Display device and manufacturing method therefor

Abstract

A display device and a manufacturing method therefor. The display device comprises a display panel, a liquid crystal cell, and a linearly polarized light rotating structure arranged between the display panel and the liquid crystal cell; the liquid crystal cell is arranged on a light emitting side of the display panel, and the liquid crystal cell comprises a first substrate and a second substrate that are arranged opposite to each other, a lens set, a first alignment layer, a liquid crystal layer, and a second alignment layer; the lens set is located between the first substrate and the second substrate, and a plurality of lenses of the lens set extend in a first direction; alignment directions of the first alignment layer and the second alignment layer are parallel to the first direction; an included angle is formed between a polarization direction of linearly polarized light emitted from the display panel and the first direction; and the linearly polarized light rotating structure is configured to rotate the polarization direction of emergent light to be parallel to the first direction. Because an arrangement direction of liquid crystal molecules needs to be parallel to the polarization direction, the arrangement direction of the liquid crystal molecules can be enabled to be parallel to the first direction, so that the arrangement of the liquid crystal molecules has better consistency, thereby greatly reducing the occurrence of disclination of the liquid crystal molecules.

Description

Display device and manufacturing method thereof

[0001] This application claims priority to Chinese Patent Application No. 202410065629.8 filed on January 16, 2024, and the contents of the above-mentioned Chinese patent application disclosure are hereby incorporated by reference in their entirety as a part of this application. Technical Field

[0002] Embodiments of the present disclosure relate to a display device and a method for manufacturing the same. Background Art

[0003] Stereoscopic vision occurs when a person's left and right eyes receive images from different angles, which are then synthesized by the brain to perceive the layering and depth of objects.

[0004] Liquid crystal boxes are based on the birefringence of liquid crystals and use voltage to control the distribution of liquid crystal molecules, which can be electrically focused. They are widely used in focusing devices and human eye magnification devices, especially in 3D display. They have made outstanding contributions. The application of liquid crystal boxes can get rid of the constraints of 3D glasses on the human eye and achieve naked-eye 3D display. Summary of the Invention

[0005] In order to solve the problem of poor arrangement consistency of liquid crystal molecules on the orientation layer caused by the inconsistency between the lens extension direction of the liquid crystal box and the orientation direction of the orientation layer, the embodiments of the present disclosure provide a display device and a manufacturing method thereof, which rotates the polarization direction of the output light of the display panel to be parallel to the extension direction of the lens, so that the arrangement direction of the liquid crystal molecules on the orientation layer can have better consistency.

[0006] At least one embodiment of the present disclosure provides a display device, comprising: a display panel, wherein the output light of the display panel is linearly polarized light; a liquid crystal box, arranged on the light output side of the display panel, comprising: a first substrate and a second substrate arranged opposite to each other; a lens group, arranged on the first substrate and located between the first substrate and the second substrate, comprising a plurality of lenses, wherein the plurality of lenses extend along a first direction and are arranged along a second direction intersecting the first direction; a first orientation layer, arranged on a side of the lens group close to the second substrate; a liquid crystal layer, arranged on a side of the first orientation layer close to the second substrate; and a second orientation layer, arranged on a side of the second substrate facing the liquid crystal layer; a linearly polarized light rotation structure, arranged between the display panel and the liquid crystal box, the orientation directions of the first orientation layer and the second orientation layer are parallel to the first direction, the polarization direction of the linearly polarized light output from the display panel has an angle with the first direction, and the linearly polarized light rotation structure is configured to rotate the polarization direction of the output light to be parallel to the first direction.

[0007] For example, in a display device provided by an embodiment of the present disclosure, a side of the lens close to the first alignment layer includes a curved surface.

[0008] For example, in a display device provided by an embodiment of the present disclosure, the first alignment layer is conformally formed on the surface of the lens group.

[0009] For example, in a display device provided in one embodiment of the present disclosure, the linearly polarized light rotation structure includes a half-wave retarder, the half-wave retarder includes a fast axis and a slow axis, the fast axis is located on the center line of the angle, or the slow axis is located on the center line of the angle.

[0010] For example, in a display device provided in an embodiment of the present disclosure, the first alignment layer and the second alignment layer are aligned using a rubbing alignment process, and a rubbing direction of the rubbing alignment process is parallel to the first direction.

[0011] For example, in a display device provided in one embodiment of the present disclosure, the liquid crystal box further includes: a first electrode layer, arranged between the first substrate and the lens group; and a second electrode layer, arranged between the second orientation layer and the second substrate, the first electrode layer and the second electrode layer being configured to apply an electric field to the liquid crystal molecules of the liquid crystal layer to drive the liquid crystal molecules to deflect.

[0012] For example, in a display device provided in one embodiment of the present disclosure, the liquid crystal box further includes: a first electrode layer, arranged between the first substrate and the lens group; a second electrode layer, arranged between the first electrode layer and the lens group; and an insulating layer, arranged between the first electrode layer and the second electrode layer, the second electrode layer including a plurality of strip electrodes, and the first electrode layer and the second electrode layer are configured to apply an electric field to the liquid crystal molecules of the liquid crystal layer to drive the liquid crystal molecules to deflect.

