A display device and a near-eye display apparatus

Abstract

The present invention discloses a display device, comprising a first pixel unit located at the center of a display area and a second pixel unit located at the edge of the display area, wherein a first light-emitting element in the first pixel unit and a first light-emitting adjustment unit corresponding thereto are not offset; along a direction from the first pixel unit to the second pixel unit, a second dimming center of a second light-emitting adjustment unit in the second pixel unit and a second light-emitting center of a second light-emitting element corresponding thereto are offset from each other, and the display area comprises an offset linear variation region, wherein in the offset linear variation region, the offset varies linearly with the image height of the pixel unit, thereby avoiding the visible virtual image spot boundary in the display area and improving the display effect of the display device.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display device and a near-eye display equipment. Background Art

[0002] A near-eye display system, such as a virtual reality display system or an augmented reality display system, can be placed on the user's head and allow the user to observe images in the display. For example, the near-eye display system can provide actual scene information to an airplane pilot or a car driver and allow the user to observe the displayed image while observing the actual scene.

[0003] The near-eye display system uses an optical magnification system such as an optical machine to amplify the image in the micro-optical display panel and transmit it to the human eye.

[0004] In existing near-eye display systems, the problem of large visual color deviation has always been an urgent problem to be solved. Summary of the Invention

[0005] The present invention provides a display device to improve the color shift problem of the display device at a wide viewing angle.

[0006] The present invention provides a display device, comprising a display area, the display area comprising a plurality of pixel units, each pixel unit comprising a plurality of light-emitting elements and a plurality of light-emitting adjustment units located on light-emitting sides of the plurality of light-emitting elements, the plurality of light-emitting adjustment units being arranged in a one-to-one correspondence with the plurality of light-emitting elements;

[0007] The pixel unit includes a first pixel unit and a second pixel unit, the first pixel unit is located at the center of the display area, and the second pixel unit is located on a side of the first pixel unit close to the edge of the display area;

[0008] The light-emitting element in the first pixel unit is a first light-emitting element, the light-emitting adjustment unit in the first pixel unit is a first light-emitting adjustment unit, the first light-emitting element includes a first light-emitting center, the first light-emitting adjustment unit includes a first dimming center, and the first light-emitting center of the first light-emitting element and the first dimming center of the first light-emitting adjustment unit corresponding thereto coincide with each other;

[0009] The light-emitting element in the second pixel unit is a second light-emitting element, the light-emitting adjustment unit in the second pixel unit is a second light-emitting adjustment unit, the second light-emitting element includes a second light-emitting center, and the second light-emitting adjustment unit includes a second dimming center; along the first direction, the second dimming center of the second light-emitting adjustment unit and the second light-emitting center of the second light-emitting element corresponding thereto are offset from each other and there is an offset, and the second dimming center is located on a side of the second light-emitting center away from the first light-emitting center;

[0010] The first direction is a direction from the first pixel unit to the second pixel unit;

[0011] The display area includes an offset linear change area, in which the offset changes linearly with the image height of the pixel unit;

[0012] In the linear shift region, along the first direction, the shift from the center of the display area to the i-th pixel unit is Shift i =n*(i*d), the offset of the i-th pixel unit Shift i Angle CRA with its principal optical axis i The relationship between Shift i =m*CRA i , the main optical axis angle CRA of the i-th pixel unit i =k*(i*d), where

[0013] The i is greater than 0 and less than or equal to 2 / N, where N is the number of the pixel units along the first direction;

[0014] d is the size of the pixel unit along the first direction;

[0015] n is the slope of the offset as the image height of the pixel unit changes, and n is a constant not equal to 0;

[0016] k is the slope of the principal optical axis angle as the image height changes, and k is a constant not equal to 0;

[0017] m is the slope of the change in the offset with the angle between the main optical axis and m is a constant not equal to 0;

[0018] In the first direction, the size of the light emitting area is x;

[0019] The k≤x / (2m*N*d).

[0020] In the display device provided by the present invention, the virtual image spot formed in the central area is expanded to cover the entire display area, thereby avoiding seeing obvious virtual image spot boundaries in the display area, making the display brightness of the display area more uniform, and improving the display effect of the display device.

[0021] The present invention also provides a near-eye display device, comprising the display apparatus as described above.

[0022] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a structural schematic diagram of a display device in the prior art;

[0025] Figure 2 for Figure 1 Schematic diagram of color shift curves of the display device at various viewing angles;

[0026] Figure 3 Schematic diagram of the structure of a display device in the related art;

[0027] Figure 4 for Figure 3 Schematic diagram of the local cross-sectional structure of the pixel unit at point ①;

[0028] Figure 5 for Figure 3 Schematic diagram of the local cross-sectional structure of the pixel unit at point ②;

[0029] Figure 6 for Figure 3 Schematic diagram of the local cross-sectional structure of the pixel unit at point ③;

[0030] Figure 7 for Figure 3 Schematic diagram of the cross-sectional structure along the C-C' direction;

[0031] Figure 8 for Figure 3 A graph showing relative brightness of the display device at different viewing angles at different locations;

[0032] Figure 9 for Figure 3 A graph showing the color deviation of the display device at different viewing angles and at different locations.

[0033] Figure 10 for Figure 3 A graph showing relative brightness of the display device at various viewing angles;

[0034] Figure 11 for Figure 3 A graph showing the color deviation of the display device at various viewing angles;

[0035] Figure 12 for Figure 3 Schematic diagram of the optical path of the display device;

[0036] Figure 13 A schematic structural diagram of a display device provided by an embodiment of the present invention;

[0037] Figure 14 for Figure 13 Schematic diagram of the cross-sectional structure along the II' direction;

[0038] Figure 15 for Figure 13 Schematic diagram of the cross-sectional structure along the K-K' direction;

[0039] Figure 16 A schematic diagram showing the corresponding relationship between the main optical axis angle and the image height of a display device in a linear offset variation region provided by an embodiment of the present invention;

[0040] Figure 17 A schematic diagram of an optical path of a display device provided by an embodiment of the present invention;

[0041] Figure 18 A schematic diagram of a partial cross-sectional structure of a display device provided by an embodiment of the present invention;

[0042] Figure 19 A schematic diagram showing the corresponding relationship between the main optical axis angle and the image height of a display device in a nonlinear offset variation region provided by an embodiment of the present invention;

[0043] Figure 20 A schematic diagram of the corresponding relationship between the principal optical axis angle and the image height of a display device provided by an embodiment of the present invention;

[0044] Figure 21 A schematic diagram of a partial structure of a display device provided by an embodiment of the present invention;

