阅读说明：本技术 裸眼三维显示像素单元和设备 (Naked eye three-dimensional display pixel unit and equipment ) 是由 吴海生 唐林元 于 2018-08-22 设计创作，主要内容包括：一种裸眼三维显示像素单元和设备,该像素单元包括第一像素单元和第二像素单元；显示光源层,用于透过所述第一像素单元投射第一图像,以及透过所述第二像素单元投射第二图像；障蔽膜,包括朝向所述第一像素单元和第二像素单元弯曲的弧形柱面。上述的裸眼三维显示像素单元和设备利用障蔽膜与光线之间的角度在障蔽范围内时遮蔽第一像素单元投射第一图像或者遮蔽第二像素单元投射第二图像形成裸眼三维显示效果,由于曲面造型的障蔽膜对较大范围内的第一位置和第二位置均存在障蔽第一图像或第二图像的区域,因此三维显示具有较大的可视角度。(A naked eye three-dimensional display pixel unit and equipment are disclosed, wherein the pixel unit comprises a first pixel unit and a second pixel unit; a display light source layer for projecting a first image through the first pixel unit and projecting a second image through the second pixel unit; and a barrier film including an arc-shaped cylindrical surface bent toward the first and second pixel units. According to the naked eye three-dimensional display pixel unit and the equipment, when the angle between the barrier film and the light is in the barrier range, the first pixel unit is shielded to project the first image or the second pixel unit is shielded to project the second image to form the naked eye three-dimensional display effect, and the curved surface modeling barrier film has a large visual angle for the first position and the second position in a large range to form the region for shielding the first image or the second image, so that the three-dimensional display has a large visual angle.)

1. A naked eye three-dimensional display pixel unit is characterized by comprising:

a first pixel unit;

a second pixel unit;

a display light source layer for projecting a first image through the first pixel unit and projecting a second image through the second pixel unit; and

a barrier film including arc-shaped cylindrical surfaces facing the first pixel unit and the second pixel unit, wherein when the first position is moved, an angle between a light ray passing through the first pixel unit and facing the first position direction and the barrier film is out of a barrier range of the barrier film to project a first image to the first position through the barrier film, and an angle between a light ray passing through the second pixel unit and facing the first position direction and the barrier film is within the barrier range of the barrier film to allow the barrier film to block the second image projected to the first position; and

when the second position moves, the angle between the light rays penetrating through the first pixel units and the barrier film in the direction towards the second position is within the shielding range of the barrier film, so that the barrier film shields the first image projected to the second position, and the angle between the light rays penetrating through the second pixel units and the barrier film in the direction towards the second position is outside the shielding range of the barrier film, so that the second image is projected to the second position through the barrier film.

2. The naked eye three-dimensional display pixel unit of claim 1, wherein the barrier film comprises a first polarizing film, a wave plate film and a second polarizing film in sequence along a direction away from the first pixel unit and the second pixel unit, and the polarization direction of the first polarizing film is orthogonal to the polarization direction of the second polarizing film.

3. The naked eye three dimensional display pixel cell of claim 2, wherein the barrier film further comprises a transparent carrier base film disposed on a side of the first polarizing film proximate to the first and second pixel cells.

4. The naked eye three dimensional display pixel cell of claim 3, wherein the barrier film further comprises a transparent protective film disposed on a side of the second polarizing film distal from the first and second pixel cells.

5. The naked eye three-dimensional display pixel unit of claim 4, wherein the first bias film, the wave plate film, the second bias film and the protective film are sequentially pressed on the bearing base film.

6. The naked eye three-dimensional display pixel unit as claimed in claim 1, wherein the barrier film is a circular arc cylinder or an elliptical arc cylinder, such that when the first position or the second position is moved, the barrier film has at least one barrier region, and the angle of the barrier region to the light of the first image projected to the second position direction through the first pixel unit and the angle to the light of the second image projected to the first position direction through the second pixel unit are within the barrier range.

7. The naked eye three-dimensional display pixel unit of claim 1, wherein the display light source layer and the barrier film are respectively disposed on two sides of the first pixel unit and the second pixel unit.

8. The naked eye three dimensional display pixel cell of claim 7, wherein the display light source layer is a polarized surface light source or an unpolarized surface light source that is not orthogonal to the polarization direction of the first polarizing film.

9. The naked eye three dimensional display pixel cell of claim 6, wherein the waveplate film is an 1/2 waveplate film or two 1/4 waveplate films.

10. A naked eye three-dimensional display device, comprising a plurality of naked eye three-dimensional display pixel units according to any one of claims 1 to 9.

