Display panel and display device

Abstract

A display panel and a display device. The display panel includes: a substrate (I); a light-emitting unit (6) disposed on the substrate (I) and including a first electrode (601), a second electrode (603), and a light-emitting layer (602), wherein the first electrode (601) and the second electrode (603) are disposed opposite to each other, and the light-emitting layer (602) is located between the first electrode (601) and the second electrode (603); and a coil (4) disposed on the substrate (I), wherein the coil (4) is capable of generating current for the light-emitting unit (6) to operate, and the coil (4) and the first electrode (601) are disposed opposite to each other. One electrode (601) and / or the second electrode (603) are electrically connected; a voltage regulator circuit (13), a rectifier circuit (14) and a drive circuit (16) are provided. The input terminal of the voltage regulator circuit (13) is electrically connected to the coil (4), the output terminal of the voltage regulator circuit (13) is electrically connected to the input terminal of the rectifier circuit (14), the output terminal of the rectifier circuit (14) is electrically connected to the input terminal of the drive circuit (16), and the output terminal of the drive circuit (16) is electrically connected to the light-emitting unit (6), which can improve the performance.

Description

Technical Field

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

[0002] With economic development, display panels are being used more and more widely in people's lives. A display panel mainly consists of a light-emitting unit. This unit includes two electrodes arranged opposite each other and a light-emitting layer located between the two electrodes. The two electrodes are electrically connected to a power source to supply power to the light-emitting layer. However, existing display panels have relatively poor performance. Summary of the Invention

[0003] The purpose of this disclosure is to provide a display panel and display device that can improve the user experience.

[0004] According to one aspect of this disclosure, a display panel is provided, comprising:

[0005] Substrate;

[0006] A light-emitting unit is disposed on the substrate and includes a first electrode, a second electrode, and a light-emitting layer. The first electrode and the second electrode are disposed opposite to each other, and the light-emitting layer is located between the first electrode and the second electrode.

[0007] A coil is disposed on the substrate, the coil is capable of generating a current to power the light-emitting unit, and the coil is electrically connected to the first electrode and / or the second electrode;

[0008] The system includes a voltage regulator circuit, a rectifier circuit, and a driver circuit. The input terminal of the voltage regulator circuit is electrically connected to the coil, the output terminal of the voltage regulator circuit is electrically connected to the input terminal of the rectifier circuit, the output terminal of the rectifier circuit is electrically connected to the input terminal of the driver circuit, and the output terminal of the driver circuit is electrically connected to the light-emitting unit.

[0009] Furthermore, the coil is electrically connected to the first electrode and the second electrode, and the display panel further includes:

[0010] A first planarization layer covers the coil and has a first window and a second window that expose the coil;

[0011] The light-emitting unit is disposed on the side of the first planarization layer facing away from the substrate, the first electrode extends into the first window and is electrically connected to the coil, and the second electrode extends into the second window and is electrically connected to the coil.

[0012] Furthermore, the display panel also includes a switching element disposed on the substrate; the coil is electrically connected to the first electrode, and the switching element is connected in series between the coil and the second electrode.

[0013] Furthermore, the switching element includes a transistor, the first terminal of which is electrically connected to the first electrode via the coil, and the second terminal of which is electrically connected to the second electrode.

[0014] Furthermore, the display panel also includes:

[0015] A second planarization layer is disposed on the side of the transistor facing away from the substrate, and the coil is disposed on the side of the second planarization layer facing away from the substrate and passes through the second planarization layer to be electrically connected to the first electrode of the transistor.

[0016] A first planarization layer is disposed on the side of the coil facing away from the substrate, and has a first window exposing the coil;

[0017] The light-emitting unit is located on the side of the first planarization layer facing away from the substrate, and the first electrode extends into the first window and is electrically connected to the coil.

[0018] Furthermore, the second electrode is located on the side of the first electrode facing away from the substrate, or the first electrode is located on the side of the second electrode facing away from the substrate.

[0019] Furthermore, the number of light-emitting units is multiple, and the multiple light-emitting units share a second electrode. The display panel also includes:

[0020] A pixel defining layer is disposed on the side of the first planarization layer facing away from the substrate, and has multiple openings. Multiple light-emitting units are disposed in the multiple openings in a corresponding manner, and the second electrode is located on the side of the first electrode facing away from the substrate.

