Display panel and display device

Abstract

The invention provides a display panel and a display device.The display panel comprises a display module and a light deflection assembly, and the display module comprises a plurality of sub-pixels arranged in an array and is used for providing an image source. The light deflection assembly comprises a plurality of light deflection units, and each light deflection unit covers at least one sub-pixel in the thickness direction of the display panel. The light deflection unit is configured to deflect emergent light of the corresponding sub-pixel to a preset emergent direction; at a preset observation distance, a visual area is formed by a light field area limited by a preset emergent direction; at least part of emergent light rays of the light deflection units form the same visual area; the emergent directions of emergent light rays of the same light deflection unit corresponding to the same visual area are the same; the emergent directions of emergent light rays of any two adjacent light deflection units are different. Through differentiated design of the light deflection units, convergence-adjustment conflicts are effectively relieved, and 3D display uniformity and comfort are improved.

Description

Technical Field

[0001] This invention relates to the field of display manufacturing technology, and more particularly to a display panel and a display device. Background Technology

[0002] 3D display technology, based on the principle of binocular parallax, provides slightly different images to the left and right eyes, allowing the viewer's brain to fuse them and create stereoscopic vision. However, this technology has an inherent physiological conflict: the vergence-accommodation conflict. The viewer's eyes converge based on image parallax to determine depth, but the lens of each eye needs to adjust its focus according to the actual position of the light source. When the virtual depth displayed by the parallax image does not match the physical position of the actual light source, the focusing signal received by the brain does not match the convergence signal, easily leading to visual fatigue, dizziness, and other discomfort.

[0003] In conventional panels, prism arrays are typically used to achieve multi-view 3D displays. In this scheme, although light from a single sub-pixel is refracted by the prism, the emitted light still has a certain divergence angle (approximately 5 degrees). This divergence angle allows the human eye to perceive that the light does not originate from infinity, but rather from the surface of the prism. Viewers unconsciously use this focusing cue to judge that the image is located in the prism plane, while the virtual depth that the 3D image content is meant to express may be in another location, thus exacerbating the convergence-accommodation conflict and affecting viewing comfort.

[0004] Furthermore, in a regularly arranged prism array, if the light emission direction of adjacent prism units is designed to be consistent, it may create "dark areas" or "dark lines" with uneven light field distribution in space, resulting in decreased brightness in certain positions and affecting the uniformity and overall effect of 3D display.

[0005] Therefore, how to effectively alleviate convergence-accommodation conflict and improve the uniformity of display brightness without affecting the stereoscopic display effect is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] Based on this, the present invention provides a display panel and a display device that, by optimizing the light deflection unit, effectively alleviates convergence-accommodation conflict and improves 3D display uniformity and comfort without affecting the stereoscopic display effect.

[0007] In a first aspect, embodiments of this application provide a display panel, including:

[0008] The display module includes multiple sub-pixels arranged in an array to provide an image source;

[0009] A light deflection assembly is disposed on the light-emitting side of the display module, including multiple light deflection units;

[0010] Along the thickness direction of the display panel, each of the light deflection units covers at least one of the sub-pixels;

[0011] The light deflection unit is configured to: deflect the emitted light rays of the corresponding sub-pixel to a preset emission direction; at a preset viewing distance, the light field area defined by the preset emission direction constitutes a viewing area; wherein the image source light emitted by the display module is a collimated light ray; and / or, the preset emission direction is a parallel light direction;

[0012] At least some of the light-emitting light rays from the optical deflecting units constitute the same viewing area; the light rays emitted from the same optical deflecting unit corresponding to the same viewing area have the same emission direction; and the light rays emitted from any two adjacent optical deflecting units have different emission directions.

[0013] Based on the same inventive concept, this application also provides a display device, including the display panel provided in the first aspect, and further including: a collimated backlight module, disposed on the non-light-emitting side of the display module, for providing collimated backlight to the display module.

[0014] This invention discloses a display panel, including a display module and a light deflection assembly disposed on the light-emitting side of the display module. The display module includes a plurality of sub-pixels arranged in an array for providing an image source. The light deflection assembly includes a plurality of light deflection units, each covering at least one sub-pixel along the thickness direction of the display panel. The light deflection units are configured to deflect the emitted light rays of the corresponding sub-pixel to a preset emission direction; at a preset viewing distance, a light field region defined by the preset emission direction constitutes a viewing area; the emitted light rays of at least a portion of the light deflection units constitute the same viewing area; the emitted light rays of the same light deflection unit corresponding to the same viewing area have the same emission direction; the emitted light rays of any two adjacent light deflection units have different emission directions. By designing the light deflection units differently, convergence-accommodation conflict is effectively alleviated without affecting the stereoscopic display effect, and the uniformity and comfort of 3D display are improved. Attached Figure Description

