3D display device and manufacturing method thereof

Abstract

The invention provides a 3D display device and a manufacturing method of the 3D display device. The 3D display device comprises a display panel which is provided with a plurality of pixel rows which extend along a first direction and are sequentially arranged along a second direction; the light adjusting structure is located on the light emitting side of the display panel; the light adjusting structure comprises a first substrate, a first compensation layer located on the side, away from the display panel, of the first substrate, and a second compensation layer located on the side, away from the first substrate, of the first compensation layer. The refractive index of the first compensation layer is lower than that of the second compensation layer, the side, facing the second compensation layer, of the first compensation layer is provided with a plurality of protrusions, and at least part of the orthographic projection of the protrusions on the first substrate is overlapped with the orthographic projection of the pixel rows on the first substrate.

Description

3D display device and manufacturing method of 3D display device TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of 3D display, and in particular to a 3D display device and a manufacturing method of 3D display device. BACKGROUND

[0002] The working principle of three-dimensional (3D) display technology is that, for the same scene, the left eye and the right eye of a viewer receive images respectively, and the distance between the two eyes of the viewer (i.e. the interpupillary distance, about 65mm) causes a slight difference in the viewing angle of the two eyes, so that the images observed by the left eye and the right eye of the viewer are also slightly different, and this difference is called "binocular parallax", and after fusion by the visual cortex of the brain, a stereoscopic effect is formed.

[0003] With the development of display technology, 3D display is very popular, and 3D technology refers to a display technology that directly allows the left and right eyes to see images with parallax from a display screen without any tools, and the two images are transmitted to the brain to produce a display technology with a stereoscopic image.

[0004] SUMMARY

[0005] The present disclosure provides a 3D display device and a manufacturing method of 3D display device. The 3D display device comprises:

[0006] a display panel having a plurality of pixel rows extending along a first direction and arranged in sequence along a second direction;

[0007] a light adjusting structure located on the light emitting side of the display panel;

[0008] The light adjusting structure comprises a first substrate, a liquid crystal layer located on the side of the first substrate facing the display panel, a bonding adhesive layer located on the side of the liquid crystal layer facing the display panel, a first compensation layer located on the side of the first substrate away from the display panel, and a second compensation layer located on the side of the first compensation layer away from the first substrate; the light adjusting structure is bonded to the display panel through the bonding adhesive layer; the refractive index of the first compensation layer is lower than the refractive index of the second compensation layer, and the side of the first compensation layer facing the second compensation layer has a plurality of protrusions, and the protrusions at least partially overlap the projection of the pixel rows on the first substrate.

[0009] In a possible implementation, in a direction perpendicular to the extension direction of the pixel rows, the protrusions comprise a first inclined surface;

[0010] The first inclined surface is located within the projection of the pixel rows on the first substrate.

[0011] In a possible implementation, in a direction perpendicular to the extending direction of the pixel row, the protrusion comprises an end surface connected with the first inclined surface and away from the first substrate side;

[0012] The end surface has an overlapping area with the gap between adjacent pixel rows in the projection of the first substrate.

[0013] In a possible implementation, the first compensation layer comprises a first surface located between two adjacent protrusions;

[0014] The first inclined surface and the first surface form an included angle ranging from 0° to 90° with the extension of the protrusion position.

[0015] In a possible implementation, the width of the protrusion along the second direction is equal to the width of the pixel row along the second direction.

[0016] In a possible implementation, the width of the pixel row along the second direction is an integer multiple of the width of the protrusion along the second direction.

[0017] In a possible implementation, the protrusion is strip-shaped; a plurality of protrusions extend along the first direction and are arranged in sequence along the second direction.

[0018] In a possible implementation, the first compensation layer comprises a plurality of protrusion groups extending along the first direction and arranged along the second direction; the protrusion group comprises a plurality of protrusions arranged in sequence along the first direction.

[0019] In a possible implementation, the plurality of protrusions in the same protrusion group are arranged at equal intervals.

[0020] In a possible implementation, the protrusion group comprises a plurality of sub-protrusion groups arranged in sequence along the first direction; the sub-protrusion group comprises at least two protrusions arranged along the first direction.

[0021] The first interval of the protrusions in the same sub-protrusion group along the first direction is smaller than the second interval between adjacent sub-protrusion groups along the first direction.

[0022] In a possible implementation, the first interval of the protrusions in any two sub-protrusion groups is equal; the second interval of any adjacent two sub-protrusion groups along the first direction is equal.

[0023] In a possible implementation, a cross-sectional shape of the protrusion perpendicular to the extending direction of the pixel row comprises a trapezoid, a triangle, a semicircle, or a semi-ellipse.

[0024] In a possible implementation, a difference between the refractive index of the first compensation layer and the second compensation layer ranges from 0.1 to 0.9.

[0025] In a possible implementation, the light adjusting structure further comprises a protective layer on a side of the second compensation layer away from the first compensation layer.

[0026] A difference between the refractive index of the protective layer and the second compensation layer is smaller than a difference between the refractive index of the second compensation layer and the first compensation layer.

[0027] In a possible implementation, the refractive index of the protective layer is equal to the refractive index of the second compensation layer.

[0028] In a possible implementation, a side of the protective layer away from the second compensation layer further comprises a plurality of particles.

[0029] In a possible implementation, the plurality of pixel rows comprises first pixel rows and second pixel rows arranged alternately along the second direction.

[0030] The liquid crystal layer comprises a plurality of first liquid crystal rows and second liquid crystal rows, the first liquid crystal rows extend along the first direction and are arranged alternately along the second direction, a projection of the first liquid crystal rows on the first substrate overlaps a projection of the first pixel rows on the first substrate, and a projection of the second liquid crystal rows on the first substrate overlaps a projection of the second pixel rows on the first substrate.

[0031] The handedness of light emitted through the first liquid crystal rows is the same, the handedness of light emitted through the second liquid crystal rows is the same, and the handedness of light emitted through the first liquid crystal rows and the second liquid crystal rows is different.

[0032] In a possible implementation, the display panel comprises a plurality of pixels, the liquid crystal layer comprises a plurality of liquid crystal repeating units, a projection of the liquid crystal repeating units on the first substrate overlaps a projection of the pixels on the first substrate, the liquid crystal repeating units comprise at least two liquid crystal parts, the liquid crystal alignment directions of different liquid crystal parts are different, and the liquid crystal alignment directions of the same liquid crystal part are the same, and the handedness of light emitted through different liquid crystal parts of the same liquid crystal repeating unit is different.

[0033] In a possible implementation, the pixel row comprises a plurality of pixels arranged sequentially along the first direction.

[0034] The liquid crystal layer has a plurality of liquid crystal cell rows extending along the first direction and arranged along the second direction, and the liquid crystal cell rows in the orthographic projection of the first substrate coincide with the pixel rows in the orthographic projection of the first substrate.

[0035] The liquid crystal cell rows include at least two sub-liquid crystal cell rows extending along the first direction and arranged along the second direction; the liquid crystal alignment directions of adjacent two sub-liquid crystal cell rows in the same liquid crystal cell row are different, and the liquid crystal alignment directions of the same sub-liquid crystal cell row are the same.

[0036] In a possible implementation, the light adjusting structure further includes a plurality of first electrodes and a second electrode; the first electrodes in the orthographic projection of the first substrate coincide with the pixels in the orthographic projection of the first substrate.

[0037] In a possible implementation, the light adjusting structure further includes a first light shielding layer; the first light shielding layer includes a first light shielding portion extending along the first direction and arranged along the second direction.

[0038] The first light shielding portion in the orthographic projection of the first substrate at least partially overlaps the gap between adjacent pixel rows in the orthographic projection of the first substrate.

[0039] In a possible implementation, the first light shielding portion is an integral connection structure.

[0040] In a possible implementation, the first light shielding portion includes a plurality of first sub-light shielding portions arranged along the first direction in sequence, and has a gap between adjacent first sub-light shielding portions.

[0041] In a possible implementation, the display panel has a plurality of pixel columns extending along the second direction and arranged along the first direction.

[0042] The display panel includes a second light shielding layer; the second light shielding layer includes a plurality of first light shielding strips extending along the first direction and arranged along the second direction, and a plurality of second light shielding strips extending along the second direction and arranged along the first direction; the first light shielding strips in the orthographic projection of the first substrate coincide with the gaps between adjacent pixel rows in the orthographic projection of the first substrate; and the second light shielding strips in the orthographic projection of the first substrate coincide with the gaps between adjacent pixel columns in the orthographic projection of the first substrate.

[0043] The first light shielding strips in the orthographic projection of the first substrate cover the first light shielding portion in the orthographic projection of the first substrate.

[0044] In a possible implementation, the display panel has a plurality of pixel columns extending along the second direction and arranged along the first direction.

[0045] The light adjusting structure further includes a first light shielding layer; the first light shielding layer includes a plurality of third light shielding strips extending along the first direction and arranged along the second direction, and a plurality of fourth light shielding strips extending along the second direction and arranged along the first direction.

[0046] The third light shielding strips, in the orthographic projection of the first substrate, coincide with the gaps between adjacent pixel rows in the orthographic projection of the first substrate; and the fourth light shielding strips, in the orthographic projection of the first substrate, coincide with the gaps between adjacent pixel columns in the orthographic projection of the first substrate.

[0047] In a possible implementation, of the light adjusting structure and the display panel, only the light adjusting structure has the first light shielding layer.

[0048] In a possible implementation, the display panel includes a second light shielding layer; the second light shielding layer includes a plurality of second light shielding parts extending along the first direction and arranged along the second direction; the second light shielding parts, in the orthographic projection of the first substrate, are located in the gaps between adjacent two pixel rows in the orthographic projection of the first substrate.

[0049] The second light shielding parts include a plurality of second sub-light shielding parts in sequence along the first direction, and have gaps between adjacent second sub-light shielding parts.

