Display device

Abstract

The invention discloses a display device which comprises a display panel and a transparent display panel. The transparent display panel is arranged in front of the display panel. The display panel is separated from the transparent display panel by a certain distance. In a picture frame time of the display device, the display panel displays a first picture, the transparent display panel displays a second picture, and the first picture and the second picture are matched to provide an actual depth-of-field picture. The picture frame time comprises a plurality of sub-picture frame times performed according to a time sequence. The display panel displays a plurality of sub-frames at a plurality of sub-frame times, respectively. The plurality of sub-pictures are different from each other, and the plurality of sub-pictures can be superposed into a first picture in the picture frame time. In addition, other various display devices are also provided.

Description

Technical Field

[0001] The present invention relates to a display device. Background Art

[0002] In recent years, with the progress of display technology, users have higher and higher requirements for display quality (such as image resolution, color saturation, etc.). In addition to high image resolution and high color saturation, in some applications, users also hope that the display can display stereoscopic images.

[0003] Current stereoscopic image display technologies can be generally divided into stereoscopic displays that require users to wear special glasses and naked eyes type (or namely auto-stereoscopic) stereoscopic displays that can be directly viewed without glasses. Conventional naked eyes type stereoscopic displays have the problem that the picture makes users dizzy. Therefore, some other types of naked eyes type stereoscopic displays have been proposed, such as multi-layer displays. The multi-layer display includes a display panel and a transparent display panel disposed in front of the display panel, and there is an actual distance between the display panel and the transparent display panel. Since the multi-layer display has a true depth attribute, it does not encounter the problem that the picture makes users dizzy. However, the display panel and the transparent display panel of the multi-layer display overlap, and moiré fringes are easily generated, seriously affecting the user's viewing experience. Summary of the Invention

[0004] An embodiment of the present invention provides a display device that can suppress moiré fringes.

[0005] Another embodiment of the present invention provides a display device that can correspondingly suppress moiré fringes according to the change in the distance between the transparent display panel and the display panel.

[0006] Another embodiment of the present invention provides a display device that can suppress moiré fringes.

[0007] The display device according to an embodiment of the present invention includes a display panel and a transparent display panel. The transparent display panel is disposed in front of the display panel. The display panel and the transparent display panel are separated by a distance. Within one frame time of the display device, the display panel displays a first picture, and the transparent display panel displays a second picture. The first picture and the second picture are matched to provide an actual depth-of-field picture. The frame time includes a plurality of sub-frame times in sequence. The display panel displays a plurality of sub-pictures at the plurality of sub-frame times respectively. The plurality of sub-pictures are different from each other, and the plurality of sub-pictures can be superimposed into the first picture within the frame time.

[0008] Another embodiment of the display device of the present invention includes a display panel and a transparent display panel. The transparent display panel is disposed in front of the display panel. The display panel and the transparent display panel are separated by a distance. This distance is adjustable. During the first frame time of the display device, the display panel displays a first image, and the transparent display panel displays a second image. The first image and the second image are matched to provide a first actual depth-of-field image. The first frame time includes a plurality of first sub-frame times in sequence. The display panel displays a plurality of first sub-images at the plurality of first sub-frame times respectively. The plurality of first sub-images are different from each other, and the plurality of first sub-images can be superimposed into the first image during the first frame time. During the second frame time of the display device, the display panel displays a third image, and the transparent display panel displays a fourth image. The third image and the fourth image are matched to provide a second actual depth-of-field image. The second frame time includes a plurality of second sub-frame times in sequence. The display panel displays a plurality of second sub-images at the plurality of second sub-frame times respectively. The plurality of second sub-images are different from each other, and the plurality of second sub-images can be superimposed into the third image during the second frame time. The second frame time is before or after the first frame time, and the time length of the first frame time is substantially equal to the time length of the second frame time. During the first frame time, the distance between the display panel and the transparent display panel is a first distance. During the second frame time, the distance between the display panel and the transparent display panel is a second distance, and the second distance is less than the first distance. The number of second sub-images displayed by the display panel during the second frame time is greater than the number of first sub-images displayed by the display panel during the first frame time.