[0015] Figure 1 This is a top view schematic diagram of a display panel provided in an embodiment of this application;

[0016] Figure 2 for Figure 1 A cross-sectional schematic diagram of a display panel provided along the AA' direction;

[0017] Figure 3 for Figure 1 A cross-sectional schematic diagram of a display panel provided along the BB' direction;

[0018] Figure 4 for Figure 1 A cross-sectional schematic diagram of another display panel provided along the AA' direction;

[0019] Figure 5 for Figure 1 A cross-sectional schematic diagram of another display panel provided along the CC' direction;

[0020] Figure 6 A top view schematic diagram of another display panel provided in an embodiment of this application;

[0021] Figure 7 A top view schematic diagram of another display panel provided in an embodiment of this application;

[0022] Figure 8 A cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0023] Figure 9 This is a top view schematic diagram of a display module provided in an embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 110. Display module; 120. Optical deflection assembly; 130. Viewing area; 111. Subpixel; 121. Optical deflection unit;

[0026] 1201, First optical deflection unit; 1202, Second optical deflection unit; 1203, Third optical deflection unit; 1204, Fourth optical deflection unit;

[0027] M1, first optical section; M2, third optical section; M3, third optical section; M4, fourth optical section. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the present application and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present application are shown in the drawings, not the entire structure. Various modifications and variations can be made to the present application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, the present application is intended to cover modifications and variations of the present application that fall within the scope of the technical solutions claimed in the corresponding claims and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0029] Based on this, embodiments of the present invention provide a display panel, which includes a display module and a light deflection assembly disposed on the light-emitting side of the display module. The display module includes a plurality of sub-pixels arranged in an array for providing an image source. The light deflection assembly includes a plurality of light deflection units, each light deflection unit covering at least one sub-pixel along the thickness direction of the display panel. The light deflection units are configured to deflect the emitted light rays of the corresponding sub-pixel to a preset emission direction; at a preset viewing distance, the light field region defined by the preset emission direction constitutes a viewing area; wherein the image source light rays emitted by the display module are collimated light rays; and / or, the preset emission direction is a parallel light direction; the emitted light rays of at least a portion of the light deflection units constitute the same viewing area; the emitted light rays of the same light deflection unit corresponding to the same viewing area have the same emission direction; the emitted light rays of any two adjacent light deflection units have different emission directions.

[0030] By adopting the above technical solution, the present invention optimizes the light deflection unit on the light-emitting side of the display module so that the emitted light rays of the sub-pixels corresponding to the same light deflection unit are projected into a defined light field area according to a preset emission direction to form a viewing area; at least some of the emitted light rays of the light deflection units constitute the same viewing area, and the emitted light rays of the single light deflection units corresponding to the same viewing area have the same emission direction. The light deflection component consistently deflects the light rays emitted by the sub-pixels it covers and which finally enter the human eye into parallel light or highly collimated light rays. Since parallel light cannot provide effective focusing depth cues for the human eye, viewers will mainly rely on binocular parallax to judge the depth of 3D images. This avoids the convergence-accommodation conflict caused by the difference between the depth perception judged by binocular parallax and the depth perception formed by monocular focusing on the image, thus improving viewing comfort. Furthermore, since a viewing area can correspond to multiple light deflection units, this application further differentiates at least two of the multiple light deflection units to break the regular arrangement and introduces slight light scattering into the light emitted from the light deflection units. This results in slight differences in the emission directions of multiple light deflection units directed towards the same viewing area, making the light field reaching the same viewing area more uniformly distributed in space. This effectively fills the dark areas or dark lines that may be generated by the edges of regular light deflection units, thereby improving the overall brightness and brightness uniformity of the 3D display.

[0031] The above is the core idea of ​​this invention. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0032] Figure 1 This is a top view schematic diagram of a display panel provided in an embodiment of this application. Figure 2 for Figure 1A cross-sectional schematic diagram of a display panel provided in the AA' direction, for reference. Figure 1 and Figure 2 The display panel 100 provided in this application embodiment includes a display module 110 and a light deflection component 120 disposed on the light-emitting side of the display module 110. The display module 110 includes a plurality of sub-pixels 111 arranged in an array for providing an image source. The sub-pixels 111 can be pixel units in a Liquid Crystal Display (LCD) panel, or pixel units in a self-emissive Organic Light Emitting Diode (OLED) display panel, etc., and this application embodiment is not limited thereto. The image source light emitted from the display module 110 is collimated light; and / or, the preset emission direction is a parallel light direction. Specifically, the display module 110 can be a self-emissive display module such as an OLED, which requires an additional collimation film or structure to achieve light collimation. It can also be an LCD module, with collimated backlight provided by an external backlight source.

