Display panel, preparation method thereof and display device

Abstract

The invention discloses a display panel, a preparation method thereof and a display device. The display panel comprises a display side and a non-display side which are oppositely arranged; in the plane perpendicular to the plane where the display panel is located, the display panel comprises a first light adjusting structure and a photoelectric conversion assembly which are arranged in a stacked mode, and the first light adjusting structure is closer to the display side than the photoelectric conversion assembly; the photoelectric conversion assembly comprises a plurality of photoresist patterns and a plurality of photoelectric sensors, and the plurality of photoresist patterns are closer to the display side than the plurality of photoelectric sensors; the light resistance pattern is configured to only allow visible light of a set color to be emitted to the photoelectric sensor; the set color is one of three primary colors; the orthographic projection of the first light adjusting structure and the orthographic projection of the at least one photoresist pattern on the plane where the display panel is located are at least partially overlapped, in the visible light range, the transmissivity of the first light adjusting structure is larger than the reflectivity, and the detection accuracy of the photoelectric conversion assembly can be improved.

Description

Technical Field

[0001] This article relates to but is not limited to the field of display technology, and in particular to a display panel and a manufacturing method thereof, and a display device. Background Art

[0002] With the continuous advancement of technology, the design of electronic products is becoming increasingly intelligent. Currently, some display devices have integrated light sensing functions, often using photoelectric sensors to detect ambient light. However, the photoelectric sensors integrated into existing display devices have poor ambient light detection accuracy. Summary of the Invention

[0003] The embodiments of the present disclosure provide a display panel and a method for manufacturing the same, as well as a display device, which can improve the accuracy of photoelectric conversion component detection.

[0004] In one aspect, an embodiment of the present disclosure provides a display panel comprising a display side and a non-display side disposed opposite to each other; in a plane perpendicular to the plane of the display panel, the display panel comprises a first light modulation structure and a photoelectric conversion component stacked together, with the first light modulation structure being closer to the display side than the photoelectric conversion component;

[0005] The photoelectric conversion assembly includes a plurality of light-blocking patterns and a plurality of photosensors, wherein the plurality of light-blocking patterns are closer to the display side than the plurality of photosensors; the light-blocking patterns are configured to allow only visible light of a set color to be emitted toward the photosensors; the set color is one of the three primary colors;

[0006] The first light regulating structure at least partially overlaps with an orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located. In the visible light range, the transmittance of the first light regulating structure is greater than the reflectivity.

[0007] In an exemplary embodiment, the orthographic projection of the first light-regulating structure on the plane where the display panel is located covers the orthographic projections of the plurality of light-resisting patterns on the plane where the display panel is located.

[0008] In an exemplary embodiment, the first light regulating structure includes a plurality of film layers stacked together, the plurality of film layers including a plurality of first film layers and at least one second film layer, and the first film layers and the second film layers are alternately arranged; the refractive index of the first film layer is less than the refractive index of the second film layer.

[0009] In an exemplary embodiment, the film layer closest to the photoelectric conversion element and the film layer farthest from the photoelectric conversion element among the plurality of film layers are both the first film layer.

[0010] In an exemplary embodiment, within the visible light range, the refractive index of the first film layer is in a range of 1.3 to 1.5, and the refractive index of the second film layer is in a range of 1.6 to 2.5.

[0011] In an exemplary embodiment, the thickness of the first light-modulating structure ranges from 200 nanometers to 300 nanometers.

[0012] In an exemplary embodiment, the display panel includes a display area and a frame area surrounding the display area; the display area includes a non-display area, and the photoelectric conversion component is located in the non-display area;

[0013] The display panel also includes a stacked ink layer and a cover layer, the ink layer and the first light regulating structure are both located on the cover layer, and the ink layer is located on the side of the cover layer away from the display side; the first light regulating structure is located on the side of the cover layer close to the display side, or on the side of the cover layer away from the display side, or the display panel includes two first light regulating structures, and the two first light regulating structures are respectively located on opposite sides of the cover layer.

[0014] In an exemplary embodiment, the ink layer includes an inner boundary and an outer boundary, wherein the outer boundary surrounds the outer side of the inner boundary; the photoelectric conversion component includes a plurality of components, each of which includes the photoresist pattern and the photoelectric sensor; the display panel further includes a black matrix, the black matrix having a plurality of openings, and the plurality of openings are arranged in pairs with the plurality of components, and the openings expose portions of the photoresist pattern of the paired components; a distance range H between at least one of the openings and the inner boundary along a direction parallel to the plane of the display panel satisfies the following formula (1):

[0015] H= L1*tan(arcsin(sinβ / n))+ L2 (1)

[0016] In the above formula, β is the maximum incident angle of light detected by the component, n ranges from 1.5 to 1.6, L1 is the distance between the surface of the cover layer away from the display side and the surface of the component close to the display side along the direction perpendicular to the plane of the display panel; L2 ranges from 0.13 mm to 0.15 mm.

[0017] In an exemplary embodiment, the plurality of components include a first component, a second component, and a third component, and the plurality of photoresist patterns include a first photoresist pattern, a second photoresist pattern, and a third photoresist pattern; the first component includes the first photoresist pattern, which is configured to allow only visible light in a red wavelength band to irradiate the photosensor of the first component; the second component includes the second photoresist pattern, which is configured to allow only visible light in a green wavelength band to irradiate the photosensor of the second component; the third component includes the third photoresist pattern, which is configured to allow only visible light in a blue wavelength band to irradiate the photosensor of the third component;

[0018] The openings arranged in pair with the first component, the openings arranged in pair with the second component, and the openings arranged in pair with the third component are all spaced apart from the inner boundary by a distance H in a direction parallel to the plane where the display panel is located.

[0019] In an exemplary embodiment, the display panel also includes a polarizer, and the polarizer is located between the photoelectric conversion component and the first light adjustment structure; the display panel also includes a second light adjustment structure and a third light adjustment structure, and the second light adjustment structure and the third light adjustment structure are respectively located on opposite sides of the polarizer, and the second light adjustment structure and the third light adjustment structure are an integral structure with the polarizer; at least one of the second light adjustment structure and the third light adjustment structure at least partially overlaps with the orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located, and in the visible light range, the transmittance of the second light adjustment structure is greater than the reflectivity, and the transmittance of the third light adjustment structure is greater than the reflectivity.

[0020] In an exemplary embodiment, the polarizer includes a substrate, a first protective film, and a second protective film that are stacked, and the first protective film and the second protective film are respectively located on opposite sides of the substrate; the second light-regulating structure is an integral structure with one of the first protective film and the second protective film, and the third light-regulating structure is an integral structure with the other of the first protective film and the second protective film; the material of the first protective film and the second protective film both includes triacetyl cellulose.

[0021] In an exemplary embodiment, the display panel further includes a polarizer, and the polarizer is located between the photoelectric conversion component and the first light adjustment structure; the display panel further includes a second light adjustment structure and a third light adjustment structure, and the second light adjustment structure and the third light adjustment structure are respectively located on opposite sides of the polarizer, and the second light adjustment structure and the third light adjustment structure are an integral structure with the polarizer; at least one of the second light adjustment structure and the third light adjustment structure at least partially overlaps with the orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located, and in the visible light range, the transmittance of the second light adjustment structure is greater than the reflectance, and the transmittance of the third light adjustment structure is greater than the reflectance.

[0022] In an exemplary embodiment, the display panel includes a display area and a border area surrounding the display area; the display area includes a first area and a second area, the orthographic projections of the first area and the second area on the plane where the display panel is located do not overlap, and the light transmittance of the second area is higher than the light transmittance of the first area; the first area includes a non-display area, and the photoelectric conversion component is located in the non-display area.

[0023] In an exemplary embodiment, the photoelectric conversion component includes a plurality of components, each of which includes the photoresist pattern and the photosensor; the plurality of components include a first component, a second component, and a third component, and the plurality of photoresist patterns include a first photoresist pattern, a second photoresist pattern, and a third photoresist pattern; the first component includes the first photoresist pattern, which is configured to allow only visible light in a red band to irradiate the photosensor of the first component; the second component includes the second photoresist pattern, which is configured to allow only visible light in a green band to irradiate the photosensor of the second component; the third component includes the third photoresist pattern, which is configured to allow only visible light in a blue band to irradiate the photosensor of the third component;

[0024] The first component, the second component and the third component are arranged along a first direction and located on one side of the second area along the second direction. The first direction intersects with the second direction and the plane formed is parallel to the plane where the display panel is located.

[0025] In an exemplary embodiment, the photoelectric conversion component includes a plurality of components, each of which includes the photoresist pattern and the photosensor; the plurality of components include a first component, a second component, and a third component, and the plurality of photoresist patterns include a first photoresist pattern, a second photoresist pattern, and a third photoresist pattern; the first component includes the first photoresist pattern, which is configured to allow only visible light in a red band to irradiate the photosensor of the first component; the second component includes the second photoresist pattern, which is configured to allow only visible light in a green band to irradiate the photosensor of the second component; the third component includes the third photoresist pattern, which is configured to allow only visible light in a blue band to irradiate the photosensor of the third component;

[0026] The first component, the second component and the third component are distributed around the second area.

[0027] In an exemplary embodiment, the display panel further includes a light-shielding layer, the orthographic projection of the light-shielding layer on the plane where the display panel is located is annular, and the light-shielding layer surrounds the second area, and the orthographic projection of the light-shielding layer on the plane where the display panel is located covers the orthographic projection of the photoelectric conversion component on the plane where the display panel is located; the ring width of the light-shielding layer ranges from 0.4 mm to 0.6 mm.

[0028] On the other hand, an embodiment of the present disclosure provides a display device, comprising the display panel as described in any of the aforementioned embodiments.

[0029] In another aspect, an embodiment of the present disclosure provides a method for manufacturing a display panel, comprising:

[0030] A first light modulation structure and a photoelectric conversion assembly are formed, wherein the photoelectric conversion assembly includes a plurality of light-blocking patterns and a plurality of photosensors, wherein the light-blocking patterns are configured to allow only visible light of a set color to be emitted toward the photosensors; the set color is one of three primary colors; and within the visible light range, the transmittance of the first light modulation structure is greater than the reflectivity;

[0031] The first light regulating structure and the photoelectric conversion component are stacked in a direction perpendicular to the plane of the display panel, and the plurality of light blocking patterns are located between the first light regulating structure and the plurality of photosensors;

[0032] Wherein, the first light regulating structure and the orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located at least partially overlap.

