A 3D display device and a method for improving image crosstalk distribution

Abstract

The present invention relates to the field of 3D display technology, and in particular to a 3D display device and a method for improving image crosstalk distribution. The 3D display device comprises: a display unit and a cylindrical lens array arranged on the light-emitting side of the display unit, the display unit comprises a plurality of pixel islands, each of the pixel islands corresponds to at least two cylindrical lenses in the cylindrical lens array, wherein the plurality of sub-pixels covered by each cylindrical lens in the modulation direction are arranged at intervals, so that the gap between each two adjacent sub-pixels is interspersed by light emitted by other sub-pixels in the same pixel island; in summary, the design of this embodiment can realize continuous light emission of the pixel island, thereby ensuring the continuity of the visible space and effectively avoiding the occurrence of moiré.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D display, and in particular to a 3D display device and a method for improving image crosstalk distribution. Background Art

[0002] With the advancement of science and technology, 3D stereoscopic display technology is becoming more and more commonly used in real life. Since naked-eye 3D technology does not require 3D glasses to view 3D effects, it has better promotion and application prospects and has become the research focus of many 3D display manufacturers.

[0003] The existing naked-eye 3D technology is mainly implemented by a 3D display device, which includes: a display unit and a lens array arranged on the light-emitting side of the display unit, wherein the display unit includes a plurality of pixel islands, each pixel island includes a plurality of sub-pixels. Currently, due to the limitation of process capabilities, there is a gap between every two adjacent sub-pixels. When the gap is projected to the corresponding position in space, a "black area" will be seen, resulting in moiré patterns, which in turn causes the pixel island to be unable to emit light continuously. Summary of the invention

[0004] The purpose of the present application is to provide a 3D display device and a method for improving image crosstalk distribution, so as to solve the technical problem in the prior art that there is a gap between every two adjacent sub-pixels, resulting in failure to emit light continuously.

[0005] (I) Technical solution

[0006] To achieve the above-mentioned purpose, the first aspect of the present invention provides a 3D display device, comprising: a display unit and a cylindrical lens array arranged on the light-emitting side of the display unit, the display unit comprising a plurality of pixel islands, each of the pixel islands corresponding to at least two cylindrical lenses in the cylindrical lens array, wherein the plurality of sub-pixels covered by each of the cylindrical lenses in the modulation direction are arranged at intervals so that the gap between each two adjacent sub-pixels is interspersed by light emitted by other sub-pixels in the same pixel island.

[0007] As one of the optional solutions of the present technical solution, there is no common divisor between the number of the cylindrical lenses and the number of sub-pixels in each of the pixel islands.

[0008] As one of the optional solutions of the present technical solution, the cylindrical lens array has a fixed focal length.

[0009] As one of the optional solutions of the present technical solution, the cylindrical lens array has a variable focal length.

[0010] As one of the optional solutions of the present technical solution, the sum of the intervals between all sub-pixel openings in each pixel island is equal to the sum of the intervals between the corresponding cylindrical lenses.

[0011] As one of the optional solutions of the present technical solution, the cylindrical lens array is installed on the light-emitting side of the display unit through a spacer layer.

[0012] As one of the optional solutions of the present technical solution, the outer side of the cylindrical lens array is further wrapped with a flat layer, and the refractive index of the cylindrical lens array is different from the refractive index of the flat layer.

[0013] As one of the optional solutions of the present technical solution, the cylindrical lens array is arranged as a straight-row structure.

[0014] As one of the optional solutions of the present technical solution, the lens spacing size in the cylindrical lens array is as follows:

[0015]

[0016] Wherein, D is the lens spacing; P is the pixel island spacing; and M is the number of cylindrical lenses corresponding to each pixel island.

[0017] As one of the optional solutions of the present technical solution, when the single viewpoint light output angle θ≤1.125°, the placement height dimension of the cylindrical lens array is as follows:

[0018]

[0019] Wherein, T is the placement height of the cylindrical lens array; Ppixel is the opening width of each sub-pixel; and n is the refractive index of the spacer layer.

[0020] To achieve the above objective, a second aspect of the present invention provides a light field display system, such as the 3D display device described in any one of the above.

[0021] To achieve the above object, a third aspect of the present invention provides a method for improving image crosstalk distribution, using a 3D display device as described in any one of the above, the 3D display device having a variable focal length, the method comprising:

[0022] Determine the visible space crosstalk distribution data at each curvature radius;

[0023] Extracting the curvature radius corresponding to the minimum crosstalk at the spatial position, and recording the minimum crosstalk value corresponding to this position, so as to establish a focal length database and a crosstalk database, and store them;

[0024] Determine the coordinates of the center of the eyebrows, and retrieve the corresponding lens focal length through the focal length database according to the coordinates of the center of the eyebrows;

[0025] The focal length of the 3D display device is adjusted according to the focal length of the lens.

[0026] As one of the optional solutions of the present technical solution, the step of determining the visible space crosstalk distribution data under each curvature radius specifically includes:

[0027] Calculate the light output angle and corresponding brightness value of each sub-pixel at each curvature radius to generate an angular spectrum database and store it;

[0028] Determine the angle ranges of the left eye and the right eye relative to each pixel island, retrieve the sub-pixels in the corresponding pixel islands in the angular spectrum database, turn on the sub-pixels, and turn off the remaining sub-pixels;

[0029] The corresponding brightness values ​​of the turned-on sub-pixels are retrieved through the angular spectrum database and the crosstalk distribution data of the entire visible space is calculated.

[0030] As one of the optional solutions of the present technical solution, the step of calculating the light emission angle and the corresponding light brightness value of each sub-pixel at each curvature radius to generate an angular spectrum database and store it specifically includes:

[0031] The display unit is divided into a plurality of partitions, and the light emission angle and the corresponding light brightness value of each sub-pixel in each partition at each curvature radius are calculated to generate an angular spectrum database and store it.

[0032] As one of the optional solutions of this technical solution, the crosstalk distribution of the entire visual space is as follows:

[0033] The left eye crosstalk distribution value is the ratio of the sum of the brightness values ​​emitted by the sub-pixels within the viewing range of the right eye received by the left eye to the sum of the brightness values ​​emitted by the sub-pixels within the viewing range of the left eye received by the left eye;

[0034] The right eye crosstalk distribution value is the ratio of the sum of the brightness values ​​emitted by the sub-pixels within the viewing range of the left eye received by the right eye to the sum of the brightness values ​​emitted by the sub-pixels within the viewing range of the right eye received by the right eye.

