CN208835727U - Current limiting circuit and current limiting device - Google Patents
Current limiting circuit and current limiting device Download PDFInfo
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- CN208835727U CN208835727U CN201821431391.2U CN201821431391U CN208835727U CN 208835727 U CN208835727 U CN 208835727U CN 201821431391 U CN201821431391 U CN 201821431391U CN 208835727 U CN208835727 U CN 208835727U
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Abstract
The utility model belongs to the technical field of electronics, and mainly provides a current circuit and a current limiting device for a boost chip, wherein, the current limiting circuit is connected with the boost chip and a power management chip, a first current signal output by the power management chip is processed by a current detecting module and a first voltage signal is output, a current limiting setting module processes the first voltage signal and outputs a second current signal to the boost chip, so that the boost chip can adjust the internal current limiting setting value according to the first current signal output by the power management chip, the chip is closed in time when the output current of the boost chip and the power management chip is overlarge, the display panel is prevented from being burnt due to overcurrent, the problem that the overcurrent protection circuit adopted by the boost chip and the power management chip often causes the panel to be burnt due to the fact that the corresponding current output cannot be cut off in time is solved, has great potential safety hazard.
Description
Technical field
The utility model belongs to electronic technology field more particularly to a kind of current-limiting circuit and current-limiting apparatus.
Background technique
Liquid crystal display panel is usually integrated on a display panel by door driving chip, and this design method significantly limits
The reduction of display frame, in order to reduce the frame of display, existing display generallys use a kind of no gate driver
(Gate driver less, GDL) framework, GDL circuit is that door driving chip is split as boost chip and shift register core
Boost chip is integrated in driving plate by piece, and shift register integrated chip on a display panel, is exported high by boost chip
Pressure logical signal completes display driving to shift register chip, to further compress frame length.Due to producing work
Uncontrollable factor in skill is likely to result in the operation irregularity of display pannel, in order to avoid boost chip and power management chip
Output electric current it is excessive and burn display panel, protection mechanism usually is arranged to boost chip and power management chip so that
The current signal of boost chip output closes the electric current output of boost chip, or the electricity in power management chip output when excessive
The electric current output of power management chip is closed when stream signal is excessive.
However, current foldback circuit used by boost chip and power management chip often due to that can not turn off pair in time
The case where electric current answered exports and panel is caused to burn has great security risk.
Utility model content
The utility model provides a kind of current circuit and current-limiting apparatus for boost chip, it is intended to solve existing liter
Current foldback circuit used by pressure chip and power management chip often due to can not turn off the output of corresponding electric current in time and
The case where causing panel to burn has the problem of great security risk.
The utility model proposes a kind of current-limiting circuits, connect with boost chip and power management chip, the current limliting
Circuit includes:
It is connect with the power management chip, for receiving the first current signal of the power management chip output, and
First current signal is converted to the current detecting module of corresponding first voltage signal；
It is connect with the current detecting module and the boost chip, for receiving the first voltage signal, and it is defeated
The current limliting setting module of the second current signal of Current limited Control is carried out to the current output signal of the boost chip out.
Optionally, the current detecting module includes:
It is connect with the power management chip, for being detected to first current signal, and according to described first
The current detecting unit of current signal output the first detectable voltage signals and the second detectable voltage signals；
It is connect with the current detecting unit, for receiving first detectable voltage signals and the second detection voltage
Signal, and put according to the operation of first detectable voltage signals and second detectable voltage signals output first voltage signal
Big unit.
Optionally, the current limliting setting module includes:
It connect with the current detecting module, believes for receiving the first voltage signal, and according to the first voltage
Number output second voltage signal partial pressure unit；
It is connect with the partial pressure unit, for receiving the second voltage signal, and it is defeated according to the second voltage signal
The resistance unit of second current signal out.
To solve the above-mentioned problems, the utility model also proposed a kind of current-limiting apparatus, including boost chip and power supply pipe
Manage chip, the current-limiting apparatus includes current-limiting circuit as described in any one of the above embodiments, be provided in the boost chip for pair
The current output signal of the boost chip carries out the Internal current limit setting module of Current limited Control.
