CN112415765B - Naked eye stereoscopic display device and display method - Google Patents

Abstract

The invention discloses a naked eye stereoscopic display device and a display method, which aim to solve the problem that the angular resolution and the spatial resolution of the naked eye stereoscopic display device in the prior art are mutually restricted. The naked eye stereoscopic display device is provided with a plurality of repeating units; the repeating unit includes: the liquid crystal display panel comprises a substrate, a liquid crystal box and a spacer layer, wherein the substrate and the liquid crystal box are oppositely arranged, and the spacer layer is filled between the substrate and the liquid crystal box; wherein, in each repeating unit, a plurality of light emitting sources are arranged on one side of the substrate facing the spacer layer, and the liquid crystal box is provided with a plurality of light control units which are configured to control the transmittance of the incident light of the light emitting sources.

Description

Naked eye stereoscopic display device and display method

Technical Field

The invention relates to the technical field of stereo, in particular to a naked eye stereo display device and a display method.

Background

Naked eye three-dimensional (3D) display is a trend of future display development, and mainly includes holographic 3D display, volumetric 3D display, auto-stereoscopic 3D display technology, and the like. Among them, the autostereoscopic 3D display technology has been considered as a naked eye 3D display technology that is most likely to be commercially popularized due to its ability to obtain dynamic, color, and large-field-angle three-dimensional display effects. The free three-dimensional (3D) display technology comprises a cylindrical lens array technology, a parallax barrier technology, a micro lens array integrated imaging technology and the like, wherein the 2D display screen and an optical element are adopted, the 2D display screen is divided in a specific mode and is used for displaying 2D images of different viewing angles, and then the 2D images are converted into 3D images seen by human eyes through a specific optical principle. The common defect of the display mode is that the angular resolution and the spatial resolution of a 3D image seen by human eyes are mutually restricted for the same 2D display screen. The result is that when the viewer sees a good stereoscopic effect, the perceived image is blurred (PPI is low), and when the PPI of the image is increased, the stereoscopic effect of the 3D display is poor. A 2D display using a higher PPI is an effective method to solve this problem, but due to the processing technology, a 2D display using a higher PPI is currently difficult to obtain.

Disclosure of Invention

The invention provides a naked eye stereoscopic display device and a display method, which aim to solve the problem that the angular resolution and the spatial resolution of the naked eye stereoscopic display device in the prior art are mutually restricted.

The embodiment of the invention provides a naked eye three-dimensional display device, which is provided with a plurality of repeating units; the repeating unit includes: the liquid crystal display panel comprises a substrate, a liquid crystal box and a spacer layer, wherein the substrate and the liquid crystal box are oppositely arranged, and the spacer layer is filled between the substrate and the liquid crystal box; wherein the content of the first and second substances,

in each of the repeating units, a plurality of light emitting sources are disposed on a side of the substrate facing the spacer layer, and the liquid crystal cell has a plurality of light control units configured to control transmittance of incident light from the light emitting sources.

In a possible implementation manner, a retaining wall structure is arranged between adjacent repeating units, and the height of the retaining wall structure in the direction perpendicular to the substrate is the same as the height of the spacer layer in the direction perpendicular to the substrate.

In one possible embodiment, each of the repeating units includes: a the luminous light sources are arranged in a row and a column; each repeating unit comprises b × b light control units which are arranged in b rows and b columns;

and a is the center of the array formed by the luminous light sources, and is superposed with the center of the array formed by the b is the center of the array formed by the light control units.

In one possible embodiment, the number of the luminescent light sources n in each of the repeating units satisfies the following relation:

n = H/H, wherein H denotes the refresh frequency of the liquid crystal cell, H denotes the frequency of the effect of persistence of vision in the human eye, and n is greater than a.

