Display panel and 3D display device

Abstract

The invention provides a display panel and a 3D display device, the display panel comprises a display area and a non-display area, and the non-display area at least partially surrounds the display area. The display panel further comprises a substrate, a pixel unit, a dimming assembly and a positioning assembly. The plurality of pixel units are located on one side of the substrate. The dimming assembly is located on the side, away from the substrate, of the pixel unit and used for adjusting the light emitting angle of the pixel unit. The at least one positioning assembly is located in the non-display area. The positioning assembly comprises a shading calibration structure and at least one photosensitive element. The shading calibration structure and the dimming assembly are on the same layer and are fixed, and the photosensitive element is located between the substrate and the dimming assembly. In the thickness direction of the display panel, the shading calibration structure is at least partially overlapped with the photosensitive surface of the photosensitive element. The difference value between the incident light quantity of the ambient light shielded by the shading calibration structure and the reference incident light quantity is obtained through the photosensitive element, the fitting deviation is calculated, the calibration parameter corresponding to the fitting deviation is determined, and the display image is calibrated during display.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of display technology, and in particular to a display panel and a 3D display device. Background Art

[0002] 3D display technology, also known as stereoscopic display technology, can provide a display image with a visual sense of three-dimensionality, presence, and depth in a display panel, allowing the human eye to perceive a three-dimensional image of an objective scene.

[0003] Compared to traditional 3D display technology, which requires the use of glasses, naked-eye 3D display (three-dimensional display) technology has emerged and has become a trend in the development of 3D display technology. Naked-eye 3D technology can be divided into grating-type, prismatic-type, and multi-viewing angle backlight-type display technologies. These technologies mainly use a periodic distribution of light-isolating media to form a grating within the display screen, or use lenses to control the light output direction of different pixels, or design a backlight to direct the light output to each eye. These methods allow the viewer's left and right eyes to receive different light, thereby creating a visual difference and achieving a naked-eye three-dimensional visual experience.

[0004] However, at present, the display effect of naked-eye 3D display still has problems such as poor visual imaging effect. Summary of the Invention

[0005] Based on this, the present invention provides a display panel and a 3D display device, which solve the problem of poor image display effect during 3D display in existing displays.

[0006] In a first aspect, an embodiment of the present application provides a display panel, comprising a display area and a non-display area, wherein the non-display area at least partially surrounds the display area; the display panel further comprises:

[0007] substrate;

[0008] A plurality of pixel units are located on one side of the base substrate;

[0009] A dimming component, located on a side of the pixel unit away from the base substrate, and used to adjust the light output angle of the pixel unit;

[0010] At least one group of positioning components is located in the non-display area; the positioning components include a light-shielding calibration structure and at least one photosensitive element; the light-shielding calibration structure is on the same layer as the dimming component and is fixed, and the photosensitive element is located between the base substrate and the dimming component; along the thickness direction of the display panel, the light-shielding calibration structure at least partially overlaps with the photosensitive surface of the photosensitive element.

[0011] In a second aspect, an embodiment of the present application further provides a method for calculating the lamination deviation of a display panel, which is used to calculate the lamination deviation of the display panel described in the first aspect, comprising:

[0012] When the dimming component is pre-aligned and aligned with the display area, a reference amount of light incident on the photosensitive element when the photosensitive element is shielded by the light-shielding calibration structure is obtained;

[0013] After the dimming component is aligned and attached to the display area, the amount of incident light received by each photosensitive element is obtained;

[0014] Based on the difference between the amount of incident light received by each photosensitive element and the reference amount of incident light, the fitting deviation between the dimming component and the display area is calculated, and based on the fitting deviation, the calibration parameters of the display panel are determined.

[0015] The display panel provided in the embodiments of the present application comprises a positioning assembly disposed in a non-display area, the positioning assembly comprising a light-shielding calibration structure and at least one photosensitive element. After the dimming assembly is attached, the photosensitive element detects the difference between the amount of ambient light incident after being blocked by the light-shielding calibration structure and a baseline amount of ambient light incident, calculates the dimming assembly attachment deviation, and thereby determines calibration parameters for the display panel attachment deviation. The display image is calibrated during display on the display panel, achieving subtle adjustments to the displayed image and achieving a clear display. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a display panel provided by the prior art;

[0017] Figure 2 is a structural diagram of a display panel provided in an embodiment of the present application;