Optionally, the Internal current limit setting module is exported using electric current of the Internal current limit setting value to the boost chip
Signal carries out Current limited Control, and the Internal current limit setting value is configured according to second current signal.
In a kind of current circuit and current-limiting apparatus for boost chip provided by the embodiment of the utility model, current limliting electricity
Road is connect with boost chip and power management chip, the first current signal exported by current detecting module power management chip
First voltage signal is handled and is exported, current limliting setting module is defeated to boost chip after handling the first voltage signal
Second current signal out sets boost chip to Internal current limit according to the first current signal that power management chip exports
Definite value is adjusted, and realizes and closes chip in time when the output electric current of boost chip and power management chip is excessive, avoids
Display panel is burnt due to overcurrent, solves current foldback circuit used by boost chip and power management chip frequent
Since the case where corresponding electric current exports and panel is caused to burn can not be turned off in time, there is the problem of great security risk.
Detailed description of the invention
Fig. 1 for no gate driver GDL framework display structural schematic diagram；
Fig. 2 is a kind of modular structure signal of current circuit for boost chip provided by the embodiment of the utility model
Figure；
Fig. 3 is a kind of cellular construction signal of current circuit for boost chip provided by the embodiment of the utility model
Figure；
Fig. 4 is a kind of circuit structure signal of current circuit for boost chip provided by the embodiment of the utility model
Figure.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.Meanwhile term " first ", " second " in the description of the present invention,
It is described etc. being only used for distinguishing, is not understood to indicate or imply relative importance.
It should be appreciated that ought use in this specification and in the appended claims, term " includes " instruction is described special
Sign, entirety, step, operation, the presence of element and/or component, but be not precluded one or more of the other feature, entirety, step,
Operation, the presence or addition of element, component and/or its set.
It is also understood that mesh of the term used in this present specification merely for the sake of description specific embodiment
And be not intended to limit the application.As present specification and it is used in the attached claims, unless on
Other situations are hereafter clearly indicated, otherwise " one " of singular, "one" and "the" are intended to include plural form.
It will be further appreciated that the term "and/or" used in present specification and the appended claims is
Refer to any combination and all possible combinations of one or more of associated item listed, and including these combinations.
In order to illustrate the above-mentioned technical solution of the application, the following is a description of specific embodiments.
In no gate driver GDL framework, GDL circuit is that door driving chip (gate IC) is split as boost chip
(level shifter IC) and shift register (shift register) two parts, Fig. 1 are aobvious for no gate driver GDL framework
Show the structural schematic diagram of device, as shown in Figure 1, boost chip is integrated in driving plate, driving plate is by multiple driving pins and shows
Show that device connects, for the pin 1 of example as shown in figure 1 to pin 12, shift register integrated chip on a display panel, passes through boost chip
High pressure logical signal is exported to shift register chip to complete display driving, so that frame length is further compressed, so that
Effective display area on display pannel can be continuously increased.
Overcurrent protection mechanism is provided with inside boost chip and power management chip in the utility model embodiment, electricity
Source control chip is used to the voltage that power supply exports being converted to various types of voltage signals, such as: it is used for conducting membrane crystal
Cut-in voltage signal VGH, the shutdown voltage signal VGL for turning off TFT etc. of (Thin Film Transistor, TFT) are managed,
Boost chip is commonly used in being converted to low voltage logic signal into the logical signal of high pressure.Overcurrent protection mechanism inside boost chip
For the Internal current limit setting module for carrying out Current limited Control for the current output signal to boost chip, Internal current limit setting module
It is controlled according to current output signal of the Internal current limit setting value to output, which can be according to user's need
It is adjusted, for example, accessing a plug-in resistance by an external pin to set specific current value, external setting-up electricity
Resistance is bigger, then Internal current limit setting value is with regard to smaller.
Fig. 2 is a kind of modular structure signal of current circuit for boost chip provided by the embodiment of the utility model
Figure, as shown in Fig. 2, the current-limiting circuit in the present embodiment, connect, wherein current limliting with boost chip 20 and power management chip 10
Circuit includes: to connect with power management chip 10, for receiving the first current signal of the output of power management chip 10, and should
First current signal is converted to the current detecting module 30 of corresponding first voltage signal；With current detecting module 30 and boosting
Chip 20 connects, and for receiving first voltage signal, and exports and carries out Current limited Control to the current output signal of boost chip 20
The second current signal current limliting setting module 40.