[0035] (II) Beneficial effects

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] The present invention provides a 3D display device and a method for improving image crosstalk distribution. The 3D display device includes: a display unit and a cylindrical lens array arranged on the light-emitting side of the display unit, the display unit includes a plurality of pixel islands, each of the pixel islands corresponds to at least two cylindrical lenses in the cylindrical lens array, wherein a plurality of sub-pixels covered by each cylindrical lens in a modulation direction are arranged at intervals so that the gap between each two adjacent sub-pixels is interspersed by light emitted by other sub-pixels in the same pixel island; in summary, the design of this embodiment can realize continuous light emission of the pixel islands, thereby ensuring the continuity of the visible space and effectively avoiding the occurrence of moiré patterns. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0040] Figure 1 is a schematic structural diagram showing the coordination between the cylindrical lens array and the display unit in the present invention;

[0041] Figure 2 is a schematic diagram of light emitting from a 3D display device in the present invention;

[0042] Figure 3 yes Figure 2 A partial enlarged view of

[0043] Figure 4 is shown with Figure 2 Schematic diagram of luminous light of a 3D display device corresponding to an error;

[0044] Figure 5 yes Figure 4 A partial enlarged view of

[0045] Figure 6 is a schematic structural diagram showing the coordination between a cylindrical lens and a sub-pixel in one embodiment of the present invention;

[0046] Figure 7 is a schematic structural diagram showing the coordination between a cylindrical lens and a sub-pixel in another embodiment of the present invention;

[0047] Figure 8 is a structural schematic diagram showing the coordination between a cylindrical lens and a sub-pixel in another embodiment of the present invention;

[0048] Fig. 9 is a schematic structural diagram of an off-site 3D display device in the present invention;

[0049] Fig.10 It is a schematic diagram of the structure of the in-factory 3D display device of the present invention;

[0050] Fig.11 3D display device outside the factory, 3D display device inside the factory and lens-free 3D display device in 2D display state in the present invention;

[0051] Fig.12 is a light emission spectrum diagram corresponding to the sixth pixel in the off-site 3D display device of the present invention when the radius of curvature is 72 μm;

[0052] Fig.13 is a light emission spectrum diagram corresponding to the sixth pixel in the off-site 3D display device of the present invention when the radius of curvature is 100 μm;

[0053] Fig.14 is a light emission spectrum diagram corresponding to the sixth pixel in the off-site 3D display device of the present invention when the radius of curvature is 140 μm;

[0054] Fig.15 is a visible space crosstalk distribution diagram corresponding to the off-site 3D display device in the present invention when the radius of curvature is 72 μm;

[0055] Fig.16 is a visible space crosstalk distribution diagram corresponding to the off-site 3D display device of the present invention when the radius of curvature is 100 μm;

[0056] Fig.17 is a visible space crosstalk distribution diagram corresponding to the off-site 3D display device in the present invention when the radius of curvature is 140 μm;

[0057] Fig.18 yes Fig.16 The visible space distribution diagram corresponding to the crosstalk less than 10%;

[0058] Fig.19 is a graph showing the relationship between the radius of curvature at which each crosstalk is less than 10% and the viewing distance;

[0059] Fig. 20 is a light emission spectrum diagram corresponding to the eleventh pixel in the in-factory 3D display device shown in the first embodiment of the present invention when the radius of curvature is 50 μm;

[0060] Fig.21 is a light emission spectrum diagram corresponding to the eleventh pixel in the in-plant 3D display device shown in the first embodiment of the present invention when the radius of curvature is 74 μm;

[0061] Fig. 22 It is the light-emitting spectrum diagram corresponding to the eleventh pixel in the factory 3D display device shown in Embodiment 1 of the present invention when the curvature radius is 110 μm;

[0062] Fig.23 It is a visual spatial crosstalk distribution diagram corresponding to the factory 3D display device when the radius of curvature is 50 μm shown in Embodiment 1 of the present invention;

[0063] Fig.24 It is a visual spatial crosstalk distribution diagram corresponding to the factory 3D display device when the curvature radius is 74 μm shown in Embodiment 1 of the present invention;

[0064] Fig.25 It is a visual spatial crosstalk distribution diagram corresponding to the factory 3D display device when the radius of curvature is 110 μm shown in Embodiment 1 of the present invention;

[0065] Fig.26 yes Fig.24 The visible space distribution diagram corresponding to the crosstalk less than 10%;

[0066] Fig. 27 is a graph showing the relationship between the radius of curvature at which each crosstalk is less than 10% and the viewing distance;

[0067] Fig.28 It is the light-out spectrum diagram corresponding to a certain sub-pixel in the factory 3D display device shown in Embodiment 2 of the present invention when the focal length is 385 μm;

[0068] Fig.29 It is the light-out spectrum diagram corresponding to a certain sub-pixel in the factory 3D display device shown in Embodiment 2 of the present invention when the focal length is 570 μm;

[0069] Fig.30 It is the light-out spectrum diagram corresponding to a certain sub-pixel in the factory 3D display device shown in Embodiment 2 of the present invention when the focal length is 845 μm;

[0070] Fig.31 It is a diagram of the correspondence between each sub-pixel in the factory 3D display device shown in Embodiment 2 of the present invention and the optimal focal length when each sub-pixel is collimated with light;

[0071] Fig.32 yes Fig.31 Crosstalk distribution diagram;

[0072] Fig.33 It is a diagram showing the display unit area division of the second embodiment;

[0073] Figure 34-Figure 43 yes Fig.33 A graph showing the relationship between the collimated light output of each sub-pixel in the first to tenth zones and the optimal focal length;

[0074] Fig.44 It is the crosstalk distribution diagram corresponding to the second embodiment.

