CN107528288A - The power circuit and display of a kind of display - Google Patents
The power circuit and display of a kind of display Download PDFInfo
- Publication number
- CN107528288A CN107528288A CN201710723991.XA CN201710723991A CN107528288A CN 107528288 A CN107528288 A CN 107528288A CN 201710723991 A CN201710723991 A CN 201710723991A CN 107528288 A CN107528288 A CN 107528288A
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- Prior art keywords
- circuit
- power management
- electric power
- current
- management circuit
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of power circuit of display and display.The power circuit of the display includes electric power management circuit and current foldback circuit, wherein, electric power management circuit is used for the drive circuitry for the display；Current foldback circuit couples the electric power management circuit, for detecting the output current of the electric power management circuit, controls the electric power management circuit to be stopped or reduce output in the output current exception.The power circuit of the display of the present invention on the outgoing route of electric power management circuit by setting current foldback circuit; by being detected to the output current of electric power management circuit; the working condition of electric power management circuit can be controlled in time when electric current occurs abnormal, avoid display from molten screen problem occur due to current anomaly.
Description
Technical field
The present invention relates to display technology field, in particular to the power circuit and display of a kind of display.
Background technology
The integrated level of component in display is generally higher, would generally cause to show when foreign matter occurs in display interior
Occur the situation of short circuit between each operating circuit inside device, cause the electric current on circuit excessive, cause display to melt
Screen problem, or even cause situations such as on fire, there is larger potential safety hazard.
In the prior art, the detection component for voltage typically being set to easily there is the position of short circuit, by voltage
Detecting controls the output signal of electric power management circuit, now, only when magnitude of voltage step-down or can just detect circuit when uprising
Abnormal situation, in other words, the method for detecting of the circuit abnormality of Display Technique can not find the abnormal conditions of circuit in time, still
Larger potential safety hazard be present.
The content of the invention
The present invention provides a kind of power circuit and display of display, and the power circuit of the display can pass through in time
The working condition of the testing result control electric power management circuit of electric current.
On the one hand, a technical scheme of one embodiment of the invention proposition is：A kind of power circuit of display is provided, should
Power circuit includes：
Electric power management circuit, for the drive circuitry for the display；
Current foldback circuit, the electric power management circuit and the drive circuit are coupled, for detecting the power management
The output current of circuit, the electric power management circuit is controlled to be stopped or reduce output in the output current exception.
Wherein, the current foldback circuit includes current sense subcircuit and control sub-circuit, the current detecting electricity
Road couples the output end of the electric power management circuit and the control sub-circuit, and the control sub-circuit is also coupled to the power supply pipe
Manage the Enable Pin of circuit；
Wherein, the current sense subcircuit detects that the electric current output of the output end of the electric power management circuit is exceeded
When, trigger the control sub-circuit and export low-voltage signal to the Enable Pin of the electric power management circuit.
Wherein, the current sense subcircuit includes detection resistance and photoelectrical coupler, and the detection resistance is connected on institute
State between the output end of electric power management circuit and the drive circuit, the light emitting diode that the photoelectrical coupler includes and
Phototriode, the both ends of the light emitting diode are connected in parallel on the detection resistance both ends, the output end of the phototriode
It is coupled to the control sub-circuit, optical coupling between the control terminal of the phototriode and the light emitting diode.
Wherein, the control sub-circuit includes switching tube, and the control terminal of the switching tube couples the current detecting electricity
Road, the output end of the switching tube are coupled to the Enable Pin of the electric power management circuit.
Wherein, the control sub-circuit also includes divider resistance；
The output end of the control terminal connection current sense subcircuit of the switching tube and the one of the divider resistance
End；The input of the switching tube connects the other end of the branch pressure voltage, and is grounded；The output end connection institute of the switching tube
State the Enable Pin of electric power management circuit.
Wherein, the drive circuit includes at least two in VGH drive circuits, VGL drive circuits and VCOM drive circuits
Individual drive circuit.
