Display device and electronic equipment

Abstract

This application provides a display device and an electronic device. The display device includes a display panel, a signal generating unit, and a first protective resistor. The display panel houses a display unit and a display control circuit. The signal generating unit has a display anode power supply pin, a display cathode power supply pin, and a control circuit power supply pin. The display anode power supply pin supplies power to the anode of the display unit and the display control circuit; the display cathode power supply pin supplies power to the cathode of the display unit and the display control circuit; and the control circuit power supply pin supplies power to the display control circuit. A first protective resistor is provided between the display anode power supply pin and the display panel. During the power-down process, the signal generating unit controls the control circuit power supply pin to stop supplying power, and then controls the display anode power supply pin to stop supplying power. The first protective resistor reduces the maximum current flowing through the display control circuit, preventing large currents from flowing through the display control circuit and avoiding internal burnout of the display control circuit.

Description

Technical Field

[0001] This application relates to the field of display devices, specifically to a display device and electronic device. Background Technology

[0002] In the research and development and production of display devices such as OLEDs, reliability testing is usually required. During actual testing, some display devices may fail to function properly after being powered off and then powered on again following the reliability test.

[0003] After testing, it was found that the cause was that after the power supply pin of the control circuit was powered off during the power-down process, the ESD diode inside the display control circuit was turned on, resulting in excessive current in the display control circuit, which in turn caused the display control circuit to burn out. Summary of the Invention

[0004] In view of this, the present application aims to provide a display device and electronic device to solve the problem in the prior art that the display control circuit of some display devices burns out during the power-down process after reliability testing, and therefore cannot work normally.

[0005] This application provides a display device, including:

[0006] The display panel includes a display unit and a display control circuit.

[0007] The signal generating unit is provided with a display anode power supply pin, a display cathode power supply pin, and a control circuit power supply pin. The display anode power supply pin is configured to supply power to the anode of the display unit and the display control circuit. The display cathode power supply pin is configured to supply power to the cathode of the display unit and the display control circuit. The control circuit power supply pin is configured to supply power to the display control circuit.

[0008] A first protection resistor is disposed between the display anode power supply pin and the display panel;

[0009] The signal generating unit is configured to, during the power-down process, control the power supply pin of the control circuit to stop supplying power to the outside, and then control the power supply pin of the display anode to stop supplying power to the outside.

[0010] In one embodiment of this disclosure, the display panel further includes a display voltage regulation circuit and a second protection resistor, wherein the display anode power supply pin is configured to supply power to the display voltage regulation circuit, the second protection resistor is disposed between the display anode power supply pin and the display voltage regulation circuit, and the signal generation unit is configured to supply power to the display control circuit through the control circuit power supply pin.

[0011] In one embodiment of this disclosure, the signal generating unit is electrically connected to the display panel via a flexible circuit board, and the first protection resistor and / or the second protection resistor are configured to be formed on the flexible circuit board.

[0012] In one embodiment of this disclosure, the resistance value of the first protective resistor is in the range of 100Ω-500Ω, preferably, the resistance value of the first protective resistor is in the range of 300Ω-350Ω.

[0013] And / or, the resistance value of the second protective resistor is in the range of 100Ω-500Ω, preferably, the resistance value of the second protective resistor is in the range of 300Ω-350Ω.

[0014] In one embodiment of this disclosure, the power supply voltage of the display anode power supply pin is 4.6V, and the power supply voltage range of the display cathode power supply pin is -1.4V to -5.4V.

[0015] In one embodiment of this disclosure, the first protection resistor is configured such that during the process of the signal generating unit supplying power to the display panel through the display anode power supply pin, the maximum current passing through it is less than 20mA, preferably 13.9mA;

[0016] And / or, the second protection resistor is configured such that during the process of the signal generating unit supplying power to the display voltage regulating circuit through the display anode power supply pin, the maximum current passing through it is less than 20mA, preferably 13.9mA.

[0017] In one embodiment of this disclosure, the signal generating unit is configured to, during the power-down process, control the power supply pin of the control circuit and the power supply pin of the display cathode to stop supplying power to the outside, and then control the power supply pin of the display anode to stop supplying power to the outside.

[0018] In one embodiment of this disclosure, it further includes: a first capacitor and a second capacitor, wherein the first capacitor is disposed between the display anode power supply pin and the ground terminal; and the second capacitor is disposed between the display cathode power supply pin and the ground terminal.

