Three-dimensional display device and display method

Abstract

The invention provides a three-dimensional display device and a display method. The three-dimensional display device comprises an eyeball tracking device, a processor and a display. The eyeball tracking device tracks a left eye position and a right eye position. The processor calculates a plurality of left-eye viewpoints and a plurality of right-eye viewpoints according to the left-eye position and the right-eye position, and generates a plurality of views. The display comprises a plurality of light emitting units and a plurality of light splitting units. The plurality of light emitting units emit a plurality of light beams. The plurality of light splitting units distribute a plurality of beams of light emitted by the plurality of light emitting units. The processor calculates the field angles and the optical paths of the plurality of light beams emitted by the plurality of light emitting units penetrating through the plurality of light splitting units so as to generate viewpoints through which the plurality of light beams pass. The processor performs light intensity comparison post-processing on views corresponding to at least one of the plurality of left eye viewpoints and at least one of the plurality of right eye viewpoints. The three-dimensional display device and the display method disclosed by the invention can provide a good three-dimensional image display method.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a display technology, in particular, a three-dimensional display device and a display method. BACKGROUND

[0002] In the process of displaying a three-dimensional image, conventional naked-eye three-dimensional displays need to use a light splitting device (e.g., a grating) to limit the exit angle of each pixel of the display, and need to use an algorithm to make the left eye and the right eye receive different parallax images. However, since the pixel points are not perfect point light sources, the light rays are not collimated, which causes crosstalk between the images seen by the left eye and the right eye, and the three-dimensional image becomes blurred and ghosted. SUMMARY

[0003] The present disclosure is directed to a three-dimensional display device and a display method, which can provide a good three-dimensional image display method.

[0004] According to an embodiment of the present disclosure, a three-dimensional display device includes an eye tracking device, a processor, and a display. The eye tracking device is used to track a left eye position and a right eye position. The processor is coupled to the eye tracking device and is used to calculate a plurality of left eye view points and a plurality of right eye view points according to the left eye position and the right eye position, and generate a plurality of views. The display is coupled to the eye tracking device and the processor. The display includes a plurality of light emitting units and a plurality of light splitting units. The plurality of light emitting units are used to emit a plurality of light beams. The plurality of light splitting units are used to distribute the plurality of light beams emitted by the plurality of light emitting units. The processor generates view points through which the plurality of light beams pass according to the calculated opening angle and optical path of the plurality of light beams emitted by the plurality of light emitting units passing through the plurality of light splitting units. At least one of the plurality of light beams passes through at least one of the plurality of left eye view points and at least one of the plurality of right eye view points simultaneously. The processor performs a light intensity comparison post-processing on the views corresponding to the at least one of the plurality of left eye view points and the at least one of the plurality of right eye view points.

[0005] According to an embodiment of the present disclosure, a display method includes the following steps: tracking a left eye position and a right eye position by an eye tracking device; calculating a plurality of left eye view points and a plurality of right eye view points according to the left eye position and the right eye position, and generating a plurality of views; emitting a plurality of light beams by a plurality of light emitting units of a display; distributing the plurality of light beams emitted by the plurality of light emitting units by a plurality of light splitting units of the display; generating view points through which the plurality of light beams pass according to the calculated opening angle and optical path of the plurality of light beams emitted by the plurality of light emitting units passing through the plurality of light splitting units, wherein at least one of the plurality of light beams passes through at least one of the plurality of left eye view points and at least one of the plurality of right eye view points simultaneously; and performing a light intensity comparison post-processing on the views corresponding to the at least one of the plurality of left eye view points and the at least one of the plurality of right eye view points.

[0006] Based on the above, the three-dimensional display device and the display method of the present disclosure can automatically adjust the light intensity of the view corresponding to the at least one left eye viewpoint or the at least one right eye viewpoint to reduce image crosstalk.

[0007] In order to make the above features and advantages of the present disclosure more obvious and easy to understand, the following specific embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is a schematic diagram of a three-dimensional display device of an embodiment of the present disclosure;

[0009] Figure 2 is a schematic diagram of the architecture of a display of an embodiment of the present disclosure;

[0010] Figure 3 is a flowchart of a display method of an embodiment of the present disclosure;

[0011] Figure 4 is a schematic diagram of the distribution of a plurality of viewpoints of an embodiment of the present disclosure;

[0012] Figure 5 is a schematic diagram of the distribution of a plurality of viewpoints of another embodiment of the present disclosure;

[0013] Figure 6 is a schematic diagram of the distribution of a plurality of viewpoints of another embodiment of the present disclosure;

[0014] Figure 7 is a schematic diagram of the distribution of a plurality of viewpoints of another embodiment of the present disclosure;

[0015] Figure 8 is a schematic diagram of the distribution of a plurality of viewpoints of another embodiment of the present disclosure;

[0016] Figure 9 is a schematic diagram of the distribution of a plurality of viewpoints of another embodiment of the present disclosure.