[0050] In a possible implementation, the display panel includes a plurality of transistors; the second sub-light shielding parts, in the orthographic projection of the first substrate, cover the transistors in the orthographic projection of the first substrate.

[0051] The embodiments of the present disclosure further provide a manufacturing method of the 3D display device provided in the embodiments of the present disclosure, and the manufacturing method includes:

[0052] forming the light adjusting structure with the first compensation layer and the second compensation layer;

[0053] attaching the light adjusting structure to the light exit side of the display panel;

[0054] The forming the light adjusting structure with the first compensation layer and the second compensation layer includes:

[0055] forming the first compensation layer with a plurality of protrusions on one side of the first substrate;

[0056] forming the second compensation layer on the side of the first compensation layer away from the first substrate.

[0057] In one possible implementation, before forming the first compensation layer with a plurality of protrusions on one side of the first substrate, the forming the light adjusting structure with the first compensation layer and the second compensation layer further comprises:

[0058] forming a first black matrix and a liquid crystal layer on the other side of the first substrate. BRIEF DESCRIPTION OF DRAWINGS

[0059] FIG. 1 is a cross-sectional view of a 3D display device according to an embodiment of the present disclosure;

[0060] FIG. 2A is a schematic view of a pixel row and a first compensation layer according to an embodiment of the present disclosure;

[0061] FIG. 2B is a schematic view of a distribution of the first compensation layer in a display panel according to FIG. 2A;

[0062] FIG. 2C is a schematic view of a single film layer of the first compensation layer according to FIG. 2A;

[0063] FIG. 2D is a cross-sectional view of a 3D display device according to an embodiment of the present disclosure;

[0064] FIG. 3 is a schematic view of a first compensation layer according to an embodiment of the present disclosure;

[0065] FIG. 4 is a schematic view of a first compensation layer according to an embodiment of the present disclosure;

[0066] FIG. 5 is a schematic view of a light path of a compensation layer according to an embodiment of the present disclosure;

[0067] FIG. 6A is a schematic view of a pixel row and a first compensation layer according to an embodiment of the present disclosure;

[0068] FIG. 6B is a schematic view of a distribution of the first compensation layer in a display panel according to FIG. 6A;

[0069] FIG. 7 is a schematic view of a protective layer according to an embodiment of the present disclosure;

[0070] FIG. 8A is a schematic view of a partial structure of a 3D display device according to an embodiment of the present disclosure;

[0071] FIG. 8B is a schematic view of a pixel layer according to FIG. 8A;

[0072] FIG. 8C is a schematic view of a first electrode of a light adjusting structure according to FIG. 8A;

[0073] FIG. 8D is a schematic view of a liquid crystal layer of a light adjusting structure according to FIG. 8A;

[0074] FIG. 8E is a schematic view of a partial structure of a 3D display device according to an embodiment of the present disclosure;

[0075] FIG. 8F is a schematic view of the first electrode of the light adjusting structure in FIG. 8E;

[0076] FIG. 8G is a schematic view of the liquid crystal layer of the light adjusting structure in FIG. 8E;

[0077] FIG. 8H is a second schematic view from above of part of the structure of a 3D display device according to an embodiment of the disclosure;

[0078] FIG. 9 is a second schematic view in perspective of part of the structure of a 3D display device according to an embodiment of the disclosure;

[0079] FIG. 10A is a third schematic view in perspective of part of the structure of a 3D display device according to an embodiment of the disclosure;

[0080] FIG. 10B is a schematic view from above of part of the structure of the 3D display device corresponding to FIG. 10A;

[0081] FIG. 10C is a first schematic view of the positional relationship of black matrices of different layers according to an embodiment of the disclosure;

[0082] FIG. 10D is a schematic view of an enlarged view of the dashed circle in FIG. 10C;

[0083] FIG. 11 is a first schematic view from above of a light shielding layer of a display panel according to an embodiment of the disclosure;

[0084] FIG. 12A is a second schematic view of the positional relationship of black matrices of different layers according to an embodiment of the disclosure;

[0085] FIG. 12B is a schematic view of the positional relationship of black matrices of different layers according to an embodiment of the disclosure;

[0086] FIG. 13 is a third schematic view of the positional relationship of black matrices of different layers according to an embodiment of the disclosure;

[0087] FIG. 14A is a second schematic view from above of a light shielding layer of a display panel according to an embodiment of the disclosure;

[0088] FIG. 14B is a schematic view of the positional relationship of black matrices of different layers according to an embodiment of the disclosure;

[0089] FIG. 14C is a schematic view of the positional relationship of black matrices of different layers according to an embodiment of the disclosure;

[0090] FIG. 15 is a schematic view of the principle of moiré;

[0091] FIG. 16A is a first schematic view of alignment marks of a display panel;

[0092] FIG. 16B is a schematic view of alignment marks of a light adjusting structure;

[0093] FIG. 16C is a schematic view of the alignment of a display panel and a light adjusting structure;

[0094] FIG. 17A is a schematic view of alignment marks at a third position W3 of the display panel;

[0095] FIG. 17B is a schematic view of alignment marks at a third position W3 of the light adjusting structure;

[0096] FIG. 17C is a schematic view of the alignment of the alignment marks shown in FIG. 17A and the alignment marks shown in FIG. 17B;

[0097] FIG. 18 is a schematic view of a method for manufacturing a 3D display device according to an embodiment of the present disclosure;

[0098] FIG. 19 is a schematic view of a method for manufacturing a first compensation layer according to an embodiment of the present disclosure;

[0099] FIG. 20 is a schematic view of a method for manufacturing a first compensation layer according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0100] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the scope of protection of the present disclosure. The embodiments can be implemented in multiple different forms. A person of ordinary skill in the art can easily understand that the manners and contents can be converted into one or more forms without departing from the purpose of the present disclosure and the scope thereof. Therefore, the present disclosure should not be interpreted as being limited to the contents described in the following embodiments. The embodiments in the present disclosure and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0101] Unless otherwise defined, technical terms or scientific terms used in the present disclosure should be understood as having the same meaning as commonly understood by a person of ordinary skill in the art to which the present disclosure belongs. The terms “first”, “second” and similar terms used in the present disclosure do not indicate any order, number or importance, but are only used to distinguish different constituent parts. The terms “include” or “contain” and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, without excluding other elements or objects. The terms “connect” or “connected” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0102] As used herein, "about" or "approximately" means within a range that is acceptable to one of ordinary skill in the art given the measurement and error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations, or within ± 30%, 20%, 10%, 5% of the stated value. In the present specification, "about" can be a case where the index values differ within 10%.

[0103] In the drawings, the thicknesses of layers, films, panels, regions, etc., are exaggerated for clarity. The exemplary embodiments are described herein with reference to cross-sectional illustrations that are schematic illustrations of idealized embodiments. As such, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and / or tolerances, are to be expected. Thus, embodiments described herein are not to be construed as being limited to the particular shapes of regions as illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an area illustrated or described as flat can typically have rough and / or nonlinear features. Moreover, sharp angles that are illustrated can be rounded. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region and are not intended to limit the scope of the present claims.

[0104] In this specification, terms of "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicating the positional or directional relationship are used to describe the positional relationship of constituent elements with reference to the drawings only for the convenience of describing the present specification and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting on the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the direction in which the constituent elements are described. Therefore, it is not limited to the words described in the specification, and can be appropriately replaced according to the situation.

[0105] In this specification, unless explicitly stated and limited otherwise, the terms "mount", "connected", "connection" should be interpreted broadly. For example, it can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate piece, or communication inside two elements. The above terms in the present disclosure can be understood according to the situation by those skilled in the art.

[0106] In this specification, "electrically connected" includes the case where elements are connected through an element having a certain electrical action. The element having a certain electrical action is not particularly limited as long as it can transmit an electrical signal between the elements to be connected. Examples of the element having a certain electrical action include not only an electrode and a wiring but also a switching element such as a transistor, a resistor, an inductor, a capacitor, another element having one or more functions, and the like.

[0107] In this specification, a transistor refers to an element including a gate electrode (gate), a drain electrode, and a source electrode. The transistor has a channel region between the drain electrode (a drain electrode terminal, a drain region, or a drain) and the source electrode (a source electrode terminal, a source region, or a source), and current can flow through the drain electrode, the channel region, and the source electrode. In this specification, the channel region refers to a region where current flows mainly.

[0108] In addition, the gate of the transistor can be referred to as a control electrode. The functions of the "source electrode" and the "drain electrode" are sometimes interchanged with each other in dependence on the direction in which current flows, the kind of transistor used, or the like. Thus, in this specification, the "source electrode" and the "drain electrode" are interchanged with each other in some cases.

[0109] In this specification, "parallel" means a state where an angle formed between two straight lines is greater than or equal to -10° and less than or equal to 10°, and thus can include a state where an angle formed between two straight lines is greater than or equal to -5° and less than or equal to 5°. In addition, "perpendicular" means a state where an angle formed between two straight lines is greater than or equal to 80° and less than or equal to 100°, and thus can include a state where an angle formed between two straight lines is greater than or equal to 85° and less than or equal to 95°.

[0110] In this specification, a triangle, a rectangle, a trapezoid, a pentagon, or a hexagon is not necessarily strict, can be an approximate triangle, rectangle, trapezoid, pentagon, or hexagon, and can have some small deformation due to a tolerance, can have a rounded corner, a curved side, and deformation, or the like.

[0111] In this specification, a "film" and a "layer" can be interchanged with each other. For example, a "conductive layer" can be replaced with a "conductive film". Similarly, an "insulating film" can be replaced with an "insulating layer".

[0112] In order to keep the following description of embodiments of the present disclosure clear and concise, detailed description of known functions and known components will be omitted in this specification.