[0033] The light deflection assembly 120 includes a plurality of light deflection units 121. Along the thickness direction of the display surface 200 ( Figure 2 (As shown in the Z-direction), each light deflection unit 121 covers at least one sub-pixel 111. Typically, one light deflection unit 121 covers multiple sub-pixels 111, and the set of these sub-pixels 111 can be called a "Mega pixel". The light deflection unit 121 is configured to deflect the emitted light from the corresponding sub-pixel 111 to a preset emission direction. It can also be understood that the core function of the light deflection unit 121 is to deflect the light emitted from the sub-pixels 111 it covers to one or more preset emission directions.

[0034] Combination Figure 2 At a preset viewing distance L, a light field region defined by a preset emission direction constitutes a viewing zone 130. Specifically, taking a single eye of the observer as an example, at a preset viewing distance L (e.g., the observer's normal viewing distance), each preset emission direction will define a specific light field region in space, which is called a viewing zone 130. The viewing zone 130 is the area for one of the viewer's eyes (e.g., pupil 140) to receive image light. Furthermore, based on the position and arrangement of the sub-pixels 111, the light deflection unit 121 can also deflect the light emitted by the sub-pixels 111 it covers to multiple preset emission directions, forming multiple viewing zones, as shown in viewing zone 130a, which will not be shown individually in this application. Figure 3The following description uses only the visual region 130 corresponding to a single eye as an example. Further, the emitted rays from at least a portion of the light-deflecting units 121 in the light-deflecting assembly 120 constitute the same visual region. The emitted rays from the same light-deflecting unit 121 corresponding to the same visual region have the same emission direction; the emitted rays from any two adjacent light-deflecting units 121 have different emission directions. Specifically, please refer to... Figure 2 The light rays in the same viewing area 130 can be provided by multiple light deflection units 121, and the emission directions of the light rays emitted by a single light deflection unit 121 corresponding to the same viewing area 130 are the same. This application solves the problem of convergence-accommodation conflict by combining collimated light rays with light deflection components (such as faceted prisms) so that the light rays emitted by each sub-pixel that finally enter the human eye are parallel light rays with a preset emission angle or highly collimated light rays.

[0035] For example, in adjacent first light deflection units 1201 and second light deflection units 1202, the first light deflection unit 1201 deflects the light beam S1 emitted from its corresponding sub-pixel 111 and the second light deflection unit 1202 deflects the light beam S2 emitted from its corresponding sub-pixel 111 to the same viewing area 130. If a single light deflection unit 121 consistently deflects the light emitted from its covered sub-pixel 111 that ultimately enters the human eye into parallel light or highly collimated light (i.e., light beam S1 and light beam S2), the observer's two eyes are in different viewing areas. The human eye perceives the light as coming from infinity, rather than from the surface of the light deflection unit 121. Since parallel light or highly collimated light cannot provide effective focusing depth for the human eye, the viewer will mainly rely on binocular parallax to judge the depth of the 3D image, thereby avoiding the convergence-accommodation conflict caused by the difference between the depth sense judged by binocular parallax and the depth sense formed by monocular focusing on the image, thus improving viewing comfort.

[0036] One viewing area 130 can correspond to multiple optical deflection units 121. This application further differentiates at least two adjacent optical deflection units 121 within the same viewing area 130 or multiple viewing areas to overcome problems such as dark areas or dark lines at the edges of deflection units caused by regular arrangement. For example, the polarization directions of the first optical deflection unit 1201 and the second optical deflection unit 1202 projected onto the same viewing area are slightly differentiated. This introduces slight light scattering into beams S1 and S2, causing the outgoing directions of adjacent optical deflection units 121 to be non-parallel (e.g., ...). Figure 2 There is an angle b (b≠0) in the image, which makes the light field reaching the same viewing area 130 more evenly distributed in space. This can effectively fill the dark areas or dark lines that may be generated by the edges of regular structures, thereby improving the overall brightness and brightness uniformity of the 3D display.

[0037] Figure 3 for Figure 1 A cross-sectional schematic diagram of a display panel provided along the BB' direction, based on the above embodiment, with reference to... Figure 2 and Figure 3 The light deflection unit 121 includes multiple optical surfaces M, which are located on the light emission path of the sub-pixel 111 and are configured to deflect the emitted light of the corresponding sub-pixel 111 to a preset emission direction.