[0045] Figure 22 for Figure 21 Schematic diagram of the cross-sectional structure along the L-L' direction;

[0046] Figure 23A schematic diagram of a partial structure of another display device provided by an embodiment of the present invention;

[0047] Figure 24 for Figure 23 Schematic diagram of the cross-sectional structure along the M-M' direction;

[0048] Figure 25 A schematic diagram of a partial structure of another display device provided by an embodiment of the present invention;

[0049] Figure 26 for Figure 25 Schematic diagram of the cross-sectional structure along the P-P' direction;

[0050] Figure 27 A schematic diagram of a near-eye display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0051] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0052] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0053] Figure 1 Schematic diagram of the structure of a display device in the prior art. Figure 2 for Figure 1 Schematic diagram of color shift curve of the display device at various viewing angles, as shown in Figure 1-Figure 2As shown in the figure, in near-eye display technology, in order to obtain a larger field of view (FOV), the optical engine needs to collect light within different cone angles at different points on the display screen. The center angle of the light collection cone (Chief Ray Angle, CRA) varies with the image height. At the edge of the screen, the required light collection CRA is usually more than 20 degrees.

[0054] Figure 2 Shown in Figure 1 The display device 10 in the vertical direction A and the horizontal direction B, as the viewing angle changes, the color deviation value Δu′v′ changes, as shown in FIG. Figure 2 As shown, the inventors have discovered through research that due to the microcavity effect of the OLED display device and the four-corner light crosstalk effect of the color resistor, the color deviation values of the conventional display device 10 at a viewing angle greater than 20° are relatively large. This causes the display device 10 to have a color deviation problem within the screen when applied to near-eye display devices such as virtual reality (VR), augmented reality (AR), or electronic viewfinder (EVF).

[0055] Figure 3 is a structural diagram of a display device in the related art, Figure 4 for Figure 3 Schematic diagram of the local cross-sectional structure of the pixel unit at point ①, Figure 5 for Figure 3 Schematic diagram of the local cross-sectional structure of the pixel unit at point ②, Figure 6 for Figure 3 Schematic diagram of the local cross-sectional structure of the pixel unit at point ③, Figure 7 for Figure 3 Schematic diagram of the cross-sectional structure along the C-C' direction, Figure 8 for Figure 3 The relative brightness curve of the display device at different viewing angles at different points, Figure 9 for Figure 3 The color deviation value curve of the display device at different viewing angles at different points, Figure 10 for Figure 3 The relative brightness curve of the display device at various viewing angles is shown in the figure. Figure 11 for Figure 3 The color deviation value curve of the display device at various viewing angles is shown in FIG. Figure 3-Figure 11 As shown, the inventors further discovered that shifting the color resist 11 and the microlens 12 in the display device 10 relative to the light emitting element 13 at different image heights can improve the color deviation of the screen visual angle.

[0056] Specifically, such as Figure 3-Figure 7As shown, at point ①, the image height is 0mm, the color resist 11 and the microlens 12 are not displaced relative to the light-emitting element 13, and the emission angle α1 of the main ray of the pixel unit here is 0°; at point ②, the image height is x1mm, the color resist 11 and the microlens 12 are slightly offset relative to the light-emitting element 13, and the emission angle α2 of the main ray of the pixel unit here is greater than 0°; at point ③, the image height is x2mm, and x2 is greater than x1, the color resist 11 and the microlens 12 are significantly offset relative to the light-emitting element 13, and the emission angle α3 of the main ray of the pixel unit here is greater than the emission angle α2 of the main ray of the pixel unit at point ②. That is, as the image height increases, the offset of the color resist 11 and the microlens 12 relative to the light-emitting element 13 can be gradually increased so that the emission angle of the main ray of the pixel unit at each point is consistent with the CRA of the optical machine, so that the relative brightness of each point under the CRA viewing angle of the optical machine is increased and the color deviation value is reduced, thereby improving the color deviation of the screen visual field.

[0057] Figure 8 Shown Figure 3 The relative brightness of the display device 10 at different points (point ①, point ② and point ③) at each viewing angle (Viewangle), wherein the brightness at 0° viewing angle is normalized to 1, and the relative brightness can be understood as the relative value of the brightness at each viewing angle relative to the brightness at 0° viewing angle. Figure 9 Shown Figure 3 The color deviation values (Δu′v′) of the display device 10 at different viewing angles (Viewangle) at different points (point ①, point ②, and point ③) are as follows: Figure 8 and Figure 9 As shown, the color deviation curves and relative brightness curves at various viewing angles vary with each point, showing a gradual change as the point shifts. At each point, by displacing the color resist 11 and microlens 12 by a corresponding distance relative to the light-emitting element 13, the relative brightness at that point, under the CRA (Center-Receiving Area) viewing angle, increases, and the color deviation decreases, thereby improving the color skew of the screen's viewing angle.

[0058] Figure 10 Shown Figure 3-Figure 7 The relative brightness curve D and Figure 1 The relative brightness curve E of the display device 10 at each viewing angle is Figure 11 Shown Figure 3-Figure 7 The color deviation value curve F and Figure 1 The color deviation value curve G of the display device 10 at each viewing angle is shown in FIG. Figure 3-Figure 7 The color resist 11 and the micro lens 12 of the display device 10 are offset relative to the light emitting element 13 at different image heights. Figure 1The color resist and microlens of the display device 10 are not shifted relative to the light emitting element at different image heights, such as Figure 10 and Figure 11 As shown, by setting the color resist 11 and the microlens 12 to be offset by a certain distance relative to the light-emitting element 13, the relative brightness of the display device 10 at each viewing angle (Viewangle) is increased and the color deviation value (Δu′v′) is reduced, thereby improving the color deviation of the screen viewing angle, and the larger the viewing angle, the greater the improvement.

[0059] However, the inventors have found through further research that when the size of the light emitting element 13 is small, or the offset distance of the color resist 11 and / or the micro lens 12 relative to the light emitting element 13 is too large, Figure 3 The display device 10 shown may cause the problem of naked screen virtual image spots.

[0060] Specifically, Figure 12 for Figure 3 Schematic diagram of the optical path of the display device, when the size of the light emitting element 13 is small, or the color resist 11 and / or the micro lens 12 is offset too far relative to the light emitting element 13, such as Figure 12 As shown, the virtual image spot 14 can be obtained by extending the reverse direction of the main light ray at each point, as shown in FIG. Figure 3 As shown, when viewing the display device 10 , a brighter virtual image spot 14 is observed at the center of the display device 10 , thereby affecting the display effect of the display device 10 .

