Display panel and display device

Abstract

The embodiment of the present invention discloses a display panel and a display device. The display panel includes a driving module, at least one humidity sensor group and a plurality of light-emitting units, the humidity sensor group includes at least one humidity sensor, and the driving module is electrically connected to the humidity sensor group and the light-emitting unit respectively; the humidity sensor is used to detect the humidity information inside the display panel and feed back the humidity information to the driving module, and the driving module is used to adjust the driving current of the light-emitting unit according to the humidity information. In the embodiment of the present invention, the driving module can adjust the driving current of the light-emitting element based on the humidity information detected by the humidity sensor, thereby reducing the probability of electrochemical corrosion of the light-emitting unit inside the display panel, improving the reliability of the display panel, and extending the service life of the display panel.

Description

Technical Field

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

[0002] During the application of the display panel, the humidity inside the display panel may change. The display panel includes a large number of precision components and film layer structures. When the humidity inside the display panel is high, it will affect the reliability of the internal components and film layer structures of the display panel. In severe cases, it may affect the normal application of the display panel. Summary of the invention

[0003] In view of this, the present invention provides a display panel and a display device to detect the humidity inside the display panel, so as to prevent the humidity change from affecting the reliability of the display panel and to increase the service life of the display panel and the display device.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, including a driving module, at least one humidity sensor group and a plurality of light-emitting units, wherein the humidity sensor group includes at least one humidity sensor, and the driving module is electrically connected to the humidity sensor group and the light-emitting unit respectively;

[0005] The humidity sensor is used to detect humidity information inside the display panel and feed back the humidity information to the driving module, and the driving module is used to adjust the driving current of the light-emitting unit according to the humidity information.

[0006] In a second aspect, an embodiment of the present invention further provides a display device, comprising the display panel described in the first aspect of the present invention.

[0007] In an embodiment of the present invention, the display panel includes a driving module, at least one humidity sensor group and a plurality of light-emitting units, the humidity sensor group includes at least one humidity sensor, the driving module is electrically connected to the humidity sensor group and the light-emitting unit respectively; the humidity sensor is used to detect humidity information inside the display panel and feed back the humidity information to the driving module, and the driving module is used to adjust the driving current of the light-emitting unit according to the humidity information. Through the above technical solution, the driving module can adjust the driving current of the light-emitting element based on the humidity information detected by the humidity sensor, thereby reducing the probability of electrochemical corrosion of the light-emitting unit inside the display panel, improving the reliability of the display panel, and extending the service life of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A schematic diagram of a display panel structure provided by an embodiment of the present invention;

[0009] Figure 2 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0010] Figure 3 A schematic diagram of the structure of a pixel circuit provided by an embodiment of the present invention;

[0011] Figure 4 A resistance value-humidity change curve diagram of a humidity sensor provided by an embodiment of the present invention;

[0012] Figure 5 for Figure 1 A schematic diagram of the enlarged structure at A;

[0013] Figure 6 for Figure 1 Schematic diagram of the cross-sectional structure along the C-C' direction;

[0014] Figure 7 A schematic diagram of a partial cross-sectional structure of a display panel provided by an embodiment of the present invention;

[0015] Figure 8 for Figure 1 A schematic diagram of the enlarged structure at D;

[0016] Fig. 9 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0017] Fig.10 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention;

[0018] Fig.11 A schematic diagram of the structure of a humidity sensor group provided by an embodiment of the present invention;

[0019] Fig.12 for Fig.11 Schematic diagram of the cross-sectional structure along the E-E' section line;

[0020] Fig.13 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0022] In order to prevent the high humidity inside the display panel from affecting the display panel, the inventor proposed the technical solution in this application. Figure 1 A schematic diagram of a display panel structure provided by an embodiment of the present invention, referring to Figure 1The display panel includes a driving module 1, at least one humidity sensor group 2 and a plurality of light-emitting units 3, the humidity sensor group 2 includes at least one humidity sensor 4, the driving module 1 is electrically connected to the humidity sensor group 2 and the light-emitting unit 3 respectively; the humidity sensor 4 is used to detect the humidity information inside the display panel and feed back the humidity information to the driving module 1, and the driving module 1 is used to adjust the driving current of the light-emitting unit 3 according to the humidity information.

[0023] Specifically, refer to Figure 1 In an embodiment of the present invention, the display panel includes: a driving module 1, at least one humidity sensor group 2 and a plurality of light-emitting units 3. The driving module 1 is respectively connected to each humidity sensor group 2 and each light-emitting unit 3. Each humidity sensor group 2 includes at least one humidity sensor 4, which can detect humidity information inside the display panel. The humidity sensor 4 is connected to the driving module 1, and the humidity sensor 4 feeds back the detected humidity information to the driving module 1, and the driving module 1 can adjust the driving current of the light-emitting unit 3 according to the humidity information.

[0024] It is understandable that when there is water vapor inside the display panel, the humidity inside the display panel will increase. In an environment with high humidity, the metal electrodes and metal wiring inside the display panel are likely to be corroded. And according to the principle of electrochemical corrosion, the corrosion current is related to the corrosion rate. The larger the corrosion current, the greater the corrosion rate. Therefore, when the humidity inside the display panel is high, if the driving module 1 still drives the light-emitting unit 3 to emit light with a large driving current, the possibility of the light-emitting unit 3 being corroded will also increase.

[0025] Therefore, in the embodiment of the present invention, a humidity sensor group 2 can be set inside the display panel, and the humidity sensor 4 in the humidity sensor group 2 monitors the humidity change inside the display panel in real time, and then the driving module 1 adjusts the driving current of the light-emitting unit 3 according to the humidity change. When it is detected that the humidity inside the display panel is small and close to zero, the driving current can be maintained unchanged; when it is detected that the humidity inside the display panel is large, the driving current can be appropriately reduced to reduce the probability of electrochemical corrosion of the light-emitting unit 3 inside the display panel, thereby improving the reliability of the display panel.

[0026] In an embodiment of the present invention, the display panel includes a driving module, at least one humidity sensor group and a plurality of light-emitting units, the humidity sensor group includes at least one humidity sensor, the driving module is electrically connected to the humidity sensor group and the light-emitting unit respectively; the humidity sensor is used to detect humidity information inside the display panel and feed back the humidity information to the driving module, and the driving module is used to adjust the driving current of the light-emitting unit according to the humidity information. Through the above technical solution, the driving module can adjust the driving current of the light-emitting element based on the humidity information detected by the humidity sensor, thereby reducing the probability of electrochemical corrosion of the light-emitting unit inside the display panel, improving the reliability of the display panel, and extending the service life of the display panel.