[0113] 3D imaging is generated by the visual difference of two eyes. The distance between two pupils of a person is generally about 6.5 cm. When two eyes simultaneously view an object, the left eye can see more left side content of the object, and the right eye can see more right side content of the object. Different images are formed on the retinas of the left and right eyes. After the two different images are comprehensively processed by the brain, the front and back, left and right of the object can be distinguished, thereby generating stereoscopic vision. The 3D display technology is based on the principle of binocular disparity. An image displayed on a liquid crystal screen is artificially separated into two images, and then the two images are independently sent to the left and right eyes of a person. After the images of two different viewpoints are analyzed and processed by the brain, an image with left-right, up-down, front-back and other stereoscopic effects is formed. The glass pattern retarder (GPR) 3D display technology converts linearly polarized light of the same polarization state emitted on odd and even pixel rows into left-handed circularly polarized light and right-handed circularly polarized light respectively in units of pixels. A viewer can wear circularly polarized light glasses. The left and right lenses of the glasses can respectively transmit left-handed circularly polarized light and right-handed circularly polarized light. After the glasses, the left and right eyes can respectively identify the images on the odd and even rows of the panel, thereby realizing 3D stereoscopic effect.

[0114] However, the related GPR 3D display product and the PR 3D display product have a good and large horizontal (left-right) viewing angle parallel to the pixel row direction, but a small vertical (up-down) viewing angle perpendicular to the pixel row direction, which needs to be increased. That is, the up-down viewing angle perpendicular to the pixel row direction is small, and the viewing distance is limited.

[0115] Therefore, the embodiments of the present disclosure provide a 3D display device. Referring to FIGS. 1, 2A-2C, FIG. 1 can be a sectional view of FIG. 2A along the dashed line e1, FIG. 2B can be a distribution diagram of pixel rows in the display panel of FIG. 2A, and FIG. 2C can be a single film layer diagram of the first compensation layer in FIG. 2A. The 3D display device includes:

[0116] The display panel 100 has a plurality of pixel rows P100 extending along a first direction X and arranged in sequence along a second direction Y.

[0117] The light adjusting structure 200 is located on the light emitting side of the display panel 100.

[0118] The light adjusting structure 200 includes: a first substrate 201, a liquid crystal layer 205 located on the side of the first substrate 201 facing the display panel 100, and a bonding adhesive layer 300 located on the side of the liquid crystal layer 205 facing the display panel 100, a first compensation layer 202 located on the side of the first substrate 201 away from the display panel 100, and a second compensation layer 203 located on the side of the first compensation layer 202 away from the first substrate 201; the light adjusting structure 200 is bonded to the display panel 100 through the bonding adhesive layer 300; the refractive index of the first compensation layer 202 is lower than the refractive index of the second compensation layer 203, and the side of the first compensation layer 202 facing the second compensation layer 203 has a plurality of protrusions D, at least part of the projections D in the orthographic projection of the first substrate 201 overlaps the orthographic projection of the pixel row P100 on the first substrate 201.

[0119] In the embodiments of the present disclosure, the light adjusting structure 200 of the display panel includes: a first compensation layer 202 with a relatively low refractive index, and a second compensation layer 203 with a relatively high refractive index, the side of the first compensation layer 202 facing the second compensation layer 203 has a plurality of protrusions D, at least part of the projections D in the orthographic projection of the first substrate 201 overlaps the orthographic projection of the pixel row P100 on the first substrate 201, because the protrusions D have a certain inclination angle, the light emitted by the display panel is refracted after passing through the first compensation layer 202 and the second compensation layer 203 with a refractive index from low to high, which can expand the up-down viewing angle range perpendicular to the pixel row direction, realize viewing angle compensation, improve the GPR 3D display effect, and expand the viewing distance.

[0120] In a possible implementation, referring to FIGS. 1, 2A-2C, in the direction perpendicular to the extension direction of the pixel row P100, the protrusion D includes: a first inclined surface D1; the orthographic projection of the first inclined surface D1 on the first substrate 201 is located within the orthographic projection of the pixel row P100 on the first substrate 201. In the embodiments of the present disclosure, the protrusion D includes: the first inclined surface D1, the light emitted by the pixel row P100 can adjust the direction of the emitted light through the first inclined surface D1, thereby increasing the up-down viewing angle range perpendicular to the pixel row direction, and realizing viewing angle compensation.

[0121] In a possible implementation, in combination with FIG. 2C, the protrusion D can have only the first inclined surface D1 in the first direction X, that is, as shown in FIG. 2C, the first inclined surface D1 is located on the upper and lower sides, and the left and right two sides of the protrusion D can be perpendicular to the plane of the first substrate 201; in another possible implementation, referring to FIG. 3, the protrusion D can have the first inclined surface D1 in the first direction X, and can also have two first inclined surfaces D1 in the second direction Y, that is, the four sides of the protrusion D can all be the first inclined surfaces.

[0122] In a possible implementation, referring to FIG. 1 and FIG. 2A-2C, the second compensation layer 203 fills the concave-convex structure formed by the first compensation layer 202.

[0123] In a possible implementation, referring to FIG. 1 and FIG. 2A-2C, in a direction perpendicular to the extension direction of the pixel row P100, the convex D includes an end surface D2 connected with the first inclined surface D1 and away from the first substrate 201 side; the end surface D2 in the orthographic projection of the first substrate 201 has an overlapping area with the gap J0 between adjacent pixel rows P100 in the orthographic projection of the first substrate 201. In a possible implementation, the end surface D2 in the orthographic projection of the first substrate 201 covers the gap J0 between adjacent pixel rows P100 in the orthographic projection of the first substrate 201. In a possible implementation, the part of the end surface D2 in the orthographic projection of the first substrate 201 overlaps with the gap J0 between adjacent pixel rows P100 in the orthographic projection of the first substrate 201, and the part of the end surface D2 in the orthographic projection of the first substrate 201 overlaps with the pixel row P100 in the orthographic projection of the first substrate 201.

[0124] In a possible implementation, referring to FIG. 1 and FIG. 2A, the end surface D2 has two end surface boundaries D20 parallel to the first direction X, and the end surface boundaries D20 in the orthographic projection of the first substrate 201 are located within the pixel row P100 in the orthographic projection of the first substrate 201. That is, the entire inclined surface D1 of the convex D in the orthographic projection of the first substrate 201 can be located within the pixel row P100 in the orthographic projection of the first substrate 201.

[0125] In a possible implementation, referring to FIG. 1 and FIG. 2A-2C, the end surface D2 can be a plane.

[0126] In a possible implementation, referring to FIG. 1 and FIG. 2A-2C, the first compensation layer 202 includes a first surface S1 located between two adjacent convexes D; and the included angle a formed by the first inclined surface D1 and the extension plane of the first surface S1 at the position of the convex D ranges from 0° to 90°. The included angle a formed by the first inclined surface D1 and the extension plane of the first surface S1 at the position of the convex D can be an acute angle.

[0127] In a possible implementation, the included angle a formed by the first inclined surface D1 and the extension plane of the first surface S1 at the position of the convex D ranges from 30° to 60°. In a possible implementation, the included angle a formed by the first inclined surface D1 and the extension plane of the first surface S1 at the position of the convex D is 30°, 45° or 60°.

[0128] In a possible implementation, the 3D display device provided by the embodiments of the present disclosure can have a vertical viewing angle range of ±10° to ±60° in the direction perpendicular to the pixel row direction. In a possible implementation, the 3D display device provided by the embodiments of the present disclosure can have a vertical viewing angle range of ±10° to ±40° in the direction perpendicular to the pixel row direction. In a possible implementation, the 3D display device provided by the embodiments of the present disclosure can have a vertical viewing angle range of ±10° to ±30° in the direction perpendicular to the pixel row direction. In a possible implementation, the 3D display device provided by the embodiments of the present disclosure can have a vertical viewing angle range of ±10° to ±20° in the direction perpendicular to the pixel row direction. In a possible implementation, the 3D display device provided by the embodiments of the present disclosure can have a vertical viewing angle range of ±10° to ±15° in the direction perpendicular to the pixel row direction.

[0129] In the related art, a GPR 3D display product has a measured vertical viewing angle of about ±8° in the direction perpendicular to the pixel row direction. By arranging a first compensation layer 202 (for example, an organic ORG layer) with a refractive index of 1.57 and a second compensation layer 203 (for example, indium tin oxide) with a refractive index of 1.76 on the side of the light adjusting structure 200 away from the display panel, and by controlling different included angles α, different expansion degrees of the viewing angle can be obtained. For example, when α = 30°, the viewing angle can be expanded by ±3.5°; when α = 45°, the viewing angle can be expanded by ±5.9°; and when α = 60°, the viewing angle can be expanded by ±9.4°. If the first compensation layer 202 has a refractive index of 1.46 (for example, silicon oxide) and the second compensation layer 203 has a refractive index of 1.91 (for example, silicon nitride), when α = 30°, the viewing angle can be expanded by ±7.5°; when α = 45°, the viewing angle can be expanded by ±12.3°; and when α = 60°, the viewing angle can be expanded by ±18.5°.

[0130] In a possible implementation, the difference between the refractive indices of the first compensation layer 202 and the second compensation layer 203 ranges from 0.1 to 0.9. In a possible implementation, the difference between the refractive indices of the first compensation layer 202 and the second compensation layer 203 is 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, or 0.9.

[0131] In a possible implementation, the thickness of the first compensation layer 202 ranges from 100 nm to 500 nm. In a possible implementation, the thickness of the second compensation layer 203 ranges from 100 nm to 500 nm.

[0132] In a possible implementation, as shown in FIG. 2A, the width a1 of the protrusion D along the second direction Y is equal to the width a2 of the pixel row P100 along the second direction Y. In the embodiment of the present disclosure, the width a1 of the protrusion D along the second direction Y is equal to the width a2 of the pixel row P100 along the second direction Y, that is, the width a1 of the protrusion D along the second direction Y is a width at the order of microns, which can have a better effect of expanding the viewing angle, and the width a1 of the protrusion D is also within the range that can be achieved by the current process.

