CN113917699A - Three-dimensional display panel, control method thereof and three-dimensional display device - Google Patents

Three-dimensional display panel, control method thereof and three-dimensional display device Download PDF

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CN113917699A
CN113917699A CN202111289717.9A CN202111289717A CN113917699A CN 113917699 A CN113917699 A CN 113917699A CN 202111289717 A CN202111289717 A CN 202111289717A CN 113917699 A CN113917699 A CN 113917699A
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sub
pixel
eye image
display
pixels
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CN113917699B (en
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井杨坤
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BOE Technology Group Co Ltd
Hefei BOE Zhuoyin Technology Co Ltd
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BOE Technology Group Co Ltd
Hefei BOE Zhuoyin Technology Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type

Abstract

The invention relates to a three-dimensional display panel, a control method thereof and a three-dimensional display device. The three-dimensional display panel includes: the display panel comprises a first display substrate and a second display substrate which are overlapped; the first display substrate comprises a plurality of first sub-pixels arranged in an array, the second display substrate comprises a plurality of second sub-pixels arranged in an array, in the same time period, the first sub-pixels are used for displaying one of a left eye image and a right eye image, the second sub-pixels are used for displaying the other of the left eye image and the right eye image, and the left eye image and the right eye image are used for forming a three-dimensional image. According to the embodiment of the invention, the resolution of three-dimensional display can be improved.

Description

Three-dimensional display panel, control method thereof and three-dimensional display device
Technical Field
The invention relates to the technical field of display, in particular to a three-dimensional display panel, a control method thereof and a three-dimensional display device.
Background
In the related art, at least 2 viewpoint images are required for a viewer to see a three-dimensional (3D) effect with both eyes, that is, two different images are seen, and a brain synthesizes the two different images to obtain a 3D image.
Disclosure of Invention
The invention provides a three-dimensional display panel, a control method thereof and a three-dimensional display device, which aim to solve the defects in the related art.
According to a first aspect of embodiments of the present invention, there is provided a three-dimensional display panel including: the display device comprises a first display substrate and a second display substrate, wherein the first display substrate and the second display substrate are arranged in an overlapped mode;
the first display substrate comprises a plurality of first sub-pixels arranged in an array, the second display substrate comprises a plurality of second sub-pixels arranged in an array, in the same time period, the first sub-pixels are used for displaying one of a left eye image and a right eye image, the second sub-pixels are used for displaying the other of the left eye image and the right eye image, and the left eye image and the right eye image are used for forming a three-dimensional image.
In one embodiment, the second sub-pixels include first transparent sub-pixels and second transparent sub-pixels which are alternately arranged, the first transparent sub-pixels are used for executing a display function, the second transparent sub-pixels are used for executing a transparent function, and light emitted by the first sub-pixels is emitted through the second transparent sub-pixels in the same time period.
In one embodiment, during the same time period, light emitted by the first sub-pixels exits through a plurality of the second transparent sub-pixels.
In one embodiment, the plurality of first sub-pixels are arrayed along a first direction and a second direction, and the plurality of second sub-pixels are arrayed along the first direction and the second direction; the first direction is perpendicular to the second direction;
the first display substrate and the second display substrate are arranged along a third direction, and the third direction is respectively vertical to the first direction and the second direction;
the propagation direction of light emitted by the ith first sub-pixel in the first direction and emitted by the ith second sub-pixel in the first direction is
Figure BDA0003334477200000021
Wherein, thetar，xThe light emitted by the ith first sub-pixel in the first direction is incident on the first sub-pixel(x) a propagation direction of light emitted from the r-th sub-pixel in the first directionr，i-xph，i) Is the relative distance, x, in the first direction between the r-th sub-pixel in the first direction and the i-th sub-pixel in the first directionr，iIs the position of the r-th sub-pixel in the first direction, xph，iD is the distance between the first display substrate and the second display substrate in the third direction;
the propagation direction of light emitted by the jth first sub-pixel in the second direction and emitted by the ith second sub-pixel in the second direction is
Figure BDA0003334477200000022
Wherein, thetar，yThe propagation direction of light emitted by the jth first sub-pixel in the second direction and emitted by the r-th second sub-pixel in the second direction (y)r，j-yph，j) Is the relative distance, y, in the second direction between the r-th sub-pixel in the second direction and the j-th first sub-pixel in the second directionr，jIs the position of the r-th sub-pixel in the second direction, yph，jIs the position of the jth first sub-pixel in the second direction.
In one embodiment, the three-dimensional display panel further includes a light modulation layer located between the first display substrate and the second display substrate, and the light modulation layer is configured to modulate a propagation direction of light emitted by the first sub-pixel, so that the light emitted by the first sub-pixel exits through the second transparent sub-pixel.
In one embodiment, the dimming layer is a fresnel lens.
In one embodiment, the dimming layer comprises a lens film.
In one embodiment, the lens film includes a plurality of lens units, the lens units are arranged in one-to-one correspondence with the first sub-pixels, each lens unit includes a groove, and the first sub-pixels are located in the grooves.
In one embodiment, the lens unit includes a first lens, a second lens and a third lens, the second lens and the third lens being located at both sides of the first lens;
light emitted by the first sub-pixel within a first angular range is transmitted through the first lens, light emitted by the first sub-pixel within a second angular range is transmitted through the second lens, light emitted by the first sub-pixel within a third angular range is transmitted through the third lens, and the first angular range is between the second angular range and the third angular range.
