CN109410868A - Display panel drive device - Google Patents
Display panel drive device Download PDFInfo
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- CN109410868A CN109410868A CN201811490351.XA CN201811490351A CN109410868A CN 109410868 A CN109410868 A CN 109410868A CN 201811490351 A CN201811490351 A CN 201811490351A CN 109410868 A CN109410868 A CN 109410868A
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- electrically connected
- resistance
- supply voltage
- voltage
- display panel
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention provides a kind of display panel drive device.The display panel drive device includes power-switching circuit and the mainboard with power-switching circuit electric connection；The power-switching circuit includes the first output module and the second output module detecting control module and being electrically connected with the detecting control module, the voltage value of supply voltage can be identified by detecting control module, according to the first output module of different controls of voltage value or the work of the second output module, so that the voltage for being input to mainboard is consistent with the operating voltage of mainboard always, realize that can arrange in pairs or groups two different power supplys of one piece of mainboard use, the application range for extending mainboard, reduces the control cost of product.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of display panel drive devices.
Background technique
With the development of display technology, the planes such as liquid crystal display (Liquid Crystal Display, LCD) display dress
It sets because having many advantages, such as that high image quality, power saving, fuselage is thin and has a wide range of application, and is widely used in mobile phone, TV, a number
The various consumer electrical products such as word assistant, digital camera, laptop, desktop computer, become the master in display device
Stream.
Liquid crystal display device on existing market is largely backlight liquid crystal display comprising liquid crystal display panel and
Backlight module (backlight module).The working principle of liquid crystal display panel is put in the parallel glass substrate of two panels
Liquid crystal molecule is set, there are many tiny electric wires vertically and horizontally for two panels glass substrate centre, control liquid crystal whether by being powered
The light refraction of backlight module is come out and generates picture by molecular changes direction.
Usual liquid crystal display panel also needs to be driven by external driver device, as shown in Figure 1, the external drive
Device generally comprises: power supply 100 and mainboard 200, and the power supply 100 is electrically connected with the mainboard 200,200 electricity of mainboard
Property connection display panel 300, the power supply 100 be generally used for mainboard 200 provide supply voltage, the mainboard 200 be used for
Display panel 300 provides the driving voltage that display panel 300 works.
It in the prior art, mainly include two type of 24V and 12V for the output voltage of the power supply of liquid crystal display device
Type, and existing mainboard generally has a determining working power, generally 24V or 12V, that is to say, that in a liquid crystal
In display device, after the output voltage of power supply determines, the type of the mainboard of the liquid crystal display device is had also determined that, it is necessary to be
The output voltage of operating voltage and the power supply is consistent to wish parents, with guarantee mainboard can work well, in the prior art, liquid
The mainboard of crystal device cannot the power supplys of mashed up middle different output voltages use, the power supply of same specification may only be matched, it is right
The compatibility of the power supply of different output voltages is bad, and causing the application of mainboard, there are limitations, manages cost and also correspondinglys increase.
Summary of the invention
The purpose of the present invention is to provide a kind of display panel drive devices, can extend the application range of mainboard, reduce
Product manages cost.
To achieve the above object, the present invention provides a kind of display panel drive device, including power-switching circuit and with
The mainboard that power-switching circuit is electrically connected；
The power-switching circuit includes first for detecting control module and being electrically connected with the detecting control module
Output module and the second output module；
The detecting control module is for receiving supply voltage, when the voltage value of the supply voltage is the first voltage value
The control signal for generating the first current potential generates when the voltage value of the supply voltage is second voltage value and is different from the first current potential
The second current potential control signal, the first voltage value be greater than second voltage value；
First output module is for receiving supply voltage and control signal, when the control signal is the first current potential
When, decompression processing is carried out to supply voltage, and the supply voltage after decompression is exported to mainboard, when the control signal is second
When current potential, stop output voltage to mainboard；
Second output module is for receiving supply voltage and control signal, when the control signal is the second current potential
When, supply voltage is exported to mainboard, when the control signal is the first current potential, stops output voltage to mainboard.
