Stereoscopic display substrate and display device

Abstract

A display substrate and a display device are provided. The display substrate comprises: a substrate substrate; a display unit arranged on one side of the substrate substrate, the display unit comprising a plurality of pixel units, the plurality of pixel units being arranged in an array structure in a first direction and a second direction, the plurality of pixel units having a periodic pixel width Δx in the first direction; a first dielectric layer arranged on a side of the display unit away from the substrate substrate; a column lens grating unit arranged on a side of the first dielectric layer away from the substrate substrate, the column lens grating unit comprising a hard base and a plurality of column lenses arranged continuously along the first direction, each column lens having a width P; the stereoscopic display substrate having a preset field of view position of optimal display effect in a third direction, the third direction being perpendicular to the first direction and the second direction; in the first direction, the width P of each column lens increases from a field of view origin towards a direction away from the field of view origin.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically, to a stereoscopic display substrate and a display device. Background Technology

[0002] Stereoscopic displays, as an important component of the display field, are a key research area for various research institutions and display technology companies, with broad application markets in medical imaging, education, and virtual reality. However, stereoscopic displays suffer from issues such as crosstalk and ghosting in image quality, significantly hindering the large-scale application of stereoscopic products. Summary of the Invention

[0003] To address at least one of the aforementioned problems, embodiments of this disclosure provide a stereoscopic display substrate and a display device that can at least reduce or eliminate crosstalk issues in stereoscopic display devices, thereby improving the display effect of the display device.

[0004] In one aspect, a stereoscopic display substrate is provided, comprising:

[0005] Substrate;

[0006] A display unit is disposed on one side of the substrate. The display unit includes a plurality of pixel units. The plurality of pixel units are arranged in an array structure in a first direction and a second direction. The plurality of pixel units have a periodic pixel width Δx in the first direction. The first direction and the second direction intersect.

[0007] A first dielectric layer is disposed on the side of the display unit away from the substrate.

[0008] A cylindrical lens grating unit is disposed on the side of the first dielectric layer away from the substrate. The cylindrical lens grating unit includes a rigid substrate and a plurality of cylindrical lenses continuously disposed along a first direction, each cylindrical lens having a width of P.

[0009] The stereoscopic display substrate has a preset field of view position with the best display effect in a third direction, and the third direction is perpendicular to the first direction and the second direction.

[0010] In the first direction, the width P of the cylindrical lens increases from the origin of the field of view toward a direction away from the origin of the field of view. The origin of the field of view is the point where the third direction intersects with the first direction and the second direction. The distance E between the preset field of view position and the origin of the field of view in the third direction is... z ;

[0011] The width P of each cylindrical lens is determined based on at least one of the preset number of cylindrical lenses m and the periodic pixel width Δx, as well as the refractive pixel spacing y. kThe calculated refractive pixel spacing y k To account for the distance between the pixel unit corresponding to the k-th cylindrical lens and the origin of the field of view, where k is an integer greater than 0,

[0012] The refractive pixel spacing y k The original pixel spacing y of the cylindrical lens o The difference is less than or equal to the crosstalk limit M, which is associated with the width of the pixel unit in the first direction, and the original pixel spacing y o The distance between the pixel unit corresponding to the k-th cylindrical lens and the origin of the field of view, without considering refraction.

[0013] In some exemplary embodiments of this disclosure, the width P and the refractive pixel spacing y k and the original pixel spacing y o Satisfy the following formula:

[0014]

[0015] y o (k)=k×Δx (2)

[0016] y k (k)-y o (k)≤M (3)

[0017] Where h is the equivalent air gap between the cylindrical lens and the display unit, n is the ratio of the refractive index n2 of the cylindrical lens to the refractive index n1 of the first dielectric layer, and θ2 is the angle between the light ray and the normal in the cylindrical lens.

[0018] In some exemplary embodiments of this disclosure, in the first direction, the width P of the cylindrical lens increases linearly from the origin of the field of view toward a direction away from the origin of the field of view;

[0019] Wherein, the width P of the k-th cylindrical lens is based on the periodic pixel width Δx and the refractive pixel spacing y of the k-th cylindrical lens. k The width P0 of the cylindrical lens at the origin of the field of view is calculated.

[0020] In some exemplary embodiments of this disclosure, the width P of the k-th cylindrical lens satisfies the following linear relationship:

[0021]

[0022] y k -y k-1 =Δx (5)

[0023]

[0024] Where α is the correction coefficient, P min =P0, P max It is based on the refractive pixel spacing y of the k-th cylindrical lens. k The width P0 of the cylindrical lens at the origin of the field of view is calculated.

[0025] In some exemplary embodiments of this disclosure, the value of α ranges from 2.2 to 2.6.

[0026] In some exemplary embodiments of this disclosure, in the first direction, the width P of the cylindrical lens increases non-linearly from the origin of the field of view toward a direction away from the origin of the field of view;

[0027] Wherein, the width P of the k-th cylindrical lens is based on the periodic pixel width Δx and the refractive pixel spacing y of the k-th cylindrical lens. k The width P0 of the cylindrical lens at the origin of the field of view is calculated.

[0028] In some exemplary embodiments of this disclosure, the width P of the k-th cylindrical lens satisfies the following relationship:

[0029]

[0030] y k -y k-1 =Δx (8)

[0031]

[0032] Where k > 0.

[0033] In some exemplary embodiments of this disclosure, the refractive pixel spacing y of the k-th cylindrical lens k The original pixel spacing y of the k-th cylindrical lens o The absolute value of the difference approaches 0.

[0034] In some exemplary embodiments of this disclosure, in the first direction, the width P of the cylindrical lens increases in segments from the origin of the field of view toward a direction away from the origin of the field of view;

[0035] Wherein, the width P of the k-th cylindrical lens k It is based on the preset number of cylindrical lenses m and the refractive pixel spacing y k The original pixel spacing y o And the crosstalk limit M is calculated.

[0036] In some exemplary embodiments of this disclosure, in the first direction, the cylindrical lens includes a first cylindrical lens located in a first region and a second cylindrical lens located in a second region. The width of the first cylindrical lens in the first region is a first width P1, and the width of the second cylindrical lens in the second region is a second width P2.

[0037] The first width P1 is less than the second width P2 of the second cylindrical lens.

[0038] In some exemplary embodiments of this disclosure, the first width P1 of the first cylindrical lens satisfies the following relationship:

[0039]

[0040] y o (m)=m×Δx (11)

[0041] y k (m)-y o (m)≤M (12)

[0042]

[0043] Where m is the known number of pre-set cylindrical lenses.

[0044] In some exemplary embodiments of this disclosure, the number of cylindrical lenses extending from the origin of the field of view toward the edge of the first region in the first direction is k. max The second width P2 of the second cylindrical lens in the second region satisfies the following relationship:

[0045]

[0046] P2 is calculated based on formula (14) and formula (1).

[0047] In some exemplary embodiments of this disclosure, the rigid substrate is disposed on the side close to the substrate.

[0048] The cylindrical lens has a convex curved surface facing away from the substrate.

[0049] In some exemplary embodiments of this disclosure, the rigid substrate is disposed on the side away from the substrate.

[0050] The cylindrical lens has a convex curved surface facing towards the side closer to the substrate.

[0051] Some exemplary embodiments of this disclosure also include:

[0052] The second dielectric layer is disposed on the side of the cylindrical lens grating unit away from the substrate.

[0053] An encapsulation layer is disposed on the side of the second dielectric layer away from the substrate.

