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, wherein the cylindrical lens array comprises a plurality of lens elements arranged along a first direction, wherein the lens elements comprise a light incident surface and a light emitting surface, wherein the light incident surface of the lens elements faces the light emitting side of the display panel; in at least one lens element, the light incident surface comprises a first sub-section and two second sub-sections, wherein the two second sub-sections are respectively located on both sides of the first sub-section along the first direction, wherein the second sub-section comprises at least one concave curved surface, wherein one concave curved surface corresponds to at least one column of sub-pixels arranged along the second direction, wherein the first sub-section is a planar structure, and the first sub-section corresponds to at least one column of sub-pixels arranged along the second direction; and the light emitting surface is a convex curved surface. The present disclosure effectively alleviates the problem of image display missing.

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 fold in different directions. Users can obtain the stereoscopic display effect without wearing additional equipment, thus achieving the purpose of naked-eye stereoscopic display. At the same time, the cylindrical lens array solution has a simple structure and low equipment computing power requirements. It can realize large-area stereoscopic display and meet the needs of multiple people watching at the same time.

[0004] However, existing three-dimensional image displays often have display omission problems. Summary of the invention

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

[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 concave curved surface, one concave curved surface corresponding to at least one column of sub-pixels arranged along the second direction, the first sub-portion is a planar structure, the first sub-portion corresponds to at least one column of sub-pixels arranged along the second direction; the light emitting surface is a convex curved surface.

[0007] 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.

[0008] In some embodiments, the radius of curvature of the concave surface is R2; wherein, Wherein, d1 is the diameter of the concave surface along the first direction.

[0009] In some embodiments, the second sub-portion includes at least two concave curved surfaces, and along the first direction, the distance between two adjacent concave curved surfaces is d2; wherein d2>0.

[0010] In some embodiments, a concave curved surface corresponds to a column of sub-pixels arranged along the second direction, and the diameter of the concave curved surface along the first direction is d1; wherein, P1 is the width of the sub-pixel along the first direction.

[0011] In some embodiments, the concave curved surface is centrally disposed on one side of a corresponding column of sub-pixels arranged along the second direction.

[0012] In some embodiments, a concave curved surface corresponds to at least two columns of sub-pixels arranged along the second direction.

[0013] In some embodiments, the display device includes a plurality of pixel units, each pixel unit includes at least two sub-pixels arranged along a first direction; a concave curved surface corresponds to a column of pixel units arranged along a second direction, and the diameter of the concave curved surface along the first direction is d1; wherein, Wherein, P2 is the width of the pixel unit along the first direction.

[0014] In some embodiments, the concave curved surface is centrally disposed on one side of a corresponding column of pixel units arranged along the second direction.

[0015] In some embodiments, the display device includes multiple pixel units, each pixel unit includes at least two sub-pixels arranged along a first direction; in the pixel units corresponding to the first sub-portion, the sub-pixel in at least one pixel unit is located between two adjacent sub-pixels in the pixel unit adjacent to it along the first direction.

[0016] In a display device provided by an embodiment of the present disclosure, in at least one lens element, two second sub-parts are respectively located at the edges of both sides of the first sub-part along a first direction, and the second sub-part includes at least one concave curved surface, and one concave curved surface corresponds to at least one column of sub-pixels arranged along the second direction, that is, light emitted by the sub-pixel will be emitted toward the concave curved surface corresponding to it and refracted into 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, and 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. 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 a partial 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 A schematic plan view of a display device provided in an embodiment of the present disclosure;

[0022] Figure 4 for Figure 3 A schematic diagram of a partial structure of the display device;

[0023] Figure 5 An optical path diagram of a lens element provided in an embodiment of the present disclosure;

[0024] Figure 6 for Figure 5 An enlarged optical path diagram at the concave surface of the lens element;

[0025] Figure 7 for Figure 3 Another partial structural schematic diagram of the display device;

[0026] Figure 8 for Figure 3 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 following is a schematic diagram of a partial structure of a display device provided by the prior art. 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] 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.

[0031] Figure 3 A schematic plan view of a display device provided in an embodiment of the present disclosure is shown in FIG. Figure 4 for Figure 3 A partial structural diagram of the display device, referring to Figure 3 and Figure 4 , an embodiment of the present disclosure provides a display device, including:

[0032] 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;

[0033] 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;

[0034] 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 concave curved surface 30. One concave curved surface 30 corresponds to at least one column of sub-pixels 11 arranged along the second direction Y. 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.

