Light modulation panel, projection device, and projection display system

Abstract

The present disclosure provides a light modulation panel, a projection device, and a projection display system. The light modulation panel comprises a light modulation region, and a plurality of sub-pixel units arranged in a first direction and a second direction which intersect each other are provided in the light modulation region; the light modulation region comprises a first pixel region and a second pixel region adjacent to each other, and the second pixel region is located in the outer region of the light modulation region relative to the first pixel region; along the first direction, there is a first spacing between edges of two adjacent sub-pixel units in the first pixel region, there is a second spacing between edges of two adjacent sub-pixel units in the second pixel region, and the second spacing is greater than the first spacing. The problem of blurry edges in a projected image can be mitigated.

Description

Light modulation panels, projection devices and projection display systems Technical Field

[0001] This disclosure relates to the field of display technology, and more particularly to a light modulation panel, a projection device, and a projection display system. Background Technology

[0002] Currently developed projection products mainly include Digital Light Processing (DLP) projection products and Liquid Crystal Display (LCD) projection products. Due to limitations in optical path design and optical component characteristics, LCD projection products typically exhibit higher resolution in the center of the image and lower resolution at the edges, resulting in blurred edges and negatively impacting the viewing experience.

[0003] Summary of the Invention

[0004] A first aspect of this disclosure provides a light modulation panel for a projection device. The light modulation panel includes a light modulation area, and a plurality of sub-pixel units arranged along mutually intersecting first and second directions are disposed in the light modulation area.

[0005] The light modulation region includes an adjacent first pixel region and a second pixel region, with the second pixel region located outside the light modulation region relative to the first pixel region; along a first direction, there is a first spacing between the edges of two adjacent sub-pixel units in the first pixel region, and there is a second spacing between the edges of two adjacent sub-pixel units in the second pixel region, with the second spacing being greater than the first spacing.

[0006] In some embodiments, the second spacing is less than or equal to twice the first spacing.

[0007] In some embodiments, the second pixel region includes a first sub-pixel region and a second sub-pixel region. Along a first direction, the first sub-pixel region and the second sub-pixel region are located on opposite sides of the first pixel region, and along a second direction, the width of the first sub-pixel region and the width of the second sub-pixel region are the same as the width of the first pixel region.

[0008] In some embodiments, along the first direction, the spacing between the edges of any two adjacent sub-pixel units in the first sub-pixel region is equal, and the spacing between the edges of any two adjacent sub-pixel units in the second sub-pixel region is equal.

[0009] In some embodiments, along a first direction and along a direction away from the first pixel region, the spacing between the edges of two adjacent sub-pixel units in the first sub-pixel region gradually increases, and the spacing between the edges of two adjacent sub-pixel units in the second sub-pixel region gradually increases.

[0010] In some embodiments, along the first direction, any two sub-pixel units in the first sub-pixel region have the same width, and any two sub-pixel units in the second sub-pixel region have the same width.

[0011] Along the first direction, and along the direction away from the first pixel area, the spacing between the centers of two adjacent sub-pixel units in the first sub-pixel area gradually increases, and the spacing between the centers of two adjacent sub-pixel units in the second sub-pixel area gradually increases.

[0012] In some embodiments, along a first direction and along a direction away from the first pixel region, the width of the sub-pixel unit within the first sub-pixel region gradually decreases;

[0013] Along the first direction, and along the direction from the inside to the outside of the light modulation area, the width of the sub-pixel unit in the second sub-pixel area gradually decreases.

[0014] In some embodiments, along the first direction, the width of the first sub-pixel region is greater than or equal to 1 / 8 of the width of the light modulation region, and less than or equal to 1 / 4 of the width of the light modulation region;

[0015] Along the first direction, the width of the second sub-pixel region is greater than or equal to 1 / 8 of the width of the light modulation region, and less than or equal to 1 / 4 of the width of the light modulation region.

[0016] In some embodiments, the second pixel region further includes a third sub-pixel region and a fourth sub-pixel region. Along the second direction, the third sub-pixel region and the fourth sub-pixel region are located on opposite sides of the first pixel region, and along the first direction, the width of the third sub-pixel region and the width of the fourth sub-pixel region are equal to the total width of the first pixel region, the first sub-pixel region and the second sub-pixel region, respectively.

[0017] In some embodiments, the shape of the optical modulation region is rectangular, and the two adjacent sides of the rectangle are parallel to the first direction and the second direction, respectively;

[0018] The second pixel area includes multiple sub-pixel areas, which are arranged one-to-one in the right-angled region of the light modulation area, and two adjacent sub-pixel areas are separated by the first pixel area.

[0019] In some embodiments, along the first direction, the width of the sub-pixel unit in the sub-pixel region is smaller than the width of the sub-pixel unit in the first pixel region, and the spacing between the edges of any two adjacent sub-pixel units in the sub-pixel region is equal.

[0020] In some embodiments, along the first direction, the width of the sub-pixel unit in the sub-pixel region is smaller than the width of the sub-pixel unit in the first pixel region, and along the direction away from the first pixel region, the spacing between the edges of adjacent sub-pixel units in the sub-pixel region gradually increases.

[0021] In some embodiments, along the first direction, the widths of any two sub-pixel units within the sub-pixel region are equal, and along the direction away from the first pixel region, the distance between the centers of two adjacent sub-pixel units gradually increases.

[0022] In some embodiments, the width of the sub-pixel unit within the sub-pixel region gradually decreases along a first direction and along a direction away from the first pixel region.

[0023] In some embodiments, within a subpixel region, each row or column contains an equal number of subpixel units.

[0024] In some embodiments, the number of sub-pixel units contained in each row of sub-pixel units arranged along the second direction in the sub-pixel region tends to increase along the direction away from the first pixel region.

[0025] In some embodiments, along the first direction, the width of a single sub-pixel region is greater than or equal to 1 / 8 of the width of the light modulation region and less than or equal to 1 / 4 of the width of the light modulation region;

[0026] Along the second direction, the width of a single sub-pixel region is greater than or equal to 1 / 8 of the width of the light modulation region, and less than or equal to 1 / 4 of the width of the light modulation region.

[0027] In some embodiments, the width of the optical modulation region along the first direction is greater than the width along the second direction.

[0028] In some embodiments, the light modulation region includes a plurality of pixel units, each pixel unit including a plurality of sub-pixel units arranged along a first direction.

[0029] A second aspect of this disclosure is to provide a projection device including the light modulation panel of any one of the above claims;

[0030] The projection device also includes a light source assembly and a projection assembly; the light modulation panel is located on the light-emitting side of the light source assembly, and the projection assembly is located on the light-emitting side of the light modulation panel.