[0009] Another embodiment of the display device of the present invention includes a display panel, a transparent display panel, and an electronic control element. The transparent display panel is disposed in front of the display panel. The display panel and the transparent display panel are separated by a distance. The electronic control element is disposed between the transparent display panel and the display panel. During a frame time of the display device, the display panel displays a first image, and the transparent display panel displays a second image. The first image and the second image are matched to provide an actual depth-of-field image. The frame time includes a plurality of sub-frame times in sequence. The electronic control element displays a plurality of scattering images at the plurality of sub-frame times respectively, and the spatial distributions of the plurality of scattering images in the electronic control element are different from each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figures 1A to 1C is a schematic cross-sectional view of a display device 10 according to an embodiment of the present invention.

[0011] Figure 2 is a schematic cross-sectional view of a display device 10 according to an embodiment of the present invention.

[0012] Figures 3A to 3C is a schematic exploded perspective view of a display device 10 according to an embodiment of the present invention.

[0013] Figure 4 Schematic perspective exploded view of a display device 10 according to an embodiment of the present invention.

[0014] Figures 5A to 5C Schematic cross-sectional view of a display device 10A according to another embodiment of the present invention.

[0015] Figure 6 Schematic cross-sectional view of a display device 10A according to another embodiment of the present invention.

[0016] Figures 7A to 7C Schematic perspective exploded view of a display device 10A according to another embodiment of the present invention.

[0017] Figure 8 Schematic perspective exploded view of a display device 10A according to another embodiment of the present invention.

[0018] Figures 9A to 9B Schematic cross-sectional view of a display device 10B according to yet another embodiment of the present invention.

[0019] Figure 10 Schematic cross-sectional view of a display device 10B according to yet another embodiment of the present invention.

[0020] Figures 11A to 11B Schematic perspective exploded view of a display device 10B according to yet another embodiment of the present invention.

[0021] Figure 12 Schematic perspective exploded view of a display device 10B according to yet another embodiment of the present invention.

[0022] Figures 13A to 13B Schematic cross-sectional view of a display device 10C according to still another embodiment of the present invention.

[0023] Figure 14 Schematic cross-sectional view of a display device 10C according to still another embodiment of the present invention.

[0024] Figures 15A to 15B Schematic perspective exploded view of a display device 10C according to still another embodiment of the present invention.

[0025] Figure 16 Schematic perspective exploded view of a display device 10C according to still another embodiment of the present invention.

[0026] Figures 17A to 17C Schematic cross-sectional view of a display device 10C according to still another embodiment of the present invention.

[0027] Figure 18 Schematic cross-sectional view of a display device 10C according to still another embodiment of the present invention.

[0028] Figures 19A to 19CSchematic perspective exploded view of the display device 10C according to another embodiment of the present invention.

[0029] Figure 20 Schematic perspective exploded view of the display device 10C according to another embodiment of the present invention.

[0030] Figures 21A to 21C Schematic cross-sectional view of the display device 10D according to an embodiment of the present invention.

[0031] Figure 22 Schematic cross-sectional view of the display device 10D according to an embodiment of the present invention.

[0032] Figures 23A to 23C Schematic perspective exploded view of the display device 10D according to an embodiment of the present invention.

[0033] Figure 24 Shows the display effects superimposed in the display device 10D at multiple sub-frame times t1, t2, t3 (i.e., one frame time T) corresponding to Figure 23A , Figure 23B and Figure 23C .

[0034] Wherein, reference numerals:

[0035] 10, 10A, 10B, 10C, 10D: Display device

[0036] 100: Display panel

[0037] 200: Transparent display panel

[0038] 212: Pixel area

[0039] 214: Light-transmitting area

[0040] 300: Electric control element

[0041] b1, b2, b3: Black pattern

[0042] D: Distance

[0043] D1: First distance

[0044] D2: Second distance

[0045] M1: First screen

[0046] M2: Second screen

[0047] M3: Third screen

[0048] M4: Fourth screen

[0049] m1, m2, m3: Sub-screen

[0050] m11, m12: First sub-screen

[0051] m21, m22, m23: Second sub-screen

[0052] R: Black block row

[0053] s1, s2, s3: Scattering screen

[0054] T: Frame time

[0055] T1: First frame time

[0056] T2: Second frame time

[0057] t1, t2, t3: Sub-frame time

[0058] t11, t12: First sub-frame time

[0059] t21, t22, t23: Second sub-frame time

[0060] x: First direction

[0061] y: Second direction Detailed implementation mode

[0062] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals will be used in the drawings and the description to refer to the same or like parts.