[0033] In an exemplary embodiment, the first light regulating structure includes a plurality of stacked film layers, the plurality of film layers including a plurality of first film layers and at least one second film layer; and forming the first light regulating structure includes:

[0034] A first film layer and a second film layer are alternately formed, and the refractive index of the first film layer is smaller than the refractive index of the second film layer; the film layer closest to the photoelectric conversion component and the film layer farthest from the photoelectric conversion component among the multiple film layers are both the first film layer.

[0035] In an exemplary embodiment, the display panel further includes a second light-regulating structure, a third light-regulating structure, and a polarizer; the polarizer includes a substrate, a first protective film, and a second protective film that are stacked, wherein the first protective film and the second protective film are respectively located on opposite sides of the substrate; the first protective film and the second protective film are both made of triacetyl cellulose; and the preparation method further includes:

[0036] placing the polarizer in a mixed solution for at least one dip coating, wherein the mixed solution includes an organic hybrid resin; a portion of the first protective film undergoes a dehydration condensation reaction with the organic hybrid resin to form the second light-regulating structure, and a portion of the second protective film undergoes a dehydration condensation reaction with the organic hybrid resin to form the third light-regulating structure;

[0037] The stacking of the first light regulating structure and the photoelectric conversion component in a direction perpendicular to the plane where the display panel is located includes: stacking the photoelectric conversion component, the third light regulating structure, the second light regulating structure and the first light regulating structure in sequence; at least one of the second light regulating structure and the third light regulating structure at least partially overlaps with the orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located, and within the visible light range, the transmittance of the second light regulating structure is greater than the reflectance, and the transmittance of the third light regulating structure is greater than the reflectance.

[0038] In an exemplary embodiment, the organic hybrid resin includes one or more compounds having the following structural formula:

[0039]

[0040] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. Other advantages of the present application can be realized and obtained by the solutions described in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0042] Figure 1 It is a schematic diagram of a partial cross-sectional structure of a photoelectric sensor component;

[0043] Figure 2 The present invention is a schematic diagram of a circuit principle of a photoelectric sensor component;

[0044] Figure 3 is a schematic front view of a display panel according to an embodiment of the present disclosure;

[0045] Figure 4A for Figure 3 A cross-sectional view at the position marked AA;

[0046] Figure 4B for Figure 3 A schematic cross-sectional view at the position marked BB;

[0047] Figure 5 A schematic diagram of a light propagation path of a portion of a display panel according to an embodiment of the present disclosure;

[0048] Figure 6A for Figure 3 A schematic cross-sectional view of another embodiment at position AA in FIG.

[0049] Figure 6B is a schematic cross-sectional view of a first light adjustment structure according to an embodiment of the present disclosure;

[0050] Figure 7A for Figure 3 A schematic cross-sectional view of another embodiment at position AA in FIG.

[0051] Figure 7B is a schematic cross-sectional view of a second polarizer assembly according to an embodiment of the present disclosure;

[0052] Figure 8 for Figure 3 A schematic cross-sectional view of another embodiment at position AA in FIG.

[0053] Figure 9 is a partial cross-sectional schematic diagram of a display device according to an embodiment of the present disclosure;

[0054] Figure 10A is a schematic cross-sectional view of a stacked structure according to an embodiment of the present disclosure;

[0055] Figure 10B A schematic diagram of dip coating of a laminated structure according to an embodiment of the present disclosure;

[0056] Figure 10C A schematic cross-sectional view of a stacked structure forming a second light regulating structure according to an embodiment of the present disclosure;

[0057] Figure 10D is a cross-sectional schematic diagram of forming a second polarizer assembly according to an embodiment of the present disclosure;

[0058] Figure 11 is a partial enlarged front view schematic diagram of a display panel according to another embodiment of the present disclosure;

[0059] Figure 12 for Figure 11 A cross-sectional view at the position marked CC;

[0060] Figure 13 FIG2 is a partial cross-sectional schematic diagram of a display device according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The embodiments can be implemented in a variety of different forms. A person of ordinary skill in the art can easily understand the fact that the method and content can be transformed into one or more forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited to the contents described in the following embodiments. In the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other in any way.

[0062] In the drawings, the size of one or more components, layer thicknesses, or regions may be exaggerated for clarity. Therefore, one embodiment of the present disclosure is not necessarily limited to these dimensions, and the shapes and sizes of components in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate idealized examples, and one embodiment of the present disclosure is not limited to the shapes or values shown in the drawings.

[0063] The ordinal numbers such as "first," "second," and "third" in this disclosure are provided to avoid confusion among constituent elements, and are not intended to limit the number. The "plurality" in this disclosure includes two or more.

[0064] In this disclosure, for convenience, words and phrases indicating orientation or positional relationships, such as "middle," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," and "outside," are used to illustrate the positional relationships of constituent elements with reference to the accompanying drawings. This is merely for the convenience of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation of this disclosure. The positional relationships of constituent elements are appropriately changed according to the direction in which the constituent elements are described. Therefore, the words and phrases are not limited to those described in the specification and can be appropriately replaced according to the circumstances.

[0065] In this disclosure, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct connections, indirect connections through intermediaries, or internal communication between two components. Those skilled in the art will understand the meaning of these terms in this disclosure based on the specific circumstances.

[0066] In this disclosure, a transistor refers to a device comprising at least three terminals: a gate electrode, a drain electrode, and a source electrode. A transistor has a channel region between a drain electrode (drain electrode terminal, drain region, or drain) and a source electrode (source electrode terminal, source region, or source), and current can flow through the drain electrode, the channel region, and the source electrode. In this disclosure, the channel region refers to the region through which current primarily flows.

[0067] In the present disclosure, the first electrode may be a drain electrode and the second electrode may be a source electrode, or vice versa. The functions of "source electrode" and "drain electrode" may be interchanged when using transistors with opposite polarity or when the direction of current changes during circuit operation. Therefore, in the present disclosure, "source electrode" and "drain electrode" may be interchanged.

[0068] In this disclosure, "electrically connected" includes components connected together via an element having some electrical function. There are no particular limitations on the "element having some electrical function" as long as it enables transmission of electrical signals between the connected components. Examples of "element having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other elements having one or more functions.

[0069] In this disclosure, "parallel" refers to a state where the angle formed by two straight lines is greater than -10° and less than 10°, and thus includes a state where the angle is greater than -5° and less than 5°. Furthermore, "perpendicular" refers to a state where the angle formed by two straight lines is greater than 80° and less than 100°, and thus includes a state where the angle is greater than 85° and less than 95°.

[0070] In this disclosure, the terms "film" and "layer" may be interchanged. For example, "conductive layer" may be replaced with "conductive film." Similarly, "insulating film" may be replaced with "insulating layer."

[0071] The term "about" in the present disclosure refers to a numerical value that is not strictly defined and allows for process and measurement errors.

[0072] Figure 1 The figure is a schematic diagram of the partial cross-section structure of a photoelectric sensor component. Figure 1 The figure only illustrates a portion of the structure of the photosensor assembly. The photosensor assembly may include a substrate 10, a photosensor layer 11 stacked on the substrate 10, and a photoresist layer 13. However, the photosensor assembly may also include other film layer structures, which are not limited to this. The photosensor layer 11 may include a plurality of photosensors arranged side by side. The plurality of photosensors may include a first photosensor 11-1, a second photosensor 11-2, a third photosensor 11-3, and a calibration photosensor 11-4.

[0073] The photoresist layer 13 may include multiple photoresist patterns arranged side by side. The photoresist patterns at least partially overlap with the orthographic projections of the photosensors on the plane of the substrate 10. The photoresist patterns can filter light to allow light of specific wavelengths to enter the corresponding photosensors. The multiple photoresist patterns may include a first photoresist pattern 13-1, a second photoresist pattern 13-2, and a third photoresist pattern 13-3. The first photoresist pattern 13-1 at least partially overlaps with the orthographic projection of the first photosensor 11-1 on the plane of the substrate 10. The first photoresist pattern 13-1 is configured to only allow visible light in the red wavelength band to reach the first photosensor 11-1, while blocking visible light outside the red wavelength band, so that the first photosensor 11-1 can only perceive red light information. The second photoresist pattern 13-2 at least partially overlaps with the orthographic projection of the second photosensor 11-2 on the plane of the substrate 10. The second photoresist pattern 13-2 is configured to allow only visible light in the green band to reach the second photosensor 11-2, while blocking visible light outside the green band, so that the second photosensor 11-2 can only sense green light information. The third photoresist pattern 13-3 at least partially overlaps with the orthographic projection of the third photosensor 11-3 on the plane of the substrate 10. The third photoresist pattern 13-3 is configured to allow only visible light in the blue band to reach the third photosensor 11-3, while blocking visible light outside the blue band, so that the third photosensor 11-3 can only sense blue light information. The photoresist layer 13 may further include a calibration pattern 13-4. The calibration pattern 13-4 at least partially overlaps with the orthographic projection of the calibration photosensor 11-4 on the plane of the substrate 10. The calibration pattern 13-4 is configured to absorb visible light to prevent visible light from reaching the calibration photosensor 11-4.

[0074] Figure 2 The figure is a schematic diagram of the circuit principle of a photoelectric sensor component. Figure 2 As shown, each photosensor may include multiple phototransistors, each phototransistor including a source, a drain, and a gate electrode. For example, each photosensor may include three phototransistors. The first photosensor 11-1 includes a first phototransistor, the second photosensor 11-2 includes a second phototransistor, the third photosensor 11-3 includes a third phototransistor, and the calibration photosensor 11-4 includes a fourth phototransistor.

[0075] like Figure 2As shown, the photosensor assembly may further include a plurality of signal transmission lines, which may include: a first control signal line G1, a second control signal line G2, a first voltage transmission line S1, a second voltage transmission line S2, a first output line LR, a second output line LG, a third output line LB, and a fourth output line LD. The first control signal line G1 and the second control signal line G2 are both connected to the gate electrodes of the first phototransistor, the second phototransistor, the third phototransistor, and the fourth phototransistor to control the first phototransistor, the second phototransistor, the third phototransistor, and the fourth phototransistor to be turned on or off. In the embodiment of the present disclosure, by providing two control signal lines, the first control signal line G1 and the second control signal line G2, the reliability of the control can be improved. In the event that one of the first control signal line G1 and the second control signal line G2 fails, the other control signal line can still be used to control the phototransistor.