[0031] A third aspect of this disclosure provides a projection display system, including the projection device of any of the foregoing claims. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments of this disclosure will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 is a schematic diagram of the structure of a projection device in the related technology;

[0034] Figure 2 is one of the pixel structure schematic diagrams of the light modulation panel provided in the embodiments of this disclosure;

[0035] Figure 3A is a schematic diagram of the edge pixel structure and edge projection effect of the light modulation panel as a comparison.

[0036] Figure 3B is a schematic diagram of the edge pixel structure and edge projection effect of the light modulation panel provided in the embodiment of this disclosure;

[0037] Figure 4 is a second schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure;

[0038] Figure 5 is a third schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure;

[0039] Figure 6 is a fourth schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure;

[0040] Figure 7 is the fifth schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure;

[0041] Figure 8 is a sixth schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure;

[0042] Figure 9 is the seventh schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure;

[0043] Figure 10 is the eighth schematic diagram of the pixel structure of the light modulation panel provided in the embodiment of this disclosure;

[0044] Figure 11A is a ninth schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure;

[0045] Figure 11B is a tenth schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure;

[0046] Figure 12 is an eleventh schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure;

[0047] Figure 13 is a schematic diagram of the light combining structure of the light modulation panel provided in the embodiment of this disclosure;

[0048] Figure 14 is a schematic diagram of the pixel structure of the light modulation panel provided in the embodiment of this disclosure;

[0049] Figure 15A is a schematic diagram of the pixel structure of the light modulation panel provided in the embodiment of this disclosure, number thirteen.

[0050] Figure 15B is a schematic diagram of a driving method for a projection device provided in an embodiment of this disclosure;

[0051] Figure 16 is a schematic diagram of the structure of the projection device provided in an embodiment of this disclosure;

[0052] Figure 17 is a schematic diagram of the structure of the mask provided in the embodiment of this disclosure. Detailed Implementation

[0053] To make the above-described objects, features, and advantages of this disclosure more apparent and understandable, the disclosure will be further described below in conjunction with the accompanying drawings and embodiments. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the disclosure more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the figures denote the same or similar structures, and therefore repeated descriptions of them will be omitted. Terms describing position and direction as described in this disclosure are illustrative of the accompanying drawings, but changes may be made as needed, and all such changes are included within the scope of protection of this disclosure. The accompanying drawings of this disclosure are for illustrative purposes only and do not represent actual scale.

[0054] Figure 1 is a schematic diagram of the structure of a projection device in the related technology.

[0055] Currently developed projection products mainly include Digital Light Processing (DLP) projection products and Liquid Crystal Display (LCD) projection products. LCD projection products include single-LCD projection products and 3LCD projection products. The main difference between single-LCD and 3LCD projection products is that single-LCD projection products use a single LCD panel as the light modulation device to achieve image display and projection, while 3LCD projection products use three LCD panels as light modulation devices, combining the images displayed on the three LCD panels into a single display image for projection.

[0056] For example, Figure 1 shows the structure of a single LCD projection device. The projection device includes a light source assembly 1, a liquid crystal display panel 21, and a projection assembly 3. The light source assembly 1 includes a light source 11 and a first Fresnel lens 12. The first Fresnel lens 12 can converge the light emitted from the light source 11 to improve the brightness of the light. The liquid crystal display panel 21 is located on the light-emitting side of the light source assembly 1. The light emitted from the light source assembly 1 is modulated by the liquid crystal display panel 21 and emitted from the side of the liquid crystal display panel 21 away from the light source assembly. The projection assembly 3 is located on the light-emitting side of the liquid crystal display panel 21 and is used to project the light modulated by the liquid crystal display panel 21 onto a carrier such as a projection screen to display the projected image, thereby realizing projection display. The projection assembly 3 may include optical elements such as a second Fresnel lens 31, a reflector 32, and a projection lens 33. The second Fresnel lens 31 is used to converge the light, the reflector 32 is used to adjust the light path, and the projection lens 33 is used to project the projected image onto the carrier displaying the image.

[0057] Due to limitations in optical path design and optical component characteristics, LCD projection products, such as the stray light or ghosting caused by light passing through the secondary tooth surface and the rounded corners between the teeth of a Fresnel lens, typically exhibit higher resolution in the center area of ​​the image and lower resolution in the edge area, resulting in blurred edges of the projected image and affecting the viewing experience.

[0058] In view of this, the present disclosure provides an optical modulation panel to solve the above problems.

[0059] Figure 2 is one of the pixel structure diagrams of the light modulation panel provided in the embodiments of this disclosure.

[0060] As shown in Figure 2, the light modulation panel 2 includes a light modulation area P and a wiring area R surrounding the light modulation area P. Multiple sub-pixel units PX are arranged in the light modulation area P along intersecting first and second directions y. Signal lines are arranged in the wiring area R surrounding the light modulation area P. These signal lines drive the sub-pixel units PX to modulate the incident light, thereby achieving image display. For example, if the light modulation panel 2 is an LCD panel, the signal lines can drive the liquid crystal molecules in the light modulation area P to rotate, thus modulating the light. The first direction x and the second direction y can be perpendicular to each other, and the multiple sub-pixel units PX can be arranged in an array; this is not a limitation.

[0061] In this embodiment of the present disclosure, as shown in FIG2, the light modulation area P includes an adjacent first pixel area P1 and a second pixel area P2, wherein the second pixel area P2 is located in the outer region of the light modulation area P relative to the first pixel area P1. It is understood that when the second pixel area P2 is located in the outer region of the light modulation area P relative to the first pixel area P1, it means that in the direction from the first pixel area P1 to the second pixel area P2, the first pixel area P1 and the trace area R are not directly adjacent, but are separated by the second pixel area P2, and the second pixel area P2 is closer to the edge of the light modulation area P than the first pixel area P1.

[0062] Along the first direction x, there is a first spacing D1 between the edges of two adjacent sub-pixel units PX in the first pixel region P1, and a second spacing D2 between the edges of two adjacent sub-pixel units PX in the second pixel region P2, wherein the second spacing D2 is greater than the first spacing D1. Therefore, in the second pixel region P2 located at the edge of the light modulation region P, there is a larger spacing between the edges of two adjacent sub-pixel units PX along the first direction X, which can improve the problem of blurred projected images corresponding to the second pixel region P2 caused by poor edge resolution of the projection device.

[0063] Figure 3A is a schematic diagram of the edge pixel structure and edge projection effect of the light modulation panel as a comparison; Figure 3B is a schematic diagram of the edge pixel structure and edge projection effect of the light modulation panel provided in the embodiment of this disclosure.

