Display device

Abstract

The present disclosure relates to the field of optical technology, and specifically to a display device, comprising: a display panel; a cylindrical lens array, the cylindrical lens array comprising a plurality of lens elements; in at least one lens element, the light incident surface comprises a first sub-section and two second sub-sections, along a first direction, the two second sub-sections are respectively located on both sides of the first sub-section, the second sub-section comprises at least one wedge-shaped structure, the wedge-shaped structure is concave in a direction away from the display panel, one wedge-shaped structure corresponds to at least one column of sub-pixels arranged along a second direction, and a dimming film is arranged on the inner wall of the wedge-shaped structure on the side away from the central axis surface of the lens element; the light emitting surface is a convex curved surface. The present disclosure effectively alleviates the problem of image display missing, and at the same time improves the image display effect.

Description

Technical Field

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

[0002] 3D display is a stereoscopic image display method that can project images into three-dimensional space, giving users an immersive experience.

[0003] The use of cylindrical lens arrays in traditional three-dimensional displays can make different elementary images on the display screen bend in different directions, so that users can obtain a three-dimensional display effect without wearing additional equipment, thereby achieving the purpose of naked-eye three-dimensional display. However, in a simple cylindrical lens array structure, after the light emitted by some pixels passes through the plane of the plano-convex lens, the incident angle on the curved surface of the plano-convex lens is greater than the critical angle of total reflection, and the light cannot be emitted normally, resulting in these pixels being unable to emit normally to form viewpoints, causing the loss of image display.

[0004] Meanwhile, existing display devices have the problem of poor image display effects. Summary of the invention

[0005] In order to solve the above technical problems, the present disclosure provides a display device, which effectively alleviates the problem of image display missing and improves the display effect of the image.

[0006] In a first aspect, an embodiment of the present disclosure provides a display device, comprising: a display panel, the display panel comprising a plurality of sub-pixels arranged in an array along a first direction and a second direction, the first direction and the second direction intersecting; a cylindrical lens array, the cylindrical lens array comprising a plurality of lens elements arranged along the first direction, the lens elements extending along the second direction, the lens elements corresponding to a plurality of columns of sub-pixels arranged along the second direction, the lens elements comprising a light incident surface and a light emitting surface, the light incident surface of the lens elements facing the light emitting side of the display panel; in at least one lens element, the light incident surface comprises a first sub-portion and two second sub-portions, along the first direction, the two second sub-portions are respectively located on both sides of the first sub-portion, the second sub-portion comprises at least one wedge-shaped structure, the wedge-shaped structure is recessed in a direction away from the display panel, one wedge-shaped structure corresponds to at least one column of sub-pixels arranged along the second direction, a dimming film is provided on an inner wall of the wedge-shaped structure on a side away from the central axis surface of the lens element; the light emitting surface is a convex curved surface.

[0007] In some embodiments, the wedge-shaped structure includes a first inner wall and a second inner wall connected to each other, the first inner wall is located on the side of the wedge-shaped structure away from the central axis plane of the lens element, the plane where the first inner wall is located is perpendicular to the plane where the display panel is located, and the angle between the first inner wall and the second inner wall is less than 90°; the dimming film is arranged on the first inner wall.

[0008] In some embodiments, the dimming film is a reflective film.

[0009] In some embodiments, the dimming film is an absorption film.

[0010] In some embodiments, along a direction perpendicular to the plane where the display panel is located, the height of the first inner wall is H1, and the diameter of the wedge-shaped structure along the first direction is H2; wherein H2

[0011] In some embodiments, the first sub-portion is a planar structure, and the first sub-portion corresponds to at least one column of sub-pixels arranged along the second direction.

[0012] In some embodiments, in the same lens element, along the first direction, the distance between the second sub-portion and the central axis plane of the lens element is L; wherein, R1 is the radius of curvature of the light-emitting surface, and n is the refractive index of the lens element.

[0013] In some embodiments, the display panel includes a plurality of sub-pixel groups, each sub-pixel group includes at least one column of sub-pixels arranged along the second direction; one wedge-shaped structure corresponds to one sub-pixel group; the diameter of the wedge-shaped structure along the first direction is H2; wherein, P1 is the width of the sub-pixel group along the first direction.

[0014] In some embodiments, the wedge-shaped structure is centrally disposed on one side of the corresponding sub-pixel group.

[0015] In some embodiments, the second sub-section includes at least two wedge-shaped structures, and along the first direction, the distance between two adjacent wedge-shaped structures is d1; wherein d1>0.