[0013] For example, in a display device provided in an embodiment of the present disclosure, the liquid crystal box further includes: an electrode layer, arranged between the first substrate and the lens group, the electrode layer including a plurality of first strip electrodes and a plurality of second strip electrodes, the plurality of first strip electrodes and the plurality of second strip electrodes being alternately arranged along the second direction, and the first strip electrodes and the second strip electrodes being configured to apply an electric field to the liquid crystal molecules of the liquid crystal layer to drive the liquid crystal molecules to deflect.

[0014] For example, in a display device provided by an embodiment of the present disclosure, the refractive index of the plurality of lenses of the lens group is the same as the refractive index of the liquid crystal layer in one axial direction of the liquid crystal molecules.

[0015] For example, in the display device provided by an embodiment of the present disclosure, the display panel and the liquid crystal box have substantially the same rectangular planar shape, and the angle between the first direction and one side of the rectangle is an acute angle.

[0016] At least one embodiment of the present disclosure provides a method for manufacturing a display device, comprising: providing a display panel, a linearly polarized light rotation structure, and a liquid crystal box; and bonding the display panel, the linearly polarized light rotation structure, and the liquid crystal box together to form the display device, wherein the output light of the display panel is linearly polarized light, the linearly polarized light rotation structure is configured to rotate the polarization direction of the linearly polarized light to a first direction, the liquid crystal box comprises a lens group, a first alignment layer, and a liquid crystal layer stacked in sequence, the lens group comprises a plurality of lenses extending along a first direction and arranged along a second direction intersecting the first direction, and the alignment direction of the first alignment layer is parallel to the first direction.

[0017] For example, in the manufacturing method provided in one embodiment of the present disclosure, the linearly polarized light rotation structure includes a half-wave retarder, the half-wave retarder includes a fast axis and a slow axis, the polarization direction of the linearly polarized light has an angle with the first direction, and bonding the display panel, the linearly polarized light rotation structure and the liquid crystal box together includes: setting the fast axis or the slow axis of the half-wave retarder parallel to the center line of the angle.

[0018] For example, in a manufacturing method provided in an embodiment of the present disclosure, providing the liquid crystal box includes: providing a first substrate and a second substrate, forming the lens group on the first substrate, forming the first orientation layer on the surface of the lens group, performing an orientation process on the first orientation layer so that the orientation direction of the first orientation layer is parallel to the first direction, forming a second orientation layer on the second substrate, and performing an orientation process on the second orientation layer so that the orientation direction of the second orientation layer is parallel to the first direction.

[0019] For example, in the manufacturing method provided in an embodiment of the present disclosure, performing an alignment process on the first alignment layer includes: adopting a rubbing alignment process to orient the first alignment layer along a first direction.

[0020] For example, in the manufacturing method provided in one embodiment of the present disclosure, providing the liquid crystal box includes: providing a first substrate and a second substrate, forming the lens group on the first substrate, performing an orientation process on the surface of the lens group to form the first orientation layer, forming a second orientation layer on the second substrate, and performing an orientation process on the second orientation layer so that the orientation direction of the second orientation layer is parallel to the first direction.

[0021] For example, in a manufacturing method provided in an embodiment of the present disclosure, providing the liquid crystal box includes: providing a first substrate and a second substrate, forming the lens group and the first alignment layer on the first substrate, forming a second alignment layer on the second substrate, performing an alignment process on the second alignment layer so that the alignment direction of the second alignment layer is parallel to the first direction, and the first alignment layer is formed on the surface of the lens group through an integrated molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.

[0023] FIG1 is a schematic top view of a liquid crystal cell of a display device being aligned using a rubbing alignment process;

[0024] FIG2 is a schematic diagram showing that the alignment direction of the alignment layer of the liquid crystal cell shown in FIG1 is different from the extension direction of the lens;

[0025] FIG3 is a cross-sectional schematic diagram of a display device provided in one embodiment of the present disclosure;

[0026] FIG4 is a schematic diagram showing the rotation of the polarization direction of light in the display device shown in FIG3 ;

[0027] FIG5 is a schematic diagram showing that the alignment direction of the alignment layer of the liquid crystal cell shown in FIG3 is the same as the extension direction of the lens;

[0028] FIG6 is a schematic diagram of the liquid crystal cell shown in FIG3 using a rubbing alignment process;

[0029] FIG7 is a cross-sectional schematic diagram of another display device provided by an embodiment of the present disclosure;

[0030] FIG8 is a cross-sectional schematic diagram of another display device provided by an embodiment of the present disclosure; and

[0031] FIG9 is a flow chart of a method for manufacturing a display device provided in one embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0033] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0034] Unless otherwise defined, the features such as "parallel", "perpendicular" and "same" used in the embodiments of the present disclosure include the cases of "parallel", "perpendicular", "same" in a strict sense, as well as the cases of "approximately parallel", "approximately perpendicular", "approximately the same" and the like which contain certain errors. For example, the above-mentioned "approximately" may mean that the difference between the compared objects is 10% of the average value of the compared objects, or within 5%. When the number of a component or element is not specifically indicated below in the embodiments of the present disclosure, it means that the component or element may be one or more, or may be understood as at least one. "At least one" refers to one or more, and "multiple" refers to at least two. The "same-layer arrangement" in the embodiments of the present disclosure refers to the relationship between multiple film layers formed by the same material after the same step (for example, a one-step patterning process). The "same layer" here does not always mean that the thickness of multiple film layers is the same or the height of multiple film layers in the cross-sectional view is the same.

