Display device and manufacturing method thereof

Abstract

The invention discloses a display device and a manufacturing method thereof. The display device comprises a display panel, a liquid crystal box and a linearly polarized light rotating structure arranged between the display panel and the liquid crystal box, the liquid crystal box is arranged on the light emitting side of the display panel, and the liquid crystal box comprises a first substrate, a second substrate, a lens set, a first orientation layer, a liquid crystal layer and a second orientation layer, the lens group is located between the first substrate and the second substrate, a plurality of lenses of the lens group extend in the first direction, the orientation direction of the first orientation layer and the orientation direction of the second orientation layer are parallel to the first direction, and an included angle is formed between the polarization direction of linearly polarized light emitted from the display panel and the first direction. The linearly polarized light rotating structure is configured to rotate the polarization direction of the emergent light to be parallel to the first direction. Due to the fact that the arrangement direction of the liquid crystal molecules needs to be parallel to the polarization direction, the arrangement direction of the liquid crystal molecules can be parallel to the first direction, arrangement of the liquid crystal molecules has better consistency, and occurrence of liquid crystal molecule misalignment is reduced to a great extent.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a display device and a manufacturing method thereof. Background Art

[0002] Stereoscopic vision is generated because the left and right eyes of a person receive images from different angles. After being synthesized by the brain, the sense of layer and depth of the perceived object is obtained.

[0003] Based on the birefringence of liquid crystal, a liquid crystal cell can control the distribution of liquid crystal molecules by voltage and perform electro-focusing. It is widely used in focusing devices and human eye magnifying devices, especially making outstanding contributions in 3D displays. The application of the liquid crystal cell can get rid of the bondage of 3D glasses to the human eye and achieve naked-eye 3D display. Summary of the Invention

[0004] To solve the problem of poor arrangement consistency of liquid crystal molecules on the alignment layer caused by the inconsistent extension direction of the lens of the liquid crystal cell and the alignment direction of the alignment layer, embodiments of the present disclosure provide a display device and a manufacturing method thereof, which rotate the polarization direction of the outgoing 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 alignment layer can have better consistency.

[0005] At least one embodiment of the present disclosure provides a display device, including: a display panel, the outgoing light of the display panel being linearly polarized light; a liquid crystal cell, disposed on the light-emitting side of the display panel, including: 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, including a plurality of lenses, the plurality of lenses extending along a first direction and arranged along 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, the alignment directions of the first alignment layer and the second alignment layer being parallel to the first direction, and the polarization direction of the linearly polarized light outgoing from the display panel having an included angle with the first direction, the linearly polarized light rotation structure being configured to rotate the polarization direction of the outgoing light to be parallel to the first direction.

[0006] For example, in the display device provided in an embodiment of the present disclosure, a side of the lens close to the first alignment layer includes a curved surface.

[0007] For example, in the display device provided in an embodiment of the present disclosure, the first alignment layer is conformally formed on the surface of the lens group.

[0008] For example, in the display device provided in an 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 included angle, or the slow axis is located on the center line of the included angle.

[0009] For example, in the display device provided in an embodiment of the present disclosure, 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.

[0010] For example, in the display device provided in an embodiment of the present disclosure, the liquid crystal cell further includes: 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, 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.

[0011] For example, in the display device provided in an embodiment of the present disclosure, the liquid crystal cell further includes: 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, 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.

[0012] For example, in the display device provided in an embodiment of the present disclosure, the liquid crystal cell further includes: an electrode layer disposed between the first substrate and the lens group, 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 arranged at intervals 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.

[0013] For example, in the display device provided in an embodiment of the present disclosure, 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.

[0014] For example, in the display device provided in an embodiment of the present disclosure, the display panel and the liquid crystal cell have substantially the same rectangular planar shape, and the included angle between the first direction and one side of the rectangle is an acute angle.