On the other hand, another embodiment of the present invention provides a kind of display, and the display includes：
Electric power management circuit, for the drive circuitry for the display；
Current foldback circuit, the electric power management circuit and the drive circuit are coupled, for detecting the power management
The output current of circuit, the electric power management circuit is controlled to be stopped or reduce output in the output current exception.
Wherein, the current foldback circuit includes current sense subcircuit and control sub-circuit, the current detecting electricity
Road couples the output end of the electric power management circuit and the control sub-circuit, and the control sub-circuit is also coupled to the power supply pipe
Manage the Enable Pin of circuit；
Wherein, the current sense subcircuit detects that the electric current output of the output end of the electric power management circuit is exceeded
When, trigger the control sub-circuit and export low-voltage signal to the Enable Pin of the electric power management circuit.
Wherein, the current sense subcircuit includes detection resistance and photoelectrical coupler, and the detection resistance is connected on institute
State between the output end of electric power management circuit and the drive circuit, the light emitting diode that the photoelectrical coupler includes and
Phototriode, the both ends of the light emitting diode are connected in parallel on the detection resistance both ends, the output end of the phototriode
It is coupled to the control sub-circuit, optical coupling between the control terminal of the phototriode and the light emitting diode.
Wherein, the control sub-circuit includes switching tube, and the control terminal of the switching tube couples the current detecting electricity
Road, the output end of the switching tube are coupled to the Enable Pin of the electric power management circuit.
Beneficial effect：Prior art is different from, the power circuit of the display of the embodiment of the present invention includes power management electricity
Road and current foldback circuit, wherein, electric power management circuit is used for the drive circuitry for the display；Current foldback circuit
The electric power management circuit is coupled, for detecting the output current of the electric power management circuit, in the output current exception
The electric power management circuit is controlled to be stopped or reduce output.The power circuit of the present invention is arranged on the defeated of electric power management circuit
On outbound path, by being detected to the output current of electric power management circuit, when the circuit in display occurs short-circuit, power supply
The electric current managed on the outgoing route of circuit can increase, and power circuit then can be detected timely by the situation of change of electric current
It is abnormal, and the working condition of electric power management circuit is controlled in time, and then avoid display from molten screen problem occur due to current anomaly.
Brief description of the drawings
Fig. 1 is the structural representation of the power circuit first embodiment of inventive display；
Fig. 2 is the structural representation of the power circuit second embodiment of inventive display；
Fig. 3 is the structural representation of the power circuit 3rd embodiment of inventive display；
Fig. 4 is the structural representation of the power circuit fourth embodiment of inventive display；
Fig. 5 is the structural representation of the embodiment of power circuit the 5th of inventive display；
The structural representation of Fig. 6 embodiment of inventive display one.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention and embodiment, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, in specification and Figure of description, identical structure uses identical label, it is clear that described embodiment
Only it is the part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
Refering to Fig. 1, Fig. 1 is the structural representation of the power circuit first embodiment of inventive display.As shown in figure 1,
The power circuit 100 of the present embodiment includes electric power management circuit 10 and current foldback circuit 20；Wherein, electric power management circuit 10 is used
In drive circuit (being not drawn into the figure) power supply for display；Current foldback circuit 20 and electric power management circuit 10 and drive circuit
Coupling, for detecting the output current of electric power management circuit 10, electricity is controlled in the output current exception of electric power management circuit 10
Power management circuits 10 are stopped or reduced output.
In the present embodiment, because the output current of electric power management circuit 10 is the electricity of the drive circuit offer to display
Stream, in other words, the output current of electric power management circuit 10 is the operating current of drive circuit.
The power circuit 100 of the display of the present embodiment on the outgoing route of electric power management circuit 10 by setting excessively stream
Protection circuit 20, by being detected to the electric current between electric power management circuit 10 and drive circuit, when exception occurs for the electric current
When can control the working condition of electric power management circuit 10 in time, avoid display from molten screen problem occur due to current anomaly.