In one embodiment, the dimming layer further comprises a prism film between the lens film and the second display substrate.
In one embodiment, the prism film includes a plurality of prisms disposed in one-to-one correspondence with the plurality of lens units; each prism comprises a first surface, a second surface, a third surface, a fourth surface, a fifth surface and a sixth surface;
the first surface and the second surface are planes perpendicular to the third direction, the first surface faces the first display substrate, and the second surface faces the second display substrate;
the third surface and the fourth surface are positioned on two sides of the first surface and face the first display substrate, a first included angle is formed between the third surface and the first surface, and a first included angle is formed between the fourth surface and the first surface;
the fifth surface and the sixth surface are positioned on two sides of the second surface and face the second display substrate, a second included angle is formed between the fifth surface and the second surface, and the second included angle is formed between the sixth surface and the second surface;
the first surface, the third surface, the fifth surface, the second surface, the sixth surface, and the fourth surface are connected in sequence;
the light emitted by the first sub-pixel and positioned in a first angle range is transmitted through the first lens and then sequentially transmitted through the first surface and the second surface;
the light emitted by the first sub-pixel and located in a second angle range is transmitted through the second lens and then sequentially transmitted through the third surface and the fifth surface;
and the light emitted by the first sub-pixel and positioned in a third angle range is transmitted through the third lens and then sequentially transmitted through the fourth surface and the sixth surface.
In one embodiment, the thickness of the prism is the distance between the first surface and the second surface; a first length of the first surface in the first direction is the same as a first length of the second surface in the second direction, a second length of the second surface in the first direction is the same as a second length of the first surface in the second direction, and the first length is the same as the second length;
the thickness of the prism, the refractive index of the prism, the lower side angle of the prism, the upper side angle of the prism, the second length, the lower layer prism exit angle and the upper layer prism exit angle satisfy the following relational expression:
L＝2*H1*tan(γ/2)；
sin(γ+α1)＝n*sin(β1)；
sin(α2)＝n*sin(β2)；
β1+β2＝α1+α2；
wherein L is the second length, H1 is the thickness of the prism, γ is the angular width of a first angular range, α 1 is the lower side angle of the prism, α 1 is complementary to the first included angle, α 2 is the upper side angle of the prism, α 2 is complementary to the second included angle, β 1 is the exit angle of the lower prism, the exit angle of the lower prism is the exit angle of the light emitted by the first sub-pixel from the third surface, β 2 is the exit angle of the upper prism, the exit angle of the upper prism is the exit angle of the light emitted by the first sub-pixel from the fifth surface, and n is the refractive index of the prism.
According to a second aspect of embodiments of the present invention, there is provided a three-dimensional display device including: the three-dimensional display panel is provided.
According to a third aspect of the embodiments of the present invention, there is provided a control method of a three-dimensional display panel, applied to the three-dimensional display panel, the method including:
and in the same time period, controlling the first sub-pixel to display one of a left-eye image and a right-eye image, and controlling the second sub-pixel to display the other of the left-eye image and the right-eye image, wherein the left-eye image and the right-eye image are used for forming a three-dimensional image.
In one embodiment, the second sub-pixels comprise first transparent sub-pixels and second transparent sub-pixels which are alternately arranged;
the controlling the second sub-pixel to display the other of the left-eye image and the right-eye image includes:
and in the same time period, controlling the first transparent sub-pixels to execute a display function and controlling the second transparent sub-pixels to execute a transparent function, wherein light emitted by the first sub-pixels is emitted through the second transparent sub-pixels.
In one embodiment, the method for controlling a three-dimensional display panel further includes:
and in the display time periods of two adjacent frames, in the display time period of the previous frame, controlling the first sub-pixel to display the left eye image and controlling the second sub-pixel to display the right eye image, and in the display time period of the next frame, controlling the first sub-pixel to display the right eye image and controlling the second sub-pixel to display the left eye image.
According to the above embodiments, the three-dimensional display panel includes the first display substrate and the second display substrate, the first display substrate and the second display substrate are stacked, the first display substrate includes a plurality of first sub-pixels arranged in an array, the second display substrate includes a plurality of second sub-pixels arranged in an array, in the same time period, the first sub-pixels are used for displaying one of the left-eye image and the right-eye image, the second sub-pixels are used for displaying the other of the left-eye image and the right-eye image, and the left-eye image and the right-eye image are used for forming the three-dimensional image. In the related art, one of the left-eye image and the right-eye image is displayed in a previous period and the other of the left-eye image and the right-eye image is displayed in a subsequent period of two adjacent periods using the same display panel. Compared with the related art, the technical scheme provided by the embodiment has the advantage that the three-dimensional display panel simultaneously displays the left eye image and the right eye image in the same time period, so that the resolution of three-dimensional display can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a three-dimensional display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an optical path of a three-dimensional display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram illustrating another three-dimensional display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram illustrating another three-dimensional display panel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram illustrating another three-dimensional display panel according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram illustrating another three-dimensional display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram illustrating another three-dimensional display panel according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The embodiment of the invention provides a three-dimensional display panel. The three-dimensional display panel, as shown in fig. 1, includes: the first display substrate CELL1 and the second display substrate CELL2, and the first display substrate CELL1 and the second display substrate CELL2 are stacked.
