Display device

Abstract

The present invention provides a display device. The display device includes a display panel and a light splitting element disposed on the display side of the display panel. The display panel includes a plurality of pixel islands arranged in an array along a row direction and a column direction. Each pixel island includes a plurality of sub-pixels arranged at intervals along the row direction. The light splitting element extends along the column direction and includes a plurality of light splitting repeating units continuously arranged along the row direction. The light splitting repeating unit extends along the column direction and includes M light splitting structures continuously arranged along the row direction. Each light splitting repeating unit covers corresponding N columns of sub-pixels. Both M and N are integers greater than 1, and M and N are relatively prime to each other.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and in particular, to a display device.

Background Art

[0002] With the continuous development of display technologies, three-dimensional (3D) display technologies have been attracting increasing attention. With 3D display technologies, display images can be made three-dimensional and realistic. The principle is that when the left eye and the right eye of a human receive left-eye images and right-eye images with a certain parallax respectively, and the brain overlaps and fuses the received parallax images, a visual display effect of 3D images is constructed. In order to realize the compatibility between super multi-view 3D display and light field display, conventional sub-pixels are converted into pixel island structures. Each pixel island includes a plurality of sub-pixels. The display information of the plurality of sub-pixels is different. When a single eye enters multiple viewpoints, a normal light field display is realized. When the display information of the plurality of sub-pixels is different and a single eye enters a single viewpoint, a super multi-view light field 3D display can be realized.

[0003] However, existing 3D display products have problems such as low aperture ratio and large crosstalk between views.

Summary of the Invention

[0004] The display device provided by an embodiment of the present invention includes a display panel, and a light splitting element disposed on the display side of the display panel, wherein the display panel includes a plurality of pixel islands arranged in an array along a row direction and a column direction, and each pixel island includes a plurality of sub-pixels arranged at intervals along the row direction, The optical splitting element includes a plurality of optically splitting repeating units that extend along the column direction and are continuously arranged along the row direction. Each optically splitting repeating unit includes M optically splitting structures that extend along the column direction and are continuously arranged along the row direction. Each optically splitting repeating unit covers corresponding N columns of sub-pixels, where both M and N are integers greater than 1, and M and N are relatively prime to each other.

[0005] In some embodiments, each optically splitting repeating unit corresponds to K columns of pixel islands, where K is an integer greater than 1.

[0006] In some embodiments, N and K are relatively prime to each other.

[0007] In some embodiments, N / K is an integer.

[0008] In some embodiments, each pixel island includes n sub-pixels arranged at intervals along the row direction, where n is an integer greater than 1. Each optically splitting repeating unit covers corresponding K columns of pixel islands, where both M and K are integers greater than 1, N = K * n, and M and K are relatively prime to each other.

[0009] In some embodiments, after the light emitted from the light-emitting regions of the N columns of sub-pixels is split by the M optically splitting structures, a spatially continuous light-emitting region is formed.

[0010] In some embodiments, in the horizontal direction, the widths of the M optically splitting structures are equal to the widths of the N columns of sub-pixels.

[0011] In some embodiments, the sub-pixel includes a sub-pixel opening region. In the row direction, the ratio of the total width of the n sub-pixel opening regions to the width of the pixel island is 0.9 / M or more and 1 or less.

[0012] In some embodiments, in the row direction, the light-emitting regions of the N columns of sub-pixels are spatially complementarily joined.

[0013] In some embodiments, in the row direction, the ratio of the width of the sub-pixel aperture region to the width of the pixel island is 1 / M.

[0014] In some embodiments, in the row direction, the light-emitting regions of the sub-pixels in N columns are spatially overlapping.

[0015] In some embodiments, in the row direction, the light-emitting regions of the sub-pixels in N columns are spatially uniformly overlapping.

[0016] In some embodiments, in the row direction, the ratio of the width of the sub-pixel aperture region to the width of the pixel island is i / M, where i is an integer greater than 1 and less than or equal to M - 1.

[0017] In some embodiments, in the row direction, the absolute value of the difference in the widths of different sub-pixel aperture regions is 2.5 μm or less.

[0018] In some embodiments, the display device further includes a spacer dielectric layer disposed between the light splitting element and the display panel.

[0019] In some embodiments, the light splitting structure is a cylindrical lens.

[0020] In some embodiments, the cylindrical lens includes a first resin layer having protrusions and a planarization resin layer disposed on the side of the first resin layer away from the display panel, and the refractive index of the planarization resin layer is smaller than the refractive index of the first resin layer.

[0021] In some embodiments, the cylindrical lens is a liquid crystal lens.

[0022] In some embodiments, the radius of curvature of the cylindrical lens is 0.87r or more and 1.33r or less, where

[0023]

Number

[0024] n1 is the refractive index of the first resin layer or the e - light refractive index of the liquid crystal lens, n2 is the refractive index of the planarization resin layer or the o - light refractive index of the liquid crystal lens, n3 is the refractive index of the spacer dielectric layer, L1 is the optimal viewing distance of the display device, P1 is the width of the cylindrical lens in the row direction, and W is the projected width of the main lobe viewing angle formed by the light emitted from the sub - pixel at the optimal viewing distance.

[0025] In some embodiments, M is 4, N is 127, M is 4, N is 185, or M is 5, N is 16, or M is 5, N is 32, or M is 5, N is 64, or M is 5, N is 128.

[0026] In some embodiments, M is 5, K is 4, n is 4, M is 5, K is 4, n is 16, or M is 3, K is 4, n is 32, or M is 5, K is 2, n is 16.

[0027] In some embodiments, every three of the pixel islands continuously arranged in the column direction form one pixel repetition unit. Within one pixel repetition unit, the display colors of the sub - pixels of the same pixel island are the same, and the display colors of the sub - pixels of different pixel islands are different.

[0028] In some embodiments, the display device further includes an eye - tracking system used to determine the position of the user's eyes in real - time.

Brief Description of the Drawings

[0029] To more clearly explain the technical solutions in the embodiments of the present invention, the drawings necessary for the description of the embodiments are briefly introduced below. Obviously, the drawings in the following description are only some embodiments. A person of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Embodiments for Carrying Out the Invention

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians based on the described embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0031] Unless otherwise defined, technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by ordinary technicians in the technical field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "contain" mean that the elements or things appearing before such words include the elements or things listed after such words and their equivalents without excluding other elements or things. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, and may include direct or indirect electrical connections. "Upper", "lower", "left", "right", etc. are only used to express relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may change accordingly.

[0032] Note that the sizes and shapes of the figures in the drawings do not reflect actual dimensions, but are only for explaining the present invention. Throughout the drawings, the same or similar reference numerals indicate the same or similar elements, or elements having the same or similar functions.