[0019] In one embodiment of this application, the capacitance values ​​of the first capacitor and the second capacitor are in the range of 2-10μF, and preferably, the capacitance values ​​of the first capacitor and the second capacitor are 4.7μF.

[0020] This application also provides an electronic device, including a power supply and the aforementioned display device, wherein the power supply is configured to supply power to a signal generating unit in the display device.

[0021] In the power-down process of the display device of this application, after the power supply pin of the control circuit stops supplying power to the display control circuit, the power supply pins of the display anode and cathode continue to supply power. However, since a first protective resistor is provided between the power supply pin of the display anode and the display panel, the first protective resistor can greatly reduce the maximum current in the loop formed between the power supply pin of the display anode, the display control circuit and the power supply pin of the display cathode, preventing a large current from flowing through the display control circuit, thereby effectively avoiding internal burnout of the display control circuit. This ensures that when the display device of this application adopts the power-down process in which the power supply pin of the control circuit is powered down before the power supply pins of the display anode and cathode, no large current will flow through the display control circuit, thus ensuring the normal operation of the display control circuit. Attached Figure Description

[0022] Figure 1 The diagram shown is a structural schematic of an existing display device;

[0023] Figure 2 The diagram shown is a structural schematic of the display device of this application;

[0024] Figure 3 The diagram shown is yet another structural schematic of the display device of this application;

[0025] Figure 4 The diagram shown is yet another structural schematic of the display device of this application;

[0026] Figure 5 The diagram shown is yet another structural schematic of the display device of this application;

[0027] Figure 6 The diagram shown is yet another structural schematic of the display device of this application.

[0028] Attached image labels:

[0029] 1. Display panel; 11. Display unit; 12. Display control circuit; 13. Display voltage regulation circuit; 2. Signal generation unit; 21. Display anode power supply pin; 22. Display cathode power supply pin; 23. Control circuit power supply pin; 31. First protection resistor; 32. Second protection resistor; 41. First capacitor; 42. Second capacitor; 5. Grounding terminal; 6. Flexible circuit board. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] like Figure 1 As shown, Figure 1 This is a schematic diagram of the structure of an existing display device. The display device includes a display panel 1 and a signal generating unit 2. The display panel 1 is provided with a display unit 11 and a display control circuit 12. The display unit 11 can emit light when it receives power. The display control circuit 12 can receive the display signal provided by the signal generating unit 2 and control the on / off state and intensity of each pixel of the display panel 1 according to the display signal provided by the signal generating unit 2, so that the display panel 1 displays the corresponding image.

[0032] Specifically, the signal generating unit 2 is provided with a display anode power supply pin 21, a display cathode power supply pin 22, and a control circuit power supply pin 23. The display anode power supply pin 21 is configured to supply power to the anode of the display unit 11 and the display control circuit 12; the display cathode power supply pin 22 is configured to supply power to the cathode of the display unit 11 and the display control circuit 12; and the control circuit power supply pin 23 is configured to supply power to the display control circuit 12. Specifically, the display anode power supply pin 21 applies a positive voltage to the anode of the display unit 11 and the display control circuit 12, the display cathode power supply pin 22 applies a negative voltage to the cathode of the display unit 11 and the display control circuit 12, and the control circuit power supply pin 23 also applies a positive voltage to the display control circuit 12.

[0033] It is understandable that during the process of powering the display control circuit 12 with the power supply pin 23 of the control circuit, not only can the power supply of the display control circuit 12 be guaranteed, but the display signal mentioned above can also be sent to the display control circuit 12 to ensure that the display control circuit 12 can receive the display signal provided by the signal generating unit 2, and control the on / off state and intensity of each pixel of the display panel 1 according to the display signal provided by the signal generating unit 2, so that the display panel 1 can display the corresponding image.

[0034] Specifically, the display control circuit 12 includes an ESD diode, which protects the semiconductor devices of the display control circuit 12 from electrostatic discharge damage. Specifically, when the display control circuit 12 is operating normally, the ESD diode is in the off state (high impedance state), and does not affect the normal operation of the display control circuit 12. When the display control circuit 12 experiences an abnormal overvoltage that reaches its breakdown voltage, the ESD diode quickly changes from a high impedance state to a low impedance state, providing a low-impedance conduction path for the instantaneous current, while clamping the abnormal high voltage within a safe level; when the abnormal overvoltage disappears, the ESD diode returns to the high impedance state.