The first display substrate CELL1 includes a plurality of first sub-pixels 11 arranged in an array, and the second display substrate CELL2 includes a plurality of second sub-pixels 12 arranged in an array, wherein during a same period of time, the first sub-pixels 11 are used for displaying one of a left-eye image and a right-eye image, the second sub-pixels 12 are used for displaying the other of the left-eye image and the right-eye image, and the left-eye image and the right-eye image are used for forming a three-dimensional image.
In this embodiment, the three-dimensional display panel includes a first display substrate and a second display substrate, the first display substrate and the second display substrate are stacked, the first display substrate includes a plurality of first sub-pixels arranged in an array, the second display substrate includes a plurality of second sub-pixels arranged in an array, in the same time period, the first sub-pixels are used for displaying one of a left-eye image and a right-eye image, the second sub-pixels are used for displaying the other of the left-eye image and the right-eye image, and the left-eye image and the right-eye image are used for forming a three-dimensional image. In the related art, one of the left-eye image and the right-eye image is displayed in a previous period and the other of the left-eye image and the right-eye image is displayed in a subsequent period of two adjacent periods using the same display panel. Compared with the related art, the technical scheme provided by the embodiment has the advantage that the three-dimensional display panel simultaneously displays the left eye image and the right eye image in the same time period, so that the resolution of three-dimensional display can be improved.
The three-dimensional display panel provided by the embodiment of the invention is briefly described above, and the three-dimensional display panel provided by the embodiment of the invention is described in detail below.
An embodiment of the present invention further provides a three-dimensional display panel, as shown in fig. 1, including: the first display substrate CELL1 and the second display substrate CELL2, and the first display substrate CELL1 and the second display substrate CELL2 are stacked along the third direction z. The third direction z is a direction from the first display substrate CELL1 to the second display substrate CELL 2. The first display substrate CELL1 is far from the viewer, and the second display substrate CELL2 is near to the viewer.
The CELL1 may be any one of an OLED display substrate, a QLED (Quantum Dot Light Emitting Diodes) display substrate, a MiniLED display substrate, and an LCD display substrate, and the CELL2 may be any one of an OLED display substrate, a QLED display substrate, a MiniLED display substrate, and an LCD display substrate. For example, CELL1 and CELL2 may be both OLED display substrates, or CELL1 and CELL2 may be both QLED display substrates, or CELL1 and CELL2 may be both MiniLED display substrates, or CELL1 and CELL2 may be both LCD display substrates, or CELL1 may be an OLED display substrate, and CELL2 may be a QLED display substrate, but is not limited thereto. In the present embodiment, CELL1 and CELL2 are both OLED display substrates for illustration.
In the present embodiment, the organic light emitting layer in the OLED display substrate may be prepared by a printing process, but is not limited thereto. The organic light-emitting layer is prepared by adopting a printing process, so that the process can be simplified, and the production efficiency can be improved.
In the present embodiment, as shown in fig. 1, the first display substrate CELL1 includes a plurality of first sub-pixels 11 arranged in an array. The plurality of first sub-pixels 11 are arranged in an array along a first direction and a second direction, the first direction is perpendicular to the second direction, and the third direction z is perpendicular to the first direction and the second direction respectively.
In the present embodiment, as shown in fig. 1, the second display substrate CELL2 includes a plurality of second sub-pixels 12 arranged in an array. The plurality of second sub-pixels 12 are arranged in an array along the first direction and the second direction.
In the same time period, the first sub-pixel 11 is used for displaying one of the left-eye image and the right-eye image, and the second sub-pixel 12 is used for displaying the other of the left-eye image and the right-eye image, and there is a difference between the left-eye image and the right-eye image. For example, the first subpixel 11 is used to display a right eye image, and the second subpixel 12 is used to display a left eye image. When the left EYE _ L of the observer receives the left EYE image and the right EYE _ R receives the right EYE image, the brain of the observer synthesizes the two different images to obtain a three-dimensional image.
In the present embodiment, as shown in fig. 1, the first sub-pixel 11 includes a left-eye sub-pixel 111 and a right-eye sub-pixel 112 that are alternately arranged. The left-eye sub-pixel 111 is used for displaying a left-eye image, and the right-eye sub-pixel 112 is used for displaying a right-eye image. In the display period of the same frame, when the left-eye subpixel 111 is used for displaying the left-eye image, the right-eye subpixel 112 is not used for displaying the right-eye image and may not be operated, or when the right-eye subpixel 112 is used for displaying the right-eye image, the left-eye subpixel 111 is not used for displaying the left-eye image and may not be operated.
In the present embodiment, as shown in fig. 1, the second sub-pixel 12 includes a first transparent sub-pixel 121 and a second transparent sub-pixel 122 alternately arranged. Both the first transparent sub-pixel 121 and the second transparent sub-pixel 122 can perform a transparent function and a display function. Both the first transparent sub-pixel 121 and the second transparent sub-pixel 122 can be switched between the transparent function and the display function. For convenience of description, the second sub-pixel 12 performing the display function is referred to as a first transparent sub-pixel, and the second sub-pixel 12 performing the transparent function is referred to as a second transparent sub-pixel.