[0054] In some exemplary embodiments of this disclosure, the materials used to manufacture the cylindrical lens include plexiglass, rigid polycarbonate, or flexible PET.

[0055] In some exemplary embodiments of this disclosure, the cylindrical lens grating unit is manufactured according to the following method:

[0056] Coating a cylindrical lens forming material into a cylindrical lens mold;

[0057] The rigid substrate is disposed on the side of the cylindrical lens forming material away from the mold;

[0058] Pressure is applied to the rigid substrate to completely fill the cylindrical lens mold with the cylindrical lens forming material;

[0059] The cylindrical lens forming material that completely fills the cylindrical lens mold is cured, demolded, cut, and cleaned to form the cylindrical lens grating unit.

[0060] In another aspect of this disclosure, a stereoscopic display substrate is provided, comprising:

[0061] Substrate;

[0062] A display unit is disposed on one side of the substrate. The display unit includes a plurality of pixel units. The plurality of pixel units are arranged in an array structure in a first direction and a second direction. The plurality of pixel units have a periodic pixel width Δx in the first direction. The first direction and the second direction intersect.

[0063] A first dielectric layer is disposed on the side of the display unit away from the substrate.

[0064] A cylindrical lens grating unit is disposed on the side of the first dielectric layer away from the substrate. The cylindrical lens grating unit includes a rigid substrate and a plurality of cylindrical lenses continuously disposed along a first direction, each cylindrical lens having a width of P.

[0065] The stereoscopic display substrate has a preset field of view position with the best display effect in a third direction, and the third direction is perpendicular to the first direction and the second direction.

[0066] In the first direction, the width P of the cylindrical lenses is equal, and the distance E between the preset field of view position and the origin of the field of view in the third direction is... z ;

[0067] The width P of each cylindrical lens is determined based on the preset number m of the plurality of cylindrical lenses and the refractive pixel spacing y. k The original pixel spacing y o The crosstalk limit M and the refractive pixel spacing y are calculated as well. k Calculated

[0068] The refractive pixel spacing y k To account for the distance between the pixel unit corresponding to the k-th cylindrical lens and the origin of the field of view, where k is an integer greater than 0,

[0069] The refractive pixel spacing y k The original pixel spacing y of the cylindrical lens o The difference is less than or equal to the crosstalk limit M, which is associated with the width of the pixel unit in the first direction, and the original pixel spacing y o The distance between the pixel unit corresponding to the k-th cylindrical lens and the origin of the field of view, without considering refraction.

[0070] Another aspect of this disclosure provides a display device, including a display substrate as described above. Attached Figure Description

[0071] Other objects and advantages of this disclosure will become apparent from the following description of the disclosure with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the disclosure.

[0072] Figure 1A The schematic diagram illustrates a three-dimensional structure of a three-dimensional display substrate according to an exemplary embodiment of the present disclosure;

[0073] Figure 1B This schematic diagram illustrates the relationship between the actual periodic pixel width and the theoretical periodic pixel width of a stereoscopic display substrate according to an exemplary embodiment of the present disclosure.

[0074] Figure 1C The diagram illustrates the refraction of a cylindrical lens in a stereoscopic display substrate according to an exemplary embodiment of the present disclosure.

[0075] Figure 2A The schematic diagram illustrates a cross-sectional structure of a stereoscopic display substrate according to an exemplary embodiment of the present disclosure;

[0076] Figure 2B Schematic illustration Figure 2A A graph showing the relationship between the periodic pixel width Δx of a stereoscopic display substrate and the number of cylindrical lenses.

[0077] Figure 3A The schematic diagram illustrates a cross-sectional structure of a stereoscopic display substrate according to another exemplary embodiment of the present disclosure;

[0078] Figure 3B Schematic illustration Figure 3A A graph showing the relationship between the crosstalk rate of a stereoscopic display substrate and the number of cylindrical lenses.

[0079] Figure 4A A schematic cross-sectional view of a stereoscopic display substrate according to yet another exemplary embodiment of the present disclosure is shown.

[0080] Figure 4B Schematic illustration Figure 4A A graph showing the relationship between the crosstalk rate of a stereoscopic display substrate and the number of cylindrical lenses.

[0081] Figure 5A The schematic diagram illustrates a cross-sectional structure of a stereoscopic display substrate according to another exemplary embodiment of the present disclosure;

[0082] Figure 5B Schematic illustration Figure 5A A graph showing the relationship between the crosstalk rate of a stereoscopic display substrate and the number of cylindrical lenses.

[0083] Figure 6A The schematic diagram illustrates a cross-sectional structure of a stereoscopic display substrate according to another exemplary embodiment of the present disclosure;

[0084] Figure 6B Schematic illustration Figure 6A A graph showing the relationship between the crosstalk rate of a stereoscopic display substrate and the number of cylindrical lenses.

[0085] Figure 7 The schematic diagram illustrates the process of manufacturing a cylindrical lens grating unit.

[0086] It should be noted that, for clarity, the dimensions of layers, structures, or regions in the accompanying drawings used to describe embodiments of this disclosure may be enlarged or reduced; that is, these drawings are not drawn to actual scale. Detailed Implementation

[0087] The technical solutions of this disclosure will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of this disclosure with reference to the accompanying drawings is intended to explain the overall inventive concept of this disclosure and should not be construed as a limitation thereof.

[0088] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details.

[0089] It should be noted that although the terms "first," "second," etc., may be used herein to describe various components, members, elements, regions, layers, and / or parts, these components, members, elements, regions, layers, and / or parts should not be limited by these terms. Rather, these terms are used to distinguish one component, member, element, region, layer, and / or part from another. Thus, for example, the first component, first member, first element, first region, first layer, and / or first part discussed below may be referred to as a second component, second member, second element, second region, second layer, and / or second part without departing from the teachings of this disclosure.

[0090] For ease of description, spatial relation terms, such as “above,” “below,” “left,” “right,” etc., may be used herein to describe the relationship between one element or feature and another element or feature as shown in the figure. It should be understood that spatial relation terms are intended to cover other orientations of the device in use or operation besides those described in the figure. For example, if the device in the figure were inverted, an element described as “below” or “under” other elements or features would be oriented “above” or “on top” other elements or features.

[0091] In this document, the terms “substantially,” “approximately,” “approximately,” “roughly,” and other similar terms are used as terms of approximation rather than as terms of degree, and they are intended to account for inherent deviations in measured or calculated values ​​that would be recognized by one of ordinary skill in the art. Taking into account factors such as process variations, measurement problems, and errors associated with the measurement of a particular quantity (i.e., limitations of the measurement system), “approximately” as used herein includes stated values ​​and indicates that a particular value is within an acceptable range of deviation for one of ordinary skill in the art. For example, “approximately” may mean within one or more standard deviations, or within ±30%, ±20%, ±10%, ±5% of the stated value.

[0092] It should be noted that in this paper, "same layer" refers to a layer structure formed by using the same film deposition process to form a film layer for a specific pattern, and then using the same mask to pattern that film layer in a single patterning process. Depending on the specific pattern, a single patterning process may include multiple exposure, development, or etching processes, and the specific pattern in the formed layer structure can be continuous or discontinuous. That is, multiple elements, components, structures, and / or portions located in the "same layer" are made of the same material and formed by the same single patterning process. Typically, multiple elements, components, structures, and / or portions located in the "same layer" have approximately the same thickness.

[0093] Those skilled in the art will understand that, unless otherwise stated herein, the expressions “continuous extension,” “monolithic structure,” “integral structure,” or similar expressions mean that multiple elements, components, structures, and / or portions are located on the same layer and are typically formed during manufacturing by the same patterning process, and that these elements, components, structures, and / or portions are continuous extensions without gaps or breaks between them.

