A display unit, a display device and a manufacturing method

Abstract

An embodiment of the present invention provides a display unit, a display device and a manufacturing method. The display unit includes at least one pixel island, and each pixel island includes multiple rows of sub-pixels; in each pixel island, the sub-pixels in the same row have the same color, and the multiple rows of sub-pixels are periodically arranged according to a preset color arrangement period, and the adjacent two rows of sub-pixels within the same preset color arrangement period are arranged in a staggered manner, eliminating the moiré pattern generated by the non-light-emitting area between the sub-pixels, and increasing the viewpoints of 3D naked-eye display. By splicing multiple display units in an arc shape and making the centers of the viewing areas formed by each display unit coincide with each other, when realizing large-size and super-multi-viewpoint naked-eye 3D display, the requirements of 3D resolution, field of view and viewpoint density can be satisfied simultaneously, improving the stereoscopic viewing effect.

Description

Technical Field

[0001] The present invention relates to the field of 3D display technologies, and particularly to a display unit, a display device, and a preparation method thereof. Background Art

[0002] With the development of information technology, display technologies have also been continuously advancing. In daily life, people's requirements for visual experiences are getting higher and higher, pursuing pure colors, increasingly large screens, and ultra-high resolutions. 3D display is considered to be the technology pursued by the next-generation mainstream display because it can restore real three-dimensional scenes and bring people a shocking visual effect. Especially with the continuous increase in the size and resolution of 2D display panels, the 3D display effect will be greatly improved. In the future, the naked-eye 3D technology is expected to have extensive applications in industries such as industry, military, medical, teaching, and entertainment.

[0003] However, the current effects of traditional parallax 3D display technologies still cannot fully meet people's sensory needs, so their applications are extremely limited. Pursuing a natural, smooth-transition, large field of view, and high-resolution naked-eye 3D display effect has always been the goal of improving 3D display technologies. Especially for large-size naked-eye 3D displays, they have attracted much attention because they can bring more shocking three-dimensional effects and a sense of visual immersion. Especially in the field of advertising and media, naked-eye 3D displays can be widely used in crowded areas such as airports, high-speed railways, subways, and shopping malls. Using ultra-large-format advertising machines will be more able to attract the attention of passersby and achieve the effect of widespread publicity.

[0004] From a technical perspective, the relatively mature naked-eye 3D technologies adopted in current naked-eye 3D products on the market mainly include slit grating technology, cylindrical lens grating technology, and directional backlight technology, etc. Among them, the naked-eye 3D technology that uses cylindrical lens grating technology based on geometric optics to achieve a natural and smooth transition of a large number of viewing angles has become a research hotspot in the field of naked-eye 3D technology due to its high light utilization rate and simple principle.

[0005] However, currently, when implementing large-size and multi-viewpoint naked-eye 3D displays, there are serious restrictions among the 3D resolution, the field of view, and the viewpoint density, which affect the stereoscopic viewing effect. Summary of the Invention

[0006] Aiming at the problem that there are serious restrictions among the 3D resolution, the field of view, and the viewpoint density when implementing large-size and multi-viewpoint naked-eye 3D displays in the prior art, which affects the stereoscopic viewing effect, the embodiments of the present invention provide a display unit, a display device, and a preparation method thereof.

[0007] In a first aspect, an embodiment of the present invention provides a display unit, which includes at least one pixel island, and each pixel island includes multiple rows of sub-pixels; in each pixel island, the sub-pixels in the same row have the same color, and the multiple rows of sub-pixels are periodically arranged according to a preset color arrangement period, and the adjacent two rows of sub-pixels within the same preset color arrangement period are arranged in a staggered manner.

[0008] In some embodiments, in each pixel island, the adjacent two rows of sub-pixels within the same preset color arrangement period are arranged with a stagger of 1 / 3 of a sub-pixel.

[0009] In some embodiments, the display unit includes one of an LED display unit, an LCD display unit, a PDP display unit, a FED display unit, and an OLED display unit.

[0010] In a second aspect, an embodiment of the present invention provides a display device, which includes a plurality of display units as described in the first aspect, and the plurality of display units are arc-shaped and spliced.

[0011] In some embodiments, the centers of the viewing areas formed by the light passing through the plurality of display units coincide.

