TWI765182B - Three-dimensional stereoscopic image display device - Google Patents

Abstract

A three-dimensional stereoscopic image display apparatus includes a display module, a backlight module, and an image algorithm unit. The display module has a display surface. The display module can open needed multiple pixels and close unneeded multiple pixels by using software. The backlight module is disposed on a side of the display module away from the display surface. The backlight module has multiple light sources. Unreconstructed images displayed by the display surface can reassemble integrated images and form stereoscopic images with the light sources and the needed pixels. Thus, there is no need to provide a lens array, and the cost is reduced.

Description

3D stereoscopic image display device

The present invention relates to a 3D stereoscopic image display device, in particular to a 3D stereoscopic image display device without a lens array.

Existing stereoscopic image display devices are generally made by the technology of binocular fusion of images. Generally, the naked-view stereoscopic image display device allows the viewer to watch from an angle facing the display device, or the depth of the image cannot be too far from the display surface. However, when considering some situational situations, such as aviation terrain models, architectural models, medical 3D training, etc., when the display device is placed horizontally, the natural viewing angle of the viewer is to view the display device obliquely. At this time, the general mainstream stereoscopic image display technology cannot provide the viewer with a natural viewing angle, which causes inconvenience. Furthermore, for a general stereoscopic image display device, the 3D perception viewed from the front is a visual stimulus in only one direction for the viewer, just like the image protruding or sinking in, and it cannot achieve the feeling that the image is out of plane. Realize the feeling of floating in the air.

Taiwan Patent Publication No. I614533 discloses a stereoscopic display device, comprising a flat display device, a lens array layer and a microstructure layer, the flat display device has a display surface, and the lens array layer is disposed on the display surface of the flat display device, The lens array layer includes a base and several lenses with focusing functions. The lens array layer is used to control the light field. The microstructure layer is arranged on the lens array layer. The microstructure layer includes a substrate and several microstructures. The microstructure layer Used to modulate the angular direction of the light. Thereby, it is used to display a three-dimensional image floating in the air, and can be viewed from an oblique viewing angle. However, most of the existing stereoscopic display devices need to be provided with a lens array, so that the cost cannot be further reduced. In addition, the lens itself will have aberrations, resulting in a decrease in image quality, and the manufacturing process will also be limited. In addition, because the lens array is very difficult to manufacture into a large piece, it is inconvenient for large-scale applications, and generally, an integrated image using a lens array will have other wrong images at large viewing angles, and it is difficult to improve the image quality.

The technical problem to be solved by the present invention is to provide a 3D stereoscopic image display device in view of the deficiencies of the prior art, which does not require a lens array, so that the cost and process difficulty can be reduced, and the image quality can be improved.

In order to solve the above-mentioned technical problems, the present invention provides a 3D stereoscopic image display device, comprising: a display module, the display module has a display surface, the display module can turn on a plurality of pixels to be used and turn off a plurality of pixels. A pixel that does not need to be used, and the spacing of the pixels that need to be used; a backlight module, the backlight module is arranged on the side of the display module away from the display surface, the backlight module includes a plurality of light sources, the backlight module the arrangement of the light sources at intervals; and an image calculation unit, the image calculation unit is electrically connected to the display module and the backlight module; wherein the image displayed on the display surface that has not been reconstructed can pass through the light sources and the The pixels that need to be used are recombined into an integrated image to form a stereoscopic image.

The beneficial effect of the present invention is that the 3D stereoscopic image display device of the present invention includes a display module, a backlight module and an image computing unit, and the display module can turn on a plurality of pixels that need to be used and turn off a plurality of pixels that do not need to be used. , the backlight module includes a plurality of light sources, and the unreconstructed image displayed by the display module can be recombined into an integrated image through the light sources and the pixels to be used to form a three-dimensional image. The present invention does not need to arrange a lens array, so that the cost and the difficulty of the manufacturing process can be reduced, and the image quality can be improved.

The present invention does not need a lens array, so it is convenient for large-scale applications, and due to the design of the angle of the light source below, there will be no other wrong images, or other wrong images can be reduced to improve image quality.

For a further understanding of the features and technical content of the present invention, please refer to the following detailed descriptions and drawings of the present invention. However, the drawings provided are only for reference and description, and are not intended to limit the present invention.

The following are specific specific examples to illustrate the embodiments disclosed in the present invention, and those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to the actual size, and are stated in advance. The following embodiments will further describe the related technical contents of the present invention in detail, but the disclosed contents are not intended to limit the protection scope of the present invention.

[First Embodiment]

The present invention provides a 3D stereoscopic image display device, which can be applied to various industries such as optoelectronics, medical treatment, military, display, display, education and entertainment, and consumer electronics. The 3D stereoscopic image display device can be applied to active or passive displays. , without limitation.