[0033] Conventionally, as shown in FIG. 1, a display device includes a plurality of pixel islands S arranged at intervals along a row direction X and a column direction Y, and a plurality of cylindrical lenses Z. Each pixel island S includes a plurality of sub-pixels 08 arranged at intervals along the row direction X. One column of pixel islands S corresponds to M cylindrical lenses Z. In FIG. 1, m = 2. The aperture ratio of the sub-pixels in the row direction is 1 / m. However, when the number of m increases, the horizontal aperture ratio of the sub-pixels decreases. And when the sub-pixel openings fluctuate, that is, there are deviations in the sub-pixel openings at different positions, moiré is likely to occur. The greater the sub-pixel opening deviation, the higher the risk of moiré. Even if the aperture ratio of the sub-pixels is increased and the aperture ratio of the sub-pixels in the row direction is made larger than 1 / m, when the number of cylindrical lenses increases, the size of the cylindrical lenses in the row direction gradually becomes smaller, making the manufacture of the cylindrical lenses difficult. Due to diffraction by small cylindrical lenses, the light divergence angle of the sub-pixels increases, the crosstalk between views increases, and the display effect is affected. Also, when the number of cylindrical lenses increases and miniaturization occurs, the focal length of the cylindrical lenses becomes smaller, so at the same time, it is necessary to lower the arrangement height of the cylindrical lenses. For a liquid crystal display panel, it is difficult to realize a structure with too small an arrangement height. Also, when the horizontal aperture ratio of the sub-pixels becomes large, the light emitted from each viewing point overlaps, crosstalk occurs, the parallax images overlap, and the display becomes blurred.

[0034] To address the above technical problems existing in the related art, an embodiment of the present invention provides a display device including, as shown in FIG. 2, a display panel 01 and a splitting element 02 located on the display side of the display panel 01.

[0035] The display panel 01 includes a plurality of pixel islands S arranged in an array along the row direction X and the column direction Y. Each pixel island S includes a plurality of sub-pixels 08 arranged at intervals along the row direction X.

[0036] The light splitting element 02 includes a plurality of light splitting repeating units 03 that extend along the column direction Y and are continuously arranged along the row direction X. The light splitting repeating unit 03 includes M light splitting structures A that extend along the column direction Y and are continuously arranged along the row direction X. Each light splitting repeating unit covers corresponding N columns of sub-pixels, where both M and N are integers greater than 1, and M and N are relatively prime to each other.

[0037] In the display device provided by an embodiment of the present invention, the M light splitting structures cover corresponding N columns of sub-pixels, where both M and N are integers greater than 1. That is, the light splitting structures and the sub-pixels have a many-to-many correspondence relationship. Thereby, it is possible to avoid the size of the light splitting structure in the row direction being too small, avoid an increase in the difficulty of preparing the light splitting components, and also avoid an increase in the light divergence angle of the sub-pixels due to diffraction of the light splitting structure with too small a size, an increase in crosstalk between views, and an impact on the display effect.

[0038] The display device provided by an embodiment of the present invention is applicable to three-dimensional (3D) display and can also realize the switching between 3D display and 2D display. The pixel islands can be used as sub-pixels for 2D display. Since a plurality of sub-pixels are included in one pixel island, the same resolution as that of 2D display can be maintained even in the 3D display mode. By combining an eye-tracking system, a multi-view display with a wide viewing angle can be realized. Furthermore, a 3D display with a large number of pixels per inch (ppi) can be realized, more information can be obtained, and color crosstalk between adjacent viewpoints can be reduced.

[0039] In a specific embodiment, the light splitting structure is used to control the emission angle of each sub-pixel and emits light with directivity.

[0040] In certain embodiments, the display panel is one of a liquid crystal display panel (LCD), an organic light emitting diode (OLED) display panel, a quantum dot light emitting diode (QLED), a micro inorganic light emitting diode (micro LED) display panel, and a mini light emitting diode (mini LED) display panel.

[0041] In some embodiments, as shown in FIG. 2, every three pixel islands S continuously arranged in the column direction Y form a pixel repetition unit 04.

[0042] In one pixel repetition unit 04, the sub-pixels 08 of the same pixel island S have the same display color, and the sub-pixels 08 of different pixel islands S have different display colors.

[0043] In some embodiments, as shown in FIG. 2, one pixel repetition unit 04 includes a first pixel island 05, a second pixel island 06, and a third pixel island 07. The first pixel island 05 includes a plurality of red sub-pixels R, the second pixel island 06 includes a plurality of green sub-pixels G, and the third pixel island 07 includes a plurality of blue sub-pixels B.

[0044] In some embodiments, as shown in FIG. 2, the display colors of the sub-pixels 08 in one row of pixel islands S are the same.

[0045] In some embodiments, as shown in FIG. 2, each light splitting repetition unit 03 corresponds to K columns of pixel islands S.

[0046] In the display device provided by the embodiments of the present invention, M light splitting structures correspond to K columns of pixel islands. Both M and K are integers greater than 1. That is, the light splitting structure and the columns of pixel islands have a many-to-many correspondence relationship. Thereby, it is possible to avoid the size of the light splitting structure in the row direction being too small, and it is possible to avoid an increase in the difficulty of preparing the light splitting components. Also, it is possible to avoid an increase in the light divergence angle of the sub-pixels due to diffraction of the light splitting structure with too small a size, an increase in crosstalk between views, and an impact on the display effect.

[0047] In some embodiments, as shown in FIG. 2, N / K is an integer. That is, the N columns of sub-pixels corresponding to the M optical splitting units can be evenly divided into multiple columns of pixel islands.

[0048] In a specific embodiment, as shown in FIG. 2, each pixel island S includes n sub-pixels 08 arranged at intervals along the row direction X. Here, n is an integer greater than 1, and each optical splitting repeating unit covers the corresponding K columns of pixel islands, and S, N = K * n. K is an integer greater than 1, and M and K are relatively prime to each other.

[0049] In some embodiments, N and K are relatively prime to each other. That is, the N columns of sub-pixels corresponding to the M spectroscopic units cannot be evenly divided into multiple columns of pixel islands.

[0050] As shown in FIG. 2, each optical splitting repeating unit corresponding to the K columns of pixel islands may be such that each optical splitting repeating unit 03 covers the K columns of pixel islands S. Of course, in a specific embodiment, each optical splitting repeating unit corresponding to the K columns of pixel islands may be such that at least one pixel island located at the edge is only partially covered by the optical splitting repeating unit, that is, the entire K columns of pixel islands are not covered by the optical splitting repeating unit. When the entire K columns of pixel islands are not covered by the optical splitting repeating unit, when designing M, N, and K of the display device, N and K may be relatively prime to each other.

[0051] In a specific embodiment, even when the N columns of sub-pixels corresponding to the M optical splitting units cannot be evenly divided into multiple columns of pixel islands, the optical splitting units and the pixel islands still have a many-to-many relationship, thereby avoiding the size of the optical splitting structure in the row direction from being too small, avoiding an increase in the difficulty of preparing the optical splitting components, and also avoiding an increase in the light divergence angle of the sub-pixels due to diffraction of the optical splitting structure with too small a size, an increase in crosstalk between views, and an impact on the display effect.