[0012] In some embodiments, the plurality of display units include:

[0013] A first display unit located at the central position of the arc-shaped splicing, and

[0014] At least two second display units arc-shaped spliced on both sides of the first display unit;

[0015] The arc-shaped splicing is to adjust the offsets of the centers of the display areas of the at least two second display units respectively when the plurality of display units are spliced on the same plane, so that the centers of the viewing areas formed by the light passing through each display unit coincide, thereby realizing the arc-shaped splicing of the plurality of display units.

[0016] In some embodiments, the offset of the center of the display area of the second display unit is determined according to the following calculation formula:

[0017] K = (R / L)*X;

[0018] where K is the offset, R is the radius of the target arc surface formed by the arc-shaped splicing of the plurality of display units, L is the distance from the center of the viewing area to the center of the display area of the second display unit before the offset adjustment, and X is the distance from the center of the display area of the second display unit before the offset adjustment to the center of the display area of the first display unit.

[0019] In some embodiments, a reflective sheet is provided at the splicing position between adjacent display units to mix the light emitted by adjacent display units.

[0020] In a third aspect, an embodiment of the present invention provides a method for manufacturing a display unit, including:

[0021] Providing a backplane;

[0022] Dividing the backplane into pixel islands to obtain at least one pixel island;

[0023] Performing sub-pixel division on the pixel islands so that multiple rows of sub-pixels are formed in each pixel island; in each pixel island, sub-pixels in the same row have the same color, and the multiple rows of sub-pixels are periodically arranged according to a preset color arrangement period, and adjacent two rows of sub-pixels within the same preset color arrangement period are arranged with a dislocation;

[0024] Performing display unit division to form at least one display unit including pixel islands.

[0025] In a fourth aspect, an embodiment of the present invention provides a method for manufacturing a display device, including:

[0026] Providing a plurality of display units as described in the first aspect, or providing a plurality of display units obtained by the method for manufacturing a display unit as described in the third aspect;

[0027] Splicing the plurality of display units on the same plane, the plurality of display units including a first display unit located at the center position of the splicing and at least two second display units spliced on both sides of the first display unit;

[0028] Adjusting the center of the display area of each of the at least two second display units by an offset amount so that the centers of the viewing areas formed by the light passing through each display unit coincide, thereby realizing the arc-shaped splicing of the plurality of display units.

[0029] In some embodiments, the adjusting the center of the display area of each of the at least two second display units by an offset amount includes:

[0030] Determining the offset amount of each second display unit according to the following calculation formula:

[0031] K = (R / L)*X;

[0032] where K is the offset amount, R is the radius of the target arc surface formed by the arc-shaped splicing of the plurality of display units, L is the distance from the center of the viewing area to the center of the display area of the second display unit before the offset amount adjustment, and X is the distance from the center of the display area of the second display unit before the offset amount adjustment to the center of the display area of the first display unit;

[0033] Adjusting the center of the display area of each second display unit by the offset amount so that the centers of the viewing areas formed by the light passing through each display unit coincide.

[0034] Compared with the prior art, one or more embodiments of the present invention have at least the following beneficial effects:

[0035] An embodiment of the present invention provides a display unit, a display device, and a preparation method. The display unit includes at least one pixel island, and each pixel island includes multiple rows of sub-pixels; in each pixel island, the sub-pixels in the same row have the same color, and the multiple rows of sub-pixels are periodically arranged according to a preset color arrangement period. The adjacent two rows of sub-pixels within the same preset color arrangement period are arranged in a staggered manner, eliminating the moiré pattern generated by the non-light-emitting area between the sub-pixels, and increasing the viewpoints of 3D naked-eye display. By arc-shaped splicing of multiple display units and making the centers of the viewing areas formed by each display unit coincide, when realizing large-size and super-many-viewpoint naked-eye 3D display, the requirements of 3D resolution, field of view, and viewpoint density can be simultaneously met, improving the stereoscopic viewing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0037] Figure 1 is the schematic diagram of the principle of traditional super-many-viewpoint naked-eye 3D display;

[0038] Figure 2a is the schematic diagram of the principle of the modulation of light beams by a lens array under different fields of view;

[0039] Figure 2b is Figure 2a the image spot RMS formed by light beams under different fields of view in

[0040] Figure 3 is the schematic diagram of the distribution of left and right eye light beams of a large-size display panel at a fixed viewing distance L;

[0041] Figure 4 is the schematic diagram of the internal structure of the arc-shaped spliced display device provided by the embodiment of the present invention;