[0094] In this document, the directional terms "first direction" and "second direction" are used to describe different directions along a pixel region, such as the vertical and horizontal directions of the pixel region. It should be understood that such representations are merely exemplary descriptions and not limitations of this disclosure.

[0095] In this paper, the term "period pixel width" refers to the width of the image or picture displayed by the display unit after being refracted by one of the cylindrical lenses of the cylindrical lens grating unit and entering the observer's left or right eye. Each period pixel width refers to the width of the display unit that the observer's left or right eye can observe through a cylindrical lens, wherein the images or pictures seen by the left and right eyes are displayed alternately on the display unit.

[0096] In this document, the term "preset field of view position" refers to the position of the optimal display image that an observer can see for the stereoscopic display substrate of the present disclosure embodiment. That is, when the observer's left or right eye is in the preset field of view position, the optimal display image can be seen, and the effect of not generating crosstalk in the present disclosure embodiment can be achieved.

[0097] In this paper, the term "refracting pixel spacing" refers to the spacing between the pixel unit corresponding to each cylindrical lens and the origin of the field of view, taking into account the refraction of each cylindrical lens.

[0098] In this paper, the term "original pixel pitch" refers to the distance between the pixel unit corresponding to each cylindrical lens and the origin of the field of view, without considering the refraction of each cylindrical lens.

[0099] In this paper, the term "width" refers to the width of the cylindrical lens in the first direction within the cylindrical lens grating unit.

[0100] Currently, all commercially available 3D display devices suffer from crosstalk and ghosting issues, especially in wide viewing angles. The main reason is that the design of these devices did not consider the varying degrees of refraction caused by the different relative positions of the lenticular lenses to the human eye. Furthermore, the lenticular lenses in commercially available 3D display devices use materials such as PET film as the substrate. During the bonding process between the lenticular lenses and the display unit, significant process variations can prevent complete bonding, further increasing global crosstalk and resulting in poor display quality.

[0101] To address the aforementioned problems, embodiments of this disclosure provide a stereoscopic display substrate, including but not limited to: a substrate; a display unit disposed on one side of the substrate, the display unit comprising a plurality of pixel units arranged in an array structure in a first direction and a second direction, the plurality of pixel units having a periodic pixel width Δx in the first direction, the first direction and the second direction intersecting; a first dielectric layer disposed on the side of the display unit away from the substrate; a lenticular lens grating unit disposed on the side of the first dielectric layer away from the substrate, the lenticular lens grating unit comprising a rigid substrate and a plurality of lenticular lenses continuously arranged along the first direction, each lenticular lens having a width P; wherein, the stereoscopic display substrate has a preset field of view position with optimal display effect in a third direction, the third direction being perpendicular to the first direction and the second direction; in the first direction, the width P of the lenticular lenses increases from the origin of the field of view toward a direction away from the origin of the field of view, the origin of the field of view being the intersection of the third direction with the first direction and the second direction, the preset field of view position being spaced E from the origin of the field of view in the third direction. z The width P of each cylindrical lens is determined based on at least one of the preset number of cylindrical lenses m and the periodic pixel width Δx, as well as the refractive pixel spacing y. k The calculated refractive pixel spacing y k To account for the distance between the pixel unit corresponding to the k-th cylindrical lens and the origin of the field of view, where k is an integer greater than 0, the refracting pixel spacing y k The original pixel spacing y of the cylindrical lens o The difference is less than or equal to the crosstalk limit M, which is associated with the width of the pixel unit in the first direction, and the original pixel spacing y o The distance between the pixel unit corresponding to the k-th cylindrical lens and the origin of the field of view, without considering refraction.

[0102] According to embodiments of this disclosure, on the one hand, by setting a rigid substrate in the lenticular lens grating unit, the lenticular lens grating unit can be effectively bonded to the display unit, reducing crosstalk caused by process fluctuations. On the other hand, by setting the width of the lenticular lens in the lenticular lens grating unit to increase from the origin of the field of view toward a direction away from the origin of the field of view, the problem of crosstalk caused by the refraction of the lenticular lens during display of the stereoscopic display substrate can be effectively reduced or completely eliminated, thereby effectively improving the display effect of the stereoscopic display substrate.

[0103] The following is combined Figures 1A to 7 The stereoscopic display substrate of the present disclosure will be described in detail.

[0104] Figure 1AThe schematic diagram illustrates a three-dimensional structure of a three-dimensional display substrate according to an exemplary embodiment of the present disclosure. Figure 1B The diagram illustrates the relationship between the actual periodic pixel width and the theoretical periodic pixel width of a stereoscopic display substrate according to an exemplary embodiment of the present disclosure. Figure 1C The diagram illustrates the refraction of a cylindrical lens on a stereoscopic display substrate according to an exemplary embodiment of the present disclosure.

[0105] Figure 2A The schematic diagram illustrates a cross-sectional structure of a stereoscopic display substrate according to an exemplary embodiment of the present disclosure.

[0106] like Figure 1A , Figure 1B as well as Figure 2A As shown, the stereoscopic display substrate includes a substrate 10, a display unit 20, a first dielectric layer 30, and a lenticular lens grating unit 40.

[0107] The substrate 10 may be, for example, a glass substrate. A display unit 20 is disposed on one side of the substrate 10. The display unit 20 includes a plurality of pixel units for displaying different images. Each pixel unit may include a plurality of sub-pixels, such as a first sub-pixel 21, a second sub-pixel 22, and a third sub-pixel 23. For example, the first sub-pixel 21 may be a red sub-pixel, the second sub-pixel 22 may be a blue sub-pixel, and the third sub-pixel 23 may be a green sub-pixel. In other optional embodiments of this disclosure, the number of sub-pixels may also be other feasible numbers, and this disclosure does not limit this number.

[0108] like Figure 1A As shown, multiple pixel units are arranged in an array structure in the first direction X and the second direction Y, where the first direction X and the second direction Y intersect. Each pixel unit has a periodic pixel width Δx in the first direction X, which is the width of the pixel displayed on the display unit as seen by the observer's left or right eye through each cylindrical lens. The periodic pixel width Δx is related to the viewing angle and the distance between the observer's left or right eye and the cylindrical lens. The plane formed by the first direction X and the second direction Y is parallel to the plane containing the substrate 10. The substrate 10, the display unit 20, the first dielectric layer 30, and the cylindrical lens grating unit 40 are stacked in a third direction Z, which is perpendicular to the first direction X and the second direction Y.

[0109] The first dielectric layer 30 may be used for bonding the display unit and the lenticular lens grating unit, for example, the first dielectric layer 30 includes OCA (Optically Clear Adhensive) adhesive.

[0110] like Figure 2AAs shown, the cylindrical lens grating unit 40 is disposed on the side of the first dielectric layer 30 away from the substrate. The cylindrical lens grating unit 40 includes a rigid substrate 41 and a plurality of cylindrical lenses continuously disposed along a first direction, wherein each cylindrical lens has a width P. According to embodiments of the present disclosure, by designing the width P, crosstalk of the stereoscopic display substrate can be reduced or completely eliminated.

[0111] The embodiments of this disclosure will now be described in detail with reference to the design principle of the width of the cylindrical lens in the first direction.

[0112] In stereoscopic display devices, in general image arrangement algorithms, the relationship between the periodic pixel width Δx corresponding to the cylindrical lens at different positions calculated based on the human eye position and the width P of the cylindrical lens is shown in formula (1), that is, the periodic pixel width Δx corresponding to the cylindrical lens and the width P are fixed values.