[0015] At least one embodiment of the present disclosure provides a method for manufacturing a display device, including: providing a display panel, a linearly polarized light rotation structure, and a liquid crystal cell; and laminating 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, 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, and the alignment direction of the first alignment layer is parallel to the first direction.

[0016] For example, in the manufacturing method provided by an 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, there is an angle between the polarization direction of the linearly polarized light and the 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 center line of the angle.

[0017] For example, in the manufacturing method provided by an embodiment of the present disclosure, 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, 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.

[0018] For example, in the manufacturing method provided by an embodiment of the present disclosure, performing an alignment process on the first alignment layer includes: performing a rubbing alignment process on the first alignment layer along the first direction.

[0019] For example, in the manufacturing method provided by an embodiment of the present disclosure, 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, 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.

[0020] For example, in the manufacturing method provided by an embodiment of the present disclosure, 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, 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, and the first alignment layer is formed on the surface of the lens group by an integral molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 and do not limit the present disclosure.

[0022] Figure 1 A top view schematic diagram of a liquid crystal cell of a display device using a rubbing alignment process for alignment;

[0023] Figure 2 For Figure 1 A schematic diagram showing that the alignment direction of the alignment layer of the liquid crystal cell shown is different from the extending direction of the lens;

[0024] Figure 3 A cross-sectional schematic diagram of a display device provided by an embodiment of the present disclosure;

[0025] Figure 4 For Figure 3 A schematic diagram of the rotation of the polarization direction of light of the display device shown;

[0026] Figure 5 For Figure 3 A schematic diagram showing that the alignment direction of the alignment layer of the liquid crystal cell shown is the same as the extending direction of the lens;

[0027] Figure 6 For Figure 3 A schematic diagram of the liquid crystal cell using a rubbing alignment process shown;

[0028] Figure 7 A cross-sectional schematic diagram of another display device provided by an embodiment of the present disclosure;

[0029] Figure 8 A cross-sectional schematic diagram of another display device provided by an embodiment of the present disclosure; and

[0030] Figure 9 A flowchart of a manufacturing method of a display device provided by an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0032] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The terms "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0033] Unless otherwise defined, features such as "parallel", "perpendicular", and "identical" used in the embodiments of the present disclosure include the strict meanings of "parallel", "perpendicular", "identical", etc., as well as cases with certain errors such as "substantially parallel", "substantially perpendicular", and "substantially identical". For example, the above-mentioned "substantially" may mean that the difference between the compared objects is within 10% or 5% of the average value of the compared objects. When the number of a component or element is not specifically indicated in the following text of the embodiments of the present disclosure, it means that the component or element may be one or more, or can be understood as at least one. "At least one" means one or more, and "a plurality" means at least two. The "same-layer setting" in the embodiments of the present disclosure refers to the relationship between multiple film layers formed of the same material after the same step (for example, one-step patterning process). Here, "same layer" does not always mean that the thicknesses of the multiple film layers are the same or the heights of the multiple film layers in the cross-sectional view are the same.

[0034] When the liquid crystal cell is used for three-dimensional display, the liquid crystal cell is located on the light-emitting side of the display panel, and the alignment direction of the alignment layer of the liquid crystal cell needs to be the same as the polarization direction of the light emitted from the display panel. Usually, the lens extension direction of the liquid crystal cell is different from the polarization direction of the light emitted from the display panel, resulting in the inconsistency between the lens extension direction and the alignment direction of the alignment layer. If the lens extension direction and the alignment direction of the alignment layer are inconsistent, the lens profile is uneven and undulating in the alignment direction of the alignment layer. Since the alignment layer is coated on the lens, the lens profile will affect the arrangement of liquid crystal molecules on the alignment layer, and the consistency of the arrangement of liquid crystal molecules will deteriorate.