[0042] Figure 5 is the top view of the structure of the arc-shaped spliced display device provided by the embodiment of the present invention;

[0043] Figure 6 is the schematic diagram of the preparation process of the display unit provided by the embodiment of the present invention;

[0044] Figure 7 is the schematic diagram of the structure of the display unit provided by the embodiment of the present invention. Detailed implementation manners

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0046] When realizing naked-eye 3D display with a large-size display panel currently, due to being limited by the PPI (pixels per inch) of the large-size display panel, there are restrictions among achieving high resolution, large viewing field, and high view-point density. While ensuring the clarity of the 3D image and a certain viewing area, it is often impossible to take into account the view-point density; while realizing a 3D with natural and smooth transition and no shear for dense view points, the viewing angle of the 3D is often limited.

[0047] Figure 1 The schematic diagram of a traditional super multi-viewpoint naked-eye 3D display is shown, as Figure 1 shown. Suppose the light emitted by a liquid crystal display (LCD) passes through a cylindrical lens grating and emits out, generating n best viewing positions within the viewing area range θ. For example, when n = 6, viewing points 1 (View1) to 6 (View6) are generated. The aperture of the cylindrical lens is D, and the pixel size is Px. Then the interval of a single viewing point (i.e., the view-point density) K = θ / n, where n = D / Px. When the PPI of the display panel is certain, if the 3D resolution remains unchanged, that is, the number of viewing points n remains unchanged, then increasing the viewing area range θ will cause the view-point density K of the naked-eye 3D display to decrease, resulting in the inability to achieve a natural and smooth transition and a shear-free naked-eye 3D display effect.

[0048] In related technologies, in order to realize a large viewing field of naked-eye 3D display, a lens array with dynamic refresh control (such as a liquid crystal lens array) can be used to realize refreshing and displaying different viewing point contents in the main lobe viewing area and the side lobe viewing area, so as to achieve a large viewing field under a super high view-point density. Since it is necessary to cooperate with refreshing the content of the display panel while the lens array is dynamically refreshed, this poses higher requirements for the refresh of the lens array and the display system. At the same time, a tracking system needs to be configured, and the naked-eye 3D display effect is often not ideal due to delay and response problems when multiple people are watching.

[0049] Whether using a fixed lens array or an adjustable lens array to achieve a multi-viewpoint autostereoscopic 3D display, due to the aberration of the beam splitting device (lens array), its ability to control the light beam is limited. Especially for the light beam in the case of a large field of view, under the influence of off-axis aberration, at a large field of view, the image spot formed by the light beam is relatively large, making it easy to generate crosstalk between viewpoints, thus affecting the actual 3D viewing range. Figure 2a Fig. shows a schematic diagram of the modulation principle of the lens array for light beams in different fields of view. Figure 2b Fig. shows Figure 2a the RMS (root mean square) size of the image spots formed by light beams in different fields of view in Figure 2b The dashed box in Figure 2a is the root mean square of the light spots formed by light beams in three fields of view on the image plane when the defocus amount is 0 μm in Figure 2a It can be seen that the RMS of the light spot corresponding to the central field of view on the image plane in

[0050] The realization of 3D display technology requires the aid of a two-dimensional plane display. Different plane displays have different performances and show different effects in a three-dimensional display system. In indoor application scenarios, common plane display devices include liquid crystal displays (LCDs), plasma display panels (PDPs), field emission displays (FEDs), and organic light-emitting diodes (OLEDs). However, limited by their brightness and visible range, these plane display devices are all difficult to implement an outdoor large-size three-dimensional stereoscopic display system. LED displays have advantages such as high brightness and convenient assembly, and are more suitable for outdoor large-scale displays. They are currently the most suitable plane display devices for large-size three-dimensional stereoscopic display systems.

[0051] For stereoscopic display, the continuous increase in the requirements for resolution and PPI has limited the application of existing LCDs and OLEDs to a certain extent. With the maturity of Mini LED technology, it has been applied to outdoor display products. Developing autostereoscopic 3D display technology based on Mini LED will have broad application prospects in future large-size displays.