[0113]

[0114] like Figure 1B As shown in (a), Ez represents the distance between the observer's glasses and the cylindrical lens in the third direction Z, L represents the left eye, and R represents the right eye. In actual viewing, the left and right eyes can respectively see the periodic pixel width corresponding to each cylindrical lens. By displaying different patterns on the periodic pixel widths seen by the left and right eyes, the stereoscopic image effect is achieved. h is the equivalent air distance between the main lens and the display unit, such as... Figure 1B As shown in (b), the equivalent air gap h can be calculated based on the actual gap h' between the cylindrical lens and the display unit.

[0115] In actual display processes, assuming the left eye L (or right eye) is at the origin of the field of view, due to refraction, the actual periodic pixel width Δx' that the human eye can see decreases as the distance between the cylindrical lens and the human eye in the first direction X increases. Therefore, it is necessary to fully consider the distance between the pixel unit corresponding to each cylindrical lens after refraction and the origin of the field of view, i.e., the refracted pixel spacing y. k And the distance between the pixel unit corresponding to each cylindrical lens and the origin of the field of view, without considering the refraction of each cylindrical lens, i.e., the original pixel spacing y. o That is, it is necessary to consider the pixel spacing y of the refraction. k and the original pixel spacing y o The difference between them is used to determine whether crosstalk exists.

[0116] Based on the principle of refraction, the pixel spacing y can be calculated using formula (2). k Value:

[0117]

[0118] Where h is the equivalent air gap between the main lens and the display unit, and n is the ratio of the lens refractive index n2 to the refractive index n1 of the medium surrounding the lens.

[0119] like Figure 1C As shown, considering the angle θ1 of the light ray in the medium surrounding the cylindrical lens and the angle θ2 in the cylindrical lens, according to the conversion relationship between refractive index and angle, i.e., formulas (3) and (4), formula (2) is transformed to obtain formula (5), as follows:

[0120] sinθ1×n1=sinθ2×n2 Formula (3)

[0121]

[0122]

[0123] Where h is the equivalent air gap between the cylindrical lens and the display unit, and the equivalent air gap h can be calculated based on the actual gap h' between the cylindrical lens and the display unit. That is, starting from the origin of the field of view, the refracted pixel gap y between the pixel unit corresponding to the k-th cylindrical lens and the origin of the field of view. k (k) can be calculated using formula (5).

[0124] Original pixel spacing y o We can obtain the following from formula (6):

[0125] y o (k)=k×Δx Formula (6)

[0126]

[0127] The pixel unit corresponding to the k-th cylindrical lens has an initial pixel spacing y between it and the origin of the field of view. o (k) can be calculated using formulas (6) and (7).

[0128] In the embodiments of this disclosure, in order to reduce crosstalk and make the actual periodic pixel width Δx' approach the theoretical periodic pixel width Δx, the width P of the cylindrical lens is designed to solve the problem of the inconsistency between the actual periodic pixel width Δx' and the theoretical periodic pixel width Δx, thereby achieving the purpose of reducing crosstalk and improving the display effect of the display substrate.

[0129] For example, the stereoscopic display substrate of this disclosure has a preset field of view position with the best display effect in the third direction. For example, the preset field of view position is set at the center of the stereoscopic display substrate, and the distance between it and the cylindrical lens in the third direction is E. zFor example, if the first direction X, the second direction Y, and the third direction Z intersect at the center of the stereoscopic display substrate, and this intersection is taken as the origin of the field of view O, then the distance between the origin of the field of view and the third direction Z at the preset field of view position is E. z .

[0130] The cylindrical lens grating unit 40 disclosed herein includes a plurality of cylindrical lenses 42 continuously arranged in a first direction X. The width P of the cylindrical lenses increases from the origin of the field of view O toward a direction away from the origin of the field of view. For example, the width P of the cylindrical lenses increases linearly; or the width P of the cylindrical lenses increases non-linearly; or the width P of the cylindrical lenses increases in segments, that is, there are multiple width regions, such as a first region close to the origin of the field of view O and a second region away from the origin of the field of view O. The width P1 of the adjacent cylindrical lenses in the first region is smaller than the width P2 of the adjacent cylindrical lenses in the second region.

[0131] In embodiments of this disclosure, when the refractive pixel spacing y k (k) and the original pixel spacing y o If the difference between (k) exceeds the crosstalk limit, then the display substrate is considered to have crosstalk. The crosstalk rate is calculated using formula (8).

[0132]

[0133] That is, when rate(k)≤1, it is considered that no crosstalk is generated, and when rate(k)>1, it indicates that crosstalk exists on the display substrate.

[0134] In embodiments of this disclosure, the crosstalk limit M is associated with the width of the pixel unit in the first direction; for example, M is determined to be 2 / 3 of the pixel width, i.e., 2 / 3 pixel. In other alternative embodiments, the crosstalk limit M can also be specifically designed according to the actual display effect; for example, if a display substrate with better display effect is required, M can be smaller than the above value.

[0135] In some embodiments of this disclosure, the width P of each cylindrical lens is determined based on at least one of a preset number of cylindrical lenses m and a periodic pixel width Δx, as well as the refractive pixel spacing y. k Calculated. For example, based on the preset number of cylindrical lenses m and the refractive pixel spacing y. k This is calculated. For example, it can be obtained based on the periodic pixel width and the refractive pixel spacing y. k The calculated pixel spacing y is obtained. k The original pixel spacing y of the cylindrical lens o The difference is less than or equal to the crosstalk limit M, which is associated with the width of the pixel unit in the first direction, for example, crosstalk limit M = 2 / 3 pixel.

[0136] The following is based on Figure 2A The cylindrical lens spacing P of the embodiment will be described in detail.

[0137] like Figure 2A As shown, the stereoscopic display substrate includes a substrate 10, a display unit 20, a first dielectric layer 30, a lenticular lens grating unit 40, a second dielectric layer 50, and an encapsulation layer 60.

[0138] For example, the cylindrical lens grating unit 40 includes a rigid substrate 41 and a plurality of cylindrical lenses 42. The rigid substrate 41 is disposed on the side close to the substrate 10; the cylindrical lenses 42 are disposed on the side away from the substrate 10, and the cylindrical lenses have convex curved surfaces facing away from the substrate.

[0139] The first dielectric layer 30 is used to bond the display unit 20 to the lenticular lens grating unit 40.

[0140] The second dielectric layer 50 is disposed on the side of the cylindrical lens grating unit away from the substrate. The encapsulation layer 60 is disposed on the side of the second dielectric layer away from the substrate.

[0141] For example, the second dielectric layer 50 may be made of the same material as the first dielectric layer 30, or it may be made of other dielectric materials. For example, the second dielectric layer 50 may be made of a material with a low refractive index. The encapsulation layer 60 is used to encapsulate and protect the stereoscopic display substrate, preventing the internal film layers of the display substrate from being damaged by the environment. In other alternative embodiments, the second dielectric layer 50 and the encapsulation layer 60 may be selectively configured.

[0142] like Figure 2A In the illustrated embodiment, in the first direction X, the width P of the cylindrical lens increases linearly from the origin of the field of view toward a direction away from the origin of the field of view; the width P of each cylindrical lens is determined based on the periodic pixel width Δx and the refractive pixel spacing y of the k-th cylindrical lens. k The width P0 of the cylindrical lens at the origin of the field of view is calculated.