[0017] BRIEF DESCRIPTION OF DRAWINGS

[0018] 100: three-dimensional display device;

[0019] 110: processor;

[0020] 120: eye tracking device;

[0021] 130: display;

[0022] 201, 401: left eye;

[0023] 202, 402: right eye;

[0024] 210_1 to 210_N: light emitting units;

[0025] 220_1, 220_2, 220_3: light splitting units;

[0026] D1, D2, D3: directions;

[0027] B1, B2, B3: boundaries;

[0028] P_1 to P_M, P_(M+1) to P_K, P1 to P18: viewpoints;

[0029] L1 to L3, R1 to R3: regions;

[0030] Lf: reference line;

[0031] S310 to S360: steps. DETAILED DESCRIPTION

[0032] Reference will now be made to specific embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, identical or similar components shown in the figures and described in the specification are labeled with the same reference numerals.

[0033] Throughout this specification and the claims that follow, certain words are used to connote structural particularities. One skilled in the art will understand that device manufacturers can refer to an identical structure by different names. This document does not intend to distinguish between structures to which different names are applied. In the following description and claims, the words "comprise" and "include" and the like are used in an open-ended fashion, and thus should be interpreted to mean "including, but not limited to."

[0034] In some embodiments of the disclosure, the terms such as "coupled", "connected", and the like, with respect to the connection or junction, unless specifically stated otherwise, can refer to two structures being in direct contact, or can also refer to two structures not being in direct contact, with other structures being disposed between the two structures. Also, the terms with respect to the connection or junction can also include cases where both of the two structures are movable, or both of the two structures are fixed. In addition, the term "coupled" includes any direct and indirect electrical connection means.

[0035] The use of ordinal numbers such as "first", "second", etc. in the specification and claims is used to modify a member of a set and does not imply that the member has any precedence over another member of the set or that a member is ordered in time, in manufacture, etc. The use of ordinal numbers is merely used to distinguish one member of a set from another member of the set having the same name but distinguished by its ordinal number. The same word used in the claims and the specification can not be used as a limitation on each other, whereby a first member in the specification can be a second member in the claims. It is to be understood that the following examples can be combined, replaced, rearranged, mixed, etc. to form other examples without departing from the spirit of the disclosure.

[0036] The display device of the disclosure can include a virtual reality device, an augmented reality device, a head-up display module, a transparent display module, a sensing device, or a tiled device, but is not limited thereto. The display module can be a foldable or flexible electronic device. The display device can be a non-self-luminous display module or a self-luminous display module. The sensing device can be a sensing device that senses capacitance, light, heat, or ultrasound, but is not limited thereto. The display device can include electronic elements such as passive elements and active elements, such as capacitors, resistors, inductors, diodes, transistors, etc. The diode can include a light emitting diode or a photodiode. The light emitting diode can include, for example, an inorganic light emitting diode, an organic light emitting diode (OLED), a mini LED, a micro LED, or a quantum dot LED, but is not limited thereto. The tiled device can be, for example, a display tiled device, but is not limited thereto. It is to be noted that the display device can be any arrangement combination of the foregoing, but is not limited thereto.

[0037] It is to be understood that features of different examples can be combined, replaced, rearranged, mixed, etc. to form other examples without departing from the spirit of the disclosure.

[0038] Figure 1 FIG. 1 is a schematic view of a three-dimensional display device according to an embodiment of the disclosure. Referring to FIG. 1, the three-dimensional display device 100 can include a display module 110, a light source module 120, and a light guide module 130. Figure 1The three-dimensional display device 100 includes a processor 110, an eye tracking device 120, and a display 130. The processor 110 is coupled to the eye tracking device 120 and the display 130. In the embodiment, the three-dimensional display device 100 can be a naked-eye three-dimensional image display device with a three-dimensional image display function, but the present disclosure is not limited thereto. In the embodiment, the display 130 can display a three-dimensional image, and the eye tracking device 120 can track a left eye position and a right eye position of a user to calculate a plurality of left eye viewpoints and a plurality of right eye viewpoints on a view plane and generate a plurality of views for display at the plurality of left eye viewpoints and the plurality of right eye viewpoints.

[0039] In the embodiment, the processor 110 can include, for example, a central processing unit (CPU), a graphic processing unit (GPU), or other programmable general-purpose or special-purpose microprocessors (MPUs), digital signal processors (DSPs), application specific integrated circuits (ASICs), programmable logic devices (PLDs), other similar processing circuits, or combinations thereof.

[0040] In the embodiment, the eye tracking device 120 can include an image sensing element with a depth information sensing function. The eye tracking device 120 can be used to determine the left eye and the right eye of the user, and can locate the left eye position and the right eye position of the left eye and the right eye of the user in space.

[0041] In the embodiment, the display 130 can include, for example, liquid crystals, light emitting diodes. The light emitting diodes can include, for example, organic light emitting diodes (OLEDs), mini LEDs, micro LEDs, quantum dot light emitting diodes (QDs), fluorescence, phosphor, or other suitable materials, and the materials can be arranged in any combination, but are not limited thereto.

