Display device and display method thereof

Abstract

The present invention provides a display device, comprising a plurality of display panels which are sequentially stacked and respectively display a first color, a second color, a third color, a fourth color, a fifth color, and a sixth color. Two display panels display the same color. When the display device is switched to a two-dimensional display mode, the two display panels display the same image. When the display device is switched to a three-dimensional display mode, the two display panels respectively display two images, and the two images are different from each other.

Description

Display device and display method Technical Field

[0001] This invention relates to a display device and a display method thereof, and more particularly to a display device and a display method thereof capable of switching between two-dimensional (2D) and three-dimensional (3D) display modes. Background Technology

[0002] The perception of depth is generally based on the principle of binocular vision differences. When each eye sees slightly different images, the brain uses these differences to perceive the distance and position of objects. Since the left and right eyes see images from different perspectives, the brain attempts to merge these images, thus creating a sense of depth.

[0003] Conventional 3D displays divide the pixels of a liquid crystal panel into several pairs of odd and even pixels. The odd-pixel pairs provide an image for one eye of the viewer, while the even-pixel pairs provide an image for the other eye. A lenticular lens is used to split the light, thereby projecting the images of the odd and even pixels onto the viewer's two eyes respectively.

[0004] Since the light source of electronic paper comes from ambient light, if a cylindrical lens is used to split the light, the incident and reflected ambient light will be refracted by the lens. This can easily produce moiré patterns due to the superposition of the pitch between the lens and the pixels, or 3D crosstalk due to one eye seeing the image of the other. Furthermore, the stereoscopic effect is not easy to meet most viewing angle conditions. Therefore, the industry has not yet commercialized electronic paper with 3D display function.

[0005] In view of this, there is currently a lack of display devices and display methods on the market that have 3D display capabilities and can switch between two-dimensional and three-dimensional display modes, so relevant industry players are seeking solutions. Summary of the Invention

[0006] Therefore, the purpose of this invention is to provide a display device and display method thereof, which can present a three-dimensional visual experience without the need for an external lens by superimposing multiple layers of Cholesteric Liquid Crystal Display (ChLCD) monochrome film, and can effectively control whether the ChLCD operates in two-dimensional display mode or three-dimensional display mode, so as to solve the problem that conventional technology requires an external lens and is prone to ripples or display interference.

[0007] According to one embodiment of the present invention, a display device is provided, comprising a plurality of display panels, including a first display panel, a second display panel, a third display panel, a fourth display panel, a fifth display panel, and a sixth display panel. The first display panel displays a first color; the second display panel displays a second color; the third display panel displays a third color; the fourth display panel displays a fourth color; the fifth display panel displays a fifth color; and the sixth display panel displays a sixth color. The first, second, third, fourth, fifth, and sixth display panels are stacked sequentially. The first, second, third, fourth, fifth, and sixth colors sequentially form a color combination, wherein the color combination does not include the first, second, third, fourth, fifth, and sixth colors being blue, blue, green, green, red, and red, respectively.

[0008] Other embodiments of the aforementioned implementation are as follows: the two of the aforementioned display panels display the same color, and the two of these display panels respectively display a foreground image and a background image, so that the display device operates in a three-dimensional display mode.

[0009] Other embodiments of the aforementioned implementation are as follows: the two aforementioned display panels are respectively a L-cholesterol liquid crystal display panel and a D-cholesterol liquid crystal display panel.

[0010] Other embodiments of the aforementioned implementation are as follows: The aforementioned color combination includes a first color, a second color, a third color, a fourth color, a fifth color, and a sixth color, which are blue, green, red, blue, green, and red, respectively. These display panels are spaced apart by a distance of less than or equal to 5 centimeters.

[0011] According to another embodiment of the structural configuration of the present invention, a display device is provided, comprising a plurality of display panels stacked sequentially, including a first display panel, a second display panel, a third display panel, a fourth display panel, a fifth display panel, and a sixth display panel. The first display panel displays a first color; the second display panel displays a second color; the third display panel displays a third color; the fourth display panel displays a fourth color; the fifth display panel displays a fifth color; and the sixth display panel displays a sixth color. Any one of the first, second, third, fourth, fifth, and sixth colors is one of blue, green, and red. When two of the display panels display the same color, the display device switches to a two-dimensional display mode or a three-dimensional display mode. When the display device switches to a two-dimensional display mode, the two of the display panels display the same image. When the display device switches to a three-dimensional display mode, the two of the display panels each display two different images.