[0027] Optionally, the embodiment of the present invention does not limit the specific manner in which the driving module adjusts the driving current of the light-emitting unit, and those skilled in the art may configure it according to actual needs.

[0028] For example, Figure 2 A schematic diagram of another display panel provided by an embodiment of the present invention, referring to Figure 2 In a possible embodiment, the driving module 1 includes a control unit 5, a driving chip 6 and a flexible circuit board 7; the display panel also includes a data signal line 8 and a power signal line 9, the data signal line 8 is electrically connected to the driving chip 6 and the light-emitting unit 3 respectively, and the power signal line 9 is electrically connected to the flexible circuit board 7 and the light-emitting unit 3 respectively; the control unit 5 is electrically connected to the humidity sensor group 2, the driving chip 6 and the flexible circuit board 7 respectively, and the control unit 5 is used to output humidity information to the driving chip 6 and the flexible circuit board 7 respectively; the driving chip 6 is used to adjust the data signal transmitted in the data signal line 8 according to the humidity information; the flexible circuit board 7 is used to adjust the power signal transmitted in the power signal line 9 according to the humidity information.

[0029] Specifically, Figure 2 As shown in , in this embodiment, the driving module 1 can be divided into a control unit 5, a driving chip 6 and a flexible circuit board 7. The display panel is also provided with a plurality of data signal lines 8 and a plurality of power signal lines 9. The data signal lines 8 are electrically connected to the driving chip 6 and the light-emitting unit 3, respectively. The driving chip 6 transmits the data signal data to the light-emitting unit 3 through the data signal lines 8; the power signal lines 9 are electrically connected to the flexible circuit board 7 and the light-emitting unit 3, respectively. The flexible circuit board 7 transmits the power signal PVDD to the light-emitting unit 3 through the power signal lines 9. For the convenience of distinction, Figure 2 In the figure, the thicker black solid line represents the power signal line 9, and the thinner black solid line represents the data signal line 8, which does not represent the actual shape structure of the data signal line 8 and the power signal line 9.

[0030] Further, continue to refer to Figure 2, the control unit 5 is electrically connected to each humidity sensor group 2, the driving chip 6 and the flexible circuit board 7 respectively. The control unit 5 can receive the humidity information detected by the humidity sensor 4 in the humidity sensor group 2, and then send the humidity information to the driving chip 6 and the flexible circuit board 7 respectively. The driving chip 6 can adjust the data signal data transmitted to the light-emitting unit 3 according to the received humidity information; the flexible circuit board 7 can adjust the power signal PVDD transmitted to the light-emitting unit 3 according to the received humidity information.

[0031] Figure 3 A schematic diagram of a pixel circuit according to an embodiment of the present invention is provided. Figure 3 The exemplary pixel circuit is a 7T1C pixel driving circuit, but the actual situation is not limited thereto. According to the driving principle of the 7T1C driving circuit, the current of the driving transistor M3 drives the light-emitting element to emit light, and the current of the driving transistor M3 is the driving current of the light-emitting unit. The current of the driving transistor M3 satisfies the following formula:

[0032]

[0033] Wherein, μ is the carrier mobility of the driving transistor M3, W and L are the width and length of the channels of the first light-emitting control transistor M1 and the second light-emitting control transistor M6, and C ox is the gate oxide capacitance per unit area of ​​the driving transistor M3. PVDD is the voltage value of the power signal PVDD transmitted by the power signal line, V data is the voltage value of the data signal data transmitted by the data signal line.

[0034] Referring to the above formula, it can be known that the magnitude of the driving current used to drive the light-emitting unit 3 to emit light is related to the power signal PVDD and the data signal data. When the voltage value of the data signal data is constant, the greater the voltage value of the power signal PVDD, the greater the driving current; when the voltage value of the power signal PVDD is constant, the greater the voltage value of the data signal data, the smaller the driving current.

[0035] Thus, the driver chip 6 can adjust the size of the data signal data according to the humidity information detected by the humidity sensor 4, and / or the flexible circuit board 7 can adjust the size of the power signal PVDD according to the humidity information detected by the humidity sensor 4. Specifically, when the humidity in the display panel is small and close to zero, the driver chip 6 and / or the flexible circuit board 7 can maintain the current output signal value unchanged to ensure the light-emitting effect of the light-emitting unit 3; when the humidity in the display panel is large, the driver chip 6 can appropriately increase the voltage value of the output data signal data, and / or the flexible circuit board 7 can appropriately reduce the voltage value of the output power signal PVDD, thereby reducing the driving current of the light-emitting unit 3.

[0036] In the above manner, the driving chip 6 and the flexible circuit board 7 can automatically adjust the voltage value of the output signal according to the received humidity information, ensuring that when the humidity inside the display panel changes, the control module can adjust the driving current in time.

[0037] Optionally, the embodiment of the present invention does not limit the configuration of the control unit 5, and those skilled in the art may adjust it according to actual needs. For example, the control unit 5 and the driver chip 6 may be configured independently; or, the control unit 5 and the driver chip 6 may be configured integrally.

[0038] Specifically, in an embodiment not shown in the drawings, the control unit 5 and the driver chip 6 can be integrated, that is, the control unit 5 can be integrated on the same chip or circuit board as the driver chip 6. The integrated setting can reduce the setting area of ​​the control unit 5 and will not increase the frame area of ​​the display panel.

[0039] exist Figure 1 and Figure 2 In the illustrated embodiment, the control unit 5 and the driver chip 6 may be two independent units, that is, the control unit 5 and the driver chip 6 are independently arranged. The advantage of the independent arrangement is that the signals transmitted by the control unit 5 and the driver chip 6 will not interfere with each other, which is beneficial to the stability of the display panel signal transmission. When independently arranged, the control unit 5 may be a circuit board with data calculation and processing functions, etc., but is not limited thereto.

[0040] Optionally, the embodiment of the present invention does not limit the specific implementation method of the above-mentioned humidity sensor 4 to detect humidity information. Those skilled in the art can set it according to actual needs. Any method of using the humidity sensor 4 to detect humidity information is within the scope of the technical solution protected by the embodiment of the present invention.

[0041] Exemplarily, in a possible embodiment, the humidity information may include resistance information; the resistance information includes a first resistance threshold R1 and a second resistance threshold R2, the change in driving current corresponding to the first resistance threshold R1 is a first change, and the change in driving current corresponding to the second resistance threshold R2 is a second change; wherein, the first resistance threshold R1 is greater than the second resistance threshold R2, and the first change is less than the second change.