[0042] Figure 2 is a schematic diagram of the architecture of the display of an embodiment of the present disclosure. Referring to Figure 1 and Figure 2 , the following is described with reference to a partial schematic diagram of the display 130. In the embodiment,Figure 1 The display 130 can include a plurality of light emitting units 210_1-210_N and a plurality of light splitting units 220_1-220_3 as shown in FIG. 1. Figure 2 The display surface of the display 130 can be parallel to a plane formed by the direction D1 and the direction D2, and display a three-dimensional image toward the direction D3. The directions D1-D3 are perpendicular to each other. A user can view the display 130 toward a direction opposite to the direction D3. As shown in FIG. 1, the left eye 201 and the right eye 202 of the user can be at a distance Vd from the display surface of the display 130. In this embodiment, the light emitting units 210_1-210_N can correspond to a plurality of display pixels, and are used to emit a plurality of light beams. The light splitting units 220_1-220_3 can be a plurality of lenses, and are used to distribute the plurality of light beams emitted by at least a portion of the light emitting units 210_1-210_N. Figure 2

[0043] As shown in FIG. 1, the solid lines of the plurality of light beams can individually be incident on the left eye 201 and the right eye 202 of the user, or not in the line of sight of the left eye 201 and the right eye 202 of the user, and thus generally have a lower image crosstalk. Conversely, the dashed lines of the plurality of light beams can both be incident on the left eye 201 and the right eye 202 of the user, and thus have a higher image crosstalk. In addition, the effect of the image crosstalk can change accordingly as the positions of the left eye 201 and the right eye 202 of the user or the distance Vd between the left eye 201 and the right eye 202 of the user and the display surface of the display 130 change. Figure 2

[0044] Figure 3 FIG. 3 is a flowchart of a display method according to an embodiment of the present disclosure. Referring to FIGS. 1-3, the three-dimensional display device 100 can perform the following steps S310-S360. In step S310, the processor 110 can track the left eye position and the right eye position by the eye tracking device 120. In step S320, the processor 110 can calculate a plurality of left eye viewpoints P_1-P_M and a plurality of right eye viewpoints P_(M+1)-P_K according to the left eye position and the right eye position, and generate a plurality of views. In this embodiment, the processor 110 can detect the left eye 201 and the right eye 202 of the user by the eye tracking device 120, and the processor 110 calculates the plurality of left eye viewpoints P_1-P_M and the plurality of right eye viewpoints P_(M+1)-P_K according to the left eye position of the left eye 201 and the right eye position of the right eye 202, and generates a plurality of views. As shown in FIG. 3, the processor 110 can perform the following steps S330-S360. Figure 1 Figure 3 Figure 2 ​​​​As shown, the middle reference line B2 of the left eye view points P_1~P_M and the right eye view points P_(M+1)~P_K can be determined by taking the middle line of the positions of the left eye 201 and the right eye 202 of the user. The boundary B1 of the left eye view points P_1~P_M and the boundary B2 of the right eye view points P_(M+1)~P_K can be determined by the opening angle and the optical path of the light splitting unit 220_2.

[0045] At step S330, the processor 110 can emit the multiple beams of light through the light emitting units 210_1~210_N of the display 130. At step S340, the light splitting units 220_1~220_3 of the display 130 can distribute the multiple beams of light emitted by the light emitting units 210_1~210_N. At step S350, the processor 110 can calculate the view points through which the multiple beams of light emitted by the light emitting units 210_1~210_N pass according to the opening angle and the optical path of the light splitting units 220_1~220_3, wherein at least one of the multiple beams of light passes through at least one of the left eye view points P_1~P_M and at least one of the right eye view points P_(M+1)~P_K at the same time. In this embodiment, the processor 110 can calculate the view points through which the multiple beams of light emitted by at least part of the light emitting units 210_1~210_N pass according to the opening angle and the optical path of the light splitting unit 220_2 first, and generate the view points through which the multiple beams of light pass. In this embodiment, at least one of the multiple beams of light can pass through at least one of the left eye view points P_1~P_M and at least one of the right eye view points P_(M+1)~P_K at the same time, in other words, the left eye 201 and the right eye 202 of the user can view the image with crosstalk.

[0046] At step S360, the post-processing of the light intensity of the views corresponding to at least one of the left eye view points and at least one of the right eye view points is performed. In this embodiment, the processor 110 of this embodiment can perform the post-processing of the light intensity of the views corresponding to at least one of the left eye view points P_1~P_M and at least one of the right eye view points P_(M+1)~P_K to effectively improve the problem of image crosstalk. For this, the specific implementation of the post-processing of the light intensity of the views will be specifically described in the following embodiments.