[0021] The number of first windows is multiple, and the first electrodes of the multiple light-emitting units extend into the multiple first windows in a one-to-one correspondence to be electrically connected to the coil.

[0022] Furthermore, in the thickness direction of the substrate, the coil comprises multiple stacked coils, with adjacent coils connected in series.

[0023] Furthermore, the number of light-emitting units is multiple, and the multiple light-emitting units form an anti-counterfeiting pattern.

[0024] Furthermore, there are multiple light-emitting units, which form multiple light-emitting areas. The light-emitting areas have a strip-shaped structure, and at least two of the multiple light-emitting areas have different widths.

[0025] Furthermore, the number of light-emitting units is multiple, including a first light-emitting unit and a second light-emitting unit. The first light-emitting unit has a first orthographic projection on the substrate, and the second light-emitting unit has a second orthographic projection on the substrate. The first orthographic projection has a first boundary and a second boundary disposed opposite to each other, and a first center line located between the first boundary and the second boundary. The second orthographic projection has a third boundary and a fourth boundary disposed opposite to each other, and a second center line located between the third boundary and the fourth boundary. The first boundary, the second boundary, the first center line, the third boundary, the fourth boundary, and the second center line extend in the same direction. The first boundary and the third boundary are located on the same side of the second center line, the second boundary and the fourth boundary are located on the same side of the second center line, and the first boundary is located between the second center line and the third boundary.

[0026] Furthermore, the first centerline is located between the second centerline and the fourth boundary.

[0027] Furthermore, the fourth boundary is located between the second boundary and the first centerline.

[0028] Furthermore, the number of light-emitting units is multiple, and the multiple light-emitting units form one or more light-emitting areas. The light-emitting areas have a strip-shaped structure, and one or more protrusions are provided on the edge of the light-emitting area in the width direction.

[0029] Furthermore, the number of light-emitting units is multiple, and the multiple light-emitting units form one or more light-emitting areas, which are capable of displaying images with color deviation.

[0030] Furthermore, the coil and the light-emitting unit are located on opposite sides of the substrate, the voltage regulator circuit, the rectifier circuit, and the driving circuit are located on the same side of the substrate as the coil, and the driving circuit is electrically connected to the light-emitting unit through a flexible circuit board.

[0031] Furthermore, the display panel also includes:

[0032] A substrate is disposed on the side of the substrate facing away from the light-emitting unit. The voltage regulator circuit, the rectifier circuit, the driving circuit, and the coil are disposed on the surface of the substrate facing away from the substrate. One end of the flexible circuit board is electrically connected to the driving circuit, and the other end is electrically connected to the light-emitting unit.

[0033] According to one aspect of this disclosure, a display device is provided, including the aforementioned display panel.

[0034] Furthermore, the display device also includes:

[0035] The housing has an open end, and the display panel is disposed inside the housing, with the light-emitting side of the display panel facing the open end.

[0036] The display panel and display device disclosed herein allow the display panel to display even without power when an external electronic device equipped with a transmitting coil approaches the display panel of this embodiment. This is because the coil of this disclosure can generate a current for the light-emitting unit to operate through electromagnetic induction, thereby improving the display panel's performance. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of a display panel according to an embodiment of the present disclosure.

[0038] Figure 2 This is another schematic diagram of the display panel according to an embodiment of the present disclosure.

[0039] Figure 3 This is a circuit diagram of the coil and light-emitting unit in the embodiments of this disclosure.

[0040] Figure 4 This is a schematic diagram of a display panel containing transistors according to an embodiment of the present disclosure.

[0041] Figure 5 This is another schematic diagram of a display panel containing transistors according to an embodiment of this disclosure.

[0042] Figure 6 This is a circuit diagram of the coil, transistor, and light-emitting unit in the embodiments of this disclosure.

[0043] Figure 7 This is a schematic diagram of the light-emitting area in an embodiment of this disclosure.

[0044] Figure 8 yes Figure 7 A schematic diagram of the first and second light-emitting units in the structure shown.

[0045] Figure 9 This is another schematic diagram of the light-emitting area in an embodiment of this disclosure.

[0046] Figure 10 This is yet another schematic diagram of a display panel according to an embodiment of the present disclosure.

[0047] Figure 11 This is another schematic diagram of a display panel according to an embodiment of the present disclosure.