[0042] Specifically, in the embodiment of the present invention, the humidity information detected by the humidity sensor 4 may include resistance information, which can also be understood as the humidity sensor 4 in the present embodiment can generate resistance information corresponding to the humidity condition, i.e., resistance value, when the ambient humidity changes, and the ambient humidity condition is reflected by the resistance value. At this time, the driving module 1 can adjust the driving current of the light-emitting unit 3 according to the resistance information. Under this setting mode, the humidity inside the display panel can be reflected by relatively intuitive resistance information, which is conducive to reducing the difficulty of the driving unit in processing the humidity information and improving the efficiency and accuracy of the driving unit in adjusting the driving current according to the humidity information.

[0043] Further, when the humidity information includes resistance information, the resistance information can be set to include a first resistance threshold R1 and a second resistance threshold R2. The first resistance threshold R1 and the second resistance threshold R2 can also be understood as different resistance values ​​corresponding to different ambient humidity sensed by the humidity sensor 4, wherein the first resistance threshold R1 is greater than the second resistance threshold R2.

[0044] Further, the change amount of the driving current corresponding to the first resistance threshold R1 is the first change amount, and the change amount of the driving current corresponding to the second resistance threshold R2 is the second change amount. That is, when the resistance information detected by the humidity sensor 4 is the first resistance threshold R1, the driving module 1 can adjust the driving current of the light-emitting element by the first change amount; when the resistance information detected by the humidity sensor 4 is the second resistance threshold R2, the driving module 1 can adjust the driving current of the light-emitting element by the second change amount. Among them, the first change amount is smaller than the second change amount, that is, under the first resistance threshold R1, the change amount of the driving current is smaller, and under the second resistance threshold R2, the change amount of the driving current is larger.

[0045] Figure 4 A resistance value-humidity change curve diagram of a humidity sensor provided by an embodiment of the present invention, referring to Figure 4 In the embodiment of the present invention, when the humidity sensed by the humidity sensor 4 increases, the resistance value of the humidity sensor 4 decreases. Since the first resistance threshold R1 is greater than the second resistance threshold R2, the humidity corresponding to the first resistance threshold R1 detected by the humidity sensor 4 should be less than the humidity corresponding to the second resistance threshold R2. Therefore, the embodiment of the present invention sets the first change corresponding to the first resistance threshold R1 to be less than the second change corresponding to the second resistance threshold R2, so that the driving module 1 can adjust the driving current with a larger change when the humidity is high, and adjust the driving current with a smaller change when the humidity is low. The adjustment amplitude of the driving current matches the actual environmental humidity information, while reducing the risk of corrosion, avoiding excessive adjustment amplitude of the driving current to affect the display effect of the display panel.

[0046] Of course, in actual application, those skilled in the art may also set multiple resistance thresholds and the changes in the driving current corresponding to the multiple resistance thresholds according to actual needs, and the embodiments of the present invention do not limit this.

[0047] Exemplarily, in another possible embodiment, the humidity information includes resistance information; the resistance information includes a first resistance threshold R1 and a second resistance threshold R2, the data signal data corresponding to the first resistance threshold R1 is the first data signal data1, and the power signal PVDD is the first power signal PVDD1; the data signal data corresponding to the second resistance threshold R2 is the second data signal data2, and the power signal PVDD is the second power signal PVDD2; wherein, the first resistance threshold R1 is greater than the second resistance threshold R2, the first data signal data1 is less than the second data signal data2, and the first power signal PVDD1 is greater than the second power signal PVDD2.

[0048] This embodiment is the same as the above embodiment, the humidity information may still include resistance information, the resistance information may still include the first resistance threshold R1 and the second resistance threshold R2, and the first resistance threshold R1 is still greater than the second resistance threshold R2. The understanding of the first resistance threshold R1 and the second resistance threshold R2 can refer to the above embodiment, and will not be repeated here.

[0049] Different from the above embodiment, in this embodiment, the driving current of the light emitting unit 3 can be adjusted by adjusting the magnitude of the data signal data and the power signal PVDD, that is, the magnitudes of the data signal data and the power signal PVDD are different under different resistance values ​​of the humidity sensor 4. The transmission method of the data signal data and the power signal PVDD is the same as that in the above embodiment, and will not be repeated here.

[0050] Specifically, the data signal data corresponding to the first resistance threshold R1 is the first data signal data1, and the power signal PVDD is the first power signal PVDD1; the data signal data corresponding to the second resistance threshold R2 is the second data signal data2, and the power signal PVDD is the second power signal PVDD2. That is, when the resistance information detected by the humidity sensor 4 is the first resistance threshold R1, the data signal data transmitted by the driver chip 6 to the light-emitting unit 3 through the data signal line 8 is the first data signal data1, and the power signal PVDD transmitted by the flexible circuit board 7 to the light-emitting unit 3 through the power signal line 9 is the first power signal PVDD1; when the resistance information detected by the humidity sensor 4 is the second resistance threshold R2, the data signal data transmitted by the driver chip 6 to the light-emitting unit 3 through the data signal line 8 is the second data signal data2, and the power signal PVDD transmitted by the flexible circuit board 7 to the light-emitting unit 3 through the power signal line 9 is the second power signal PVDD2. Among them, the first data signal data1 is smaller than the second data signal data2, and the first power signal PVDD1 is larger than the second power signal PVDD2, that is, under the first resistance threshold R1, the data signal data emitted by the driver chip 6 is smaller, and the power signal PVDD emitted by the flexible circuit board 7 is larger; under the second resistance threshold R2, the data signal data emitted by the driver chip 6 is larger, and the power signal PVDD emitted by the flexible circuit board 7 is smaller.

[0051] According to the above embodiments, when the voltage value of the data signal data is constant, the greater the voltage value of the power signal PVDD is, the greater the driving current is. When the voltage value of the power signal PVDD is constant, the greater the voltage value of the data signal data is, the smaller the driving current is. Figure 4 , when the resistance information detected by the humidity sensor 4 is the first resistance threshold R1, the ambient humidity value is low; when the resistance information detected by the humidity sensor 4 is the second resistance threshold R2, the ambient humidity value is high. Therefore, the data signal data under the first resistance threshold R1 can be set to be the first data signal data1 with a smaller value, and the power signal PVDD can be set to be the first power signal PVDD1 with a larger value, and the data signal data under the second resistance threshold R2 can be set to be the second data signal data2 with a larger value, and the power signal PVDD can be set to be the second power signal PVDD2 with a smaller value, so that when the humidity sensor 4 detects the first resistance threshold R1, the driving current of the light-emitting unit 3 is greater than the driving current of the light-emitting unit 3 when the second resistance threshold R2 is detected. Ensure that the magnitude of the driving current flowing through the light-emitting unit 3 matches the actual ambient humidity value, and reduce the risk of electrochemical corrosion of the display panel under different humidity.