Further, the current foldback circuit 20 in the present embodiment is arranged on the VGH drive circuits of display, VGL driving electricity
Between at least two drive circuits and electric power management circuit 10 in road and VCOM drive circuits, therefore, excessively stream in the present embodiment
Protection circuit 20 be arranged in the road circuit of VGH, VGL and VCOM tri- at least on two-way, above-mentioned three road circuit is avoided simultaneously with this
Generation short circuit.Wherein, because VGH, VGL are different with VCOM caused path, VGH and VGL are produced by power management integrated circuit
Give birth to and export, and VCOM is produced and exported by gamma driving chip, therefore the electric power management circuit 10 in the present embodiment includes electricity
Source control integrated circuit and gamma driving chip, i.e. current foldback circuit 20 in the present invention are arranged on power management integrated circuit
VGH and VGL output circuit and gamma driving chip VCOM output circuit in any two or more than two
In circuit, the power circuit 100 shown in Fig. 1 is the output circuit 2 of the output circuit 1 and VGL in the VGH of electric power management circuit 10
Middle setting current foldback circuit 20, VCOM output circuit is not drawn into, it is to be understood that is set on VCOM output circuit
Current foldback circuit it is identical with the structure and connected mode of the current foldback circuit in Fig. 1, in addition, electric power management circuit 10 also
Including a power output end VD33,3.3V voltage is exported.
Refering to Fig. 2, Fig. 2 is the structural representation of the power circuit second embodiment of inventive display.As shown in Fig. 2
So that electric power management circuit 10 is power management integrated circuit as an example, current foldback circuit 20 is set the power circuit 200 of the present embodiment
Put on the VGH of power management integrated circuit output circuit and VGL output circuit, it is to be understood that overcurrent protection electricity
Road 20 can also be arranged on the VCOM of gamma driving chip outgoing route.
In the present embodiment, current foldback circuit 20 includes current sense subcircuit 21 and control sub-circuit 22, wherein, electric current
The output end 1 of the coupling electric power management circuit 10 of input 4 of detection sub-circuit 21,2, and the output of current sense subcircuit 21
End 6 is coupled to the input 7 of control sub-circuit 22, the coupling of output end 5 of control sub-circuit 22 and making for electric power management circuit 10
Can end 3.When current sense subcircuit 21 detects that the operating current between electric power management circuit 10 and drive circuit is exceeded, triggering
Control sub-circuit 22 to export low-voltage signal to the Enable Pin 3 of electric power management circuit 10, and then control the work of electric power management circuit 10
Make state, electric power management circuit 10 is stopped or reduce output.Electric power management circuit 10 and drive circuit in the present embodiment
Between the exceeded operating current referred between electric power management circuit 10 and drive circuit of operating current be enough to make current detecting son electricity
Road 21 exports respective drive signal to control sub-circuit 22, control sub-circuit 22 is controlled power supply according to the corresponding drive signal
The working condition of circuit 10 is managed, now the output current of electric power management circuit 10 is considered as exceeded.
Fig. 3 is further regarded to, Fig. 3 is the structural representation of the power circuit 3rd embodiment of inventive display.Such as Fig. 3
It is shown, in the present embodiment the current sense subcircuit 21 of the current foldback circuit 20 of power circuit 300 include detection resistance R1 and
Photoelectrical coupler, detection resistance R1 are connected on the output end 1,2 of electric power management circuit 10；Photoelectrical coupler includes light emitting diode
D1 and phototriode D2, light emitting diode D1 both ends are in parallel with detection resistance R1 both ends, phototriode D2 output
End is coupled to the input 7 of control sub-circuit 22, and now phototriode D2 output end is current sense subcircuit 21
Output end 6, phototriode D2 input input the input voltage VD33 of a 3.3V, phototriode D2 control terminal and hair
Optical coupling between optical diode D1.
