Display module and display device

Abstract

The utility model provides a display module and a display device. The display module comprises a substrate comprising a first display area and a second display area; the multiple sub-pixels and the dimming layer are arranged in the first display area and located on the sides, away from the substrate, of the multiple first sub-pixels, and the dimming layer is provided with a dimming structure, comprises a photorefractive crystal material sub-layer and is configured to enable light rays incident to the first display area to be focused to the first sensor; the first sensor is located on the non-light-emitting side, and the orthographic projection of the first sensor on the substrate is at least partially overlapped with the orthographic projection of the first display area on the substrate. According to the display module, the refractive index of the photorefractive crystal material sub-layer is adjusted by utilizing the characteristic that the refractive index of the photorefractive crystal material sub-layer in the dimming structure can change along with an external light field and an electric field, so that the problem that the imaging quality of a camera is limited due to poor light transmission of a display area corresponding to the camera under the screen can be solved.

Description

Display module and display device Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a display module and display device. Background Technology

[0002] With the continuous development of full-screen technology, electronic devices such as smartphones and tablets have increasingly higher requirements for screen ratio. Under-display camera technology, as an important means to achieve full-screen displays, has received widespread attention in recent years.

[0003] However, on the display panel, the display area corresponding to the under-display camera needs to meet the light transmission requirements when the camera is capturing images, as well as the display requirements when the camera is not capturing images. When the camera is capturing images, this display area cannot achieve the best light transmission requirements, resulting in problems such as poor light transmission and limited image quality. Summary of the Invention

[0004] The purpose of this utility model is to provide a display module and display device to solve the problem that the display area corresponding to the under-display camera has poor light transmittance, which limits the imaging quality of the camera.

[0005] This utility model embodiment provides a display module, which includes a display panel, the display panel comprising:

[0006] A substrate includes a display area and a peripheral area surrounding the display area. The display area includes a first display area and a second display area, wherein the second display area at least partially surrounds the first display area, and the light transmittance of the first display area is greater than that of the second display area.

[0007] A plurality of sub-pixels are located in the display area, each of the plurality of sub-pixels including a pixel circuit and a light-emitting element, the pixel circuit being configured to drive the light-emitting element to emit light; the plurality of sub-pixels include a plurality of first sub-pixels located in the first display area and a plurality of second sub-pixels located in the second display area;

[0008] A dimming layer is disposed in the first display area and located on the side of the plurality of first sub-pixels away from the substrate. The dimming layer is provided with a dimming structure, the dimming structure including a photorefractive crystal material sub-layer. The dimming structure is configured such that light incident on the first display area can be focused onto the first sensor.

[0009] The first sensor is located on the non-light-emitting side of the display panel, and the orthographic projection of the first sensor on the substrate at least partially overlaps with the orthographic projection of the first display area on the substrate.

[0010] Optionally, in the display module, the first display area includes a plurality of spaced-apart pixel areas and a light-transmitting area located between the plurality of pixel areas;

[0011] Wherein, the orthogonal projection of the dimming structure onto the first display area is located in the light-transmitting area, the pixel area, or completely covers the first display area.

[0012] Optionally, in the display module, the first sub-pixel includes a first pixel circuit and a first light-emitting element, and both the first pixel circuit and the first light-emitting element are disposed in the pixel area, wherein the orthographic projection of the first light-emitting element on the substrate and the orthographic projection of the corresponding first pixel circuit on the substrate at least partially overlap.

[0013] Optionally, in the display module, the first sub-pixel includes a first pixel circuit and a first light-emitting element, the first light-emitting element is disposed in the pixel area, the corresponding first pixel circuit is disposed in the second display area, and the first light-emitting element and the corresponding first pixel circuit are electrically connected through a connecting line.

[0014] Optionally, in the display module, the dimming structure further includes a first electrode sublayer and a second electrode sublayer located on opposite sides of the photorefractive crystal material sublayer.

[0015] Optionally, in the display module, the dimming layer is provided with a plurality of dimming structures, and the orthographic projection of each dimming structure in the first display area is located in the light-transmitting area or the pixel area.

[0016] Optionally, in the display module, the light-emitting element includes an anode layer, a cathode layer, and a light-emitting layer located between the anode layer and the cathode layer, wherein the cathode layer is disposed on the side of the light-emitting layer away from the substrate.

[0017] The dimming layer is connected to the cathode layer and is disposed on the side of the cathode layer away from the light-emitting layer.

[0018] Optionally, the display module further includes an encapsulation layer covering the plurality of sub-pixels, the encapsulation layer comprising a plurality of sub-encapsulation layers with different refractive indices;

[0019] The dimming layer is located between two adjacent sub-encapsulation layers.

[0020] Optionally, in the display module, the orthographic projection of the first sensor onto the substrate is located inside the orthographic projection of the first display area onto the substrate.

[0021] Optionally, in the display module, the first sensor includes a camera and / or an infrared sensor.

[0022] One embodiment of the present invention also provides a display device, which includes the display module as described in any of the preceding claims.

[0023] Optionally, the display device further includes:

[0024] A middle frame is provided around the side of the display module, and a light-transmitting hole is provided on the middle frame;

[0025] The second sensor is located at the light-transmitting hole in the middle frame.

[0026] At least one of the above-described technical solutions in the specific embodiments of this utility model has the following beneficial effects:

[0027] The display module described in this embodiment of the utility model, by setting a dimming structure in the corresponding area of ​​the first sensor (such as a camera) on the display panel, utilizes the characteristic that the refractive index of the photorefractive crystal material sublayer in the dimming structure can change with the external light field and electric field, adjusts the refractive index of the photorefractive crystal material sublayer, so that the light incident on the first sensor can be accurately aligned with the first sensor, and the first sensor can accurately capture the incident light, thereby improving the problem of poor light transmittance in the display area corresponding to the first sensor, which leads to limited image quality. Attached Figure Description

[0028] Figure 1 is a three-dimensional structural schematic diagram of the display module according to one embodiment of the present invention;

[0029] Figure 2 is a cross-sectional view of part AA in Figure 1 in one embodiment;

[0030] Figure 3 is a cross-sectional view of part AA in Figure 1 in another embodiment;

[0031] Figure 4 is a schematic diagram of the setting position structure of the dimming layer in one embodiment;

[0032] Figure 5 is a cross-sectional view of part AA in Figure 1 in another embodiment;

[0033] Figure 6 is one of the planar structural schematic diagrams of the display module according to an embodiment of the present utility model;

[0034] Figure 7 is a second schematic diagram of the planar structure of the display module according to an embodiment of the present invention;

[0035] Figure 8 shows a planar schematic diagram of the arrangement of light-emitting elements in the display module of the embodiment shown in Figure 7;

[0036] Figure 9 shows a schematic diagram of the pixel circuit layout of the second display area of ​​at least one embodiment of the present invention;

[0037] Figure 10 shows a schematic diagram of the structure of a display module provided in some embodiments of the present invention;

[0038] Figure 11 shows a schematic diagram of a pixel circuit in the display module according to an embodiment of the present invention;

[0039] Figure 12 is a flowchart illustrating the control method for the display module described in this embodiment of the present invention. Detailed Implementation

[0040] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0041] The terms "first," "second," etc., used in the specification and claims of this utility model are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0042] To address the issues of poor light transmittance and limited image quality in existing display devices employing under-display camera technology, where the corresponding display area cannot achieve optimal light transmittance during image acquisition, this invention provides a display module, display device, display control method, and control device. By setting a dimming structure in the corresponding area of ​​a first sensor (such as a camera and / or infrared sensor) on the display panel, and utilizing the characteristic that the refractive index of the photorefractive crystal material sublayer in the dimming structure changes with external light and electric fields, the refractive index of the photorefractive crystal material sublayer is adjusted. This ensures that the light incident on the first sensor is accurately aligned with the first sensor, allowing the under-display camera to precisely capture the incident light. This improves the problem of poor light transmittance in the display area corresponding to the first sensor, which limits the camera's image quality.