[0075] In the figure: 1, display unit; 2, cylindrical lens array; 3, spacer layer; 4, flat layer; 5, liquid crystal film; 6, first driving electrode; 7, second driving electrode; 8, sub-pixel; 9, gap; 10, encapsulation layer. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0077] The existing naked-eye 3D technology is mainly implemented by a 3D display device, which includes: a display unit 1 and a lens array arranged on the light-emitting side of the display unit 1, wherein the display unit 1 includes a plurality of pixel islands, each pixel island includes a plurality of sub-pixels 8. Currently, due to limitations in process capabilities, there is a gap 9 between each two adjacent sub-pixels 8. When the gap 9 is projected to the corresponding position in space, a "black area" will be seen, resulting in moiré patterns, which in turn causes the pixel island to be unable to emit light continuously.

[0078] Embodiment 1

[0079] In order to solve the above technical problems, Figure 1-Figure 9 As shown in the present application, a light field display system includes: a 3D display device. The specific structure of the 3D display device will be described in detail below:

[0080] A 3D display device comprises: a display unit 1 and a cylindrical lens array 2 arranged on the light-emitting side of the display unit 1. Preferably, the cylindrical lens array 2 is arranged as a straight-row structure. At this time, since the distances from each sub-pixel 8 in a pixel island to the normal of the cylindrical lens are not equal, the crosstalk between views can be greatly reduced; the outer side of the cylindrical lens array 2 is also wrapped with a flat layer 4, and the refractive index of the cylindrical lens array 2 is different from the refractive index of the flat layer 4. Preferably, the refractive index of the cylindrical lens is greater than the refractive index of the flat layer 4; wherein the focal length of the cylindrical lens array 2 can be designed as a fixed focal length or a variable focal length. The fixed focal length is used as an example in the following embodiments, and the design of the variable focal length is described in detail in other embodiments.

[0081] In this embodiment, the display unit 1 of the present invention is configured as a display panel. Specifically, the display panel can be configured as a Micro-LED display panel, an LCD display panel, or other OLED display panels. Preferably, the display unit 1 is provided with an OLED display panel. According to the function, it can be a common OLED display panel, a transparent OLED display panel, etc.; according to the light-emitting principle, it can be an RGB three-color display panel, a white light + color film OLED display panel, a quantum dot + OLED display panel, etc. The present invention does not specifically limit the type of display panel.

[0082] In a specific embodiment, the column lens array 2 is mounted on the display unit 1 through a septum layer 3 . The light-emitting side of the spacer layer 3; more specifically, the refractive index of the spacer layer 3 is equal to the refractive index of the cylindrical lens array 2. Of course, the refractive index of the spacer layer is not limited to being equal to the refractive index of the cylindrical lens, and can also be set to be unequal. The unequal situation will be explained in detail in the subsequent embodiments. The relationship between the refractive index of the spacer layer and the refractive index of the cylindrical lens is not specifically limited in this application; and the size of the spacer layer 3 along the X-axis direction is equal to the size of the cylindrical lens array 2 along the X-axis direction to ensure that the spacer layer 3 covers each lens of the cylindrical lens array 2; to ensure that the light from the display unit 1 can smoothly pass through the spacer layer 3 and diverge into the cylindrical lens array 2, and no light loss will occur in the above process. Further, in order to ensure light transmittance, the spacer layer 3 is preferably made of a transparent material. Exemplarily, the spacer layer 3 can be made of inorganic glass, organic glass or other resins. Preferably, it is made of pmma resin. In summary, the spacer layer 3 in this embodiment is not limited to being made of the above-mentioned materials. As long as the material with the refractive index equal to that of the cylindrical lens array 2 is applicable to this embodiment, it belongs to the protection scope of this application.

[0083] The display unit 1 includes a plurality of pixel islands. For example, the display unit 1 includes: 1880×540 pixel islands, each pixel island has a size of 154.11 μm×154.11 μm; in a preferred embodiment, each pixel island includes a plurality of sub-pixels 8, specifically, Figure 1 As shown, this embodiment increases the number of pixels in the x-direction, thereby increasing the resolution of the display device in the x-axis direction, so that the increased resolution and the lost resolution offset each other, thereby ensuring that the resolution of the 3D display device in the x-axis direction is balanced; in another preferred embodiment, each of the pixel islands corresponds to at least two cylindrical lenses in the cylindrical lens array 2, such as Figure 2-Figure 8As shown, each pixel island can correspond to two cylindrical lenses, or three cylindrical lenses, or four cylindrical lenses. In this embodiment, the number of cylindrical lenses corresponding to each pixel island is not limited; further, the multiple sub-pixels 8 covered by each cylindrical lens in the modulation direction are arranged at intervals, so that the gap 9 between each two adjacent sub-pixels 8 is interspersed by the light emitted by other sub-pixels 8 in the same pixel island, so that the light emitted by multiple sub-pixels 8 in the same pixel island can be interspersed and complementary, thereby realizing continuous luminescence of the pixel island, thereby ensuring the continuity of the visible space and effectively avoiding the occurrence of moiré patterns.

[0084] Specifically, each pixel island corresponds to two column lenses in the column lens array 2 as an example, such as Figure 4 and Figure 5 As shown in FIG. 1 , when the positions of the plurality of sub-pixels 8 corresponding to the first cylindrical lens are exactly the same as the positions of the plurality of sub-pixels 8 corresponding to the second cylindrical lens, that is, the sub-pixels 8 corresponding to the two cylindrical lenses are repeated units, the gap 9 between each two adjacent sub-pixels 8 cannot be interspersed with the light emitted by other sub-pixels 8 in the same pixel island, thereby causing the pixel island to be unable to emit light continuously, and further causing a "black area" to be seen when the gap 9 is projected to the corresponding position in space, thereby causing moiré patterns to appear, affecting the display effect; in order to solve the above technical problems, the present embodiment adopts the following method: Figure 2 and Figure 3 The design of the column lens is that the plurality of sub-pixels 8 covered in the modulation direction are arranged at intervals, that is, the sub-pixels 8 corresponding to the two column lenses are non-repeating units, specifically, such as Figure 3 As shown, the first cylindrical lens corresponds to the first sub-pixel 8, the third sub-pixel 8, the fifth sub-pixel 8, the seventh sub-pixel 8, the ninth sub-pixel 8 and the eleventh sub-pixel 8, and the second cylindrical lens corresponds to the second sub-pixel 8, the fourth sub-pixel 8, the sixth sub-pixel 8, the eighth sub-pixel 8 and the tenth sub-pixel 8. That is to say, when the multiple sub-pixels 8 corresponding to the second cylindrical lens are overlapped with the multiple sub-pixels 8 corresponding to the first cylindrical lens, a continuous arrangement of sub-pixels 8 will be formed to form a complete pixel island; thereby, when the light-emitting operation is performed, the gap 9 between each two adjacent sub-pixels 8 is interspersed with the light emitted by other sub-pixels 8 in the same pixel island, so that the light emitted by multiple sub-pixels 8 in the same pixel island can be interspersed and complementary, thereby realizing continuous light emission of the pixel island, thereby ensuring the continuity of the visible space and effectively avoiding the occurrence of moiré patterns.