[0076] The first voltage transmission line S1 and the second voltage transmission line S2 are both connected to the source electrodes of the first phototransistor, the second phototransistor, the third phototransistor, and the fourth phototransistor, for transmitting voltage to the source electrodes of the first phototransistor, the second phototransistor, the third phototransistor, and the fourth phototransistor. In the embodiment of the present disclosure, by providing two voltage transmission lines, the first voltage transmission line S1 and the second voltage transmission line S2, the reliability of voltage transmission to the source electrodes of the phototransistors can be improved. In the event that one of the first voltage transmission line S1 and the second voltage transmission line S2 fails, the other voltage transmission line can still be used to transmit voltage to the source electrodes of the phototransistors.

[0077] One end of a first output line LR is connected to the drain of the first phototransistor, and the other end of the first output line LR is used to output the electrical signal converted from red light. One end of a second output line LG is connected to the drain of the second phototransistor, and the other end of the second output line LG is used to output the electrical signal converted from green light. One end of a third output line LB is connected to the drain of the third phototransistor, and the other end of the third output line LB is used to output the electrical signal converted from blue light. One end of a fourth output line LD is connected to the drain of the fourth phototransistor, and the other end of the fourth output line LD is used to provide a calibration electrical signal.

[0078] When the photoelectric sensor is not working, the first voltage transmission line S1 and the second voltage transmission line S2 will transmit voltage to the source of the first phototransistor, the second phototransistor, the third phototransistor, and the fourth phototransistor, and the drain of the first phototransistor, the second phototransistor, the third phototransistor, and the fourth phototransistor will generate a certain leakage current. In other words, the photoelectric sensor itself has a current drift phenomenon. The leakage current generated by the current drift phenomenon will be converted into an interference electrical signal. The interference electrical signal is not an electrical signal converted from light. Therefore, the photoelectric sensor component needs to be corrected to eliminate the influence of the interference electrical signal on the light information detection. By designing a calibration photoelectric sensor 11-4, the electrical signals detected by the first photoelectric sensor 11-1, the second photoelectric sensor 11-2, and the third photoelectric sensor 11-3 are respectively compared with the electrical signal detected by the calibration photoelectric sensor 11-4, and the influence of the interference electrical signal on the light information detection can be eliminated.

[0079] However, the light that strikes the photosensor assembly includes not only ambient light but also reflected light from components within the display device. This reflected light also undergoes photoelectric conversion. However, due to the design of calibration pattern 13-4, calibration photosensor 11-4 cannot receive the reflected light from components within the display device. Consequently, conventional photosensor assemblies are unable to eliminate the influence of reflected light from components within the display device on light detection results. Consequently, conventional display devices suffer from poor ambient light detection accuracy.

[0080] Therefore, an embodiment of the present disclosure provides a display panel including a display side and a non-display side disposed opposite to each other; in a plane perpendicular to the plane of the display panel, the display panel includes a first light modulation structure and a photoelectric conversion component stacked together, with the first light modulation structure being closer to the display side than the photoelectric conversion component;

[0081] The photoelectric conversion assembly includes a plurality of light-blocking patterns and a plurality of photosensors, wherein the plurality of light-blocking patterns are closer to the display side than the plurality of photosensors; the light-blocking patterns are configured to allow only visible light of a set color to be emitted toward the photosensors; the set color is one of the three primary colors;

[0082] The first light regulating structure at least partially overlaps with an orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located. In the visible light range, the transmittance of the first light regulating structure is greater than the reflectivity.

[0083] In an embodiment of the present disclosure, a first light regulating structure is provided, and the first light regulating structure at least partially overlaps with the orthographic projection of at least one light blocking pattern on the plane where the display panel is located. In the visible light range, the transmittance of the first light regulating structure is set to be greater than the reflectivity, which can reduce the influence of the reflected light inside the display panel on the detection results of the photoelectric conversion component and improve the detection accuracy.

[0084] During the development of a display device, the inventors discovered that while the reflectivity R% of the display's internal components remains constant, the reflected light varies under different brightness levels. For example, under a white screen, the reflected light intensity is L255*R%. Under a black screen, the reflected light intensity is L0*R%. L0 represents the brightness of the display device under a black screen, and L255 represents the brightness of the display device under a white screen.

[0085] Under different brightness levels, the ambient light values (Lux) detected by the photoelectric conversion component are also different, as shown in the following Table (1). According to Table (1), when the external ambient light remains unchanged, the higher the brightness of the display device, the greater the ambient light value detected by the photoelectric conversion component, and the lower the detection accuracy. In Table (1), the ambient light value is 300 lux, the current is the current of the backlight unit in the display device, in mA, screen 1 is a black screen, screen 2 is a 64-grayscale screen, screen 3 is a 127-grayscale screen, and screen 4 is a white screen.

[0086] Table (1)

[0087]

[0088] Figure 3 FIG. 1 is a schematic diagram of a front view of a display panel according to an embodiment of the present disclosure. Figure 3 As shown, the display panel can be a flat panel for displaying an image. The display panel can also be called a screen. For example, the display panel can be a liquid crystal display panel or an organic light emitting diode (OLED) display panel, etc., which is not limited in this disclosure. The display panel may include a display area AA and a frame area BB located around the display area AA. The frame area BB may include a first frame area located on one side of the display area AA and a second frame area located on the other side of the display area AA. For example, the first frame area may include the bottom frame of the display panel, and the second frame area may include the top frame, left frame, and right frame of the display panel.

[0089] The display panel may have a display side and a non-display side that are relatively arranged. Among them, the display side may be the side of the display panel that can display an image. When the human eye is on the display side, it can see the image displayed by the display panel. The sensor for the camera of the display device may be arranged on the non-display side of the display panel, so the sensor for the camera may also be called an under-screen sensor. Since the under-screen sensor needs to receive light signals from the outside world that pass through the display panel, the display panel needs to have a higher light transmittance in the area corresponding to the under-screen sensor. The display panel in the embodiment of the present disclosure is not limited to being applicable to display devices with under-screen cameras (Full Display with Camera, abbreviated as FDC), but can also be applied to other display devices with photoelectric conversion components.

[0090] like Figure 3 As shown, the display area AA may include a first area AA1 and a second area AA2. The orthographic projections of the first and second areas AA1 and AA2 on the plane of the display panel do not overlap. The first area AA1 is primarily used for displaying images and may include a non-display area and a pixel area. The pixel area is used for display, and the non-display area may surround the pixel area. The light transmittance of the second area AA2 is higher than that of the first area AA1. The second area AA2 may be used for displaying images or not. The orthographic projection of the under-screen sensor on the plane of the display panel at least partially overlaps with the orthographic projection of the second area AA2 on the plane of the display panel, allowing more light to pass through the display panel and be received by the under-screen sensor. For example, a portion of the orthographic projection of the under-screen sensor on the plane of the display panel lies within the orthographic projection of the second area AA2 on the plane of the display panel. Alternatively, the entire orthographic projection of the under-screen sensor on the plane of the display panel lies within the orthographic projection of the second area AA2 on the plane of the display panel. Alternatively, the orthographic projection of the under-screen sensor's light-sensitive window on the plane of the display panel lies within the orthographic projection of the second area AA2 on the plane of the display panel.

[0091] In an exemplary embodiment, the first area AA1 may be an area of the display area AA excluding the second area AA2 .

[0092] In one exemplary embodiment, the first area AA1 may surround at least one side of the second area AA2. For example, the second area AA2 may be located in the top center of the display area AA, and the first area AA1 may surround the second area AA2. For example, the second area AA2 may be located in other locations, such as the upper left or upper right corner of the display area AA, but this disclosure is not limited to this.

[0093] In one exemplary embodiment, the orthographic projection of the display area AA on the plane where the display panel is located can be a rectangle, such as a rounded rectangle. The orthographic projection of the second area AA2 on the plane where the display panel is located can be a circle, an ellipse, a rectangle, a pentagon, a hexagon, etc., which is not limited in this disclosure.

[0094] In an exemplary embodiment, the pixel area of the first area AA1 may be provided with a plurality of pixel units, and the pixel unit may include three sub-pixels. For example, the three sub-pixels are a first sub-pixel, a second sub-pixel, and a third sub-pixel arranged in sequence along the first direction X. The first sub-pixel, the second sub-pixel, and the third sub-pixel may be a blue sub-pixel, a red sub-pixel, and a green sub-pixel, respectively. For example, the three sub-pixels may be arranged in the order of a blue sub-pixel, a green sub-pixel, and a red sub-pixel. In the embodiment of the present disclosure, the first direction X intersects with the second direction Y and the plane formed is parallel to the plane where the display panel is located. For example, the first direction X and the second direction Y are perpendicular to each other.

[0095] In an exemplary embodiment, at least one sub-pixel may include a pixel electrode and a common electrode, and the orthographic projections of the pixel electrode and the common electrode of the sub-pixel on the plane where the display panel is located at least partially overlap. The common electrodes of multiple sub-pixels may be an integral structure. The sub-pixel may also include a transistor. The transistor may include a gate electrode, a first electrode, and a second electrode. The gate electrode may be electrically connected to a scan signal line, the first electrode may be electrically connected to a data signal line, and the second electrode may be electrically connected to the pixel electrode of a sub-pixel. The transistor may be configured to provide a data signal transmitted by the data signal line to the pixel electrode of the sub-pixel under the control of the scan signal line.

[0096] In an exemplary embodiment, Figure 3 As shown, the display panel may further include a photoelectric conversion assembly 30 located in the non-display area of the display area AA. The photoelectric conversion assembly 30 may be located between the second area AA2 and the border area BB, and the photoelectric conversion assembly 30 may be located on one side of the second area AA2 along the second direction Y. The photoelectric conversion assembly 30 may include multiple components and a calibration assembly 34. The multiple components may include a first component 31, a second component 32, and a third component 33. The first component 31 is configured to sense only red light information, the second component 32 is configured to sense only green light information, and the third component 33 is configured to sense only blue light information. The calibration assembly 34 is configured to calibrate the first component 31, the second component 32, and the third component 33.

[0097] In an exemplary embodiment, Figure 3As shown, the first component 31, the second component 32, the third component 33, and the calibration component 34 can be arranged along the first direction X. For example, the first component 31, the second component 32, the third component 33, and the calibration component 34 can be arranged in sequence along the first direction X. Alternatively, the calibration component 34, the first component 31, the second component 32, and the third component 33 can be arranged in sequence along the first direction X.

[0098] In an exemplary embodiment, the first component 31, the second component 32, and the third component 33 can be arranged along the first direction X, and the calibration component 34 is located on one side of the first component 31, the second component 32, and the third component 33 along the second direction Y. For example, the first component 31, the second component 32, and the third component 33 can be arranged in sequence along the first direction X, and the calibration component 34 is located on one side of the first component 31, the second component 32, and the third component 33 along the second direction Y.

