CN113917699B - 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 PDFInfo
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- G—PHYSICS
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- 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
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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 first display substrate and the second display substrate are arranged in a stacked manner; the first display substrate comprises a plurality of first sub-pixels which are arranged in an array manner, the second display substrate comprises a plurality of second sub-pixels which are arranged in an array manner, the first sub-pixels are used for displaying one of a left eye image and a right eye image in the same time period, 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
Technical Field
The present invention relates to the field of display technologies, and 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 views of an image are required for a three-dimensional (3D) effect to be seen by both eyes of a viewer, that is, two different images are seen, and the 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 are used for solving the defects in the related art.
According to a first aspect of an embodiment 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 a stacked manner;
the first display substrate comprises a plurality of first sub-pixels which are arranged in an array manner, the second display substrate comprises a plurality of second sub-pixels which are arranged in an array manner, 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 same time period.
In one embodiment, the second sub-pixel includes a first transparent sub-pixel and a second transparent sub-pixel that are alternately arranged, where in the same period of time, the first transparent sub-pixel is used to perform a display function, the second transparent sub-pixel is used to perform a transparent function, and light emitted by the first sub-pixel exits through the second transparent sub-pixel.
In one embodiment, the light emitted by the first sub-pixel exits through a plurality of the second transparent sub-pixels within the same time period.
In one embodiment, the plurality of first sub-pixels are arranged in an array along a first direction and a second direction, and the plurality of 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 perpendicular to the first direction and the second direction respectively;
the propagation direction of the light emitted by the ith first sub-pixel in the first direction through the ith second sub-pixel in the first direction is that
Wherein θ r，x A propagation direction of light emitted for an ith first sub-pixel in the first direction through an ith second sub-pixel in the first direction, (x) r，i -x ph，i ) Is the relative distance, x, between the r-th second sub-pixel in the first direction and the i-th first sub-pixel in the first direction r，i For the r-th second sub-pixel in the first directionPosition in one direction, x ph，i D is the distance between the first display substrate and the second display substrate in the third direction, wherein the position of the ith first sub-pixel in the first direction is in the first direction;
The propagation direction of the light emitted by the jth first sub-pixel in the second direction through the jth second sub-pixel in the second direction is
Wherein θ r，y A propagation direction of light emitted for a jth first sub-pixel in the second direction through a jth second sub-pixel in the second direction, (y) r，j -y ph，j ) Is the relative distance between the (r) th second sub-pixel in the second direction and the (j) th first sub-pixel in the second direction, y r，j Y, which is the position of the r-th second sub-pixel in the second direction ph，j Is the position of the j-th first sub-pixel in the second direction.
In one embodiment, the three-dimensional display panel further includes a dimming layer, the dimming layer is located between the first display substrate and the second display substrate, and the dimming layer is used for modulating 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 plurality of lens units being disposed in one-to-one correspondence with the plurality of first sub-pixels, each of the lens units including a groove in which the first sub-pixel is located.
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 on both sides of the first lens;
light emitted by the first sub-pixel in a first angle range is transmitted through the first lens, light emitted by the first sub-pixel in a second angle range is transmitted through the second lens, light emitted by the first sub-pixel in a third angle range is transmitted through the third lens, and the first angle range is located between the second angle range and the third angle 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, the plurality of prisms being 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, the third surface and the first surface form a first included angle, and the fourth surface and the first surface form the first included angle;
the fifth surface and the sixth surface are positioned on two sides of the second surface and face the second display substrate, the fifth surface and the second surface form a second included angle, and the sixth surface and the second surface form the second included angle;
the first surface, the third surface, the fifth surface, the second surface, the sixth surface and the fourth surface are sequentially connected;
light emitted by the first sub-pixel and located in a first angle range is transmitted through the first lens and then sequentially transmitted through the first surface and the second surface;
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;
Light emitted by the first sub-pixel and located 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 prism has a thickness that 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 first direction and 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 prism emergence angle and the upper prism emergence angle satisfy the following relation:
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 the first angular range, α1 is the lower side angle of the prism, α1 is complementary to the first included angle, α2 is the upper side angle of the prism, α2 is complementary to the second included angle, β1 is the lower prism exit angle, the lower prism exit angle is the exit angle of the light emitted by the first sub-pixel from the third surface, β2 is the upper prism exit angle, the upper prism exit angle 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 an embodiment of the present invention, there is provided a three-dimensional display device including: the three-dimensional display panel.