[0064] Specifically, in the contrasting light modulation panel, as shown in Figure 3A, along the first direction x, the spacing between the edges of two adjacent sub-pixel units PX in the second pixel region P2 of the light modulation panel is usually set to be the same as that in the first pixel region P1. That is, the spacing between the edges of two adjacent sub-pixel units PX in the second pixel region P2 of the light modulation panel also has a first spacing D1. If the edge resolution of the projection device is not lost, the spacing between the edges of two adjacent sub-pixel units in the projected image corresponding to the second pixel region P2 should theoretically be the first theoretical d1, and the projection device can clearly display the projected image corresponding to the second pixel region P2. However, in reality, due to the reduced edge resolution of the projection device and the excessively small spacing between the edges of two adjacent sub-pixel units PX in the pixel structure of the light modulation panel, crosstalk occurs between adjacent sub-pixel units in the region corresponding to the second pixel region P2 in the actual projected image. The projected images of adjacent sub-pixel units overlap, resulting in an unclear projected image in the region corresponding to the second pixel region P2, i.e., the edge region of the projected image of the projection device is unclear.

[0065] Compared to the light modulation panel shown in Figure 3A, the light modulation panel provided in this embodiment increases the spacing between sub-pixel units PX at the edge of the light modulation area. As shown in Figure 3B, along the first direction x, within the second pixel area P2 of the light modulation panel, the spacing between the edges of two adjacent sub-pixel units PX is set to a second spacing D2, which is greater than the first spacing D1. Under the condition that the edge resolution of the projection device is not lost, the spacing between the edges of two adjacent sub-pixel units in the projected image corresponding to the second pixel area P2 should theoretically be the second theoretical spacing d2. In the projected image corresponding to the second pixel area P2, no crosstalk occurs between two adjacent sub-pixel units PX. Due to the reduced edge resolution of the projection device, in the actual projected image, within the area corresponding to the second pixel area P2, the spacing between the edges of two adjacent sub-pixel units PX is the actual projection spacing d21. The actual projection spacing d21 is less than the second theoretical spacing d2. However, since the actual projection spacing d21 exists between sub-pixel units PX within the area corresponding to the second pixel area P2 in the actual projected image, crosstalk between sub-pixel units PX can be avoided, improving the clarity of the edge area of ​​the projected image. Furthermore, the actual projection spacing d21 is smaller than the second theoretical spacing d2. The actual projection spacing d21 is closer to the first spacing D1 than the second theoretical spacing d2. This makes the display effect of the projected image of the second pixel area P2 closer to the display effect of the projected image of the first pixel area P1. In other words, it makes the display effect of the edge area and the center area of ​​the projected image closer, thus improving the user's viewing experience.

[0066] In some embodiments, the second spacing D2 can be set to be less than or equal to twice the first spacing D1. Specifically, the second spacing D2 should not be set too large, as an excessively large second spacing D2 will result in excessively large pixel spacing within the region corresponding to the second pixel area P2 in the projected image, thereby reducing the resolution of the edge region of the projected image. In specific implementations, the second spacing D2 can be set to 1.2 to 2 times the first spacing D1, for example, setting the second spacing D2 to 1.2 times the first spacing D1, without limitation. It should be noted that, in order to clearly show the spacing relationship between the edges of adjacent pixel units, the relationship between the spacing between the edges of adjacent pixel units and the width of a single pixel unit in the accompanying drawings of this disclosure is not drawn according to the actual situation. Referring to Figure 2, in practice, along the first direction x, the width W of a single pixel unit PX is typically greater than the distance between the edges of adjacent pixel units (first distance D1 and / or second distance D2). For example, for a Full High Definition (FHD) resolution light modulation panel, the width of a single pixel unit PX is generally between 13.5 μm and 12.9 μm. The distance between the edges of adjacent pixel units PX within the first pixel region P1 (i.e., the first distance D1) is generally around 2.5 μm. The distance between the edges of adjacent pixel units PX within the second pixel region P2 (i.e., the second distance D2) is greater than the first distance D1 but less than twice the first distance D1, meaning the second distance D2 is 2.5 μm. <D2≤5μm。

[0067] In some embodiments, the spacing between the edges of two adjacent sub-pixel units PX in the second pixel region P1 along the first direction x can be set to be greater than the spacing between the edges of two adjacent sub-pixel units PX in the first pixel region P1.

[0068] For example, as shown in Figure 2, the optical modulation region P can be configured to have a first width W1 along the first direction x and a second width W2 along the second direction y, where the first width D1 is greater than the second width D2. That is, the width of the optical modulation region P along the first direction x is greater than the width of the optical modulation region P along the first direction y. Specifically, the shape of the optical modulation region P can be rectangular, with two opposite long sides and two opposite short sides, adjacent and perpendicular to each other. The first direction x can be parallel to the direction of the long side of the rectangle, and the second direction y can be parallel to the direction of the short side of the rectangle. Alternatively, the shape of the optical modulation region P can be rhomboid, with one long diagonal and one short diagonal that are perpendicular to each other. The first direction x can be parallel to the direction of the long diagonal, and the second direction y can be parallel to the direction of the short diagonal. The optical modulation region P can also have other shapes, which are not limited here. It should be noted that the first width of the optical modulation region P along the first direction x and the second width along the second direction y refer to the maximum width of the optical modulation region P in the corresponding directions.

[0069] Because the width of the light modulation region P along the first direction x is relatively large, the attenuation of image resolution in the edge region of the light modulation region P is more significant along the first direction x. Therefore, setting the spacing between the edges of adjacent pixel units PX in the second region P2 to be greater than the spacing between the edges of adjacent pixel units PX in the first region P1 can significantly improve the problem of unclear edge images caused by weakened edge resolution. Furthermore, in pixel structure design, the spacing between the edges of two adjacent pixel units PX along the second direction y is usually designed to be greater than the spacing between the edges of two adjacent pixel units PX along the first direction x. That is to say, the larger spacing between the edges of two adjacent pixel units PX along the second direction y results in less crosstalk between adjacent pixel units PX. Therefore, along the second direction y, it is not necessary to differentiate the edge spacing of pixel units PX; instead, the spacing between the edges of any two adjacent pixel units PX can be set to be the same.

[0070] Figure 2 illustrates the case where the first width W1 is greater than the second width W2. That is, in the first direction x and the second direction y, the edge spacing of the pixel units in the first pixel region P1 and the second pixel region P2 can be differentiated only in the first direction x, where the light modulation region P has a larger width. In some embodiments, the edge spacing of the pixel units in the first pixel region P1 and the second pixel region P2 can also be differentiated only in the direction where the light modulation region P has a smaller width. For example, the first width W1 is smaller than the second width W2, and only the spacing between the edges of two adjacent sub-pixel units PX in the second pixel region P1 along the first direction x is set to be greater than the spacing between the edges of two adjacent sub-pixel units PX in the first pixel region P1; this is not limited here.