[0063] It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, no intervening element is present. As used herein, "connected" can refer to physical and / or electrical connection. Furthermore, "electrically connected" or "coupled" can mean that there are other elements between two elements.

[0064] As used herein, "about", "approximate", or "substantially" includes the stated value and the average value within an acceptable deviation range of a specific value determined by a person of ordinary skill in the art, taking into account the specific amount of the measurement being discussed and the errors associated with the measurement (i.e., the limitations of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, "about", "approximate", or "substantially" as used herein can be selected according to optical properties, etching properties, or other properties to a more acceptable deviation range or standard deviation, rather than applying one standard deviation to all properties.

[0065] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and this invention, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0066] Figures 1A to 1C A cross-sectional schematic view of a display device 10 according to an embodiment of the present invention. In particular, Figures 1A to 1C Shows the operating states of the display device 10 at sub-frame times t1, t2, and t3 respectively, where the sub-frame times t1, t2, and t3 are in sequence within the same frame time T of the display device 10. Figure 2 A cross-sectional schematic view of a display device 10 according to an embodiment of the present invention. In particular, Figure 2 Shows the display device 10 corresponding to Figure 1A , Figure 1B and Figure 1C The display effects superimposed in multiple sub-frame times t1, t2, t3 (i.e., one frame time T).

[0067] Figures 3A to 3C A three-dimensional exploded schematic view of a display device 10 according to an embodiment of the present invention. In particular, Figures 3A to 3C Shows the operating states of the display device 10 at sub-frame times t1, t2, and t3 respectively, where the sub-frame times t1, t2, and t3 are in sequence within the same frame time T of the display device 10. Figure 4 A three-dimensional exploded schematic view of a display device 10 according to an embodiment of the present invention. In particular, Figure 4 Shows the display device 10 corresponding to Figure 3A , Figure 3B and Figure 3C The display effects superimposed in multiple sub-frame times t1, t2, t3 (i.e., one frame time T). Figure 3A , Figure 3B , Figure 3C and Figure 4 Correspond to Figure 1A , Figure 1B , Figure 1C and Figure 2 .

[0068] Please refer to Figures 1A to 4, the display device 10 includes a display panel 100 and a transparent display panel 200. The transparent display panel 200 is disposed in front of the display panel 100. The display panel 100 and the transparent display panel 200 are separated by a distance D. In some embodiments, the display panel 100 can be selectively a non-self-emitting display panel, such as, but not limited to, a liquid crystal display panel. The transparent display panel 200 includes a plurality of pixel regions 212 and a plurality of light-transmitting regions 214 interspersed among the plurality of pixel regions 212. In some embodiments, the transparent display panel 200 is, for example, a micro light-emitting diode transparent display panel, but the present invention is not limited thereto.

[0069] Please refer to Figure 2 and Figure 4 , within one frame time T of the display device 10, the display panel 100 displays a first image M1, and the transparent display panel 200 displays a second image M2. Since the display panel 100 and the transparent display panel 200 are separated by a real distance D, the combination of the first image M1 displayed by the display panel 100 and the second image M2 displayed by the transparent display panel 200 can provide an actual depth-of-field image. After the actual depth-of-field image is received by the human eye, the brain can perceive a stereoscopic image.

[0070] For example, in some embodiments, the first image M1 displayed by the rear display panel 100 can be a baseball glove image (not shown), and the second image M2 displayed by the front transparent display panel 200 can be a baseball image (not shown). The baseball image displayed by the front transparent display panel 200 can be directly received by the human eye, and the baseball glove image displayed by the rear display panel 100 can also be received by the human eye after passing through the light-transmitting region 214 of the transparent display panel 200, thereby enabling the brain to perceive a three-dimensional image (e.g., an image of a baseball glove catching a ball).

[0071] Please refer to Figure 3A , Figure 3B , Figure 3C and Figure 4 , one frame time T of the display device 10 includes a plurality of sub-frame times t1, t2, t3 in sequence. One frame time T is equal to the sum of the plurality of sub-frame times t1, t2, t3. The display panel 100 displays a plurality of sub-images m1, m2, m3 in the plurality of sub-frame times t1, t2, t3 of the same frame time T respectively. In particular, the plurality of sub-images m1, m2, m3 are different from each other, and the plurality of sub-images m1, m2, m3 can be superimposed into the first image M1 within the frame time T.

