CN109188803B - 3D display device and electronic equipment - Google Patents
3D display device and electronic equipment Download PDFInfo
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- CN109188803B CN109188803B CN201811113216.3A CN201811113216A CN109188803B CN 109188803 B CN109188803 B CN 109188803B CN 201811113216 A CN201811113216 A CN 201811113216A CN 109188803 B CN109188803 B CN 109188803B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—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 involving lenticular arrays
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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Abstract
The invention discloses a 3D display device and electronic equipment. The 3D display device comprises a backlight layer, at least one modulation layer, a display layer, an eyeball tracking module and a signal processing module; the backlight layer is used for providing backlight illumination; the modulation layer comprises a first modulation layer and a second modulation layer; the display layer comprises a first display layer and a second display layer; the eyeball tracking module comprises a left-eye eyeball tracking module and a right-eye eyeball tracking module; the signal processing module is respectively electrically connected with the left eye eyeball tracking module, the right eye eyeball tracking module, the first modulation layer, the second modulation layer, the first display layer and the second display layer, and forms a three-dimensional image based on light field display according to the left eye eyeball position information and the right eye eyeball position information; the signal processing module is also used for forming a 2D left view pattern and a 2D right view pattern. The 3D display device provided by this embodiment can reduce the amount of computation of the signal processing module while maintaining a good display effect of the 3D display device.
Description
Technical Field
The embodiment of the invention relates to the technical field of 3D display, in particular to a 3D display device and electronic equipment.
Background
As a new display technology, 3D display is becoming an attractive advanced technology field, and is increasingly used in the fields of television broadcasting, video games, medical care, education, and the like. 3D display has been developed from glasses-type 3D movies and the like to glasses-type 3D display for televisions, PCs, smart phones, tablet terminals.
However, in terms of appearance, most of the 3D display technologies at present are still based on binocular parallax, and have certain special requirements on the positions of the eyes of the user when the user watches the 3D display technologies, and the problems of vertigo and the like are easily caused when the user watches the 3D display technologies for a long time, so that the user experience is not ideal. In order to improve the display effect of 3D display and eliminate the dizzy problem of watching in ordinary 3D display, the light field display technology is produced at present, and the light field display is "true" 3D technology, is praised as the next generation 3D display technology.
Disclosure of Invention
The invention provides a 3D display device and electronic equipment, which are used for improving the display effect of the 3D display device.
In a first aspect, an embodiment of the present invention provides a 3D display device, including a backlight layer, at least one modulation layer, a display layer, an eye tracking module, and a signal processing module, where the backlight layer, the at least one modulation layer, and the display layer are sequentially arranged in parallel, and the display layer is located on a side close to an observer;
the backlight layer is used for providing backlight illumination;
the modulation layer comprises a first modulation layer and a second modulation layer;
the display layer comprises a first display layer and a second display layer; the first display layer is positioned on one side of the first modulation layer close to an observer, and the second display layer is positioned on one side of the second modulation layer close to the observer;
the eyeball tracking module comprises a left-eye eyeball tracking module and a right-eye eyeball tracking module; the left eye eyeball tracking module is used for acquiring left eye eyeball position information of the observer, and the right eye eyeball tracking module is used for acquiring right eye eyeball position information of the observer;
the signal processing module is respectively electrically connected with the left eye eyeball tracking module, the right eye eyeball tracking module, the first modulation layer, the second modulation layer, the first display layer and the second display layer, and is configured to receive the left eye eyeball position information and the right eye eyeball position information, determine a first modulation layer central gazing region in the first modulation layer and a first display layer central gazing region in the first display layer according to the left eye eyeball position information, control the first modulation layer central gazing region to display a first modulation layer central pattern, and control the first display layer central gazing region to display a first display layer central pattern, where the first modulation layer central pattern and the first display layer central pattern form a left eye stereoscopic image based on light field display; determining a second modulation layer center gazing area in the second modulation layer and a second display layer center gazing area in the second display layer according to the right eye eyeball position information, controlling the second modulation layer center gazing area to display a second modulation layer center pattern, and controlling the second display layer center gazing area to display a second display layer center pattern, wherein the second modulation layer center pattern and the second display layer center pattern form a right eye stereoscopic image based on light field display;
the signal processing module is further configured to control other areas of the first modulation layer, other than the center gazing area of the first modulation layer, in the first modulation layer to display other patterns of the first modulation layer, and control other areas of the first display layer, other than the center gazing area of the first display layer, in the first display layer to display other patterns of the first display layer, where the other patterns of the first modulation layer and the other patterns of the first display layer form a 2D left view pattern; controlling other areas of the second modulation layer other than the second modulation layer center gazing area in the second modulation layer to display other patterns of the second modulation layer, and controlling other areas of the second display layer other than the second display layer center gazing area in the second display layer to display other patterns of the second display layer, wherein the other patterns of the second modulation layer and the other patterns of the second display layer form a 2D right view pattern;
the first modulation layer central watching region and the first display layer central watching region are arranged corresponding to a left eye eyeball central region of the observer, and the other first modulation layer regions and the other first display layer regions are arranged corresponding to a left eye eyeball non-central region of the observer; the second modulation layer center gazing area and the second display layer center gazing area are arranged corresponding to a right eyeball center area of the observer, and the other areas of the second modulation layer and the other areas of the second display layer are arranged corresponding to a right eyeball non-center area of the observer.