[0071] In some embodiments, the spacing between the edges of two adjacent sub-pixel units PX in the second pixel region P2 along the first direction x can be set to be greater than the spacing between the edges of two adjacent sub-pixel units PX in the first pixel region P1, and the spacing between the edges of two adjacent sub-pixel units PX in the second pixel region P2 along the second direction y can be set to be greater than the spacing between the edges of two adjacent sub-pixel units PX in the first pixel region P1. This can simultaneously improve the problem of unclear edge images due to low edge resolution in both the first direction x and the second direction y. This is not a limitation. This disclosure uses the example of setting the spacing between the edges of two adjacent sub-pixel units PX in the second pixel region P1 to be greater than the spacing between the edges of two adjacent sub-pixel units PX in the first pixel region P1 as an example. In specific implementations, when setting the spacing between the edges of two adjacent sub-pixel units PX in the second pixel region P2 to be greater than the spacing between the edges of two adjacent sub-pixel units PX in the first pixel region P1, the setting can be referred to the embodiments of this disclosure, and will not be elaborated here.

[0072] In some embodiments, as shown in FIG2, the second pixel region P2 includes a first sub-pixel region P21 and a second sub-pixel region P22. Along a first direction x, the first sub-pixel region P21 and the second sub-pixel region P22 are located on both sides of the first pixel region P1, and along a second direction y, the widths of the first sub-pixel region P21 and the second sub-pixel region P22 are the same as the width of the first pixel region P1. For example, along the second direction y, the widths of the first sub-pixel region P21, the second sub-pixel region P22, and the first pixel region P1 are the same as the width of the light modulation region P, all being a second width W2. Setting the second pixel region P2 (including the first sub-pixel region P21 and the second sub-pixel region P22) on both sides of a pixel region P1 along a direction x helps to improve the problem of unclear projected images in the edge areas located on both sides of the first pixel region P1.

[0073] In some embodiments, along the first direction x, the spacing between the edges of any two adjacent sub-pixel units PX in the first pixel region P1 is equal, and the spacing between any two adjacent sub-pixel units PX in the second pixel region P2 is also equal. This arrangement simplifies the pixel structure within the light modulation region P and facilitates control over the distance between sub-pixel units PX, thus reducing manufacturing difficulty. In specific implementations, various methods can be used to ensure that the spacing between the edges of adjacent sub-pixel units PX in the second pixel region P2 is greater than the spacing between the edges of adjacent sub-pixel units PX in the first pixel region P1. Examples of possible implementations are given below.

[0074] For example, as shown in Figure 2, the width of the sub-pixel unit PX in the second pixel region P2 (including the first sub-pixel region P21 and the second sub-pixel region P22) along the first direction x can be set to be the same as the width of the sub-pixel unit PX in the first pixel region P1. Furthermore, there is a third spacing D3 between the centers of two adjacent sub-pixel units PX in the first pixel region P1, and a fourth spacing D4 between the centers of two adjacent sub-pixel units PX in the second pixel region P2. The fourth spacing D4 is greater than the third spacing D3. Thus, by adjusting the spacing between the centers of adjacent sub-pixel units PX in the second pixel region P2, the spacing between the edges of adjacent sub-pixel units PX in the second pixel region P2 can be made greater than the spacing between the edges of adjacent sub-pixel units PX in the first pixel region P1.

[0075] Figure 4 is a second schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure.

[0076] For example, as shown in Figure 4, along the first direction x, a third spacing D3 can be set between the centers of two adjacent sub-pixel units PX in the first pixel region P1, and a fourth spacing D4 can be set between the centers of two adjacent sub-pixel units PX in the second pixel region P2 (including the first sub-pixel region P21 and the second sub-pixel region P22). The third spacing D3 and the fourth spacing D4 are equal, that is, the spacing between the centers of two adjacent sub-pixel units PX in the first pixel region P1 is equal to the spacing between the centers of two adjacent sub-pixel units PX in the second pixel region P2. A single sub-pixel unit PX in P1 has a third width W3, and a single sub-pixel unit PX in the second pixel region P2 has a fourth width W4, and the fourth width W4 is smaller than the third width W3. That is, the width of a single sub-pixel unit PX in the second pixel region P2 is smaller than the width of a single sub-pixel unit PX in the first pixel region P1. Therefore, by adjusting the width of a single sub-pixel unit PX in the second pixel region P2, the spacing between the edges of adjacent sub-pixel units PX in the second pixel region P2 can be made greater than the spacing between the edges of adjacent sub-pixel units PX in the first pixel region P1.

[0077] In some embodiments, the spacing between the centers of adjacent sub-pixel units PX in the second pixel region P2 and the width of a single sub-pixel unit PX can also be adjusted simultaneously along the first direction x, so that the spacing between the edges of adjacent sub-pixel units PX in the second pixel region P2 is greater than the spacing between the edges of adjacent sub-pixel units PX in the first pixel region P1. This is not limited here.

[0078] Figure 5 is a third schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure.

[0079] In some embodiments, as shown in FIG5, along the first direction x and in a direction away from the first pixel region P1, the spacing between the edges of two adjacent sub-pixel units PX in the first sub-pixel region P21 gradually increases, and the spacing between the edges of two adjacent sub-pixel units PX in the second sub-pixel region P22 gradually increases. For example, as shown in FIG5, assuming the second direction y is the column direction, and the column of sub-pixel units PX adjacent to the first pixel region P1 in the second sub-pixel region P22 is the first column, and the column numbers increase sequentially along the direction away from the first pixel region P1, then for the first column of sub-pixel units PX and the second column of sub-pixel units PX in the second sub-pixel region P22, there is a second spacing D2 between the edges of two adjacent sub-pixel units PX, specifically D21. For the fourth column of sub-pixel units PX and the fifth column of sub-pixel units PX in the second sub-pixel region P22, there is a second spacing D2 between the edges of two adjacent sub-pixel units PX, specifically D22, where D22 is greater than D21. Along the first direction x, by gradually increasing the spacing between the edges of adjacent sub-pixel units PX in the first sub-pixel region P1 and the second sub-pixel region P2 in a direction away from the first pixel region P1, it can better adapt to the trend of the projection image resolution gradually decreasing from the center to the edge of the light modulation region P, thereby further ensuring the display effect of the projection image. In specific implementation, the spacing between the edges of adjacent sub-pixel units PX in the first sub-pixel region P21 and the spacing between the edges of adjacent sub-pixel units PX in the second sub-pixel region P22 can be gradually increased along the first direction x and in a direction away from the first pixel region P1 through various settings. Examples of possible implementation methods are given below.

[0080] For example, as shown in Figure 5, along the first direction x, the widths of any two sub-pixel units PX within the first sub-pixel region P21 are the same, and the widths of any two sub-pixel units PX within the second sub-pixel region P22 are the same. Specifically, along the first direction x, the widths of the sub-pixel units PX within the first sub-pixel region P21 and the second sub-pixel region P22 can be set to be the same as the widths of the sub-pixel units PX within the first pixel region P1, which is not limited here. Along the first direction x, and in a direction away from the first pixel region P1, the spacing between the centers of two adjacent sub-pixel units PX within the first sub-pixel region P1 gradually increases, and the spacing between the centers of two adjacent sub-pixel units PX within the second sub-pixel region P2 gradually increases. This achieves a pixel structure where, along the first direction x, and in a direction away from the first pixel region P1, the spacing between the edges of two adjacent sub-pixel units PX within the first sub-pixel region P21 gradually increases, and the spacing between the edges of two adjacent sub-pixel units PX within the second sub-pixel region P22 gradually increases.