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-pixel includes a first transparent sub-pixel and a second transparent sub-pixel 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-pixel to execute a display function, and controlling the second transparent sub-pixel to execute a transparent function, wherein light emitted by the first sub-pixel exits through the second transparent sub-pixel.
In one embodiment, the control method of the three-dimensional display panel further includes:
and in the display time period of the two adjacent frames, controlling the first sub-pixel to display the left eye image and controlling the second sub-pixel to display the right eye image in the display time period of the previous frame, and controlling the first sub-pixel to display the right eye image and controlling the second sub-pixel to display the left eye image in the display time period of the next frame.
According to the above 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 period of time, 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 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 of two adjacent periods of time using the same display panel, and the other of the left-eye image and the right-eye image is displayed in the latter period of time. Compared with the related art, the technical scheme provided by the embodiment has the advantages 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 view of a three-dimensional display panel according to an embodiment of the present invention;
FIG. 2 is a schematic view of an optical path of a three-dimensional display panel according to an embodiment of the present invention;
FIG. 3 is a schematic view showing the structure of another three-dimensional display panel according to an embodiment of the present invention;
FIG. 4 is a schematic view showing the structure of another three-dimensional display panel according to an embodiment of the present invention;
FIG. 5 is a schematic view showing the structure of another three-dimensional display panel according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of another three-dimensional display panel according to an embodiment of the present invention;
fig. 7 is a schematic structural view of another three-dimensional display panel according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying 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 are stacked, and the first display substrate CELL1 and the second display substrate CELL2 are arranged.
The first display substrate CELL1 includes a plurality of first sub-pixels 11 arranged in an array, the second display substrate CELL2 includes a plurality of second sub-pixels 12 arranged in an array, and in the 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, where 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 period of time, 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 of two adjacent periods of time using the same display panel, and the other of the left-eye image and the right-eye image is displayed in the latter period of time. Compared with the related art, the technical scheme provided by the embodiment has the advantages 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.
The embodiment of the invention also provides a three-dimensional display panel, as shown in fig. 1, which comprises: 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 the viewer.
Wherein, CELL1 can be any one of an OLED display substrate, a QLED (Quantum Dot Light Emitting Diodes, quantum dot light emitting diode) display substrate, a MiniLED display substrate, and an LCD display substrate, and CELL2 can 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 not limited thereto. In this embodiment, the description will be given taking the example that both CELL1 and CELL2 are OLED display substrates.
In the present embodiment, the organic light emitting layer in the OLED display substrate may be prepared using 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 this 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.
The first sub-pixel 11 is used to display one of the left-eye image and the right-eye image and the second sub-pixel 12 is used to display 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, during the same period. 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. After the left EYE eye_l of the observer receives the left EYE image and the right EYE 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 left-eye sub-pixels 111 and right-eye sub-pixels 112 alternately arranged. The left-eye subpixel 111 is used to display a left-eye image, and the right-eye subpixel 112 is used to display a right-eye image. In the display period of the same frame, the right-eye subpixel 112 may not be operated when the left-eye subpixel 111 is used to display the left-eye image, or may not be operated when the right-eye subpixel 112 is used to display the right-eye image, and the left-eye subpixel 111 is not used to display the left-eye image.