[0047] Figure 4 is a distribution diagram of the view points of an embodiment of the present disclosure. Referring to Figure 1 and Figure 4 In this embodiment, the processor 110 can calculate the left eye view points P1~P9 and the right eye view points P10~P18 according to the left eye position of the left eye 401 and the right eye position of the right eye 402. As shown, the left eye view points P1~P9 and the right eye view points P10~P18 can be determined by taking the middle line of the positions of the left eye 401 and the right eye 402 of the user. Figure 4As shown, the middle reference line B2 of the left eye view points P1-P9 and the right eye view points P10-P18 can be determined by taking the middle line of the positions of the left eye 401 and the right eye 402 of the user. The boundary B1 of the left eye view points P1-P9 and the boundary B2 of the right eye view points P10-P18 can be determined according to the opening angle of the corresponding light splitting unit and the optical path.

[0048] In the present embodiment, the left eye view points P1-P9 and the right eye view points P10-P18 can be evenly distributed on the reference line Lf parallel to the viewing plane. In the present embodiment, the processor 110 can select at least one of the left eye view points P1-P9 as a left standard view point, wherein the left standard view point can correspond to the light intensity of a left standard view. Also, the processor 110 can select at least one of the right eye view points P10-P18 as a right standard view point, wherein the right standard view point can correspond to the light intensity of a right standard view. In the present embodiment, the processor 110 can perform the comparison and processing of the light intensity of the views corresponding to at least one of the left eye view points P1-P9 and at least one of the right eye view points P10-P18 according to the following equations (1) and (2).

[0049] Rv ′ = Rv - |Rv - Ls| x Ra …… equation (1)

[0050] Lv ′ = Lv - |Lv - Rs| x La …… equation (2)

[0051] In the above equations (1) and (2), Rv’ is the comparison and processed light intensity of the view corresponding to any one of the right eye view points P10-P18. Rv is the light intensity of the view corresponding to any one of the right eye view points P10-P18. Ls is the light intensity of the left standard view corresponding to the left standard view point. Ra is the first proportional value. Lv’ is the comparison and processed light intensity of the view corresponding to any one of the left eye view points P1-P9. Lv is the light intensity of the view corresponding to any one of the left eye view points P1-P9. Rs is the light intensity of the right standard view corresponding to the right standard view point. La is the second proportional value. In the present embodiment, the first proportional value can be proportional to the right eye crosstalk rate, and the second proportional value can be proportional to the left eye crosstalk rate.

[0052] In this embodiment, the processor 110 may first define high crosstalk regions and low crosstalk regions based on the left eye position of the left eye 401 and the right eye position of the right eye 402, so as to perform post-processing of light intensity comparison on the view corresponding to the high crosstalk region. Specifically, the processor 110 may first calculate multiple crosstalk rates among the multiple beams of light emitted by the multiple light-emitting units of the display 130, and define the viewpoint region corresponding to the portion of the multiple crosstalk rates that is greater than or equal to a first crosstalk rate threshold and less than or equal to a second crosstalk rate threshold as a high crosstalk region, and define the viewpoint region corresponding to the portion of the multiple crosstalk rates that is less than the first crosstalk rate threshold and greater than the second crosstalk rate threshold as a low crosstalk region. In one embodiment, the first crosstalk rate threshold may be, for example, 5%, and the second crosstalk rate threshold may be, for example, 95%, but this disclosure is not limited thereto.

[0053] In this regard, such as Figure 4 As shown, region L2 corresponding to the pupil range of the left eye 401 can be a low crosstalk region, and regions L1 and L3 on both sides of the pupil range of the left eye 401 can be high crosstalk regions. Region R2 corresponding to the pupil range of the right eye 402 can be a low crosstalk region, and regions R1 and R3 on both sides of the pupil range of the right eye 402 can be high crosstalk regions. However, the definition of the high crosstalk region and the low crosstalk region disclosed herein is not limited thereto. In this embodiment, the processor 110 can perform post-processing on the light intensity comparison of at least one of the multiple left-eye viewpoints and at least one of the multiple right-eye viewpoints in the high crosstalk region.

[0054] It should be noted that in one embodiment, when the high crosstalk region is located between the left eye center and the right eye center, and the view points located at the high crosstalk region are more than two, the first ratio values corresponding to different right eye view points decrease as approaching the right eye position, and the second ratio values corresponding to different left eye view points decrease as approaching the left eye position. Also, when the high crosstalk region is located outside the two eyes, and the view points located at the high crosstalk region are more than two, the first ratio values corresponding to different right eye view points decrease as approaching the right eye position, and the second ratio values corresponding to different left eye view points decrease as approaching the left eye position. In other words, the view points close to the pupil range can have a smaller crosstalk rate, and thus can have a lower ratio value. For example, the view point P7 corresponds to a ratio value of 5%, for example. The view point P8 corresponds to a ratio value of 10%, for example. The view point P9 corresponds to a ratio value of 20%, for example. The view point P10 corresponds to a ratio value of 20%, for example. The view point P11 corresponds to a ratio value of 10%, for example. The view point P12 corresponds to a ratio value of 5%, for example. For another example, the view point P1 corresponds to a ratio value of 20%, for example. The view point P2 corresponds to a ratio value of 10%, for example. The view point P3 corresponds to a ratio value of 5%, for example. The view point P16 corresponds to a ratio value of 5%, for example. The view point P17 corresponds to a ratio value of 10%, for example. The view point P18 corresponds to a ratio value of 20%, for example. However, the numerical definition of the ratio values of the present disclosure is not limited thereto. In another embodiment, different right eye view points can also correspond to the same first ratio value, and different left eye view points can also correspond to the same second ratio value.