[0081] Figure 6 is a fourth schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure.

[0082] For example, as shown in Figure 6, along the first direction x, and in a direction away from the first pixel region P1, the width of the sub-pixel unit PX in the first sub-pixel region P21 gradually decreases. Similarly, along the first direction x, and in a direction away from the first pixel region P1, the width of the sub-pixel unit PX in the second sub-pixel region P2 gradually decreases. Thus, by adjusting the width of the sub-pixel unit PX in the first sub-pixel region P21 and the second sub-pixel region P22 along the first direction x, and in a direction away from the first pixel region P1, a pixel structure can be achieved where, along the first direction x, and in a direction away from the first pixel region P1, the spacing between the edges of two adjacent sub-pixel units PX in the first sub-pixel region P21 gradually increases, and the spacing between the edges of two adjacent sub-pixel units PX in the second sub-pixel region P22 gradually increases. In specific implementation, a third spacing D3 can be set between the centers of two adjacent sub-pixel units PX within the first pixel region P1, and a fourth spacing D4 can be set between the centers of two adjacent sub-pixel units PX within the second pixel region P2 (including the first sub-pixel region P21 and the second sub-pixel region P22). The third spacing D3 and the fourth spacing D4 are equal, and no limitation is imposed here. In specific implementation, the widths of the sub-pixel units PX within the first sub-pixel region P21 and the second sub-pixel region P22 along the first direction x can also be set to be smaller than the width of the sub-pixel units PX within the first pixel region P1, and no limitation is imposed here.

[0083] In some embodiments, the spacing between the centers of adjacent sub-pixel units PX in the second pixel region P2 and the width of a single sub-pixel unit PX can be adjusted simultaneously along the first direction x to achieve a pixel structure in which the spacing between the edges of two adjacent sub-pixel units PX in the first sub-pixel region P21 gradually increases along the first direction x and in a direction away from the first pixel region P1, and the spacing between the edges of two adjacent sub-pixel units PX in the second sub-pixel region P22 gradually increases. This is not limited here.

[0084] In some embodiments, as shown in FIG2, along the first direction x, the width of the first sub-pixel region P21 is greater than or equal to 1 / 8 of the width of the light modulation region P and less than or equal to 1 / 4 of the width of the light modulation region P; and the width of the second pixel region P22 is greater than or equal to 1 / 8 of the width of the light modulation region P and less than or equal to 1 / 4 of the width of the light modulation region P, thereby helping to ensure the overall display effect of the projected image. For example, along the first direction x, the first sub-pixel region P21 has a fifth width W12, the light modulation region P has a first width W1, and the fifth width W12 is approximately 1 / 8 to 1 / 4 of the first width W1, for example, the fifth width W12 is 1 / 8, 1 / 6, or 1 / 4 of the first width W1, which is not limited here.

[0085] Figure 7 is the fifth schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure.

[0086] In some embodiments, as shown in FIG7, the second pixel region P2 further includes a third sub-pixel region P3 and a fourth sub-pixel region P4. Along the second direction y, the third sub-pixel region P3 and the fourth sub-pixel region P4 are located on opposite sides of the first pixel region P1. Along the first direction x, the widths of the third sub-pixel region P3 and the fourth sub-pixel region P4 are equal to the total widths of the first pixel region P1, the first sub-pixel region P21, and the second sub-pixel region P22, respectively, and equal to the first width W1 of the light modulation region P along the first direction x. In specific implementations, the arrangement of the sub-pixel units PX within the third sub-pixel region P3 and the fourth sub-pixel region P4 can refer to the arrangement of the first sub-pixel region P1 and the second sub-pixel region P2, and will not be elaborated here.

[0087] Figure 8 is a sixth schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure.

[0088] In some embodiments, as shown in FIG8, the shape of the light modulation region P is rectangular, with adjacent sides of the rectangle parallel to the first direction x and the second direction y, respectively. For example, as shown in FIG8, the light modulation region P includes adjacent first side PL1 and second side PL2, wherein the first side PL1 is parallel to the first direction x, and the second side PL2 is parallel to the second side PL2. The second pixel region P2 includes a plurality of sub-pixel regions P20, which are arranged one-to-one in the right-angled region RA of the light modulation region P, and adjacent sub-pixel regions P20 are separated by the first pixel region P1. Specifically, the right-angled region RA of the light modulation region P specifically refers to the region corresponding to the four right angles of the rectangle. On any side of the light modulation region P, adjacent sub-pixel regions P20 are spaced apart, and the first pixel region P1 is between adjacent sub-pixel regions P20. Regardless of whether it is in the first direction x or the second direction y, the right-angled region RA of the light modulation area P is located at the edge of the light modulation area P. Therefore, the clarity of the projected image corresponding to the right-angled region RA is worse than that of the projected image in other areas. Setting a sub-pixel area P20 in the right-angled region RA of the light modulation area P can specifically improve the clarity of the projected image in this area and enhance the overall display effect of the projected image.

[0089] In some embodiments, as shown in FIG8, along the first direction x, the width of the sub-pixel unit PX in the sub-pixel region P20 is smaller than the width of the sub-pixel unit PX in the first pixel region P1, and the spacing between the edges of any two adjacent sub-pixel units PX in the sub-pixel region P20 is equal. Specifically, as shown in FIG8, the sub-pixel unit PX in the first pixel region P1 has a third width W3, and the sub-pixel unit PX in the sub-pixel region P20 has a fourth width W4, wherein the fourth width W4 is smaller than the third width W3. Therefore, by adjusting the width of the sub-pixel unit PX in the sub-pixel region P20 along the first direction x, the spacing between the edges of adjacent sub-pixel units PX in the sub-pixel region P20 can be adjusted. In specific implementation, along the first direction x, the width of any two sub-pixel units PX in the sub-pixel region P20 can be set to be equal. Therefore, by setting the spacing between the centers of any two adjacent sub-pixel units PX in the sub-pixel region P20 to be equal, the spacing between the edges of any two adjacent sub-pixel units PX in the sub-pixel region P20 can be equal, which is not limited here.

[0090] Figure 9 is the seventh schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure.

