Head-up display device, design method thereof, vehicle, control device

Abstract

The embodiment of the application provides a head-up display device, a design method thereof, a carrier and a regulation device, and relates to the technical field of head-up display.The head-up display device provided by the embodiment of the application comprises: an image source configured to generate left-eye image light beams and right-eye image light beams; and a cylindrical grating located on the propagation paths of the left-eye image light beams and the right-eye image light beams and configured to split and project the left-eye image light beams and the right-eye image light beams.The image source comprises a plurality of pixels, the pixels are square, and the pixels comprise at least four sub-pixels of different light-emitting colors.The head-up display device provided by the embodiment of the application can reduce the crosstalk problem.

Description

Technical Field

[0001] This invention relates to the field of head-up display technology, and more particularly to head-up display devices, design methods, carriers, and control equipment thereof. Background Technology

[0002] As cars become more and more popular, they are also becoming increasingly intelligent. In order to improve driving safety and make drivers more focused on the road, more and more vehicles are using head-up displays (HUDs) instead of dashboards to display driving information. With the development of head-up displays, there are now different types of HUDs, among which AR-HUDs have been widely used.

[0003] Common AR-HUDs use specially designed cylindrical gratings to split the light, allowing the left and right eyes to see different images, which are then merged in the user's brain to create a 3D effect. However, these cylindrical gratings are prone to crosstalk, causing the images from the left and right eyes to overlap. Summary of the Invention

[0004] This invention provides a head-up display device and its design method, carrier, and control equipment to mitigate crosstalk problems.

[0005] On one hand, embodiments of the present invention provide a head-up display device, comprising:

[0006] Image source, used to generate left-eye image beam and right-eye image beam;

[0007] A cylindrical grating is located on the propagation path of the left-eye image beam and the right-eye image beam, and is used to split and project the left-eye image beam and the right-eye image beam.

[0008] The image source consists of multiple pixels, each pixel is square, and each pixel includes at least four sub-pixels with different luminous colors.

[0009] Optionally, the lenticular grating includes at least two lenticular zones, each lenticular zone including at least two lenticular lenses; the at least two lenticular zones include a first lenticular zone and a second lenticular zone; the subpixel includes a first type of subpixel, which is configured to reduce the emission brightness or turn off; of the first lenticular zone and the second lenticular zone, the first lenticular zone includes the first type of subpixel.

[0010] Optionally, the pixel includes a first type of sub-pixel and a second type of sub-pixel, the second type of sub-pixel being configured to increase luminous brightness.

[0011] Optionally, the aspect ratio of the first type of sub-pixels is greater than that of the second type of sub-pixels.

[0012] Optionally, at least four sub-pixels with different luminous colors include a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel;

[0013] Red subpixels emit red light, green subpixels emit green light, blue subpixels emit blue light, and white subpixels emit white light.

[0014] Optionally, the sub-pixel includes a first type of sub-pixel, which is configured to reduce luminance or turn off; within the same pixel, the red sub-pixel, green sub-pixel, and blue sub-pixel are the first type of sub-pixel.

[0015] Optionally, the sub-pixel includes a first type of sub-pixel, which is configured to reduce the luminance or turn off; the white sub-pixel is a first type of sub-pixel.

[0016] Optionally, within the same pixel, the red sub-pixel, green sub-pixel, blue sub-pixel, and white sub-pixel are arranged along a first direction.

[0017] Optionally, along the second direction, multiple red sub-pixels are repeated;

[0018] Along the second direction, multiple green sub-pixels are repeated;

[0019] Along the second direction, multiple blue sub-pixels are repeated;

[0020] Along the second direction, multiple white sub-pixels are repeatedly arranged;

[0021] The second direction intersects with the first direction.

[0022] Optionally, the white subpixels in two pixels are set to be adjacent.

[0023] Optionally, in the same pixel, the red sub-pixel, green sub-pixel, and blue sub-pixel are arranged along a first direction, and the white sub-pixel is located on the same side of the red sub-pixel, green sub-pixel, and blue sub-pixel along a second direction;

[0024] The second direction intersects with the first direction.

[0025] Optionally, a pixel may include one or more white subpixels.

[0026] Optionally, multiple cylindrical lenses are arranged along a third direction;

[0027] A cylindrical lens consists of a central region and a peripheral region. The geometric center of the cylindrical lens is located in the central region along a third direction, while the peripheral region is located outside the central region.

