Display device and three-dimensional display system

Abstract

The utility model discloses a display device and a three-dimensional display system. The display device comprises a display panel and a phase retarder. The display panel is used for emitting ray polarized light. The phase retarder is located on the display side of the display panel and comprises a light alignment layer and a polymer liquid crystal layer. And the first alignment area and the second alignment area of the optical alignment layer respectively align the polymer liquid crystal layer along the first alignment direction and the second alignment direction. The display panel comprises a first part of pixel units and a second part of pixel units; the first part of pixel units fall into the orthographic projection of the first alignment area on the display panel, and the second part of pixel units fall into the orthographic projection of the second alignment area on the display panel, so that three-dimensional display can be realized by using elliptically polarized light or circularly polarized light with different rotation directions, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the field of display technology, in particular to a display device and a three-dimensional display system. Background Art

[0002] The reason why the human eye produces a sense of stereoscopic or three-dimensional (3D) vision when viewing real objects is that the left and right eyes view the object from slightly different angles, and the brain synthesizes a three-dimensional image. When watching a two-dimensional screen, in order to make the audience also have a three-dimensional vision, the video is recorded to imitate the human eye from two angles, and then played to the left and right eyes respectively. In order to prevent the image content received by the left and right eyes from affecting each other, a common method is to use polarized optics. The viewer wears polarized glasses, and the left and right lenses have different polarization directions. The image source also projects images from two perspectives according to these two polarization directions. At present, the two polarization states usually choose mutually perpendicular linear polarization states, and the viewing angle is narrow, which is not conducive to large-scale promotion. Utility Model Content

[0003] The utility model provides a display device and a three-dimensional display system, which are used for improving the viewing angle of three-dimensional display.

[0004] A first aspect of the present invention provides a display device, comprising:

[0005] A display panel, the display panel is used to emit linear polarized light;

[0006] A phase retarder is located on the display side of the display panel; the phase retarder includes:

[0007] The optical alignment layer comprises a first alignment region and a second alignment region; the first alignment region has a first alignment direction, and the second alignment region has a second alignment direction; the first alignment direction and the second alignment direction are perpendicular to each other;

[0008] A polymer liquid crystal layer is located on one side of the optical alignment layer; the polymer liquid crystal layer is configured as a quarter phase difference layer; the first alignment area is configured to align the liquid crystal located in the first alignment area along a first alignment direction; the second alignment area is configured to align the liquid crystal located in the second alignment area along a second alignment direction;

[0009] The display panel includes a first portion of pixel units and a second portion of pixel units; the first portion of pixel units falls within the orthographic projection of the first alignment area on the display panel, and the second portion of pixel units falls within the orthographic projection of the second alignment area on the display panel.

[0010] In the display device provided by the present invention, the optical alignment layer includes multiple first alignment areas and multiple second alignment areas; the first alignment areas and the second alignment areas both extend along the first direction, and the first alignment areas and the second alignment areas are alternately arranged along the second direction; the first direction and the second direction intersect.

[0011] In the display device provided by the present invention, the first alignment direction intersects with the first direction, and the second alignment direction intersects with the first direction.

[0012] In the display device provided by the present invention, the angle between the first alignment direction and the first direction is 45°, and the angle between the second alignment direction and the first direction is -45°;

[0013] Alternatively, the included angle between the first alignment direction and the first direction is -45°, and the included angle between the second alignment direction and the first direction is 45°.

[0014] In the display device provided by the present utility model, the display panel further comprises a plurality of light-emitting units; at least one light-emitting unit constitutes a pixel unit; the plurality of light-emitting units are arranged in columns along the first direction and in rows along the second direction;

[0015] An orthographic projection of a first alignment region on the display panel covers at least one column of light-emitting units, and an orthographic projection of a second alignment region on the display panel covers at least one column of light-emitting units.

[0016] In the display device provided by the present invention, the colors of the light-emitting units located in the same row are the same, and the colors of the light-emitting units located in the same column are not completely the same;

[0017] A pixel unit includes a plurality of light-emitting units of different colors; the plurality of light-emitting units in the same pixel unit are arranged in the same column along the first direction.