[0055] In the present embodiment, the processor 110 can compare the region L3 with high crosstalk and the region R1, and adjust the light intensity of the view corresponding to at least one of the view points in the region L3 and the region R1 according to the above-mentioned formula (1) and formula (2). For example, the view point P7 corresponds to a view with a light intensity of 128 (i.e. a brightness value or a gray scale value). The view point P8 corresponds to a view with a light intensity of 255. The view point P9 corresponds to a view with a light intensity of 54. The view point P10 corresponds to a view with a light intensity of 255. The view point P11 corresponds to a view with a light intensity of 128. The view point P12 corresponds to a view with a light intensity of 64. The processor 110 can select the view point P8 as the left standard view point, and can select the view point P12 as the right standard view point.

[0056] For example, all view points correspond to the same ratio value of 0.5 (i.e. 50%). For the view point P7, the processor 110 can subtract the light intensity of the view point P7, i.e. 128, from the light intensity of the view point P12 (the right standard view point), i.e. 64, take the absolute value to obtain a value of “64”, and then multiply the value of “64” by the ratio value of 0.5 to obtain a value of “32”. Therefore, the light intensity of the processed view point P7 is “96” (i.e. = 128-32).

[0057] For the viewpoint P8, the processor 110 can subtract the light intensity 255 of the viewpoint P8 from the light intensity 64 of the viewpoint P12 (right standard viewpoint) and take the absolute value to obtain a value "191" according to the above equation (2), and multiply the value "191" by the proportional value 0.5 to obtain a value "96" (since the luminance value has no decimal value, it is the rounding result of 95.5). Thus, the light intensity of the processed viewpoint P8 is "159" (i.e., = 255-96).

[0058] For the viewpoint P9, the processor 110 can subtract the light intensity 54 of the viewpoint P9 from the light intensity 64 of the viewpoint P12 (right standard viewpoint) and take the absolute value to obtain a value "10" according to the above equation (2), and multiply the value "10" by the proportional value 0.5 to obtain a value "5". Thus, the light intensity of the processed viewpoint P9 is "49" (i.e., = 54-5).

[0059] For the viewpoint P10, the processor 110 can subtract the light intensity 255 of the viewpoint P10 from the light intensity 255 of the viewpoint P8 (left standard viewpoint) and take the absolute value to obtain a value "0" according to the above equation (1). Thus, the light intensity of the viewpoint P10 is maintained as 255.

[0060] For the viewpoint P11, the processor 110 can subtract the light intensity 128 of the viewpoint P11 from the light intensity 255 of the viewpoint P8 (left standard viewpoint) and take the absolute value to obtain a value "127" according to the above equation (1), and multiply the value "127" by the proportional value 0.5 to obtain a value "64" (i.e., the rounding result of 63.5). Thus, the light intensity of the processed viewpoint P11 is "64" (i.e., = 128-64).

[0061] For the viewpoint P12, the processor 110 can subtract the light intensity 64 of the viewpoint P12 from the light intensity 255 of the viewpoint P8 (left standard viewpoint) and take the absolute value to obtain a value "191" according to the above equation (1), and multiply the value "191" by the proportional value 0.5 to obtain a value "96" (i.e., the rounding result of 95.5). Thus, the light intensity of the processed viewpoint P11 is "0" (since the luminance value is the lowest as 0).

[0062] In this way, the processor 110 can appropriately reduce the light intensity of the views corresponding to the viewpoints of the region L3 and the region R1 having high crosstalk, so as to effectively reduce the influence of crosstalk.

[0063] However, in an embodiment, when the absolute value of the difference between the light intensity of the view corresponding to any one of the right eye view points P10-P12 and the light intensity of the left standard view corresponding to the left standard view point is less than a first threshold value, the processor 110 can also maintain the light intensity of the view corresponding to any one of the right eye view points P10-P12. Also, when the absolute value of the difference between the light intensity of the view corresponding to any one of the left eye view points P7-P9 and the light intensity of the right standard view corresponding to the right standard view point is less than a second threshold value, the processor 110 also maintains the light intensity of the view corresponding to any one of the left eye view points P7-P9. It should be noted that the first threshold value and the second threshold value can be the minimum one of the currently compared light intensity and the standard light intensity, but the present disclosure is not limited thereto. In an embodiment, the first threshold value and the second threshold value can also be other preset values.