In this embodiment, as shown in fig. 1, the second sub-pixel 12 includes first transparent sub-pixels 121 and second transparent sub-pixels 122 alternately arranged. The first transparent subpixel 121 and the second transparent subpixel 122 can perform a transparent function and a display function. The first transparent subpixel 121 and the second transparent subpixel 122 are each switchable between a transparent function and a 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 period 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 to display the right-EYE image and the left-EYE subpixel 111 is not used to display the left-EYE image, the first transparent subpixel 121 is used to perform the display function and is used to display the left-EYE image, and the light emitted by the first transparent subpixel 121 enters the left EYE 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 be blocked, so that the light emitted from the right-EYE subpixel 112 is prevented from entering the left EYE eye_l of the observer. The second transparent subpixel 122 is used for performing a transparent function, and the light emitted by the right EYE subpixel 112 exits through the second transparent subpixel 122 and enters the right EYE eye_r of the observer.
In the present embodiment, in the display period of two adjacent frames, in the display period of the next frame, the first display substrate CELL1 displays the left EYE image, that is, the left EYE subpixel 111 displays the left EYE image and the right EYE subpixel 112 does not display the right EYE image, the first transparent subpixel 121 is used to perform the display function and is used to display the right EYE image, and the light emitted by the first transparent subpixel 121 enters the right EYE 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 be blocked, and the light emitted from the left-EYE subpixel 111 is prevented from entering the right EYE eye_r of the observer. The second transparent subpixel 122 is used for performing a transparent function, and light emitted by the left EYE subpixel 111 exits through the second transparent subpixel 122 and enters the left EYE eye_l of the observer.
The three-dimensional image is observed by the observer in the display time period of two adjacent frames. Wherein 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 next frame.
In the present embodiment, the frame rate of the first display substrate CELL1 is 60Hz, and the frame rate of the second display substrate CELL2 is 60Hz.
In this embodiment, the light emitted by the same first sub-pixel 11 can be emitted through a plurality of second transparent sub-pixels within the same period of time. That is, when the first display substrate CELL1 displays the right-eye image, the observer may observe the right-eye image at different positions, and when the first display substrate CELL1 displays the left-eye image, the observer may observe the left-eye image at different positions. Thus, 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 x i The emitted light passes through the (r) th second sub-pixel Q in the first direction x r The propagation direction of the outgoing light Lr is
Wherein the r second sub-pixel Q in the first direction x r Execute transparent function, θ r，x Is the ith first in the first direction xSub-pixel P i The emitted light passes through the r second sub-pixel Q in the first direction r The propagation direction of the outgoing light Lr, (x) r，i -x ph，i ) Is the r second sub-pixel Q in the first direction x r And the ith first sub-pixel P in the first direction x i Relative distance in first direction, x r，i For the r second sub-pixel Q in the first direction x r Position in the first direction x, x ph，i For the ith first sub-pixel P in the first direction x i The position d in the first direction x is the 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 x i The emitted light passes through the (r) th second sub-pixel Q in the first direction x r The outgoing light Lr may enter the right EYE 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 x i The emitted light may be transmitted through other second sub-pixels on the second display substrate CELL2, and the light L1 transmitted through other second sub-pixels may enter the left EYE eye_l of the observer. For example, the ith first subpixel P in the first direction x i The emitted light is transmitted through the i-1 th second sub-pixel on the second display substrate CELL 2. In order to realize three-dimensional display, when the ith first sub-pixel P in the first direction x is required i The emitted light passes through the (r) th second sub-pixel Q in the first direction x r When the emitted light Lr enters the right EYE EYE_R of the observer, the R second sub-pixel Q in the first direction x can be controlled r And executing a transparent function, and controlling the i-1 th second sub-pixel to execute a display function to display the left eye image.
Similarly, the propagation direction of the light emitted by the jth first sub-pixel in the second direction y through the jth second sub-pixel in the second direction is
Wherein the r second sub-pixel in the second direction y performs a transparent function, θ r，y A propagation direction of light emitted for the jth first sub-pixel in the second direction y through the jth second sub-pixel in the second direction y, (y) r，j -y ph，j ) Is the relative distance between the (r) th second sub-pixel in the second direction and the (j) th first sub-pixel in the second direction, y r，j Y, which is the position of the r-th second sub-pixel in the second direction ph，j Is 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, where 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 used for modulating the propagation direction of the 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 dimming 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 one groove HOLE, and the first sub-pixels 11 are located in the groove 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, the second Lens2 and the third Lens3 are positioned at two sides of the first Lens 1.