[0018] In the display device provided by the utility model, a pixel unit includes a red light emitting unit, a green light emitting unit and a blue light emitting unit adjacent to each other along a first direction;

[0019] An orthographic projection of a first alignment region on the display panel covers a column of light-emitting units, and an orthographic projection of a second alignment region on the display panel covers a column of light-emitting units.

[0020] In the display device provided by the present invention, the colors of the light-emitting units located in the same column are the same, and the colors of the light-emitting units located in the same row are not completely the same;

[0021] One pixel unit includes a plurality of light-emitting units of different colors; the plurality of light-emitting units in the same pixel unit are arranged in the same row along the second direction.

[0022] In the display device provided by the utility model, a pixel unit includes a red light emitting unit, a green light emitting unit and a blue light emitting unit adjacent to each other along the second direction;

[0023] An orthographic projection of a first alignment region on the display panel covers three columns of light-emitting units, and an orthographic projection of a second alignment region on the display panel covers three columns of light-emitting units.

[0024] In the display device provided by the utility model, the material of the photo-alignment layer is an organic polymer material with anisotropic absorption.

[0025] In the display device provided by the utility model, the material of the photo-alignment layer is polyimide.

[0026] In the display device provided by the utility model, the display panel includes a display substrate and a first linear polarizer located on the display side of the display substrate;

[0027] The angle between the first alignment direction and the polarization direction of the first linear polarizer is 45°, and the angle between the second alignment direction and the polarization direction of the first linear polarizer is -45°;

[0028] Alternatively, the angle between the first alignment direction and the polarization direction of the first linear polarizer is -45°, and the angle between the second alignment direction and the polarization direction of the first linear polarizer is 45°.

[0029] In the display device provided by the utility model, the first linear polarizer is a linear polarizer;

[0030] Alternatively, the first linear polarizer includes a light guide plate and a metal nanowire grid formed on one side of the light guide plate;

[0031] Alternatively, the first linear polarizer includes a transparent flat layer formed on the surface of the display substrate and a metal wire grid formed on a side of the transparent flat layer facing away from the display substrate.

[0032] In the display device provided by the present utility model, the display substrate is an LED direct display substrate, a Mini LED direct display substrate or a Micro LED direct display substrate;

[0033] Alternatively, the display substrate is an LCD display substrate; the LCD display substrate includes an array substrate and a color filter substrate that are relatively arranged, and a liquid crystal layer located between the array substrate and the color filter substrate; the display panel also includes: a second linear polarizer; the second linear polarizer is located on the side of the display substrate away from the first linear polarizer.

[0034] In the display device provided by the present utility model, the phase retarder also includes:

[0035] A substrate is located on a side of the photo-alignment layer facing away from the polymer liquid crystal layer;

[0036] The substrate is a glass substrate.

[0037] A second aspect of the present invention provides a three-dimensional display system, comprising any one of the above display devices and polarized glasses.

[0038] The beneficial effects of the utility model are as follows:

[0039] The utility model provides a display device and a three-dimensional display system, wherein the display device comprises: a display panel and a phase retarder. The display panel is used for emitting linear polarized light. The phase retarder is located at the display side of the display panel, and the phase retarder comprises: a photo-alignment layer; the photo-alignment layer comprises a first alignment area and a second alignment area; the first alignment area has a first alignment direction, and the second alignment area has a second alignment direction; the first alignment direction and the second alignment direction are perpendicular to each other; a polymer liquid crystal layer, located at one side of the photo-alignment layer; the polymer liquid crystal layer is configured as a quarter phase difference layer; the first alignment area is configured to orient the liquid crystal located in the first alignment area along the first alignment direction; the second alignment area is configured to orient the liquid crystal located in the second alignment area along the second alignment direction. The display panel comprises a first portion of pixel units and a second portion of pixel units; the first portion of pixel units falls within the orthographic projection of the first alignment area on the display panel, and the second portion of pixel units falls within the orthographic projection of the second alignment area on the display panel. The linearly polarized light emitted by the display panel is modulated by phase retarders with different orientation directions, so that three-dimensional display can be achieved using elliptically polarized light or circularly polarized light with different rotation directions. Compared with three-dimensional display using linearly polarized light, a larger viewing angle can be obtained, increasing the user's viewing freedom and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model will be briefly introduced below. Obviously, the drawings introduced below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 This is one of the cross-sectional structural schematic diagrams of the display device provided by an embodiment of the utility model;