[0143] For example, taking the origin of the field of view O as the starting point, the width P of the cylindrical lens along the first direction X toward the direction away from the origin of the field of view O satisfies formula (9):

[0144]

[0145] Here, α is a correction coefficient used to adjust the slope of the change in the width of the cylindrical lens, thereby obtaining a linearly changing width of each cylindrical lens. This can reduce or eliminate crosstalk, thus improving the display effect of the stereoscopic display substrate.

[0146] Where P minThis refers to the minimum width of the cylindrical lens. In this embodiment, the minimum cylindrical lens width P is calculated according to formula (1). min .

[0147] That is, the calculated Where Δx is a known, definite value.

[0148] Next, since the periodic pixel width Δx of the display unit of the stereoscopic display substrate remains unchanged, the actual periodic pixel width Δx' after refraction by each cylindrical lens is equal. P is calculated according to the above formula (5), and the following formulas (10) and (11). max .

[0149] Δx′=y k (k)-y k (k-1) Formula (10)

[0150]

[0151] By determining the number k of cylindrical lenses k along the first direction X from the origin O of the field of view to the side of the display substrate, P can be determined according to Formulas 5, 10, and 11. max In the embodiments of this disclosure, the display effect of the display substrate is simulated by adjusting the range of the correction coefficient α, thereby obtaining the optimal correction coefficient α, and P, which shows a linear increasing trend, is determined based on the correction coefficient α.

[0152] Figure 2B Schematic illustration Figure 2A The relationship between the periodic pixel width Δx of the stereoscopic display substrate and the number of cylindrical lenses is shown in the figure.

[0153] For example, the correction factor α ranges from 2.2 to 2.6. For instance, when the correction factor α is 2.5, the distribution of the periodic pixel width Δx' of each cylindrical lens after actual refraction calculation is closest to the theoretical distribution of the periodic pixel width Δx. As shown in Appendix 2B, the colors progressively darker represent the periodic pixel width Δx' of the cylindrical lens after actual refraction calculation, and the periodic pixel width Δx' of the cylindrical lens after actual non-refraction calculation. non And the theoretical periodic pixel width Δx. And from Figure 2B As can be seen from this, the actual non-refractive cylindrical lens has an axial pixel width Δx. non As the distance from the origin O of the field of view increases, the width of the cylindrical lens decreases. To reduce crosstalk between pixels, a linear variation design is implemented for the cylindrical lens width, thereby reducing the difference between the actual periodic pixel width and the theoretical periodic pixel width. Figure 2B As shown, the periodic pixel width Δx' of each cylindrical lens after actual refraction calculation is closest to the theoretical periodic pixel width Δx distribution.

[0154] In this embodiment, it is assumed that the preset field of view position is (0, 0, 700), which is the distance E between the human eye position and the cylindrical lens. z The value is 700mm, and in the first direction X, the number of cylindrical lenses in the cylindrical lens grating unit from the origin O of the field of view to the side of the cylindrical lens grating unit is 5000. Therefore, according to the above-mentioned P... min The calculation formula is used to calculate P. min =01145100mm, P is calculated according to formulas 5, 10 and 11 above. max =0.145172mm. Further based on Formula 9 and P min and P max The value of P is calculated.

[0155] like Figure 2A As shown, in this embodiment, the widths of adjacent cylindrical lenses change linearly, so the width P of adjacent cylindrical lenses... 12 -P 11 =P 13 -P 12 .

[0156] In this embodiment, by setting the width P of adjacent cylindrical lenses to a linearly increasing trend, the formula (8) for calculating the crosstalk rate of the cylindrical lenses is:

[0157]

[0158] The calculated crosstalk rate is less than 1. Therefore, given the number of cylindrical lenses from the origin O of the field of view to the side of the cylindrical lens grating unit, the crosstalk of the stereoscopic display substrate can be effectively reduced or even eliminated by setting the width P of the cylindrical lens to a linear variation.

[0159] Figure 3A A schematic cross-sectional view of a stereoscopic display substrate according to another exemplary embodiment of the present disclosure is shown. Figure 3B Schematic illustration Figure 3A The relationship between the crosstalk rate of the stereoscopic display substrate and the number of cylindrical lenses is shown in the figure.

[0160] like Figure 3A As shown, the stereoscopic display substrate includes a substrate 10, a display unit 20, a first dielectric layer 30, a lenticular lens grating unit 40', a second dielectric layer 50, and an encapsulation layer 60.

[0161] For example, the cylindrical lens grating unit 40' includes a rigid substrate 41' and a plurality of cylindrical lenses 42'. The rigid substrate 41' is disposed on the side away from the substrate 10; the cylindrical lenses 42' are disposed on the side close to the substrate 10, and the cylindrical lenses have convex curved surfaces facing towards the side close to the substrate.

[0162] The first dielectric layer 30 is used to bond the display unit 20 to the lenticular lens grating unit 40.

[0163] In this embodiment, a glass substrate 31 is further provided between the first dielectric layer 30 and the cylindrical lens grating unit 40'. The glass substrate 31 is used to make the cylindrical lens grating unit 40' and the display unit 20 more flat, and to prevent crosstalk caused by process fluctuations during the bonding process.

[0164] In this embodiment, the cylindrical lens grating unit 40' and the cylindrical lens grating unit 40 are arranged in opposite directions. The width P between adjacent cylindrical lenses 42' of the cylindrical lens grating unit 40' is calculated using the above formula (9), and P min and P max It was calculated using the same method as described above, and further based on the width P. min and width P max The width P of the cylindrical lens in the cylindrical lens grating unit of the display substrate with this structure is obtained.

[0165] like Figure 3B As shown, the crosstalk rate after linearly designing the width of the cylindrical lens in the cylindrical lens grating unit is rate(k), and the crosstalk rate without designing the width of the cylindrical lens in the cylindrical lens grating unit is rate(k). non It can be seen that the crosstalk rate of stereoscopic display substrates with linearly designed cylindrical lens widths is less than 1, while the crosstalk rate of stereoscopic display substrates without cylindrical lens width design gradually increases after the number of cylindrical lenses exceeds a certain limit. For example... Figure 3B As shown, without proper cylindrical lens width design, the crosstalk rate of the stereoscopic display substrate exceeds 1 when the number of cylindrical lenses exceeds 2300, and exhibits a non-linear increasing trend. Therefore, this embodiment, by setting the cylindrical lens width of the cylindrical lens grating to increase linearly from the origin of the field of view towards the direction away from the origin, can reduce or even eliminate crosstalk, effectively improving the display effect of the stereoscopic display substrate.

[0166] Figure 4A A schematic cross-sectional view of a stereoscopic display substrate according to yet another exemplary embodiment of the present disclosure is shown. Figure 4B Schematic illustration Figure 4A The relationship between the crosstalk rate of the stereoscopic display substrate and the number of cylindrical lenses is shown in the figure.

[0167] like Figure 4A As shown, in this embodiment, in the first direction X, the width P of the cylindrical lens increases non-linearly from the origin of the field of view toward a direction away from the origin of the field of view. The width P of the k-th cylindrical lens is determined based on the periodic pixel width Δx and the refractive pixel spacing y of the k-th cylindrical lens. k The width P0 of the cylindrical lens at the origin of the field of view is calculated.

[0168] For example, the stereoscopic display substrate includes a substrate 10, a display unit 20, a first dielectric layer 30, a lenticular lens grating unit 40, a second dielectric layer 50, and an encapsulation layer 60.