The light emitted by the first sub-pixel 11 in the first angle range A1 is transmitted through the first Lens1, the light emitted by the first sub-pixel 11 in the second angle range A2 is transmitted through the second Lens2, the light emitted by the first sub-pixel 11 in the third angle range A3 is transmitted through the third Lens3, and the first angle range A1 is located between the second angle range A2 and the third angle 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 °, and light emitted from the first sub-pixel 11 having an incident angle greater than 42.15 ° cannot enter the lens film 311, and light emitted from the first sub-pixel 11 having 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, the light emitted by the first sub-pixel 11 and having the incident angle in the first angle range A1 is transmitted through the first Lens1, the light emitted by the first sub-pixel 11 and having the incident angle in the second angle range A2 is transmitted through the second Lens2, and the light emitted by the first sub-pixel 11 and having the incident angle in the third angle range A3 is transmitted through the third Lens 3.
In this embodiment, the radius of each Lens in the first Lens1, the second Lens2 and the third Lens3 is R, the chord height is H2, the focal length is F, the refractive index is n, the depth of the groove HOLE is D, and the radius, the chord height, the focal length, the refractive index and the depth of the groove HOLE of the Lens satisfy the following relation:
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 this 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 CELL2.
In this 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 forms a first included angle θ1 with the first surface F1, and the fourth surface F4 forms a first included angle θ1 with the first surface F1. The first included angle θ1 is an obtuse angle.
In this 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 θ2, and the sixth surface F6 and the second surface F2 form a second included angle θ2. The second included angle θ2 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 connected in order.
In this embodiment, as shown in fig. 6, the light within the first angle range A1 emitted by the first sub-pixel 11 passes through the first Lens1 and then sequentially passes through the first surface F1 and the second surface F2.
In this embodiment, as shown in fig. 6, the light within the second angle range A2 emitted by the first sub-pixel 11 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 within the third angle range A3 emitted by the first subpixel 11 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 surface F1 has the same first length in the first direction x as the second direction y, and the second surface F2 has the same second length L in the first direction x as the second direction y, and the first length is the same as the second length L. The chord length of the cambered 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 following relationship is satisfied among the thickness H1 of the prism 3121, the refractive index of the prism 3121, the lower side angle α1 of the prism, the upper side angle α2 of the prism, the second length L, the lower prism exit angle β1 and the upper prism exit angle β2:
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 the first angular range, γ is the angle ω between the light incident on the prism and the third direction z, for example, 28 °, α1 is the lower angle of the prism, α1 is complementary to the first angle θ1, α2 is the upper angle of the prism, α2 is complementary to the second angle θ2, β1 is the lower prism exit angle, the lower prism exit angle is the exit angle of the light emitted by the first sub-pixel 11 from the third surface F3, β2 is the exit angle of the upper prism, the exit angle of the light emitted by the first sub-pixel 11 from the fifth surface F5, and n is the refractive index of the prism.
In this embodiment, from the above-described relational expression, the relationship between α1 and α2 can be obtained, and the angle of one of α1 and α2 can be assigned, that is, the angle of the other can be obtained.
In the present embodiment, the dimming layer 31 includes the lens film 311 and the prism film 312, so that the space between the first display substrate CELL1 and the second display substrate CELL2 can be reduced, and further the thickness of the three-dimensional display panel can be reduced.
In the present embodiment, the light modulation layer 31 including the lens film 311 and the prism film 312 is exemplified. In other embodiments, the dimming layer 31 may include the lens film 311 instead of the prism film 312, and may also reduce the space between the first display substrate CELL1 and the second display substrate CELL2, so as to reduce the thickness of the three-dimensional display panel. Moreover, crosstalk between the left-eye image and the right-eye image can also be reduced.
In other embodiments, the dimming layer 31 may also be a fresnel lens. The Fresnel lens is used for modulating the propagation direction of light emitted by the first sub-pixel, so that the visual angle of the first display substrate can be improved, and the visual angle of the three-dimensional display panel can be further improved.