[0018] Figure 3 yes Figure 2 A schematic cross-sectional view of a display panel along the AA' direction;

[0019] Figure 4 yes Figure 2 Schematic diagram of a cross section of another display panel along the AA' direction

[0020] Figure 5 This is a schematic diagram of a top view of a positioning assembly provided by the present application;

[0021] Figure 6 is a structural diagram of another display panel provided in an embodiment of the present application;

[0022] Figure 7 This is a display schematic diagram of another display panel provided in an embodiment of the present application;

[0023] Figure 8 is a schematic diagram of a method for manufacturing a display panel provided in an embodiment of the present application;

[0024] Figure 9 3D display device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0026] Figure 1 This is a schematic diagram of the structure of a display panel provided by the prior art. Figure 1 A display panel 100 is provided in display technology. By attaching a prism 10 to its light-emitting side, the light-emitting directions of different pixels 11 are controlled, allowing the viewer's left and right eyes to receive different light rays, respectively, achieving a naked-eye three-dimensional visual experience. However, when the prism 10 is attached, there is a misalignment between the correspondence between the prism 10 and the underlying pixels, related to the relative position of the prism 10. This can cause the displayed images at viewing angles V1, V2, and V3 to appear blurred. This misalignment requires external calibration, which is a complex process.

[0027] One existing calibration method is to precisely align the prisms 10, record the alignment deviation for each prism 10, and further calculate the correspondence between the prisms 10 and the pixels 11. Another existing calibration method is to simply align the prisms 10 and then confirm the optimal calibration parameters by photographing a specific image of the display panel. However, this calibration process requires professional knowledge or specialized calibration equipment, and has problems such as high cost and long cycle time. Therefore, all of the above calibration methods are difficult to achieve fast and accurate alignment and calibration, and still have poor visual imaging effects, such as blurring, which affects the display effect of naked-eye 3D display.

[0028] Based on this, an embodiment of the present application provides a display panel, which includes a display area and a non-display area, and the non-display area at least partially surrounds the display area. The display panel also includes a substrate, a pixel unit, a dimming component and a positioning component. A plurality of pixel units are located on one side of the substrate. The dimming component is located on the side of the pixel unit away from the substrate, and is used to adjust the light output angle of the pixel unit. At least one group of positioning components is located in the non-display area, and the positioning component includes a light shading calibration structure and at least one photosensitive element. The light shading calibration structure is on the same layer as the dimming component and is fixed, and the photosensitive element is located between the substrate and the dimming component. Along the thickness direction of the display panel, the light shading calibration structure at least partially overlaps with the photosensitive surface of the photosensitive element.

[0029] Adopting the above-mentioned technical solution, the present application provides a positioning assembly in the non-display area, the positioning assembly including a light-shielding calibration structure and at least one photosensitive element. After the dimming assembly is attached, the photosensitive element detects the difference between the amount of ambient light entering after being blocked by the light-shielding calibration structure and the reference amount of ambient light entering. The dimming assembly's attachment deviation is calculated, thereby determining the calibration parameters for the display panel attachment deviation. The displayed image is calibrated when the display panel is displayed, achieving subtle adjustments to the displayed image and achieving a clear display.

[0030] The above is the core idea 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 accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0031] Figure 2 is a structural diagram of a display panel provided in an embodiment of the present application, Figure 3 yes Figure 2 A schematic cross-sectional view of a display panel in the AA' direction, see Figure 2 and Figure 3 The display panel 200 provided in the embodiment of the present application includes a display area AA and a non-display area NA, and the non-display area NA at least partially surrounds the display area AA. The display panel 200 also includes a base substrate 20, a pixel unit 30, a dimming component 40 and a group positioning component 50. A plurality of pixel units 30 are located on one side of the base substrate 20. The dimming component 40 is located on the side of the pixel unit 30 away from the base substrate 20, and is used to adjust the light output angle of the pixel unit 30. At least one group of positioning components 50 is located in the non-display area NA. The positioning component 50 includes a light shading calibration structure 51 and at least one photosensitive element 52. The light shading calibration structure 51 is in the same layer and fixed with the dimming component 40, and the photosensitive element 52 is located between the base substrate 20 and the dimming component 40. Along the thickness direction of the display panel 200, the light shading calibration structure 51 and the photosensitive surface of the photosensitive element 52 at least partially overlap.