The signal processing module is used for controlling the first modulation layer center watching area to form a first modulation layer modulation grating, and a first modulation layer center pattern is formed through the first modulation layer modulation grating;
the signal processing module is used for controlling the central watching area of the first display layer to form a first display layer modulation grating, and forming a first display layer central pattern through the first display layer modulation grating;
the signal processing module is used for controlling the second modulation layer center watching area to form a second modulation layer modulation grating, and a second modulation layer center pattern is formed through the second modulation layer modulation grating;
the signal processing module is used for controlling the central watching area of the second display layer to form a second display layer modulation grating, and a second display layer central pattern is formed through the second display layer modulation grating.
Further, the other patterns of the first modulation layer and the other patterns of the second modulation layer are in a light-transmitting state; the other patterns of the first display layer are 2D left view patterns, and the other patterns of the second display layer are 2D right view patterns.
Further, the signal processing module is electrically connected to the backlight layer and configured to determine a first light-emitting brightness region and a second light-emitting brightness region in the backlight layer according to the left-eye eyeball position information and the right-eye eyeball position information of the observer; the first light-emitting brightness area comprises a left-eye light-emitting brightness area and a right-eye light-emitting brightness area, the left-eye light-emitting brightness area is arranged corresponding to the left-eye eyeball central area, the right-eye light-emitting brightness area is arranged corresponding to the right-eye eyeball central area, and the second light-emitting brightness area is arranged corresponding to the left-eye eyeball non-central area and the left-eye eyeball non-central area;
the light-emitting brightness of the first light-emitting brightness region is greater than that of the second light-emitting brightness region, or the light-emitting brightness of the first light-emitting brightness region is less than that of the second light-emitting brightness region.
Further, near-eye glasses are also included;
the near-eye glasses are used for receiving image light provided by the 3D display device.
Further, the backlight layer comprises at least one of an LED array, a mini LED array, a Micro LED array LCD backlight unit and a projection device, wherein the LCD backlight unit comprises a backlight module and an LCD display panel.
Further, the modulation layer is an LCD display panel, and the display layer is an LCD display panel.
In a second aspect, an embodiment of the present invention further provides an electronic device, including the 3D display device according to any one of the first aspect.
The present embodiment provides a near-eye stereoscopic display image stereoscopic image at a position corresponding to the non-center region of the eyeball of the observer on the modulation layer and the display layer, and can reduce the data processing amount of the signal processing module. Meanwhile, the three-dimensional image based on light field display is provided in the modulation layer center watching region and the display layer center watching region corresponding to the eyeball center region of the observer, so that the image observed by the eyeball center region of the observer can be ensured to be the three-dimensional image displayed in the light field. Compared with the case that the whole modulation layer and the whole display layer are in light field display, the 3D display device provided by the embodiment can reduce the operation amount of the signal processing module, and compared with the case that the whole modulation layer and the whole display layer are in non-light field display, the 3D display device can keep better display effect.