[0038] For example, the light deflection unit 121 is a microprism with multiple optical facets M on its surface. Each optical facet M corresponds to a specific emission direction. At a preset observation distance L, the optical facet M deflects the emitted light from the corresponding sub-pixel 111 to the preset emission direction. The light in the same viewing area 130 can be provided by multiple light deflection units 121. Specifically, at least some of the light deflection units 121 each have a portion of their optical facets that deflect the emitted light from their corresponding sub-pixel 111 to the same viewing area 130 (e.g., ...). Figure 2 (The left eye visual area).

[0039] As an example, combined Figure 2 and Figure 3 The light beam S1 deflected by the first optical section M1 in the first optical deflection unit 1201, the light beam S2 deflected by the third optical section M2 in the second optical deflection unit 1202, the light beam S3 deflected by the third optical section M3 in the third optical deflection unit 1203, and the light beam S4 deflected by the fourth optical section M4 in the fourth optical deflection unit 1204 are all deflected to the same viewing area 130.

[0040] Based on the above embodiments, combined with Figure 2 As shown, in the same optical deflection unit 121, the orientation angles of any two optical surfaces M are different. The orientation angle refers to the direction in which the optical surface deflects the emitted light from its corresponding sub-pixel after collimation, i.e., the preset emission direction. This orientation angle determines the direction in which the light emitted by that pixel enters the observer's pupil, and also determines the number of angularly separated viewing areas refracted by a single optical deflection unit 121. In this application, the orientation angles of any two optical surfaces M in the same optical deflection unit 121 are set to be different, so that the same optical deflection unit 121 can face at least two viewing areas (e.g., ...). Figure 2 and Figure 3 One viewing zone 130 and one viewing zone 130a) provide light to meet the viewing needs of users with multiple viewing angles and achieve a 3D display effect by forming binocular parallax.

[0041] Figure 4 for Figure 1 A cross-sectional schematic diagram of another display panel provided along the AA' direction, based on the above embodiment, with reference to... Figure 4Within the same optical deflection unit 121, the orientation difference angle α between two adjacent optical sections is greater than or equal to the observation area at a preset observation distance L. Figure 4 The angle of the light deflection unit 121 in the central viewing area 140).

[0042] The orientation difference angle refers to the angular difference between the directions / orientations of two objects (or the same object at different times). It can also be understood as how much rotation is required to align from one orientation to another. In this embodiment, the orientation difference angle specifically refers to the difference in orientation angle between at least two optical facets on an optical deflection unit 121. For example, refer to... Figure 4 The optical deflection unit 121 includes adjacent first optical surfaces M1 and fifth optical surfaces M5. The orientation angle of the first optical surface M1 is a1 (not shown in the figure), and the orientation angle of the fifth optical surface M5 is a5 (not shown in the figure). At a preset observation distance, the observation area ( Figure 4 The angle subtended by the central viewing area 140 relative to the light deflection unit 121 is C (not shown in the figure). The orientation difference angle between the first optical section M1 and the fifth optical section M5 is a = a1 - a5, that is, a > C.

[0043] By using the aforementioned lower limit constraint, this application can ensure that when the pupil of the human eye is located within the viewing area 130 formed by a certain optical section (such as the first optical section M1), it can simultaneously receive light from the adjacent optical section (the fifth optical section M5) within the same light deflection unit 120. This can avoid display defects and ensure display integrity.

[0044] It's important to clarify that in glasses-free 3D display applications, the angle of divergence C can also be understood as the angle of divergence of the human eye's pupil. It's worth noting that the smaller the orientation difference angle α, the denser the viewing area becomes, resulting in clearer viewing; however, the orientation difference angle α must be greater than the pupil angle C to avoid signal crosstalk. If α is too large, it may lead to too few viewing areas or uneven display. Therefore, the value of the orientation difference angle α can be set reasonably based on the display effect.

[0045] Furthermore, this application sets the orientation difference angles of the two optical sections M on any two adjacent optical deflection units to be different.

[0046] Specifically, in this embodiment, the orientation difference angle refers to the difference in orientation angle between two adjacent optical deflection units 121, each having an optical cross-section. Figure 2 The difference in orientation angle between the first optical section M1 of the first optical deflection unit 1201 and the third optical section M2 of the second optical deflection unit 1202.