[0012] Other embodiments of the aforementioned implementation are as follows: The aforementioned display device further includes circularly polarized glasses. The circularly polarized glasses face the first display panel and receive a left-handedly polarized light and a right-handedly polarized light from the display panel, and include a quarter-wave plate and a linear polarizer. The linear polarizer is superimposed on the quarter-wave plate. These two images are a left-view image and a right-view image, respectively.

[0013] Other embodiments of the aforementioned implementation are as follows: the two images mentioned above are a foreground image and a background image, respectively, so that the display device operates in a three-dimensional display mode.

[0014] Other embodiments of the aforementioned implementation are as follows: the two aforementioned display panels are respectively a L-cholesterol liquid crystal display panel and a D-cholesterol liquid crystal display panel.

[0015] Other embodiments of the aforementioned implementation are as follows: the first color, second color, third color, fourth color, fifth color and sixth color are blue, blue, green, green, red and red, respectively.

[0016] Other embodiments of the aforementioned implementation are as follows: the first color, second color, third color, fourth color, fifth color, and sixth color are blue, green, red, blue, green, and red, respectively. These display panels are spaced apart by a distance of 5 centimeters or less from each other.

[0017] According to one embodiment of the present invention, a display method for a display device is provided, comprising providing a display device; and controlling the display device via a controller to switch the display device to a two-dimensional display mode or a three-dimensional display mode. The display device includes a plurality of display panels stacked sequentially, and includes a first display panel, a second display panel, a third display panel, a fourth display panel, a fifth display panel, and a sixth display panel. The first display panel displays a first color; the second display panel displays a second color; the third display panel displays a third color; the fourth display panel displays a fourth color; the fifth display panel displays a fifth color; and the sixth display panel displays a sixth color. Any one of the first, second, third, fourth, fifth, and sixth colors is one of blue, green, and red, and two of the display panels display the same color. When the display device is switched to a two-dimensional display mode, the controller controls the two display panels to display the same image. When the display device is switched to a three-dimensional display mode, the controller controls the two display panels to display two images, which are different from each other.

[0018] Other embodiments of the aforementioned implementation are as follows: The display method of the aforementioned display device further includes providing circularly polarized glasses facing a first display panel, such that the circularly polarized glasses receive a left-handedly polarized light and a right-handedly polarized light from the display panel. The circularly polarized glasses include a quarter-wave plate and a linear polarizer. The linear polarizer is superimposed on the quarter-wave plate. These two images are a left-view image and a right-view image, respectively.

[0019] Other embodiments of the aforementioned implementation are as follows: the two images mentioned above are a foreground image and a background image, respectively, so that the display device operates in a three-dimensional display mode.

[0020] Other embodiments of the aforementioned implementation are as follows: the two aforementioned display panels are respectively a L-cholesterol liquid crystal display panel and a D-cholesterol liquid crystal display panel.

[0021] Other embodiments of the aforementioned implementation are as follows: the first color, second color, third color, fourth color, fifth color and sixth color are blue, blue, green, green, red and red, respectively.

[0022] Other embodiments of the aforementioned implementation are as follows: the first color, second color, third color, fourth color, fifth color, and sixth color are blue, green, red, blue, green, and red, respectively. These display panels are spaced apart by a distance of 5 centimeters or less from each other.

[0023] According to another embodiment of the structural configuration of the present invention, a display device is provided, comprising a plurality of display panels. These display panels are stacked sequentially and include a first display panel and a second display panel. The first display panel displays a first color. The second display panel displays a second color, which is the same as the first color. The display device can switch between a two-dimensional display mode and a three-dimensional display mode. When the display device switches to a two-dimensional display mode, the first display panel and the second display panel display the same image. When the display device switches to a three-dimensional display mode, the first display panel and the second display panel each display two different images.

[0024] Other embodiments of the aforementioned implementation are as follows: The aforementioned display panels further include a third display panel and a fourth display panel. The third display panel displays a third color. The fourth display panel displays a fourth color, which is the same as the third color and different from the first color. When the display device switches to a two-dimensional display mode, the third and fourth display panels display another identical image. When the display device switches to a three-dimensional display mode, the third and fourth display panels respectively display two other images, and these two other images are different from each other.

[0025] Other embodiments of the aforementioned implementation are as follows: The aforementioned display device further includes circularly polarized glasses. The circularly polarized glasses face the first display panel and receive a left-handedly polarized light and a right-handedly polarized light from the display panel, and include a quarter-wave plate and a linear polarizer. The linear polarizer is superimposed on the quarter-wave plate. These two images are a left-view image and a right-view image, respectively.