[0043] Referring to Figures 1, 2, 3, and 6, the display module of one embodiment of this utility model includes a display panel 1, which comprises:

[0044] The substrate 100 includes a display area AA and a peripheral area BB surrounding the display area AA. The display area AA includes a first display area A1 and a second display area A2. The second display area A2 at least partially surrounds the first display area A1. The light transmittance of the first display area A1 is greater than that of the second display area A2.

[0045] A plurality of sub-pixels 200 are located in display area AA. Each sub-pixel 200 includes a pixel circuit and a light-emitting element. The pixel circuit is configured to drive the light-emitting element to emit light. The plurality of sub-pixels 200 include a plurality of first sub-pixels 210 located in the first display area A1 and a plurality of second sub-pixels 220 located in the second display area A2.

[0046] A dimming layer 300 is disposed in the first display area A1 and located on the side of the plurality of first sub-pixels 210 away from the substrate 100. The dimming layer 300 is provided with a dimming structure 310, which includes a photorefractive crystal material sub-layer 301. The dimming structure 310 is configured to enable light incident on the first display area A1 to be focused onto the first sensor 400.

[0047] The first sensor 400 is located on the non-light-emitting side of the display panel 1, and the orthographic projection of the first sensor 400 on the substrate 100 at least partially overlaps with the orthographic projection of the first display area A1 on the substrate 100. For example, the orthographic projection of the first sensor 400 on the substrate 100 is located within the orthographic projection of the first display area A1 on the substrate 100.

[0048] In this embodiment of the present invention, the display panel 1 is a panel capable of transparent display, and can be, but is not limited to, any one of OLED display panel and quantum dot display panel.

[0049] In some embodiments, the first display area A1 can be a light-transmitting display area, also referred to as an under-display camera (FDC) area, configured to display images and transmit light; the second display area A2 can be referred to as a normal display area, configured to display images. For example, the orthographic projection of the first sensor (e.g., a camera, infrared sensor, etc.) onto the substrate 100 can be located within the first display area A1 of the display substrate. In some examples, as shown in FIG1, the first display area A1 can be circular, and the size of the orthographic projection of the first sensor onto the substrate 100 can be less than or equal to the size of the first display area A1. However, this embodiment is not limited to this. In other examples, the first display area A1 can be rectangular, and the size of the orthographic projection of the first sensor onto the substrate 100 can be less than or equal to the size of the inscribed circle of the first display area A1.

[0050] In some embodiments, as shown in FIG1, in this embodiment of the present invention, a first display area A1 is provided with a plurality of first sub-pixels 210, and a second display area A2 is provided with a plurality of second sub-pixels 220. The pixel density of the plurality of first sub-pixels 210 in the first display area A1 may be less than or equal to the pixel density of the plurality of second sub-pixels 220 in the second display area A2. For example, the pixel density of the plurality of first sub-pixels 210 in the first display area A1 may be equal to the pixel density of the plurality of second sub-pixels 220 in the second display area A2. In some examples, the ratio of the resolution of the first display area A1 to the resolution of the second display area A2 may be approximately 0.8 to 1.2. Alternatively, the resolution of the second display area A2 may be approximately the same as the resolution of the first display area A1. This embodiment is not limited in this respect.

[0051] In some embodiments, the first display area A1 may be located at the top center of the display area AA, and the second display area A2 may surround the first display area A1. However, this embodiment is not limited to this. For example, the first display area A1 may be located at the top edge of the display area AA, such as the upper left or upper right corner, and the second display area A2 may surround at least one side of the first display area A1.

[0052] In some embodiments, as shown in FIG1, the display area AA can be a rectangle, such as a rounded rectangle. The first display area A1 can be a circle or an ellipse. However, this embodiment is not limited to this. For example, the first display area A1 can be a rectangle, a semicircle, a pentagon, or other shapes.

[0053] In this embodiment of the present invention, as shown in Figures 2 and 3, a dimming layer 300 is provided on the side of the plurality of first sub-pixels 210 in the first display area A1 away from the substrate 100. The dimming layer 300 is provided with a dimming structure 310. By utilizing the photorefractive crystal material sub-layer 301 in the dimming structure 310, a light channel with adjustable refractive index can be formed, so that the incident light rays incident on the under-display camera through the light channel can be accurately incident on the under-display camera, thereby increasing the light flux incident on the under-display camera and improving the problem that the display area corresponding to the under-display camera has poor light transmittance, resulting in limited camera imaging quality.

[0054] Photorefractive crystal materials exhibit photorefractive effects. Under incident light, the migration, capture, and recombination of photogenerated charge carriers (electron-hole pairs) within the crystal alter its internal charge distribution, leading to a change in refractive index via an electro-optic effect. Therefore, photorefractive crystal materials are highly sensitive to light, exhibiting significant refractive index changes even under weak light. Furthermore, the photorefractive effect of photorefractive crystal materials is typically reversible; by altering illumination conditions (such as intensity, wavelength, and illumination time) or by applying an external electric field, the refractive index of the crystal can be restored to its initial state, achieving controllability of the photorefractive crystal state.

[0055] Therefore, based on the aforementioned characteristics of photorefractive crystal materials, they can be applied to display panels as a dimming structure for under-display cameras, enabling the adjustment of the refractive index of light incident on the under-display camera.

[0056] Specifically, photorefractive crystal materials can excite charge carriers under light irradiation. When two beams of light in the crystal produce spatially modulated light intensities, the excited charge carriers undergo spatial migration, which disrupts the original neutral charge distribution and forms a spatially modulated distributed charge field. This charge field induces the modulation of the refractive index through the electro-optic effect of the crystal, thus forming a refractive index phase grating. This photoinduced phase grating interacts with the light wave, thereby forming a photorefractive effect. The wave equation for the propagation of incident light in the photorefractive crystal can be represented by the following formula (1):

[0057]

[0058] Among them, E opt Let be the amplitude of the light field, c be the speed of light in a vacuum, and n be the refractive index of the photorefractive crystal.