[0016] A display device provided by an embodiment of the present disclosure comprises: in at least one lens element, two second sub-portions are respectively located on both sides of the first sub-portion along a first direction, that is, along the first direction, the two second sub-portions are respectively located at the edges of both sides of the first sub-portion; the second sub-portion comprises at least one wedge-shaped structure, the wedge-shaped structure is recessed in a direction away from the display panel, a wedge-shaped structure corresponds to at least one column of sub-pixels arranged along the second direction, light emitted by the sub-pixels will be emitted toward the wedge-shaped structure corresponding thereto, when the light is emitted toward the surface of the wedge-shaped structure on the side close to the central axis surface of the lens element, the light will be refracted and enter the lens element, so that when the light is emitted toward the light-emitting surface of the lens element, its incident angle is less than the critical angle of total reflection, the light can be emitted normally from the light-emitting surface of the lens element to form a viewpoint image, effectively alleviating the problem of image display missing. At the same time, a dimming film is provided on the inner wall of the wedge-shaped structure on the side away from the central axis surface of the lens element. When the light emitted by the sub-pixel is directed toward the dimming film, the dimming film can adjust the light to prevent the light from being directed toward the lens element adjacent to it, and prevent this part of the light from being emitted from the light-emitting surface of the lens element adjacent to it, thereby effectively improving the image display effect of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] ​The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 A schematic diagram of the structure of a display device provided by the prior art;

[0020] Figure 2 for Figure 1 A schematic diagram of light propagation of a lens element in the display device;

[0021] Figure 3 for Figure 1 A schematic diagram of light propagation of two adjacent lens elements in the display device;

[0022] Figure 4 A schematic plan view of a display device provided in an embodiment of the present disclosure;

[0023] Figure 5 for Figure 4 A schematic diagram of a partial structure of the display device;

[0024] Figure 6 for Figure 5 An optical path diagram of a lens element in the display device;

[0025] Figure 7 for Figure 4 Another partial structural schematic diagram of the display device;

[0026] Figure 8 for Figure 4 A schematic diagram of another partial structure of the display device. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0029] Figure 1 The structure diagram of the display device provided by the prior art is shown in FIG. Figure 1 As shown, the cylindrical lens array in the display device includes a plurality of lens elements, and one lens element 1 corresponds to a plurality of columns of sub-pixels 2 . Figure 2 for Figure 1 A schematic diagram of light propagation of a lens element in the display device is shown in FIG. Figure 1 and Figure 2 As shown, for the sub-pixel corresponding to the edge position of the lens element, the light emitted by the sub-pixel passes through the light entrance surface of the plano-convex lens and is incident on the curved surface of the plano-convex lens. The incident angle is greater than the critical angle of total reflection. The light is totally reflected on the curved surface of the plano-convex lens and cannot be emitted normally to form a viewpoint image, resulting in the problem of missing image display.

[0030] Figure 3 for Figure 1 A schematic diagram of light propagation of two adjacent lens elements in the display device is shown in FIG. Figure 3 As shown, for the sub-pixel 2 corresponding to the edge position of the lens element 1a, the light beam emitted by the sub-pixel 2 is emitted from the lens element 1a in the lens column lens array to the lens element 1b adjacent to it, and is emitted from the lens element 1b adjacent to it, thereby affecting the imaging effect of the lens element 1b, thereby affecting the image display effect of the display device, causing the display device to have a poor image display effect.

[0031] To address this problem, an embodiment of the present disclosure provides a display device, which will be described below in conjunction with a specific embodiment.

[0032] Figure 4 A schematic plan view of a display device provided in an embodiment of the present disclosure is shown in FIG. Figure 5 for Figure 4 A partial structural diagram of the display device, referring to Figure 4 and Figure 5 , an embodiment of the present disclosure provides a display device, including:

[0033] A display panel 10, the display panel 10 includes a plurality of sub-pixels 11 arranged in an array along a first direction X and a second direction Y, the first direction X and the second direction Y intersecting;

[0034] A cylindrical lens array 20, wherein the cylindrical lens array 20 includes a plurality of lens elements 21 arranged along a first direction X, wherein the lens elements 21 extend along a second direction Y, and the lens elements 21 correspond to a plurality of columns of sub-pixels 11 arranged along the second direction Y, wherein the lens elements 21 include a light incident surface 22 and a light emitting surface 23, wherein the light incident surface 22 of the lens element 21 faces the light emitting side of the display panel 10;

[0035] In at least one lens element 21, the light incident surface 22 includes a first sub-portion 221 and two second sub-portions 222. Along the first direction X, the two second sub-portions 222 are respectively located on both sides of the first sub-portion 221. The second sub-portion 222 includes at least one wedge-shaped structure 30. The wedge-shaped structure 30 is recessed in a direction away from the display panel 10. One wedge-shaped structure 30 corresponds to at least one column of sub-pixels 11 arranged along the second direction Y. A dimming film 40 is provided on the inner wall of the wedge-shaped structure 30 on the side away from the central axis surface of the lens element 21.

