Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel comprises a display area and a non-display area; the display area comprises a plurality of light emitting elements; the non-display area comprises a power signal bus, a control unit and a load unit; the power signal bus is used for providing a power voltage signal for the light emitting elements; the control unit is connected with the power signal bus and the load unit respectively, and the control unit is used for controlling the connection state between the load unit and the power signal bus. The application stabilizes the voltage output on the power signal bus by connecting the load unit to the power signal bus, effectively improves the water ripples and improves the display effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of OLED display, in particular to a display panel and a display device. BACKGROUND

[0002] Organic Light Emitting Diode (OLED) is a current-driven light-emitting device, which is widely used in mobile phones, tablets and other display devices due to its self-luminous, fast response, wide viewing angle and flexibility. It is found in the prior art that when the OLED screen body is actually matched with the whole machine for display, the water ripples phenomenon occurs, which affects the display effect of the display panel. SUMMARY

[0003] In view of the problems in the prior art, the present application aims to provide a display panel and a display device to improve the water ripples phenomenon during display of the display panel and improve the display effect of the display panel.

[0004] The display panel provided by the present application comprises a display area and a non-display area.

[0005] The display area comprises a plurality of light-emitting elements.

[0006] The non-display area comprises a power signal bus, a control unit and a load unit; the power signal bus is used to provide a power voltage signal for the light-emitting elements.

[0007] The control unit is connected with the power signal bus and the load unit respectively, and is used to control the connection state between the load unit and the power signal bus.

[0008] In some embodiments, the display panel comprises a plurality of load units and a plurality of control units.

[0009] The load units and the control units are connected one by one.

[0010] In some embodiments, the display panel further comprises a plurality of load control signal lines, which are electrically connected with the control units and are used to control the conduction state of the control units.

[0011] Among them, the load control signal lines connected with each control unit are different.

[0012] In some embodiments, the signals transmitted in the load control signal lines connected with each control unit are at least partially different.

[0013] In some embodiments, the display panel further comprises a load control signal line.

[0014] The control unit includes a switching transistor, the load control signal line is electrically connected to the gate of the switching transistor, a first electrode of the switching transistor is electrically connected to the power signal bus, and a second electrode of the switching transistor is electrically connected to the load unit.

[0015] In some embodiments, the light-emitting element includes a first electrode layer, a second electrode layer, and a light-emitting layer located between the first electrode layer and the second electrode layer;

[0016] The power signal bus includes a first power signal bus, and the first power signal bus is electrically connected to the first electrode layer;

[0017] The control unit includes a first control unit electrically connected to the first power signal bus;

[0018] The load unit includes a first load unit, and the first load unit is electrically connected to the first control unit.

[0019] In some embodiments, the power signal bus includes a second power signal bus, and the second power signal bus is electrically connected to the second electrode layer;

[0020] The control unit includes a second control unit electrically connected to the second power signal bus;

[0021] The load unit includes a second load unit, and the second load unit is electrically connected to the second control unit.

[0022] In some embodiments, the first power signal bus transmits a positive voltage signal, and the second power signal bus transmits a negative voltage signal.

[0023] In some embodiments, the display panel further includes a plurality of load control signal lines, wherein the load control signal lines are electrically connected to the control unit and are used to control a conduction state of the control unit;

[0024] The first control unit and the second control unit are connected to different load control signal lines.

[0025] In some embodiments, the load unit includes a capacitor or a resistor.

[0026] In some embodiments, the display panel includes a plurality of the load units, the plurality of the load units include at least two capacitors and at least two resistors, the at least two capacitors form a capacitor group, the at least two resistors form a resistor group, and the capacitor group and the resistor group are arranged in parallel.

[0027] In some embodiments, the display panel further includes a driver chip, and the driver chip is electrically connected to the control unit;

[0028] The driver chip is used to obtain the display brightness of the display panel. When the display brightness matches the preset brightness, the driver chip controls the control unit to turn on, so that the load unit is electrically connected to the power signal bus.