[0099] Figure 4A for Figure 3 The cross-sectional view at the position marked AA is shown in FIG. Figure 4A As shown, taking a liquid crystal display panel as an example, in a direction perpendicular to the plane of the display panel, that is, a third direction Z (also referred to as the thickness direction of the display panel), the display panel may include a first polarizer 20, an array substrate 21, a liquid crystal layer 22, a color filter substrate 23, a second polarizer 24, a glue layer 25, an ink layer 26, and a cover layer 27, which are stacked in sequence. The cover layer 27 is closer to the display side of the display panel than the first polarizer 20. For example, the cover layer 27 may be a glass cover or a film cover. The first polarizer 20 is configured to only allow light with its own polarization direction to pass through, blocking light from other directions, thereby directing polarized light toward the liquid crystal layer 22. The liquid crystal layer 22 includes liquid crystal molecules. Under the influence of an electric field, the liquid crystal molecules can change the vibration direction of polarized light so that the light matches the polarization direction of the second polarizer 24. The first polarizer 20, the liquid crystal layer 22, and the second polarizer 24 can work together to achieve light modulation and image display.

[0100] In an exemplary embodiment, the array substrate 21 may include a substrate and multiple conductive layers and multiple insulating layers disposed on the substrate. For example, the array substrate 21 may include a first conductive layer, a first insulating layer, a semiconductor layer, a second conductive layer, a second insulating layer, a third conductive layer, a third insulating layer, and a fourth conductive layer stacked sequentially on the substrate. The first conductive layer may include scan signal lines and gate electrodes of transistors located in the display area AA. For example, the scan signal lines and the gate electrodes may be interconnected and integrally formed. The semiconductor layer may include an active layer of the transistors located in the display area AA. The active layer may include a first region, a second region, and a channel region located between the first and second regions. The second conductive layer may include data signal lines located in the display area AA. The side of the data signal lines closer to the substrate may contact the side of the first region farther from the substrate. The third conductive layer may include pixel electrodes located in the display area AA. The pixel electrodes may be connected to the second region via vias provided in the second insulating layer. The fourth conductive layer may include a common electrode located in the display area AA. The pixel electrodes and the common electrode may be configured to generate an electric field that controls the deflection of liquid crystal molecules in the liquid crystal layer 22. The array substrate 21 may include other conductive layers, insulating layers, and semiconductor layers. The present disclosure does not limit the structure of the array substrate.

[0101] In an exemplary embodiment, Figure 4A As shown, the photoelectric conversion assembly 30 includes multiple components, including a first assembly 31. The first assembly 31 may include a first photosensor 311 and a first photoresist pattern 312. The first photosensor 311 may be located on the array substrate 21 near the liquid crystal layer 22 and may include at least one phototransistor. The first photoresist pattern 312 may be located on the color filter substrate 23 near the liquid crystal layer 22. The first photoresist pattern 312 at least partially overlaps with the orthographic projection of the first photosensor 311 on the plane of the display panel. The first photoresist pattern 312 is configured to only allow visible light in the red band to reach the first photosensor 311, while blocking visible light outside the red band. This allows the first assembly 31 to sense only red light information. For example, the orthographic projection of the first photoresist pattern 312 on the plane of the display panel overlaps the orthographic projection of the first photosensor 311 on the plane of the display panel.

[0102] In an exemplary embodiment, Figure 4AAs shown, the multiple components include a second component 32, which may include a second photosensor 321 and a second light-blocking pattern 322. The second photosensor 321 may be located on the array substrate 21 near the liquid crystal layer 22 and may include at least one phototransistor. The second light-blocking pattern 322 may be located on the color filter substrate 23 near the liquid crystal layer 22. The second light-blocking pattern 322 at least partially overlaps with the orthographic projection of the second photosensor 321 on the plane where the display panel resides. The second light-blocking pattern 322 is configured to only allow visible light in the green band to reach the second photosensor 321, while blocking visible light outside the green band, so that the second component 32 can only perceive green light information. For example, the orthographic projection of the second light-blocking pattern 322 on the plane where the display panel resides overlaps the orthographic projection of the second photosensor 321 on the plane where the display panel resides.

[0103] In an exemplary embodiment, Figure 4A As shown, the multiple components include a third component 33. The third component 33 may include a third photosensor 331 and a third photoresist pattern 332. The third photosensor 331 may be located on the array substrate 21 near the liquid crystal layer 22. The third photosensor 331 may include at least one phototransistor. The third photoresist pattern 332 may be located on the color filter substrate 23 near the liquid crystal layer 22. The third photoresist pattern 332 at least partially overlaps with the orthographic projection of the third photosensor 331 on the plane where the display panel resides. The third photoresist pattern 332 is configured to only allow visible light in the blue band to reach the third photosensor 331, while blocking visible light outside the blue band. This allows the third component 33 to sense only blue light information. For example, the orthographic projection of the third photoresist pattern 332 on the plane where the display panel resides overlaps the orthographic projection of the third photosensor 331 on the plane where the display panel resides.

[0104] In an exemplary embodiment, Figure 4AAs shown, the color filter substrate 23 may include a base substrate 231, a black matrix 232, and a color filter layer 233 located on the base substrate 231. The color filter layer 233 may include a red color filter, a green color filter, and a blue color filter. The red sub-pixel includes a red color filter, and the red color filter is configured to only allow visible light in the red band to be emitted. The green sub-pixel includes a green color filter, and the green color filter is configured to only allow visible light in the green band to be emitted. The blue sub-pixel includes a blue color filter, and the blue color filter is configured to only allow visible light in the blue band to be emitted. The first photoresist pattern 312, the second photoresist pattern 322, and the third photoresist pattern 332 may all be located on the base substrate 231. The first photoresist pattern 312 may be provided on the same layer as the red color filter, the second photoresist pattern 322 may be provided on the same layer as the green color filter, and the third photoresist pattern 332 may be provided on the same layer as the blue color filter. Placing the first photoresist pattern 312, the second photoresist pattern 322, and the third photoresist pattern 332 on the same layer as the color filter layer 233 can simplify the display panel manufacturing process and reduce manufacturing costs. In the embodiments of the present disclosure, "A and B are arranged on the same layer" means that A and B are formed simultaneously through the same patterning process.

[0105] In an exemplary embodiment, Figure 4A As shown, the black matrix 232 may have multiple openings K. The multiple openings K may penetrate the black matrix 232 along the third direction Z, and the openings K may expose a portion of the base substrate 231. The multiple openings K may be arranged in pairs with multiple components. At least a portion of the first photoresist pattern 312 may be located within the openings K. For example, a portion of the first photoresist pattern 312 is located within the openings K, and the remaining portion of the first photoresist pattern 312 is located on a side of the opening K closer to the liquid crystal layer 22. In the embodiment of the present disclosure, by providing the openings K, the influence of the black matrix 232 on the detection of visible light in the red band by the first component 31 can be avoided.

[0106] In an exemplary embodiment, Figure 4A As shown, at least a portion of the second photoresist pattern 322 can be located within the opening K. For example, a portion of the second photoresist pattern 322 is located within the opening K, and the remaining portion of the second photoresist pattern 322 is located on a side of the opening K closer to the liquid crystal layer 22. In the embodiment of the present disclosure, by providing the opening K, the influence of the black matrix 232 on the second component 32's detection of green-band visible light can be avoided.

[0107] In an exemplary embodiment, Figure 4A As shown, at least a portion of the third photoresist pattern 332 can be located within the opening K. For example, a portion of the third photoresist pattern 332 is located within the opening K, and the remaining portion of the third photoresist pattern 332 is located on a side of the opening K closer to the liquid crystal layer 22. In the embodiment of the present disclosure, by providing the opening K, the influence of the black matrix 232 on the detection of blue-band visible light by the third component 33 can be avoided.

[0108] In an exemplary embodiment, the opening K may be a circular hole, an elliptical hole, a rectangular hole, a hexagonal hole, etc. However, the present disclosure is not limited thereto.

[0109] In an exemplary embodiment, Figure 4A As shown, the orthographic projections of the ink layer 26 and the first photoresist pattern 312 , the second photoresist pattern 322 and the third photoresist pattern 332 on the plane where the display panel is located do not overlap, which can prevent the ink layer 26 from blocking visible light and thus avoid affecting the light detection accuracy of the photoelectric conversion component.

[0110] Figure 4B for Figure 3 The cross-sectional view at the position marked BB is shown in FIG. Figure 4B As shown, the photoelectric conversion assembly 30 may include a calibration assembly 34, which may include a calibration photosensor 341 and a calibration pattern 342. The calibration photosensor 341 may be located on the array substrate 21 and on a side close to the liquid crystal layer 22. The calibration photosensor 341 may include at least one phototransistor. The calibration pattern 342 may be located on the color filter substrate 23 and on a side close to the liquid crystal layer 22. The orthographic projections of the calibration photosensor 341 and the calibration pattern 342 on the plane where the display panel is located at least partially overlap, and the calibration pattern 342 is configured to absorb visible light to prevent visible light from irradiating the calibration photosensor 341. For example, the orthographic projection of the calibration pattern 342 on the plane where the display panel is located overlaps the orthographic projection of the calibration photosensor 341 on the plane where the display panel is located. The calibration pattern 342 is located on the base substrate 231 and is disposed on the same layer as the black matrix 232. For example, it may be an integrated structure connected to each other. In other words, part of the black matrix 232 can be reused as the calibration pattern 342 , which can simplify the structure of the display panel, simplify the manufacturing process, and reduce the manufacturing cost.

[0111] Figure 5 FIG. 1 is a schematic diagram of a light propagation path of a portion of a display panel according to an embodiment of the present disclosure. Figure 5 As shown, the structure of the display panel is simplified, and each component is not filled with color to facilitate identification. Figure 5 As shown, the ink layer 26 includes an inner boundary 26a and an outer boundary 26b, and the outer boundary 26b surrounds the outside of the inner boundary 26a. The opening K arranged in a pair with the first component 31 is at a distance L3 from the inner boundary 26a along the second direction Y, and the cover layer 27 is at a distance L1 from the side surface of the first component 31 close to the display side along the third direction Z. Then, tanα=L3 / L1, from which it can be concluded that L3=L1*tanα.

[0112] During the calculation process, the refractive indexes of the color filter substrate 23, the second polarizer 24, the adhesive layer 25, and the cover layer 27 are approximately the same and are recorded as n. Figure 5 As shown, β is the maximum incident angle of light that can be detected by the first component 31. β generally varies depending on the type of display device used by the display panel. α is the refraction angle corresponding to the refraction of light at the maximum incident angle.