The detecting control module includes: first resistor, second resistance, 3rd resistor and the first triode；
The first end of the first resistor receives supply voltage, and second end is electrically connected the first end of second resistance；
The second end of the second resistance is grounded；
The first end of the 3rd resistor is electrically connected the first end of first resistor, and second end is electrically connected the first triode
Collector and export control signal；
The base stage of first triode is electrically connected the second end of first resistor, emitter ground connection.
First output module includes: the 4th resistance, the 5th resistance, the first metal-oxide-semiconductor and pressure unit；
The first end of 4th resistance receives supply voltage, and second end is electrically connected the first end of the 5th resistance；
The second end of 5th resistance receives control signal；
The grid of first metal-oxide-semiconductor is electrically connected the first end of the 5th resistance, and source electrode is electrically connected the of the 4th resistance
One end, drain electrode are electrically connected the input terminal of pressure unit；
The output end of the pressure unit is electrically connected mainboard.
First output module further includes first capacitor and the second capacitor；
The first end of the first capacitor is electrically connected the first end of the 4th resistance, second end ground connection；
The first end of second capacitor is electrically connected the drain electrode of the first metal-oxide-semiconductor, second end ground connection.
Second output module include: the 6th resistance, the 7th resistance, the 8th resistance, the second metal-oxide-semiconductor, the second triode,
Third transistor and diode；
The first end of 6th resistance receives supply voltage, and second end is electrically connected the first end of the 7th resistance；
The second end of 7th resistance is electrically connected the collector of the second triode；
The first end of 8th resistance is electrically connected the first end of the 6th resistance, and second end is electrically connected third transistor
Collector；
The grid of second metal-oxide-semiconductor is electrically connected the first end of the 7th resistance, and source electrode is electrically connected the of the 6th resistance
One end, drain electrode are electrically connected mainboard；
The base stage of second triode is electrically connected the cathode of two electrodes, emitter ground connection；
The base stage of the third transistor receives control signal, the anode of electrical two electrodes of collector, emitter ground connection.
Second output module further includes third capacitor and the 4th capacitor；
The first end of the third capacitor is electrically connected the first end of the 6th resistance, second end ground connection；
The first end of 4th capacitor is electrically connected the drain electrode of the second metal-oxide-semiconductor, second end ground connection.
The display panel drive device further includes the power supply being electrically connected with the power-switching circuit, and the power supply is used
In to the power-switching circuit output supply voltage.
First output module carries out decompression processing to supply voltage specifically: by the supply voltage from first voltage
Value is depressurized to second voltage value.
First current potential is less than the second current potential.
The first voltage value is 24V, second voltage value 12V.
Beneficial effects of the present invention: the present invention provides a kind of display panel drive device, including power-switching circuit and with
The mainboard that power-switching circuit is electrically connected；The power-switching circuit includes detecting control module and controls with the detecting
The first output module and the second output module that module is electrically connected can identify the voltage of supply voltage by detecting control module
Value works according to the first output module of different controls of voltage value or the second output module, so that the voltage for being input to mainboard begins
It is consistent with the operating voltage of mainboard eventually, realize that one piece of mainboard can arrange in pairs or groups the uses of two different power supplys, extend the application of mainboard
Range reduces the control cost of product.
Detailed description of the invention
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with of the invention detailed
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
In attached drawing,
Fig. 1 is the schematic diagram of existing display panel drive device；
Fig. 2 is the schematic diagram of display panel drive device of the invention；
Fig. 3 is the circuit diagram of power conversion module in display panel drive device of the invention.
Specific embodiment
Further to illustrate technological means and its effect adopted by the present invention, below in conjunction with preferred implementation of the invention
Example and its attached drawing are described in detail.