[0026] Other embodiments of the aforementioned implementation are as follows: the two images mentioned above are a foreground image and a background image, respectively, so that the display device operates in a three-dimensional display mode. Attached Figure Description

[0027] Figure 1 is a schematic diagram illustrating a display device according to a first embodiment of the present invention;

[0028] Figure 2 is a schematic diagram illustrating a display device according to a second embodiment of the present invention;

[0029] Figure 3 is a schematic diagram illustrating a display device and controller according to a third embodiment of the present invention;

[0030] Figure 4 is a schematic diagram illustrating the display device and controller according to a fourth embodiment of the present invention;

[0031] Figure 5 is a flowchart illustrating a display method of a display device according to a fifth embodiment of the present invention;

[0032] Figure 6 is a schematic diagram illustrating a display device according to a sixth embodiment of the present invention;

[0033] Figure 7 is a schematic diagram illustrating a display device according to a seventh embodiment of the present invention;

[0034] Figure 8 is a schematic diagram illustrating a display device according to an eighth embodiment of the present invention; and

[0035] Figure 9 is a schematic diagram illustrating a display device according to a ninth embodiment of the present invention.

[0036] The reference numerals in the accompanying drawings are explained as follows: 100, 100a, 100b, 100c, 100d, 100e, 100f, 100g: display devices; 110, 110b, 110c, 110d, 110e, 110f, 110g: first display panel; 112, 112b: first liquid crystal layer; 120, 120b, 120c, 120d, 120e, 120f, 120g: second display panel; 122, 122b: second liquid crystal layer; 130, 130b, 130c, 130f, 130g: third display panel; 132, 132b: third liquid crystal layer. Crystal layers 140, 140b, 140c, 140f, 140g: Fourth display panel; 142, 142b: Fourth liquid crystal layer; 150, 150b, 150c: Fifth display panel; 152, 152b: Fifth liquid crystal layer; 160, 160b, 160c: Sixth display panel; 162, 162b: Sixth liquid crystal layer; 170: Light absorption layer; 180: Adhesive layer; 200: Circular polarizing glasses; 210: Quarter-wave plate; 220: Linear polarizer; 300: Controller; D: Pitch GL: Glass layer; S0: Display method; S02, S04: Steps Detailed Implementation

[0037] Several embodiments of the present invention will now be described with reference to the accompanying drawings. For clarity, many practical details will be set forth in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. Furthermore, for the sake of simplicity in the drawings, some conventional structures and elements will be illustrated in a simple schematic manner; and repeated elements may be denoted by the same reference numerals.

[0038] Furthermore, in this document, when a component (or unit, module, etc.) is "connected" to another component, it can mean that the component is directly connected to the other component, or that the component is indirectly connected to the other component, meaning that there is another component between the component and the other component. Only when it is explicitly stated that a component is "directly connected" to another component does it indicate that there is no other component between the component and the other component. The terms "first," "second," and "third" are only used to describe different components and do not limit the components themselves; therefore, "first component" can also be referred to as "second component." Moreover, the combinations of components / units / circuits in this document are not combinations generally known, conventional, or customary in this field. Whether the components / units / circuits themselves are customary cannot be used to determine whether their combination relationships are easily performed by someone of ordinary skill in the art.

[0039] Cholesterol liquid crystal electronic paper shares similarities with electronic ink (e-ink), such as low power consumption and non-illuminating fonts, making prolonged reading more comfortable for the eyes. However, unlike conventional electronic ink, cholesterol liquid crystal offers richer color reproduction, giving it a significant advantage in displaying color content and making it an ideal screen choice for e-readers and other electronic devices. This invention utilizes ambient light and, by stacking multiple layers of ChLCD monochrome film, can present a three-dimensional visual experience without the need for external lenses. The embodiments can be divided into two main architectures: a glasses-type architecture and a naked-eye architecture. The glasses-type architecture can display a left-view image and a right-view image respectively, which, after passing through circularly polarized glasses, enter the left and right eyes respectively to produce stereoscopic vision. The naked-eye architecture can display a foreground image and a background image respectively, so that the viewer's eyes naturally focus on the image position and perceive depth, thus producing a sense of stereoscopic effect. Therefore, the transmitted image information can control the ChLCD to operate in either a two-dimensional display mode or a three-dimensional display mode. If the red, green, and / or blue (RGB) layers display the same image, it is a two-dimensional display mode. In a three-dimensional display mode, the upper and lower ChLCD layers display images of either the front image plane / rear image plane or the left viewing angle / right viewing angle, respectively. The details of each embodiment will be described below.

