CN207602195U - Display module and its drive control circuit - Google Patents
Display module and its drive control circuit Download PDFInfo
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- CN207602195U CN207602195U CN201721646296.XU CN201721646296U CN207602195U CN 207602195 U CN207602195 U CN 207602195U CN 201721646296 U CN201721646296 U CN 201721646296U CN 207602195 U CN207602195 U CN 207602195U
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Abstract
The utility model is related to a kind of display module and its drive control circuits,The drive control circuit of display module includes feux rouges and drives IC,Green light drives IC,Blu-ray drives IC,At least one LED and control switch,LED includes red,It is green,Blue tri coloured lantern pearl,Feux rouges driving IC one end is connected to power supply,The other end is connected to the anode of red lamp bead,Green light driving IC one end is connected to power supply,The other end is connected to green lamp bead anode,Blu-ray drives IC one end is connected to power supply,The other end is connected to blue lamp bead anode,Red lamp bead,The cathode of green lamp bead and blue lamp bead is all connected to control switch,Control switch ground connection,And pass through reception control signal conduction or disconnection,Red lamp bead is powered using independent power supply,And the corresponding supply voltage of red lamp bead is less than green lamp bead supply voltage corresponding with blue lamp bead.By separately powering to red lamp bead and blue lamp bead, green lamp bead, the driving power consumption of red lamp bead is reduced, and then reduce the power consumption of entire LED.
Description
Technical field
The utility model is related to display technology field, more particularly to a kind of display module and its drive control circuit.
Background technology
The current most of constant-current driving LED using common anode circuit design of LED display modules on the market, common anode circuit
The LED display modules of design, since red (R), green (G), blue (B) lamp bead being given to provide identical voltage, and the forward voltage of R lamp beads
VfMinimum will cause R lamp beads early to enter constant current drive mode compared with G, B lamp bead, and be constantly in constant current drive mode, thus make
It obtains extra voltage and is added to driving chip end, increase the power consumption of driving chip.
Utility model content
Based on this, it is necessary to for the power problems of driving chip, provide a kind of display module and its drive control circuit.
The utility model first aspect provides a kind of drive control circuit of display module, including feux rouges driving IC, green light
IC, blu-ray drives IC, at least one LED and control switch, the LED is driven to include red, green, blue tri coloured lantern pearl, the feux rouges
Driving IC one end is connected to power supply, and the other end is connected to the anode of red lamp bead, and described green light driving IC one end is connected to power supply,
The other end is connected to green lamp bead anode, and described blu-ray drives IC one end is connected to power supply, and the other end is being connected to blue lamp bead just
Pole, the cathode of the red lamp bead, green lamp bead and blue lamp bead are all connected to the control switch, and the control switch connects
Ground, and pass through reception control signal conduction or disconnection, the red lamp bead is powered using independent power supply, and red lamp bead corresponds to
Supply voltage be less than the green lamp bead and the corresponding supply voltage of blue lamp bead.
The green lamp bead and blue lamp bead share power supply in one of the embodiments,.
The supply voltage electricity corresponding with blue lamp bead of the corresponding power supply of the green lamp bead in one of the embodiments,
The supply voltage in source is equal or different.
The utility model second aspect provides a kind of display module, including the first power supply, second source, feux rouges driving IC moulds
Block, green light driving IC modules, blu-ray drives IC modules, at least one LED and switch module, the LED include red, green, blue three
Colored lights pearl, described feux rouges driving IC modules one end are connected to the first power supply, and the other end is connected to the anode of red lamp bead, described green
Optical drive IC modules and the blu-ray drives IC modules share the second source, and be correspondingly connected to green lamp bead, blue lamp
The anode of pearl, the cathode of red lamp bead, green lamp bead and blue lamp bead are all connected to switch module, and the switch module is grounded,
And passing through the conducting and disconnection for controlling Signal-controlled switch component, the supply voltage of first power supply is less than the second source
Supply voltage.
The cathode of the red lamp bead of multiple LED, green lamp bead and blue lamp bead shares one in one of the embodiments,
Switch module.
The switch module is managed for N-MOS in one of the embodiments, and the grid of N-MOS pipes receives control signal, leakage
Pole connects the cathode of red lamp bead, blue lamp bead, green lamp bead, source electrode ground connection.