[0048] Figure 12 This is a circuit diagram of the display panel according to an embodiment of the present disclosure.

[0049] Figure 13 This is a schematic diagram of a display device according to an embodiment of the present disclosure.

[0050] Explanation of reference numerals in the attached figures: 1. Substrate; 2. Transistor; 201. Active layer; 202. Gate insulating layer; 203. Gate layer; 204. Interlayer insulating layer; 205. First electrode; 206. Second electrode; 3. Second planarization layer; 4. Coil; 5. First planarization layer; 6. Light-emitting unit; 601. First electrode; 602. Light-emitting layer; 603. Second electrode; 605. Second light-emitting unit; 606. Third light-emitting unit; 607. First light-emitting unit; 7. Pixel defining layer; 8. Insulating material layer; 9. First adhesive layer; 10. Substrate; 1. Buffer pad; 12. Second adhesive layer; 13. Voltage regulator circuit; 14. Rectifier circuit; 15. MUX circuit; 16. Driver circuit; 17. Flexible circuit board; 18. Circuit lead area; 19. Frame adhesive; 20. Cover plate; 21. Housing; 22. Third adhesive layer; 23. Light-emitting area; 24. Communication circuit; 25. Integrated chip; 26. Protrusion; 27. First boundary; 28. Second boundary; 29. ​​First center line; 30. Third boundary; 31. Fourth boundary; 32. Second center line; 33. First orthographic projection; 34. Second orthographic projection. Detailed Implementation

[0051] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses consistent with some aspects of this disclosure as detailed in the appended claims.

[0052] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used in this disclosure should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure and the claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. “A plurality” or “several” indicates two or more. Unless otherwise stated, the terms “front,” “rear,” “lower,” and / or “upper,” and similar terms are for ease of description only and are not limited to a location or spatial orientation. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising,” encompass the elements or objects listed following “comprising,” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0053] This disclosure provides a display panel. For example... Figure 1 and Figure 10 As shown, the display panel may include a substrate 1, a light-emitting unit 6, a coil 4, a voltage regulator circuit 13, a rectifier circuit 14, and a driving circuit 16, wherein:

[0054] The light-emitting unit 6 is disposed on the substrate 1. The light-emitting unit 6 may include a first electrode 601, a second electrode 603 disposed opposite to each other, and a light-emitting layer 602 located between the first electrode 601 and the second electrode 603. The coil 4 is disposed on the substrate 1, and the coil 4 is capable of generating current to power the light-emitting unit 6. The coil 4 is electrically connected to the first electrode 601 and / or the second electrode 603. The input terminal of the voltage regulator circuit 13 is electrically connected to the coil 4, the output terminal of the voltage regulator circuit 13 is electrically connected to the input terminal of the rectifier circuit 14, the output terminal of the rectifier circuit 14 is electrically connected to the input terminal of the drive circuit 16, and the output terminal of the drive circuit 16 is electrically connected to the light-emitting unit 6.

[0055] In this embodiment of the display panel, when an external electronic device equipped with a transmitting coil approaches the display panel, the coil 4 of this disclosure can generate a current for the light-emitting unit 6 through electromagnetic induction, thereby enabling the display panel to display without a power source, thus improving the usability of the display panel. This external electronic device can be a mobile phone, which may include NFC, etc.

[0056] The following is a detailed description of each part of the display panel according to the embodiments of this disclosure:

[0057] like Figure 1 As shown, the substrate 1 can be a rigid substrate. This rigid substrate can be a glass substrate or a PMMA (Polymethyl methacrylate) substrate, etc. Of course, the substrate 1 can also be a flexible substrate. This flexible substrate can be a PET (Polyethylene terephthalate) substrate, a PEN (Polyethylene naphthalate dimethyl methacrylate) substrate, or a PI (Polyimide) substrate.

[0058] like Figure 1 As shown, one of the first electrode 601 and the second electrode 603 is an anode, and the other is a cathode. For example, the first electrode 601 is the anode, and the second electrode 603 is the cathode. The light-emitting layer 602 can be an organic electroluminescent layer, a quantum dot light-emitting layer, a liquid crystal light-emitting layer, etc. For example, the light-emitting layer 602 is an organic electroluminescent layer. There can be multiple light-emitting units 6, and multiple light-emitting units 6 can share the second electrode 603, while each light-emitting unit 6 has its own first electrode 601. The colors of the light emitted by different light-emitting units 6 can be the same, or they can be different. For example, such as... Figure 7 and Figure 9 As shown, the plurality of light-emitting units 6 may include a second light-emitting unit 605, a third light-emitting unit 606, and a first light-emitting unit 607. The second light-emitting unit 605 can emit blue light, the third light-emitting unit 606 can emit green light, and the first light-emitting unit 607 can emit red light, but the present invention does not make any special limitation thereto. In addition, the plurality of light-emitting units 6 can form an anti-counterfeiting pattern.