[0169] Based on the eye position, refraction is considered to calculate the periodic pixel width Δx' of each cylindrical lens, and the width P of each cylindrical lens is determined based on each periodic pixel width. When the eye is at a preset field of view position, the distance E of the eye in the first direction X is... x The distance on is 0, i.e., E x =0.

[0170] By E x Substitute =0 into the above formula (5) and perform coordinate transformation on formula (5), where k>0, where k represents the kth cylindrical lens distance from the origin of the field of view where the human eye is located.

[0171] Performing a coordinate transformation on the above formula (5), we obtain the following formula (12). That is, the width P of the k-th cylindrical lens satisfies the following relationship:

[0172]

[0173] The refractive pixel spacing y corresponding to each cylindrical lens is obtained according to formulas (10), (11), and (12). k And the periodic pixel width Δx'. If complete elimination of crosstalk is required, the pixel periodic width Δx' needs to be set to the same as the periodic pixel width Δx of the adjacent cylindrical lens at the origin of the field of view O.

[0174] Based on the above formulas (10), (11) and (12), the width P of each cylindrical lens can be calculated.

[0175] For example, if the number of cylindrical lenses from the origin O of the field of view to the side of the cylindrical lens grating unit is known, for example, if the number of cylindrical lenses is 5000, then P0 = 0.1451 mm is calculated using the method described above. max= 0.145183mm. The widths of the remaining adjacent cylindrical lenses are 0.1451mm < P < 0.145183mm, and the width P of each cylindrical lens calculated according to the above formula shows a non-linear increasing trend from the origin of the field of view towards the direction away from the origin of the field of view within the above range.

[0176] like Figure 4A As shown, P 22 -P 21 <P 23 -P 22 <P 24 -P 23 That is, the width P of the cylindrical lens increases non-linearly from the origin O of the field of view to the side of the cylindrical lens grating unit.

[0177] In this embodiment, the refractive pixel spacing y of the k-th cylindrical lens k The original pixel spacing y of the k-th cylindrical lens o The absolute value of the difference approaches 0. That is, by nonlinearly designing the width of the cylindrical lens, the periodic pixel width Δx' after considering refraction is made the same as the theoretical periodic pixel width Δx, thereby achieving the goal of completely eliminating crosstalk.

[0178] like Figure 4B As shown, the crosstalk rate after nonlinearly designing the width of the cylindrical lens in the cylindrical lens grating unit is rate(k), and the crosstalk rate without designing the width of the cylindrical lens in the cylindrical lens grating unit is rate(k). non By designing the cylindrical lens width, the periodic pixel width Δx' of each cylindrical lens after actual refraction calculation can be made the same as the theoretical periodic pixel width Δx. That is, according to formula (8), the crosstalk rate can be obtained as 0, i.e., as shown in the figure. Figure 4B As shown. Therefore, by non-linearly designing the width of the cylindrical lenses in the cylindrical lens grating unit, crosstalk can be completely eliminated, effectively improving the display effect of the stereoscopic display substrate.

[0179] Figure 5A The schematic diagram illustrates a cross-sectional structure of a stereoscopic display substrate according to another exemplary embodiment of the present disclosure. Figure 5B Schematic illustration Figure 5A The relationship between the crosstalk rate of the stereoscopic display substrate and the number of cylindrical lenses is shown in the figure.

[0180] like Figure 5A As shown, in the first direction, the width P of the cylindrical lens increases piecewise from the origin of the field of view toward a direction away from the origin of the field of view. The width P of the k-th cylindrical lens is determined based on the preset number of cylindrical lenses m and the refractive pixel spacing y. k The original pixel spacing y oAnd the crosstalk limit M is calculated.

[0181] For example, the total number m of preset cylindrical lenses on the stereoscopic display substrate is a known number. In the first direction X, the cylindrical lenses include a first cylindrical lens located in a first region and a second cylindrical lens located in a second region. The width of the first cylindrical lens in the first region is a first width P1, and the width of the second cylindrical lens in the second region is a second width P2. The first width P1 is smaller than the second width P2 of the second cylindrical lens.

[0182] In this embodiment, the total number of preset cylindrical lenses m of the stereoscopic display substrate is known. Substituting m into formulas (2), (6) and (8), we obtain the following formulas (13), (14) and (15), respectively. Furthermore, according to formula (1) and the above formulas, we obtain the first width P1.

[0183] Specifically, the first width P1 of the first cylindrical lens satisfies the following relationship:

[0184]

[0185] y o (m)=m×Δx Formula (14)

[0186] y k (m)-y o (m)≤M Formula (15)

[0187]

[0188] After calculating the first width P1, the number of cylindrical lenses k from the origin of the field of view toward the edge of the first region is calculated according to the following formula (17). max And the second width P2 of the second cylindrical lens in the second region:

[0189]

[0190] like Figure 5A As shown, the first region is A1, and the second region is A2. After determining the first width P1 according to the above steps, k is calculated according to the above formula 17. max And the second width P2.

[0191] Among them, such as Figure 5A As shown, with the field of view origin O as the starting point, the number of cylindrical lenses from the field of view origin O to the side of the cylindrical lens grating unit is m. The cylindrical lens width of the cylindrical lens grating unit in the first region is constant at P1, and the cylindrical lens width of the cylindrical lens grating unit in the second region from the first region toward the direction away from the field of view origin O is constant at P2.

[0192] like Figure 5A As shown, the width of the cylindrical lens in the first region is P1 = P 31 =P 32 <P2=P 33 That is, the width P1 of the cylindrical lenses in the first region is equal, the width P2 of the cylindrical lenses in the second region is equal, and P1 < P2.

[0193] According to Formula 17 above, for example, when the distance E between the human eye and the display substrate... z Given a value of 700, and the human eye position being at the center of the screen (directly opposite the origin O of the field of view), and the number of cylindrical lenses m furthest from the human eye being 4800, then k can be calculated using the above formula. max The crosstalk reduction is 3795, P1 is 0.1451432mm, and P2 is 0.1451538mm. After optimization, the crosstalk reduction effect is as follows: Figure 5B As shown, within the range of 4800 cylindrical lenses, the crosstalk rate is less than 1, indicating that the crosstalk requirements are met. The crosstalk rate after segmenting the width of the cylindrical lenses in the cylindrical lens grating unit is rate(k), and the crosstalk rate without segmenting the width of the cylindrical lenses in the cylindrical lens grating unit is rate(k). non ),according to Figure 5B It can be seen that segmenting the width of the cylindrical lens in the cylindrical lens grating unit can effectively reduce crosstalk of the display substrate and improve the display effect.

[0194] In some feasible embodiments of this disclosure, the protrusions of the cylindrical lenses of the cylindrical lens grating of the display substrate can be designed to face the substrate or to be designed to move away from the substrate. The width of the cylindrical lenses can adopt the linear variation design, nonlinear variation design, and segmented variation design schemes described above.

[0195] In some embodiments of this disclosure, the materials used to manufacture the cylindrical lens include rigid materials such as plexiglass, polycarbonate, epoxy acrylate, polyurethane acrylate, and unsaturated polyester, or flexible PET materials.

[0196] For example, in some embodiments of this disclosure, the lenticular lens grating unit includes a rigid substrate and a plurality of lenticular lenses. By selecting a rigid material as the forming material of the lenticular lenses, the crosstalk problem caused by the bonding process of the lenticular lens grating unit with other film layers (e.g., display units) can be effectively avoided, thereby reducing the crosstalk of the display substrate as a whole.