[0040] Please refer to Figure 1, which is a schematic diagram illustrating a display device 100 according to a first embodiment of the present invention. The display device 100 includes a plurality of display panels, including a first display panel 110, a second display panel 120, a third display panel 130, a fourth display panel 140, a fifth display panel 150, and a sixth display panel 160. The first display panel 110, second display panel 120, third display panel 130, fourth display panel 140, fifth display panel 150, and sixth display panel 160 are stacked sequentially. The first display panel 110 displays a first color; the second display panel 120 displays a second color; the third display panel 130 displays a third color; the fourth display panel 140 displays a fourth color; the fifth display panel 150 displays a fifth color; and the sixth display panel 160 displays a sixth color. The first, second, third, fourth, fifth, and sixth colors form a color combination in sequence, and the color combination does not include the first, second, third, fourth, fifth, and sixth colors being blue, blue, green, green, red, and red, respectively.

[0041] In detail, in this embodiment, the color combination includes a first color, a second color, a third color, a fourth color, a fifth color, and a sixth color, which are blue, green, red, blue, green, and red, respectively, but the present invention is not limited thereto. As can be seen from the above color combination, two of these display panels (e.g., the first display panel 110 and the fourth display panel 140) display the same color, and these two display panels respectively display the foreground image and the background image, enabling the display device 100 to operate in a three-dimensional display mode. These two display panels are respectively a left-handed cholesterol liquid crystal panel (CLC panel) and a right-handed cholesterol liquid crystal panel. The first display panel 110, the second display panel 120, and the third display panel 130 are right-handed cholesterol liquid crystal panels; the fourth display panel 140, the fifth display panel 150, and the sixth display panel 160 are left-handed cholesterol liquid crystal panels. Because the polarization of CLC light is opposite, most of the reflected light from the lower CLC layer can penetrate the upper layer. Therefore, the display device 100 of the present invention can be applied to naked-eye electronic paper, and by setting RGB left-hand and right-hand CLC to display the front image plane and back image plane (i.e., foreground image and background image) of the image respectively, the focus of the viewer's two eyes (right eye and left eye) naturally falls on the image position and perceives the depth of field.

[0042] Furthermore, the first display panel 110 includes a first liquid crystal layer 112 and two glass layers GL, with the first liquid crystal layer 112 connected between the two glass layers GL. The second display panel 120 includes a second liquid crystal layer 122 and two glass layers GL, with the second liquid crystal layer 122 connected between the two glass layers GL. The third display panel 130 includes a third liquid crystal layer 132 and two glass layers GL, with the third liquid crystal layer 132 connected between the two glass layers GL. The fourth display panel 140 includes a fourth liquid crystal layer 142 and two glass layers GL, with the fourth liquid crystal layer 142 connected between the two glass layers GL. The fifth display panel 150 includes a fifth liquid crystal layer 152 and two glass layers GL, with the fifth liquid crystal layer 152 connected between the two glass layers GL. The sixth display panel 160 includes a sixth liquid crystal layer 162 and two glass layers GL, with the sixth liquid crystal layer 162 connected between the two glass layers GL. In addition, the display device 100 further includes a light-absorbing layer 170 (Black) and a plurality of adhesive layers 180. The light-absorbing layer 170 is disposed at the bottom of the entire structure and connects to the sixth display panel 160. The adhesive layer 180 may contain optically clear adhesive (OCA) and is disposed between two adjacent display panels.

[0043] Please refer to Figures 1 and 2, where Figure 2 is a schematic diagram illustrating a display device 100a according to a second embodiment of the present invention. The display device 100a includes a plurality of display panels and a light-absorbing layer 170. These display panels include a first display panel 110, a second display panel 120, a third display panel 130, a fourth display panel 140, a fifth display panel 150, and a sixth display panel 160. The structures of the display panels and the light-absorbing layer 170 in Figure 2 are the same as those in Figure 1, and will not be described again. The difference between the display device 100a and the display device 100 in Figure 1 is that the display device 100a does not have an adhesive layer 180, and adjacent display panels are separated by a distance D. Each display panel is connected to other structures (not shown) to maintain a certain distance D between two adjacent display panels. In one embodiment, the distance D may be greater than 0 cm and less than or equal to 5 cm, but the present invention is not limited thereto. Therefore, the display device 100a of the present invention can be applied to naked-eye electronic paper, and allows two adjacent display panels to be separated by air instead of being bonded by OCA, thereby increasing the depth of field of the image and enhancing the three-dimensional visual effect.