[0061] Figure 13 A schematic structural diagram of a display device provided by an embodiment of the present invention is shown in FIG. Figure 14 for Figure 13 Schematic diagram of the cross-sectional structure along the I-I' direction, Figure 15 for Figure 13 Schematic diagram of the cross-sectional structure along the K-K' direction.

[0062] like Figure 13-15 As shown, the display device 10 provided by the embodiment of the present invention includes a display area AA, which includes multiple pixel units 100. Each pixel unit 100 includes multiple light-emitting elements 13 and multiple light-emitting adjustment units 24 located on the light-emitting side of the multiple light-emitting elements 13. The multiple light-emitting adjustment units 24 are provided in a one-to-one correspondence with the multiple light-emitting elements 13. The light-emitting adjustment units 24 are used to adjust the emission direction of the light emitted by the light-emitting elements 13 to increase the relative brightness of the pixel unit 100 at a wide viewing angle and reduce the color deviation value, thereby improving the color deviation of the screen viewing angle.

[0063] The pixel unit 100 includes a first pixel unit 101 and a second pixel unit 102 . The first pixel unit 101 is located at the center of the display area AA, and the second pixel unit 102 is located on a side of the first pixel unit 101 close to an edge of the display area AA.

[0064] The first pixel unit 101 includes multiple first light-emitting elements 131 and multiple first light-emitting adjustment units 241, and the multiple first light-emitting elements 131 and the multiple first light-emitting adjustment units 241 are arranged in a one-to-one correspondence, and the light emitted by the first light-emitting element 131 is emitted through the corresponding first light-emitting adjustment unit 241.

[0065] Among them, the first light-emitting element 131 has a first light-emitting center 1310, and the first light-emitting adjustment unit 241 has a first dimming center 2410. The first light-emitting center 1310 of the first light-emitting element 131 coincides with the first dimming center 2410 of the corresponding first light-emitting adjustment unit 241, that is, the first dimming center 2410 is not offset relative to the first light-emitting element 131.

[0066] It should be noted that the coincidence of the first light emitting center 1310 of the first light emitting element 131 and the first dimming center 2410 of the corresponding first light output adjustment unit 241 refers to the coincidence of the vertical projection of the center of the first light emitting element 131 on the plane where the display device is located and the vertical projection of the center of the corresponding first light output adjustment unit 241 on the plane where the display device is located.

[0067] Continue to refer Figure 13 and Figure 15 The second pixel unit 102 includes a plurality of second light-emitting elements 132 and a plurality of second light-emitting adjustment units 242, and the plurality of second light-emitting elements 132 and the plurality of second light-emitting adjustment units 242 are arranged in a one-to-one correspondence, and the light emitted by the second light-emitting element 132 is emitted through the corresponding second light-emitting adjustment unit 242.

[0068] The light emitting element 13 in the second pixel unit 102 is a second light emitting element 132, the light emitting adjustment unit 24 in the second pixel unit 102 is a second light emitting adjustment unit 242, the second light emitting element 132 has a second light emitting center 1320, and the second light emitting adjustment unit 242 has a second dimming center 2420. Along the first direction J, that is, along the direction from the first pixel unit 101 to the second pixel unit 102, the second dimming center 2420 of the second light emitting adjustment unit 242 and the second light emitting center 1320 of the corresponding second light emitting element 132 are offset from each other, that is, the second dimming center 2420 of the second light emitting adjustment unit 242 is offset relative to the second light emitting center 1320 and there is The offset is shift, and the second dimming center 2420 is located on the side of the second luminous center 1320 away from the first luminous center 1310. With this arrangement, the second light-emitting adjustment unit 242 is offset toward the side away from the center of the display area AA, so that the main optical axis of the light beam emitted through the second light-emitting adjustment unit 242 is tilted in the direction of the wide viewing angle, that is, the emission angle of the main light of the second pixel unit 102 is tilted in the direction of the wide viewing angle, so that the emission angle of the main light of the second pixel unit 102 matches the light receiving characteristics of the optical machine, ensuring that the optical machine can receive more wide-viewing angle light, thereby improving the relative brightness of the display device 10 at a wide viewing angle, reducing the color deviation value at a wide viewing angle, and improving the color deviation of the screen visual angle.

[0069] refer to Figure 13 The display area AA includes an offset linear change area AA1 along the first direction J. In the offset linear change area AA1, the offset shift changes linearly with the image height of the pixel unit.

[0070] like Figure 13-15 As shown, the display area AA of the display device 10 is provided with a plurality of pixel units 100 . The pixel unit 100 refers to a repeatable unit in the pixel structure. Several pixel units 100 are arranged in sequence. Specifically, several pixel units 100 can be arranged in sequence to form a matrix.

[0071] Each pixel unit 100 includes a plurality of light-emitting elements 13 , which are used to emit visible light to realize picture display.

[0072] The pixel unit 100 may include two light-emitting elements 13, or three, four, five or more light-emitting elements 13. The light-emitting colors of the light-emitting elements 13 in the pixel unit 100 are different, thereby realizing color display or color optimized display.

[0073] For example, a pixel unit 100 may typically include: a red light emitting element, a green light emitting element, and a blue light emitting element. For certain types of pixel units 100, they may also include: a white light emitting element, but are not limited thereto.

[0074] It should be noted that the light emitting element 13 may be an organic light emitting diode or an inorganic light emitting diode, etc., which is not specifically limited in the embodiment of the present invention.

[0075] like Figure 13-15 As shown, each pixel unit includes multiple sub-pixel units, each of which includes a light-emitting element 13 and a light-emitting adjustment unit 24 located on the light-emitting side of the light-emitting element 13. The light-emitting adjustment unit 24 is arranged in a one-to-one correspondence with the light-emitting element 13. The offset shift of multiple sub-pixel units in the same pixel unit is the same.

[0076] In addition, the shape of the light emitting element 13 in the pixel unit 100 can be designed according to different pixel arrangements. For example, the shape of the light emitting element 13 can be hexagonal, circular, or elliptical. Figure 13 and Figure 14 The light emitting element 13 is described as a rectangle as an example, but the invention is not limited thereto.

[0077] Continue to refer Figure 13-15 The first pixel unit 101 corresponds to a first principal optical axis CRA1, and the second pixel unit 102 corresponds to a second principal optical axis CRA2. The first principal optical axis CRA1 can be understood as the central principal optical axis of the display device, and is perpendicular to the display device 10. The second principal optical axis CRA2 can be understood as the edge principal optical axis of the display panel, and is inclined toward the edge of the display area AA. The angle between the second principal optical axis CRA2 of the second pixel unit 102 and the first principal optical axis CRA1 of the first pixel unit 101 is CRA.