Light emitting diode D1 is photophore in photoelectrical coupler, and phototriode D2 is light-receiving device, light emitting diode D1 and
Phototriode D2, which is encapsulated in a shell, forms photoelectrical coupler.When light emitting diode D1 input input current signal
When, light emitting diode D1 lights, and light emitting diode D1 luminous intensity is directly proportional to the intensity for the current signal that it flows through, electricity
Stream signal is stronger, and its luminous intensity is bigger；Phototriode D2 control terminal receives the light that light emitting diode D1 is sent, and will connect
The luminous energy being subject to is converted to electric energy, produces electric current and is flowed out from phototriode D2 output end, so as to realize " electrical-optical-electrical "
Energy conversion.In the present embodiment, when occurring short-circuit in display, the electric current that electric power management circuit 10 exports can become big, cause
Light emitting diode D1 luminous intensity becomes big, when light emitting diode D1 luminous intensity is sufficiently large, can make phototriode
Voltage between D2 control terminal and output end is more than phototriode D2 conducting voltage, phototriode D2 conductings, and light
Electric triode D2 output current can gradually increase with the increase of light emitting diode D1 luminous intensity；Work as phototriode
When D2 output current is sufficiently large, it, which is input to the corresponding drive signal that control sub-circuit 22 exports, can make control sub-circuit
22 to electric power management circuit 10 Enable Pin 3 export low-voltage signal, and then make electric power management circuit 10 be stopped or reduce it is defeated
Go out.
Further, refering to Fig. 4, Fig. 4 is the structural representation of the protection circuit fourth embodiment of inventive display.Such as figure
Shown in 4, the control sub-circuit 22 of the current foldback circuit 20 of the protection circuit 400 in the present embodiment includes switching tube D3, switch
The output end of pipe D3 control terminal coupling current sense subcircuit 21, switching tube D3 output end coupling electric power management circuit 10
Enable Pin 3, now, switching tube D3 output end are to control the output end 5 of sub-circuit 22.
Further, sub-circuit 22 is controlled also to include a divider resistance R2 in the present embodiment, divider resistance R2 one end connects
Connect switching tube D3 control terminal, other end connecting valve pipe D3 input.
In the present embodiment, when display occurs short-circuit, the electric current that electric power management circuit 10 exports increases, and then causes electricity
Stream detection sub-circuit 21 input causes divider resistance R2 and switching tube D3 control terminal to connect to the electric current increase of control sub-circuit 22
The voltage at A points connect is gradually risen, and when the voltage at A points is higher than switching tube D3 conducting voltage, switching tube D3 is switched on；
Now, switching tube D3 output end then exports a low-voltage signal to the Enable Pin 3 of electric power management circuit 10, and then controls power supply pipe
The working condition of circuit 10 is managed, makes electric power management circuit 10 be stopped or reduce output.
Refering to Fig. 5, Fig. 5 is the structural representation of the embodiment of power circuit the 5th of inventive display.As shown in figure 5,
Current foldback circuit in the power circuit 500 of the present embodiment includes current sense subcircuit 21 and control sub-circuit 22, this reality
Apply current sense subcircuit 21 and the control connected mode of sub-circuit 22 and the power circuit 200 of the display shown in Fig. 2 in example
Connected mode is identical, further, the power circuit of the display shown in current sense subcircuit 21 and Fig. 3 in the present embodiment
300 current sense subcircuit is identical, and controls control of the power circuit 400 of the display shown in sub-circuit 22 and Fig. 4
Circuit is identical, and in other words, the present embodiment is the power circuit first embodiment as the display shown in Fig. 1 to Fig. 4 to the 4th real
The new embodiment that example is bound to each other to form is applied, the power circuit first of concrete structure and the display shown in Fig. 1 to Fig. 4 is implemented
Example is identical to fourth embodiment, and here is omitted.
Further regard to Fig. 5, the Enable Pin 3 of the electric power management circuit 10 in the present embodiment is also associated with resistance R3 and resistance
R4, partial pressure is carried out to the Enable Pin 3 of electric power management circuit 10 by resistance R3 and resistance R4, and then further control power management
The input voltage of the Enable Pin 3 of circuit 10.
