Drive and electronic equipment

Abstract

The present disclosure relates to a driving device and an electronic device, the device comprising a first voltage generating module, a voltage adjusting module, a first switch module, a first capacitor module, a first transistor module and a first light-emitting module, wherein: the first voltage generating module is used to generate a first voltage; the first switch module is used to output the first voltage to the first end of the first capacitor module in a first time period; the voltage adjusting module is used to determine a second voltage according to a change in the voltage at the first end of the first capacitor module, and output the second voltage to the second end of the first capacitor module in a second time period; the first transistor module is used to drive the first light-emitting module to emit light using the voltage at the first end of the first capacitor module. Through the above device, the embodiment of the present disclosure can compensate and adjust the leakage in the device to solve the flickering problem of the first light-emitting module.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a driving device and an electronic device. Background Art

[0002] With the continuous development of science and technology and the continuous improvement of people's living standards, various types of electronic devices with display functions are becoming more and more popular. However, the display panels in current electronic devices have flickering problems caused by leakage problems of various components of the display panels themselves, which not only affects the user experience, but also shortens the life of the display panel. Summary of the invention

[0003] In view of this, the present disclosure proposes a driving device, which includes a first voltage generating module, a voltage adjusting module, a first switch module, a first capacitor module, a first transistor module and a first light emitting module, wherein:

[0004] The first voltage generating module is used to generate a first voltage;

[0005] The first switch module is electrically connected to the first voltage generating module and the first capacitor module, and is used to output the first voltage to the first end of the first capacitor module in a first time period;

[0006] The voltage adjustment module is electrically connected to the second end of the first capacitor module, and is used to determine a second voltage according to a change in the voltage at the first end of the first capacitor module, and output the second voltage to the second end of the first capacitor module in a second time period to set the voltage at the first end of the first capacitor module;

[0007] The first transistor module is electrically connected to the first end of the first capacitor module and the first light-emitting module, and is used to drive the first light-emitting module to emit light using the voltage at the first end of the first capacitor module.

[0008] In a possible implementation, the first voltage generating module includes:

[0009] The first voltage generating unit is used to generate the first voltage according to the brightness information and a preset brightness-voltage relationship, wherein the preset brightness-voltage relationship includes a correlation relationship between the brightness information and the voltage.

[0010] In a possible implementation, the voltage adjustment module includes:

[0011] a current sensing unit, configured to determine a sensing current according to a change in a voltage at a first end of the first capacitor module;

[0012] A resistor unit, a first end of which is electrically connected to the current sensing unit and the second end of the first capacitor module, and a second end of which is grounded, is used to determine the second voltage according to the sensing current and the resistance of the resistor unit.

[0013] In a possible implementation, the current sensing unit includes a second voltage generating module, a second switch module, a second capacitor module, a second transistor module, a second light emitting module, an operational amplifier module, and a third transistor module, wherein:

[0014] The second voltage generating module is used to generate a first voltage;

[0015] The second switch module is electrically connected to the second voltage generating module and the second capacitor module, and is used to output the first voltage to the first end of the second capacitor module in a third time period;

[0016] The second transistor module is electrically connected to the first end of the second capacitor module and the second light-emitting module, and is used to drive the second light-emitting module to emit light using the voltage at the first end of the second capacitor module;

[0017] The operational amplifier module is electrically connected to the second voltage generating module, the first end of the second capacitor module and the third transistor module, and is used to obtain a sensing voltage according to the first voltage and the voltage of the first end of the second capacitor module, wherein the sensing voltage is a change in the voltage of the first end of the first capacitor module;

[0018] The third transistor module is electrically connected to the operational amplifier module and the first end of the resistor unit and the second end of the first capacitor module, and is used to generate the sensing current according to the sensing voltage.