Please refer to Fig. 2 to Fig. 3, the present invention provides a kind of display panel drive device, including power-switching circuit 1 and with electricity
The mainboard 2 that power-switching circuit 1 is electrically connected；
The power-switching circuit 1 includes detecting control module 11 and is electrically connected with the detecting control module 11
First output module 12 and the second output module 13；
The detecting control module 11 is for receiving supply voltage Vc, when the voltage value of the supply voltage Vc is the first electricity
The control signal Ctr that the first current potential is generated when pressure value is generated not when the voltage value of the supply voltage Vc is second voltage value
It is same as the control signal Ctr of the second current potential of the first current potential, the first voltage value is greater than second voltage value；
First output module 12 is for receiving supply voltage Vc and control signal Ctr, when the control signal Ctr is
When the first current potential, decompression processing is carried out to supply voltage Vc, supply voltage Vc after by decompression is exported to mainboard 2, described
When control signal is the second current potential, stop output voltage to mainboard 2；
Second output module 13 is for receiving supply voltage Vc and control signal Ctr, when the control signal Ctr is
When the second current potential, supply voltage Vc is exported to mainboard 2, when the control signal Ctr is the first current potential, stops output voltage
To mainboard 2.
In addition, as shown in Fig. 2, the display panel drive device further includes being electrically connected with the power-switching circuit 1
Power supply 3, the power supply 3 is used for the 1 output supply voltage Vc of power-switching circuit.
Specifically, according to the difference of the model of the power supply 3, the power supply 3 is output to the electricity of the power-switching circuit 1
Source voltage Vc can be 12V or 24V.
Specifically, first output module 11 carries out decompression processing to supply voltage Vc specifically: by the power supply electricity
It presses Vc to be depressurized to second voltage value from the first voltage value, namely is reduced to 12V from 24V.
Specifically, first current potential is less than the second current potential.
Specifically, in a specific embodiment of the present invention, the detecting control module 11 includes: first resistor R1, second
Resistance R2,3rd resistor R3 and the first triode T1；The first end of the first resistor R1 receives supply voltage Vc, second end electricity
Property connection second resistance R2 first end；The second end of the second resistance R2 is grounded；The first end electricity of the 3rd resistor R3
Property connection first resistor R1 first end, second end be electrically connected the first triode T1 collector simultaneously export control signal Ctr；
The base stage of the first triode T1 is electrically connected the second end of first resistor R1, emitter ground connection.
Specifically, in a specific embodiment of the present invention, first output module 12 includes: the 4th resistance R4, the 5th
Resistance R5, the first metal-oxide-semiconductor Q1 and pressure unit J1；The first end of the 4th resistance R4 receives supply voltage Vc, second end electricity
Property connection the 5th resistance R5 first end；The second end of the 5th resistance R5 receives control signal Ctr；First metal-oxide-semiconductor
The grid of Q1 is electrically connected the first end of the 5th resistance R5, and source electrode is electrically connected the first end of the 4th resistance R4, and drain electrode electrically connects
Connect the input terminal of pressure unit J1；The output end of the pressure unit J1 is electrically connected mainboard 2.
Further, in a specific embodiment of the present invention, first output module 12 further include first capacitor C1 and
Second capacitor C2；The first end of the first capacitor C1 is electrically connected the first end of the 4th resistance R4, second end ground connection；Described
The first end of two capacitor C2 is electrically connected the drain electrode of the first metal-oxide-semiconductor Q1, second end ground connection.Wherein, the first capacitor C1 and
Two capacitor C2 are filter capacitor.
Specifically, second output module 13 includes: the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, second
Metal-oxide-semiconductor Q2, the second triode T2, third transistor T3 and diode D1；The first end of the 6th resistance R6 receives power supply electricity
Vc is pressed, second end is electrically connected the first end of the 7th resistance R7；The second end of the 7th resistance R7 is electrically connected the two or three pole
The collector of pipe T2；The first end of the 8th resistance R8 is electrically connected the first end of the 6th resistance R6, and second end is electrically connected with the
The collector of three triode T3；The grid of the second metal-oxide-semiconductor Q2 is electrically connected the first end of the 7th resistance R7, and source electrode electrically connects
The first end of the 6th resistance R6 is connect, drain electrode is electrically connected mainboard 2；The base stage of the second triode T2 is electrically connected two electrode D1
Cathode, emitter ground connection；The base stage of the third transistor T3 receives control signal Ctr, the electrical two electrode D1's of collector
Anode, emitter ground connection.