[0052] Optionally, the embodiment of the present invention does not limit the specific configuration of the humidity sensor 4 in the display panel, and those skilled in the art may configure it according to actual needs.

[0053] For example, Figure 5 for Figure 1 A schematic diagram of the enlarged structure at A. Figure 6 for Figure 1 Schematic diagram of the cross-sectional structure along the C-C' direction, refer to Figure 5 and Figure 6 In a possible embodiment, the humidity sensor 4 may include an electrode 10 and a humidity-sensitive film layer 11; along a first direction X and a second direction Y, the humidity-sensitive film layer 11 covers the electrode 10, and the electrode 10 is electrically connected to the driving module 1; the first direction X is a vertical light-emitting direction of the display panel, and the second direction Y is parallel to the plane where the substrate of the display panel (not shown in the figure) is located.

[0054] Specifically, Figure 5 and Figure 6 As shown in , a humidity sensor 4 may be provided including an electrode 10 and a humidity-sensitive film layer 11, and the humidity-sensitive film layer 11 is used to sense the humidity inside the display panel. Among them, along the vertical light-emitting direction of the display panel, i.e., the first direction X, and along the direction parallel to the plane where the substrate is located, i.e., the second direction Y, the humidity-sensitive film layer 11 covers the electrode 10. It can also be understood that the humidity-sensitive film layer 11 entirely covers the electrode 10. The humidity-sensitive film layer 11 is a film layer having conductive properties and capable of sensing changes in the surrounding humidity. For example, it may be a conductive polymer film layer, but is not limited thereto; the electrode 10 is a metal electrode that is not easily corroded. In this setting, when the humidity-sensitive film layer 11 senses a change in humidity, the resistance of the electrode 10 covered by the humidity-sensitive film layer 11 can respond and change, thereby obtaining resistance information, i.e., humidity information. Among them, the electrode 10 may be provided on any insulating film layer 12 inside the display panel.

[0055] At the same time, the electrode 10 is electrically connected to the driving module 1, and the driving module 1 obtains the resistance of the electrode 10 in real time to monitor the humidity of the display panel. It should be noted that in this embodiment, the same humidity sensor 4 includes at least two electrodes 10, which serve as the cathode and anode of the humidity sensor 4. The two electrodes 10 are respectively connected to the driving module 1 to form a loop. When the humidity sensed by the humidity sensing film layer 11 changes, the driving module 1 can sense the change in the resistance of the electrode 10 through the loop between it and the two electrodes 10.

[0056] It can be understood that the electrode 10 is formed on an insulating film layer 12 parallel to the display panel substrate, and the moisture-sensitive film layer 11 is a structure covering the exposed surface of the electrode 10. In this embodiment, the humidity sensor 4 is formed by using the electrode 10 and the moisture-sensitive film layer 11, and the preparation process is simple. The moisture-sensitive film layer 11 is arranged to cover the electrode 10 along the first direction X and the second direction Y, so that the electrode 10 can fully detect the change of the humidity of the moisture-sensitive film layer 11, thereby improving the accuracy of humidity information detection.

[0057] Among them, the setting position, number, height in the first direction X and length in the second direction Y of the electrode 10, the height in the first direction X and the length in the second direction Y of the moisture-sensitive film layer 11, etc. can be set by those skilled in the art according to actual needs. The embodiment of the present invention does not limit this. It is sufficient to ensure that the moisture-sensitive film layer 11 covers the electrode 10 along the first direction X and the second direction Y. The figure shows two electrodes 10 by way of example, and the two electrodes 10 are set in the same layer, but the actual setting method is not limited to this.

[0058] Optional, you can still refer to 1. Figure 5 and Figure 6 In a possible embodiment, the display panel may include multiple humidity sensor groups 2; the humidity sensors 4 in at least two humidity sensor groups 2, the humidity sensing film layers 11 have the same size in the first direction X and the second direction Y, and the electrodes 10 have the same size in the first direction X and the second direction Y.

[0059] Specifically, in this embodiment, multiple groups of humidity sensor groups 2 can be set in the display panel. When multiple groups of humidity sensor groups 2 are set, the humidity sensors 4 of the humidity sensor groups 2 cover a larger area, thereby detecting the humidity information of more areas inside the display panel, ensuring that when water vapor appears somewhere on the display panel and causes the humidity to increase, the driving module 1 can obtain the humidity information in time.

[0060] Furthermore, it is worth pointing out that, in the present embodiment, the humidity sensors 4 in at least two humidity sensor groups 2 may be provided with the humidity sensing film layer 11 and the electrode 10 having the same size in the first direction X and the second direction Y. The same size in the first direction X and the second direction Y may also be understood as the same area of ​​the vertical projection on the plane perpendicular to the substrate and the same area of ​​the vertical projection on the plane where the substrate is located. In other words, in the present embodiment, the humidity sensors 4 in at least two different humidity sensor groups 2 may be provided with the humidity sensing film layer 11 having the same vertical projection area on the plane perpendicular to the substrate and the plane where the substrate is located; at the same time, the humidity sensors 4 in different humidity sensor groups 2 may have the same vertical projection area on the plane perpendicular to the substrate and the plane where the substrate is located. For example Figure 1 The structural diagrams of the humidity sensors 4 at different areas of the display panel are shown in FIG. Figure 5 and Figure 6 as shown in .

[0061] The advantage of such a setting is that the humidity sensing film layer 11 of the humidity sensors 4 in different humidity sensor groups 2 has the same sensitivity in the same humidity environment, that is, it can sense the same humidity. When the humidity sensed by the humidity sensing film layer 11 is the same, the change sensitivity of the resistance of the electrode 10 is also the same, that is, when the humidity is the same, the humidity information (resistance information in this embodiment) detected by the humidity sensors 4 in different groups is the same, thereby ensuring that the adjustment range of the driving current of different light-emitting units 3 in the same humidity environment by the driving module 1 is consistent. It prevents the situation that the humidity sensor 4 senses the same resistance information for different humidity, or senses different resistance information for the same humidity, thereby avoiding the mismatch between the adjustment of the driving current and the humidity situation, resulting in the driving current adjustment range being too large to affect the normal display or the driving current adjustment range being too small to effectively prevent moisture from corroding the display panel.

[0062] Optionally, the above embodiment only exemplarily shows the arrangement of the electrode 10 and the humidity sensitive film layer 11 of the humidity sensor 4 inside the display panel. In actual application, technicians in this field can adjust the arrangement of the electrode 10 and the humidity sensitive film layer 11 according to actual needs.