[0019] In a possible implementation, the sensing voltage includes a first sensing voltage and a second sensing voltage, the sensing current includes a first sensing current and a second sensing current, the operational amplifier module includes a first operational amplifier and a second operational amplifier, the third transistor module includes a first sensing transistor and a second sensing transistor, and the device further includes a third switch module, the third switch module includes a first sensing switch and a second sensing switch, wherein,

[0020] The positive input terminal of the first operational amplifier is used to input the first voltage, the negative input terminal of the first operational amplifier is used to input the first terminal voltage of the second capacitor module, the output terminal of the first operational amplifier is electrically connected to the gate of the first sensing transistor, and outputs the first sensing voltage; the drain of the first sensing transistor is used to receive the power supply voltage, the source of the first sensing transistor is electrically connected to the first end of the first sensing switch, and is used to output the first sensing current, the second end of the first sensing switch is electrically connected to the first end of the resistance unit and the second end of the first capacitor module,

[0021] The positive input terminal of the second operational amplifier is used to input the first voltage, the negative input terminal of the second operational amplifier is used to input the first terminal voltage of the second capacitor module, the output terminal of the second operational amplifier is electrically connected to the gate of the second sensing transistor, and outputs the second sensing voltage; the drain of the second sensing transistor is used to receive the power supply voltage, the source of the second sensing transistor is electrically connected to the first end of the second sensing switch, and is used to output the second sensing current, and the second end of the second sensing switch is electrically connected to the first end of the resistance unit and the second end of the first capacitor module.

[0022] In a possible implementation, the sensing voltage includes a first sensing voltage and a second sensing voltage, the sensing current includes a first sensing current and a second sensing current, the operational amplifier module includes a first operational amplifier, and the third transistor module includes a first sensing transistor and a second sensing transistor, wherein:

[0023] The positive input terminal of the first operational amplifier is used to input the first voltage, the negative input terminal of the first operational amplifier is used to input the first terminal voltage of the second capacitor module, the output terminal of the first operational amplifier is electrically connected to the gate of the first sensing transistor, and outputs the first sensing voltage; the drain of the first sensing transistor is used to receive the power supply voltage, the source of the first sensing transistor is electrically connected to the first end of the resistance unit and the second end of the first capacitor module, and is used to output the first sensing current;

[0024] The output end of the first operational amplifier is electrically connected to the gate of the second sensing transistor and outputs the second sensing voltage; the drain of the second sensing transistor is used to receive the power supply voltage, and the source of the second sensing transistor is electrically connected to the first end of the resistance unit and the second end of the first capacitor module, and is used to output the second sensing current.

[0025] In a possible implementation, the first sensing switch is configured to be turned on when the first sensing current is a positive current, and the second sensing switch is configured to be turned on when the second sensing current is a negative current.

[0026] In a possible implementation, the first switch module includes a first switch, a first end of the first switch is used to receive the first voltage, and a second end of the first switch is electrically connected to a first end of the first capacitor module.

[0027] In a possible implementation manner, the first switch module is further configured to:

[0028] In a first time period, turning on the first switch to output the first voltage to the first end of the first capacitor module;

[0029] In the second time period, the first switch is turned off.

[0030] In a possible implementation, the second voltage generating module is a copy of the first voltage generating module, the second switch module is a copy of the first switch module, the second capacitor module is a copy of the first capacitor module, the second transistor module is a copy of the first transistor module, and the second light-emitting module is a copy of the first light-emitting module.

[0031] In a possible implementation, the first capacitor module includes:

[0032] A first capacitor, wherein the first end of the first capacitor serves as the first end of the first capacitor module and is electrically connected to the first switch module and the first transistor module, and the second end of the first capacitor serves as the second end of the first capacitor module and is electrically connected to the voltage adjustment module.

[0033] In a possible implementation, the first transistor module includes a plurality of first transistor modules, a plurality of first capacitor modules, and a plurality of first light-emitting modules; the first switch module may include a plurality of first switches; and the first voltage generating module may generate a plurality of first voltages, wherein:

[0034] The voltage generating module is further used to output a plurality of first voltages, each first voltage corresponding to each transistor module;

[0035] The voltage adjustment module is used to output the generated second voltage to the second end of each first capacitor module to compensate for the voltage at the first end of each first capacitor module.

[0036] In a possible implementation, the light emitting module includes any one or more of LCD, LED, MiniLED, MicroLED, and OLED.

[0037] According to one aspect of the present disclosure, an electronic device is provided, and the electronic device includes the driving device.

[0038] In a possible implementation, the electronic device includes a display, a smart phone, or a portable device.

[0039] Through the above device, the embodiment of the present disclosure can generate a first voltage, and output the first voltage to the first end of the first capacitor module in a first time period, and determine the second voltage according to the change in the voltage at the first end of the first capacitor module, output it to the second end of the first capacitor module, and set the voltage at the first end of the first capacitor module, so as to compensate and adjust the leakage in the device to solve the flickering problem of the first light-emitting module.