[0059] Since the refractive index n of a photorefractive crystal is not fixed, but depends on the external electric field and changes with the intensity of the external electric field, the relationship between the crystal refractive index and the electric field can be expressed by the following formula (2):

[0060]

[0061] Where: n is the refractive index modulated by the photorefractive crystal, n0 is the initial refractive index of the crystal, and γ ef E is the effective electro-optic coefficient. SC It represents the space charge field.

[0062] Based on formulas (1) and (2) above, the basic dynamic equations describing the photorefractive effect can be obtained. The quantitative relationship between the crystal refractive index and the electric field under different conditions can be obtained through the finite element iterative solution method. Using the above theoretical basis, it can be seen that by adjusting the change in electric field strength, the refractive index of the photorefractive crystal material can be controlled to vary between 1.4 and 1.9. This range of refractive index variation can cover the refractive index variations of each film layer within the OLED display module, and therefore can be applied to display panels for the dimming structure of under-display cameras.

[0063] In some embodiments of the display module described in this utility model, the photorefractive crystal material sublayer 301 in the dimming structure 310 has a different refractive index when the intensity of the incident light is different.

[0064] In some embodiments, optionally as shown in Figures 3 and 4, the dimming structure 310 further includes a first electrode sublayer 302 and a second electrode sublayer 303 located on opposite sides of the photorefractive crystal material sublayer 301.

[0065] The display module described in this embodiment of the present invention, by setting a first electrode sublayer 302 and a second electrode sublayer 303 on opposite sides of the photorefractive crystal material sublayer 301 in the dimming structure 310, and applying an electric field between the first electrode sublayer 302 and the second electrode sublayer 303, the photorefractive crystal material sublayer 301 is placed in the electric field formed by the first electrode sublayer 302 and the second electrode sublayer 303. According to formula (2), the electric field strength E is used to... SC The change in the refractive index can be adjusted to change the refractive index of sublayer 301 of the photorefractive crystal material.

[0066] In some embodiments of this utility model, optionally, as shown in Figures 1, 2, and 3, the orthogonal projection of the dimming layer 300 onto the plane of the substrate 100 covers the first display area A1 in the display area. In this embodiment, the dimming structure 310 of the dimming layer 300 is only configured corresponding to the first display area A1. This allows the dimming structure 310 to be configured corresponding to the light channel area of ​​the under-display camera, enabling adjustment of the refractive index of the incident light to the under-display camera and increasing the luminous flux incident on the under-display camera.

[0067] In some embodiments, optionally, the orthographic projection of the dimming layer 300 onto the plane of the substrate 100 can also cover the entire display area AA. That is, the dimming structure 310 is provided for the entire display area AA corresponding to the substrate 100. Using this implementation, the refractive index of the incident light in the entire display area can be controlled to adjust the luminous flux of the entire display area.

[0068] In some embodiments of this utility model, as shown in FIG2, a dimming structure 310 is optionally provided on the dimming layer 300, and the dimming structure 310 covers the entire first display area A1. The refractive index of the incident light is adjusted by the dimming structure 310. When there is only one dimming structure 310, the photorefractive crystal material sublayer 301, the first electrode sublayer 302 and the second electrode sublayer 303 located on opposite sides of the photorefractive crystal material sublayer 301 are respectively provided corresponding to the entire first display area A1. Optionally, when the image is captured by the under-display camera, a fixed low-level voltage can be input to one of the first electrode sublayer 302 and the second electrode sublayer 303. For the other of the first electrode sublayer 302 and the second electrode sublayer 303, the input voltage value can be determined according to the magnitude of the electric field to be applied.

[0069] In some embodiments, optionally, as shown in FIG3, a plurality of dimming structures 310 are provided on the dimming layer 300 at intervals. The orthographic projection of each dimming structure 310 on the first display area A1 is located in the light-transmitting area A11 or in the pixel area A12 of the first display area A1. Optionally, one dimming structure 310 corresponds to at least one pixel unit of the first display area A1. When there are multiple dimming structures 310, each dimming structure 310 includes a photorefractive crystal material sublayer 301, a first electrode sublayer 302 and a second electrode sublayer 303 located on opposite sides of the photorefractive crystal material sublayer 301, or, the multiple dimming structures 310 include photorefractive crystal material sublayers 301 and second electrode sublayers 303 arranged at intervals, and the first electrode sublayers 302 of the multiple dimming structures 310 are interconnected to form a surface electrode structure covering the first display area A1.

[0070] Using this implementation structure, when acquiring images through the under-display camera, a fixed low-level voltage can be simultaneously input to the first electrode sublayers 302 of multiple dimming structures 310, while the voltages of the second electrode sublayers 303 of the multiple dimming structures 310 can be individually controlled. Specifically, different voltage values ​​can be input to the second electrode sublayers 303 of the multiple dimming structures 310 according to the shape, size, and position of the light channel to be formed. Based on the display panel described in this embodiment, the multiple dimming structures 310 can be controlled independently to achieve precise control of the shape, size, and position of the incident light channel of the under-display camera.

[0071] In some embodiments of this utility model, as shown in Figures 2 and 3, the display module may optionally include an encapsulation layer 600 disposed on the light-emitting side of the display panel 1. Optionally, a dimming layer 300 is disposed between the sub-pixels 200 and the encapsulation layer 600. Optionally, the photorefractive crystal material sub-layer 301 in the dimming layer 300 has different thicknesses corresponding to the film layers of sub-pixels 200 of different colors, which can improve color shift and improve the light transmission efficiency of the area corresponding to the under-display camera by changing the optical path difference of the emitted light. Specifically, the emitted light is reflected between the photorefractive crystal material sub-layer 301 and the light-emitting layer inside the display panel. Light of different wavelengths emitted by sub-pixels 200 of different colors will have different intensity distributions due to interference. When the optical path difference of the emitted light propagating in the photorefractive crystal material sub-layer 301 exactly satisfies the constructive interference condition, the light intensity of the emitted light corresponding to that wavelength will increase; conversely, if the destructive interference condition is met, the light intensity will decrease. Based on this principle, by precisely controlling the thickness of the inserted photorefractive crystal material sublayer 301, the interference of different colors of light can be optimally balanced, thereby improving light transmission efficiency and color shift.