[0044] Please refer to Figures 1 and 3, where Figure 3 is a schematic diagram illustrating a display device 100b and a controller 300 according to a third embodiment of the present invention. The display device 100b includes a plurality of display panels. These display panels are stacked sequentially and include a first display panel 110b, a second display panel 120b, a third display panel 130b, a fourth display panel 140b, a fifth display panel 150b, and a sixth display panel 160b. The first display panel 110b displays a first color; the second display panel 120b displays a second color; the third display panel 130b displays a third color; the fourth display panel 140b displays a fourth color; the fifth display panel 150b displays a fifth color; and the sixth display panel 160b displays a sixth color. Any one of the first, second, third, fourth, fifth, and sixth colors is one of blue, green, and red, and two of these display panels display the same color. The display device 100b can switch between a two-dimensional display mode and a three-dimensional display mode. When the display device 100b switches to two-dimensional display mode, the two display panels display the same image; conversely, when the display device 100b switches to three-dimensional display mode, the two display panels display two images respectively, and the two images are different from each other.

[0045] In detail, the display device 100b further includes a circularly polarized lens 200, a light-absorbing layer 170, and multiple adhesive layers 180. The circularly polarized lens 200 faces the first display panel 110b and receives a left-handed and a right-handed polarized light from the display panel, and includes two quarter-wave plates 210 and two linear polarizers 220. The linear polarizers 220 are stacked on top of the quarter-wave plates 210, and these two images are a left-view image and a right-view image, respectively. When the left-handed and right-handed polarized light pass through the circularly polarized lens 200 simultaneously, the right-handed polarized light is converted into linearly polarized light parallel to the fast axis by the quarter-wave plate 210, and the left-handed polarized light is converted into linearly polarized light parallel to the slow axis by the quarter-wave plate 210. The two linear polarizers 220 are parallel to the fast axis and parallel to the slow axis, respectively, thereby filtering out polarized light with different rotational polarizations. The structures of the light absorption layer 170 and the adhesive layer 180 are the same as those of the light absorption layer 170 and the adhesive layer 180 in Figure 1, and will not be described again.

[0046] Display device 100b is electrically connected to controller 300, which controls display device 100b to switch between two-dimensional and three-dimensional display modes. Furthermore, the first display panel 110b, the third display panel 130b, and the fifth display panel 150b are dextrorotatory cholesteric liquid crystal display panels; the second display panel 120b, the fourth display panel 140b, and the sixth display panel 160b are levorotatory cholesteric liquid crystal display panels. Because the polarization of CLC light is opposite, most of the reflected light from the lower CLC layer can penetrate the upper layer.

[0047] The first display panel 110b includes a first liquid crystal layer 112b; the second display panel 120b includes a second liquid crystal layer 122b; the third display panel 130b includes a third liquid crystal layer 132b; the fourth display panel 140 includes a fourth liquid crystal layer 142b; the fifth display panel 150b includes a fifth liquid crystal layer 152b; and the sixth display panel 160b includes a sixth liquid crystal layer 162b. The first liquid crystal layer 112b, the second liquid crystal layer 122b, the third liquid crystal layer 132b, the fourth liquid crystal layer 142b, the fifth liquid crystal layer 152b, and the sixth liquid crystal layer 162b are all electrically connected to the controller 300, and each of them has a connecting glass layer GL on its upper and lower sides. In one embodiment, the first color, the second color, the third color, the fourth color, the fifth color, and the sixth color are blue, blue, green, green, red, and red, respectively, but the present invention is not limited thereto. Therefore, the display device 100b of the present invention can be applied to eyeglass-type electronic paper, and can allow the right eye to see only the image from the right perspective and the left eye to see only the image from the left perspective, thereby simulating the parallax of the two eyes to produce a stereoscopic effect.

[0048] Please refer to Figures 3 and 4, where Figure 4 is a schematic diagram illustrating a display device 100c and a controller 300 according to a fourth embodiment of the present invention. The display device 100c includes a plurality of display panels, a light-absorbing layer 170, and a plurality of adhesive layers 180. These display panels are stacked sequentially and include a first display panel 110c, a second display panel 120c, a third display panel 130c, a fourth display panel 140c, a fifth display panel 150c, and a sixth display panel 160c. The structures of the display panels, light-absorbing layer 170, and adhesive layers 180 of the display device 100c are the same as those of the display panel, light-absorbing layer 170, and adhesive layer 180 of the display device 100b in Figure 3, and will not be described again. Furthermore, the display device 100c is electrically connected to the controller 300, and the controller 300 controls the display device 100c to switch between a two-dimensional display mode and a three-dimensional display mode. Both display panels of these devices display the same color, and the controller 300 controls these two display panels to display a foreground image and a background image respectively, enabling the display device 100c to operate in a three-dimensional display mode. Thus, the display device 100c of the present invention, in conjunction with the controller 300, can control whether to operate in a three-dimensional or two-dimensional display mode by transmitting different image data. When operating in three-dimensional display mode, the upper and lower ChLCD layers display images of (front image plane / rear image plane) or (left viewing angle / right viewing angle) respectively; when operating in two-dimensional display mode, the upper and lower RGB same-color ChLCD layers display the same image. Therefore, the display device 100c of the present invention can be applied to glasses-free electronic paper, and compared to the conventional three-layer ChLCD structure, the present invention has a higher reflectivity (R%).