Technical Field

The invention belongs to the field of naked eye three-dimensional display, and particularly relates to a naked eye three-dimensional display pixel unit and equipment.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The naked eye left-right parallax three-dimensional display mainly comprises modes of liquid crystal barrier, cylindrical lenses and the like, the existing naked eye three-dimensional display has strict requirements on observation angle and observation distance, the observation range of an observer is severely limited, and the application experience of the naked eye three-dimensional display screen is influenced.

Disclosure of Invention

In view of the above, there is a need for a naked eye three-dimensional display pixel cell and apparatus, aiming to improve the viewing angle of naked eye three-dimensional display.

A naked eye three dimensional display pixel cell comprising:

a first pixel unit and a second pixel unit;

a display light source layer for projecting a first image through the first pixel unit and projecting a second image through the second pixel unit;

a barrier film which is an arc-shaped cylindrical surface facing the first pixel unit and the second pixel unit, when the first position moves, the angle between the light ray penetrating through the first pixel unit and facing the first position direction and the barrier film is out of the barrier range of the barrier film so as to project a first image to the first position through the barrier film, and the angle between the light ray penetrating through the second pixel unit and facing the first position direction and the barrier film is within the barrier range of the barrier film so that the barrier film blocks the second image projected to the first position; and

when the second position moves, the angle between the light rays penetrating through the first pixel units and the barrier film in the direction towards the second position is within the shielding range of the barrier film, so that the barrier film shields the first image projected to the second position, and the angle between the light rays penetrating through the second pixel units and the barrier film in the direction towards the second position is outside the shielding range of the barrier film, so that the second image is projected to the second position through the barrier film.

Further, the barrier film comprises a first polarizing film, a wave plate film and a second polarizing film in sequence along the direction far away from the first pixel unit and the second pixel unit, and the polarization direction of the first polarizing film is orthogonal to the polarization direction of the second polarizing film.

Further, the barrier film further includes a transparent carrier base film provided on a side of the first polarizing film adjacent to the first and second pixel units.

Further, the barrier film further comprises a transparent protective film, and the protective film is arranged on the side face, far away from the first pixel unit and the second pixel unit, of the second polarizing film.

Further, the first bias membrane, the wave plate membrane, the second bias membrane and the protective membrane are sequentially pressed on the bearing base membrane.

Further, the barrier film is an arc-shaped cylindrical surface or an elliptical arc-shaped cylindrical surface, so that when the first position or the second position moves, the barrier film has at least one barrier region, and an angle between the barrier region and a light ray which penetrates through the first pixel unit and projects a first image to the second position direction and an angle between the barrier region and a light ray which penetrates through the second pixel unit and projects a second image to the first position direction are within the barrier range.

Further, the display light source layer and the barrier film are respectively arranged on two sides of the first pixel unit and the second pixel unit.

Further, the display light source layer is a polarized surface light source or an unpolarized surface light source which is not orthogonal to the polarization direction of the first polarizing film.

Furthermore, the wave plate film is an 1/2 wave plate film or two 1/4 wave plate films.

A naked eye three-dimensional display device comprises a plurality of naked eye three-dimensional display pixel units.

Compared with the prior art, the naked eye three-dimensional display pixel unit and the equipment have the advantages that the first pixel unit is shielded to project the first image or the second pixel unit is shielded to project the second image to form the naked eye three-dimensional display effect when the angle between the barrier film and the light ray is within the barrier range, and the barrier film in the arc cylindrical shape has the corresponding barrier area for shielding the first image or the second image for the first position and the second position within a larger range, so that the three-dimensional display has a larger visual angle. Particularly, when the first position and the second position are moved, the barrier film in the shape of the arc-shaped cylindrical surface can correspondingly convert the barrier area for shielding the light of the first pixel unit or the second pixel unit, and the three-dimensional effect of three-dimensional display can still be obtained in the moving process of the first position and the second position.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a naked eye three-dimensional display pixel unit in a first embodiment.

Fig. 2 is a schematic structural view of the barrier film in the flat state in the first embodiment.

Fig. 3 is a schematic structural view of the first polarizing film in the first embodiment.

Fig. 4 is a schematic structural view of the second polarizing film in the first embodiment.

Fig. 5 is a schematic view of the barrier film in a bent state in the first embodiment.

Fig. 6A is a schematic cross-sectional view of a barrier film in a curved state in another embodiment.

Fig. 6B is a schematic cross-sectional view of a barrier film in a curved state in yet another embodiment.

