Display panel, display device and preparation method of display panel

Abstract

The invention provides a display panel, a display device and a preparation method of the display panel, the display panel comprises a substrate, a device layer, a light adjusting part and a conductive control part, the device layer is arranged on one side of the substrate, and the device layer comprises a plurality of sub-pixels arranged at intervals. The light adjusting part is arranged on the side, away from the substrate, of the device layer, the light adjusting part comprises a first adjusting part and a second adjusting part which are arranged in a stacked mode in the direction away from the substrate, and orthographic projections of the first adjusting part and the second adjusting part on the substrate are arranged on the peripheral sides of the sub-pixels. The conductive control part comprises a first control part and a second control part, the first control part controls the light transmittance of the first adjusting part, and the second control part controls the light transmittance of the second adjusting part.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a display panel, a display device, and a method for manufacturing a display panel. Background Art

[0002] With the development of science and technology, the display panel field has also made great progress, and people's requirements for display panels are also increasing day by day. For some usage scenarios, the display panel needs to have multiple working modes to meet different usage needs. For example, the display panel needs to have different light output angles in different working modes. On this basis, how to achieve the free switching of display panels under different visual angle ranges has become one of the key research directions of major manufacturers. Summary of the invention

[0003] The embodiments of the present application provide a display panel, a display device, and a method for manufacturing a display panel, which can achieve flexible switching of different visual viewing angle ranges.

[0004] In the first aspect, an embodiment of the present application provides a display panel, the display panel includes a substrate, a device layer, a light adjustment unit and a conductive control unit, the device layer is arranged on one side of the substrate, and the device layer includes a plurality of sub-pixels arranged at intervals. The light adjustment unit is arranged on the side of the device layer away from the substrate, and the light adjustment unit includes a first adjustment unit and a second adjustment unit stacked in a direction away from the substrate, and the orthographic projections of the first adjustment unit and the second adjustment unit on the substrate are both arranged on the peripheral side of the sub-pixel. The conductive control unit includes a first control unit and a second control unit, the first control unit controls the light transmittance of the first adjustment unit, and the second control unit controls the light transmittance of the second adjustment unit.

[0005] In a second aspect, an embodiment of the present application provides a display device, which includes a display panel in any of the aforementioned embodiments.

[0006] In a third aspect, an embodiment of the present application provides a method for preparing a display panel, comprising:

[0007] Forming a device layer on one side of the substrate, the device layer comprising a plurality of sub-pixels arranged at intervals;

[0008] A light regulating part is formed on a side of the device layer away from the substrate, the light regulating part comprising a first regulating part and a second regulating part stacked in a direction away from the substrate, and the orthographic projections of the first regulating part and the second regulating part on the substrate are both arranged on the periphery of the sub-pixel;

[0009] Forming a conductive control portion on a side of the device layer away from the substrate, the conductive control portion comprising a first control portion and a second control portion;

[0010] The first control unit controls the light transmittance of the first adjustment unit, and the second control unit controls the light transmittance of the second adjustment unit.

[0011] The embodiments of the present application provide a display panel, a display device, and a method for preparing a display panel. The first control unit and the second control unit can independently control the light transmittance corresponding to the first adjustment unit and the second adjustment unit, respectively. On this basis, according to different actual usage conditions, the light transmittance of the first adjustment unit and the second adjustment unit can be selectively adjusted to flexibly change the visible viewing angle range corresponding to the display panel. While meeting the anti-peeping needs, display effects with different visible viewing angle ranges can also be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0013] Figure 1a to Figure 1c is a schematic diagram of a cross-sectional structure of a display panel in different working modes provided by an embodiment of the present application;

[0014] Figure 2 It is a schematic diagram of the positional relationship between a sub-pixel, a light adjustment unit, and a conductive control unit in a display panel provided by an embodiment of the present application;

[0015] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0016] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at the middle area Q;

[0017] Figure 5 It is a schematic diagram of the positional relationship between sub-pixels, a light adjustment unit, and a conductive control unit in another display panel provided by an embodiment of the present application;

[0018] Figure 6 It is a schematic diagram of the positional relationship between sub-pixels, a light adjustment unit, and a conductive control unit in another display panel provided by an embodiment of the present application;

[0019] Figure 7 It is a schematic diagram of the positional relationship between sub-pixels, a light adjustment unit, and a conductive control unit in another display panel provided by an embodiment of the present application;

[0020] Figure 8 It is a schematic diagram of the positional relationship between sub-pixels, a light adjustment unit, and a conductive control unit in another display panel provided by an embodiment of the present application;

[0021] Fig. 9 is a schematic diagram of the positional relationship between a first conductor layer, a light adjustment portion, and a conductive control portion in another display panel provided in an embodiment of the present application;

[0022] Fig.10 is a schematic structural diagram of a second conductor layer in another display panel provided in an embodiment of the present application;

[0023] Fig.11 is a schematic diagram of the expanded structure of a first electrode, a third electrode and a fifth electrode in another display panel provided in an embodiment of the present application;

[0024] Fig.12 is a schematic cross-sectional structure diagram of another display panel provided in an embodiment of the present application;

[0025] Fig.13 is a structural schematic diagram of a display device provided in an embodiment of the present application;

[0026] Fig.14 It is a structural schematic diagram of a vehicle-mounted display provided in an embodiment of the present application;

[0027] Fig.15 is a flow chart of a method for preparing a display panel provided in an embodiment of the present application;

[0028] Figures 16a to 16c It is a process structure schematic diagram of a method for preparing a display panel provided in an embodiment of the present application;

[0029] Fig.17 is a flow chart of another method for preparing a display panel provided in an embodiment of the present application;

[0030] Figures 18a to 18b is a process structure schematic diagram of another method for preparing a display panel provided in an embodiment of the present application;

[0031] Fig.19 is a flow chart of another method for preparing a display panel provided in an embodiment of the present application;

[0032] Figure 20a to Figure 20b It is a process structure schematic diagram of another method for preparing a display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0035] Display panels can usually be used in a variety of fields and environments. In different situations, users have different requirements for display panels. In some cases, such as in the field of in-vehicle displays, in order to improve driving safety, it is usually necessary to control the optical path of the display panel to achieve an anti-peeping effect, reduce the impact of the display screen on the driver, and reduce the risk of causing safety hazards. However, in different environmental scenarios, users have different requirements for the visual viewing angle of the display panel. On this basis, how to meet the different display viewing angle requirements of the display panel in different situations has become one of the current key research directions.

[0036] Regarding the above issues, please refer to Figure 1a to Figure 1cThe embodiment of the present application provides a display panel 100, which includes a substrate 10, a device layer 20, a light adjustment part 30 and a conductive control part 40. The device layer 20 is arranged on one side of the substrate 10, and the device layer 20 includes a plurality of sub-pixels 21 arranged at intervals. The light adjustment part 30 is arranged on the side of the device layer 20 away from the substrate 10. The light adjustment part 30 includes a first adjustment part 31 and a second adjustment part 32 stacked in a direction away from the substrate 10. The orthographic projections of the first adjustment part 31 and the second adjustment part 32 on the substrate 10 are both arranged on the peripheral side of the sub-pixel 21. The conductive control part 40 includes a first control part 41 and a second control part 42. The first control part 41 controls the light transmittance of the first adjustment part 31, and the second control part 42 controls the light transmittance of the second adjustment part 32.

[0037] The substrate 10 mainly plays a supporting role, and other film layer structures and device structures are stacked on the substrate 10 in sequence. The stacking arrangement mentioned here means that other film layer structures and device structures are sequentially arranged along the thickness direction Z of the substrate 10. Among them, the thickness direction Z of the substrate 10 is usually consistent with the thickness direction Z of other film layers. For the convenience of description, the thickness direction Z of the substrate 10 and the thickness direction Z of other film layers are schematically shown in the same direction in the embodiments of the present application.

[0038] The device layer 20 is the main film layer structure for realizing the light-emitting function in the display panel 100. The device layer 20 is arranged on one side of the substrate 10 along the thickness direction Z. The device layer 20 includes a plurality of sub-pixels 21. Specifically, the device layer 20 may include an anode layer, a light-emitting layer, and a cathode layer stacked in a direction away from the substrate 10. On this basis, the sub-pixel 21 may include an anode structure located in the anode layer, a cathode structure located in the cathode layer, and a light-emitting portion located in the light-emitting layer. The anode and the cathode jointly drive and control the light-emitting portion to realize the light-emitting function.

[0039] The sub-pixel 21 may have various forms. For example, the light-emitting portion in the sub-pixel 21 may be an organic light-emitting material, that is, the display panel 100 may be an organic light-emitting display panel 100. On this basis, the light-emitting portion may be formed by stacking multiple film layers. For example, the light-emitting portion may include a stacked hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, and an electron injection layer. Among them, the multiple sub-pixels 21 may be used to emit light of different colors, for example, the multiple sub-pixels 21 include but are not limited to a red sub-pixel 21 for emitting red light, a green sub-pixel 21 for emitting green light, and a blue sub-pixel 21 for emitting blue light.

[0040] The light adjustment part 30 is arranged on the side of the device layer 20 away from the substrate 10, and the light adjustment part 30 is used to adjust part of the light emitted from the sub-pixel 21, and the conductive control part 40 is a conductor structure in the display panel 100 for controlling the transmittance of the light corresponding to the light adjustment part 30. Specifically, the light adjustment part 30 includes at least a first adjustment part 31 and a second adjustment part 32, and both adjustment parts are located on the side of the light emitting surface of the sub-pixel 21 and the orthographic projection on the substrate 10 is arranged on the peripheral side of the sub-pixel 21. On this basis, part of the obliquely emitted light emitted by the sub-pixel 21 can be moved to the position of the first adjustment part 31 or the second adjustment part 32.

[0041] The conductive control part 40 at least includes a first control part 41 and a second control part 42, and the first control part 41 and the second control part 42 can respectively form different electric fields independent of each other, wherein the electric field formed by the first control part 41 can pass through the first adjustment part 31 to control the light transmittance of the first adjustment part 31, and the electric field formed by the second control part 42 can pass through the second adjustment part 32 to control the light transmittance of the second adjustment part 32. That is, the first control part 41 can change the light absorption capacity of the first adjustment part 31, and the second control part 42 can change the light absorption capacity of the second adjustment part 32.