[0035] The light emitting surface 23 is a convex curved surface.

[0036] Specifically, Figure 5 A light path diagram of a lens element provided in an embodiment of the present disclosure, referring to Figure 3-Figure 5The 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 thereto 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 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.

[0037] 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, and the second sub-portion 222 includes at least one concave curved surface 30, and one concave curved surface 30 corresponds to at least one column of sub-pixels 11 arranged along the second direction Y, that is, the light emitted by the sub-pixel 11 will be emitted toward the concave curved surface 30 corresponding to it and refracted into the lens element 21, so that when the light is emitted toward the light exit 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 exit surface 23 of the lens element 21 to form a viewpoint image, effectively alleviating the problem of image display loss.

[0038] It should be noted that the concave curved surface 30 and the light emitting surface 23 in the lens element 21 have the same orientation. Specifically, the concave curved surface 30 in the lens element 21 is concave in the direction away from the display panel 10 , and the light emitting surface 23 in the lens element 21 is convex in the direction away from the display panel 10 .

[0039] Figure 6 for Figure 5 The enlarged optical path diagram at the concave surface of the lens element is shown in Fig. Figure 3-Figure 6, point 41 is a certain luminous point of the sub-pixel corresponding to the concave surface 30, and the light emitted from the point 41 is refracted by the concave surface 30. Taking four incident light rays I1, I2, I3, and I4 as examples, the incident light ray I1 is refracted by the concave surface 30 to obtain the refracted light ray I1', the incident light ray I2 is refracted by the concave surface 30 to obtain the refracted light ray I2', the incident light ray I3 is refracted by the concave surface 30 to obtain the refracted light ray I3', and the incident light ray I4 is refracted by the concave surface 30 to obtain the refracted light ray I4'. The refracted light rays I1', I2', I3', and I4' are extended in the reverse direction, and their reverse extension lines converge at point 42 on the optical axis I of the concave surface 30 to form a virtual image, and point 42 is also the virtual image point of the sub-pixel.

[0040] It can be seen that, through the lens element 21 provided in the embodiment of the present disclosure, the distance between the sub-pixel corresponding thereto and the virtual image formed by the sub-pixel through the concave surface 30 is relatively close, and the virtual image is located on the optical axis of the concave surface 30, so it will not affect the spectroscopic display effect of the lens element 21 or the cylindrical lens array 20 itself, and can maintain the human eye to see different viewpoint images at different angles, and will adjust the focal length respectively, so that the clarity of the image can still be maintained, providing a good visual experience.

[0041] Continue to refer Figure 3 and Figure 4 In some optional embodiments, in the same lens element 21,

[0042] 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;

[0043] in, R1 is the curvature radius of the light emitting surface 23 , and n is the refractive index of the lens element 21 .

[0044] 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 concave curved surface 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 concave curved surface 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 the image is displayed. 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.

[0045] Continue to refer Figure 3 and Figure 4 In some optional embodiments, the curvature radius of the concave surface 30 is R2;

[0046] in, Wherein, d1 is the diameter of the concave surface 30 along the first direction X.

[0047] Specifically, the central angle of the concave curved surface 30 needs to be less than 180°, so the curvature radius of the concave curved surface 30 needs to be greater than At the same time, when the curvature radius of the concave curved surface 30 is greater than 2d1, the concave curved surface 30 will be too close to the plane, affecting the modulation effect of the light. When the light is modulated, it is beneficial to improve the modulation effect of light.

[0048] Continue to refer Figure 3 and Figure 4 In some optional embodiments, the second sub-portion 222 includes at least two concave curved surfaces 30, and along the first direction X, the distance between two adjacent concave curved surfaces 30 is d2;

[0049] Among them, d2>0.

[0050] Specifically, when the second sub-portion 222 includes at least two concave surfaces 30, there is a spacing between two adjacent concave surfaces 30, which effectively reduces the difficulty of setting the concave surfaces 30 in the second sub-portion 222. At the same time, it avoids direct contact between two adjacent concave surfaces 30 to form a sharp angle, thereby avoiding damage to the display panel caused by the sharp angle.

[0051] It should be noted that Figure 4 It is exemplarily shown that the second sub-portion 222 includes two concave surfaces 30, that is, the lens element 21 includes four concave surfaces 30. In other embodiments of the present disclosure, the second sub-portion 222 may also include three or more concave surfaces 30, which will not be described one by one in the present disclosure.

