CN109887462A - A kind of one wire system LED display control system - Google Patents
A kind of one wire system LED display control system Download PDFInfo
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- CN109887462A CN109887462A CN201910276718.6A CN201910276718A CN109887462A CN 109887462 A CN109887462 A CN 109887462A CN 201910276718 A CN201910276718 A CN 201910276718A CN 109887462 A CN109887462 A CN 109887462A
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- led chip
- integrated driving
- driving led
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Abstract
The invention discloses a kind of one wire system LED display control systems; it specifically includes for receiving video source and control the master controller of signal, the power module for powering for control signal modulator, the control signal and data signal for receiving master controller and be modulated into the signal modulator of current signal, the integrated driving LED chip that the electric current that is used to receive demodulates, the conducting wire for being used to transmit electric current and data, and the strap for fixing and protecting each integrated driving LED chip.Control signal and data signal loading to power supply line is formed current carrier with current-modulation technology by the system, integrated driving LED chip again demodulates current carrier, designs with the display cabling that therefore system can greatly simplify LED chip in LED display currently on the market of pulse width modulation control LED chip.
Description
Technical field
The present invention relates to LED screen construction and control field more particularly to a kind of one wire system LED display control systems.
Background technique
LED display technique reaches its maturity at present, and is widely used in daily life, and the market demand is also increasingly
Greatly.But in conventional LED transparent screen, due to containing tri- LED lamp tubes of RGB, each LED lamp tube and the outer driving of screen in each pixel
Device is attached and controls with conducting wire, and each LED lamp tube needs a conducting wire, so cabling is various in entire display screen,
To each pixel of LED display, control is more complicated, causes many restrictions to the development of display screen.
Summary of the invention
According to the problem of cabling complexity inside LED display in the prior art, it is aobvious that the invention discloses a kind of one wire system LED
Display screen control system, specifically includes
For receiving video source and controlling the master controller of signal, for the power supply mould for control signal modulator power supply
Block, the control signal and data signal for receiving master controller are simultaneously modulated into the signal modulator of current signal, are used for
By integrated driving LED chip that the electric current received demodulates, the conducting wire for being used to transmit electric current and data, and for fixing
With the strap for protecting each integrated driving LED chip.
Wherein master controller is connected by solid conductor with control signal modulator, and power module passes through power supply line and control
Signal modulator is connected, and control signal modulator is connected by solid conductor with first integrated driving LED chip, integrated driving
It carries out head and the tail by solid conductor between LED chip and integrated driving LED chip to connect, the last one concatenated integrated driving
LED chip is connected with control signal modulation chip with solid conductor.And each integrated driving LED chip concatenated is in display screen
In can be attached with various cabling modes and shape.Strap is used to protect and fix the integrated driving LED of display screen
Chip and solid conductor.
The control signal modulator is the communication modulation chip of a high integration, when the control for receiving master controller
After signal and data-signal, it is modulated, creates modulation current source, and by data-signal and control signal loading in electric current
Modulated current signal is transferred to integrated driving LED chip by solid conductor by signal, i.e. control signal modulation chip fortune
It is that information source is powered and provided to multiple integrated driving LED chips with solid conductor.
The integrated driving LED chip is a addressable integrated driving LED chip, be integrated in chip LED lamp tube,
Electric current demodulator, the functional modules such as driver, the chip be used to receive power supply that dedicated modulation chip is sent by current source with
Data, and realize to the drive control for being integrated in RGB fluorescent tube in chip, while local power supply voltage is maintained using electric current, such as
Fruit needs higher voltage to drive LED, and voltage will be turned up in internal voltage regulator.
Further, control in signal modulator includes that multiple control signal modulates chip.
By adopting the above-described technical solution, a kind of one wire system LED display control system provided by the invention, the system
Middle to be controlled using solid conductor each LED chip, each signal modulation chip and multiple integrated driving LED chips form one
The concatenation circuit of a single conductor forms a display module.Respective pixel point is shown for driving.By multiple signal modulation chips
Spliced with the single conductor return circuit module of integrated driving LED chip composition, forms a complete display screen.With electric current tune
Control signal and data signal loading to power supply line is formed current carrier by technology processed.Integrated driving LED chip again carries electric current
Wave demodulation, with the display of pulse width modulation control LED chip.Therefore the system can greatly simplify currently on the market
The cabling design of LED chip in LED display.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of present system；
Fig. 2 is the schematic diagram of the one wire system cabling difference cabling mode of integrated driving LED chip in the present invention；
Fig. 3 is the implementation process schematic diagram of system in the present invention.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, with reference to the attached drawing in the embodiment of the present invention, to this
Technical solution in inventive embodiments carries out clear and complete description:
A kind of one wire system LED display control system as shown in Figure 1, including power module 101, master controller 102, control
Signal modulator 103 and one wire system display screen 104 processed.The control signal modulator 103 includes multiple signal modulators 108；
The one wire system display screen 104 includes integrated driving LED chip 105, solid conductor 106 and strap 107.Wherein power supply mould
Block 101 is connected with control signal modulator 103 by power supply line, and master controller 102 and control signal modulator 103 pass through conducting wire
It is connected, control signal modulator 103 is connected with integrated driving LED chip 105 by solid conductor 106, integrated driving LED chip
It is connected between 105 and integrated driving LED chip 105 by solid conductor 106.
Further, signal modulator 103, integrated driving LED chip 105, solid conductor 106 are controlled, is collectively formed one
A link circuit constitutes a minimum display module during forming circuit.Integrated driving LED chip 105 and integrated drive
Cabling mode between dynamic LED chip 105 is different.
