Display panel and manufacturing method therefor, and display apparatus
By setting a prism structure with a refractive index higher than that of the cover layer in the recognition area of the OLED display panel, the problem that optical sensors cannot detect light at large angles is solved, and more accurate ambient brightness detection and display brightness adjustment are achieved.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- BOE TECHNOLOGY GROUP CO LTD
- Filing Date
- 2026-01-04
- Publication Date
- 2026-07-30
AI Technical Summary
The optical sensors in existing OLED display panels cannot effectively detect light at large angles, resulting in inaccurate ambient brightness detection and affecting the accuracy of display brightness adjustment.
A prism structure is set in the recognition area of the display panel. The refractive index of the prism structure is higher than that of the cover layer. The difference in refractive index is used to focus light from a wide viewing angle onto the optical sensor, thereby increasing the incident angle of the light.
It improves the optical sensor's ability to detect light from a wide viewing angle, enhances the accuracy of ambient brightness detection, and ensures precise adjustment of display brightness.
Smart Images
Figure CN2026070024_30072026_PF_FP_ABST
Abstract
Description
Display panel and its manufacturing method, display device
[0001] Cross-references to related applications
[0002] This application claims priority to Chinese Patent Application No. 202510106632.4, filed in China on January 23, 2025, the entire contents of which are incorporated herein by reference. Technical Field
[0003] This disclosure relates to the field of display technology, and in particular to a display panel, a method for manufacturing the same, and a display device. Background Technology
[0004] OLED (Organic Light-Emitting Diode) display devices have been listed as a promising next-generation display technology due to their advantages such as being thin, light, having a wide viewing angle, being actively emitting light, having continuously adjustable emission colors, having low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple manufacturing process, high luminous efficiency, and being flexible in display. Summary of the Invention
[0005] This disclosure provides a display panel and its manufacturing method, as well as a display device, which enables optical sensors to detect more wide-angle light.
[0006] To address the aforementioned technical problems, the embodiments of this disclosure provide the following technical solutions:
[0007] On the one hand, a display panel is provided, including:
[0008] A substrate having a display area and a recognition area;
[0009] A display device is disposed in the display area of the substrate.
[0010] An optical sensor is disposed in the recognition area of the substrate, located on the side of the substrate away from the display device, and the optical sensor is used to detect the brightness of ambient light;
[0011] A prism structure is disposed in the recognition area on the side of the substrate away from the optical sensor, and the refractive index of the prism structure is greater than the refractive index of the film layer covering the prism structure.
[0012] In some embodiments, in the identification area, the display panel includes:
[0013] The substrate;
[0014] The optical sensor is located on the substrate.
[0015] A driving circuit layer located on the side of the substrate away from the optical sensor;
[0016] A pixel defining layer, a spacer, and an encapsulation layer are located on the side of the driving circuit layer away from the substrate. The spacer is located on the side of the pixel defining layer away from the substrate, and the orthographic projection of the spacer on the substrate is located within the orthographic projection of the pixel defining layer on the substrate.
[0017] The prism structure includes:
[0018] Multiple independent first prism structures are located on the side of the driving circuit layer away from the substrate, and the orthographic projection of the first prism structure on the substrate is located within the orthographic projection of the optical sensor on the substrate.
[0019] In some embodiments, the first prism structure and the spacer are made of the same material.
[0020] In some embodiments, the side surface of the first prism structure is stepped.
[0021] In some embodiments, the encapsulation layer is located on the side of the first prism structure away from the substrate, and the refractive index of the encapsulation layer is less than the refractive index of the first prism structure.
[0022] In some embodiments, along a direction away from the substrate, the encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer stacked sequentially, wherein the refractive index of the first prism structure is greater than the refractive index of the first inorganic layer.
[0023] In some embodiments, the distance between the surface of the first prism structure away from the substrate and the substrate is d1, and the distance between the surface of the spacer away from the substrate and the substrate is d2, wherein d1 is not less than d2.