[0063] Exemplarily, still referring to Figure 5, in this embodiment, the electrode 10 may include at least two electrode sections 100 whose extending directions intersect with each other.

[0064] Specifically, Figure 5 As shown in FIG. 1 , the electrode 10 in the humidity sensor 4 may include at least two electrode sections 100 whose extension directions intersect. The extension direction refers to any direction parallel to the plane where the film layer of the electrode 10 is arranged. Figure 5 It is exemplarily shown in FIG. 1 that the electrode 10 includes two electrode sections 100 extending in a second direction Y and a third direction Z perpendicular to the second direction Y, but the actual arrangement is not limited thereto.

[0065] Providing the electrode 10 with at least two electrode sections 100 intersecting in two extending directions is beneficial to increasing the extension length of the electrode 10 , improving the contact area between the electrode 10 and the humidity sensing film layer 11 , and making the resistance change of the electrode 10 more sensitive and accurate.

[0066] in, Figure 5 The electrode sections 100 shown in the figure all extend in a straight line, but the actual arrangement is not limited thereto. For example, the electrode sections 100 may also extend in a curve.

[0067] Optional, can still refer to Figure 5In a possible embodiment, the electrode 10 includes a first electrode 101 and a second electrode 102; the first electrode 101 includes a first main body 1011 and a plurality of first branch portions 1012, and the plurality of first branch portions 1012 are electrically connected to the first main body 1011; the second electrode 102 includes a second main body 1021 and a plurality of second branch portions 1022, and the plurality of second branch portions 1022 are electrically connected to the second main body 1021; along the extension direction of the first main body 1011, the first branch portions 1012 and the second branch portions 1022 are alternately arranged in sequence.

[0068] Specifically, Figure 5 As shown in , the same humidity sensor 4 may include two electrodes 10, namely a first electrode 101 and a second electrode 102, which constitute the cathode and anode of the humidity sensor 4. The first electrode 101 includes a first main body 1011 and a plurality of first branches 1012 electrically connected to the first main body 1011, that is, the extension direction of the first main body 1011 is different from the extension direction of the first branches 1012; similarly, the second electrode 102 includes a second main body 1021 and a plurality of second branches 1022 electrically connected to the second main body 1021, that is, the extension direction of the second main body 1021 is different from the extension direction of the second branches 1022. Figure 5 It is exemplarily shown that the extension direction of the first main body 1011 is perpendicular to the extension direction of each first branch portion 1012, the extension direction of the second main body 1021 is perpendicular to the extension direction of each second branch portion 1022, and the extension directions of the first main body 1011 and the second main body 1021 are parallel to the third direction Z, and the extension directions of each first branch portion 1012 and each second branch portion 1022 are parallel to the second direction Y, but the actual setting method is not limited to this.

[0069] It is worth mentioning that, in this embodiment, along the extension direction of the first main body 1011, the first branch portions 1012 and the second branch portions 1022 are arranged alternately in sequence. Figure 5 As shown in , along the third direction Z extending from the first main body 1011, the first branch portion 1012 and the second branch portion 1022 are arranged alternately in sequence. In this arrangement, in the area covered by the humidity sensing film layer 11, the area of ​​the electrode 10 is larger, that is, the contact area between the electrode 10 and the humidity sensing film layer 11 is larger, which further ensures that the electrode 10 fully senses the change in humidity and improves the sensitivity of the driving current regulation.

[0070] Figure 5In the embodiment shown, the first main body 1011 of the first electrode 101 and the second main body 1021 of the second electrode 102 extend in the same direction, so the first branch 1012 of the first electrode 101 and the second branch 1022 of the second electrode 102 are also arranged alternately in the extending direction of the second main body 1021. In addition, the second main body 1021, the second main body 1021, the first branch 1012 and the second branch 1022 may also extend in a curve.

[0071] Optional, Figure 7 A partial cross-sectional structural diagram of a display panel provided by an embodiment of the present invention, referring to Figure 1 , Figure 6 and Figure 7 In this embodiment, the display panel may further include a pixel circuit 13, the pixel circuit 13 includes a thin film transistor 14 and a storage capacitor 15, the thin film transistor 14 includes a gate 16, and the storage capacitor 15 includes a capacitor plate 17; the electrode 10 is arranged in the same layer as one or both of the gate 16 and the capacitor plate 17.

[0072] Specifically, Figure 1 , Figure 6 and Figure 7 , the display panel is also provided with a pixel circuit 13, and the pixel circuit 13 is used to drive the light-emitting unit 3 to emit light. The pixel circuit 13 includes a thin film transistor 14 and a storage capacitor 15, the thin film transistor 14 includes a gate 16, and the storage capacitor 15 includes a capacitor plate 17. In the embodiment of the present invention, the electrode 10 of the humidity sensor 4 can be set in the film layer where the gate 16 of the thin film transistor 14 is located and / or the film layer where the capacitor plate 17 of the storage capacitor 15 is located, that is, when forming the gate 16 or the capacitor plate 17, the electrode 10 structure of the humidity sensor 4 is prepared simultaneously using the same layer of metal material.

[0073] It can be understood that the gate 16 and the capacitor plate 17 are generally formed of corrosion-resistant metal, for example, prepared using a metal material containing molybdenum elements. The electrode 10 of the humidity sensor 4 is set on the same layer as one or both of the gate 16 and the capacitor plate 17. When preparing the gate 16 and / or the capacitor plate 17, the electrode 10 of the humidity sensor 4 is prepared at the same time. This can not only simplify the preparation process of the humidity sensor 4, but also help to enhance the corrosion resistance of the electrode 10 and improve the reliability of the humidity sensor 4.

[0074] in, Figure 6 The two electrodes 10 are shown in the same layer as the gate electrode 16 of the thin film transistor 14 and a capacitor plate 17 of the storage capacitor 15. Figure 7In the figure, the two electrodes 10 are both in the same layer as a capacitor plate 17 of the storage capacitor 15. In other embodiments not shown, the two electrodes 10 can be respectively arranged in the film layer where the gate 16 is located and the film layer where the capacitor plate 17 is located, or the two electrodes 10 are arranged in any metal film layer inside the display panel, such as the active layer 18 of the thin film transistor 14. Figure 6 and Figure 7 Based on the illustrated embodiment, those skilled in the art can know the specific implementation method when the two electrodes 10 are provided with different film layers, which will not be elaborated here.

[0075] The display panel also includes other conventional film layer structures such as a substrate 19, an organic layer 20 and an encapsulation layer 21. The conventional film layer structures can be arranged by those skilled in the art according to actual conditions, and the embodiments of the present invention do not elaborate on or limit this.