[0036] The light emitting surface 23 is a convex curved surface.

[0037] Specifically, Figure 6 for Figure 5 A light path diagram of the lens element in the display device, referring to Figure 3-Figure 6 , the display device includes a display panel 10 and a cylindrical lens array 20. The display panel 10 includes a plurality of sub-pixels 11 arranged in an array along a first direction X and a second direction Y, and the first direction X and the second direction Y intersect. Optionally, the first direction X and the second direction Y are perpendicular to each other. The cylindrical lens array 20 includes a plurality of lens elements 21 arranged along the first direction X, the lens elements 21 extend along the second direction Y, the lens elements 21 correspond to a plurality of columns of sub-pixels 11 arranged along the second direction Y, the lens elements 21 include a light incident surface 22 and a light emitting surface 23, the light incident surface 22 of the lens element 21 faces the light emitting side of the display panel 10, and the light emitting surface 23 of the lens element 21 is a convex curved surface. The light emitted by the sub-pixel 11 will be emitted to the light incident surface 22 of the lens element 21 corresponding to it and enter the lens element 21, and will be refracted after passing through the lens element 21, and will be emitted from the light emitting surface 23 of the lens element 21, thereby realizing a three-dimensional display. The light emitting surface 23 of the lens element 21 is convex in the direction away from the display panel 10. The elementary image is a pixel in the display panel 10 corresponding to the lens element 21, and the image thereon is composed of different viewpoint information encoded, and the light emitted by it is refracted by the corresponding lens element 21, so that the image can be decoded.

[0038] In at least one lens element 21, the light incident surface 22 includes a first sub-portion 221 and two second sub-portions 222. Along the first direction X, the two second sub-portions 222 are respectively located on both sides of the first sub-portion 221, that is, along the first direction X, the two second sub-portions 222 are respectively located at the edges of both sides of the first sub-portion 221. The second sub-portion 222 includes at least one wedge-shaped structure 30. The wedge-shaped structure 30 is recessed in the direction away from the display panel 10. One wedge-shaped structure 30 corresponds to at least one column of sub-pixels 11 arranged along the second direction Y. The light emitted by the sub-pixel 11 will be emitted toward the wedge-shaped structure 30 corresponding thereto. When the light is emitted toward the surface of the wedge-shaped structure 30 on the side close to the central axis surface of the lens element 21, the light will be refracted and enter the lens element 21, so that when the light is emitted toward the light-emitting surface 23 of the lens element 21, its incident angle is less than the critical angle of total reflection, and the light can be normally emitted from the light-emitting surface 23 of the lens element 21 to form a viewpoint image, effectively alleviating the problem of image display loss.

[0039] At the same time, a dimming film 40 is provided on the inner wall of the wedge-shaped structure 30 on the side of the central axis surface away from the lens element 21. When the light emitted by the sub-pixel 11 is directed toward the dimming film 40, the dimming film 40 can adjust the light to prevent the light from being directed toward the lens element 21 adjacent to it, and prevent this part of the light from being emitted from the light-emitting surface 23 of the lens element 21 adjacent to it, thereby effectively improving the image display effect of the display device.

[0040] Exemplarily, when the light emitted by the sub-pixel 11 corresponding to the wedge-shaped structure 30 in the lens element 21a is directed toward the dimming film 40, the dimming film 40 can adjust this part of the light to prevent this part of the light from entering the lens element 21b adjacent thereto, thereby preventing this part of the light from being emitted from the light-emitting surface 23 of the lens element 21b adjacent thereto, thereby effectively improving the image display effect of the display device.

[0041] Continue to refer Figure 4-Figure 6 In some optional embodiments, the wedge-shaped structure 30 includes a first inner wall 31 and a second inner wall 32 connected to each other, the first inner wall 31 is located on a side of the wedge-shaped structure 30 away from the central axis of the lens element 21, the plane where the first inner wall 31 is located is perpendicular to the plane where the display panel 10 is located, and the angle between the first inner wall 31 and the second inner wall 32 is less than 90°;

[0042] The dimming film 40 is disposed on the first inner wall 31 .