[0072] It is worth mentioning that the first screen M1 to be displayed by the display panel 100 within a frame time T is divided into multiple different sub-screens m1, m2, and m3, and the multiple sub-screens m1, m2, and m3 are respectively displayed in multiple sub-frame times t1, t2, and t3 of the frame time T. Therefore, at various locations of the display device 10, the differences in the spatial frequencies of the multiple different sub-screens m1, m2, and m3 from the spatial frequency of the same second screen M2 of the transparent display panel 200 are different, that is, the difference in the spatial frequencies between the transparent display panel 200 and the display panel 100 is not fixed, so that the Moire pattern between the display panel 100 and the transparent display panel 200 can be suppressed. That is to say, by increasing the scanning frequency of the display panel 100, the difference in the spatial frequencies between the display panel 100 and the transparent display panel 200 can be changed over time, effectively suppressing the Moire pattern.

[0073] Please refer to Figure 3A 、 Figure 3B and Figure 3C , in some embodiments, each sub-screen m1 / m2 / m3 has a black pattern b1 / b2 / b3, and the multiple black patterns b1, b2, and b3 of the multiple sub-screens m1, m2, and m3 have different spatial distributions in the display panel 100. For example, in some embodiments, the black pattern b1 / b2 / b3 of each sub-screen m1 / m2 / m3 may include multiple black stripes spaced apart from each other, and the multiple black stripes of the multiple black patterns b1, b2, and b3 of the multiple sub-screens m1, m2, and m3 are misaligned with each other. However, the present invention is not limited thereto. In other embodiments, the multiple sub-screens m1, m2, and m3 may also be any other type of screen, and the present invention does not impose any limitations.

[0074] It must be noted here that the following embodiments follow the component numbers and some content of the foregoing embodiments, where the same numbers are used to represent the same or similar components, and the description of the same technical content is omitted. For the description of the omitted part, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

[0075] Figures 5A to 5C is a cross-sectional schematic diagram of a display device 10A according to another embodiment of the present invention. In particular, Figures 5A to 5C shows the working states of the display device 10A in the sub-frame time t1, the sub-frame time t2, and the sub-frame time t3 respectively, where the sub-frame time t1, the sub-frame time t2, and the sub-frame time t3 are in sequence within the same frame time T of the display device 10A. Figure 6 is a cross-sectional schematic diagram of a display device 10A according to another embodiment of the present invention. In particular, Figure 6 shows the display device 10A corresponding to Figure 5A 、 Figure 5Band Figure 5C The display effect superimposed from multiple sub-frame times t1, t2, t3 (i.e., one frame time T) of Figure 5C .

[0076] Figures 7A to 7C Is a three-dimensional exploded schematic diagram of the display device 10A according to another embodiment of the present invention. In particular, Figures 7A to 7C Shows the working states of the display device 10A in the sub-frame time t1, the sub-frame time t2, and the sub-frame time t3 respectively, where the sub-frame time t1, the sub-frame time t2, and the sub-frame time t3 are in sequence within the same frame time T of the display device 10A. Figure 8 Is a three-dimensional exploded schematic diagram of the display device 10A according to another embodiment of the present invention. In particular, Figure 8 Shows the display device 10A corresponding to Figure 7A , Figure 7B and Figure 7C The display effect superimposed from multiple sub-frame times t1, t2, t3 (i.e., one frame time T). Figure 7A , Figure 7B , Figure 7C and Figure 8 Correspond to Figure 5A , Figure 5B , Figure 5C and Figure 6 respectively.

[0077] The display device 10A of this embodiment is similar to the aforementioned display device 10, and the difference between the two is that the black patterns b1 / b2 / b3 of the sub-pictures m1 / m2 / m3 of the two are different. Please refer to Figures 3A to 3C , in the previous embodiment, the black patterns b1 / b2 / b3 of the sub-pictures m1 / m2 / m3 of the display panel 100 are multiple vertical black stripes. Please refer to Figures 7A to 7C , in this embodiment, the black patterns b1 / b2 / b3 of the sub-pictures m1 / m2 / m3 of the display panel 100 are multiple oblique black stripes. Similarly, the display device 10A of this embodiment also has the effect of suppressing moiré fringes.