[0085] On the basis of the above embodiment, in order to avoid repeated units, in this embodiment, there is no common divisor between the number of cylindrical lenses and the number of sub-pixels 8 in each pixel island. For example, when M=2, the number N of sub-pixels 8 can be selected from 3, 5, 7, 9, 11, 13, 15, etc. Specifically, Figure 6 As shown in the figure, when M=2 and N=3, the first cylindrical lens corresponds to the first sub-pixel 8 and the third sub-pixel 8, and the second cylindrical lens corresponds to the second sub-pixel 8. At this time, the aperture ratio of the pixel in the X-axis direction is 1 / M, that is, 50%; in another specific embodiment, when M=3, N can be 4, 5, 7, 8, 10, 11, 13, 14..., for example, when M=3 and N=5, the cylindrical lens and the sub-pixel 8 are as follows: Figure 7 The arrangement is shown in FIG. 1 . At this time, the aperture ratio of the pixel in the X-axis direction is 33.33%; similarly, when M=4, N can be 5, 7, 9, 11, 13, 15, etc. For example, when M=4 and N=5, the cylindrical lens and the sub-pixel 8 are as shown in FIG. Figure 8 The arrangement setting shown is that at this time, the opening ratio of the pixel in the X-axis direction is 25%; Figure 6 , Figure 7 as well as Figure 8 It can be seen that the more cylindrical lenses each cylindrical lens corresponds to, the lower the corresponding pixel aperture ratio is. In order to ensure that the display product has a larger aperture ratio, it is preferred to adopt a solution in which each pixel island corresponds to two cylindrical lenses.

[0086] In a preferred embodiment, when all sub-pixels 8 in a pixel island are turned on and given the same grayscale, for example, when the grayscale value is 20, the 3D display device is a 2D display. At this time, the sum of the opening intervals of all sub-pixels 8 in each pixel island is designed to be equal to the sum of the intervals between the corresponding cylindrical lenses, thereby ensuring that the pixel light brightness remains unchanged and the viewing angle is continuous; specifically, Fig.11 As shown, compared with the display device without the column lens array 2, the display effect of the 3D display device of this embodiment is the same as that of the display device without the column lens array 2 under 2D display.

[0087] The following is Fig. 9 The 3D display device shown in the factory and Fig.10 Taking the in-factory 3D display device as an example, the following three parameters of the 3D display device are optimized, specifically including: cylindrical lens interval D, placement height T of the cylindrical lens, and curvature radius r of the cylindrical lens, that is, the focal length f of the cylindrical lens.

[0088] Specifically, Fig. 9As shown, in the off-site 3D display device, the flat layer 4 is arranged on the side of the spacer layer 3 away from the display unit 1, and the cylindrical lens array 2 is arranged on the outside of the spacer layer 3. The outermost side is protected by the encapsulation layer 10, wherein the refractive index n1 of the cylindrical lens array 2 is 1.61, and the refractive index n2 of the flat layer 4 is 1.41; and as shown in FIG. Fig.10 As shown, in the in-factory 3D display device, the cylindrical lens array 2 is arranged on the side of the spacer layer 3 away from the display unit 1, and the flat layer 4 is arranged on the outside of the spacer layer 3. Specifically, the refractive index n1 of the cylindrical lens array 2 is 1.55, and the refractive index n2 of the flat layer 4 is 1.42; wherein, there is a gap S between every two adjacent lenses, and illustratively, S is designed to be 4 mm; it should be noted that the gap S in the in-factory 3D display device in this embodiment has no effect on the subsequent parameter optimization, and two embodiments are given to facilitate the parameter optimization of two commonly used 3D display devices respectively, so as to facilitate the production.

[0089] Among them, the lens spacing dimensions in the column lens array 2 are as follows:

[0090]

[0091] Wherein, D is the lens spacing; P is the pixel island spacing; M is the number of cylindrical lenses corresponding to each pixel island. In this specific embodiment, when the pixel island spacing P is set to 154.11 μm and the number of cylindrical lenses is two, the corresponding calculated spacing D between each adjacent two cylindrical lenses is 77.055 m.

[0092] The following is the placement height T of the column lens is optimized:

[0093] The design of placement height needs to consider the single viewpoint light angle. Theoretically, the smaller the light angle, the higher the viewpoint density, and the better the motion parallax continuity. At the same time, a more reasonable placement height should be selected in combination with the actual process. The specific design is as follows:

[0094] like Fig. 9 and Fig.10 As shown, the placement height T is defined as the distance from the lower surface of the column lens array 2 to the pixel light-out surface, which will affect the divergence angle θ of the single-view light out (such as Figure 3 The specific relationship is:

[0095]

[0096] In the formula, Ppixel is the opening width of each sub-pixel 8; n is the refractive index of the spacer layer 3; It can be seen from formula (2) that when the opening width Ppixel of the sub-pixel 8 is constant, the larger the placement height T, the smaller the divergence angle θ of the single viewpoint light, so the density of the viewpoint distribution in space is greater, and the motion parallax continuity is better, but the placement height is too high, which will make the device thick and heavy, and will also make the 3D visual space farther away, so the placement height design should take the minimum value while meeting the viewpoint density requirements. When the single viewpoint light angle is ≤1.125° (obtained through the subjective evaluation of viewpoint continuity by 20 observers), the human eye cannot perceive the image jump when watching, so θ≤1.125° is required, and it is substituted into formula (2) to obtain:

[0097]

[0098] At present, under the G2.5 process limit, 11 sub-pixels 8 can be designed in one pixel island. It is known that the pixel island pitch P=154.11μm, so the pitch of one sub-pixel 8 is 14.01μm. Since the x-direction aperture ratio of one pixel island corresponding to two cylindrical lenses is 50%, the opening width of the sub-pixel 8 Ppixel=7.005μm. The refractive index of the spacer layer 3 is n=1.5. Substituting it into formula (3), it is obtained that T≥535μm. It can be seen that when making the placement height, it should be designed as close to T=535μm as possible.