[0072] In other embodiments, the encapsulation layer 600 includes multiple sub-encapsulation layers with different refractive indices spaced apart to form the encapsulation layer 600. The dimming layer 300 may also be disposed inside the encapsulation layer 600, located between two adjacent sub-encapsulation layers. For example, as shown in FIG3, the encapsulation layer 600 includes a first sub-encapsulation layer 610 with a first refractive index and a second sub-encapsulation layer 620 with a second refractive index, where the first refractive index is greater than the second refractive index, and the dimming layer 300 is located between the first sub-encapsulation layer 610 and the second sub-encapsulation layer 620. Alternatively, as shown in FIG4, the encapsulation layer 600 includes multiple sub-encapsulation layers with low refractive index and high refractive index spaced apart, n1, n2, n3, ..., nL, and the dimming layer 300 may be located between any two adjacent sub-encapsulation layers. For example, as shown in Figure 5, from the first sub-pixel 210 to the direction away from the first sub-pixel 210, the encapsulation layer 600 includes a first sub-encapsulation layer 610 with a first refractive index, a second sub-encapsulation layer 620 with a second refractive index, a third sub-encapsulation layer 630 with a first refractive index, and a fourth sub-encapsulation layer 620 with a second refractive index, which are arranged sequentially. The first refractive index is greater than the second refractive index. The dimming layer 300 is disposed between the third sub-encapsulation layer 630 and the fourth sub-encapsulation layer 640, or it can be disposed between the first sub-encapsulation layer 610 and the second sub-encapsulation layer 620. In this implementation structure, the refractive index of the photorefractive crystal material sublayer 301 of the dimming layer 300 is between 1.4 and 1.9, located between the high-refractive-index organic layer and the low-refractive-index organic layer of the microcavity of the OLED display module, forming a distributed Bragg reflection structure. This structure guides the outgoing light to reflect multiple times between the multiple sub-encapsulation layers. By using the structure of multiple low-refractive-index sub-encapsulation layers and high-refractive-index sub-encapsulation layers spaced apart, total internal reflection occurs when the incident angle of the outgoing light is greater than the critical angle and when it enters the low-refractive-index sub-encapsulation layer from the high-refractive-index sub-encapsulation layer. In this way, most of the outgoing light will be reflected multiple times inside the display panel and cannot be effectively emitted, thereby improving the light emission efficiency of the front side of the device.

[0073] In one embodiment of this utility model, the multiple sub-pixels 200 of the display area AA are formed into multiple pixel groups, or pixel units. Optionally, in order to reduce the pixel area and increase the light transmittance of the display panel, each pixel group of the display area AA includes two green sub-pixels, one red sub-pixel, and one blue sub-pixel, and the multiple sub-pixels in the pixel group are arranged in a structure in which the red sub-pixel and the blue sub-pixel are arranged on top of each other, and the two green sub-pixels are arranged on both sides of the red sub-pixel and the blue sub-pixel, and are located in the middle of the red sub-pixel and the blue sub-pixel.

[0074] It should be noted that the arrangement of multiple sub-pixels in the above pixel group is only an example and is not limited to this.

[0075] In some implementations, the orthographic projection of each sub-pixel onto the substrate may optionally be formed as a circle, a quadrilateral, or a polygon.

[0076] In this embodiment of the present invention, optionally, to ensure the light transmittance of the first display area A1 corresponding to the under-display camera, the distribution density of the plurality of sub-pixels 200 on the first display area A1 is less than the distribution density of the plurality of sub-pixels 200 on the second display area A2. Optionally, the number of sub-pixels 200 disposed per unit area on the first display area A1 is less than the number of sub-pixels 200 disposed per unit area on the second display area A2, or the distribution area of ​​the sub-pixels 200 on the first display area A1 is less than the distribution area of ​​the sub-pixels 200 on the second display area A2.

[0077] In one embodiment of the present invention, the first display area A1 includes a plurality of pixel areas spaced apart and a light-transmitting area located between the plurality of pixel areas; the dimming structure 310 is projected onto the light-transmitting area, the pixel area, or completely covers the first display area A1.

[0078] The pixel area of ​​the first display area A1 is also the setting area of ​​the first sub-pixel 210, and the interval area between multiple first sub-pixels 210 forms a light-transmitting area.

[0079] In some embodiments, as shown in FIG6, the first sub-pixel 210 includes a first pixel circuit 211 and a first light-emitting element 212, and both the first pixel circuit 211 and the first light-emitting element 212 are disposed in the pixel area. The orthographic projection of the first light-emitting element 212 on the substrate 100 and the orthographic projection of the corresponding first pixel circuit 211 on the substrate 100 at least partially overlap.

[0080] In this embodiment, the first pixel circuit 211 and the first light-emitting element 212 of the first sub-pixel 210 are both disposed within the first display area A1, and the first pixel circuit 211 is formed as a structure built into the first display area A1.

[0081] As shown in Figure 6, in the first display area A1, the first pixel circuit 211 of each first sub-pixel 210 is configured to drive the connected first light-emitting element 212 to emit light; in the second display area A2, the second pixel circuit 221 of each second sub-pixel 220 is configured to drive the connected second light-emitting element 222 to emit light. The first pixel circuit 211 and the second pixel circuit 221 each include multiple transistors and at least one capacitor. For example, the first pixel circuit 211 and the second pixel circuit 221 can be 3T1C, 4T1C, 5T1C, 5T2C, 6T1C, 7T1C, or 8T1C structures. In the above circuit structures, T refers to a thin-film transistor, C refers to a capacitor, the number before T represents the number of thin-film transistors in the circuit, and the number before C represents the number of capacitors in the circuit.

[0082] In one embodiment of this invention, the first light-emitting element 212 and the second light-emitting element 222 can be any of the following: a light-emitting diode (LED), an organic light-emitting diode (OLED), a quantum dot light-emitting diode (QLED), or a micro-LED (including mini-LED or micro-LED). For example, the first light-emitting element 212 and the second light-emitting element 222 can each be an OLED, which can emit red, green, blue, or white light under the drive of its corresponding pixel circuit. The emission color of the first light-emitting element 212 and the second light-emitting element 222 can be determined as needed. In some examples, as shown in Figures 2 and 3, the first light-emitting element 212 and the second light-emitting element 222 can each include: an anode (or anode layer) 201, a cathode (or cathode layer) 202, and an organic light-emitting layer 203 located between the anode 201 and the cathode 202. The anode of the light-emitting element can be electrically connected to the corresponding pixel circuit. However, this embodiment is not limited in this respect.

[0083] In this embodiment of the present invention, the dimming layer 300 is connected to the cathode 202 and is disposed on the side of the cathode 202 away from the organic light-emitting layer 203.

[0084] In some embodiments, as shown in FIG7, the first sub-pixel 210 optionally includes a first pixel circuit 211 and a first light-emitting element 212. The first light-emitting element 212 is disposed in the pixel area of ​​the first display area A1, and the corresponding first pixel circuit 211 is disposed in the second display area A2. The first light-emitting element 212 and the corresponding first pixel circuit 211 are electrically connected through a connecting line.