[0047] For example, combined Figure 2 and Figure 3 A single light deflection unit 121 that provides light to the same viewing area 130 has all optical surfaces corresponding to this viewing area (such as the light rays from the first optical surfaces M1, M2, M3, and M4) with the same exit direction (i.e., the light rays are parallel or highly collimated). However, any two light deflection units 121 that provide light to the same viewing area 130, such as the first optical surface M1 and the second optical surface M2, deflect the light beams S1 and S2 with different exit directions, and the third optical surface M3 and the fourth optical surface M4, deflect the light beams S3 and S4 with different exit directions. Here, b12 is the orientation difference angle between the first optical surface M1 and the third optical surface M2, b34 is the orientation difference angle between the third optical surface M3 and the fourth optical surface M4, and b12 ≠ b34. This application embodiment sets the orientation difference angles of the optical sections on adjacent light deflection units 121 corresponding to the same viewing area 130 to be different. This allows the light deflection units corresponding to adjacent Mega pixels to be set with slight differences, avoiding the problem of some areas in space having no image due to the consistent light output direction. This solves the problem of dark light at the edge of the prism caused by regular arrangement, and ultimately improves the uniformity of display brightness.

[0048] Based on the above embodiments, refer to Figure 4 Multiple optical deflection units 121 include adjacent first optical deflection unit 1201 and second optical deflection unit 1202. The first optical deflection unit 1201 includes a first optical section M1, and the second optical deflection unit 1202 includes a second optical section M2. The orientation difference angle b12 between the first optical section M1 and the second optical section M2 is less than L at a preset imaging distance, in the observation area (e.g., Figure 4 As shown in Figure 141), the minimum angle C1 between the first optical deflection unit 1201 and the second optical deflection unit 1202 is defined. It should be noted that in this embodiment, the first optical section M1 and the second optical section M2 can deflect the emitted light rays of their corresponding sub-pixels 111 to the same first viewing area 131. Alternatively, in other embodiments, the first optical section M1 and the second optical section M2 can deflect the emitted light rays of their corresponding sub-pixels 111 to different viewing areas. This embodiment does not impose any limitations. This application only uses the example of the first optical deflection unit 1201 and the second optical deflection unit 1202 jointly providing an image for the same first viewing area 131 as an example for illustrative purposes and is not intended to limit the scope of this application.

[0049] The orientation difference angle between two adjacent optical deflection units can be understood as the difference between pixels in the 3D image seen by the human eye at a certain position. Specifically, it represents the difference in the orientation angle of the emitted light rays from the sub-pixels corresponding to a certain orientation of the optical cross-section of two adjacent optical deflection units (prisms) after being deflected by that optical cross-section. Between two adjacent Mega pixels, the orientation difference angle between two adjacent optical deflection units is smaller than the angle between the system's conventional 3D imaging distance and the human eye's pupil.

[0050] It is important to emphasize that if the orientation difference angle is too large, exceeding the pupil's angle, light rays from different Mega pixels may not be able to enter the pupil simultaneously, resulting in missing image information or dark lines. This application, by constraining the upper limit (C1) of the orientation difference angle, ensures that light rays from two adjacent spatial locations (different Mega pixels), despite slight angular differences, can both be received by the pupil located within the first visual zone 131. In this way, multiple Mega pixels can work together to provide complete image information for the same eye, thereby constructing a high-resolution 3D image.

[0051] Optionally, the maximum value of the orientation difference angle between the first optical section M1 and the second optical section M2 is less than the minimum value of the orientation difference angle between two adjacent optical sections within the same optical deflection unit. Specifically, the orientation difference angle b12 of the first optical section M1 and the second optical section M2 is a1 - a2. Where a1 is the orientation angle of the first optical section M1 (not shown in the figure), and a2 is the orientation angle of the second optical section M2 (not shown in the figure). That is, the maximum value of b12 should be less than the minimum value of a, i.e., b12 < a. In other words, the angular difference between optical sections between adjacent optical deflection units is always less than the angular difference between optical sections within a single optical deflection unit. This design can prevent light rays from multiple sub-pixels from the same physical location (the same Mega pixel) from interfering with the same pupil, thereby ensuring the purity of the parallax image and improving the clarity of the 3D display.