Drawings
FIG. 1 is a schematic diagram of a 3D display formed of real objects provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of a light field display provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a 3D display device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of forming a light field display based left eye stereoscopic image according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a modulation grating of a first modulation layer according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a first modulation layer modulation grating and a first display layer modulation grating provided by an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a backlight layer provided in an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic diagram of a 3D display formed by real objects provided by an embodiment of the present invention, and fig. 2 is a schematic diagram of a light field display provided by an embodiment of the present invention. Alternatively, referring to fig. 1 and 2, when the emitted or reflected light of the real object 10 enters the human eye, the human eye may observe a real three-dimensional stereoscopic image. The light ray generated when the real object emits light or reflects light is simulated by modulating the light ray by the light field display modulation device 12, if the light ray modulated by the light field display modulation device 12 is the same as the light ray generated or reflected by the real object 10, the modulated light ray enters human eyes and then forms an image on the retina, and the human eyes can perceive that a virtual object 11 exists at a certain position in front of the eyes, which is the basic principle of light field display. Compared with a naked eye 3D display technology or a near-eye 3D display technology based on left-right eye parallax, 3D display based on light field display is closer to a real object, and the problems of dizziness and the like of an observer can be avoided. However, the light field display requires a large amount of calculation, the running cost under the existing software and hardware conditions is high, and the popularization and application are difficult.
The above is the core idea of the present invention, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
Fig. 3 is a schematic structural diagram of a 3D display device according to an embodiment of the present invention, and fig. 4 is a schematic diagram of a left-eye stereoscopic image formed based on light field display according to an embodiment of the present invention. Specifically, referring to fig. 3 and 4, the 3D display device includes a backlight layer 101, at least one modulation layer, a display layer, an eye tracking module and a signal processing module 105, where the backlight layer 101, the at least one modulation layer and the display layer are sequentially arranged in parallel, and the display screen is located on a side close to an observer; the backlight layer 101 is used to provide backlight illumination; the modulation layer includes a first modulation layer 112 and a second modulation layer 122; the display layers include a first display layer 113 and a second display layer 123; wherein the first display layer 113 is located on the side of the first modulation layer 112 close to the observer, and the second display layer 123 is located on the side of the second modulation layer 122 close to the observer; the eye tracking module includes a left eye tracking module 114 and a right eye tracking module 124; the left eye and eyeball tracking module 114 is configured to obtain left eye and eyeball position information of an observer, and the right eye and eyeball tracking module 124 is configured to obtain right eye and eyeball position information of the observer; the signal processing module 105 is electrically connected to the left eye and eyeball tracking module 114, the right eye and eyeball tracking module 124, the first modulation layer 112, the second modulation layer 122, the first display layer 113 and the second display layer 123, respectively, and is configured to receive left eye and eyeball position information and right eye and eyeball position information, determine the first modulation layer central gaze area 116 in the first modulation layer 112 and the first display layer central gaze area 118 in the first display layer 113 according to the left eye and eyeball position information, control the first modulation layer central gaze area 116 to display a first modulation layer central pattern, and control the first display layer central gaze area 118 to display a first display layer central pattern, where the first modulation layer central pattern and the first display layer central pattern form a left eye stereoscopic image based on light field display; determining a second modulation layer center gazing area 126 in the second modulation layer 122 and a second display layer center gazing area 128 in the second display layer 123 according to the right eye eyeball position information, controlling the second modulation layer center gazing area 126 to display a second modulation layer center pattern, and controlling the second display layer center gazing area 128 to display a second display layer center pattern, wherein the second modulation layer center pattern and the second display layer center pattern form a right eye stereoscopic image displayed based on a light field; the signal processing module 105 is further configured to control a first modulation layer other region 117 of the first modulation layer 112 other than the first modulation layer center gazing region 116 to display a first modulation layer other pattern, and control a first display layer other region 119 of the first display layer 113 other than the first display layer center gazing region 118 to display a first display layer other pattern, where the first modulation layer other pattern and the first display layer other pattern form a 2D left view pattern; controlling a second modulation layer other area 127 of the second modulation layer 122 other than the second modulation layer center gazing area 126 to display a second modulation layer other pattern, and controlling a second display layer other area 129 of the second display layer 123 other than the second display layer center gazing area 128 to display a second display layer other pattern, wherein the second modulation layer other pattern and the second display layer other pattern form a 2D right view pattern; wherein, the first modulation layer central gazing area 116 and the first display layer central gazing area 118 are arranged corresponding to the left eye eyeball central area of the observer, and the first modulation layer other area 117 and the first display layer other area 119 are arranged corresponding to the left eye eyeball non-central area of the observer; the second modulation layer center attention region 126 and the second display layer center attention region 128 are provided corresponding to the central region of the right eyeball of the observer, and the second modulation layer other regions 127 and the second display layer other regions 129 are provided corresponding to the non-central region of the right eyeball of the observer.