[0042] On this basis, the light adjustment unit 30 and the conductive control unit 40 cooperate to switch the display panel 100 between different working modes. For example, the display panel 100 includes at least three working modes: a first mode, a second mode, and a third mode. Figure 1a As shown, in the first mode, the first control unit 41 and the second control unit 42 can respectively control the first adjustment unit 31 and the second adjustment unit 32 to have a larger light transmittance. At this time, the first adjustment unit 31 and the second adjustment unit 32 have poor light absorption capabilities, and most of the wide-viewing angle light emitted by the sub-pixel 21 can pass through the first adjustment unit 31 and the second adjustment unit 32 and emit out of the display panel 100, thereby realizing the wide-viewing angle display function of the display panel 100.

[0043] like Figure 1c As shown, in the second mode, the first control unit 41 and the second control unit 42 can respectively control the first adjustment unit 31 and the second adjustment unit 32 to have a smaller light transmittance. At this time, the first adjustment unit 31 and the second adjustment unit 32 have a strong light absorption ability. Most of the wide-angle light emitted by the sub-pixel 21 will be absorbed by the first adjustment unit 31 and the second adjustment unit 32, thereby reducing the wide-angle light corresponding to the display panel 100, realizing the small-angle display function of the display panel 100, and meeting the anti-peeping display needs.

[0044] like Figure 1bAs shown, in the third mode, the first control unit 41 can control the first adjustment unit 31 to have a smaller light transmittance, and the second control unit 42 can control the second adjustment unit 32 to have a larger light transmittance. At this time, the first adjustment unit 31 has a stronger light absorption capacity, and the second adjustment unit 32 has a weaker light absorption capacity. In this case, the light with a smaller tilt angle emitted by the sub-pixel 21 can propagate to the second adjustment unit 32 and pass through the second adjustment unit 32 to leave the display panel 100. The light with a larger tilt angle emitted by the sub-pixel 21 can propagate to the first adjustment unit 31 and be absorbed by the first adjustment unit 31, thereby realizing the medium viewing angle display function of the display panel 100.

[0045] It should be noted that the embodiment of the present application does not limit the size and structural relationship of the first adjustment portion 31 and the second adjustment portion 32. For example, the orthographic projection of the first adjustment portion 31 on the substrate 10 can overlap with the orthographic projection of the second adjustment portion 32 on the substrate 10, and the first adjustment portion 31 and the second adjustment portion 32 can be connected and integrated, or the first adjustment portion 31 and the second adjustment portion 32 can be spaced apart from each other in the thickness direction Z.

[0046] In other cases, the orthographic projection of the first adjustment portion 31 on the substrate 10 may also be offset from the orthographic projection of the second adjustment portion 32 on the substrate 10. For example, the orthographic projection of the first adjustment portion 31 on the substrate 10 is located on the side of the orthographic projection of the second adjustment portion 32 on the substrate 10 that is away from the corresponding sub-pixel 21, or the orthographic projection of the second adjustment portion 32 on the substrate 10 is located on the side of the orthographic projection of the first adjustment portion 31 on the substrate 10 that is away from the corresponding sub-pixel 21, or the orthographic projection of at least part of the structure in the first adjustment portion 31 on the substrate 10 and the orthographic projection of at least part of the structure in the second adjustment portion 32 on the substrate 10 may also be located at different peripheral positions of the sub-pixel 21, respectively.

[0047] The embodiment of the present application does not limit the positional relationship of the first control part 41 relative to the first adjustment part 31, and the positional relationship of the second control part 42 relative to the second adjustment part 32. Exemplarily, the first control part 41 includes two opposite electrode plates, which can be arranged on both sides of the first adjustment part 31 along the thickness direction Z, or can also be arranged on both sides of the first adjustment part 31 along a direction parallel to the plane where the substrate 10 is located.

[0048] In addition, the embodiment of the present application does not limit the specific form of the light adjustment part 30. For example, the first adjustment part 31 may include light-shielding particles. In some cases, the first control part 41 may control the light-shielding particles to gather at a local position of the first adjustment part 31, so that at other positions, the light emitted by the sub-pixel 21 can still pass through the first adjustment part 31, and the first adjustment part 31 has a larger light transmittance. In other cases, the first control part 41 may control the light-shielding particles to be dispersed at various positions of the first adjustment part 31, so that the light-shielding particles can block or absorb most of the light propagating to the first adjustment part 31, and the first adjustment part 31 has a smaller light transmittance.

[0049] And according to different actual needs, the light adjustment part 30 may be provided with only two adjustment parts, namely the first adjustment part 31 and the second adjustment part 32 , or may also be provided with other adjustment parts, which is not limited in the embodiment of the present application.

[0050] In summary, in the embodiment of the present application, the first control unit 41 and the second control unit 42 can independently control the light transmittance corresponding to the first adjustment unit 31 and the second adjustment unit 32, respectively. On this basis, according to different actual usage conditions, the light transmittance of the first adjustment unit 31 and the second adjustment unit 32 can be selectively adjusted respectively to flexibly change the visible viewing angle range corresponding to the display panel 100. While meeting the anti-peeping needs, display effects with different visible viewing angle ranges can also be achieved.

[0051] In addition, by setting at least one of the first adjustment part 31 and the second adjustment part 32 to have a smaller light transmittance, the risk of color mixing of light emitted by adjacent sub-pixels 21 can also be reduced, which helps to improve the color deviation problem of the display panel 100 and improve the display accuracy and viewing experience.

[0052] In some embodiments, at least one of the first adjusting portion 31 and the second adjusting portion 32 includes an electrochromic unit.

[0053] The electrochromic unit is a structure that can undergo stable and reversible color changes under the action of an external electric field. The electrochromic unit appears as a reversible change in color and transparency. The embodiment of the present application does not limit the material composition of the electrochromic unit. Optionally, the electrochromic unit includes at least one of an inorganic electrochromic material and an organic electrochromic material. Among them, the inorganic electrochromic material may include tungsten trioxide, and the organic electrochromic material may include polythiophenes and their derivatives, viologens, tetrathiafulvalene, metal phthalocyanine compounds, etc.

[0054] On this basis, by setting at least one of the first adjustment unit 31 and the second adjustment unit 32 to include an electrochromic unit, and using the electric field of at least one of the first control unit 41 and the second control unit 42 to control the change of the corresponding color of the electrochromic unit, the light transmittance and light absorption capacity of the light adjustment unit 30 are adjusted to meet the switching needs of the display panel 100 in different working modes. Specifically, under the action of a specific electric field, the electrochromic unit can be transformed into a color such as black that has a strong absorption effect on light. At this time, part of the wide-angle light emitted by the sub-pixel 21 will be absorbed by the electrochromic unit. Under the action of other electric fields, the electrochromic unit can be transformed into a color such as white that has a strong transmittance to light. At this time, most of the wide-angle light emitted by the sub-pixel 21 will not be absorbed by the electrochromic unit and eventually leave the display panel 100.

[0055] In the embodiment of the present application, an electrochromic unit is provided in at least one of the first adjustment portion 31 and the second adjustment portion 32, and the characteristic of the electrochromic unit that a reversible color change occurs under the action of an electric field is utilized, so that at least one of the first adjustment portion 31 and the second adjustment portion 32 can change its own light transmittance under the action of an electric field, thereby meeting the display requirements of different viewing angle ranges corresponding to the display panel 100.

[0056] In some optional embodiments, both the first adjustment portion 31 and the second adjustment portion 32 are provided with electrochromic units.

[0057] In some embodiments, see Figures 2 to 4 ,, the orthographic projection of the first adjusting portion 31 on the substrate 10 surrounds the orthographic projection of the sub-pixel 21 on the substrate 10; and / or, the orthographic projection of the second adjusting portion 32 on the substrate 10 surrounds the orthographic projection of the sub-pixel 21 on the substrate 10.

[0058] Taking the first adjustment portion 31 as an example, since the orthographic projection of the first adjustment portion 31 on the substrate 10 surrounds the orthographic projection of the sub-pixel 21 on the substrate 10, the orthographic projection of some structures in the first adjustment portion 31 on the substrate 10 will be located on both sides of the corresponding sub-pixel 21 along the first direction X, and the orthographic projection of other partial structures on the substrate 10 will be located on both sides of the corresponding sub-pixel 21 along the second direction Y, wherein the first direction X and the second direction Y are two directions parallel to the plane of the substrate 10 and intersecting with each other. Optionally, the first direction X and the second direction Y are perpendicular to each other and a plurality of sub-pixels 21 are arranged in an array along the first direction X and the second direction Y, respectively.

[0059] On this basis, when the first control unit 41 controls the first adjustment unit 31 to have a smaller light transmittance, part of the wide viewing angle light emitted by the sub-pixel 21 that is inclined toward the first direction X and part of the wide viewing angle light emitted that is inclined toward the second direction Y can both propagate to the first adjustment unit 31 and be blocked or absorbed by the first adjustment unit 31, thereby reducing the wide viewing angle light of the display panel 100 in the first direction X and the second direction Y.

[0060] In some optional embodiments, the orthographic projection of the first adjusting portion 31 on the substrate 10 surrounds the orthographic projection of the sub-pixel 21 on the substrate 10, and the orthographic projection of the second adjusting portion 32 on the substrate 10 surrounds the orthographic projection of the sub-pixel 21 on the substrate 10. Further, the orthographic projection of the first adjusting portion 31 on the substrate 10 may overlap or even coincide with the orthographic projection of the second adjusting portion 32 on the substrate 10, or the orthographic projection of the first adjusting portion 31 on the substrate 10 may surround the orthographic projection of the second adjusting portion 32 on the substrate 10, or the orthographic projection of the second adjusting portion 32 on the substrate 10 may surround the orthographic projection of the first adjusting portion 31 on the substrate 10, and the embodiments of the present application are not limited to this.

[0061] In addition, if Figure 2 As shown, the orthographic projection of the first adjusting portion 31 on the substrate 10 may be a circular ring structure, or refer to Figure 5 , the orthographic projection of the first adjusting portion 31 on the substrate 10 may also be a square ring structure, and the orthographic projection of the first adjusting portion 31 on the substrate 10 may only surround a single sub-pixel 21, or may also surround multiple sub-pixels 21 at the same time, and the embodiment of the present application is not limited to this, and the second adjusting portion 32 is the same. Optionally, the orthographic projection of the first adjusting portion 31 on the substrate 10 may only surround the orthographic projection of a single sub-pixel 21 on the substrate 10, and the orthographic projection of the first adjusting portion 31 on the substrate 10 matches the orthographic projection shape of the corresponding sub-pixel 21 on the substrate 10.