[0052] In some embodiments, in the horizontal direction, the width of the M optical splitting structures is equal to the width of the N columns of sub-pixels.

[0053] In some embodiments, the light-emitting regions of the sub-pixels among the N columns of sub-pixels are spatially shifted and arranged, and after the light emitted from the light-emitting regions of the N columns of sub-pixels is split by the M optical splitting structures, a spatially continuous light-emitting region is formed.

[0054] In the display device provided by the embodiments of the present invention, the N columns of sub-pixels of the present invention are covered by M optical splitting structures, and the light-emitting regions of the sub-pixels among the N columns of sub-pixels are spatially shifted and arranged. Since the size of the spectral splitting structure in the row direction is small, for the N columns of sub-pixels covered by the M spectral splitting structures, the human eye cannot distinguish which spectral splitting structure specifically emits light. To the human eye, the light emitted from the N columns of sub-pixels seems to form a spatially continuous light-emitting region after being split by the M optical splitting structures above it, but the human eye cannot see a "black zone" when moving within the visible space.

[0055] In some embodiments, the sub-pixel includes a sub-pixel aperture region, and in the row direction, the ratio of the total width of the n sub-pixel aperture regions to the width of the pixel island is 0.9 / M or more and 1 or less. That is, the aperture ratio of the sub-pixels within the pixel island is 0.9 / M or more and 1 or less.

[0056] In some embodiments, in the row direction, the light-emitting regions of the N columns of sub-pixels are spatially complementarily joined.

[0057] In some embodiments, in the row direction, the ratio of the width of the sub-pixel aperture region to the width of the pixel island is 1 / M. That is, the aperture ratio of the sub-pixels within the pixel island is 1 / m. With such an arrangement, the sub-pixels under each spectroscopic repetition unit can be offset and complementarily arranged with respect to the position of the corresponding spectroscopic structure. As a result, the light-emitting regions of the N columns of sub-pixels are spatially complementarily joined. That is, the optical paths of each viewing point are closely connected, moiré patterns are removed, and the display effect is improved.

[0058] In some embodiments, in the row direction, the light-emitting regions of the N columns of sub-pixels spatially overlap.

[0059] In some embodiments, in the row direction, the light-emitting regions of the N columns of sub-pixels spatially overlap uniformly.

[0060] In some embodiments, in the row direction, the ratio of the width of the sub-pixel aperture region to the width of the pixel island is i / M, where i is an integer greater than 1 and less than or equal to M-1.

[0061] It should be noted that in the display device provided by the embodiments of the present invention, M spectroscopic structures correspond to N columns of sub-pixels, and M spectroscopic structures correspond to K columns of pixel islands. At the same time, that is, the sub-pixels and the spectroscopic structures are in a many-to-many relationship, and at the same time, the pixel islands and the spectroscopic structures are in a many-to-many relationship. When the widths of the M spectroscopic structures in the row direction are equal to the widths of the N columns of sub-pixels, even if the number of spectroscopic structures increases, the size of the spectroscopic structures in the row direction is too small to make manufacturing difficult. When the aperture ratio of the sub-pixels is i / M and i is an integer greater than 1 and less than or equal to M-1, compared with the prior art situation where the pixel islands and the spectroscopic structures have a many-to-many relationship, if the number of spectroscopic structures is the same, the aperture ratio of the sub-pixels can be increased.

[0062] In a specific embodiment, when each spectroscopic repetition unit corresponds to K columns of pixel islands and N = K*n, the widths of the N columns of sub-pixels are the widths of the K columns of pixel islands, and in the horizontal direction, the widths of the M spectroscopic structures are equal to the widths of the K columns of pixel islands.

[0063] In a specific embodiment, when each optical splitting repeating unit corresponds to K columns of pixel islands and N = K * n, since the light emitting regions of each sub-pixel in the K pixel islands are spatially shifted and arranged, the light emitted from each sub-pixel in the K pixel islands is split by M optical splitting structures to form a spatially continuous light emitting region.

[0064] It should be noted that the space in "the light emitting regions of each sub-pixel in the K pixel islands are spatially shifted and arranged" refers to the visible space of the display device.

[0065] In the display device provided by the embodiment of the present invention, the K pixel islands are covered by M optical splitting structures, and the light emitting regions of each sub-pixel in the K pixel islands are spatially shifted and arranged. Since the size of the spectral splitting structure in the row direction is small, for the K pixel islands covered by the M optical splitting structures, the human eye cannot distinguish which spectral splitting structure specifically emits light. Therefore, to the human eye, the light emitted by the K pixel islands is seen to be split by the M optical splitting structures to form a spatially continuous light emitting region, and the human eye cannot see a "black zone" when moving within the visible space.

[0066] It should be noted that the viewing angle includes a main lobe viewing angle and a side lobe viewing angle. The main lobe viewing angle refers to the viewing angle formed in space after the light emitted by the sub-pixel is split by the optical splitting structure directly above the sub-pixel. The side lobe viewing angle refers to the viewing angle formed in space after the light emitted by the sub-pixel passes through the optical splitting structure near the optical splitting structure directly above the sub-pixel. For example, when the light passes through the first optical splitting structure adjacent to the optical splitting structure directly above the sub-pixel, a primary side lobe viewing angle is formed, and when the light passes through the second optical splitting structure adjacent to the optical splitting structure directly above the sub-pixel, a secondary side lobe viewing angle is formed, and so on.

[0067] To better understand this solution, taking the viewing angle of the main lobe as an example, each optical splitting repetition unit corresponds to K columns of pixel islands, N = K * n, the light-emitting regions of each sub-pixel in the K pixel islands are spatially shifted and arranged, and after the emitted light from the light-emitting regions of each sub-pixel in the K pixel islands is split by M optical splitting structures, a spatially continuous light-emitting region is formed, which will be described.

[0068] In a specific embodiment, among the M optical splitting structures arranged in the row direction, among the plurality of sub-pixels corresponding to each optical splitting structure, the difference in the viewing points of two adjacent sub-pixels is M.