[0043] Specifically, the recessed portion formed by the wedge-shaped structure 30 is in the shape of a triangular prism, and the wedge-shaped structure 30 includes a first inner wall 31 and a second inner wall 32 connected to each other. The first inner wall 31 is located on the side of the wedge-shaped structure 30 away from the central axis surface of the lens element 21. The plane where the first inner wall 31 is located is perpendicular to the plane where the display panel 10 is located, which is beneficial to increase the range of adjustable light, effectively prevent light from being emitted from the light-emitting surface 23 of the lens element 21 adjacent to it, and effectively improve the image display effect of the display device.

[0044] The angle between the first inner wall 31 and the second inner wall 32 is less than 90°, that is, the second inner wall 32 is set as a slope. When the light emitted by the sub-pixel 11 is emitted to the surface on the side of the central axis plane of the wedge-shaped structure 30 close to the lens element 21, the light will be refracted into the lens element 21, so that when the light is emitted to the light-emitting surface 23 of the lens element 21, its incident angle is less than the critical angle of total reflection, and the light can be normally emitted from the light-emitting surface 23 of the lens element 21 to form a viewpoint image, which effectively alleviates the problem of image display missing.

[0045] Continue to refer Figure 4-Figure 6 In some optional embodiments, the dimming film 40 is a reflective film 41 .

[0046] Specifically, the dimming film 40 can be a reflective film 41. When the light emitted by the sub-pixel 11 is directed toward the dimming film 40, the dimming film 40 can reflect the light to prevent the light from being directed toward the lens element 21 adjacent to it, and prevent this part of the light from being emitted from the light-emitting surface 23 of the lens element 21 adjacent to it, thereby effectively improving the image display effect of the display device.

[0047] At the same time, the light reflected by the dimming film 40 can be emitted from the light emitting surface 23 of the lens element 21, thereby enhancing the brightness of the edge viewpoints, avoiding the "jump" image at the edge of the field of view, and further improving the image display effect of the display device.

[0048] Figure 7 for Figure 4 Another partial structural diagram of the display device, see Figure 4 and Figure 7 In some optional embodiments, the dimming film 40 is an absorption film 42 .

[0049] Specifically, the dimming film 40 can be an absorption film 42. When the light emitted by the sub-pixel 11 is directed toward the dimming film 40, the dimming film 40 can absorb the light, so that the light cannot be directed toward the lens element 21 adjacent to it, effectively preventing the light from being emitted from the light-emitting surface 23 of the lens element 21 adjacent to it, and effectively improving the image display effect of the display device.

[0050] It should be noted that in other embodiments of the present disclosure, the dimming film 40 may also be other film layers for adjusting light, which will not be described in detail in the present disclosure.

[0051] Continue to refer Figure 4 and Figure 5 In some optional embodiments, along a direction perpendicular to the plane where the display panel 10 is located, the height of the first inner wall 31 is H1, and the diameter of the wedge-shaped structure 30 along the first direction X is H2;

[0052] Among them, H2

[0053] Specifically, along the direction perpendicular to the plane where the display panel 10 is located, the height of the first inner wall 31 is H1, and the diameter of the wedge-shaped structure 30 along the first direction X is H2, H1>H2, so that the large-angle light emitted by the sub-pixel 11 corresponding to the wedge-shaped structure 30 can all be directed to the dimming film 40, that is, the dimming film 40 can adjust the large-angle light emitted by the sub-pixel 11 to prevent the light from being directed to the adjacent lens element 21, and prevent the part of the light from being emitted from the light-emitting surface 23 of the adjacent lens element 21, effectively improving the image display effect of the display device. At the same time, H1<2H2 can prevent the depth of the wedge-shaped structure 30 from being too large, which increases the difficulty of setting the wedge-shaped structure 30.

[0054] Continue to refer Figure 4 and Figure 5 In some optional embodiments, the first sub-portion 221 is a planar structure, and the first sub-portion 221 corresponds to at least one column of sub-pixels 11 arranged along the second direction Y.

[0055] Specifically, along the first direction X, the two second sub-portions 222 in the lens element 21 are respectively located on both sides of the first sub-portion 221, that is, the first sub-portion 221 is located in the middle area of ​​the lens element 21, and the light emitted by the sub-pixel 11 corresponding to the area does not need to be adjusted by the wedge-shaped structure 30, so that the first sub-portion 221 is a planar structure.