Specifically, the distribution of photoreceptor cells in the retina of the human eye is not uniform, and generally, in the central region of the eyeball of an observer, there are relatively many photoreceptor cells, and in the non-central region of the eyeball of the observer, the distribution of photoreceptor cells is relatively sparse. Therefore, in the retina region in the eyeball center region, the human eye has a high perceived resolution, and in the eyeball non-center region, the human eye has a relatively low perceived resolution. Based on the above principle, left eye eyeball position information of the observer may be acquired by the left eye eyeball tracking module 114, and the signal processing module 105 controls the first modulation layer center attention region 116 of the first modulation layer 112 to display the first modulation layer center pattern 13 and controls the first display layer center attention region 118 of the first display layer 113 to display the first display layer center pattern 14 according to the left eye eyeball position information of the observer, so that the left eye eyeball center region of the observer observes the left eye stereoscopic image 15 displayed based on the light field. Similarly, the signal processing module 105 may also enable the right eyeball central area of the observer to observe the right eye stereoscopic image displayed based on the light field according to the right eyeball position information of the observer provided by the right eyeball tracking module 124, which is not described again. After the left eye stereo image based on the light field display and the right eye stereo image based on the light field display are respectively received by the left eye and the right eye of an observer, the observer can observe the complete stereo image based on the light field display. While the observer observes the stereoscopic image displayed based on the light field, the signal processing module 105 may also control the modulation layer other region 117 of the first modulation layer 112 to display the first modulation layer other pattern, and control the first display layer other region 119 of the first display layer 113 to display the display layer other pattern, and the first modulation layer other pattern and the first display layer other pattern may form a left-eye near-eye stereoscopic display image. Similarly, the other patterns of the second modulation layer and the other patterns of the second display layer may form a right-eye and near-eye stereoscopic display image, and the specific process is not repeated.
Since the left eye center region of the observer aligns with the first modulation layer center gaze region 116 and the first display layer center gaze region 118, although the first modulation layer other region 117 and the first display layer other region 119 corresponding to the left eye non-center region present a near-eye display image, they do not significantly affect the light-field display-based left eye stereoscopic image observed by the left eye of the observer. Similarly, since the central region of the right eyeball of the observer is aligned with the second modulation layer central region 126 and the second display layer central region 128, although the second modulation layer other region 127 and the second display layer other region 129 corresponding to the non-central region of the right eyeball present a right-eye near-eye stereoscopic display image, they do not significantly affect the right-eye stereoscopic image based on the light-field display observed by the right eye of the observer.
Here, the near-eye stereoscopic display referred to herein should be understood as a near-eye stereoscopic display formed using near-eye glasses and 2D left and right views. It is understood that the other region 117 of the first modulation layer and the other region 119 of the first display layer may also be displayed by using any other existing or future non-light field display technology, and the other region 127 of the second modulation layer and the other region 129 of the second display layer may also be displayed by using any other existing or future non-light field display technology, so as to achieve the purpose of saving the operation amount of the signal processing module 105, which is not limited in this embodiment.
Further, the present embodiment only exemplifies the case where the first modulation layer 112 and the second modulation layer 122 are included in one layer, and it can be understood that, when the 3D display device provided in the present embodiment includes the first modulation layer 112 and the second modulation layer 122 in multiple layers, the first modulation layer center gazing region 116 of each first modulation layer 112 may form one first modulation layer center pattern, the second modulation layer center gazing region 126 of each second modulation layer 122 may form one second modulation layer center pattern, the first modulation layer center patterns and the first display layer center patterns together form a left eye stereoscopic image based on light field display, and the second modulation layer center patterns and the second display layer center patterns together form a right eye stereoscopic image based on light field display. Similarly, each layer of the first modulation layer other region 117 may form a first modulation layer other pattern, each layer of the second modulation layer other region 127 may form a second modulation layer other pattern, the plurality of layers of the first modulation layer other patterns and the first display layer other patterns together form a left-eye near-eye stereoscopic display image, and the plurality of layers of the second modulation layer other patterns and the second display layer other patterns together form a right-eye near-eye stereoscopic display image.