[0069] In some embodiments, K = 4, M = 5, and n = 4. The optical path diagrams of the pixel islands in the K columns are as shown in FIGS. 3 and 4. The four pixel islands corresponding to the five light splitting structures each include 16 sub-pixels marked as the 1st sub-pixel 1 to the 16th sub-pixel 16. The serial number of each sub-pixel represents its corresponding viewing point. The four pixel islands are the 1st pixel island S1, the 2nd pixel island S2, the 3rd pixel island S3, and the 4th pixel island S4. The 1st pixel island S1 includes the 1st sub-pixel 1, the 6th sub-pixel 6, the 11th sub-pixel 11, and the 16th sub-pixel 16. The 2nd pixel island S2 includes the 5th sub-pixel 5, the 10th sub-pixel 10, the 15th sub-pixel 15, and the 4th sub-pixel 4. The 3rd pixel island S3 includes the 9th sub-pixel 9, the 14th sub-pixel 14, the 3rd sub-pixel 3, and the 8th sub-pixel 8. The 4th pixel island S4 includes the 13th sub-pixel 13, the 2nd sub-pixel 2, the 7th sub-pixel 7, and the 12th sub-pixel 12. The light splitting structures corresponding to the 16 sub-pixels are respectively marked as the 1st light splitting structure A1 to the 5th light splitting structure A5. As shown in FIG. 3, the 1st light splitting structure A1 covers the 1st sub-pixel 1, the 6th sub-pixel 6, the 11th sub-pixel 11, and the 16th sub-pixel 16. The 2nd light splitting structure A2 covers the 5th sub-pixel 5, the 10th sub-pixel 10, and the 15th sub-pixel 15. The 3rd light splitting structure A3 covers the 4th sub-pixel 4, the 9th sub-pixel 9, and the 14th sub-pixel 14. The 4th light splitting structure A4 covers the 3rd sub-pixel 3, the 8th sub-pixel 8, and the 13th sub-pixel 13. The 5th light splitting structure A5 covers the 2nd sub-pixel 2, the 7th sub-pixel 7, and the 12th sub-pixel 12. As shown in FIG. 3, the relative positional relationship between each sub-pixel and the light splitting structure in the four pixel islands does not form a repeating unit. When the sub-pixels are connected in order according to the viewing point, the relative position between each sub-pixel and the light splitting structure remains unchanged. As shown in FIG. 4, after the sub-pixels corresponding to each light splitting structure are joined, the positions of the sub-pixels become complementary. The gap between each sub-pixel is 0, and the relative positional relationship with the light splitting structure forms a complementary array with a shift in position. Correspondingly, the light emitting regions of each sub-pixel in the four pixel islands are spatially shifted and arranged.In addition, the light-emitting regions of the sub-pixels within the four pixel islands form a spatially shifted complementary array. As shown in FIG. 3, since there is a gap between the first sub-pixel 1 and the fifth sub-pixel 5, the light emitted from adjacent sub-pixels corresponding to the same light splitting structure has a discontinuous emission angle in space after passing through the same light splitting structure. However, since the relative positions of the sub-pixels within the four pixel islands and the five light splitting structures A are shifted, the light-emitting regions of the sub-pixels within the four pixel islands are spatially shifted and arranged, and the emission angles of each light splitting structure A are also shifted and are complementary. Since the size of the light splitting structure A is very small, it is impossible for the human eye to distinguish from which spectral structure A the light is emitted. Therefore, as shown in FIG. 4, to the human eye, the light emitted from the 16 sub-pixels within the four pixel islands, after being split by the five light splitting structures, appears to form a temporally continuous light-emitting region, and the "black zone" cannot be seen by the human eye moving in space.

[0070] The continuity of the side lobe viewing angle is the same as the continuity of the main lobe viewing angle described above. The two discontinuous primary side lobe viewing angles of the K pixel islands passing through adjacent light splitting structures become continuous primary side lobe viewing angles by complementing each other. Also, since the width of the M light splitting structures in the horizontal direction is equal to the width of the K columns of pixel islands, the main lobe viewing angle boundary is parallel to the side lobe viewing angle boundary. Since the human eye cannot distinguish the distance between the main lobe viewing angle boundary and the side lobe viewing angle boundary, the main lobe viewing angle and the side lobe viewing angle also appear to be continuous. Similarly, the primary side lobe viewing angle and the secondary side lobe viewing angle are continuous, and the secondary side lobe viewing angle and the tertiary side lobe viewing angle are also continuous. In this way, a continuous viewing angle is obtained.

[0071] In some embodiments, the sub-pixel includes a sub-pixel aperture region. As shown in FIG. 3, in the row direction X, the widths of the aperture regions of each sub-sub-pixel 08 are the same and are h1.

[0072] In some embodiments, in the row direction, the ratio of the total width n×h1 of n sub-pixel aperture regions to the width h2 of the pixel island is 0.9 / M or more and 1 or less. That is, the aperture ratio of the sub-pixels within the pixel island is 0.9 / M or more and 1 or less.

[0073] In some embodiments, as shown in FIGS. 3 and 4, in the row direction X, the light-emitting regions of N columns of sub-pixels 08 are spatially complementarily joined. That is, the light-emitting regions of each sub-pixel 08 within K pixel islands 1 are spatially complementarily joined.

[0074] In some embodiments, as shown in FIG. 3, in the row direction X, the ratio of the total width of n sub-pixel 08 aperture regions to the width of pixel island 1 is 1 / M. That is, the aperture ratio of the sub-pixels within the pixel island is 1 / m. With such an arrangement, the sub-pixels under each spectroscopic repetition unit can be offset and complementarily arranged with respect to the position of the corresponding spectroscopic structure. With such an arrangement, the light-emitting regions of each sub-pixel within K pixel islands are spatially complementarily joined. That is, the optical paths of each viewpoint are closely connected, the moiré pattern is removed, and the display effect is improved.

[0075] In some embodiments, as shown in FIGS. 5 and 6, in the row direction, the light-emitting regions of each sub-pixel within K pixel islands spatially overlap.

[0076] In some embodiments, as shown in FIGS. 5 and 6, in the row direction, the light-emitting regions of each sub-pixel within K pixel islands spatially overlap uniformly.

[0077] Next, taking the viewing angle of the main lobe as an example, an example will be given and described in which the light emitted from the light-emitting regions of each sub-pixel within K pixel islands is split by M light splitting structures and then forms a spatially continuous light-emitting region.