[0113] According to optical principles, when light travels through two media with different refractive indices, its direction of transmission changes. For example, the refractive index of the medium through which the incident light passes is n1, the refractive index of the medium through which the reflected light passes is n2, the angle of incidence is θ1, and the angle of refraction is θ2, and the law of refraction is satisfied: n1*sinθ1 = n2*sinθ2.

[0114] like Figure 5 As shown, since the refractive index of air is approximately 1.0, n*sinα=sinβ, sinα=sinβ / n, and α=arcsin(sinβ / n). According to the above, L3=L1*tanα, so L3=L1*tan(arcsin(sinβ / n)).

[0115] Distance L3 is the result of theoretical calculation based on optical principles. In practice, the cumulative tolerance L2 caused by the assembly of components in the display panel must also be considered. Therefore, the distance range H1 between the opening K paired with the first component 31 and the inner boundary 26a along the second direction Y is: H1 = L3 + L2 = L1 * tan(arcsin(sinβ / n)) + L2. In the disclosed embodiment, by limiting the distance range between the opening K paired with the first component 31 and the inner boundary 26a, the first component 31 utilizes the ink layer 26 to absorb a portion of the reflected light from within the display panel while meeting the detection light angle requirements. This reduces the impact of the display panel's internal light on the detection results of the first component 31 and improves the accuracy of the detection of the first component 31.

[0116] In an exemplary embodiment, n may range from 1.5 to 1.6.

[0117] In an exemplary embodiment, L1 may range from 0.2 mm to 0.4 mm.

[0118] In an exemplary embodiment, L2 may range from 0.13 mm to 0.15 mm.

[0119] In one exemplary embodiment, the distance range H2 between the opening K paired with the second component 32 and the inner boundary 26a is defined along the second direction Y, where H2 = L3 + L2 = L1 * tan(arcsin(sinβ / n)) + L2. In the disclosed embodiment, by limiting the distance range between the opening K paired with the second component 32 and the inner boundary 26a, the second component 32 utilizes the ink layer 26 to absorb a portion of the reflected light from within the display panel while meeting the detection light angle requirements. This reduces the impact of the display panel's internal light on the detection results of the second component 32, thereby improving the detection accuracy of the second component 32.

[0120] In one exemplary embodiment, the distance range H3 between the opening K paired with the third component 33 and the inner boundary 26a is defined along the second direction Y, where H3 = L3 + L2 = L1 * tan(arcsin(sinβ / n)) + L2. In the disclosed embodiment, by limiting the distance range between the opening K paired with the third component 33 and the inner boundary 26a, the third component 33 utilizes the ink layer 26 to absorb a portion of the reflected light from within the display panel while meeting the detection light angle requirements. This reduces the impact of the display panel's internal light on the detection results of the third component 33, thereby improving the detection accuracy of the third component 33.

[0121] In an exemplary embodiment, the distance range H between at least one opening K and the inner boundary 26a along a direction parallel to the plane where the display panel is located satisfies the following equation (1):

[0122] H= L1*tan(arcsin(sinβ / n))+ L2 (1)

[0123] For example, the direction parallel to the plane where the display panel is located may be the second direction.

[0124] Figure 6A for Figure 3 A cross-sectional view of another embodiment at the position AA is shown in FIG. Figure 6AAs shown, the display panel may further include at least one first light modulating structure 40. The first light modulating structure 40 may be located on the side of the cover layer 27 closest to the liquid crystal layer 22, or on the side of the cover layer 27 farther from the liquid crystal layer 22. Alternatively, the display panel may include two first light modulating structures 40, one located on either side of the cover layer 27 along the third direction Z. The first light modulating structure 40 at least partially overlaps with the orthographic projection of the photoelectric conversion assembly 30 on the plane of the display panel, and at least partially overlaps with the orthographic projection of at least one of the first assembly 31, the second assembly 32, and the third assembly 33 on the plane of the display panel. The first light modulating structure 40 has a greater transmittance than reflectance for visible light. For example, the orthographic projection of the first light modulating structure 40 on the plane of the display panel overlaps the orthographic projections of the first assembly 31, the second assembly 32, and the third assembly 33 on the plane of the display panel. For example, the orthographic projection of the first light modulating structure 40 on the plane of the display panel overlaps the orthographic projections of the photoelectric conversion assembly 30 on the plane of the display panel. In the embodiment of the present disclosure, the first light adjustment structure 40 is used to increase the proportion of light emitted from the cover layer 27 and reduce the proportion reflected by the cover layer 27, thereby reducing the impact of the reflected light inside the display panel on the detection results of the photoelectric conversion component 30 and improving the detection accuracy of the photoelectric conversion component 30.

[0125] Figure 6B FIG. 1 is a cross-sectional diagram of a first light adjustment structure according to an embodiment of the present disclosure. Figure 6B As shown, the first light regulating structure 40 has a first surface and a second surface arranged relative to each other along the third direction Z. The first light regulating structure 40 may include a plurality of film layers arranged in a stacked manner, and the plurality of film layers may include a plurality of first film layers 41 and at least one second film layer 42, and the first film layers 41 and the second film layers 42 in the plurality of film layers are alternately arranged, and the refractive index of the first film layer 41 is less than the refractive index of the second film layer 42, and the film layers closest to and farthest from the cover layer 27 are both the first film layers 41. For example, the first light regulating structure 40 may include two first film layers 41 and one second film layer 42, and the second film layer 42 is located between the two first film layers 41. Alternatively, the first light regulating structure 40 may include four first film layers 41 and three second film layers 42, and the stacking manner is as follows: Figure 6B In the disclosed embodiment, by configuring the first light-regulating structure 40 as a stacked structure comprising film layers with different refractive indices, the reflected light from the first surface and the second surface can be canceled out. This reduces the reflected light between the color filter substrate 23 and the second polarizer 24, between the second polarizer 24 and the adhesive layer 25, and between the adhesive layer 25 and the cover layer 27. This increases the light transmittance, reduces the impact of the internal reflected light of the display panel on the detection results of the photoelectric conversion component 30, and improves the accuracy of light detection by the photoelectric conversion component 30.

[0126] In an exemplary embodiment, the material of the first film layer 41 may include one or more of silicon dioxide, magnesium fluoride, halogen oxide and aluminum oxide. In the visible light range, the refractive index of the first film layer 41 may range from 1.3 to 1.5. For example, the refractive index of the first film layer 41 may be 1.4. The material of the second film layer 42 may include any one or more of the following: oxides and nitrides. The oxides may include any one or more of the following: titanium dioxide, zirconium dioxide and niobium pentoxide. The nitrides may include silicon nitride. In the visible light range, the refractive index of the second film layer 42 may range from 1.6 to 2.5. For example, the refractive index of the second film layer 42 may be 2.1, or the refractive index of the second film layer 42 may be 2.0.

[0127] In one exemplary embodiment, the thickness of the first light regulating structure 40 can range from 200 nanometers to 300 nanometers. The first light regulating structure 40 has a first surface and a second surface arranged opposite each other along the third direction Z. When light is incident on the first light regulating structure 40 from the side close to the liquid crystal layer 22, the light is reflected from the first surface and the second surface. If the thickness of the first light regulating structure 40 is one-quarter wavelength (λ / 4), there is an optical path difference of half a wavelength (λ / 2) between the light reflected from the first surface and the light reflected from the second surface. According to the principle of optical interference, the two reflected lights have opposite phases and cancel each other out when superimposed, thereby reducing the reflected light incident on the photoelectric conversion component and improving the detection accuracy of the photoelectric conversion component.

[0128] Figure 7A for Figure 3 A cross-sectional view of another embodiment of the invention is shown in FIG. Figure 7AAs shown, the display panel may further include a second light regulating structure 50 and a third light regulating structure 60 arranged in a stacked manner. The second light regulating structure 50 and the third light regulating structure 60 may be located on opposite sides of the second polarizer 24. The orthographic projections of the second light regulating structure 50 and the third light regulating structure 60 on the plane where the display panel is located may overlap. The orthographic projection of the second light regulating structure 50 on the plane where the display panel is located at least partially overlaps with the orthographic projection of the photoelectric conversion component 30 on the plane where the display panel is located, and the orthographic projection of the second light regulating structure 50 on the plane where the display panel is located at least partially overlaps with the orthographic projection of at least one of the first component 31, the second component 32, and the third component 33 on the plane where the display panel is located. The transmittance of the second light regulating structure 50 and the third light regulating structure 60 for visible light is greater than the reflectivity. For example, the orthographic projections of the second light regulating structure 50 and the third light regulating structure 60 on the plane where the display panel are located both cover the orthographic projections of the first component 31, the second component 32, and the third component 33 on the plane where the display panel is located. For example, the orthographic projections of the second light regulating structure 50 and the third light regulating structure 60 on the plane of the display panel both overlap the orthographic projection of the photoelectric conversion assembly 30 on the plane of the display panel. In the disclosed embodiment, the use of the second light regulating structure 50 and the third light regulating structure 60 can increase the proportion of light emitted from the second polarizer 24 and reduce the proportion of light reflected by the second polarizer 24. This can reduce the impact of the internal reflected light of the display panel on the detection results of the photoelectric conversion assembly 30, thereby improving the accuracy of the detection of the photoelectric conversion assembly 30.

[0129] Figure 7B FIG. 1 is a cross-sectional view of a second polarizer assembly according to an embodiment of the present disclosure. Figure 7B As shown, the second polarizer assembly may include a release film 245, an adhesive layer 243, a third light-regulating structure 60, a second protective film 242, a substrate 240, a first protective film 241, a second light-regulating structure 50, and a protective film 244, which are stacked in sequence. During the assembly of the second polarizer assembly to the color filter substrate 23, the release film 245 may be removed, and the second polarizer 24, the second light-regulating structure 50, and the third light-regulating structure 60 may be bonded to the side of the color filter substrate 23 away from the liquid crystal layer 22 using the adhesive layer 243. The second polarizer 24 may include a second protective film 242, a substrate 240, and a first protective film 241.