In one possible embodiment, the viewpoint divergence angle of each of the light control units

The included angle omega between the adjacent viewpoints meets the following relation:

wherein, the first and the second end of the pipe are connected with each other,

Ω = np/L, n1 represents a refractive index of the spacer layer, a represents a width of the light control unit in a first direction, w represents a width of the light emitting source in the first direction, L represents a thickness of the spacer layer in a direction perpendicular to the substrate, n represents the number of the light emitting sources in each of the repeating units, p represents a pitch between centers of the adjacent light control units, the light emitting sources are square in a forward projection on the substrate, and the first direction is parallel to a frame of the square.

In one possible embodiment, the light-emitting source is a micro light-emitting diode.

In a possible embodiment, the autostereoscopic display apparatus further comprises a pupil tracking device configured to track a movement position of a pupil of an eye of the user.

The embodiment of the invention also provides a display method of the naked eye stereoscopic display device, which comprises the following steps:

controlling the light-emitting light source to emit light;

and controlling the liquid crystal box to display a parallax image corresponding to the current light emitting source through the light control unit according to the current light emitting source.

In a possible embodiment, the controlling the light emitting source to emit light includes: and controlling the light-emitting light sources in the repeating unit to alternately emit light in sequence.

In one possible embodiment, the autostereoscopic display apparatus further comprises a pupil tracking device;

the control of the light-emitting light source to emit light comprises the following steps:

moving, by the pupil tracking device, a location of a pupil of an eye of a user;

and controlling the corresponding light-emitting light source to emit light according to the current pupil position.

The embodiment of the invention has the following beneficial effects: in the embodiment of the invention, the naked eye three-dimensional display device is provided with a plurality of repeating units F; each repeating unit F includes: a substrate 1 and a liquid crystal box 2 which are oppositely arranged, and a spacer layer 3 filled between the substrate 1 and the liquid crystal box 2; in each repeating unit F, a plurality of light sources 10 are disposed on one side of the substrate 1 facing the spacer layer 3, the liquid crystal cell 2 has a plurality of light control units 20, the light control units 20 are configured to control transmittance of incident light of the light sources 10, the light sources 10 emit light, the light control units 20 passing through the liquid crystal cell after a certain transmission distance are divided into several beams of light in different directions, different viewing angles are respectively formed, separation of the viewing angles is realized, and when displaying, an image with a certain parallax is loaded on each viewing angle, so that naked eye stereoscopic display can be realized. Therefore, by refreshing the time sequence, the number of the viewpoints is increased to n times of the original number on the premise of not reducing the resolution of the displayed image, the high-resolution stereoscopic display device has a good stereoscopic effect while forming a high image resolution, and the problem that the angular resolution and the spatial resolution of the stereoscopic display device in the prior art are mutually restricted is solved.

Drawings

Fig. 1 is a schematic structural diagram of a naked eye stereoscopic display device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a repeating unit provided in an embodiment of the present invention;

FIG. 3 is a schematic diagram of a distribution of light management units provided by an embodiment of the present invention;

FIG. 4 is a schematic distribution diagram of a light source according to an embodiment of the present invention;

FIG. 5 is a schematic view of a viewpoint divergence angle provided by an embodiment of the present invention;

fig. 6 is a schematic diagram of an included angle between two adjacent viewpoints according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another autostereoscopic display apparatus according to an embodiment of the present invention;

fig. 8 is a schematic view of a display method of a autostereoscopic display apparatus according to an embodiment of the present invention;

FIG. 9 is a diagram illustrating a relationship between a viewing angle and a viewpoint divergence angle according to an embodiment of the present invention;

fig. 10A is a schematic view of a viewpoint distribution when the light-emitting source numbered 1 in fig. 4 emits light according to an embodiment of the present invention;

fig. 10B is a schematic view of a viewpoint distribution when the light-emitting source numbered 2 in fig. 4 emits light according to an embodiment of the present invention;

fig. 10C is a schematic view of a viewpoint distribution when the light-emitting source numbered 3 in fig. 4 emits light according to an embodiment of the present invention;

fig. 10D is a schematic view of a viewpoint distribution when the light-emitting source numbered 4 in fig. 4 emits light according to an embodiment of the present invention;

fig. 10E is a schematic view of the viewpoint distribution when the 4 light-emitting light sources in fig. 4 simultaneously emit light according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without inventive step, are within the scope of protection of the disclosure.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components is omitted from the present disclosure.