[0052] Figure 5 for Figure 1 A cross-sectional schematic diagram of another display panel provided along the CC' direction, for reference. Figure 2 and Figure 5The plurality of light deflection units 121 also includes a third light deflection unit 1203 adjacent to the first light deflection unit 1201. The third light deflection unit 1203 includes a third optical section M3. The orientation difference angle b13 between the third optical section M3 and the first optical section M1 is not equal to the orientation difference angle b12 between the first optical section M1 and the second optical section M2, i.e., b13 ≠ b12. It should be noted that, in the embodiments of this application, the third optical section M3 is configured to deflect the emitted light of its corresponding sub-pixel 111 to the first viewing area 131, or, in other embodiments, the third optical section M3 is configured to deflect the emitted light of its corresponding sub-pixel 111 to other viewing areas. The embodiments of this application do not impose any limitations. This application only uses optical sections projected onto the same viewing area as examples for illustrative purposes and is not intended to limit the scope of this application. This can be understood as follows: the first light deflection unit 1201, the second light deflection unit 1202, and the third light deflection unit 1203, which are directed towards the same first viewing area 131, are adjacent to each other, and the orientation difference angles of their corresponding optical sections differ. Further, it can be understood that each of the light deflection units 121 has at least one optical section, and all these optical sections deflect the light from the sub-pixel to the same or different viewing areas. The orientation difference angles between two optical sections located on different light deflection units 121 differ.

[0053] This application differentiates the optical surfaces on multiple light deflection units 121 by using different optical surfaces on different light deflection units 121 to scatter light in a small way, thereby covering the edge of the viewing area, reducing problems such as dark areas and dark lines, and improving the brightness uniformity and display effect of 3D display.

[0054] Based on the above embodiments, continue to refer to Figure 1 In at least one arrangement direction of the optical deflection component 120 (e.g. Figure 1 In the X direction (as shown), the optical sections corresponding to the same viewing area in adjacent optical deflection units 121 are distributed non-uniformly in terms of their orientation difference angles.

[0055] In traditional uniform and regular designs, if the orientation difference angle b is a constant value, the light refraction patterns at the edges of adjacent light deflection components 120 (prism array) are completely consistent, easily forming a periodic light intensity distribution in space, producing dark areas or alternating bright and dark stripes (dark lines) at specific locations. This application sets the orientation difference angle b between any two adjacent light deflection units 120 deflected to the same or different viewing areas to a non-fixed value, such as in... Figure 1In the X and / or Y directions, the distribution of the orientation difference angle b between adjacent light deflection units 120 is non-uniform. By introducing the difference in b values ​​(non-uniform distribution), the light output direction is "jittered" or "scattered" at a microscopic level. Utilizing the minute angular difference in the deflected light rays from adjacent optical surfaces, the edge positions that might otherwise form dark areas can be covered and filled by scattered light rays from neighboring optical surfaces at slightly different angles. This effectively eliminates the dark areas and dark lines caused by regular arrangement, significantly improving the brightness uniformity of the entire 3D display image.

[0056] Based on the above embodiments, continue to refer to Figure 1 Uneven distribution includes distribution along at least one orientation (e.g., Figure 2 The light is randomly distributed along the X-direction. For example, taking the same viewing area 130 corresponding to the first optical deflection unit 1201, the fifth optical deflection unit 1205, and the sixth optical deflection unit 1206 as an example. Along... Figure 1 In the X-direction, the orientation difference angle between the optical sections corresponding to the first optical deflection unit 1201 and the second optical deflection unit 1202 is b12, the orientation difference angle between the optical sections corresponding to the second optical deflection unit 1202 and the fifth optical deflection unit 1205 is b25, and the orientation difference angle between the optical sections corresponding to the fifth optical deflection unit 1205 and the sixth optical deflection unit 1206 is b56, where b12 ≠ b25 ≠ b56. In some embodiments, this difference can also vary according to a certain functional law, or it can be randomly distributed, thereby breaking the original regular structural design.

[0057] Based on the above embodiments, refer to Figures 2-5 At a preset observation distance L, the light field angle corresponding to each viewing area is greater than or equal to the angle subtended by the light deflection unit 121 at the preset observation distance.

[0058] The observation area mainly includes the user's pupil area and the data collection camera.

[0059] This application designs the orientation angles of multiple optical surfaces on a single optical deflection unit 120 and the differences in orientation angles between adjacent optical deflection units to maximize the light field angle corresponding to each viewing area, satisfying the aforementioned angle relationship, thereby ensuring that each viewing area can completely cover the user's pupil area.

[0060] Based on the above embodiments, refer to Figures 2-5On the observation plane at a preset observation distance, the area of ​​each viewing zone is greater than or equal to the area of ​​the observation area. Typically, the size of each viewing zone is determined based on the preset observation distance and the pupil diameter. The pupil diameter is typically around 4 mm. Based on a known observation distance, this application adjusts the orientation angles of multiple optical sections of a single optical deflection unit 120 and the difference in orientation angles between optical sections of adjacent optical deflection units on the expected observation plane, so that the area of ​​the viewing zone on the focal plane at the preset observation distance is greater than the pupil area (>4 mm). That is, a viewing zone is set in an area greater than 4 mm in diameter, and each viewing zone corresponds to an optical section M on an optical deflection unit 120.