The present embodiment provides a near-eye stereoscopic display image at a position corresponding to the non-central eyeball area of the observer on the modulation layer and the display layer, and can reduce the data processing amount of the signal processing module 105. Meanwhile, the left eye stereo image 15 based on light field display is provided in the first modulation layer center gazing area 116 and the first display layer center gazing area 118 corresponding to the left eye eyeball center area of the observer, and the right eye stereo image based on light field display is also provided in the second modulation layer center gazing area 126 and the second display layer center gazing area 128 corresponding to the right eye eyeball center area of the observer, so that the images observed in the left eye eyeball center area and the right eye eyeball center area of the observer can be guaranteed to be the stereo images based on light field display. Compared with the case that the whole modulation layer and the display layer are displayed in a light field, the 3D display device provided by the embodiment can reduce the operation amount of the signal processing module 105; compared with the case that the whole modulation layer and the whole display layer are in near-eye three-dimensional display, the 3D display device can keep a better display effect.
Alternatively, the modulation layer may be an LCD display panel and the display layer may be an LCD display panel. Specifically, the LCD display panel comprises a liquid crystal molecular layer, and the LCD display panel can be controlled to form gratings in various shapes by adjusting the deflection direction of liquid crystal molecules in the LCD display panel so as to realize modulation of various patterns. When the first modulation layer 112, the first display layer 113, the second modulation layer 122, and the second display layer 123 are all LCD display panels, the modulation layer and the display layer can be controlled relatively easily to modulate gratings of various shapes, and light transmission modulation on the modulation layer and the display layer can be realized.
Fig. 5 is a schematic structural diagram of a first modulation layer modulation grating provided in an embodiment of the present invention, and fig. 6 is a schematic structural diagram of the first modulation layer modulation grating and a first display layer modulation grating provided in an embodiment of the present invention. Alternatively, referring to fig. 3 to fig. 6, the signal processing module 105 is configured to control the first modulation layer central gazing area 116 to form a first modulation layer modulation grating, and form the first modulation layer central pattern 13 through the first modulation layer modulation grating; the signal processing module 105 is configured to control the first display layer central gazing area 118 to form a first display layer modulation grating, and form the first display layer central pattern 14 through the first display layer modulation grating; the signal processing module 105 is configured to control the second modulation layer center gazing area 126 to form a second modulation layer modulation grating, and form a second modulation layer center pattern through the second modulation layer modulation grating; the signal processing module 105 is configured to control the second display layer central gazing area 128 to form a second display layer modulation grating, and form a second display layer central pattern through the second display layer modulation grating.
Specifically, by controlling the deflection direction of the liquid crystal molecular layer of the first modulation layer 112, the first modulation layer central gazing area 116 of the first modulation layer 112 may be formed with the light-transmitting structures 16 and the non-light-transmitting structures 17 arranged in a certain rule, and the modulation layer modulation grating includes the light-transmitting structures 16 and the non-light-transmitting structures 17. It can be understood that the first display layer modulation grating, the second display layer modulation grating and the second modulation layer modulation grating all have structures similar to those of the first modulation layer modulation grating, and are not described in detail. The light emitted from the backlight layer 101 may reach the first display layer 113 through the light-transmitting structure 16 of the first modulation layer 112, and reach the left eye of the observer through the light-transmitting structure of the first display layer 113. Illustratively, when the signal processing module 105 detects that a portion of the virtual pattern 18 to be displayed corresponding to the central area of the eyeball of the left eye of the observer is a "smiling face", light emitted from the backlight layer 101 passes through the modulation layer modulation grating of the first modulation layer 112 to form the modulation layer center pattern 13, passes through the display layer modulation grating of the first display layer to form the display layer center pattern 14, and the "smiling face" formed by the first modulation layer center pattern 13 and the first display layer center pattern 14 between the eye pupil of the observer and the display layer is the virtual pattern 18 based on the light field display, so that the left eye of the observer observes the "smiling face" based on the light field display. It is to be understood that the second modulation layer 122 and the first modulation layer 112 are both used to form a modulation layer modulation grating, and the second display layer 123 and the first display layer 113 are both used to form a display layer modulation grating, and therefore, the second modulation layer 122 and the first modulation layer 112 have the same function, and the second display layer 123 and the first display layer 113 have the same function, except that the first modulation layer 112 and the first display layer 113 are used to form a stereoscopic image suitable for the left eye of an observer, and the second modulation layer 122 and the second display layer 123 are used to form a stereoscopic image suitable for the right eye of the observer. Therefore, the second modulation layer 122 has the same structure as the first modulation layer 112, and the second display layer 123 has the same structure as the first display layer 113.