[0040] Further features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.

[0042] Figure 1 A block diagram of a driving device according to an embodiment of the present disclosure is shown.

[0043] Figure 2 A schematic diagram of a driving device according to an embodiment of the present disclosure is shown.

[0044] Figure 3 A schematic diagram of a voltage adjustment module according to an embodiment of the present disclosure is shown.

[0045] Figure 4 A schematic diagram of a driving device according to an embodiment of the present disclosure is shown.

[0046] Figure 5 A schematic diagram of a driving device according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0047] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0048] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0049] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.

[0050] See also Figure 1 , Figure 1 A block diagram of a driving device according to an embodiment of the present disclosure is shown.

[0051] like Figure 1 As shown, the device includes a first voltage generating module 10, a first switch module 20, a first capacitor module 30, a voltage adjusting module 40, a first transistor module 50 and a first light emitting module 60, wherein:

[0052] The first voltage generating module 10 is used to generate a first voltage;

[0053] The first switch module 20 is electrically connected to the first voltage generating module 10 and the first capacitor module 30, and is used to output the first voltage to the first end of the first capacitor module 30 in a first time period;

[0054] The voltage adjustment module 40 is electrically connected to the second end of the first capacitor module 30, and is used to determine a second voltage according to a change in the voltage at the first end of the first capacitor module 30, and output the second voltage to the second end of the first capacitor module 30 in a second time period to set the voltage at the first end of the first capacitor module 30;

[0055] The first transistor module 50 is electrically connected to the first end of the first capacitor module 30 and the first light emitting module 60 , and is used to drive the first light emitting module 60 to emit light using the voltage at the first end of the first capacitor module 30 .

[0056] Through the above device, the embodiment of the present disclosure can generate a first voltage, and output the first voltage to the first end of the first capacitor module in a first time period, and determine the second voltage according to the change in the voltage at the first end of the first capacitor module, output it to the second end of the first capacitor module, and set the voltage at the first end of the first capacitor module, so as to compensate and adjust the leakage in the device to solve the flickering problem of the first light-emitting module.

[0057] The device of the embodiment of the present disclosure may be various electronic devices with display functions, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to users, for example, a handheld device with wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, wireless terminals in Internet of Vehicles, etc.

[0058] In one possible implementation, the light-emitting module may include any one or more of LCD (Liquid Crystal Display), LED (Light Emitting Diode), MiniLED (Mini Light Emitting Diode), MicroLED (Micro Light Emitting Diode), and OLED (Organic Light-Emitting Diode).

[0059] It should be noted that each module in the device of the embodiment of the present disclosure can be implemented by a hardware circuit. The following is an exemplary introduction to possible implementation methods of each module in the driving device.

[0060] See also Figure 2 , Figure 2 A schematic diagram of a driving device according to an embodiment of the present disclosure is shown.

[0061] In one possible implementation, Figure 2 As shown, the first voltage generating module 10 may include:

[0062] The first voltage generating unit 110 is used to generate the first voltage Vin according to brightness information and a preset brightness-voltage relationship, wherein the preset brightness-voltage relationship includes a correlation relationship between brightness information and voltage.

[0063] In one example, the preset brightness relationship can be set in advance. For example, the correlation relationship between brightness and voltage can be set according to the type of display transistor included in the first light-emitting module. Different preset brightness-voltage relationships can be set for different first light-emitting modules. Of course, the preset brightness relationship can be in the form of a table or other forms, which is not limited to the embodiments of the present disclosure.

[0064] The embodiments of the present disclosure do not limit the specific preset brightness relationship, nor do they limit the type of the first light-emitting module, and those skilled in the art can set it as needed.

[0065] In one example, the first voltage generating unit may include a plurality of resistors connected in series, and different first voltages may be determined by dividing the power supply voltage by the plurality of resistors.

[0066] Of course, the above description of the first voltage generating unit is exemplary, and the present disclosure does not limit the specific implementation of the first voltage generating unit. Those skilled in the art can select a voltage generating device in the relevant technology (such as an AC / DC conversion device, a DC / DC conversion device) to implement it as needed.

[0067] In one example, the first voltage generating module may include a storage unit (not shown) for storing a preset brightness relationship or other data generated by various modules of the driving device.