[0064] Further illustrated by the above example, for the view point P7, the processor 110 can obtain a value "64" by subtracting the light intensity 64 of the view point P12 (right standard view point) from the light intensity 128 of the view point P7 and taking the absolute value according to the above formula (2), and then multiplying the value "64" by the proportion value 0.5 to obtain a value "32". Therefore, the processed light intensity of the view point P7 is "96" (i.e. = 128-32).

[0065] For the view point P8, the processor 110 can obtain a value "191" by subtracting the light intensity 64 of the view point P12 (right standard view point) from the light intensity 255 of the view point P8 and taking the absolute value according to the above formula (2), and then multiplying the value "191" by the proportion value 0.5 to obtain a value "96" (since the brightness value has no decimal value, it is the rounding result of 95.5). Therefore, the processed light intensity of the view point P8 is "159" (i.e. = 255-96).

[0066] For the view point P9, the processor 110 can obtain a value "10" by subtracting the light intensity 64 of the view point P12 (right standard view point) from the light intensity 54 of the view point P9 and taking the absolute value according to the above formula (2). For this, since the value "10" is less than the light intensity 54 of the view point P9, the processor 110 maintains the light intensity of the view point P9.

[0067] For the view point P10, the processor 110 can obtain a value "0" by subtracting the light intensity 255 of the view point P8 (left standard view point) from the light intensity 255 of the view point P10 and taking the absolute value according to the above formula (1). Therefore, the light intensity of the view point P10 is maintained as 255.

[0068] For viewpoint P11, processor 110 can subtract the light intensity 128 of viewpoint P11 from the light intensity 255 of viewpoint P8 (left standard viewpoint) according to the above formula (1) and take the absolute value to obtain the value "127". Since the value "127" is less than the light intensity 128 of viewpoint P11, processor 110 maintains the light intensity of viewpoint P11.

[0069] For viewpoint P12, processor 110 can subtract the light intensity 64 of viewpoint P12 from the light intensity 255 of viewpoint P8 (left standard viewpoint) according to the above formula (1), and take the absolute value to obtain the value "191". Then, multiply the value "191" by the ratio value 0.5 to obtain the value "96" (i.e., the rounded result of 95.5). Therefore, the light intensity of viewpoint P11 after processing is "0" (since the minimum brightness value is 0).

[0070] In this way, the processor 110 can also appropriately reduce the light intensity of the views corresponding to multiple viewpoints in the region L3 and region R1 with high crosstalk, so as to effectively reduce the impact of crosstalk.

[0071] In another embodiment disclosed herein, the processor 110 may also compare regions L1 and R3 with high crosstalk, and adjust the light intensity of the view corresponding to at least one viewpoint in regions L1 and R3 according to the above equations (1) and (2). The method of adjusting the light intensity of the view corresponding to the viewpoint in regions L1 and R3 can be deduced by analogy as illustrated above, and therefore will not be elaborated further.

[0072] Figure 5 This is a schematic diagram showing the distribution of multiple viewpoints according to another embodiment of this disclosure. (See reference) Figure 1 as well as Figure 5 In one embodiment, the left-eye viewpoints P1-P9 and the right-eye viewpoints P10-P18 may also be non-uniformly distributed on the reference line Lf parallel to the viewing plane. Therefore, the left-eye viewpoints P1-P3 and P7-P9 can be moved closer to the pupil region of the left eye 401 to reduce the ghosting effect of the image seen by the left eye 401. Similarly, the right-eye viewpoints P10-P12 and P16-P18 can be moved closer to the pupil region of the right eye 402 to reduce the ghosting effect of the image seen by the right eye 402. Furthermore, the processor 110 can... Figure 5 The left eye viewpoints P1-P9 and the right eye viewpoints P10-P18 are also performed as described above. Figure 4 The light intensity comparison and processing described in the embodiment effectively improves image crosstalk seen by the left eye 401 and the right eye 402.

[0073] Figure 6 This is a schematic diagram showing the distribution of multiple viewpoints according to another embodiment of this disclosure. (See reference) Figure 1 as well asFigure 6 In one embodiment, the left-eye viewpoints P1-P7 and the right-eye viewpoints P8-P14 are distributed on a reference line Lf parallel to the viewing plane. Furthermore, the number of viewpoints in region L3 (high crosstalk region) is greater than the number of viewpoints in region L1 (high crosstalk region). The number of viewpoints in region R1 (high crosstalk region) is greater than the number of viewpoints in region R3 (high crosstalk region). The processor 110 can then... Figure 6 The left eye visual points P1, P5-P7 and the right eye visual points P8-P10, P14 are performed in the same manner as described above. Figure 4 The light intensity comparison and processing described in the embodiment effectively improves image crosstalk seen by the left eye 401 and the right eye 402.