[0133] In a possible implementation, the width a1 of the protrusion D along the second direction Y is less than the width a2 of the pixel row P100 along the second direction Y. In this way, a better effect of compensating the viewing angle can be achieved. In a possible implementation, the width a2 of the pixel row P100 along the second direction Y is an integer multiple of the width a1 of the protrusion D along the second direction Y.

[0134] In a possible implementation, as shown in FIG. 2D, the width a1 of the protrusion D along the second direction Y is greater than the width a2 of the pixel row P100 along the second direction Y. In a possible implementation, the width a1 of the protrusion D along the second direction Y is an integer multiple of the width a2 of the pixel row P100 along the second direction Y, for example, two times / four times / six times, and so on, different widths, which can avoid causing crosstalk between different pixels.

[0135] In a possible implementation, as shown in FIGS. 2A-2C, 3 and 4, the first compensation layer 201 includes a plurality of protrusion groups DZ extending along the first direction X and arranged along the second direction Y, and each protrusion group DZ includes a plurality of protrusions D arranged along the first direction X. In the embodiment of the present disclosure, in the direction parallel to the pixel row P100, the plurality of protrusions D are independent structures spaced from each other, the shape structure of the protrusion D is similar to that of the spacer, and the mask plate used to manufacture the spacer of the display panel can be used to form the protrusion D, so that the vertical viewing angle of the 3D display device can be expanded without increasing the manufacturing cost of the 3D display device.

[0136] In a possible implementation, the length a3 of the protrusion D in the direction parallel to the pixel row (that is, the first direction X) can be the same as the length of the pixel (one pixel can include three sub-pixels); in a possible implementation, the length of the protrusion D in the direction parallel to the pixel row can be the same as the length of the sub-pixel; in a possible implementation, the length of the protrusion D in the direction parallel to the pixel row can be greater than the length of the pixel (one pixel can include three sub-pixels); in a possible implementation, the length of the protrusion D in the direction parallel to the pixel row can be less than the length of the pixel (one pixel can include three sub-pixels).

[0137] Optionally, in the direction parallel to the pixel row, the length of the sub-pixel can be the length of the sub-pixel opening area, and the length of the pixel can be the maximum distance between the adjacent three sub-pixel opening areas. For example, the pixel can include a red sub-pixel, a green sub-pixel, and a blue sub-pixel arranged in sequence in the direction of the pixel row. The length of the pixel can be understood as the distance between the outer edge of the red sub-pixel away from the green sub-pixel and the outer edge of the blue sub-pixel away from the green sub-pixel.

[0138] In a possible implementation, as shown in FIGS. 2A, 2C, and 3, in the same protrusion group DZ, the plurality of protrusions D are arranged at equal intervals.

[0139] In a possible implementation, as shown in FIG. 4, the protrusion group DZ includes a plurality of sub-protrusion groups DZ0 arranged in sequence in the first direction X. The sub-protrusion group DZ0 includes at least two protrusions D arranged in the first direction X. The first distance b1 between the adjacent two protrusions D in the same sub-protrusion group DZ0 in the first direction X. The second distance b2 between the adjacent two sub-protrusion groups DZ0 in the first direction X. The first distance b1 is less than the second distance b2. In the embodiment of the present disclosure, the first distance b1 is less than the second distance b2, that is, the adjacent protrusions D are arranged at unequal intervals in the direction parallel to the pixel row, which can avoid the increase of the viewing angle between the adjacent pixel rows, which can cause light overlapping to appear rainbow or crosstalk, and prevent the occurrence of adverse effects.

[0140] Optionally, the first distance b1 can be the minimum distance between the adjacent two protrusions D in the same sub-protrusion group DZ0 in the first direction X. The second distance b2 can be the minimum distance between the adjacent two sub-protrusion groups DZ0 in the first direction X.

[0141] In a possible implementation, as shown in FIG. 4, the sub-protrusion groups DZ0 of the adjacent two protrusion groups DZ in the second direction Y are distributed in a staggered manner. For example, as shown in FIG. 4, the gap between the sub-protrusion group DZ0 of the previous protrusion group DZ and the two sub-protrusion groups DZ0 of the next protrusion group DZ is opposite.

[0142] In a possible implementation, as shown in FIG. 4, the first distance b1 in any two sub-protrusion groups DZ0 is equal. The second distance b2 of any adjacent two sub-protrusion groups DZ0 in the first direction X is equal.

[0143] In a possible implementation, as shown in FIGS. 6A and 6B, the protrusion D is in a strip shape. The plurality of protrusions D extend in the first direction X and are arranged in sequence in the second direction Y. In the embodiment of the present disclosure, the protrusion D is in a strip shape, which is simple in process and easy to implement.

[0144] In a possible implementation, the cross-sectional shape of the protrusion D in a direction perpendicular to the extending direction of the pixel row P100 includes a trapezoid, a triangle, a semicircle, or a semi-ellipse.

[0145] In a possible implementation, referring to FIG. 1, the light adjusting structure 200 further includes a protective layer 204 located on a side of the second compensation layer 203 away from the first compensation layer 202, and a difference between the refractive index of the protective layer 204 and the second compensation layer 203 is smaller than a difference between the refractive index of the second compensation layer 203 and the first compensation layer 202. In the embodiment of the present disclosure, the light adjusting structure 200 further includes the protective layer 204, which can protect the second compensation layer 203 and avoid scratching.

[0146] In a possible implementation, the refractive index of the protective layer 204 is equal to the refractive index of the second compensation layer 203. In the embodiment of the present disclosure, the refractive index of the protective layer 204 is equal to the refractive index of the second compensation layer 203, which avoids affecting the 3D display effect.

[0147] In a possible implementation, referring to FIG. 7, the side of the protective layer 204 away from the second compensation layer 203 further has a plurality of particles 2040. A smooth plane is prone to specular reflection, which affects the viewing effect. In the embodiment of the present disclosure, the side of the protective layer 204 away from the second compensation layer 203 further has a plurality of particles 2040, that is, the surface of the protective layer 204 is added with tiny nano particles and is designed as a concave-convex structure, which can achieve an anti-glare effect.

[0148] In a possible implementation, referring to FIG. 5, the first compensation layer 202, the second compensation layer 203, and the protective layer 204 on the side of the light adjusting structure 200 away from the display panel can use reflection and refraction of light between layers with different refractive indexes to cause interference, use the principle of coherent cancellation, adjust the thickness and refractive index of each film layer, and make the light after the compensation layer coherent and cancel each other out. The entire compensation layer (including the first compensation layer 202, the second compensation layer 203, and the protective layer 204) can also play a role in reducing reflectivity.

[0149] In a possible implementation, referring to FIG. 1, FIG. 2A-2C, the plurality of pixel rows P100 includes: first pixel rows L arranged alternately along the second direction Y, and second pixel rows R; the liquid crystal layer 205 includes: a plurality of first liquid crystal rows LP extending along the first direction X and arranged alternately along the second direction Y, and second liquid crystal rows RP; a projection of the first liquid crystal rows LP on the first substrate 201 overlaps a projection of the first pixel rows L on the first substrate 201; a projection of the second liquid crystal rows RP on the first substrate 201 overlaps a projection of the second pixel rows R on the first substrate 201; optionally, the first liquid crystal rows LP correspond to the first pixel rows L on the first substrate 201; the second liquid crystal rows RP correspond to the second pixel rows R; light emitted by the first liquid crystal rows LP has the same handedness, light emitted by the second liquid crystal rows RP has the same handedness, and light emitted by the first liquid crystal rows LP and the second liquid crystal rows RP has different handedness. Optionally, the light emitted by the first liquid crystal rows LP is left circularly polarized light, and the light emitted by the second liquid crystal rows RP is right circularly polarized light; or, optionally, the light emitted by the first liquid crystal rows LP is right circularly polarized light, and the light emitted by the second liquid crystal rows RP is left circularly polarized light. A viewer can wear circularly polarized glasses, the left and right lenses of which can respectively transmit left and right circularly polarized light, and the left and right eyes can respectively recognize the images of the odd and even rows on the panel after passing through the circularly polarized glasses, thereby achieving a 3D stereoscopic effect.

[0150] In a specific implementation, the liquid crystal layer 205 can be a polymer liquid crystal (PLC), and the liquid crystal layer 205 can be exposed to directional alignment by a light alignment process, so that the polymer liquid crystal (PLC) is cured at an optimal position.

[0151] In a possible implementation, referring to FIG. 1, the light adjusting structure 200 further includes: an alignment liquid layer 207 located between the first substrate 201 and the liquid crystal layer 205.

[0152] In a possible implementation, for the 3D display device shown in FIG. 1, the light adjusting structure 200 can further include a conductive layer (not shown in FIG. 1) located between the first substrate 201 and the alignment liquid layer 207, and optionally, referring to FIG. 1, the light adjusting structure 200 further includes: a light shielding layer 206; optionally, the conductive layer can be located between the light shielding layer 206 and the alignment liquid layer 207; wherein the conductive layer can prevent electrostatic interference and avoid external influence on the alignment of the liquid crystal layer 205. Optionally, the conductive layer can be a transparent conductive layer, and optionally, the material of the conductive layer can include indium tin oxide.

[0153] In a possible implementation, for the 3D display device shown in FIG. 1, the light adjusting structure 200 can be a structure including only one substrate (i.e., the first substrate 201), instead of two substrates arranged oppositely, and the liquid crystal layer 205 is directly attached to the display panel 100 through the attaching adhesive layer 300.