[0068] The storage unit can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0069] In one possible implementation, Figure 2 As shown, the first switch module 20 may include a first switch S1 , a first end of the first switch S1 is used to receive the first voltage Vin, and a second end of the first switch S1 is electrically connected to a first end of the first capacitor module 30 .

[0070] In a possible implementation manner, the first switch module is further configured to:

[0071] In a first time period, turning on the first switch to output the first voltage to the first end of the first capacitor module;

[0072] In the second time period, the first switch is turned off.

[0073] In an example, the first time period may be set as required, and the second time period may be a time period after the first time period has been timed out.

[0074] It should be noted that in the driving device, the amount of leakage of the capacitor module and the transistor module is positively correlated (proportional) to the length of the first time period. For example, the change in the voltage at the first end of the first capacitor module is Wherein, IOFF represents the magnitude of the leakage current, T represents the duration of the first time period, and CS represents the capacitance of the first capacitor module. It can be seen that the change amount is correlated with the duration.

[0075] When different lengths of the first time period are set, the magnitude of the leakage has different values, the second voltage generated by the voltage adjustment module also has different values, the second voltage is correlated with the magnitude of the leakage, and the second voltage is also correlated with the length of the first time period.

[0076] In one possible implementation, Figure 2 As shown, the first capacitor module 30 may include:

[0077] The first capacitor C1 has a first end which serves as the first end of the first capacitor module 30 and is electrically connected to the first switch module 20 and the first transistor module 50 , and a second end which serves as the second end of the first capacitor module 30 and is electrically connected to the voltage adjustment module 40 .

[0078] In a possible implementation, the first transistor module 50 may include at least one transistor, and the type of the transistor may be an NMOS transistor, a PMOS transistor, or the like.

[0079] The first transistor module 50 may serve as a driving stage of the first light emitting module 60 to drive the first light emitting module to emit light.

[0080] In a possible implementation, leakage may occur in the first capacitor module and the first transistor module in the driving device. For example, assuming that the first transistor module contains a PMOS transistor, leakage of the PMOS transistor will cause the voltage at the first end of the first capacitor module to increase; assuming that the first transistor module contains an NMOS transistor, leakage of the NMOS transistor will cause the voltage at the first end of the first capacitor module to decrease; leakage of the capacitor in the first capacitor module will cause the voltage of the first capacitor module to decrease. On the one hand, if leakage causes the voltage at the first end of the first capacitor module to decrease, it will cause loss of the first voltage generated by the first voltage generating unit. If the light-emitting module is still driven after the transistor module is turned on with the first voltage, it will cause insufficient light brightness and abnormal display of the light-emitting module. On the other hand, if leakage causes the voltage at the first end of the first capacitor module to increase, the light-emitting module will emit a brightness higher than expected, causing the light-emitting module to flicker. More seriously, it may cause damage to the light-emitting module, affecting the user experience.

[0081] In one possible implementation, Figure 2 As shown, the voltage adjustment module 40 may include:

[0082] A current sensing unit 410, configured to determine a sensing current according to a change in a voltage at a first end of the first capacitor module 30;

[0083] The resistor unit 420 has a first end electrically connected to the second end of the current sensing unit 410 and the first capacitor module 30 , and a second end of the resistor unit 420 is grounded, for determining the second voltage according to the sensing current and the resistance of the resistor unit 420 .

[0084] The embodiment of the present disclosure can use a current sensing unit to determine a sensing current according to a change in voltage at the first end of the first capacitor module, and use a resistance unit to determine the second voltage according to the sensing current and the resistance of the resistance unit, thereby compensating for leakage.

[0085] See also Figure 3 , Figure 3 A schematic diagram of a voltage adjustment module according to an embodiment of the present disclosure is shown.