[0028] The orthographic projection of the first type of sub-pixel onto the plane of the lenticular grating is located in the edge region.

[0029] On the other hand, embodiments of the present invention provide a vehicle including a head-up display device provided in any embodiment of the present invention, and a windshield.

[0030] On the other hand, embodiments of the present invention provide a design method for a head-up display device, the head-up display device including an image source and a lenticular lens grating; the image source is used to generate a left-eye image beam and a right-eye image beam; the lenticular lens grating is located on the propagation path of the left-eye image beam and the right-eye image beam, and is used to split and project the left-eye image beam and the right-eye image beam; the image source includes multiple pixels;

[0031] Design methods include:

[0032] The control pixel is square and includes at least four sub-pixels with different emission colors.

[0033] Optionally, the design method also includes:

[0034] Obtain multiple crosstalk regions on the cylindrical lens grating;

[0035] Based on multiple crosstalk regions, the lenticular grating is divided into at least two lenticular zones, each lenticular zone including at least two lenticular lenses, and the at least two lenticular zones including a first lenticular zone and a second lenticular zone; wherein, the first lenticular zone includes the crosstalk region;

[0036] The sub-pixels within a portion of the first cylindrical lens partition are controlled as first-type sub-pixels; wherein, the first-type sub-pixels are configured to reduce luminous intensity or turn off.

[0037] Optionally, while controlling the sub-pixels within a portion of the pixels in the first cylindrical lens partition to be first-type sub-pixels, the design method also includes: controlling the sub-pixels in the pixel other than the first-type sub-pixels to include second-type sub-pixels; wherein the second-type sub-pixels are configured to increase luminous brightness.

[0038] On the other hand, embodiments of the present invention provide a control device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the design method as described in any of the above embodiments.

[0039] The head-up display device provided in this embodiment of the invention reduces the area of ​​sub-pixels by dividing pixels into more sub-pixels, thereby reducing the area of ​​sub-pixels cut off by the edge of the cylindrical lens and mitigating the crosstalk problem caused by sub-pixels cut off by the edge of the cylindrical lens. Here, "sub-pixels cut off by the edge of the cylindrical lens" means that the sub-pixel overlaps with the edge of the cylindrical lens. Attached Figure Description

[0040] Figure 1 This is a three-dimensional structural diagram of a head-up display device provided in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the structure of a head-up display device provided in an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the structure of pixels and subpixels in the prior art;

[0043] Figure 4 This is a schematic diagram of the structure of pixels and sub-pixels provided in an embodiment of the present invention;

[0044] Figure 5 yes Figure 3 The distribution diagram of crosstalk in the pixel structure at low resolution;

[0045] Figure 6 yes Figure 3 The distribution of crosstalk in the pixel structure at high resolution;

[0046] Figure 7 yes Figure 4 The distribution diagram of crosstalk in the pixel structure at low resolution;

[0047] Figure 8 yes Figure 4 The distribution of crosstalk in the pixel structure at high resolution;

[0048] Figure 9 This is a schematic diagram of another head-up display device provided in an embodiment of the present invention;

[0049] Figure 10 This is a schematic diagram of another head-up display device provided in an embodiment of the present invention;

[0050] Figure 11 This is a schematic diagram of another head-up display device provided in an embodiment of the present invention;

[0051] Figure 12 This is a schematic diagram of another head-up display device provided in an embodiment of the present invention;

[0052] Figure 13 This is a schematic diagram of another head-up display device provided in an embodiment of the present invention;

[0053] Figure 14 This is a schematic diagram of another head-up display device provided in an embodiment of the present invention;

[0054] Figure 15 This is a schematic diagram of the structure of a vehicle provided in an embodiment of the present invention;

[0055] Figure 16 This invention provides a design method for a head-up display device.

[0056] Figure 17 This is another design method for a head-up display device provided in the embodiments of the present invention;

[0057] Figure 18 This is a schematic diagram of a control device provided in an embodiment of the present invention. Detailed Implementation

[0058] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0059] Research has found that crosstalk primarily originates at the curved edges of the cylindrical lenses in a lenticular grating. One approach to eliminate crosstalk is to use light-blocking devices to shield the light emitted by pixels closest to the curved edges of the cylindrical lenses in the image source. However, this method eliminates the light from pixels that do not cause crosstalk, leading to a decrease in the resolution of the head-up display (HUD). Conventional understanding is based on lenticular gratings commonly used in stereoscopic displays, where all pixels at the curved edges of the cylindrical lenses are typically shielded. Research has revealed that HUDs exhibit non-uniformity in image formation; that is, the imaging optical path causes increased crosstalk in some areas and decreased crosstalk in others.