[0078] Please refer to Figure 16 ,for Figure 16 Schematic diagram of the corresponding relationship between the principal optical axis angle CRA and the image height of a display device in a linear offset variation region provided by an embodiment of the present invention, as shown in FIG. Figure 16 As shown, in the offset linear variation region AA1, the angle between the second main optical axis CRA2 of the second pixel unit 102 as the i-th pixel unit and the first main optical axis CRA1 of the first pixel unit 101 is CRA i , the distance between the second pixel unit 102 and the center of the display area AA, i.e., the image height, is (i*d). The transformation relationship between the second principal optical axis CRA2 of the second pixel unit 102 as the i-th pixel unit and the image height satisfies: CRA i =k*(i*d).

[0079] Wherein, k is a proportional coefficient, which represents the slope of the principal optical axis angle CRA as the image height changes, and k is a constant not equal to 0. The inventors have found through research that the smaller the slope k is, the larger the virtual image spot formed is.

[0080] Figure 16 The diagram shows the relationship between the principal optical axis angle (CRA) and image height. The CRA at different image heights varies, determining the light output properties at that image height. The CRA is controlled by the offset (shfit). This offset (shift) is set between the dimming center of the pixel unit's light output adjustment unit and the corresponding light-emitting element's luminous center to determine the CRA of the pixel unit.

[0081] The offset of the i-th pixel unit Shift i Angle CRA with its principal optical axis i The relationship between Shift i =m*CRA i , that is, the offset of the i-th pixel unit Shift i The offset is directly proportional to the angle CRAi with the principal optical axis, m, where m is the slope of the change in the principal optical axis angle. m is a constant not equal to 0. m is an optical constant determined by the material, thickness, and refractive index of all film layers from the light-emitting element to the light-emitting surface. In a given display device, m is a fixed value.

[0082] According to the transformation relationship CRA of the main optical axis CRA of the i-th pixel unit with the image height i =k*(i*d), the offset of the i-th pixel unit Shift i The relationship between the angle between the main optical axis and the i =m*CRA i , the offset Shift corresponding to the second pixel unit 102 of the i-th pixel unit i =n*(i*d), we know that Shift i =n*(i*d)=m*CRA i =m*k*(i*d). n=k*m. In a certain display device, m is a constant value. Then, in a certain display device, the slope of the offset as the image height of the pixel unit changes is related to the k value.

[0083] Specifically, Figure 17 A schematic diagram of an optical path of a display device provided by an embodiment of the present invention is shown in FIG. Figure 17 As shown, in the second pixel unit 102 located at the edge of the display area AA, the reverse extension line of the light emitted by the second light-emitting element 132 at the edge away from the center of the display area AA through the second light-emitting adjustment unit 242 determines the boundary position of the virtual image spot 14.

[0084] It can be seen that when the k value is smaller, CRA i The smaller the value, the corresponding shifti The smaller, such as Figure 17 As shown, shift i The smaller the value, the further the reverse extension line of the light emitted from the second light-emitting element 132 of the i-th second pixel unit 102 at the edge away from the center of the display area AA through the second light-emitting adjustment unit 242 deviates away from the center of the display area AA, thereby causing the boundary position of the virtual image spot 14 to move away from the center of the display area AA, and the formed virtual image spot 14 becomes larger.

[0085] Continue to refer Figure 14 and Figure 15 The second light emitting element 132 includes a light emitting region 23 , which is a region that emits visible light.

[0086] Figure 19 A partial cross-sectional structural diagram of a display device provided by an embodiment of the present invention is shown in FIG. Figure 19 As shown, the light-emitting element 13 is illustrated as an organic light-emitting diode (OLED). The light-emitting element 13 includes an anode 133, a pixel definition layer 134, an organic light-emitting layer 135, and a cathode 136. The pixel definition layer 134 has an opening, and the organic light-emitting layer 135 is disposed in the opening of the pixel definition layer 134. Electrons and holes are injected from the cathode 136 and anode 133 into the organic light-emitting layer 135, respectively, forming excitons within the organic light-emitting layer 135 and exciting the molecules of the organic light-emitting material, thereby causing the organic light-emitting layer 135 to emit visible light. Since the visible light is emitted by the organic light-emitting layer 135, the area where the organic light-emitting layer 135 is located is the light-emitting area 23.

[0087] like Figure 17 and Figure 18 As shown, the length of the light emitting area 23 along the first direction J is x. If the boundary position of the virtual image spot falls exactly on the edge position of the display area AA, the maximum shift i The value is shift N , and shift N =x / 2. At this time, in the second pixel unit 102 located at the edge of the display area AA, the reverse extension line of the light emitted by the second light-emitting element 132 at the edge away from the center of the display area AA through the second light-emitting adjustment unit 242 extends in the vertical direction, that is, the boundary position of the virtual image spot is exactly located at the edge of the display area AA.

[0088] Furthermore, CRA i The maximum value of CRA N , CRA N =shift N / m=x / (2*m).

[0089] The maximum value of k is k max , k max =CRA N / (i*d)=CRA N / (N*d)=x / (2m*N*d).

[0090] It can be seen that when k=x / (2m*N*d), the boundary of the virtual image spot is exactly located at the edge of the display area AA. At this time, the virtual image spot coincides with the display area AA.

[0091] When k≤x / (2m*N*d), the boundary of the virtual image spot will be located outside the edge of the display area AA. In this case, the virtual image spot covers the entire display area AA, and the boundary of the virtual image spot cannot be seen in the display area AA, thereby making the display brightness of the display area AA more uniform and improving the display effect of the display device 10.

[0092] Continue to refer Figure 13 In this embodiment, an offset linear variation region AA1 is provided in the display area AA. The geometric center of the offset linear variation region AA1 coincides with the geometric center of the display area AA. As previously described, by setting k≤x / (2m*N*d) in the central region AA1, the virtual image spot formed by the offset linear variation region AA1 can cover the entire display area AA. Thus, no obvious virtual image spot boundary can be seen in the display area AA, making the display brightness of the display area AA more uniform, thereby improving the display effect of the display device 10.

[0093] It should be noted that the setting area of the offset linear change region AA1 can be set according to actual needs. It can be understood that the larger the area of the offset linear change region AA1, the more second pixel units 102 whose k values can be controlled to be less than or equal to x / (2m*N*d), so that the virtual image spots formed by more second pixel units 102 cover the entire display area AA, thereby helping to improve the brightness uniformity of the display area AA.