[0078] Figures 9A to 9B Is a cross-sectional schematic diagram of the display device 10B according to another embodiment of the present invention. In particular, Figures 9A to 9B Shows the working states of the display device 10B in the sub-frame time t1 and the sub-frame time t2 respectively, where the sub-frame time t1 and the sub-frame time t2 are in sequence within the same frame time T of the display device 10A. One frame time T is equal to the sum of the multiple sub-frame times t1, t2. Figure 10 Is a cross-sectional schematic diagram of the display device 10B according to another embodiment of the present invention. In particular, Figure 10 Shows the display device 10B corresponding to Figure 9A andFigure 9B The display effect is superimposed on multiple sub-frame times t1 and t2 (that is, one frame time T).

[0079] Figures 11A to 11B FIG. 1 is a three-dimensional exploded schematic diagram of a display device 10B according to another embodiment of the present invention. In particular, Figures 11A to 11B The working status of the display device 10B is shown in the sub-frame time t1 and the sub-frame time t2 respectively, wherein the sub-frame time t1 and the sub-frame time t2 are performed in a time sequence within the same frame time T of the display device 10B. Figure 12 FIG. 1 is a three-dimensional exploded schematic diagram of a display device 10B according to another embodiment of the present invention. In particular, Figure 12 The display device 10B corresponds to Figure 11A and Figure 11B The display effect is superimposed on multiple sub-frame times t1 and t2 (that is, one frame time T). Figure 11A , Figure 11B and Figure 12 Corresponding to Figure 9A , Figure 9B and Figure 10 .

[0080] The display device 10B of this embodiment is similar to the aforementioned display device 10, and the difference between the two is that the black patterns b1 / b2 / b3 of the sub-pictures m1 / m2 / m3 of the two are different. Figures 11A to 11B Specifically, in the present embodiment, the black pattern b1 / b2 of the sub-image m1 / m2 of the display panel 100 includes a plurality of black blocks, the plurality of black blocks are arranged into a plurality of black block rows R, the plurality of black blocks of each black block row R are arranged in a first direction x, the plurality of black block rows R are arranged in a second direction y interlaced with the first direction x, and the plurality of black blocks of each black block row R are arranged alternately with the plurality of black blocks of the next black block row R. In short, in the present embodiment, the sub-image m1 / m2 may be a checkerboard image. The plurality of black blocks of the black pattern b1 of the sub-image m1 are misaligned with the plurality of black blocks of the black pattern b2 of the sub-image m2. Similarly, the display device 10B of the present embodiment also has the effect of suppressing moiré fringes.

[0081] Figures 13A to 13B FIG. 1 is a cross-sectional view of a display device 10C according to another embodiment of the present invention. In particular, Figures 13A to 13B The working state of the display device 10C is shown in the first sub-frame time t11 and the first sub-frame time t12, respectively, wherein the first sub-frame time t11 and the first sub-frame time t12 are performed in sequence within the same first frame time T1 of the display device 10C. The first frame time T1 is equal to the sum of multiple first sub-frame times t11 and t12. Figure 14Schematic cross-sectional view of the display device 10C according to another embodiment of the present invention. In particular, Figure 14 shows the display effect superimposed by the display device 10C in a plurality of first sub-frame times t11, t12 corresponding to Figure 13A and Figure 13B within one first frame time T1.

[0082] Figures 15A to 15B Schematic exploded perspective view of the display device 10C according to another embodiment of the present invention. In particular, Figures 15A to 15B shows the operating states of the display device 10C in the first sub-frame time t11 and the first sub-frame time t12 respectively, where the first sub-frame time t11 and the first sub-frame time t12 are in sequence within the same first frame time T1 of the display device 10C. Figure 16 Schematic exploded perspective view of the display device 10C according to another embodiment of the present invention. In particular, Figure 16 shows the display effect superimposed by the display device 10C in a plurality of first sub-frame times t11, t12 corresponding to Figures 15A to 15B within one first frame time T1. Figure 15A , Figure 15B and Figure 16 correspond to Figure 13A , Figure 13B and Figure 14 respectively.