[0024] In some embodiments, in the identification area, the display panel includes:
[0025] The substrate;
[0026] The optical sensor is located on the substrate.
[0027] A driving circuit layer located on the side of the substrate away from the optical sensor;
[0028] A pixel defining layer, a spacer, and an encapsulation layer are located on the side of the driving circuit layer away from the substrate. The spacer is located on the side of the pixel defining layer away from the substrate, and the orthographic projection of the spacer on the substrate is located within the orthographic projection of the pixel defining layer on the substrate.
[0029] The prism structure includes:
[0030] Multiple independent second prism structures are located on the side of the encapsulation layer away from the substrate, and the orthographic projection of the second prism structure on the substrate is located within the orthographic projection of the optical sensor on the substrate.
[0031] In some embodiments, the side surface of the second prism structure is stepped.
[0032] In some embodiments, the display panel includes: a touch functional layer located on the side of the display device away from the substrate; a touch planarization layer and a black matrix located on the side of the touch functional layer away from the display substrate; and a cover layer located on the side of the touch planarization layer and the black matrix away from the substrate.
[0033] The second prism structure is made of the same layer and material as the touch planarization layer.
[0034] In some embodiments, multiple first grooves penetrate the touch planar layer to form multiple independent second prism structures.
[0035] In some embodiments, the refractive index of the covering layer is less than the refractive index of the second prism structure.
[0036] In some embodiments, the display panel includes: a touch functional layer located on the side of the display device away from the substrate; a touch planarization layer and a black matrix located on the side of the touch functional layer away from the display substrate;
[0037] The surface of the touch-sensitive planar layer has a plurality of second grooves, and the black matrix is located within the second grooves.
[0038] In some embodiments, the touch function layer is located within the second groove, and the black matrix covers the touch function layer. Attached Figure Description
[0039] Figure 1 is a plan view of the display panel;
[0040] Figure 2 is a cross-sectional schematic diagram of the display panel of the related technology;
[0041] Figures 3-6 are cross-sectional schematic diagrams of the display panel according to an embodiment of the present disclosure;
[0042] Figures 7 and 8 are schematic diagrams of the orthographic projection of the prism structure on the substrate according to the embodiments of this disclosure.
[0043] Reference numerals: 01 Display area; 02 Recognition area; 11 Substrate; 12 Optical sensor; 13 Driving circuit layer; 14 Black pixel defining layer; 15 Spacer; 16 Encapsulation layer; 17 Touch planarization layer; 18 Touch function layer; 19 Black matrix; 20 Cover layer; 21 Color filter layer; 131 Metal layer; 151 First prism structure; 171 Second prism structure. Detailed Implementation
[0044] To make the technical problems, technical solutions and advantages to be solved by the embodiments of this disclosure clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.
[0045] As shown in Figure 1, the display panel includes a display area 01 and a recognition area 02. Figure 2 is a schematic diagram of the structure of the recognition area of the related technology display panel. As shown in Figure 2, in the recognition area 02, the display panel includes a 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 planarization layer 17, a black matrix 19, and a cover layer 20. 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 ambient light source brightness.
[0046] The dashed lines with arrows in Figure 2 represent wide-viewing-angle light. It can be seen that when the light source is located to the side of the display panel, the ambient light is blocked by the black matrix 19, the black pixel boundary layer 14, and the metal layer 131 in the driving circuit layer, preventing it from reaching the optical sensor 12. When the optical sensor 12 detects low ambient brightness, it adjusts the display panel's brightness to a relatively low level. Thus, even in bright ambient conditions, the display panel's brightness remains low, resulting in insufficient screen contrast and making it difficult for users to view the screen properly.
[0047] This disclosure provides a display panel and its manufacturing method, as well as a display device, which enables optical sensors to detect more wide-angle light.