[0059] like Figure 1 As shown, the coil 4 is disposed on the substrate 1 and can generate current through electromagnetic induction to power the light-emitting unit 6. Figure 2 and Figure 5As shown, in the thickness direction of the substrate 1, the coil 4 may include multiple layers stacked together, with an insulating material layer 8 between adjacent layers, and one layer may pass through the insulating material layer 8 to be connected in series with another layer. For example, the coil 4 may include two layers.

[0060] like Figures 1 to 3 As shown, the coil 4 is electrically connected to the first electrode 601 and the second electrode 603. Specifically, the display panel may further include a first planarization layer 5. The first planarization layer 5 may cover the coil 4, i.e., the coil 4 is located between the first planarization layer 5 and the substrate 1. The first planarization layer 5 may also have a first window and a second window exposing the coil 4. The first window and the second window are spaced apart. The light-emitting unit 6 may be disposed on the side of the first planarization layer 5 facing away from the substrate 1, with the first electrode 601 extending into the first window and electrically connected to the coil 4, and the second electrode 603 extending into the second window and electrically connected to the coil 4. The display panel of this embodiment may further include a pixel defining layer 7. The pixel defining layer 7 may be disposed on the side of the first planarization layer 5 facing away from the substrate 1, and has multiple openings, with multiple light-emitting units 6 correspondingly disposed in the multiple openings. For each light-emitting unit 6, the second electrode 603 is located on the side of the first electrode 601 facing away from the substrate 1. In the above embodiments, there can be multiple first windows, and the first electrodes 601 of the multiple light-emitting units 6 extend into the multiple first windows one by one to be electrically connected to the coil 4. For the display panel of this embodiment, when an external electronic device equipped with a transmitting coil approaches the display panel of this embodiment, the coil 4 in the display panel of this embodiment generates current through electromagnetic induction, thereby supplying power to the first electrode 205 and the second electrode 206 of the light-emitting unit 6, so that the multiple light-emitting units 6 display anti-counterfeiting patterns.

[0061] Of course, such as Figures 4 to 6As shown, the coil 4 can be electrically connected only to the first electrode 601. The display panel also includes a switching element disposed on the substrate 1. The coil 4 is electrically connected to the first electrode 601, and the switching element is connected in series between the coil 4 and the second electrode 603. The switching element can control the coil 4 to be turned on or off from the light-emitting unit 6. The switching element can be a transistor 2. The first electrode 205 of the transistor 2 can be electrically connected to the first electrode 601 through the coil 4, that is, the coil 4 is connected in series between the first electrode 205 of the transistor 2 and the first electrode 601 of the light-emitting unit 6, and the second electrode 206 of the transistor 2 can be electrically connected to the second electrode 603 of the light-emitting unit 6. Specifically, the display panel may also include a first planarization layer 5 and a second planarization layer 3. The second planarization layer 3 can be disposed on the side of the transistor 2 facing away from the substrate 1, and the coil 4 is disposed on the side of the second planarization layer 3 facing away from the substrate 1, and the coil 4 passes through the second planarization layer 3 to be electrically connected to the first electrode 205 of the transistor 2. The first planarization layer 5 can be disposed on the side of the coil 4 facing away from the substrate 1, and has a first window exposing the coil 4. The light-emitting unit 6 is disposed on the side of the first planarization layer 5 facing away from the substrate 1. The first electrode 601 extends into the first window and is electrically connected to the coil 4. The second electrode 603 may be located on the side of the first electrode 601 facing away from the substrate 1, or vice versa. The display panel of this embodiment may further include a pixel defining layer 7. The pixel defining layer 7 may be disposed on the side of the first planarization layer 5 facing away from the substrate 1 and has multiple openings, with multiple light-emitting units 6 correspondingly disposed in the multiple openings. For each light-emitting unit 6, taking the second electrode 603 located on the side of the first electrode 601 facing away from the substrate 1 as an example, the number of first windows in the above embodiment may be multiple, and the first electrodes 601 of the multiple light-emitting units 6 may extend into the multiple first windows to be electrically connected to the coil 4. The number of the above-mentioned switching elements may also be multiple, and the multiple switching elements correspond one-to-one with the multiple light-emitting units 6.