Refering to Fig. 6, Fig. 6 is the structural representation of the embodiment of inventive display one.As shown in fig. 6, the present embodiment is aobvious
Show that device 600 includes back light 62, display panel 61 and drive component 63, drive component 63 is respectively coupled to back light 62 and shown
Show panel 61.Drive component 63 is that back light 62 provides power supply and drive signal, and drive component 63 is display panel 61
Drive signal is provided.Wherein, display panel 61 includes array base palte 611, color membrane substrates 612 and liquid crystal layer 613, array base palte
611 and color membrane substrates 612 be oppositely arranged, liquid crystal layer 613 is arranged between array base palte 611 and color membrane substrates 612.Back light
62 exiting surface is set with respect to the array base palte 611 of display panel 61, and light source is provided for display panel 61.
In the present embodiment, the power circuit first embodiment for the display being provided with drive component 63 shown in Fig. 1 to Fig. 5
The power circuit of any one display into the 5th embodiment, the concrete structure of power circuit are referred to shown in Fig. 1 to Fig. 5
Power circuit first embodiment to the 5th embodiment, here is omitted.
The power circuit of the present invention is arranged on the outgoing route of electric power management circuit, by the defeated of electric power management circuit
Go out electric current to be detected, when the circuit in display occurs short-circuit, the electric current on the outgoing route of electric power management circuit can increase
Greatly, power circuit then timely can detect exception by the situation of change of electric current, and control electric power management circuit in time
Working condition, and then avoid display from molten screen problem occur due to current anomaly.
Embodiments of the invention are these are only, are not intended to limit the scope of the invention, it is every to be said using the present invention
The equivalent structure or equivalent flow conversion that bright book and accompanying drawing content are made, or directly or indirectly it is used in other related technology necks
Domain, similarly it is included in the scope of patent protection of the present invention.
Claims (10)
- A kind of 1. power circuit of display, it is characterised in that including：Electric power management circuit, for the drive circuitry for the display；Current foldback circuit, the electric power management circuit and the drive circuit are coupled, for detecting the electric power management circuit Output current, control the electric power management circuit to be stopped or reduce output in the output current exception.
- 2. power circuit according to claim 1, it is characterised in thatThe current foldback circuit includes current sense subcircuit and controls sub-circuit, described in the current sense subcircuit coupling The output end of electric power management circuit and the control sub-circuit, the control sub-circuit are also coupled to making for the electric power management circuit Can end；Wherein, when the current sense subcircuit detects that the electric current output of the output end of the electric power management circuit is exceeded, touch Send out described and control sub-circuit to export low-voltage signal to the Enable Pin of the electric power management circuit.
- 3. power circuit according to claim 2, it is characterised in thatThe current sense subcircuit includes detection resistance and photoelectrical coupler, and the detection resistance is connected on the power management Between the output end of circuit and the drive circuit, the photoelectrical coupler includes light emitting diode and phototriode, The both ends of the light emitting diode are connected in parallel on the detection resistance both ends, and the output end of the phototriode is coupled to the control System circuit, optical coupling between the control terminal of the phototriode and the light emitting diode.
- 4. power circuit according to claim 2, it is characterised in thatThe control sub-circuit includes switching tube, and the control terminal of the switching tube couples the current sense subcircuit, described to open The output end for closing pipe is coupled to the Enable Pin of the electric power management circuit.
- 5. power circuit according to claim 4, it is characterised in that the control sub-circuit also includes divider resistance；The control terminal of the switching tube connects the output end of the current sense subcircuit and one end of the divider resistance；Institute The input for stating switching tube connects the other end of the branch pressure voltage, and is grounded；The output end of the switching tube connects the electricity The Enable Pin of power management circuits.
- 6. power circuit according to claim 1, it is characterised in thatThe drive circuit includes at least two driving electricity in VGH drive circuits, VGL drive circuits and VCOM drive circuits Road.
- A kind of 7. display, it is characterised in that including：Electric power management circuit, for the drive circuitry for the display；Current foldback circuit, the electric power management circuit and the drive circuit are coupled, for detecting the electric power management circuit Output current, control the electric power management circuit to be stopped or reduce output in the output current exception.