In the present embodiment, boost chip 20 is internally provided with Internal current limit setting module, the Internal current limit setting module
It is provided with Internal current limit setting value, when the high pressure logical signal that boost chip 20 exports is more than Internal current limit setting value, boosting
Chip 20 stops output high pressure logical signal.The Internal current limit setting value of boost chip 20 can be configured and adjust as needed
Section.The first current signal that current detecting module 30 exports power management chip 10 detects, and according to first electric current
Signal exports corresponding first voltage signal, and current limliting setting module 40 is generated according to the first voltage signal for adjusting boosting core
Second current signal of the Internal current limit setting value in piece 20, for example, when the first current signal of the output of power management chip 10
When excessive, current detecting module 30 similarly increases according to the first voltage signal that first current signal exports, at this point, current limliting
The Internal current limit setting value for the second current signal control boost chip 20 that setting module 40 is generated according to the first voltage signal
It reduces, so that the first current signal of the output of power management chip 10 reduces the overcurrent turn-off function of boost chip 20 while excessive
Value, which is the Internal current limit setting value of boost chip 20, reaches power management chip 10 and boost chip 20
The effect of output electric current is simultaneously closed off when output electric current is excessively high.
As an embodiment of the present invention, Fig. 3 is provided by the embodiment of the utility model a kind of for boost chip
The cellular construction schematic diagram of current circuit is used as shown in figure 3, current detecting module 30 includes: to connect with power management chip 10
The first detectable voltage signals are exported in the first current signal that detection power management chip 10 exports, and according to the first current signal
With the current detecting unit 301 of the second detectable voltage signals；It is connect with current detecting unit 301, for receiving the first detection electricity
Signal and the second detectable voltage signals are pressed, and export first voltage according to the first detectable voltage signals and the second detectable voltage signals
The operation amplifier unit 302 of signal.
In the present embodiment, the resistance value of current detecting unit 301 can need to set preset resistance value according to user,
The first detectable voltage signals, the second detectable voltage signals that operation amplifier unit 302 can be exported according to current detecting unit 301
And the resistance value of the current detecting unit 301 of user preset obtains the electricity for the first current signal that power management chip 10 exports
Flow valuve, and export corresponding first voltage signal.
As an embodiment of the present invention, Fig. 4 is provided by the embodiment of the utility model a kind of for boost chip
The electrical block diagram of current circuit, as shown in figure 4, current detecting unit 301 includes: first resistor R1；Specifically, first
The first end of resistance R1 is connect as the first end of current detecting unit 301 with power management chip 10, and the of first resistor R1
Second end of two ends as current detecting unit 301.In the present embodiment, first end output the first detection electricity of first resistor R1
Signal is pressed, the second end of first resistor R1 exports the second detectable voltage signals.
As an embodiment of the present invention, current detecting unit 301 can also include first resistor R1 and inductive reactance
The resistance value of the series circuit of formation, first resistor R1 and inductive reactance is it is known that simultaneously, the first end and second end of first resistor R1
Respectively as the first end and second end of current detecting unit 301.
As an embodiment of the present invention, referring to fig. 4, operation amplifier unit 302 includes: second resistance R2, third electricity
Hinder R3, the 4th resistance R4, the 8th resistance R8 and operational amplifier U1；Specifically, the first end of second resistance R2 is as operation
The first detectable voltage signals input terminal of amplifying unit U1 is connect with current detecting unit 301, the second end of second resistance R2,
The first end of three resistance R3 and the normal phase input end (+) of operational amplifier U1 connect altogether, the second end ground connection of 3rd resistor R3, the
The first end of four resistance R4 connects as the second detectable voltage signals input terminal and current detecting unit 301 of operation amplifier unit U1
It connects, second end, the first end of the 8th resistance R8 and the negative-phase input of operational amplifier U1 of the 4th resistance R4 connects altogether, operation
The second end of the output end of amplifier U1 and the 8th resistance R8 connect the first voltage signal output as operation amplifier unit 302 altogether
End.
As an embodiment of the present invention, the resistance value of second resistance R2 is identical as the resistance value of 3rd resistor R3.