[0032] In the prior art, the alignment accuracy of the light emitting surface of the pixel unit 30 affects the adjustment accuracy of the light emitting angle of the dimming component 40 and affects the display effect.

[0033] In an embodiment of the present application, by setting the positioning component 50 in the non-display area NA, it is composed of a light-shielding calibration structure 51 with the function of blocking external ambient light and a photosensitive element 52 with the ability to sense light flux. The light-shielding calibration structure 51 can be set on the same metal layer as the dimming component 40, or it can be a light-shielding film layer formed on the dimming component 40. The relative position of the light-shielding calibration structure 51 and the dimming component 40 is fixed, and is transferred together with the dimming component 40 when the dimming component 40 is aligned and fitted. The photosensitive element 52 is configured as a photodiode (Photodiode), a photoresistor (Photoresistor / LDR), a CMOS image sensor (CMOSImage Sensor), etc. When the relative positions of the light-shielding calibration structure 51 and the photosensitive element 52 partially overlap in the longitudinal direction, the light-shielding calibration structure 51 at least partially covers the photosensitive viewing angle of the photosensitive element 51, blocking the external incident ambient light within the angle range. When the portion of the photosensitive layer of the photosensitive element 52 that is not shielded by the light shielding calibration structure 51 is irradiated by ambient light from the display panel, the portion receives the amount of ambient light and generates an electrical signal that is transmitted to the control circuit of the display panel. The electrical signal may be a current signal or a voltage signal.

[0034] The control circuit of the display panel compares the electrical signals generated by the incident light intensity detected by each photosensitive element 52 with a pre-acquired reference incident light intensity, calculates the difference between the incident light intensity and the reference incident light intensity, and obtains the alignment deviation of the dimming component 40. The alignment deviation of the dimming component 40 includes the offset direction, offset amount, and rotation angle deviation of the dimming component 40. The calibration parameter of the display panel is the driving voltage or driving current of the pixel unit 30.

[0035] For example, the control circuit of the display panel adjusts the driving voltage of the pixel unit 30, the luminous brightness and the luminous angle of the pixel unit 30, etc. according to the fitting deviation of the dimming component 40, so as to achieve real-time compensation of the display image, realize 3D display image rendering, and clear display.

[0036] The ambient light outside the display panel may be a standard light source used for detection, and the parameters such as the incident angle, direction, and illumination intensity of the standard light source are determined.

[0037] In the embodiment of the present application, the control circuit of the display panel can be configured as an independent control circuit or as an integrated driver IC of the display panel. The photosensitive element 52 is connected to the control circuit, and the control circuit stores a control program for controlling the photosensitive element 52 and analyzing and processing the electrical signals transmitted by the photosensitive element 52.

[0038] The type of the display panel 200 includes an OLED, LED or LCD display panel, etc. The embodiment of the present application does not limit the type of the display panel.

[0039] In summary, the display panel provided by this application comprises a positioning assembly disposed in the non-display area, the positioning assembly comprising a light-shielding calibration structure and at least one photosensitive element. After the dimming assembly is attached, the photosensitive element detects the difference between the amount of ambient light entering after being blocked by the light-shielding calibration structure and the baseline amount of ambient light entering. The dimming assembly's attachment deviation is calculated, and calibration parameters for the display panel's attachment deviation are determined. The displayed image is then calibrated during display on the display panel, achieving subtle adjustments to the displayed image and a clear display.

[0040] Based on the above embodiments, Figure 3 The shading calibration structure 51 is fixed to the dimming component 40. As an example, the shading calibration structure 51 is encapsulated in the structure of the dimming component 40, forming an integral arrangement. This structural arrangement helps stabilize the relative position of the shading calibration structure 51 and the dimming component 40, and the displacement of the dimming component 40 is replaced by the displacement of the shading calibration structure 51.

[0041] Figure 4 yes Figure 2 A schematic cross-sectional view of another display panel in the AA' direction is provided. Based on the above embodiment, reference is made to FIG. Figure 4 The positioning assembly 50 further includes a collimating hole 53, which is located between the light shielding calibration structure 51 and the photosensitive element 52. Figure 4 In the middle Z direction), the collimating hole 53 at least partially overlaps with the light-shielding calibration structure 51 and the photosensitive surface of the photosensitive element 52.