[0076] Optional, Figure 8 for Figure 1 For the enlarged structural diagram at D, please refer to Figure 1 and Figure 8 The display panel may include multiple groups of humidity sensor groups 2; the multiple groups of humidity sensor groups 2 are arranged in series.

[0077] Specifically, in an embodiment of the present invention, a plurality of humidity sensor groups 2 connected in series may be provided in the display panel, and each humidity sensor group 2 is provided in a different area of ​​the display panel. The humidity sensor groups 2 in different areas are connected in series and electrically connected to the driving module 1. The detection results of each humidity sensor group 2 may be fed back to the driving module 1, thereby improving the monitoring accuracy of the driving module 1 on the overall humidity conditions inside the display panel.

[0078] like Figure 8 As shown in, in this embodiment, the humidity sensor 4 in each humidity sensor group 2 can still be set to include two electrodes 10, namely a first electrode 101 (cathode) and a second electrode 102 (anode), and a humidity sensitive film layer 11 covering the first electrode 101 and the second electrode 102. At this time, in order to realize the series connection of each humidity sensor group 2, the humidity sensors 4 of adjacent humidity sensor groups 2 can be set to be connected through different electrodes 10.

[0079] Specifically, Figure 8 As shown in the figure, along the third direction Z, the second electrode 102 of the humidity sensor 4 in the first humidity sensor group 2 is electrically connected to the first electrode 101 of the humidity sensor 4 in the second humidity sensor group 2; the second electrode 102 of the humidity sensor 4 in the second humidity sensor group 2 is electrically connected to the first electrode 101 of the humidity sensor 4 in the third humidity sensor group 2, and the humidity sensors 4 of other humidity sensor groups 2 not shown are also connected in this way, thereby realizing the series connection of each humidity sensor group 2.

[0080] The following describes the change of resistance information obtained by the driver module 1 in the case of N humidity sensor groups 2 connected in series: if none of the humidity sensors 4 in the N humidity sensor groups 2 detects humidity, the resistance value corresponding to the resistance information received by the driver module 1 should be N*R, where R is the resistance value when a single humidity sensor 4 does not detect humidity; when the humidity sensor 4 at one position senses humidity, the resistance value corresponding to the resistance information received by the driver module 1 becomes (N-1)*R+R1, where R1 is the resistance value when a single humidity sensor 4 detects humidity, and R1 should be less than R; when the humidity sensors 4 at M positions sense humidity, and each sensed humidity is the same, the resistance value corresponding to the resistance information received by the driver module 1 becomes (NM)*R+M*R1. The driver module 1 can determine the change of humidity inside the display panel based on the acquired resistance information, and then accurately adjust the driving current of the light-emitting unit 3.

[0081] Optional, Fig. 9 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention, referring to Fig. 9 In a possible embodiment, the display panel includes multiple humidity sensor groups 2, and the multiple humidity sensor groups 2 are electrically connected to the driving modules 1 respectively; the multiple humidity sensor groups 2 include a first humidity sensor group 201 and a second humidity sensor group 202.

[0082] The multiple light-emitting units 3 include a first light-emitting unit group 301 and a second light-emitting unit group 302. Along the second direction Y, the minimum distance d1 between the first light-emitting unit group 301 and the first humidity sensor group 201 is less than a preset distance, and the minimum distance d2 between the second light-emitting unit group 302 and the second humidity sensor group 202 is less than a preset distance; the second direction Y is parallel to the plane where the substrate of the display panel is located.

[0083] The driving module 1 is used to adjust the driving current of the first light emitting unit group 301 according to the humidity information fed back by the first humidity sensor group 201 , and to adjust the driving current of the second light emitting unit group 302 according to the humidity information fed back by the second humidity sensor group 202 .

[0084] Specifically, Fig. 9 As shown, in this embodiment, multiple groups of humidity sensor groups 2 are still set in the display panel. What is different from the above embodiments is that the multiple groups of humidity sensor groups 2 in this embodiment are electrically connected to the driving module 1 respectively, that is, the multiple groups of humidity sensor groups 2 are connected in parallel. At this time, the driving module 1 can receive the humidity information detected by each humidity sensor group 2 respectively.

[0085] Among them, the multiple groups of humidity sensor groups 2 can be divided into a first humidity sensor group 201 and a second humidity sensor group 202, and the first humidity sensor group 201 and the second humidity sensor group 202 can be divided based on the position of the humidity sensor group in the display panel. At the same time, in this embodiment, the light-emitting unit 3 can be divided into a first light-emitting unit group 301 and a second light-emitting unit group 302, and along the second direction Y, the minimum distance d1 between the first light-emitting unit group 301 and the first humidity sensor group 201 is less than the preset distance, and the minimum distance d2 between the second light-emitting unit group 301 and the second humidity sensor group 202 is less than the preset distance, wherein the minimum distance refers to the distance between the closest edges of the light-emitting unit group and the humidity sensor group 2. The above content can also be understood as, along the second direction Y, the first light-emitting unit group 301 is closer to the first humidity sensor group 201, and the second light-emitting unit group 302 is closer to the second humidity sensor group 202.

[0086] Furthermore, at this time, the driving module 1 can adjust the driving current of the first light-emitting unit group 301 and the second light-emitting unit group 302 respectively according to the humidity information fed back by the first humidity sensor group 201 and the second humidity sensor group 202. Under this setting mode, the driving module 1 can adjust the driving current of the light-emitting unit group closer to the area according to the humidity change feedback from the humidity sensor group 2 in different areas, that is, the driving module 1 can realize the differential adjustment of the driving current of the light-emitting unit 3 at different positions of the display panel according to the humidity information, and under the premise of reducing the risk of corrosion, make the brightness of each light-emitting unit 3 after the driving current adjustment closer to the original light brightness, so as to ensure the display effect of the display panel.

[0087] For example, if the humidity information detected by the first humidity sensor group 201 and the second humidity sensor group 202 both change, and the humidity information changes are the same, the driving module 1 can adjust the driving current of the first light-emitting unit group 301 according to the humidity information fed back by the first humidity sensor group 201, and adjust the driving current of the second light-emitting unit group 302 according to the humidity information fed back by the second humidity sensor group 202. Since the humidity information fed back by the first humidity sensor group 201 and the second humidity sensor group 202 are the same, the driving current adjustment amounts of the first light-emitting unit group 301 and the second light-emitting unit group 302 should also be the same.