As an embodiment of the present invention, the output signal of the operational amplifier U1 in the present embodiment is inputted with two
The signal voltage difference at end is directly proportional, i.e. output voltage Vout=A0* (V+-V-), specifically, V+ is the positive of operational amplifier U1
The signal voltage of input terminal input, V- are the signal voltage of reverse input end input, and A0 is the low-frequency gain of operational amplifier U1.
In this example, it is assumed that the voltage value of the first detectable voltage signals of the first end of first resistor R1 is V1, the second detection electricity
The voltage value for pressing signal is V2, and the low-frequency gain of operational amplifier U1 is 1, i.e. A0=1, the normal phase input end of operational amplifier U1
The voltage signal of input is that the first detectable voltage signals obtain after second resistance R2 and 3rd resistor R3 partial pressure, wherein
Second resistance R2 is identical with the voltage value of 3rd resistor R3, and the 4th resistance R4 is identical as the resistance value of the 8th resistance R8, then operation is put
The voltage of the negative-phase input input of the voltage signal V+=(V1)/2 of the normal phase input end input of big device U1, operational amplifier U1
Signal V-=V2- (V2-Vout)/2=(V2+Vout)/2, according to the characteristic V+=V- of operational amplifier, so there is (V1)/2=
(V2+Vout)/2, i.e. V1=V2+Vout, finally obtains Vout=V1-V2, and Vout is exactly the pressure difference of V1 and V2.
As an embodiment of the present invention, as shown in figure 3, current limliting setting module 40 includes: and current detecting module 30
Connection, for receiving first voltage signal, and according to the partial pressure unit 401 of first voltage signal output second voltage signal；With
Partial pressure unit 401 connects, for receiving second voltage signal, and according to the resistance of second voltage signal the second current signal of output
Unit 402.
As an embodiment of the present invention, referring to fig. 4, partial pressure unit 401 includes: reference voltage source Vref, the 5th electricity
Hinder R5, the 6th resistance R6 and the 7th resistance R7；The first end of 6th resistance R6 and the first end of the 7th resistance R7 connect conduct altogether
The first voltage signal input part of partial pressure unit 401 is connect with current detecting module 30, the second end ground connection of the 7th resistance R7, the
The second end of six resistance R6 and the first end of the 5th resistance R5 connect altogether second voltage signal output end as partial pressure unit 401 with
Resistance unit 402 connects, and the second end of the 5th resistance R5 is connect with reference voltage source Vref.
In the present embodiment, reference voltage source Vref by the 5th resistance R5, the 6th resistance R6 and the 7th resistance R7 into
Row electric resistance partial pressure, the output end of operational amplifier U1 are connected between the 6th resistance R6 and the 7th resistance R7, i.e. partial pressure unit 401
The voltage value of received first voltage signal be Vout, it is assumed that partial pressure unit 401 exported according to the first voltage signal second
The voltage value of voltage signal is Vs, and the resistance value of the 5th resistance R5 is R5, and the resistance value of the 6th resistance R6 is R6, then has Vs=(R6*
Vref+Vout*R5)/(R5+R6), i.e., at this point, the voltage value Vs and the voltage value of first voltage signal of second voltage signal are
Vout is directly proportional.
As an embodiment of the present invention, referring to fig. 4, resistance unit 402 be resistor U2, the resistance value of resistor U2 with
The voltage value of second voltage signal is directly proportional.
In the present embodiment, working power of the second voltage signal as resistor U2, the resistance value of resistor U2 and second
The voltage value Vs of voltage signal is directly proportional, and the voltage value Vs of second voltage signal is bigger, and the resistance value of resistor U2 is bigger, because
This, the voltage value Vs by changing second voltage signal is the resistance value of changeable resistor U2, to change the second electric current letter
Number current value, with reach change boost chip 20 Internal current limit setting value.
As an embodiment of the present invention, resistor U2 can be digital resistor, which is that number can
The resistor of tune type, resistance value is directly proportional to the voltage value of received voltage signal, i.e., the voltage value of received voltage signal
Bigger, resistance value is bigger.