[0052] However, when using the existing beam splitting devices to achieve a multi-viewpoint autostereoscopic 3D display, due to the influence of aberration, especially when viewing in a large size, the increase in viewpoint crosstalk caused by off-axis aberration will greatly affect the actual stereoscopic viewing range. As Figure 3As shown, the distribution of the left and right eye beams of a large-size display panel at a fixed viewing distance L. Within the optimal 3D viewing area W, the left and right eye beams are well separated and the crosstalk is very low. Outside the optimal 3D viewing area W, the left and right eye beams overlap, resulting in a large crosstalk and affecting the stereoscopic viewing.

[0053] It can be seen that there are serious constraints among the 3D resolution, the field of view, and the viewpoint density when implementing large-size multi-viewpoint autostereoscopic 3D display currently.

[0054] Example 1

[0055] This embodiment provides a display unit, which includes one of an LED display unit, an LCD display unit, a PDP display unit, a FED display unit, and an OLED display unit. In this embodiment, the LED display unit is selected as the display unit. Preferably, the display unit is a Mini LED display unit.

[0056] The above display unit includes at least one pixel island, and each pixel island includes multiple rows of sub-pixels; in each pixel island, the sub-pixels in the same row have the same color, and the multiple rows of sub-pixels are periodically arranged according to a preset color arrangement period, and the adjacent two rows of sub-pixels within the same preset color arrangement period are arranged with a dislocation.

[0057] It should be noted that in each pixel island, the more sub-pixels are divided in each row, the more viewpoints are generated in the viewing area by the light splitting device after the light is emitted from the display unit, which is suitable for the application of large-size display devices, and thus can well realize multi-viewpoint autostereoscopic 3D display under an ultra-large field of view.

[0058] The above preset color arrangement period can be R (red) → G (green) → B (blue). That is to say, within a preset color arrangement period of the pixel island, it includes three rows of sub-pixels, namely one row of red sub-pixels, one row of green sub-pixels, and one row of blue sub-pixels. The three rows of sub-pixels within a preset color arrangement period are arranged with a dislocation row by row in the order of R → G → B. On the one hand, it realizes the compensation of the blank area (non-light-emitting area) between the sub-pixels in each row within a preset color arrangement period, and eliminates the moiré pattern generated by the non-light-emitting area between the sub-pixels. On the other hand, due to the adoption of the pixel island structure with multiple divided sub-pixels, the viewpoints of 3D autostereoscopic display are increased, and the visual effect of 3D autostereoscopic display is improved.

[0059] In practical applications, in each pixel island, adjacent two rows of sub-pixels within the same preset color arrangement cycle are arranged with a 1 / 3 sub-pixel offset. Taking a pixel island composed of one row of red sub-pixels, one row of green sub-pixels, and one row of blue sub-pixels as an example, the green sub-pixel row is offset by 1 / 3 sub-pixel as a whole compared to the red sub-pixel row, and the blue sub-pixel row is offset by 1 / 3 sub-pixel as a whole compared to the green sub-pixel row, so as to compensate for the non-emitting areas between sub-pixels in each row and eliminate the moiré pattern generated by the non-emitting areas between sub-pixels.

[0060] Multiple display units each including at least one pixel island, such as a Mini LED display unit with at least one pixel island, can be arc-shaped spliced into an integrated display device, such as an arc-shaped splicing screen. The structure of the arc-shaped spliced display device is as Figure 4 shown. The display device is arc-shaped spliced by three display units 1. Each display unit 1 includes 2 pixel islands. Each pixel island includes three rows of sub-pixels, namely the R row, the G row, and the B row. Taking Figure 4 the leftmost display unit 1 as an example, it includes 2 pixel islands 11. Each pixel island 11 includes the R row, the G row, and the B row. Each row is further divided into multiple sub-pixels. Multiple sub-pixels in the same row have the same color. Within one color arrangement cycle (RGB) of the three rows of sub-pixels (the R row, the G row, and the B row), adjacent two rows of sub-pixels are arranged with an offset (for example, offset by 1 / 3 sub-pixel), so as to eliminate the moiré pattern generated by the non-emitting areas between sub-pixels.

[0061] In this embodiment, in a display unit including at least one pixel island, each pixel island is divided into several sub-pixels. Each pixel corresponds to a light-emitting lamp core (such as an LED lamp core). Sub-pixels in the same row have the same color and correspond to continuously emitting lamp cores of the same color. By arranging adjacent two rows of sub-pixels within the same preset color arrangement cycle (such as R→G→B) with an offset, the moiré pattern generated by the non-emitting areas between sub-pixels is eliminated, and the number of viewpoints for 3D naked-eye display is increased, improving the visual effect of 3D naked-eye display. Further, a reflective sheet is provided in the splicing area between adjacent pixel islands to mix the light emitted from adjacent pixel islands.