[0085] In this embodiment, the first pixel circuit 211 for driving the first light-emitting element 212 of the first display area A1 to emit light is externally disposed in the first display area A1. In this embodiment, the display module includes at least: a plurality of first light-emitting elements 212 located in the first display area A1, a plurality of second light-emitting elements 222 located in the second display area A2, and a plurality of pixel circuits. The plurality of pixel circuits located in the second display area A2 may include: a plurality of first-type pixel circuits and a plurality of second-type pixel circuits 221. The plurality of first-type pixel circuits may include: a plurality of first-type pixel circuits 211 and a plurality of invalid pixel circuits. In some examples, at least one of the plurality of first-type pixel circuits 211 can be electrically connected to at least one of the plurality of first light-emitting elements 212 via a conductive connection line 51. The first pixel circuit 211 can be configured to provide a driving signal to the connected first light-emitting element 212 to drive the corresponding first light-emitting element 212 to emit light. For example, the plurality of first-type pixel circuits 211 and the plurality of first light-emitting elements 212 can have a one-to-one driving relationship or a one-to-many driving relationship. Since the first light-emitting element 212 and the first pixel circuit 211 are located in different regions, the orthographic projection of at least one first pixel circuit 211 on the substrate 100 and the orthographic projection of at least one first light-emitting element 212 on the substrate may not overlap.

[0086] In some examples, at least one of the plurality of second pixel circuits 221 may be electrically connected to at least one of the plurality of second light-emitting elements 222, and the orthographic projection of at least one second pixel circuit 221 onto the substrate 100 and the orthographic projection of at least one second light-emitting element 222 onto the substrate 100 may at least partially overlap. The second pixel circuit 221 may be configured to provide a driving signal to the connected second light-emitting element 222 to drive the corresponding second light-emitting element 222 to emit light. For example, the plurality of second pixel circuits 221 and the plurality of second light-emitting elements 222 may have a one-to-one driving relationship or a one-to-many driving relationship.

[0087] Figure 8 is a schematic planar arrangement of the light-emitting elements of a display module according to at least one embodiment of the present invention. In some examples, as shown in Figures 7 and 8, the first display area A1 of the display module may include a plurality of first light-emitting elements 212, which may include: a plurality of first-type light-emitting elements 212a and 212d emitting a first color light, a plurality of second-type light-emitting elements 212b emitting a second color light, and a plurality of third-type light-emitting elements 212c emitting a third color light. The second display area A2 of the display module may include a plurality of second light-emitting elements 222, which may include: a plurality of fourth-type light-emitting elements 222a and 222d emitting a first color light, a plurality of fifth-type light-emitting elements 222b emitting a second color light, and a plurality of sixth-type light-emitting elements 222c emitting a third color light. In some examples, the first color light may be green light, the second color light may be red light, and the third color light may be blue light. However, this embodiment is not limited in this respect.

[0088] In some examples, a pixel unit (or pixel group) of the first display area A1 may include four first light-emitting elements (e.g., two first light-emitting elements 212a and 212d, one second light-emitting element 212b, and one third light-emitting element 212c). The two first light-emitting elements 212a and 212d, the one second light-emitting element 212b, and the one third light-emitting element 212c may be arranged in a diamond shape to form an RGBG pixel arrangement. For example, the second light-emitting element 212b and the third light-emitting element 212c may be arranged alternately in the same row along the first direction D1 and alternately in the same column along the second direction D2; the first light-emitting elements 212a and 212d may be arranged sequentially in the same row along the first direction D1 and sequentially in the same column along the second direction D2. The rows containing the second type of light-emitting element 212b and the third type of light-emitting element 212c are arranged alternately with the rows containing the first type of light-emitting elements 212a and 212d, and the columns containing the second type of light-emitting element 212b and the third type of light-emitting element 212c are arranged alternately with the columns containing the first type of light-emitting elements 212a and 212d. The arrangement of the fourth type of light-emitting elements 222a and 222d, the fifth type of light-emitting element 222b and the sixth type of light-emitting element 222c in the second display area A2 can be the same as the arrangement of the first type of light-emitting elements 212a and 212d, the second type of light-emitting element 212b and the third type of light-emitting element 212c in the first display area A1, so it will not be described again here.

[0089] In some examples, two adjacent first light-emitting elements 212a and 212d arranged along the first direction D1 in the first display area A1 can be interconnected. For example, the anodes of two adjacent first light-emitting elements 212a and 212d arranged along the first direction D1 can be interconnected. In this example, the first pixel circuit 211 in the second display area A2 and the first light-emitting element 212 in the first display area A1 can have a one-to-two driving relationship; in other words, one first pixel circuit 211 in the second display area A2 can be configured to drive two first light-emitting elements 212 (e.g., one first light-emitting element 212a and another first light-emitting element 212d) in the first display area A1. The first pixel circuit 211 in the second display area A2 and the second light-emitting element 212b in the first display area A1 can have a one-to-one driving relationship, and the first pixel circuit 211 in the second display area A2 and the third light-emitting element 212c in the first display area A1 can have a one-to-one driving relationship. The second pixel circuit 221 and the second light-emitting element 222 within the second display area A2 can have a one-to-one driving relationship.

[0090] In some examples, each light-emitting element in the display area may include an anode, an organic light-emitting layer, and a cathode stacked sequentially. In this example, the light-emitting area of ​​the light-emitting element refers to the overlapping area of ​​the anode, organic light-emitting layer, and cathode of the light-emitting element, that is, the connection area between the anode and the organic light-emitting layer and cathode exposed by the pixel opening of the pixel definition layer.

[0091] In some examples, the area of ​​the light-emitting region of a single first light-emitting element 212 can be smaller than the area of ​​the light-emitting region of a single second light-emitting element 222 emitting light of the same color. Specifically, the area of ​​the light-emitting region of the first type of light-emitting element 212a (or 212d) can be smaller than the area of ​​the light-emitting region of the fourth type of light-emitting element 222a (or 222d). The area of ​​the light-emitting region of the second type of light-emitting element 212b can be smaller than the area of ​​the light-emitting region of the fifth type of light-emitting element 222b. The area of ​​the light-emitting region of the third type of light-emitting element 212c can be smaller than the area of ​​the light-emitting region of the sixth type of light-emitting element 222c. For example, the orthographic projection of a single second light-emitting element 222 onto the substrate can be a quadrilateral or a pentagon, and the orthographic projection of a single first light-emitting element 212 onto the substrate can be a circle or an ellipse. In this example, by reducing the area of ​​the light-emitting region of the first light-emitting element 212, the light transmittance of the first display area A1 can be increased, and the diffraction situation can be improved.

[0092] Figure 9 is a schematic diagram of the pixel circuit layout of the second display area according to at least one embodiment of the present disclosure.

[0093] In some examples, as shown in Figures 7 and 9, the second display area A2 of the display module may include: a first sub-display area (also referred to as a transition area) A21 and a second sub-display area (also referred to as a non-transition area) A22. The first sub-display area A21 may be located on at least one side outside the first display area A1 (e.g., one side; or, both sides; or, all around, i.e., including the top and bottom sides and both sides). The first sub-display area A21 may be connected to the first display area A1, and the second sub-display area A22 may be located on at least one side of the first sub-display area A21, for example, it may surround the first sub-display area A21.

[0094] In some examples, the plurality of first pixel circuits 211 in the second display area A2 includes: a plurality of first type pixel circuits 2110 located in the first sub-display area A21, a plurality of first invalid pixel circuits 2111a located in the first sub-display area A21, a plurality of second invalid pixel circuits 2111b located in the second sub-display area A22, and a plurality of second type pixel circuits 2111 located in the second display area A2.