[0094] refer to Figure 13 Optionally, in another display device provided by an embodiment of the present invention, the display area further includes an offset nonlinear change area AA2, in which the offset shift changes nonlinearly with the image height of the pixel unit.

[0095] The changing trend of the offset shift in the offset linear changing region AA1 is the same as the changing trend of the offset shift in the offset nonlinear changing region AA2 , that is, the offset shift increases as the image height increases.

[0096] The slope of the offset shift in the linear offset change region AA1 is smaller than the slope of the offset shift in the nonlinear offset change region AA2. That is, the offset shift increases more slowly as the image height of the pixel unit increases in the linear offset change region AA1, while the offset shift increases more quickly as the image height of the pixel unit increases in the nonlinear offset change region AA2.

[0097] Please refer to Figure 13 In the nonlinear shift change area AA2 of the display area AA, along the first direction, from the center of the display area to the i-th pixel unit, the i-th pixel unit is a second pixel unit, and the offset corresponding to the second pixel unit is Shift i The following relationship is satisfied:

[0098] Shift i =A1*(i*d) 2 +B1*(i*d)+C1; where

[0099] A1, B1, and C1 are constants not equal to 0;

[0100] The i is greater than 0 and less than or equal to N, and N is the number of the pixel units along the first direction;

[0101] The d is the size of the pixel unit along the first direction.

[0102] or,

[0103] Shift i =A2*(i*d) 3 +B2*(i*d) 2 +C2*(i*d)+D2; where

[0104] A2, B2, C2, and D2 are constants not equal to 0;

[0105] The i is greater than 0 and less than or equal to N, and N is the number of the pixel units along the first direction;

[0106] The d is the size of the pixel unit along the first direction.

[0107] Figure 19 A schematic diagram of the corresponding relationship between the main optical axis angle and the image height of a display device in a nonlinear shift region provided by an embodiment of the present invention. i =m*CRA iAs shown in the figure, in the nonlinear change area of the offset, by setting the offset of the pixel unit to change nonlinearly with the change of image height, the main optical axis angle CRA can be made to change nonlinearly with the change of image height, which can ensure that the exit angle of the main light of the second pixel unit in the nonlinear change area AA2 of the offset is more matched with the light receiving characteristics of the optical machine, so that the optical machine can receive more wide-angle light, improve the relative brightness of the display device at a wide viewing angle, reduce the color deviation value at a wide viewing angle, and improve the color deviation of the screen visual angle.

[0108] In this embodiment, the nonlinear relationship between the offset of the i-th pixel unit and its image height can be:

[0109] Shift i =A1*(i*d) 2 +B1*(i*d)+C1,

[0110] Alternatively, Shift i =A2*(i*d) 3 +B2*(i*d) 2 +C2*(i*d)+D2

[0111] In one embodiment, A1=0.0665, B1=-1.1054, C1=5.323, that is, shift=0.0665*(i*d) 2 -1.1054*(i*d)+5.323.

[0112] In another embodiment, A2=-0.00211, B2=0.08317, C2=-0.75776, D2=2.5621, that is, shift=-0.00211*(i*d) 3 +0.08317*(i*d) 2 -0.75776*(i*d) 2 +2.5621.

[0113] It should be noted that A1, B1, C1, A2, B2, C2 and D2 are not limited to the above embodiments. The specific values of A1, B1, C1, A2, B2, C2 and D2 can be obtained by using a fitting method based on the CRA requirements at the maximum image height and related information at the edge of the central area AA1. The embodiment of the present invention does not specifically limit this.

[0114] Figure 20 A schematic diagram of the principal optical axis angle and the image height corresponding to a pixel unit of a display device provided by an embodiment of the present invention is shown in FIG. Figure 20 As shown, illustratively, the range of image height from 0 to 8 mm is set as the offset linear change area AA1, and the range of image height from 8 to 12 mm is set as the offset nonlinear change area AA2.

[0115] Along the first direction J, in the offset linear change area AA1, the offset changes linearly with the image height of the pixel unit, and the corresponding main optical axis angle CRA of the pixel unit also changes linearly with the image height; in the offset nonlinear change area AA2, the offset changes nonlinearly with the image height of the pixel unit, and the corresponding main optical axis angle CRA of the pixel unit also changes nonlinearly with the image height.

[0116] The variation trend of the offset in the offset linear variation region AA1 is the same as the variation trend of the offset in the offset nonlinear variation region AA2. In both cases, the offset gradually increases as the image height increases.

[0117] The slope of the offset change in the offset linear change area AA1 is smaller than the slope of the offset change in the offset nonlinear change area AA2, that is, in the offset linear change area AA1, as the image height increases, the offset increases more slowly, that is, the main optical axis angle CRA increases more slowly; in the offset nonlinear change area AA2, as the image height increases, the offset increases more quickly, that is, the main optical axis angle CRA increases more slowly.

[0118] The linear offset variation region AA1 primarily controls the speed of the shift, thereby controlling the size of the virtual image spot and preventing the virtual image from entering the screen. This avoids visible virtual image spot boundaries in the display region AA, resulting in more uniform display brightness within the display region AA and improving the display quality of the display device 10. The nonlinear offset variation region AA2 can be adjusted appropriately to meet the requirements of the optical engine. The angle of incidence of the main light from the second pixel unit 102 in the edge region AA2 is more closely aligned with the light receiving characteristics of the optical engine, ensuring that the optical engine receives more light at a wide viewing angle, improving the relative brightness of the display device at wide viewing angles, reducing chromatic aberration at wide viewing angles, and improving the color skew of the screen's visual field.

[0119] In this embodiment, along the first direction, the size h1 of the offset linear change area AA1 is set, and the size h2 of the offset nonlinear change area AA2 is set, and the ratio of h1 to h2 satisfies 1≤h1 / h2≤2, so that the area of the offset nonlinear change area AA2 is smaller and the area of the offset linear change area AA1 is larger.

[0120] It should be noted that the specific value of the ratio h1 / h2 of the distance h1 between the edge of the central area AA1 and the center of the display area AA and the distance h2 between the edge of the display area AA and the center of the display area AA can be set according to actual needs, and h1 / h2 is not limited to the above range.

[0121] Figure 21 A schematic diagram of a partial structure of a display device provided by an embodiment of the present invention is shown. Figure 22 for Figure 23Schematic diagram of the cross-sectional structure along the L-L' direction, as shown in Figure 23 and Figure 24 As shown, optionally, the light output adjustment unit 24 includes a color block 50 , and the color block 50 includes a first color block 51 and a second color block 52 . The first color block 51 serves as the first light output adjustment unit 241 , and the second color block 52 serves as the second light output adjustment unit 242 .