Further, second output module 13 further includes third capacitor C3 and the 4th capacitor C4；The third capacitor
The first end of C3 is electrically connected the first end of the 6th resistance R6, second end ground connection；The first end of the 4th capacitor C4 electrically connects
Connect the drain electrode of the second metal-oxide-semiconductor Q2, second end ground connection.Wherein, the third capacitor C3 and the 4th capacitor C4 is filter capacitor.
Specifically, in an embodiment of the present invention, the first resistor R1 is 24 kilo-ohms, and second resistance R2 is 1 kilo-ohm, the
Three resistance R3 are 10 kilo-ohms, and the conducting voltage Vbe of the first triode T1 is 0.7V；
As shown in figure 3, when the supply voltage Vc that power supply 3 is output to the power-switching circuit 1 is 24V, described first
The base voltage of triode is 0.96V, the first triode T1 conducting, the voltage quilt of the collector of the first triode T1
It is pulled low to 0, namely the current potential 0 for controlling signal Ctr exported namely first current potential are 0 current potential.
As shown in figure 3, when the supply voltage Vc that power supply 3 is output to the power-switching circuit 1 is 12V, described first
The base voltage of triode is 0.48V, the first triode T1 cut-off, and the voltage of the collector of the first triode T1 is
12V, namely the current potential of control signal Ctr of output is 12V namely second current potential is 12V.
Further, the 4th resistance R4 is 10 kilo-ohms, and the 5th resistance R5 is 10 kilo-ohms, and first capacitor C1 is 1 μ F, the
Two capacitors are 10 μ F, and first metal-oxide-semiconductor is p-type metal-oxide-semiconductor, and the gate-source voltage of p-type metal-oxide-semiconductor is connected when being negative pressure.
As shown in figure 3, controlling signal when the supply voltage Vc that power supply 3 is output to the power-switching circuit 1 is 24V
Ctr is 0 current potential, and the grid voltage of the first metal-oxide-semiconductor Q1 is equal to 12V, and the gate-source voltage of the first metal-oxide-semiconductor is negative 12V, thus first
Metal-oxide-semiconductor conducting, the supply voltage Vc of 24V is input in pressure unit J1, by pressure unit J1 be depressurized to 12V after, generate
Supply voltage after the decompression of 12V is input to the operating voltage in mainboard 1 as mainboard 1；
As shown in figure 3, controlling signal when the supply voltage Vc that power supply 3 is output to the power-switching circuit 1 is 12V
Ctr is that no current flows through on 12V, the 4th resistance R4 and the 5th resistance R5, and the grid voltage of the first metal-oxide-semiconductor Q1 is equal to 12V, first
The gate-source voltage of metal-oxide-semiconductor is 0V, so that the first metal-oxide-semiconductor Q1 ends, the supply voltage Vc of 12V can not pass through the first metal-oxide-semiconductor Q1
It is input in pressure unit J1, the output end Non voltage output of pressure unit J1.
Further, the 6th resistance R6 is 10 kilo-ohms, the 7th resistance R7 is 10 kilo-ohms, the 8th resistance R8 is 10,000
Europe, third capacitor C3 are 1 μ F, and the 4th capacitor is 10 μ F, and the second metal-oxide-semiconductor Q2 is p-type metal-oxide-semiconductor, the grid source electrode of p-type metal-oxide-semiconductor
Voltage is connected when being negative pressure, and diode D1 is Schottky diode.