[0074] Figure 7 This is a schematic diagram showing the distribution of multiple viewpoints according to another embodiment of this disclosure. (See reference) Figure 1 as well as Figure 7 In one embodiment, the left-eye viewpoints P1-P5 and the right-eye viewpoints P6-P10 are distributed on a reference line Lf parallel to the viewing plane. Furthermore, the number of viewpoints in region L1 (high crosstalk region) is equal to the number of viewpoints in region R3 (high crosstalk region). The processor 110 can then... Figure 7 The left eye viewpoints P1 and P5, and the right eye viewpoints P9 and P10 are performed in the same manner as described above. Figure 4 The light intensity comparison and processing described in the embodiment effectively improves image crosstalk seen by the left eye 401 and the right eye 402.

[0075] Figure 8 This is a schematic diagram showing the distribution of multiple viewpoints according to another embodiment of this disclosure. (See reference) Figure 1 as well as Figure 7 In one embodiment, the left-eye viewpoints P1-P3, the central viewpoint P4, and the right-eye viewpoints P5-P7 are distributed on a reference line Lf parallel to the viewing plane. Furthermore, the number of viewpoints in region L1 (high crosstalk region) is equal to the number of viewpoints in region R3 (high crosstalk region). The processor 110 can then... Figure 8 The left eye viewpoints P1 and P3, and the right eye viewpoints P5 and P7 are performed in the same manner as described above. Figure 4 The light intensity comparison and processing described in the embodiment effectively reduces image crosstalk seen by the left eye 401 and the right eye 402. However, for the central focal point P4, the processor 110 can also treat the central focal point P4 as either the right eye viewpoint or the left eye viewpoint and process it accordingly.

[0076] Figure 9 This is a schematic diagram showing the distribution of multiple viewpoints according to another embodiment of this disclosure. (See reference)Figure 1 and Figure 9 In one embodiment, the left eye view points P1-P7 and the right eye view points P8-P14 are distributed on the reference line Lf which is parallel to the viewing plane. Also, the number of view points in the region L1 (high crosstalk region) is greater than the number of view points in the region L3 (high crosstalk region). The number of view points in the region R3 (high crosstalk region) is greater than the number of view points in the region R1 (high crosstalk region). In this regard, the processor 110 can perform the light intensity comparison and processing as described above for the left eye view points P1-P3, P7 and the right eye view points P8, P12-P14 of the display device 100. Figure 9 Figure 4 In one embodiment, the left eye view points P1-P7 and the right eye view points P8-P14 are distributed on the reference line Lf which is parallel to the viewing plane. Also, the number of view points in the region L1 (high crosstalk region) is greater than the number of view points in the region L3 (high crosstalk region). The number of view points in the region R3 (high crosstalk region) is greater than the number of view points in the region R1 (high crosstalk region). In this regard, the processor 110 can perform the light intensity comparison and processing as described above for the left eye view points P1-P3, P7 and the right eye view points P8, P12-P14 of the display device 100.

[0077] In some embodiments of the present disclosure, if a reference pattern is inputted to a display device without the light splitting unit (lens layer), the number of boundaries of the pattern displayed by the display device is calculated to determine whether the distribution of the corresponding view points matches the distribution manners described in the above embodiments of the present disclosure.

[0078] In some embodiments of the present disclosure, the gray scale values of 0-255 are sequentially inputted to all the view points in the high crosstalk region of a display device. If there are right standard view points and left standard view points whose light intensities remain unchanged after adjustment, the light intensities of the right standard view points and the left standard view points remain unchanged. Then, the light intensities of the right standard view points and the left standard view points are used to generate a plurality of light intensities corresponding to different brightness of images inputted to the display device, which are substituted into the above equations (1) and (2) to obtain a plurality of equations of the above equations (1) and (2). Thus, the equations can be solved by simultaneous operation to obtain the corresponding proportional values, which match the light intensity adjustment manners described in the above embodiments.

[0079] In summary, the three-dimensional display device and the display method of the present disclosure can define the high crosstalk region and the low crosstalk region of the viewing plane, and compare the light intensity of at least one of the left eye view points and the right eye view points in the high crosstalk region with the light intensity of the corresponding standard view points to automatically adjust and reduce the light intensity of at least one of the left eye view points and the right eye view points, so as to effectively reduce the image crosstalk of at least one of the left eye and the right eye.

[0080] ​It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A three-dimensional display device, characterized by comprising: Comprising: an eye tracking device for tracking a left eye position and a right eye position; a processor coupled to the eye tracking device and configured to calculate a plurality of left eye view points and a plurality of right eye view points according to the left eye position and the right eye position, and to generate a plurality of views; and a display coupled to the eye tracking device and the processor, and comprising: a plurality of light emitting units for emitting a plurality of light beams; and a plurality of light splitting units for splitting the plurality of light beams emitted by the plurality of light emitting units, wherein the processor generates a plurality of view points through which the plurality of light beams pass according to the angles of view and the optical path lengths of the plurality of light beams emitted by the plurality of light emitting units passing through the plurality of light splitting units, wherein at least one of the plurality of light beams passes through at least one of the plurality of left eye view points and at least one of the plurality of right eye view points at the same time, wherein the processor performs a comparison of the light intensities of the views corresponding to the at least one of the plurality of left eye view points and the at least one of the plurality of right eye view points.