[0035] When a liquid crystal cell is used for 3D display, it is located on the light-emitting side of the display panel. The orientation direction of the liquid crystal cell's alignment layer must be the same as the polarization direction of the light emitted from the display panel. Typically, the extension direction of the lens of the liquid crystal cell differs from the polarization direction of the light emitted from the display panel, resulting in an inconsistency between the extension direction of the lens and the orientation direction of the alignment layer. If the extension direction of the lens is inconsistent with the orientation direction of the alignment layer, the outline of the lens will be uneven and undulating along the orientation direction of the alignment layer. Because the alignment layer is coated on the lens, the outline of the lens will affect the arrangement of the liquid crystal molecules on the alignment layer, resulting in a poor consistency in the arrangement of the liquid crystal molecules.

[0036] Figure 1 is a schematic top view of a liquid crystal cell in a display device being aligned using a rubbing alignment process; Figure 2 is a schematic diagram illustrating the alignment direction of the alignment layer in the liquid crystal cell shown in Figure 1 being different from the extension direction of the lenses. As shown in Figures 1 and 2, the polarization direction of the light emitted from the display panel of the display device is 01, and accordingly, the alignment direction of the alignment layer is 01. However, the extension direction 03 of the lenses 02 of the liquid crystal cell is different from the alignment direction 01 of the alignment layer formed on the lenses 02. For example, when aligning the alignment layer using the rubbing alignment process, the rubbing direction 01 of the rubbing roller 04 is different from the extension direction 03 of the lenses 02. As shown in Figure 2, the contours of the lenses in the alignment layer in the alignment direction 01 are uneven. This means that the rubbing roller 04 may not rub evenly or even at all between adjacent lenses 02. Furthermore, after the rubbing alignment process, the contours of the lenses in the alignment layer in the alignment direction 01 affect the alignment of the liquid crystal molecules, resulting in poor alignment consistency.

[0037] Embodiments of the present disclosure provide a display device and a method for manufacturing the same. The display device includes a display panel, a liquid crystal cell, and a linearly polarized light rotation structure. The light emitted from the display panel is linearly polarized, and the liquid crystal cell is disposed on the light-emitting side of the display panel. The liquid crystal cell includes a first substrate and a second substrate disposed opposite each other, a lens group, a first alignment layer, a liquid crystal layer, and a second alignment layer. The lens group is disposed on the first substrate and between the first and second substrates. The lens group includes a plurality of lenses extending along a first direction and arranged along a second direction intersecting the first direction. The first alignment layer is disposed on a side of the lens group proximate to the second substrate, the liquid crystal layer is disposed on a side of the first alignment layer proximate to the second substrate, and the second alignment layer is disposed on a side of the second substrate facing the liquid crystal layer. The linearly polarized light rotation structure is disposed between the display panel and the liquid crystal cell. The orientation directions of the first and second alignment layers are parallel to the first direction. The polarization direction of the linearly polarized light emitted from the display panel is at an angle to the first direction. The linearly polarized light rotation structure is configured to rotate the polarization direction of the emitted light to be parallel to the first direction.

[0038] In the display device provided by the embodiments of the present disclosure, the arrangement direction of the liquid crystal molecules (e.g., the long axis direction of the liquid crystal molecules) needs to be parallel to the polarization direction of the light emitted from the display panel. In other words, the alignment direction of the first alignment layer needs to be parallel to the polarization direction of the light emitted from the display panel. The linearly polarized light rotation structure rotates the polarization direction of the linearly polarized light emitted from the display panel to be parallel to the first direction. As a result, the alignment direction of the first alignment layer is parallel to the first direction, and the alignment direction of the first alignment layer is parallel to the extension direction of the lens. After the liquid crystal molecules are arranged by the first alignment layer, the arrangement direction of the liquid crystal molecules can be arranged along the extension direction of the lens, avoiding the adverse effect of the lens on the arrangement of the liquid crystal molecules caused by the difference between the extension direction of the lens and the alignment direction of the first alignment layer. This ensures greater consistency in the arrangement direction of the liquid crystal molecules on the first alignment layer, significantly reducing the occurrence of disclination in the liquid crystal molecules and improving the display quality of the display device.

