Super-field-of-view display device

Abstract

In order to solve the problem that in a traditional display device, an image cannot break through the range of a display screen, the invention provides a super-field-of-view display device. The super-field-of-view display device comprises a display, a super-field-of-view light splitting element and a reflecting surface. A plurality of first visual area pixel parts and second visual area pixel parts are arranged on the displayer in the front-back direction. The first visual area pixel part is used for providing an in-screen scene, and the second visual area pixel part is used for providing an out-screen scene. Through the effects of the super-view-field light splitting element and the reflecting surface and the arrangement of the widths and the positions of the first visual area pixel part and the second visual area pixel part, the mirror image of the second visual area can be overlapped with the first visual area. At the moment, human eyes can see the out-of-screen scene provided by the second visual area pixel part through the reflecting surface and can directly see the on-screen scene provided by the first visual area pixel part at the same time, and finally, super-field-of-view display that the image exceeds the screen range is formed.

Description

Technical Field

[0001] This invention belongs to the field of display technology, and more specifically, this invention relates to an ultra-wide field of view display device. Background Technology

[0002] Existing mass-produced displays have bezels, preventing images from extending beyond the screen and thus limiting their application scenarios. To increase the display range, this invention proposes an ultra-field-of-view display device. This device employs a reflective optical structure and an innovative image synthesis method to create two distinct viewing zones symmetrical about the reflective surface. One viewing zone is used for the scene on the display screen, while the other is used for the scene outside the screen. Due to the symmetry of the two viewing zones, the reflection from the other viewing zone will inevitably overlap with the other, allowing viewers to simultaneously view both the on-screen and off-screen scenes without crosstalk, ultimately creating an ultra-field-of-view display where the image extends beyond the screen's boundaries. Summary of the Invention

[0003] To address the problem that images cannot extend beyond the display screen in traditional display devices, this invention proposes an ultra-wide field-of-view display device.

[0004] The super-field-of-view display device includes a display, a super-field-of-view beam splitter, and a reflective surface.

[0005] The display and the super-field beam splitter are placed in parallel; the reflective surface is placed at an arbitrary angle α to the display, where α < 180 degrees.

[0006] The projection direction of the normal of the reflective surface onto the display is defined as the front-back direction, and the direction parallel to the display plane and orthogonal to the front-back direction is defined as the left-right direction. The super-field-of-view beam splitter achieves beam splitting along the front-back direction.

[0007] Optionally, the ultra-wide field-of-view display device also includes a 3D beam splitter, which is placed parallel to the display and splits light in the left-right direction for 3D image display.

[0008] Alternatively, the reflective surface can be replaced with a semi-reflective and semi-transparent surface. Preferably, the super-field-of-view beam splitter uses a slit grating.

[0009] Optionally, the extra-field beam splitter uses a cylindrical lens grating.

[0010] In the second selection, the super-field-of-view beam splitter uses a lens array.

[0011] The display has several first viewing area pixel units and second viewing area pixel units arranged along the front-to-back direction. The first viewing area pixel units are used to provide the in-screen scene, and the second viewing area pixel units are used to provide the out-of-screen scene. The first viewing area pixel units are projected onto the first viewing area via a super-field-of-view beam splitter; the second viewing area pixel units are projected onto the second viewing area via a super-field-of-view beam splitter. The first viewing area is located between the reflective surface and the display; the second viewing area is located behind the reflective surface, and after reflection from the reflective surface, it overlaps with the first viewing area at the human eye position; at the human eye position, the second viewing area does not overlap with the first viewing area without reflection from the reflective surface.

[0012] Optionally, the first and second view areas may be different sizes.