[0029] In some embodiments, the driver chip is further configured to control the control unit to shut down when the display brightness does not match the preset brightness, so as to disconnect the load unit and the power signal bus.

[0030] In some embodiments, one end of the load unit is connected to the control unit, and the other end is connected to a ground voltage signal.

[0031] In some embodiments, the non-display area includes a bending area located on one side of the display area, and the load unit is located between the bending area and the display area.

[0032] An embodiment of the present invention further provides a display device, comprising the display panel described above.

[0033] The display panel and display device provided by the present invention have the following advantages:

[0034] The control unit controls the load unit to be electrically connected to the power signal bus. When the load unit is electrically connected to the power signal bus, the load unit can stabilize the voltage signal transmitted on the power signal bus, thereby eliminating the water ripple phenomenon on the display panel and improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Other features, objects and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0036] Figure 1 is a circuit diagram of a pixel circuit according to an embodiment of the present invention;

[0037] Figure 2 is a schematic diagram of pixel driving timing according to an embodiment of the present invention;

[0038] Figure 3 is a schematic plan view of a display panel according to an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the connection between a control unit, a load unit, and a power signal bus according to an embodiment of the present invention;

[0040] Figure 5is a schematic diagram of the connection between a control unit, a load unit, and a power signal bus provided by another embodiment of the present invention;

[0041] Figure 6 is a schematic diagram of the connection between a control unit, a load unit, and a power signal bus provided by another embodiment of the present invention;

[0042] Figure 7 is a schematic diagram of the connection between a control unit, a load unit, and a power signal bus provided by another embodiment of the present invention;

[0043] Figure 8 is a schematic diagram of the connection between a control unit, a load unit, and a power signal bus provided by another embodiment of the present invention;

[0044] Figure 9 is a schematic diagram of the connection between a control unit, a load unit, and a power signal bus provided by another embodiment of the present invention;

[0045] Figure 10 is a schematic diagram of the connection between a control unit, a load unit, and a power signal bus provided by another embodiment of the present invention;

[0046] Figure 11 is a schematic cross-sectional view of a display area of ​​a display panel according to an embodiment of the present invention;

[0047] Figure 12 This is a schematic diagram of the connection between a control unit, a load unit, and a power signal bus provided by another embodiment of the present invention.

[0048] Reference numerals:

[0049] 100 display panel 71 first load unit

[0050] 10 Display area 72 Second load unit

[0051] 20 Non-display area 73 Third load unit

[0052] 21 Bending zone 74 Fourth load unit

[0053] 30 light-emitting elements 80 driver chips

[0054] 40 Power management chip 90 Load control signal line

[0055] 50 Power signal bus 91 First load control signal line

[0056] 51 First power signal bus 92 Second load control signal line

[0057] 52 Second power signal bus 01 substrate

[0058] 60 Control Unit 02 Pixel Circuit Layer

[0059] 61 First Control Unit 03 Anode Layer

[0060] 62 Second control unit 04 light-emitting layer

[0061] 70 Load cell 05 cathode layer DETAILED DESCRIPTION

[0062] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. In the figures, identical reference numerals denote identical or similar structures, and thus repetitive descriptions thereof will be omitted. The use of "or" and "either" in this specification may mean "and" or "or."

[0063] The OLED display screen includes light-emitting elements arranged in an array, each of which emits light through a pixel circuit. For example, the structure of the pixel circuit is as follows: Figure 1 As shown, the corresponding pixel driving timing can be as follows Figure 2 As shown. Figure 1 and Figure 2 As shown, M1 to M7 are switching transistors (such as thin film transistors), Cst is a storage capacitor; S1N and S2N are scan signals, which are used to turn on the corresponding switching transistors at different stages in the scan sequence to achieve the transmission of the corresponding signal; Emit is the light control signal, Vdata is the data signal, PVDD is the first power supply voltage signal, PVEE is the second power supply voltage signal, Vref1 is the first reference voltage signal, and Vref2 is the second reference voltage signal. Figure 2 and Figure 3 , the transistors M1 to M7 can all be switching transistors (for example, P-type transistors) that are turned on at a low level; when S1N is at a low level, corresponding to the initialization stage, the first node N1 and the first end of the OLED are initialized with the first reference voltage signal Vref1 to avoid the influence of the previous frame on the display of the current frame; when S2N is at a low level, corresponding to the data writing and threshold compensation stage, the data signal Vdata is transmitted to the N1 node via the N2 node, the M1 transistor, the N3 node and the M5 transistor. When the threshold voltage of the M1 transistor is written to the first node N1, the M1 transistor is turned off. When this stage is completed, the data signal Vdata and the threshold voltage of the M1 transistor are stored in the storage capacitor Cst; when Emit is at a low level, corresponding to the light-emitting stage, the M1 transistor generates a driving current to drive the OLED to emit light.