It should be noted that the modulation layer may include two independent LCD display panels, one of which is used as the first modulation layer 112, and the other of which is used as the second modulation layer 122. Alternatively, the modulation layer may include only one LCD display panel, wherein a left half of the LCD display panel may be used as the first modulation layer 112 and a right half of the LCD display panel may be used as the second modulation layer 122. Similarly, the display layer may include two independent LCD display panels, one of which is used as the first display layer 113 and the other of which is used as the second display layer 123. Alternatively, the display layer may include only one LCD display panel, wherein the left half of the LCD display panel may be used as the first display layer 113 and the right half of the LCD display panel may be used as the second display layer 123. The present embodiment does not specifically limit the structures of the modulation layer and the display layer.
Optionally, the near-eye 3D display device provided in this embodiment may further include near-eye glasses; the near-eye glasses are used for receiving image light provided by the near-eye 3D display device. Specifically, an observer can observe a stereoscopic image based on light field display provided by a near-eye 3D display device by wearing near-eye glasses. Alternatively, the near-eye glasses may further include a left eye lens and a right eye lens; the left eyeglass is used for receiving a left eye stereo image and a 2D left view pattern and filtering a right eye stereo image and a 2D right view; the right eyeglass is used for receiving the right eye stereoscopic image and the 2D right view and filtering the left eye stereoscopic image and the 2D left view pattern. By controlling the light polarization direction of the left eye stereoscopic image and the 2D left view pattern and controlling the light polarization direction of the right eye stereoscopic image and the 2D right view pattern, the light entering the left eye glasses lens can only comprise the left eye stereoscopic image and the 2D left view pattern, and the light entering the right eye glasses lens only comprises the right eye stereoscopic image and the 2D right view.
Optionally, the other patterns of the first modulation layer and the other patterns of the second modulation layer are in a light-transmitting state; the other patterns of the first display layer are 2D left view patterns, and the other patterns of the second display layer are 2D right view patterns. Specifically, by controlling the deflection direction of the liquid crystal molecule layers of the first and second modulation layers 112 and 122, both the first and second modulation layers 112 and 122 can be made to be a full-transmission structure. The first display layer 113 can be formed into a 2D left view pattern by controlling the deflection direction of the liquid crystal molecular layer of the first display layer 113, and the second display layer 123 can be formed into a 2D right view pattern by controlling the deflection direction of the liquid crystal molecular layer of the second display layer 123. It can be understood that, when the near-eye glasses include left and right glasses lenses, the polarization directions of the 2D left view pattern and the 2D right view pattern also need to be considered in the process of forming the 2D left view pattern and the 2D right view pattern.
Fig. 7 is a schematic structural diagram of a backlight layer provided in an embodiment of the present invention. Optionally, referring to fig. 3 and fig. 7, the signal processing module 105 is further electrically connected to the backlight layer 101, and configured to determine a first light-emitting luminance region 201 and a second light-emitting luminance region 202 in the backlight layer 101 according to left-eye eyeball position information and right-eye eyeball position information of an observer, where the first light-emitting luminance region includes a left-eye light-emitting luminance region and a right-eye light-emitting luminance region, the left-eye light-emitting luminance region is set corresponding to the left-eye eyeball central region, and the right-eye light-emitting luminance region is set corresponding to the right-eye eyeball central region; the luminance of the first luminance region 201 is greater than the luminance of the second luminance region 202, or the luminance of the first luminance region 201 is less than the luminance of the second luminance region 202.