The embodiment of the invention also provides a three-dimensional display panel. In the present embodiment, the first display substrate CELL1 and the second display substrate CELL2 may be LCD display substrates.
In one embodiment, the first display substrate CELL1 may be a liquid crystal display substrate adopting an advanced super-dimensional field switching (High Advanced Super Dimension Switch, abbreviated as HADS) mode, which may increase 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 dimming layer (not shown), where the first light guide plate, the first liquid crystal layer and the first dimming 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 by the first display substrate CELL1 for directional display.
In this 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 dimming layer (not shown), where the second light guide plate, the second liquid crystal layer and the second dimming 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 for modulating the propagation direction of the light emitted by the second display substrate CELL2 for directional display.
In this embodiment, as shown in fig. 7, in the display period 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 on, the first right light source Br1 is off, the first display substrate CELL1 displays a 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 bright 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 observer can view the three-dimensional image.
In the display time period of two adjacent frames, 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 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 an 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 a left eye image, and light emitted by the second left light source Bl2 through the second light guide plate, the second liquid crystal layer and the second light adjusting layer enters the left eye of the observer. The observer can view the 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 continue to view the three-dimensional image.
In this way, a 3D display effect can be achieved by the staggered 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 utilizing a Fresnel lens, the second display substrate CELL2 can be equivalent to a grating, so that a 3D display effect can be realized through double-layer display, and when the first display substrate CELL1 and the second display substrate CELL2 synchronously display, a 2D display effect can be realized.
In this embodiment, the second display substrate CELL2 may also realize gray scale display, so as to realize three-dimensional gray scale display, which may be applied to high-precision black-and-white or color display sheets such as medical 3D chest radiography and CT results, and may also be applied to remote visual medical treatment, analog 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 embodiment.
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 the present embodiment, in the same period of time, the first subpixel is controlled to display one of the left-eye image and the right-eye image, and the second subpixel is controlled to display the other of the left-eye image and the right-eye image, which are used to form the 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 exits through the second transparent sub-pixel.
In this embodiment, in the display period of two adjacent frames, in the display period of the previous frame, the first subpixel is controlled to display the left-eye image and the second subpixel is controlled to display the right-eye image, and in the display period of the next frame, the first subpixel is controlled to display the right-eye image and the second subpixel is controlled to display the left-eye image. That is, in the display period of the previous frame, the first display substrate is controlled to display the left eye image, a part of the second sub-pixels of the second display substrate are controlled to be transparent so that the left eye image is watched by the observer, the rest of the second sub-pixels display the right eye image, in the display period of the next frame, the first display substrate is controlled to display the right eye image, a part of the second sub-pixels of the second display substrate are controlled to be transparent so that the right eye image is watched 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 during the display period of two adjacent frames.
Note that, the display device in this embodiment may be: electronic paper, mobile phone, tablet computer, television, notebook computer, digital photo frame, navigator and any other products or components with display function.
It is noted that in the drawings, the size of layers and regions may be exaggerated for clarity of illustration. Moreover, 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 intervening layers may 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 be present. In addition, it will 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 intervening layer or element may also be present. Like reference numerals refer to like elements throughout.
In the present invention, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined 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 is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (14)
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 a stacked manner;
the first display substrate comprises a plurality of first sub-pixels which are arranged in an array manner, the second display substrate comprises a plurality of second sub-pixels which are arranged in an array manner, 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 same time period;
The second sub-pixels comprise 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;
the first sub-pixels are arranged in an array along a first direction and a second direction, and 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 perpendicular to the first direction and the second direction respectively;
the propagation direction of the light emitted by the ith first sub-pixel in the first direction through the ith second sub-pixel in the first direction is that
Wherein θ r,x A propagation direction of light emitted for an ith first sub-pixel in the first direction through an ith second sub-pixel in the first direction, (x) r,i -x ph,i ) Is the relative distance, x, between the r-th second sub-pixel in the first direction and the i-th first sub-pixel in the first direction r,i X is the position of the r-th second sub-pixel in the first direction ph,i D is the distance between the first display substrate and the second display substrate in the third direction, wherein the position of the ith first sub-pixel in the first direction is in the first direction;
the propagation direction of the light emitted by the jth first sub-pixel in the second direction through the jth second sub-pixel in the second direction is
Wherein θ r,y A propagation direction of light emitted for a jth first sub-pixel in the second direction through a jth second sub-pixel in the second direction, (y) r,j -y ph,j ) Is the relative distance between the (r) th second sub-pixel in the second direction and the (j) th first sub-pixel in the second direction, y r,j Y, which is the position of the r-th second sub-pixel in the second direction ph,j Is the position of the j-th first sub-pixel in the second direction.
