WO2023221886A1

WO2023221886A1 - Display screen and display apparatus

Info

Publication number: WO2023221886A1
Application number: PCT/CN2023/093796
Authority: WO
Inventors: 刁鸿浩
Original assignee: 北京芯海视界三维科技有限公司; 视觉技术创投私人有限公司
Priority date: 2022-05-20
Filing date: 2023-05-12
Publication date: 2023-11-23
Also published as: CN115047645B; CN115047645A; TW202405521A

Abstract

The present application relates to the technical field of optics. Disclosed is a display screen. The display screen comprises a plurality of composite pixels and a grating, wherein each composite pixel comprises a plurality of rows and columns of sub-pixels; the directions of the rows and columns where the sub-pixels are located are respectively an X direction and a Y direction; the center distances between two adjacent sub-pixels in the row direction and the column direction are respectively px and py; the grating comprises a plurality of units arranged at a cycle length D in an S direction; the cycle length D is the pitch of the grating; the S direction is perpendicular to a T direction; and an included angle between the Y direction and the T direction is θ. When θ = Aω, D = i * px * cosφ or D = i * px/cosφ; and when θ = φ, D = i * px * cosω or D = i * px/cosω, where i is the number of sub-pixels comprised in each composite pixel in the row direction, i is an integer greater than or equal to 5, A is an adjustment coefficient, tanω = ±1/n * px/py, n = 3k ± 1, k is an integer greater than 1, tanφ = B * px/py, and B is an adjustment coefficient. By means of the display screen provided in the present application, Moiré patterns can be reduced, thereby improving the viewing experience. Further disclosed in the present application is a display apparatus.

Description

Display screens and display devices

Technical field

This application relates to the field of optical technology, such as display screens and display devices.

Background technique

Naked-eye 3D displays, especially naked-eye 3D displays based on the principle of parallax barrier, have been accompanied by moiré problems since their inception, which has greatly reduced the original brilliant 3D display effect, and even the naked-eye 3D display in 2D display mode. The 2D display effect is also inferior to ordinary 2D displays with the same resolution, which is also a technical bottleneck for naked-eye 3D display equipment to enter the civilian market.

Contents of the invention

In order to provide a basic understanding of some aspects of the disclosed embodiments, a simplified summary is provided below. This summary is not intended to be an extensive review, nor is it intended to identify key/important elements or delineate the scope of these embodiments, but is intended to serve as a prelude to the detailed description that follows.

Embodiments of the present disclosure provide a display screen and a display device to solve the technical problem of moiré in a naked-eye 3D display screen.

The display screen provided by the embodiment of the present disclosure includes: a plurality of composite pixels and a grating disposed on the plurality of composite pixels;

Each composite pixel in the plurality of composite pixels includes multiple rows and columns of sub-pixels. The direction of the row of the sub-pixel is the X direction, and the direction of the column of the sub-pixel is the Y direction; the center between two adjacent sub-pixels in the row direction The distance is px, and the center distance between two adjacent sub-pixels in the column direction is py,

The grating includes a plurality of units arranged along the S direction with a period length D, the period length D is the pitch of the grating, and the direction along the length of the unit is the T direction, where the S direction is perpendicular to the T direction;

The angle between the Y direction and the T direction is θ,

When θ=Aω, D=i*px*cosφ, or D=i*px/cosφ,

When θ=φ, D=i*px*cosω, or D=i*px/cosω,

Among them, i is the number of sub-pixels included in the row direction of the composite pixel, i is an integer greater than or equal to 5, A is the adjustment coefficient, tanω=±1/n*px/py, n=3k±1, k is an integer greater than 1, tanφ=B*px/py, and B is the adjustment coefficient.

In some embodiments, when the grating is a cylindrical lens grating, the cylindrical lens grating includes a plurality of cylindrical lenses arranged with a periodic length D along the S direction, the pitch of the cylindrical lens grating is D, and the direction of the axis of the cylindrical lens is the T direction. .

In some embodiments, when the grating is a slit grating, the slit grating includes a plurality of slit units arranged with a periodic length D along the S direction. The slit units include a light-shielding part and a light-transmitting part. The pitch of the slit grating is is D, and the direction extending along the length of the light-transmitting part is the T direction.

In some embodiments, A is a constant selected from [0.96-1.04].

In some embodiments, A is 1.

In some embodiments, B is a constant selected from [0.35-0.65].