[0048] Embodiments of this disclosure provide a display panel, including:
[0049] A substrate having a display area and a recognition area, wherein the display area and the recognition area may not overlap.
[0050] A display device is disposed in the display area of the substrate.
[0051] An optical sensor is disposed in the recognition area of the substrate, located on the side of the substrate away from the display device, and is used to detect the brightness of ambient light. In addition, other types of sensors, such as temperature sensors and humidity sensors, can also be disposed in the recognition area.
[0052] A prism structure is disposed in the recognition area on the side of the substrate away from the optical sensor, and the refractive index of the prism structure is greater than the refractive index of the film layer covering the prism structure.
[0053] In this embodiment, a prism structure is provided on the side of the optical sensor away from the substrate. The refractive index of the prism structure is greater than the refractive index of the film layer covering the prism structure. When large-angle light from the outside shines on the prism structure, it can be refracted due to the difference in refractive index, so that the large-angle light can be focused in a direction perpendicular to the substrate, improving the incident angle of the large-angle light. This allows the large-angle light to shine on the optical sensor, thereby enabling the optical sensor to detect more large-angle light and effectively improving the accuracy of the optical sensor in detecting the brightness of the external environment.
[0054] 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. This way, when large-angle light from the outside shines on the prism structure, refraction occurs due to the difference in refractive index, causing the large-angle light to converge in a direction perpendicular to the substrate. This improves the incident angle of the large-angle light, allowing it to reach the optical sensor and effectively improving the accuracy of the optical sensor in detecting the brightness of the external environment.
[0055] As shown in Figures 3-6, in the recognition 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, and a touch function located on the side of the encapsulation layer 16 away from the substrate 11. The touch functional layer 18 comprises a touch planarization layer 17 and a black matrix 19 located on the side of the touch planarization layer 18 away from the substrate 11, and a cover layer 20 located on the side of the touch planarization layer 17 and the black matrix 19 away from the substrate 11. The driving circuit layer 13 includes devices such as thin-film transistors and signal lines. The pixel defining layer 14 is, for example, a black pixel defining layer, capable of blocking light and defining the recognition area. The touch functional layer 18 includes touch signal lines and touch electrodes, and the orthographic projection of the touch functional layer 18 onto the substrate 11 lies within the orthographic projection of the black matrix 19 onto the substrate. In this embodiment, a prism structure can be provided on the side of the encapsulation layer 16 away from the substrate 11, or a prism structure can be provided on the side of the driving circuit layer 13 away from the substrate 11.
[0056] In some embodiments, as shown in FIG3, in the recognition 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 planarization layer 17 and a black matrix 19 located on the side of the touch function layer 18 away from the substrate 11, and a cover layer 20 located on the side of the touch planarization layer 17 and the black matrix 19 away from the substrate 11. A plurality of independent first prism structures 151 are provided 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 lies within the orthographic projection of the optical sensor 12 on the substrate 11. The refractive index of the first prism structure 151 is greater than that of the encapsulation layer 16. 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 sequentially stacked along a direction away from the substrate 11, and the refractive index of the first prism structure 151 is greater than that of the first inorganic layer.
[0057] 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 in one patterning process, without the need for an additional patterning process to specifically form the first prism structure 151, which can simplify the manufacturing process of the display panel.
[0058] In this embodiment, since the refractive index of the first prism structure 151 is greater than that of the encapsulation layer covering it, as shown in Figure 3, when the wide-angle light (the dashed line with arrows in Figure 3) shines on the first prism structure 151, the difference in refractive index causes refraction, which allows the wide-angle light to converge in a direction perpendicular to the substrate 11, improving the incident angle of the wide-angle light. This allows the wide-angle light to shine on the optical sensor 12, thereby enabling the optical sensor 12 to detect more wide-angle light and effectively improving the accuracy of the optical sensor 12 in detecting the brightness of the external environment.