[0130] In an exemplary embodiment, the material of the substrate 240 may include polyvinyl alcohol. The material of the second protective film 242 and the first protective film 241 may be the same. For example, they may both be triacetyl cellulose (Triacetyl Cellulose), which has excellent light stability. The second protective film 242 and the first protective film 241 may be treated with different or the same treatment methods. The treatment methods include ordinary treatment and special treatment. Special treatments include hardcoat (HC) treatment and 0-phase difference delay treatment. For example, the first protective film 241 may be treated with ordinary treatment, and the second protective film 242 may be treated with 0-phase difference delay treatment. The use of 0-phase difference delay treatment can make the second protective film 242 have better viewing angle, contrast and color deviation. The adhesive layer 243 may be a pressure sensitive adhesive (PSA) layer. The protective film 244 and the release film 245 may both be transparent films. For example, it may be a transparent silicone film or a transparent silicone PET film (Polyethylene terephthalate), etc.

[0131] Figure 8 for Figure 3 A cross-sectional view of another embodiment of the invention is shown at AA in FIG. Figure 8 As shown, the display panel may further include at least one first light regulating structure 40, a second light regulating structure 50, and a third light regulating structure 60. The first light regulating structure 40 may be located on the side of the cover layer 27 close to the liquid crystal layer 22, or the first light regulating structure 40 may be located on the side of the cover layer 27 away from the liquid crystal layer 22. Alternatively, the display panel includes two first light regulating structures 40, and the two first light regulating structures 40 are respectively located on both sides of the cover layer 27 along the third direction Z. The second light regulating structure 50 and the third light regulating structure 60 may be respectively located on opposite sides of the second polarizer 24. For descriptions of other structures, reference may be made to the introduction of the aforementioned embodiments, which will not be elaborated here. In the embodiment of the present disclosure, by providing the first light regulating structure 40, the second light regulating structure 50, and the third light regulating structure 60, the light inside the display panel can be transmitted through the second polarizer 24, the glue layer 25, and the cover layer 27 to a greater extent and emitted into the outside world, thereby reducing the influence of the reflected light inside the display panel on the detection results of the photoelectric conversion component 30. Since the reflected light from the inside of the display panel to the photoelectric conversion component 30 is reduced, the difference in light intensity reflected to the photoelectric conversion component 30 at different brightnesses of the display panel will also be reduced, thereby reducing the impact of changes in the reflected light from the inside of the display panel at different brightnesses on the fluctuations in the detection results of the photoelectric conversion component 30, thereby improving the accuracy of the detection of the photoelectric conversion component 30.

[0132] Figure 9FIG. 1 is a partial cross-sectional view of a display device according to an embodiment of the present disclosure. Figure 9 As shown, the display device may further include a backlight module 70, and the display panel and the backlight module 70 may be bonded together. The side of the first polarizer 20 away from the liquid crystal layer 22 may be bonded together with the backlight module 70. The display panel may be any of the display panels described in the foregoing embodiments. Figure 9 This is just a schematic diagram of the structure of a display device. The backlight module 70 may include a reflective sheet, a light guide plate, and an LED (Light Emitting Diode) light bar.

[0133] The following is an example explanation of the preparation process of a display device. The "patterning process" mentioned in this disclosure includes processes such as coating photoresist, mask exposure, development, etching, and stripping photoresist for metal materials, inorganic materials, or transparent conductive materials, and includes processes such as coating organic materials, mask exposure, and development for organic materials. Deposition can be achieved by any one or more of sputtering, evaporation, and chemical vapor deposition, coating can be achieved by any one or more of spraying, spin coating, and inkjet printing, and etching can be achieved by any one or more of dry etching and wet etching, which are not limited in this disclosure. "Thin film" refers to a thin film made by depositing, coating, or other processes on a substrate using a certain material. If the "thin film" does not require a patterning process during the entire production process, the "thin film" can also be called a "layer". If the "thin film" requires a patterning process during the entire production process, it is called a "thin film" before the patterning process and a "layer" after the patterning process. The "layer" after the patterning process contains at least one "pattern". The "thickness" of the film layer is the size of the film layer in the direction perpendicular to the display panel. In the exemplary embodiments of the present disclosure, "the orthographic projection of B is within the range of the orthographic projection of A" or "the orthographic projection of A contains the orthographic projection of B" means that the boundary of the orthographic projection of B falls within the boundary range of the orthographic projection of A, or the boundary of the orthographic projection of A overlaps with the boundary of the orthographic projection of B.

[0134] The manufacturing process of the display device may include:

[0135] (01) Prepare array substrate and color filter substrate.

[0136] In one exemplary embodiment, preparing the array substrate may include forming a first conductive film on a substrate, and then patterning the first conductive film using a patterning process to form a first conductive layer. The first conductive layer may include scan signal lines located in the display area AA and gate electrodes of transistors.

[0137] Subsequently, a first insulating film and a semiconductor film are sequentially formed and patterned using a patterning process so that the first insulating film forms a first insulating layer and the semiconductor film forms a semiconductor layer. The semiconductor layer may include an active layer of a transistor located in the display area AA.

[0138] Subsequently, a second conductive film is formed and patterned using a patterning process to form a second conductive layer. The second conductive layer may include data signal lines located in the display area AA, and the side of the data signal lines close to the substrate may contact the side of the active layer away from the substrate.

[0139] Subsequently, a second insulating film is formed and patterned using a patterning process to form a second insulating layer. The second insulating layer has a via hole, and the via hole exposes a portion of the active layer.

[0140] Subsequently, a third conductive film is formed and patterned using a patterning process to form a third conductive layer. The third conductive layer may include a pixel electrode located in the display area AA, and the pixel electrode may be connected to the active layer via a via hole provided in the second insulating layer.

[0141] Subsequently, a third insulating film and a fourth conductive film are sequentially formed and patterned using a patterning process, so that the third insulating film forms a third insulating layer and the fourth conductive film forms a fourth conductive layer. The fourth conductive layer may include a common electrode located in the display area AA.

[0142] In an exemplary embodiment, preparing the array substrate may further include installing the first photosensor 311 , the second photosensor 321 , the third photosensor 331 , and the calibration photosensor 341 .

[0143] In one exemplary embodiment, preparing a color filter substrate may include forming a black matrix film on a base substrate 231, and then patterning the black matrix film using a patterning process to form a black matrix 232 and a calibration pattern 342. The black matrix 232 has a plurality of hollow regions and a plurality of openings K. The plurality of hollow regions are used to accommodate the red, green, and blue color filters formed in subsequent processes, and the plurality of openings are used to accommodate the first photoresist pattern 312, the second photoresist pattern 322, and the third photoresist pattern 332 formed in subsequent processes.

[0144] Subsequently, a red thin film is formed and patterned using a patterning process to form a red color film and a first photoresist pattern 312 .

[0145] Subsequently, a green thin film is formed and patterned using a patterning process to form a green color filter and a second photoresist pattern 322 .

[0146] Subsequently, a blue thin film is formed and patterned using a patterning process to form a blue color filter and a third photoresist pattern 332 .

[0147] In an exemplary embodiment, the color filter layer 233 may include a red color filter, a green color filter, and a blue color filter. The method of preparing the color filter substrate may further include: preparing spacers after forming the color filter layer 233 .

[0148] (02) Align the array substrate and the color filter substrate, inject liquid crystal molecules and seal them to form a liquid crystal cell.

[0149] (03) Prepare a first polarizer assembly and a second polarizer assembly.

[0150] In an exemplary embodiment, preparing the second polarizer assembly may include: forming a laminated structure 24a including a substrate 240, a first protective film 241, and a second protective film 242, such as Figure 10A shown.

[0151] The laminated structure 24a is placed in the mixed solution and dipped at least once, such as Figure 10B As shown. For example, the stacked structure 24a can be dip-coated multiple times, for example, seven times. Between two adjacent dipping operations, the stacked structure 24a needs to be taken out and dried and cooled.

[0152] Subsequently, the laminated structure 24a is taken out and dried and cooled. The laminated structure 24a is dipped, dried, and cooled so that a portion of the first protective film 241 undergoes a dehydration condensation reaction with the organic hybrid resin in the mixed solution to form the second light-adjusting structure 50, and a portion of the second protective film 242 undergoes a dehydration condensation reaction with the organic hybrid resin in the mixed solution to form the third light-adjusting structure 60. Figure 10C shown.

[0153] Subsequently, a protective film 244 is formed on the side of the second light regulating structure 50 away from the third light regulating structure 60, and an adhesive layer 243 and a release film 245 are sequentially formed on the side of the third light regulating structure 60 away from the second light regulating structure 50. Subsequently, the laminated structure 24a is cut to obtain a plurality of second polarizer assemblies, such as Figure 10D shown.

[0154] In an exemplary embodiment, the mixed solution for dip-coating the stacked structure 24a may include an organic hybrid resin. The organic hybrid resin may include one or more compounds having the following structural formula:

[0155]

[0156] In one exemplary embodiment, the mixed solution for dip-coating the stacked structure 24a may be prepared by hydrolyzing ethyl orthosilicate to generate monosilicic acid and ethanol. The generated monosilicic acids, or the monosilicic acid and ethyl orthosilicate, then undergo condensation reactions, such as dehydration condensation and dealcoholization condensation, to form Si-O-Si bonds. The oligomers then polymerize to form a long-chain three-dimensional structure, thereby forming an organic hybrid resin.

[0157] In one exemplary embodiment, preparing the first polarizer assembly may include forming a release film 245, an adhesive layer 243, a second protective film 242, a substrate 240, a first protective film 241, and a protective film 244 that are stacked in sequence. The first polarizer 20 may include an adhesive layer 243, a second protective film 242, a substrate 240, a first protective film 241, and a protective film 244.

[0158] (04) Remove the release film from the first polarizer assembly and adhere the first polarizer 20 to the side of the array substrate 21 away from the liquid crystal layer 22. Remove the release film from the second polarizer assembly and adhere the second polarizer 24 together with the second light adjustment structure 50 and the third light adjustment structure 60 to the side of the color filter substrate 23 away from the liquid crystal layer 22.

[0159] (05) Prepare the cover layer assembly.

[0160] In an exemplary embodiment, preparing the cover layer assembly may include: forming an ink layer 26 on one side of a cover layer 27;

[0161] Subsequently, plasma-enhanced chemical vapor deposition (PECVD) is used to sequentially deposit the first film layer 41 and the second film layer 42 to form the first light-modulating structure 40. Using the same deposition method for sequential deposition simplifies the process, eliminating the need for constant equipment switching during the deposition process, which can complicate the process. In one example, the multiple film layers in the first light-modulating structure 40 can be sequentially deposited using evaporation or chemical vapor deposition (CVD).

[0162] (06) Using a laminating process, the cover layer assembly is laminated to the liquid crystal box obtained by the above operation. For example, a glue layer 25 is formed on the liquid crystal box obtained by the above operation, and then, using a laminating process, the cover layer assembly is laminated to the liquid crystal box.