[0060] Figure 1 This is a three-dimensional structural diagram of a head-up display device provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of a head-up display device provided in an embodiment of the present invention, for reference. Figure 1 and Figure 2 The head-up display device includes an image source 100 and a lenticular lens 200. The image source 100 generates a left-eye image beam and a right-eye image beam; the lenticular lens 200 is located in the propagation path of the left-eye and right-eye image beams and is used to split and project the left-eye and right-eye image beams. The lenticular lens 200 is a beam-splitting element that deflects the left-eye and right-eye image beams in different directions, so that the left-eye image beam is projected onto the left eye and the right-eye image beam is projected onto the right eye. The image source 100 includes a plurality of pixels 300, and each pixel 300 includes at least four sub-pixels 301 of different emitting colors.

[0061] refer to Figure 1 and Figure 2The cylindrical lens grating 200 includes a number of periodically arranged cylindrical lenses 400. However, due to the limitations of the manufacturing process of the cylindrical lenses 400, gaps inevitably exist between some adjacent cylindrical lenses 400 in the cylindrical lens grating 200. Light emitted from the image source 100 exits through the gaps between the cylindrical lenses 400, which can cause the images received by the left and right eyes to crosstalk. Figure 3 This is a schematic diagram of the structure of pixels and subpixels in the prior art. Figure 4 This is a schematic diagram of the structure of pixels and sub-pixels provided in an embodiment of the present invention, for reference. Figure 1 , Figure 2 , Figure 3 and Figure 4 In the prior art, a pixel 300 includes three sub-pixels 301 with different emission colors. Sub-pixels 301 located at the edge of the cylindrical lens 400 are cut off by the edge of the cylindrical lens 400. The larger the area of ​​the sub-pixel 301 cut off by the edge of the cylindrical lens 400, the more severe the crosstalk problem of that sub-pixel 301. In this embodiment, pixel 300 includes at least four sub-pixels 301 with different emission colors, such as... Figure 2 In the middle, the red sub-pixel 301a, green sub-pixel 301b, blue sub-pixel 301c, and white sub-pixel 301d are sub-pixels 301 of different emission colors. It can be understood that the pixel 300 is square. The more sub-pixels 301 a pixel 300 includes, the narrower the width of its sub-pixels 301. Correspondingly, the area of ​​the sub-pixel 301 cut by the edge of the cylindrical lens 400 is smaller, and the crosstalk problem of the sub-pixel 301 is also less.

[0062] Figure 5 yes Figure 3 The distribution of crosstalk in the pixel structure at low resolution. Figure 6 yes Figure 3 The distribution map of crosstalk in the pixel structure at high resolution. Figure 7 yes Figure 4 The distribution of crosstalk in the pixel structure at low resolution. Figure 8 yes Figure 4 The distribution map of crosstalk in the pixel structure at high resolution, combined with Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown in the figure, the colors in the figure represent the degree of crosstalk. Head-up display devices consisting of pixels with 4 subpixels have significantly less crosstalk at both low and high resolutions than those consisting of pixels with 3 subpixels.

[0063] Optionally, refer to Figure 1 and Figure 2The lenticular lens grating 200 includes at least two lenticular lens sections 210, each including at least two lenticular lenses 400. The at least two lenticular lens sections 210 include a first lenticular lens section 201 and a second lenticular lens section 202. Sub-pixels 301 include a first type of sub-pixels 3011, which are configured to reduce or turn off their luminous intensity. That is, based on the original luminous intensity, the luminous intensity is reduced, for example, by multiplying by a scaling factor or other means. Alternatively, the original luminous intensity is changed to no luminous intensity. Of the first lenticular lens section 201 and the second lenticular lens section 202, the first lenticular lens section 201 includes the first type of sub-pixels 3011. The first type of sub-pixels 3011 are located in the first lenticular lens section 201 and are not located in the second lenticular lens section 202. Light emitted from the first type of sub-pixels 3011 will be incident on the first lenticular lens section 201 and will not be incident on the second lenticular lens section 202. The second cylindrical lens partition 202 may contain a small amount of crosstalk light, or no crosstalk light at all, thus eliminating the need for the first type of sub-pixel 3011. This at least improves the resolution of the second cylindrical lens partition 202, thereby improving the resolution of the head-up display device. Figure 2 Taking two lenticular lens sections 210 as an example is not limiting the scope. In other embodiments, the lenticular lens grating 200 may also have other numbers of lenticular lens sections 210. This embodiment of the invention does not limit the number of sub-pixels 301 covered by each lenticular lens 400.