[0197] For example, in some other embodiments of this disclosure, the cylindrical lenses in the cylindrical lens grating unit can be formed of soft PET material. By setting a rigid substrate in the cylindrical lens grating unit, the crosstalk problem caused by the bonding process between the cylindrical lens grating unit and other film layers can also be effectively avoided, thereby reducing the crosstalk of the display substrate as a whole and effectively improving the display effect of the stereoscopic display substrate.

[0198] Figure 7 The schematic diagram illustrates the process of manufacturing a cylindrical lens grating unit.

[0199] In some embodiments of this disclosure, the cylindrical lens grating unit is manufactured according to the following method:

[0200] This includes operations S1 through S4.

[0201] In operation S1, a cylindrical lens forming material is coated in the cylindrical lens mold.

[0202] For example, a cylindrical lens mold can be a sheet mold or a roller mold.

[0203] In operation S2, the rigid substrate is placed on the side of the cylindrical lens forming material away from the mold.

[0204] In operation S3, pressure is applied to the rigid substrate to completely fill the cylindrical lens mold with the cylindrical lens forming material.

[0205] In operation S4, the cylindrical lens forming material that completely fills the cylindrical lens mold is cured, demolded, cut, and cleaned to form the cylindrical lens grating unit.

[0206] In one feasible embodiment, the cylindrical lens grating unit can be manufactured using a Plate to Plate UV transfer process, specifically including: Step 1, placing and fixing the sheet mold on a base; Step 2, applying UV adhesive to one side of the sheet mold with microstructure parameters; Step 3, fixing a glass substrate above the sheet mold; Step 4, using a pressure roller to roll on the glass substrate, uniformly filling the mold with UV adhesive and imprinting it onto the substrate; Step 5, completing UV curing by irradiation with ultraviolet light; Step 6, demolding the cylindrical lens; Step 7, cutting and cleaning; Step 8, obtaining the finished product and performing appearance and optical inspection.

[0207] In another feasible embodiment, the cylindrical lens grating unit can be printed using a Roll to Plate UV transfer process, specifically including: Step 1, placing and fixing a glass substrate on a vacuum adsorption platform and preparing it by cleaning; Step 2, applying UV adhesive to one side of a microstructure optical roller mold; Step 3, imprinting the cylindrical lens structure onto the material using an optical roller mold with designed microstructure parameters; Step 4, completing UV curing by irradiation with ultraviolet light; Step 5, performing appearance and optical inspection; Step 6, cutting and packaging according to the specified cylindrical lens angle.

[0208] In another feasible embodiment, the cylindrical lens grating unit can be manufactured using a roll-to-roll process, specifically including: step 1, unwinding and feeding; step 2, applying UV adhesive to the material using a coating head; step 3, imprinting the cylindrical lens structure onto the material using an optical roller with designed microstructure parameters; step 4, completing UV curing using ultraviolet light irradiation; step 5, performing appearance and optical inspection; and step 6, rewinding and cutting to the specified cylindrical lens angle. Furthermore, a rigid substrate is provided on the side of the cylindrical lens away from the protrusion to form the cylindrical lens grating unit.

[0209] Figure 6A The schematic diagram illustrates a cross-sectional structure of a stereoscopic display substrate according to another exemplary embodiment of the present disclosure. Figure 6B Schematic illustration Figure 6A The relationship between the crosstalk rate of the stereoscopic display substrate and the number of cylindrical lenses is shown in the figure.

[0210] like Figure 6A As shown, in this embodiment, the stereoscopic display substrate includes a substrate 10, a display unit 20, a first dielectric layer 30, a lenticular lens grating unit 40', a second dielectric layer 50, and an encapsulation layer 60.

[0211] The lenticular lens grating unit 40' includes a rigid substrate 41' and a plurality of lenticular lenses 42'. The rigid substrate 41' is disposed on the side away from the substrate 10. The lenticular lenses 42' are disposed on the side close to the substrate 10, and each lenticular lens has a convex curved surface facing towards the side close to the substrate. A glass substrate 31 is also disposed between the first dielectric layer 30 and the lenticular lens grating unit 40', wherein the glass substrate 31 is used to make the lenticular lens grating unit 40' and the display unit 20 more flat, preventing crosstalk caused by process fluctuations during bonding.

[0212] In this embodiment, in the first direction, the width P of each cylindrical lens in the cylindrical lens grating unit is equal. For example... Figure 6A As shown, P 41 =P 42In this embodiment, to avoid inconsistencies in the size of the cylindrical lens width due to linear or nonlinear design, which could lead to complex processes and increased production costs, the width of the cylindrical lens is set to a predetermined value. This allows the stereoscopic display substrate to be produced at a lower manufacturing cost, resulting in a display substrate that reduces or avoids crosstalk.

[0213] For example, the width P of each cylindrical lens is determined based on a preset number m of the plurality of cylindrical lenses and the refractive pixel spacing y. k The original pixel spacing y o And the refractive pixel spacing y calculated from the crosstalk limit M. k To account for the distance between the pixel unit corresponding to the k-th cylindrical lens and the origin of the field of view, where k is an integer greater than 0, the refracting pixel spacing y k The original pixel spacing y of the cylindrical lens o The difference is less than or equal to the crosstalk limit M, which is associated with the width of the pixel unit in the first direction, and the original pixel spacing y o The distance between the pixel unit corresponding to the k-th cylindrical lens and the origin of the field of view, without considering refraction.

[0214] For example, if the number of cylindrical lenses is known, substitute m into the above formulas (2), (6) and (8) to obtain formulas (13), (14) and (15) respectively. Then, according to formula (1) and the above formulas, the width P of the cylindrical lens is obtained.

[0215] The distance E between the human eye position and the display substrate z The field of view is 700mm. The human eye is at the preset field of view position (0, 0, 700). In the first direction, the preset number m of the cylindrical lens farthest from the human eye is 3800. According to the original design P = 0.1451mm, according to the aforementioned formulas (1) to (8), P = 0.145143mm is calculated.

[0216] like Figure 6B As shown, within the preset number of lenses m = 3800, the crosstalk rate rate (rate(k)) after designing the width of the cylindrical lenses in the cylindrical lens grating unit is less than 1, while the crosstalk rate rate (rate(k)) without designing the width of the cylindrical lenses in the cylindrical lens grating unit is less than 1. non After approximately 2300, the crosstalk rate exceeds 1. Therefore, by setting a fixed value for the width of the cylindrical lens, the crosstalk problem of the cylindrical lens can be effectively improved compared to the original cylindrical lens width.

[0217] In another aspect of this disclosure, a display device is also provided, which includes the display substrate described above.

[0218] The beneficial effects that the display device in the above embodiments of this disclosure can achieve are the same as the beneficial effects that the display substrate can achieve, and will not be repeated here.

[0219] The aforementioned display device can be any device that displays images, whether moving (e.g., video) or fixed (e.g., still images), and whether it contains text or images. More specifically, the embodiments described are contemplated to be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controllers and / or displays, displays of camera views (e.g., displays of rearview cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging and aesthetic structures (e.g., displays of images of a piece of jewelry), etc.

[0220] While some embodiments of the general concept of this disclosure have been illustrated and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined by the claims and their equivalents.