[0099] like Fig. 9 and Fig.10 As shown, the height of the cylindrical lens is the sum of the thickness of the spacer layer 3 and each film layer, including: the thickness of the encapsulation layer 10, the thickness of the adhesive layer between the spacer layer 3 and the display unit 1, the thickness of the adhesive layer between the cylindrical lens array 2 and the spacer layer 3, etc., selected according to the actual process conditions, and the cylindrical lens model made outside the factory is selected ( Fig. 9 ) The placement height is 540μm, and the factory column lens array 2 model is selected ( Fig.10 ) is placed at a height of 565 μm.

[0100] Next, we optimize the focal length f of the cylindrical lens.

[0101] Combined with the cylindrical lens spacing D = 77.055μm and placement height T = 540μm (outside the factory) and T = 565μm (inside the factory) designed previously, the curvature radius r is optimized according to the two process conditions outside the factory and inside the factory respectively; then according to the calculation relationship between focal length and curvature radius: f = r / (n1-n2), the focal length f of the cylindrical lens can be calculated.

[0102] ① Optimization of the radius of curvature r outside the factory (Off-factory process materials n1=1.61, n2=1.41)

[0103] First, according to the ideal lens focal plane design (the pixel light-emitting surface is located on the focal plane of the lens), r = (n1-n2) T / n = 72μm is obtained, and optical software modeling and simulation are performed according to the theoretical curvature radius calculated by the ideal lens to obtain the light emission angle spectrum of each sub-pixel 8. The following example is taken as an example of the light emission angle spectrum of the sixth pixel corresponding to the center of the second cylindrical lens passing through the upper two cylindrical lenses when M = 2 and N = 11. The light emission angle spectrum of other sub-pixels 8 passing through the upper cylindrical lenses can be obtained through the modeling and simulation process. The specific process is the same and will not be repeated here; Fig.12 FIG. 1 shows the light emission angle spectrum when the curvature radius r is 72 μm. It can be found from the figure that the light emission angle spectrum of sub-pixel 8 obtained at the middle viewing angle is relatively collimated, while the light emission angle spectrum of sub-pixel 8 obtained at the edge viewing angle is relatively divergent. Fig.13 It shows the light-exit angle spectrum of the sixth pixel passing through the two column lenses above when the radius of curvature r=100 μm, and as Fig.14 It is shown that the light-exit angle spectrum of the sixth pixel passing through the two column lenses above when the radius of curvature r=140 μm; according to Figure 12-14 By comparison, it can be found that as the curvature radius r gradually increases, it can be found that the edges of the light emitting angle spectrum of the sub-pixel 8 are gradually collimated, while the middle gradually diverges; and it can be seen that the light emitting angle spectrum of the sub-pixel 8 is different at different curvature radii, and the resulting visible space crosstalk distribution is also different; therefore, this embodiment obtains the visible space crosstalk distribution corresponding to each curvature radius through the following calculation process.

[0104] The spatial angular spectrum energy distribution of each subpixel 8 at each radius of curvature is obtained;

[0105] Specifically, through Figure 12-14 As shown, the light emitting angle and corresponding brightness value of each sub-pixel 8 at each curvature radius can be determined through the above embodiment, and stored as a database, called an angular spectrum database. When needed, only the following call is performed.

[0106] The angle ranges within the left eye's viewing range and the right eye's viewing range relative to each pixel island are determined respectively, and the sub-pixels 8 within the corresponding pixel islands are retrieved from the angular spectrum database and turned on, while the remaining sub-pixels 8 are turned off.

[0107] Specifically, firstly, the coordinates of the two eyes in space are determined by the eye tracking system, and the angle of the eye relative to each pixel island is determined by the coordinates, and the sub-pixel 8 is retrieved by the angular spectrum database. Specifically, the angle range of the left eye relative to each pixel island is determined, and the corresponding sub-pixel 8 is retrieved by the angular spectrum database, so as to turn on the above sub-pixel 8 and turn off other sub-pixels 8; at the same time, the angle range of the right eye relative to each pixel island is determined, and the corresponding sub-pixel 8 is retrieved by the angular spectrum database; illustratively, the position accuracy of the eye tracking system is ±0.5°, the delay time is ±100ms, and the head movement speed is 65mm / s. The angle range value of the left eye relative to the pixel island is calculated by the above data; at the same time, the angle range value of the right eye relative to the pixel island is calculated by the above data, so as to determine that the sub-pixels 8 within the angle range value are all seen by the right eye, so as to turn on this part of the sub-pixels 8 and turn off the remaining sub-pixels 8; then the corresponding brightness values ​​of the turned-on sub-pixels 8 are retrieved by the angular spectrum database and the crosstalk distribution of the entire visible space is calculated.

[0108] In a specific embodiment, the crosstalk distribution throughout the visual space is as follows:

[0109] Left eye crosstalk = E left looking right / E left looking left

[0110] Right eye crosstalk = Eright looking left / Eright looking right (4)

[0111] That is to say, the left-eye crosstalk distribution value is the ratio of the sum of the relative brightness values ​​emitted by the sub-pixels 8 within the viewing range of the right eye received by the left eye to the sum of the relative brightness values ​​emitted by the sub-pixels 8 within the viewing range of the left eye received by the left eye; the right-eye crosstalk distribution value is the ratio of the sum of the relative brightness values ​​emitted by the sub-pixels 8 within the viewing range of the left eye received by the right eye to the sum of the relative brightness values ​​emitted by the sub-pixels 8 within the viewing range of the right eye received by the right eye.

