Display panel, display device and debugging method

Abstract

The present application provides a display panel, a display device and a debugging method. Specifically, the display panel includes a substrate; at least two pixel islands are arranged in an array on the substrate, and each pixel island includes at least two sub-pixels with different pixel widths; at least two pixel islands are provided with at least two lens structures on a side away from the substrate; for any of the lens structures, the orthographic projections of at least two sub-pixels corresponding to the lens structure on the substrate are located within the orthographic projection of the lens structure on the substrate; the present application compensates for the image displayed by the display panel, reduces the image aberration, and improves the display level of the display panel by arranging at least two sub-pixels with different pixel widths in the array-arranged pixel islands; and arranging the lens structure on the pixel island can enable the user to obtain an image with a smaller aberration and a 3D effect, thereby improving the user's viewing experience.

Description

Technical Field

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

[0002] With the continuous development of science and technology and the continuous improvement of people's living standards, people are increasingly demanding 3D (Three Dimensional) display products. Based on different viewing methods, 3D products can be divided into naked-eye 3D products and non-naked-eye 3D products. Among them, naked-eye 3D technology is a technology that achieves stereoscopic visual effects without the aid of auxiliary tools such as polarized glasses or helmets. By arranging relevant light-control elements in naked-eye 3D products, users can obtain three-dimensional images with a certain space and depth. Due to the advantages of realistic and vivid expression, beautiful and elegant environmental rendering, and strong and shocking visual impact, naked-eye 3D products have a relatively broad development prospect.

[0003] At present, most 3D display panels are limited in size and are restricted by the light control capabilities of the light control elements in existing display panels. The corresponding display panels often have a larger main lobe angle to ensure that users have a better viewing experience; however, due to the influence of pixels and light control elements, the light emitted by the pixels will form a certain divergence angle after passing through the light control elements. In addition, since the human eyes have limited ability to resist crosstalk, as the viewing distance increases, the human eye can tolerate a smaller and smaller divergence angle of the light spot. Therefore, when the distance between the user and the display panel is far, the image received by the user's two eyes will have a more obvious aberration, which will reduce the user's viewing experience and the use effect of the display panel. Summary of the Invention

[0004] In view of this, the present application proposes a display panel, a display device and a debugging method to solve the above-mentioned technical problems.

[0005] Based on the above objectives, the present application provides a display panel, characterized by comprising:

[0006] substrate;

[0007] At least two pixel islands are arranged in an array on the substrate, and each pixel island includes at least two sub-pixels with different pixel widths;

[0008] At least two lens structures are provided one-to-one on the side of at least two pixel islands away from the substrate; for any lens structure, the orthographic projection of at least two sub-pixels corresponding to the lens structure on the substrate is located within the orthographic projection of the lens structure on the substrate.

[0009] Optionally, for any of the sub-pixels, the pixel width of the sub-pixel satisfies the following relationship:

[0010] ;

[0011] in, Indicates the pixel width of the sub-pixel, Indicates the distance between the pixel island to which the sub-pixel belongs and the corresponding lens structure, Describes the angle between the user's two eyes and the same light point within the viewing angle of the display panel, represents the refractive index of the lens structure.

[0012] Optionally, the lens structure is configured as any one of a spherical lens, an aspherical lens, and a lens group.

[0013] Optionally, the spherical lens is configured as a single spherical lens or a double spherical lens.

[0014] Optionally, the radius of curvature of the aspheric lens gradually increases from the center to the edge.

[0015] Optionally, the lens assembly includes:

[0016] a plano-convex lens layer, whose orthographic projection on the pixel island covers the pixel island, and a planar area of ​​the plano-convex lens layer is arranged toward the base substrate;

[0017] The concave lens layer is arranged on the side of the plano-convex lens layer away from the base substrate, and its orthographic projection on the pixel island covers the orthographic projection of the plano-convex lens layer on the pixel island. The concave area of ​​the concave lens layer is arranged toward the base substrate.

[0018] Optionally, the viewing angle range of the display panel is less than or equal to 120°, and the display image of the display panel is compensated by introducing a pinhole model or a fisheye distortion model.

[0019] Optionally, the viewing angle range of the display panel is greater than 120°, and a fisheye distortion model is introduced to compensate for the display image of the display panel.

[0020] Based on the same invention, the present application provides a display device, which includes the display panel described in any one of the above items.