[0086] In one possible implementation, Figure 3 As shown, the current sensing unit 410 may include a second voltage generating module 81, a second switch module 82, a second capacitor module 83, a second transistor module 84, a second light emitting module 85, an operational amplifier module 86, and a third transistor module 87, wherein:

[0087] The second voltage generating module 81 is used to generate a first voltage Vin;

[0088] The second switch module 82 is electrically connected to the second voltage generating module 81 and the second capacitor module 83, and is used to output the first voltage to the first end of the second capacitor module 83 in a third time period;

[0089] The second transistor module 84 is electrically connected to the first end of the second capacitor module 83 and the second light emitting module 85, and is used to drive the second light emitting module 85 to emit light using the voltage at the first end of the second capacitor module 83;

[0090] The operational amplifier module 86 is electrically connected to the second voltage generating module 81, the first end of the second capacitor module 83 and the third transistor module 87, and is used to obtain a sensing voltage according to the first voltage Vin and the voltage of the first end of the second capacitor module 83, wherein the sensing voltage is a change in the voltage of the first end of the first capacitor module 30;

[0091] The third transistor module 87 is electrically connected to the operational amplifier module 86 , the first end of the resistor unit 420 , and the second end of the first capacitor module 30 , and is used to generate the sensing current according to the sensing voltage.

[0092] In a possible implementation, the second voltage generating module is a copy of the first voltage generating module, the second switch module is a copy of the first switch module, the second capacitor module is a copy of the first capacitor module, the second transistor module is a copy of the first transistor module, and the second light-emitting module is a copy of the first light-emitting module.

[0093] The disclosed embodiment obtains a second voltage generating module, a second switch module, a second capacitor module, a second transistor module, and a second light-emitting module by duplicating the first voltage generating module, the first switch module, the first capacitor module, the first transistor module, and the first light-emitting module in the driving device, so as to obtain the voltage change at the first end of the first capacitor module, thereby sensing the leakage amount and obtaining the corresponding second voltage to compensate for the leakage amount, thereby effectively solving the flickering problem of the light-emitting module.

[0094] The "replication" of each module mentioned in the embodiment of the present disclosure may refer to the batch production of each module through industrial manufacturing. For example, in manufacturing, the same or similar modules are produced by setting the same parameters, using the same raw materials, and using the same manufacturing equipment to perform the same process.

[0095] Based on the above settings, the embodiment of the present disclosure can utilize the second voltage generating module in the voltage adjustment module to generate the first voltage, and output the first voltage to the first end of the second capacitor module through the second switch module in a third time period (the same length as the first time period). When the timing of the third time period ends, the second switch module can disconnect the electrical connection between the second voltage generating module and the second capacitor module. At this time, the leakage of the second capacitor module and / or the third transistor module affects the voltage of the first end of the second capacitor module. The operational amplifier module obtains the voltage of the first end of the second capacitor module and the first voltage, and can obtain the change in the voltage of the first end of the second capacitor module, which is equivalent to the change in the voltage of the first end of the first capacitor module.

[0096] In a possible implementation, the sensing voltage may include a first sensing voltage and a second sensing voltage, and the sensing current may include a first sensing current and a second sensing current.

[0097] In a possible implementation, Figure 3 As shown, the operational amplifier module 86 may include a first operational amplifier A1 and a second operational amplifier A2, the third transistor module 87 may include a first sensing transistor Q1 and a second sensing transistor Q2, and the device may further include a third switch module 88, and the third switch module may include a first sensing switch S2 and a second sensing switch S3, wherein,

[0098] The positive input terminal of the first operational amplifier A1 is used to input the first voltage Vin, the negative input terminal of the first operational amplifier A1 is used to input the first terminal voltage of the second capacitor module 83, the output terminal of the first operational amplifier A1 is electrically connected to the gate of the first sensing transistor Q1, and outputs the first sensing voltage; the drain of the first sensing transistor Q1 is used to receive the power supply voltage VDD, the source of the first sensing transistor Q1 is electrically connected to the first end of the first sensing switch S2, and is used to output the first sensing current, the second end of the first sensing switch S2 is electrically connected to the first end (exemplarily, the first end of the resistor R1) of the resistor unit 420 (exemplarily, the resistor unit 420 includes the resistor R1) and the second end of the first capacitor module 30,

[0099] The positive input terminal of the second operational amplifier A2 is used to input the first voltage Vin, the negative input terminal of the second operational amplifier A2 is used to input the first terminal voltage of the second capacitor module 83, the output terminal of the second operational amplifier A2 is electrically connected to the gate of the second sensing transistor Q2, and outputs the second sensing voltage; the drain of the second sensing transistor Q2 is used to receive the power supply voltage NVDD, the source of the second sensing transistor Q2 is electrically connected to the first end of the second sensing switch S3, and is used to output the second sensing current, and the second end of the second sensing switch S3 is electrically connected to the first end (exemplarily, the first end of the resistor R1) of the resistance unit 420 (exemplarily, the resistance unit 420 includes the resistor R1) and the second end of the first capacitor module 30.