[0061] Figure 6 This is a top view schematic diagram of another display panel provided in an embodiment of this application. Based on the above embodiment, refer to... Figure 1 and Figure 6 The orthographic projection shape of the light-emitting surface of the light-deflecting unit 121 on the display module 110 is rectangular, and multiple light-deflecting units 121 are arranged in an array and in contact with each other. By arranging multiple light-deflecting units 121 closely adjacent to each other in an array, matching the array arrangement of the sub-pixels 111, the light emitted by the composite pixel (Mega pixel) composed of multiple sub-pixels is uniformly guided to the predetermined viewing area, thereby effectively improving the brightness uniformity of the display panel in each viewing area.

[0062] Based on the above embodiments, refer to Figure 1 and Figure 6 The display module 110 includes a first array direction (as shown in the Y direction); the light deflection unit 121 has a first edge 121a, and the angle between the first edge 121a and the first array direction is within a certain range. The angle is 0° to 90°. This is achieved by setting the edges of the light deflection unit 121 to be parallel to or at a certain angle to the array arrangement direction of the sub-pixels 111. To meet different display needs. Especially when When the angle is greater than 0°, the light emitted by the sub-pixel 111 corresponding to the edge of the adjacent light deflection unit 121 can be deflected by the two light deflection units 121 together. This can also reduce the problem of dark areas and dark lines caused by the prism boundary and help improve the uniformity of display brightness.

[0063] Figure 7 This is a top view schematic diagram of another display panel provided in an embodiment of this application. Based on the above embodiment, refer to... Figure 6The display panel 100 also includes an eye-tracking module 150 and a rendering control module (not shown in the figure). The eye-tracking module 150 is used to acquire the viewer's eye position information in real time. The eye-tracking module 150 can be located in a non-display area of ​​the display panel 100, or in an area between adjacent sub-pixels within the display area, as long as it does not affect the normal display of the display panel; this embodiment does not impose any limitations. The rendering control module is electrically connected to the eye-tracking module and the display module 110, and is used to control the sub-pixels 111 in the display module 110 corresponding to the viewing area where the eye positions fall, based on the eye position information, to render and display the corresponding parallax image. The rendering control module can be integrated into the driver integrated circuit (IC) of the display panel 100, and the driver integrated circuit implements the display of the display panel, confirmation of eye position information, and image rendering.

[0064] For example, the display panel 100 can also be an eye-tracking system, which may include an eye-tracking module 150 and a rendering control module 160. The eye-tracking module 150 (e.g., an infrared camera) captures the spatial position information of the viewer's eyes in real time. The rendering control module 160 is electrically connected to the display module 110. It receives the eye position information from the eye-tracking module 150 and determines which viewing area 130 each eye is currently in. Then, the rendering control module 160 drives the display module 110 to illuminate or render only specific sub-pixels 111, so that the light emitted from them can enter the viewing area 130 after passing through the light deflection component 120, thereby presenting the correct parallax image for each eye. As the user moves, the system dynamically updates the rendered content to achieve a continuous, glasses-free 3D visual experience.

[0065] Among them, reference Figures 1-7 The light deflection unit includes at least one of a microprism array and a microlens array. The light deflection component in the embodiments of this application can take various forms such as a microprism array and a microlens array, offering flexible structure and easy integration with existing display modules (such as LCD and OLED) and backlight technologies, thus demonstrating good implementation prospects and compatibility.

[0066] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 8 A cross-sectional schematic diagram of a display device provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of a display device provided in an embodiment of the present invention. (In conjunction with...) Figure 8 and Figure 9As shown, the display device 200 includes any of the display panels 100 provided in the above embodiments and a collimating backlight module 4 disposed on the non-light-emitting side of the display module 110. The collimating backlight module 4 is used to provide collimating backlight to the display module 110. The display panel 100 can be an LCD display panel, and the display device 200 also has the beneficial effects of the display panel 100 in the above embodiments. The similarities can be understood by referring to the explanation of the display panel 100 above, and will not be repeated below.

[0067] To ensure that the light emitted from the sub-pixel 111 is highly oriented before entering the light deflection assembly 120, so as to be accurately deflected into parallel light or highly collimated light, the display device provided in this embodiment of the invention further includes a collimation backlight module 170 for the LCD. This module 170 is disposed on the non-light-emitting side of the display module 110, providing it with collimated or near-collimated backlight.