The utility model third aspect provides a kind of display module, including the first power supply, second source, third power supply, red
Optical drive IC modules, green light driving IC modules, blu-ray drives IC modules, at least one LED and switch module, the LED include
Red, green, blue tri coloured lantern pearl, described feux rouges driving IC modules one end are connected to the first power supply, and the other end is connected to red lamp bead
Anode, described green light driving IC modules one end are connected to second source, and the other end is connected to the anode of green lamp bead, the blue light
Driving IC modules one end is connected to third power supply, and the other end is connected to the anode of blue lamp bead, red lamp bead, green lamp bead and indigo plant
The cathode of colored lights pearl is all connected to switch module, the switch module ground connection, and passes through and control leading for Signal-controlled switch component
On and off is opened, and the supply voltage of first power supply is less than the supply voltage of the second source, and less than the confession of third power supply
Piezoelectric voltage.
The cathode of the red lamp bead of multiple LED, green lamp bead and blue lamp bead shares one in one of the embodiments,
Switch module.
The supply voltage of the second source and third power supply is equal or different in one of the embodiments,.
The switch module is managed for N-MOS in one of the embodiments, and the grid of N-MOS pipes receives control signal, leakage
Pole connects the cathode of red lamp bead, blue lamp bead, green lamp bead, source electrode ground connection.
Above-mentioned display module and its drive control circuit, by separately supplying red lamp bead and blue lamp bead, green lamp bead
Electricity, and the supply voltage of red lamp bead is made to be less than the supply voltage of blue lamp bead, green lamp bead, reduce red lamp bead so as to reach
Driving power consumption, and then reduce the purpose of the power consumption of entire LED.
Description of the drawings
Fig. 1 is the drive control circuit schematic diagram of the display module of one embodiment of the utility model；
Fig. 2 is the drive control circuit schematic diagram of the display module of another embodiment of the utility model；
Fig. 3 is the structure diagram of the display module of one embodiment of the utility model；
Fig. 4 is the structure diagram of the display module of another embodiment of the utility model.
Specific embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that make new to this practicality
The more thorough and comprehensive that the disclosure of type understands.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to the technology of the utility model
The normally understood meaning of technical staff in domain is identical.It is only in the term used in the description of the utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " packet
Include the arbitrary and all combination of one or more relevant Listed Items.
Referring to Fig. 1, one embodiment of the utility model provides a kind of drive control circuit of display module, the driving control
Circuit processed includes feux rouges driving IC, green light driving IC, blu-ray drives IC, at least one LED and control switch, the LED and includes
Red (R), green (G), blue (B) tri coloured lantern pearl, described feux rouges driving IC one end are connected to power supply, and the other end is connected to red lamp bead
Anode, described blu-ray drives IC one end are connected to power supply, and the other end is connected to blue lamp bead anode, described green light driving IC one end
Power supply is connected to, the other end is connected to green lamp bead anode, and the cathode of the red lamp bead, green lamp bead and blue lamp bead connects
The control switch is connected to, in some embodiments, red lamp bead, green lamp bead and blue lamp bead share cathode.The control
Switch ground connection, and pass through reception control signal conduction or disconnection, the red lamp bead is powered, and red colored lamp using independent power supply
The corresponding supply voltage of pearl is less than green lamp bead supply voltage corresponding with blue lamp bead.Those skilled in the art can manage
Solution, for the positive and negative anodes of red lamp bead, green lamp bead and blue lamp bead are with respect to diode, with the positive guide of diode
Lead to for standard, electric current flows to cathode by anode.
In some embodiments, the corresponding power source supplying voltage of the green lamp bead is equal to the corresponding power supply of blue lamp bead
Supply voltage.Illustratively, the green lamp bead and blue lamp bead are by sharing power supply, so as to make the supply voltage phase of power supply
Deng.By individually powering to red lamp bead, blue, green lamp bead shares power supply, and makes the supply voltage of red lamp bead less than blue, green
The supply voltage of colored lights pearl so as to reduce the pressure drop on feux rouges driving IC, so as to reduce feux rouges driving power consumption, and then reduces
The power consumption of entire LED.
If provide identical supply voltage V to red (R), green (G), blue (B) tri coloured lantern pearlled, it is red for specific LED
(R), green (G), the forward conduction voltage V of blue (B) tri coloured lantern pearlfFor certain value, and the LED being installed on same display screen,
Brightness, the total number and model are consistent, are also certain value so as to the corresponding electric current I of the LED on same display screen, according to formula：
LED module power consumption W=lamp bead power consumption W1+ driving power consumptions other power consumptions of W2+ W3
On the basis of other power consumptions W3 is ignored, LED module power consumption W is determined by lamp bead power consumption W1 and driving power consumption W2, and
Lamp bead power consumption W1=Vf* I, due on same display screen, the LED of same brightness degree, VfAnd I is definite value in theory,
Thus W1 is mainly determined in the ideal case by definite value therefore LED module power consumption W by driving power consumption W2.Driving chip is come
Say that power consumption can generally apply equation below：Driving power consumption W2=Idd*Vdd+(Iout*Vds*Duty)*N
Wherein IddTo drive the operating current of IC, VddDrive the operating voltage of IC, IoutFor channel output current, VdsTo drive
The voltage of dynamic IC output pins, Duty open duty ratio for channel, and N is port number.