[0062] Example 2

[0063] This embodiment provides a display device, including multiple display units, which are arc-shaped spliced. In practical applications, the display device can be, but is not limited to, an arc-shaped display screen. Taking the arc-shaped splicing of three display units as an example, as Figure 5As shown in the figure, the display device includes three display units 1. On the light-emitting side of each display unit, there is an array of light-splitting devices. The array of light-splitting devices contains multiple light-splitting devices 2. In practical applications, the light-splitting device can be a lens. Preferably, it can be a cylindrical lens, but it is not limited to a cylindrical lens. The splicing of the three display units 1 can achieve a large-field-of-view naked-eye 3D display.

[0064] It should be understood that the display device provided in this embodiment is not limited to including three display units. In practical applications, according to requirements, more than three display units can be arc-spliced to meet the needs of a larger field of view and a super-multi-viewpoint naked-eye 3D display.

[0065] Taking the display unit as a Mini LED display unit (Mini LED display screen), the display device in this embodiment includes multiple Mini LED display units arc-spliced together.

[0066] In order to improve the 3D viewing effect, the centers of the viewing areas formed by the light passing through multiple display units coincide. That is to say, when performing arc-splicing, the central axes of each display unit tend to a common center of the circle.

[0067] Among the above-mentioned multiple arc-spliced display units, it includes:

[0068] A first display unit located at the central position of the arc-splicing, and

[0069] At least two second display units arc-spliced on both sides of the first display unit.

[0070] The arc-splicing herein refers to the case where multiple display units are spliced on the same plane. The centers of the display areas of at least two second display units are respectively adjusted by an offset amount so that the centers of the viewing areas formed by the light passing through each display unit coincide, realizing the arc-splicing of multiple display units and the splicing of multiple display units on the target arc surface. In this way, the integrity of the 3D image display after arc-splicing is effectively ensured.

[0071] There are at least two second display units. When there are two second display units, they can be respectively arc-spliced on the left and right sides of the first display unit, thus realizing the arc-splicing centered on the first display unit.

[0072] In some cases, the offset amount of the center of the display area of the second display unit is determined according to the following calculation formula:

[0073] K = (R / L) * X;

[0074] Wherein, K is the offset, R is the radius of the target arc surface formed by the arc-shaped splicing of multiple display units, L is the distance from the center of the viewing area to the center of the display area of the second display unit before the offset adjustment, and X is the distance from the center of the display area of the second display unit to the center of the display area of the first display unit before the offset adjustment (when multiple display units are spliced on the same plane).

[0075] It should be noted that the offset K here refers to the offset in the horizontal direction of the center of the display area of the second display unit before and after the offset adjustment. It can be understood that by determining the offset in this horizontal direction and combining the radius of the target arc surface to be spliced, each second display unit can be adjusted to be arc-shaped spliced with the first display unit, and the center 3 of the viewing area formed by the first display unit and the second display unit coincides.

[0076] Take Figure 5 as an example. In the initial state of arc-shaped splicing, the display unit 1 on the left (the second display unit) and the display unit 1 on the right are spliced with the display unit 1 at the splicing center position (the first display unit) on the same plane. That is to say, for the second display unit on the left, the center A1 of its display area before adjusting the offset, the center B of the display area of the first display unit, and other second display units are all on the same horizontal line. When performing arc-shaped splicing, the center of the display area of the second display unit on the left needs to be adjusted from A1 to A2. Therefore, to make the center of the viewing area formed by the light passing through each display unit coincide and achieve the best splicing effect, the horizontal adjustment amount from A1 to A2, that is, the offset K, can be determined based on the radius R of the target arc surface to be spliced by each display unit. Since the target arc surface and its radius can be determined according to actual needs, and the distance L from the center 3 of the viewing area before the offset adjustment (which is also the center of the circle in Figure 4 ) to the center A1 of the display area of the second display unit before the offset adjustment, and the distance X from the center of the display area of the second display unit before the offset adjustment to the center of the display area of the first display unit are easily calculated or measured. Therefore, according to the foregoing calculation formula, the offset K of the second display unit on the left can be calculated. Based on this offset K and the radius R of the target arc surface to be spliced, the second display unit can be adjusted to the target position. Figure 5 The calculation of the offset of the second display unit on the right in

[0077] is similar, and will not be elaborated in this embodiment. Figure 5 It should be understood that only the arc-shaped splicing of three display units 1 is taken as an example. In practical applications, more than three display units can be used for arc-shaped splicing, and the offset of each display unit can be calculated by the foregoing calculation formula to achieve optimal adjustment, so that the centers of the viewing areas formed by the light passing through each display unit coincide, effectively ensuring the integrity of the 3D image display after arc-shaped splicing.