[0039] Hereinafter, the display device and the manufacturing method thereof provided by the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0040] An embodiment of the present disclosure provides a display device. FIG3 is a cross-sectional schematic diagram of a display device provided by an embodiment of the present disclosure; FIG4 is a schematic diagram of the rotation of the polarization direction of light in the display device shown in FIG3; and FIG5 is a schematic diagram of the orientation direction of the orientation layer of the liquid crystal box shown in FIG3 being the same as the extension direction of the lens. As shown in FIG3 to FIG5, the display device 100 includes a display panel 110, a liquid crystal box 120, and a linearly polarized light rotation structure 130. The output light of the display panel 110 is linearly polarized light. The liquid crystal box 120 is arranged on the light output side of the display panel 110. The liquid crystal box 120 includes a first substrate 121 and a second substrate 122 arranged opposite to each other, a lens group 123, a first orientation layer 124, a liquid crystal layer 125, and a second orientation layer 126. The lens group 123 is disposed on the first substrate 121 and between the first substrate 121 and the second substrate 122. The lens group 123 includes a plurality of lenses 1230 extending along a first direction X and arranged along a second direction Y intersecting the first direction X. The first alignment layer 124 is disposed on the side of the lens group 123 closest to the second substrate 122. The liquid crystal layer 125 is disposed on the side of the first alignment layer 124 closest to the second substrate 122. The second alignment layer 126 is disposed on the side of the second substrate 122 facing the liquid crystal layer 125. The linearly polarized light rotation structure 130 is disposed between the display panel 110 and the liquid crystal cell 120. The alignment directions OA of the first and second alignment layers 124 and 126 are parallel to the first direction X. The polarization direction P of the linearly polarized light emitted from the display panel 110 forms an angle θ with the first direction X. The linearly polarized light rotation structure 130 is configured to rotate the polarization direction P of the emitted light to be parallel to the first direction X.

[0041] In the display device 100 provided in the embodiment of the present disclosure, since the arrangement direction of the liquid crystal molecules (for example, the long axis direction of the liquid crystal molecules) needs to be parallel to the polarization direction P of the light emitted from the display panel, that is, the alignment direction OA of the first alignment layer 124 needs to be parallel to the polarization direction P of the light emitted from the display panel, the polarization direction P of the linearly polarized light emitted from the display panel 110 is rotated to be parallel to the first direction X by the linearly polarized light rotation structure 130. As a result, the alignment direction OA of the first alignment layer 124 is parallel to the first direction X, and the alignment direction OA of the first alignment layer 124 is parallel to the extension direction X of the lens 1230. In the alignment direction OA of the first alignment layer 124, the shape or contour of the lens 1230 does not change. After the liquid crystal molecules are arranged through the first orientation layer 124, the arrangement direction of the liquid crystal molecules will not be affected by the lens 1230, thereby avoiding the adverse effect of the lens 1230 on the arrangement of the liquid crystal molecules caused by the difference between the extension direction X of the lens 1230 and the orientation direction OA of the first orientation layer 124. As a result, the arrangement direction of the liquid crystal molecules on the first orientation layer 124 can have better consistency, greatly reducing the occurrence of disclination of the liquid crystal molecules, and improving the display effect of the display device 100.

[0042] The embodiments of the present disclosure do not limit the manner in which the display panel 110, the liquid crystal cell 120, and the linearly polarized light rotation structure 130 are combined. For example, the three can be glued together or fixed together by physical means such as snap-fitting or screwing. FIG3 schematically shows that the lens group 123 is disposed on the first substrate 121, and the first substrate 121 is closer to the display panel 110 than the second substrate 122. However, the embodiments of the present disclosure do not limit this. For example, the lens group 123 can also be disposed on the second substrate 122, and the liquid crystal layer 125 is closer to the display panel 110 than the lens group 123. For example, the lens group 123 is disposed on the first substrate 121, and the second substrate 122 is closer to the display panel 110 than the first substrate 121.

[0043] The embodiments of the present disclosure do not limit the structure, material, and processing method of the first alignment layer.

[0044] For example, the first orientation layer can be made of the same material as the lens group. For example, the first orientation layer can be integrally formed with the lens group, thereby eliminating the need for an additional manufacturing process to form the first orientation layer; for example, the first orientation layer is a groove structure integrally formed on the surface of the lens group through a mold, and the extension direction of the groove structure is the orientation direction of the first orientation layer. For example, the lens group can be formed first, and then the first orientation layer is formed on the side of the lens group close to the liquid crystal layer through an orientation process to align the liquid crystal layer. For example, the orientation process can be a rubbing orientation process, and the rubbing direction of the rubbing orientation process is the orientation direction of the first orientation layer. Of course, the embodiments of the present disclosure do not limit the orientation process.

[0045] For example, the first alignment layer can also be made of a different material than the lens assembly. For example, the lens assembly is first formed, and then an alignment film is coated on the side of the lens assembly close to the liquid crystal layer. A rubbing alignment process or a photo-alignment process is used to form the first alignment layer on the alignment film to align the liquid crystal layer.

[0046] In some examples, as shown in Figures 3 and 5 , the side of the lens 1230 near the first alignment layer 124 includes a curved surface. When the extension direction X of the lens 1230 differs from the alignment direction OA of the first alignment layer 124, the shape or profile of the lens 1230 is uneven along the alignment direction OA of the first alignment layer 124, resulting in poor alignment consistency of the liquid crystal molecules along the uneven profile. By using the linearly polarized light rotation structure 130 to align the alignment direction OA of the first alignment layer 124 with the extension direction X of the lens 1230, the shape or profile of the lens 1230 remains unchanged along the alignment direction OA, resulting in more consistent alignment of the liquid crystal molecules along the first alignment layer 124.