[0013] Preferably, in order to maximize the degree of freedom of human eye position, the first visual area and the second visual area are symmetrical with respect to the reflective surface plane, and the first visual area and the second visual area intersect at the same intersection point on the reflective surface plane; When α < 90 degrees, for any pixel in the first viewing area, let β be the angle of incidence from the intersection of the first viewing area and the reflective plane to the super-field beam splitter; let d1 be the distance from the super-field beam splitter to the display in the direction perpendicular to the display; let d2 be the distance from the side of the first viewing area away from the reflective plane to the super-field beam splitter in the direction perpendicular to the display; let d3 be the distance from the side of the first viewing area away from the reflective plane to the intersection of the first viewing area and the reflective plane in the direction perpendicular to the display; and let w2 be the width of the first viewing area in the direction perpendicular to the reflective plane. Then, the width w1 of the pixel in the first viewing area should satisfy w1 ≤ (sinα × w2 - d3 × tanβ) × d1 / d2. Since the angle of incidence β is different for the pixel in the first viewing area at different positions, the width w1 of the pixel in the first viewing area at different positions is also different. For any second view area pixel, let β be the angle of incidence from the intersection of the second view area and the reflective plane to the super-field beam splitter; let d1 be the distance from the super-field beam splitter to the display in the direction perpendicular to the display; let d4 be the distance from the side of the second view area away from the reflective plane to the intersection of the second view area and the reflective plane in the direction perpendicular to the display; let w4 be the width of the second view area in the direction perpendicular to the reflective plane; then the width w3 of the second view area pixel should satisfy w3≤(sinα×w4-d4×tanβ)×d1 / (d2+d3+d4); since the angle of incidence β is different for second view area pixels at different positions, the width w3 of second view area pixels at different positions is also different. When α > 90 degrees, then w1 ≤ (sinα × w2 + d3 × tanβ) × d1 / d2; w3 ≤ (sinα × w4 + d4 × tanβ) × d1 / (d2 - d3 - d4); When α = 90 degrees, the first and second viewing areas are parallel to the display, so d3 = 0 and d4 = 0, and w1 = w3. When α≠90 degrees, the first and second viewing areas are not parallel to the display, so for the same incident angle β, w1≠w3; Optionally, the extended field-of-view display device also includes a camera for capturing and identifying the position of the human eye, and for setting appropriate d2+d3 and w2 in the extended field-of-view display device so that the human eye is located within the first field of view.

[0014] The technical principle of this invention is as follows: (1) Beyond the field of view principle To enable viewers to simultaneously view both on-screen and off-screen scenes without crosstalk, this invention comprises a first viewing area pixel unit and a second viewing area pixel unit. The first viewing area pixel unit provides the on-screen scene, and the second viewing area pixel unit provides the off-screen scene. The first viewing area pixel unit is projected onto the first viewing area via a super-field-of-view beam splitter; the second viewing area pixel unit is projected onto the second viewing area via a super-field-of-view beam splitter. At the viewer's eye position, the second viewing area overlaps with the first viewing area after reflection by a reflective surface. This allows the viewer to see the off-screen scene provided by the second viewing area pixel unit through the reflective surface, while simultaneously directly seeing the on-screen scene provided by the first viewing area pixel unit. Furthermore, because the second viewing area does not overlap with the first viewing area at the viewer's eye position without reflection by the reflective surface, no crosstalk occurs between the first and second viewing area pixel units. (2) View area overlap principle Furthermore, since the reflective surface is placed at an angle α to the display, and when α ≠ 90 degrees, under the traditional beam splitting structure, the first and second viewing areas are parallel to the display. Therefore, the second viewing area will not overlap with the first viewing area after reflection from the reflective surface. To solve this problem, this invention sets different w1 and w3 values, so that the first and second viewing areas are no longer parallel to the display, thus forming a symmetrical relationship with respect to the reflective surface plane, ultimately ensuring that the second viewing area can overlap with the first viewing area after reflection from the reflective surface.

[0015] In summary, because the present invention uses a pixel arrangement design, when the reflective surface is at any angle α to the display, the second viewing area overlaps with the first viewing area after being reflected by the reflective surface. At the human eye position, the in-screen image is provided by the pixel part of the first viewing area, and the out-of-screen image is provided by the pixel part of the second viewing area. Therefore, the human eye can see the out-of-screen scene provided by the pixel part of the second viewing area through the reflective surface, and at the same time can directly see the on-screen scene provided by the pixel part of the first viewing area, thus ultimately forming an ultra-field-of-view display where the image extends beyond the screen range. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the setup of the super-field-of-view beam splitter and the 3D beam splitter of the present invention.

[0018] Figure 3 This is a schematic diagram of the view area distribution of the present invention.

[0019] Figure 4 This is a schematic diagram illustrating the principle of constructing the first view area in this invention.