Referring to fig. 1, an embodiment of the present invention provides a autostereoscopic display apparatus having a plurality of repeating units F; the repeating unit F includes: a substrate 1 and a liquid crystal box 2 which are oppositely arranged, and a spacer layer 3 filled between the substrate 1 and the liquid crystal box 2; wherein the content of the first and second substances,

in each of the repeating units F, a plurality of light-emitting sources 10 are disposed on a side of the substrate 1 facing the spacer layer 3, and the liquid crystal cell 2 has a plurality of light control units 20, the light control units 20 being configured to control transmittance of light incident from the light-emitting sources 10. Specifically, the light source 10 may be a lambertian body light source, specifically, a point light source lambertian body light source, and has a three-dimensional light emitting effect, specifically, the light source 10 may be similar to a point light source, the point light source emits light by a lambertian body, the smaller the volume of the light source 10 is, the better the light source is, and specifically, the light source 10 may be a micro-LED.

In the embodiment of the invention, the naked eye stereoscopic display device is provided with a plurality of repeating units F; each repeating unit F includes: a substrate 1 and a liquid crystal box 2 which are oppositely arranged, and a spacer layer 3 filled between the substrate 1 and the liquid crystal box 2; in each repeating unit F, a plurality of light sources 10 are disposed on one side of the substrate 1 facing the spacer layer 3, the liquid crystal cell 2 has a plurality of light control units 20, the light control units 20 are configured to control transmittance of incident light of the light sources 10, the light sources 10 emit light, the light control units 20 passing through the liquid crystal cell after a certain transmission distance are divided into several beams of light in different directions, different viewing angles are respectively formed, separation of the viewing angles is realized, and when displaying, an image with a certain parallax is loaded on each viewing angle, so that naked eye stereoscopic display can be realized. Therefore, by refreshing the time sequence, the number of the viewpoints is increased to n times of the original number on the premise of not reducing the resolution of the displayed image, a better three-dimensional effect is achieved while high image resolution is achieved, and the problem that the angle resolution and the space resolution of the three-dimensional display device in the prior art are mutually restricted is solved.

In specific implementation, the Liquid Crystal cell 2 may adopt a Liquid Crystal Display (LCD) without a backlight source, and includes a lower polarizer, a TFT array substrate, a Liquid Crystal layer, an opposite substrate, and an upper polarizer, which are sequentially located on a side of the spacer layer 3 away from the substrate 1. The array substrate may be provided with a pixel electrode layer (specifically, may include a plurality of block-shaped pixel electrodes), and the opposite substrate may be provided with a common electrode layer, and by applying pressure to the pixel electrode and the common electrode, a pixel opening that can control light transmittance is formed. Specifically, each of the light control units may include a pixel electrode and a common electrode disposed opposite to each other, and a liquid crystal layer disposed between the pixel electrode and the common electrode. The opposite substrate may not be provided with a color film layer, the light emitting source may be monochromatic light emitting the same color, and the autostereoscopic display device may be an autostereoscopic display device performing monochromatic light display. Of course, the naked eye stereoscopic display device may also be a naked eye stereoscopic display device for performing color display, and specifically, each of the light emitting sources 10 may have a red sub light emitting source for emitting red light, a green sub light emitting source for emitting green light, and a blue sub light emitting source for emitting blue light, so as to implement color display; specifically, color display may be performed by setting a color resistance of the same color in each repeating unit and setting different color resistances in different repeating units, for example, as shown in fig. 1, a red color resistance may be set in the repeating unit F on the left side, a green color resistance may be set in the repeating unit F in the middle, and a blue color resistance may be set in the repeating unit F on the right side, so as to implement color stereoscopic display.