[0078] In some embodiments, K is 4, M is 5, and n is 4. The optical path diagrams of the pixel islands in the K columns are as shown in FIGS. 5 and 6. The four pixel islands corresponding to the five optical splitting structures each include 16 sub-pixels marked as the 1st sub-pixel 1 to the 16th sub-pixel 16. The serial number of each sub-pixel represents its corresponding viewing point. Each of the four pixel islands is the 1st pixel island S1, the 2nd pixel island S2, the 3rd pixel island S3, and the 4th pixel island S4. The 1st pixel island S1 includes the 1st sub-pixel 1, the 6th sub-pixel 6, the 11th sub-pixel 11, and the 16th sub-pixel 16. The 2nd pixel island S2 includes the 5th sub-pixel 5, the 10th sub-pixel 10, the 15th sub-pixel 15, and the 4th sub-pixel 4. The 3rd pixel island S3 includes the 9th sub-pixel 9, the 14th sub-pixel 14, the 3rd sub-pixel 3, and the 8th sub-pixel 8. The 4th pixel island S4 includes the 13th sub-pixel 13, the 2nd sub-pixel 2, the 7th sub-pixel 7, and the 12th sub-pixel 12. Each of the optical splitting structures corresponding to the 16 sub-pixels is marked as the 1st optical splitting structure A1 to the 5th optical splitting structure A5. Here, as shown in FIG. 5, the 1st optical splitting structure A1 covers the 1st sub-pixel 1, the 6th sub-pixel 6, the 11th sub-pixel 11, and a part of the 16th sub-pixel 16. The 2nd optical splitting structure A2 covers a part of the 16th sub-pixel 16, the 5th sub-pixel 5, the 10th sub-pixel 10, and a part of the 15th sub-pixel 15. The 3rd optical splitting structure A3 covers a part of the 15th sub-pixel 15, the 4th sub-pixel 4, the 9th sub-pixel 9, and a part of the 14th sub-pixel 14. The 4th optical splitting structure A4 covers a part of the 14th sub-pixel 14, the 3rd sub-pixel 3, the 8th sub-pixel 8, and the 13th sub-pixel 13. The 5th optical splitting structure A5 covers the 2nd sub-pixel 2, the 7th sub-pixel 7, and the 12th sub-pixel 12. As shown in FIG. 5, the relative positional relationship between each sub-pixel and the optical splitting structure in the four pixel islands does not form a repeating unit. When the sub-pixels are connected in order according to the viewing point, the relative position between each sub-pixel and the optical splitting structure remains unchanged. As shown in FIG. 4, after the sub-pixels corresponding to each optical splitting structure are joined, the positions of the sub-pixels overlap, and the relative positional relationship with the optical splitting structure forms an overlapping arrangement while shifting.Therefore, the light-emitting regions of the sub-pixels within the four pixel islands are spatially shifted and arranged. The light-emitting regions of the sub-pixels within the four pixel islands form a spatially shifted complementary array, as shown in FIG. 5. Since there is a gap between the first sub-pixel 1 and the fifth sub-pixel 5, the light emitted from adjacent sub-pixels corresponding to the same light splitting structure has a discontinuous emission angle in space after passing through the same light splitting structure. However, because of the relationship of the relative positions of the sub-pixels within the four pixel islands and the five light splitting structures A being shifted and overlapping, the light-emitting regions of the sub-pixels within the four pixel islands are arranged to spatially overlap uniformly. Therefore, the emission angles of each light splitting structure A are also shifted and overlap uniformly. Since the size of the light splitting structure A is very small, it is impossible for the human eye to distinguish which light splitting structure A the light comes from. Therefore, as shown in FIG. 6, to the human eye, the light emitted from the 16 sub-pixels within the four pixel islands, after being split by the five light splitting structures, appears to form a temporally continuous light-emitting region, and the "black zone" cannot be seen by the human eye moving in space.

[0079] In some embodiments, as shown in FIG. 5, in the row direction, the ratio of the total width n×h1 of the n sub-pixel aperture regions to the width h2 of the pixel island is i / M, where i is an integer greater than 1 and less than or equal to M - 1. That is, the aperture ratio of the sub-pixels within the pixel island is i / M. With such an arrangement, the sub-pixels under each light splitting repeating unit can be shifted relative to the position of the corresponding light splitting structure and arranged to overlap uniformly. As a result, the light-emitting regions of the sub-pixels within the K pixel islands overlap spatially uniformly, that is, the optical paths of each viewing point overlap equally, so the moiré pattern is removed and the display effect is improved.

[0080] In a specific embodiment, when the light-emitting regions of each sub-pixel within K pixel islands spatially overlap uniformly, the ratio of the area of the overlapping region between the light-emitting regions of two adjacent sub-pixels with adjacent serial numbers to the area of the light-emitting region of one of the sub-pixels is (i - 1) / i. The ratio of the area of the overlapping region between the light-emitting regions of two adjacent sub-pixels with adjacent serial numbers to the area of one of the sub-pixels is (i - 1) / M.

[0081] When the ratio of the total width n×h1 of the opening regions in the row direction of n sub-pixels to the width h2 of the pixel island is 1 / M, that is, when i = 1, there is no spatial overlap in the light-emitting regions of each sub-pixel. When i = 2, the ratio of the area of the overlapping region between the light-emitting regions of two adjacent sub-pixels with adjacent serial numbers to the area of the light-emitting region of one of the sub-pixels is 1 / 2, and the ratio of the area of the overlapping region between the light-emitting regions of two adjacent sub-pixels with adjacent serial numbers to the area of one of the sub-pixels is 1 / M. When i = 3, the ratio of the area of the overlapping region between the light-emitting regions of two adjacent sub-pixels with adjacent serial numbers to the area of the light-emitting region of one of the sub-pixels is 2 / 3, and the ratio of the area of the overlapping region between the light-emitting regions of two adjacent sub-pixels with adjacent serial numbers to the area of one of the sub-pixels is 2 / M. When i = 4, the ratio of the area of the overlapping region between the light-emitting regions of two adjacent sub-pixels with adjacent serial numbers to the area of the light-emitting region of one of the sub-pixels is 3 / 4, and the ratio of the area of the overlapping region between the light-emitting regions of two adjacent sub-pixels with adjacent serial numbers to the area of one of the sub-pixels is 3 / M. When i = M - 1, the ratio of the area of the overlapping region between the light-emitting regions of two adjacent sub-pixels with adjacent serial numbers to the area of the light-emitting region of one of the sub-pixels is (M - 2) / (M - 1), and the ratio of the area of the overlapping region between the light-emitting regions of two adjacent sub-pixels with adjacent serial numbers to the area of one of the sub-pixels is (M - 2) / M. Since it can be analogized in this way, no further details will be described.

[0082] In the display device provided by an embodiment of the present invention, M light splitting structures correspond to K columns of pixel islands, and both M and K are integers greater than 1. That is, the pixel islands and the light splitting structures have a many-to-many relationship. When the width of the M light splitting structures in the row direction is equal to the width of the K columns of pixel islands, even if the number of light splitting structures increases, the size of the light splitting structures in the row direction is not too small to make manufacturing difficult. Also, when the aperture ratio of the sub-pixels in the pixel island is i / M, where i is an integer greater than 1 or less than or equal to M - 1, compared with the conventional situation where the sub-pixels and the light splitting structures are one-to-many, if the number of light splitting structures is the same, the aperture ratio of the sub-pixels can be increased.

[0083] It should be noted that, as an example, FIG. 5 takes the ratio of the total width of n sub-pixel aperture regions in the row direction to the width of the pixel island as (M - 1) / M. That is, the aperture ratio of the sub-pixels in the pixel island in FIG. 5 is 4 / 5. When the aperture ratio of the sub-pixels in the pixel island is (M - 1) / M, under the condition that the light emitting regions of each sub-pixel in the K pixel islands in the row direction spatially and uniformly overlap, the aperture ratio of the sub-pixels can be maximally improved. Of course, in a specific embodiment, the aperture ratio of the sub-pixels in the pixel island may be 2 / M, 3 / M, etc.