[0100] In one example, the first sensing transistor Q1 may be a PMOS transistor.

[0101] In one example, the second sensing transistor Q2 may be an NMOS transistor.

[0102] In a possible implementation, the first sensing switch is configured to be turned on when the first sensing current is a positive current, and the second sensing switch is configured to be turned on when the second sensing current is a negative current.

[0103] In one example, when the transistor type in the first transistor module is a PMOS transistor, the first transistor module leaks to the first capacitor module. In this case, the voltage at the first end of the first capacitor module increases. Assuming that the first voltage is 5V, the holding time is 1 second, the voltage change ΔV at the first end of the first capacitor module is 0.5V, and the voltage at the first end of the first capacitor module is 5.5V; the second sensing transistor Q2 can obtain a sensing current of -5μA when the holding time is 1 second. Since the second sensing current is a negative value, the second sensing switch S3 is turned on at this time, and the second sensing current is output to the second end of the resistor unit. Assuming that the resistance of the resistor unit is 0.1MΩ, the second voltage obtained by the voltage adjustment module is -0.5V. The second voltage is output to the second end of the first capacitor module, and the voltage at the first end of the first capacitor module can be reduced to 5V, thereby achieving compensation for leakage to solve the flicker problem.

[0104] In one example, when the transistor type in the first transistor module is an NMOS transistor, the first capacitor module leaks to the first transistor module, and the first capacitor module itself also has leakage. In this case, the voltage at the first end of the first capacitor module decreases. Assuming that the first voltage is 5V, the holding time is 1 second, the voltage change ΔV at the first end of the first capacitor module is -0.5V, and the voltage at the first end of the first capacitor module is 4.5V; the first sensing transistor Q1 can obtain a sensing current of 5μA when the holding time is 1 second. Since the first sensing current is a positive value, the first sensing switch S1 is turned on at this time, and the first sensing current is output to the second end of the resistor unit. Assuming that the resistance of the resistor unit is 0.1MΩ, the second voltage obtained by the voltage adjustment module is 0.5V. The second voltage is output to the second end of the first capacitor module, and the voltage at the first end of the first capacitor module can be increased to 5V, thereby realizing compensation for leakage to improve the flicker phenomenon.

[0105] The above describes the use of the third switch module to output the sensing current to the first end of the resistance unit, but the present disclosure is not limited to this. Since the first sensing transistor and the second sensing transistor are different types of transistors, the two will not be turned on at the same time. In this case, the third switch module can be removed, and an exemplary introduction will be given below.

[0106] See also Figure 4 , Figure 4 A schematic diagram of a driving device according to an embodiment of the present disclosure is shown.

[0107] In one possible implementation, Figure 4 As shown, the operational amplifier module may only include the first operational amplifier A1, but not include Figure 3 The second operational amplifier A2 shown in the figure, the present disclosure can also output the sensing voltage to two sensing transistors through an operational amplifier to obtain the sensing current,

[0108] In one example, the positive input terminal of the first operational amplifier A1 is used to input the first voltage Vin, the negative input terminal of the first operational amplifier A1 is used to input the first terminal voltage of the second capacitor module, the output terminal of the first operational amplifier A1 is electrically connected to the gate of the first sensing transistor Q1, and outputs the first sensing voltage; the drain of the first sensing transistor Q1 is used to receive the power supply voltage VDD, the source of the first sensing transistor Q1 is electrically connected to the first end of the resistance unit 420 and the second end of the first capacitor module 30, and is used to output the first sensing current.

[0109] In one example, if the voltage at the first end of the first capacitor module decreases due to leakage, the first operational amplifier A1 will sense a positive voltage change. At this time, the first sensing transistor is turned on, the second sensing transistor is turned off, and the first sensing transistor outputs a positive first sensing current to the first end of the resistor unit 420.

[0110] In one example, the output end of the first operational amplifier A1 is electrically connected to the gate of the second sensing transistor Q2, and outputs the second sensing voltage; the drain of the second sensing transistor Q2 is used to receive the power supply voltage NVDD, and the source of the second sensing transistor is electrically connected to the first end of the resistance unit and the second end of the first capacitor module, and is used to output the second sensing current.