[0154] In a possible implementation, refer to FIGS. 8A-8H, wherein FIG. 8A is a perspective view of a partial structure of a 3D display device according to an embodiment of the present disclosure, FIG. 8B is a schematic view of a pixel layer in FIG. 8A, FIG. 8C is a schematic view of a first electrode of a light adjusting structure in FIG. 8A, FIG. 8D is a schematic view of a liquid crystal layer of the light adjusting structure in FIG. 8A, FIG. 8E is a top view of a partial structure of a 3D display device according to an embodiment of the present disclosure, FIG. 8F is a schematic view of a first electrode of a light adjusting structure in FIG. 8E, FIG. 8G is a schematic view of a liquid crystal layer of the light adjusting structure in FIG. 8E, and FIG. 8H is a top view of a partial structure of a 3D display device according to an embodiment of the present disclosure. The display panel 100 has a plurality of pixels P; the liquid crystal layer 205 has a plurality of liquid crystal repeating units Q, and optionally, the plurality of liquid crystal repeating units Q can be periodically arranged along a first direction X and a second direction Y; a projection of the liquid crystal repeating unit Q on the first substrate 201 completely overlaps a projection of the pixel P on the first substrate 201; the liquid crystal repeating unit Q includes at least two liquid crystal parts QE, the liquid crystal orientation directions of different liquid crystal parts QE are different, the liquid crystal orientation directions of the same liquid crystal part QE are the same, and the handedness directions of light emitted through different liquid crystal parts QE of the same liquid crystal repeating unit Q are different.

[0155] In an embodiment of the present disclosure, the liquid crystal layer 205 has a plurality of liquid crystal repeating units Q, and a projection of the liquid crystal repeating unit Q on the first substrate 201 completely overlaps a projection of the pixel P on the first substrate 201; the liquid crystal repeating unit Q includes at least two liquid crystal parts QE, the liquid crystal orientation directions of different liquid crystal parts QE are different, different liquid crystal orientations can emit light of different handedness, can make two adjacent rows of pixels respectively emit two kinds of polarized light of different handedness, realize 3D display, and at the same time, can make the area of each pixel P form a multi-domain display effect, and can improve the resolution of the 3D display device and the quality of 3D display.

[0156] In a possible implementation, as shown in FIGS. 8A-8H, the 3D display device provided by the embodiments of the present disclosure includes the light adjusting structure 200, which further includes: a plurality of first electrodes D1 and a second electrode D2; wherein the first electrode D1 is in the orthographic projection of the first substrate 201, and completely overlaps the orthographic projection of the pixel P on the first substrate 201; optionally, each sub-pixel can include a sub-pixel electrode, the first electrode D1 is in the orthographic projection of the first substrate 201, and completely overlaps the orthographic projection of the pixel P on the first substrate 201, which can be that the first electrode D1 is in the orthographic projection of the first substrate 201, and completely overlaps the orthographic projection of the plurality of sub-pixel electrodes in the pixel P on the first substrate 201, that is, one first electrode D1 corresponds to three sub-pixel electrodes, the first electrode D1 and the second electrode D2 in the embodiments of the present disclosure can be used to apply electricity to the liquid crystal layer to make the different liquid crystal parts QE of the liquid crystal repeating unit Q deflect, and after the liquid crystal part QE is deflected by electricity, solidification can be performed, and then in the subsequent use process of the 3D display device, the orientation of the different liquid crystal parts QE of the liquid crystal layer 205 can no longer change.

[0157] In a possible implementation, when the 3D display device includes the plurality of first electrodes D1 and the second electrode D2, the light adjusting structure 200 can further include a second substrate arranged opposite to the first substrate 201; the second substrate can be located between the first substrate and the display panel; the first electrode D1 and the second electrode D2 can be located between the first substrate and the second substrate. Optionally, the second substrate can be located between the first substrate and the display panel; optionally, the first electrode and the second electrode can both be located on the second substrate; optionally, the first electrode and the second electrode can both be located on the first substrate.

[0158] When the 3D display device includes the plurality of first electrodes D1 and the second electrode D2, the light adjusting structure 200 can also be only the first substrate 201.

[0159] In a possible implementation, the light adjusting structure 200 can further include other structures, for example, can further include a circuit layer for providing voltage for the first electrode D1, wherein the circuit layer can include a transistor and a signal line.

[0160] In a possible implementation, the first electrode D1 can be block-shaped, the plurality of first electrodes D1 can be arranged in an array on the first substrate 201, and the plurality of first electrodes D1 can be loaded with a pixel voltage when the liquid crystal layer 205 is subjected to orientation curing in the manufacturing process of the 3D display device; when the second electrode D2 is located in a different layer from the first electrode D1, the second electrode D2 can be a whole-surface planar electrode, and the second electrode D2 can be loaded with a common voltage when the liquid crystal layer 205 is subjected to orientation curing in the manufacturing process of the 3D display device; in another possible implementation, when the second electrode D2 is arranged in the same layer as the first electrode D1, the second electrode D2 can also be a non-planar structure, and optionally, an area in a whole layer except the first electrode D1 can be arranged as a pattern of the second electrode D2, and the second electrode D2 can be an integrally connected structure.

[0161] In a possible implementation, in the display panel in the embodiments of the present disclosure, the display panel can be a liquid crystal display panel, or an organic light-emitting display panel, or a display panel of another structural type. Optionally, when the display panel is a liquid crystal display panel, the display panel can have the same structure as a conventional liquid crystal display panel, for example, can specifically include: an array substrate and a counter substrate arranged oppositely, and a liquid crystal layer between the array substrate and the counter substrate; wherein the array substrate can include: a pixel circuit layer, a sub-pixel electrode, and a common electrode; wherein the pixel electrode layer can include a plurality of transistors; the counter substrate can include a color film layer; of course, the display panel can further include more structures, and the embodiments of the present disclosure are not limited in this way.

[0162] In a possible implementation, in combination with FIGS. 8A-8G, the display panel 100 has a plurality of pixel rows P100 extending along a first direction X and arranged along a second direction Y, and each pixel row P100 includes: a plurality of pixels P arranged along the first direction X in sequence; the liquid crystal layer 205 has a plurality of liquid crystal cell rows Q100 extending along the first direction X and arranged along the second direction Y, and a projection of the liquid crystal cell row Q100 on the first substrate 201 completely coincides with a projection of the pixel row P100 on the first substrate 201.

[0163] As shown in FIG. 8G, the liquid crystal unit row Q100 includes at least two sub-liquid crystal unit rows QE10 extending along the first direction X and arranged along the second direction Y. In the same liquid crystal unit row Q100, the liquid crystal orientation directions of the adjacent two sub-liquid crystal unit rows QE10 are different, and the liquid crystal orientation directions of the same sub-liquid crystal unit row QE10 are the same. In this way, the same liquid crystal unit row Q100 can correspond to the emission of two kinds of polarization light with different rotation directions. For example, as shown in FIG. 8E, the upper sub-liquid crystal unit row QE10 can emit right-handed circularly polarized light, and the lower sub-liquid crystal unit row QE10 can emit left-handed circularly polarized light. Since the liquid crystal unit rows Q100 are arranged repeatedly along the second direction Y, two kinds of polarization light with different rotation directions can be formed in the adjacent two liquid crystal unit rows Q100 in the entire display device, and 3D display can be realized. The viewer can realize the viewing of the 3D display device by using the circularly polarized light glasses.

[0164] In a possible implementation, when two sub-liquid crystal unit rows QE10 are arranged corresponding to each pixel row P100, the width of the protrusion D along the second direction Y can also be equal to the width of the pixel row P100 along the second direction Y. In another possible implementation, when two sub-liquid crystal unit rows QE10 are arranged corresponding to each pixel row P100, the width of the protrusion D along the second direction Y can also be equal to the width of the sub-liquid crystal unit row QE10 along the second direction Y. In another possible implementation, the width of the protrusion D along the second direction Y is less than the width of the sub-liquid crystal unit row QE10 along the second direction Y. In a possible implementation, the width of the sub-liquid crystal unit row QE10 along the second direction Y is an integer multiple of the width of the protrusion D along the second direction Y. In a possible implementation, the width of the protrusion D along the second direction Y is greater than the width of the sub-liquid crystal unit row QE10 along the second direction Y. In a possible implementation, the width of the protrusion D along the second direction Y is an integer multiple of the width of the sub-liquid crystal unit row QE10 along the second direction Y, for example, two times / four times / six times, and the like.

[0165] In a possible implementation, as shown in FIG. 8E, the rotation directions of the light emitted by the different liquid crystal parts QE in the same liquid crystal repeating unit Q are different. For example, as shown in FIG. 8E, the upper liquid crystal part QE can emit right-handed circularly polarized light, and the lower liquid crystal part QE can emit left-handed circularly polarized light.

[0166] In a possible implementation, the rotation direction of the light emitted by the different liquid crystal parts QE in the liquid crystal layer after curing in the test light adjusting structure 200 can be determined by testing the liquid crystal orientation of the liquid crystal part QE. For example, the azimuth angle +45° corresponds to left-handed circularly polarized light, and the azimuth angle -45° corresponds to right-handed circularly polarized light.

[0167] In specific implementation, the first electrode D1 and the second electrode D2 can be located in the same layer or different layers. The first electrode D1 can be a structure with slits or a planar structure. The following is a specific example. For example, in a possible implementation, the first electrode D1 and the second electrode D2 are located in the same layer and are located on the side of the first substrate 201 facing the liquid crystal layer 205. Referring to FIGS. 8A-8H, the first electrode D1 includes a first slit group S1 arranged along the second direction Y and a second slit group S2. The liquid crystal repeating unit Q includes a first liquid crystal part Q1 arranged along the second direction Y and a second liquid crystal part Q2. The first liquid crystal part Q1 is in the orthographic projection of the first substrate 201, and the orthographic projection of the first slit group S1 on the first substrate 201 coincides. The orthographic projection of the second liquid crystal part Q2 on the first substrate 201 coincides with the orthographic projection of the second slit group S2 on the first substrate 201. In the embodiment of the present disclosure, by arranging the liquid crystal repeating unit Q to include the first liquid crystal part Q1 arranged along the second direction Y and the second liquid crystal part Q2, a two-domain display effect can be formed at the position corresponding to each pixel P, thereby improving the resolution of the 3D display device and improving the quality of 3D display.