In the present embodiment, in the display periods of two adjacent frames, in the display period of the previous frame, the first display substrate CELL1 displays the right-EYE image, that is, when the right-EYE subpixel 112 is used for displaying the right-EYE image and the left-EYE subpixel 111 is not used for displaying the left-EYE image, the first transparent subpixel 121 is used for performing the display function and is used for displaying the left-EYE image, and the light emitted by the first transparent subpixel 121 enters the left-EYE _ L of the observer. Meanwhile, when the first transparent subpixel 121 is used for performing a display function, the light emitted from the right-EYE subpixel 112 may also be blocked, and the light emitted from the right-EYE subpixel 112 may be prevented from entering the left EYE _ L of the observer. The second transparent sub-pixel 122 is used for performing a transparent function, and light emitted by the right-EYE sub-pixel 112 exits through the second transparent sub-pixel 122 and enters the right EYE _ R of the observer.
In the present embodiment, in the display periods of two adjacent frames and in the display period of the next frame, the first display substrate CELL1 displays the left-EYE image, that is, the left-EYE sub-pixel 111 displays the left-EYE image, the right-EYE sub-pixel 112 does not display the right-EYE image, the first transparent sub-pixel 121 is used for performing the display function and is used for displaying the right-EYE image, and the light emitted by the first transparent sub-pixel 121 enters the right EYE _ R of the observer. Meanwhile, when the first transparent subpixel 121 is used for performing a display function, the light emitted from the left-EYE subpixel 111 may also be blocked, and the light emitted from the left-EYE subpixel 111 is prevented from entering the right EYE _ R of the observer. The second transparent sub-pixel 122 is used for performing a transparent function, and light emitted by the left-EYE sub-pixel 111 exits through the second transparent sub-pixel 122 and enters the left EYE _ L of the observer.
In the display time periods of two adjacent frames, the observer can observe the three-dimensional image. Here, the position of the first transparent subpixel 121 in the display period of the previous frame may be different from that of the first transparent subpixel 121 in the display period of the subsequent frame.
In this embodiment, the frame frequency of the first display substrate CELL1 is 60Hz, and the frame frequency of the second display substrate CELL2 is 60 Hz.
In this embodiment, during the same period of time, the light emitted by the same first sub-pixel 11 can exit through a plurality of second transparent sub-pixels. That is, when the first display substrate CELL1 displays the right-eye image, the observer may observe the right-eye image at a different position, and when the first display substrate CELL1 displays the left-eye image, the observer may observe the left-eye image at a different position. Therefore, when the viewing angle of the observer is continuously changed, the observer can feel a continuous three-dimensional display effect.
In the present embodiment, as shown in fig. 2, the ith first subpixel P in the first direction xiThe emitted light is passed through an r-th second sub-pixel Q in the first direction xrThe emitted light Lr has a propagation direction of
Figure BDA0003334477200000091
Wherein the r-th second sub-pixel Q in the first direction xrPerforming a transparent function, thetar，xIs the ith first sub-pixel P in the first direction xiThe emitted light passes through the r-th second sub-pixel Q in the first directionrPropagation direction of emitted light Lr, (x)r，i-xph，i) Is the r-th second sub-pixel Q in the first direction xrAnd the ith first sub-pixel P in the first direction xiRelative distance in first direction, xr，iIs the r-th second sub-pixel Q in the first direction xrPosition in a first direction x, xph，iIs the ith first sub-pixel P in the first direction xiIn the first direction x, d is a distance between the first display substrate CELL1 and the second display substrate CELL2 in the third direction z.
In the present embodiment, the ith first subpixel P in the first direction xiThe emitted light is passed through an r-th second sub-pixel Q in the first direction xrThe outgoing light Lr may enter the right EYE _ R of the observer. Of course, when the second display substrate CELL2 performs the transparent function, the ith first sub-pixel P in the first direction xiThe emitted light is transmitted through the other second sub-pixels on the second display substrate CELL2, and the light L1 transmitted through the other second sub-pixels may enter the left EYE _ L of the observer. For example, the ith first subpixel P in the first direction xiThe emitted light is transmitted through the i-1 th second sub-pixel on the second display substrate CELL 2. For realizing three-dimensional display, when the ith first sub-pixel P in the first direction x is needediThe emitted light is passed through an r-th second sub-pixel Q in the first direction xrWhen the emergent light Lr enters the right EYE EYE _ R of the observer, the R-th second sub-pixel Q in the first direction x can be controlledrAnd executing a transparent function, controlling the (i-1) th second sub-pixel to execute a display function, and displaying the left-eye image.
Similarly, the propagation direction of light emitted by the jth first sub-pixel in the second direction y and emitted by the r second sub-pixel in the second direction is
Figure BDA0003334477200000101
Wherein the r-th second sub-pixel in the second direction y performs a transparent function, θr，yIs the propagation direction of light emitted by the jth first sub-pixel in the second direction y and emitted by the r second sub-pixel in the second direction y (y)r，j-yph，j) Is the relative distance, y, between the r-th second sub-pixel in the second direction and the j-th first sub-pixel in the second directionr，jIs the position of the r-th second sub-pixel in the second direction, yph，jIs the position of the jth first sub-pixel in the second direction.