[0021] Based on the same invention, the present application also provides a debugging method applicable to the display panel described in any of the above embodiments, including:

[0022] Shooting the calibration plate through camera calibration to obtain a mapping relationship between the first shot image and the calibration plate image;

[0023] Selecting at least one sub-pixel in each pixel island of the display panel as a display field of view, so that the display field of view displays a pure color image, and determining the position of the maximum brightness within the field of view angle of the display panel as the shooting position;

[0024] The display field of view displays a black and white checkered image, a second captured image is acquired at a shooting position, any sub-pixel in the second captured image is compared with a corresponding sub-pixel in an actual display field of view image based on a mapping relationship, correction parameters for each sub-pixel in the display field of view are acquired, and image correction is performed on the sub-pixel according to the correction parameters of each sub-pixel.

[0025] As can be seen from the above description, the display panel, display device and debugging method provided by the present application can compensate for the image formed by the display panel by setting at least two sub-pixels with different pixel widths in the pixel islands arranged in an array, reduce the aberration generated by the image during the display process, improve the display level of the display panel, and improve the imaging quality of the image; and a lens structure is set on the pixel island, which can adjust the light passing through the lens structure so that the user can obtain a 3D image with smaller aberration, thereby improving the user's viewing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in this application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 This is a schematic diagram of the structure of the display panel in the embodiment of the present application;

[0028] Figure 2 A dotted line diagram showing the distribution of sub-pixel widths within a pixel island in an embodiment of the present application;

[0029] Figure 3A Schematic diagram of the structure of a display panel using a single spherical lens in an embodiment of the present application;

[0030] Figure 3B Schematic diagram of the structure of a display panel using double spherical lenses in an embodiment of the present application;

[0031] Figure 3C Schematic diagram of imaging of a spherical lens in an embodiment of the present application;

[0032] Figure 3D This is a graph showing the field curvature and distortion of a spherical lens when imaging in an embodiment of the present application;

[0033] Figure 4A Schematic diagram of the structure of a display panel using an aspheric lens in an embodiment of the present application;

[0034] Figure 4B Schematic diagram of imaging of an aspheric lens in an embodiment of the present application;

[0035] Figure 4C This is a graph showing the field curvature and distortion of an aspheric lens when imaging in an embodiment of the present application;

[0036] Figure 5A This is a schematic structural diagram of a display panel using a lens assembly in an embodiment of the present application;

[0037] Figure 5B This is a schematic diagram of imaging of the lens assembly in the embodiment of the present application;

[0038] Figure 5C A graph showing the field curvature and distortion of the lens assembly during imaging in an embodiment of the present application;

[0039] Figure 6 This is a flowchart of the debugging method of the display panel in this application.

[0040] Explanation of the reference numerals: 100, base substrate; 200, pixel island; 210, sub-pixel; 300, lens structure; 310, spherical lens; 320, aspherical lens; 330, lens group; 331, plano-convex lens layer; 332, concave lens layer. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of this application more clear, this application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0042] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in the embodiments of the present application 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 may 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.

[0043] Nowadays, with the continuous development of science and technology and the continuous improvement of people's living standards, people have an increasingly strong demand for 3D (Three Dimensional) display products. According to the user's viewing method, 3D products can be divided into naked-eye 3D products and non-naked-eye 3D products. Naked-eye 3D is favored by the majority of users due to its high flexibility and better viewing experience. Among them, naked-eye 3D technology is a technology that achieves stereoscopic visual effects without the help of auxiliary tools such as polarized glasses or helmets. Due to the parallax of the human eyes, by arranging relevant light control elements in naked-eye 3D products, users can obtain three-dimensional images with a certain space and depth. This makes naked-eye 3D products have advantages such as realistic and vivid expression, beautiful and elegant environment rendering, and strong and shocking visual impact. Therefore, it has a relatively broad development prospect.

[0044] Due to the different application scenarios and usage requirements of 3D products, the distance between the user's eyes and the 3D display panel is also different. Therefore, the corresponding optical design requirements for different 3D display panels also vary greatly. However, the size of most 3D display panels is limited. Due to the light control capabilities of the light control elements in existing display panels, when the user is too far or too close to the display panel, the image viewed by the human eye often has certain aberrations, affecting the user experience and viewing effect.