[0062] like Figure 4As shown, the transistor 2 described above can be a thin-film transistor (TFT). This TFT may include an active layer 201, a gate insulating layer 202, a gate layer 203, an interlayer insulating layer 204, a source, and a drain. One of the source and drain of the TFT is the first electrode 205 of the transistor 2, and the other is the second electrode 206. The active layer 201 may be disposed on the substrate 1, and the gate insulating layer 202 may be disposed on the substrate 1 and cover the active layer 201. The gate layer 203 may be disposed on the side of the gate insulating layer 202 away from the substrate 1. The interlayer insulating layer 204 may be disposed on the gate insulating layer 202 and cover the gate layer 203. The first electrode 601 and the second electrode 603 may be disposed on the interlayer insulating layer 204. The second planarization layer 3 described above may cover the first electrode 601 and the second electrode 603. Furthermore, the display panel may also include an encapsulation layer. This encapsulation layer may cover the second electrode 603. The encapsulation layer may include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer. The first inorganic encapsulation layer and the second inorganic encapsulation layer are disposed opposite to each other, and the organic encapsulation layer covers the space between the first inorganic encapsulation layer and the second inorganic encapsulation layer.

[0063] like Figure 7 and Figure 9 As shown, the aforementioned plurality of light-emitting units 6 can form one or more light-emitting areas 23. In one embodiment of this disclosure, the light-emitting area 23 can be in the form of a strip structure, and one or more protrusions 26 are provided on the edge of the light-emitting area 23 in the width direction (see...). Figure 9 The protrusion 26 is relatively small, and its size can be used to determine authenticity. For example, if there are multiple light-emitting areas 23 and they have a strip-like structure, such as... Figure 7 As shown, at least two of the plurality of light-emitting areas 23 have different widths. For example, two adjacent light-emitting areas 23 have different widths. With this configuration, for a display panel containing a switching element, the switching element controls one of the two light-emitting areas 23 with different widths to emit light, while the other light-emitting area 23 does not emit light. The authenticity is then determined based on the emitted image of the display panel. In another embodiment of this disclosure, at least two of the plurality of light-emitting areas 23 have different shapes or emitted colors. With this configuration, for a display panel containing a switching element, the switching element controls one of the two light-emitting areas 23 with different shapes to emit light, while the other light-emitting area 23 does not emit light. The authenticity is then determined based on its shape; similarly, the switching element controls both light-emitting areas 23 with different colors to emit light, and the authenticity is then determined based on their color. In other embodiments of this disclosure, the light-emitting area 23 can display images with color deviations, specifically, such as... Figure 9As shown, taking the third light-emitting unit 606 emitting green light as an example, when the light-emitting area 23 emits light, the lower edge of the light-emitting area 23 will appear greenish. In other embodiments of this disclosure, the coil 4 and the light-emitting unit 6 are located on opposite sides of the substrate 1, and the coil 4 is electrically connected to the light-emitting unit 6 via a circuit board. This circuit board can be a flexible circuit board.

[0064] In addition, such as Figure 7 and Figure 8 As shown, the first light-emitting unit 607 has a first orthographic projection 33 on the substrate 1, and the second light-emitting unit 605 has a second orthographic projection 34 on the substrate 1. The first orthographic projection 33 may have a first boundary 27 and a second boundary 28 disposed opposite to each other, and a first center line 29 located between the first boundary 27 and the second boundary 28. The distance between the first boundary 27 and the first center line 29 may be the same as the distance between the second boundary 28 and the first center line 29. Further, the first orthographic projection 33 may be an axisymmetric figure, with the first center line 29 as the axis of symmetry. The second orthographic projection 34 may have a third boundary 30 and a fourth boundary 31 disposed opposite to each other, and a second center line 32 located between the third boundary 30 and the fourth boundary 31. The distance between the third boundary 30 and the second center line 32 may be the same as the distance between the fourth boundary 31 and the second center line 32. Further, the second orthographic projection 34 may be an axisymmetric figure, with the second center line 32 as the axis of symmetry.