2. The three-dimensional display apparatus of claim 1, wherein The processor selects a left standard view point from the at least one of the plurality of left eye view points, the left standard view point corresponding to a light intensity of a left standard view, and the processor selects a right standard view point from the at least one of the plurality of right eye view points, the right standard view point corresponding to a light intensity of a right standard view, wherein the processor performs a comparison of the light intensities of the views corresponding to the at least one of the plurality of left eye view points and the at least one of the plurality of right eye view points according to the following equations (1) and (2), Rv' = Rv - |Rv - Ls| x Ra …… Equation (1) Lv' = Lv - |Lv - Rs| x La …… Equation (2) wherein Rv' is the comparison-processed light intensity of the view corresponding to any one of the plurality of right eye view points, Rv is the light intensity of the view corresponding to any one of the plurality of right eye view points, Ls is the light intensity of the left standard view corresponding to the left standard view point, Ra is a first proportional value, Lv' is the comparison-processed light intensity of the view corresponding to any one of the plurality of left eye view points, Lv is the light intensity of the view corresponding to any one of the plurality of left eye view points, Rs is the light intensity of the right standard view corresponding to the right standard view point, and La is a second proportional value.

3. The three-dimensional display apparatus of claim 2, wherein When the value obtained by subtracting the light intensity of the left standard view corresponding to the left standard view point from the light intensity of the view corresponding to any one of the plurality of right eye view points and taking the absolute value is less than a first threshold value, the processor maintains the light intensity of the view corresponding to any one of the plurality of right eye view points, wherein when the value obtained by subtracting the light intensity of the right standard view corresponding to the right standard view point from the light intensity of the view corresponding to any one of the plurality of left eye view points and taking the absolute value is less than a second threshold value, the processor maintains the light intensity of the view corresponding to any one of the plurality of left eye view points.

4. The three-dimensional display apparatus of claim 2, wherein The first proportional value is proportional to a right eye crosstalk rate, and the second proportional value is proportional to a left eye crosstalk rate.

5. The three-dimensional display apparatus of claim 2, wherein The processor calculates a plurality of crosstalk rates in the plurality of beams of light according to the left eye position and the right eye position, and defines a viewpoint region corresponding to a portion of the plurality of crosstalk rates greater than or equal to a first crosstalk rate threshold and less than or equal to a second crosstalk rate threshold as a high crosstalk region, and defines a viewpoint region corresponding to a portion of the plurality of crosstalk rates less than the first crosstalk rate threshold and greater than the second crosstalk rate threshold as a low crosstalk region, wherein the processor performs a light intensity comparison post-processing on the views corresponding to the at least one of the plurality of left eye viewpoints and the at least one of the plurality of right eye viewpoints in the high crosstalk region.

6. The three-dimensional display apparatus of claim 5, wherein When the high crosstalk region is located between the left eye center and the right eye center, and the number of viewpoints in the high crosstalk region is greater than two, a plurality of first proportion values corresponding to different right eye viewpoints decrease as they approach the right eye position, and a plurality of second proportion values corresponding to different left eye viewpoints decrease as they approach the left eye position.

7. The three-dimensional display apparatus of claim 5, wherein When the high crosstalk region is located outside the eyes, and the number of viewpoints in the high crosstalk region is greater than two, a first proportion value corresponding to a different right eye viewpoint decreases as it approaches the right eye position, and a second proportion value corresponding to a different left eye viewpoint decreases as it approaches the left eye position.

8. The three-dimensional display apparatus of claim 1, wherein The plurality of left eye viewpoints and the plurality of right eye viewpoints are non-uniformly distributed on a reference line.

9. The three-dimensional display apparatus of claim 1, wherein, The number of the plurality of left eye viewpoints and the plurality of right eye viewpoints between the left eye position and the right eye position is greater than or equal to the number of the plurality of left eye viewpoints and the plurality of right eye viewpoints outside the left eye position and the right eye position.

10. A display method characterized by comprising: comprising: tracking a left eye position and a right eye position by an eye tracking device; calculating a plurality of left eye viewpoints and a plurality of right eye viewpoints according to the left eye position and the right eye position, and generating a plurality of views; emitting a plurality of beams of light by a plurality of light emitting units of a display; distributing the plurality of beams of light emitted by the plurality of light emitting units by a plurality of light splitting units of the display; calculating a plurality of viewpoints through which the plurality of beams of light emitted by the plurality of light emitting units pass according to a solid angle and an optical path length of the plurality of beams of light emitted by the plurality of light emitting units passing through the plurality of light splitting units, wherein at least one of the plurality of beams of light passes through at least one of the plurality of left eye viewpoints and at least one of the plurality of right eye viewpoints at the same time; and performing a light intensity comparison post-processing on the views corresponding to the at least one of the plurality of left eye viewpoints and the at least one of the plurality of right eye viewpoints.

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