[0095] In some examples, multiple first-type pixel circuits 2110 in the first sub-display area A21 can be spaced apart between multiple second-type pixel circuits 2111, and multiple first invalid pixel circuits 2111a can be spaced apart between multiple second-type pixel circuits 2111; multiple second invalid pixel circuits 2111b in the second sub-display area A22 can be spaced apart between multiple second-type pixel circuits 2111. For example, multiple second-type pixel circuits 2111 can be arranged between two adjacent first-type pixel circuits 2110 in the first direction D1, multiple second-type pixel circuits 2111 can be arranged between two adjacent first invalid pixel circuits 2111a in the first direction D1, and multiple second-type pixel circuits 2111 can be arranged between two adjacent second invalid pixel circuits 2111b in the first direction D1. This example, by setting multiple invalid pixel circuits (including multiple first invalid pixel circuits 2111a and multiple second invalid pixel circuits 2111b) in the second display area A2, can help improve the uniformity of components in multiple film layers during the etching process. For example, an invalid pixel circuit can have a structure that is roughly the same as the first pixel circuit in its row or column, except that it is not electrically connected to any light-emitting element.

[0096] In some examples, as shown in FIG9, at least one first-type pixel circuit 2110 in the first sub-display area A21 can be electrically connected to at least one first light-emitting element 212 via conductive connection line 51, and is configured to drive the at least one first light-emitting element 212 to emit light. For example, two adjacent first light-emitting elements 212 emitting a first color light (e.g., green G) in the first display area A1 can be driven by the same first-type pixel circuit 2110, a single first light-emitting element 212 emitting a second color light (e.g., red R) in the first display area A1 can be driven by a single first-type pixel circuit, and a single first light-emitting element 212 emitting a third color light (e.g., blue B) in the first display area A1 can be driven by a single first-type pixel circuit 2110. In some examples, the first-type pixel circuit driving the first light-emitting element 212 emitting the first color light can be located on the side of the first-type pixel circuit driving the first light-emitting elements 212 emitting the second and third colors of light closer to the first display area A1. In some examples, the conductive connection line 51 can be made of a transparent conductive material to improve the light transmittance of the display substrate. For example, multiple conductive connecting lines 51 can be arranged within at least one transparent conductive layer.

[0097] In this embodiment of the invention, the display module further includes power lines extending from the first display area A1 and the second display area A2, configured to provide a constant voltage signal to the pixel circuit. In some embodiments, the structures of the power lines in the first display area A1 and the second display area A2 are different, thereby simplifying the first power line in the first display area A1 and improving the light transmittance of the first display area.

[0098] Figure 10 shows a schematic diagram of the structure of a display module provided in some embodiments of the present invention. The display module includes a first power line 311, which includes multiple first conductors L1, multiple second conductors L2, and multiple third conductors L3. The first conductors L1 extend from a second display area A2 to a first display area A1. The multiple second conductors L2 are located in the first display area A1 and are located between adjacent first conductors L1. Each second conductor L2 extends along a first direction D1. The third conductors L3 are located at least in the first display area A1. For example, the third conductors L3 extend from the second display area A2 to the first display area A1 and extend along a second direction D2. The first direction D1 intersects the second direction D2, and adjacent second conductors L2 are spaced apart from each other along the first direction D1. The second conductors L2 are connected to the first conductors L1 through the third conductors L3. For example, the first direction D1 is perpendicular to the second direction D2, but it is not limited thereto. For example, the first conductors L1 extend along the first direction D1. For example, in an embodiment of the present invention, the second conductors L2 are only located in the first display area A1. In the embodiments of this disclosure, the element extending along a certain direction is not necessarily a straight line, but may also have curved or broken lines. For example, the extension direction of an element refers to the general extension trend of the element. For example, each part of the element does not necessarily extend along that direction.

[0099] By adopting this implementation structure, compared with the second display area A2, by adjusting the structure of the first power line of the first display area A1, it is equivalent to removing part of the first power line set along the second direction D2 in the usual display panel, simplifying the first power line of the first display area and improving the light transmittance of the first display area A1.

[0100] For example, as shown in Figure 10, the first conductor L1 and the second conductor L2 respectively connect two adjacent rows of pixel units in a pixel group R1. However, this is not the only embodiment; in other embodiments, the pixel group R1 may also include two or more rows of pixel units. For example, as shown in Figure 10, the pixel group R1 includes at least two pixel units located in two adjacent rows, and the first conductor L1 and the second conductor L2 overlap with the two pixel units located in the two adjacent rows, respectively. For example, as shown in Figure 10, the first conductor L1 overlaps with the first pixel unit 101, and the second conductor L2 overlaps with the third pixel unit 103. For example, as shown in Figure 10, the first conductor L1 also overlaps with the second pixel unit 102, and the second conductor L2 also overlaps with the fourth pixel unit 104.

[0101] In this embodiment of the invention, in the first display area A1, multiple pixels respectively include a first pixel unit 101, a second pixel unit 102, a third pixel unit 103, and a fourth pixel unit 104, wherein the first pixel unit 101, the second pixel unit 102, the third pixel unit 103, and the fourth pixel unit 104 constitute a pixel group R1. In the first display area A1, a pixel group R1 forms two virtual pixels R0 to improve the display effect. In the second display area A2, a pixel group R1 is a repeating unit, arranged in an array in the second display area A2.

[0102] For example, as shown in Figure 10, multiple second conductors L2 are arranged sequentially along the first direction D1. For example, as shown in Figure 10, adjacent second conductors L2 are not directly connected; multiple non-directly connected second conductors L2 are formed by removing a portion of the first power line arranged along the first direction.

[0103] For example, as shown in Figure 10, in order to improve the light transmittance of the first display area A1, the length of the portion of the first conductor L1 located in the first display area A1 in the first direction D1 is greater than the length of the second conductor L2 in the first direction D1.

[0104] For example, as shown in Figure 10, the first power line 311 also includes a fourth conductor L4 extending along the second direction D2. The second conductor L2 is connected to the first conductor L1 via the fourth conductor L4. The length of the fourth conductor L4 in the second direction D2 is less than or equal to the length of the third conductor L3 in the second direction D2. In the display panel shown in Figure 10, the length of the fourth conductor L4 in the second direction D2 is less than the length of the third conductor L3 in the second direction D2. For example, as shown in Figure 10, to further improve the light transmittance of the first display area, multiple fourth conductors L4 are provided, arranged sequentially along the second direction D2, with adjacent fourth conductors L4 spaced apart from each other in the second direction D2. For example, as shown in Figure 10, multiple fourth conductors L41 are located between the third conductors L31 and L32, which are adjacent third conductors L3. Figure 10 shows three fourth conductors L41, but the number of fourth conductors L4 located between adjacent third conductors L3 is not limited to that shown in the figure and can be determined as needed. Because multiple fourth conductors L4 are spaced apart from each other in the second direction D2, it is equivalent to removing part of the first power line set along the second direction in a typical display panel, thereby reducing wiring, optimizing wiring space, and improving light transmittance.