[0047] For example, as shown in FIG3 , the side of the lens 1230 close to the first alignment layer 124 may be a curved surface curved toward the first substrate 121 . However, the embodiment of the present disclosure is not limited to this, and the side of the lens close to the first alignment layer 124 may also be a curved surface curved toward the second substrate 122 .

[0048] In some examples, as shown in Figures 3 and 5, the first alignment layer 124 is conformally formed on the surface of the lens group 123. For example, the thickness of the first alignment layer 124 can be substantially uniform and have substantially the same shape as the surface of the lens group 123. When the first alignment layer 124 is conformally formed on the surface of the lens group 123, the liquid crystal molecules are arranged along the extension direction X of the lens 1230. Because the shape or outline of the lens 1230 does not change along the alignment direction OA of the first alignment layer 124, the arrangement of the liquid crystal molecules is not affected by the curved surface shape of the lens 1230, resulting in a more consistent arrangement of the liquid crystal molecules on the first alignment layer 124. The presently disclosed embodiments do not limit the process for forming the first alignment layer 124 on the surface of the lens group 123. For example, coating methods such as ultrasonic atomization deposition, inkjet printing, and electrofluidic printing can be used.

[0049] In some examples, as shown in Figures 4 and 5, the linearly polarized light rotation structure 130 includes a half-wave retarder having a fast axis and a slow axis. The polarization direction P of the linearly polarized light forms an angle θ with the first direction X, and the fast axis of the half-wave retarder is located on the centerline L of the angle. For example, the slow axis of the half-wave retarder may be located on the centerline of the angle. The half-wave retarder can rotate the polarization direction P of the linearly polarized light emitted by the display panel 110 to be parallel to the first direction X, thereby aligning the alignment direction OA of the first alignment layer 124 with the extension direction X of the lens 1230.

[0050] Figure 6 is a schematic diagram of the liquid crystal cell shown in Figure 3 using a rubbing alignment process. As shown in Figures 3, 5, and 6, the first alignment layer 124 and the second alignment layer 126 are aligned using a rubbing alignment process, with the rubbing direction R being parallel to the first direction X. The linearly polarized light rotation structure 130 can rotate the polarization direction P of the linearly polarized light emitted from the display panel 110 to be parallel to the first direction X, thereby aligning the alignment direction OA of the alignment layer with the extension direction X of the lens 1230. In this case, the rubbing alignment process is performed, with the rubbing direction R of the rubbing roller 190 being parallel to the first direction X. This avoids the rubbing alignment process, as shown in Figures 1 and 2, where the rubbing roller 190 rubs in a direction different from the extension direction X of the lens 1230, thereby avoiding the risk of uneven or even incomplete rubbing by the rubbing roller 190, and improving the yield rate of the rubbing alignment process. Furthermore, after the rubbing alignment process, the shape or contour of the lens 1230 remains unchanged in the alignment direction OA of the alignment layer, and the arrangement of the liquid crystal molecules is not affected by the lens 1230, resulting in a more consistent arrangement of the liquid crystal molecules. Of course, the embodiment of the present disclosure does not limit the alignment process of the alignment layer, and a non-rubbing alignment process may also be used, for example, a photo-alignment process may be used.

[0051] In this example, the rubbing alignment process may be directly applied to the lens group 123 to form the first alignment layer 124 directly on the lens group 123. For example, the rubbing alignment process may also be applied to an alignment film coated on the lens group 123 to form the first alignment layer 124.

[0052] In some examples, as shown in FIG3 , the liquid crystal cell 120 further includes a first electrode layer 127 and a second electrode layer 128 . The first electrode layer 127 is disposed between the first substrate 121 and the lens assembly 123 , and the second electrode layer 128 is disposed between the second alignment layer 126 and the second substrate 122 . The first electrode layer 127 and the second electrode layer 128 are configured to apply an electric field to the liquid crystal molecules in the liquid crystal layer 125 to drive the liquid crystal molecules to deflect. Under the influence of the perpendicular electric field between the first electrode layer 127 and the second electrode layer 128 , the liquid crystal molecules in the liquid crystal layer 125 can deflect. Because the refractive indices of the liquid crystal molecules along their major and minor axes differ, switching between two-dimensional and three-dimensional display modes can be achieved in the display device 100 .

[0053] For example, the liquid crystal molecules can be positive liquid crystals. Under the action of the electric field of the first electrode layer 127 and the second electrode layer 128, the long axis direction of the liquid crystal molecules is parallel to the direction of the electric field lines. When there is no electric field between the first electrode layer 127 and the second electrode layer 128, the long axis direction of the liquid crystal molecules is parallel to the first substrate 121.

[0054] For example, the refractive index of the liquid crystal molecules along their short axes is the same as the refractive index of the lens 1230. When there is no electric field between the first electrode layer 127 and the second electrode layer 128, the display device achieves two-dimensional display. When an electric field is formed between the first electrode layer 127 and the second electrode layer 128, the display device achieves three-dimensional display. Of course, the embodiments of the present disclosure are not limited to this. For example, the liquid crystal molecules may also be negative liquid crystals.