In some embodiments, B is 0.5.

In some embodiments, the sub-pixel includes an oppositely arranged short side and an oppositely arranged long side, the length of the short side is shorter than the length of the long side; the extension direction of the short side of the sub-pixel is the X direction;

In a composite pixel, the sub-pixels arranged along the direction in which the short side extends have the same color.

In some embodiments, the extending direction of the long side of the sub-pixel is the Y direction;

In a composite pixel, the sub-pixels arranged along the direction in which the long side extends have different colors.

In some embodiments, a composite pixel includes three rows and i columns of sub-pixels.

In some embodiments, i*px/(3*py)=C, where C is a constant selected from [0.9-1.1], and i is any integer selected from 6, 7, 8, 9, and 10.

In some embodiments, C is 1, when i is 6, px/py=1/2, and when i is 8, px/py=3/8.

In some embodiments, when θ=Aω, D=i*px*cosφ, or D=i*px/cosφ, where A is 1, i is 6, px/py=1/2, and k is 2 , n is 5, and B is 0.5.

In some embodiments, when θ=φ, D=i*px*cosω, or D=i*px/cosω, where i is 6, px/py=1/2, B is 0.5, and k is 2, n is 5.

In some embodiments, the resolution of the display screen is M×N, the display screen includes M×N composite pixels, where M is greater than N, the X direction includes M composite pixels, and the Y direction includes N composite pixels.

A display device provided by an embodiment of the present disclosure includes the above-mentioned display screen.

The display screen and display device provided by the embodiments of the present disclosure can achieve the following technical effects:

Setting the grating of the display screen according to the method provided in this application can reduce the moiré pattern existing in the naked-eye 3D display screen to a level that is indistinguishable to human vision, thereby improving the viewing experience.

The above general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of the drawings

At least one embodiment is illustrated through the accompanying drawings corresponding thereto. These exemplary descriptions and the accompanying drawings do not constitute limitations to the embodiments. Elements with the same reference numerals in the accompanying drawings are shown as similar elements. The accompanying drawings does not constitute a proportional limitation and where:

Figure 1 is a schematic structural diagram of a display screen provided by an embodiment of the present disclosure;

Figure 2 is a schematic structural diagram of another display screen provided by an embodiment of the present disclosure;

Figure 3 is a schematic structural diagram of a slit grating provided by an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a display device provided by an embodiment of the present disclosure.

Reference signs:
10: display screen; 101: composite pixel; 102: grating; 103: unit; 104: light shielding part; 105: light transmitting part; 20: display device.

Detailed ways

In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for convenience of explanation, multiple details are provided to provide a thorough understanding of the disclosed embodiments. However, at least one embodiment may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified to simplify the drawings.

As shown in Figures 1 and 2, embodiments of the present disclosure provide a display screen 10, including: a plurality of composite pixels 101 and a grating 102 disposed on the plurality of composite pixels 101;

Each composite pixel 101 in the plurality of composite pixels 101 includes multiple rows and multiple columns of sub-pixels. The direction of the row of the sub-pixel is the X direction, and the direction of the column of the sub-pixel is the Y direction; between two adjacent sub-pixels in the row direction The center distance of is px, and the center distance between two adjacent sub-pixels in the column direction is py,

The grating 102 includes a plurality of units 103 arranged along the S direction with a period length D, the period length D is the pitch of the grating 102, and the direction along the length of the unit 103 is the T direction, where the S direction is perpendicular to the T direction;

The angle between the Y direction and the T direction is θ,

When θ=Aω, D=i*px*cosφ, or D=i*px/cosφ,

When θ=φ, D=i*px*cosω, or D=i*px/cosω,

Among them, i is the number of sub-pixels included in the row direction of the composite pixel 101, i is an integer greater than or equal to 5, A is the adjustment coefficient, tanω=±1/n*px/py, n=3k±1, k is An integer greater than 1, tanφ=B*px/py, B is the adjustment coefficient.

In some embodiments, k may be any integer selected from 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12. Optionally, based on the relationship between n and k, the value of n can be determined. Optionally, by designing the values of px and py, the angle ω can be determined.

In some embodiments, as shown in FIG. 1 , the dotted box circled by points E, A, H, and F represents a composite pixel 101, where the length of the composite pixel 101 is Lx and the width is Ly, and the display screen 10 includes multiple lines. Multiple columns of composite pixels 101 are arranged in an array. In FIG. 1 , it is exemplarily shown that the display screen 10 includes six composite pixels 101 . In actual applications, the number of composite pixels 101 included in the display screen 10 far exceeds six.