[0042] Figure 2 A schematic diagram of the top view structure of the photo-alignment layer provided in an embodiment of the utility model;

[0043] Figure 3 A second schematic diagram of a cross-sectional structure of a display device provided in an embodiment of the utility model;

[0044] Figure 4 The third schematic diagram of the cross-sectional structure of the display device provided by the embodiment of the utility model;

[0045] Figure 5 This is a schematic diagram of a top view of a display device provided in an embodiment of the utility model;

[0046] Figure 6 This is a second schematic diagram of the top view structure of the display device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in conjunction with the drawings and examples below. However, the example embodiments can be implemented in various forms and should not be understood as being limited to the embodiments described herein; on the contrary, these embodiments are provided to make the utility model more comprehensive and complete, and to fully convey the concepts of the example embodiments to those skilled in the art. The same figure marks in the figures represent the same or similar structures, and their repeated descriptions will be omitted. The words expressing position and direction described in the utility model are all explained with the drawings as examples, but changes can be made as needed, and the changes made are all included in the scope of protection of the utility model. The drawings of the utility model are only used to illustrate the relative position relationship and do not represent the true proportion.

[0048] According to a first aspect of an embodiment of the utility model, a display device is provided.

[0049] Figure 1 This is one of the cross-sectional structural schematic diagrams of the display device provided by an embodiment of the utility model; Figure 2 A schematic top view of the structure of the photo-alignment layer provided in an embodiment of the utility model.

[0050] In the embodiment of the utility model, Figure 1 As shown, the display device includes: a display panel 1 and a phase retarder 2.

[0051] The display panel 1 is used to emit imaging light for image display. In the embodiment of the utility model, the imaging light emitted by the display panel 1 is linearly polarized light.

[0052] The phase retarder 2 is located at the display side of the display panel 1 . The phase retarder 2 includes: a photo-alignment layer 21 and a polymer liquid crystal layer 22 .

[0053] The photo-alignment layer 31 is used to align the liquid crystal in the polymer liquid crystal layer 22. Figure 1 and Figure 2 As shown, the optical alignment layer 31 includes a first alignment region 211 and a second alignment region 212. The first alignment region 211 has a first alignment direction D1, and the second alignment region 212 has a second alignment direction D2. The first alignment direction D1 is perpendicular to the second alignment direction D2.

[0054] The polymer liquid crystal layer 22 is located on one side of the photo-alignment layer 21. In some embodiments, Figure 1 As shown, the polymer liquid crystal layer 22 can be located on the side of the photo-alignment layer 21 away from the display panel 1. In some embodiments, the polymer liquid crystal layer 22 can also be located on the side of the photo-alignment layer 21 facing the display panel 1, which is not limited here. The polymer liquid crystal layer 22 is used to modulate the phase of the linearly polarized light emitted by the display panel 1. In the embodiment of the utility model, the polymer liquid crystal layer 22 can be configured as a quarter phase difference layer. After the linearly polarized light emitted by the display panel 1 is modulated by the polymer liquid crystal layer 22, its ordinary light (o light) and extraordinary light (e light) will produce a phase delay of π / 2 or an odd multiple thereof. When the polarization direction of the linearly polarized light emitted by the display panel 1 forms a certain angle with the orientation direction of the liquid crystal molecules, the light modulated by the polymer liquid crystal layer 22 is emitted as elliptically polarized light or circularly polarized light. In specific implementation, such as Figure 1 As shown, the first alignment zone 211 is configured to orient the liquid crystal located in the first alignment zone 211 in the polymer liquid crystal layer 22 along the first alignment direction D1, and the second alignment zone 212 is configured to orient the liquid crystal located in the second alignment zone 212 in the polymer liquid crystal layer 22 along the second alignment direction D2. Since the first alignment direction D1 is perpendicular to the second alignment direction D2, the elliptically polarized light or circularly polarized light emitted from the first alignment zone 211 and the second alignment zone 212 respectively have opposite rotation directions, for example, left-handed polarized light and right-handed polarized light, or right-handed polarized light and left-handed polarized light, respectively.