[0062] In summary, the embodiment of the present application sets at least one of the first adjustment portion 31 and the second adjustment portion 32 to surround the sub-pixel 21, so as to adjust the multi-directional wide-viewing angle light emitted by the sub-pixel 21 and inclined in the circumferential direction. On this basis, by controlling at least one of the first adjustment portion 31 and the second adjustment portion 32 to have a smaller light transmittance, at least one of the first adjustment portion 31 and the second adjustment portion 32 can block or absorb the multi-directional wide-viewing angle light emitted by the sub-pixel 21 and inclined in the circumferential direction, thereby helping to achieve an all-round anti-peeping effect for the display panel 100.

[0063] In some embodiments, see Figure 6 and Figure 7The device layer 20 includes a plurality of pixel units 22 arranged repeatedly, the pixel unit 22 includes a plurality of sub-pixels 21, the first adjustment portion 31 is arranged such that the orthographic projection of the substrate 10 surrounds the orthographic projection of the pixel unit 22 on the substrate 10, and the second adjustment portion 32 is arranged such that the orthographic projection of the substrate 10 surrounds the orthographic projection of the pixel unit 22 on the substrate 10.

[0064] The device layer 20 includes a plurality of pixel units 22, where the “pixel unit 22” refers to the smallest repeating unit composed of a plurality of sub-pixels 21. The types, quantities, and arrangements of the sub-pixels 21 included in different pixel units 22 are all the same.

[0065] Taking the first adjustment part 31 as an example, the orthographic projection of the first adjustment part 31 on the substrate 10 surrounds the orthographic projection of the pixel unit 22 on the substrate 10, that is, a single first adjustment part 31 can be set corresponding to the sub-pixel 21 at the same time, and a single first adjustment part 31 can play a common adjustment role on the light emitted by multiple sub-pixels 21 in a single pixel unit 22. In other words, at the same time, the light emitted by multiple sub-pixels 21 in a single pixel unit 22 can be subject to the same or similar adjustment effect, which helps to reduce the color deviation problem under wide viewing angle observation and improve display accuracy.

[0066] Further, under this design, the first adjustment portion 31 may not exist in the region between the multiple sub-pixels 21 in a single pixel unit 22, thereby reducing the effect of the first adjustment portion 31 on the spacing between the multiple sub-pixels 21 in a single pixel unit 22, thereby helping to reduce the spacing between adjacent sub-pixels 21 in a single pixel unit 22 and improving the resolution of the display panel 100. In addition, this design also helps to reduce the overall number of first adjustment portions 31 and increase the size of a single first adjustment portion 31, thereby reducing the difficulty of manufacturing the light adjustment portion 30.

[0067] In summary, in the embodiment of the present application, by setting the first adjustment part 31 and the second adjustment part 32 to surround the pixel unit 22, it is helpful to improve the color shift problem under wide viewing angle observation and improve the display accuracy. At the same time, this design is also conducive to reducing the spacing between adjacent sub-pixels 21 in a single pixel unit 22, improving the resolution of the display panel 100, and helping to reduce the difficulty of preparing the light adjustment part 30.

[0068] In some embodiments, see Figure 8The orthographic projection of the first adjusting portion 31 on the substrate 10 is located on at least one side of the orthographic projection of the sub-pixel 21 on the substrate 10 along the first direction X, and the orthographic projection of the second adjusting portion 32 on the substrate 10 is located on at least one side of the orthographic projection of the sub-pixel 21 on the substrate 10 along the second direction Y. The first direction X intersects with the second direction Y and is parallel to the plane where the substrate 10 is located.

[0069] In some optional embodiments, two first adjustment parts 31 and two second adjustment parts 32 are correspondingly provided for a single first sub-pixel 21a, and the orthographic projections of the two first adjustment parts 31 on the substrate 10 are located on both sides of the orthographic projection of the sub-pixel 21 on the substrate 10 along the first direction X, and the orthographic projections of the two second adjustment parts 32 on the substrate 10 are located on both sides of the orthographic projection of the sub-pixel 21 on the substrate 10 along the second direction Y. The first adjustment part 31 and the second adjustment part 32 may be connected to each other, or may be spaced apart from each other, as long as the first adjustment part 31 and the second adjustment part 32 can be independently driven and controlled by the first control part 41 and the second control part 42, respectively.

[0070] In combination with the foregoing content, it can be known that the first adjustment portion 31 and the second adjustment portion 32 can change the light transmittance under the control of the first control portion 41 and the second control portion 42 respectively, so as to block or absorb part of the wide-angle light emitted by the sub-pixel 21. On this basis, the embodiment of the present application sets the first adjustment portion 31 and the second adjustment portion 32 at different peripheral positions of the sub-pixel 21 along different directions, so as to flexibly realize the anti-peeping needs of the display panel 100 at different orientations.

[0071] Specifically, taking the in-vehicle display as an example, the main driver's seat and the co-driver's seat can be arranged side by side along the first direction X, and the second direction Y can be parallel to the direction of gravity of the vehicle. On this basis, when the first control unit 41 controls the first adjustment unit 31 to have a smaller light transmittance, the first adjustment unit 31 can block or absorb part of the large viewing angle light emitted by the sub-pixel 21 and inclined to the first direction X, reducing the risk of the driver directly observing the screen displayed by the display panel 100 at the co-driver's seat. When the second control unit 42 controls the second adjustment unit 32 to have a smaller light transmittance, the second adjustment unit 32 can block or absorb part of the large viewing angle light emitted by the sub-pixel 21 and inclined to the second direction Y, reducing the interference effect of the large viewing angle light emitted by the display panel 100 on the windshield.

[0072] On this basis, according to different actual use needs, the first adjustment portion 31 can be selectively controlled to have a larger or smaller light transmittance, thereby realizing the anti-peeping display function or the wide viewing angle display function of the display panel 100 in the first direction X. Similarly, the second adjustment portion 32 can be selectively controlled to have a larger or smaller light transmittance, thereby realizing the anti-peeping display function or the wide viewing angle display function of the display panel 100 in the second direction Y.

[0073] Furthermore, since the first control unit 41 and the second control unit 42 can form an independent electric field structure for controlling the first adjustment unit 31 and the second adjustment unit 32 respectively, the first adjustment unit 31 and the second adjustment unit 32 can be driven and controlled independently. In view of this, the embodiment of the present application can realize the anti-peeping display function of the display panel 100 in some directions or all directions, and the wide viewing angle display function in some directions or all directions, thereby improving the display flexibility of the display panel 100, and further helping to improve the applicability of the display panel 100.

[0074] In some embodiments, Figure 3 and Figure 4 As shown, the orthographic projection of the first adjusting portion 31 on the substrate 10 and the orthographic projection of the second adjusting portion 32 on the substrate 10 are overlapped.

[0075] The first adjustment portion 31 and the second adjustment portion 32 are both located at the outer periphery of the sub-pixel 21, that is, the first adjustment portion 31 and the second adjustment portion 32 are both located at the region between adjacent sub-pixels 21. On this basis, the orthographic projection size of the first adjustment portion 31 and the second adjustment portion 32 on the substrate 10 and the layout of the first adjustment portion 31 and the second adjustment portion 32 will affect the spacing between adjacent sub-pixels 21.

[0076] In view of this, in the embodiment of the present application, the orthographic projection of the first adjustment portion 31 on the substrate 10 and the orthographic projection of the second adjustment portion 32 on the substrate 10 are overlapped, so that there is an overlapping area between the orthographic projection of the first adjustment portion 31 on the substrate 10 and the orthographic projection of the second adjustment portion 32 on the substrate 10, thereby reducing the orthographic projection area corresponding to the structure formed by the combination of the first adjustment portion 31 and the second adjustment portion 32. This design helps to reduce the influence of the first adjustment portion 31 and the second adjustment portion 32 on the spacing between adjacent sub-pixels 21, thereby helping to improve the resolution of the display panel 100 and improve the viewing experience.

[0077] It should be noted that, in the embodiment of the present application, the first adjustment portion 31 and the second adjustment portion 32 may include the same material, or may include different materials. And the first adjustment portion 31 and the second adjustment portion 32 may adopt the same principle and structure to achieve the light adjustment effect, or may adopt different principles and structures to achieve the light adjustment effect. Further, the first adjustment portion 31 and the second adjustment portion 32 may be connected to each other, or the two may be spaced apart from each other in the thickness direction Z, and the embodiment of the present application does not limit this.

[0078] In some embodiments, Figure 3 and Figure 4 As shown, the first adjusting portion 31 and the second adjusting portion 32 are connected and arranged integrally.

[0079] The first adjusting portion 31 and the second adjusting portion 32 are connected as one body, which means that the first adjusting portion 31 and the second adjusting portion 32 include the same material and are connected to each other in the thickness direction Z. Further, the first adjusting portion 31 and the second adjusting portion 32 adopt the same principle and structure to achieve the light adjustment effect. Optionally, the first adjusting portion 31 and the second adjusting portion 32 both include an electrochromic unit, that is, the first adjusting portion 31 and the second adjusting portion 32 both include an electrochromic material, and adjust their light shielding or absorption effect by changing their own color.

[0080] In the embodiment of the present application, the first adjustment part 31 and the second adjustment part 32 are connected and integrated so that the two can include the same material and be formed together in the same preparation process, which helps to reduce the preparation difficulty of the light adjustment part 30 and reduce the preparation cost.

[0081] In some embodiments, the first control unit 41 includes a first electrode 411 and a second electrode 412 that are insulated and spaced apart, and the first adjustment unit 31 is sandwiched between the first electrode 411 and the second electrode 412. The second control unit 42 includes a third electrode 421 and a fourth electrode 422 that are insulated and spaced apart, and the second adjustment unit 32 is sandwiched between the third electrode 421 and the fourth electrode 422. The first electrode 411 is insulated relative to the third electrode 421 and the fourth electrode 422.

[0082] The first electrode 411 and the second electrode 412 are electrode structures that are spaced apart from each other and are used to form an electric field passing through the first adjustment portion 31. The first electrode 411 and the second electrode 412 can have a variety of layouts, for example, the first electrode 411 and the second electrode 412 can be arranged on both sides of the first adjustment portion 31 along the thickness direction Z, or the first electrode 411 and the second electrode 412 can also be spaced apart in a direction parallel to the plane of the substrate 10. The embodiment of the present application does not limit this, as long as the electric field structure formed by the first electrode 411 and the second electrode 412 can control and change the light transmittance of the first adjustment portion 31. The relationship between the third electrode 421 and the fourth electrode 422 is similar to this, and the embodiment of the present application will not be repeated.