[0068] The display device 200 provided in this embodiment of the invention can be... Figure 9 The display screen shown can also be any electronic product with display function, including but not limited to the following categories: mobile phones, televisions, vehicle displays, laptops, desktop monitors, tablets, digital cameras, smart bracelets, smart glasses, industrial control equipment, medical displays, touch interactive terminals, etc. The embodiments of the present invention do not make any special limitations on this.

[0069] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein. Features of various embodiments of the present invention can be partially or wholly coupled or combined with each other, and can cooperate and be technically driven in various ways. Various obvious changes, readjustments, combinations, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, include The display module includes multiple sub-pixels arranged in an array to provide an image source; A light deflection assembly is disposed on the light-emitting side of the display module, including multiple light deflection units; Along the thickness direction of the display panel, each of the light deflection units covers at least one of the sub-pixels; The light deflection unit is configured to: deflect the emitted light rays of the corresponding sub-pixel to a preset emission direction; at a preset viewing distance, the light field area defined by the preset emission direction constitutes a viewing area; wherein the image source light emitted by the display module is a collimated light ray; and / or, the preset emission direction is a parallel light direction; At least some of the light-emitting light rays from the optical deflecting units constitute the same viewing area; the light rays emitted from the same optical deflecting unit corresponding to the same viewing area have the same emission direction; and the light rays emitted from any two adjacent optical deflecting units have different emission directions.

2. The display panel according to claim 1, characterized in that, The light deflection unit includes multiple optical facets, which are located on the light emission path of the sub-pixel and are configured to deflect the emitted light rays of the corresponding sub-pixel to a preset emission direction.

3. The display panel according to claim 2, characterized in that, Within the same optical deflection unit, the orientation angles of any two optical sections are different.

4. The display panel according to claim 2, characterized in that, Within the same optical deflection unit, the orientation difference angle between two adjacent optical sections is greater than or equal to the angle subtended by the observation area relative to the optical deflection unit at the preset observation distance.

5. The display panel according to claim 2, characterized in that, The plurality of optical deflection units include adjacent first optical deflection units and second optical deflection units, wherein the first optical deflection unit includes a first optical section and the second optical deflection unit includes a second optical section; The orientation difference angle between the first optical section and the second optical section is less than the minimum angle between the observation area and the first optical deflection unit and the second optical deflection unit at the preset imaging distance.

6. The display panel according to claim 5, characterized in that, The maximum value of the orientation difference angle between the first optical section and the second optical section is less than the minimum value of the orientation difference angle between two adjacent optical sections within the same optical deflection unit.

7. The display panel according to claim 5, characterized in that, The plurality of optical deflection units also include a third optical deflection unit adjacent to the first optical deflection unit, which includes a third optical section; The orientation difference angle between the third optical section and the first optical section is not equal to the orientation difference angle between the first optical section and the second optical section.

8. The display panel according to claim 2, characterized in that, In at least one arrangement direction of the optical deflection assembly, the optical sections corresponding to the same viewing area in adjacent optical deflection units are distributed non-uniformly in terms of their orientation difference angles.

9. The display panel according to claim 8, characterized in that, The non-uniform distribution includes a random distribution along at least one arrangement direction.

10. The display panel according to claim 1, characterized in that, At the preset observation distance, the light field angle corresponding to each viewing area is greater than or equal to the angle subtended by the viewing area on the light deflection unit at the preset observation distance.

11. The display panel according to claim 1, characterized in that, On the observation plane at the preset observation distance, the area of ​​each viewing area is greater than or equal to the area of ​​the observation area.

12. The display panel according to claim 1, characterized in that, Also includes: The eye-tracking module is used to acquire the viewer's eye position information in real time; The rendering control module is electrically connected to the human eye tracking module and the display module, and is used to control the sub-pixels in the display module corresponding to the visual area where the eyes fall, based on the eye position information, to render and display the corresponding parallax image.

13. The display panel according to claim 1, characterized in that, The orthographic projection shape of the light deflection unit on the light-emitting surface of the display module is rectangular; and the plurality of light deflection units are arranged in an array and in contact with each other.

14. The display panel according to claim 13, characterized in that, The display module includes a first array direction; The optical deflection unit has a first edge, and the angle between the first edge and the first array direction is in the range of 0° to 90°.

15. The display panel according to claim 1, characterized in that, Its features are, The optical deflection component includes at least one of a microprism array and a microlens array.

16. The display panel according to claim 4, characterized in that, The observation area includes the user's pupil area.

17. A display device, characterized in that, The display panel comprising any one of claims 1-16 further comprises: A collimated backlight module is disposed on the non-light-emitting side of the display module and is used to provide collimated backlight to the display module.

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