[0122] In this embodiment, the light output adjustment unit 24 can be a color block 50. In the first pixel unit 101, the first color block 51 among the multiple color blocks 50 serves as the first light output adjustment unit 241; in the second pixel unit 102, the second color block 52 among the multiple color blocks 50 serves as the second light output adjustment unit 242.

[0123] The color block 50 is located on the light-emitting side of the light-emitting element 13 and is used to filter the light emitted by the light-emitting element 13 to form colored output light, thereby achieving color display or color optimized display of the pixel unit.

[0124] Specifically, in the first pixel unit 101, the first color block 51 is disposed correspondingly to the first light-emitting element 131, so that the light emitted by the first light-emitting element 131 passes through the first color block 51 and is emitted. The first color block 51 is used to filter the light emitted by the first light-emitting element 131 to form colored emitted light. In the second pixel unit 102, the second color block 52 is disposed correspondingly to the second light-emitting element 132, so that the light emitted by the second light-emitting element 132 passes through the second color block 52 and is emitted. The second color block 52 is used to filter the light emitted by the second light-emitting element 132 to form colored emitted light.

[0125] The multiple color-resistance blocks 50 in one pixel unit have different colors, and the color-resistance blocks 50 of different colors cooperate with each other to realize color display or color-optimized display of the pixel unit.

[0126] Continue to refer Figure 21 and Figure 22 Adjacent color resist blocks 50 can be isolated by a black matrix 25 . The black matrix 25 is made of a light-absorbing material or a light-opaque material and is used to divide the light emitted from adjacent color resist blocks 50 .

[0127] In this embodiment, a color block 50 is provided as the light output adjustment unit 24 to implement the functions of the light output adjustment unit 24. That is, the first pixel unit 101 includes a plurality of first light-emitting elements 131 and a plurality of first color block 51. The plurality of first light-emitting elements 131 and the plurality of first color block 51 are arranged in a one-to-one correspondence. Light emitted by the first light-emitting element 131 is emitted through the corresponding first color block 51. The first light emission center 1310 of the first light-emitting element 131 coincides with the center of the corresponding first color block 51 (i.e., the first dimming center 2410).

[0128] The second pixel unit 102 includes a plurality of second light emitting elements 132 and a plurality of second color resist blocks 52 , and the plurality of second light emitting elements 132 and the plurality of second color resist blocks 52 are arranged in a one-to-one correspondence. Light emitted by the second light emitting element 132 is emitted through the corresponding second color resist block 52 . Along the direction from the first pixel unit 101 to the second pixel unit 102 (direction J as shown in the figure), the center of the second color block 52 (i.e., the second dimming center 2420) and the second luminous center 1320 of the corresponding second light-emitting element 132 are offset from each other, and the center of the second color block 52 is located on the side of the second luminous center 1320 away from the first luminous center 1310. In this configuration, the second color block 52 is offset toward the side away from the center of the display area AA, so that the main optical axis of the light beam emitted through the second color block 52 is tilted in the direction of a wide viewing angle, that is, the emission angle of the main light of the second pixel unit 102 is tilted in the direction of a wide viewing angle, so that the emission angle of the main light of the second pixel unit 102 matches the light receiving characteristics of the optical machine, ensuring that the optical machine can receive more wide-viewing angle light, thereby improving the relative brightness of the display device 10 at a wide viewing angle, reducing the color deviation value at a wide viewing angle, and improving the color deviation of the screen visual angle.

[0129] It should be noted that the technical solution regarding the light output adjustment unit 24 in any of the above embodiments can be applied to the color block 50, so that the color block 50 has the technical effect of the technical solution in any of the above embodiments. The structures that are the same or corresponding to the above embodiments and the explanation of terms are not repeated here.

[0130] Figure 23 A schematic diagram of a partial structure of a display device provided by an embodiment of the present invention is shown. Figure 24 for Figure 23 Schematic diagram of the cross-sectional structure along the M-M' direction, as shown in Figure 23 and Figure 24 As shown, optionally, the light output adjustment unit 24 includes a microlens 30 , and the microlens 30 includes a first microlens 31 and a second microlens 32 . The first microlens 31 serves as a first light output adjustment unit 241 , and the second microlens 32 serves as a second light output adjustment unit 242 .

[0131] In this embodiment, the light output adjustment unit 24 can be a microlens 30. In the first pixel unit 101, the first microlens 31 among the multiple microlenses 30 serves as the first light output adjustment unit 241; in the second pixel unit 102, the second microlens 32 among the multiple microlenses 30 serves as the second light output adjustment unit 242.

[0132] The microlens 30 is located on the light-emitting side of the light-emitting element 13 . The light beam emitted by the light-emitting element 13 is emitted through the microlens 30 . The microlens 30 is used to adjust the light-emitting direction of the pixel unit to achieve the effect of brightness enhancement.

[0133] Specifically, such as Figure 23 and Figure 24 As shown, in the first pixel unit 101, the first microlens 31 is arranged corresponding to the first light-emitting element 131, so that the light emitted by the first light-emitting element 131 is emitted through the first microlens 31. The first microlens 31 is used to adjust the light emission direction of the first light-emitting element 131 to achieve a brightening effect. In the second pixel unit 102, the second microlens 32 is arranged corresponding to the second light-emitting element 132, so that the light emitted by the second light-emitting element 132 is emitted through the second microlens 32. The second microlens 32 is used to adjust the light emission direction of the second light-emitting element 132 to achieve a brightening effect.

[0134] In this embodiment, a microlens 30 is provided as the light output adjustment unit 24 to implement the functions of the light output adjustment unit 24 described above. That is, the first pixel unit 101 includes a plurality of first light-emitting elements 131 and a plurality of first microlenses 31, and the plurality of first light-emitting elements 131 and the plurality of first microlenses 31 are provided in a one-to-one correspondence. Light emitted by a first light-emitting element 131 is emitted through the corresponding first microlens 31. The first light emission center 1310 of the first light-emitting element 131 coincides with the center of the corresponding first microlens 31 (i.e., the first dimming center 2410).