[0083] The first electrode 411 and the second electrode 412 may include the same material, or may include different materials. The embodiment of the present application does not limit the size of the first electrode 411 and the second electrode 412 and the material composition, etc. For example, when the size of the first electrode 411 and the second electrode 412 is small, or during the display process, the number of light rays propagating to the positions of the first electrode 411 and the second electrode 412 is small, the first electrode 411 and the second electrode 412 may be made of opaque metal materials, and in other cases, in order to reduce the adverse effects of the first electrode 411 and the second electrode 412 on the display effect, the first electrode 411 and the second electrode 412 may be made of transparent conductive materials, such as indium tin oxide, etc.

[0084] Furthermore, in order to meet the independent driving and control requirements of the first adjustment unit 31 and the second adjustment unit 32, the embodiment of the present application further sets the first electrode 411 to be insulated relative to the third electrode 421 and the fourth electrode 422, that is, the signal voltage in the first electrode 411 can be different from the signal voltage in the third electrode 421 and the fourth electrode 422. On this basis, the electric field structure formed by the first electrode 411 and the second electrode 412 can be different from the electric field structure formed by the third electrode 421 and the fourth electrode 422, so that the first adjustment unit 31 and the second adjustment unit 32 can be independently controlled, so as to meet the free switching requirements of the display panel 100 in different working modes, and improve the display flexibility and applicability of the display panel 100.

[0085] It should be noted that since the first electrode 411 is insulated relative to the third electrode 421 and the fourth electrode 422, the electric field structure formed by the first control unit 41 may be different from the electric field structure formed by the second control unit 42. On this basis, the second electrode 412 may be insulated relative to the third electrode 421 and the fourth electrode 422, or the second electrode 412 may be electrically connected to one of the third electrode 421 and the fourth electrode 422. The embodiments of the present application do not limit this.

[0086] In some embodiments, Figures 2 to 4 As shown, the first electrode 411 and the second electrode 412 are arranged at an interval on the orthographic projection of the substrate 10 , and the third electrode 421 and the fourth electrode 422 are arranged at an interval on the orthographic projection of the substrate 10 .

[0087] The first electrode 411 and the second electrode 412 are arranged at intervals in the orthographic projection of the substrate 10, that is, there is an interval between the first electrode 411 and the second electrode 412 in the direction parallel to the plane where the substrate 10 is located. Similarly, the third electrode 421 and the fourth electrode 422 are arranged at intervals in the orthographic projection of the substrate 10, that is, there is an interval between the third electrode 421 and the fourth electrode 422 in the direction parallel to the plane where the substrate 10 is located. On this basis, the directions of the electric fields formed by the first control unit 41 and the second control unit 42 are both parallel to the plane where the substrate 10 is located.

[0088] It should be noted that the first electrode 411 and the second electrode 412 can have a variety of structural shapes. For example, the orthographic projections of the first electrode 411 and the second electrode 412 on the substrate 10 can be rectangular structures, in which case the first electrode 411 and the second electrode 412 are arranged side by side in a single direction parallel to the substrate 10. Alternatively, the orthographic projections of the first electrode 411 and the second electrode 412 on the substrate 10 can also be annular structures, in which one annular structure is sleeved on the outer circumference of the other annular structure and is arranged at intervals from each other. The embodiment of the present application is not limited to this, as long as the orthographic projections of the first electrode 411 and the second electrode 412 on the substrate 10 are arranged at intervals so that the first adjustment portion 31 is sandwiched between the first electrode 411 and the second electrode 412. The relationship between the third electrode 421 and the fourth electrode 422 is similar to this, and the embodiment of the present application will not be repeated.

[0089] In addition, the embodiments of the present application do not limit the positional relationship between the first electrode 411 and the second electrode 412 relative to the third electrode 421 and the fourth electrode 422. The orthographic projection of the first electrode 411 on the substrate 10 can be overlapped with the orthographic projection of one of the third electrode 421 and the fourth electrode 422 on the substrate 10, or the orthographic projection of the first electrode 411 on the substrate 10 can also be located outside the orthographic projection of the third electrode 421 and the fourth electrode 422 on the substrate 10, and the same applies to the second electrode 412.

[0090] In the embodiment of the present application, the two electrode structures of the first control unit 41 and the two electrode structures of the second control unit 42 are arranged to be spaced apart in a direction parallel to the plane of the substrate 10, so that the first electrode 411, the second electrode 412 and the first adjustment unit 31 can be located at the same height position in the thickness direction Z, and the third electrode 421, the fourth electrode 422 and the second adjustment unit 32 can be located at the same height position in the thickness direction Z. In this way, the influence of the two electrode structures of the first control unit 41 and the two electrode structures of the second control unit 42 on the thickness dimension of the display panel 100 can be reduced, and the occupation of the electrode structure on other film layer spaces inside the display panel 100 can be reduced, which helps to realize the lightweight design of the display panel 100 and reduces the difficulty of layout of the internal structure of the display panel 100.

[0091] In some embodiments, Figure 3 and Figure 4 As shown, at least part of the first electrode 411 overlaps with the third electrode 421 and is spaced apart in the thickness direction Z of the display panel 100 , and at least part of the second electrode 412 overlaps with the fourth electrode 422 and is connected in the thickness direction Z of the display panel 100 .

[0092] At least part of the structure of the first electrode 411 overlaps with the third electrode 421 in the thickness direction Z of the display panel 100, which means that there is an overlapping area in the orthographic projection of the first electrode 411 and the third electrode 421 on the substrate 10, which helps to reduce the adverse effect of the existence of the first electrode 411 and the third electrode 421 on the spacing between adjacent sub-pixels 21. The first electrode 411 and the third electrode 421 are arranged at intervals in the thickness direction Z, which means that the first electrode 411 and the second electrode 412 are insulated from each other, which can meet the needs of the first control unit 41 and the second control unit 42 to form different electric field structures that are independent of each other.

[0093] Similarly, at least part of the structure of the second electrode 412 overlaps with the fourth electrode 422 in the thickness direction Z of the display panel 100, which means that there is an overlapping area in the orthographic projection of the second electrode 412 and the fourth electrode 422 on the substrate 10, which helps to reduce the adverse effect of the existence of the second electrode 412 and the fourth electrode 422 on the spacing between adjacent sub-pixels 21. The second electrode 412 and the fourth electrode 422 are connected in the thickness direction Z, which means that the second electrode 412 and the fourth electrode 422 can be driven and controlled by the same signal. On this basis, only a single signal line needs to be connected to one of the second electrode 412 and the fourth electrode 422, so that the second electrode 412 and the fourth electrode 422 have voltage signals at the same time, thereby meeting the electric field formation needs of the first control unit 41 and the second control unit 42.

[0094] Further optionally, the second electrode 412 and the fourth electrode 422 are connected and arranged as a whole, that is, the second electrode 412 and the fourth electrode 422 include the same material and are prepared and formed together in the same process. This method helps to reduce the difficulty of preparing the second electrode 412 and the fourth electrode 422, improve preparation efficiency and reduce corresponding costs.

[0095] The embodiment of the present application does not limit the relationship between the first electrode 411 and the third electrode 421. Optionally, the first electrode 411 and the third electrode 421 may also include the same material, and in the process of preparing the first electrode 411 and the third electrode 421, a continuous structure may be formed first, and then a part of the structure in the continuous structure may be removed by etching or other processes to form the first electrode 411 and the third electrode 421 that are spaced apart.

[0096] In summary, in the embodiment of the present application, the first electrode 411 and the third electrode 421 are arranged to overlap in correspondence with the orthographic projection, and the second electrode 412 and the fourth electrode 422 are arranged to overlap in correspondence with the orthographic projection, so as to reduce the adverse effect of the first control unit 41 and the second control unit 42 on the distance between adjacent sub-pixels 21, which is beneficial to improve the resolution and viewing experience of the display panel 100.

[0097] Furthermore, by arranging the first electrode 411 and the third electrode 421 at intervals, the electric field structures corresponding to the first control unit 41 and the second control unit 42 are independent of each other, thereby meeting the need of the display panel 100 to drive and control the first adjustment unit 31 and the second adjustment unit 32 respectively. And by connecting the second electrode 412 and the fourth electrode 422, only a single signal line is required to meet the signal needs corresponding to the second electrode 412 and the fourth electrode 422, thereby reducing the number of signal lines in the display panel 100 and reducing the difficulty of wiring layout in the display panel 100.

[0098] In some embodiments, Figures 2 to 4 As shown, the orthographic projections of the first electrode 411 and the second electrode 412 on the substrate 10 are both arranged around the sub-pixel 21, and are spaced to form a first annular space, and the first adjustment portion 31 is arranged in the first annular space. The orthographic projections of the third electrode 421 and the fourth electrode 422 on the substrate 10 are both arranged around the sub-pixel 21, and are spaced to form a second annular space.

[0099] The orthographic projections of the first electrode 411 and the second electrode 412 on the substrate 10 are both annular structures, in which one annular structure is arranged on the outer circumference of the other annular structure, and they are spaced apart from each other to form a first annular space for accommodating the first adjustment portion 31. Under this design, in addition to forming an electric field to control the first adjustment portion 31, the first electrode 411 and the second electrode 412 can also limit and protect the first adjustment portion 31, thereby reducing the risk of interference between the first adjustment portion 31 and other film layer structures, thereby improving the reliability of the display panel 100.

[0100] Furthermore, the orthographic projection of the first adjustment portion 31 on the substrate 10 also presents a ring-shaped structure. In this case, when the first control portion 41 controls the first adjustment portion 31 to have a smaller light transmittance, the first adjustment portion 31 can absorb part of the large-viewing angle light emitted by the sub-pixel 21 and inclined in multiple directions, thereby helping to achieve the all-round anti-peeping display function of the display panel 100. The third electrode 421, the fourth electrode 422 and the corresponding second adjustment portion 32 are the same, and the embodiment of the present application does not limit this.

[0101] In summary, in the embodiment of the present application, the first electrode 411 and the second electrode 412 can not only control the light transmittance of the first adjustment portion 31, but also play a role in limiting protection for the first adjustment portion 31, thereby improving the reliability of the display panel 100. At the same time, the orthographic projection corresponding to the first adjustment portion 31 under such a design can be a ring-shaped structure, which helps to achieve the all-round anti-peeping function of the display panel 100. Furthermore, by selectively adjusting the light transmittance of the first adjustment portion 31 and the second adjustment portion 32, the display panel 100 can have different visible viewing angles in different working modes, thereby improving the display flexibility of the display panel 100 and meeting the use needs in different situations.