As shown in figure 3, controlling signal when the supply voltage Vc that power supply 3 is output to the power-switching circuit 1 is 24V
Ctr is 0 current potential, and third transistor T3 conducting, the collector voltage of third transistor T3 is 0V, and diode D1 reverse bias is cut
Only, the second triode T2 ends, and the grid voltage of the second metal-oxide-semiconductor Q2 is 24V, and the gate-source voltage of the second metal-oxide-semiconductor Q2 is 0, the
Two metal-oxide-semiconductor Q2 cut-off, the supply voltage Vc of 24V can not be input in mainboard 1 by the second metal-oxide-semiconductor Q2；
As shown in figure 3, controlling signal when the supply voltage Vc that power supply 3 is output to the power-switching circuit 1 is 12V
Ctr is 12V, and third transistor T3 cut-off, the collector voltage of third transistor T3 is 12V, and diode D1 forward bias is connected,
Second triode T2 conducting, the grid voltage of the second metal-oxide-semiconductor Q2 are 6V, and the gate-source voltage of the second metal-oxide-semiconductor Q2 is negative 6V, second
Metal-oxide-semiconductor Q2 conducting, the supply voltage Vc of 12V are input to the operating voltage in mainboard 1 as mainboard 1 by the second metal-oxide-semiconductor Q2.
Further, the mainboard 1 of display panel drive device of the invention and display panel 4 are electrically connected, for that will lead
The operating voltage of plate 1 is supplied to display panel 4, to drive the display panel 4 to work, i.e. by 12V in corresponding above-described embodiment
Voltage input display panel 4 in.
In conclusion the present invention provides a kind of display panel drive device, including power-switching circuit and converted with power supply
The mainboard that circuit is electrically connected；The power-switching circuit is electrical including detecting control module and with the detecting control module
The first output module and the second output module of connection can identify the voltage value of supply voltage by detecting control module, according to
The first output module of different control of voltage value or the work of the second output module so that be input to the voltage of mainboard always with mainboard
Operating voltage it is consistent, realize that can arrange in pairs or groups two different power supplys of one piece of mainboard use, extend the application range of mainboard, reduce
The control cost of product.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding changes and modifications are made in design, and all these change and modification all should belong to the claims in the present invention
Protection scope.
Claims (10)
1. a kind of display panel drive device, which is characterized in that including power-switching circuit (1) and with power-switching circuit (1)
The mainboard (2) of electric connection；
The power-switching circuit (1) includes detecting control module (11) and is electrically connected with the detecting control module (11)
The first output module (12) and the second output module (13)；
The detecting control module (11) is for receiving supply voltage (Vc), when the voltage value of the supply voltage (Vc) is first
The control signal (Ctr) that the first current potential is generated when voltage value, when the voltage value of the supply voltage (Vc) is second voltage value
The control signal (Ctr) for being different from the second current potential of the first current potential is generated, the first voltage value is greater than second voltage value；
First output module (12) is for receiving supply voltage (Vc) and control signal (Ctr), when the control signal
(Ctr) when being the first current potential, decompression processing carried out to supply voltage (Vc), and by supply voltage (Vc) output after decompression to master
Plate (2) stops output voltage to mainboard (2) when the control signal (Ctr) is the second current potential；
Second output module (13) is for receiving supply voltage (Vc) and control signal (Ctr), when the control signal
(Ctr) when being the second current potential, by supply voltage (Vc) output to mainboard (2), when the control signal (Ctr) is the first current potential
When, stop output voltage to mainboard (2).
2. display panel drive device as described in claim 1, which is characterized in that the detecting control module (11) includes:
First resistor (R1), second resistance (R2), 3rd resistor (R3) and the first triode (T1)；
The first end of the first resistor (R1) receives supply voltage (Vc), and second end is electrically connected the first of second resistance (R2)
End；
The second end of the second resistance (R2) is grounded；
The first end of the 3rd resistor (R3) is electrically connected the first end of first resistor (R1), and second end is electrically connected the one or three
The collector of pole pipe (T1) simultaneously exports control signal (Ctr)；
The base stage of first triode (T1) is electrically connected the second end of first resistor (R1), emitter ground connection.