2. The three-dimensional display panel of claim 1, wherein light emitted by the first subpixel exits through a plurality of the second transparent subpixels during the same time period.
3. The three-dimensional display panel of claim 1, further comprising a dimming layer between the first display substrate and the second display substrate, the dimming layer for modulating a propagation direction of light emitted by the first subpixel such that light emitted by the first subpixel exits through the second transparent subpixel.
4. A three-dimensional display panel according to claim 3, characterized in that the dimming layer is a fresnel lens.
5. The three-dimensional display panel of claim 3, wherein the dimming layer comprises a lens film.
6. The three-dimensional display panel according to claim 5, wherein the lens film includes a plurality of lens units disposed in one-to-one correspondence with the plurality of first sub-pixels, each of the lens units including a groove in which the first sub-pixel is located.
7. The three-dimensional display panel according to claim 6, wherein 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 in a first angle range is transmitted through the first lens, light emitted by the first sub-pixel in a second angle range is transmitted through the second lens, light emitted by the first sub-pixel in a third angle range is transmitted through the third lens, and the first angle range is located between the second angle range and the third angle range.
8. The three-dimensional display panel of claim 7, wherein the dimming layer further comprises a prismatic film positioned between the lens film and the second display substrate.
9. The three-dimensional display panel according to claim 8, wherein the prism film includes a plurality of prisms, the plurality of prisms being 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, the third surface and the first surface form a first included angle, and the fourth surface and the first surface form the first included angle;
The fifth surface and the sixth surface are positioned on two sides of the second surface and face the second display substrate, the fifth surface and the second surface form a second included angle, and the sixth surface and the second surface form the second included angle;
the first surface, the third surface, the fifth surface, the second surface, the sixth surface and the fourth surface are sequentially connected;
light emitted by the first sub-pixel and located in a first angle range is transmitted through the first lens and then sequentially transmitted through the first surface and the second surface;
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;
light emitted by the first sub-pixel and located in a third angle range is transmitted through the third lens and then sequentially transmitted through the fourth surface and the sixth surface.
10. The three-dimensional display panel according to claim 9, wherein a 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 first direction and 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 prism emergence angle and the upper prism emergence angle satisfy the following relation:
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 the first angular range, α1 is the lower side angle of the prism, α1 is complementary to the first included angle, α2 is the upper side angle of the prism, α2 is complementary to the second included angle, β1 is the lower prism exit angle, the lower prism exit angle is the exit angle of the light emitted by the first sub-pixel from the third surface, β2 is the upper prism exit angle, the upper prism exit angle 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.
11. A three-dimensional display device, comprising: the three-dimensional display panel of any one of claims 1 to 10.
12. A control method of a three-dimensional display panel, characterized by being applied to the three-dimensional display panel according to any one of claims 1 to 10, 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.
13. The method of claim 12, 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-pixel to execute a display function, and controlling the second transparent sub-pixel to execute a transparent function, wherein light emitted by the first sub-pixel exits through the second transparent sub-pixel.
14. The method of controlling a three-dimensional display panel according to claim 12, further comprising:
and in the display time period of the two adjacent frames, controlling the first sub-pixel to display the left eye image and controlling the second sub-pixel to display the right eye image in the display time period of the previous frame, and controlling the first sub-pixel to display the right eye image and controlling the second sub-pixel to display the left eye image in the display time period of the next frame.
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