[0020] Figure 5 This is a schematic diagram illustrating the principle of constructing the second view area in this invention.

[0021] Icons: 110 - Display; 120 - Super-field-of-view beam splitter; 130 - 3D beam splitter; 200 - Reflective surface; 300 - Camera; 400 - Human eye; 111 - First viewing area pixel section; 112 - Second viewing area pixel section; 501 - First viewing area; 502 - Second viewing area.

[0022] It should be understood that the above figures are only schematic and are not drawn to scale. Detailed Implementation

[0023] Figure 1 This is an embodiment of an ultra-wide field-of-view display device.

[0024] The super-field-of-view display device includes a display 110, a super-field-of-view beam splitter 120, and a reflective surface 200.

[0025] The super-field-of-view beam splitter 120 is a slit grating, and the display 110 and the super-field-of-view beam splitter 120 are placed in parallel.

[0026] The projection direction of the normal of the reflecting surface 200 onto the display 110 is defined as the front-back direction, and the direction parallel to the plane of the display 110 and orthogonal to the front-back direction is defined as the left-right direction. Ultimately, in the diagram, x represents the horizontal direction, y represents the front-back direction, and z represents the vertical direction; in other diagrams, x, y, and z represent the same directions.

[0027] Please refer to Figure 2 The super-field-of-view beam splitter 120 has slits arranged in the front and rear y directions and achieves beam splitting along the y direction.

[0028] Please refer to Figure 1 and Figure 2 The super field of view display device also includes a 3D beam splitter 130, which is a cylindrical lens grating. The 3D beam splitter 130 is placed parallel to the display 110, and the cylindrical lenses of the 3D beam splitter 130 are arranged along the left and right x direction and split the light along the left and right x direction for 3D image display. Its technical principle is the same as that of a traditional grating 3D display, and will not be described in detail in this embodiment.

[0029] Please refer to Figure 1 The reflective surface 200 is placed at an angle α to the display 110, and α = 60 degrees.

[0030] Please refer to Figure 3 The display 110 has a plurality of first viewing area pixel units 111 and second viewing area pixel units 112 arranged along the front-to-back y-direction. The first viewing area pixel units 111 are used to provide the in-screen scene, and the second viewing area pixel units 112 are used to provide the out-of-screen scene. The first viewing area pixel units 111 are projected onto the first viewing area 501 via the super-field-of-view beam splitter 120; the second viewing area pixel units 112 are projected onto the second viewing area 502 via the super-field-of-view beam splitter 120. The first viewing area 501 is located between the reflective surface 200 and the display 110; the second viewing area 502 is located behind the reflective surface 200, and after being reflected by the reflective surface 200, it overlaps with the first viewing area 501 at the human eye position; at the human eye position, the second viewing area 502 does not overlap with the first viewing area 501 without being reflected by the reflective surface 200.

[0031] Please refer to Figure 3 To maximize the freedom of human eye position, the first viewing area 501 and the second viewing area 502 are symmetrical with respect to the plane of the reflecting surface 200, and the first viewing area 501 and the second viewing area 502 intersect at the same intersection point on the plane of the reflecting surface 200.