[0168] In a possible implementation, in combination with FIG. 8E, the extension direction of the slit S0 of the first slit group S1 is perpendicular to the liquid crystal orientation direction of the first liquid crystal part Q1. The extension direction of the slit S0 of the second slit group S2 is perpendicular to the liquid crystal orientation direction of the second liquid crystal part Q2. The liquid crystal long axis extension line e1 of the first liquid crystal part Q1 in the orthographic projection of the first substrate 201 forms an angle α1 with the first direction X, and the angle α1 ranges from 120° to 150°, for example, 135°. The liquid crystal long axis extension line e2 of the second liquid crystal part Q2 in the orthographic projection of the first substrate 201 forms an angle α2 with the first direction X, and the angle α2 ranges from -120° to -150°, for example, -135°. The second direction Y is perpendicular to the first direction X.

[0169] Through the light adjusting structure shown in FIG. 8E, the first liquid crystal part Q1 corresponding area emits clockwise right-handed circularly polarized light, and the second liquid crystal part Q2 emits counterclockwise left-handed circularly polarized light. In this way, two kinds of rotation direction polarized light can be formed in the adjacent two rows of liquid crystal unit rows Q 100, 3D display can be realized, and a two-domain display effect can be formed at the position corresponding to each pixel P, thereby improving the resolution of the 3D display device and improving the quality of 3D display.

[0170] In a possible implementation, the liquid crystal layer shown in FIG. 8E can be a positive liquid crystal, the extension direction of the slits S0 of the first slit group S1 forms an angle with the first direction X in a range of 30°-60°, for example, can be 45°, and the extension direction of the slits S0 of the second slit group S2 forms an angle with the first direction X in a range of -30°- -60°, for example, can be -45°. When power is applied to the liquid crystal layer orientation, the liquid crystal of the first liquid crystal part Q1 can be deflected to 135°, and the liquid crystal of the second liquid crystal part Q2 can be deflected to -135°, forming a two-domain effect.

[0171] In a possible implementation, in combination with FIG. 8H, the extension direction of the slits S0 of the first slit group S1 is the same as the orientation direction of the liquid crystal of the first liquid crystal part Q1, and the extension direction of the slits S0 of the second slit group S2 is the same as the orientation direction of the liquid crystal of the second liquid crystal part Q2. The normal projection of the long axis extension line e1 of the liquid crystal of the first liquid crystal part Q1 on the first substrate 201 forms an angle with the first direction X in a range of 30°-60°, for example, can be 45°, and the normal projection of the long axis extension line e2 of the liquid crystal of the second liquid crystal part Q2 on the first substrate 201 forms an angle with the first direction X in a range of -30°- -60°, for example, can be -45°. The second direction Y is perpendicular to the first direction X.

[0172] In a possible implementation, the liquid crystal layer shown in FIG. 8H can be a negative liquid crystal, the extension direction of the slits S0 of the first slit group S1 forms an angle with the first direction X in a range of 30°-60°, for example, can be 45°, and the extension direction of the slits S0 of the second slit group S2 forms an angle with the first direction X in a range of -30°- -60°, for example, can be -45°. When power is applied to the liquid crystal layer orientation, the liquid crystal of the first liquid crystal part Q1 can be deflected to 45°, and the liquid crystal of the second liquid crystal part Q2 can be deflected to -45°, forming a two-domain effect.

[0173] In a possible implementation, referring to FIG. 1, the light adjusting structure 200 further includes a light shielding layer 206, the light shielding layer 206 includes a first light shielding part BM1 extending along the first direction X and arranged along the second direction Y. The normal projection of the first light shielding part BM1 on the first substrate 201 at least partially overlaps with the normal projection of the gap J0 between the adjacent pixel rows P100 on the first substrate 201. In the embodiment of the present disclosure, the gap J0 between the adjacent pixel rows P100 is provided with the first light shielding part BM1, which can prevent crosstalk and increase the viewing angle.

[0174] In a possible implementation, referring to FIG. 9, the first light shielding part BM1 is an integral connection structure.

[0175] In combination with FIG. 15, in the manufacturing process of the 3D display device, when the light adjusting structure is attached to the display panel, the light adjusting structure and the display panel can have an attachment deviation, which further causes the black matrix (e.g., the solid black lines in FIG. 15) of the display panel and the black matrix layer (e.g., the secondary black lines in FIG. 15) of the light adjusting structure to have a corresponding deviation, so that the overall black matrix occupies a larger area in some regions, causing the brightness of the regions to be darker, and the overall black matrix occupies a smaller area in some regions, causing the brightness of the regions to be brighter, thereby forming the moire patterns with alternating bright and dark regions.

[0176] Therefore, in a possible implementation, referring to FIGS. 10A-10D and 11, the first light shielding portion BZ1 includes a plurality of first sub-light shielding portions BZ10 arranged in the first direction X in sequence, and gaps are arranged between adjacent first sub-light shielding portions BZ10.

[0177] It can be understood that the liquid crystal layer 205 of the light adjusting structure 200 needs to use a photo-alignment technology, and a target needs to be tracked for positioning in the alignment process to ensure the alignment accuracy. By using the first light shielding portion BZ1 including a plurality of first sub-light shielding portions BZ10 arranged independently and at intervals, that is, using the dot-shaped first sub-light shielding portion BZ10 as the tracking target, the alignment accuracy can be ensured. Moreover, by using the first light shielding portion BZ1 including a plurality of first sub-light shielding portions BZ10 arranged independently and at intervals, when the light adjusting structure 200 and the display panel 100 have an attachment deviation, the overlapping area of the light shielding layer of the light adjusting structure 200 and the light shielding layer of the display panel can be reduced, thereby improving the moire phenomenon of the 3D display device. That is, the embodiments of the present disclosure can improve the moire phenomenon of the 3D display device while ensuring the alignment accuracy.

[0178] In a possible implementation, referring to FIG. 10C, in the same first light shielding part BZ1, the spacing a2 between the centers of adjacent first sub-light shielding parts BZ10 in the first direction X is greater than 0 and less than or equal to 340 mm; in the two adjacent first light shielding parts BZ, the spacing a3 between the centers of the two adjacent first sub-light shielding parts BZ10 in the second direction Y is greater than 0 and less than or equal to 205 mm. In the alignment exposure process of the light adjusting structure 200, the tracking lens requires that the point-like first sub-light shielding part BZ10 repeatedly appears within 340 mm in the horizontal direction and 205 mm in the vertical direction, so as to avoid the exposure alignment deviation, which affects the display quality. In the embodiment of the present disclosure, by setting the spacing a2 between the centers of the adjacent first sub-light shielding parts BZ10 in the same first light shielding part BZ1 to be greater than 0 and less than or equal to 340 mm in the first direction X, and the spacing a3 between the centers of the two adjacent first sub-light shielding parts BZ10 in the two adjacent first light shielding parts BZ to be greater than 0 and less than or equal to 205 mm in the second direction Y, the exposure alignment deviation can be avoided, and the overlapping area of the light shielding layer of the light adjusting structure 200 and the light shielding layer of the display panel can be reduced, the moire risk can be reduced, and the 3D viewing experience can be ensured.

[0179] In a possible implementation, referring to FIGS. 10C and 10D, FIG. 10D can be an enlarged schematic view of the dashed circle in FIG. 10C. When the light shielding layer of the light adjusting structure 200 is set to a point-like structure, the width b1 of the first sub-light shielding part BZ10 in the second direction Y can range from 8 to 3% μm, the width b2 of the first sub-light shielding part BZ10 in the first direction Y can range from 108 to 3% μm, and the width b3 of the first light shielding strip BM1 in the second direction Y can range from 50 μm to 120 μm.

[0180] When the first light shielding part BZ1 of the light adjusting structure 200 is set to have a plurality of first sub-light shielding parts BZ10 that are independent and spaced apart from each other, referring to FIG. 10C, the display panel includes a second light shielding layer, and the second light shielding layer includes a plurality of first light shielding strips BM1 extending in the first direction X and arranged in the second direction Y, and a plurality of second light shielding strips BM2 extending in the second direction Y and arranged in the first direction X. The first light shielding strip BM1 covers the first light shielding part BZ1 in the orthographic projection of the first substrate 201. The first light shielding strip BM1 in the orthographic projection of the first substrate 201 coincides with the gap between adjacent pixel rows P100 in the orthographic projection of the first substrate 201. The second light shielding strip BM2 in the orthographic projection of the first substrate 201 coincides with the gap between adjacent pixel columns in the orthographic projection of the first substrate 201.

[0181] In a possible implementation, referring to FIGS. 10A-10D, the first light-blocking layer includes a plurality of first sub-light-blocking portions BZ10 arranged in an array. That is, the first sub-light-blocking portions BZ10 are arranged in multiple rows and multiple columns, and adjacent two first light-blocking portions BZ1 include two first sub-light-blocking portions BZ10 that are located in the same column.

[0182] In a possible implementation, referring to FIG. 11, the first light-blocking layer includes first sub-light-blocking portions BZ10 arranged in an array, and adjacent two first light-blocking portions BZ1 include two first sub-light-blocking portions BZ10 that are not located in the same column.

[0183] In a possible implementation, referring to FIG. 10C, in adjacent two first light-blocking portions BZ1, the distance a1 between the centers of two first sub-light-blocking portions BZ10 in the second direction Y is greater than zero and less than or equal to 140 mm. In the embodiment of the present disclosure, in adjacent two first light-blocking portions BZ1, the distance a1 between the centers of two first sub-light-blocking portions BZ10 in the second direction Y is greater than zero and less than or equal to 140 mm, which can meet the requirement of alignment exposure and avoid the situation that two positioning point-shaped first sub-light-blocking portions BZ10 cannot be tracked by one capturing lens.