[0064] Among them, the scanning signal, the light emitting control signal, the data signal and the power supply voltage signal are all provided based on corresponding signal lines and connected to corresponding pixel circuits.

[0065] The inventors have discovered that when the power supply voltage signal (PVEE / PVDD) ripples due to design or other reasons, it will interfere with the internal display signal of the OLED screen, eventually causing the screen brightness to fluctuate and the appearance of rolling light and dark ripples, affecting the display effect of the display panel.

[0066] To address this issue, an embodiment of the present invention provides a display panel comprising a display area and a non-display area; the display area includes multiple light-emitting elements; the non-display area includes a power signal bus, a control unit, and a load unit; the power signal bus is used to provide a power voltage signal to the light-emitting elements; the control unit is connected to the power signal bus and the load unit, respectively, and is used to control the connection between the load unit and the power signal bus. By adding the load unit, ripples on the power signal bus are eliminated, thereby eliminating water ripples on the display panel and improving the display effect.

[0067] For example, Figure 3 As shown, the display panel 100 provided by an embodiment of the present invention includes a display area 10 and a non-display area 20, the display area 10 includes a plurality of light-emitting elements 30, and the non-display area 20 includes a power signal bus 50, a control unit 60 and a load unit 70, the power signal bus 50 is used to provide a power voltage signal for the light-emitting element 30; the control unit 60 is respectively connected to the power signal bus 50 and the load unit 70, and the control unit 60 is used to control the connection status between the load unit 70 and the power signal bus 50.

[0068] The present invention provides a control unit 60 and a load unit 70. The control unit 60 is connected to the power signal bus 50 and the load unit 70 respectively. The control unit 60 controls the connection state between the load unit 70 and the power signal bus 50. In this way, the load unit 70 is added to eliminate the fluctuation of the power signal output to the pixel circuit. Therefore, there will be no brightness difference in the frame brightness, thereby eliminating the display water ripples and improving the display effect.

[0069] Here, the light emitting element 30 may be an OLED, a quantum dot light emitting diode (QLED), a micro light emitting diode (Micro LED), or other elements having a light emitting function.

[0070] Furthermore, if Figure 4As shown, the display panel 100 further comprises a driving chip 80, which is electrically connected with the control unit 60. The driving chip 80 is configured to acquire the display brightness of the display panel 100, and when the display brightness matches the preset brightness, the driving chip 80 controls the control unit 60 to be turned on, so as to electrically connect the load unit 70 and the power signal bus 50, and eliminate the ripple of the electrical signal transmitted by the power signal bus 50. In some other embodiments, the driving chip 80 is configured to control the control unit 60 to be turned off when the display brightness does not match the preset brightness, so as to disconnect the load unit 70 and the power signal bus 50.

[0071] The display panel 100 adjusts the sizes of the PVDD and the PVEE when displaying different brightnesses, so as to reduce the display power consumption of the display panel 100 when displaying. However, when the sizes of the PVDD and the PVEE adjusted under some display brightnesses are output, the output PVDD and PVEE will have certain fluctuations. Therefore, the display brightness of the display panel is related to the fluctuation of the PVDD and the PVEE. Before the display panel is shipped, some brightnesses that are likely to have ripple, i.e., some scenes that are likely to have ripple, can be preset in the panel. In view of this, the driving chip 80 can be used to detect the display brightness of the display panel 100, so as to determine whether the current display panel 100 will have ripple, and then control the load unit 70 to be connected to the power signal bus 50, so as to stabilize the PVDD and the PVEE output on the power signal bus 50, and effectively improve the ripple phenomenon of the display panel caused by the fluctuations of the PVDD and the PVEE.