[0135] The second pixel unit 102 includes a plurality of second light emitting elements 132 and a plurality of second micro lenses 32 , and the plurality of second light emitting elements 132 and the plurality of second micro lenses 32 are arranged in a one-to-one correspondence. Light emitted by the second light emitting element 132 is emitted through the corresponding second micro lens 32 . Along the direction from the first pixel unit 101 to the second pixel unit 102 (direction J as shown in the figure), the center of the second microlens 32 (i.e., the second dimming center 2420) and the second luminous center 1320 of the corresponding second light-emitting element 132 are offset from each other, and the center of the second microlens 32 is located on the side of the second luminous center 1320 away from the first luminous center 1310. With this arrangement, the second microlens 32 is offset toward the side away from the center of the display area AA, so that the main optical axis of the light beam emitted through the second microlens 32 is tilted in the direction of the wide viewing angle, that is, the emission angle of the main light of the second pixel unit 102 is tilted in the direction of the wide viewing angle, so that the emission angle of the main light of the second pixel unit 102 matches the light receiving characteristics of the optical machine, ensuring that the optical machine can receive more wide-viewing angle light, thereby improving the relative brightness of the display device 10 at a wide viewing angle, reducing the color deviation value at a wide viewing angle, and improving the color deviation of the screen visual angle.

[0136] It should be noted that the technical solution regarding the light output adjustment unit 24 in any of the above embodiments can be applied to the microlens 30, so that the microlens 30 has the technical effects of the technical solution in any of the above embodiments. The structures and terminology that are the same as or corresponding to the above embodiments are not repeated here.

[0137] Figure 25 A partial structural diagram of another display device provided by an embodiment of the present invention is shown. Figure 26 for Figure 25 Schematic diagram of the cross-sectional structure along the P-P' direction, as shown in Figure 25 and Figure 26 As shown, optionally, the light output adjustment unit 24 includes a color block 50 and a microlens 30, the microlens 30 is located on the side of the color block 50 away from the light emitting element 13, the color block 50 includes a first color block 51 and a second color block 52, the microlens 30 includes a first microlens 31 and a second microlens 32, the first color block 51 and the first microlens 31 serve as the first light output adjustment unit 241, and the second color block 52 and the second microlens 32 serve as the second light output adjustment unit 242.

[0138] Among them, such as Figure 25 and Figure 26 As shown, the microlens 30 is located on the side of the color block 50 away from the light emitting element 13. The light beam emitted from the color block 50 is then emitted through the microlens 30. The microlens 30 is used to adjust the light emission direction of the light emitting element 13 to achieve the effect of brightness enhancement.

[0139] The specific configuration of the microlens 30 and the color resist block 50 may refer to the above embodiment and will not be described in detail here.

[0140] In this embodiment, the microlens 30 and the color block 50 are provided as the light-exiting adjustment unit 24 to realize the functions of the light-exiting adjustment unit 24 .

[0141] Specifically, the first pixel unit 101 includes a plurality of first light-emitting elements 131 and a plurality of first color-resistance blocks 51, and the plurality of first light-emitting elements 131 and the plurality of first color-resistance blocks 51 are arranged in a one-to-one correspondence. Light emitted by the first light-emitting elements 131 is emitted through the corresponding first color-resistance blocks 51. The first light-emitting center 1310 of the first light-emitting element 131 coincides with the center of the corresponding first color-resistance block 51 (i.e., the first dimming center 2410). The second pixel unit 102 includes a plurality of second light-emitting elements 132 and a plurality of second color-resistance blocks 52, and the plurality of second light-emitting elements 132 and the plurality of second color-resistance blocks 52 are arranged in a one-to-one correspondence. Light emitted by the second light-emitting elements 132 is emitted through the corresponding second color-resistance blocks 52. Along the direction from the first pixel unit 101 to the second pixel unit 102 (direction J as shown in the figure), the center of the second color filter block 52 (i.e., the second dimming center 2420) and the second light-emitting center 1320 of the corresponding second light-emitting element 132 are offset from each other, and the center of the second color filter block 52 is located on the side of the second light-emitting center 1320 away from the first light-emitting center 1310.

[0142] At the same time, the first pixel unit 101 includes a plurality of first light-emitting elements 131 and a plurality of first microlenses 31, and the plurality of first light-emitting elements 131 and the plurality of first microlenses 31 are arranged in a one-to-one correspondence. The light emitted by the first light-emitting element 131 is emitted through the corresponding first microlens 31. The first light-emitting center 1310 of the first light-emitting element 131 coincides with the center of the corresponding first microlens 31 (i.e., the first dimming center 2410). The second pixel unit 102 includes a plurality of second light-emitting elements 132 and a plurality of second microlenses 32, and the plurality of second light-emitting elements 132 and the plurality of second microlenses 32 are arranged in a one-to-one correspondence. The light emitted by the second light-emitting element 132 is emitted through the corresponding second microlens 32. Along the direction from the first pixel unit 101 to the second pixel unit 102 (direction J as shown in the figure), the center of the second microlens 32 (i.e., the second dimming center 2420) and the second luminous center 1320 of the corresponding second light-emitting element 132 are offset from each other, and the center of the second microlens 32 is located on the side of the second luminous center 1320 away from the first luminous center 1310.

[0143] Among them, along the direction from the first pixel unit 101 to the second pixel unit 102 (direction J as shown in the figure), by setting the second color block 52 and the second microlens 32 in the second pixel unit 102 to be offset toward the side away from the center of the display area AA, the main optical axis of the light beam emitted through the second color block 52 and the second microlens 32 is tilted toward the direction of the wide viewing angle, that is, the emission angle of the main light of the second pixel unit 102 is tilted toward the direction of the wide viewing angle, so that the emission angle of the main light of the second pixel unit 102 matches the light receiving characteristics of the optical machine, ensuring that the optical machine can receive more wide-viewing angle light, thereby improving the relative brightness of the display device 10 at a wide viewing angle, reducing the color deviation value at a wide viewing angle, and improving the color deviation of the screen visual angle.

[0144] It should be noted that Figure 23-26 In the figure, the bottom surface of the microlens 30 is circular as an example. In other embodiments, the shape of the microlens 30 can also be other shapes, and is not limited to a semi-ellipsoidal, hemispherical or spherical cap shape with a circular or elliptical bottom surface.

[0145] In addition, the display device provided by the embodiment of the present invention may further include other film layers located between the light-emitting element 13 and the light output adjustment unit 24, and may also include other film layers located between the microlens 30 and the color resist block 50, which are not shown in the figure. Those skilled in the art may set other functional film layers according to actual needs.