In practical implementation, as shown in fig. 1, a retaining wall structure 4 is disposed between adjacent repeating units F, and the height of the retaining wall structure 4 in the direction perpendicular to the substrate 1 is the same as the height of the spacer layer 3 in the direction perpendicular to the substrate 1. In the embodiment of the present disclosure, the retaining wall structure 4 is disposed between the adjacent repeating units F, so that the light emitted from the adjacent repeating units F can be shielded, and crosstalk of the light emitted from the adjacent repeating units F can be avoided.

In specific implementation, refer to fig. 2, fig. 3, and fig. 4, where fig. 3 is a schematic diagram of an arrangement of the light control unit 20, and fig. 4 is a schematic diagram of an arrangement of the light-emitting sources 10, and each repeating unit F includes: a luminous light sources 10, a luminous light sources 10 are arranged in a row and a column; each repeating unit F includes b light management units 20, b light management units 20 are arranged in b rows and b columns; the center O of the array of a light emitting sources 10 coincides with the center O' of the array of b light controlling units 20. Specifically, as shown in fig. 2, each repeating unit F includes: 2*2 light sources 10,2 x 2 light sources 10 arranged in 2 rows and 2 columns; each repeating unit F includes 4*4 light management units 20, and 4 by 4 light management units 20 arranged in 4 rows and 4 columns. The light emitting light sources 10 are arranged symmetrically about the center, and the light control unit 20 is arranged symmetrically about the center.

In practical implementation, the number n of point-emission light sources 10 in one repeating unit F is firstly limited by the refresh frequency of the liquid crystal cell, and specifically, the number of emission light sources n in each repeating unit F satisfies the following relation: n = H/H, wherein H denotes the refresh frequency of the liquid crystal cells, H denotes the frequency of the effect of persistence of vision of the human eye, and n is greater than or equal to a, so as to realize a plurality of successive pictures. Specifically, for example, the refresh frequency of the liquid crystal cell is 120Hz, and the number n of the light-emitting sources 10 is less than or equal to 5 in order to ensure 24Hz of the human eye visual persistence effect.

In particular, referring to FIGS. 5 and 6, the viewpoint divergence angle of each light management unit 20

The included angle omega with the adjacent viewpoint satisfies the following relation:

wherein the content of the first and second substances,

Ω = np/L, n1 denotes a refractive index of the spacer layer 3, a denotes a width of the light control unit 20 in the first direction AB, w denotes a width of the light-emitting source 10 in the first direction AB, L denotes a thickness of the spacer layer 3 in a direction perpendicular to the substrate 1, n denotes the number of the light-emitting sources 10 per repeating unit F, p denotes a pitch between centers of the adjacent light control units 20, a forward projection of the light-emitting sources 10 on the substrate 1 is a square, and the first direction AB is parallel to a frame of the square. In the embodiment of the present invention, the viewpoint divergence angle of each light control unit 20

The included angle omega with the adjacent viewpoint satisfies the following relation:

crosstalk between adjacent viewpoints can be avoided.

In specific implementation, referring to fig. 7, the autostereoscopic display apparatus further includes a pupil tracking device configured to track a moving position of a pupil of an eye of the user. Specifically, the autostereoscopic display apparatus further includes a light source control device that performs light source control according to information obtained by the pupil tracking device. Specifically, the light source and the liquid crystal cell may be used as a display module, and the pupil tracking device and the light source control device may be used as a control module.

Based on the same inventive concept, referring to fig. 8, an embodiment of the present invention further provides a display method of a autostereoscopic display apparatus according to an embodiment of the present invention, including:

s100, controlling a light-emitting light source to emit light;

and S200, controlling the liquid crystal box to display the parallax image corresponding to the current luminous light source through the light control unit according to the current luminous light source.