In this embodiment, as shown in fig. 3, the three-dimensional display panel further includes a light modulation layer 31, the light modulation layer 31 is located between the first display substrate CELL1 and the second display substrate CELL2, and the light modulation layer 31 is configured to modulate a propagation direction of light emitted by the first sub-pixel 11, so that the light emitted by the first sub-pixel 11 exits through the second transparent sub-pixel 122.
In the present embodiment, as shown in fig. 3, the light adjusting layer 31 includes a lens film 311 and a prism film 312. The lens film 311 and the prism film 312 are stacked, and the lens film 311 may be disposed on the first display substrate CELL1, and the prism film 312 may be disposed between the lens film 311 and the second display substrate CELL 2.
In the present embodiment, as shown in fig. 4, the lens film 311 includes a plurality of lens units 3111, the plurality of lens units 3111 are disposed in one-to-one correspondence with the plurality of first sub-pixels 11, each lens unit 3111 includes a groove HOLE, and the first sub-pixels 11 are located in the grooves HOLE.
In the present embodiment, as shown in fig. 5, the Lens unit 3111 includes a first Lens1, a second Lens2 and a third Lens3, and the second Lens2 and the third Lens3 are located at two sides of the first Lens 1.
Light emitted by the first sub-pixel 11 within the first angular range a1 is transmitted through the first Lens1, light emitted by the first sub-pixel 11 within the second angular range a2 is transmitted through the second Lens2, light emitted by the first sub-pixel 11 within the third angular range A3 is transmitted through the third Lens3, and the first angular range a1 is between the second angular range a2 and the third angular range A3.
In the present embodiment, the material of the lens film 311 is PMMA (polymethyl methacrylate). The total reflection angle of the lens film 311 is 42.15 °, light emitted from the first sub-pixel 11 with an incident angle larger than 42.15 ° cannot enter the lens film 311, and light emitted from the first sub-pixel 11 with an incident angle smaller than the total reflection angle can enter the lens film 311 and be refracted.
In this embodiment, the first angle range A1 is-14 to-14, the second angle range A2 is-42 to-14, and the third angle range A3 is 14 to 42.
In the present embodiment, light emitted from the first sub-pixel 11 and having an incident angle in the first angle range a1 is transmitted through the first Lens1, light emitted from the first sub-pixel 11 and having an incident angle in the second angle range a2 is transmitted through the second Lens2, and light emitted from the first sub-pixel 11 and having an incident angle in the third angle range A3 is transmitted through the third Lens 3.
In the present embodiment, each of the first Lens1, the second Lens2, and the third Lens3 has a radius R, a chord height H2, a focal length F, a refractive index n, a depth of the groove HOLE D, and the radius, the chord height, the focal length, the refractive index, and the depth of the groove HOLE satisfy the following relations:
R＝F*(n-1)；
D＝F-H2。
in the present embodiment, as shown in fig. 4, the prism film 312 includes a plurality of prisms 3121, and the plurality of prisms 3121 are disposed in one-to-one correspondence with the plurality of lens units 3111. The material of the prism film 312 is PMMA.
In the present embodiment, as shown in fig. 6, each prism 3121 includes a first surface F1, a second surface F2, a third surface F3, a fourth surface F4, a fifth surface F5 and a sixth surface F6.
In the present embodiment, as shown in fig. 6, the first surface F1 and the second surface F2 are planes perpendicular to the third direction z, the first surface F1 faces the first display substrate CELL1, and the second surface F2 faces the second display substrate CELL 2.
In the embodiment, as shown in fig. 6, the third surface F3 and the fourth surface F4 are located at two sides of the first surface F1 and face the first display substrate CELL1, the third surface F3 and the first surface F1 form a first included angle θ 1, and the fourth surface F4 and the first surface F1 form a first included angle θ 1. The first included angle θ 1 is an obtuse angle.
In the embodiment, as shown in fig. 6, the fifth surface F5 and the sixth surface F6 are located at two sides of the second surface F2 and face the second display substrate CELL2, the fifth surface F5 and the second surface F2 form a second included angle θ 2, and the sixth surface F6 and the second surface F2 form a second included angle θ 2. The second included angle θ 2 is an obtuse angle.
In the present embodiment, as shown in fig. 6, the first surface F1, the third surface F3, the fifth surface F5, the second surface F2, the sixth surface F6, and the fourth surface F4 are sequentially connected.
In the present embodiment, as shown in fig. 6, the light emitted by the first sub-pixel 11 within the first angle range a1 passes through the first Lens1 and then sequentially passes through the first surface F1 and the second surface F2.
In the present embodiment, as shown in fig. 6, the light emitted by the first sub-pixel 11 within the second angle range a2 passes through the second Lens2 and then sequentially passes through the third surface F3 and the fifth surface F5.
In the present embodiment, as shown in fig. 6, the light emitted by the first sub-pixel 11 within the third angular range a3 passes through the third Lens3 and then sequentially passes through the fourth surface F4 and the sixth surface F6.
In the present embodiment, as shown in fig. 6, the thickness of the prism 3121 is the distance H1 between the first surface F1 and the second surface F2; the first length of the first surface F1 in the first direction x is the same as the first length of the second surface F2 in the second direction y, and the second length of the first surface F2 in the first direction x is the same as the second length of the second surface F3578 in the second direction y. The chord length of the arc surface of each of the first Lens1, the second Lens2, and the third Lens3 is the same as the second length L.