Illustratively, still taking the image observed by the left eye of the observer as an example, the grating structures and light transmittances of the first modulation layer central attention area 116 and the first modulation layer other area 117 tend to be different, and the grating structures and light transmittances of the first display layer central attention area 118 and the first display layer other area 119 also tend to be different, thereby causing the image brightness of the left eye eyeball central area and the image brightness of the left eye eyeball non-central area which are finally observed by the observer to be different. In general, in the case where the backlight luminance provided by the backlight layer 101 is the same, the image luminance observed by the left eye eyeball central region of the observer is lower than the image luminance of the left eye eyeball non-central region. In this regard, by setting the backlight layer 101 to the first light emission luminance region 201 and the second light emission luminance region 202 of different luminance, the luminance of the entire 3D display screen observed by the observer can be made uniform. Illustratively, if the images displayed by the modulation layer and the display layer corresponding to the first light-emitting brightness region 201 are "smiling face", at this time, by adjusting the light-emitting brightness of the first light-emitting region 201 to be greater than that of the second light-emitting brightness region 202, the brightness of the stereoscopic image "smiling face" displayed based on the light field can be made closer to that of the other images displayed based on the near-eye stereoscopic display 3D region, so that the overall pictures of the stereoscopic display region and the non-stereoscopic display region are more smooth and natural. However, if the 3D display device displays the whole solar eclipse, the second light-emitting luminance region 202 corresponds to the sky background, which has a high luminance, and the first light-emitting luminance region 201 corresponds to the whole solar eclipse, which has a low luminance, in order to make the whole solar eclipse corresponding to the first light-emitting luminance region 201 more clear, the backlight luminance of the first light-emitting luminance region 201 needs to be further reduced to improve the luminance contrast between the first light-emitting luminance region 201 and the second light-emitting luminance region 202.
Optionally, to achieve a dynamic backlight effect, the backlight layer 101 may include at least one of an LED array, a mini LED array, a Micro LED array, an LCD backlight unit and a projection device, wherein the LCD backlight unit includes a backlight module and an LCD display panel. In particular, LED arrays have the advantages of high luminous efficiency, low power consumption, long service life, low operating temperature, and the like, and can be used for backlight applications. The mini LED array and the Micro LED array are smaller than a common LED array in size, and compared with the common LED array, more LED light-emitting units can be arranged in a unit area of the mini LED array or the Micro LED array, so that when the mini LED array or the Micro LED array is selected as the backlight layer 101, the light-emitting effect can be more fine. The backlight module in the LCD backlight unit can be a backlight element which can only provide single brightness, but the light intensity after passing through the display panel can be controlled by adjusting the structure of the LCD display panel, thereby achieving the effect of dynamic backlight; because the backlight elements with adjustable luminous intensity of each part are not needed, the production cost can be saved, and the economic benefit is improved. The projection device may be a white light emitting device, and the light emitting intensity of the first light emitting luminance region 201 may be larger or smaller than the light emitting intensity of the second light emitting luminance region 202 by adjusting the local light emitting intensity thereof.
Based on the same inventive concept, the present embodiment further provides an electronic device, which may include the 3D display apparatus according to any of the above embodiments. Alternatively, the electronic device may be a television, a computer, or the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (7)
1. A3D display device is characterized by comprising a backlight layer, at least one modulation layer, a display layer, an eyeball tracking module and a signal processing module, wherein the backlight layer, the at least one modulation layer and the display layer are sequentially arranged in parallel, and the display layer is positioned on one side close to an observer;
the backlight layer is used for providing backlight illumination;
the modulation layer comprises a first modulation layer and a second modulation layer;
the display layer comprises a first display layer and a second display layer; the first display layer is positioned on one side of the first modulation layer close to an observer, and the second display layer is positioned on one side of the second modulation layer close to the observer;
the eyeball tracking module comprises a left-eye eyeball tracking module and a right-eye eyeball tracking module; the left eye eyeball tracking module is used for acquiring left eye eyeball position information of the observer, and the right eye eyeball tracking module is used for acquiring right eye eyeball position information of the observer;