[0163] (07) Prepare a backlight module and assemble the backlight module with the liquid crystal box obtained by the above operation.

[0164] The aforementioned preparation process of the display device is only an exemplary embodiment. In the actual production process, the preparation process can be adaptively adjusted. For example, the preparation of the cover layer assembly and the preparation of the backlight module can be carried out simultaneously, or the preparation of the first polarizer assembly and the second polarizer assembly can be carried out simultaneously with the preparation of the array substrate and the color film substrate, which can shorten the preparation cycle of the display device.

[0165] Figure 11 FIG1 is a partial enlarged front view diagram of a display panel according to another embodiment of the present disclosure. Figure 12 for Figure 11 The cross-sectional view at the CC mark in FIG. Figure 11 、 Figure 12 As shown, the photoelectric conversion component 30 can be located in the non-display area of the first area AA1, and the photoelectric conversion component 30 is arranged around the second area AA2. In the direction perpendicular to the plane where the display panel is located, the display panel may include a first polarizer 20, an array substrate 21, a liquid crystal layer 22, a color filter substrate 23, a second polarizer 24, a glue layer 25, an ink layer 26 and a cover layer 27 stacked in sequence. The cover layer 27 is closer to the display side of the display panel than the first polarizer 20. The orthographic projection of the ink layer 26 on the plane where the display panel is located does not overlap with the orthographic projection of the second area AA2 on the plane where the display panel is located. Figure 12 There is no ink layer 26 in the cross-sectional view shown, so as to avoid the ink layer 26 blocking external light and affecting the performance of the camera.

[0166] The display panel may further include a light-shielding layer 80. The orthographic projection of the light-shielding layer 80 on the plane where the display panel is located may be annular, for example, circular. The light-shielding layer 80 may surround the second area AA2, and the orthographic projection of the light-shielding layer 80 on the plane where the display panel is located does not overlap with the orthographic projection of the second area AA2 on the plane where the display panel is located. The orthographic projection of the light-shielding layer 80 on the plane where the display panel is located covers the orthographic projection of the photoelectric conversion assembly 30 on the plane where the display panel is located.

[0167] The display panel may further include at least one first light modulating structure 40. The first light modulating structure 40 may be located on the side of the cover layer 27 closest to the liquid crystal layer 22, or on the side of the cover layer 27 farther from the liquid crystal layer 22. Alternatively, the display panel may include two first light modulating structures 40, one located on either side of the cover layer 27 along the third direction Z. The first light modulating structure 40 at least partially overlaps with the orthographic projection of the photoelectric conversion assembly 30 on the plane of the display panel, and at least partially overlaps with the orthographic projection of at least one of the first assembly 31, the second assembly 32, and the third assembly 33 on the plane of the display panel. The first light modulating structure 40 has a greater transmittance than reflectance for visible light. For example, the orthographic projection of the first light modulating structure 40 on the plane of the display panel overlaps the orthographic projections of the first assembly 31, the second assembly 32, and the third assembly 33 on the plane of the display panel. For example, the orthographic projection of the first light modulating structure 40 on the plane of the display panel overlaps the orthographic projections of the photoelectric conversion assembly 30 on the plane of the display panel. In the embodiment of the present disclosure, the first light adjustment structure 40 is used to increase the proportion of light emitted from the cover layer 27 and reduce the proportion reflected by the cover layer 27, thereby reducing the impact of the reflected light inside the display panel on the detection results of the photoelectric conversion component 30 and improving the detection accuracy of the photoelectric conversion component 30.

[0168] In one exemplary embodiment, the light shielding layer 80 and the black matrix 232 can be provided on the same layer, which can simplify the display panel manufacturing process. The calibration pattern 342 is provided on the same layer as the light shielding layer 80 and can be an integrated structure connected to each other. In other words, part of the light shielding layer 80 can be used as the calibration pattern 342.

[0169] In an exemplary embodiment, Figure 11 As shown, the light shielding layer 80 may have a plurality of openings 81, and the openings 81 extend through the light shielding layer 80. The plurality of openings 81 are arranged in pairs with the plurality of photoresist patterns. The openings 81 at least partially overlap with the orthographic projection of the first photoresist pattern 312 on the plane where the display panel is located. For example, the orthographic projection of the opening 81 on the plane where the display panel is located is located within the orthographic projection of the first photoresist pattern 312 on the plane where the display panel is located. The openings 81 at least partially overlap with the orthographic projection of the second photoresist pattern 322 on the plane where the display panel is located. For example, the orthographic projection of the opening 81 on the plane where the display panel is located is located within the orthographic projection of the second photoresist pattern 322 on the plane where the display panel is located. The openings 81 at least partially overlap with the orthographic projection of the third photoresist pattern 332 on the plane where the display panel is located. For example, the orthographic projection of the opening 81 on the plane where the display panel is located is located within the orthographic projection of the third photoresist pattern 332 on the plane where the display panel is located.

[0170] In an exemplary embodiment, the orthographic projection of the opening 81 on the plane where the display panel is located may be in an arc shape or a strip shape.

[0171] In an exemplary embodiment, Figure 11 As shown, the orthographic projection of the light shielding layer 80 on the plane where the display panel is located may be annular, and the ring width W1 of the light shielding layer 80 may range from 0.4 mm to 0.6 mm. For example, the ring width W1 may be 0.5 mm.

[0172] In an exemplary embodiment, Figure 11 As shown, the opening 81 arranged in pair with the first photoresist pattern 312 is away from the edge of the second area AA2 and the edge of the light shielding layer 80 is close to the second area AA2, and the minimum interval W2 along the direction parallel to the plane where the display panel is located can range from 0.03 mm to 0.1 mm.

[0173] In an exemplary embodiment, Figure 11 As shown, the opening 81 paired with the second photoresist pattern 322 is away from the edge of the second area AA2 and the edge of the light shielding layer 80 is close to the second area AA2, and the minimum interval W3 along the direction parallel to the plane where the display panel is located can range from 0.03 mm to 0.1 mm.

[0174] In an exemplary embodiment, Figure 11 As shown, the opening 81 paired with the third photoresist pattern 332 is away from the edge of the second area AA2 and the edge of the light shielding layer 80 is close to the second area AA2, and the minimum interval W4 along the direction parallel to the plane where the display panel is located can range from 0.03 mm to 0.1 mm.

[0175] In an exemplary embodiment, Figure 12 As shown, the first polarizer 20 may have a first avoidance opening 20a. The second polarizer 24 has a second avoidance opening 24b, and the second avoidance opening 24b at least partially overlaps with the orthographic projection of at least one light-blocking pattern on the plane where the display panel is located, and the second avoidance opening 24b at least partially overlaps with the orthographic projection of at least one opening 81 on the plane where the display panel is located. For example, the orthographic projection of the second avoidance opening 24b on the plane where the display panel is located covers the orthographic projection of at least one opening 81 on the plane where the display panel is located. The second area AA2 is located within the orthographic projection of the second avoidance opening 24b on the plane where the display panel is located, and the minimum spacing W5 between the second avoidance opening 24b and the edge of the light-shielding layer 80 near the second area AA2 along the direction parallel to the plane where the display panel is located can range from 0.18 mm to 0.25 mm, which can prevent the second polarizer 24 from blocking the photoelectric conversion component 30.

[0176] Figure 13 FIG. 1 is a partial cross-sectional view of a display device according to another embodiment of the present disclosure. Figure 13 As shown, the display device may further include a backlight module 70 and a camera. The camera may be arranged on the non-display side of the display panel. For other details, reference may be made to the description of the aforementioned embodiment.

[0177] An embodiment of the present disclosure provides a method for manufacturing a display panel, comprising:

[0178] A first light modulation structure and a photoelectric conversion assembly are formed, wherein the photoelectric conversion assembly includes a plurality of light-blocking patterns and a plurality of photosensors, wherein the light-blocking patterns are configured to allow only visible light of a set color to be emitted toward the photosensors; the set color is one of three primary colors; and within the visible light range, the transmittance of the first light modulation structure is greater than the reflectivity;

[0179] The first light regulating structure and the photoelectric conversion component are stacked in a direction perpendicular to the plane of the display panel, and the plurality of light blocking patterns are located between the first light regulating structure and the plurality of photosensors;

[0180] Wherein, the first light regulating structure and the orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located at least partially overlap.

[0181] In an exemplary embodiment, the first light regulating structure includes a plurality of stacked film layers, the plurality of film layers including a plurality of first film layers and at least one second film layer; and forming the first light regulating structure includes:

[0182] A first film layer and a second film layer are alternately formed, and the refractive index of the first film layer is smaller than the refractive index of the second film layer; the film layer closest to the photoelectric conversion component and the film layer farthest from the photoelectric conversion component among the multiple film layers are both the first film layer.

[0183] In an exemplary embodiment, the display panel further includes a second light-regulating structure, a third light-regulating structure, and a polarizer; the polarizer includes a substrate, a first protective film, and a second protective film that are stacked, wherein the first protective film and the second protective film are respectively located on opposite sides of the substrate; the first protective film and the second protective film are both made of triacetyl cellulose; and the preparation method further includes:

[0184] placing the polarizer in a mixed solution for at least one dip coating, wherein the mixed solution includes an organic hybrid resin; a portion of the first protective film undergoes a dehydration condensation reaction with the organic hybrid resin to form the second light-regulating structure, and a portion of the second protective film undergoes a dehydration condensation reaction with the organic hybrid resin to form the third light-regulating structure;

[0185] The stacking of the first light regulating structure and the photoelectric conversion component in a direction perpendicular to the plane where the display panel is located includes: stacking the photoelectric conversion component, the third light regulating structure, the second light regulating structure and the first light regulating structure in sequence; at least one of the second light regulating structure and the third light regulating structure at least partially overlaps with the orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located, and within the visible light range, the transmittance of the second light regulating structure is greater than the reflectance, and the transmittance of the third light regulating structure is greater than the reflectance.

[0186] In an exemplary embodiment, the organic hybrid resin includes one or more compounds having the following structural formula:

[0187]

[0188] The present disclosure also provides a display device comprising a display panel according to any of the aforementioned embodiments. The display device may be any product or component with a display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigation system, but the present disclosure is not limited thereto.

[0189] Although the embodiments disclosed herein are as described above, the contents described are merely embodiments for facilitating understanding of the present invention and are not intended to limit the present invention. It should be noted that the above embodiments or implementations are merely illustrative and not restrictive. Therefore, the present disclosure is not limited to the contents specifically shown and described herein. Various modifications, substitutions, or omissions may be made to the forms and details of the implementations without departing from the scope of the present disclosure.