[0035] Figure 1 A top view schematic diagram of a liquid crystal cell of a display device using a rubbing alignment process for alignment; Figure 2 is Figure 1 A schematic diagram showing that the alignment direction of the alignment layer of the liquid crystal cell shown is different from the extending direction of the lens. As Figure 1 and Figure 2 shown, the polarization direction of the light emitted from the display panel of the display device is 01. Correspondingly, the alignment direction of the alignment layer is 01. However, the extending direction 03 of the lens 02 of the liquid crystal cell is different from the alignment direction 01 of the alignment layer formed on the lens 02. For example, when using the rubbing alignment process to align the alignment layer, the rubbing direction of the rubbing roller 04 of the rubbing alignment process is 01, and the rubbing direction 01 is different from the extending direction 03 of the lens 02. As Figure 2 shown, on the alignment direction 01 of the alignment layer, the contour of the lens is uneven, rising and falling. On the one hand, at the positions between adjacent lenses 02, the rubbing roller 04 may rub unevenly or even not rub at all. On the other hand, after the rubbing alignment process is completed, on the alignment direction 01 of the alignment layer, the contour of the lens will affect the arrangement of liquid crystal molecules on the alignment layer, and the consistency of the arrangement direction of the liquid crystal molecules will become worse.

[0036] Embodiments of the present disclosure provide a display device and a manufacturing method thereof. 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 light, 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 to 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 substrate and the second substrate. The lens group includes a plurality of lenses that extend along a first direction and are arranged along a second direction intersecting the first direction. The first alignment layer is disposed on a side of the lens group close to the second substrate, the liquid crystal layer is disposed on a side of the first alignment layer close to the second substrate, the second alignment layer is disposed on a side of the second substrate facing the liquid crystal layer, and the linearly polarized light rotation structure is disposed between the display panel and the liquid crystal cell. The alignment directions of the first alignment layer and the second alignment layer are parallel to the first direction, and the polarization direction of the linearly polarized light emitted from the display panel has an included angle with 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.

[0037] In the display device provided by the embodiments of the present disclosure, since the arrangement direction of liquid crystal molecules (for example, the long axis direction of 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 first 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 through the linearly polarized light rotation structure. Thus, 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 through 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. Therefore, the arrangement direction of the liquid crystal molecules on the first alignment layer can have better consistency, greatly reducing the occurrence of liquid crystal molecule disclination and improving the display effect of the display device.

[0038] Next, the display device and its manufacturing method provided by the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0039] An embodiment of the present disclosure provides a display device. Figure 3 It is a schematic cross-sectional view of a display device provided by an embodiment of the present disclosure; Figure 4 is Figure 3 a schematic diagram of the polarization direction rotation of the light of the display device shown; Figure 5 is Figure 3 a schematic diagram showing that the alignment direction of the alignment layer of the liquid crystal cell shown is the same as the extension direction of the lens. As Figures 3 to 5As shown in the figure, the display device 100 includes a display panel 110, a liquid crystal cell 120, and a linearly polarized light rotation structure 130. The light emitted from the display panel 110 is linearly polarized light. The liquid crystal cell 120 is disposed on the light-emitting side of the display panel 110. The liquid crystal cell 120 includes a first substrate 121 and a second substrate 122 disposed opposite to each other, a lens group 123, a first alignment layer 124, a liquid crystal layer 125, and a second alignment 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. The plurality of lenses 1230 extend along a first direction X and are arranged along a second direction Y intersecting the first direction X. The first alignment layer 124 is disposed on a side of the lens group 123 close to the second substrate 122. The liquid crystal layer 125 is disposed on a side of the first alignment layer 124 close to the second substrate 122. The second alignment layer 126 is disposed on a 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 alignment layer 124 and the second alignment layer 126 are parallel to the first direction X. The polarization direction P of the linearly polarized light emitted from the display panel 110 has an included 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.