[0035] During the power-down process of the existing display device, after the power supply pin 23 of the control circuit is powered down, the power supply pin 21 of the display anode and the power supply pin 22 of the display cathode are still supplying power to the outside. This will cause the ESD diode inside the display control circuit 12 to conduct, which will lead to excessive current in the display control circuit 12, resulting in the internal burnout of the display control circuit 12.

[0036] Therefore, as Figure 2 and Figure 6 As shown, this application provides a display device, including a display panel 1, a signal generating unit 2, and a first protection resistor 31. The display panel 1 is provided with a display unit 11 and a display control circuit 12. The signal generating unit 2 is provided with a display anode power supply pin 21, a display cathode power supply pin 22, and a control circuit power supply pin 23. The display anode power supply pin 21 is configured to supply power to the anode of the display unit 11 and the display control circuit 12. The display cathode power supply pin 22 is configured to supply power to the cathode of the display unit 11 and the display control circuit 12. The control circuit power supply pin 23 is configured to supply power to the display control circuit 12.

[0037] Specifically, the display anode power supply pin 21 applies a positive voltage to the anode of the display unit 11 and the display control circuit 12, the display cathode power supply pin 22 applies a negative voltage to the cathode of the display unit 11 and the display control circuit 12, and the control circuit power supply pin 23 applies a positive voltage to the display control circuit 12.

[0038] like Figure 2 and Figure 6 As shown, the first protection resistor 31 is disposed between the display anode power supply pin 21 and the display panel 1, and the signal generation unit 2 is configured to control the display anode power supply pin 21 to stop supplying power after controlling the power supply pin 23 of the control circuit to stop supplying power during the power-down process.

[0039] Thus, in the power-down process of the display device of this application, after the control circuit power supply pin 23 stops supplying power to the display control circuit 12, the display anode power supply pin 21 and the display cathode power supply pin 22 still supply power to the outside. However, since a first protection resistor 31 is provided between the display anode power supply pin 21 and the display panel 1, the first protection resistor 31 can greatly reduce the maximum current in the loop formed between the display anode power supply pin 21, the display control circuit 12 and the display cathode power supply pin 22, preventing a large current from flowing through the display control circuit 12, thereby effectively avoiding the internal burnout of the display control circuit 12. This ensures that when the display device of this application adopts the power-down process in which the control circuit power supply pin 23 is powered down before the display anode power supply pin 21 and the display cathode power supply pin 22, a large current will not flow through the display control circuit 12, ensuring the normal operation of the display control circuit 12.

[0040] Furthermore, such as Figure 3 and Figure 6 As shown, in one embodiment of this application, the display panel 1 further includes a display voltage regulating circuit 13 and a second protection resistor 32. The display anode power supply pin 21 is configured to supply power to the display voltage regulating circuit 13. The second protection resistor 32 is disposed between the display anode power supply pin 21 and the display voltage regulating circuit 13. The signal generation unit 2 is configured to supply power to the display control circuit 12 through the control circuit power supply pin 23.

[0041] In the power-down process of the display device of this application, after the control circuit power supply pin 23 stops supplying power to the display control circuit 12, the display anode power supply pin 21 still supplies power. However, since a second protection resistor 32 is provided between the display anode power supply pin 21 and the display voltage regulation circuit 13, the maximum current output from the display anode power supply pin 21 to the display voltage regulation circuit 13 can be greatly reduced, preventing a large current from flowing through the display voltage regulation circuit 13, thereby effectively avoiding the burning out of the display voltage regulation circuit 13. This ensures that when the display device of this application adopts the power-down process in which the control circuit power supply pin 23 is powered down before the display anode power supply pin 21 and the display cathode power supply pin 22, a large current will not flow through the display voltage regulation circuit 13, thus ensuring the normal operation of the display control circuit 12.

[0042] Furthermore, in one embodiment of this application, the signal generating unit 2 is configured to, during the power-down process, control the power supply pin 23 of the control circuit and the power supply pin 22 of the display cathode to stop supplying power to the outside, and then control the power supply pin 21 of the display anode to stop supplying power to the outside.