Claims

1. A display panel, characterized in that: The display panel comprises a display side and a non-display side that are oppositely arranged; in a plane perpendicular to the plane where the display panel is located, the display panel comprises a first light regulating structure and a photoelectric conversion component that are stacked, and the first light regulating structure is closer to the display side than the photoelectric conversion component; The photoelectric conversion assembly includes a plurality of light-blocking patterns and a plurality of photosensors, wherein the plurality of light-blocking patterns are closer to the display side than the plurality of photosensors; the light-blocking patterns are configured to allow only visible light of a set color to be emitted toward the photosensors; the set color is one of the three primary colors; The first light regulating structure at least partially overlaps with an orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located. In the visible light range, the transmittance of the first light regulating structure is greater than the reflectivity.

2. The display panel according to claim 1, wherein The orthographic projection of the first light regulating structure on the plane where the display panel is located covers the orthographic projections of the multiple light blocking patterns on the plane where the display panel is located.

3. The display panel according to claim 1, wherein The first light regulating structure includes a plurality of stacked film layers, the plurality of film layers including a plurality of first film layers and at least one second film layer, and the first film layers and the second film layers are alternately arranged; the refractive index of the first film layer is less than the refractive index of the second film layer.

4. The display panel according to claim 3, wherein: Among the plurality of film layers, the film layer closest to the photoelectric conversion element and the film layer farthest from the photoelectric conversion element are both the first film layers.

5. The display panel according to claim 3, wherein: In the visible light range, the refractive index of the first film layer ranges from 1.3 to 1.5, and the refractive index of the second film layer ranges from 1.6 to 2.

5.

6. The display panel according to claim 1, wherein: The thickness of the first light-regulating structure ranges from 200 nanometers to 300 nanometers.

7. The display panel according to any one of claims 1 to 6, wherein: The display panel includes a display area and a frame area surrounding the display area; the display area includes a non-display area, and the photoelectric conversion component is located in the non-display area; The display panel also includes a stacked ink layer and a cover layer, the ink layer and the first light regulating structure are both located on the cover layer, and the ink layer is located on the side of the cover layer away from the display side; the first light regulating structure is located on the side of the cover layer close to the display side, or on the side of the cover layer away from the display side, or the display panel includes two first light regulating structures, and the two first light regulating structures are respectively located on opposite sides of the cover layer.

8. The display panel according to claim 7, wherein: The ink layer includes an inner boundary and an outer boundary, and the outer boundary surrounds the outer side of the inner boundary; the photoelectric conversion component includes a plurality of components, each of which includes the photoresist pattern and the photoelectric sensor; the display panel also includes a black matrix, the black matrix has a plurality of openings, and the plurality of openings are arranged in pairs with the plurality of components, and the openings expose portions of the photoresist pattern of the paired components; a distance range H between at least one of the openings and the inner boundary along a direction parallel to the plane of the display panel satisfies the following formula (1): H= L1*tan(arcsin(sinβ / n))+ L2 (1) In the above formula, β is the maximum incident angle of light detected by the component, n ranges from 1.5 to 1.6, L1 is the distance between the surface of the cover layer away from the display side and the surface of the component close to the display side along the direction perpendicular to the plane of the display panel; L2 ranges from 0.13 mm to 0.15 mm.

9. The display panel according to claim 8, wherein: The plurality of components include a first component, a second component, and a third component, and the plurality of photoresist patterns include a first photoresist pattern, a second photoresist pattern, and a third photoresist pattern; the first component includes the first photoresist pattern, which is configured to allow only visible light in a red band to irradiate the photosensor of the first component; the second component includes the second photoresist pattern, which is configured to allow only visible light in a green band to irradiate the photosensor of the second component; the third component includes the third photoresist pattern, which is configured to allow only visible light in a blue band to irradiate the photosensor of the third component; The openings arranged in pair with the first component, the openings arranged in pair with the second component, and the openings arranged in pair with the third component are all spaced apart from the inner boundary by a distance H in a direction parallel to the plane where the display panel is located.

10. The display panel according to claim 9, wherein: The display panel further includes a polarizer, and the polarizer is located between the photoelectric conversion component and the first light regulating structure; the display panel further includes a second light regulating structure and a third light regulating structure, and the second light regulating structure and the third light regulating structure are respectively located on opposite sides of the polarizer, and the second light regulating structure and the third light regulating structure are an integral structure with the polarizer; At least one of the second light regulating structure and the third light regulating structure at least partially overlaps with the orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located. In the visible light range, the transmittance of the second light regulating structure is greater than the reflectivity, and the transmittance of the third light regulating structure is greater than the reflectivity.

11. The display panel according to claim 10, wherein: The polarizer includes a stacked substrate, a first protective film, and a second protective film, and the first protective film and the second protective film are respectively located on opposite sides of the substrate; the second light-regulating structure is an integral structure with one of the first protective film and the second protective film, and the third light-regulating structure is an integral structure with the other of the first protective film and the second protective film; the material of the first protective film and the second protective film both includes triacetyl cellulose.

12. The display panel according to any one of claims 1 to 6, wherein: The display panel further includes a polarizer, and the polarizer is located between the photoelectric conversion component and the first light adjustment structure; The display panel further includes a second light regulating structure and a third light regulating structure, and the second light regulating structure and the third light regulating structure are respectively located on opposite sides of the polarizer, and the second light regulating structure and the third light regulating structure are an integral structure with the polarizer; At least one of the second light regulating structure and the third light regulating structure at least partially overlaps with the orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located. In the visible light range, the transmittance of the second light regulating structure is greater than the reflectivity, and the transmittance of the third light regulating structure is greater than the reflectivity.

13. The display panel according to any one of claims 1 to 6, wherein: The display panel includes a display area and a frame area surrounding the display area; the display area includes a first area and a second area, the orthographic projections of the first area and the second area on the plane where the display panel is located do not overlap, and the light transmittance of the second area is higher than the light transmittance of the first area; the first area includes a non-display area, and the photoelectric conversion component is located in the non-display area.

14. The display panel according to claim 13, wherein: The photoelectric conversion component includes a plurality of components, each of which includes the light-blocking pattern and the photosensor; the plurality of components include a first component, a second component, and a third component, and the plurality of light-blocking patterns include a first light-blocking pattern, a second light-blocking pattern, and a third light-blocking pattern; the first component includes the first light-blocking pattern, which is configured to allow only visible light in the red band to irradiate the photosensor of the first component; the second component includes the second light-blocking pattern, which is configured to allow only visible light in the green band to irradiate the photosensor of the second component; the third component includes the third light-blocking pattern, which is configured to allow only visible light in the blue band to irradiate the photosensor of the third component; The first component, the second component and the third component are arranged along a first direction and located on one side of the second area along the second direction. The first direction intersects with the second direction and the plane formed is parallel to the plane where the display panel is located.

15. The display panel according to claim 13, wherein: The photoelectric conversion component includes a plurality of components, each of which includes the light-blocking pattern and the photosensor; the plurality of components include a first component, a second component, and a third component, and the plurality of light-blocking patterns include a first light-blocking pattern, a second light-blocking pattern, and a third light-blocking pattern; the first component includes the first light-blocking pattern, which is configured to allow only visible light in the red band to irradiate the photosensor of the first component; the second component includes the second light-blocking pattern, which is configured to allow only visible light in the green band to irradiate the photosensor of the second component; the third component includes the third light-blocking pattern, which is configured to allow only visible light in the blue band to irradiate the photosensor of the third component; The first component, the second component and the third component are distributed around the second area.

16. The display panel according to claim 15, wherein: The display panel also includes a light-shielding layer, the orthographic projection of the light-shielding layer on the plane where the display panel is located is annular, and the light-shielding layer surrounds the second area. The orthographic projection of the light-shielding layer on the plane where the display panel is located covers the orthographic projection of the photoelectric conversion component on the plane where the display panel is located; the ring width of the light-shielding layer ranges from 0.4 mm to 0.6 mm.

17. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 16.

18. A method for preparing a display panel, characterized in that: include: A first light modulation structure and a photoelectric conversion assembly are formed, wherein the photoelectric conversion assembly includes a plurality of light-blocking patterns and a plurality of photosensors, wherein the light-blocking patterns are configured to allow only visible light of a set color to be emitted toward the photosensors; the set color is one of three primary colors; and within the visible light range, the transmittance of the first light modulation structure is greater than the reflectivity; The first light regulating structure and the photoelectric conversion component are stacked in a direction perpendicular to the plane of the display panel, and the plurality of light blocking patterns are located between the first light regulating structure and the plurality of photosensors; Wherein, the first light regulating structure and the orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located at least partially overlap.

19. The method for manufacturing a display panel according to claim 18, wherein: The first light regulating structure includes a plurality of stacked film layers, wherein the plurality of film layers include a plurality of first film layers and at least one second film layer; and forming the first light regulating structure includes: A first film layer and a second film layer are alternately formed, and the refractive index of the first film layer is smaller than the refractive index of the second film layer; the film layer closest to the photoelectric conversion component and the film layer farthest from the photoelectric conversion component among the multiple film layers are both the first film layer.

20. The method for manufacturing a display panel according to claim 18, wherein: The display panel further includes a second light-regulating structure, a third light-regulating structure, and a polarizer; the polarizer includes a laminated substrate, a first protective film, and a second protective film, wherein the first protective film and the second protective film are respectively located on opposite sides of the substrate; the first protective film and the second protective film are both made of triacetyl cellulose; and the preparation method further includes: placing the polarizer in a mixed solution for at least one dip coating, wherein the mixed solution includes an organic hybrid resin; a portion of the first protective film undergoes a dehydration condensation reaction with the organic hybrid resin to form the second light-regulating structure, and a portion of the second protective film undergoes a dehydration condensation reaction with the organic hybrid resin to form the third light-regulating structure; The stacking of the first light regulating structure and the photoelectric conversion component in a direction perpendicular to the plane where the display panel is located includes: stacking the photoelectric conversion component, the third light regulating structure, the second light regulating structure and the first light regulating structure in sequence; at least one of the second light regulating structure and the third light regulating structure at least partially overlaps with the orthographic projection of at least one of the light blocking patterns on the plane where the display panel is located, and within the visible light range, the transmittance of the second light regulating structure is greater than the reflectance, and the transmittance of the third light regulating structure is greater than the reflectance.

21. The method for manufacturing a display panel according to claim 20, wherein: The organic hybrid resin includes one or more compounds having the following structural formula:

Images