[0065] The first boundary 27, second boundary 28, first center line 29, third boundary 30, fourth boundary 31, and second center line 32 can extend in the same direction. In the direction perpendicular to the first center line 29, the first boundary 27 and third boundary 30 can be located on the same side of the second center line 32, and the second boundary 28 and fourth boundary 31 can be located on the same side of the second center line 32. The first boundary 27 can be located between the second center line 32 and the third boundary 30. Further, the first center line 29 can be located between the second center line 32 and the fourth boundary 31. Additionally, the fourth boundary 31 can be located between the second boundary 28 and the first center line 29. It can be seen that in the direction perpendicular to the first center line 29, the second boundary 28, fourth boundary 31, first center line 29, second center line 32, first boundary 27, and third boundary 30 are sequentially spaced apart. Taking one or more light-emitting areas 23 formed by multiple light-emitting units 6 and the light-emitting area 23 having a strip-shaped structure as an example, the light-emitting area 23 contains the aforementioned first light-emitting unit 607 and second light-emitting unit 605. The extension direction of the aforementioned first center line 29 is the same as the extension direction of the light-emitting area 23. The first light-emitting unit 607 and the second light-emitting unit 605 are located in the edge region of the light-emitting area 23. Since the second boundary 28, the fourth boundary 31, the first center line 29, the second center line 32, the first boundary 27, and the third boundary 30 are arranged alternately, the edge of the light-emitting area 23 in the light-emitting state produces a grainy texture under a microscope for anti-counterfeiting purposes.

[0066] like Figures 10 to 12 As shown, the input terminal of the voltage regulator circuit 13 is electrically connected to the coil 4, the output terminal of the voltage regulator circuit 13 is electrically connected to the input terminal of the rectifier circuit 14, the output terminal of the rectifier circuit 14 is electrically connected to the input terminal of the drive circuit 16, and the output terminal of the drive circuit 16 is electrically connected to the light-emitting unit 6. The inductance of the coil 4 is set to 5μH or higher, and more specifically, the inductance of the coil 4 is set to 10μH or higher.

[0067] like Figure 10As shown, the coil 4 and the light-emitting unit 6 can be located on opposite sides of the substrate 1. The voltage regulator circuit 13, rectifier circuit 14, and drive circuit 16 can be located on the same side of the substrate 1 as the coil 4. The drive circuit 16 is electrically connected to the light-emitting unit 6 via a flexible circuit board 17. Furthermore, the substrate 1 can have a circuit lead area 18, which can have a circuit interface. The light-emitting unit 6 is electrically connected to the circuit interface, and the drive circuit 16 is electrically connected to the circuit interface via the flexible circuit board 17. Further, the display panel can also include a substrate 10. The substrate 10 can be located on the side of the substrate 1 facing away from the light-emitting unit 6; for example, the substrate 10 is bonded to the back side of the substrate 1 via a first adhesive layer 9. The voltage regulator circuit 13, rectifier circuit 14, drive circuit 16, and coil 4 can be located on the surface of the substrate 10 facing away from the substrate 1. The substrate 10 can be a polymer film, a rigid polymer board, a rigid PVC board, a PMMA board, etc. The material of the first adhesive layer 9 can be acrylate or the like.

[0068] In addition, such as Figure 10 and Figure 12 As shown, the display panel may further include a MUX circuit 15 and a communication circuit 24. The output terminal of the rectifier circuit 14 can be electrically connected to the input terminal of the drive circuit 16 through the MUX circuit 15, so that the voltage input to the drive circuit 16 is within a preset voltage range. This preset voltage range can be 10V-20V, but this disclosure is not limited to this. The input terminal of the communication circuit 24 can be electrically connected to the output terminal of the voltage regulator circuit 13. When an external electronic device equipped with a transmitting coil approaches the display panel of this embodiment, the coil 4 generates current and transmits it to the voltage regulator circuit 13. The communication circuit 24 can communicate with the external electronic device in response to the output signal of the voltage regulator circuit 13. The communication circuit 24 can satisfy communication within a specific frequency range to meet relevant wireless transmission protocols and is compatible with the NFC encryption protocol, enabling queries for specific users. This specific frequency range can include 100kHz-200kHz. Of course, this specific frequency range can also include a frequency value of 13.56MHz. The communication circuit 24 can be integrated with the rectifier circuit 14 onto a single integrated chip 25, but this disclosure does not impose any special limitations on this. Furthermore, the output of the communication circuit 24 can also be electrically connected to the input of the MUX circuit 15. The communication circuit 24 can receive signals sent by external electronic devices and transmit them to the drive circuit 16 via the MUX circuit 15. The MUX circuit 15 can modulate, convert, and amplify the signal output from the communication circuit 24. The MUX circuit 15 and the communication circuit 24 can also be located on the surface of the substrate 10 facing away from the substrate 1. Additionally, a frequency modulation capacitor can be connected in series between the coil 4 and the voltage regulator circuit 13.