[0059] In some embodiments, as shown in FIG6, the side surface of the first prism structure 151 can be stepped. Two steps or more steps can be provided on the side surface of the first prism structure 151. When the side surface of the first prism structure 151 is stepped, 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, where d1 is not less than d2. Thus, during the vapor deposition to form the light-emitting layer of the display panel, the first prism structure 151 can support the vapor deposition mask. Because the side surface of the first prism structure 151 is stepped, 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 vapor deposition mask is relatively small. This reduces scratching of the vapor deposition mask and makes it less likely to damage it. In addition, the stepped side of the first prism structure 151 can increase the refractive interface, which is conducive to the convergence of more wide-angle light rays in the direction perpendicular to the substrate 11, so that the optical sensor 12 can detect more wide-angle light rays and effectively improve the accuracy of the optical sensor in detecting the brightness of the external environment.
[0060] In this embodiment, a first prism structure 151 with stepped sides can be formed using a halftone mask or a gray-toned mask. A spacer 15 with stepped sides can also be formed using a halftone mask or a gray-toned mask. When the spacer 15 has stepped sides, the contact area between the spacer 15 and the vapor deposition mask is relatively small during the vapor deposition of the light-emitting layer of the display panel. This reduces scratching of the vapor deposition mask and makes it less likely to damage it.
[0061] In this embodiment, the outer contour of the orthographic projection of the first prism structure 151 onto the substrate 11 can be a circle as shown in Figure 7, or the outer contour of the orthographic projection of the first prism structure 151 perpendicular to the substrate 11 can be a rectangle as shown in Figure 8. This provides more refractive interfaces, which is beneficial for more wide-angle light rays to converge in the direction perpendicular to the substrate 11. Of course, the outer contour of the orthographic projection of the first prism structure 151 perpendicular to the substrate 11 can also be other shapes. The cross-section of the first prism structure 151 in the direction perpendicular to the substrate 11 can be trapezoidal or a trapezoid with stepped sides.
[0062] In some embodiments, as shown in FIG4, in the recognition 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 planarization layer 17 and a black matrix 19 located on the side of the touch function layer 18 away from the substrate 11, and a cover layer 20 located on the side of the touch planarization layer 17 and the black matrix 19 away from the substrate 11. A plurality of independent second prism structures 171 are provided on the side of the encapsulation layer 16 away from the substrate 11, and the orthographic projection of the second prism structure 171 on the substrate 11 lies within the orthographic projection of the optical sensor 12 on the substrate 11. The refractive index of the second prism structure 171 is greater than that of the cover layer 20. 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 planarization layer 17. This allows the second prism structure 171 and the touch planarization layer 17 to be formed simultaneously in a single patterning process, eliminating the need for a separate patterning process to specifically form the second prism structure 171, thus simplifying the manufacturing process of the display panel.
[0063] In this embodiment, the touch planarization layer 17 of the recognition area can be patterned to form a plurality of first grooves penetrating the touch planarization layer 17. The first grooves divide the touch planarization layer 17 into a plurality of independent second prism structures 171.
[0064] In this embodiment, since the refractive index of the second prism structure 171 is greater than that of the cover layer 20 covering it, as shown in Figure 4, when a wide-angle light ray (the dashed line with arrows in Figure 4) shines on the second prism structure 171, the difference in refractive index causes refraction, which allows the wide-angle light ray to converge in a direction perpendicular to the substrate 11, improving the incident angle of the wide-angle light ray. This allows the wide-angle light ray to shine on the optical sensor 12, thereby enabling the optical sensor 12 to detect more wide-angle light ray and effectively improving the accuracy of the optical sensor 12 in detecting the brightness of the external environment.
[0065] In some embodiments, as shown in FIG6, the side surface of the second prism structure 171 can be stepped. Two steps or more steps can be provided on the side surface of the second prism structure 171. The stepped side surface of the second prism structure 171 can increase the number of refractive interfaces, which is conducive to more wide-angle light rays converging in a direction perpendicular to the substrate 11, so that the optical sensor 12 can detect more wide-angle light rays.