[0056] Continue to refer Figure 4 and Figure 5 In some optional embodiments, in the same lens element 21, along the first direction X, the distance between the second sub-portion 222 and the central axis plane of the lens element 21 is L;

[0057] in, R1 is the curvature radius of the light emitting surface 23 , and n is the refractive index of the lens element 21 .

[0058] ​Specifically, taking the case where the light emitted by the sub-pixel 11 is perpendicular to the plane where the first sub-portion 221 is located as an example, when the light emitted by the sub-pixel 11 is perpendicularly incident on the light incident surface 22 of the lens element 21, and is incident on the light emitting surface 23 of the lens element 21 along the original direction, wherein the distance between the sub-pixel 11 and the central axis of the lens element 21 is L', the radius of curvature of the light emitting surface 23 is R1, and the incident angle to the light emitting surface 23 is The critical angle for total reflection is Where n is the refractive index of the lens element 21, if The sub-pixel 11 needs to be provided with a wedge-shaped structure 30, that is, the distance between the sub-pixel 11 and the central axis of the lens element 21 corresponding to the sub-pixel 11 along the first direction X is greater than The sub-pixel 11 corresponding to the edge of the lens element 21 needs to be provided with a wedge-shaped structure 30, so as to effectively alleviate the problem of missing viewpoints formed by the sub-pixel 11 corresponding to the edge of the lens element 21 when displaying an image. That is, along the first direction X, the distance between the second sub-portion 222 and the central axis of the lens element 21 needs to be less than As a result, the light emitted from the sub-pixel 11 corresponding to the edge of the lens element 21 can be normally emitted from the light-emitting surface 23 of the lens element 21 to form a viewpoint image, effectively alleviating the problem of image display missing.

[0059] Continue to refer Figure 4 and Figure 5 In some optional embodiments, the display panel includes a plurality of sub-pixel groups 12, and the sub-pixel group 12 includes at least one column of sub-pixels 11 arranged along the second direction Y;

[0060] One wedge-shaped structure 30 corresponds to one sub-pixel group 12;

[0061] The diameter of the wedge-shaped structure 30 along the first direction X is H2;

[0062] in, P1 is the width of the sub-pixel group 12 along the first direction X.

[0063] Specifically, one wedge-shaped structure 30 corresponds to one sub-pixel group 12, and the diameter of the wedge-shaped structure 30 along the first direction X is H2. The diameter of the wedge-shaped structure 30 along the first direction X is less than or equal to the width of the sub-pixel group 12 along the first direction X, so that the wedge-shaped structure 30 can modulate the light emitted by the sub-pixel 11 in the sub-pixel group 12 corresponding to it. At the same time, when the diameter of the wedge-shaped structure 30 along the first direction X is less than or equal to When the second sub-section 222 has a partial planar structure corresponding to the sub-pixel 11, the planar part of the second sub-section 222 cannot be set too large, which will cause the modulation effect of the light emitted by some sub-pixels 11 in the sub-pixel group 12 to deteriorate, resulting in a large difference in the effect of the viewpoints formed by different sub-pixels 11 in the sub-pixel group 12, affecting the display effect. This is beneficial to improving the modulation effect of the light emitted by the corresponding sub-pixel 11 and is beneficial to improving the display effect of the display device.

[0064] Figure 8 for Figure 4 Another partial structural diagram of the display device, see Figure 4 and Figure 8 Optionally, the sub-pixel group 12 includes at least two columns of sub-pixels 11 arranged along the second direction Y, that is, one wedge-shaped structure 30 corresponds to at least two columns of sub-pixels 11 arranged along the second direction Y, which is beneficial to reduce the number of wedge-shaped structures 30 and at the same time, is beneficial to increase the setting area of ​​the wedge-shaped structure 30, thereby reducing the difficulty of setting the wedge-shaped structure 30 and reducing normal costs.

[0065] It should be noted that Figure 8 It is exemplarily shown that the sub-pixel group 12 includes three columns of sub-pixels 11 arranged along the second direction Y, so that one wedge-shaped structure 30 corresponds to the three columns of sub-pixels 11 arranged along the second direction Y. In other embodiments of the present disclosure, one wedge-shaped structure 30 may also correspond to other numbers of sub-pixels 11 arranged along the second direction Y, which will not be described one by one in the present disclosure.