[0105] For example, as shown in Figure 10, the first power line 311 also includes a fifth conductor L5, which extends along the first direction D1. The fifth conductor L5 is located in the second display area A2 and is situated between adjacent first conductors L1. The fifth conductor L5 and its adjacent second conductor L2 are spaced apart from each other along the first direction D1. Thus, at the boundary between the first and second display areas, the wiring is reduced, and the light transmittance is improved.

[0106] As shown in Figure 10, optionally, in the display panel, the first power line 311 further includes multiple sixth conductors L6, which are located in the second display area A2 and extend along the second direction D2. In the second display area R2, multiple fifth conductors L5 and multiple sixth conductors L6 are intersected. In the embodiments of this disclosure, both the fifth conductors L5 and the sixth conductors L6 are located only in the second display area A2.

[0107] Figure 11 is a schematic diagram of a pixel circuit in the display module of this utility model embodiment, taking 7T1C as an example.

[0108] The pixel circuit includes gate lines 113 and data lines 313. Gate lines 113 and data lines 313 are insulated from each other. Each gate line 113 connects to a row of pixel units, and each data line 313 connects to a column of pixel units. For example, gate lines 113 are configured to provide a scan signal to a row of pixel units. Gate lines 113 are configured to provide a scan signal SCAN to the pixel circuit (such as a first pixel circuit 211 or a second pixel circuit 221). A light emission control signal line 110 is configured to provide a light emission control signal EM to the pixel units. Data lines 313 are configured to provide a data signal DATA to the pixel circuit. A first power supply line 311 is configured to provide a constant first voltage signal ELVDD to the pixel circuit, and a second power supply line 312 is configured to provide a constant second voltage signal ELVSS to the pixel circuit, wherein the first voltage signal ELVDD is greater than the second voltage signal ELVSS. An initialization signal line 2100 is configured to provide an initialization signal Vint to the pixel circuit. The initialization signal Vint is a constant voltage signal, the magnitude of which can be, for example, between the first voltage signal ELVDD and the second voltage signal ELVSS, but is not limited thereto. For example, the initialization signal Vint can be less than or equal to the second voltage signal ELVSS. For example, under the control of signals such as the scan signal SCAN, the data signal DATA, the initialization signal Vint, the first voltage signal ELVDD, the second voltage signal ELVSS, and the light emission control signal EM, the pixel circuit outputs a drive current to drive the light-emitting element (such as the first light-emitting element 212 or the second light-emitting element 222) to emit light. The light-emitting element emits red light, green light, blue light, or white light, etc., under the drive of its corresponding pixel circuit 10.

[0109] As shown in Figure 11, the pixel circuit includes a driving transistor T1, a data writing transistor T2, a threshold compensation transistor T3, a first light-emitting control transistor T4, a second light-emitting control transistor T5, a first reset transistor T6, a second reset transistor T7, and a storage capacitor C1. The driving transistor T1 is electrically connected to the light-emitting element and outputs a driving current to drive the light-emitting element to emit light under the control of signals such as the scan signal SCAN, the data signal DATA, the first voltage signal ELVDD, and the second voltage signal ELVSS.

[0110] For example, the display panel provided in this embodiment further includes a data driving circuit and a scan driving circuit. The data driving circuit is configured to provide a data signal DATA to the pixel unit according to the instructions of the control circuit; the scan driving circuit is configured to provide signals such as a light emission control signal EM, a scan signal SCAN, and a reset control signal RESET to the pixel unit according to the instructions of the control circuit. For example, the control circuit includes an external integrated circuit (IC), but is not limited thereto. For example, the scan driving circuit is a GOA (Gate driver On Array) structure mounted on the display panel, or a driver chip (IC) structure bonded to the display panel. For example, different driving circuits can also be used to provide the light emission control signal EM and the scan signal SCAN respectively. For example, the display panel also includes a power supply (not shown in the figure) to provide the above-mentioned voltage signals, which can be a voltage source or a current source as needed. The power supply is configured to provide a first voltage signal ELVDD, a second power supply voltage ELVSS, and an initialization signal Vint to the pixel unit P0 through a first power line 311, a second power line 312, and an initialization signal line 2100, respectively.

[0111] As shown in Figure 11, the second terminal C12 of the storage capacitor C1 is electrically connected to the first power supply line 311, and the first terminal C11 of the storage capacitor C1 is electrically connected to the second terminal T32 of the threshold compensation transistor T3. The gate T20 of the data writing transistor T2 is electrically connected to the gate line 113, and the first terminal T21 and the second terminal T22 of the data writing transistor T2 are electrically connected to the data line 313 and the first terminal T11 of the driving transistor T1, respectively. The gate T30 of the threshold compensation transistor T3 is electrically connected to the gate line 113, the first terminal T31 of the threshold compensation transistor T3 is electrically connected to the second terminal T12 of the driving transistor T1, and the second terminal T32 of the threshold compensation transistor T3 is electrically connected to the gate T10 of the driving transistor T1.

[0112] For example, as shown in Figure 11, the gate T40 of the first light-emitting control transistor T4 and the gate T50 of the second light-emitting control transistor T5 are both connected to the light-emitting control signal line 110.

[0113] For example, as shown in Figure 11, the first electrode T41 and the second electrode T42 of the first light-emitting control transistor T4 are electrically connected to the first power supply line 311 and the first electrode T11 of the driving transistor T1, respectively. The first electrode T51 and the second electrode T52 of the second light-emitting control transistor T5 are electrically connected to the second electrode T12 of the driving transistor T1 and the pixel electrode E1 (which can be the anode of the OLED) of the light-emitting element 20, respectively. The common electrode E2 (which can be the common electrode of the OLED, such as the cathode) of the light-emitting element 20 is electrically connected to the second power supply line 312.

[0114] For example, as shown in Figure 11, the gate T60 of the first reset transistor T6 is electrically connected to the first reset control signal line 111, the first electrode T61 of the first reset transistor T6 is electrically connected to the initialization signal line 2100 (first initialization signal line 2110), and the second electrode T62 of the first reset transistor T6 is electrically connected to the gate T10 of the driving transistor T1. The gate T70 of the second reset transistor T7 is electrically connected to the second reset control signal line 1120, the first electrode T71 of the second reset transistor T7 is electrically connected to the initialization signal line 2100 (second initialization signal line 2120), and the second electrode T72 of the second reset transistor T7 is electrically connected to the pixel electrode E1 of the light-emitting element 20.

[0115] It should be noted that the specific implementation structure of the pixel circuit in the above embodiments of this utility model is only an example and is not limited thereto.

[0116] One embodiment of this utility model also provides a display device, wherein the display device includes the display module as described in any of the above embodiments.