[0052] Continue to refer Figure 3 and Figure 4In some optional embodiments, a concave curved surface 30 corresponds to a column of sub-pixels 11 arranged along the second direction Y, and the diameter d1 of the concave curved surface 30 along the first direction X;

[0053] in, P1 is the width of the sub-pixel 11 along the first direction X.

[0054] Specifically, a concave curved surface 30 corresponds to a column of sub-pixels 11 arranged along the second direction Y, that is, a concave curved surface 30 is disposed on one side of a column of sub-pixels 11 arranged along the second direction Y, and the diameter of the concave curved surface 30 along the first direction X is less than or equal to the width of the sub-pixel 11 along the first direction X, so that the concave curved surface 30 can modulate the light emitted by the corresponding sub-pixel 11. At the same time, when the diameter of the concave curved surface 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 portion of the second sub-section 222 cannot be set too large, which will cause the modulation effect of the light emitted by the sub-pixel 11 to deteriorate. This is beneficial to improving the modulation effect of the light emitted by the corresponding sub-pixel 11.

[0055] Continue to refer Figure 3 and Figure 4 In some optional embodiments, the concave curved surface 30 is centrally arranged on one side of a corresponding column of sub-pixels 11 arranged along the second direction Y.

[0056] Specifically, along the direction of the plane where the display panel 10 is located, the central axis of the concave curved surface 30 coincides with the straight line formed by the center points of a corresponding column of sub-pixels 11 arranged along the second direction Y, that is, the concave curved surface 30 is centrally arranged on one side of the corresponding column of sub-pixels 11 arranged along the second direction Y, which is beneficial to improving the uniformity of the light output effects in all directions of the display device.

[0057] Figure 7 for Figure 3 Another partial structural diagram of the display device, see Figure 3 and Figure 7 In some optional embodiments, a concave curved surface 30 corresponds to at least two columns of sub-pixels 11 arranged along the second direction Y.

[0058] Specifically, a concave curved surface 30 corresponds to at least two columns of sub-pixels 11 arranged along the second direction Y, which is beneficial to reducing the number of concave curved surfaces 30 and increasing the setting area of ​​the concave curved surfaces 30, thereby reducing the difficulty of setting the concave curved surfaces 30 and reducing normal costs.

[0059] It should be noted that Figure 7It is exemplarily shown that a concave curved surface 30 corresponds to three columns of sub-pixels 11 arranged along the second direction Y. In other embodiments of the present disclosure, a concave curved surface 30 may also correspond to another number of sub-pixels 11 arranged along the second direction Y, which will not be described one by one in the present disclosure.

[0060] Continue to refer Figure 3 and Figure 7 In some optional embodiments, the display device includes a plurality of pixel units 12, and the pixel unit 12 includes at least two sub-pixels 11 arranged along the first direction X;

[0061] A concave curved surface 30 corresponds to a column of pixel units 12 arranged along the second direction Y, and the diameter d1 of the concave curved surface 30 along the first direction X;

[0062] in, Wherein, P2 is the width of the pixel unit 12 along the first direction X.

[0063] Specifically, the display device includes a plurality of pixel units 12, and the pixel unit 12 includes at least two sub-pixels 11 arranged along a first direction X. Exemplarily, the pixel unit 12 includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel arranged along the first direction X. Of course, in other embodiments of the present disclosure, the pixel unit 12 may also include other numbers of sub-pixels 11, which will not be described in detail in the present disclosure.

[0064] A concave curved surface 30 corresponds to a column of pixel units 12 arranged along the second direction Y. The diameter d1 of the concave curved surface 30 along the first direction X is less than or equal to the width of the pixel unit 12 along the first direction X. Thus, the concave curved surface 30 can modulate the light emitted by the sub-pixel 11 in the corresponding pixel unit 12. At the same time, when the diameter of the concave curved surface 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 pixel unit 12 to deteriorate, resulting in a large difference in the effect of the viewpoints formed by different sub-pixels 11 in the pixel unit 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.

[0065] Continue to refer Figure 3 and Figure 7 In some optional embodiments, the concave curved surface 30 is centrally disposed on one side of a corresponding column of pixel units 12 arranged along the second direction Y.