[0088] For example, if the humidity information detected by the first humidity sensor group 201 and the second humidity sensor group 202 both change, and the changes in the humidity information detected by the first humidity sensor group 201 and the second humidity sensor group 202 are different, then the driving module 1 can adjust the driving current of the first light-emitting unit group 301 according to the humidity information fed back by the first humidity sensor group 201, and adjust the driving current of the second light-emitting unit group 302 according to the humidity information fed back by the second humidity sensor group 202. It can be understood that since the humidity information fed back by the first humidity sensor group 201 and the second humidity sensor group 202 are different, the driving current adjustment amounts of the first light-emitting unit group 301 and the second light-emitting unit group 302 are also different.

[0089] Taking the humidity information including resistance information as an example, the resistance information when the humidity sensor group 2 does not sense the humidity change can be set to the first resistance value. In this embodiment, the resistance information fed back to the driving module 1 by the first humidity sensor group 201 and the second humidity sensor group 202 is less than the first resistance value, and the resistance information fed back by the two is different. For example, the resistance information fed back by the first humidity sensor group 201 is the second resistance value, and the resistance information fed back by the second humidity sensor group 202 is the third resistance value. The second resistance value and the third resistance value are not equal. At this time, the driving module 1 can determine that there is a difference in the humidity change at the first humidity sensor group 201 and the second humidity sensor group 202. Then the driving module 1 can adjust the driving current of the first light-emitting unit group 301 closer to the first humidity sensor group 201 according to the second resistance value, and adjust the driving current of the second light-emitting unit group 302 closer to the second humidity sensor group 202 according to the third resistance value. The driving current adjustment amplitude of each light-emitting unit 3 is matched with the humidity change in the area where it is located, thereby reducing the probability of each light-emitting unit 3 being corroded by moisture, while ensuring that the difference between the display effect in different areas and the required display effect is small, and having little impact on the display effect of the display panel.

[0090] Optional, Fig.10 A schematic diagram of the structure of another display panel provided by an embodiment of the present invention, referring to Fig.10In another possible embodiment, the display panel may include a third humidity sensor group 203; the plurality of light-emitting units 303 include a third light-emitting unit group 303 and a fourth light-emitting unit group 304, and along the second direction Y, a minimum distance d3 between the third light-emitting unit group 303 and the third humidity sensor group 203 is smaller than a minimum distance d4 between the fourth light-emitting unit group 304 and the third humidity sensor group 203; the second direction Y is parallel to a plane where a substrate of the display panel is located; the driving module 1 is used to adjust the driving currents of the third light-emitting unit group 303 and the fourth light-emitting unit group 304 respectively according to the humidity information fed back by the third humidity sensor group 203, and the driving current adjustment amount of the third light-emitting unit group 303 is greater than the driving current adjustment amount of the fourth light-emitting unit group 304.

[0091] Specifically, Fig.10 As shown, in this embodiment, a humidity sensor group 2, namely, the third humidity sensor group 203, may be provided in the display panel. At the same time, the plurality of light-emitting units 3 include a third light-emitting unit group 303 and a fourth light-emitting unit group 304. Along the second direction Y, the minimum distance d3 between the third light-emitting unit group 303 and the third humidity sensor group 203 is smaller than the minimum distance d4 between the fourth light-emitting unit group 304 and the third humidity sensor group 203. That is, along the second direction Y, the third light-emitting unit group 303 is closer to the third humidity sensor group 203, and the fourth light-emitting unit group 304 is farther from the third humidity sensor group 203.

[0092] It is understandable that when the humidity near the third humidity sensor group 203 changes, the humidity at the light-emitting unit group closer to the third humidity sensor group 203 is higher, and the place is more susceptible to moisture corrosion, that is, compared with the fourth light-emitting unit group 304, the humidity at the third light-emitting unit group 303 is higher and more susceptible to corrosion. Therefore, in this embodiment, the driving module 1 can adjust the driving current of the third light-emitting unit group 303 and the fourth light-emitting unit group 304 according to the humidity information fed back by the third humidity sensor group 203. Since the third light-emitting unit group 303 is closer to the third humidity sensor group 203, the driving current adjustment amount of the third light-emitting unit group 303 by the driving module 1 is greater than the driving current adjustment amount of the fourth light-emitting unit group 304, so as to ensure that the adjustment range of the driving current of the light-emitting unit 3 by the driving module 1 is consistent with the humidity change of the area, while reducing the probability of each light-emitting unit 3 being corroded by moisture, ensuring that the difference between the display effect of different areas and the required display effect is small, thereby ensuring the display effect of the display panel.

[0093] Optional, Fig.11 A schematic diagram of the structure of a humidity sensor group provided by an embodiment of the present invention is shown in FIG. Fig.12 for Fig.11 Schematic diagram of the cross-section structure along the E-E' section line, refer to Fig.11 and Fig.12 In a possible embodiment, each humidity sensor group 2 includes at least two humidity sensors 4; at least two humidity sensors 4 in the same humidity sensor group 2 are arranged in parallel.

[0094] Specifically, Fig.11 and Fig.12 As shown in , each humidity sensor group 2 may include at least two humidity sensors 4 connected in parallel. The advantage of including at least two humidity sensors 4 connected in parallel in the same humidity sensor group 2 is that when one humidity sensor 4 in the same humidity sensor group 2 fails, the other humidity sensor 4 can still sense humidity information normally, which will not affect the normal operation of the humidity sensor group 2, thereby ensuring that the humidity sensor group 2 detects the humidity information of the display panel in real time.

[0095] The embodiment of the present invention does not limit the specific configuration of the humidity sensors 4 in the same humidity sensor group 2, and those skilled in the art may configure the humidity sensors 4 according to actual requirements, as long as the humidity sensors 4 are connected in parallel. Fig.11 and Fig.12 The figure shows a first humidity sensor 41 and a second humidity sensor 42 connected in parallel, and both the first humidity sensor 41 and the second humidity sensor 42 are composed of an electrode 10 and a humidity sensing film layer 11 covering the electrode 10, but the actual arrangement is not limited thereto.

[0096] Optionally, when the humidity sensor 4 includes the electrode 10 and the humidity sensing film layer 11, the electrodes 10 of different humidity sensors 4 in the same humidity sensor group 2 can be arranged in the same film layer, for example, in the same layer as the gate electrode of the thin film transistor (such as Fig.11 and Fig.12 ), and may also be arranged in different film layers, for example, the electrode 10 of one humidity sensor 4 is in the same layer as the gate electrode of the thin film transistor, and the electrode 10 of another humidity sensor 4 is in the same layer as the capacitor plate of the storage capacitor, etc. In addition, the dimensions of the electrodes 10 and the humidity sensing film layer 11 of different humidity sensors 4 in the first direction X and the second direction Y can be adjusted according to actual needs, and the embodiment of the present invention does not limit this.