In specific implementation, regarding step S100, controlling the light-emitting light source to emit light includes: and controlling the light-emitting light sources in the repeating unit to alternately emit light in sequence.

In an embodiment of the present invention, controlling a light emitting source to emit light includes: and the light-emitting light sources in the repeating units are controlled to alternately emit light in sequence, so that the naked eye stereoscopic display device has lower manufacturing cost and the complexity of the display device is simplified.

In specific implementation, the autostereoscopic display apparatus further includes a pupil tracking device; with respect to step S100, controlling the light-emitting light source to emit light includes:

step S101, moving positions of pupils of eyes of a user are tracked through pupil tracking equipment;

and S102, controlling the corresponding light-emitting light source to emit light according to the current pupil position.

In the embodiment of the invention, the pupil tracking device tracks the position of the pupil of the human eye, so that the position of the viewpoint is determined, the position is fed back to the light source control device to light a proper light source, and refreshing is not performed any more, so that the refreshing frequency of the display panel and the number of the light-emitting light sources under each repeating unit are not required.

In order to more clearly understand the autostereoscopic display apparatus provided by the embodiment of the invention, the following is further described in detail with reference to the autostereoscopic display apparatus shown in fig. 1 as follows:

the naked eye three-dimensional display device consists of a substrate 1, a light-emitting light source 10 (a point light source), a spacer layer 3, a BM (barricade structure 4) and a liquid crystal box 2 (an LCD panel);

A. the substrate 1, specifically, the substrate 1 selects the material with good flatness and stability and easy to glue, preferably a glass substrate, and also can use silicon or polyester compound, and no special requirement is made on the thickness of the substrate 1, specifically, the substrate 1 can be provided with a driving circuit for driving the light-emitting light source 10 to control the light-emitting of the light-emitting light source 10;

B. the light-emitting source 10 (point light source) is a lambertian body for emitting light, the smaller the volume is, the better the volume is, and a micro-LED is preferred; the point light source is body-emitting or surface-emitting, and the divergence angle of the volume of the point light source and each viewpoint

(ii) related; referring to fig. 5, the pixel opening width is a, the width of the point light source is w, the spacer layer height is L, and the spacer layer refractive index is n1, which has the following geometrical relationship:

in particular, equality in this equation may be understood as being approximately equal to, i.e.,

it can be seen that the angle of divergence

The width a (pixel opening) of the control unit 20 in the first direction AB and the width w of the light-emitting source 10 in the first direction AB are in a direct proportional relationship, and are in an inverse proportional relationship with the height L of the spacer layer 3, so that the smaller the point light source volume is, the smaller the viewpoint divergence angle is, the more the number of viewpoints which can be realized in a certain viewing angle FOV is, as shown in fig. 9, the more the number of viewpoints which can be realized in the viewing angle FOV is, and if the viewpoint divergence angle is 8 °, the viewing angle FOV of 40 ° is divided into 5 viewpoints at most; if the viewpoint divergence angle is 4 degrees, the number of viewpoints is doubled within the same viewing angle FOV;

the point light sources are arranged periodically, one repeating unit F is a period, the size P of the period and the height L of the spacer layer jointly determine the size of an observation visual angle FOV, the FOV is approximately equal to 2n1arctan (P/2L), and a value P needs to be adopted properly according to the size of the FOV;

the number n of point light sources in one period is firstly limited by the refreshing frequency of the LCD panel, if the LCD panel is 120Hz, the number n of the light sources is less than or equal to 5, and the refreshing frequency of the LCD panel is higher and better in order to ensure the 24Hz visual persistence effect of human eyes; secondly, n also determines the number of viewpoints to be comprehensively considered;

the relative positions of the n point light sources in one period are related to the viewpoint arrangement;