[0066] In this embodiment, the outer contour of the orthographic projection of the second prism structure 171 onto the substrate 11 can be a circle as shown in Figure 7, or the outer contour of the orthographic projection of the second prism structure 171 perpendicular to the substrate 11 can be a rectangle as shown in Figure 8. This provides more refractive interfaces, which is beneficial for more wide-angle light rays to converge in the direction perpendicular to the substrate 11. Of course, the outer contour of the orthographic projection of the second prism structure 171 perpendicular to the substrate 11 can also be other shapes. The cross-section of the second prism structure 171 in the direction perpendicular to the substrate 11 can be trapezoidal or a trapezoid with stepped sides.
[0067] In some embodiments, as shown in FIG5, in the recognition 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 planarization layer 17 and a black matrix 19 located on the side of the touch function layer 18 away from the substrate 11, and a cover layer 20 located on the side of the touch planarization layer 17 and the black matrix 19 away from the substrate 11.
[0068] Multiple independent first prism structures 151 are provided on the side of the driving circuit layer 13 away from the substrate 11. The orthographic projection of the first prism structure 151 on the substrate 11 lies within the orthographic projection of the optical sensor 12 on the substrate 11. The refractive index of the first prism structure 151 is greater than that of the encapsulation layer 16. 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. This allows the first prism structure 151 and the spacer 15 to be formed simultaneously in a single patterning process, eliminating the need for a separate patterning process to form the first prism structure 151, thus simplifying the display panel manufacturing process. Additionally, multiple independent second prism structures 171 are provided on the side of the encapsulation layer 16 away from the substrate 11. The orthographic projection of the second prism structure 171 on the substrate 11 lies within the orthographic projection of the optical sensor 12 on the substrate 11. The refractive index of the second prism structure 171 is greater than that of the cover layer 20. 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 planarization layer 17. This allows the second prism structure 171 and the touch planarization layer 17 to be formed simultaneously in a single patterning process, eliminating the need for a separate patterning process to specifically form the second prism structure 171, thus simplifying the manufacturing process of the display panel.
[0069] In this embodiment, since the refractive indices of the first prism structure 151 and the second prism structure 171 are greater than the refractive index of the film layer covering them, as shown in Figure 5, when the wide-angle light rays from the outside (the dashed lines with arrows in Figure 5) irradiate the first prism structure 151 and the second prism structure 171, the refraction can occur due to the difference in refractive index, so that the wide-angle light rays can be focused in a direction perpendicular to the substrate 11, improving the incident angle of the wide-angle light rays, so that the wide-angle light rays can irradiate the optical sensor 12, thereby enabling the optical sensor 12 to detect more wide-angle light rays, effectively improving the accuracy of the optical sensor 12 in detecting the brightness of the external environment.
[0070] In some embodiments, as shown in FIG6, the sides of the first prism structure 151 and the second prism structure 171 can be stepped. Two steps or more steps can be provided on the sides of the first prism structure 151 and the second prism structure 171. When the side of the first prism structure 151 is stepped, 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, where d1 is not less than d2. During the vapor deposition of the light-emitting layer of the display panel, the first prism structure 151 can support the vapor deposition mask. Because the side of the first prism structure 151 is stepped, 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 vapor deposition mask is relatively small. This reduces scratching of the vapor deposition mask and makes it less likely to damage it. In addition, the stepped sides of the first prism structure 151 and the second prism structure 171 can increase the refractive interface, which is conducive to more wide-angle light rays converging in the direction perpendicular to the substrate 11, so that the optical sensor 12 can detect more wide-angle light rays and effectively improve the accuracy of the optical sensor in detecting the brightness of the external environment.