[0083] Figures 17A to 17C Schematic cross-sectional view of the display device 10C according to another embodiment of the present invention. In particular, Figures 17A to 17C shows the operating states of the display device 10C in the second sub-frame time t21, the second sub-frame time t22 and the second sub-frame time t23 respectively, where the second sub-frame time t21, the second sub-frame time t22 and the second sub-frame time t23 are in sequence within the same second frame time T2 of the display device 10C. The second frame time T2 is equal to the sum of the plurality of second sub-frame times t21, t22, t23. Figure 18 Schematic cross-sectional view of the display device 10C according to another embodiment of the present invention. In particular, Figure 18 shows the display effect superimposed by the display device 10C in a plurality of second sub-frame times t21, t22, t23 corresponding to Figure 17A , Figure 17B and Figure 17C within one second frame time T2.

[0084] Figures 19A to 19C Schematic exploded perspective view of the display device 10C according to another embodiment of the present invention. In particular, Figures 19A to 19CShows the operating states of the display device 10C at the second sub-frame times t21, t22, and t23 respectively, where the second sub-frame times t21, t22, and t23 are sequential within the same second frame time T2 of the display device 10C. Figure 20 Is a three-dimensional exploded view of the display device 10C according to another embodiment of the present invention. In particular, Figure 20 Shows the display device 10C corresponding to Figure 19A , Figure 19B And Figure 19C The display effects superimposed in a plurality of second sub-frame times t21, t22, t23 (i.e., one second frame time T2). Figure 19A , Figure 19B , Figure 19C And Figure 20 Correspond to Figure 17A , Figure 17B , Figure 17C And Figure 18 .

[0085] Please refer to Figures 13A to 20 , the display device 10C of this embodiment is similar to the aforementioned display device 10. The difference between the two is that in this embodiment, the distance D between the display panel 100 and the transparent display panel 200 of the display device 10C is adjustable. For example, in some embodiments, a spacer (not shown) may be provided between the display panel 100 and the transparent display panel 200. By increasing or decreasing the number of spacers, the distance D between the display panel 100 and the transparent display panel 200 can be adjusted, but the present invention is not limited thereto. In addition, in this embodiment, when the distance D between the display panel 100 and the transparent display panel 200 of the display device 10D is adjusted, the number of sub-images displayed by the display panel 100 within a frame time can be changed accordingly, thereby achieving a better moiré suppression effect. The following will be described with reference to Figures 13A to 20 For example.

[0086] Please refer to Figures 13A to 13B , within the first frame time T1, the distance D between the display panel 100 and the transparent display panel 200 is the first distance D1. Please refer to Figures 13A to 13B , Figure 14 , Figures 15A to 15B And Figure 16, within the first frame time T1 (i.e., the sum of multiple first sub-frame times t11, t12), the display panel 100 displays the first picture M1, and the transparent display panel 200 displays the second picture M2. The first picture M1 and the second picture M2 are matched to provide the first actual depth-of-field picture. The first frame time T1 includes multiple first sub-frame times t11, t12 in sequence. The display panel 10C displays multiple first sub-pictures m11, m12 at multiple first sub-frame times t11, t12 respectively. The multiple first sub-pictures m11, m12 are different from each other, and the multiple first sub-pictures m11, m12 can be accumulated into the first picture M1 within the first frame time T1.

[0087] Please refer to Figures 13A to 13B , Figures 17A to 17C , the second frame time T2 is before or after the first frame time T1, and the time length of the first frame time T1 is substantially equal to the time length of the second frame time T2. Within the second frame time T2, the distance D between the display panel 100 and the transparent display panel 200 is the second distance D2, and the second distance D2 is less than the first distance D1. Please refer to Figures 17A to 17C , Figure 18 , Figures 19A to 19C and Figure 20 , within the second frame time T2 of the display device 10C, the display panel 100 displays the third picture M3, and the transparent display panel 200 displays the fourth picture M4. The third picture M3 and the fourth picture M4 are matched to provide the second actual depth-of-field picture. The second frame time T2 includes multiple second sub-frame times t21, t22, t23 in sequence. The display panel 100C displays multiple second sub-pictures m21, m22, m23 at multiple second sub-frame times t21, t22, t23 respectively. The multiple second sub-pictures m21, m22, m23 are different from each other, and the multiple second sub-pictures m21, m22, m23 can be accumulated into the third picture M3 within multiple second sub-frame times t21, t22, t23 (i.e., the second frame time T2).