Please refer to FIG. 1 , the 3D stereoscopic image display device of the present invention includes a display module 1 , a backlight module 2 and an image calculation unit 3 , the display module 1 has a display surface 11 , in this embodiment, the The display module 1 is a liquid crystal panel with a color filter. The display module 1 has a plurality of pixels, and can use software to turn on a plurality of pixels 12 that need to be used and turn off a plurality of pixels that do not need to be used. Pixel 13 used, these need to use the pixel 12 spacing setting. The display module 1 has the function of regulating the light field. The display module 1 can regulate the light angle of the three-dimensional object, so that the flat images that have not been reconstructed can be redistributed and combined, so that the viewer can see the three-dimensional three-dimensional images. The diameter and height of the pixels 12 to be used, and the distance from the backlight module 2 can be appropriately changed to determine the three-dimensional image content such as the height, viewing angle range, and resolution of the three-dimensional image. The pixels 12 to be used are related to the display effect, and the arrangement can be a rectangular arrangement or a hexagonal arrangement, that is, the pixels 12 to be used in every two adjacent columns can be arranged in a relative arrangement or a staggered arrangement , can be used to display 3D image information.

The backlight module 2 is arranged on one side of the display module 1. In this embodiment, the backlight module 2 is arranged at intervals on the side of the display module 1 away from the display surface 11. The backlight module 2 can project The light source transmits information to the user's eyes after the light passes through the display module 1 . The backlight module 2 includes a plurality of light sources 21 . The light sources 21 may be LED or OLED light sources, and the light sources 21 may be point light sources or surface light sources. In this embodiment, the light sources 21 are white light sources, the light sources 21 are arranged at intervals, the light sources 21 can provide a function like a pinhole array layer, and the light sources 21 can be respectively associated with the pixels 12 to be used. Corresponding. The image computing unit 3 is electrically connected to the display module 1 and the backlight module 2 . The plane image can pass through the light sources 21 and the display module 1 to display the reconstructed three-dimensional image.

The present invention can be used for oblique viewing of three-dimensional images. The so-called oblique viewing mode means that the viewer is not facing the display module 1 directly, but can also see the three-dimensional images. In the traditional naked-eye three-dimensional display, most of them have the problem of viewing angle, so that the viewer cannot see it at an oblique angle. In the present invention, oblique viewing is a major feature. The viewer is in the direction facing the display module 1 (zero order viewing zone), and there is a viewing angle limit on the left and right sides. What the viewer sees will not be the stereoscopic information that should be seen at the corresponding angle. In order to achieve oblique viewing of stereoscopic images, the 0-order (forward) display method is no longer used, but the oblique angle display method is used to focus the light path in the oblique direction, so that the viewer can watch the oblique direction. to view the stereoscopic image in the direction of . However, the 3D stereoscopic image display device of the present invention can also be applied to viewing stereoscopic images from a positive angle.

The display module 1 of the present invention can be of any specification, as long as the algorithm can be applied, that is, the display module 1 is electrically connected with the image calculation unit 3, and the image used in the display module 1 needs to pass through the Like the calculation of the algorithm, this calculation is combined with the structure of the backlight module 2 to predict the various paths that the light travels, and calculate the relative position of the image. Since the image algorithm is the prior art and is not the focus of the present invention, it will not be repeated here.

Therefore, the present invention proposes a 3D stereoscopic image display device which can be applied to forward and oblique viewing angles, and can control the light traveling direction of each position pixel in the device in cooperation with the hardware setting. The hardware system of the present invention is a simple optical element, including a display module 1, a backlight module 2 and an image calculation unit 3, which can be packaged into a kit, and the integrated image The principle, combined with the screen output picture signal through a special algorithm, can make it present a real image in a three-dimensional space. In terms of hardware characteristics, the present invention does not need other optical films, and only needs a display module 1, a backlight module 2 and an image computing unit 3, which are extremely simple devices, and can achieve the effect of floating images for displaying floating images. Stereoscopic image in the air.

[Second Embodiment]

Referring to FIG. 2, the 3D stereoscopic image display device of this embodiment includes a display module 1a, a backlight module 2a, and an image computing unit 3a. The structure of this embodiment is substantially the same as that of the first embodiment. The group 1a has a display surface 11a, and the display module 1a can turn on the pixels 12a that need to be used and turn off the pixels 13a that are not needed. The backlight module 2a includes a plurality of light sources 21a. The main difference between this embodiment and the first embodiment is that the light sources 21a include red light sources, green light sources and blue light sources, which can be displayed simultaneously to increase the color gamut. The light sources 21a can project light, and after the light passes through the display module 1a, information is transmitted to the user's eyes. The two-dimensional image can pass through the light sources 21a and the display module 1a to display the reconstructed three-dimensional image.

