooves penetrating the touch flat layer 17 , and the first grooves separate the touch flat layer 17 into a plurality of mutually independent second prism structures 171 .

[0079] In this embodiment, since the refractive index of the second prism structure 171 is greater than the refractive index of the cover layer 20 covering it, Figure 4 As shown, in the external large viewing angle light ( Figure 4 When the light (dashed line with an arrow in the middle) is irradiated onto the second prism structure 171, refraction can occur due to the difference in refractive index, so that the wide-viewing angle light can be gathered in a direction perpendicular to the base substrate 11, thereby improving the incident angle of the wide-viewing angle light, so that the wide-viewing angle light can be irradiated onto the optical sensor 12, thereby enabling the optical sensor 12 to detect more wide-viewing angle light, and effectively improving the accuracy of the optical sensor 12 in detecting the brightness of the external environment.

[0080] In some embodiments, such as Figure 6As shown, the side of the second prism structure 171 may be in a step shape, and two steps or more steps may be provided on the side of the second prism structure 171. The side of the second prism structure 171 is in a step shape, which can increase more refractive interfaces, and is conducive to more wide-angle light rays to gather in a direction perpendicular to the substrate 11, so that the optical sensor 12 detects more wide-angle light rays.

[0081] In this embodiment, the outer contour of the orthographic projection of the second prism structure 171 on the base substrate 11 can be: Figure 7 Alternatively, the outer contour of the orthographic projection of the second prism structure 171 perpendicular to the substrate 11 may be Figure 8 The rectangle shown in the figure can provide more refraction interfaces, which is conducive to more large-viewing angle light rays to converge in the direction perpendicular to the base substrate 11. Of course, the outer contour of the orthographic projection of the second prism structure 171 perpendicular to the base substrate 11 can also be other shapes. The cross-section of the second prism structure 171 in the direction perpendicular to the base substrate 11 can be a trapezoid or a trapezoid with stepped sides.

[0082] In some embodiments, Figure 5 As shown, in the identification area, the display panel includes: a base substrate 11, an optical sensor 12 located on one side of the base substrate 11, a driving circuit layer 13 located on a side of the base substrate 11 away from the optical sensor 12, a pixel defining layer 14 located on a side of the driving circuit layer 13 away from the base substrate 11, a spacer 15 located on a side of the pixel defining layer 14 away from the base substrate 11, an encapsulation layer 16 located on a side of the spacer 15 and the pixel defining layer away from the base substrate 11, a touch function layer 18 located on a side of the encapsulation layer 16 away from the base substrate 11, a touch flat layer 17 and a black matrix 19 located on a side of the touch function layer 18 away from the base substrate 11, and a covering layer 20 located on a side of the touch flat layer 17 and the black matrix 19 away from the base substrate 11.

[0083] A plurality of mutually independent first prism structures 151 are arranged on the side of the driving circuit layer 13 away from the base substrate 11, and the orthographic projection of the first prism structure 151 on the base substrate 11 is located within the orthographic projection of the optical sensor 12 on the base substrate 11. The refractive index of the first prism structure 151 is greater than the refractive index of the encapsulation layer 16, and the first prism structure 151 can be made of a light-transmitting material with a refractive index of 1.6 to 1.8. In some embodiments, the first prism structure 151 can be made of the same material as the spacer 15, so that the first prism structure 151 and the spacer 15 can be formed simultaneously through a single patterning process, without the need to add a new patterning process to specifically form the first prism structure 151, which can simplify the manufacturing process of the display panel. In addition, a plurality of mutually independent second prism structures 171 are arranged on the side of the encapsulation layer 16 away from the base substrate 11, and the orthographic projection of the second prism structure 171 on the base substrate 11 is located within the orthographic projection of the optical sensor 12 on the base substrate 11. The refractive index of the second prism structure 171 is greater than the refractive index of the cover layer 20, and the second prism structure 171 can be made of a light-transmitting material with a refractive index of 1.6 to 1.8. In some embodiments, the second prism structure 171 can be made of the same material as the touch flat layer 17, so that the second prism structure 171 and the touch flat layer 17 can be formed simultaneously through a single patterning process, without the need for a new patterning process to specifically form the second prism structure 171, which can simplify the manufacturing process of the display panel.

[0084] In this embodiment, since the refractive indexes of the first prism structure 151 and the second prism structure 171 are respectively greater than the refractive indexes of the films covering them, Figure 5 As shown, in the external large viewing angle light ( Figure 5 When the light (dashed line with an arrow in the middle) is irradiated onto the first prism structure 151 and the second prism structure 171, refraction can occur due to the difference in refractive index, so that the wide-viewing angle light can be gathered in a direction perpendicular to the substrate 11, thereby improving the incident angle of the wide-viewing angle light, so that the wide-viewing angle light can be irradiated onto the optical sensor 12, thereby enabling the optical sensor 12 to detect more wide-viewing angle light, and effectively improving the accuracy of the optical sensor 12 in detecting the brightness of the external environment.