[0088] It should be noted that during the first frame time T1 and the second frame time T2, the distance D between the display panel 100 and the transparent display panel 200 is different. The number of second sub-images m21, m22, m23 displayed by the display panel 100C during the second frame time T2 (e.g., 3) is also different from the number of first sub-images m11, m12 displayed by the display panel 100 during the first frame time T1 (e.g., 2). The distance D between the display panel 100 and the transparent display panel 200 during the second frame time T2 is less than the distance D between the display panel 100 and the transparent display panel 200 during the second frame time T2, and the number of second sub-images m21, m22, m23 displayed by the display panel 100 during the second frame time T2 (e.g., 3) is greater than the number of first sub-images m11, m12 displayed by the display panel 100 during the first frame time T1 (e.g., 2).

[0089] That is to say, if the second frame time T2 is after the first frame time T1 and the distance D between the display panel 100 and the transparent display panel 200 becomes smaller (i.e., changes from a larger first distance D1 to a smaller second distance D2), within the frame time of the same time length, the number of sub-images segmented will become more; if the second frame time T2 is before the first frame time T1, that is, the distance D between the display panel 100 and the transparent display panel 200 becomes larger (i.e., changes from a smaller second distance D2 to a larger first distance D1), within the frame time of the same time length, the number of sub-images segmented will become less. Thereby, the display device 10C can better suppress moiré patterns in response to the change in the distance D between the display panel 100 and the transparent display panel 200.

[0090] Figures 21A to 21C It is a cross-sectional schematic diagram of a display device 10D according to an embodiment of the present invention. In particular, Figures 21A to 21C shows the working states of the display device 10D during sub-frame times t1, t2, and t3 respectively, where the sub-frame time t1, the sub-frame time t2, and the sub-frame time t3 are in sequence within the same frame time T of the display device 10D. One frame time T is equal to the sum of multiple sub-frame times t1, t2, and t3. Figure 22 It is a cross-sectional schematic diagram of a display device 10D according to an embodiment of the present invention. In particular, Figure 22 shows the display effect superimposed by the display device 10D during multiple sub-frame times t1, t2, and t3 (i.e., one frame time T) corresponding to Figures 21A to 21C

[0091] Figures 23A to 23C It is a three-dimensional exploded schematic diagram of a display device 10D according to an embodiment of the present invention. In particular, Figures 23A to 23C ​Shows the operating states of the display device 10D in multiple sub-frame times t1, t2, and t3 respectively, where the sub-frame times t1, t2, and t3 are sequential within the same frame time T of the display device 10D. Figure 24 Is a three-dimensional exploded schematic diagram of the display device 10D according to an embodiment of the present invention. In particular, Figure 24 Shows the display device 10D corresponding to Figure 23A , Figure 23B And Figure 23C The display effects superimposed in multiple sub-frame times t1, t2, t3 (i.e., one frame time T). Figure 23A , Figure 23B , Figure 23C And Figure 24 Correspond to Figure 21A , Figure 21B , Figure 21C And Figure 22 .

[0092] Figures 21A to 24 , the display device 10D of this embodiment is similar to the aforementioned display device 10. The difference between the two is that the display device 10D further includes an electro-control element 300, which is disposed between the transparent display panel 200 and the display panel 100. In some embodiments, each region of the electro-control element 300 can be controlled to be in a transmissive state or a scattering state. For example, in some embodiments, the electro-control element 300 can be a polymer-dispersed liquid crystal (PDLC) panel. The polymer-dispersed liquid crystal panel may include two light-transmitting substrates (not shown), a polymer-dispersed liquid crystal layer (not shown) disposed between the two light-transmitting substrates, a patterned electrode layer (not shown) disposed between one of the light-transmitting substrates and the polymer-dispersed liquid crystal layer, and a common electrode layer (not shown) disposed between the other light-transmitting substrate and the polymer-dispersed liquid crystal layer. By controlling the voltage difference between the patterned electrode layer and the common electrode layer, each region of the electro-control element 300 can be controlled to be in a transmissive state or a scattering state. For example, the patterned electrode layer of the polymer-dispersed liquid crystal panel may include a plurality of control electrodes; if there is a voltage difference between a control electrode and the common electrode layer, the region where this control electrode is located can be in a transmissive state; if there is substantially no voltage difference between a control electrode and the common electrode layer, the region where this control electrode is located can be in a scattering state. However, the present invention is not limited thereto. In other embodiments, the electro-control element 300 can also be other types of elements, such as but not limited to: a liquid crystal panel in which ions are mixed in the liquid crystal layer, a cholesteric liquid crystal panel, etc.