In some embodiments, each composite pixel 101 includes multiple rows and columns of sub-pixels arranged in an array. In FIG. 1 , it is exemplarily shown that the composite pixel 101 includes 3 rows and 6 columns of sub-pixels. However, in practical applications, optionally, the composite pixel 101 may include 3 rows and 5 columns of sub-pixels. Alternatively, the composite pixel 101 may include 3 rows and 8 columns of sub-pixels. Optionally, the composite pixel 101 may include 3 rows and 10 columns of sub-pixels, etc. This application does not specifically limit this, as long as the composite pixel 101 includes the number of sub-pixels (also called i, or composite) in the row direction. The number of columns of sub-pixels in pixel 101) can be an integer greater than or equal to 5.

Continuing as shown in Figure 1, in some embodiments, the sub-pixel includes a relatively short side and a relatively long side. The length of the short side is shorter than the length of the long side; the extension direction of the short side of the sub-pixel is the X direction. ; In a composite pixel, the sub-pixels arranged along the direction in which the short side extends have the same color. In some embodiments, the extending direction of the long side of the sub-pixel is the Y direction; in the composite pixel, the colors of the sub-pixels arranged along the extending direction of the long side are different. Optionally, the short side extension direction of the sub-pixels is the row direction; in the composite pixel, the sub-pixels arranged along the row direction have the same color. Optionally, the extending direction of the long side of the sub-pixel is the column direction; in the composite pixel, the colors of the sub-pixels arranged along the column direction are different. In Figure 1, optionally, in the composite pixel 101, the sub-pixel color of the first row may be red, the sub-pixel color of the second row may be green, and the sub-pixel color of the third row may be blue. Optionally, the color of the sub-pixels in the first row may be blue, the color of the sub-pixels in the second row may be green, the color of the sub-pixels in the third row may be red, etc., which are not specifically limited.

In some embodiments, in Figure 1, the direction pointed by X is the X direction, and the direction pointed by Y is the Y direction. Continuing as shown in Figure 1, in the X direction, the distance from the center of one sub-pixel to the center of another sub-pixel adjacent to it is px. In the Y-direction, the distance from the center of one sub-pixel to the center of another adjacent sub-pixel is px. The distance between the centers of adjacent sub-pixels is py.

In some embodiments, the grating 102 is disposed on the composite pixels 101 arranged in an array. As shown in Figure 1 As shown in FIG. 1 , the grating 102 includes a plurality of units 103 , and FIG. 1 exemplarily shows that the grating 102 includes two units 103 . Optionally, the pitch of the grating 102 is D, that is, the width of the unit 103 along the S direction is D, the plurality of units 103 are arranged along the S direction with a periodic length D, and the extending direction along the length of the unit 103 is the T direction, and the S direction perpendicular to the T direction.

In some embodiments, the grating 102 may include a cylindrical lens grating 102 or a slit grating 102. In FIG. 1 , the grating 102 is a cylindrical lens grating 102 as an example. Alternatively, the grating 102 may also be a slit grating 102.

In some embodiments, as shown in FIG. 1 , when the grating 102 is a cylindrical lens grating 102 , the cylindrical lens grating 102 includes a plurality of cylindrical lenses arranged with a periodic length D along the S direction, and the pitch of the cylindrical lens grating 102 is D, that is, the width of the cylindrical lens along the S direction is D, and the direction of the axis of the cylindrical lens is the T direction.

In some embodiments, as shown in FIG. 3 , when the grating 102 is a slit grating 102 , the slit grating 102 includes a plurality of slit units 103 arranged with a periodic length D along the S direction, and the slit units 103 include light shielding portions. 104 and the light-transmitting part 105, the pitch of the slit grating 102 is D, that is, the width of the slit unit 103 along the S direction is D, and the direction extending along the length of the light-transmitting part 105 is the T direction. Optionally, the widths of the light-shielding part 104 and the light-transmitting part 105 along the S direction may be the same or different, as long as the sum of the two is D.

In some embodiments, the pitch D of the grating 102 has a corresponding relationship with the angle θ. By setting the grating 102 according to such a relationship, the moiré pattern existing in the naked-eye 3D display screen 10 can be reduced to a level that is indistinguishable to human vision. degree, thus improving the viewing experience.