[0078] In this embodiment, multiple display units each including pixel islands can achieve a super large number of viewpoints. By arcuately splicing multiple display units each including pixel islands, a large-field-of-view super multi-viewpoint naked-eye 3D display with a large size can be achieved on the basis of ensuring the requirements of 3D resolution, large field of view, and required viewpoint density.

[0079] Furthermore, in order to enable the light between adjacent display units to be mixed, thereby avoiding moiré patterns caused by the seam between two display units, in some embodiments, a reflective sheet is provided at the splicing position between adjacent display units to mix the light emitted by adjacent display units. It should be understood that the reflective sheet can be made of a metal material with a high reflectivity. For example, the metal material Al is vapor-deposited at the splicing position between two display units on the splicing frame of the arcuately spliced display device, or a film material with a high reflectivity is attached to the splicing position between two display units on the splicing frame of the display device.

[0080] It should be understood that, as Figure 4 shown, in a pixel island 11, adjacent two rows of sub-pixels 11-1 within the same preset color arrangement period are arranged with a 1 / 3 sub-pixel offset. For the pixel islands 11 at the splicing position between adjacent display units, the same-color sub-pixel rows correspond to each other. Therefore, in one or more pixel islands at the splicing position, a reflective sheet 4 is provided at the splicing position between adjacent same-color sub-pixel rows. That is to say, providing a reflective sheet 4 at the splicing position between adjacent display units may include: providing a reflective sheet 4 at the splicing position between adjacent same-color sub-pixel rows in the pixel islands at the splicing position between adjacent display units. For example, Figure 4 at the splicing position between the second display unit on the left and the first display unit located at the splicing center, the pixel islands in the second display unit on the left are adjacent to those in the first display unit. In the two adjacent pixel islands, the first row is the R row, the second row is the G row, and the third row is the B row. A reflective sheet 4 is provided at the splicing position between the R row (red sub-pixel row) in the pixel island of the second display unit on the left and the R row in the pixel island of the adjacent first display unit. Similarly, a reflective sheet 4 is provided at the splicing position between the G row (green sub-pixel row) in the pixel island of the second display unit on the left and the G row in the pixel island of the adjacent first display unit. A reflective sheet is provided at the splicing position between the B row (blue sub-pixel row) in the pixel island of the second display unit on the left and the B row in the pixel island of the adjacent first display unit, so as to achieve light mixing and avoid moiré patterns caused by the seam. In particular, by providing a reflective sheet between adjacent same-color sub-pixel rows, the light mixing can be made more uniform and the generation of moiré patterns can be avoided.

[0081] Example 3

[0082] This embodiment provides a method for manufacturing a display unit, which can manufacture the display unit of Embodiment 1. The manufacturing process is as follows Figure 6 as shown, and the method includes:

[0083] First, provide a backplane, which is used to manufacture the display unit in Embodiment 1, such as a Mini LED display unit including at least one pixel island.

[0084] In practical applications, the backplane can be manufactured by sequentially depositing films such as a substrate (GaN-BUFFER), an N-type gallium nitride (n-GaN), an active layer (MQW), and a P-type gallium nitride (p-GaN) on a sapphire glass substrate (Sapphire).

[0085] Second, perform pixel island segmentation on the backplane to obtain at least one pixel island.

[0086] According to actual requirements, determine the size of the pixel island. Since the backplane involves multiple film layers, in practical applications, the backplane is segmented by deep etching according to the established pixel island size to obtain one or more pixel islands. On the basis of pixel island segmentation, a P electrode layer (P-electrode) is prepared above the P-type gallium nitride (p-GaN).