[0064] As an example, see reference Figure 2 The first lenticular lens partition 201 is a region with crosstalk issues, and the light emitted by the first type of sub-pixel 301 will pass through the first lenticular lens partition 201. The second lenticular lens partition 202 is a region without crosstalk issues, and the light emitted by the first type of sub-pixel 301 will not pass through the second lenticular lens partition 202. The first type of sub-pixel 3011 can be determined using a reverse tracing method: first, the image output from the head-up display device is received by the receiver, and the position of the crosstalk light rays in the received image is determined. Then, based on the position of the crosstalk light rays, the sub-pixels 301 on the image source 100 that output these crosstalk light rays are obtained by reverse tracing the light path. The sub-pixels 301 on the image source 100 that output these crosstalk light rays are the first type of sub-pixel 3011. It is understandable that not all the light rays emitted by the first type of sub-pixel 3011 will cause crosstalk; within the first lenticular lens partition 201, there are positions where crosstalk light rays exist and positions where crosstalk light rays do not exist.

[0065] By reducing or turning off the brightness of the first type of sub-pixel 3011, the crosstalk light incident on the first lenticular lens section 201 can be reduced, or even eliminated, from the light that causes crosstalk problems. The reason for reducing the light incident on the first lenticular lens section 201 is that if the light incident on the second lenticular lens section 202, which does not have crosstalk problems, were also reduced, the light emission of the sub-pixels of the image source 100 would decrease, leading to a drop in the resolution of the head-up display device and affecting image quality. However, by reducing the light incident on the first lenticular lens section 201, the crosstalk-causing light can be precisely reduced without affecting the image quality of the second lenticular lens section 202, thus reducing the impact on the resolution of the head-up display device and improving the image quality output by the head-up display device.

[0066] The head-up display device provided in this embodiment of the invention reduces the amount of light incident on the first lenticular lens section by lowering or turning off the brightness of the first type of sub-pixels, without affecting the amount of light incident on the second lenticular lens section. This reduces the amount of light that causes crosstalk, thereby mitigating the crosstalk problem of the head-up limiting device. Simultaneously, since the light incident on the second lenticular lens section is unaffected, the resolution reduction problem caused by the reduced output light of the head-up display device is reduced. Furthermore, by dividing the pixels into more sub-pixels, the head-up display device reduces the area of ​​the sub-pixels, thus reducing the area of ​​the sub-pixels cut off by the edge of the lenticular lens 400, and mitigating the crosstalk problem caused by the sub-pixels cut off by the edge of the lenticular lens 400.

[0067] Figure 9 This is a schematic diagram of another head-up display device provided in an embodiment of the present invention, for reference. Figure 9 Pixel 300 includes a first type of sub-pixel 3011 and a second type of sub-pixel 3012. The second type of sub-pixel 3012 is configured to increase its luminance. The first type of sub-pixel 3011 is a sub-pixel with crosstalk problems. The brightness of the first type of sub-pixel 3011 needs to be reduced or turned off to alleviate the crosstalk problem. However, if only the brightness of the first type of sub-pixel 3011 is reduced, the brightness of some pixels will be reduced, the image quality seen by the user will decrease, and the binocular fusion effect of the image will also be worse. The second type of sub-pixel 3012 is a sub-pixel without crosstalk problems. Configuring the second type of sub-pixel 3012, which is located in the same pixel 300 as the first type of sub-pixel 3011, to increase its luminance can compensate for the reduced brightness of the first type of sub-pixel 3011 in the same pixel 300, so that the brightness of the pixel remains unchanged and the binocular fusion effect of the image is improved.

[0068] Optionally, refer to Figure 9The aspect ratio of the first type of sub-pixel 3011 is greater than that of the second type of sub-pixel 3012. Since the size of pixel 300 is fixed, the smaller the aspect ratio of the first type of sub-pixel 3011, the wider and larger its area, leading to more severe crosstalk. Making the aspect ratio of the first type of sub-pixel 3011 greater than that of the second type of sub-pixel 3012 reduces the area of ​​the first type of sub-pixel 3011, thereby mitigating the crosstalk problem caused by it.