[0093] Please refer to Figures 21A to 21C , Figure 22 , Figures 23A to 23C And Figure 24, within one frame time T of the display device 10D, the display panel 100 displays the first image M1, and the transparent display panel 200 displays the second image M2. The first image M1 and the second image M2 are matched to provide a real depth-of-field image. The frame time T includes a plurality of sub-frame times t1, t2, t3 that are sequentially performed. The electro-control element 300 displays a plurality of scattering images s1, s2, s3 at the plurality of sub-frame times t1, t2, t3 respectively, and the spatial distributions of the plurality of scattering images s1, s2, s3 in the electro-control element 300 are different from each other. Thereby, within the plurality of sub-frame times t1, t2, t3, the differences in the spatial frequencies of the first image M1 of the display panel 100 and the second image M2 of the transparent display panel 200 passing through the different scattering images s1, s2, s3 of the electro-control element 300 may not be fixed, so that moiré fringes are suppressed.

[0094] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention. However, these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present invention.

Claims

1. A display device, characterized in that: include: a display panel; as well as a transparent display panel disposed in front of the display panel, wherein the display panel is spaced a distance from the transparent display panel; In a frame time of the display device, the display panel displays a first image, and the transparent display panel displays a second image, and the first image and the second image are matched to provide an actual depth of field image; The frame time includes a plurality of sub-frame times in a time sequence, and the display panel displays a plurality of sub-images in the sub-frame times respectively. The sub-images are different from each other, and the sub-images can be superimposed as the first image in the frame time.

2. The display device according to claim 1, wherein: Each of the sub-frames has a black pattern, and the black patterns of the sub-frames are distributed differently in multiple spaces in the display panel.

3. The display device according to claim 2, wherein: The black pattern includes a plurality of black stripes spaced apart from each other.

4. The display device according to claim 2, wherein: The black pattern includes a plurality of black blocks, the black blocks are arranged into a plurality of black block rows, the plurality of black blocks in each black block row are arranged in a first direction, the black block rows are arranged in a second direction interlaced with the first direction, and the black blocks in each black block row are arranged alternately with the black blocks in the next black block row.

5. A display device, characterized in that: include: a display panel; as well as A transparent display panel is disposed in front of the display panel, wherein the display panel and the transparent display panel are separated by a distance, and the distance is adjustable; In a first frame time of the display device, the display panel displays a first picture, and the transparent display panel displays a second picture, the first picture and the second picture are matched to provide a first actual depth of field picture, wherein the first frame time includes a plurality of first sub-frame times in a time sequence, the display panel displays a plurality of first sub-frames in the first sub-frame times respectively, the first sub-frames are different from each other, and the first sub-frames can be superimposed as the first picture in the first frame time; In a second frame time of the display device, the display panel displays a third picture, and the transparent display panel displays a fourth picture, the third picture and the fourth picture are matched to provide a second actual depth of field picture, wherein the second frame time includes a plurality of second sub-frame times in a time sequence, the display panel displays a plurality of second sub-frames in the second sub-frame times respectively, the second sub-frames are different from each other, and the second sub-frames can be superimposed as the third picture in the second frame time; The second frame time is before the first frame time or after the first frame time, and a time length of the first frame time is substantially equal to a time length of the second frame time; During the first frame time, the distance between the display panel and the transparent display panel is a first distance; During the second frame time, the distance between the display panel and the transparent display panel is a second distance, and the second distance is smaller than the first distance; The number of the second sub-frames displayed by the display panel in the second frame time is greater than the number of the first sub-frames displayed by the display panel in the first frame time.

6. A display device, characterized in that: include: a display panel; a transparent display panel disposed in front of the display panel, wherein the display panel is spaced a distance from the transparent display panel; as well as An electric control element, disposed between the transparent display panel and the display panel; In a frame time of the display device, the display panel displays a first image, and the transparent display panel displays a second image, and the first image and the second image are matched to provide an actual depth of field image; The frame time includes a plurality of sub-frame times in a time sequence, the electronically controlled element displays a plurality of scattered images in the sub-frame times respectively, and the spatial distributions of the scattered images in the electronically controlled element are different from each other.

Images