[0091] In some embodiments, as shown in FIG9, along the first direction x, the width of the sub-pixel unit PX in the sub-pixel region P20 is smaller than the width of the sub-pixel unit PX in the first pixel region P1, and along the direction away from the first pixel region P1, the spacing between the edges of adjacent sub-pixel units PX in the sub-pixel region P20 gradually increases. For example, as shown in FIG9, assuming the second direction y is the column direction, and taking a column of sub-pixel units PX adjacent to the first pixel region P1 in the sub-pixel region P20 as the first column, and the column numbers increasing sequentially along the direction away from the first pixel region P1, then for the first column of sub-pixel units PX and the second column of sub-pixel units PX in the sub-pixel region P20, there is a second spacing D2 between the edges of two adjacent sub-pixel units PX, specifically D21. For the fourth column of sub-pixel units PX and the fifth column of sub-pixel units PX in the sub-pixel region P20, there is a second spacing D2 between the edges of two adjacent sub-pixel units PX, specifically D22, where D22 is greater than D21.

[0092] In some embodiments, as shown in FIG9, along the first direction x, the widths of any two sub-pixel units PX in the sub-pixel region P20 are equal, and along the direction away from the first pixel region P1, the distance between the centers of two adjacent sub-pixel units PX gradually increases. Thus, by adjusting the spacing between the centers of adjacent sub-pixel units PX in the sub-pixel region P20, the spacing between the edges of adjacent sub-pixel units PX in the sub-pixel region P20 gradually increases along the direction away from the first pixel region P1.

[0093] Figure 10 is the eighth schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure.

[0094] In some embodiments, as shown in FIG10, along the first direction x and in a direction away from the first pixel region P1, the width of the sub-pixel unit PX in the sub-pixel region P20 gradually decreases. This allows the spacing between the edges of adjacent sub-pixel units PX in the sub-pixel region P20 to gradually increase along the direction away from the first pixel region P1 by adjusting the width of the sub-pixel units PX in the sub-pixel region P20. Specifically, while adjusting the width of the sub-pixel units PX in the sub-pixel region P20 along the first direction x, the spacing between the centers of adjacent sub-pixel units PX in the sub-pixel region P20 along the first direction x can also be adjusted simultaneously to achieve a gradual increase in the spacing between the edges of adjacent sub-pixel units PX in the sub-pixel region P20 along the direction away from the first pixel region P1; this is not limited to this specific implementation.

[0095] In some embodiments, as shown in Figures 9 and 10, the number of sub-pixel units PX in each row or column of the sub-pixel region P20 is equal. Specifically, the first direction x can be defined as the row direction, and the second direction y can be defined as the column direction. The sub-pixel region P20 includes multiple rows of sub-pixel units PX, with each row containing the same number of sub-pixel units PX. Furthermore, the sub-pixel region P20 includes multiple columns of sub-pixel units, with each column containing the same number of sub-pixel units PX. That is, the shape of the sub-pixel region P20 can be rectangular. Alternatively, the first direction x can be defined as the column direction, and the second direction y as the row direction; this is not limited.

[0096] Figure 11A is a ninth schematic diagram of the pixel structure of the light modulation panel provided in the embodiment of this disclosure; Figure 11B is a tenth schematic diagram of the pixel structure of the light modulation panel provided in the embodiment of this disclosure.

[0097] In some embodiments, as shown in FIG11A, the number of sub-pixel units in each row of sub-pixel units arranged along the second direction y in sub-pixel region P20 tends to increase along the direction away from the first pixel region P1. For example, as shown in FIG11A, assuming the first direction x is the row direction, taking the row of sub-pixel units adjacent to the first pixel region P1 in sub-pixel region P20 as the first row, and the ordinal number of the rows increasing sequentially along the direction away from the first pixel region P1, then the number of sub-pixel units PX in the first row of sub-pixel units PX in sub-pixel region P20 is 3, the number of sub-pixel units PX in the second row of sub-pixel units PX is 3, and the number of sub-pixel units PX in the third row of sub-pixel units PX is 6. In specific implementations, the number of sub-pixel units PX in each row of sub-pixel region P20 can also change according to other trends along the direction away from the first pixel region P1, for example, the number of sub-pixel units PX in each row increases by one compared to the number of sub-pixel units PX in the previous row, which is not limited here. As shown in Figure 11A, a stepped boundary line is formed at the boundary between sub-pixel area P20 and first pixel area P1. First pixel area P1 is located in the middle region of light modulation area P relative to sub-pixel area P20, and the shape of first pixel area P1 is approximately elliptical or circular. This design can more closely approximate the law of edge sharpness attenuation in projected images, further improving the overall display effect. As shown in Figure 11B, when the shape of light modulation area P is set to rectangle, first pixel area P1 can be approximately inscribed within a first virtual circle, and light modulation area P can be approximately inscribed within a second virtual circle; no limitation is made here.

[0098] In some embodiments, as shown in FIG8, along the first direction x, the width of a single sub-pixel region P20 is greater than or equal to 1 / 8 of the width of the light modulation region and less than or equal to 1 / 4 of the width of the light modulation region. Along the second direction y, the width of a single sub-pixel region is greater than or equal to 1 / 8 of the width of the light modulation region and less than or equal to 1 / 4 of the width of the light modulation region. Specifically, as shown in FIG8, along the first direction x, the sub-pixel region P20 has a sixth width W10, and the light modulation region P has a first width W1. The sixth width W10 is approximately 1 / 8 to 1 / 4 of the first width W1, for example, the sixth width W10 is 1 / 8, 1 / 6, or 1 / 4 of the first width W1, which is not limited here. Along the second direction y, the sub-pixel region P20 has a seventh width W20, and the light modulation region P has a second width W2. The seventh width W20 is approximately 1 / 8 to 1 / 4 of the second width W2, for example, the seventh width W20 is 1 / 8, 1 / 6, or 1 / 4 of the second width W2, which is not limited here.

[0099] Figure 12 is an eleventh schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure.

[0100] In some embodiments, as shown in FIG12, the light modulation region P includes a plurality of pixel units PXG, and each pixel unit PXG includes a plurality of sub-pixel units PX arranged along a first direction x. For example, as shown in FIG12, a pixel unit PXG may include three adjacent sub-pixel units PX arranged along the first direction x, namely a first sub-pixel unit PX1, a second sub-pixel unit PX2, and a third sub-pixel unit PX3. The first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3 can be sub-pixel units of different colors. For example, the first sub-pixel unit PX1 can be a red sub-pixel unit, the second sub-pixel unit PX2 can be a green sub-pixel unit, and the third sub-pixel unit PX3 can be a blue sub-pixel unit, thereby enabling the projection device to achieve full-color display through a light modulation panel 2. In specific implementations, the projection device can be a single LCD product.

[0101] Figure 13 is a schematic diagram of the light combining structure of the light modulation panel provided in the embodiment of this disclosure.