In the present embodiment, as shown in fig. 6, the thickness H1 of the prism 3121, the refractive index of the prism 3121, the lower angle α 1 of the prism, the upper angle α 2 of the prism, the second length L, the lower layer prism exit angle β 1, and the upper layer prism exit angle β 2 satisfy the following relationship:
L＝2*H1*tan(γ/2)；
sin(γ+α1)＝n*sin(β1)；
sin(α2)＝n*sin(β2)；
β1+β2＝α1+α2；
where L is the second length, H1 is the thickness of the prism, γ is the angular width of the first angular range, γ is equal to the angle ω between the light incident on the prism and the third direction z, e.g. 28 °, α 1 is the lower angle of the prism, α 1 is complementary to the first angle θ 1, α 2 is the upper angle of the prism, α 2 is complementary to the second angle θ 2, β 1 is the exit angle of the lower prism, β 2 is the exit angle of the light emitted from the first sub-pixel 11 exiting from the third surface F3, β 2 is the exit angle of the upper prism, n is the refractive index of the prism, and the exit angle of the upper prism is the exit angle of the light emitted from the first sub-pixel 11 exiting from the fifth surface F5.
In this embodiment, from the above relation, the relation between α 1 and α 2 can be obtained, and the angle of one of α 1 and α 2 is assigned, that is, the angle of the other can be obtained.
In the embodiment, the light adjusting layer 31 includes the lens film 311 and the prism film 312, so that the distance between the first display substrate CELL1 and the second display substrate CELL2 can be reduced, and the thickness of the three-dimensional display panel can be reduced.
In the present embodiment, the example that the light adjusting layer 31 includes the lens film 311 and the prism film 312 is taken as an example. In other embodiments, the dimming layer 31 may include the lens film 311 instead of the prism film 312, and may also reduce the distance between the first display substrate CELL1 and the second display substrate CELL2, thereby reducing the thickness of the three-dimensional display panel. Also, crosstalk between the left-eye image and the right-eye image can be reduced.
In other embodiments, the light modulation layer 31 may also be a fresnel lens. The Fresnel lens is adopted to modulate the propagation direction of the light emitted by the first sub-pixel, so that the visual angle of the first display substrate can be improved, and further, the visual angle of the three-dimensional display panel can be improved.
The embodiment of the invention also provides a three-dimensional display panel. In the embodiment, the first display substrate CELL1 and the second display substrate CELL2 can be both LCD display substrates.
In one embodiment, the first display substrate CELL1 may be a liquid crystal display substrate adopting Advanced Super Dimension switching (HADS) mode, which may improve the viewing angle of the three-dimensional display panel.
In this embodiment, as shown in fig. 7, the first display substrate CELL1 includes a first light guide plate (not shown), a first left light source Bl1, a first right light source Br1, a first liquid crystal layer (not shown), and a first light modulation layer (not shown), the first light guide plate, the first liquid crystal layer, and the first light modulation layer are stacked, and the first left light source Bl1 and the first right light source Br1 are respectively located at two sides of the first light guide plate. The first dimming layer is used for modulating the propagation direction of light emitted from the first display substrate CELL1 for directional display.
In the present embodiment, as shown in fig. 7, the second display substrate CELL2 includes a second light guide plate (not shown), a second left light source Bl2, a second right light source Br1, a second liquid crystal layer (not shown), and a second light modulation layer (not shown), wherein the second light guide plate, the second liquid crystal layer, and the second light modulation layer are stacked, and the second left light source Bl2 and the second right light source Br2 are respectively located at two sides of the second light guide plate. The second dimming layer is used to modulate the propagation direction of light emitted from the second display substrate CELL2 for directional display.
In the present embodiment, as shown in fig. 7, in the display periods of two adjacent frames, in the display period of the previous frame, the first left light source Bl1 of the first display substrate CELL1 is turned on, the first right light source Br1 is turned off, the first display substrate CELL1 displays the left eye image, and the light emitted by the first left light source Bl1 enters the left eye of the observer through the first light guide plate, the first liquid crystal layer, the first dimming layer, and the second display substrate CELL 2. Meanwhile, the second right light source Br1 of the second display substrate CELL2 is on, the second left light source Bl2 is off, the second display substrate CELL2 displays a right-eye image, and light emitted by the second right light source Br1 enters the right eye of the observer through the second light guide plate, the second liquid crystal layer and the second dimming layer. The viewer can view a three-dimensional image.
In the display time periods of two adjacent frames and in the display time period of the next frame, the first left light source Bl1 of the first display substrate CELL1 is turned off, the first right light source Br1 is turned on, the first display substrate CELL1 displays a right image, and light emitted by the first right light source Br1 enters the right eye of the observer through the first light guide plate, the first liquid crystal layer, the first dimming layer and the second display substrate CELL 2. Meanwhile, the second right light source Br1 of the second display substrate CELL2 is turned off, the second left light source Bl2 is turned on, the second display substrate CELL2 displays the left eye image, and light emitted by the second left light source Bl2 enters the left eye of the observer through the second light guide plate, the second liquid crystal layer and the second dimming layer. The viewer can view a three-dimensional image.