[0043] Understandably, during the power-down process, after the control circuit power supply pin 23 and the display cathode power supply pin 22 stop supplying power, the display cathode power supply pin 22 no longer applies a negative voltage to the display unit 11 and the display control circuit 12. This effectively reduces the voltage across the display unit 11 and the display control circuit 12, effectively protecting them. By first controlling the display cathode power supply pin 22 to stop supplying power, and then controlling the display anode power supply pin 21 to stop supplying power, the entire power-down process can be completed.

[0044] like Figure 4 and Figure 6As shown, in one embodiment of this application, the signal generating unit 2 and the display panel 1 are electrically connected via a flexible circuit board 6, and the first protection resistor 31 and / or the second protection resistor 32 are configured to be formed on the flexible circuit board 6. Since the signal generating unit 2 and the display panel 1 are electrically connected via the flexible circuit board 6, and the first protection resistor 31 and / or the second protection resistor 32 are formed on the flexible circuit board 6, it can be ensured that the display device of this application does not require modification to the relevant structures of the signal generating unit 2 and the display panel 1. Only the flexible circuit board 6 needs to be modified, by adding the first protection resistor 31 and the second protection resistor 32 to the circuit line supplying power to the outside of the display anode power supply pin 21. This effectively reduces the modification cost of the corresponding processing equipment for the display device of this application, thereby reducing the overall processing cost of the display device of this application.

[0045] Specifically, in one embodiment of this application, the resistance value of the first protective resistor 31 is in the range of 100Ω-500Ω. With the resistance value of the first protective resistor 31 in the range of 100Ω-500Ω, the maximum current flowing through the loop formed between the display anode power supply pin 21, the display control circuit 12, and the display cathode power supply pin 22 can be reduced, preventing a large current from flowing through the display control circuit 12 and effectively avoiding internal burnout of the display control circuit 12. At the same time, it also prevents the voltage across the display control circuit 12 from being too low due to an excessively high resistance value of the first protective resistor 31, resulting in insufficient current in the entire loop formed between the display anode power supply pin 21, the display control circuit 12, and the display cathode power supply pin 22, thus preventing the display control circuit 12 from malfunctioning.

[0046] Similarly, in one embodiment of this application, the resistance value of the second protection resistor 32 is in the range of 100Ω-500Ω. When the resistance value of the second protection resistor 32 is in the range of 100Ω-500Ω, it can reduce the maximum current flowing through the display voltage regulating circuit 13, effectively preventing the display voltage regulating circuit 13 from burning out, and it can also prevent the display voltage regulating circuit 13 from outputting too low due to the resistance value of the second protection resistor 32 being too high.

[0047] Furthermore, in one embodiment of this application, the resistance value of the first protective resistor 31 is in the range of 300Ω-350Ω. With the resistance value of the first protective resistor 31 in the range of 300Ω-350Ω, the maximum current flowing through the loop formed between the display anode power supply pin 21, the display control circuit 12, and the display cathode power supply pin 22 can be greatly reduced, preventing a large current from flowing through the display control circuit 12 and effectively avoiding internal burnout of the display control circuit 12. Furthermore, it can also prevent the voltage across the display control circuit 12 from being too low due to an excessively high resistance value of the first protective resistor 31, resulting in insufficient current in the entire loop formed between the display anode power supply pin 21, the display control circuit 12, and the display cathode power supply pin 22, thus preventing the display control circuit 12 from functioning properly.

[0048] Similarly, in one embodiment of this application, the resistance value of the second protection resistor 32 is in the range of 300Ω-350Ω. With the resistance value of the second protection resistor 32 in the range of 300Ω-350Ω, the maximum current flowing through the display voltage regulating circuit 13 can be greatly reduced, effectively preventing the display voltage regulating circuit 13 from burning out. Furthermore, it can prevent the display voltage regulating circuit 13 from outputting too low a value due to the excessive resistance of the second protection resistor 32.