[0055] In some examples, as shown in Figures 3 and 4, the display panel 100 and the liquid crystal cell 120 have substantially the same rectangular planar shape, and the angle between the first direction X and one side of the rectangle is an acute angle. It should be noted that "substantially the same" means that the overlapping area of ​​the display panel 100 and the liquid crystal cell 120 is greater than or equal to 80%.

[0056] FIG7 is a schematic cross-sectional view of another display device provided in accordance with an embodiment of the present disclosure. As shown in FIG7 , the liquid crystal cell 120 of the display device 100 includes a first substrate 121 and a second substrate 122 disposed opposite each other, a lens group 123, a first alignment layer 124, a liquid crystal layer 125, and a second alignment layer 126. The liquid crystal cell 120 also includes a first electrode layer 127, a second electrode layer 128, and an insulating layer 129. The first electrode layer 127 is disposed between the first substrate 121 and the lens group 123, the second electrode layer 128 is disposed between the first electrode layer 127 and the lens group 123, and the insulating layer 129 is disposed between the first electrode layer 127 and the second electrode layer 128. The first electrode layer 127 and the second electrode layer 128 are configured to apply an electric field to the liquid crystal molecules in the liquid crystal layer 125 to drive the liquid crystal molecules to deflect. Under the action of the horizontal electric field of the first electrode layer 127 and the second electrode layer 128, the liquid crystal molecules in the liquid crystal layer 125 can be deflected. Since the refractive index of the liquid crystal molecules in the long axis direction and the short axis direction are different, the display device 100 can switch between two-dimensional and three-dimensional display. Figure 7 schematically shows that the lens group 123 is arranged on the first substrate 121, and the first substrate 121 is closer to the display panel 110 than the second substrate 122. However, the embodiments of the present disclosure are not limited to this. For example, the lens group 123 can also be arranged on the second substrate 122, and the liquid crystal layer 125 is closer to the display panel 110 than the lens group 123. For example, the lens group 123 is arranged on the first substrate 121, and the second substrate 122 is closer to the display panel 110 than the first substrate 121.

[0057] FIG8 is a schematic cross-sectional view of another display device provided in accordance with an embodiment of the present disclosure. As shown in FIG8 , the liquid crystal cell 120 of the display device 100 includes a first substrate 121 and a second substrate 122 disposed opposite each other, a lens group 123, a first alignment layer 124, a liquid crystal layer 125, and a second alignment layer 126. The liquid crystal cell 120 includes an electrode layer disposed between the first substrate 121 and the lens group 123. The electrode layer includes a plurality of first strip electrodes 1201 and a plurality of second strip electrodes 1202. The plurality of first strip electrodes 1201 and the plurality of second strip electrodes 1202 are alternately arranged along a second direction Y. The first strip electrodes 1201 and the second strip electrodes 120 are configured to apply an electric field to liquid crystal molecules in the liquid crystal layer 125 to drive the liquid crystal molecules to deflect. For example, along the second direction Y, an insulating structure 1203 is provided between the alternately arranged first strip electrodes 1201 and the second strip electrodes 1202.

[0058] In this example, under the action of the horizontal electric field of the first strip electrodes 1201 and the second strip electrodes 1202, the liquid crystal molecules in the liquid crystal layer 125 can be deflected. Due to the different refractive indices of the liquid crystal molecules in the long axis direction and the short axis direction, the display device 100 can switch between two-dimensional and three-dimensional display. Figure 8 schematically shows that the lens group 123 is disposed on the first substrate 121, and the first substrate 121 is closer to the display panel 110 than the second substrate 122. However, the embodiments of the present disclosure are not limited to this. For example, the lens group 123 can also be disposed on the second substrate 122, and the liquid crystal layer 125 is closer to the display panel 110 than the lens group 123. For example, the lens group 123 is disposed on the first substrate 121, and the second substrate 122 is closer to the display panel 110 than the first substrate 121.

[0059] An embodiment of the present disclosure provides a method for manufacturing a display device. FIG9 is a flow chart of a method for manufacturing a display device provided by an embodiment of the present disclosure. As shown in FIG9 , the method for manufacturing a display device includes the following steps:

[0060] S110: providing a display panel, a linear polarized light rotation structure, and a liquid crystal cell;

[0061] S120: A display panel, a linearly polarized light rotation structure, and a liquid crystal box are bonded together to form a display device, wherein the output light of the display panel is linearly polarized light, the linearly polarized light rotation structure is configured to rotate the polarization direction of the linearly polarized light to a first direction, and the liquid crystal box includes a lens group, a first alignment layer, and a liquid crystal layer stacked in sequence, the lens group includes a plurality of lenses extending along a first direction and arranged along a second direction intersecting the first direction, and the alignment direction of the first alignment layer is parallel to the first direction.