[0045] For 3D display panels, aberration is a major issue that interferes with their visual effects. In related technologies, aberration is also known as full-name chromatic aberration, which mainly refers to the inconsistency between the results obtained by non-paraxial ray tracing and the results obtained by paraxial ray tracing in actual optical systems, and the deviation from the ideal condition of Gaussian optics. Among them, according to the deviation of the image, aberrations mainly include spherical aberration, coma, field curvature, astigmatism, distortion, chromatic aberration and wave aberration, etc. When the image is affected by any of these aberrations, it will affect the display effect of the display panel.

[0046] For long-distance viewing, in order to enable users to obtain better visual effects, the corresponding display panel usually has a larger main lobe angle; however, since the sub-pixels in the display panel are not point light sources, and the light-controlling element used to dim the display panel is not an ideal lens, the light emitted through the pixels will not be emitted in a completely parallel form after passing through the light-controlling element due to the influence of the pixels and the light-controlling element, but will have a certain divergence angle. Since the human eyes have limited ability to resist crosstalk, as the viewing distance increases, the human eye can tolerate a smaller and smaller divergence angle of the light spot. Therefore, when the user is far away from the display panel, the image received by the user's two eyes will have more obvious aberrations, which will reduce the user's viewing experience and the use effect of the display panel.

[0047] In view of this, the present application proposes a display panel, comprising a substrate 100; at least two pixel islands 200 are arranged in an array on the substrate 100, each pixel island 200 including at least two sub-pixels 210 of different pixel widths; at least two lens structures 300 are provided on a side of the at least two pixel islands 200 away from the substrate 100 in a one-to-one correspondence; for any lens structure 300, the orthographic projection of at least two sub-pixels 210 corresponding to the lens structure 300 on the substrate 100 is located within the orthographic projection of the lens structure 300 on the substrate 100, see Figure 1-5C .

[0048] It should be noted that, in the display panel, the base substrate 100 provides corresponding mounting locations for components such as the sub-pixels 210 in the pixel islands 200. At the same time, the base substrate 100 can also be used to support and protect components such as the sub-pixels 210 located on the base substrate 100, so as to provide a good use environment for the sub-pixels 210. A plurality of pixel islands 200 are arranged in an array on the display panel, and at least two sub-pixels 210 with different pixel widths are arranged in each pixel island 200, so that the light emitted by the sub-pixels 210 can form a larger field of view through the lens structure 300, thereby improving the display panel. The display capability is improved, and since the pixel widths of the multiple sub-pixels 210 in the pixel island 200 are different, the field curvature produced by the image can be compensated, the aberration produced during the image display process can be reduced, and the image clarity and imaging quality can be improved; and by arranging a lens structure 300 corresponding to the pixel island 200 on the side away from the base substrate 100, a plurality of continuous viewing areas can be formed, and the light emitted from the pixel island 200 can enter the human eyes through the lens structure 300, and the parallax of the two eyes can be used to enable the user to obtain a 3D display image with a strong sense of stereoscopic and small aberration, thereby improving the user's viewing experience and the use effect of the display panel.

[0049] In addition, the base substrate 100 is further described in conjunction with the present application. The base substrate 100 may include at least one of a stacked base layer, a buffer layer, a gate insulating layer, and an interlayer dielectric layer. The sub-pixels 210 and a TFT (Thin Film Transistor) layer used as a driving circuit may be disposed on the base substrate 100. The base layer may be used to support and protect components disposed on the base substrate 100 and may also block external water and oxygen. For example, the base layer may be a layered structure made of PI (polyimide), silicon oxide, and silicon nitride. The buffer layer is located on the base layer and may provide some protection for the sub-pixels 210. The gate insulating layer may be located on the buffer layer and serve as an electrical insulating barrier layer for the TFT layer. The interlayer dielectric layer may be located on the gate insulating layer and may be used to isolate the sub-pixels 210 from the TFT layer. The planarization layer may be located on the interlayer dielectric layer and may be used to planarize the steps formed by the TFT layer, thereby flattening the surface of the base substrate 100.

[0050] In some embodiments, for any sub-pixel 210 , the pixel width of the sub-pixel 210 satisfies the following relationship:

[0051] ;

[0052] in, represents the pixel width of the sub-pixel 210, represents the distance between the pixel island 200 to which the sub-pixel 210 belongs and the corresponding lens structure 300, Describes the angle between the user's binocular eyes and the same light point within the viewing angle of the display panel. represents the refractive index of the lens structure 300, see Figure 2 .