[0049] Please refer to Figures 1, 2, 3, 4, and 5, where Figure 5 is a flowchart illustrating a display method S0 of a display device according to a fifth embodiment of the present invention. Display method S0 can be applied to the aforementioned display devices 100, 100a, 100b, and 100c. Display method S0 includes steps S02 and S04. Step S02 includes providing a display device 100, 100a, 100b, or 100c. Step S04 includes controlling the display devices 100, 100a, 100b, and 100c via a controller 300, causing the display devices 100, 100a, 100b, and 100c to switch to a two-dimensional display mode or a three-dimensional display mode. Furthermore, for the display device 100b structure (glasses-type architecture) applied to Figure 3, display method S0 may further include providing a circularly polarized pair of glasses 200 facing the first display panel 110b, so that the circularly polarized glasses 200 receive a left-handedly polarized light and a right-handedly polarized light from these display panels. Therefore, the display method S0 of the present invention, when used with display devices 100, 100a, 100b, and 100c containing multiple layers of ChLCD monochrome film, can present a three-dimensional visual experience without the need for an external lens, and can effectively control whether the ChLCD operates in a two-dimensional display mode or a three-dimensional display mode, thereby solving the problem of ripples or display interference that are easily generated by external lenses in the prior art.

[0050] Please refer to Figures 3 and 6, where Figure 6 is a schematic diagram illustrating a display device 100d according to a sixth embodiment of the present invention. The display device 100d includes a plurality of display panels, a light-absorbing layer 170, an adhesive layer 180, and circular polarizing glasses 200. These display panels are stacked sequentially and include a first display panel 110d and a second display panel 120d. The first display panel 110d displays a first color. The second display panel 120d displays a second color, which is the same as the first color (e.g., blue). The display device 100d can switch between a two-dimensional display mode and a three-dimensional display mode. When the display device 100d switches to a two-dimensional display mode, the first display panel 110d and the second display panel 120d display the same image; conversely, when the display device 100d switches to a three-dimensional display mode, the first display panel 110d and the second display panel 120d each display two different images. The structures of the first display panel 110d, the second display panel 120d, the light-absorbing layer 170, the adhesive layer 180, and the circularly polarized glasses 200 are the same as those of the first display panel 110b, the second display panel 120b, the light-absorbing layer 170, the adhesive layer 180, and the circularly polarized glasses 200 in FIG3. Therefore, the display device 100d of the present invention can be applied to eyeglass-type electronic paper to achieve monochrome 3D display.

[0051] Please refer to Figures 6 and 7, where Figure 7 is a schematic diagram illustrating a display device 100e according to a seventh embodiment of the present invention. The display device 100e includes a plurality of display panels, a light-absorbing layer 170, and an adhesive layer 180. These display panels are stacked sequentially and include a first display panel 110e and a second display panel 120e. The structures of the first display panel 110e, the second display panel 120e, the light-absorbing layer 170, and the adhesive layer 180 are the same as those of the first display panel 110d, the second display panel 120d, the light-absorbing layer 170, and the adhesive layer 180 in Figure 6. Therefore, the display device 100e of the present invention can be applied to naked-eye electronic paper to achieve monochrome 3D display.

[0052] Please refer to Figures 3 and 8, where Figure 8 is a schematic diagram illustrating a display device 100f according to an eighth embodiment of the present invention. The display device 100f includes a plurality of display panels, a light-absorbing layer 170, a plurality of adhesive layers 180, and a circular polarizing lens 200. These display panels are stacked sequentially and include a first display panel 110f, a second display panel 120f, a third display panel 130f, and a fourth display panel 140f. The first display panel 110f displays a first color; the second display panel 120f displays a second color; the third display panel 130f displays a third color; and the fourth display panel 140f displays a fourth color. The second color is the same as the first color (e.g., blue), and the fourth color is the same as the third color (e.g., yellow) but different from the first color. When the display device 100f switches to a two-dimensional display mode, the first display panel 110f and the second display panel 120f display the same image, and the third display panel 130f and the fourth display panel 140f display another identical image. Conversely, when the display device 100f switches to 3D display mode, the first display panel 110f and the second display panel 120f each display two images, which are different from each other, while the third display panel 130f and the fourth display panel 140f each display two other images, which are also different from each other. The structures of the first display panel 110f, the second display panel 120f, the third display panel 130f, the fourth display panel 140f, the light absorption layer 170, the adhesive layer 180, and the circularly polarized glasses 200 are the same as those of the first display panel 110b, the second display panel 120b, the third display panel 130b, the fourth display panel 140b, the light absorption layer 170, the adhesive layer 180, and the circularly polarized glasses 200 in Figure 3. Therefore, the display device 100f of the present invention can be applied to eyeglass-type electronic paper to achieve dual-color 3D display.