[0062] In the method for manufacturing a display device provided in the embodiments of the present disclosure, because the arrangement direction of the liquid crystal molecules (e.g., the long axis direction of the liquid crystal molecules) needs to be parallel to the polarization direction of the light emitted from the display panel, that is, the alignment direction of the alignment layer needs to be parallel to the polarization direction of the light emitted from the display panel, the polarization direction of the linearly polarized light emitted from the display panel is rotated to be parallel to the first direction by a linearly polarized light rotation structure. As a result, the alignment direction of the first alignment layer is parallel to the first direction, and the alignment direction of the first alignment layer is parallel to the extension direction of the lens. The shape or profile of the lens does not change along the alignment direction of the first alignment layer. After the liquid crystal molecules are arranged by the first alignment layer, their arrangement is not affected by the lens. This avoids the adverse effect of the lens on the arrangement of the liquid crystal molecules caused by the difference between the extension direction of the lens and the alignment direction of the first alignment layer. This ensures greater consistency in the arrangement direction of the liquid crystal molecules on the first alignment layer, significantly reducing the occurrence of disclination in the liquid crystal molecules and improving the display quality of the display device.

[0063] In some examples, in the method for manufacturing the display device, the linearly polarized light rotation structure includes a half-wave retarder, the half-wave retarder includes a fast axis and a slow axis, the polarization direction of the linearly polarized light is angled with a first direction, and laminating the display panel, the linearly polarized light rotation structure, and the liquid crystal cell together includes arranging the fast axis or the slow axis of the half-wave retarder parallel to the centerline of the angle. The half-wave retarder can rotate the linearly polarized light emitted from the display panel to be parallel to the first direction, thereby aligning the alignment direction of the alignment layer with the extension direction of the lens.

[0064] In some examples, in the manufacturing method of the display device, providing a liquid crystal box includes: providing a first substrate and a second substrate, forming a lens group on the first substrate, forming a first alignment layer on the surface of the lens group, performing an alignment process on the first alignment layer so that the alignment direction of the first alignment layer is parallel to the first direction, forming a second alignment layer on the second substrate, and performing an alignment process on the second alignment layer so that the alignment direction of the second alignment layer is parallel to the first direction.

[0065] In some examples, in the method for manufacturing the display device, performing an alignment process on the first alignment layer includes: orienting the first alignment layer along a first direction using a rubbing alignment process. The linearly polarized light rotation structure can rotate the linearly polarized light emitted from the display panel parallel to the first direction, thereby aligning the alignment direction of the alignment layer with the extension direction of the lens. In this case, the rubbing alignment process is performed, and the rubbing direction of the rubbing roller in the rubbing alignment process is parallel to the first direction. This avoids the rubbing alignment process performed along a direction different from the extension direction of the lens, as shown in Figures 1 and 2. This avoids the risk of uneven rubbing or even no rubbing by the rubbing roller, thereby improving the yield rate of the rubbing alignment process. Furthermore, after the rubbing alignment process is completed, the shape or contour of the lens does not change in the alignment direction of the alignment layer, and the arrangement of the liquid crystal molecules is not affected by the lens, thereby achieving a more consistent arrangement of the liquid crystal molecules. Of course, the embodiments of the present disclosure are not limited to the alignment process of the alignment layer; non-rubbing alignment processes, such as optical alignment processes, may also be used.

[0066] In some examples, in the method for manufacturing the display device, performing an alignment process on the second alignment layer includes: aligning the second alignment layer along a first direction using a rubbing alignment process.

[0067] In some examples, in the manufacturing method of the display device, providing a liquid crystal box includes: providing a first substrate and a second substrate, forming a lens group on the first substrate, performing an orientation process on the surface of the lens group to form a first orientation layer, forming a second orientation layer on the second substrate, and performing an orientation process on the second orientation layer so that the orientation direction of the second orientation layer is parallel to the first direction.

[0068] For example, performing an alignment process on the surface of the lens group to form a first alignment layer includes: performing an alignment process on the surface of the lens group along a first direction using a rubbing alignment process to form the first alignment layer. Of course, the embodiment of the present disclosure does not limit the alignment process.

[0069] In some examples, in the method for manufacturing the display device, providing a liquid crystal cell includes providing a first substrate and a second substrate, forming a lens group and a first alignment layer on the first substrate, forming a second alignment layer on the second substrate, and performing an alignment process on the second alignment layer so that the alignment direction of the second alignment layer is parallel to the first direction. The first alignment layer is formed on the surface of the lens group through an integrated molding process, thereby eliminating the need for an additional manufacturing process to form the first alignment layer.

[0070] There are a few points to note:

[0071] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to conventional designs.

[0072] (2) Unless there is any conflict, the features of the same embodiment and different embodiments of the present disclosure may be combined with each other.

[0073] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A display device, comprising: A display panel, the emitted light of the display panel being linearly polarized light; A liquid crystal cell, disposed on the light-emitting side of the display panel, comprising: A first substrate and a second substrate disposed opposite to each other; A lens group, disposed on the first substrate and between the first substrate and the second substrate, comprising a plurality of lenses, the plurality of lenses extending in a first direction and arranged in a second direction intersecting the first direction; A first alignment layer, disposed on a side of the lens group close to the second substrate; A liquid crystal layer, disposed on a side of the first alignment layer close to the second substrate; and A second alignment layer, disposed on a side of the second substrate facing the liquid crystal layer; A linearly polarized light rotation structure, disposed between the display panel and the liquid crystal cell; wherein, the alignment directions of the first alignment layer and the second alignment layer are parallel to the first direction, the polarization direction of the linearly polarized light emitted from the display panel has an angle with the first direction, and the linearly polarized light rotation structure is configured to rotate the polarization direction of the emitted light to be parallel to the first direction.