[0112] Specifically, the detector set on the left eye receives the relative brightness value emitted by the sub-pixel 8 within the visual range of the right eye, and the received relative brightness values ​​of the sub-pixel 8 are summed as the numerator; the left eye detector receives the relative brightness value emitted by the sub-pixel 8 within the visual range of the left eye, and the received relative brightness values ​​of the sub-pixel 8 are summed as the denominator. The ratio of the two can determine the left eye crosstalk value; similarly, the detector set on the right eye receives the relative brightness value emitted by the sub-pixel 8 within the visual range of the left eye, and the received relative brightness values ​​of the sub-pixel 8 are summed as the numerator; the right eye detector receives the relative brightness value emitted by the sub-pixel 8 within the visual range of the right eye, and the received relative brightness values ​​of the sub-pixel 8 are summed as the denominator. The ratio of the two can determine the right eye crosstalk value; in summary, the crosstalk distribution value of the entire visual space is determined.

[0113] like Fig.15 The visual spatial crosstalk distribution corresponding to the radius of curvature r=72 μm is shown; Fig.16 The visual spatial crosstalk distribution corresponding to the radius of curvature r=100 μm is shown; Fig.17 The crosstalk distribution in the visible space corresponding to the curvature radius r = 140 μm is shown; the contour lines from the outside to the inside are the 10% crosstalk boundary, the 3% crosstalk boundary, and the 0% crosstalk boundary. According to the 3D standard of crosstalk < 10%, the crosstalk within 10% shown in Figure 16 is extracted to obtain the following: Fig.18 The visual spatial distribution shown with less than 10% crosstalk, in addition, Fig.18 Only the case of curvature radius r = 100 μm is shown. For visual spaces with other curvature radii, we extract the near limit (the closest limit of the visual space), the far limit (the farthest limit of the visual space), and the width of the best viewing surface (500 mm) and draw them as shown below: Fig.19 The relationship diagram with the change of curvature radius is shown in the figure. According to the use requirements of the product (the product target of this project is Monitor, the viewing distance needs to cover 500-800mm, and the horizontal viewing angle is as large as possible). If the viewing angle is greater than ±45°, the curvature radius r>90μm must be guaranteed; if the far limit is greater than 1000mm, the curvature radius r<112 μm must be guaranteed. Considering the process tolerance of the cylindrical lens array 2 and the accuracy of the human eye tracking system mentioned later, the middle value r=100μm is taken, and the corresponding calculated focal length f=500μm is obtained. The visible space within 10% crosstalk is Fig.18 The results shown are: where the viewing distance is 430 to 1280 mm, and the lateral movable range at the optimal viewing distance of 500 mm is -555 mm to 555 mm, which is converted to a viewing angle of ±48°.

[0114] ② Optimization of the radius of curvature r in the factory (the process materials n1=1.55, n2=1.42 in the factory)

[0115] Similarly, according to the ideal lens focal plane design (the pixel light-emitting surface is located on the focal plane of the lens), r = (n1-n2)T / n = 49μm is obtained, and optical software modeling and simulation are performed according to the theoretical curvature radius calculated by the ideal lens to obtain the light emission angle spectrum of each sub-pixel 8; the following example is taken as an example to illustrate the light emission angle spectrum of the eleventh sub-pixel 8 corresponding to the edge of the first cylindrical lens passing through each upper cylindrical lens when M = 2 and N = 11. The light emission angle spectrum of other sub-pixels 8 passing through the upper cylindrical lens can be obtained through the modeling and simulation process. The specific process is the same and will not be described in detail here; Fig. 20 FIG. 1 shows the light emission angle spectrum when the radius of curvature r is 50 μm. It can be found from the figure that the light emission angle spectrum of sub-pixel 8 obtained at the middle viewing angle is relatively collimated, while the light emission angle spectrum of sub-pixel 8 obtained at the edge viewing angle is relatively divergent. Fig.21 It shows the light-exit angle spectrum of the eleventh pixel passing through each column lens above when the radius of curvature r=74 μm, and as Fig. 22 It is shown that the light-exit angle spectrum of the eleventh pixel passing through each column lens above when the radius of curvature r=110 μm is shown, according to Figure 20-22 By comparison, it can be found that as the radius of curvature r gradually increases, it can be found that the edges of the light emitting angle spectrum of the sub-pixel 8 are gradually collimated, while the middle gradually diverges; and it can be seen that the light emitting angle spectrum of the sub-pixel 8 is different at different curvature radii, and the resulting visible space crosstalk distribution is also different; therefore, the visible space crosstalk distribution corresponding to each curvature radius is obtained through the calculation process of the above embodiment, and the specific calculation process is the same as the above embodiment, which will not be repeated here.

[0116] like Fig.23 The visual spatial crosstalk distribution corresponding to the radius of curvature r=50 μm is shown; Fig.24 The visual spatial crosstalk distribution corresponding to the radius of curvature r=74 μm is shown; Fig.25 The crosstalk distribution in the visible space corresponding to the curvature radius r = 110 μm is shown; the contour lines from the outside to the inside are the 10% crosstalk boundary, the 3% crosstalk boundary, and the 0% crosstalk boundary. According to the 3D standard of crosstalk < 10%, the crosstalk within 10% shown in Figure 24 is extracted to obtain the following: Fig.26 The visual spatial distribution of less than 10% crosstalk shown; where, Fig.26 Only the case of curvature radius r = 74 μm is shown. For the visual space of other curvature radii, we extract the near limit (the closest limit of the visual space), the far limit (the farthest limit of the visual space), and the width of the best viewing surface (500 mm) and draw them as shown below: Fig. 27 As shown in the relationship diagram with the change of curvature radius, according to the use requirements of the product (the product target of this project is Monitor, the viewing distance needs to cover 500-800mm, and the horizontal viewing angle is as large as possible), if the viewing angle is greater than ±45°, the curvature radius r>66μm must be guaranteed; if the far limit is greater than 1000mm, the curvature radius r<82 μm must be guaranteed. Taking into account the process tolerance of the cylindrical lens array 2 and the human eye tracking system to be mentioned later, the middle value r=74μm is taken, and the corresponding focal length f=569.2μm is calculated. The visual space within 10% crosstalk is obtained. Fig.23 The results shown are: where the viewing distance is 430 to 1280 mm, and the lateral movable range at the optimal viewing distance of 500 mm is -575 mm to 575 mm, which is converted to a viewing angle of ±49°.