[0069] Optionally, at least four subpixels of different emitting colors include a red subpixel, a green subpixel, a blue subpixel, and a white subpixel; the red subpixel emits red light, the green subpixel emits green light, the blue subpixel emits blue light, and the white subpixel emits white light. Common pixels are typically composed of red, green, and blue subpixels. Adding a white subpixel reduces the area of ​​the subpixel, thus minimizing the area of ​​the subpixel cut off by the cylindrical lens 400 and reducing subpixel crosstalk.

[0070] Within the same pixel, if any one of the red, green, and blue sub-pixels is a first-class sub-pixel, adjusting the brightness of that single sub-pixel will affect the color displayed by that pixel, thus degrading the image quality displayed by the head-up display device. Optionally, within the same pixel, the red, green, and blue sub-pixels, or the white sub-pixel, can all be first-class sub-pixels. When any one of the red, green, and blue sub-pixels is a first-class sub-pixel, to prevent the color displayed by that pixel from changing, all three sub-pixels should be first-class sub-pixels, and their brightness should be simultaneously reduced while the brightness of the white sub-pixel is increased. This reduces the variables involved in adjusting brightness, simplifies the adjustment strategy, and improves the display effect of the head-up display device. The white sub-pixel is only used to adjust the pixel's brightness. When the white sub-pixel in a pixel is a first-class sub-pixel, adjusting only the white sub-pixel will not affect the color displayed by the pixel. Therefore, the white sub-pixel can be a first-class sub-pixel independently.

[0071] Figure 10 This is a schematic diagram of another head-up display device provided in an embodiment of the present invention, for reference. Figure 10 Within the same pixel, red sub-pixels 301a, green sub-pixels 301b, blue sub-pixels 301c, and white sub-pixels 301d are arranged along the first direction X. This allows the sub-pixels 301 to have a larger aspect ratio and a narrower width, thereby making the area of ​​the sub-pixels 301 cut off by the edge of the cylindrical lens 400 smaller.

[0072] Optionally, along the second direction Y, multiple red sub-pixels 301a are arranged repeatedly; along the second direction Y, multiple green sub-pixels 301b are arranged repeatedly; along the second direction Y, multiple blue sub-pixels 301c are arranged repeatedly; along the second direction Y, multiple white sub-pixels 301d are arranged repeatedly; wherein the second direction Y intersects with the first direction X.

[0073] Figure 11 This is a schematic diagram of another head-up display device provided in an embodiment of the present invention, for reference. Figure 11 By arranging the white sub-pixels 301d in two pixels 300 adjacently, all sub-pixels 301 projected onto the edge of the cylindrical lens 400 are white sub-pixels 301d. This ensures that the first type of sub-pixels 3011 consists only of white sub-pixels 301d. Therefore, when adjusting the brightness of sub-pixels 301, it is only necessary to reduce the brightness of the white sub-pixels 301d that are part of the first type of sub-pixels 3011, and increase the brightness of the red sub-pixels 301a, green sub-pixels 301b, and blue sub-pixels 301c that are in the same pixel 300 as the first type of sub-pixels 3011, thus simplifying the adjustment strategy.

[0074] Figure 12 This is a schematic diagram of another head-up display device provided in an embodiment of the present invention, for reference. Figure 12 In the same pixel, red sub-pixels 301a, green sub-pixels 301b and blue sub-pixels 301c are arranged along the first direction, and white sub-pixels 301d are located on the same side of red sub-pixels 301a, green sub-pixels 301b and blue sub-pixels 301c along the second direction Y; wherein, the second direction Y intersects the first direction X.

[0075] Figure 13 This is a schematic diagram of another head-up display device provided in an embodiment of the present invention, for reference. Figure 12 and Figure 13 The pixel includes one or more white subpixels 301d. Figure 13 The pixel shown includes multiple white sub-pixels 301d.