[0069] In other embodiments of this disclosure, such as Figure 11 and Figure 12 As shown, the coil 4 and the light-emitting unit 6 can be located on the same side of the substrate 1. The driving circuit 16 can be bonded to the circuit lead area 18. The voltage regulator circuit 13, the MUX circuit 15, and the integrated chip 25 including the communication circuit 24 and the rectifier circuit 14 can all be disposed on the flexible circuit board 17. Furthermore, when the coil 4 and the light-emitting unit 6 can be located on the same side of the substrate 1, the display panel of this disclosure may not require a substrate 10.

[0070] This disclosure also provides a display device. The display device may include the display panel described in any of the above embodiments. The display device may be a smart card, mobile phone, tablet computer, television, etc. Since the display panel in the display device of this disclosure is the same as the display panel in the above-described embodiments, it has the same beneficial effects, and will not be described again here.

[0071] like Figure 13 As shown, taking a display device including a display panel with a voltage regulator circuit 13, a rectifier circuit 14, and a drive circuit 16 as an example, the display device may also include a housing 21. The housing 21 may have an open end, and the display panel may be disposed inside the housing 21, with the light-emitting side of the display panel facing the open end. Specifically, the housing 21 includes a bottom wall and side walls. A buffer pad 11 is provided on the surface of the display panel facing the bottom wall of the housing 21, and the buffer pad 11 is bonded to the bottom wall of the housing 21 by a second adhesive layer 12. The buffer pad 11 may be a buffer foam or a silicone pad. The display panel may also include a cover plate 20, which is connected to the side of the light-emitting unit 6 facing away from the substrate 1 by a third adhesive layer 22. The cover plate 20 is connected to the side wall of the housing 21 by a frame adhesive 19.

[0072] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure in any way. Although this disclosure has been disclosed above with reference to a preferred embodiment, it is not intended to limit this disclosure. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this disclosure. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this disclosure without departing from the content of the technical solution of this disclosure shall still fall within the scope of the technical solution of this disclosure.

Claims

1. A display panel, characterized in that, include: Substrate; A light-emitting unit is disposed on the substrate and includes a first electrode, a second electrode, and a light-emitting layer. The first electrode and the second electrode are disposed opposite to each other, and the light-emitting layer is located between the first electrode and the second electrode. A coil is disposed on the substrate, the coil is capable of generating a current to power the light-emitting unit, and the coil is electrically connected to the first electrode and / or the second electrode; The system includes a voltage regulator circuit, a rectifier circuit, and a driver circuit. The input terminal of the voltage regulator circuit is electrically connected to the coil, the output terminal of the voltage regulator circuit is electrically connected to the input terminal of the rectifier circuit, the output terminal of the rectifier circuit is electrically connected to the input terminal of the driver circuit, and the output terminal of the driver circuit is electrically connected to the light-emitting unit. The number of light-emitting units is multiple, including a first light-emitting unit and a second light-emitting unit. The first light-emitting unit has a first orthographic projection on the substrate, and the second light-emitting unit has a second orthographic projection on the substrate. The first orthographic projection has a first boundary and a second boundary disposed opposite to each other, and a first center line located between the first boundary and the second boundary. The second orthographic projection has a third boundary and a fourth boundary disposed opposite to each other, and a second center line located between the third boundary and the fourth boundary. The first boundary, the second boundary, the first center line, the third boundary, the fourth boundary, and the second center line extend in the same direction. The first boundary and the third boundary are located on the same side of the second center line, and the second boundary and the fourth boundary are located on the same side of the second center line. The first boundary is located between the second center line and the third boundary.