[0053] Please refer to Figures 8 and 9, where Figure 9 is a schematic diagram illustrating a display device 100g according to a ninth embodiment of the present invention. The display device 100g includes a plurality of display panels, a light-absorbing layer 170, and an adhesive layer 180. These display panels are stacked sequentially and include a first display panel 110g, a second display panel 120g, a third display panel 130g, and a fourth display panel 140g. The structures of the first display panel 110g, the second display panel 120g, the third display panel 130g, the fourth display panel 140g, the light-absorbing layer 170, and the adhesive layer 180 are the same as those of the first display panel 110f, the second display panel 120f, the third display panel 130f, the fourth display panel 140f, the light-absorbing layer 170, and the adhesive layer 180 in Figure 8, respectively. Therefore, the display device 100g of the present invention can be applied to naked-eye electronic paper to achieve dual-color 3D display. Furthermore, the display devices 100f and 100g of the present invention can select any two complementary colors of ChLCD to achieve 3D display. For example, cyan and red can form a black-and-white red-and-cyan 3D display, and blue and yellow can form a black-and-white yellow-and-blue 3D display.

[0054] In one embodiment, the aforementioned controller 300 may be a display control chip, a central processing unit (CPU), or other display processor. Furthermore, the display method S0 of FIG5 can also be applied to the display devices 100d, 100e, 100f, and 100g described in FIG6, 7, 8, and 9. The present invention is not limited to the above description.

[0055] As can be seen from the above embodiments, the present invention has the following advantages: First, it can be used in the electronic paper industry to produce 3D display products. Besides entertainment, 3D displays can be used in education to demonstrate anatomy, geography, molecular structures, etc., allowing students to grasp knowledge more vividly. In the medical field, it can be applied to case demonstrations, organ models, etc., allowing doctors to more accurately assess patients' conditions. Second, the transmitted image information can control the ChLCD to operate in two-dimensional or three-dimensional display mode, presenting a three-dimensional visual experience without the need for external lenses. Compared to the conventional three-layer ChLCD structure, the present invention has higher reflectivity. Third, it can be applied to eyeglass-type or naked-eye electronic paper to achieve monochrome or dual-color 3D display, and any two complementary colors of the ChLCD can be selected to achieve 3D display.

[0056] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the invention shall be determined by the appended claims.

Claims

1. A display device, characterized in that, Include: Multiple display panels, including: A first display panel displays a first color; A second display panel displays a second color; A third display panel displays a third color; A fourth display panel displays a fourth color; A fifth display panel, displaying a fifth color; and A sixth display panel displays a sixth color; The first display panel, the second display panel, the third display panel, the fourth display panel, the fifth display panel, and the sixth display panel are stacked sequentially. The first color, the second color, the third color, the fourth color, the fifth color, and the sixth color form a color combination in sequence. The color combination does not include the first color, the second color, the third color, the fourth color, the fifth color, and the sixth color, which are blue, blue, green, green, red, and red, respectively.

2. The display device as claimed in claim 1, characterized in that, The multiple display panels display the same color, and the two display panels respectively display a foreground image and a background image, so that the display device operates in a three-dimensional display mode.

3. The display device as claimed in claim 2, characterized in that, The two of the plurality of display panels are a L-cholesterol liquid crystal display panel and a D-cholesterol liquid crystal display panel, respectively.

4. The display device as claimed in claim 1, characterized in that, The color combination includes the first color, the second color, the third color, the fourth color, the fifth color, and the sixth color, which are blue, green, red, blue, green, and red, respectively. The multiple display panels are spaced apart by a gap of less than or equal to 5 centimeters.

5. A display device, characterized in that, Include: Multiple display panels are stacked sequentially and include: A first display panel displays a first color; A second display panel displays a second color; A third display panel displays a third color; A fourth display panel displays a fourth color; A fifth display panel, displaying a fifth color; and A sixth display panel displays a sixth color; Wherein, any one of the first color, the second color, the third color, the fourth color, the fifth color, and the sixth color is one of blue, green, and red, and two of the plurality of display panels display the same color, and the display device switches to a two-dimensional display mode or a three-dimensional display mode. When the display device switches to the two-dimensional display mode, the two display panels of the plurality of display panels display the same image. When the display device switches to the three-dimensional display mode, the two images on the multiple display panels are displayed respectively, and the two images are different from each other.