If it follows that VddReduce, then Idd*VddReduce, the power consumption of first part reduces.For red lamp bead,
Forward conduction voltage VrfCompared with it is blue, green light pearl is small, then the voltage V of the driving IC output pins of red lamp beadrds=Vled-Vrf, due to
Red lamp bead is separately powered with blue, green lamp bead, and the supply voltage V of red lamp beadrledLess than the power supply electricity of blue, green lamp bead
Press Vgbled, thus, compared to the V of common anode drivingrled=Vgbled, the voltage V of the driving IC output pins of red lamp beadrdsReduce, from
And the voltage for being added to feux rouges driving IC both ends can be reduced, that is, reach and reduce VddPurpose so that driving power consumption W2 reduce.
In further embodiments, the supply voltage power supply corresponding with blue lamp bead of the corresponding power supply of the green lamp bead
Supply voltage differ.Illustratively, the green light drives IC and blu-ray drives IC by connecting different power supplys, so as to make
The supply voltage for stating the supply voltage power supply corresponding with blue lamp bead of the corresponding power supply of green lamp bead differs.
Please continue to refer to Fig. 2, one embodiment of the utility model also provides a kind of display module 10, and the display module 10 is wrapped
Include the first power supply 110, second source 120, feux rouges driving IC modules 130, green light driving IC modules 140, blu-ray drives IC modules
150th, at least one LED160 and switch module 170, the LED160 includes red (R), green (G), blue (B) tri coloured lantern pearl, described
130 one end of feux rouges driving IC modules is connected to the first power supply 110, and the other end is connected to the anode of red lamp bead, and the green light drives
Dynamic IC modules 140 and the blu-ray drives IC modules 150 share the second source 120, and be correspondingly connected to green lamp bead, indigo plant
The anode of colored lights pearl, the cathode of red lamp bead, green lamp bead and blue lamp bead are all connected to switch module 170, the switching group
Part 170 is grounded, and passes through the conducting and disconnection for controlling Signal-controlled switch component 170, the supply voltage of first power supply 110
Less than the supply voltage of the second source 120.
It will be appreciated by persons skilled in the art that the red lamp bead of multiple LED160, green lamp bead and blue lamp bead
Cathode can share a switch module 170, i.e., each LED160 corresponds to the component that opens the light.
In some embodiments, the switch module is managed for N-MOS, and the grid of N-MOS pipes receives control signal, and drain electrode connects
Red lamp bead, blue lamp bead, green lamp bead cathode, source electrode ground connection.
Please continue to refer to Fig. 3, the display module 20 of one embodiment of the utility model is basic with display module 10 shown in Fig. 2
Identical, the difference lies in the display modules 10 to further include third power supply 210,140 machine blu-ray drives of green light driving IC modules
IC modules 150 no longer share second source 120, but separate individually power supply, i.e., described second source 120 drives IC moulds for green light
Block 140 is powered, and the third power supply 210 is powered for blu-ray drives IC modules 150, and the supply voltage of first power supply 110 is small
In the supply voltage of second source 120, and less than the supply voltage of third power supply 210.The second source 120 and third power supply
210 supply voltage can be equal, can not also wait, specifically can be according to the forward conduction voltage of green lamp bead, blue lamp bead
Size and it is different.
Above-mentioned display module and its drive control circuit, by separately supplying red lamp bead and blue lamp bead, green lamp bead
Electricity, and the supply voltage of red lamp bead is made to be less than the supply voltage of blue lamp bead, green lamp bead, reduce red lamp bead so as to reach
Driving power consumption, and then reduce the purpose of the power consumption of entire LED.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that the common skill for this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of drive control circuit of display module, which is characterized in that driven including feux rouges driving IC, green light driving IC, blue light
Dynamic IC, at least one LED and control switch, the LED include red, green, blue tri coloured lantern pearl, feux rouges driving IC one end connection
In power supply, the other end is connected to the anode of red lamp bead, and described green light driving IC one end is connected to power supply, and the other end is connected to green
Colored lights pearl anode, described blu-ray drives IC one end are connected to power supply, and the other end is connected to blue lamp bead anode, the red colored lamp
The cathode of pearl, green lamp bead and blue lamp bead is all connected to the control switch, the control switch ground connection, and passes through reception control
Signal conduction processed or disconnection, the red lamp bead are powered using independent power supply, and the corresponding supply voltage of red lamp bead is less than
Green lamp bead supply voltage corresponding with blue lamp bead.