[0042] In this embodiment, collimating apertures 53 are precision openings in light-shielding layer 60. Their size and shape are optimized to allow light at specific angles to pass through while filtering out scattered light at larger angles. This limits the angle of light sensing element 52, eliminates stray light interference, improves signal purity, and enhances edge contrast.

[0043] Exemplarily, the shape of the collimating hole 53 is circular, rectangular or a micron-sized slit, and the material around it is a highly light-absorbing material, such as black ink.

[0044] Based on the above embodiments, Figure 4 The display panel 200 further includes a light shielding layer 60 , which is located between the dimming component 40 and the photosensitive element 52 . The collimating hole 53 is located in the light shielding layer 60 .

[0045] In the embodiment of the present application, the dimming component 40 may produce non-ideal light scattering or light leakage. The light shielding layer 60 can absorb or reflect these stray lights to prevent them from directly irradiating the photosensitive element 52, thereby reducing noise, improving the signal-to-noise ratio, and allowing the photosensitive element 52 to only detect the target light signal.

[0046] For example, the light shielding layer 60 is made of a low reflectivity material, such as silicon oxide or metal chromium, to avoid secondary reflection. The light shielding layer 60 can be manufactured by processes such as photolithography or nanoimprinting.

[0047] As an example, combining Figure 2 and Figure 4 The display panel is composed of an array of multiple pixel units 30. Leakage may occur between and around the edges of these units, causing a whitened display or reduced contrast. The light-shielding layer 60 includes multiple black matrices (BMs). The BMs cover the gaps and edges between the pixel units 30 to absorb stray light, prevent crosstalk between adjacent pixel units 30, ensure color purity, and enhance display contrast.

[0048] Based on the above embodiments, Figure 4 The display panel 200 includes a liquid crystal display panel 200. The display panel 200 also includes a drive substrate 201, a liquid crystal layer 202, and a color filter substrate 203. The liquid crystal layer 202 is located between the drive substrate 201 and the color filter substrate 202. The photosensitive element 52 is located on the side of the drive substrate close to the liquid crystal layer, and the light shielding alignment structure 51 is located on the side of the color filter substrate 203 away from the liquid crystal layer 202.

[0049] In the embodiment of the present application, the photosensitive element 52 is embedded on the side of the driver substrate 201 closest to the liquid crystal layer 202, i.e., on the top surface of the driver substrate 201. This helps detect changes in backlight intensity after it passes through the liquid crystal layer 202, enabling automatic brightness adjustment of the display panel 200. Furthermore, it cooperates with the light-shielding calibration structure 51 to detect and calibrate optical alignment deviations of the dimming component 40. Furthermore, the direct integration of the photosensitive element 52 into the driver substrate 201 saves space and avoids the need for additional packaging layers.

[0050] The driving substrate 201 includes a pixel circuit ( Figure 4 The pixel circuit can be a 2T1C, 4T1C, 7T1C, 7T2C, 8T1C, 8T2C, or other circuit structure. The pixel circuit includes a plurality of thin film transistors (TFTs), storage capacitors, and metal wiring and other film layer structures (not shown in the drawings of the embodiments of this application). The liquid crystal layer 202 contains liquid crystal molecules, and the color filter substrate 203 is generally composed of multiple functional thin films, such as a glass substrate, a black matrix (BM), a color filter layer, an overcoat (OC), etc. The light-emitting principle and driving method of the liquid crystal display panel are not further described here.

[0051] On the basis of the above embodiments, continue to refer to Figure 2 The number of at least one group of positioning components 50 is greater than 3 and is distributed at different side positions of the dimming component 40.

[0052] In the embodiment of the present application, at least one set of photosensitive elements 52 is arranged at each edge (top, bottom, left, and right) of the display panel 200. As an example, for higher accuracy, at least three sets are evenly distributed across the entire screen. By having multiple sets of photosensitive elements 52 cover the entire screen, it is possible to detect deviations in different positions of the dimming component 40, avoiding the limitations of single-point detection.

[0053] Figure 5 This is a schematic diagram of a top view of a positioning assembly provided by the present application. Based on the above embodiment, Figure 5 Several feasible relative position relationships between the photosensitive element 52 and the light shielding calibration structure 51 are shown in FIG. Figure 5 In each group of positioning components 50 , the number of photosensitive elements 52 is an even number, and at least two photosensitive elements 52 are symmetrically arranged.