[0072] Further, as shown in Figure 4 and Figure 5 The display panel 100 further comprises a load control signal line 90, and the control unit 60 comprises a switching transistor T0. The load control signal line 90 is electrically connected with the gate of the switching transistor T0. The first pole of the switching transistor T0 is electrically connected with the power signal bus 50, and the second pole of the switching transistor T0 is electrically connected with the load unit 70.

[0073] The switching transistor T0 includes a gate, a first electrode, and a second electrode. The first electrode is also referred to as one of the source and drain electrodes, and the second electrode is the other of the source and drain electrodes. When the gate is provided with an operating voltage, the first and second electrodes are conductive, i.e., the transistor is conductive; when the gate is provided with a non-operating voltage, the first and second electrodes are disconnected, i.e., the transistor is off. Transistors can be divided into P-type transistors and N-type transistors according to their conductive characteristics. A P-type transistor is conductive when the gate is at a low voltage and is off when the gate is at a high voltage. i.e., the operating voltage of a P-type transistor is a low voltage, and the non-operating voltage of a P-type transistor is a high voltage. An N-type transistor is conductive when the gate is at a high voltage and is off when the gate is at a low voltage. i.e., the operating voltage of an N-type transistor is a high voltage, and the non-operating voltage of an N-type transistor is a low voltage. In the embodiment of the present invention, the functions of the control unit 60 are explained using the switching transistor as a P-type transistor. However, the specific type of the switching transistor T0 is not limited to a P-type transistor.

[0074] Please continue reading Figure 5 When the load control signal line 90 transmits a high-level operating signal, the switch transistor T0 is turned on, and the power signal bus 50 is electrically connected to the load unit 70. When the load control signal line 90 transmits a low-level operating signal, the switch transistor T0 is turned off, and the power signal bus 50 is disconnected from the load unit 70.

[0075] like Figures 4 to 12 As shown, in some embodiments, one end of the load unit 70 is connected to the control unit 60, and the other end is connected to the ground voltage signal.

[0076] like Figures 6 to 8 As shown, in some embodiments, the load unit 70 includes a capacitor or a resistor. Figure 6 As shown, the load unit 70 includes a resistor R, one end of which is connected to the control unit 60, and the other end of which is connected to the ground voltage signal. When the resistor R is connected to the power signal bus 50, it can be used to stabilize the voltage signal (PVDD or PVEE) output by the power signal bus 50, thereby improving the water ripple phenomenon caused by voltage signal fluctuations in the display panel 100.

[0077] like Figure 7 As shown, in another embodiment, the load unit 70 includes a capacitor C, one end of which is connected to the control unit 60, and the other end of which is connected to the ground voltage signal. When the capacitor C is connected to the power signal bus 50, it can be used to stabilize the voltage signal (PVDD or PVEE) output by the power signal bus 50, thereby improving the water ripple phenomenon caused by voltage signal fluctuations on the display panel 100.

[0078] like Figure 8As shown, in another embodiment, the display panel 100 includes a first load unit 71 and a second load unit 72. The first load unit 71 is a capacitor C, and the second load unit 72 is a resistor R. The capacitor C and the resistor R are connected in parallel, and the capacitor C and the resistor R form an RC circuit. When the RC circuit is connected to the power signal bus 50, it can be used to stabilize the voltage signal (PVDD or PVEE) output by the power signal bus 50, thereby improving the water ripple phenomenon caused by voltage signal fluctuations in the display panel 100.