[0184] In a possible implementation, referring to FIG. 10B, the first light-blocking layer includes a plurality of first sub-light-blocking portions BZ10 arranged in an array, and adjacent two first light-blocking portions BZ1 have a plurality of pixel rows P100 in the orthographic projection on the first substrate 201.

[0185] In a possible implementation, the display panel 100 can also be configured without the light-blocking layer (black matrix layer), and only the light adjustment structure 100 is configured with the light-blocking layer, so as to reduce the overlapping area of the light-blocking layer of the light adjustment structure 200 and the light-blocking layer of the display panel. For example, referring to FIGS. 12A-12B and FIG. 13, the display panel includes a plurality of pixel columns extending along the second direction Y and arranged along the first direction X; the light adjustment structure 200 includes a first light-blocking layer; the first light-blocking layer includes a plurality of third light-blocking strips BM3 extending along the first direction X and arranged along the second direction Y, and a plurality of fourth light-blocking strips BM4 extending along the second direction and arranged along the first direction; the orthographic projection of the third light-blocking strips BM3 on the first substrate 201 coincides with the gap between adjacent pixel rows in the orthographic projection on the first substrate 201; and the orthographic projection of the fourth light-blocking strips BM4 on the first substrate 201 coincides with the gap between adjacent pixel columns in the orthographic projection on the first substrate 201. In the embodiment of the present disclosure, by configuring only the light adjustment structure 100 with the black matrix layer and not configuring the display panel 200 with the black matrix layer, the overlapping area of the light-blocking layer of the light adjustment structure 200 and the light-blocking layer of the display panel can be reduced, so as to improve the moiré phenomenon of the 3D display device.

[0186] In a possible implementation, when the light adjusting structure 200 has the first electrode D1 shown in FIG. 8A, the light adjusting structure 200 can only be provided with the fourth light shielding strip BM4 at a position corresponding to a pixel column, and no light shielding structure can be provided at a position of a sub-pixel column, in combination with FIG. 12A.

[0187] In another possible implementation, the pixel includes a plurality of sub-pixels, in combination with FIG. 13, the first light shielding layer further includes: a plurality of fifth light shielding strips BM5 extending along the second direction Y and arranged along the first direction X; a projection of the fifth light shielding strip BM5 on the first substrate 201 coincides with a projection of a gap between adjacent sub-pixel columns on the first substrate 201.

[0188] Because there are too many metal traces (for example, gate lines and data lines) in the display panel 100, the metal leaks light more when the display panel 100 is lighted, and at the same time, the metal reflects seriously due to the reflection of ambient light. If the light adjusting structure 200 has insufficient shading effect or has a fitting deviation, it is easy to cause display abnormalities. Therefore, in order to avoid such light leakage and reflection bias, a block / island-shaped black matrix can be designed in the display panel 100 to reduce the light leakage and reflection bias of the display panel 100 itself. At the same time, the existence of the block / island-shaped black matrix pattern also makes it difficult to interfere with the black matrix pattern of the light adjusting structure 200, resulting in the occurrence of moire. That is, in a possible implementation, the light adjusting structure 100 can be provided with a light shielding layer, and the display panel 100 can be provided with a point-shaped black matrix to reduce the overlapping area of the light shielding layer of the light adjusting structure 200 and the light shielding layer of the display panel. For example, in combination with FIGS. 14A-14B, the display panel includes: a second light shielding layer; the second light shielding layer includes: a plurality of second light shielding portions BZ2 extending along the first direction X and arranged along the second direction Y; a projection of the second light shielding portion BZ2 on the first substrate 201 is located in a gap between adjacent two pixel rows in a projection of the first substrate; the second light shielding portion BZ2 includes: a plurality of second sub-light shielding portions BZ20 arranged along the first direction Y in sequence, and a gap between adjacent second sub-light shielding portions BZ2. In the embodiment of the present disclosure, by providing the light adjusting structure 100 with a light shielding layer and the display panel 100 with a point-shaped black matrix, the overlapping area of the light shielding layer of the light adjusting structure 200 and the light shielding layer of the display panel can be reduced, and the moire phenomenon of the 3D display device can be improved.

[0189] In a possible implementation, as shown in FIG. 14A and FIG. 14C, where FIG. 14C is a schematic view corresponding to FIG. 14A at the dashed circle, the display panel includes: a plurality of transistors T; and the second sub-shading part BZ20 covers the projection of the transistors T on the first substrate 201. That is, the second sub-shading part BZ20 can be arranged at the position of the transistors T on the display panel, which can improve the moire phenomenon of the 3D display device, and can prevent the reflection of the metal pattern of the transistors T and / or the influence of external light on the transistors.

[0190] Optionally, the transistor T can include a gate, an active pattern, a source and a drain; the second sub-shading part BZ20 covers the projection of at least one of the gate, the source and the drain of the transistor T on the first substrate 201, and / or covers the projection of the active pattern of the transistor T on the first substrate 201.

[0191] In a possible implementation, the drain of the transistor T can be connected to the sub-pixel electrode through a via, and the second sub-shading part BZ20 can also cover the projection of the via on the first substrate 201.

[0192] In a possible implementation, as shown in FIG. 1, the light adjusting structure 200 further includes: an alignment liquid layer 207 between the first substrate 201 and the liquid crystal layer 205.

[0193] In a possible implementation, when the light adjusting structure 200 is assembled with the display panel 100, the pattern of the light shielding layer (including the first light shielding layer and / or the second light shielding layer) of the light adjusting structure 200 and the display panel 100 can be reused as alignment marks; in another possible implementation, special alignment marks can also be arranged on the light adjusting structure 200 and the display panel 100 respectively for alignment, which can not reuse the light shielding layer. For example, in a possible implementation, referring to FIGS. 16A-16C, FIG. 16A is a schematic diagram of alignment marks of a display panel, FIG. 16B is a schematic diagram of alignment marks of the light adjusting structure 200, and FIG. 16C is a schematic diagram of the display panel and the light adjusting structure after alignment. The light adjusting structure 200 needs to be finally assembled with the display panel 100 to realize 3D display, and the assembly is marked and positioned by using the alignment marks. The alignment marks can include a first alignment mark M1, a second alignment mark M2, a third alignment mark M3, a fourth alignment mark M4, a fifth alignment mark m1, a sixth alignment mark m2, and a seventh alignment mark m3. The first alignment mark M1, the second alignment mark M2, the third alignment mark M3, and the fourth alignment mark M4 can be located on the display panel 100. The fifth alignment mark m1, the sixth alignment mark m2, and the seventh alignment mark m3 can be located on the light adjusting structure 200. The first alignment mark M1 can be aligned with the fifth alignment mark m1 to form an alignment structure at a third position W3. The second alignment mark M2 can be aligned with the sixth alignment mark m2 to form an alignment structure at a second position W2. The third alignment mark M3 can be aligned with the seventh alignment mark m3 to form an alignment structure at a first position W1. The fourth alignment mark M4 forms an alignment structure at a fourth position W4. The first alignment mark M1, the second alignment mark M2, the third alignment mark M3, and the fourth alignment mark M4 can be hollow cross structures, and the fifth alignment mark m1, the sixth alignment mark m2, and the seventh alignment mark m3 can be solid cross structures.

[0194] In a possible implementation, referring to FIGS. 17A-17C, in the third position W3 in FIG. 16C, as shown in FIG. 17A, the display panel 100 can also be provided with a solid cross alignment mark and a hollow cross alignment mark. As shown in FIG. 17B, the light adjusting structure 200 can also be provided with a solid cross alignment mark and a hollow cross alignment mark. As shown in FIG. 17C, the display panel 100 in FIG. 17A and the light adjusting structure 200 in FIG. 17B are aligned.

[0195] Based on the same inventive concept, the disclosure also provides a manufacturing method of the 3D display device provided in the embodiments of the disclosure. Referring to FIG. 18, the manufacturing method includes the following steps.

[0196] Step S100, forming a light adjusting structure with a first compensation layer and a second compensation layer;

[0197] Step S200, attaching the light adjusting structure to the light-out side of the display panel;

[0198] In the step S100 of forming the light adjusting structure with the first compensation layer and the second compensation layer, the following steps are included:

[0199] Step S101, forming the first compensation layer with a plurality of protrusions on one side of the first substrate;

[0200] Step S102, forming the second compensation layer on the side of the first compensation layer away from the first substrate.

[0201] In one possible implementation, before the step S101 of forming the first compensation layer with a plurality of protrusions on one side of the first substrate, the step S100 of forming the light adjusting structure with the first compensation layer and the second compensation layer further includes:

[0202] Step S103, sequentially forming the first black matrix and the liquid crystal layer on the other side of the first substrate. In the embodiment of the present disclosure, the first black matrix and the liquid crystal layer can be sequentially formed on the other side of the first substrate first, then the first compensation layer, the second compensation layer and the protective layer are formed, and finally the light adjusting structure is attached to the display panel.

[0203] In one possible implementation, as shown in FIG. 19, in order to form the protrusions D of the first compensation layer 202, a mask plate (Mask) can be used to grow the first compensation layer 202 with low refractive index on the surface of the first substrate 201, and then the protrusions are formed by photoetching, and then the second compensation layer 203 with high refractive index is continuously grown, so as to finally form a certain inclination angle at the junction of the high and low refractive index layers, thereby compensating the viewing angle.

[0204] In one possible implementation, as shown in FIG. 20, in order to save cost, the mask plate corresponding to the spacer PS corresponding to the size of the protrusion D can be selected, and then the first compensation layer 202 with a plurality of protrusions D is formed by using the repeated exposure method.

[0205] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all changes and modifications falling within the scope of the present application.