[0076] Figure 14 This is a schematic diagram of another head-up display device provided in an embodiment of the present invention, for reference. Figure 14Multiple cylindrical lenses 400 are arranged along a third direction X1. In one embodiment, the third direction X1 may be perpendicular to the extending direction of the cylindrical lenses 400. An angle between the third direction X1 and the first direction X is between 0° and 90°, and an angle between the third direction X1 and the second direction Y is between 0° and 90°. The cylindrical lens 400 includes a central region 401 and an edge region 402. The geometric center of the cylindrical lens 400 is located in the central region 401, and along the third direction X1, the edge region 402 is located outside the central region 401. The orthographic projection of the first type of sub-pixel 3011 onto the plane of the cylindrical lens grating is located in the edge region 402. Because light rays emitted from the gaps between the cylindrical lenses 400 can cause crosstalk, the first type of sub-pixel 3011 is typically located in the edge region 402 of the cylindrical lens 400.

[0077] Based on the same inventive concept, embodiments of the present invention provide a vehicle including a head-up display device provided in any embodiment of the present invention, and a windshield.

[0078] Figure 15 This is a structural schematic diagram of a vehicle provided in an embodiment of the present invention, for reference. Figure 15 Image source 100 outputs image light rays, which are then propagated through cylindrical lens grating 200 to curved reflector 500. Curved reflector 500 reflects the image light rays onto the windshield 600 of the vehicle, and the windshield 600 then reflects the image light rays into eye box 800. When the human eye observes the image light rays, a virtual image 700 is produced.

[0079] Based on the same inventive concept, embodiments of the present invention provide a design method for a head-up display device, with reference to... Figure 1 and Figure 2 The head-up display device includes an image source 100 and a lenticular lens 200. The image source 100 generates a left-eye image beam and a right-eye image beam. The lenticular lens 200 is located in the propagation path of the left-eye and right-eye image beams and is used to split and project the left-eye and right-eye image beams. The image source 100 includes a plurality of pixels 300. The design method of the head-up display device includes: controlling the pixels to be square, and the control pixels including at least four sub-pixels of different emission colors. All pixels 300 are square. The more sub-pixels 301 a pixel 300 includes, the narrower the width of its sub-pixels 301. Correspondingly, the area of ​​the sub-pixels 301 cut by the edge of the lenticular lens 400 is smaller, and the crosstalk problem of the sub-pixels 301 is also less.

[0080] Optionally, Figure 16 This invention provides a design method for a head-up display device, as described in an embodiment of the invention. Figure 16 The design methods include:

[0081] S101. Obtain multiple crosstalk regions on the cylindrical lens grating.

[0082] Specifically, the light from the receiving surface is first acquired. The receiving surface refers to the plane where the eye box is located, and the light from the receiving surface represents the light seen by the user during the use of the head-up display device. Next, crosstalk light in the light from the receiving surface is identified. Based on the optical path of the crosstalk light on the receiving surface, the distribution of the crosstalk light on the lenticular lens grating is traced back. Based on the distribution of the crosstalk light on the lenticular lens grating, multiple light crosstalk regions on the lenticular lens grating are obtained.

[0083] S102. Based on multiple light crosstalk regions, the cylindrical lens grating is divided into at least two cylindrical lens partitions, each of which includes at least two cylindrical lenses. The at least two cylindrical lens partitions include a first cylindrical lens partition and a second cylindrical lens partition; wherein, the first cylindrical lens partition includes the light crosstalk region.

[0084] Indiscriminately extinguishing subpixels near the edge of the cylindrical lens on the image source will cause subpixels without crosstalk issues to also be extinguished, thus reducing the resolution of the head-up display and affecting image quality. Distinguishing between crosstalk and non-crosstalk areas can reduce the impact of extinguishing subpixels or lowering their brightness on resolution, thereby improving image quality while reducing crosstalk.

[0085] S103. Control the sub-pixels within a portion of the pixels in the first cylindrical lens partition to be classified as first-type sub-pixels. The first-type sub-pixels are configured to reduce their luminous intensity or turn off.

[0086] By reducing or turning off the brightness of the first type of subpixels, the amount of light incident on the first lenticular lens section can be reduced, or even eliminated, from the light that causes crosstalk problems. The reason for reducing only the light incident on the first lenticular lens section is that similarly reducing the light incident on the second lenticular lens section, which does not have crosstalk problems, would reduce the amount of light emitted by the subpixels of the image source, leading to a decrease in the resolution of the head-up display (HUD) and affecting image quality. However, by reducing the light incident on the first lenticular lens section, the crosstalk-causing light can be precisely reduced without affecting the image quality of the second lenticular lens section, thus minimizing the impact on the HUD's resolution and improving the image quality output by the HUD.