[0102] In some embodiments, all sub-pixel units PX within the light modulation region P have the same color. A single light modulation panel 2 is used to manufacture a single LCD product, enabling monochrome displays with different brightness levels. In some embodiments, multiple light modulation panels with different color pixel units can also achieve color projection display after combining their light. As shown in Figure 13, the projection device may include multiple light modulation panels 2, and the projection component 3 may also include a light combining mirror 34. The multiple light modulation panels 2 are correspondingly disposed on the light incident surface of the light combining mirror 34, and the images of the multiple light modulation panels 2 are combined into one image by the light combining mirror 34. For example, as shown in Figure 13, the projection device may include three light modulation panels 2, namely a first light modulation panel 210, a second light modulation panel 220, and a third light modulation panel 230. The first light modulation panel 210 includes red sub-pixel units, the second light modulation panel 220 includes blue sub-pixel units, and the third light modulation panel 230 includes green sub-pixel units. By combining the images of the first light modulation panel 210, the second light modulation panel 220, and the third light modulation panel 230 into one image by the light combining mirror 34, full-color display can be achieved. In practice, the projection device can be a 3LCD product, and there are no restrictions on its use.

[0103] Figure 14 is a schematic diagram of the pixel structure of the light modulation panel provided in the embodiments of this disclosure.

[0104] This disclosure also provides a light modulation panel. In this embodiment, as shown in FIG14, along the first direction x, the spacing between the edges of two adjacent sub-pixel units PX in the second pixel region P2 is the same as the spacing between the edges of two adjacent sub-pixel units PX in the first pixel region P1. And along the second direction y, the spacing between the edges of two adjacent sub-pixel units PX in the second pixel region P2 is the same as the spacing between the edges of two adjacent sub-pixel units PX in the first pixel region P1. The light modulation panel 2 includes multiple data lines DL extending along the second direction y. In the first pixel region P1, sub-pixel units PX located in the same column along the second direction y are connected to the same data line DL, and each column of sub-pixel units PX is connected to one data line DL. In the second pixel region P2, sub-pixel units PX located in the same column along the second direction y are connected to the same data line DL, but not every column of sub-pixel units PX is connected to a data line. Specifically, between two adjacent columns of sub-pixel units PX connected to a data line, at least one column of sub-pixel units PX not connected to a data line is spaced apart. The data line DL is used to send data signals to the sub-pixel units to drive the sub-pixel units to emit light. Therefore, within the second pixel area P2, the sub-pixel units connected to the data line DL can be defined as effective sub-pixel units (connected to the data line DL) that can emit light for image display, and ineffective sub-pixel units (not connected to the data line DL) that cannot emit light. Thus, at least one column of ineffective sub-pixel units is spaced between two adjacent columns of effective sub-pixel units. Along the first direction x, the spacing between two adjacent columns of effective sub-pixel units increases, which helps to improve the problem of unclear images caused by poor edge resolution of the projected image.

[0105] Figure 15A is a schematic diagram of the pixel structure of the light modulation panel provided in the embodiment of this disclosure; Figure 15B is a schematic diagram of the driving method of the projection device provided in the embodiment of this disclosure.

[0106] This disclosure also provides a driving method for a light modulation panel. In this embodiment, as shown in FIG15A, along the first direction x, the spacing between the edges of two adjacent sub-pixel units PX in the second pixel area P2 is the same as the spacing between the edges of two adjacent sub-pixel units PX in the first pixel area P1. And along the second direction y, the spacing between the edges of two adjacent sub-pixel units PX in the second pixel area P2 is the same as the spacing between the edges of two adjacent sub-pixel units PX in the first pixel area P1. Furthermore, within the second pixel area P2, each column of sub-pixel units PX is connected to a data line DL. In this embodiment, the signal source design can be changed, and through software algorithm optimization, the image data of the light modulation panel 2 can be differentiated, so that the central area (first pixel area P1) receives image data with a resolution of FHD or higher, ensuring that the image displayed in the central area of ​​the light modulation panel 2 is clear. The edge area of ​​the light modulation panel 2 receives low-resolution image data, making the edges of the light modulation panel 2 display differently from the central area, thus avoiding crosstalk in the image display and compensating for deviations in light projection. The specific implementation is shown in Figure 15B. For the edge region (second pixel region P2), the display data of the original four pixel units in the related technology is shown in Figure 15Ba, which are W255 (including three sub-pixel units with display data of R255, G255 and B255 respectively), W210 (including three sub-pixel units with display data of R210, G210 and B210 respectively), W180 (including three sub-pixel units with display data of R180, G180 and B180 respectively) and W150 (including three sub-pixel units with display data of R150, G150 and B150 respectively). In this embodiment, the display data of the four pixel units corresponding to a in Figure 15B is shown in b in Figure 15B. They are W255 (including three sub-pixel units with display data of R255, G255 and B255 respectively), W210 (including three sub-pixel units with display data of R210, G210 and B210 respectively), and W210 (including three sub-pixel units with display data of R210, G210 and B210 respectively). The TCON receives the image data from the whole machine, judges the pixels in the edge area, and reduces the resolution by repeating the display. The actual display data resolution received in the edge area matches the image resolution of the edge area, thereby improving the image clarity of the edge area.

[0107] Figure 16 is a schematic diagram of the structure of the projection device provided in the embodiment of this disclosure.

[0108] In this embodiment of the present disclosure, as shown in FIG16, the projection device includes: a light source assembly 1, a light modulation panel 2, and a projection assembly 3. The light source assembly 1 provides projection light; the light modulation panel 2 can be any of the light modulation panels provided in the preceding embodiments, located on the light-emitting side of the light source assembly 1, and is used to modulate the projection light emitted from the light source assembly 1 to form a projected image; the projection assembly 3 is located on the light-emitting side of the light modulation panel, and is used to transmit the light modulated by the light modulation panel 2 onto a display medium such as a projection screen to display the projected image. The light modulation panel 2 can be a transmissive LCD panel or other panels with light modulation function, such as a Liquid Crystal On Silicon (LCOS) panel, etc., and is not limited thereto. The figure illustrates a transmissive LCD panel as an example. The projection assembly 3 may include optical elements such as a second Fresnel lens 31, a reflector 32, and a projection lens 33. In practical implementation, the projection assembly 3 can also add other optical elements and / or reduce some optical elements. For example, the second Fresnel lens 31 can be omitted, and / or one reflector 32 can be reduced, and / or a beam combiner can be added, etc. The specific settings can be made according to the actual situation and are not limited here. In practical implementation, the projection device can be a single LCD projection device or a 3LCD projection device, and is not limited here.

[0109] The projection device provided in this embodiment has the same or similar technical effects as the light modulation panel provided in any of the foregoing embodiments, and will not be described in detail here.

[0110] This disclosure also provides a projection display system, including the projection device provided in any of the foregoing embodiments. In some embodiments, the projection display system may further include a projection screen for receiving light emitted from the projection device and displaying a projected image. The projection system provided in this disclosure has the same or similar technical effects as the projection device provided in any of the foregoing embodiments, and will not be described in detail here.