[0049] Specifically, in one embodiment of this application, the power supply voltage of the display anode power supply pin 21 is 4.6V, and the power supply voltage range of the display cathode power supply pin 22 is -1.4V to -5.4V. Since the power supply voltage of the display anode power supply pin 21 is 4.6V and the power supply voltage range of the display cathode power supply pin 22 is -1.4V to -5.4V, it can form an overall circuit connecting the display anode power supply pin 21, the display control circuit 12, and the display cathode power supply pin 22, as well as an overall circuit connecting the display anode power supply pin 21, the display unit 11, and the display cathode power supply pin 22, achieving the purpose of powering the display control circuit 12 and the display unit 11. Furthermore, by adjusting the power supply voltage of the display cathode power supply pin 22, the voltage applied to both ends of the display unit 11 by the display anode power supply pin 21 and the display cathode power supply pin 22 can be adjusted, thereby achieving the purpose of controlling the overall brightness of the display unit 11.

[0050] Specifically, in one embodiment of this application, the first protection resistor 31 is configured such that the maximum current passing through it is less than 20mA during the process of the signal generating unit 2 supplying power to the display panel 1 through the display anode power supply pin 21; when the maximum current passing through the first protection resistor 31 is less than 20mA, it can effectively protect the display control circuit 12.

[0051] Furthermore, in one embodiment of this application, the maximum current is 13.9mA, which is the ratio of the supply voltage of the display anode power supply pin 21 (4.6V) to the resistance of the first protection resistor 31 (330Ω). That is, during the power-down process of the signal generation unit 2, after the control circuit power supply pin 23 and the display cathode power supply pin 22 stop supplying power, the display cathode power supply pin 22 no longer applies a negative voltage to the display unit 11 and the display control circuit 12; only the display anode power supply pin 21 applies voltage. Thus, the maximum current in the loop formed between the display anode power supply pin 21, the display control circuit 12, and the display cathode power supply pin 22 is the ratio of the supply voltage of the display anode power supply pin 21 (4.6V) to the resistance of the first protection resistor 31 (330Ω), which is 13.9mA. According to actual measurements, with a maximum current of 13.9mA through the first protection resistor 31, the display control circuit 12 can be effectively protected.

[0052] Similarly, in one embodiment of this application, the second protection resistor 32 is configured such that the maximum current passing through it is less than 20mA during the process of the signal generating unit 2 supplying power to the display voltage regulating circuit 13 through the display anode power supply pin 21. When the maximum current passing through the second protection resistor 32 is less than 20mA, it can effectively protect the display voltage regulating circuit 13.

[0053] Furthermore, in one embodiment of this application, the maximum current is 13.9mA, which is the ratio of the supply voltage of 4.6V for the display anode power supply pin 21 to the resistance of 330Ω for the second protection resistor 32. That is, during the power-down process of the signal generation unit 2, after the control circuit power supply pin 23 and the display cathode power supply pin 22 stop supplying power, the maximum current through the second protection resistor 32 is the ratio of the supply voltage of 4.6V for the display anode power supply pin 21 to the resistance of 330Ω for the second protection resistor 32, which is 13.9mA. According to actual measurements, when the maximum current through the second protection resistor 32 is 13.9mA, it can effectively protect the display voltage regulation circuit 13.

[0054] like Figure 5 and Figure 6As shown, in one embodiment of this application, a first capacitor 41 is provided between the display anode power supply pin 21 and the ground terminal 5; a second capacitor 42 is provided between the display cathode power supply pin 22 and the ground terminal 5. By providing the first capacitor 41 between the display anode power supply pin 21 and the ground terminal 5, and the second capacitor 42 between the display cathode power supply pin 22 and the ground terminal 5, the AC component in the voltage signals output by the display anode power supply pin 21 and the display cathode power supply pin 22 can be basically filtered out, ensuring that the display anode power supply pin 21 and the display cathode power supply pin output a stable DC voltage, thereby ensuring the normal operation of the display unit 11, the display control circuit 12, and the display voltage regulation circuit 13.

[0055] In one embodiment of this application, the capacitance values ​​of the first capacitor 41 and the second capacitor 42 are in the range of 2-10 μF. In one embodiment of this application, when the capacitance values ​​of the first capacitor 41 and the second capacitor 42 are in the range of 2-10 μF, it can be ensured that the first capacitor 41 and the second capacitor 42 have a good filtering effect on low-frequency voltage ripple, so as to ensure that the output voltage from the display anode power supply pin 21 and the display cathode power supply pin is a stable DC voltage.