[0079] like Figure 9 As shown, in other embodiments, the display panel 100 includes a plurality of load units 70, and the plurality of load units 70 include at least two capacitors and at least two resistors, at least two capacitor groups form a capacitor group, at least two resistors form a resistor group, and the capacitor group and the resistor group are arranged in parallel. For example, Figure 9 As shown, the display panel 100 includes a first load unit 71, a second load unit 72, a third load unit 73 and a fourth load unit 74, wherein the first load unit 71 is a capacitor C1, the second load unit 72 is a capacitor C2, the third load unit 73 is a resistor R1, and the fourth load unit 74 is a resistor R2. The two capacitors form a capacitor group, and the two resistors form a resistor group. The capacitor group and the resistor group are arranged in parallel. The number of capacitors and resistors in the load unit 70 is not limited to the number in the above embodiment. In some embodiments, the number of capacitors in the capacitor group may be greater than 2, the number of resistors in the resistor group may be greater than 2, and the number of capacitor groups and resistor groups may be greater than 2. A larger number of capacitors and resistors facilitates flexible selection of corresponding capacitors or resistors and a combination of the two during debugging, so as to better solve the water ripple phenomenon when the display panel is displayed.

[0080] like Figure 10 As shown, in some embodiments, the display panel 100 includes a plurality of load units 70 and a plurality of control units 60, and the load units 70 are connected to the control units 60 in a one-to-one correspondence. Figure 10 As shown, there are two control units 60, represented by a first control unit 61 and a second control unit 62. There are two load units 70, represented by a first load unit 71 and a second load unit 72. The first control unit 61 is electrically connected to the first load unit 71, and the second control unit 62 is electrically connected to the second load unit 72. The corresponding control unit 60 controls the corresponding load unit 70 to be connected to the power signal bus 50.

[0081] like Figure 10As shown, in some embodiments, the display panel 100 further includes a plurality of load control signal lines 90, which are electrically connected to the control unit 60 and used to control the conduction state of the control unit 60; wherein each control unit 60 is connected to a different load control signal line 90. For example, Figure 10 As shown, there are two load control signal lines 90, shown as a first load control signal line 91 and a second load control signal line 92. The first load control signal line 91 is connected to the first control unit 61, and the second load control signal line 92 is connected to the second control unit 62. The first load control signal line 91 transmits a first load control signal for controlling the conduction of the first control unit 61, thereby connecting the first load unit 71 to the power signal bus 50. The second load control signal line 92 transmits a second load control signal for controlling the conduction of the second control unit 62, thereby connecting the second load unit 72 to the power signal bus 50.

[0082] In some embodiments, the signals transmitted in the load control signal lines 90 connected to the control units 60 are at least partially different. Figure 10 As shown, the first load control signal line 91 transmits a first load control signal, and the second load control signal line 92 transmits a second load control signal. If the first load control signal and the second load control signal are different, the first load unit 71 and the second load unit 72 are not connected to the power signal bus 50 at the same time. If the first load control signal and the second load control signal are the same, the first load unit 71 and the second load unit 72 can be connected to the power signal bus 50 at the same time.

[0083] The specific number of the control unit 60, the load unit 70 and the load control signal line 90 can be set according to actual needs, and is not limited to Figure 10 The restrictions in the and the transmission signals in the load control signal line 90 connected to the control unit 60 are the same or different and can be set according to actual needs.

[0084] like Figure 1 As shown, the power supply voltage signal can be provided by a power management IC 40 (Power Management IC, PMIC) and transmitted to the pixel circuit via a power signal bus 50, wherein the power signal bus 50 includes a first power signal bus 51 and a second power signal bus 52. The first power signal bus 51 transmits a positive voltage signal (i.e., a first power voltage signal PVDD), and the second power signal bus 52 transmits a negative voltage signal (i.e., a second power voltage signal PVEE). Please continue to refer to Figure 1In some embodiments, the non-display area 20 includes a bending area 21 located on one side of the display area 10, and the load unit 70 is located between the bending area 21 and the display area 10. The load unit 70 is disposed between the bending area 21 and the display area 10. The load unit 70 is closest to the power management chip 40, and correspondingly, the load unit 70 is closest to the power signal bus 50. When the load unit 70 is electrically connected to the power signal bus 50, the load unit 70 at this position eliminates ripples on the power signal bus 50 at a fast speed, and has a relatively optimal effect in suppressing ripples on the power signal bus 50.