2. the drive control circuit of display module according to claim 1, which is characterized in that the green lamp bead and blue
Lamp bead shares power supply.
3. the drive control circuit of display module according to claim 1, which is characterized in that the green lamp bead is corresponding
The supply voltage of the supply voltage of power supply power supply corresponding with blue lamp bead is equal or different.
4. a kind of display module, which is characterized in that including the first power supply, second source, feux rouges driving IC modules, green light driving IC
Module, blu-ray drives IC modules, at least one LED and switch module, the LED includes red, green, blue tri coloured lantern pearl, described red
Optical drive IC modules one end is connected to the first power supply, and the other end is connected to the anode of red lamp bead, and the green light drives IC modules
And the blu-ray drives IC modules share the second source, and are correspondingly connected to the anode of green lamp bead, blue lamp bead, it is red
The cathode of lamp bead, green lamp bead and blue lamp bead is all connected to switch module, the switch module ground connection, and passes through control signal
The conducting and disconnection of switch module are controlled, the supply voltage of first power supply is less than the supply voltage of the second source.
5. display module according to claim 4, which is characterized in that the red lamp bead of multiple LED, green lamp bead and blue
The cathode of lamp bead shares a switch module.
6. display module according to claim 4 or 5, which is characterized in that the switch module is managed for N-MOS, N-MOS pipes
Grid receive control signal, drain electrode connects the cathode of red lamp bead, blue lamp bead, green lamp bead, source electrode ground connection.
7. a kind of display module, which is characterized in that including the first power supply, second source, third power supply, feux rouges driving IC modules,
Green light driving IC modules, blu-ray drives IC modules, at least one LED and switch module, the LED include red, green, blue tri coloured lantern
Pearl, described feux rouges driving IC modules one end are connected to the first power supply, and the other end is connected to the anode of red lamp bead, and the green light drives
Dynamic IC modules one end is connected to second source, and the other end is connected to the anode of green lamp bead, described blu-ray drives IC modules one end
Third power supply is connected to, the other end is connected to the anode of blue lamp bead, and the cathode of red lamp bead, green lamp bead and blue lamp bead is equal
It is connected to switch module, the switch module ground connection, and pass through the conducting and disconnection for controlling Signal-controlled switch component, described the
The supply voltage of one power supply is less than the supply voltage of the second source, and less than the supply voltage of third power supply.
8. display module according to claim 7, which is characterized in that the red lamp bead of multiple LED, green lamp bead and blue
The cathode of lamp bead shares a switch module.
9. display module according to claim 7, which is characterized in that the supply voltage of the second source and third power supply
It is equal or different.
10. according to claim 7-9 any one of them display modules, which is characterized in that the switch module is managed for N-MOS,
The grid of N-MOS pipes receives control signal, and drain electrode connects the cathode of red lamp bead, blue lamp bead, green lamp bead, source electrode ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721646296.XU CN207602195U (en) | 2017-12-01 | 2017-12-01 | Display module and its drive control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721646296.XU CN207602195U (en) | 2017-12-01 | 2017-12-01 | Display module and its drive control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207602195U true CN207602195U (en) | 2018-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721646296.XU Expired - Fee Related CN207602195U (en) | 2017-12-01 | 2017-12-01 | Display module and its drive control circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN207602195U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112843486A (en) * | 2021-01-22 | 2021-05-28 | 聊城市孩室宝家俱有限公司 | Health screen display control system for improving amblyopia by vision health management book clip |
| CN113012625A (en) * | 2020-08-20 | 2021-06-22 | 重庆康佳光电技术研究院有限公司 | LED display circuit and LED display device |
-
2017
- 2017-12-01 CN CN201721646296.XU patent/CN207602195U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113012625A (en) * | 2020-08-20 | 2021-06-22 | 重庆康佳光电技术研究院有限公司 | LED display circuit and LED display device |
| CN112843486A (en) * | 2021-01-22 | 2021-05-28 | 聊城市孩室宝家俱有限公司 | Health screen display control system for improving amblyopia by vision health management book clip |
| CN112843486B (en) * | 2021-01-22 | 2023-11-21 | 聊城市孩室宝家俱有限公司 | Health screen display control system for improving amblyopia by vision health management book clip |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 |
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| CF01 | Termination of patent right due to non-payment of annual fee |