[0097] Optional, can still refer to Figure 1 In the embodiment of the present invention, the display panel includes a display area AA and a non-display area NA at least located on one side of the display area AA; the humidity sensor group 2 is disposed in the non-display area NA.

[0098] Specifically, in this embodiment, the display panel includes a display area AA and a non-display area NA, and the non-display area NA is located at least on one side of the display area AA, and the humidity sensor group 2 can be arranged in the non-display area NA. By arranging the humidity sensor group 2 in the non-display area NA, the humidity sensor 4 can detect the humidity change inside the display panel without affecting the display effect of the display panel.

[0099] Based on the same inventive concept, an embodiment of the present invention further provides a display device. Fig.13 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention, and the display device includes a display panel 1000 provided in any embodiment of the present invention. Therefore, the display device provided in the embodiment of the present invention has the corresponding beneficial effects of the display panel 1000 provided in the embodiment of the present invention, which will not be described in detail here. Exemplarily, the display device can be an electronic device such as a mobile phone, a computer, a smart wearable device (for example, a smart watch), and a vehicle-mounted display device, which is not limited in the embodiment of the present invention.

[0100] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: It includes a driving module, at least one humidity sensor group and a plurality of light-emitting units, wherein the humidity sensor group includes at least one humidity sensor, and the driving module is electrically connected to the humidity sensor group and the light-emitting units respectively; The humidity sensor is used to detect humidity information inside the display panel and feed back the humidity information to the driving module, and the driving module is used to adjust the driving current of the light-emitting unit according to the humidity information; Wherein, the humidity sensor comprises an electrode and a humidity sensing film layer; Along the first direction and the second direction, the moisture-sensitive film layer covers the electrode, and the electrode is electrically connected to the driving module; the first direction is the vertical light emitting direction of the display panel, and the second direction is parallel to the plane where the substrate of the display panel is located.

2. The display panel according to claim 1, characterized in that: The driving module includes a control unit, a driving chip and a flexible circuit board; The display panel further comprises a data signal line and a power signal line, wherein the data signal line is electrically connected to the driving chip and the light-emitting unit respectively, and the power signal line is electrically connected to the flexible circuit board and the light-emitting unit respectively; The control unit is electrically connected to the humidity sensor group, the driving chip and the flexible circuit board respectively, and the control unit is used to output the humidity information to the driving chip and the flexible circuit board respectively; The driving chip is used to adjust the data signal transmitted in the data signal line according to the humidity information; The flexible circuit board is used to adjust the power signal transmitted in the power signal line according to the humidity information.

3. The display panel according to claim 1, characterized in that: The humidity information includes resistance information; The resistance information includes a first resistance threshold and a second resistance threshold, the change amount of the driving current corresponding to the first resistance threshold is a first change amount, and the change amount of the driving current corresponding to the second resistance threshold is a second change amount; The first resistance threshold is greater than the second resistance threshold, and the first change amount is less than the second change amount.

4. The display panel according to claim 1, characterized in that: The humidity information includes resistance information; The resistance information includes a first resistance threshold and a second resistance threshold, the data signal corresponding to the first resistance threshold is a first data signal, and the power signal is a first power signal; the data signal corresponding to the second resistance threshold is a second data signal, and the power signal is a second power signal; The first data signal is smaller than the second data signal, and the first power signal is larger than the second power signal.

5. The display panel according to claim 2, characterized in that: The control unit and the driving chip are independently arranged; Alternatively, the control unit and the driving chip are integrated.

6. The display panel according to claim 1, characterized in that: The display panel includes a plurality of groups of humidity sensor groups; For the humidity sensors in at least two of the humidity sensor groups, the humidity sensing film layers have the same size in the first direction and the second direction, and the electrodes have the same size in the first direction and the second direction.

7. The display panel according to claim 1, characterized in that: The electrode includes at least two electrode sections whose extending directions intersect with each other.

8. The display panel according to claim 7, characterized in that: The electrodes include a first electrode and a second electrode; The first electrode includes a first main body and a plurality of first branch parts, and the plurality of first branch parts are electrically connected to the first main body; The second electrode includes a second main body and a plurality of second branch portions, and the plurality of second branch portions are electrically connected to the second main body; Along the extending direction of the first main body, the first branch portions and the second branch portions are alternately arranged in sequence.

9. The display panel according to claim 1, characterized in that: The display panel further comprises a pixel circuit, wherein the pixel circuit comprises a thin film transistor and a storage capacitor, wherein the thin film transistor comprises a gate electrode, and the storage capacitor comprises a capacitor plate; The electrode is arranged in the same layer as one or both of the gate and the capacitor plate.

10. The display panel according to claim 1, characterized in that: The display panel includes a plurality of groups of humidity sensor groups; A plurality of humidity sensor groups are arranged in series.

11. The display panel according to claim 1, characterized in that: The display panel comprises a plurality of humidity sensor groups, and the plurality of humidity sensor groups are electrically connected to the driving modules respectively; The plurality of groups of humidity sensors include a first humidity sensor group and a second humidity sensor group; The plurality of light-emitting units include a first light-emitting unit group and a second light-emitting unit group. Along a second direction, a minimum distance between the first light-emitting unit group and the first humidity sensor group is less than a preset distance, and a minimum distance between the second light-emitting unit group and the second humidity sensor group is less than the preset distance. The second direction is parallel to a plane where a substrate of the display panel is located. The driving module is used to adjust the driving current of the first light-emitting unit group according to the humidity information fed back by the first humidity sensor group, and to adjust the driving current of the second light-emitting unit group according to the humidity information fed back by the second humidity sensor group.

12. The display panel according to claim 1, characterized in that: The display panel includes a third humidity sensor group; The plurality of light-emitting units include a third light-emitting unit group and a fourth light-emitting unit group, and along a second direction, a minimum distance between the third light-emitting unit group and the third humidity sensor group is smaller than a minimum distance between the fourth light-emitting unit group and the third humidity sensor group; the second direction is parallel to a plane where a substrate of the display panel is located; The driving module is used to adjust the driving current of the third light-emitting unit group and the fourth light-emitting unit group respectively according to the humidity information fed back by the third humidity sensor group, and the driving current adjustment amount of the third light-emitting unit group is greater than the driving current adjustment amount of the fourth light-emitting unit group.

13. The display panel according to claim 1, characterized in that: Each group of humidity sensors includes at least two humidity sensors; At least two of the humidity sensors in the same humidity sensor group are arranged in parallel.

14. The display panel according to claim 1, characterized in that: The display panel comprises a display area and a non-display area at least located on one side of the display area; The humidity sensor group is disposed in the non-display area.

15. A display device, characterized in that: A display panel comprising any one of claims 1-14.

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