[0087] Third, perform sub-pixel segmentation on the pixel island so that multiple rows of sub-pixels are formed in each pixel island; in each pixel island, the sub-pixels in the same row have the same color, and the multiple rows of sub-pixels are periodically arranged according to a preset color arrangement period, and the adjacent two rows of sub-pixels within the same preset color arrangement period are arranged in a staggered manner.

[0088] In practical applications, sub-pixel segmentation is performed on each pixel island through a mask plate exposure + etching process. The specific number of sub-pixels to be segmented can be determined according to actual requirements, and this embodiment does not make any limitations.

[0089] After sub-pixel segmentation, perform N mesa etching and N electrode preparation, then prepare a passivation layer, and perform N electrode opening. Further, prepare an electrode Pad, and thin the sapphire glass substrate to reduce the thickness of the overall display unit for easy packaging.

[0090] Finally, perform display unit segmentation to form at least one display unit including pixel islands.

[0091] The above manufacturing process can manufacture Figure 7 the display unit as shown, Figure 7 in which some sub-pixels are locally enlarged to show the staggered arrangement between the sub-pixels. It should be noted that the drawings in this embodiment are only examples and do not limit the protection scope of the present invention.

[0092] In practical applications, after the foregoing steps, the display units are divided by laser scribing to obtain a plurality of display units, and each display unit includes at least one pixel island. The obtained at least one display unit can be used for arc splicing into a large-size display device, especially a large-size autostereoscopic 3D display device, and the display device formed by arc splicing can achieve a large viewing field and multiple viewpoints.

[0093] Through the preparation method of this embodiment, several Mini LED display units including at least one pixel island can be prepared for arc splicing. Each Mini LED display unit can achieve multiple viewpoints. The arc splicing into a spliced display device can simultaneously meet the requirements of a large-size display device and a large number of viewpoints under a large viewing field, and significantly improve the autostereoscopic 3D display effect. The requirements for 3D resolution, viewing field, and viewpoint density can be simultaneously met without mutual constraints.

[0094] Example 4

[0095] This embodiment provides a method for preparing a display device. In practical applications, the display device can be, but is not limited to, an arc-shaped display screen. The method includes:

[0096] First, provide a plurality of display units.

[0097] In practical applications, the plurality of display units can be the display units in Embodiment 1 or the display units prepared by the preparation method provided in Embodiment 3. The display unit can be one of an LED display unit, an LCD display unit, a PDP display unit, a FED display unit, and an OLED display unit. In this embodiment, the display unit is an LED display unit. Preferably, the display unit is a Mini LED display unit including at least one pixel island.

[0098] Second, splice the plurality of display units on the same plane. The plurality of display units include a first display unit located at the center position of the splicing and at least two second display units spliced on both sides of the first display unit.

[0099] In practical applications, when preparing an arc-shaped display screen, first splice the plurality of display units on the same plane, and then through offset adjustment, adjust the display units on both sides of the display unit at the center position to the state of arc splicing with the display unit at the center position, thereby completing the arc splicing.

[0100] Finally, the centers of the display areas of at least two second display units are respectively adjusted for offset so that the centers of the viewing areas formed by the light passing through each display unit coincide, realizing the arc splicing of the plurality of display units and splicing the plurality of display units on the target arc surface.

[0101] In some embodiments, the centers of the display areas of at least two second display units are respectively adjusted for the offset amount, including:

[0102] First, determine the offset amount of each second display unit according to the following calculation formula:

[0103] K = (R / L)*X;

[0104] Wherein, K is the offset amount, R is the radius of the target arc surface formed by the arc-shaped splicing of the multiple display units, L is the distance from the center of the viewing area to the center of the display area of the second display unit before the offset amount adjustment, and X is the distance from the center of the display area of the second display unit before the offset amount adjustment to the center of the display area of the first display unit.

[0105] Then, adjust the center of the display area of each second display unit by the offset amount so that the centers of the viewing areas formed by the light passing through each display unit coincide.

[0106] In this embodiment, when multiple display units are spliced on the same plane, the centers of the display areas of at least two second display units are respectively adjusted for the offset amount so that the centers of the viewing areas formed by the light passing through each display unit coincide, realizing the splicing of multiple display units on the target arc surface. In this way, the integrity of the 3D image display after the arc-shaped splicing is effectively ensured, and at the same time, a display device with a large viewing field and large size is provided, effectively improving the naked-eye 3D display effect, and the best viewing effect can be achieved in each viewing field.