[0102] In some embodiments, the first electrode 411 is disposed to surround the second electrode 412 , and the third electrode 421 is disposed to surround the fourth electrode 422 .

[0103] In combination with the foregoing, it can be seen that the orthographic projections of the first electrode 411, the second electrode 412, the third electrode 421, and the fourth electrode 422 on the substrate 10 are all annular structures, and the first electrode 411 and the third electrode 421 are spaced apart in the thickness direction Z, while the second electrode 412 and the fourth electrode 422 are connected to each other. On this basis, the second electrode 412 and the fourth electrode 422 can be prepared together with the same material, that is, the second electrode 412 and the fourth electrode 422 can form a complete and continuous electrode structure together. However, for the first electrode 411 and the third electrode 421, both can be prepared by etching a single continuous electrode structure.

[0104] In view of this, in order to reduce the difficulty of preparing the first electrode 411 and the third electrode 421 respectively, the embodiment of the present application arranges the first electrode 411 and the third electrode 421 on the peripheral side of the second electrode 412 and the fourth electrode 422. In this way, the two electrode structures can be processed from the peripheral side of the first electrode 411 and the third electrode 421, which helps to reduce the overall preparation difficulty of the conductive control part 40 and is beneficial to improving the preparation yield.

[0105] In some embodiments, see Figure 3 , Figure 4 , Fig. 9 as well as Fig.10 The display panel 100 also includes a first conductor layer 50 and a second conductor layer 60 which are arranged on both sides of the conductive control part 40 along the thickness direction Z. The first conductor layer 50 includes a plurality of first conductor parts 51 which are insulated and electrically connected to the first electrode 411 and the third electrode 421 respectively. The second conductor layer 60 includes a second conductor part 61, and a single second conductor part 61 is electrically connected to the second electrode 412 and the fourth electrode 422 at the same time.

[0106] The first conductor layer 50 and the second conductor layer 60 are film layer structures including conductor materials and used to provide signal voltage to the conductive control part 40 to meet the needs of electric field formation. The first conductor layer 50 and the second conductor layer 60 are arranged on both sides of the conductive control part 40 along the thickness direction Z, wherein the first conductor layer 50 can be located on the side of the conductive control part 40 facing the substrate 10, or can also be arranged on the side of the conductive control part 40 facing away from the substrate 10, and the embodiments of the present application are not limited to this.

[0107] The first conductor layer 50 includes a plurality of first conductor portions 51, some of which are used to be electrically connected to the first electrode 411, and some of which are used to be electrically connected to the third electrode 421. On this basis, in order to meet the independent requirements of the electric field structures corresponding to the first control portion 41 and the second control portion 42, the first conductor portion 51 used to connect the first electrode 411 and the first conductor portion 51 used to connect the third electrode 421 need to be insulated from each other and transmit different signal voltages to the first electrode 411 and the third electrode 421, respectively.

[0108] It should be noted that since there are multiple first control parts 41, the number of first electrodes 411 is also multiple. On this basis, the first conductor parts 51 used to connect different first electrodes 411 can be connected to each other or insulated from each other. Similarly, the first conductor parts 51 used to connect different third electrodes 421 can be connected to each other or insulated from each other.

[0109] The second conductor layer 60 includes a second conductor portion 61, which is used to electrically connect the second electrode 412 and the fourth electrode 422. Since the second electrode 412 and the fourth electrode 422 are connected, the second conductor portion 61 only needs to be connected to one of the second electrode 412 and the fourth electrode 422 to transmit the same signal voltage to the second electrode 412 and the fourth electrode 422.

[0110] Different from the first conductor layer 50, only one second conductor portion 61 may be provided, or multiple second conductor portions 61 may be provided. Specifically, multiple second conductor portions 61 may be provided, and multiple second conductor portions 61 may be connected to each other, or may be insulated from each other. Alternatively, in other embodiments, only one second conductor portion 61 may be provided, and one second conductor portion 61 may be connected to multiple second electrodes 412 at the same time.

[0111] In the embodiment of the present application, by setting up the first conductor layer 50 and the second conductor layer 60, corresponding control signals can be transmitted to the first electrode 411, the second electrode 412, the third electrode 421 and the fourth electrode 422 to meet the independent requirements of the first control unit 41 and the second control unit 42 for the electric field structure, and meet the requirements of free switching of the display panel 100 in different working modes.

[0112] In some embodiments, Figure 3 , Figure 4 , Fig. 9 and Fig.10 As shown, the first electrode 411 is disposed around the second electrode 412 , the third electrode 421 is disposed around the fourth electrode 422 , and the first conductor layer 50 is located on a side of the second conductor layer 60 facing the substrate 10 .

[0113] The orthographic projections of the first electrode 411, the second electrode 412, the third electrode 421 and the fourth electrode 422 on the substrate 10 are all annular structures, and the second electrode 412 and the fourth electrode 422 are inner circle electrodes, and the first electrode 411 and the third electrode 421 are outer circle electrodes. During the preparation process, the film layer located on the side of the conductive control part 40 close to the substrate 10 in the first conductor layer 50 and the second conductor layer 60 is first prepared and formed, and then the conductive control part 40 is formed, and part of the electrode structure in the conductive control part 40 is connected to the lower conductor layer by laser welding or the like. On this basis, since the second electrode 412 and the fourth electrode 422 are inner circle electrodes, from an operational perspective, it is difficult to connect the second electrode 412 to the lower conductor layer, and there is a risk of poor contact or damage to the electrode structure caused by improper operation. Among them, in Figure 4 The connection positions of the inner circle electrode and the outer circle electrode relative to the conductor layer are indicated by black circles.

[0114] In view of this, the embodiment of the present application arranges the first conductor layer 50 on the side of the second conductor layer 60 facing the substrate 10, so that the first conductor layer 50 and the conductive control part 40 are formed in sequence during the preparation process, and then the first electrode 411 and the third electrode 421 can be respectively connected to different first conductor parts 51 from the outer peripheral side of the first electrode 411 and the third electrode 421 by laser welding or the like, and then the second conductor layer 60 is formed, and finally the second electrode 412 and the fourth electrode 422 are connected to the second conductor part 61 from the side of the second conductor layer 60 away from the substrate 10 by laser welding or the like. This design helps to reduce the difficulty of preparing the first conductor layer 50, the second conductor layer 60 and the conductive control part 40, and can improve the connection reliability of the conductive control part 40 relative to the first conductor layer 50 and the second conductor layer 60, thereby improving the preparation yield of the display panel 100.

[0115] In some embodiments, see Figure 3 , Figure 4 , Fig. 9 as well as Fig.11 , the first conductor layer 50 is located on the side of the second conductor layer 60 facing the substrate 10, the first electrode 411 includes a first body portion 4111 and a first connection portion 4112 connected to the side of the first body portion 4111 facing the substrate 10, and the first body portion 4111 is electrically connected to the first conductor portion 51 through the first connection portion 4112. The third electrode 421 includes a second body portion 4211 and a second connection portion 4212 connected to the side of the second body portion 4211 facing the substrate 10, and the second body portion 4211 is electrically connected through the second connection portion 4212. The first body portion 4111 and the second body portion 4211 overlap and are spaced apart in the thickness direction Z, and the orthographic projection of the first connection portion 4112 on the substrate 10 is located outside the orthographic projection of the first body portion 4111 and the first connection portion 4112 on the substrate 10.

[0116] The first body portion 4111 is a partial structure of the first electrode 411 for being arranged opposite to the second electrode 412 to form an electric field, and the first connection portion 4112 is a partial structure of the first electrode 411 for connecting the first body portion 4111 and the first conductor portion 51. The first body portion 4111 may be arranged around the second electrode 412 and the first adjustment portion 31, and the first connection portion 4112 is at least partially located on a side of the first body portion 4111 facing the substrate 10.

[0117] The second body portion 4211 is a partial structure of the third electrode 421 for being arranged opposite to the fourth electrode 422 to form an electric field, and the second connection portion 4212 is a partial structure of the third electrode 421 for connecting the second body portion 4211 and the first conductor portion 51. The second body portion 4211 may be arranged around the fourth electrode 422 and the second adjustment portion 32, and the second connection portion 4212 is at least partially located on a side of the second body portion 4211 facing the substrate 10.

[0118] The second main body portion 4211 is located on the side of the first main body portion 4111 away from the substrate 10, and the first main body portion 4111 and the second main body portion 4211 overlap and are spaced apart in the thickness direction Z, that is, the orthographic projection of the first main body portion 4111 on the substrate 10 and the orthographic projection of the second main body portion 4211 on the substrate 10 have an overlapping area, and there is a spacing area between the first main body portion 4111 and the second main body portion 4211 in the thickness direction Z.

[0119] Furthermore, in order to meet the transmission needs of corresponding signals between the first electrode 411 and the third electrode 421 and reduce the contact interference between the first electrode 411 and the third electrode 421, the embodiment of the present application also sets the orthographic projection of the first connecting portion 4112 on the substrate 10 to the first main body portion 4111 and outside the orthographic projection of the first connecting portion 4112 on the substrate 10, so that the end of the second connecting portion 4212 connected to the second main body portion 4211 can extend to the first conductor layer 50 along the thickness direction Z direction close to the substrate 10 without contacting the first main body portion 4111 and the first connecting portion 4112, thereby realizing the mutual connection between the third electrode 421 and the first conductor portion 51 and meeting the insulation needs between the first electrode 411 and the third electrode 421.

[0120] In some embodiments, see Fig.10 and Fig.12 The second conductor portion 61 is in a planar structure and includes a plurality of light exit holes 62 , and the orthographic projection of the sub-pixel 21 on the substrate 10 is located within the orthographic projection of the light exit hole 62 on the substrate 10 .

[0121] Considering that the second electrode 412 and the fourth electrode 422 can be connected to each other and multiple fourth electrodes 422 can also be controlled by the same signal voltage, the embodiment of the present application sets the second conductor portion 61 as a planar structure, so that the orthographic projection of the second conductor portion 61 on the substrate 10 can overlap with the orthographic projection of the fourth electrode 422 on the substrate 10, and the second conductor portion 61 can be connected to multiple fourth electrodes 422 at the same time, thereby reducing the difficulty of preparing the second conductor portion 61 while meeting the needs of corresponding electrical signal transmission of multiple second electrodes 412 and multiple fourth electrodes 422, and helping to reduce the corresponding resistance value of the second conductor portion 61, thereby improving the reliability of signal transmission.