[0071] In some embodiments, the display panel includes: a touch functional layer located on the side of the display device away from the substrate; a touch planarization layer and a black matrix located on the side of the touch functional layer away from the display substrate; as shown in FIG2, the black matrix 19 is located on the side of the touch planarization layer 17 away from the substrate 11, and the distance between the black matrix 19 and the driving circuit layer 13 is H1. In this embodiment, as shown in FIG3-6, in the display area, a plurality of second grooves are formed on the surface of the touch planarization layer 17, and the black matrix 19 is disposed in the second grooves. The distance between the black matrix 19 and the driving circuit layer 13 is H2, where H2 is less than H1. This reduces the height of the black matrix 19, thereby reducing the obstruction of wide-view light by the black matrix 19 and allowing more wide-view light to reach the optical sensor 12, enabling the optical sensor 12 to detect more wide-view light and effectively improving the accuracy of the optical sensor 12 in detecting ambient brightness. The touch functional layer 18 is also located in the second groove, and the black matrix 19 covers the touch functional layer 18.
[0072] Furthermore, without the aforementioned prism structure, multiple second grooves can be formed on the surface of the touch flat layer 17 in the display area, with the black matrix 19 disposed within the second grooves and covering the touch functional layer 18.
[0073] Embodiments of this disclosure also provide a display device, including the display panel described above.
[0074] The display device includes, but is not limited to, components such as: 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 understand that the structure of the display device described above does not constitute a limitation on the display device; the display device may include more or fewer of the aforementioned components, or combine certain components, or arrange different components. In the embodiments of this disclosure, the display device includes, but is not limited to, a monitor, a mobile phone, a tablet computer, a television set, a wearable electronic device, a navigation display device, etc.
[0075] The display device can be any product or component with display function, such as a television, monitor, digital photo frame, mobile phone, or tablet computer. The display device also includes a flexible circuit board, a printed circuit board, and a backplate.
[0076] Embodiments of this disclosure also provide a method for manufacturing a display panel, used to manufacture the aforementioned display panel, the method comprising:
[0077] A substrate is provided, the substrate having a display area and a recognition area;
[0078] A display device is formed in the display area of the substrate.
[0079] An optical sensor is formed in the recognition area of the substrate, the optical sensor being located on the side of the substrate away from the display device, and the optical sensor being used to detect the brightness of ambient light;
[0080] A prism structure is formed in the recognition area. The prism structure is located on the 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.
[0081] In this embodiment, a prism structure is provided on the side of the optical sensor away from the substrate. The refractive index of the prism structure is greater than the refractive index of the film layer covering the prism structure. When large-angle light from the outside shines on the prism structure, it can be refracted due to the difference in refractive index, so that the large-angle light can be focused in a direction perpendicular to the substrate, improving the incident angle of the large-angle light. This allows the large-angle light to shine on the optical sensor, thereby enabling the optical sensor to detect more large-angle light and effectively improving the accuracy of the optical sensor in detecting the brightness of the external environment.
[0082] In some embodiments, as shown in Figures 3-6, the method for manufacturing the display panel specifically includes:
[0083] The optical sensor 12 is formed in the recognition area of the substrate 11;
[0084] A driving circuit layer 13 is formed on the side of the substrate 11 away from the optical sensor 12;
[0085] A pixel defining layer 14 and a spacer 15 are formed on the side of the driving circuit layer 13 away from the substrate 11;
[0086] An encapsulation layer 16 is formed on the side of the pixel defining layer 14 and spacer 15 away from the substrate 11;
[0087] A touch function layer 18 is formed on the side of the encapsulation layer 16 away from the substrate 11;
[0088] A touch planarization layer 17 and a black matrix 19 are formed on the side of the touch functional layer 18 away from the substrate 11;
[0089] A cover layer 20 is formed on the side of the touch planarization layer 17 and the black matrix 19 away from the substrate 11.
[0090] In some embodiments, as shown in Figures 3 and 5, forming the prism structure includes:
[0091] A plurality of independent first prism structures 151 are formed 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 11.