[0055] In a specific implementation, the display panel 1 includes a plurality of pixel units. One of the pixel units is used to form a pixel of a display image. The plurality of pixel units of the display panel 1 include a first portion of pixel units and a second portion of pixel units, wherein the first portion of pixel units falls within the orthographic projection of the first alignment area 211 on the display panel 1, and the second portion of pixel units is located within the orthographic projection of the second alignment area 212 on the display panel 1. Thus, the linear polarized light emitted by the first portion of pixel units after being modulated by the polymer liquid crystal layer 2 in the first alignment area 211 has a rotation direction opposite to that of the linear polarized light emitted by the second portion of pixel units after being modulated by the polymer liquid crystal layer 2 in the second alignment area 212. When the user wears polarized glasses with opposite rotation directions for viewing on the left and right eyes, a three-dimensional display effect can be achieved. In the embodiment of the utility model, the linearly polarized light emitted by the display panel is modulated by phase retarders with different orientation directions, so as to realize three-dimensional display by using elliptically polarized light or circularly polarized light with different rotation directions. Compared with three-dimensional display using linearly polarized light, a larger viewing angle can be obtained, thereby increasing the viewing freedom of the user and improving the user experience.

[0056] In the embodiment of the utility model, the material of the photo-alignment layer 21 can be a polymer material with anisotropic absorption, such as polyimide (PI for short), etc., which is not limited here. Polyimide and other polymer materials with anisotropic absorption, under the condition of polarized light irradiation, the polymer chains along the polarization direction of the irradiated light are destroyed due to the absorption of light, and the remaining polymer chains show anisotropic distribution, and the liquid crystal molecules can be arranged along the direction of the remaining polymer chains to achieve the orientation of the polymer liquid crystal. For example, when the photo-alignment layer 21 is made of polyimide material, during the photo-alignment process, the wavelength of the irradiated light can be 313nm~365nm, such as 330nm, and the energy of the irradiated light can be 20mj~2j, such as 80mj, which is not limited here. In specific implementation, the material of the photo-alignment layer 21 can also be other photosensitive materials that can realize the photo-alignment process, which is not limited here.

[0057] The polymer liquid crystal layer 22 can be made of a polymer liquid crystal (PLC) material. The polymer liquid crystal material can be cured under conditions such as heating, which is beneficial to improving the stability of the structure. In specific implementation, the polymer liquid crystal material can be coated on the surface of the photo-alignment layer 21 that has been aligned, so that the liquid crystal is oriented along the first alignment direction and the second alignment direction, respectively, and then the polymer liquid crystal material is cured by heating or the like to form the polymer liquid crystal layer 22.

[0058] Figure 3 The second schematic diagram of the cross-sectional structure of the display device provided in the embodiment of the utility model.

[0059] In some embodiments, Figure 3 As shown, the phase retarder also includes a substrate 23. The substrate 23 is located on the side of the photo-alignment layer 21 away from the polymer liquid crystal layer 22. The substrate 23 is used as a substrate for coating the material of the photo-alignment layer 21 when the photo-alignment layer 21 is manufactured. In specific implementation, the material for manufacturing the photo-alignment layer 21 can be coated on the substrate 23, for example, polyimide is coated on the substrate 23, and then the polyimide is aligned by polarized light to form the photo-alignment layer 21. The polymer liquid crystal layer 22 is formed on the side of the photo-alignment layer 21 away from the substrate 23. After the polymer liquid crystal layer 22 is cured, the substrate 23 can be retained to form a phase retarder 2 with a substrate 23, wherein the substrate 23 needs to be made of a transparent material, for example, the substrate 23 can be a transparent substrate such as a glass substrate to improve the light transmittance. In some embodiments, the substrate 23 can also be peeled off from the phase retarder 2 to form a phase retarder 2 without a substrate 23, which is not limited here.