In this embodiment, the scanning frequency (frame frequency) of the three-dimensional display panel is 120Hz, the frame frequency of the first display substrate CELL1 is 60Hz, and the frame frequency of the second display substrate CELL2 is 60Hz, so that crosstalk between the left-eye image and the right-eye image is avoided. Each of the first left light source Bl1, the first right light source Br1, the second left light source Bl2, and the second right light source Br2 is turned on 60 times per second and turned off 60 times per second. The observer can continuously watch the three-dimensional image.
In this way, a 3D display effect can be achieved through the interlaced display of the three-dimensional display panel.
In this embodiment, the first dimming layer is a fresnel lens. The first display substrate CELL1 can perform bidirectional display by using Fresnel lenses, and the second display substrate CELL2 can be equivalent to a grating, so that a 3D display effect can be realized by double-layer display, and when the first display substrate CELL1 and the second display substrate CELL2 are synchronously displayed, a 2D display effect can be realized.
In the embodiment, the CELL2 can also realize gray scale display, thereby realizing three-dimensional gray scale display, and can be applied to high-precision black and white or color display films such as medical 3D chest films and CT results, and also can be applied to remote visual medical treatment, simulated medical treatment, and the like.
The embodiment of the invention also provides a three-dimensional display device which comprises a display module and the three-dimensional display panel of any one of the embodiments.
The embodiment of the invention also provides a control method of the three-dimensional display panel, which is applied to the three-dimensional display panel.
In this embodiment, in the same time period, the first sub-pixel is controlled to display one of the left-eye image and the right-eye image, and the second sub-pixel is controlled to display the other of the left-eye image and the right-eye image, where the left-eye image and the right-eye image are used to form a three-dimensional image.
In this embodiment, in the same time period, the first transparent sub-pixel may be controlled to perform a display function, and the second transparent sub-pixel may be controlled to perform a transparent function, so that light emitted by the first sub-pixel is emitted through the second transparent sub-pixel.
In this embodiment, in the display time periods of two adjacent frames, in the display time period of the previous frame, the first sub-pixel is controlled to display the left eye image, and the second sub-pixel is controlled to display the right eye image, and in the display time period of the next frame, the first sub-pixel is controlled to display the right eye image, and the second sub-pixel is controlled to display the left eye image. That is, during the display period of the previous frame, the first display substrate is controlled to display the left eye image, part of the second sub-pixels of the second display substrate are controlled to be transparent so that the left eye image is observed by the observer, the rest of the second sub-pixels display the right eye image, during the display period of the next frame, the first display substrate is controlled to display the right eye image, part of the second sub-pixels of the second display substrate are controlled to be transparent so that the right eye image is observed by the observer, and the rest of the second sub-pixels display the left eye image. In this way, the 3D image can be viewed by the observer in the display periods of two adjacent frames.
The display device in this embodiment may be: any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator and the like.
It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intermediate layer or element may also be present. Like reference numerals refer to like elements throughout.
In the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (16)

1. A three-dimensional display panel, comprising: the display device comprises a first display substrate and a second display substrate, wherein the first display substrate and the second display substrate are arranged in an overlapped mode;
the first display substrate comprises a plurality of first sub-pixels arranged in an array, the second display substrate comprises a plurality of second sub-pixels arranged in an array, in the same time period, the first sub-pixels are used for displaying one of a left eye image and a right eye image, the second sub-pixels are used for displaying the other of the left eye image and the right eye image, and the left eye image and the right eye image are used for forming a three-dimensional image.
2. The panel of claim 1, wherein the second sub-pixels comprise a first transparent sub-pixel and a second transparent sub-pixel which are alternately arranged, the first transparent sub-pixel is configured to perform a display function, the second transparent sub-pixel is configured to perform a transparent function, and light emitted from the first sub-pixel exits through the second transparent sub-pixel during a same period of time.
3. The three-dimensional display panel according to claim 2, wherein the light emitted by the first sub-pixel exits through a plurality of the second transparent sub-pixels during the same period of time.
4. The three-dimensional display panel according to claim 2, wherein a plurality of the first sub-pixels are arranged in an array along a first direction and a second direction, and a plurality of the second sub-pixels are arranged in an array along the first direction and the second direction; the first direction is perpendicular to the second direction;
the first display substrate and the second display substrate are arranged along a third direction, and the third direction is respectively vertical to the first direction and the second direction;
the propagation direction of light emitted by the ith first sub-pixel in the first direction and emitted by the ith second sub-pixel in the first direction is
Figure FDA0003334477190000011
Wherein, thetar，xThe light emitted by the ith first sub-pixel in the first direction is emitted by the r second sub-pixel in the first directionDirection of propagation of light, (x)r，i-xph，i) Is the relative distance, x, in the first direction between the r-th sub-pixel in the first direction and the i-th sub-pixel in the first directionr，iIs the position of the r-th sub-pixel in the first direction, xph，iD is the distance between the first display substrate and the second display substrate in the third direction;
the propagation direction of light emitted by the jth first sub-pixel in the second direction and emitted by the ith second sub-pixel in the second direction is
Figure FDA0003334477190000021
Wherein, thetar，yThe propagation direction of light emitted by the jth first sub-pixel in the second direction and emitted by the r-th second sub-pixel in the second direction (y)r，j-yph，j) Is the relative distance, y, in the second direction between the r-th sub-pixel in the second direction and the j-th first sub-pixel in the second directionr，jIs the position of the r-th sub-pixel in the second direction, yph，jIs the position of the jth first sub-pixel in the second direction.