[0117] Optionally, in some embodiments of this utility model, as shown in Figures 1 to 3, the display device further includes:

[0118] The first sensor 400 (such as a camera or infrared sensor) is disposed on the side of the substrate 100 away from the light-emitting side, and the orthographic projection of the first sensor 400 on the plane of the substrate 100 is located inside the orthographic projection of the first display area A1 on the substrate 100.

[0119] Optionally, the orthographic projection of the first sensor 400 onto the plane of the dimming layer 300 is located within the area of ​​the photorefractive crystal material sublayer 301.

[0120] In this embodiment of the invention, the refractive index of the photorefractive crystal material sublayer in the dimming structure can be adjusted according to the changes in the external light field and electric field. This adjustment is used to adjust the shape, size, and position of the light channel incident on the under-display camera, so that the light incident on the under-display camera can be accurately aligned with the camera.

[0121] In other embodiments, as shown in FIG1, the display device may optionally further include:

[0122] A middle frame 4 is provided around the side of the substrate 100, and a light-transmitting hole is provided on the middle frame 4;

[0123] The second sensor 500 is located at the light-transmitting hole in the middle frame 4.

[0124] The display device described in this embodiment of the invention includes a first sensor 400 and / or a second sensor 500. These sensors monitor the ambient light intensity and / or screen brightness in real time. Based on the detected light intensity, the voltage difference across the photorefractive crystal material sublayer is adjusted, causing a change in the refractive index of the sublayer. This dynamic adjustment of the refractive index allows for precise control of the shape, size, and position of the light channel corresponding to the under-display camera, enabling the camera to accurately capture incident light and increase the luminous flux reaching it.

[0125] Alternatively, in another embodiment, the method may further include:

[0126] Based on the ambient light intensity information and / or screen brightness detected in real time by the first sensor 400 and / or the second sensor 500, the brightness of the light-emitting unit of the display panel is adjusted, which can also save battery power.

[0127] In one embodiment of this invention, adjusting the voltage difference across the sublayer of the photorefractive crystal material based on the light intensity information includes:

[0128] The voltage difference is adjusted based on the pre-obtained correspondence between different light intensity information and the voltage difference.

[0129] Optionally, this correspondence can be obtained through testing before the display device leaves the factory.

[0130] The display device described in this embodiment utilizes the material properties of photorefractive crystals. By applying a specific electric field to the sublayer of the photorefractive crystal material, a transparent "light channel" is formed at the corresponding position of the under-screen camera, thereby increasing light transmittance and enabling the camera to take pictures through the screen. This achieves a perfect combination of full-screen display and high-quality front-facing camera function, enhancing the user experience.

[0131] The display control method of the display device described in this embodiment of the present invention, as shown in FIG12, includes:

[0132] S1201, Obtain the current ambient light intensity information;

[0133] S1202, Based on the light intensity information, adjust the voltage difference across the sublayer of the photorefractive crystal material so that the refractive index of the sublayer of the photorefractive crystal material changes according to the change in the voltage difference.

[0134] The display control method described in this embodiment adjusts the voltage difference across the sublayer of the photorefractive crystal material based on the ambient light intensity information. This allows for dynamic adjustment of the refractive index of the sublayer based on the monitored light intensity information, enabling precise control of the shape, size, and position of the light channel corresponding to the under-display camera according to the external light conditions. This allows the under-display camera to accurately capture incident light and increase the light flux incident on the under-display camera.

[0135] Optionally, in step 1202, adjusting the voltage difference across the sublayer of the photorefractive crystal material based on the light intensity information includes:

[0136] The voltage difference is adjusted based on the pre-obtained correspondence between different light intensity information and the voltage difference.

[0137] The above describes the preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A display module, characterized in that, The display panel includes: a substrate, comprising a display area and a peripheral area surrounding the display area, the display area including a first display area and a second display area, the second display area at least partially surrounding the first display area, the first display area having a higher transmittance than the second display area; a plurality of sub-pixels located in the display area, each of the plurality of sub-pixels including a pixel circuit and a light-emitting element, the pixel circuit being configured to drive the light-emitting element to emit light; the plurality of sub-pixels including a plurality of first sub-pixels located in the first display area and a plurality of second sub-pixels located in the second display area; a dimming layer disposed in the first display area and located on the side of the plurality of first sub-pixels away from the substrate, the dimming layer having a dimming structure, the dimming structure including a photorefractive crystal material sublayer, the dimming structure being configured such that light incident on the first display area can be focused onto a first sensor; the first sensor located on the non-light-emitting side of the display panel, and the orthographic projection of the first sensor on the substrate at least partially overlapping the orthographic projection of the first display area on the substrate.

2. The display module according to claim 1, characterized in that, The first display area includes a plurality of spaced-apart pixel areas and a light-transmitting area located between the plurality of pixel areas; wherein, the orthographic projection of the dimming structure onto the first display area is located in the light-transmitting area, the pixel areas, or completely covers the first display area.

3. The display module according to claim 2, characterized in that, The first sub-pixel includes a first pixel circuit and a first light-emitting element, and both the first pixel circuit and the first light-emitting element are disposed in the pixel area. The orthographic projection of the first light-emitting element on the substrate and the orthographic projection of the corresponding first pixel circuit on the substrate at least partially overlap.

4. The display module according to claim 2, characterized in that, The first sub-pixel includes a first pixel circuit and a first light-emitting element. The first light-emitting element is disposed in the pixel area, and the corresponding first pixel circuit is disposed in the second display area. The first light-emitting element and the corresponding first pixel circuit are electrically connected through a connecting line.

5. The display module according to claim 1, characterized in that, The dimming structure also includes a first electrode sublayer and a second electrode sublayer located on opposite sides of the photorefractive crystal material sublayer.

6. The display module according to claim 2, characterized in that, The dimming layer is provided with a plurality of dimming structures, and the orthographic projection of each dimming structure in the first display area is located in the light-transmitting area or the pixel area.

7. The display module according to claim 1, characterized in that, The light-emitting element includes an anode layer, a cathode layer, and a light-emitting layer located between the anode layer and the cathode layer, with the cathode layer disposed on the side of the light-emitting layer away from the substrate; wherein, the dimming layer is connected to the cathode layer and is disposed on the side of the cathode layer away from the light-emitting layer.

8. The display module according to claim 1, characterized in that, The display module further includes an encapsulation layer covering the multiple sub-pixels, the encapsulation layer comprising multiple sub-encapsulation layers with different refractive indices; wherein the dimming layer is located between two adjacent sub-encapsulation layers.

9. The display module according to claim 1, characterized in that, The orthographic projection of the first sensor onto the substrate is located inside the orthographic projection of the first display area onto the substrate.

10. The display module according to claim 1, characterized in that, The first sensor includes a camera and / or an infrared sensor.

11. A display device, characterized in that, Includes the display module as described in any one of claims 1 to 10.

12. The display device according to claim 11, characterized in that, The display device further includes: a middle frame disposed around the side of the display module, and a light-transmitting hole is provided on the middle frame; and a second sensor disposed at the light-transmitting hole of the middle frame.

Images