[0060] In some embodiments, Figure 3As shown, the display panel 1 further includes a display substrate 11 and a first linear polarizer 12 located on the display side of the display substrate 11. The first linear polarizer 12 is used to convert imaging light emitted from the display substrate 11 into linearly polarized light, so that the light emitted from the display panel 1 is linearly polarized light.

[0061] In some embodiments, the angle between the first alignment direction D1 and the polarization direction of the first linear polarizer 12 can be set to 45°, and the angle between the second alignment direction D2 and the polarization direction of the first linear polarizer 12 can be set to -45°, so that the relative light emitted after being modulated by the polymer liquid crystal layer in the first alignment area is right-handed circularly polarized light, and the relative light emitted after being modulated by the polymer liquid crystal layer in the second alignment area is left-handed circularly polarized light. In some embodiments, the angle between the first alignment direction D1 and the polarization direction of the first linear polarizer 12 can be set to 45°, and the angle between the second alignment direction D2 and the polarization direction of the first linear polarizer 12 can be set to -45°, so that the relative light emitted after being modulated by the polymer liquid crystal layer in the first alignment area is right-handed circularly polarized light, and the relative light emitted after being modulated by the polymer liquid crystal layer in the second alignment area is left-handed circularly polarized light, which is not limited here. In specific implementation, the polarization direction of the first linear polarizer 12 can be taken as the standard, and the angle on the right side of the polarization direction of the first linear polarizer 12 can be positive, and the angle on the left side of the polarization direction of the first linear polarizer 12 can be negative. Alternatively, the angle on the right side of the polarization direction of the first linear polarizer 12 can be negative, and the angle on the left side of the polarization direction of the first linear polarizer 12 can be positive, and there is no limitation here.

[0062] In some embodiments, the first linear polarizer 12 may be a linear polarizer.

[0063] In some embodiments, the first linear polarizer 12 may be in the form of a metal nanowire grid fabricated on one side of the light guide plate.

[0064] In some embodiments, the first linear polarizer 12 can be in the form of a transparent flat layer coated on the surface of the display substrate 11, and then a metal nanowire grid is formed on the side of the transparent flat layer facing away from the display substrate 11, so that the first linear polarizer 12 can be fixed together with the display substrate 11 to improve the stability of the structure.

[0065] During specific implementation, the first linear polarizer 12 may also be in other forms, which are not limited here.

[0066] In some embodiments, the display substrate may be an LED direct display substrate, a Mini LED direct display substrate, or a Micro LED direct display substrate. The difference between an LED direct display substrate, a Mini LED direct display substrate, or a Micro LED direct display substrate is that the size of the light-emitting unit is different. Usually, the size of the light-emitting unit of the LED direct display substrate is larger than the size of the light-emitting unit of the Mini LED direct display substrate, and the size of the light-emitting unit of the Mini LED direct display substrate is larger than the size of the light-emitting unit of the Micro LED direct display substrate. Among them, the Micro LED direct display substrate uses a micro light emitting diode (Micro Light Emitting Diode, referred to as LED) as the light-emitting unit, which can obtain greater brightness and higher resolution, and improve the display effect.

[0067] Figure 4 The third schematic diagram of the cross-sectional structure of the display device provided in the embodiment of the utility model.

[0068] In some embodiments, the display substrate is an LCD (Liquid Crystal Display, LCD for short) display substrate. Figure 4 As shown, the LCD display substrate includes an array substrate 111 and a color filter substrate 112 that are arranged opposite to each other, and a liquid crystal layer 113 located between the array substrate 111 and the color filter substrate 112. The display panel also includes: a second linear polarizer 13. The second linear polarizer 13 is located on the side of the display substrate 11 away from the first linear polarizer 12. In specific implementation, the display device also includes a backlight module arranged on the display side away from the display panel 1, which is used to provide backlight light. For details, reference can be made to the LCD display device in the prior art, and no further description is given here.