In some embodiments, as shown in Figure 1, the distance from point B to point C represents the length of one unit 103 of the grating 102 along the X direction, and the distance from point B to point K represents the length of one composite pixel 101 along the X direction ( That is, Lx), when θ=Aω, D=i*px*cosφ, or when θ=φ, D=i*px*cosω, the distance from point B to point C is shorter than the distance from point B to point K.

In some embodiments, as shown in Figure 2, the distance from point B to point C represents the length of one unit 103 of the grating 102 along the X direction, and the distance from point B to point K represents the length of one composite pixel 101 along the X direction ( That is, Lx), when θ=Aω, D=i*px/cosφ, or when θ=φ, D=i*px/cosω, the distance from point B to point C is longer than the distance from point B to point K.

In some embodiments, i is the number of sub-pixels included in the composite pixel 101 in the row direction, that is, i is the number of columns of sub-pixels included in the composite pixel 101, i is an integer greater than or equal to 5, optionally, i It can be any number selected from 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15. Figure 1 exemplarily shows the case where i is 6.

In some embodiments, A is a constant such that θ can be substantially equal to ω, that is, θ and ω can be approximately equal, where A is a constant selected from [0.96-1.04]. Optionally, A is a constant selected from [0.97-1.03]. Optionally, A is a constant selected from [0.98-1.02]. Optionally, A is a constant selected from [0.99-1.01]. Optionally, A is 1.

In some embodiments, B is a constant, and B is a constant selected from [0.35-0.65]. Optionally, B is a constant selected from [0.4-0.6]. Optionally, B is a constant selected from [0.45-0.55]. Optionally, B is a constant selected from [0.46-0.54]. Optionally, B is 0.5. After determining the coefficient B, the value of the angle φ can be obtained by designing the lengths of px and py.

In some embodiments, composite pixel 101 includes three rows and i columns of sub-pixels. Alternatively, i*px/(3*py)=C, where C is a constant selected from [0.9-1.1], and i is any integer selected from 6, 7, 8, 9, and 10. Optionally, the composite pixel 101 is approximately square in shape. Optionally, C is 1, and the composite pixel 101 is in the shape of a square.

In some embodiments, C is 1, when i is 6, px/py=1/2, and when i is 8, px/py=3/8. Optionally, px=20.9±0.1um. Optionally, the value of py can be determined based on the above-mentioned relationship between px and py and the value of px.

In some embodiments, when θ=Aω, D=i*px*cosφ, or D=i*px/cosφ, where A is 1, i is 6, px/py=1/2, and k is 2 , n is 5, and B is 0.5. Optionally, px=20.9um.

In some embodiments, when θ=φ, D=i*px*cosω, or D=i*px/cosω, where i is 6, px/py=1/2, B is 0.5, and k is 2, n is 5. Optionally, px=20.9um.

In some embodiments, the resolution of the display screen is M×N, and the display screen includes M×N composite pixels, where M is greater than N, the X direction includes M composite pixels, and the Y direction includes N composite pixels. pixels.

As shown in Figure 4, this application also provides a display device 20, including the display screen 10 as described above.

In some embodiments, the display device 20 may also include other components for supporting the normal operation of the display screen 10 , such as at least one of a communication interface, a frame, a control circuit, and other components.

In some embodiments, the display device 20 may be a display terminal or other device capable of displaying, such as a television, a projector, a mobile phone, a desktop computer, a tablet computer, a notebook computer, etc.

The foregoing description and drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples represent only possible variations. Unless explicitly required, individual components and features are optional and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of the disclosed embodiments includes the entire scope of the claims, and all available equivalents of the claims. When used in this application, although the terms "first,""second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, without changing the meaning of the description, a first element could be called a second element, and similarly, the second element An object can be called a first component, as long as all occurrences of "first component" are renamed consistently and all occurrences of "second component" are renamed consistently. The first element and the second element are both elements, but may not be the same element. Furthermore, the words used in this application are used only to describe the embodiments and not to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. . Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed items. In addition, when used in this application, the term "comprise" and its variations "comprises" and/or "comprising" etc. refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method or apparatus that includes that element. In this article, each embodiment may focus on its differences from other embodiments, and the same and similar parts among various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiment, then the relevant parts can be referred to the description of the method part.

Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementations should not be considered to be beyond the scope of the disclosed embodiments. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of units may only be a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or may be Integrated into another system, or some features can be ignored, or not implemented. In addition, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms. A unit described as a separate component may or may not be physically separate. A component shown as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each function in the embodiment of the present disclosure The units can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit.

In the drawings, the width, length, thickness, etc. of structures such as elements or layers may be exaggerated for clarity and description. When an element or layer or other structure is referred to as being "disposed on" (or "mounted on", "laid on", "fitted to", "coated on" or similar descriptions) another element or layer is "disposed on" or " When referring to "on", the element or layer or other structure can be directly "disposed on" or "on" the above-mentioned other element or layer, or there may be an intermediate element or layer between the above-mentioned other element or layer. The structure may even be partially embedded in another element or layer described above.

Claims

A display screen, characterized by comprising: a plurality of composite pixels and a grating disposed on the plurality of composite pixels;

Each composite pixel in the plurality of composite pixels includes multiple rows and multiple columns of sub-pixels. The direction of the row of the sub-pixel is the X direction, and the direction of the column of the sub-pixel is the Y direction; two adjacent ones in the row direction. The center distance between sub-pixels is px, and the center distance between two adjacent sub-pixels in the column direction is py.

The grating includes a plurality of units arranged along the S direction with a period length D, the period length D is the pitch of the grating, and the direction along the length of the unit is the T direction, wherein the S direction is perpendicular to the T direction. ;

The angle between the Y direction and the T direction is θ,

When θ=Aω, D=i*px*cosφ, or D=i*px/cosφ,

When θ=φ, D=i*px*cosω, or D=i*px/cosω,

Where, i is the number of sub-pixels included in the row direction of the composite pixel, i is an integer greater than or equal to 5, A is the adjustment coefficient, tanω=±1/n*px/py, n=3k±1, k is an integer greater than 1, tanφ=B*px/py, and B is the adjustment coefficient.
The display screen according to claim 1, wherein when the grating is a cylindrical lens grating, the cylindrical lens grating includes a plurality of cylindrical lenses arranged with a period length D along the S direction, and the cylindrical lens grating has The pitch is D, and the direction of the axis of the cylindrical lens is the T direction.
The display screen according to claim 1, wherein when the grating is a slit grating, the slit grating includes a plurality of slit units arranged with a periodic length D along the S direction, and the slit units It includes a light-shielding part and a light-transmitting part, the pitch of the slit grating is D, and the direction extending along the length of the light-transmitting part is the T direction.
The display screen according to claim 1, wherein A is a constant selected from [0.96-1.04].
The display screen of claim 4, wherein A is 1.
The display screen according to claim 1, wherein B is a constant selected from [0.35-0.65].
The display screen according to claim 6, wherein B is 0.5.
The display screen according to claim 1, wherein the sub-pixel includes a relatively short side and a relatively long side, and the length of the short side is shorter than the length of the long side; The short side extension direction of the pixel is the X direction;

In the composite pixel, the sub-pixels arranged along the direction in which the short side extends have the same color.
The display screen according to claim 8, wherein the extending direction of the long side of the sub-pixel is Y direction;

In the composite pixel, sub-pixels arranged along the direction in which the long side extends have different colors.
The display screen according to any one of claims 1 to 9, wherein the composite pixel includes three rows and i columns of sub-pixels.
The display screen according to claim 10, characterized in that i*px/(3*py)=C, where C is a constant selected from [0.9-1.1], and i is selected from 6, 7, 8, 9 , any integer among 10.
The display screen of claim 11, wherein C is 1, when i is 6, px/py=1/2, and when i is 8, px/py=3/8.
The display screen according to claim 12, characterized in that when θ=Aω, D=i*px*cosφ, or D=i*px/cosφ, where A is 1, i is 6, and px/py =1/2, k is 2, n is 5, and B is 0.5.
The display screen of claim 12, wherein when θ=φ, D=i*px*cosω, or D=i*px/cosω, where i is 6 and px/py=1/ 2, B is 0.5, k is 2, and n is 5.
The display screen according to claim 1, wherein the resolution of the display screen is M×N, the display screen includes M×N composite pixels, where M is greater than N, and the X direction includes M composite pixels. Pixel, the Y direction includes N composite pixels.
A display device, characterized by comprising the display screen according to any one of claims 1 to 15.