C. the spacer layer 3 is used for enabling light of the point light source to be separated from each other at a certain distance in space, the light emitted by the point light source must be transmitted for a certain distance, the spacer layer 3 is used for ensuring a certain transmission distance, and the spacer layer 3 is a uniform, transparent and non-light-absorbing medium, preferably glass. The height L of the spacer layer 3 is related to the size of the field angle and the pixel emergent light divergence angle, and needs to be considered comprehensively;

D. the barrier structures 4 (BM shields) are required to be BM shields between adjacent repeating units F in order to prevent crosstalk between the light-emitting sources 10 of different repeating units F, and barrier shielding manners in fig. 1 or other manners may be selected to play a role in preventing crosstalk;

E. a liquid crystal cell (LCD panel) using an LCD panel without a backlight source, including a lower polarizer, a TFT array substrate, a liquid crystal layer, an opposite substrate and an upper polarizer, where a size p (i.e. a size of a pixel opening) of a light control unit 20 of the liquid crystal cell 20 determines an angle Ω between adjacent viewpoints, as shown in fig. 6, there is a geometric relationship Ω = np/L, specifically, the equal sign in the equation can be understood as being approximately equal to, i.e. Ω ≈ np/L, and a divergence angle between a pixel opening and a viewpoint is approximately equal to

Related, multi-view 3D display is guaranteed

Therefore, the number of pixels and the size of the opening of the LCD panel are comprehensively considered;

specifically, taking mobile phone display as an example, the size of a display panel of the mobile phone is 2 inches, the viewing distance is 360mm, the display structure provided by the embodiment of the present invention is used to implement naked eye 3D display with super multiple viewpoints, in 2D display, the resolution (PPI) of the mobile phone is generally about 250, that is, retina display (retina display) can be implemented, if 4*4 viewpoints are implemented by using the conventional naked eye 3D display technology, each viewpoint image implements retina/2 level, and the PPI of the screen is 500. By using the display structure of the embodiment of the invention, 500PPI and the display screen with the refresh frequency of 120Hz, 8*8 viewpoints can be realized, each viewpoint image realizes retina/2 level, and the structural parameters are shown in Table 1:

table 1 ultra-multi-view naked eye 3D display structure parameters

With reference to the repeating unit shown in fig. 2, one repeating unit includes 4*4 pixels and 2*2 point light sources, the arrangement is symmetrical about the center, the spacer layer 3 is made of glass, the refractive index n =1.52, and the height L =450um; the display units are periodically arranged, 240 by 240, and the view points formed at the viewing distance of 360mm when each light source with the same serial number is independently turned on are shown in fig. 10A to 10E, where fig. 10A is the view point distribution when the light source with serial number 1 is turned on, fig. 10B is the view point distribution when the light source with serial number 2 is turned on, fig. 10C is the view point distribution when the light source with serial number 3 is turned on, fig. 10D is the view point distribution when the light source with serial number 4 in fig. 4 is turned on, fig. 10E is the view point distribution when the 4 light sources in fig. 4 are simultaneously turned on, the 4 light sources are alternately turned on, the light source with serial number 1 is turned on for the first time to the next time as one cycle, and the refresh frequency of the point light source is 30Hz and exactly matches the refresh frequency of the screen 120 Hz. And the requirement of persistence of vision of human eyes can be met, and the human eyes can synthesize the viewpoint distribution diagram shown in fig. 10E in the brain. The total number of 8*8 viewpoints is 5 degrees, the included angle between adjacent viewpoints is 40 degrees and the field angle is 40 degrees, the distance between the 360mm observation distance and the adjacent viewpoints is about 30mm, the interpupillary distance between human eyes is about 60mm, and 3 viewpoints are arranged between two pupils, so that the picture can be more continuous.