5. The three-dimensional display panel according to claim 2, further comprising a light modulation layer located between the first display substrate and the second display substrate, wherein the light modulation layer is configured to modulate a propagation direction of the light emitted by the first sub-pixel so that the light emitted by the first sub-pixel exits through the second transparent sub-pixel.
6. The three-dimensional display panel according to claim 5, wherein the dimming layer is a Fresnel lens.
7. The three-dimensional display panel according to claim 5, wherein the light modulation layer comprises a lens film.
8. The three-dimensional display panel according to claim 7, wherein the lens film comprises a plurality of lens units, the plurality of lens units are arranged in one-to-one correspondence with the plurality of first sub-pixels, each of the lens units comprises a groove, and the first sub-pixels are located in the grooves.
9. The three-dimensional display panel according to claim 8, wherein the lens unit comprises a first lens, a second lens and a third lens, the second lens and the third lens being located on both sides of the first lens;
light emitted by the first sub-pixel within a first angular range is transmitted through the first lens, light emitted by the first sub-pixel within a second angular range is transmitted through the second lens, light emitted by the first sub-pixel within a third angular range is transmitted through the third lens, and the first angular range is between the second angular range and the third angular range.
10. The three-dimensional display panel according to claim 9, wherein the dimming layer further comprises a prism film between the lenticular film and the second display substrate.
11. The three-dimensional display panel according to claim 10, wherein the prism film includes a plurality of prisms, the plurality of prisms being arranged in one-to-one correspondence with the plurality of lens units; each prism comprises a first surface, a second surface, a third surface, a fourth surface, a fifth surface and a sixth surface;
the first surface and the second surface are planes perpendicular to the third direction, the first surface faces the first display substrate, and the second surface faces the second display substrate;
the third surface and the fourth surface are positioned on two sides of the first surface and face the first display substrate, a first included angle is formed between the third surface and the first surface, and a first included angle is formed between the fourth surface and the first surface;
the fifth surface and the sixth surface are positioned on two sides of the second surface and face the second display substrate, a second included angle is formed between the fifth surface and the second surface, and the second included angle is formed between the sixth surface and the second surface;
the first surface, the third surface, the fifth surface, the second surface, the sixth surface, and the fourth surface are connected in sequence;
the light emitted by the first sub-pixel and positioned in a first angle range is transmitted through the first lens and then sequentially transmitted through the first surface and the second surface;
the light emitted by the first sub-pixel and located in a second angle range is transmitted through the second lens and then sequentially transmitted through the third surface and the fifth surface;
and the light emitted by the first sub-pixel and positioned in a third angle range is transmitted through the third lens and then sequentially transmitted through the fourth surface and the sixth surface.
12. The three-dimensional display panel according to claim 11, wherein the thickness of the prism is a distance between the first surface and the second surface; a first length of the first surface in the first direction is the same as a first length of the second surface in the second direction, a second length of the second surface in the first direction is the same as a second length of the first surface in the second direction, and the first length is the same as the second length;
the thickness of the prism, the refractive index of the prism, the lower side angle of the prism, the upper side angle of the prism, the second length, the lower layer prism exit angle and the upper layer prism exit angle satisfy the following relational expression:
L＝2*H1*tan(γ/2)；
sin(γ+α1)＝n*sin(β1)；
sin(α2)＝n*sin(β2)；
β1+β2＝α1+α2；
wherein L is the second length, H1 is the thickness of the prism, γ is the angular width of a first angular range, α 1 is the lower side angle of the prism, α 1 is complementary to the first included angle, α 2 is the upper side angle of the prism, α 2 is complementary to the second included angle, β 1 is the exit angle of the lower prism, the exit angle of the lower prism is the exit angle of the light emitted by the first sub-pixel from the third surface, β 2 is the exit angle of the upper prism, the exit angle of the upper prism is the exit angle of the light emitted by the first sub-pixel from the fifth surface, and n is the refractive index of the prism.
13. A three-dimensional display device, comprising: the three-dimensional display panel of any one of claims 1 to 12.
14. A method for controlling a three-dimensional display panel, applied to the three-dimensional display panel according to any one of claims 1 to 12, the method comprising:
and in the same time period, controlling the first sub-pixel to display one of a left-eye image and a right-eye image, and controlling the second sub-pixel to display the other of the left-eye image and the right-eye image, wherein the left-eye image and the right-eye image are used for forming a three-dimensional image.
15. The method according to claim 14, wherein the second sub-pixels comprise first transparent sub-pixels and second transparent sub-pixels alternately arranged;
the controlling the second sub-pixel to display the other of the left-eye image and the right-eye image includes:
and in the same time period, controlling the first transparent sub-pixels to execute a display function and controlling the second transparent sub-pixels to execute a transparent function, wherein light emitted by the first sub-pixels is emitted through the second transparent sub-pixels.
16. The method for controlling a three-dimensional display panel according to claim 14, further comprising:
and in the display time periods of two adjacent frames, in the display time period of the previous frame, controlling the first sub-pixel to display the left eye image and controlling the second sub-pixel to display the right eye image, and in the display time period of the next frame, controlling the first sub-pixel to display the right eye image and controlling the second sub-pixel to display the left eye image.
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