[0085] In some embodiments, Figure 6As shown, the side surfaces of the first prism structure 151 and the second prism structure 171 may be in the shape of steps, and two steps or more steps may be provided on the side surfaces of the first prism structure 151 and the second prism structure 171. When the side surface of the first prism structure 151 is in the shape of steps, the distance between the surface of the first prism structure 151 away from the substrate 11 and the substrate 11 is d1, and the distance between the surface of the spacer 15 away from the substrate 11 and the substrate 11 is d2, and d1 is not less than d2. When the light-emitting layer of the display panel is formed by evaporation, the first prism structure 151 can support the evaporation mask plate. Since the side surface of the first prism structure 151 is in the shape of steps, the area of ​​the end surface of the first prism structure 151 away from the substrate 11 is relatively small, and the contact area between the first prism structure 151 and the evaporation mask plate is relatively small, which can reduce the scratching of the evaporation mask plate and is not easy to damage the evaporation mask plate. In addition, the side surfaces of the first prism structure 151 and the second prism structure 171 are stepped to increase more refractive interfaces, which is beneficial for more wide-angle light to gather in the direction perpendicular to the base substrate 11, so that the optical sensor 12 can detect more wide-angle light, effectively improving the accuracy of the optical sensor in detecting the brightness of the external environment.

[0086] In some embodiments, the display panel includes: a touch function layer located on a side of the display device away from the base substrate; a touch flat layer and a black matrix located on a side of the touch function layer away from the display substrate; Figure 2 As shown, the black matrix 19 is located on the side of the touch flat layer 17 away from the base substrate 11, and the distance between the black matrix 19 and the driving circuit layer 13 is H1. Figure 3-Figure 6 As shown, in the display area, a plurality of second grooves are formed on the surface of the touch flat layer 17, and the black matrix 19 is arranged in the second groove. The distance between the black matrix 19 and the driving circuit layer 13 is H2, and H2 is smaller than H1, so that the height of the black matrix 19 is reduced, and the black matrix 19 can reduce the shielding of the wide viewing angle light, so that more wide viewing angle light can reach the optical sensor 12, so that the optical sensor 12 detects more wide viewing angle light, and effectively improves the accuracy of the optical sensor 12 in detecting the brightness of the external environment. Among them, the touch function layer 18 is also located in the second groove, and the black matrix 19 covers the touch function layer 18.

[0087] Furthermore, when the above-mentioned prism structure is not provided, a plurality of second grooves may be formed on the surface of the touch flat layer 17 in the display area, and the black matrix 19 is provided in the second grooves, and the black matrix 19 covers the touch function layer 18 .

[0088] An embodiment of the present disclosure further provides a display device, comprising the display panel as described above.

[0089] The display device includes but is not limited to: a radio frequency unit, a network module, an audio output unit, an input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, and a power supply. Those skilled in the art will appreciate that the structure of the above-mentioned display device does not constitute a limitation on the display device, and the display device may include more or less of the above-mentioned components, or a combination of certain components, or different component arrangements. In the embodiments of the present disclosure, the display device includes but is not limited to a display, a mobile phone, a tablet computer, a television, a wearable electronic device, a navigation display device, and the like.

[0090] The display device may be any product or component with a display function, such as a television, a monitor, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device further includes a flexible circuit board, a printed circuit board and a backplane.

[0091] The embodiment of the present disclosure further provides a method for manufacturing a display panel, which is used to manufacture the above-mentioned display panel. The manufacturing method includes:

[0092] Providing a substrate substrate, wherein the substrate substrate has a display area and an identification area;

[0093] forming a display device in a display area of ​​the base substrate;

[0094] An optical sensor is formed in the identification area of ​​the substrate, the optical sensor is located on a side of the substrate away from the display device, and the optical sensor is used to detect the brightness of ambient light;

[0095] A prism structure is formed in the identification area. The prism structure is located on a side of the substrate away from the optical sensor. The refractive index of the prism structure is greater than the refractive index of the film layer covering the prism structure.

[0096] In this embodiment, a prism structure is arranged on a side of the optical sensor away from the substrate, and the refractive index of the prism structure is greater than the refractive index of the film layer covering the prism structure. In this way, when the external wide-angle light is irradiated to the prism structure, refraction can occur due to the difference in refractive index, so that the wide-angle light can be gathered in a direction perpendicular to the substrate, thereby improving the incident angle of the wide-angle light, so that the wide-angle light can be irradiated to the optical sensor, and then the optical sensor can detect more wide-angle light, effectively improving the accuracy of the optical sensor in detecting the brightness of the external environment.