The embodiment of the invention has the following beneficial effects: in the embodiment of the invention, the naked eye stereoscopic display device is provided with a plurality of repeating units F; each repeating unit F includes: a substrate 1 and a liquid crystal box 2 which are oppositely arranged, and a spacer layer 3 filled between the substrate 1 and the liquid crystal box 2; in each repeating unit F, a plurality of light sources 10 are disposed on one side of the substrate 1 facing the spacer layer 3, the liquid crystal cell 2 has a plurality of light control units 20, the light control units 20 are configured to control transmittance of incident light of the light sources 10, the light sources 10 emit light, the light control units 20 passing through the liquid crystal cell after a certain transmission distance are divided into several beams of light in different directions, different viewing angles are respectively formed, separation of the viewing angles is realized, and when displaying, an image with a certain parallax is loaded on each viewing angle, so that naked eye stereoscopic display can be realized. Therefore, by refreshing the time sequence, the number of the viewpoints is increased to n times of the original number on the premise of not reducing the resolution of the displayed image, the high-resolution stereoscopic display device has a good stereoscopic effect while forming a high image resolution, and the problem that the angular resolution and the spatial resolution of the stereoscopic display device in the prior art are mutually restricted is solved.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (8)

1. A naked eye stereoscopic display device is characterized by comprising a plurality of repeating units; the repeating unit includes: the liquid crystal display panel comprises a substrate, a liquid crystal box and a spacer layer, wherein the substrate and the liquid crystal box are oppositely arranged, and the spacer layer is filled between the substrate and the liquid crystal box; wherein the content of the first and second substances,

in each repeating unit, a plurality of light emitting sources are arranged on one side of the substrate facing the spacer layer, and the liquid crystal box is provided with a plurality of light control units which are configured to control the transmittance of incident light of the light emitting sources;

each repeating unit comprises: a × A of the light-emitting sources are arranged in A rows and A columns; each repeating unit comprises b × b light control units which are arranged in b rows and b columns; a the centers of the array formed by the luminous light sources coincide with the centers of b the array formed by the light control units;

the number of the light-emitting light sources n in each repeating unit satisfies the following relation:

n = H/H, wherein H represents the refreshing frequency of the liquid crystal box, H represents the frequency of the human visual persistence effect, n is greater than A × A, and n point light sources are alternatively lighted.

2. The autostereoscopic display device of claim 1, wherein a barrier structure is disposed between adjacent repeating units, and a height of the barrier structure in a direction perpendicular to the substrate is the same as a height of the spacer layer in the direction perpendicular to the substrate.

3. The autostereoscopic display device of claim 1, wherein a viewpoint divergence angle of each of the light control units

The included angle omega between the adjacent viewpoints satisfies the following relation:

wherein the content of the first and second substances,

Ω = np/L, n1 representing the refraction of the spacer layerA ratio, a represents a width of the light control unit in a first direction, w represents a width of the light emitting source in the first direction, L represents a thickness of the spacer layer in a direction perpendicular to the substrate, n represents the number of the light emitting sources in each of the repeating units, p represents a distance between centers of adjacent light control units, the light emitting sources are projected in a square shape on the front of the substrate, and the first direction is parallel to a frame of the square shape.

4. The autostereoscopic display device of claim 1, wherein the light emitting source is a micro light emitting diode.

5. The autostereoscopic display apparatus of claim 1, further comprising a pupil tracking device configured to track a movement position of a pupil of an eye of a user.

6. A display method of the autostereoscopic display apparatus according to any one of claims 1 to 5, comprising:

controlling the light-emitting light source to emit light;

and controlling the liquid crystal box to display a parallax image corresponding to the current light emitting source through the light control unit according to the current light emitting source.

7. The display method of claim 6, wherein the controlling the light emitting source to emit light comprises: and controlling the light-emitting light sources in the repeating unit to alternately emit light in sequence.

8. The display method of claim 6, wherein the autostereoscopic display apparatus further comprises a pupil tracking device;

the control of the light-emitting light source to emit light includes:

moving, by the pupil tracking device, a location of a pupil of an eye of a user;

and controlling the corresponding light-emitting light source to emit light according to the current pupil position.

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