[0040] In the display device 100 provided by the embodiments of the present disclosure, since the arrangement direction of liquid crystal molecules (for example, the long axis direction of 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. Thus, 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 alignment layer 124, the arrangement direction of the liquid crystal molecules is not affected by the lens 1230 either, 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 alignment direction OA of the first alignment layer 124. Thus, the arrangement direction of the liquid crystal molecules on the first alignment layer 124 can have better consistency, greatly reducing the occurrence of liquid crystal molecule disclination and improving the display effect of the display device 100.

[0041] The embodiments of the present disclosure do not limit the combination manner of the display panel 110, the liquid crystal cell 120, and the linearly polarized light rotation structure 130. For example, the three can be pasted together, or can be fixed together by physical means such as snap connection and screw connection. Figure 3Schematically 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 thereto. For example, the lens group 123 may 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.

[0042] The embodiments of the present disclosure do not limit the structure, material, processing method, etc. of the first alignment layer.

[0043] For example, the first alignment layer may be made of the same material as the lens group. For example, the first alignment layer may be integrally formed with the lens group, so that no additional manufacturing process is required to form the first alignment layer; for example, the first alignment layer is a groove structure integrally formed on the surface of the lens group by a mold, and the extending direction of the groove structure is the alignment direction of the first alignment layer. For example, the lens group may also be formed first, and then the first alignment layer is formed on the lens group on the side close to the liquid crystal layer by an alignment process to align the liquid crystal layer. For example, the alignment process may be a rubbing alignment process, and the rubbing direction of the rubbing alignment process is the alignment direction of the first alignment layer. Of course, the embodiments of the present disclosure do not limit the alignment process.

[0044] For example, the first alignment layer may also be made of a different material from the lens group. For example, the lens group is formed first, and then an alignment film is coated on the side of the lens group close to the liquid crystal layer, and a rubbing alignment process or a photoalignment process is used to act on the alignment film to form the first alignment layer to align the liquid crystal layer.

[0045] In some examples, as Figure 3 and Figure 5 shown, the side of the lens 1230 close to the first alignment layer 124 includes a curved surface. When the extending direction X of the lens 1230 is different from the alignment direction OA of the first alignment layer 124, in the alignment direction OA of the first alignment layer 124, the shape or contour of the lens 1230 is uneven, and the consistency of the arrangement of liquid crystal molecules on the uneven contour is relatively poor. By the linearly polarized light rotation structure 130, the alignment direction OA of the first alignment layer 124 is made the same as the extending direction X of the lens 1230, so that in the alignment direction OA, the shape or contour of the lens 1230 does not change, and the arrangement of liquid crystal molecules on the first alignment layer 124 has better consistency.

[0046] For example, as Figure 3As shown, the side of the lens 1230 close to the first alignment layer 124 can be a curved surface that bends towards the first substrate 121. However, the embodiments of the present disclosure are not limited thereto, and the side of the lens close to the first alignment layer 124 can also be a curved surface that bends towards the second substrate 122.

[0047] In some examples, as Figure 3 and Figure 5 shown, 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. Since the shape or profile of the lens 1230 does not change in 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, making the arrangement of the liquid crystal molecules on the first alignment layer 124 have better consistency. The embodiments of the present disclosure are not limited to the process of 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 electrohydrodynamic printing can be used.

[0048] In some examples, as Figure 4 and Figure 5 shown, the linearly polarized light rotation structure 130 includes a half-wave retarder. The half-wave retarder includes a fast axis and a slow axis. The polarization direction P of the linearly polarized light has an angle θ with the first direction X, and the fast axis of the half-wave retarder is located on the center line L of the angle. For example, it can also be that the slow axis of the half-wave retarder is located on the center line of the angle. Through the half-wave retarder, the polarization direction P of the linearly polarized light emitted by the display panel 110 can be rotated to be parallel to the first direction X, so that the alignment direction OA of the first alignment layer 124 can be the same as the extension direction X of the lens 1230.