[0206] It will be apparent to those skilled in the art that various modifications and variations can be made to the present embodiments without departing from the spirit or scope of the present embodiments. Thus, it is intended that the present embodiments cover the modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

Claims

1. A 3D display device, wherein, include: The display panel has multiple rows of pixels that extend along a first direction and are arranged sequentially along a second direction; A light-adjusting structure is located on the light-emitting side of the display panel; The light-adjusting structure includes: a first substrate, a liquid crystal layer located on the side of the first substrate facing the display panel, an adhesive layer located on the side of the liquid crystal layer facing the display panel, a first compensation layer located on the side of the first substrate away from the display panel, and a second compensation layer located on the side of the first compensation layer away from the first substrate; the light-adjusting structure is bonded to the display panel through the adhesive layer; the refractive index of the first compensation layer is lower than that of the second compensation layer, and the side of the first compensation layer facing the second compensation layer has a plurality of protrusions, at least a portion of the protrusions in the orthographic projection of the first substrate overlaps with the orthographic projection of the pixel row on the first substrate.

2. The 3D display device as claimed in claim 1, wherein, In the direction of extension perpendicular to the pixel row, the protrusion includes: a first inclined surface; The first inclined surface, in its orthographic projection onto the first substrate, lies within the orthographic projection of the pixel row onto the first substrate.

3. The 3D display device as described in claim 1 or 2, wherein, In the extension direction perpendicular to the pixel row, the protrusion includes: an end face connected to the first inclined surface and located away from the first substrate; The projection of the end face onto the first substrate and the gap between adjacent pixel rows onto the first substrate have an overlapping area.

4. The 3D display device as claimed in claim 2 or 3, wherein, The first compensation layer includes: a first surface located between two adjacent protrusions; The angle between the first inclined surface and the outer surface of the first surface at the protrusion position ranges from 0° to 90°.

5. The 3D display device according to any one of claims 1-4, wherein, The width of the protrusion along the second direction is equal to the width of the pixel row along the second direction.

6. The 3D display device according to any one of claims 1-4, wherein, The width of the pixel row in the second direction is an integer multiple of the width of the protrusion along the second direction.

7. The 3D display device according to any one of claims 1-6, wherein, The protrusion is strip-shaped; multiple protrusions extend along the first direction and are arranged sequentially along the second direction.

8. The 3D display device according to any one of claims 1-6, wherein, The first compensation layer includes: a plurality of protrusions extending along the first direction and arranged along the second direction; the protrusion group includes: a plurality of protrusions arranged sequentially along the first direction.

9. The 3D display device as claimed in claim 8, wherein, In the same group of protrusions, the protrusions are arranged at equal intervals.

10. The 3D display device as claimed in claim 8, wherein, The protrusion group includes: a plurality of sub-protrusion groups arranged sequentially along the first direction; the sub-protrusion group includes: at least two protrusions arranged along the first direction; Two adjacent protrusions in the same sub-protrusion group have a first spacing in the first direction; two adjacent sub-protrusion groups have a second spacing in the first direction; the first spacing is smaller than the second spacing.

11. The 3D display device as claimed in claim 10, wherein, The first spacing between any two of the sub-protrusions is equal; in the first direction, the second spacing between any two adjacent sub-protrusion groups is equal.

12. The 3D display device according to any one of claims 1-11, wherein, The cross-sectional shape of the protrusion perpendicular to the extension direction of the pixel row includes: trapezoidal, triangular, semi-circular, or semi-elliptical.

13. The 3D display device according to any one of claims 1-12, wherein, The refractive index difference between the first compensation layer and the second compensation layer ranges from 0.1 to 0.

9.

14. The 3D display device according to any one of claims 1-13, wherein, The light modulation structure further includes a protective layer located on the side of the second compensation layer away from the first compensation layer; The refractive index difference between the protective layer and the second compensation layer is less than the refractive index difference between the second compensation layer and the first compensation layer.

15. The 3D display device as claimed in claim 14, wherein, The refractive index of the protective layer is equal to that of the second compensation layer.

16. The 3D display device as claimed in claim 14 or 15, wherein, The protective layer also has multiple particles on the side opposite to the second compensation layer.

17. The 3D display device according to any one of claims 1-16, wherein, The plurality of pixel rows include a first pixel row and a second pixel row that are alternately arranged along the second direction; The liquid crystal layer includes: a plurality of first liquid crystal rows extending along the first direction and alternately arranged along the second direction, and a second liquid crystal row; the orthographic projection of the first liquid crystal row on the first substrate overlaps with the orthographic projection of the first pixel row on the first substrate; the orthographic projection of the second liquid crystal row on the first substrate overlaps with the orthographic projection of the second pixel row on the first substrate. The light emitted through the first liquid crystal row has the same rotation direction, the light emitted through the second liquid crystal row has the same rotation direction, and the light emitted through the first liquid crystal row and the second liquid crystal row have different rotation directions.

18. The 3D display device according to any one of claims 1-16, wherein, The display panel has multiple pixels; The liquid crystal layer has multiple liquid crystal repeating units, and the orthographic projection of the liquid crystal repeating unit onto the first substrate coincides with the orthographic projection of the pixel onto the first substrate. The liquid crystal repeating unit includes at least two liquid crystal portions, the liquid crystal orientation directions of different liquid crystal portions are different, and the liquid crystal orientation directions of the same liquid crystal portion are the same. The rotation directions of light emitted from different liquid crystal portions of the same liquid crystal repeating unit are different.

19. The 3D display device as claimed in claim 18, wherein, The pixel row includes: a plurality of pixels arranged sequentially along the first direction; The liquid crystal layer has a plurality of rows of liquid crystal cells extending along the first direction and arranged along the second direction, and the orthographic projection of the rows of liquid crystal cells onto the first substrate coincides with the orthographic projection of the rows of pixels onto the first substrate. The liquid crystal cell row includes at least two sub-liquid crystal cell rows extending along the first direction and arranged along the second direction; in the same liquid crystal cell row, the liquid crystal orientation directions of two adjacent sub-liquid crystal cell rows are different, and the liquid crystal orientation directions of the same sub-liquid crystal cell row are the same.

20. The 3D display device as claimed in claim 18 or 19, wherein, The light-adjusting structure further includes: a plurality of first electrodes and a second electrode; the orthographic projection of the first electrode onto the first substrate coincides with the orthographic projection of the pixel onto the first substrate.

21. The 3D display device according to any one of claims 17-20, wherein, The light-adjusting structure further includes: a first light-shielding layer; the first light-shielding layer includes: a first light-shielding portion extending along the first direction and arranged along the second direction; The first light-shielding portion in the orthographic projection of the first substrate at least partially overlaps with the gap between adjacent pixel rows in the orthographic projection of the first substrate.

22. The 3D display device as claimed in claim 21, wherein, The first light-shielding part is an integrally connected structure.

23. The 3D display device as claimed in claim 21, wherein, The first light-shielding part includes: a plurality of first sub-light-shielding parts arranged sequentially along the first direction, with gaps between adjacent first sub-light-shielding parts.

24. The 3D display device according to any one of claims 21-23, wherein, The display panel has a plurality of pixel columns extending along the second direction and arranged along the first direction; The display panel includes: a second light-shielding layer; the second light-shielding layer includes: a plurality of first light-shielding strips extending along the first direction and arranged along the second direction, and a plurality of second light-shielding strips extending along the second direction and arranged along the first direction; the orthographic projection of the first light-shielding strips on the first substrate coincides with the orthographic projection of the gap between adjacent pixel rows on the first substrate; the orthographic projection of the second light-shielding strips on the first substrate coincides with the orthographic projection of the gap between adjacent pixel columns on the first substrate; The first light-shielding strip's orthogonal projection onto the first substrate covers the first light-shielding portion's orthogonal projection onto the first substrate.

25. The 3D display device according to any one of claims 17-20, wherein, The display panel has a plurality of pixel columns extending along the second direction and arranged along the first direction; The light adjustment structure further includes: a first light-shielding layer; the first light-shielding layer includes: a plurality of third light-shielding strips extending along the first direction and arranged along the second direction, and a plurality of fourth light-shielding strips extending along the second direction and arranged along the first direction. The orthographic projection of the third light-shielding strip onto the first substrate coincides with the orthographic projection of the gap between adjacent pixel rows onto the first substrate; the orthographic projection of the fourth light-shielding strip onto the first substrate coincides with the orthographic projection of the gap between adjacent pixel columns onto the first substrate.

26. The 3D display device as claimed in claim 25, wherein, Of the light adjustment structure and the display panel, only the light adjustment structure has a first light-shielding layer.

27. The 3D display device as claimed in claim 25, wherein, The display panel includes: a second light-shielding layer; the second light-shielding layer includes: a plurality of second light-shielding portions extending along a first direction and arranged along a second direction; the second light-shielding portions are located in the orthographic projection of the first substrate, and the gap between two adjacent pixel rows is within the orthographic projection of the first substrate. The second light-shielding part includes: a plurality of second sub-light-shielding parts arranged sequentially along the first direction, with gaps between adjacent second sub-light-shielding parts.

28. The 3D display device as claimed in claim 27, wherein, The display panel includes: a plurality of transistors; the second sub-shielding portion, in its orthogonal projection onto the first substrate, covers the orthogonal projection of the transistors onto the first substrate.

29. A method for manufacturing a 3D display device as described in any one of claims 1-28, wherein, The manufacturing method includes: A light modulation structure with a first compensation layer and a second compensation layer is formed; The light adjustment structure is attached to the light-emitting side of the display panel; The formation of the light-modulating structure having a first compensation layer and a second compensation layer includes: A first compensation layer with multiple protrusions is formed on one side of the first substrate; A second compensation layer is located on the side of the first compensation layer away from the first substrate.

30. The manufacturing method as described in claim 29, wherein, Before forming a first compensation layer with multiple protrusions on one side of the first substrate, the light-adjusting structure having the first compensation layer and the second compensation layer further includes: A first black matrix and a liquid crystal layer are sequentially formed on the other side of the first substrate.

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