2. The display device according to claim 1, wherein A side of the lens close to the first alignment layer includes a curved surface.

3. The display device according to claim 2, wherein, The first alignment layer is conformally formed on the surface of the lens group.

4. The display device according to claim 1, wherein, The linearly polarized light rotation structure includes a half-wave retarder, the half-wave retarder including a fast axis and a slow axis, the fast axis being located on the center line of the angle, or the slow axis being located on the center line of the angle.

5. The display device according to claim 1, wherein, The first alignment layer and the second alignment layer are aligned by a rubbing alignment process, and the rubbing direction of the rubbing alignment process is parallel to the first direction.

6. The display device according to any one of claims 1-5, wherein, The liquid crystal cell further comprises: A first electrode layer, disposed between the first substrate and the lens group; and A second electrode layer, disposed between the second alignment layer and the second substrate; wherein, the first electrode layer and the second electrode layer are configured to apply an electric field to the liquid crystal molecules of the liquid crystal layer to drive the liquid crystal molecules to deflect.

7. The display device according to any one of claims 1-5, wherein, The liquid crystal cell further comprises: A first electrode layer, disposed between the first substrate and the lens group; A second electrode layer, disposed between the first electrode layer and the lens group; and An insulating layer, disposed between the first electrode layer and the second electrode layer; wherein, the second electrode layer includes a plurality of strip electrodes, and the first electrode layer and the second electrode layer are configured to apply an electric field to the liquid crystal molecules of the liquid crystal layer to drive the liquid crystal molecules to deflect.

8. The display device according to any one of claims 1-5, wherein, The liquid crystal cell further comprises: An electrode layer, disposed between the first substrate and the lens group; wherein, the electrode layer includes a plurality of first strip electrodes and a plurality of second strip electrodes, the plurality of first strip electrodes and the plurality of second strip electrodes are alternately spaced along the second direction, and the first strip electrodes and the second strip electrodes are configured to apply an electric field to the liquid crystal molecules of the liquid crystal layer to drive the liquid crystal molecules to deflect.

9. The display device according to claim 6, wherein, The refractive indices of the plurality of lenses of the lens group are the same as the refractive index of the liquid crystal layer in one axial direction of the liquid crystal molecules.

10. The display device according to any one of claims 1-9, wherein, The display panel and the liquid crystal cell have a substantially identical rectangular planar shape, and the angle between the first direction and one side of the rectangle is an acute angle.

11. A method of manufacturing a display device, comprising: providing a display panel, a linearly polarized light rotation structure, and a liquid crystal cell; and bonding the display panel, the linearly polarized light rotation structure, and the liquid crystal cell together to form the display device, wherein the light emitted from the display panel is linearly polarized light, and the linearly polarized light rotation structure is configured to rotate the polarization direction of the linearly polarized light to a first direction, the liquid crystal cell includes a lens group, a first alignment layer, and a liquid crystal layer stacked in sequence, the lens group includes a plurality of lenses extending along the first direction and arranged in a second direction intersecting with the first direction, the alignment direction of the first alignment layer is parallel to the first direction.

12. The manufacturing method according to claim 11, wherein, The linearly polarized light rotation structure includes a half-wave retarder, the half-wave retarder includes a fast axis and a slow axis, and there is an angle between the polarization direction of the linearly polarized light and the first direction, bonding the display panel, the linearly polarized light rotation structure, and the liquid crystal cell together includes: arranging the fast axis or the slow axis of the half-wave retarder parallel to the center line of the angle.

13. The manufacturing method according to claim 11, wherein, Providing the liquid crystal cell includes: providing a first substrate and a second substrate, forming the lens group on the first substrate, forming the first alignment layer on the surface of the lens group, performing an alignment process on the first alignment layer so that the alignment direction of the first alignment layer is parallel to the first direction, forming a second alignment layer on the second substrate, performing an alignment process on the second alignment layer so that the alignment direction of the second alignment layer is parallel to the first direction.

14. The manufacturing method according to claim 13, wherein, Performing an alignment process on the first alignment layer includes: performing a rubbing alignment process on the first alignment layer along the first direction.

15. The manufacturing method according to claim 11, wherein, Providing the liquid crystal cell includes: providing a first substrate and a second substrate, forming the lens group on the first substrate, performing an alignment process on the surface of the lens group to form the first alignment layer, forming a second alignment layer on the second substrate, performing an alignment process on the second alignment layer so that the alignment direction of the second alignment layer is parallel to the first direction.

16. The manufacturing method according to claim 11, wherein, Providing the liquid crystal cell includes: providing a first substrate and a second substrate, forming the lens group and the first alignment layer on the first substrate, forming a second alignment layer on the second substrate, performing an alignment process on the second alignment layer so that the alignment direction of the second alignment layer is parallel to the first direction, wherein the first alignment layer is formed on the surface of the lens group by an integral molding process.

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