6. The display device as claimed in claim 5, characterized in that, It also includes: A circular polarized pair of glasses, facing the first display panel and receiving a left-handed polarized light and a right-handed polarized light from the plurality of display panels, and comprising: A quarter-wave plate; and A linear polarizer, superimposed with this quarter-wave plate; The two images are a left-view image and a right-view image, respectively.

7. The display device as claimed in claim 5, characterized in that, The two images are a foreground image and a background image, respectively, enabling the display device to operate in the three-dimensional display mode.

8. The display device as claimed in claim 5, characterized in that, The two of the plurality of display panels are a L-cholesterol liquid crystal display panel and a D-cholesterol liquid crystal display panel, respectively.

9. The display device as claimed in claim 5, characterized in that, The first color, the second color, the third color, the fourth color, the fifth color, and the sixth color are blue, blue, green, green, red, and red, respectively.

10. The display device as claimed in claim 5, characterized in that, The first color, the second color, the third color, the fourth color, the fifth color, and the sixth color are blue, green, red, blue, green, and red, respectively. The adjacent display panels are separated by a gap of less than or equal to 5 centimeters.

11. A display method for a display device, characterized in that, Include: Provide a display device; and The display device is controlled by a controller, which switches the display device to a two-dimensional display mode or a three-dimensional display mode. The display device includes: Multiple display panels are stacked sequentially and include: A first display panel displays a first color; A second display panel displays a second color; A third display panel displays a third color; A fourth display panel displays a fourth color; A fifth display panel, displaying a fifth color; and A sixth display panel displays a sixth color; Wherein, any one of the first color, the second color, the third color, the fourth color, the fifth color, and the sixth color is one of blue, green, and red, and two of the plurality of display panels display the same color; When the display device switches to the two-dimensional display mode, the controller controls the two display panels of the plurality of display panels to display the same image. When the display device switches to the three-dimensional display mode, the controller controls the two of the multiple display panels to display two images respectively, and the two images are different from each other.

12. The display method of the display device as claimed in claim 11, characterized in that, It also includes: A circular polarized lens is provided facing the first display panel, such that the circular polarized lens receives a left-handed polarized light and a right-handed polarized light from the plurality of display panels; The circular polarized glasses include: A quarter-wave plate; and A linear polarizer, superimposed with this quarter-wave plate; The two images are a left-view image and a right-view image, respectively.

13. The display method of the display device as described in claim 11, characterized in that, The two images are a foreground image and a background image, respectively, enabling the display device to operate in the three-dimensional display mode.

14. The display method of the display device as described in claim 11, characterized in that, The two of the plurality of display panels are a L-cholesterol liquid crystal display panel and a D-cholesterol liquid crystal display panel, respectively.

15. The display method of the display device as claimed in claim 11, characterized in that, The first color, the second color, the third color, the fourth color, the fifth color, and the sixth color are blue, blue, green, green, red, and red, respectively.

16. The display method of the display device as claimed in claim 11, characterized in that, The first color, the second color, the third color, the fourth color, the fifth color, and the sixth color are blue, green, red, blue, green, and red, respectively. The adjacent display panels are separated by a gap of less than or equal to 5 centimeters.

17. A display device, characterized in that, Include: Multiple display panels are stacked sequentially and include: A first display panel, displaying a first color; and A second display panel displays a second color, which is the same as the first color; The display device can be switched between a two-dimensional display mode and a three-dimensional display mode. When the display device switches to the two-dimensional display mode, the first display panel and the second display panel display the same image; When the display device switches to the three-dimensional display mode, the first display panel and the second display panel display two images respectively, and the two images are different from each other.

18. The display device as claimed in claim 17, characterized in that, The plurality of display panels further include: A third display panel displays a third color; and A fourth display panel displays a fourth color, which is the same as the third color and different from the first color; When the display device switches to the two-dimensional display mode, the third display panel and the fourth display panel display another identical image; When the display device switches to the three-dimensional display mode, the third display panel and the fourth display panel respectively display two other images, and the two other images are different from each other.

19. The display device as claimed in claim 17, characterized in that, It also includes: A circular polarized pair of glasses, facing the first display panel and receiving a left-handed polarized light and a right-handed polarized light from the plurality of display panels, and comprising: A quarter-wave plate; and A linear polarizer, superimposed with this quarter-wave plate; The two images are a left-view image and a right-view image, respectively.

20. The display device as claimed in claim 17, characterized in that, The two images are a foreground image and a background image, respectively, enabling the display device to operate in the three-dimensional display mode.

Images