[0056] Furthermore, in one embodiment of this application, the capacitance values ​​of the first capacitor 41 and the second capacitor 42 are 4.7μF. With the capacitance values ​​of the first capacitor 41 and the second capacitor 42 at 4.7μF, the device cost of the first capacitor 41 and the second capacitor 42 can be effectively reduced, thereby reducing the processing cost of the display device of this application, and also facilitating the debugging and maintenance of the overall circuit.

[0057] This application also provides an electronic device, including a power supply and the aforementioned display device, wherein the power supply is configured to supply power to the signal generating unit 2 in the display device. The above description is merely a preferred embodiment of this application and is not intended to limit the application. Any modifications, equivalent substitutions, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display device, characterized in that, include: Display panel (1), wherein a display unit (11) and a display control circuit (12) are provided in the display panel (1); The signal generating unit (2) is provided with a display anode power supply pin (21), a display cathode power supply pin (22) and a control circuit power supply pin (23). The display anode power supply pin (21) is configured to supply power to the anode of the display unit (11) and the display control circuit (12). The display cathode power supply pin (22) is configured to supply power to the cathode of the display unit (11) and the display control circuit (12). The control circuit power supply pin (23) is configured to supply power to the display control circuit (12). A first protection resistor (31) is disposed between the display anode power supply pin (21) and the display panel (1); The signal generating unit (2) is configured to control the power supply pin (23) of the control circuit to stop supplying power to the outside during the power-down process, and then control the power supply pin (21) of the display anode to stop supplying power to the outside.

2. The display device according to claim 1, characterized in that, The display panel (1) further includes a display voltage regulation circuit (13) and a second protection resistor (32), wherein the display anode power supply pin (21) is configured to supply power to the display voltage regulation circuit (13), the second protection resistor (32) is disposed between the display anode power supply pin (21) and the display voltage regulation circuit (13), and the signal generation unit (2) is configured to supply power to the display control circuit (12) through the control circuit power supply pin (23).

3. The display device according to claim 2, characterized in that, The signal generating unit (2) is electrically connected to the display panel (1) via a flexible circuit board (6), and the first protection resistor (31) and / or the second protection resistor (32) are configured to be formed on the flexible circuit board (6).

4. The display device according to claim 2, characterized in that, The resistance value of the first protective resistor (31) is in the range of 100Ω-500Ω, preferably, the resistance value of the first protective resistor (31) is in the range of 300Ω-350Ω; And / or, the resistance value of the second protection resistor (32) is in the range of 100Ω-500Ω, preferably, the resistance value of the second protection resistor (32) is in the range of 300Ω-350Ω.

5. The display device according to claim 4, characterized in that, The power supply voltage of the display anode power supply pin (21) is 4.6V, and the power supply voltage range of the display cathode power supply pin (22) is -1.4 to -5.4V.

6. The display device according to claim 5, characterized in that, The first protection resistor (31) is configured such that during the process of the signal generating unit (2) supplying power to the display panel (1) through the display anode power supply pin (21), the maximum current passing through it is less than 20mA, preferably 13.9mA; And / or, the second protection resistor (32) is configured such that during the process of the signal generating unit (2) supplying power to the display voltage regulating circuit (13) through the display anode power supply pin (21), the maximum current passing through is less than 20mA, preferably 13.9mA.

7. The display device according to any one of claims 1 to 6, characterized in that, The signal generating unit (2) is configured to, during the power-down process, control the power supply pin (23) of the control circuit and the power supply pin (22) of the display cathode to stop supplying power to the outside, and then control the power supply pin (21) of the display anode to stop supplying power to the outside.

8. The display device according to any one of claims 1 to 6, characterized in that, It also includes: a first capacitor and a second capacitor, wherein the first capacitor is disposed between the display anode power supply pin (21) and the ground terminal (5); and the second capacitor (42) is disposed between the display cathode power supply pin (22) and the ground terminal (5).

9. The display device according to claim 8, characterized in that, The capacitance values ​​of the first capacitor (41) and the second capacitor (42) range from 2 to 10 μF. Preferably, the capacitance values ​​of the first capacitor (41) and the second capacitor (42) are 4.7 μF.

10. An electronic device, characterized in that, Includes a power supply and a display device according to any one of claims 1 to 9, wherein the power supply is configured to supply power to a signal generating unit (2) in the display device.

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