[0111] Figure 17 is a schematic diagram of the structure of the mask provided in the embodiment of this disclosure.

[0112] This disclosure also provides a mask for fabricating the light modulation panel provided in any of the foregoing embodiments. As shown in FIG17, the mask includes a plurality of openings K, the positions of which correspond to the positions of sub-pixel units on the light modulation panel of any of the foregoing embodiments. Specifically, the mask includes a first light-transmitting area T1 corresponding to a first pixel area of ​​the light modulation panel, and a second light-transmitting area T2 corresponding to a second pixel area of ​​the light modulation panel. Along a first direction x, there is a first spacing D1 between the edges of two adjacent openings K in the first light-transmitting area T1, and a second spacing D2 between the edges of two adjacent openings K in the second light-transmitting area T2, wherein the second spacing D2 is greater than the first spacing D1.

[0113] Although preferred embodiments of this disclosure have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this disclosure.

[0114] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. A light modulation panel for use in a projection device, wherein, The light modulation panel includes a light modulation area, in which a plurality of sub-pixel units are arranged along intersecting first and second directions. The light modulation region includes an adjacent first pixel region and a second pixel region, wherein the second pixel region is located in the outer region of the light modulation region relative to the first pixel region; along the first direction, there is a first spacing between the edges of two adjacent sub-pixel units in the first pixel region, and there is a second spacing between the edges of two adjacent sub-pixel units in the second pixel region, wherein the second spacing is greater than the first spacing.

2. The light modulation panel as described in claim 1, wherein, The second spacing is less than or equal to twice the first spacing.

3. The light modulation panel as described in claim 1 or 2, wherein, The second pixel region includes a first sub-pixel region and a second sub-pixel region. Along the first direction, the first sub-pixel region and the second sub-pixel region are located on opposite sides of the first pixel region. Along the second direction, the width of the first sub-pixel region and the width of the second sub-pixel region are the same as the width of the first pixel region.

4. The light modulation panel as described in claim 3, wherein, Along the first direction, the spacing between any two adjacent edges of the sub-pixel units in the first sub-pixel region is equal, and the spacing between any two adjacent edges of the sub-pixel units in the second sub-pixel region is equal.

5. The light modulation panel as described in claim 3, wherein, Along the first direction, and along the direction away from the first pixel region, the spacing between the edges of two adjacent sub-pixel units in the first sub-pixel region gradually increases, and the spacing between the edges of two adjacent sub-pixel units in the second sub-pixel region gradually increases.

6. The light modulation panel as described in claim 5, wherein, Along the first direction, any two sub-pixel units in the first sub-pixel region have the same width, and any two sub-pixel units in the second sub-pixel region have the same width. Along the first direction, and along the direction away from the first pixel region, the first sub-pixel region The spacing between the centers of two adjacent sub-pixel units gradually increases, and the spacing between the centers of two adjacent sub-pixel units in the second sub-pixel region also gradually increases.

7. The light modulation panel as described in claim 5, wherein, Along the first direction, and along the direction away from the first pixel region, the width of the sub-pixel unit in the first sub-pixel region gradually decreases; Along the first direction, and along the direction from the inside to the outside of the light modulation region, the width of the sub-pixel unit in the second sub-pixel region gradually decreases.

8. The light modulation panel according to any one of claims 3 to 7, wherein, Along the first direction, the width of the first sub-pixel region is greater than or equal to 1 / 8 of the width of the light modulation region, and less than or equal to 1 / 4 of the width of the light modulation region; Along the first direction, the width of the second sub-pixel region is greater than or equal to 1 / 8 of the width of the light modulation region, and less than or equal to 1 / 4 of the width of the light modulation region.

9. The light modulation panel according to any one of claims 3 to 8, wherein, The second pixel region further includes a third sub-pixel region and a fourth sub-pixel region. Along the second direction, the third sub-pixel region and the fourth sub-pixel region are located on opposite sides of the first pixel region. Along the first direction, the width of the third sub-pixel region and the width of the fourth sub-pixel region are equal to the total width of the first pixel region, the first sub-pixel region and the second sub-pixel region, respectively.

10. The light modulation panel as claimed in claim 1 or 2, wherein, The shape of the optical modulation region is rectangular, and the two adjacent sides of the rectangle are parallel to the first direction and the second direction, respectively; The second pixel region includes multiple sub-pixel regions, which are arranged one-to-one in the right-angled area of ​​the light modulation region, and two adjacent sub-pixel regions are separated by the first pixel region.

11. The light modulation panel as claimed in claim 10, wherein, Along the first direction, the width of the sub-pixel unit in the sub-pixel region is smaller than the width of the sub-pixel unit in the first pixel region, and the spacing between the edges of any two adjacent sub-pixel units in the sub-pixel region is equal.

12. The light modulation panel as claimed in claim 10, wherein, Along the first direction, the width of the sub-pixel unit in the sub-pixel region is smaller than the width of the sub-pixel unit in the first pixel region, and along the direction away from the first pixel region, the spacing between the edges of adjacent sub-pixel units in the sub-pixel region gradually increases.

13. The light modulation panel as claimed in claim 12, wherein, Along the first direction, any two sub-pixel units within the sub-pixel region have equal widths, and along the direction away from the first pixel region, the distance between the centers of two adjacent sub-pixel units gradually increases.

14. The light modulation panel as claimed in claim 12, wherein, Along the first direction, and along the direction away from the first pixel region, the width of the sub-pixel unit within the sub-pixel region gradually decreases.

15. The light modulation panel according to any one of claims 10 to 14, wherein, Within the sub-pixel region, each row or column contains the same number of sub-pixel units.

16. The light modulation panel according to any one of claims 10 to 14, wherein, Along the direction away from the first pixel region, the number of sub-pixel units contained in each row of sub-pixel units arranged along the second direction in the sub-pixel region tends to increase.

17. The light modulation panel according to any one of claims 10 to 16, wherein, Along the first direction, the width of a single sub-pixel region is greater than or equal to 1 / 8 of the width of the light modulation region, and less than or equal to 1 / 4 of the width of the light modulation region; Along the second direction, the width of a single sub-pixel region is greater than or equal to 1 / 8 of the width of the light modulation region and less than or equal to 1 / 4 of the width of the light modulation region.

18. The light modulation panel according to any one of claims 1 to 17, wherein, The width of the optical modulation region along the first direction is greater than its width along the second direction.

19. The light modulation panel according to any one of claims 1 to 18, wherein, The light modulation region includes multiple pixel units, and each pixel unit includes multiple sub-pixel units arranged along the first direction.

20. A projection device, wherein, Includes the light modulation panel as described in any one of claims 1 to 19; The projection device further includes a light source assembly and a projection assembly; the light modulation panel is located on the light-emitting side of the light source assembly, and the projection assembly is located on the light-emitting side of the light modulation panel.

21. A projection display system, wherein, Including the projection device as described in claim 20.

Images