In the present embodiment, when the first current signal of power management chip output increases, current detecting module 30 is defeated
The voltage value Vout of first voltage signal out increases, at this point, the voltage value Vs for the second voltage signal that partial pressure unit 401 exports
Also it will increase, the resistance value of resistor U2 also will increase, and therefore, the Internal current limit setting value of boost chip 20 reduces, inside this
Current limliting setting value is the overcurrent turn-off function value of boost chip 20, i.e. the electric current of the high pressure logical signal of the output of boost chip 20 reaches
The overcurrent turn-off function value closes output, has reached power management chip 10 and boost chip 20 when output electric current is excessively high while having closed
Close the effect of output electric current.
As an embodiment of the present invention, the present embodiment proposes a kind of current-limiting apparatus, including boost chip 20 and electricity
Source control chip 10, current-limiting apparatus include the current-limiting circuit such as any of the above-described, are provided in boost chip 20 for boosting
The current output signal of chip 20 carries out the Internal current limit setting module of Current limited Control.
As an embodiment of the present invention, Internal current limit setting module is using Internal current limit setting value to boost chip 20
Current output signal carry out Current limited Control, Internal current limit setting value is configured according to the second current signal.In the present embodiment
In the current value of the second current signal and being inversely proportional for the resistance value of resistor U2, when the resistance value of resistor U2 is bigger,
The current value of two current signals is smaller, and the Internal current limit setting value in Internal current limit setting module is with regard to smaller at this time, that is, boost core
The cut-off current achieved of piece 20 is with regard to smaller.
In a kind of current circuit and current-limiting apparatus for boost chip provided by the embodiment of the utility model, current limliting electricity
Road is connect with boost chip and power management chip, the first current signal exported by current detecting module power management chip
First voltage signal is handled and is exported, current limliting setting module is defeated to boost chip after handling the first voltage signal
Second current signal out, the first current signal that boost chip is exported according to power management chip is to its Internal current limit
The Internal current limit setting value of setting module is adjusted, and the output electric current realized in boost chip and power management chip is excessive
When close chip in time, avoid display panel and burnt due to overcurrent, solve boost chip and power management chip is adopted
Current foldback circuit often due to that can not turn off the case where corresponding electric current exports and panel is caused to burn in time, has pole
The problem of big security risk.
Embodiment described above, the only specific embodiment of the application, but the protection scope of the application is not limited to
This, anyone skilled in the art within the technical scope of the present application, can easily think of the change or the replacement,
Should all it cover within the scope of protection of this application.Therefore, the protection scope of the application answers the protection model with claim
Subject to enclosing.
Claims (10)
1. a kind of current-limiting circuit, connect with boost chip and power management chip, which is characterized in that the current-limiting circuit packet
It includes:
It is connect with the power management chip, for receiving the first current signal of power management chip output, and by institute
State the current detecting module that the first current signal is converted to corresponding first voltage signal；
It is connect with the current detecting module and the boost chip, for receiving the first voltage signal, and output pair
The current output signal of the boost chip carries out the current limliting setting module of the second current signal of Current limited Control.
2. current-limiting circuit as described in claim 1, which is characterized in that the current detecting module includes:
It is connect with the power management chip, for being detected to first current signal, and according to first electric current
The current detecting unit of signal output the first detectable voltage signals and the second detectable voltage signals；
It is connect with the current detecting unit, for receiving first detectable voltage signals and the second detection voltage letter
Number, and according to the operation amplifier of first detectable voltage signals and second detectable voltage signals output first voltage signal
Unit.
3. current-limiting circuit as claimed in claim 2, which is characterized in that the current detecting unit includes: first resistor；
The first end of the first resistor is connect as the first end of the current detecting unit with the power management chip, institute
State second end of the second end of first resistor as the current detecting unit.
4. current-limiting circuit as claimed in claim 2, which is characterized in that the operation amplifier unit includes: second resistance, third
Resistance, the 4th resistance, the 8th resistance and operational amplifier；
First detectable voltage signals input terminal and the electricity of the first end of the second resistance as the operation amplifier unit
Flow detection unit connection, the second end of the second resistance, the first end of the 3rd resistor and the operational amplifier
Normal phase input end connects altogether, and the second end ground connection of the 3rd resistor, the first end of the 4th resistance is as the operation amplifier
Second detectable voltage signals input terminal of unit is connect with the current detecting unit, the second end of the 4th resistance, described
The first end of 8th resistance and the negative-phase input of the operational amplifier connect altogether, the output end of the operational amplifier and institute
The second end for stating the 8th resistance connects first voltage signal output end as the operation amplifier unit altogether.