[0069] In some embodiments, the optical alignment layer 21 includes a plurality of first alignment regions 211 and a plurality of second alignment regions 212. The first alignment regions 211 and the second alignment regions 212 both extend along a first direction Y, and the first alignment regions 211 and the second alignment regions 212 are alternately arranged along a second direction. The first direction Y intersects with the second direction X. Specifically, Figure 2 As shown, the plurality of first alignment regions 211 and the plurality of second alignment regions 212 form a plurality of strip regions that are alternately arranged. In specific implementation, the first direction Y and the second direction X may be set to be perpendicular, which is not limited here.

[0070] In some embodiments, the first alignment direction D1 may be set to intersect with the first direction Y, and the second alignment direction D2 may be set to intersect with the first direction Y. Specifically, the angle between the first alignment direction D1 and the first direction Y may be set to 45°, and the angle between the second alignment direction D2 and the first direction Y may be set to -45°; or the angle between the first alignment direction D1 and the first direction Y may be set to -45°, and the angle between the second alignment direction D2 and the first direction Y may be set to 45°, which is not limited here. In specific implementation, the first direction Y may be taken as the standard, and the angle on the right side of the first direction Y may be positive, and the angle on the left side of the first direction Y may be negative, or the angle on the right side of the first direction Y may be negative, and the angle on the left side of the first direction Y may be positive, which is not limited here. By setting the first alignment direction D1 to intersect with the first direction Y, and the second alignment direction D2 to intersect with the first direction Y, the lengths of the liquid crystal molecular chains arranged along the respective alignment directions in the first alignment area 211 and the second alignment area 212 can be balanced. For example, when the angle between the first alignment direction D1 and the first direction Y is 45°, and the angle between the second alignment direction D2 and the first direction Y is -45°, the lengths of the liquid crystal molecular chains arranged along the respective alignment directions in the first alignment area 211 and the second alignment area 212 are basically the same, thereby improving the consistency of the phase delay effect of the first alignment area 211 and the second alignment area 212.

[0071] Figure 5 This is a schematic diagram of a top view of a display device provided in an embodiment of the utility model; Figure 6 This is a second schematic diagram of the top view structure of the display device provided in an embodiment of the utility model.

[0072] In some embodiments, Figure 5 and Figure 6 As shown, the display panel 1 further includes a plurality of light-emitting units E. One light-emitting unit E serves as a sub-pixel unit, and at least one light-emitting unit E constitutes a pixel unit P. The plurality of light-emitting units E are arranged in columns along the first direction Y, and in rows along the second direction X. The orthographic projection of a first alignment region 211 on the display panel 1 covers at least one column of light-emitting units E, and the orthographic projection of a second alignment region 212 on the display panel 1 covers at least one column of light-emitting units E.

[0073] In some embodiments, Figure 5 As shown, the colors of the light-emitting units E in the same row along the second direction X are the same, and the colors of the light-emitting units E in the same column along the first direction Y are not completely the same. A pixel unit P includes a plurality of light-emitting units E of different colors. The plurality of light-emitting units E in the same pixel unit P are arranged in the same column along the first direction Y.

[0074] For example, if Figure 5As shown, a pixel unit P includes a red light-emitting unit R, a green light-emitting unit G, and a blue light-emitting unit B adjacent to each other along a first direction. The orthographic projection of a first alignment area 211 on the display panel 1 simultaneously covers at least one column of light-emitting units E, and in the same column of light-emitting units E covered by the orthographic projection of the first alignment area 211 on the display panel 1, a red light-emitting unit R, a green light-emitting unit G, and a blue light-emitting unit B adjacent to each other along the first direction Y constitute a pixel unit P, and a plurality of pixel units P are arranged in the same column of light-emitting units along the first direction Y. The second alignment area 212 is similar to the first alignment area 211, and will not be described in detail here. In specific implementation, as Figure 5 As shown, the orthographic projection of one first alignment area 211 on the display panel 1 may only cover one column of light-emitting units E, and the orthographic projection of one second alignment area 212 on the display panel 1 may only cover one column of light-emitting units E. In some embodiments, the orthographic projection of the first alignment area 211 on the display panel 1 and / or the orthographic projection of the second alignment area 212 on the display panel 1 may cover multiple columns of light-emitting units E at the same time, which is not limited here.