the signal processing module is respectively electrically connected with the left eye eyeball tracking module, the right eye eyeball tracking module, the first modulation layer, the second modulation layer, the first display layer and the second display layer, and is configured to receive the left eye eyeball position information and the right eye eyeball position information, determine a first modulation layer central gazing region in the first modulation layer and a first display layer central gazing region in the first display layer according to the left eye eyeball position information, control the first modulation layer central gazing region to display a first modulation layer central pattern, and control the first display layer central gazing region to display a first display layer central pattern, where the first modulation layer central pattern and the first display layer central pattern form a left eye stereoscopic image based on light field display; determining a second modulation layer center gazing area in the second modulation layer and a second display layer center gazing area in the second display layer according to the right eye eyeball position information, controlling the second modulation layer center gazing area to display a second modulation layer center pattern, and controlling the second display layer center gazing area to display a second display layer center pattern, wherein the second modulation layer center pattern and the second display layer center pattern form a right eye stereoscopic image based on light field display;
the signal processing module is further configured to control other areas of the first modulation layer, other than the center gazing area of the first modulation layer, in the first modulation layer to display other patterns of the first modulation layer, and control other areas of the first display layer, other than the center gazing area of the first display layer, in the first display layer to display other patterns of the first display layer, where the other patterns of the first modulation layer and the other patterns of the first display layer form a 2D left view pattern; controlling other areas of the second modulation layer other than the second modulation layer center gazing area in the second modulation layer to display other patterns of the second modulation layer, and controlling other areas of the second display layer other than the second display layer center gazing area in the second display layer to display other patterns of the second display layer, wherein the other patterns of the second modulation layer and the other patterns of the second display layer form a 2D right view pattern;
the first modulation layer central watching region and the first display layer central watching region are arranged corresponding to a left eye eyeball central region of the observer, and the other first modulation layer regions and the other first display layer regions are arranged corresponding to a left eye eyeball non-central region of the observer; the second modulation layer central gazing area and the second display layer central gazing area are arranged corresponding to a right eyeball central area of the observer, and the other areas of the second modulation layer and the second display layer are arranged corresponding to a right eyeball non-central area of the observer;
the signal processing module is also electrically connected with the backlight layer and is used for determining a first light-emitting brightness area and a second light-emitting brightness area in the backlight layer according to the position information of the left eye eyeball and the position information of the right eye eyeball of the observer; the first light-emitting brightness area comprises a left-eye light-emitting brightness area and a right-eye light-emitting brightness area, the left-eye light-emitting brightness area is arranged corresponding to the left-eye eyeball central area, the right-eye light-emitting brightness area is arranged corresponding to the right-eye eyeball central area, and the second light-emitting brightness area is arranged corresponding to the left-eye eyeball non-central area and the right-eye eyeball non-central area;
and adjusting the brightness of the first brightness region to be greater than that of the second brightness region according to the image displayed by the 3D display device, or adjusting the brightness of the first brightness region to be less than that of the second brightness region, so that the displayed image is smooth and clear.
2. The 3D display device according to claim 1, wherein the signal processing module is configured to control the first modulation layer center gazing area to form a first modulation layer modulation grating, and a first modulation layer center pattern is formed by the first modulation layer modulation grating;
the signal processing module is used for controlling the central watching area of the first display layer to form a first display layer modulation grating, and forming a first display layer central pattern through the first display layer modulation grating;
the signal processing module is used for controlling the second modulation layer center watching area to form a second modulation layer modulation grating, and a second modulation layer center pattern is formed through the second modulation layer modulation grating;
the signal processing module is used for controlling the central watching area of the second display layer to form a second display layer modulation grating, and a second display layer central pattern is formed through the second display layer modulation grating.
3. The 3D display device according to claim 1, wherein the first modulation layer other pattern and the second modulation layer other pattern are in a transmissive state; the other patterns of the first display layer are 2D left view patterns, and the other patterns of the second display layer are 2D right view patterns.
4. The 3D display device according to claim 1, further comprising near-eye glasses; the near-eye glasses are used for receiving image light provided by the 3D display device.
5. The 3D display device of claim 1, wherein the backlight layer comprises at least one of an LED array, a mini LED array, a Micro LED array, an LCD backlight unit, and a projection device, wherein the LCD backlight unit comprises a backlight module and an LCD display panel.
6. A 3D display device according to claim 1, wherein the modulation layer is an LCD display panel and the display layer is an LCD display panel.
7. An electronic device characterized by comprising the 3D display apparatus of any one of claims 1-6.
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| CN111123549B (en) * | 2020-01-20 | 2021-10-19 | 广东省半导体产业技术研究院 | Naked eye 3D display module and device |
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