[0084] In some embodiments, M is 4 and N is 127, or M is 4 and N is 185, or M is 5 and N is 16, or M is 5 and N is 32, or M is 5 and N is 64, or M is 5 and N is 128.

[0085] In a specific embodiment, when N = K * n, for example, M is 5, N is 16, K is 4, and n is 4, or M is 5, N is 64, K is 4, and n is 16, or M is 3, N is 128, K is 4, and n is 32, or M is 5, K is 2, and n is 16.

[0086] In some embodiments, as shown in FIG. 7, the display device further includes a spacer dielectric layer 09 located between the light splitting element 02 and the display panel 01.

[0087] In some embodiments, the optical splitting structure is a cylindrical lens.

[0088] In some embodiments, as shown in FIG. 7, the cylindrical lens 010 includes a first resin layer 011 having protrusions and a planarizing resin layer 01 disposed on a side of the first resin layer 011 away from the display panel 01. The refractive index of the planarizing resin layer 012 is smaller than the refractive index of the first resin layer 011.

[0089] Alternatively, in some embodiments, the cylindrical lens is a liquid crystal lens.

[0090] Of course, in certain embodiments, the optical splitting structure may be a geometric lens, a diffractive lens, a liquid lens, and other structural devices that enable control of the light emission direction from the sub-pixels.

[0091] In some embodiments, the arrangement height of the optical splitting structure, i.e., the thickness H of the spacer dielectric layer 106, satisfies the following conditions.

[0092]

Equation

[0093] Here, L1 is the optimal viewing distance of the display device, and W is the projection width of the main lobe viewing angle formed by the light emitted from the sub-pixels at the optimal viewing distance. That is, W is the sum of the widths of the viewpoints without repeated viewpoints at the optimal viewing distance. n3 is the refractive index of the spacer dielectric layer.

[0094] In some embodiments, the cylindrical lens includes a first resin layer having protrusions and a planarizing resin layer disposed on a side of the first resin layer away from the display panel. The refractive index of the planarizing resin layer is smaller than the refractive index of the first resin layer.

[0095] Alternatively, in some embodiments, the cylindrical lens is a liquid crystal lens.

[0096] In some embodiments, the radius of curvature R of the cylindrical lens is not less than 0.87r and not more than 1.33r, where

[0097] [Number]

[0098] where n1 is the refractive index of the first resin layer or the e - light refractive index of the liquid crystal lens, n2 is the refractive index of the planarization resin layer or the o - light refractive index of the liquid crystal lens, n3 is the refractive index of the spacer dielectric layer, and H is the thickness of the spacer dielectric layer.

[0099] [Number]

[0100] is the ideal value of the radius of curvature of the cylindrical lens obtained according to the ideal lens focal plane design, that is, the value at which the pixel light - emitting surface is located on the lens focal plane. In a specific embodiment, the radius of curvature of the cylindrical lens can be adjusted according to the ideal value of the radius of curvature according to actual needs.

[0101] Next, taking the optical splitting structure as a cylindrical lens as an example, the parameter design of the optical splitting structure of the display device provided by the embodiments of the present invention will be introduced.

[0102] In a specific embodiment, when N = K*n, for example, when K = 4, M = 5, n = 16, and N = 64, the display device includes a pixel island of 3840×2160, and h2 = 181.8 micrometers (μm).

[0103] In some embodiments, when the width of the M optical splitting structures in the row direction is equal to the width of the K - column pixel island, the width P1 of the cylindrical lens in the row direction is P1 = K×h2 / M. When K = 4, M = 5, P1 = 145.44μm.

[0104] Note that since the total number of pixel islands included in the display device is the resolution of the 2D display, the size of the pixel islands of the display device provided by the embodiments of the present invention is for achieving a 2D display with a resolution at the retinal level. That is, since the angle of the pixel islands with respect to the human eye is 1", L1 = 630 mm is the optimal viewing distance. To ensure no crosstalk between the left and right eyes of the 3D display at the optimal viewing distance, it is necessary to design such that the number of the viewing point intervals between the left and right eyes at the optimal viewing distance is maximized. The sum of the viewing point widths and the interpupillary distance D when the viewing points are not repeated at the optimal viewing distance satisfy the following conditions.

[0105]

Equation

[0106] Here, m is an integer of 0 or more. From this condition, it can be seen that as m increases, the density of the viewing points gradually increases, but the movable range of the human eye gradually decreases. Since the embodiments of the present invention prefer a larger movement range of the human eye, m = 0, and the human interpupillary distance D is usually 65 mm, that is, W = 2 * D = 130 mm. The material of the spacer dielectric layer is usually glass, and n3 = 1.5. Substituting L1 = 630 mm, W = 130 mm, n3 = 1.5, and P1 = 145.44 μm into

[0107]

Equation

[0108] gives H = 1057 μm.

[0109] In a specific embodiment, when n 1 = 1.55, n 2 = 1.42, n3 = 1.5, and H = 1057 μm,

[0110]

Equation

[0111] It is.

[0112] Next, the results of simulating the curvature radius of the cylindrical lens in the range of 0.87r or more and 1.33r or less will be introduced. The parameters calculated above: P 1 Based on = 145.44 μm, H = 1057 μm, r = 91.6 μm, and h2 = 11.3625 μm, a model was created, the curvature radius was scanned, and as shown in FIGS. 8 to 10, sub-pixel emission angle spectra with curvature radii of 97 μm, 110 μm, and 122 μm were obtained respectively. It can be seen that when the curvature radius is different, the angular spectrum of the sub-pixel is different, and the crosstalk between the obtained viewpoints is also different. Based on the angular spectra of the obtained viewpoints, the crosstalk between the viewpoints is calculated, and the change relationship between the crosstalk between adjacent viewpoints shown in FIG. 11 and the curvature radius is obtained. The crosstalk between adjacent viewpoints is relatively small, there is no obvious change due to the variation of the curvature radius, and in order to obtain a wide viewing range with zero crosstalk in the left and right eyes, a curvature radius R = 97 μm is recommended in the front, and a curvature radius R = 122 μm is preferable at a large viewing angle. Furthermore, according to the comparison of the crosstalk data with and without diffraction, since the embodiment of the present invention employs four pixel islands corresponding to five cylindrical lenses, it can be seen that the width of the cylindrical lens increases and the influence of diffraction becomes smaller. As a result, the feasibility of the manufacturing process of the cylindrical lens is enhanced, and at the same time, the problem of crosstalk due to diffraction caused by the reduction of the size of the cylindrical lens is effectively avoided.