[0111] In one example, if the voltage at the first end of the first capacitor module increases due to leakage, the first operational amplifier A1 will sense a negative voltage change. At this time, the second sensing transistor is turned on, the first sensing transistor is turned off, and the second sensing transistor outputs a negative second sensing current to the first end of the resistor unit 420.

[0112] See also Figure 5 , Figure 5 A schematic diagram of a driving device according to an embodiment of the present disclosure is shown.

[0113] In a possible implementation, Figure 5 As shown, the device may include multiple first transistor modules 50, multiple first capacitor modules 30, multiple first light-emitting modules 60, the first switch module 20 may include multiple first switches (S11~S1K, K is an integer greater than 1), and the first voltage generating module 10 may generate multiple first voltages (Vin1~VinkK).

[0114] Wherein, the voltage generating module is further used to output a plurality of first voltages, each first voltage corresponding to each transistor module;

[0115] The voltage adjustment module 40 may output the generated second voltage to the second end of each first capacitor module 30 to compensate for the voltage at the first end of each first capacitor module 30 .

[0116] Regarding the connection relationship between the voltage generating module, the switch module, the capacitor module and other modules in the above device, please refer to the above description and will not be repeated here.

[0117] Through the above configuration, the embodiment of the present disclosure can increase the applicability of the driving device, perform adaptive voltage compensation for multiple transistors on the display panel, improve the flicker problem of each light-emitting module, and thus improve the display effect of the entire display panel.

[0118] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A driving device, characterized in that: The device comprises a first voltage generating module, a voltage adjusting module, a first switch module, a first capacitor module, a first transistor module and a first light emitting module, wherein: The first voltage generating module is used to generate a first voltage; The first switch module is electrically connected to the first voltage generating module and the first capacitor module, and is used to output the first voltage to the first end of the first capacitor module in a first time period; The voltage adjustment module is electrically connected to the second end of the first capacitor module, and is used to determine a second voltage according to a change in the voltage at the first end of the first capacitor module, and output the second voltage to the second end of the first capacitor module in a second time period to set the voltage at the first end of the first capacitor module; The first transistor module is electrically connected to the first end of the first capacitor module and the first light-emitting module, and is used to drive the first light-emitting module to emit light using the voltage at the first end of the first capacitor module. The voltage adjustment module includes: a current sensing unit, which is used to determine the sensing current according to the change in the voltage at the first end of the first capacitor module; a resistor unit, whose first end is electrically connected to the current sensing unit and the second end of the first capacitor module, and the second end of the resistor unit is grounded, and is used to determine the second voltage according to the sensing current and the resistance of the resistor unit. The current sensing unit includes a second voltage generating module, a second switch module, a second capacitor module, a second transistor module, a second light-emitting module, an operational amplifier module, and a third transistor module. The second voltage generating module is used to generate the first voltage. The second switch module is electrically connected to the The second voltage generating module and the second capacitor module are used to output the first voltage to the first end of the second capacitor module in a third time period; the second transistor module is electrically connected to the first end of the second capacitor module and the second light-emitting module, and is used to drive the second light-emitting module to emit light using the voltage at the first end of the second capacitor module; the operational amplifier module is electrically connected to the second voltage generating module, the first end of the second capacitor module and the third transistor module, and is used to obtain a sensing voltage according to the first voltage and the voltage at the first end of the second capacitor module, and the sensing voltage is the change in the voltage at the first end of the first capacitor module; the third transistor module is electrically connected to the operational amplifier module, the first end of the resistor unit and the second end of the first capacitor module, and is used to generate the sensing current according to the sensing voltage, The first voltage generating module includes: a first voltage generating unit, used to generate the first voltage according to brightness information and a preset brightness-voltage relationship, wherein the preset brightness-voltage relationship includes an association between brightness information and voltage, and the preset brightness-voltage relationship is set according to the type of display transistor included in the first light-emitting module.