[0075] In some embodiments, Figure 6 As shown, the light emitting units E in the same column have the same color, and the light emitting units E in the same row have different colors. A pixel unit P includes a plurality of light emitting units E of different colors. The plurality of light emitting units E in the same pixel unit P are arranged in the same row along the second direction X.

[0076] For example, if Figure 6 As shown, a pixel unit P includes a red light-emitting unit R, a green light-emitting unit G, and a blue light-emitting unit B adjacent to each other along the second direction X. A first alignment area 211 simultaneously covers at least three columns of light-emitting units E on the display panel 1, and among the at least three columns of light-emitting units E simultaneously covered by a first alignment area 211 on the display panel 1, three adjacent columns of light-emitting units E are respectively a column composed of red light-emitting units R, a column composed of green light-emitting units G, and a column composed of blue light-emitting units B, so that along the second direction X, the three adjacent red light-emitting units R, green light-emitting units G, and blue light-emitting units B simultaneously covered by the first alignment area 211 on the display panel 1 constitute a pixel unit. In a specific implementation, as Figure 6As shown, a first alignment area 211 may be set to have an orthographic projection on the display panel 1 that simultaneously covers three columns of light-emitting units E, which are respectively composed of red light-emitting units R, green light-emitting units G, and blue light-emitting units B, so that the orthographic projection of the first alignment area 211 on the display panel 1 simultaneously covers a plurality of pixel units P arranged in a column along the first direction Y, and only covers one pixel unit P along the second direction X. In some embodiments, a first alignment area 211 may also be set to have an orthographic projection on the display panel 1 that simultaneously covers 3N columns of light-emitting units E, where N is an integer greater than 1, so that the orthographic projection of the first alignment area 211 on the display panel 1 simultaneously covers a plurality of pixel units P arranged in a column along the first direction Y, and simultaneously covers a plurality of pixel units P arranged in a row along the second direction, which is not limited here. The second alignment area 212 is set in a similar manner to the first alignment area 211, and will not be described in detail here.

[0077] The second aspect of the embodiment of the utility model further provides a three-dimensional display system, comprising a display device and polarized glasses provided by any of the above embodiments. The polarized glasses are used in conjunction with the display device so that a user can view a three-dimensional image when wearing the polarized glasses to view the display screen of the display device. For example, the display device can emit right-handed circularly polarized light in the first light orientation area and emit left-handed circularly polarized light in the second orientation area. The left eye lens (or right eye lens) of the polarized glasses can be set to transmit left-handed circularly polarized light and absorb right-handed circularly polarized light. The right eye lens (or left eye lens) of the polarized glasses can be set to transmit right-handed circularly polarized light and absorb left-handed circularly polarized light, so that a user can view a three-dimensional image when wearing the polarized glasses to view the display screen of the display device. In specific implementation, the three-dimensional display system provided by the embodiment of the utility model has the same or similar technical effects as the display device provided by any of the above embodiments, which will not be repeated here.

[0078] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0079] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A display device, characterized in that: include: A display panel, the display panel is used to emit linearly polarized light; A phase retarder, located on the display side of the display panel; The phase retarder comprises: Photo-alignment layer; The optical alignment layer comprises a first alignment area and a second alignment area; the first alignment area has a first alignment direction, and the second alignment area has a second alignment direction; the first alignment direction and the second alignment direction are perpendicular to each other; A polymer liquid crystal layer is located on one side of the optical alignment layer; the polymer liquid crystal layer is configured as a quarter phase difference layer; the first alignment area is configured to align the liquid crystal located in the first alignment area along the first alignment direction; the second alignment area is configured to align the liquid crystal located in the second alignment area along the second alignment direction; The display panel includes a first portion of pixel units and a second portion of pixel units; the first portion of pixel units falls within the orthographic projection of the first alignment area on the display panel, and the second portion of pixel units falls within the orthographic projection of the second alignment area on the display panel.

2. The display device according to claim 1, wherein: The photo-alignment layer includes a plurality of the first alignment areas and a plurality of the second alignment areas; the first alignment areas and the second alignment areas both extend along a first direction, and the first alignment areas and the second alignment areas are alternately arranged along a second direction; the first direction intersects with the second direction.