[0117] like Figure 23-Figure 25As shown, if the user wants to use the in-plant 3D display device in this embodiment to observe at a large angle under the premise of low crosstalk, the curvature radius of the in-plant 3D display device should be set to about 110μm; similarly, if the user wants to use the in-plant 3D display device in this embodiment to observe at a longer viewing distance under the premise of low crosstalk, the curvature radius of the in-plant 3D display device should be set to about 50μm; similarly, as shown in FIG. 15- Fig.17 As shown, if the user wants to use the off-site 3D display device in this embodiment to observe at a large angle under the premise of low crosstalk, the corresponding curvature radius of the off-site 3D display device should be set to about 140μm; similarly, if the user wants to use the off-site 3D display device in this embodiment to observe at a farther viewing distance under the premise of low crosstalk, the corresponding curvature radius of the off-site 3D display device should be set to about 72μm.

[0118] In summary, in this embodiment, a fixed lens structure is used. Since the focal length of the lens cannot be changed, the focal length of the lens is fixed at different viewing positions. The visual space crosstalk distribution obtained after optimization is as follows: Fig.24 As shown, the contour lines from the outside to the inside in the figure are 10% crosstalk boundary, 3% crosstalk boundary, and 0% crosstalk boundary, respectively. The visual space size (represented by horizontal and vertical coordinates) contained in each boundary is shown in the following table.

[0119]

[0120] Embodiment 2

[0121] Compared with the 3D display device provided in Embodiment 1, the 3D display device proposed in this embodiment has the following differences:

[0122] It can be seen from the visible space crosstalk distribution data in the above embodiment that the visible space with zero crosstalk is relatively small; in order to achieve a larger low-crosstalk visible space while reducing the 3D crosstalk distribution in the visible space, the present embodiment sets the cylindrical lens array 2 to a variable focus design, which is described below by taking an in-plant 3D display device as an example;

[0123] In a specific embodiment, a full-screen consistent zoom optimization design is adopted, which specifically means that the focal length of each lens in the cylindrical lens array 2 changes simultaneously, and the focal length of each lens is the same; when a person moves from position 1 to position 2, the focal length of the corresponding cylindrical lens array 2 changes from f1 to f2.

[0124] The following is the specific focal value of the column lens array 2:

[0125] First, according to the same step of calculating the visual spatial crosstalk distribution in the above-mentioned embodiment, the output angle spectrum energy distribution of each sub-pixel 8 at different focal lengths is determined; specifically, such as Fig.28 It is shown that at a focal length of 385 μm, one of the sub-pixels 8 passes through the light-exit angle spectrum of each column lens above; Fig.29 It is shown that at a focal length of 570 μm, one of the sub-pixels 8 passes through the light-exit angle spectrum of each column lens above; Fig.30 It is shown that at a focal length of 845 μm, one of the sub-pixels 8 passes through the light-exit angle spectrum of each column lens above; Fig.28 and Fig.30 It can be seen that when the focal length is small, the central viewing angle of the sub-pixel 8 light emission angle spectrum is relatively divergent relative to the collimated large viewing angle, and when the focal length f is gradually increased, the sub-pixel 8 light emission angle spectrum is gradually collimated, and the center gradually diverges; therefore, the crosstalk distribution of each curvature radius is different. Using the visible space crosstalk distribution data under each curvature radius obtained by the previous design ( Fig.23 , Fig.24 , Fig.25 Only a small part of the database), extract the corresponding radius of curvature / focal length of the minimum crosstalk of the spatial position and record the corresponding minimum crosstalk value of this position, thereby establishing the following Fig.31 The focal length shown is distributed with the visual space and Fig.32 The crosstalk data is shown as a function of the visible space distribution.

[0126] Convert the eyebrow coordinates based on the coordinates of the two eyes in the space, and then use the eyebrow coordinates to call Fig.31 The lens focal length corresponding to the database in the Fig.32 The visible spatial crosstalk distribution effect is shown. ;

[0127] To sum up, this embodiment first determines the coordinates of the human eye position through the human eye tracking system, and then Fig.31 The corresponding lens focal length of the minimum crosstalk corresponding to the coordinate position is found, and the focal length of the cylindrical lens array 2 is adjusted in real time according to the data to ensure that the human eye can see the optimal angular spectrum at any position in the visual space, thereby greatly reducing the 3D crosstalk.

[0128] at the same time, Fig.32 The contour lines from outside to inside are 10% crosstalk boundary, 3% crosstalk boundary, and 0% crosstalk boundary, respectively. The data of the size of the visible space contained in each boundary are shown in the following table. By comparing with the data provided in Example 1, it can be seen that this embodiment can significantly reduce the 3D crosstalk distribution in the visible space by designing its zoom specifications using the zoom column lens array 2, thereby achieving an increase in the low-crosstalk visible space.

[0129]

[0130] In another specific embodiment, in order to more accurately determine the optimal angular spectrum of light output corresponding to each pixel island, thereby further reducing the crosstalk distribution in the visible space and further increasing the low-crosstalk visible space, the present embodiment adopts a regional zoom design. Specifically, the display unit 1 is divided into a plurality of areas as shown in FIG. 30 , and a zoom design is performed on each area separately, wherein the focal lengths of the plurality of areas may be the same or different. For ease of understanding, the following example is given by dividing into 10 areas.

[0131] According to Fig.33 The screen area is divided as shown, and then according to the known spatial angular spectrum energy distribution of each sub-pixel 8 at each focal length, the optimal angular spectrum is selected in the visual space of each area and the visual space crosstalk distribution is calculated, and the lens focal length corresponding to the optimal visual space is established as a database. For example, Fig.34 The database corresponding to the first partition; Fig.35 It is the database corresponding to the second partition, and so on Figure 36-43 The databases corresponding to the third partition to the tenth zone are respectively; then, the databases in the first partition to the tenth zone of the figure can be obtained by using the human eye tracking system to call the databases in the first partition to the tenth zone of the figure, and the visual spatial crosstalk distribution as shown in Figure 44 can be obtained.