[0122] The second conductor portion 61 is provided with a plurality of light exit holes 62, which are arranged to penetrate the second conductor portion 61 along the thickness direction Z, and the positions of the light exit holes 62 are arranged to correspond to the positions of the sub-pixels 21, so that at least part of the light emitted by the sub-pixels 21 can pass through the light exit holes 62 and penetrate the second conductor layer 60, thereby achieving a display effect.

[0123] It should be noted that the second conductor part 61 may include a conductive transparent material, such as indium tin oxide, etc. On this basis, the light emitted by the sub-pixel 21 can not only pass through the second conductor layer 60 through the light exit hole 62, but also pass through the second conductor part 61 to pass through the second conductor layer 60. In this case, the display panel 100 can control the light adjustment part 30 to have a larger light transmittance, so that the display panel 100 can achieve both positive viewing angle light emission and wide viewing angle light emission. At the same time, the existence of the light exit hole 62 can reduce the absorption effect of the second conductor layer 60 on the positive viewing angle light emitted by the sub-pixel 21, thereby improving the display effect and the viewing experience of the display panel 100 at the positive viewing angle.

[0124] In summary, in the embodiment of the present application, by setting the second conductor part 61 as a planar structure, it is helpful to reduce the voltage value corresponding to the second conductor part 61, thereby improving the reliability of the signal transmission corresponding to the second conductor part 61, and at the same time, it is also helpful to reduce the difficulty of manufacturing the second conductor part 61 and improve the manufacturing efficiency. Further, by setting the light exit hole 62 on the second conductor part 61, the light exit hole 62 can be used to reduce the influence of the second conductor layer 60 on the normal viewing angle light emitted by the sub-pixel 21, thereby improving the display effect of the display panel 100 at the normal viewing angle and improving the viewing experience.

[0125] In some embodiments, Figure 4 As shown, the first conductor layer 50 is located on the side of the second conductor layer 60 facing the substrate 10 , the orthographic projection of the second body portion 4211 on the substrate 10 is located within the orthographic projection of the second conductor portion 61 on the substrate 10 , and the second body portion 4211 is spaced apart from the second conductor layer 60 .

[0126] For the first conductor layer 50, since the first conductor portion 51 needs to be electrically connected to the outer circle electrodes, namely the first electrode 411 and the third electrode 421, the orthographic projection of the first conductor portion 51 on the substrate 10 can be located outside the orthographic projection of the inner circle electrodes, namely the second electrode 412 and the fourth electrode 422 on the substrate 10, so that the first conductor portion 51 can be disconnected from the second electrode 412 and the fourth electrode 422, thereby satisfying the insulation requirement between the first conductor portion 51 and the second electrode 412 and the fourth electrode 422.

[0127] As for the second conductor layer 60, since the second conductor portion 61 needs to be electrically connected to the inner circle electrodes, namely the second electrode 412 and the fourth electrode 422, and the second conductor portion 61 can be a planar structure, the orthographic projection of the second conductor portion 61 on the substrate 10 will overlap with the orthographic projections of the first electrode 411 and the third electrode 421 on the substrate 10. On this basis, in order to meet the insulation requirements of the second conductor portion 61 relative to the first electrode 411 and the third electrode 421, the first electrode 411 and the third electrode 421 need to be spaced apart from the second conductor portion 61 in the thickness direction Z.

[0128] Furthermore, in the embodiment of the present application, since the first conductor layer 50 is located on the side of the second conductor layer 60 facing the substrate 10, in the thickness direction Z, the second body portion 4211 in the third electrode 421 is arranged closer to the second conductor portion 61 relative to the first body portion 4111 in the first electrode 411. On this basis, by arranging the second body portion 4211 and the second conductor portion 61 at intervals in the thickness direction Z, the first electrode 411 and the third electrode 421 are both spaced apart from the second conductor portion 61 by a certain distance, thereby satisfying the insulation requirements of the first electrode 411 and the third electrode 421 relative to the second conductor portion 61 and improving the reliability of signal transmission.

[0129] In some embodiments, the first electrode 411 , the second electrode 412 , the third electrode 421 , and the fourth electrode 422 all include a conductive transparent material.

[0130] In the embodiment of the present application, considering that the conductive control part 40 has a certain size in the thickness direction Z, part of the light emitted by the sub-pixel 21 will propagate to the electrode structure in the conductive control part 40. On this basis, in order to reduce the influence of the electrode structure on the display effect, the first electrode 411, the second electrode 412, the third electrode 421 and the fourth electrode 422 all include conductive transparent materials, such as indium tin oxide, etc., so that the light propagating to the electrode structure can pass through the electrode structure and continue to move, thereby helping to achieve the wide viewing angle light output requirement of the display panel 100 in some cases.

[0131] In some embodiments, Figure 3 and Figure 4 As shown, the light adjustment part 30 further includes a third adjustment part 33 disposed on a side of the second adjustment part 32 away from the substrate 10 , and the conductive control part 40 includes a third control part 43 , which controls the light transmittance of the third adjustment part 33 .

[0132] In addition to the first adjustment part 31 and the second adjustment part 32, the light adjustment part 30 also includes a third adjustment part 33. The third adjustment part 33 is also a structure that can change its own light transmittance under the action of an electric field. For example, the third adjustment part 33 can include at least one of light-shielding particles and an electrochromic unit. Further optionally, the first adjustment part 31, the second adjustment part 32, and the third adjustment part 33 all include an electrochromic unit, and the three are connected and arranged as a whole.

[0133] The conductive control unit 40 also includes a third control unit 43, which is used to form an electric field structure different from the first control unit 41 and the second control unit 42, and the electric field formed by the third control unit 43 can pass through the third adjustment unit 33 to achieve an adjustment effect on the light transmittance of the third adjustment unit 33.

[0134] The embodiment of the present application does not limit the specific structural composition of the third control unit 43. Optionally, the third control unit 43 includes a fifth electrode 431 and a sixth electrode 432 that are opposite to each other, and the second electrode 412, the fourth electrode 422, and the sixth electrode 432 are connected together in the thickness direction Z to form a common electrode structure, and the positive projection of the common electrode structure on the substrate 10 is a ring-shaped structure, and the first electrode 411, the third electrode 421, and the fifth electrode 431 are all arranged around the circumference of the common electrode, and the first electrode 411, the third electrode 421, and the fifth electrode are spaced and insulated from each other.

[0135] In the embodiment of the present application, the light adjustment part 30 is additionally provided with a third adjustment part 33, and the third adjustment part 33 is located on the side of the second adjustment part 32 away from the substrate 10. The provision of the third adjustment part 33 can increase the corresponding working mode of the display panel 100, so that when the first control part 41, the second control part 42 and the third control part 43 respectively control the first adjustment part 31, the second adjustment part 32 and the third adjustment part 33 to have a small light transmittance, the visible viewing angle range of the display panel 100 can be further reduced, so as to meet more stringent scene requirements and improve the use flexibility and applicability of the display panel 100.

[0136] In some embodiments, the device layer 20 includes a plurality of pixel units 22 arranged repeatedly, the pixel unit 22 includes a first sub-pixel 21a, a second sub-pixel 21b, and a third sub-pixel 21c arranged along a first direction X and having different colors, the first sub-pixel 21a has a size L1 in the first direction X, the second sub-pixel 21b has a size L2 in the first direction X, the third sub-pixel 21c has a size L3 in the first direction X, and the light adjustment unit 30 has a size H in the thickness direction Z. Wherein, 0.8*(L1+L2+L3) / 3≤H≤1.5*(L1+L2+L3) / 3.

[0137] A single repeating unit includes at least a first sub-pixel 21a, a second sub-pixel 21b and a third sub-pixel 21c, and the colors of the first sub-pixel 21a, the second sub-pixel 21b and the third sub-pixel 21c are different from each other. Optionally, the first sub-pixel 21a, the second sub-pixel 21b and the third sub-pixel 21c are respectively one of the red sub-pixel 21, the green sub-pixel 21 and the blue sub-pixel 21.

[0138] The first direction X may be the arrangement direction of the plurality of sub-pixels 21. Due to differences in size, shape and other factors, the sizes of different sub-pixels 21 in the first direction X may be the same or different. On this basis, “(L1+L2+L3) / 3” in the formula may represent the average size of the plurality of sub-pixels 21 in the first direction X.

[0139] The dimension of the light adjustment part 30 in the thickness direction Z is H. When the adjustment parts in the light adjustment part 30 are sequentially connected in the thickness direction Z, the dimension H is the sum of the dimensions of the adjustment parts in the thickness direction Z. When the adjustment parts in the light adjustment part 30 are spaced apart from each other in the thickness direction Z, the dimension H is the sum of the dimensions of the adjustment parts in the thickness direction Z and the gap dimensions between adjacent adjustment parts in the thickness direction Z.

[0140] Furthermore, in the embodiment of the present application, by setting the dimension H to be no less than 0.8*(L1+L2+L3) / 3, the light adjustment part 30 can have a certain dimension in the thickness direction Z, so that when each adjustment part in the light adjustment part 30 is controlled to have a small light transmittance, the display panel 100 can only realize the display function within a local viewing angle range, thereby satisfying the anti-peeping display effect. At the same time, the dimension H is set to be no greater than (L1+L2+L3) / 3, thereby reducing the adverse effect of the light adjustment part 30 on the overall thickness of the display panel 100, which helps to achieve a lightweight design.

[0141] Second, see Fig.13 An embodiment of the present application provides a display device 200, and the display device 200 includes the display panel 100 in any of the aforementioned embodiments.

[0142] It should be noted that the display device 200 provided in the embodiment of the present application has the beneficial effects of the display panel 100 in any of the aforementioned embodiments. Please refer to the aforementioned description of the beneficial effects of the display panel 100 for details, and the embodiment of the present application will not be repeated.

[0143] For further information, see Fig.14The display device 200 provided in the embodiment of the present application can be applied to the field of vehicle-mounted display, wherein the display device 200 is arranged at the co-pilot position. During the driving of the vehicle, the display device 200 can control the light adjustment part 30 through the conductive control part 40, so that at least part of the adjustment parts in the light adjustment part 30 have a smaller light transmittance, thereby reducing the impact of the display screen on the driver and improving driving safety. Furthermore, according to different environments and weather conditions, the display device 200 can automatically or manually control the number of adjustment parts in the light adjustment part 30 with a smaller light transmittance, thereby meeting the needs of different scenarios, and has strong flexibility and applicability.

[0144] When the vehicle stops, the display device 200 can control the light adjustment part 30 through the conductive control part 40, so that at least part of the light adjustment part 30 has a large light transmittance, so that people in the main driving position can observe the display screen together to meet the display needs.