[0066] Specifically, along the direction of the plane where the display panel 10 is located, the central axis of the concave curved surface 30 coincides with the straight line formed by the center points of a corresponding column of pixel units 12 arranged along the second direction Y, that is, the concave curved surface 30 is centrally arranged on one side of a corresponding column of pixel units 12 arranged along the second direction Y, which is beneficial to improving the uniformity of the light output effects in all directions of the display device.

[0067] Figure 8 for Figure 3 Another partial structural diagram of the display device, see Figure 3 and Figure 8 In some optional embodiments, the display device includes a plurality of pixel units 12, and the pixel unit 12 includes at least two sub-pixels 11 arranged along the first direction X;

[0068] In the pixel units 12 corresponding to the second sub-portion 222 , the sub-pixel 11 in at least one pixel unit 12 is located between two adjacent sub-pixels 11 in the pixel units 12 adjacent to the second sub-portion 222 along the first direction X.

[0069] Specifically, a concave curved surface 30 is provided in the second sub-section 222, and the sub-pixels 11 in the pixel unit 12 corresponding to the second sub-section 222 form a virtual image through the concave curved surface 30. In the pixel unit 12 corresponding to the second sub-section 222, the sub-pixels 11 in at least one pixel unit 12 are located between two adjacent sub-pixels 11 in the pixel unit 12 adjacent to it along the first direction X, so that the virtual image formed by the sub-pixels 11 in the pixel unit 12 corresponding to the second sub-section 222 through the concave curved surface 30 is the same as the arrangement of the sub-pixels 11 in the pixel unit 12 normally set, thereby avoiding the situation that the setting of the concave curved surface 30 causes confusion of viewpoints when displaying an image, and effectively improving the display effect. The pixel unit 12 normally set refers to the pixel unit 12 corresponding to the first sub-section 221.

[0070] It should be noted that Figure 8 An arrangement of the sub-pixels 11 in the pixel unit 12 corresponding to the second sub-portion 222 is exemplarily shown in the figure. In other embodiments of the present disclosure, the position of the virtual image formed by the imaging of the sub-pixels 11 in the pixel unit 12 corresponding to the second sub-portion 222 through the concave surface 30 can be calculated, and the arrangement of the sub-pixels 11 in the pixel unit 12 corresponding to the second sub-portion 222 can be adjusted according to the distance between the virtual image and the edge of the lens element 21. The present disclosure will not elaborate on this.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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, along the first direction, the two second sub-portions are respectively located on both sides of the first sub-portion, the second sub-portion includes at least one concave curved surface, one concave curved surface corresponds to at least one column of the sub-pixels arranged along the second direction, the first sub-portion is a planar structure, and the first sub-portion corresponds to at least one column of the sub-pixels arranged along the second direction; The light emitting surface is a convex curved surface; 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.

2. The display device according to claim 1, characterized in that The curvature radius of the concave surface is R2; in, Wherein, d1 is the diameter of the concave surface along the first direction.

3. The display device according to claim 1, characterized in that The second sub-portion includes at least two concave curved surfaces, and along the first direction, the distance between two adjacent concave curved surfaces is d2; Among them, d2>0.

4. The display device according to claim 1, characterized in that One of the concave curved surfaces corresponds to a column of the sub-pixels arranged along the second direction, and the diameter of the concave curved surface along the first direction is d1; in, P1 is the width of the sub-pixel along the first direction.

5. The display device according to claim 4, characterized in that: The concave curved surface is centrally arranged on one side of a corresponding column of the sub-pixels arranged along the second direction.

6. The display device according to claim 1, characterized in that: One of the concave curved surfaces corresponds to at least two columns of the sub-pixels arranged along the second direction.

7. The display device according to claim 6, characterized in that: The display device comprises a plurality of pixel units, each pixel unit comprising at least two sub-pixels arranged along the first direction; One of the concave curved surfaces corresponds to a column of the pixel units arranged along the second direction, and the diameter of the concave curved surface along the first direction is d1; in, Wherein, P2 is the width of the pixel unit along the first direction.

8. The display device according to claim 7, characterized in that: The concave curved surface is centrally arranged on one side of a corresponding column of the pixel units arranged along the second direction.

9. The display device according to claim 6, characterized in that: The display device comprises a plurality of pixel units, each pixel unit comprising at least two sub-pixels arranged along the first direction; In the pixel units corresponding to the first sub-portion, the sub-pixel in at least one of the pixel units is located between two adjacent sub-pixels in the pixel units adjacent to the pixel unit along the first direction.

Images