Fig. 7 is an operation schematic diagram of the naked eye three-dimensional display pixel unit in fig. 1.

Fig. 8 is a schematic structural view after the first position and the second position are shifted in the first embodiment.

Fig. 9 is an operation schematic diagram of the naked eye three-dimensional display pixel unit in fig. 8.

Fig. 10 is a schematic perspective view of a naked eye three-dimensional display device in a second embodiment.

Fig. 11 is a schematic structural diagram of the naked eye three-dimensional display device in fig. 10.

Description of the main elements

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In various embodiments of the present invention, for convenience in description and not in limitation, the term "coupled" as used in the specification and claims of the present application is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Fig. 1 is a schematic structural diagram of a naked eye three-dimensional display pixel unit 1 in a first embodiment. As shown in fig. 1, the naked-eye three-dimensional display pixel unit 1 includes a display light source layer 60, a first pixel unit 40, a second pixel unit 50, and a barrier film 10.

The display light source layer 60 serves to emit light to the outside for backlighting. The first pixel unit 40 and the second pixel unit 50 may be a transmissive display panel, such as a liquid crystal panel, for displaying and refreshing an image. The light emitted from the display light source layer 60 is transmitted through the first pixel unit 40 to project a first image and transmitted through the second pixel unit 50 to project a second image. Illustratively, the position of the right eye 21 of the observer is the first position 20, and the position of the left eye 31 is the second position 30. When the angle between the light transmitted through the first pixel unit 40 to project the first image to the second position 30 and the barrier film 10 is in a barrier range, the barrier film 10 blocks the first pixel unit 40 from projecting the first image to the second position 30, and at the same time, the light transmitted through the first pixel unit 40 may project the first image to the first position 20 through the barrier film 10. In addition, when the angle between the light transmitted through the second pixel unit 50 and the barrier film 10 to project the second image to the first position 20 is in the barrier range, the barrier film 10 blocks the second pixel unit 50 from projecting the second image to the first position 20, and simultaneously, the light transmitted through the second pixel unit 50 can project the second image to the second position 30 through the barrier film 10. Therefore, the first image can be projected at the first position 20 and enter the right eye 21 of the observer only by the light passing through the first pixel unit 40, the second image can be projected at the second position 30 and enter the left eye 31 of the observer only by the second pixel unit 50, and the parallax images are provided for the left and right eyes through the directional transmission of the first image and the second image, and the parallax images are fused by the brain to enable the observer to see a stereoscopic picture.

Fig. 2 is a schematic structural view of the barrier film 10 in the first embodiment. As shown in fig. 2, the barrier film 10 includes a carrier base film 12, a first polarizing film 13, a wave plate film 14, and a second polarizing film 15 in order in a direction away from the display light source layer 60. The carrier base film 12 is made of a transparent material and is used for supporting other film layers. The first polarizing film 13 and the second polarizing film 15 may convert light into polarized light, and the wave plate film 14, which may be an 1/2 wave plate (wave plate film) film or two identical 1/4 wave plate films, is attached between the first polarizing film 13 and the second polarizing film 15. Wherein the polarization direction of the first polarization film 13 is orthogonal to the polarization direction of the second polarization film 15. In the present embodiment, as shown in fig. 3, the polarization direction of the first polarization film 13 is 45 degrees to the left. As shown in fig. 4, the polarization direction of the second polarizing film 15 is a right-direction 45-degree angle. Therefore, the polarization directions between the first and second polarization films 13 and 15 are orthogonal. When the light passes through the first polarizing film 13, it is converted into linearly polarized light. When the linearly polarized light is perpendicular to the fast or slow axis of the wave plate film 14. When the wave plate film 14 is incident, the light still becomes linearly polarized after penetrating the wave plate film 14, the polarization plane is unchanged, and the polarization direction is symmetrical to the incident time. At this time, the light cannot continue to penetrate the second polarizing film 15 because the polarization direction of the second polarizing film 15 is perpendicular to the polarization direction of the first polarizing film 13, so that the second polarizing film 15 blocks the light having the same polarization direction as the first polarizing film 13. When the linearly polarized light enters the wave plate film 14 at an angle with the fast optical axis or the slow optical axis of the wave plate film 14, the polarization plane of the light after penetrating the wave plate film 14 changes, and at this time, the polarization direction of the penetrating light and the polarization direction of the second polarization film 15 are not perpendicular, and part of the light can continue to pass through the second polarization film 15. Therefore, when light emitted from the light source of the display layer is perpendicular to the barrier film 10, the light is blocked by the barrier film 10 and the light cannot enter the eyes through the barrier film 10. If the barrier film 10 is gradually inclined, the angle of the light with respect to the normal line of the plane in which the barrier film 10 is located gradually increases, that is, the angle between the light and the barrier film 10 gradually decreases, the light transmitted through the barrier film 10 gradually increases, and thus the display light source layer 60 is seen to be gradually brighter through the barrier film 10, that is, the first image or the second image is seen to be gradually clearer. Therefore, the barrier range of the barrier film 10 is a certain range in the vicinity of zero degrees of the angle of the light incident to the barrier film 10 with the normal line of the barrier film 10.