[0087] The head-up display device design method provided in this embodiment of the invention reduces the amount of light incident on the first cylindrical lens partition by only turning off or reducing the brightness of the first type of sub-pixels, thereby mitigating the crosstalk problem of the head-up display device; at the same time, since the light incident on the second cylindrical lens partition is not affected, the resolution reduction problem caused by the reduction of output light in the head-up display device is reduced.

[0088] Figure 17 This is another design method for a head-up display device provided in the embodiments of the present invention. Figure 17 The design method shown is based on the above embodiments, further explaining how to improve the display effect of the head-up display device while eliminating crosstalk problems. (Refer to...) Figure 17 The design methods include:

[0089] S201. Obtain multiple crosstalk regions on the cylindrical lens grating.

[0090] S202. Based on multiple light crosstalk regions, the cylindrical lens grating is divided into at least two cylindrical lens partitions, each of which includes at least two cylindrical lenses. The at least two cylindrical lens partitions include a first cylindrical lens partition and a second cylindrical lens partition; wherein, the first cylindrical lens partition includes the light crosstalk region.

[0091] S203. Control the sub-pixels within a portion of the pixels in the first cylindrical lens partition to be first-type sub-pixels, and control the sub-pixels in the pixels other than the first-type sub-pixels to include second-type sub-pixels; the first-type sub-pixels are configured to reduce the luminous brightness or turn off, and the second-type sub-pixels are configured to increase the luminous brightness.

[0092] Specifically, the brightness of the first type of sub-pixels needs to be reduced or turned off to alleviate crosstalk. However, if only the brightness of the first type of sub-pixels is reduced, the brightness of some pixels will decrease, resulting in a decline in the image quality seen by the user and a worse binocular fusion effect. Configuring the brightness of the second type of sub-pixels located in the same pixel as the first type of sub-pixels to be increased can compensate for the reduced brightness of the first type of sub-pixels within the same pixel, keeping the pixel brightness unchanged and thus improving the binocular fusion effect.

[0093] Figure 18 This is a schematic diagram of a control device provided in an embodiment of the present invention, with reference to... Figure 18 The control device 60 includes a memory 602, a processor 601, and a computer program stored in the memory 602 and executable on the processor. When the processor 601 executes the program, it implements the method described in the above embodiments. Figure 18 A block diagram of an exemplary control device suitable for implementing embodiments of the present invention is shown. Figure 18 The control device 60 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of the present invention. Figure 18 As shown, the control device 60 is presented in the form of a general-purpose computing device. The components of the control device 60 may include, but are not limited to: one or more processors 601, system memory 602, and bus 603 connecting different system components (including system memory 602 and processor 601).

[0094] Bus 603 represents one or more of several bus architectures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. For example, these architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0095] Control device 60 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by control device 60, including volatile and non-volatile media, removable and non-removable media.

[0096] System memory 602 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 604 and / or cache memory 605. Control device 60 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 606 may be used to read and write non-removable, non-volatile magnetic media (… Figure 18 Not shown; usually referred to as a "hard drive"). Although Figure 18 Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 603 via one or more data media interfaces. System memory 602 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the embodiments of the present invention.

[0097] A program / utility 608 having a set (at least one) of program modules 607 may be stored, for example, in system memory 602. Such program modules 607 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 607 typically perform the functions and / or methods described in the embodiments of the present invention.

[0098] The control device 60 can also communicate with one or more external devices 609 (e.g., keyboard, pointing device, display 610, etc.), and with one or more devices that enable user interaction with the device, and / or with any device that enables the control device 60 to communicate with one or more other computing devices (e.g., network card, modem, etc.). This communication can be performed via the input / output (I / O) interface 611. Furthermore, the control device 60 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via the network adapter 612. Figure 18 As shown, network adapter 612 communicates with other modules of control device 60 via bus 603. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with control device 60, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0099] The processor 601 executes various functional applications and data processing by running programs stored in the system memory 602.

[0100] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A head-up display device, characterized in that, include: An image source, which is used to generate a left-eye image beam and a right-eye image beam; A cylindrical grating is located on the propagation path of the left-eye image beam and the right-eye image beam, and is used to split and project the left-eye image beam and the right-eye image beam; The image source includes multiple pixels, each pixel being square and comprising at least four sub-pixels with different luminous colors; The cylindrical lens grating includes at least two cylindrical lens sections, and each cylindrical lens section includes at least two cylindrical lenses; the at least two cylindrical lens sections include a first cylindrical lens section and a second cylindrical lens section. The sub-pixel includes a first type of sub-pixel, which is configured to reduce luminance or turn off; of the first lenticular lens partition and the second lenticular lens partition, the first lenticular lens partition includes the first type of sub-pixel.