[0092] The refractive index of the first prism structure 151 is greater than that of the encapsulation layer 16. The first prism structure 151 can be made of a light-transmitting material with a refractive index of 1.6 to 1.8.
[0093] In some embodiments, forming the first prism structure 151 includes:
[0094] The spacer 15 and the first prism structure 151 are formed in a single patterning process. This allows the first prism structure 151 and the spacer 15 to be formed simultaneously in a single patterning process, eliminating the need for a separate patterning process to form the first prism structure 151, thus simplifying the manufacturing process of the display panel.
[0095] In this embodiment, since the refractive index of the first prism structure 151 is greater than that of the encapsulation layer covering it, as shown in Figure 3, when the wide-angle light (the dashed line with arrows in Figure 3) shines on the first prism structure 151, the difference in refractive index causes refraction, which allows the wide-angle light to converge in a direction perpendicular to the substrate 11, improving the incident angle of the wide-angle light. This allows the wide-angle light to shine on the optical sensor 12, thereby enabling the optical sensor 12 to detect more wide-angle light and effectively improving the accuracy of the optical sensor 12 in detecting the brightness of the external environment.
[0096] In some embodiments, as shown in Figures 4 and 5, forming the prism structure includes:
[0097] A plurality of independent second prism structures 171 are formed on the side of the encapsulation layer 16 away from the substrate 11, and the orthographic projection of the second prism structure 171 on the substrate 11 is located within the orthographic projection of the optical sensor 12 on the substrate 11.
[0098] The refractive index of the second prism structure 171 is greater than that of the capping layer 20. The second prism structure 171 can be made of a light-transmitting material with a refractive index of 1.6 to 1.8.
[0099] In some embodiments, forming the second prism structure includes:
[0100] The touch planarization layer and the second prism structure are formed in a single patterning process. This allows the second prism structure 171 and the touch planarization layer 17 to be formed simultaneously in a single patterning process, eliminating the need for a separate patterning process to form the second prism structure 171, thus simplifying the display panel manufacturing process.
[0101] In this embodiment, the touch planarization layer 17 of the recognition area can be patterned to form a plurality of first grooves penetrating the touch planarization layer 17. The first grooves divide the touch planarization layer 17 into a plurality of independent second prism structures 171.
[0102] In this embodiment, since the refractive index of the second prism structure 171 is greater than that of the cover layer 20 covering it, as shown in Figure 4, when a wide-angle light ray (the dashed line with arrows in Figure 4) shines on the second prism structure 171, the difference in refractive index causes refraction, which allows the wide-angle light ray to converge in a direction perpendicular to the substrate 11, improving the incident angle of the wide-angle light ray. This allows the wide-angle light ray to shine on the optical sensor 12, thereby enabling the optical sensor 12 to detect more wide-angle light ray and effectively improving the accuracy of the optical sensor 12 in detecting the brightness of the external environment.
[0103] In some embodiments, forming the touch planarization layer 17 and the black matrix 19 includes:
[0104] In the display area, the touch planarization layer 17 with a plurality of second grooves on its surface is formed;
[0105] The black matrix 19 is formed within the second groove.
[0106] As shown in Figure 2, the black matrix 19 is located on the side of the touch planarization layer 17 away from the substrate 11, and the distance between the black matrix 19 and the driving circuit layer 13 is H1. In this embodiment, as shown in Figures 3-6, multiple second grooves are formed on the surface of the touch planarization layer 17 in the display area. The black matrix 19 is disposed in the second groove, and the distance between the black matrix 19 and the driving circuit layer 13 is H2, where H2 is less than H1. This reduces the height of the black matrix 19, thereby reducing its obstruction of wide-view light and allowing more wide-view light to reach the optical sensor 12. This enables the optical sensor 12 to detect more wide-view light, effectively improving the accuracy of the optical sensor 12 in detecting ambient brightness. The touch functional layer 18 is also located in the second groove, and the black matrix 19 covers the touch functional layer 18.