5. current-limiting circuit as claimed in claim 4, which is characterized in that the resistance value of the second resistance and the 3rd resistor
Resistance value is identical.
6. current-limiting circuit as described in claim 1, which is characterized in that the current limliting setting module includes:
It is connect with the current detecting module, for receiving the first voltage signal, and it is defeated according to the first voltage signal
The partial pressure unit of second voltage signal out；
It is connect with the partial pressure unit, for receiving the second voltage signal, and according to second voltage signal output the
The resistance unit of two current signals.
7. current-limiting circuit as claimed in claim 6, which is characterized in that the partial pressure unit includes: reference voltage source, the 5th electricity
Resistance, the 6th resistance and the 7th resistance；
The first end of 6th resistance and the first end of the 7th resistance connect the first voltage as the partial pressure unit altogether
Signal input part is connect with the current detecting module, the second end ground connection of the 7th resistance, and the second of the 6th resistance
The first end of end and the 5th resistance connects the second voltage signal output end and the resistance list as the partial pressure unit altogether
Member connection, the second end of the 5th resistance are connect with the reference voltage source.
8. current-limiting circuit as claimed in claim 6, which is characterized in that the resistance unit is resistor, the resistor
Resistance value is directly proportional to the voltage value of the second voltage signal.
9. a kind of current-limiting apparatus, including boost chip and power management chip, which is characterized in that the current-limiting apparatus includes as weighed
Benefit requires the described in any item current-limiting circuits of 1-8, is provided in the boost chip defeated for the electric current to the boost chip
Signal carries out the Internal current limit setting module of Current limited Control out.
10. current-limiting apparatus as claimed in claim 9, which is characterized in that the Internal current limit setting module uses Internal current limit
Setting value carries out Current limited Control to the current output signal of the boost chip, and the Internal current limit setting value is according to described second
Current signal is configured.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821431391.2U CN208835727U (en) | 2018-08-31 | 2018-08-31 | Current limiting circuit and current limiting device |
| PCT/CN2018/111484 WO2020042309A1 (en) | 2018-08-31 | 2018-10-23 | Current limiting circuit, current limiting device, and display device |
| US16/311,736 US11018500B2 (en) | 2018-08-31 | 2018-10-23 | Current-limiting circuit, current-limiting device and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821431391.2U CN208835727U (en) | 2018-08-31 | 2018-08-31 | Current limiting circuit and current limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208835727U true CN208835727U (en) | 2019-05-07 |
Family
ID=66311654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821431391.2U Active CN208835727U (en) | 2018-08-31 | 2018-08-31 | Current limiting circuit and current limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208835727U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867823A (en) * | 2019-12-21 | 2020-03-06 | 上海有个机器人有限公司 | Current self-adaptive overcurrent protection method and system based on load characteristics |
| CN112927662A (en) * | 2021-03-09 | 2021-06-08 | 重庆惠科金渝光电科技有限公司 | Driving method and driving circuit of display panel |
| CN114336502A (en) * | 2021-12-13 | 2022-04-12 | 重庆惠科金渝光电科技有限公司 | Overcurrent protection control method and gate-free driving chip |
-
2018
- 2018-08-31 CN CN201821431391.2U patent/CN208835727U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867823A (en) * | 2019-12-21 | 2020-03-06 | 上海有个机器人有限公司 | Current self-adaptive overcurrent protection method and system based on load characteristics |
| CN112927662A (en) * | 2021-03-09 | 2021-06-08 | 重庆惠科金渝光电科技有限公司 | Driving method and driving circuit of display panel |
| CN112927662B (en) * | 2021-03-09 | 2022-08-05 | 重庆惠科金渝光电科技有限公司 | Driving method and driving circuit of display panel |
| CN114336502A (en) * | 2021-12-13 | 2022-04-12 | 重庆惠科金渝光电科技有限公司 | Overcurrent protection control method and gate-free driving chip |
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