[0113] In a specific embodiment, when the cylindrical lens is a zoomable liquid crystal lens, the cylindrical lens can have different curvature radii at different viewing angles, and relatively small adjacent viewpoint crosstalk can be obtained without significant changes accompanying the variation of the curvature radius. Also, there is a possibility that the viewing range where the crosstalk between the left eye and the right eye becomes zero becomes wider.

[0114] Based on the above simulation model, P 1= 145.44 μm, H = 1057 μm, R = 97 μm, h2 = 11.3625 μm, sub-pixel opening 9.09 μm, scan the sub-pixel opening, obtain the sub-pixel emission angle spectra at different opening positions, and the positions of different sub-pixels are as shown in Fig. 12. According to the calculation of the angle spectra, the variation of the moiré contrast due to the variation of the sub-pixel opening deviation is obtained as shown in Fig. 13. It can be seen that by increasing the sub-pixel aperture ratio in the embodiments of the present invention, the sensitivity to the influence of pixel opening variation on the moiré pattern can be effectively reduced.

[0115] In a specific embodiment, for a display device with M = 4, N = 127, and a 31.5-inch display, the RGB resolution is 3840×16×2160. To meet the viewing needs of many people and considering the manufacturing process of the cylindrical lens, it is designed such that the projection width of 127 sub-pixels at 1 m is 807 mm, i.e., W = 807 mm. When n1 - n2 = 0.3, the width P1 of the cylindrical lens in the row direction is obtained as 360.759375 μm. However, the number of decimal places of P1 is too many. For example, in order to reduce the manufacturing difficulty of the cylindrical lens and ensure the manufacturing accuracy, the widths of multiple cylindrical lenses in the row direction can be set so that they are not exactly the same. For example, a group of 16 cylindrical lenses is used to design the width of the cylindrical lens in the row direction. The group of cylindrical lenses includes 15 cylindrical lenses with P1 = 360.76 μm and 1 cylindrical lens with P1 = 360.75 μm. The cylindrical lens may be a cylindrical lens composed of two resin layers or a liquid crystal lens. L1 = 1000 mm, n3 = 1.5, H = 700 mm, r = 147 μm, the aperture of the cylindrical lens is 145 μm, and the arch height of the cylindrical lens is 19.12 μm. Based on the above parameters, modeling and simulation are performed to obtain the emission angle spectra as shown in FIGS. 14 to 15. Here, FIG. 14 is the emission angle spectrum of 127 sub-pixels. FIG. 15 is an enlarged view of the solid line frame part of FIG. 14. According to FIGS. 14 and 15, it can be concluded that due to the correspondence relationship between M and N in this solution, a uniform spatial overlapping effect between the emission regions of each sub-pixel is achieved, and the occurrence of the "black zone" can be avoided.

[0116] In a specific embodiment, when M = 5, N = 32, and for a 31.5-inch display device, the RGB resolution is 3840×16×2160. To meet the viewing needs of many people and considering the manufacturing process of the cylindrical lens, the projection width of 32 sub-pixels at 1.5 m is designed to be 130 mm, i.e., W = 130 mm. When n1 - n2 = 0.3, the width P1 of the cylindrical lens in the row direction is obtained as 72.72 μm. The cylindrical lens may be a cylindrical lens composed of two resin layers or a liquid crystal lens. L1 = 1500 mm, n3 = 1.5, H = 1259 mm, r = 259 μm, the aperture of the cylindrical lens is 72.72 μm, and the arch height is 2.56 μm. Based on the above parameters, modeling and simulation are performed to obtain the emission angle spectrum as shown in FIGS. 16 to 17. Here, FIG. 16 is the emission angle spectrum of 32 sub-pixels. FIG. 17 is an enlarged view of the solid line frame portion of FIG. 16. According to FIGS. 16 and 17, due to the correspondence relationship between M and N in this solution, it can be concluded that the effect of uniform spatial overlap between the emission regions of each sub-pixel is achieved, and the occurrence of the "black zone" can be avoided.

[0117] In a specific embodiment, when M = 5, N = 32, N = K * n, K = 2, and n = 16, for a 31.5-inch display device, the RGB resolution remains 3840×16×2160. The width h2 of the pixel island is 181.8 micrometers (μm). To meet the viewing needs of many people and considering the manufacturing process of the cylindrical lens, the projection width of 32 sub-pixels at 1.5 m is designed to be 130 mm, that is, W = 130 mm. n1 - n2 = 0.3, and the width P1 of the cylindrical lens in the row direction is obtained as 72.72 μm. The cylindrical lens may be a cylindrical lens composed of two resin layers or a liquid crystal lens. L1 = 1500 mm, n3 = 1.5, H = 1259 mm, r = 259 μm, the aperture of the cylindrical lens is 72.72 μm, and the arch height is 2.56 μm. Based on the above parameters, modeling and simulation are performed to obtain the emission angle spectrum as shown in FIGS. 16 to 17. Here, FIG. 16 is the emission angle spectrum of 32 sub-pixels. FIG. 17 is an enlarged view of the solid-line frame part of FIG. 16. According to FIGS. 16 and 17, due to the correspondence relationship between M and N in this solution, the effect of uniform spatial overlap between the emission regions of each sub-pixel is achieved, and it can be concluded that the occurrence of the "black zone" can be avoided.

[0118] In a specific embodiment, when M = 4, N = 185, for a 31.5-inch display device, the RGB resolution is 3840×16×2160. To meet the viewing needs of many people and considering the manufacturing process of the cylindrical lens, the projection width of 185 sub-pixels at 1 m is designed to be 1143.1 mm, that is, W = 1143.1 mm. n1 - n2 = 0.3, and the width P1 of the cylindrical lens in the row direction is obtained as 525.515625 μm. The cylindrical lens may be a cylindrical lens composed of two resin layers or a liquid crystal lens. L1 = 1000 mm, n3 = 1.5, H = 750 mm, r = 157 μm, the aperture of the cylindrical lens is 150 μm, and the arch height is 19.07 μm.

[0119] In a specific embodiment, when M = 4, N = 205, and for a 31.5-inch display device, the RGB resolution is 3840×16×2160. To meet the viewing needs of many people and considering the manufacturing process of the cylindrical lens, it is designed such that the projection width of 205 sub-pixels at 1 m is 1032.3 mm, that is, W = 1032.3 mm. n1 - n2 = 0.55, and the width P1 of the cylindrical lens in the row direction is obtained as 585.38215 μm. L1 = 1000 mm, n3 = 1.5, H = 830 mm, r = 311 μm, the aperture of the cylindrical lens is 474 μm, and the arch height is 109.62 μm.