Fig. 5 is a schematic view of the barrier film 10 in a bent state in the first embodiment. As shown in fig. 5, the barrier film 10 may be curved into an arc-shaped cylindrical surface. The barrier film 10 shown in fig. 5 has a semicircular cross section, but may have a circular arc shape having a curvature greater than 180 ° or less than 180 °, or may have an elliptical shape having a different curvature as shown in fig. 6A and 6B.

Fig. 7 is an operation schematic diagram of the naked eye three-dimensional display pixel unit 1 in fig. 1. As shown in fig. 7, taking an example that the right eye 21 of the observer is located at the first position 20 and the left eye 31 is located at the second position 30 to observe the barrier film 10, a region (i.e., the barrier region 11) within a certain range of the barrier film 10 whose line of sight faces the arc-shaped cylindrical surface blocks a part of light passing through the first pixel unit 40 or the second pixel unit 50, so that the first image or the second image cannot be projected to the eyes of the observer. That is, the barrier region 11 is opaque or has very poor transmittance for an observer, and the other region of the barrier film 10 except the barrier region 11 may transmit light through the barrier film 10 from the region of the barrier film 10 except the barrier region 11 because the angle between the light transmitted through the first pixel unit 40 or the second pixel unit 50 and the barrier film 10 is outside the barrier range, so that the first image or the second image may be projected to the eyes of the observer, that is, the observer may see the first image or the second image.

Specifically, light passing through the first pixel unit 40 travels in all directions of the barrier film 10 to project the first image. The light rays propagating towards the first position 20 are at an angle to the barrier film 10 outside the barrier range, so that the light rays passing through the first pixel unit 40 can project a first image through the barrier film 10 towards the first position 20, i.e. the right eye 21 of the observer at the first position 20 can see the first image. In the process of transmitting the light passing through the first pixel unit 40 toward the second position 30, the shielding region 11 of the shielding film 10 is located between the connecting line of the first pixel unit 40 and the second position 30, that is, when the light passing through the first pixel unit 40 propagates toward the second position 30, the angle between the light and the shielding region 11 of the shielding film 10 is within the shielding range, and at least part of the light is blocked by the shielding region 11, so that the first pixel unit 40 cannot project the first image toward the second position 30, that is, the left eye 31 of the observer located at the second position 30 cannot see the first image. Therefore, the observer can see the first image only with the right eye 21, and cannot see the first image with the left eye 31.

Similarly, light transmitted through the second pixel unit 50 travels in all directions of the barrier film 10 to project a second image. In the process of the light traveling toward the first position 20, the shielding region 11 of the shielding film 10 is located on a connecting line between the second pixel unit 50 and the first position 20, that is, when the light passing through the second pixel unit 50 travels toward the first position 20, an angle between the light and the shielding region 11 of the shielding film 10 is within a shielding range, so that at least a portion of the light is blocked by the shielding region 11, so that the second pixel unit 50 cannot project the second image toward the first position 20 through the shielding film 10, that is, the right eye 21 of the observer located at the first position 20 cannot see the second image. During the propagation of the light rays passing through the second pixel unit 50 toward the second position 30, the angle between the light rays and the barrier film 10 is out of the barrier range, and a second image can be projected toward the second position 30 through the barrier film 10, i.e., the second image can be seen by the left eye 31 of the observer at the second position 30. Therefore, the right eye 21 of the observer cannot see the second image, and the left eye 31 can see the second image.

As can be seen from the above description, the observer can see the first image only by the right eye 21 located at the first position 20, and can see the second image only by the left eye 31 located at the second position 30, so as to provide parallax images to the left eye 31 and the right eye 21, and the parallax images are merged by the brain to make the observer see a stereoscopic image.