2. The display panel according to claim 1, characterized in that, The coil is electrically connected to the first electrode and the second electrode, and the display panel further includes: A first planarization layer covers the coil and has a first window and a second window that expose the coil; The light-emitting unit is disposed on the side of the first planarization layer facing away from the substrate, the first electrode extends into the first window and is electrically connected to the coil, and the second electrode extends into the second window and is electrically connected to the coil.

3. The display panel according to claim 1, characterized in that, The display panel further includes a switching element disposed on the substrate; the coil is electrically connected to the first electrode, and the switching element is connected in series between the coil and the second electrode.

4. The display panel according to claim 3, characterized in that, The switching element includes a transistor, the first terminal of which is electrically connected to the first electrode via the coil, and the second terminal of which is electrically connected to the second electrode.

5. The display panel according to claim 4, characterized in that, The display panel also includes: A second planarization layer is disposed on the side of the transistor facing away from the substrate, and the coil is disposed on the side of the second planarization layer facing away from the substrate and passes through the second planarization layer to be electrically connected to the first electrode of the transistor. A first planarization layer is disposed on the side of the coil facing away from the substrate, and has a first window exposing the coil; The light-emitting unit is located on the side of the first planarization layer facing away from the substrate, and the first electrode extends into the first window and is electrically connected to the coil.

6. The display panel according to claim 5, characterized in that, The second electrode is located on the side of the first electrode facing away from the substrate, or the first electrode is located on the side of the second electrode facing away from the substrate.

7. The display panel according to claim 2 or 5, characterized in that, The number of light-emitting units is multiple, and the multiple light-emitting units share a second electrode. The display panel also includes: A pixel defining layer is disposed on the side of the first planarization layer facing away from the substrate, and has multiple openings. Multiple light-emitting units are disposed in the multiple openings in a corresponding manner, and the second electrode is located on the side of the first electrode facing away from the substrate. The number of first windows is multiple, and the first electrodes of the multiple light-emitting units extend into the multiple first windows in a one-to-one correspondence to be electrically connected to the coil.

8. The display panel according to claim 1, characterized in that, In the thickness direction of the substrate, the coil comprises multiple stacked coils, with adjacent coils connected in series.

9. The display panel according to claim 1, characterized in that, The number of light-emitting units is multiple, and the multiple light-emitting units form an anti-counterfeiting pattern.

10. The display panel according to claim 1, characterized in that, The number of light-emitting units is multiple, and the multiple light-emitting units form multiple light-emitting areas. The light-emitting areas have a strip-shaped structure, and at least two of the multiple light-emitting areas have different widths.

11. The display panel according to claim 10, characterized in that, The first centerline is located between the second centerline and the fourth boundary.

12. The display panel according to claim 11, characterized in that, The fourth boundary is located between the second boundary and the first centerline.

13. The display panel according to claim 1, characterized in that, The number of light-emitting units is multiple, and the multiple light-emitting units form one or more light-emitting areas. The light-emitting areas have a strip-shaped structure, and one or more protrusions are provided on the edge of the light-emitting area in the width direction.

14. The display panel according to claim 1, characterized in that, The number of light-emitting units is multiple, and the multiple light-emitting units form one or more light-emitting areas, which can display images with color deviation.

15. The display panel according to claim 1, characterized in that, The coil and the light-emitting unit are located on opposite sides of the substrate. The voltage regulator circuit, the rectifier circuit, and the driving circuit are located on the same side of the substrate as the coil. The driving circuit is electrically connected to the light-emitting unit through a flexible circuit board.

16. The display panel according to claim 15, characterized in that, The display panel also includes: A substrate is disposed on the side of the substrate facing away from the light-emitting unit. The voltage regulator circuit, the rectifier circuit, the driving circuit, and the coil are disposed on the surface of the substrate facing away from the substrate. One end of the flexible circuit board is electrically connected to the driving circuit, and the other end is electrically connected to the light-emitting unit.

17. The display panel according to claim 1, characterized in that, The coil and the light-emitting unit are located on opposite sides of the substrate, and the coil is electrically connected to the light-emitting unit via a flexible circuit board.

18. A display device, characterized in that, Includes the display panel as described in any one of claims 1-17.

19. The display device according to claim 18, characterized in that, The display device further includes: The housing has an open end, and the display panel is disposed inside the housing, with the light-emitting side of the display panel facing the open end.

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