[0097] In some embodiments, such as Figure 3-Figure 6 As shown, the manufacturing method of the display panel specifically includes:

[0098] The optical sensor 12 is formed in the identification area of ​​the base substrate 11;

[0099] A driving circuit layer 13 is formed on a side of the base substrate 11 away from the optical sensor 12;

[0100] A pixel defining layer 14 and a spacer 15 are formed on a side of the driving circuit layer 13 away from the base substrate 11;

[0101] Forming an encapsulation layer 16 on a side of the pixel defining layer 14 and the spacer 15 away from the base substrate 11;

[0102] Forming a touch function layer 18 on a side of the packaging layer 16 away from the base substrate 11;

[0103] A touch-sensitive flat layer 17 and a black matrix 19 are formed on a side of the touch-sensitive functional layer 18 away from the base substrate 11;

[0104] A covering layer 20 is formed on a side of the touch flat layer 17 and the black matrix 19 away from the base substrate 11 .

[0105] In some embodiments, Figure 3 and Figure 5 As shown, forming the prism structure includes:

[0106] A plurality of mutually independent first prism structures 151 are formed on a side of the driving circuit layer 13 away from the base substrate 11 , and the orthographic projection of the first prism structure 151 on the base substrate 11 is located within the orthographic projection of the optical sensor 12 on the base substrate 11 .

[0107] The refractive index of the first prism structure 151 is greater than the refractive index of the encapsulation layer 16 . The first prism structure 151 may be made of a light-transmitting material having a refractive index of 1.6 to 1.8.

[0108] In some embodiments, forming the first prism structure 151 includes:

[0109] The spacer 15 and the first prism structure 151 are formed by one patterning process. In this way, the first prism structure 151 and the spacer 15 can be formed simultaneously by one patterning process, without adding a new patterning process to form the first prism structure 151, which can simplify the manufacturing process of the display panel.

[0110] In this embodiment, since the refractive index of the first prism structure 151 is greater than the refractive index of the encapsulation layer covering it, Figure 3 As shown, in the external large viewing angle light ( Figure 3When the light (dashed line with an arrow in the middle) is irradiated onto the first prism structure 151, refraction can occur due to the difference in refractive index, so that the wide-viewing angle light can be gathered in a direction perpendicular to the base substrate 11, thereby improving the incident angle of the wide-viewing angle light, so that the wide-viewing angle light can be irradiated onto the optical sensor 12, thereby enabling the optical sensor 12 to detect more wide-viewing angle light, and effectively improving the accuracy of the optical sensor 12 in detecting the brightness of the external environment.

[0111] In some embodiments, Figure 4 and Figure 5 As shown, forming the prism structure includes:

[0112] A plurality of mutually independent second prism structures 171 are formed on a side of the encapsulation layer 16 away from the base substrate 11 , and the orthographic projection of the second prism structure 171 on the base substrate 11 is located within the orthographic projection of the optical sensor 12 on the base substrate 11 .

[0113] The refractive index of the second prism structure 171 is greater than the refractive index of the cover layer 20 , and the second prism structure 171 may be made of a light-transmitting material with a refractive index of 1.6 to 1.8.

[0114] In some embodiments, forming the second prism structure includes:

[0115] The touch flat layer and the second prism structure are formed by one patterning process. In this way, the second prism structure 171 and the touch flat layer 17 can be formed simultaneously by one patterning process, without adding a new patterning process to form the second prism structure 171, which can simplify the manufacturing process of the display panel.

[0116] In this embodiment, the touch flat layer 17 in the identification area may be patterned to form a plurality of first grooves penetrating the touch flat layer 17 , and the first grooves separate the touch flat layer 17 into a plurality of mutually independent second prism structures 171 .

[0117] In this embodiment, since the refractive index of the second prism structure 171 is greater than the refractive index of the cover layer 20 covering it, Figure 4 As shown, in the external large viewing angle light ( Figure 4 When the light (dashed line with an arrow in the middle) is irradiated onto the second prism structure 171, refraction can occur due to the difference in refractive index, so that the wide-viewing angle light can be gathered in a direction perpendicular to the base substrate 11, thereby improving the incident angle of the wide-viewing angle light, so that the wide-viewing angle light can be irradiated onto the optical sensor 12, thereby enabling the optical sensor 12 to detect more wide-viewing angle light, and effectively improving the accuracy of the optical sensor 12 in detecting the brightness of the external environment.

[0118] In some embodiments, forming the touch flat layer 17 and the black matrix 19 includes:

[0119] In the display area, the touch-sensitive flat layer 17 having a plurality of second grooves on its surface is formed;

[0120] The black matrix 19 is formed in the second groove.