[0049] Figure 6 For Figure 3 shown is a schematic diagram of the liquid crystal cell using the rubbing alignment process. As Figure 3 , Figure 5 and Figure 6 shown, the first alignment layer 124 and the second alignment layer 126 are aligned by the rubbing alignment process, and the rubbing direction R of the rubbing alignment process is parallel to the first direction X. Through the linearly polarized light rotation structure 130, the polarization direction P of the linearly polarized light emitted by the display panel 110 can be rotated to be parallel to the first direction X, so that the alignment direction OA of the alignment layer can be the same as the extension direction X of the lens 1230. At this time, when the rubbing alignment process is used for alignment, the rubbing direction R of the rubbing roller 190 of the rubbing alignment process is parallel to the first direction X, avoiding such as Figure 1 and Figure 2The shown friction roller 190 performs friction alignment in a direction different from the extension direction X of the lens 1230, avoiding the risk of uneven friction or even no friction of the friction roller 190 caused thereby, and improving the yield rate of the friction alignment process. Moreover, after the friction alignment process is completed, in the alignment direction OA of the alignment layer, the shape or contour of the lens 1230 does not change, and the arrangement of liquid crystal molecules is not affected by the lens 1230 either, so that the arrangement of liquid crystal molecules can have better consistency. Of course, the alignment process of the alignment layer in the embodiments of the present disclosure is not limited, and a non-friction alignment process can also be adopted. For example, a photo-alignment process can be adopted.

[0050] In this example, the friction alignment process can directly act on the lens group 123 to directly form the first alignment layer 124 on the lens group 123. For example, the friction alignment process can also act on the alignment film coated on the lens group 123 to form the first alignment layer 124.

[0051] In some examples, as Figure 3 shown, 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 group 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 of the liquid crystal layer 125 to drive the liquid crystal molecules to deflect. Under the action of the vertical electric field of the first electrode layer 127 and the second electrode layer 128, the liquid crystal molecules of the liquid crystal layer 125 can deflect. Since the refractive indices of the long axis direction and the short axis direction of the liquid crystal molecules are different, the two-dimensional and three-dimensional display switching of the display device 100 can be realized.

[0052] 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.

[0053] For example, the refractive index of the short axis direction of the liquid crystal molecules 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 realizes two-dimensional display. When an electric field is formed between the first electrode layer 127 and the second electrode layer 128, the display device realizes three-dimensional display. Of course, the embodiments of the present disclosure are not limited thereto. For example, the liquid crystal molecules can also be negative liquid crystals.

[0054] In some examples, as Figure 3 and Figure 4As shown, 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%.

[0055] Figure 7 This is a cross-sectional schematic diagram of another display device provided by an embodiment of the present disclosure. As Figure 7 shown, the liquid crystal cell 120 of the display device 100 includes a first substrate 121 and a second substrate 122 disposed opposite to 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 further 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 of 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 of the liquid crystal layer 125 can deflect. Since the refractive indices of the long axis direction and the short axis direction of the liquid crystal molecules are different, the two-dimensional and three-dimensional display switching of the display device 100 can be realized. Figure 7 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 embodiment of the present disclosure does not limit this. For example, the lens group 123 may 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.

[0056] Figure 8 This is a cross-sectional schematic diagram of another display device provided by an embodiment of the present disclosure. As Figure 8As shown, the liquid crystal cell 120 of the display device 100 includes a first substrate 121 and a second substrate 122 disposed opposite to 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 at intervals along the second direction Y. The first strip electrodes 1201 and the second strip electrodes 1202 are configured to apply an electric field to the liquid crystal molecules of 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 included between the alternately arranged first strip electrodes 1201 and second strip electrodes 1202.

[0057] 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 of the liquid crystal layer 125 can deflect. Since the refractive indices of the long axis direction and the short axis direction of the liquid crystal molecules are different, the switching between two-dimensional and three-dimensional displays of the display device 100 can be realized. Figure 8 It is schematically shown 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 thereto. For example, the lens group 123 may 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.