[0032] Please refer to Figure 4 For a certain first viewing area pixel 111, the incident angle β from the intersection of the first viewing area 501 and the plane of the reflective surface 200 to the super-field beam splitter 120 is 30 degrees. The distance d1 from the super-field beam splitter 120 to the display 110 is 1 mm, perpendicular to the display direction. The distance d2 from the side of the first viewing area 501 away from the plane of the reflective surface 200 to the super-field beam splitter 120 is 300 mm, perpendicular to the display direction. The distance d3 from the intersection of the first viewing area 501 and the plane of the reflective surface 200 to the side of the first viewing area 501 away from the plane of the reflective surface 200 is 100 mm, perpendicular to the reflective surface direction. The width w2 of the first viewing area 501 is 200 mm. Therefore, the width w1 of the first viewing area pixel 111 is 0.385 mm. mm, which satisfies w1≤(sinα×w2-d3×tanβ)×d1 / d2; since the incident angle β of the first view area pixel part 111 at different positions is different, the width w1 of the first view area pixel part 111 at different positions is also different. Please refer to Figure 5For a certain second viewing area pixel 112, the incident angle β from the intersection of the second viewing area 502 and the reflective surface 200 plane to the super-field beam splitter 120 is 30 degrees, the distance d1 from the super-field beam splitter 120 to the display 110 is 1 mm, perpendicular to the display direction, the distance d4 from the side of the second viewing area 502 away from the reflective surface 200 plane to the intersection of the second viewing area 502 and the reflective surface 200 plane is 100 mm, and the width w4 of the second viewing area 502 is 200 mm. Then the width w3 of the second viewing area pixel is 0.231 mm, which satisfies w3≤ (sinα×w4-d4×tanβ)×d1 / (d2+d3+d4). Since the incident angle β of the second viewing area pixel 112 is different at different positions, the width w3 of the second viewing area pixel 112 at different positions is also different. Obviously, since α≠90 degrees, the first viewing area 501 and the second viewing area 502 are not parallel to the display 110. Therefore, for the same incident angle β, w1≠w3. Please refer to Figure 1 The super field of view display device also includes a camera 300, which is used to capture and identify the position of the human eye 400, and to set appropriate d2+d3 and w2 in the super field of view display device so that the human eye 400 is located within the first viewing zone 501.

[0033] The technical principle of this invention is as follows: (1) Beyond the field of view principle To enable viewers to simultaneously view both the on-screen and off-screen scenes without crosstalk, this invention provides a first viewing area pixel unit 111 and a second viewing area pixel unit 112. The first viewing area pixel unit 111 provides the on-screen scene, and the second viewing area pixel unit 112 provides the off-screen scene. The first viewing area pixel unit 111 is projected onto the first viewing area 501 via a super-field-of-view beam splitter 120. The second viewing area pixel unit 112 is projected onto the second viewing area 502 via the super-field-of-view beam splitter 120. At the viewer's eye position, the second viewing area 502 overlaps with the first viewing area 501 after being reflected by the reflective surface 200, thereby enabling the viewer's eye 400 to see the off-screen scene provided by the second viewing area pixel unit 112 through the reflective surface 200, and simultaneously to directly see the on-screen scene provided by the first viewing area pixel unit 111. Furthermore, since the second visual area 502 does not overlap with the first visual area 501 at the location of the human eye 400 without being reflected by the reflective surface 200, no crosstalk will occur between the first visual area pixel portion 111 and the second visual area pixel portion 112. (2) View area overlap principle Furthermore, since the reflective surface 200 is placed at an angle α to the display 110, and when α = 60 degrees, under the traditional beam splitting structure, the first viewing area 501 and the second viewing area 502 are parallel to the display 110. Therefore, the second viewing area 502 will not overlap with the first viewing area 501 after reflection by the reflective surface 200. To solve this problem, the present invention sets w1 ≤ (sinα×w2-d3×tanβ)×d1 / d2 and w3 ≤ (sinα×w4-d4×tanβ)×d1 / (d2+d3+d4), which makes the first viewing area 501 and the second viewing area 502 no longer parallel to the display 110, thus forming a symmetrical relationship with respect to the reflective surface 200, ultimately ensuring that the second viewing area 502 can overlap with the first viewing area 501 after reflection by the reflective surface 200.

[0034] In summary, because the present invention uses a pixel arrangement design, when the reflective surface 200 and the display 110 are at any angle α, the second viewing area 502 overlaps with the first viewing area 501 after being reflected by the reflective surface 200. At the position of the human eye 400, the in-screen image is provided by the first viewing area pixel unit 111, and the out-of-screen image is provided by the second viewing area pixel unit 112. Therefore, the human eye 400 can see the out-of-screen scene provided by the second viewing area pixel unit 112 through the reflective surface 200, and at the same time can directly see the on-screen scene provided by the first viewing area pixel unit 111, thus ultimately forming an ultra-field-of-view display where the image exceeds the screen range.