[0120] In a specific embodiment, when M = 5, N = 64, and for a 31.5-inch display device, the RGB resolution is 1920×16×1080. To meet the viewing needs of many people and considering the manufacturing process of the cylindrical lens, it is designed such that the projection width of 64 sub-pixels at 0.5 m is 130 mm, that is, W = 130 mm. n1 - n2 = 0.3, and the width P1 of the cylindrical lens in the row direction is obtained as 122.4 μm. The cylindrical lens may be a cylindrical lens composed of two resin layers or a liquid crystal lens. L1 = 500 mm, n3 = 1.5, H = 707 mm, r = 45 μm, the aperture of the cylindrical lens is 72.72 μm, and the arch height is 13.55 μm.

[0121] In some embodiments, in the row direction, the absolute value of the difference in the widths of different sub-pixel aperture regions is 2.5 μm or less. Thereby, it is possible to avoid moiré patterns caused by large deviations of sub-pixel apertures at different positions and improve the display effect.

[0122] In a specific embodiment, in order to further avoid the influence of fluctuations in sub-pixel apertures on moiré patterns, it can also be set such that the absolute value of the difference in the widths of different b-pixels in the row direction is 0.6 microns or less.

[0123] In some embodiments, the display device includes an eye tracking system used to determine the position of the user's eyes in real time.

[0124] The above display device provided by the embodiments of the present invention is a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, or other products or components having a display function. Other essential components of the display device are understood by those of ordinary skill in the art and will not be described in detail here nor should they be used to limit the present invention.

[0125] In summary, for the display device provided by the embodiments of the present invention, the M optical splitting structures cover the corresponding N columns of sub-pixels, and both M and N are integers greater than 1. That is, the optical splitting structure and the sub-pixels have a many-to-many correspondence relationship. Thereby, it is possible to avoid the size of the optical splitting structure in the row direction being too small, increase the difficulty of preparing the optical splitting components, and also avoid the increase in the light divergence angle of the sub-pixels due to diffraction of the optical splitting structure with too small a size, the increase in crosstalk between views, and the impact on the display effect.

[0126] Although the preferred embodiments of the present invention have been described, those of ordinary skill in the art can make further changes and modifications to these embodiments if the basic inventive concept is clear. Therefore, the appended claims are intended to be construed as including the preferred embodiments within the scope of the present invention and all changes and modifications.

[0127] It is obvious that those of ordinary skill in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations in the embodiments of the present invention belong to the scope of the claims of the present invention and the scope of its equivalent technologies, the present invention shall also include those variations and modifications.

Claims

1. A display device, comprising: a display panel; and a light splitting element disposed on the display side of the display panel, wherein the display panel includes a plurality of pixel islands arranged in an array along a row direction and a column direction, each of the pixel islands includes a plurality of sub-pixels arranged at intervals along the row direction, the light splitting element includes a plurality of light splitting repeating units extending along the column direction and continuously arranged along the row direction, the light splitting repeating unit includes M light splitting structures extending along the column direction and continuously arranged along the row direction, each of the light splitting repeating units covers N columns of the sub-pixels, and M and N are both integers greater than 1 and M and N are relatively prime to each other. The display device.

2. Each of the light splitting repeating units corresponds to K columns of the pixel islands, and K is an integer greater than 1. The display device according to claim 1.

3. The display device according to claim 2, wherein N and K are relatively prime to each other.

4. The display device according to claim 2, wherein N / K is an integer.

5. Each of the pixel islands includes n sub-pixels arranged at intervals along the row direction, where n is an integer greater than 1, each of the light splitting repeating units covers K columns of the pixel islands, N = K*n, K is an integer greater than 1, and M and K are relatively prime to each other. The display device according to claim 4.

6. The display device according to any one of claims 1 to 5, wherein after the light emitted from the light emitting regions of the N columns of the sub-pixels is split by the M light splitting structures, a spatially continuous light emitting region is formed.

7. In the horizontal direction, the widths of the M light splitting structures are equal to the widths of the N columns of the sub-pixels. The display device according to claim 6.

8. The sub-pixel includes a sub-pixel opening region, and in the row direction, the ratio of the total width of the n sub-pixel opening regions to the width of the pixel island is 0.9 / M or more and 1 or less. The display device according to claim 7.

9. In the row direction, the light emitting regions of the N columns of the sub-pixels are spatially complementarily joined. The display device according to claim 8.

10. In the row direction, the ratio of the width of the sub-pixel opening region to the width of the pixel island is 1 / M. The display device according to claim 9.

11. The display device according to claim 8, wherein, in the row direction, the light-emitting regions of the N columns of sub-pixels spatially overlap each other.

12. The display device according to claim 11, wherein, in the row direction, the light-emitting regions of the N columns of sub-pixels spatially overlap uniformly.

13. The display device according to claim 12, wherein, in the row direction, the ratio of the width of the sub-pixel aperture region to the width of the pixel island is i / M, where i is an integer greater than 1 and less than or equal to M-1.

14. The display device according to any one of claims 8 to 13, wherein, in the row direction, the absolute value of the difference in the widths of different sub-pixel aperture regions is 2.5 μm or less.

15. The display device according to any one of claims 1 to 14, further comprising a spacer dielectric layer disposed between the light splitting element and the display panel.

16. The display device according to claim 15, wherein the light splitting structure is a cylindrical lens.

17. The cylindrical lens according to claim 16 includes a first resin layer having protrusions and a planarization resin layer disposed on the side of the first resin layer away from the display panel, and the refractive index of the planarization resin layer is smaller than the refractive index of the first resin layer. The display device according to claim 16.

18. The display device according to claim 16, wherein the cylindrical lens is a liquid crystal lens.

19. The radius of curvature of the cylindrical lens is 0.87r or more and 1.33r or less, where 【Number 1】 where n1 is the refractive index of the first resin layer or the refractive index of the e-ray of the liquid crystal lens, n2 is the refractive index of the planarization resin layer or the refractive index of the o-ray of the liquid crystal lens, n3 is the refractive index of the spacer dielectric layer, L1 is the optimum viewing distance of the display device, P1 is the width of the cylindrical lens in the row direction, and W is the projection width of the main lobe viewing angle formed by the light emitted from the sub-pixel at the optimum viewing distance. The display device according to claim 17 or claim 18.

20. M is 4, N is 127, M is 4, N is 185, or M is 5, N is 16, or M is 5, N is 32, or M is 5, N is 64, or M is 5, N is 128. The display device according to any one of claims 1, 6 to 16.

21. The display device according to any one of claims 5 to 16, wherein M is 5, K is 4, and n is 4; M is 5, K is 4, and n is 16; or M is 3, K is 4, and n is 32; or M is 5, K is 2, and n is 16.

22. Each three of the pixel islands continuously arranged in the column direction is one pixel repetition unit, In one pixel repetition unit, the display colors of the sub-pixels of the same pixel island are the same, and the display colors of the sub-pixels of different pixel islands are different. The display device according to any one of claims 1 to 21.

23. The display device according to any one of claims 1 to 22, further comprising a gaze tracking system used to determine the position of the user's eyes in real time.

Images