[0146] Furthermore, the light-emitting elements 13 in the pixel unit 100 are first color light-emitting elements, second color light-emitting elements, and third color light-emitting elements; wherein the first color light-emitting elements, the second color light-emitting elements, and the third color light-emitting elements can all be white light-emitting elements, and the white light output is filtered by the color block 50 to achieve color display. By setting the first color light-emitting elements, the second color light-emitting elements, and the third color light-emitting elements in the pixel unit 100 to only include white light-emitting elements, the setting method of the light-emitting elements can be simplified. In other embodiments, the first color light-emitting element in the pixel unit 100 can be a red light-emitting element, the second color light-emitting element can be a green light-emitting element, and the third color light-emitting element can be a blue light-emitting element, that is, color display is achieved by color light-emitting elements. Setting the light-emitting elements directly as color light-emitting elements can achieve higher color purity, ensuring that the display device has a good display effect.

[0147] Figure 27A schematic diagram of a near-eye display device provided in an embodiment of the present invention, wherein the near-eye display device includes a display device as described in any of the above embodiments. The near-eye display device provided in an embodiment of the present invention can be an electronic display device such as virtual reality (VR) or augmented reality (AR), and the embodiment of the present invention is not limited thereto. Optionally, the display device is a silicon-based OLED microdisplay device.

[0148] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A display device, characterized in that: The display area includes a plurality of pixel units, each pixel unit includes a plurality of light-emitting elements and a plurality of light-emitting adjustment units located on the light-emitting sides of the plurality of light-emitting elements, and the plurality of light-emitting adjustment units are arranged in a one-to-one correspondence with the plurality of light-emitting elements; The pixel unit includes a first pixel unit and a second pixel unit, the first pixel unit is located at the center of the display area, and the second pixel unit is located on a side of the first pixel unit close to the edge of the display area; The light-emitting element in the first pixel unit is a first light-emitting element, the light-emitting adjustment unit in the first pixel unit is a first light-emitting adjustment unit, the first light-emitting element includes a first light-emitting center, the first light-emitting adjustment unit includes a first dimming center, and the first light-emitting center of the first light-emitting element and the first dimming center of the first light-emitting adjustment unit corresponding thereto coincide with each other; The light-emitting element in the second pixel unit is a second light-emitting element, the light-emitting adjustment unit in the second pixel unit is a second light-emitting adjustment unit, the second light-emitting element includes a second light-emitting center, and the second light-emitting adjustment unit includes a second dimming center; along the first direction, the second dimming center of the second light-emitting adjustment unit and the second light-emitting center of the second light-emitting element corresponding thereto are offset from each other and there is an offset, and the second dimming center is located on a side of the second light-emitting center away from the first light-emitting center; The first direction is a direction from the first pixel unit to the second pixel unit; The display area includes an offset linear change area, in which the offset changes linearly with the image height of the pixel unit; In the linear shift region, along the first direction, the shift from the center of the display area to the i-th pixel unit is Shift i =n*(i*d), the offset of the i-th pixel unit Shift i Angle CRA with its principal optical axis i The relationship between Shift i =m*CRA i , the main optical axis angle CRA of the i-th pixel unit i =k*(i*d), where The i is greater than 0 and less than or equal to N, and N is the number of the pixel units along the first direction; d is the size of the pixel unit along the first direction; n is the slope of the offset as the image height of the pixel unit changes, and n is a constant not equal to 0; k is the slope of the principal optical axis angle as the image height changes, and k is a constant not equal to 0; m is the slope of the change in the offset with the angle between the main optical axis and m is a constant not equal to 0; In the first direction, the size of the light emitting area is x; The k≤x / (2m*N*d).

2. The display device according to claim 1, wherein In the first direction, the size of the light emitting area is x; The offset is ≤ x / 2.

3. The display device according to claim 1, wherein The display area further includes an offset nonlinear change area, in which the offset changes nonlinearly as the image height of the pixel unit changes.

4. The display device according to claim 3, wherein: A changing trend of the offset in the offset linear changing region is the same as a changing trend of the offset in the offset nonlinear changing region.

5. The display device according to claim 3, wherein The change slope of the offset in the offset linear change region is smaller than the change slope of the offset in the offset nonlinear change region.

6. The display device according to claim 3, wherein: In the nonlinear shift change region, along the first direction, from the center of the display area to the i-th pixel unit, the i-th pixel unit is a second pixel unit, and the offset Shift corresponding to the second pixel unit is i The following relationship is satisfied: Shift i =A1*(i*d) 2 +B1*(i*d)+C1; wherein A1, B1, and C1 are constants not equal to 0.

7. The display device according to claim 6, wherein: The A1 is 0.0665, the B1 is -1.1054, and the C1 is 5.

323.

8. The display device according to claim 3, wherein In the offset nonlinear change region, along the first direction, from the center of the display area to the i-th pixel unit, the i-th pixel unit is a second pixel unit, and the offset Shift corresponding to the second pixel unit is i The following relationship is satisfied: shift=A2*(i*d) 3 +B2*(i*d) 2 +C2*(i*d)+D2; wherein, A2, B2, C2, D2 is a constant not equal to 0.

9. The display device according to claim 8, wherein The A2 is -0.00211, the B2 is 0.08317, the C2 is -0.75776, and the D2 is 2.5621.

10. The display device according to claim 3, wherein Along the first direction, from the center of the display area to the edge of the display area, the size of the linear offset change area is h1, and the size of the nonlinear offset change area is h2, where 1≤h1 / h2≤2.

11. The display device according to claim 3, wherein The offset nonlinear change region is arranged around the offset linear change region.

12. The display device according to claim 1, wherein Each of the pixel units includes a plurality of sub-pixel units, and the offsets of the plurality of sub-pixel units of the same pixel unit are the same.

13. The display device according to claim 1, wherein The light output adjustment unit includes a color block; The color block includes a first color block and a second color block, the first color block serves as the first light output adjustment unit, and the second color block serves as the second light output adjustment unit.

14. The display device according to claim 1, wherein The light output adjustment unit includes a micro lens; The microlens includes a first microlens and a second microlens, the first microlens serves as the first light output adjustment unit, and the second microlens serves as the second light output adjustment unit.

15. The display device according to claim 1, wherein The light output adjustment unit includes a color block and a micro lens; The micro lens is located on a side of the color resist block away from the light emitting element; The color block includes a first color block and a second color block, the microlens includes a first microlens and a second microlens, the first color block and the first microlens serve as the first light output adjustment unit, and the second color block and the second microlens serve as the second light output adjustment unit.

16. A near-eye display device, characterized in that: The device comprises the display device according to any one of claims 1 to 15.

17. The near-eye display device according to claim 16, wherein: The display device is a silicon-based OLED micro display device.

Images