Claims

1. A stereoscopic display substrate, wherein, Comprising: a substrate substrate; A display unit is disposed on the substrate side, the display unit including a plurality of pixel units arranged in an array structure in a first direction and a second direction, the plurality of pixel units having a periodic pixel width in the first direction , the first direction and the second direction intersecting. a first dielectric layer disposed on a side of the display unit away from the substrate substrate; a column lens grating unit disposed on a side of the first dielectric layer away from the substrate substrate, the column lens grating unit comprising a hard base and a plurality of column lenses disposed continuously along a first direction, each column lens having a width P; wherein the stereoscopic display substrate has a preset field of view position with optimal display effect in a third direction, the third direction being perpendicular to the first direction and the second direction; In the first direction, the width P of the column lens has a tendency to increase from a field of view origin to a direction away from the field of view origin, the field of view origin being where the third direction intersects the first direction and the second direction, the distance between the third direction and the field of view origin in the third direction being ; A width P of each lenticule is determined according to a preset number m of lenticules and a period pixel width y of the plurality of lenticules and a refractive pixel pitch y k calculated, the refractive pixel pitch y k is a distance between a pixel unit corresponding to the kth lenticule considering refraction and the field of view origin, k is an integer greater than 0, the refractive pixel pitch y k a difference between the refractive pixel pitch y o and an original pixel pitch y o of the column lens is less than or equal to a crosstalk limit M associated with a width of the pixel unit in a first direction, the original pixel pitch y o is a distance between a pixel unit corresponding to the kth column lens and the field of view origin without considering refraction.

2. The stereoscopic display substrate according to claim 1, wherein The width P of the column lens, the refractive pixel pitch y k and the original pixel pitch y o satisfies the following formula: (1) (2) (3) wherein h is an equivalent air gap of the lenticular lens and the display unit, n is a ratio of a refractive index n2 of the lenticular lens and a refractive index n1 of the first medium layer, is an angle between the light ray and the normal in the lenticular lens, is a refractive pixel pitch of the corresponding pixel unit of the kth lenticular lens and the field of view origin, is an original pixel pitch of the corresponding pixel unit of the kth lenticular lens and the field of view origin.

3. The stereoscopic display substrate according to claim 2, wherein In the first direction, the width P of the column lens increases linearly from the field of view origin towards a direction away from the field of view origin; wherein a width P of the kthlens is calculated from the periodic pixel width , a refractive pixel pitch y of the kthlens k and a lens width P0 at the field of view origin.

4. The stereoscopic display substrate according to claim 3, wherein The width P of the kth column lens satisfies the following linear relationship: (4) (5) (6) wherein a is a correction coefficient, P min = P0, P max is calculated according to the refractive pixel pitch y k of the kth column lens and the column lens width P0 at the field of view origin, y k-1 is the refractive pixel pitch of the k-1th column lens.

5. The stereoscopic display substrate according to claim 4, wherein The value of a is in the range of 2.2≤a≤2.

6.

6. The stereoscopic display substrate according to claim 2, wherein In the first direction, the width P of the column lens increases non-linearly from the field of view origin towards a direction away from the field of view origin; wherein a width P of the kthlens is calculated from the periodic pixel width , a refractive pixel pitch y of the kthlens k and a lens width P0 at the field of view origin.

7. The stereoscopic display substrate according to claim 6, wherein The width P of the kth column lens satisfies the following relationship: (7) (8) (9) where k > 0, y k-1 is the refractive pixel pitch of the (k-1)th column lens.

8. The stereoscopic display substrate according to claim 7, wherein The refractive pixel spacing y of the k-th cylindrical lens k The original pixel spacing y of the k-th cylindrical lens o The absolute value of the difference approaches 0.

9. The stereoscopic display substrate according to claim 2, wherein In the first direction, the width P of the column lens increases in a segmented manner from the field of view origin towards a direction away from the field of view origin; wherein the width P of the kth column lens is calculated according to the preset column lens number m, the refractive pixel pitch y k , the original pixel pitch y o , and the crosstalk limit M.

10. The stereoscopic display substrate according to claim 9, wherein In the first direction, the column lens comprises first column lenses located in a first region and second column lenses located in a second region, the width of the first column lenses in the first region is a first width P1, and the width of the second column lenses in the second region is a second width P2, The first width P1 is smaller than the second width P2 of the second column lens.

11. The stereoscopic display substrate according to claim 10, wherein The first width P1 of the first column lens satisfies the following relationship: (10) (11) (12) (13) wherein m is a known preset number of column lenses, m is a positive integer greater than 0, is a refracted pixel pitch of the corresponding pixel unit of the mth column lens and the field of view origin, is an original pixel pitch of the corresponding pixel unit of the mth column lens and the field of view origin.

12. The stereoscopic display substrate according to claim 11, wherein In the first direction, the number of cylindrical lenses from the field of view origin towards the first region edge is k max , the second width P2 of the second cylindrical lenses of the second region satisfies the following relationship: (14) where P2 is calculated based on equation (14) and equation (1), y k=kmax is the refractive pixel pitch of the corresponding pixel unit of the k max th column lens and the field of view origin.

13. The stereoscopic display substrate according to any one of claims 1 to 11, wherein The hard base is disposed on a side close to the substrate substrate; The column lens has a convex curved surface facing away from the substrate substrate.

14. The stereoscopic display substrate according to any one of claims 1 to 11, wherein The hard base is disposed on a side away from the substrate substrate, The column lens has a convex curved surface facing towards the side close to the substrate substrate.

15. The autostereoscopic display substrate of any of claims 1 to 11, wherein, Further comprising: a second dielectric layer disposed on a side of the column lens grating unit away from the substrate substrate; an encapsulation layer disposed on a side of the second dielectric layer away from the substrate substrate.

16. The stereoscopic display substrate according to any one of claims 1 to 11, wherein The material for manufacturing the columnar lens includes organic glass, polycarbonate hard material, or soft PET material. The columnar lens grating unit is manufactured according to the following method:

17. The autostereoscopic display substrate of any of claims 1 to 11, wherein, coating columnar lens forming material in the columnar lens mold; setting the hard base on the side of the columnar lens forming material away from the mold; applying pressure to the hard base to make the columnar lens forming material completely fill the columnar lens mold; solidifying, demolding, cutting, and cleaning the columnar lens forming material completely filling the columnar lens mold to form the columnar lens grating unit. comprise:

18. A stereoscopic display substrate, wherein, a substrate substrate; a first dielectric layer arranged on the side of the display unit away from the substrate substrate; A display unit is disposed on the substrate side, the display unit including a plurality of pixel units arranged in an array structure in a first direction and a second direction, the plurality of pixel units having a periodic pixel width in the first direction , the first direction and the second direction intersecting. a columnar lens grating unit arranged on the side of the first dielectric layer away from the substrate substrate, the columnar lens grating unit comprising a hard base and a plurality of columnar lenses arranged continuously in a first direction, each columnar lens having a width P; wherein the preset field of view position of the stereoscopic display substrate having the best display effect in a third direction is perpendicular to the first direction and the second direction; comprise the display substrate as claimed in any one of claims 1 to 17, or comprise the display substrate as claimed in claim 18. In the first direction, the widths P of the column lenses are equal, and the preset field position is spaced apart from a field origin in a third direction by a distance , the field origin being at an intersection of the third direction with the first direction and the second direction. The width P of each lenticule is calculated according to the preset number m of lenticules, the refractive pixel pitch y k , the original pixel pitch y o and the crosstalk limit M. the refractive pixel pitch y k a distance between a pixel unit corresponding to the kth refractive cylindrical lens and the field of view origin, k being an integer greater than 0, the refractive pixel pitch y k a difference between the refractive pixel pitch y o and an original pixel pitch y o of the column lens is less than or equal to a crosstalk limit M associated with a width of the pixel unit in a first direction, the original pixel pitch y o is a distance between a pixel unit corresponding to the kth column lens without considering refraction and the field of view origin.

19. A display device, wherein, ​

Images