[0053] It should be noted that; a plurality of pixel islands 200 are arrayed on the base substrate 100, and each pixel island 200 includes at least two sub-pixels 210, wherein each pixel island 200 may include two sub-pixels 210, or may include three, four or even more sub-pixels 210; by arranging sub-pixels 210 with different pixel widths in the pixel island 200, a large degree of crosstalk between the light emitted by adjacent or similar sub-pixels 210 is avoided, so as to reduce the aberration generated during the image formation process; in the pixel island 200, for any sub-pixel 210, its pixel width can be calculated by the above formula, so as to obtain the arrangement of each sub-pixel 210 in the pixel island 200.

[0054] For example, the field of view of the display panel is 100°, and the distance between the user's eyes and the display panel is 4 meters. The user's eyes can be regarded as adjacent viewpoints. Since light will refract when it propagates in a medium, the light emitted by the sub-pixel 210 will also refract after passing through the display panel. The medium through which the light emitted by the sub-pixel 210 passes can be regarded as a homogeneous medium with a refractive index of approximately 1.5. If the angle between adjacent viewpoints is 0.931°, then at a field of view angle of 100°, it can be calculated that the number of viewpoints within the field of view is approximately 108, that is, If the viewpoints are arranged from the central axis of the field of view to both sides, the viewpoints can be marked as ±1, ±2, ±3, ±4...±54 in sequence; it can be seen from the formula: , is used to represent the pixel width of the sub-pixel 210 to be calculated, It is used to represent the distance between the pixel island 200 where the sub-pixel 210 to be calculated is located and the corresponding lens structure 300, Used to express the angle between the user's two eyes and the same light point within the viewing angle of the display panel. It is used to represent the refractive index of the corresponding lens structure 300. Combining the above, it can be seen that is 0.931°, is 1.5; when the distance between the pixel island where the sub-pixel 210 is located and the corresponding lens structure 300 is 0.9741 mm, and the following formula can be obtained: The formula can be used to obtain the pixel widths of different sub-pixels 210 in the pixel island 200. For example, the viewpoints 1 to 54 can be substituted into the formula to obtain the pixel widths of all sub-pixels 210 in the pixel island 200 within a 100° field of view. The pixel width of each sub-pixel 210 can be found in Figure 2 At the same time, from Figure 2 It can also be seen that, among the multiple sub-pixels 210 in the pixel island 200, the smallest pixel width is approximately 10.55 um, and the largest pixel width is approximately 10.97 um.

[0055] In order to improve the accuracy of the pixel width of the corresponding sub-pixel 210 in the pixel island 200 in the display panel, in some embodiments, the pixel width of the sub-pixel 210 can be calculated based on the deflection caused by the light emitted by the sub-pixel 210; specifically, a matrix is ​​used to describe the deflection of light passing through each layer of structure. When the light emitted by the sub-pixel 210 passes through the hierarchical structure in the display panel, due to the different materials of the corresponding hierarchical structure, the refractive index of the light emitted by the sub-pixel 210 is also different from that propagated in the air; therefore, the position of the sub-pixel 210 and its pixel width can be accurately calculated through the matrix optical calculation method.

[0056] In addition, in some embodiments, the position and pixel width of the sub-pixel 210 corresponding to each viewpoint can also be calculated using simulation software. For example, Zemax or Lighttools is used to simulate the sub-pixel 210 in the pixel island 200. When using the aforementioned simulation software, the calculated results are relatively more accurate because factors such as the aberration and tolerance caused by the optical module to the displayed image are taken into account.

[0057] In some embodiments, the lens structure 300 is configured as any one of a spherical lens 310, an aspherical lens 320, and a lens group 330. Figure 3A 、 3B , 4A and 5A.

[0058] It should be noted that by setting at least two pixel islands 200 on the base substrate 100 and setting a lens structure 300 on the side of each pixel island 200 away from the base substrate 100, the light generated by the pixel island 200 will be refracted after passing through the corresponding lens structure 300, forming a plurality of continuous viewing areas, thereby making the light emitted by the pixel island 200 pass through the lens structure 300 to form a relatively continuous image with a better three-dimensional effect; at the same time, the lens structure 300 can also adjust the transmitted light, reduce the image aberration during the imaging process, and thus improve the display level of the display panel; wherein, the lens structure 300 can adopt a spherical lens 310, an aspheric lens 320 or a lens group 330, all of which can compensate for the aberration generated by the image and play a certain dimming effect.