[0085] Combine Figure 3 、 Figure 11 and Figure 12 As shown, in some embodiments, the display panel 100 includes a first electrode layer 03, a second electrode layer 05, and a light-emitting layer 04 located between the first electrode layer 03 and the second electrode layer 05; the power signal bus 50 includes a first power signal bus 51, and the first power signal bus 51 is electrically connected to the first electrode layer;

[0086] The control unit 60 includes a first control unit 61 , which is electrically connected to the first power signal bus 51 ; the load unit 70 includes a first load unit 71 , which is electrically connected to the first control unit 61 .

[0087] When the first power supply voltage signal PVDD outputted from the power management chip 40 ripples, the first control unit 61, in response to an indication of the ripples in the first power supply voltage signal PVDD, electrically connects the load unit 70 to the first power supply signal bus 51. Load unit 70 eliminates the ripples in the PVDD, stabilizing the PVDD outputted to the pixel circuit and thereby eliminating the ripples that appear when the display panel 100 is displayed. Here, the indication of the ripples in the first power supply voltage signal PVDD serves as a turn-on signal for turning on the first control unit 61.

[0088] Please continue reading Figure 3 、 Figure 11 and Figure 12 In some embodiments, the power signal bus 50 includes a second power signal bus 52 , and the second power signal bus 52 is electrically connected to the second electrode layer 05 ;

[0089] The control unit 60 includes a second control unit 62 , which is electrically connected to the second power signal bus 52 ;

[0090] The load unit 70 includes a second load unit 72 , and the second load unit 72 is electrically connected to the second control unit 62 .

[0091] When the second power supply voltage signal PVEE generates ripples, the second control unit 62, in response to the indication that the second power supply voltage signal PVEE generates ripples, electrically connects the load unit 70 to the second power supply signal bus 52. The load unit 70 eliminates the ripples generated by the PVEE, stabilizing the PVEE output to the pixel circuit and thereby eliminating the ripples that appear when the display panel 100 is displayed. Here, the indication that the second power supply voltage signal PVEE generates ripples serves as a turn-on signal that turns on the second control unit 62.

[0092] like Figure 12 As shown, in some embodiments, the display panel 100 further includes a plurality of load control signal lines 90, which are electrically connected to the control unit 60 and used to control the conduction state of the control unit 60; wherein the first control unit 61 and the second control unit 62 are connected to different load control signal lines. For example, Figure 12 As shown, the display panel 100 includes two load control signal lines 90, shown as a first load control signal line 91 and a second load control signal line 92, wherein the first load control signal line 91 is electrically connected to the first control unit 61, and the first load control signal line 91 transmits a first load control signal to control the first control unit 61 to be turned on, so as to connect the first load unit 71 to the first power signal bus 51 and eliminate the ripple of the PVDD voltage; the second load control signal line 92 is electrically connected to the second control unit 62, and the second load control signal line 92 transmits a second load control signal to control the second control unit 62 to be turned on, so as to connect the second load unit 72 to the second power signal bus 52 and eliminate the ripple of the PVEE voltage.

[0093] Please continue reading Figure 11 The display panel 100 includes a pixel circuit layer 02, a first electrode layer 03, a light-emitting layer 04 and a second electrode layer 05 stacked in sequence on one side of a substrate 01, wherein the light-emitting layer 04 forms an array of light-emitting elements 30, the first electrode layer 03 is an anode layer, and the second electrode layer 05 is a cathode layer. The anode layer provides a positive voltage to the light-emitting layer 04, and the cathode layer provides a negative voltage to the light-emitting layer 04 to drive the light-emitting layer 04 to emit light.