[Third Embodiment]

Please refer to FIG. 3 , the 3D stereoscopic image display device of this embodiment includes a display module 1b, a backlight module 2b and an image calculation unit 3b. The structure of this embodiment is substantially the same as that of the first embodiment. The group 1b has a display surface 11b. The main difference between this embodiment and the first embodiment is that in this embodiment, the display module 1b can control the transmittance of different pixels. Wet device (EW device), liquid crystal layer device or other technologies are combined with Field Sequential (FS) technology. The display module 1b can turn on the pixels 12b that need to be used and turn off the pixels 13b that are not needed, and the pixels 12b that need to be used can control different transmittances. The backlight module 2b includes a plurality of light sources 21b, and the light sources 21b at least include a red light source, a green light source and a blue light source, and can display time sequence. The light sources 21b can project light, and after the light passes through the display module 1b, information can be transmitted to the user's eyes. The display surface can display at least three primary color images of R, G, and B in a time-sequential manner, and then superimpose a full-color image. The unreconstructed images of at least three primary colors of R, G, and B displayed on the display surface can be recombined into an integrated image through the device for controlling the transmittance of different pixels.

[Fourth Embodiment]

Referring to FIG. 4 , the structure of this embodiment is substantially the same as that of the first embodiment. In this embodiment, the light sources 21 are white light sources. The main difference of this embodiment is that a light guide is arranged on one side of the light sources 21 The device 22 is used to provide the light guide effect of the light sources 21, so that the light projected by the light sources 21 can be more accurately guided to the display module 1, so that after the light passes through the display module 1, the information is transmitted to the user. in the eyes of the person. The plane image can pass through the light sources 21 and the display module 1 to display the reconstructed three-dimensional image.

[Fifth Embodiment]

Referring to FIG. 5, the structure of this embodiment is substantially the same as that of the second embodiment. In this embodiment, the light sources 21a at least include red light sources, green light sources and blue light sources, which can be displayed simultaneously. The main difference in this embodiment is The light guide device 22a is provided on one side of the light sources 21a to provide the light guide effect of the light sources 21a, and the light projected by the light sources 21a can be more accurately guided to the display module 1a, so that the light can pass through After the module 1a is displayed, the information is transmitted to the user's eyes. The two-dimensional image can pass through the light sources 21a and the display module 1a to display the reconstructed three-dimensional image.

[Sixth Embodiment]

Referring to FIG. 6 , the structure of this embodiment is substantially the same as that of the third embodiment. In this embodiment, the display module 1b can control the transmittance of different pixels, and the display module 1b is, for example, an electrowetting device ( EW device), liquid crystal layer device or other technologies are combined with Field Sequential (FS) technology. The display module 1b can turn on the pixels 12b that need to be used and turn off the pixels 13b that are not needed, and the pixels 12b that need to be used can control different transmittances. The backlight module 2b includes a plurality of light sources 21b, and the light sources 21b at least include a red light source, a green light source and a blue light source, and can display time sequence. The main difference of this embodiment is that a light guide device 22b is provided on one side of the light sources 21b to provide the light guide effect of the light sources 21b, and the light projected by the light sources 21b can be more accurately guided to the display module 1b, after the light passes through the display module 1b, the information is transmitted to the user's eyes. The two-dimensional image can pass through the light sources 21b and the display module 1b to display the reconstructed three-dimensional image.

[Seventh Embodiment]

Referring to FIG. 7 , in this embodiment, it is further disclosed that the center-to-center distance P between two adjacent light sources 21 is less than 15 mm, and the distance G between the light sources 21 and the display module 1 is less than 45 mm. Preferably, the area A of the overlapping portion of the display module 1 projected by the light of each adjacent two light sources 21 is less than 50% of the area B of the display module 1 projected by the light of a single light source 21 . Better stereoscopic image display effect. In another embodiment, the center-to-center distance P between two adjacent light sources 21 is less than 10 mm, and the distance G between the light sources 21 and the display module 1 is less than 30 mm. In another embodiment, the center-to-center distance P between the two adjacent light sources 21 is less than 5 mm, and the distance G between the light sources 21 and the display module 1 is less than 15 mm.

In another embodiment, the distance between the centers of every two adjacent light sources is less than 15 mm, and the distance between the light sources and the display surface is less than 45 mm. In another embodiment, the distance between the centers of every two adjacent light sources is less than 10 mm, and the distance between the light sources and the display surface is less than 30 mm. In another embodiment, the distance between the centers of every two adjacent light sources is less than 5 mm, and the distance between the light sources and the display surface is less than 15 mm. The area of the overlapping portion of the display surface projected by the light of each adjacent two light sources to the display surface is less than 50% of the area of the display surface projected by the light of a single light source.