Fig. 8 is a schematic structural view of the first embodiment after the first position 20 and the second position 30 are shifted. As shown in fig. 8, the position of the observer shifts from the position of fig. 7 to the position of fig. 8 around the circumferential direction of the barrier film 10. Due to the shape of the arc-shaped cylindrical surface of the barrier film 10, after the observer shifts the position along the circumferential direction, the barrier film 10 still has a barrier region 11 (the region where the observer faces the arc-shaped cylindrical surface) to block part of the light passing through the first pixel unit 40 or the second pixel unit 50, so that the first image or the second image cannot be projected to the eyes of the observer.

Fig. 9 is an operation schematic diagram of the naked eye three-dimensional display pixel unit 1 in fig. 8. As shown in fig. 9, when the viewing orientation of the viewer changes (i.e., the first position 20 and the second position 30 change), the position of the eye facing the cylindrical surface changes, and the shadow area of the mask film moves accordingly, so that the first image or the second image projection can still be effectively masked. Therefore, when the first position 20 is moved, the angles of the barrier regions 11 of the barrier film 10 and the light rays of the first pixel unit 40 projecting the first image to the first position 20 are within the barrier range, and at least part of the light rays are blocked by the barrier regions 11 so that the first pixel unit 40 cannot project the first image to the second position 30, that is, the left eye 31 of the observer at the second position 30 cannot see the first image. When the second position 30 moves, the angles of the barrier region 11 of the barrier film 10 and the light of the second pixel unit 50 projecting the second image to the second position 30 are within the barrier range, so at least part of the light is blocked by the barrier region 11, so that the second pixel unit 50 cannot project the second image to the first position 20 through the barrier film 10, that is, the right eye 21 of the observer at the first position 20 cannot see the second image. Therefore, when the first and second positions 20 and 30 are moved, the film barrier region 11 of the barrier film 10 is also moved, so that the stereoscopic effect of the three-dimensional display can be maintained over a wide angle range.

Fig. 10 is a schematic perspective structure diagram of a naked eye three-dimensional display device in a second embodiment, and fig. 11 is a schematic structural diagram of the naked eye three-dimensional display device in fig. 10. As shown in fig. 10 and 11, the naked eye three-dimensional display device includes a plurality of pixel units 1, and the plurality of pixel units 1 are sequentially arranged to form the naked eye three-dimensional display device. Fig. 10 and 10 show the pixel units 1 arranged in a row, however, the pixel units 1 may also be arranged in a square structure, and is not limited herein.

The pixel unit 1 includes a display light source layer 60, a first pixel unit 40, a second pixel unit 50, and a barrier film 10. The first pixel unit 40 and the second pixel unit 50 are disposed between the light source layer and the barrier film 10, and the display light source layer 60 projects a first image through the first pixel unit 40 and a second image through the second pixel unit 50. The barrier film 10 includes a carrier base film 12, a first polarizing film 13, a wave plate film 14, a second polarizing film 15, and a protective film 16 in this order in a direction away from the first pixel unit 40 and the second pixel unit 50.

When the naked eye three-dimensional display device is manufactured, the transparent material can be manufactured into a plurality of arc-shaped cylindrical surfaces (each arc-shaped cylindrical surface is a bearing base film 12 of one pixel unit 1) by using an injection molding or pressing process. Then, an arc-shaped cylindrical first polarizing film (each arc-shaped cylindrical surface of the first polarizing film is the first polarizing film 13 of one pixel unit 1) is laminated along the arc-shaped cylindrical carrier base film 12 of each pixel unit 1. And then, pressing a cylindrical wave plate film on the first layer of polarization film along the arc cylindrical surface. And finally, laminating a second layer of polarization film along the arc-shaped cylindrical surface of the wave plate film (each arc-shaped cylindrical surface of the second layer of polarization film is the second polarization film 15 of one pixel unit 1), ensuring that the polarization direction of the second layer of polarization film is perpendicular to the polarization direction of the first layer of polarization film during lamination, and finally laminating a transparent protective layer on the second layer of polarization film along the cylindrical surface to form the barrier films 10 of a plurality of pixel units 1. The display light source layer 60 may be a polarized surface light source or an unpolarized surface light source which is not orthogonal to the polarization direction of the first polarizing film 13, and is disposed on the side of the first polarizing film away from the wave plate film, and the first pixel unit 40 and the second pixel unit 50 are disposed between the first polarizing film 13 and the display light source layer 60 of each pixel unit 1. The first pixel unit 40 and the second pixel unit 50 may be located on the same plane or on different planes, and those skilled in the art may specifically set the positions of the first pixel unit 40 and the second pixel unit 50 according to the display effect.

In the several embodiments provided in the present invention, it should be understood that the disclosed system and method may be implemented in other ways. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The terms first, second, etc. are used to denote names, but not any particular order.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.