[0121] like Figure 2 As shown, the black matrix 19 is located on the side of the touch flat layer 17 away from the base substrate 11, and the distance between the black matrix 19 and the driving circuit layer 13 is H1. Figure 3-Figure 6 As shown, in the display area, a plurality of second grooves are formed on the surface of the touch flat layer 17, and the black matrix 19 is arranged in the second groove. The distance between the black matrix 19 and the driving circuit layer 13 is H2, and H2 is smaller than H1, so that the height of the black matrix 19 is reduced, and the black matrix 19 can reduce the shielding of the wide viewing angle light, so that more wide viewing angle light can reach the optical sensor 12, so that the optical sensor 12 detects more wide viewing angle light, and effectively improves the accuracy of the optical sensor 12 in detecting the brightness of the external environment. Among them, the touch function layer 18 is also located in the second groove, and the black matrix 19 covers the touch function layer 18.

[0122] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the embodiments, since they are basically similar to the product embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the product embodiments.

[0123] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0124] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” or “under” another element, it can be “directly on” or “under” the other element or intervening elements may be present.

[0125] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0126] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: include: A base substrate, wherein the base substrate has a display area and an identification area; A display device, wherein the display device is arranged in a display area of ​​the base substrate; An optical sensor, the optical sensor is arranged in the identification area of ​​the substrate, located on a side of the substrate away from the display device, and is used to detect the brightness of ambient light; A prism structure is arranged in the identification area and is located on a side of the substrate away from the optical sensor. The refractive index of the prism structure is greater than the refractive index of the film layer covering the prism structure.

2. The display panel according to claim 1, characterized in that: In the identification area, the display panel includes: the substrate base plate; the optical sensor located on the substrate; A driving circuit layer located on a side of the substrate away from the optical sensor; A pixel defining layer, a spacer and an encapsulation layer located on a side of the driving circuit layer away from the base substrate, wherein the spacer is located on a side of the pixel defining layer away from the base substrate, and an orthographic projection of the spacer on the base substrate is located within an orthographic projection of the pixel defining layer on the base substrate; The prism structure comprises: A plurality of mutually independent first prism structures are located on a side of the driving circuit layer away from the base substrate, wherein the orthographic projections of the first prism structures on the base substrate are located within the orthographic projections of the optical sensor on the base substrate.

3. The display panel according to claim 2, characterized in that: The first prism structure and the spacer are made of the same material.

4. The display panel according to claim 2, characterized in that: The side surface of the first prism structure is step-shaped.

5. The display panel according to claim 2, characterized in that: The encapsulation layer is located on a side of the first prism structure away from the substrate, and a refractive index of the encapsulation layer is smaller than a refractive index of the first prism structure.

6. The display panel according to claim 5, characterized in that: Along a direction away from the base substrate, the encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer stacked in sequence, and the refractive index of the first prism structure is greater than the refractive index of the first inorganic layer.

7. The display panel according to claim 2, characterized in that: A distance d1 is between a surface of the first prism structure away from the base substrate and the base substrate, a distance d2 is between a surface of the spacer away from the base substrate and the base substrate, and d1 is not less than d2.

8. The display panel according to claim 1, characterized in that: In the identification area, the display panel includes: the substrate base plate; the optical sensor located on the substrate; A driving circuit layer located on a side of the substrate away from the optical sensor; A pixel defining layer, a spacer and an encapsulation layer located on a side of the driving circuit layer away from the base substrate, wherein the spacer is located on a side of the pixel defining layer away from the base substrate, and an orthographic projection of the spacer on the base substrate is located within an orthographic projection of the pixel defining layer on the base substrate; The prism structure comprises: A plurality of mutually independent second prism structures are located on a side of the packaging layer away from the base substrate, wherein the orthographic projection of the second prism structure on the base substrate is located within the orthographic projection of the optical sensor on the base substrate.

9. The display panel according to claim 8, characterized in that: The side surface of the second prism structure is step-shaped.

10. The display panel according to claim 8, characterized in that: The display panel further comprises: a touch function layer located on a side of the display device away from the base substrate; a touch flat layer and a black matrix located on a side of the touch function layer away from the base substrate; and a covering layer located on a side of the touch flat layer and the black matrix away from the base substrate. The second prism structure and the touch flat layer are provided in the same layer and made of the same material.

11. The display panel according to claim 10, characterized in that: A plurality of first grooves penetrate the touch-sensitive flat layer to form a plurality of independent second prism structures.

12. The display panel according to claim 10, characterized in that: The cover layer has a refractive index less than a refractive index of the second prism structure.

13. The display panel according to claim 1, characterized in that: The display panel comprises: a touch function layer located on a side of the display device away from the base substrate; a touch flat layer and a black matrix located on a side of the touch function layer away from the base substrate; A plurality of second grooves are formed on the surface of the touch flat layer, and the black matrix is ​​located in the second grooves.

14. The display panel according to claim 13, characterized in that: The touch function layer is located in the second groove, and the black matrix covers the touch function layer.

15. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 14.

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