[0132] Fig.44 The contour lines from outside to inside are 10% crosstalk boundary, 3% crosstalk boundary, and 0% crosstalk boundary, respectively. The data of the size of the visible space contained in each boundary is shown in the following table. By comparing the data summarized in this table with the data table corresponding to the full-screen uniform zoom design, it can be seen that the 3D crosstalk distribution in the visible space can be further reduced through the regional zoom design, and the increase of the low-crosstalk visible space can be achieved. However, since this embodiment uses a small 13.3-inch screen, the gain effect is not obvious. If a larger screen is used, such as a TV product, the gain effect will be clearly reflected.

[0133]

[0134] In order to realize the above-mentioned zooming process, the 3D display device in this embodiment can adopt the display device with application number: 201610390794.6, or other display devices that can realize the change of lens focal length. Since the structure is all prior art, it will not be described in detail here. In addition, the display device is not limited in this embodiment. As long as the display device has a zooming function, it is applicable to this embodiment and belongs to the protection scope of this embodiment.

[0135] Each embodiment in this specification is described in a progressive manner, and some embodiments focus on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other.

[0136] It should be noted that, in the specification and claims of the present application and the above-mentioned drawings, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or specific order or precedence between these entities or operations. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0137] Moreover, the terms "comprises," "comprising," and "having," and any variations thereof or any other variants thereof, are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus. For example, a process, method, system, product, or apparatus comprising a series of steps or units need not be limited to those steps or units expressly listed, but may include other steps or units not expressly listed or inherent to such process, method, product, or apparatus. In the absence of further limitations, an element defined by the statement "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0138] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0139] The above is only a specific implementation method of the present application, so that those skilled in the art can understand or implement the present application. It will be obvious to those skilled in the art that various modifications and changes to these embodiments, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application. Therefore, the present application will not be limited to the embodiments shown in this article, but will comply with the widest range consistent with the principles and novel features applied for herein.

Claims

1. A 3D display device, characterized in that: include: A display unit and a cylindrical lens array arranged on the light-emitting side of the display unit, wherein the display unit includes a plurality of pixel islands, each of the pixel islands corresponds to at least two cylindrical lenses in the cylindrical lens array, wherein a plurality of sub-pixels covered by each cylindrical lens in a modulation direction are arranged at intervals, so that a gap between every two adjacent sub-pixels is interspersed by light emitted by other sub-pixels in the same pixel island; There is no common divisor between the number of cylindrical lenses corresponding to each pixel island and the number of sub-pixels in each pixel island; The sum of all sub-pixel opening intervals in each pixel island is equal to the sum of the spacings between the corresponding cylindrical lenses, the sub-pixel opening interval is the distance between two adjacent sub-pixels, the distance between two adjacent sub-pixels is the sum of the width of the sub-pixel and the gap between two adjacent sub-pixels, and the spacing between the cylindrical lenses is the width of the cylindrical lenses; The cylindrical lens array is installed on the light-emitting side of the display unit through a spacer layer; When the single viewpoint light output angle θ≤1.125°, the placement height dimension of the cylindrical lens array is as follows: Wherein, T is the placement height of the cylindrical lens array; Ppixel is the opening width of each sub-pixel; and n is the refractive index of the spacer layer.

2. The 3D display device according to claim 1, characterized in that: The cylindrical lens array has a variable focal length.

3. The 3D display device according to claim 1, characterized in that: The outer side of the cylindrical lens array is also wrapped with a flat layer, and the refractive index of the cylindrical lens array is different from the refractive index of the flat layer.

4. The 3D display device according to claim 1, characterized in that: The cylindrical lens array is arranged in a straight row structure.

5. The 3D display device according to claim 1, characterized in that: The lens spacing dimensions in the cylindrical lens array are as follows: Wherein, D is the width of the cylindrical lens; P is the width of the pixel island; and M is the number of cylindrical lenses corresponding to each pixel island.

6. A method for improving image crosstalk distribution, characterized in that: According to any one of claims 1 to 5, the cylindrical lens array has a variable focal length, and the method comprises: Determine the visible space crosstalk distribution data at each curvature radius; Extracting the curvature radius corresponding to the minimum crosstalk at the spatial position, and recording the minimum crosstalk value corresponding to this position, so as to establish a focal length database and a crosstalk database, and store them; Determine the coordinates of the center of the eyebrows, and retrieve the corresponding lens focal length through the focal length database according to the coordinates of the center of the eyebrows; The focal length of the cylindrical lens array is adjusted according to the focal length of the lens.

7. The method for improving image crosstalk distribution according to claim 6, characterized in that: The step of determining the visible space crosstalk distribution data at each curvature radius specifically includes: Calculate the light output angle and corresponding brightness value of each sub-pixel at each curvature radius to generate an angular spectrum database and store it; Determine the angle ranges of each pixel island within the left eye's viewing range and the right eye's viewing range respectively, retrieve the sub-pixels in the corresponding pixel islands through the angular spectrum database, turn on the sub-pixels in the corresponding pixel islands retrieved above, and turn off the remaining sub-pixels; The corresponding brightness values ​​of the turned-on sub-pixels are retrieved through the angular spectrum database and the crosstalk distribution data of the entire visible space is calculated.

8. The method for improving image crosstalk distribution according to claim 7, characterized in that: The step of calculating the light emission angle and the corresponding light brightness value of each sub-pixel at each curvature radius to generate an angular spectrum database and store it specifically includes: The display unit is divided into a plurality of partitions, and the light emission angle and the corresponding light brightness value of each sub-pixel in each partition at each curvature radius are calculated to generate an angular spectrum database and store it.

9. The method for improving image crosstalk distribution according to claim 7, characterized in that: The crosstalk distribution of the entire visual space is as follows: The left eye crosstalk distribution value is the ratio of the sum of the brightness values ​​emitted by the sub-pixels within the viewing range of the right eye received by the left eye to the sum of the brightness values ​​emitted by the sub-pixels within the viewing range of the left eye received by the left eye; The right eye crosstalk distribution value is the ratio of the sum of the brightness values ​​emitted by the sub-pixels within the viewing range of the left eye received by the right eye to the sum of the brightness values ​​emitted by the sub-pixels within the viewing range of the right eye received by the right eye.

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