[0059] In addition, in order to enable each pixel island 200 in the display panel to be arranged opposite to a lens structure 300, a lens layer can be arranged in the plane of the side of the pixel island 200 away from the base substrate 100 to cover the entire plane, thereby improving the imaging effect and clarity of the image and reducing the aberration problem caused by excessive imaging in the display area of ​​the display panel.

[0060] In some embodiments, the spherical lens 310 is configured as a single spherical lens 310 or a double spherical lens 310, see Figure 3A and 3B .

[0061] It should be noted that, by setting a lens structure 300 corresponding to any pixel island 200 on a side away from the base substrate 100, the light emitted by the sub-pixel 210 in the pixel island 200 can be refracted after passing through the lens structure 300, and a plurality of continuous viewing areas can be formed. According to the principle of parallax between human eyes, the user can obtain a display image with a strong sense of stereoscopic feeling within the field of view of the display panel, thereby achieving the effect of naked-eye 3D. Among them, when the lens structure 300 is a spherical lens 310, a double spherical lens 310 and a single spherical lens 310 can be used, both of which can The transmitted light is focused to reduce the divergence phenomenon caused by the light passing through the single spherical lens 310, so that the display panel can display a more three-dimensional image. At the same time, the aberration of the image can be compensated to improve the imaging quality of the display panel. Since both spherical areas of the double spherical lens 310 can be transmitted and refracted, the display effect of the double spherical lens 310 is better than that of the single spherical lens 310. In addition, in order to facilitate the production of the corresponding lens layer in the display panel, a nano-imprinting process can be used to emboss the spherical lens layer on the side of the pixel island 200 away from the base substrate 100.

[0062] Here, the lens structure 300 of the display panel adopts a single spherical lens 310 as an example, and combined with Figure 3C and Figure 3D It can be seen that the light emitted by the sub-pixel 210 in the pixel island 200 is projected outside the display panel through the single spherical lens 310, and the single spherical lens 310 can focus the light to form a corresponding image on the corresponding imaging area; Figure 3C It can be seen that the closer the formed image is to the central axis of the single spherical lens 310, the better the light convergence effect is, and the smaller the aberration of the image is, as shown in image a1; conversely, the farther the formed image is from the central axis of the single spherical lens 310, the worse the light convergence effect is, and the larger the aberration of the image is, as shown in image d1; in addition, combined with Figure 3D right Figure 3C Further analysis shows that for image a1-image d1, the larger the RMS (Radius of Mean Square), the greater the image dispersion, and the greater the corresponding image aberration. Figure 3D From the Astigmatic Field Curves and Distortion diagrams, we can see that the larger the RMS of image a1-image d1, the greater the deviation of the curve, and therefore the greater the field curvature and distortion produced by the image.

[0063] In some embodiments, the radius of curvature of the aspheric lens 320 gradually increases from its center to its edge. Figure 4A .

[0064] It should be noted that in the display panel, a lens structure 300 corresponding to each pixel island 200 is provided on a side away from the base substrate 100, so that the light emitted by the pixel island 200 is emitted from the display panel through the lens structure 300. The lens structure 300 can be used to focus the light, and combined with the principle of parallax, the user can view a more three-dimensional image. Among them, the lens structure 300 can be set to an aspheric lens 320 with a curvature radius gradually increasing from the center to the surrounding area, which can reduce the divergence phenomenon caused by passing through the aspheric lens 320, thereby compensating for the field curvature and distortion generated by the image and improving the imaging effect of the display panel. In addition, in this embodiment, an aspheric lens 320 with a curvature radius gradually increasing from its center to the edge is used. Compared with the spherical lens 310, the aspheric lens 320 has a smaller spherical aberration and a stronger light focusing effect, which can reduce the degree of distortion of the displayed image and correct the field curvature generated by the display, thereby further improving the imaging quality of the display panel and making it have a better display effect.