2. The head-up display device according to claim 1, characterized in that, The pixel includes a first type of sub-pixel and a second type of sub-pixel, the second type of sub-pixel being configured to increase luminous brightness.

3. The head-up display device according to claim 2, characterized in that, The aspect ratio of the first type of sub-pixels is greater than that of the second type of sub-pixels.

4. The head-up display device according to claim 1, characterized in that, The at least four sub-pixels with different luminous colors include red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels; The red sub-pixel emits red light, the green sub-pixel emits green light, the blue sub-pixel emits blue light, and the white sub-pixel emits white light.

5. The head-up display device according to claim 4, characterized in that, The sub-pixel includes a first type of sub-pixel, which is configured to reduce luminous intensity or turn off; Within the same pixel, the red sub-pixel, the green sub-pixel, and the blue sub-pixel are the first type of sub-pixel.

6. The head-up display device according to claim 4, characterized in that, The sub-pixel includes a first type of sub-pixel, which is configured to reduce luminous intensity or turn off; The white sub-pixel is the first type of sub-pixel.

7. The head-up display device according to claim 4, characterized in that, Within the same pixel, the red sub-pixel, the green sub-pixel, the blue sub-pixel, and the white sub-pixel are arranged along a first direction.

8. The head-up display device according to claim 7, characterized in that, Along the second direction, multiple red sub-pixels are repeatedly arranged; Along the second direction, the plurality of green sub-pixels are repeatedly arranged; Along the second direction, a plurality of the blue sub-pixels are repeatedly arranged; Along the second direction, a plurality of the white sub-pixels are repeatedly arranged; The second direction intersects with the first direction.

9. The head-up display device according to claim 7, characterized in that, The white sub-pixels of the two pixels are arranged adjacent to each other.

10. The head-up display device according to claim 4, characterized in that, In the same pixel, the red sub-pixel, the green sub-pixel, and the blue sub-pixel are arranged along a first direction, and the white sub-pixel is located on the same side of the red sub-pixel, the green sub-pixel, and the blue sub-pixel along a second direction; The second direction intersects with the first direction.

11. The head-up display device according to claim 10, characterized in that, The pixel includes one or more of the white sub-pixels.

12. The head-up display device according to claim 1, characterized in that, The plurality of cylindrical lenses are arranged along a third direction; The cylindrical lens includes a central region and an edge region. The geometric center of the cylindrical lens is located in the central region, and along the third direction, the edge region is located outside the central region. The orthographic projection of the first type of sub-pixel onto the plane of the cylindrical grating is located in the edge region.

13. A vehicle, characterized in that, Includes the head-up display device as described in any one of claims 1-12, and a windshield.

14. A design method for a head-up display device, characterized in that, The head-up display device includes an image source and a lenticular lens grating; the image source is used to generate a left-eye image beam and a right-eye image beam; the lenticular lens grating is located on the propagation path of the left-eye image beam and the right-eye image beam, and is used to split and project the left-eye image beam and the right-eye image beam; the image source includes multiple pixels; The design method includes: controlling the pixel to be square, and controlling the pixel to include at least 4 sub-pixels with different luminous colors; Also includes: Obtain multiple light crosstalk regions on the cylindrical lens grating; The lenticular grating is divided into at least two lenticular zones based on the multiple light crosstalk regions. Each lenticular zone includes at least two lenticular lenses, and the at least two lenticular zones include a first lenticular zone and a second lenticular zone. The first lenticular zone includes the light crosstalk regions. The sub-pixels within a portion of the pixels in the first cylindrical lens partition are controlled to be classified as first-type sub-pixels; wherein, the first-type sub-pixels are configured to reduce luminous intensity or turn off.

15. The design method according to claim 14, characterized in that, While controlling the sub-pixels within a portion of the pixels in the first cylindrical lens partition to be first-type sub-pixels, the design method further includes: controlling the sub-pixels in the pixel other than the first-type sub-pixels to include second-type sub-pixels; wherein the second-type sub-pixels are configured to increase luminous brightness.

16. A control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the design method as described in any one of claims 14-15.

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