Further, in single display module, master controller 102 by the module need video data signal to be shown and
Signal is controlled, control signal modulator 103 is sent to and passes through internal signal tune after control signal modulator 103 receives data
Signal coding is carrier signal by coremaking piece 108, then gives carrier signal transmission to first integrated driving LED core by conducting wire
Piece 105.After integrated driving LED chip 105 receives carrier signal, carrier signal is demodulated, the signal difference after demodulation
For DC current signal and ac current signal, DC current signal can charge to integrated driving LED chip 105, internal
Voltage regulator adjust automatically builtin voltage.Binary data is converted to after AC portion is demodulated at the same time, and is passed through
Duty ratio modulation is internally integrated the on and off of LED to control, to reach the control to video level.When one width pixel of display
When putting more picture, multiple display modules are spliced, are then cut every frame video image by master controller 102
It cuts, and is effectively distributed, be sent to each display module through control signal modulator 103 and be finally completed the big display of video.
As shown in Fig. 2, first integrated driving LED chip 105 is arranged in rising for display screen in single display screen module
Beginning receives the current signal from control signal modulator 103, then passes through a conducting wire and next integrated driving LED
Chip 105 is connected, well-regulated between integrated driving LED chip 105 to be arranged, and is only connected with a conducting wire.With
Connection integrated driving LED chip 105 increases, and the increase of load, conducting wire also can be broadening, to guarantee the increase conducting wire with electric current
It is not damaged.The cabling mode wherein connected includes being arranged successively from display screen top to bottom end, then goes back to top again, most
The snake type cabling arrangement exported afterwards from top, such as the connection type one in Fig. 2.It further include being arranged successively on earth from display screen top
End, then from bottom end fold 90 degree be aligned to from the diagonal line of starting point, behind carry out snakelike cabling again, finally from starting point side
Output is connected with dedicated modulation chip, connection type two in specific cabling such as Fig. 2.
Each display module video mapping relations are illustrated in figure 3, since display screen uses one wire system cabling, it is contemplated that power
Limitation, single display module can not show the complete image of a width, so we will when the image slices vegetarian refreshments of display is more
Multiple display sub-modules are spliced, and cutting and allocation map are carried out to every frame image by master controller 102, after cutting
Image frame is transferred to each modulator in control signal modulator 103 respectively, by each modulators modulate corresponding data signal,
And modulated signal is transferred to by display screen submodule by conducting wire.Then the picture splicing that each display sub-module is shown is arrived
The complete picture of a width is just constituted together.When the picture photo vegetarian refreshments of display is more, more pure and fresh, required display sub-module is got over
It is more.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (3)
1. a kind of one wire system LED display control system, characterized by comprising: multiple one wire system display screens (104), control are more
The control signal modulator (103) and the control control signal modulator that a one wire system display screen (104) works normally
(103) master controller (102) to work, the control signal modulator (103) are connected with power module (101)；
The one wire system display screen (104) includes solid conductor (106) and multiple integrated driving LED chips (105), described single
Multiple integrated driving LED chip (105) head and the tail connections are formed series circuit configuration by conducting wire (106), wherein series circuit configuration
First integrated driving LED chip and the last one integrated driving LED chip be connected structure with control signal modulator (103)
At single display module；The control signal modulator (103) includes multiple signal modulation chips (108), a signal modulation
Chip (108) controls the work of an one wire system display screen (104).
2. a kind of one wire system LED display control system according to claim 1, it is further characterized in that: first is integrated
Driving LED chip (105) is connected in series with next integrated driving LED (105) by solid conductor (106), each integrated
Successively single line concatenates, to the last an integrated driving LED chip connection finishes for driving LED chip (105), the last one is integrated
Driving LED chip is connect with signal modulation chip (108) by solid conductor (106).
3. a kind of one wire system LED display control system according to claim 1, it is further characterized in that: by single single line
Display screen (104) processed is connected, with the signal modulation chip (108) in control signal modulator (103) again by multiple one wire systems
Display screen (104) splicing composition display system, by current modulating method using solid conductor (106) to one wire system display screen
(104) display control is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910276718.6A CN109887462A (en) | 2019-04-08 | 2019-04-08 | A kind of one wire system LED display control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910276718.6A CN109887462A (en) | 2019-04-08 | 2019-04-08 | A kind of one wire system LED display control system |
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| Publication Number | Publication Date |
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| CN109887462A true CN109887462A (en) | 2019-06-14 |
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Family Applications (1)
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| CN201910276718.6A Pending CN109887462A (en) | 2019-04-08 | 2019-04-08 | A kind of one wire system LED display control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110599932A (en) * | 2019-07-29 | 2019-12-20 | 莆田城厢振达宸贸易有限公司 | Loose joint LED display screen for single wire system circulation |
| CN112489588A (en) * | 2019-08-24 | 2021-03-12 | 华源智信半导体(深圳)有限公司 | Dynamic address allocation to drivers in a display device |
| US11217153B1 (en) | 2020-09-18 | 2022-01-04 | Huayuan Semiconductor (Shenzhen) Limited Company | Display device with distributed driver circuits and shared multi-wire communication interface for dimming data |
| WO2024037017A1 (en) * | 2022-08-16 | 2024-02-22 | 华源智信半导体(深圳)有限公司 | Distributed driver circuit and display device having same |
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| CN110599932A (en) * | 2019-07-29 | 2019-12-20 | 莆田城厢振达宸贸易有限公司 | Loose joint LED display screen for single wire system circulation |
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| WO2024037017A1 (en) * | 2022-08-16 | 2024-02-22 | 华源智信半导体(深圳)有限公司 | Distributed driver circuit and display device having same |
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Application publication date: 20190614 |