[0054] In the prior art, a single photosensitive element is easily affected by ambient light, circuit noise or mechanical errors, resulting in unstable measurement data.

[0055] The present application adopts a symmetrical arrangement, distributing two or more photosensitive elements 52 symmetrically, such as left-right, up-down or diagonally, so that data can be verified with each other. If one photosensitive element 52 is interfered with, the photosensitive element 52 in the symmetrical position can still provide reference data, thereby improving the system's anti-interference ability.

[0056] As an example, when the dimming assembly 40 is aligned, if one photosensitive element 52 detects an X-direction offset, the symmetrical photosensitive element 52 may provide reverse data for cross-verification.

[0057] For example, when some ambient light passes through the light-shielding calibration structure 51 and is projected onto the symmetrically arranged photosensitive elements 52, the edge position can be accurately calculated using the differential signal. For example, two symmetrical photosensitive elements 52 respectively detect the left and right edges of the light-shielding calibration structure 51. By comparing the changes in light signal intensity, the lateral offset ΔX can be accurately calculated. As an example, the differential calculation formula is:

[0058]

[0059] Among them, S1 and S2 are the light signals of symmetrically distributed photosensitive elements, and K is the calibration coefficient.

[0060] On the basis of the above embodiments, continue to refer to Figure 2 The alignment structure 51 includes a first side 51a and a second side 51b adjacent to each other. The first side 51a and the second side 51b intersect each other. Along the thickness direction of the display panel 200, at least one photosensitive element 52 at least partially overlaps the first side 51a and / or the second side 51b.

[0061] In the embodiment of the present application, the shape of the light-shielding calibration structure 51 is circular, polygonal, etc. Each positioning assembly 50 is equipped with a light-shielding calibration structure 51 , and the light-shielding calibration structure 51 has at least two sides perpendicular to each other.

[0062] As an example, a structure in which the first side 51a and the second side 51b are perpendicular to each other and form a right angle is used. At least one photosensitive element 52 is positioned below the right angle. Shadows cast by the vertical edges are used. At least one independent photosensitive element 52 is positioned below each shadow, completely covered by or tangent to the shadow. The photosensitive element 52 captures changes in ambient light intensity and calculates the position deviation of the dimming component 40.

[0063] For example, the extent to which shadows cover the photosensitive element 52 directly affects the strength of the electrical signal from the photosensitive element 52. The display panel's control circuitry receives and processes the electrical signal data from multiple photosensitive elements 52 to quantify the X / Y displacement of the dimming component 40. After integrating the data from multiple sensor groups, the control circuitry uses a stored data algorithm (e.g., the least squares method) to fit the overall translation (X / Y) and rotational angle deviation (Δθ) of the dimming component 40 for use in image calibration.

[0064] The present application can eliminate local errors and improve the calculation accuracy of offset and rotation angles through multi-point detection of the photosensitive element 52.

[0065] In an embodiment of the present application, the shading calibration structure 51 can also be laser cut or mirror polished to ensure sharp edges, such as edge roughness <1μm, reduce shadow blur, avoid ambient light divergence, and thus improve the photosensitivity accuracy of the photosensitive element 52.

[0066] Figure 6 is a structural diagram of another display panel provided in an embodiment of the present application. Figure 7 This is a display diagram of another display panel provided by an embodiment of the present application. Based on the above embodiment, reference is made to Figure 6 and Figure 7 The dimming component 40 includes a prism grating, which includes a plurality of grating units 41. The plurality of grating units 41 are arranged along a first direction X and extend along a second direction Y. The grating units 41 cover at least one pixel unit 30. The light shielding calibration structure 51 is located on at least one side of the edge of all grating units 41. The first direction X and the second direction Y intersect and are both parallel to the plane of the substrate 20.

[0067] In the embodiment of the present application, the grating unit 41 uses the effects of refraction and diffraction to split the light emitted by the pixel unit 30, forming light at different angles to reach the user's field of view, as shown in perspectives View1, View2, and View3. The grating unit 41 is set in a long strip shape, which can enhance the control of vertical light and achieve light diffusion or collimation. Each grating unit 41 covers at least one pixel unit 30 in the first direction X (horizontal), such as covering one RGB sub-pixel or a group of pixels, to ensure that the light regulation of the prism grating is strictly aligned with the pixel display to avoid moiré or uneven brightness.