[0066] Continue to refer Figure 4 and Figure 8 In some optional embodiments, the wedge-shaped structure 30 is centrally disposed on one side of the sub-pixel group 12 corresponding thereto.

[0067] Specifically, along the first direction X, the spacing between the edges of the wedge-shaped structure 30 and the corresponding sub-pixel group 12 on both sides is the same, that is, the wedge-shaped structure 30 is centrally arranged on one side of the corresponding sub-pixel group 12, which is beneficial to improving the uniformity of the light output effect in all directions in the display device.

[0068] Continue to refer Figure 4 and Figure 8 In some optional embodiments, the second sub-portion 222 includes at least two wedge-shaped structures 30, and along the first direction X, the distance between two adjacent wedge-shaped structures 30 is d1;

[0069] Among them, d1>0.

[0070] Specifically, when the second sub-section 222 includes at least two wedge-shaped structures 30, there is a spacing between two adjacent wedge-shaped structures 30, which effectively reduces the difficulty of setting the wedge-shaped structure 30 in the second sub-section 222. At the same time, it avoids direct contact between two adjacent wedge-shaped structures 30 to form a sharp corner, thereby avoiding damage to the display panel caused by the sharp corner.

[0071] It should be noted that Figure 8It is exemplarily shown that the second sub-portion 222 includes two wedge-shaped structures 30, that is, the lens element 21 includes four wedge-shaped structures 30. In other embodiments of the present disclosure, the second sub-portion 222 may also include three or more wedge-shaped structures 30, which will not be described one by one in the present disclosure.

[0072] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other to form a technical solution.

[0073] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0074] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

[0075] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display device, characterized in that: include: A display panel, the display panel comprising a plurality of sub-pixels arranged in an array along a first direction and a second direction, wherein the first direction and the second direction intersect; A cylindrical lens array, wherein the cylindrical lens array comprises a plurality of lens elements arranged along the first direction, the lens elements extend along the second direction, the lens elements correspond to a plurality of columns of the sub-pixels arranged along the second direction, the lens elements comprise a light incident surface and a light emitting surface, and the light incident surface of the lens elements faces the light emitting side of the display panel; In at least one of the lens elements, the light incident surface includes a first sub-portion and two second sub-portions, and along the first direction, the two second sub-portions are respectively located on both sides of the first sub-portion, and the second sub-portion includes at least one wedge-shaped structure, and the wedge-shaped structure is recessed in a direction away from the display panel, and one wedge-shaped structure corresponds to at least one column of the sub-pixels arranged along the second direction, and a dimming film is provided on the inner wall of the wedge-shaped structure on a side away from the central axis surface of the lens element; The light emitting surface is a convex curved surface.

2. The display device according to claim 1, characterized in that The wedge-shaped structure comprises a first inner wall and a second inner wall connected to each other, the first inner wall is located on a side of the wedge-shaped structure away from the central axis of the lens element, the plane where the first inner wall is located is perpendicular to the plane where the display panel is located, and the angle between the first inner wall and the second inner wall is less than 90°; The dimming film is arranged on the first inner wall.

3. The display device according to claim 2, characterized in that: The dimming film is a reflective film.

4. The display device according to claim 2, characterized in that: The dimming film is an absorption film.

5. The display device according to claim 2, characterized in that: Along a direction perpendicular to the plane where the display panel is located, the height of the first inner wall is H1, and the diameter of the wedge-shaped structure along the first direction is H2; Among them, H2 <H1<2H2。 6. The display device according to claim 1, characterized in that: The first sub-portion is a planar structure, and the first sub-portion corresponds to at least one column of sub-pixels arranged along the second direction.

7. The display device according to claim 6, characterized in that: In the same lens element, along the first direction, the distance between the second sub-portion and the central axis plane of the lens element is L; in, R1 is the radius of curvature of the light emitting surface, and n is the refractive index of the lens element.

8. The display device according to claim 1, characterized in that: The display panel includes a plurality of sub-pixel groups, each sub-pixel group includes at least one column of sub-pixels arranged along the second direction; One of the wedge-shaped structures corresponds to one of the sub-pixel groups; The diameter of the wedge-shaped structure along the first direction is H2; in, P1 is the width of the sub-pixel group along the first direction.

9. The display device according to claim 8, characterized in that: The wedge-shaped structure is centrally arranged on one side of the corresponding sub-pixel group.

10. The display device according to claim 1, characterized in that: The second sub-section includes at least two wedge-shaped structures, and along the first direction, the distance between two adjacent wedge-shaped structures is d1; Among them, d1>0.

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