Claims

1. An ultra-wide field-of-view display device, characterized in that: The ultra-field-of-view display device includes a display, an ultra-field-of-view beam splitter, and a reflective surface; The display and the super-field beam splitter are placed in parallel; the reflective surface is placed at an arbitrary angle α to the display, and α < 180 degrees; The projection direction of the normal of the reflective surface onto the display is defined as the front-back direction, and the direction parallel to the display plane and orthogonal to the front-back direction is defined as the left-right direction. The super-field-of-view beam splitter achieves beam splitting along the front-back direction. The display has a plurality of first viewing area pixel units and second viewing area pixel units arranged along the front-to-back direction; the first viewing area pixel units are used to provide the scene inside the screen, and the second viewing area pixel units are used to provide the scene outside the screen; the first viewing area pixel units are projected onto the first viewing area via a super-field-of-view beam splitter; the second viewing area pixel units are projected onto the second viewing area via a super-field-of-view beam splitter; the first viewing area is located between the reflective surface and the display; the second viewing area is located behind the reflective surface, and after being reflected by the reflective surface, it overlaps with the first viewing area at the human eye position; at the human eye position, the second viewing area does not overlap with the first viewing area without being reflected by the reflective surface.

2. The beyond-field display device as described in claim 1, characterized in that: The ultra-wide field-of-view display device also includes a 3D beam splitter, which is placed parallel to the display and splits light in the left-right direction for 3D image display.

3. The beyond-field display device as described in claim 1, characterized in that: The reflective surface was replaced with a semi-reflective, semi-transparent surface.

4. The beyond-field display device as described in claim 1, characterized in that: The extra-field beam splitter uses a slit grating.

5. The beyond-field display device as described in claim 1, characterized in that: The super-field-of-view beam splitter uses a cylindrical lens grating.

6. The beyond-field display device as described in claim 1, characterized in that: The extra-field beam splitter uses a lens array.

7. The beyond-field display device as described in claim 1, characterized in that: The first and second viewing areas are different sizes.

8. The beyond-field display device as described in claim 1, characterized in that: To maximize the degree of freedom of human eye position, the first and second visual zones are symmetrical with respect to the reflective surface plane, and the first and second visual zones intersect at the same intersection point on the reflective surface plane. When α < 90 degrees, for any pixel in the first viewing area, let β be the incident angle from the intersection of the first viewing area and the reflective surface plane to the super-field beam splitter. Perpendicular to the display direction, the distance from the super-field beam splitter to the display is d1; perpendicular to the display direction, the distance from the side of the first viewing area away from the reflective surface to the super-field beam splitter is d2; perpendicular to the display direction, the distance from the side of the first viewing area away from the reflective surface to the intersection of the first viewing area and the reflective surface is d3; perpendicular to the reflective surface direction, the width of the first viewing area is w2; then the width w1 of the pixel portion of the first viewing area should satisfy w1≤(sinα×w2-d3×tanβ)×d1 / d2; since the incident angle β of the pixel portion of the first viewing area is different at different positions, the width w1 of the pixel portion of the first viewing area is also different at different positions. For any pixel in the second viewing area, let β be the angle of incidence from the intersection of the second viewing area and the reflective plane to the super-field beam splitter. Perpendicular to the display direction, the distance from the super-field beam splitter to the display is d1; perpendicular to the display direction, the distance from the side of the second viewing area away from the reflective surface plane to the intersection of the second viewing area and the reflective surface plane is d4; perpendicular to the reflective surface direction, the width of the second viewing area is w4; then the width w3 of the pixel portion of the second viewing area should satisfy w3≤(sinα×w4-d4×tanβ)×d1 / (d2+d3+d4); since the incident angle β of the pixel portion of the second viewing area is different at different positions, the width w3 of the pixel portion of the second viewing area is also different at different positions. When α > 90 degrees, then w1 ≤ (sinα × w2 + d3 × tanβ) × d1 / d2; w3 ≤ (sinα × w4 + d4 × tanβ) × d1 / (d2 - d3 - d4); When α = 90 degrees, the first and second viewing areas are parallel to the display, so d3 = 0 and d4 = 0, and w1 = w3. When α ≠ 90 degrees, the first and second viewing areas are not parallel to the display, so for the same incident angle β, w1 ≠ w3.

9. The beyond-field display device as described in claim 1, characterized in that: The extended field-of-view display device also includes a camera for capturing and identifying the position of the human eye, and for setting appropriate d2+d3 and w2 so that the human eye is located within the first field of view.

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