[0068] Based on the above embodiments, Figure 2 The display panel 200 also includes a fingerprint sensor, a facial recognition sensor, and an ambient light sensor. The photosensitive element 52 multiplexes any one of these sensors. This application utilizes hardware multiplexing and time-sharing drive of the photosensitive element 52 to enable the same set of optical sensors to support multiple functions, achieving the design goals of high integration, low cost, and low power consumption.

[0069] Fingerprint recognition sensors use optical or ultrasonic sensors to detect fingerprint patterns through the screen. Facial recognition sensors use photosensitive elements to assist in detecting facial features or ambient light conditions for facial recognition. Ambient light sensors automatically detect ambient light intensity and adjust screen brightness and color temperature.

[0070] Based on the same inventive concept, the embodiment of the present application further provides a method for calculating the lamination deviation of a display panel, which is used to calculate the lamination deviation of the display panel 200 provided in the above embodiment. Figure 8 is a schematic diagram of a method for preparing a display panel provided in an embodiment of the present application, with reference to Figure 8 , the manufacturing method of the display panel 200 includes:

[0071] S101 , when the dimming component is pre-aligned, aligned, and bonded to the display area, obtaining a reference amount of incident light to the photosensitive element when shielded by a light-shielding calibration structure.

[0072] S102: After the dimming component is aligned and attached to the display area, the amount of incident light received by each photosensitive element is obtained.

[0073] S103 : Calculate the fitting deviation between the dimming component and the display area based on the difference between the incident light amount received by each photosensitive element and the reference incident light amount, and determine the calibration parameters of the display panel based on the fitting deviation.

[0074] As an example, when the light-emitting surfaces of the dimming component 40 and the pixel unit 30 are pre-aligned and bonded within a preset range, the external ambient light is shielded by the shading calibration structure 51, and the luminous flux of the external ambient light obtained by the photosensitive element 52 is the reference incident light amount Φ0. After alignment and bonding, when there is a deviation in the alignment of the light-emitting surfaces of the dimming component 40 and the pixel unit 30, the external ambient light is shielded by the shading calibration structure 51, and the luminous flux of the external ambient light obtained by the photosensitive element 52 is the incident light amount Φ'. The luminous flux difference obtained by the same photosensitive element 52 is ΔΦ=|Φ0-Φ'|. The control circuit of the display panel calculates the bonding deviation of the dimming component 40 based on the luminous flux difference. The bonding deviation includes the offset direction, offset amount and rotation angle deviation of the dimming component 40.

[0075] In this application, the relative positions of the shading calibration structure 51 and the dimming component 40 are fixed. When the dimming component 40 is offset, the corresponding optical path between the shading calibration structure 51 and the photosensitive element 52 changes. For example, the corresponding relationship between the luminous flux difference of the photosensitive element 52 and the lateral offset of the dimming component 40 satisfies the following relationship:

[0076]

[0077] Among them, k x is the displacement sensitivity coefficient, in μm -1 ;k θ is the angle sensitivity coefficient, the unit is deg -1 ; ε is the system noise. ΔX is the lateral offset of the light shielding calibration structure 51, and Δθ is the rotation angle deviation of the incident ambient light. It should be noted that all calculation formulas provided in the above embodiments are only examples and are not limitations of this application.

[0078] Through the above formula, the lateral offset Δx and the rotation angle deviation Δθ of the dimming component 40 are obtained. The lateral offset ΔX is the lateral displacement deviation of the dimming component 40. The size of the lateral offset ΔX directly changes the relative coverage area of the shading calibration structure 51 and the photosensitive element 52. The size of the rotation angle deviation Δθ causes the refraction angle of the incident light to change, affecting the light intensity distribution. The larger the lateral offset ΔX of the dimming component 40, the greater the lateral (X direction) offset of the dimming component 40. The control circuit of the display panel determines the calibration parameters of the display panel fitting deviation based on the calculated fitting deviation of the dimming component 40, and calibrates the display image when the display panel displays.

[0079] For example, according to the fitting deviation of the dimming component 40, the driving voltage of the pixel unit 30 is adjusted, the luminous brightness and luminous angle of the pixel unit 30 are adjusted, etc., to achieve real-time compensation of the displayed image, realize 3D display image rendering, and clear display.