[0065] Combine Figure 4B and Figure 4C It can be seen that after the light emitted by the sub-pixel 210 in the pixel island 200 passes through the aspherical lens 320, the aspherical lens 320 can focus the light to form a corresponding image on the corresponding imaging area. Figure 4B It can be seen that the closer the formed image is to the central axis of the aspheric lens 320, the better the light convergence effect is and the smaller the image aberration is, as shown in image a2; the farther the image is from the central axis of the aspheric lens 320, the worse the light convergence effect is and the larger the image aberration is, as shown in image d2; combined with Figure 4C right Figure 4B Further analysis shows that for image a2-image d2, the RMS of the image is getting larger and larger, the greater the discreteness of the image is, and the greater the image aberration is; and by Figure 4C From the field curvature diagram and distortion diagram in , it can be seen that the larger the RMS of image a2-image d2, the greater the deviation of the curve in the diagram, and therefore the greater the field curvature and distortion of the image.

[0066] In some embodiments, the lens group 330 includes a plano-convex lens layer 331, whose orthographic projection on the pixel island 200 covers the pixel island 200, and the planar area of ​​the plano-convex lens layer 331 is arranged toward the base substrate 100; a concave lens layer 332 is arranged on the side of the plano-convex lens layer 331 away from the base substrate 100, whose orthographic projection on the pixel island 200 covers the orthographic projection of the plano-convex lens layer 331 on the pixel island 200, and the concave area of ​​the concave lens layer 332 is arranged toward the base substrate 100; please refer to Figure 5A .

[0067] It should be noted that each pixel island 200 in the display panel is provided with a corresponding lens structure 300 on its side away from the base substrate 100. The light emitted by the pixel island 200 is emitted out of the display panel through the lens structure 300. By utilizing the dimming effect of the lens structure 300, the display panel can display an image with a better three-dimensional effect. Among them, the lens structure 300 can adopt a lens group 330 composed of a plano-convex lens layer 331 and a concave lens layer 332. Compared with the spherical lens 310 and the aspherical lens 320, the plano-convex lens layer 331 in the lens group 330 is closer to the base substrate 100. One side is located on the pixel island 200, and the concave lens layer 332 is arranged on the side of the plano-convex lens layer 331 away from the base substrate 100. When the light emitted by the pixel island 200 passes through the plano-convex lens layer 331 and the concave lens layer 332 in sequence, the light can be converged by utilizing the focusing effect of the plano-convex lens layer 331, thereby reducing the field curvature generated when the light passes through the plano-convex lens layer 331. At the same time, the diverging effect of the concave lens layer 332 on the light can extend the imaging distance of the lens group 330 and reduce the degree of image distortion, so that the user can obtain a clearer image even at a distance, thereby further improving the imaging effect and imaging capability of the display panel.

[0068] When the lens structure 300 of the display panel adopts the lens group 330, Figure 5B and Figure 5C It can be seen that the light emitted by the pixel island 200 will pass through the lens group 330, and the lens group 330 can form a corresponding image on the corresponding imaging area. Figure 5B It can be seen that the closer the image is to the central axis of the lens group 330, the better the light convergence effect is and the smaller the image aberration is, as shown in image a3; the farther the image is from the central axis of the lens group 330, the worse the light convergence effect is and the larger the image aberration is, as shown in image d3; in addition, combined with Figure 5C right Figure 5B Further analysis shows that for image a3-image d3, the RMS of the image is getting larger and larger, the greater the discreteness of the image is, and the greater the aberration of the image is; and by Figure 5C It can be seen from the field curvature diagram and distortion diagram in that the larger the RMS of image a3-image d3, the greater the deviation of the curve, and therefore the greater the field curvature and distortion produced by the image.

[0069] In some embodiments, the viewing angle range of the display panel is less than or equal to 120°, and the display image of the display panel is compensated by introducing a pinhole model or a fisheye distortion model.

[0070] It should be noted that by setting at least two pixel islands 200 on the base substrate 100 and setting a lens structure 300 on the side of each pixel island 200 away from the base substrate 100, the light emitted by the pixel island 200 will be refracted after passing through the lens structure 300, forming a plurality of continuous viewing areas, so that the light emitted by the pixel island 200 will produce an image with a better three-dimensional effect after passing through the lens structure 300. At the same time, the dimming effect of the lens structure 300 can reduce the aberration of the image of the display panel and improve the display effect of the display panel; for this embodiment, when the field of view angle of the display panel is less than or equal to 120°, the distortion generated by the display panel after passing through the lens structure 300 is small, and the image can be displayed by means of a pinhole imaging model or a fisheye distortion model, which can compensate for the smaller distortion of the image generated during the display process and ensure the imaging quality of the displayed image.