[0094] An embodiment of the present invention further provides a display device, comprising a display panel as described above. The display device can achieve all the technical effects of the above-mentioned display panel, which will not be described in detail here. Specifically, the display device can be any device that displays images, whether moving (e.g., video) or fixed (e.g., still images), and whether text or images. More specifically, it is expected that the embodiments described can be implemented in or associated with a variety of electronic devices. The various electronic devices described are, for example, (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat-panel displays, computer monitors, car displays, electronic photos, electronic billboards or signs, projectors, architectural structures, packaging, and aesthetic structures.

[0095] In summary, the display panel and display device provided by the present invention have the following advantages:

[0096] The control unit controls the load unit to be electrically connected to the power signal bus. When the load unit is electrically connected to the power signal bus, the load unit can stabilize the voltage signal transmitted on the power signal bus, thereby eliminating the water ripple phenomenon on the display panel and improving the display effect of the display panel.

[0097] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A display panel, characterized in that: Including display area and non-display area; The display area includes a plurality of light-emitting elements; The non-display area includes a power signal bus, a plurality of control units and a plurality of load units, wherein the load units are connected to the control units in a one-to-one correspondence; the power signal bus is used to provide a power voltage signal to the light-emitting element; The control unit is connected to the power signal bus and the load unit respectively, and the control unit is used to control the connection state between the load unit and the power signal bus; The display panel further includes a plurality of load control signal lines, which are electrically connected to the control unit and used to control the conduction state of the control unit; the signals transmitted in the load control signal lines connected to the respective control units are at least partially different.

2. The display panel according to claim 1, wherein: The load control signal lines connected to the control units are different.

3. The display panel according to claim 1, wherein: The display panel further includes a load control signal line; The control unit includes a switching transistor, the load control signal line is electrically connected to the gate of the switching transistor, a first electrode of the switching transistor is electrically connected to the power signal bus, and a second electrode of the switching transistor is electrically connected to the load unit.

4. The display panel according to claim 1, wherein: The display panel includes a first electrode layer, a second electrode layer, and a light emitting layer located between the first electrode layer and the second electrode layer; The power signal bus includes a first power signal bus, and the first power signal bus is electrically connected to the first electrode layer; The control unit includes a first control unit electrically connected to the first power signal bus; The load unit includes a first load unit, and the first load unit is electrically connected to the first control unit.

5. The display panel according to claim 4, wherein: The power signal bus includes a second power signal bus, and the second power signal bus is electrically connected to the second electrode layer; The control unit includes a second control unit electrically connected to the second power signal bus; The load unit includes a second load unit, and the second load unit is electrically connected to the second control unit.

6. The display panel according to claim 5, wherein: The first power signal bus transmits a positive voltage signal, and the second power signal bus transmits a negative voltage signal.

7. The display panel according to claim 5, wherein: The display panel further comprises a plurality of load control signal lines, wherein the load control signal lines are electrically connected to the control unit and are used to control the conduction state of the control unit; The first control unit and the second control unit are connected to different load control signal lines.

8. The display panel according to claim 1, wherein: The load unit includes a capacitor or a resistor.

9. The display panel according to claim 8, wherein: The display panel includes a plurality of the load units, each of which includes at least two capacitors and at least two resistors. The at least two capacitors form a capacitor group, and the at least two resistors form a resistor group. The capacitor group and the resistor group are arranged in parallel.

10. The display panel according to claim 1, wherein The display panel further includes a driver chip, and the driver chip is electrically connected to the control unit; The driver chip is used to obtain the display brightness of the display panel. When the display brightness matches the preset brightness, the driver chip controls the control unit to turn on, so that the load unit is electrically connected to the power signal bus.

11. The display panel according to claim 10, wherein: The driving chip is further configured to control the control unit to be turned off when the display brightness does not match the preset brightness, so as to disconnect the load unit and the power signal bus.

12. The display panel according to claim 1, wherein The non-display area includes a bending area located at one side of the display area, and the load unit is located between the bending area and the display area.

13. The display panel according to claim 1, wherein One end of the load unit is connected to the control unit, and the other end is connected to the ground voltage signal.

14. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 13.

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