[0080] Based on the same inventive concept, an embodiment of the present application also provides a 3D display device. Figure 9 Schematic diagram of a 3D display device provided in an embodiment of the present application. Figure 9 As shown, the 3D display device 300 includes any of the display panels 200 provided in the above embodiments. Therefore, the 3D display device 300 also has the beneficial effects of the display panel 200 in the above embodiments. The similarities can be understood by referring to the above explanation of the display panel 200, which will not be repeated below.

[0081] The 3D display device 300 provided in the embodiment of the present application can be Figure 9 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: display screens, televisions, laptops, desktop monitors, electronic paper display devices, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, industrial control equipment, medical display screens, touch interactive terminals, etc. The embodiments of this application do not specifically limit this.

[0082] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, 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 and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: The display panel includes a display area and a non-display area, wherein the non-display area at least partially surrounds the display area; the display panel further includes: substrate; A plurality of pixel units are located on one side of the substrate; A dimming component, located on a side of the pixel unit away from the base substrate, and used to adjust the light output angle of the pixel unit; At least one group of positioning components is located in the non-display area; the positioning components include a light-shielding calibration structure and at least one photosensitive element; the light-shielding calibration structure is on the same layer as the dimming component and is fixed, and the photosensitive element is located between the base substrate and the dimming component; along the thickness direction of the display panel, the light-shielding calibration structure at least partially overlaps with the photosensitive surface of the photosensitive element.

2. The display panel according to claim 1, wherein: The light-shielding calibration structure is fixed in the dimming component.

3. The display panel according to claim 1, wherein: The positioning assembly further includes a collimating hole, wherein the collimating hole is located between the light-shielding calibration structure and the photosensitive element; Along the thickness direction of the display panel, the collimating hole at least partially overlaps with the light-shielding calibration structure and the photosensitive surface of the photosensitive element.

4. The display panel according to claim 3, wherein: The display panel further includes a light shielding layer; the light shielding layer is located between the dimming component and the photosensitive element; and the collimating hole is located in the light shielding layer.

5. The display panel according to claim 1, wherein: The number of the at least one group of positioning components is greater than 3 and is distributed at different side positions of the dimming component.

6. The display panel according to claim 1, wherein: In each group of the positioning components, the number of the photosensitive elements is an even number, and at least two of the photosensitive elements are symmetrically arranged.

7. The display panel according to claim 1, wherein: The light-shielding calibration structure includes a first side and a second side adjacent to each other; the first side and the second side intersect; Along the thickness direction of the display panel, the at least one photosensitive element at least partially overlaps with the first side edge and / or the second side edge.

8. The display panel according to claim 1, wherein: The dimming component includes a prism grating, the prism grating includes a plurality of grating units, the plurality of grating units are arranged along a first direction, and the grating units extend along a second direction; The grating unit covers at least one of the pixel units; The light shielding calibration structure is located on at least one side of the edge of all the grating units; The first direction and the second direction intersect and are both parallel to the plane where the base substrate is located.

9. The display panel according to claim 1, wherein: The display panel includes a liquid crystal display panel; The display panel also includes a driving substrate, a liquid crystal layer and a color filter substrate; The liquid crystal layer is located between the driving substrate and the color filter substrate; the photosensitive element is located on a side of the driving substrate close to the liquid crystal layer, and the light-shielding calibration structure is located on a side of the color filter substrate away from the liquid crystal layer.

10. The display panel according to claim 1, wherein The display panel further includes a fingerprint recognition sensor, a facial recognition sensor, and an ambient light sensor, and the photosensitive element multiplexes any one of the fingerprint recognition sensor, the facial recognition sensor, and the ambient light sensor.

11. A method for calculating the lamination deviation of a display panel, for calculating the lamination deviation of the display panel according to any one of claims 1 to 10, characterized in that: include: When the dimming component is pre-aligned and aligned with the display area, a reference amount of light incident on the photosensitive element when the photosensitive element is shielded by the light-shielding calibration structure is obtained; After the dimming component is aligned and attached to the display area, the amount of incident light received by each photosensitive element is obtained; Based on the difference between the amount of incident light received by each photosensitive element and the reference amount of incident light, the fitting deviation between the dimming component and the display area is calculated, and based on the fitting deviation, the calibration parameters of the display panel are determined.

12. A 3D display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 10.

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