[0107] In several embodiments provided by the embodiments of the present invention, it should be understood that the disclosed systems and methods can also be implemented in other ways. The system and method embodiments described above are only illustrative.

[0108] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0109] Although the disclosed embodiments of the present invention are as above, the described content is only an embodiment adopted for the convenience of understanding the present invention and is not used to limit the present invention. Any person skilled in the art within the technical field to which the present invention pertains can make any modifications and changes in the form of implementation and details without departing from the spirit and scope disclosed by the present invention. However, the scope of patent protection of the present invention shall still be subject to the scope defined by the appended claims.

Claims

1. A multi-viewpoint autostereoscopic 3D display device, characterized in that, It includes multiple display units, and the multiple display units are spliced in an arc shape; each display unit includes at least one pixel island, and each pixel island includes multiple rows of sub-pixels; in each pixel island, the sub-pixels in the same row have the same color, the multiple rows of sub-pixels are periodically arranged according to a preset color arrangement period, and the adjacent two rows of sub-pixels within the same preset color arrangement period are arranged in a staggered manner; The multiple display units include: A first display unit located at the central position of the arc-shaped splicing, and At least two second display units arc-spliced on both sides of the first display unit; The arc-shaped splicing is to adjust the offsets of the centers of the display areas of the at least two second display units respectively when the multiple display units are spliced on the same plane, so that the centers of the viewing areas formed by the light passing through each display unit coincide, realizing the arc-shaped splicing of the multiple display units; The offset of the center of the display area of the second display unit is determined according to the following calculation formula: K = (R / L)*X; Wherein, K is the offset of the center of the display area of the second display unit in the horizontal direction before and after the offset adjustment, R is the radius of the target arc surface formed by the arc-shaped splicing of the multiple display units, L is the distance from the center of the viewing area to the center of the display area of the second display unit before the offset adjustment, and X is the distance from the center of the display area of the second display unit before the offset adjustment to the center of the display area of the first display unit.

2. The multi-viewpoint autostereoscopic 3D display device according to claim 1, wherein In each pixel island, the adjacent two rows of sub-pixels within the same preset color arrangement period are arranged with a stagger of 1 / 3 of a sub-pixel.

3. The multi-viewpoint autostereoscopic 3D display device according to claim 1, characterized in that, The display unit includes one of an LED display unit, an LCD display unit, a PDP display unit, a FED display unit, and an OLED display unit.

4. The multi-viewpoint autostereoscopic 3D display device according to claim 1, characterized in that, A reflective sheet is provided at the splicing position between adjacent display units to mix the light emitted by adjacent display units.

5. A preparation method of a multi-viewpoint naked-eye 3D display device, characterized in that, It includes: Providing the multi-viewpoint autostereoscopic 3D display device according to any one of claims 1 to 4, or providing multiple display units obtained according to the manufacturing method of the display unit; Splicing the multiple display units on the same plane, the multiple display units including a first display unit located at the central position of the splicing, and at least two second display units spliced on both sides of the first display unit; Respectively adjusting the offsets of the centers of the display areas of the at least two second display units so that the centers of the viewing areas formed by the light passing through each display unit coincide, realizing the arc-shaped splicing of the multiple display units; The manufacturing method of the display unit includes: Providing a backplane; Dividing the backplane into pixel islands to obtain at least one pixel island; Performing sub-pixel division on the pixel island so that multiple rows of sub-pixels are formed in each pixel island; in each pixel island, the sub-pixels in the same row have the same color, the multiple rows of sub-pixels are periodically arranged according to a preset color arrangement period, and the adjacent two rows of sub-pixels within the same preset color arrangement period are arranged in a staggered manner; Performing display unit division to form at least one display unit including pixel islands; The respectively adjusting the offsets of the centers of the display areas of the at least two second display units includes: Determine the offset of each second display unit according to the following calculation formula: K = (R / L) * X; where K is the offset of the center of the display area of the second display unit in the horizontal direction before and after offset adjustment, R is the radius of the target arc surface formed by the arc-shaped splicing of the multiple display units, L is the distance from the center of the viewing area to the center of the display area of the second display unit before offset adjustment, and X is the distance from the center of the display area of the second display unit before offset adjustment to the center of the display area of the first display unit; Adjust the center of the display area of each second display unit by the offset amount so that the centers of the viewing areas formed by the light passing through each display unit coincide.

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