3. display panel drive device as described in claim 1, which is characterized in that first output module (12) includes:
4th resistance (R4), the 5th resistance (R5), the first metal-oxide-semiconductor (Q1) and pressure unit (J1)；
The first end of 4th resistance (R4) receives supply voltage (Vc), and second end is electrically connected the first of the 5th resistance (R5)
End；
The second end of 5th resistance (R5) receives control signal (Ctr)；
The grid of first metal-oxide-semiconductor (Q1) is electrically connected the first end of the 5th resistance (R5), and source electrode is electrically connected the 4th resistance
(R4) first end, drain electrode are electrically connected the input terminal of pressure unit (J1)；
The output end of the pressure unit (J1) is electrically connected mainboard (2).
4. display panel drive device as described in claim 1, which is characterized in that first output module (12) further includes
First capacitor (C1) and the second capacitor (C2)；
The first end of the first capacitor (C1) is electrically connected the first end of the 4th resistance (R4), second end ground connection；
The first end of second capacitor (C2) is electrically connected the drain electrode of the first metal-oxide-semiconductor (Q1), second end ground connection.
5. display panel drive device as described in claim 1, which is characterized in that second output module (13) includes:
6th resistance (R6), the 7th resistance (R7), the 8th resistance (R8), the second metal-oxide-semiconductor (Q2), the second triode (T2), the three or three pole
Manage (T3) and diode (D1)；
The first end of 6th resistance (R6) receives supply voltage (Vc), and second end is electrically connected the first of the 7th resistance (R7)
End；
The second end of 7th resistance (R7) is electrically connected the collector of the second triode (T2)；
The first end of 8th resistance (R8) is electrically connected the first end of the 6th resistance (R6), and second end is electrically connected the three or three
The collector of pole pipe (T3)；
The grid of second metal-oxide-semiconductor (Q2) is electrically connected the first end of the 7th resistance (R7), and source electrode is electrically connected the 6th resistance
(R6) first end, drain electrode are electrically connected mainboard (2)；
The base stage of second triode (T2) is electrically connected the cathode of two electrodes (D1), emitter ground connection；
The base stage of the third transistor (T3) receives control signal (Ctr), the anode of electrical two electrodes (D1) of collector, transmitting
Pole ground connection.
6. display panel drive device as claimed in claim 5, which is characterized in that second output module (13) further includes
Third capacitor (C3) and the 4th capacitor (C4)；
The first end of the third capacitor (C3) is electrically connected the first end of the 6th resistance (R6), second end ground connection；
The first end of 4th capacitor (C4) is electrically connected the drain electrode of the second metal-oxide-semiconductor (Q2), second end ground connection.
7. display panel drive device as described in claim 1, which is characterized in that further include and the power-switching circuit
(1) power supply (3) being electrically connected, the power supply (3) are used for the power-switching circuit (1) output supply voltage (Vc).
8. display panel drive device as described in claim 1, which is characterized in that first output module (11) is to power supply
Voltage (Vc) carries out decompression processing specifically: the supply voltage (Vc) is depressurized to second voltage value from the first voltage value.
9. display panel drive device as described in claim 1, which is characterized in that first current potential is less than the second current potential.
10. display panel drive device as described in claim 1, which is characterized in that the first voltage value be 24V, second
Voltage value is 12V.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490351.XA CN109410868B (en) | 2018-12-06 | 2018-12-06 | Display panel driving device |
| PCT/CN2018/121857 WO2020113677A1 (en) | 2018-12-06 | 2018-12-18 | Display panel driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490351.XA CN109410868B (en) | 2018-12-06 | 2018-12-06 | Display panel driving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109410868A true CN109410868A (en) | 2019-03-01 |
| CN109410868B CN109410868B (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811490351.XA Active CN109410868B (en) | 2018-12-06 | 2018-12-06 | Display panel driving device |
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| Country | Link |
|---|---|
| CN (1) | CN109410868B (en) |
| WO (1) | WO2020113677A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109410868B (en) | 2020-10-16 |
| WO2020113677A1 (en) | 2020-06-11 |
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