[0145] Third, see Fig.15 16 , the present application embodiment provides a method for manufacturing a display panel 100 , including:

[0146] S100: forming a device layer on one side of the substrate.

[0147] See also Fig.16a In step S100, the substrate 10 mainly plays a supporting role, and other film layer structures and device structures are stacked on the substrate 10 in sequence. The device layer 20 is the main film layer structure used to realize the light-emitting function in the display panel 100. The device layer 20 is arranged on one side of the substrate 10 along the thickness direction Z. The device layer 20 includes a plurality of sub-pixels 21. Specifically, the device layer 20 may include an anode layer, a light-emitting layer, and a cathode layer stacked in a direction away from the substrate 10. On this basis, the sub-pixel 21 may include an anode structure located in the anode layer, a cathode structure located in the cathode layer, and a light-emitting portion located in the light-emitting layer. The anode and the cathode jointly drive and control the light-emitting portion to realize the light-emitting function.

[0148] The sub-pixel 21 may have various forms. For example, the light-emitting portion in the sub-pixel 21 may be an organic light-emitting material, that is, the display panel 100 may be an organic light-emitting display panel 100. On this basis, the light-emitting portion may be formed by stacking multiple film layers. For example, the light-emitting portion may include a stacked hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, and an electron injection layer. Among them, the multiple sub-pixels 21 may be used to emit light of different colors, for example, the multiple sub-pixels 21 include but are not limited to a red sub-pixel 21 for emitting red light, a green sub-pixel 21 for emitting green light, and a blue sub-pixel 21 for emitting blue light.

[0149] S110: forming a light adjustment portion on a side of the device layer away from the substrate.

[0150] See also Fig.16b In step S110, the light adjustment part 30 is arranged on the side of the device layer 20 away from the substrate 10, and the light adjustment part 30 is used to adjust part of the light emitted from the sub-pixel 21. The light adjustment part 30 includes a first adjustment part 31 and a second adjustment part 32 stacked in a direction away from the substrate 10. The first adjustment part 31 and the second adjustment part 32 are both located on the side of the light emitting surface of the sub-pixel 21 and the orthographic projection on the substrate 10 is arranged on the peripheral side of the sub-pixel 21. On this basis, part of the obliquely emitted light emitted by the sub-pixel 21 can be moved to the position of the first adjustment part 31 or the second adjustment part 32.

[0151] In some optional embodiments, the light adjustment portion 30 includes an electrochromic material and is prepared by printing.

[0152] S120: forming a conductive control portion on a side of the device layer facing away from the substrate.

[0153] See also Fig.16c In step S120, the conductive control unit 40 includes a first control unit 41 and a second control unit 42, wherein the first control unit 41 controls the light transmittance of the first adjustment unit 31, and the second control unit 42 controls the light transmittance of the second adjustment unit 32. Specifically, the first control unit 41 and the second control unit 42 can form different electric fields that are independent of each other, wherein the electric field formed by the first control unit 41 can pass through the first adjustment unit 31 to control the light transmittance of the first adjustment unit 31, and the electric field formed by the second control unit 42 can pass through the second adjustment unit 32 to control the light transmittance of the second adjustment unit 32. That is, the first control unit 41 can change the light absorption capacity of the first adjustment unit 31, and the second control unit 42 can change the light absorption capacity of the second adjustment unit 32.

[0154] It should be noted that both the light adjustment part 30 and the conductive control part 40 can have a variety of junction forms, and there can be a variety of positional relationships between the two. On this basis, the light adjustment part 30 and the conductive control part 40 can have a variety of preparation methods and preparation orders. In other words, depending on the actual situation, step S120 and step S110 can be swapped with each other, that is, the conductive control part 40 can be formed first, and then the light adjustment part 30 can be formed. Or in some other embodiments, the preparation of the light adjustment part 30 and the conductive control part 40 can also be interspersed with each other. For example, a partial structure of the conductive control part 40 can be formed first, then the light adjustment part 30 can be formed, and finally the remaining structure of the conductive control part 40 can be formed.

[0155] In the embodiment of the present application, the first control unit 41 and the second control unit 42 can independently control the light transmittance corresponding to the first adjustment unit 31 and the second adjustment unit 32, respectively. On this basis, according to different actual usage conditions, the light transmittance of the first adjustment unit 31 and the second adjustment unit 32 can be selectively adjusted respectively to flexibly change the visible viewing angle range corresponding to the display panel 100. While meeting the anti-peeping needs, display effects with different visible viewing angle ranges can also be achieved.

[0156] In some embodiments, see Fig.17 18 , the orthographic projections of the first adjusting portion 31 and the second adjusting portion 32 on the substrate 10 are both arranged to surround the orthographic projection of the sub-pixel 21 on the substrate 10, and the orthographic projection of the first adjusting portion 31 on the substrate 10 overlaps with the orthographic projection of the second adjusting portion 32 on the substrate 10. The first control portion 41 includes a first electrode 411 and a second electrode 412, and the second control portion 42 includes a third electrode 421 and a fourth electrode 422. In step S120, it includes:

[0157] S121: forming a conductive material portion that covers and surrounds the light adjustment portion.

[0158] See also Fig.18a In step S121, the conductive material portion 70 is a continuous and complete structure, and includes a first sub-portion 71 covering the outer wall of the light adjustment portion 30, a second sub-portion 72 covering the inner wall of the light adjustment portion 30, and a connecting portion 73 covering the side of the light adjustment portion 30 away from the substrate 10 and connecting the first sub-portion 71 and the second sub-portion 72.

[0159] The first sub-section 71, the second sub-section 72 and the connecting section 73 are made of the same material and are connected to each other as a whole. The connecting section 73 is used to connect the first sub-section 71 and the second sub-section 72. The first sub-section 71 is arranged on the outer peripheral side of the light adjustment section 30. The first sub-section 71 can be arranged in direct contact with the outer wall of the light adjustment section 30, or it can also be arranged at least partially spaced, that is, other structures can be filled between the first sub-section 71 and the light adjustment section 30. The second sub-section 72 is arranged on the inner side of the light adjustment section 30. Similarly, the second sub-section 72 can be arranged in direct contact with the inner wall of the light adjustment section 30, or it can also be arranged at least partially spaced.

[0160] S122: Patterning the conductive material portion.

[0161] See also Fig.18bIn step S122, patterning is a micro-machining method for creating complex patterns on the surface of a material. Through patterning, a first electrode and a third electrode are formed at intervals on the outer wall of the light adjustment unit 30, and a second electrode and a fourth electrode are formed at the inner wall of the light adjustment unit 30. The first electrode and the third electrode are both spaced relative to the second electrode and the fourth electrode. The first electrode and the second electrode are used to form the first control unit 41, and the third electrode and the fourth electrode are used to form the second control unit 42.

[0162] In combination with the above content, it can be known that the first sub-section 71 is used to form the first electrode and the third electrode, and the second sub-section 72 is used to form the second electrode and the fourth electrode. On this basis, the first electrode and the third electrode can be arranged relative to the second electrode and the fourth electrode in a variety of ways. Specifically, the insulating spacing setting of the inner and outer electrode structures of the light adjustment section 30 can be met by removing the connecting section 73, or the insulating spacing setting of the inner and outer electrode structures of the light adjustment section 30 can be met by removing a part of the structure of at least one of the first sub-section 71 and the second sub-section 72 near one end of the connecting section 73.

[0163] It should be noted that when a partial structural solution of removing at least one of the first sub-section 71 and the second sub-section 72 is adopted to realize that the first electrode and the third electrode are spaced relative to the second electrode and the fourth electrode, the connecting portion 73 will be retained and connected to at least one of the formed first electrode, the second electrode, the third electrode and the fourth electrode. On this basis, when a conductive layer is subsequently formed on the side of the light adjustment section 30 away from the substrate 10, when the conductive layer and the connecting portion 73 need to be connected to the same electrode structure, the conductive layer can be directly connected to the connecting portion 73 and realize signal transmission with the help of the connecting portion 73, and when the connecting portion 73 and the conductive layer are connected to different electrode structures, the conductive layer needs to be insulated from the connecting portion 73.

[0164] In addition, when the solution of removing the connection portion 73 is adopted, it can be achieved by etching from the side of the conductive material portion 70 facing away from the substrate 10 from top to bottom, which helps to reduce the difficulty of preparation.

[0165] In the embodiment of the present application, the first electrode, the second electrode, the third electrode and the fourth electrode all include the same material, and the four electrode structures can be manufactured by the same manufacturing process, which helps to reduce the manufacturing cost and improve the manufacturing efficiency.

[0166] In some embodiments, in step S122, part of the structure in the first sub-portion 71 is removed so that the first electrode 411 and the third are spaced apart from each other relative to the second electrode 412 and the fourth electrode 422; and / or part of the structure in the connecting portion 73 is removed so that the first electrode 411 and the third are spaced apart from each other relative to the second electrode 412 and the fourth electrode 422.

[0167] In combination with the foregoing content, it can be known that the first sub-section 71 is located at the periphery of the light adjustment section 30, and the connecting section 73 is located on the side of the light adjustment section 30 that is away from the substrate 10, that is, the first sub-section 71 and the connecting section 73 are both arranged on the outside of the light adjustment section 30, and the second sub-section 72 is located on the inside of the light adjustment section 30.

[0168] On this basis, the embodiment of the present application can choose to pattern at least one of the first sub-section 71 and the connecting section 73, so that the conductive material section 70 can be processed from the outside of the light adjustment section 30, which helps to reduce the difficulty of preparing the conductive control section 40, and also helps to reduce the impact of the patterning process on the light adjustment section 30, thereby improving the product yield.

[0169] In some embodiments, see Fig.19 and FIG. 20 , after step S110 and before step 120, further comprising:

[0170] S130: Printing and forming a resist structure on the surface of the light adjustment part.

[0171] See also Fig.20a In step S130, the plating resistance structure 80 includes a plating resistance material, which is a material that can protect certain areas from being covered by the plating structure during the plating process. The plating resistance structure 80 is arranged on the surface of the light adjustment part 30. Fig.20a In the figure, only the structures of the plating resist structure 80 and the light adjustment portion 30 are shown, and the plating resist structure 80 and the light adjustment portion 30 are distinguished by different hatching lines.

[0172] The position of the resist structure 80 relative to the light adjustment unit 30 depends on the area where the portion of the conductive material unit 70 is removed when the conductive material unit 70 is subsequently patterned. Fig.20b In step S122, the plating resist structure 80 is peeled off, and the partial structure of the conductive material portion 70 covering the plating resist structure 80 is separated together.