[0107] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, since the embodiments are basically similar to the product embodiments, the descriptions are relatively simple, and the relevant parts can be referred to the descriptions of the product embodiments.
[0108] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.
[0109] It is understandable that when a component such as a layer, film, region, or substrate is referred to as being "above" or "below" another component, the component may be "directly" located "above" or "below" the other component, or there may be intermediate components present.
[0110] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
[0111] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.
Claims
1. A display panel, characterized in that, include: A substrate having a display area and a recognition area; A display device is disposed in the display area of the substrate. An optical sensor is disposed in the recognition area of the substrate, located on the side of the substrate away from the display device, and the optical sensor is used to detect the brightness of ambient light; A prism structure is disposed in the recognition area on the side of the substrate away from the optical sensor, and 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 recognition area, the display panel includes: The substrate; The optical sensor is located on the substrate. A driving circuit layer located on the side of the substrate away from the optical sensor; A pixel defining layer, a spacer, and an encapsulation layer are located on the side of the driving circuit layer away from the substrate. The spacer is located on the side of the pixel defining layer away from the substrate, and the orthographic projection of the spacer on the substrate is located within the orthographic projection of the pixel defining layer on the substrate. The prism structure includes: Multiple independent first prism structures are located on the side of the driving circuit layer away from the substrate, and the orthographic projection of the first prism structure on the substrate is located within the orthographic projection of the optical sensor on the 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 of the first prism structure is stepped.
5. The display panel according to claim 2, characterized in that, The encapsulation layer is located on the side of the first prism structure away from the substrate, and the refractive index of the encapsulation layer is less than the refractive index of the first prism structure.
6. The display panel according to claim 5, characterized in that, Along a direction away from the substrate, the encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer stacked sequentially, wherein 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, The distance between the surface of the first prism structure away from the substrate and the substrate is d1, and the distance between the surface of the spacer away from the substrate and the substrate is d2, where d1 is not less than d2.
8. The display panel according to claim 1, characterized in that, In the recognition area, the display panel includes: The substrate; The optical sensor is located on the substrate. A driving circuit layer located on the side of the substrate away from the optical sensor; A pixel defining layer, a spacer, and an encapsulation layer are located on the side of the driving circuit layer away from the substrate. The spacer is located on the side of the pixel defining layer away from the substrate, and the orthographic projection of the spacer on the substrate is located within the orthographic projection of the pixel defining layer on the substrate. The prism structure includes: Multiple independent second prism structures are located on the side of the encapsulation layer away from the substrate, and the orthographic projection of the second prism structure on the substrate is located within the orthographic projection of the optical sensor on the substrate.
9. The display panel according to claim 8, characterized in that, The side of the second prism structure is stepped.
10. The display panel according to claim 8, characterized in that, The display panel further includes: a touch function layer located on the side of the display device away from the substrate; a touch planarization layer and a black matrix located on the side of the touch function layer away from the display substrate; and a cover layer located on the side of the touch planarization layer and the black matrix away from the substrate. The second prism structure is made of the same layer and material as the touch planarization layer.
11. The display panel according to claim 10, characterized in that, Multiple first grooves penetrate the touch planar layer to form multiple independent second prism structures.
12. The display panel according to claim 10, characterized in that, The refractive index of the covering layer is less than that of the second prism structure.
13. The display panel according to claim 1, characterized in that, The display panel includes: a touch function layer located on the side of the display device away from the substrate; a touch planarization layer and a black matrix located on the side of the touch function layer away from the display substrate; The surface of the touch-sensitive planar layer has a plurality of second grooves, and the black matrix is located within the second grooves.
14. The display panel according to claim 13, characterized in that, The touch function layer is located within the second groove, and the black matrix covers the touch function layer.
15. A display device, characterized in that, Includes the display panel as described in any one of claims 1-14.