[Advantageous effects of the embodiment]

The beneficial effect of the present invention is that the 3D stereoscopic image display device of the present invention includes a display module, a backlight module and an image computing unit, and the display module can turn on a plurality of pixels that need to be used and turn off a plurality of pixels that do not need to be used. The backlight module includes a plurality of light sources, and the unreconstructed image displayed by the display module can be recombined into an integrated image through the light sources and the pixels to be used to form a three-dimensional image. The present invention does not need to arrange a lens array, so that the cost and the difficulty of the manufacturing process can be reduced, and the image quality can be improved.

The present invention does not need a lens array, so it is convenient for large-scale applications, and due to the design of the angle of the light source below, there will be no other wrong images, or other wrong images can be reduced to improve image quality.

The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, any equivalent technical changes made by using the contents of the description and drawings of the present invention are included in the application of the present invention. within the scope of the patent.

1: Display module 11: Display surface 12: Pixels to be used 13: Pixels that do not need to be used 1a: Display module 11a: Display surface 12a: Pixels to be used 13a: Pixels that do not need to be used 1b: Display module 11b: Display surface 12b: Pixels to be used 13b: Pixels that do not need to be used 2: Backlight module 21: Light source 22: Light guide device 2a: Backlight module 21a: Light source 22a: Light guide device 2b: Backlight module 21b: Light source 22b: Light guide device 3: Image Calculation Unit 3a Image Calculation Unit 3b Image Calculation Unit P: the center distance of each adjacent two light sources G: The distance between the light source and the display module A: The area of the overlapping portion of the display module where the light of each adjacent two light sources is projected onto the display module B: The area where the light from a single light source is projected to the display module

FIG. 1 is a schematic plan view of a first embodiment of a 3D stereoscopic image display device according to the present invention.

FIG. 2 is a schematic plan view of a second embodiment of a 3D stereoscopic image display device according to the present invention.

FIG. 3 is a schematic plan view of a third embodiment of a 3D stereoscopic image display device according to the present invention.

4 is a schematic plan view of a fourth embodiment of a 3D stereoscopic image display device according to the present invention.

FIG. 5 is a schematic plan view of a fifth embodiment of a 3D stereoscopic image display device according to the present invention.

6 is a schematic plan view of a sixth embodiment of a 3D stereoscopic image display device according to the present invention.

FIG. 7 is a schematic plan view of a seventh embodiment of a 3D stereoscopic image display device according to the present invention.

1: Display module

11: Display surface

12: Pixels to be used

13: Pixels that do not need to be used

2: Backlight module

21: Light source

3: Image Calculation Unit

Claims (9)

A 3D stereoscopic image display device is used to display a three-dimensional image floating in the air and can be viewed from an oblique viewing angle, comprising: a display module, the display module has a display surface, the display module can open a plurality of Pixels that need to be used and a plurality of pixels that do not need to be turned off, the setting of the pixel intervals that need to be used; a backlight module, the backlight module is arranged on the side of the display module away from the display surface, the backlight The module includes a plurality of light sources, the light sources are arranged at intervals; and an image calculation unit, the image calculation unit is electrically connected to the display module and the backlight module; wherein the image displayed on the display surface has not been reconstructed. The image can be recombined into an integrated image through the light sources and the pixels that need to be used to form a three-dimensional image; the area of each adjacent two light sources projected to the overlapping portion of the display module is smaller than that of a single light source. Light is projected to 50% of the area of the display module. The 3D stereoscopic image display device of claim 1, wherein the display module is a liquid crystal panel with color filters. The 3D stereoscopic image display device according to claim 1, wherein the backlight module is disposed on a side of the display module away from the display surface at intervals. The 3D stereoscopic image display device according to claim 1, wherein the light sources are white light sources. The 3D stereoscopic image display device according to claim 1, wherein the light sources at least include a red light source, a green light source and a blue light source, which can be displayed simultaneously. The 3D stereoscopic image display device according to claim 1, wherein the light sources at least include a red light source, a green light source and a blue light source, which can display time-series. The 3D stereoscopic image display device of claim 6, wherein the pixels to be used can control different transmittances. The 3D stereoscopic image display device according to claim 1, wherein these A light guide device is arranged on one side of the light source to provide the light guide effect of the light sources. The 3D stereoscopic image display device according to claim 1, wherein the center distance between each adjacent two light sources is less than 15mm, and the distance between the light source and the display module is less than 45mm.

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