2. The device according to claim 1, characterized in that The sensing voltage includes a first sensing voltage and a second sensing voltage, the sensing current includes a first sensing current and a second sensing current, the operational amplifier module includes a first operational amplifier and a second operational amplifier, the third transistor module includes a first sensing transistor and a second sensing transistor, and the device further includes a third switch module, the third switch module includes a first sensing switch and a second sensing switch, wherein, The positive input terminal of the first operational amplifier is used to input the first voltage, the negative input terminal of the first operational amplifier is used to input the first terminal voltage of the second capacitor module, the output terminal of the first operational amplifier is electrically connected to the gate of the first sensing transistor, and outputs the first sensing voltage; the drain of the first sensing transistor is used to receive the power supply voltage, the source of the first sensing transistor is electrically connected to the first end of the first sensing switch, and is used to output the first sensing current, the second end of the first sensing switch is electrically connected to the first end of the resistance unit and the second end of the first capacitor module, The positive input terminal of the second operational amplifier is used to input the first voltage, the negative input terminal of the second operational amplifier is used to input the first terminal voltage of the second capacitor module, the output terminal of the second operational amplifier is electrically connected to the gate of the second sensing transistor, and outputs the second sensing voltage; the drain of the second sensing transistor is used to receive the power supply voltage, the source of the second sensing transistor is electrically connected to the first end of the second sensing switch, and is used to output the second sensing current, and the second end of the second sensing switch is electrically connected to the first end of the resistance unit and the second end of the first capacitor module.

3. The device according to claim 1, characterized in that The sensing voltage includes a first sensing voltage and a second sensing voltage, the sensing current includes a first sensing current and a second sensing current, the operational amplifier module includes a first operational amplifier, and the third transistor module includes a first sensing transistor and a second sensing transistor, wherein: The positive input terminal of the first operational amplifier is used to input the first voltage, the negative input terminal of the first operational amplifier is used to input the first terminal voltage of the second capacitor module, the output terminal of the first operational amplifier is electrically connected to the gate of the first sensing transistor, and outputs the first sensing voltage; the drain of the first sensing transistor is used to receive the power supply voltage, the source of the first sensing transistor is electrically connected to the first end of the resistance unit and the second end of the first capacitor module, and is used to output the first sensing current; The output end of the first operational amplifier is electrically connected to the gate of the second sensing transistor and outputs the second sensing voltage; the drain of the second sensing transistor is used to receive the power supply voltage, and the source of the second sensing transistor is electrically connected to the first end of the resistance unit and the second end of the first capacitor module, and is used to output the second sensing current.

4. The device according to claim 2 or 3, characterized in that The first sensing switch is used to be turned on when the first sensing current is a positive current, and the second sensing switch is used to be turned on when the second sensing current is a negative current.

5. The device according to claim 1, characterized in that The first switch module includes a first switch, a first end of the first switch is used to receive the first voltage, and a second end of the first switch is electrically connected to a first end of the first capacitor module.

6. The device according to claim 5, characterized in that The first switch module is also used for: In a first time period, turning on the first switch to output the first voltage to the first end of the first capacitor module; In the second time period, the first switch is turned off.

7. The device according to claim 1, characterized in that The second voltage generating module is a copy of the first voltage generating module, the second switch module is a copy of the first switch module, the second capacitor module is a copy of the first capacitor module, the second transistor module is a copy of the first transistor module, and the second light emitting module is a copy of the first light emitting module.

8. The device according to claim 1, characterized in that The first capacitor module includes: A first capacitor, wherein the first end of the first capacitor serves as the first end of the first capacitor module and is electrically connected to the first switch module and the first transistor module, and the second end of the first capacitor serves as the second end of the first capacitor module and is electrically connected to the voltage adjustment module.

9. The device according to claim 1, characterized in that The first transistor module includes a plurality of first transistor modules, a plurality of first capacitor modules, and a plurality of first light-emitting modules. The first switch module may include a plurality of first switches. The first voltage generating module may generate a plurality of first voltages. The voltage generating module is further used to output a plurality of first voltages, each first voltage corresponding to each transistor module; The voltage adjustment module is used for outputting the generated second voltage to the second end of each first capacitor module to compensate for the voltage at the first end of each first capacitor module.

10. The device according to claim 1, characterized in that The light emitting module includes any one or more of LCD, LED, MiniLED, MicroLED, and OLED.

11. An electronic device, characterized in that: The electronic device comprises the driving device according to any one of claims 1 to 10.

12. The electronic device according to claim 11, characterized in that: The electronic device includes a display, a smart phone or a portable device.

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