3. The display device according to claim 2, wherein: The first alignment direction intersects with the first direction, and the second alignment direction intersects with the first direction.

4. The display device according to claim 3, characterized in that The angle between the first alignment direction and the first direction is 45°, and the angle between the second alignment direction and the first direction is -45°; Alternatively, the included angle between the first alignment direction and the first direction is -45°, and the included angle between the second alignment direction and the first direction is 45°.

5. The display device according to claim 2, wherein: The display panel further includes a plurality of light emitting units; at least one of the light emitting units constitutes one of the pixel units; the plurality of light emitting units are arranged in columns along the first direction and in rows along the second direction; An orthographic projection of one of the first alignment regions on the display panel covers at least one column of the light-emitting units, and an orthographic projection of one of the second alignment regions on the display panel covers at least one column of the light-emitting units.

6. The display device according to claim 5, characterized in that The light emitting units in the same row have the same color, and the light emitting units in the same column have different colors; One pixel unit includes a plurality of light-emitting units of different colors; and a plurality of light-emitting units in the same pixel unit are arranged in the same column along the first direction.

7. The display device according to claim 6, wherein: One of the pixel units includes a red light emitting unit, a green light emitting unit and a blue light emitting unit adjacent to each other along a first direction; An orthographic projection of one of the first alignment regions on the display panel covers one column of the light-emitting units, and an orthographic projection of one of the second alignment regions on the display panel covers one column of the light-emitting units.

8. The display device according to claim 5, characterized in that The light-emitting units in the same column have the same color, and the light-emitting units in the same row have different colors; One pixel unit includes a plurality of light-emitting units of different colors; and a plurality of light-emitting units in the same pixel unit are arranged in the same row along the second direction.

9. The display device according to claim 8, wherein: One of the pixel units includes a red light emitting unit, a green light emitting unit and a blue light emitting unit adjacent to each other along the second direction; An orthographic projection of one of the first alignment regions on the display panel covers three columns of the light-emitting units, and an orthographic projection of one of the second alignment regions on the display panel covers three columns of the light-emitting units.

10. The display device according to any one of claims 1 to 9, characterized in that: The material of the photo-alignment layer is an organic polymer material with anisotropic absorption.

11. The display device according to claim 10, wherein: The material of the photo-alignment layer is polyimide.

12. The display device according to any one of claims 1 to 9, characterized in that: The display panel includes a display substrate and a first linear polarizer located on a display side of the display substrate; The angle between the first alignment direction and the polarization direction of the first linear polarizer is 45°, and the angle between the second alignment direction and the polarization direction of the first linear polarizer is -45°; Alternatively, the angle between the first alignment direction and the polarization direction of the first linear polarizer is -45°, and the angle between the second alignment direction and the polarization direction of the first linear polarizer is 45°.

13. The display device according to claim 12, wherein: The first linear polarizer is a linear polarizer; Alternatively, the first linear polarizer includes a light guide plate and a metal nanowire grid formed on one side of the light guide plate; Alternatively, the first linear polarizer includes a transparent flat layer formed on the surface of the display substrate and a metal wire grid formed on a side of the transparent flat layer facing away from the display substrate.

14. The display device according to claim 12, wherein: The display substrate is an LED direct display substrate, a Mini LED direct display substrate or a Micro LED direct display substrate; Alternatively, the display substrate is an LCD display substrate; The LCD display substrate includes an array substrate and a color film substrate that are arranged opposite to each other, and a liquid crystal layer located between the array substrate and the color film substrate; the display panel also includes: a second linear polarizer; the second linear polarizer is located on a side of the display substrate away from the first linear polarizer.

15. The display device according to any one of claims 1 to 9, characterized in that: The phase retarder also includes: A substrate, located on a side of the photo-alignment layer away from the polymer liquid crystal layer; The substrate is a glass substrate.

16. A three-dimensional display system, characterized in that: The invention comprises a display device as claimed in any one of claims 1 to 15 and polarized glasses.

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