[0071] In some embodiments, the viewing angle range of the display panel is greater than 120°, and the displayed image of the display panel is compensated by introducing a fisheye distortion model.

[0072] It should be noted that, for this embodiment, when the field of view angle of the display panel is greater than 120°, compared with the display panel with a smaller field of view angle, the distortion of the image formed after the light emitted by the pixel island 200 passes through the lens structure 300 is larger, and the pinhole imaging model is not sufficient to compensate for the distortion caused by the image. Therefore, displaying the image using the fisheye distortion model can reduce the distortion caused by the image during the display process and ensure the imaging quality of the image under this field of view angle.

[0073] Based on the same invention, the present application provides a display device, which includes a display panel described in any one of the above items; since the display device has the display panel described above, the display device has all the advantages and all the beneficial effects of any one of the above display panels; in addition, for the present application, the display device can be a product or component such as a large-size television and a film and television screen, and the present application will not go into details about this.

[0074] Based on the same invention, the present application also provides a debugging method applicable to the display panel described in any of the above embodiments, comprising:

[0075] Step S100: photographing a calibration plate through camera calibration to obtain a mapping relationship between the first photographed image and the calibration plate image;

[0076] In this step, the camera can be used to calibrate the plate for shooting, and a first captured image can be captured by the camera. The first captured image is compared and matched with the actual calibration plate image by adopting the camera calibration method to obtain a mapping relationship between the two, so as to use the mapping relationship to determine the position information of the sub-pixel 210 in the display panel, thereby correcting the sub-pixel 210.

[0077] Step S200: selecting at least one sub-pixel 210 in each pixel island 200 of the display panel as a display field, so that the display field displays a pure color image, and determining the position with the maximum brightness within the field angle of the display panel as the shooting position;

[0078] In this embodiment, in order for the camera to capture a clearer image, it is necessary to select a suitable shooting position to shoot the display panel to obtain the image of the sub-pixel 210 within the display field of view; by selecting at least one sub-pixel 210 as the display field of view in each pixel island 200 of the display panel, and lighting the display field of view in the form of a solid color picture, so as to select a position with the maximum brightness within the field of view of the display panel, so that sufficient light in the display field of view can enter the camera, ensuring that the camera can capture a clearer image of the sub-pixel 210, thereby facilitating the subsequent correction of the image of the sub-pixel 210.

[0079] Step S300: Display a black and white checkered image in the display field of view, acquire a second captured image at the capture position, compare any sub-pixel 210 in the second captured image with the corresponding sub-pixel 210 in the actual display field of view image based on a mapping relationship, obtain correction parameters for each sub-pixel 210 in the display field of view, and perform image correction on the sub-pixel 210 according to the correction parameters of each sub-pixel 210.

[0080] In this step, the display field is illuminated with a black and white grid pattern, so that the display field forms an image with a relatively clear contrast, which facilitates camera capture and recognition. The display field in this state is captured by the camera at a capture position with maximum brightness, thereby obtaining a relatively clear second captured image. The position information of the sub-pixels 210 in the second captured image can be determined through a mapping relationship. The position information of any sub-pixel 210 in the second captured image is compared with the position information of the corresponding sub-pixel 210 in the actual display field image to obtain a correction parameter for the image of the corresponding sub-pixel 210. The correction parameter is used to correct the image formed by the corresponding sub-pixel 210 during the display process to compensate for the image formed and reduce image distortion. As the number of corrected sub-pixel 210 images increases, the degree of distortion of the image formed by the display panel decreases, and the imaging quality improves. Therefore, step 300 can be repeated multiple times for different display fields of the same display panel to fully correct the images of the sub-pixels 210 distributed in the display panel, further improving the display quality of the display panel and the corresponding image quality.