- 8. display according to claim 7, it is characterised in thatThe current foldback circuit includes current sense subcircuit and controls sub-circuit, described in the current sense subcircuit coupling The output end of electric power management circuit and the control sub-circuit, the control sub-circuit are also coupled to making for the electric power management circuit Can end；Wherein, when the current sense subcircuit detects that the electric current output of the output end of the electric power management circuit is exceeded, touch Send out described and control sub-circuit to export low-voltage signal to the Enable Pin of the electric power management circuit.
- 9. display according to claim 8, it is characterised in thatThe current sense subcircuit includes detection resistance and photoelectrical coupler, and the detection resistance is connected on the power management Between the output end of circuit and the drive circuit, light emitting diode and phototriode that the photoelectrical coupler includes Pipe, the both ends of the light emitting diode are connected in parallel on the detection resistance both ends, and the output end of the phototriode is coupled to institute State control sub-circuit, optical coupling between the control terminal of the phototriode and the light emitting diode.
- 10. display according to claim 8, it is characterised in thatThe control sub-circuit includes switching tube, and the control terminal of the switching tube couples the current sense subcircuit, described to open The output end for closing pipe is coupled to the Enable Pin of the electric power management circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710723991.XA CN107528288A (en) | 2017-08-21 | 2017-08-21 | The power circuit and display of a kind of display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710723991.XA CN107528288A (en) | 2017-08-21 | 2017-08-21 | The power circuit and display of a kind of display |
Publications (1)
| Publication Number | Publication Date |
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| CN107528288A true CN107528288A (en) | 2017-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710723991.XA Pending CN107528288A (en) | 2017-08-21 | 2017-08-21 | The power circuit and display of a kind of display |
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| CN (1) | CN107528288A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109448621A (en) * | 2018-10-19 | 2019-03-08 | 深圳市华星光电技术有限公司 | A kind of driving circuit and display device |
| WO2020048009A1 (en) * | 2018-09-03 | 2020-03-12 | 重庆惠科金渝光电科技有限公司 | Overcurrent protection driving circuit and display device |
| CN110890052A (en) * | 2019-11-29 | 2020-03-17 | Tcl华星光电技术有限公司 | Driving circuit, driving method and display device |
| CN111525793A (en) * | 2020-04-17 | 2020-08-11 | Tcl华星光电技术有限公司 | Power circuit, display panel using same and dynamic adjustment method |
| US11070047B2 (en) | 2018-09-03 | 2021-07-20 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Overcurrent protection driving circuit and display apparatus |
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| CN102339585A (en) * | 2010-07-19 | 2012-02-01 | 三星电机株式会社 | Apparatus for driving light emitting device with over-current and over-voltage protection |
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| CN203481783U (en) * | 2013-09-25 | 2014-03-12 | 山东贞明光电科技有限公司 | Short circuit and overcurrent protection circuit and mass production test equipment |
| CN204333899U (en) * | 2014-12-26 | 2015-05-13 | 康奋威科技（杭州）有限公司 | A kind of alternative fuse control circuit |
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| CN102339585A (en) * | 2010-07-19 | 2012-02-01 | 三星电机株式会社 | Apparatus for driving light emitting device with over-current and over-voltage protection |
| CN103390878A (en) * | 2012-05-07 | 2013-11-13 | 海洋王照明科技股份有限公司 | Lamp power output overvoltage protection circuit and lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020048009A1 (en) * | 2018-09-03 | 2020-03-12 | 重庆惠科金渝光电科技有限公司 | Overcurrent protection driving circuit and display device |
| US11070047B2 (en) | 2018-09-03 | 2021-07-20 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Overcurrent protection driving circuit and display apparatus |
| CN109448621A (en) * | 2018-10-19 | 2019-03-08 | 深圳市华星光电技术有限公司 | A kind of driving circuit and display device |
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| CN110890052A (en) * | 2019-11-29 | 2020-03-17 | Tcl华星光电技术有限公司 | Driving circuit, driving method and display device |
| CN111525793A (en) * | 2020-04-17 | 2020-08-11 | Tcl华星光电技术有限公司 | Power circuit, display panel using same and dynamic adjustment method |
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Application publication date: 20171229 |