[0058] An embodiment of the present disclosure provides a method for manufacturing a display device. Figure 9 It is a flowchart of a method for manufacturing a display device provided by an embodiment of the present disclosure. As Figure 9 shown, the method for manufacturing the display device includes the following steps:

[0059] S110: Provide a display panel, a linearly polarized light rotation structure, and a liquid crystal cell;

[0060] S120: Bond the display panel, the linearly polarized light rotation structure, and the liquid crystal cell together to form a display device. The light emitted from 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 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 along a second direction intersecting with the first direction. The alignment direction of the first alignment layer is parallel to the first direction.

[0061] In the method for manufacturing a display device provided in the embodiments of the present disclosure, since the arrangement direction of liquid crystal molecules (for example, the long axis direction of 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 through a linearly polarized light rotation structure. Thus, 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. In the alignment direction of the first alignment layer, the shape or contour of the lens does not change. After the liquid crystal molecules are arranged through the first alignment layer, the arrangement of the liquid crystal molecules is not affected by 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. Therefore, the arrangement direction of the liquid crystal molecules on the first alignment layer can have better consistency, greatly reducing the occurrence of liquid crystal molecule disclinations and improving the display effect of the display device.

[0062] 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. There is an angle between the polarization direction of the linearly polarized light and the first direction. Attaching the display panel, the linearly polarized light rotation structure, and the liquid crystal cell together includes: setting the fast axis or the slow axis of the half-wave retarder parallel to the center line of the angle. The linearly polarized light emitted from the display panel can be rotated to be parallel to the first direction through the half-wave retarder, so that the alignment direction of the alignment layer can be the same as the extension direction of the lens.

[0063] 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 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.

[0064] In some examples, in the method for manufacturing the display device, performing an alignment process on the first alignment layer includes: performing a rubbing alignment process on the first alignment layer along the first direction. The polarization direction of the linearly polarized light emitted from the display panel can be rotated to be parallel to the first direction through the linearly polarized light rotation structure, so that the alignment direction of the alignment layer can be the same as the extension direction of the lens. At this time, when performing the rubbing alignment process, the rubbing direction of the rubbing roller of the rubbing alignment process is parallel to the first direction, avoiding Figure 1 and Figure 2The friction roller shown performs friction alignment in a direction different from the extension direction of the lens, avoiding the risk of uneven friction or even lack of friction of the friction roller, and improving the yield rate of the friction alignment process. Moreover, after the friction alignment process is completed, in the alignment direction of the alignment layer, the shape or profile of the lens does not change, and the arrangement of liquid crystal molecules is not affected by the lens, so that the arrangement of liquid crystal molecules can have better consistency. Of course, the alignment process of the alignment layer in the embodiments of the present disclosure is not limited, and a non-friction alignment process can also be used. For example, a photo-alignment process can be used.

[0065] In some examples, in the method of manufacturing the display device, the alignment process for the second alignment layer includes: performing alignment on the second alignment layer in a first direction by using a friction alignment process.

[0066] In some examples, in the method of manufacturing the display device, providing a liquid crystal cell includes: providing a first substrate and a second substrate, forming a lens group on the first substrate, performing an alignment process on the surface of the lens group to form a first alignment layer, 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.

[0067] 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 in a first direction by using a friction alignment process to form a first alignment layer. Of course, the alignment process in the embodiments of the present disclosure is not limited.

[0068] In some examples, in the method of 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 by an integral molding process, so that no additional manufacturing process is required to form the first alignment layer.

[0069] The following points need to be explained:

[0070] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can refer to the general design.

[0071] (2) Without conflict, the features in the same embodiment and different embodiments of the present disclosure can be combined with each other.

[0072] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope 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 comprises 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 comprises a half-wave retarder, the half-wave retarder comprising 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 comprises 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 comprises 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 arranged at intervals 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 1-5, 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 for 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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