[0173] Further, at least part of the resist structure 80 is located on the outer wall of the light adjustment part 30, that is, the first sub-part can cover at least part of the resist structure 80, so that when the resist structure 80 is stripped, the first electrode 411 and the third electrode 421 can be formed to be spaced apart from each other. In some optional embodiments, the resist structure 80 includes at least two parts of the structure, in addition to the part of the structure used to satisfy the spaced arrangement of the first electrode 411 and the third electrode 421, in order to satisfy the spaced arrangement of the first electrode 411 and the third electrode 421 relative to the second electrode 412 and the fourth electrode 422, the other part of the structure of the resist structure 80 needs to be arranged on the first surface of the light adjustment part 30 on the side away from the substrate 10, or on the outer wall of the light adjustment part 30 close to the first surface, or on the inner wall of the light adjustment part 30 close to the first surface. In this way, only one stripping process is required to form the first electrode 411, the second electrode 412 and the third electrode 421 that are insulated from each other, and to meet the connection requirements of the second electrode 412 and the fourth electrode 422.

[0174] In the embodiment of the present application, considering that the first sub-section is located on the outer peripheral side of the light adjustment section 30, it is difficult to accurately form the first electrode 411 and the third electrode 421 that are spaced apart from each other by direct etching. Therefore, the resist structure 80 is formed by printing on the surface of the light adjustment section 30, and the resist structure 80 is stripped, so that the partial structure of the conductive material section 70 covering the resist structure 80 can be separated together, thereby meeting the preparation requirements of the first electrode 411 and the third electrode 421.

[0175] Although the embodiments disclosed in this application are as above, the contents described are only embodiments adopted for facilitating the understanding of this application and are not intended to limit the present invention. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of protection of this application shall still be subject to the scope defined in the attached claims.

[0176] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the replacement of other connection methods described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: include: substrate; A device layer is arranged on one side of the substrate, and the device layer includes a plurality of sub-pixels arranged at intervals; A light regulating part is arranged on a side of the device layer away from the substrate, the light regulating part comprises a first regulating part and a second regulating part stacked in a direction away from the substrate, and the orthographic projections of the first regulating part and the second regulating part on the substrate are both arranged on the peripheral side of the sub-pixel; The conductive control part includes a first control part and a second control part; The first control unit controls the light transmittance of the first adjustment unit, and the second control unit controls the light transmittance of the second adjustment unit.

2. The display panel according to claim 1, characterized in that: At least one of the first adjusting portion and the second adjusting portion includes an electrochromic unit.

3. The display panel according to claim 1, characterized in that: The orthographic projection of the first adjusting portion on the substrate surrounds the orthographic projection of the sub-pixel on the substrate; and / or, The orthographic projection of the second adjusting portion on the substrate surrounds the orthographic projection of the sub-pixel on the substrate.

4. The display panel according to claim 3, characterized in that: The device layer includes a plurality of pixel units arranged repeatedly, and the pixel unit includes a plurality of sub-pixels. The first adjustment portion surrounds the orthographic projection of the pixel unit on the substrate, and the second adjustment portion surrounds the orthographic projection of the pixel unit on the substrate.

5. The display panel according to claim 1, characterized in that: The orthographic projection of the first adjusting portion on the substrate is located on at least one side of the orthographic projection of the sub-pixel on the substrate along the first direction, and the orthographic projection of the second adjusting portion on the substrate is located on at least one side of the orthographic projection of the sub-pixel on the substrate along the second direction; The first direction intersects with the second direction, and both are parallel to the plane where the substrate is located.

6. The display panel according to claim 1, characterized in that: The orthographic projection of the first adjusting portion on the substrate is overlapped with the orthographic projection of the second adjusting portion on the substrate.

7. The display panel according to claim 6, characterized in that: The first adjusting portion and the second adjusting portion are connected and arranged integrally.

8. The display panel according to claim 1, characterized in that: The first control unit includes a first electrode and a second electrode which are insulated and spaced apart, and the first adjustment unit is sandwiched between the first electrode and the second electrode; The second control unit includes a third electrode and a fourth electrode that are insulated and spaced apart, and the second adjustment unit is sandwiched between the third electrode and the fourth electrode; The first electrode is insulated from the third electrode and the fourth electrode.

9. The display panel according to claim 8, characterized in that: The first electrode and the second electrode are arranged at an interval in the orthographic projection of the substrate; the third electrode and the fourth electrode are arranged at an interval in the orthographic projection of the substrate.

10. The display panel according to claim 9, characterized in that: At least a portion of the first electrode overlaps with the third electrode in the thickness direction of the display panel and is spaced apart from each other, and at least a portion of the second electrode overlaps with the fourth electrode in the thickness direction of the display panel and is connected to each other.

11. The display panel according to claim 10, characterized in that: The orthographic projections of the first electrode and the second electrode on the substrate are arranged to surround the sub-pixel and to form a first annular space, and the first adjusting portion is arranged in the first annular space; The orthographic projections of the third electrode and the fourth electrode on the substrate are both arranged to surround the sub-pixel and are spaced to form a second annular space. The second regulating portion is arranged in the second annular space.

12. The display panel according to claim 11, characterized in that: The first electrode is disposed to surround the second electrode, and the third electrode is disposed to surround the fourth electrode.

13. The display panel according to claim 10, characterized in that: It also includes a first conductor layer and a second conductor layer arranged on both sides of the conductive control part along the thickness direction of the display panel, the first conductor layer includes a plurality of first conductor parts that are insulated, and the plurality of first conductor parts are electrically connected to the first electrode and the third electrode respectively, and the second conductor layer includes a second conductor part, and a single second conductor part is electrically connected to the second electrode and the fourth electrode at the same time.

14. The display panel according to claim 13, characterized in that: The first electrode is arranged to surround the second electrode, and the third electrode is arranged to surround the fourth electrode; The first conductor layer is located on a side of the second conductor layer facing the substrate.

15. The display panel according to claim 13, characterized in that: The first conductor layer is located on a side of the second conductor layer facing the substrate, the first electrode comprises a first body portion and a first connecting portion connected to the first body portion on a side facing the substrate, and the first body portion is electrically connected to the first conductor portion via the first connecting portion; The third electrode includes a second body portion and a second connecting portion connected to the second body portion on a side facing the substrate, and the second body portion is electrically connected to the first conductor portion through the second connecting portion; The first body portion and the second body portion overlap and are spaced apart in the thickness direction of the display panel, and the orthographic projection of the second connection portion on the substrate is located outside the orthographic projection of the first body portion and the first connection portion on the substrate.

16. The display panel according to claim 15, characterized in that: The second conductor portion is in a planar structure and includes a plurality of light exit holes, and the orthographic projection of the sub-pixel on the substrate is located within the orthographic projection of the light exit hole on the substrate.

17. The display panel according to claim 16, characterized in that: The first conductor layer is located on a side of the second conductor layer facing the substrate, the orthographic projection of the second body portion on the substrate is located within the orthographic projection of the second conductor portion on the substrate, and the second body portion and the second conductor portion are spaced apart in a thickness direction of the display panel.

18. The display panel according to claim 9, characterized in that: The first electrode, the second electrode, the third electrode and the fourth electrode all include a conductive transparent material.

19. The display panel according to claim 1, characterized in that: The light adjustment part further includes a third adjustment part arranged on a side of the second adjustment part away from the substrate, and the conductive control part includes a third control part; Wherein, the third control unit controls the light transmittance of the third adjustment unit.

20. The display panel according to claim 1, characterized in that: The device layer includes a plurality of pixel units arranged repeatedly, the pixel units include a first sub-pixel, a second sub-pixel and a third sub-pixel arranged along a first direction and having different colors, the first sub-pixel has a size of L1 in the first direction, the second sub-pixel has a size of L2 in the first direction, the third sub-pixel has a size of L3 in the first direction, and the light adjustment portion has a size of H in the thickness direction of the display panel; Among them, 0.8*(L1+L2+L3) / 3≤H≤1.5*(L1+L2+L3) / 3.

21. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 20.

22. A method for preparing a display panel, characterized in that: include: Forming a device layer on one side of the substrate, the device layer comprising a plurality of sub-pixels arranged at intervals; A light regulating portion is formed on a side of the device layer away from the substrate, the light regulating portion comprising a first regulating portion and a second regulating portion stacked in a direction away from the substrate, and the orthographic projections of the first regulating portion and the second regulating portion on the substrate are both arranged on the periphery of the sub-pixel; Forming a conductive control portion on a side of the device layer away from the substrate, the conductive control portion comprising a first control portion and a second control portion; The first control unit controls the light transmittance of the first adjustment unit, and the second control unit controls the light transmittance of the second adjustment unit.

23. The preparation method according to claim 22, characterized in that: The orthographic projections of the first adjusting portion and the second adjusting portion on the substrate are both arranged to surround the orthographic projection of the sub-pixel on the substrate, and the orthographic projection of the first adjusting portion on the substrate overlaps with the orthographic projection of the second adjusting portion on the substrate; The first control unit includes a first electrode and a second electrode, and the second control unit includes a third electrode and a fourth electrode; The step of forming a conductive control portion on a side of the device layer away from the substrate comprises: forming a conductive material portion covering and surrounding the light adjustment portion, wherein the conductive material portion includes a first sub-portion covering an outer wall of the light adjustment portion, a second sub-portion covering an inner wall of the light adjustment portion, and a connecting portion covering a side of the light adjustment portion away from the substrate and connecting the first sub-portion and the second sub-portion; The conductive material portion is patterned to form the first electrode and the third electrode spaced apart at the outer wall, and the second electrode and the fourth electrode connected as one at the inner wall, wherein the first electrode and the third electrode are spaced apart relative to the second electrode and the fourth electrode.

24. The preparation method according to claim 23, characterized in that: In the patterning process of the conductive material portion, a part of the structure in the first sub-portion is removed so that the first electrode and the third electrode are both spaced apart relative to the second electrode and the fourth electrode; and / or, At least a portion of the structure in the connecting portion is removed, so that the first electrode and the third electrode are both spaced apart from each other relative to the second electrode and the fourth electrode.

25. The preparation method according to claim 23, characterized in that: After forming the light adjustment portion on the side of the device layer away from the substrate and before forming the conductive material portion covering and surrounding the light adjustment portion, the method further includes: Printing a resist structure on the surface of the light adjustment part; In the patterning process of the conductive material portion, the plating resist structure is peeled off, and a part of the conductive material portion that covers the plating resist structure is separated together.

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