[0081] See also Figure 6 The above method can be used to debug the pixel island 200 in the display panel, and can correct the image distortion generated during the display process of the display panel, reduce the image aberration, and improve the display effect of the display panel; at least two pixel islands 200 are arrayed on the base substrate 100 in the display panel, and each pixel island 200 includes at least two sub-pixels 210. The light emitted by the sub-pixels 210 in the pixel island 200 is projected to the outside of the display panel through the lens structure 300, so that the display panel can display the corresponding image. When the display panel displays an image, the displayed image will be distorted, that is, the image formed by the sub-pixels 210 in the pixel island 200 at this time is distorted; through the debugging method in this embodiment, the distortion generated by the image of the sub-pixels 210 in the display panel can be corrected, and the aberration of the formed image can be reduced to improve the overall display effect of the display panel, improve the imaging quality of the display panel, and enhance the user's use and viewing experience of the display panel.

[0082] It should be noted that the debugging method in this embodiment can be used to debug the display panel with 3D display effect described in any of the above embodiments, and can also be used to debug the existing 2D display panel. It can also correct the distortion of the image to improve the display level and display capability of the display panel.

[0083] It should be noted that the above description is limited to some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in an order different from that described in the above embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0084] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0085] In addition, to simplify the description and discussion, and to avoid obscuring the understanding of the embodiments of the present application, devices may be shown in the form of block diagrams to avoid obscuring the understanding of the embodiments of the present application. This also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which the embodiments of the present application will be implemented (i.e., these details should be fully within the scope of understanding of those skilled in the art). Where specific details are set forth to describe exemplary embodiments of the present application, it will be apparent to those skilled in the art that the embodiments of the present application can be implemented without these specific details or with variations in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0086] While the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0087] The embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of this application.

Claims

1. A display panel, characterized in that: include: substrate; At least two pixel islands are arranged in an array on the substrate, and each pixel island includes at least two sub-pixels with different pixel widths; At least two lens structures are provided on a side of at least two pixel islands away from the substrate in a one-to-one correspondence; for any of the lens structures, the orthographic projections of at least two sub-pixels corresponding to the lens structure on the substrate are located within the orthographic projection of the lens structure on the substrate; wherein the pixel width of any of the sub-pixels satisfies the following relationship: ； in, Indicates the pixel width of the sub-pixel, Indicates the distance between the pixel island to which the sub-pixel belongs and the corresponding lens structure, Describes the angle between the user's two eyes and the same light point within the viewing angle of the display panel, represents the refractive index of the lens structure.

2. The display panel according to claim 1, wherein: The lens structure is configured as one of a spherical lens and an aspherical lens.

3. The display panel according to claim 2, wherein: The spherical lens is configured as a single spherical lens or a double spherical lens.

4. The display panel according to claim 2, wherein: The curvature radius of the aspheric lens gradually increases from the center to the edge.

5. The display panel according to claim 1, wherein: The lens structure is arranged as a lens group.

6. The display panel according to claim 5, wherein: The lens assembly comprises: a plano-convex lens layer, wherein the orthographic projection of the plano-convex lens layer on the pixel island covers the pixel island, and the planar area of ​​the plano-convex lens layer is arranged toward the base substrate; The concave lens layer is arranged on the side of the plano-convex lens layer away from the base substrate, and its orthographic projection on the pixel island covers the orthographic projection of the plano-convex lens layer on the pixel island. The concave area of ​​the concave lens layer is arranged toward the base substrate.

7. The display panel according to claim 1, wherein: The viewing angle range of the display panel is less than or equal to 120°, and the display image of the display panel is compensated by introducing a pinhole model or a fisheye distortion model.

8. The display panel according to claim 1, wherein: The viewing angle range of the display panel is greater than 120°, and the display image of the display panel is compensated by introducing a fisheye distortion model.

9. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 8.

10. A debugging method, characterized in that: The display panel according to any one of claims 1 to 8 comprises: Shooting the calibration plate through camera calibration to obtain a mapping relationship between the first shot image and the calibration plate image; Selecting at least one sub-pixel in each pixel island of the display panel as a display field of view, so that the display field of view displays a pure color image, and determining the position of the maximum brightness within the field of view angle of the display panel as the shooting position; The display field of view displays a black and white checkered image, a second captured image is acquired at a shooting position, any sub-pixel in the second captured image is compared with a corresponding sub-pixel in an actual display field of view image based on a mapping relationship, correction parameters for each sub-pixel in the display field of view are acquired, and image correction is performed on the sub-pixel according to the correction parameters of each sub-pixel.

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