CN209015698U - A kind of LED display driver IC - Google Patents
A kind of LED display driver IC Download PDFInfo
- Publication number
- CN209015698U CN209015698U CN201822146941.2U CN201822146941U CN209015698U CN 209015698 U CN209015698 U CN 209015698U CN 201822146941 U CN201822146941 U CN 201822146941U CN 209015698 U CN209015698 U CN 209015698U
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- led display
- signal input
- amplifier
- circuit
- display driver
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Abstract
The utility model proposes a kind of LED display driver ICs, including enable signal amplifier comprising the first row control signal input A_I and the first row control signal output A_O；Second line amplifier comprising the second row control signal input B_I and the second row control signal output B_O；MOS drive circuit, the first of MOS drive circuit is connected with enable signal input terminal OE_I, the first row control signal input A_I and the second row control signal input B_I respectively to third road input terminal, its first to fourth tunnel MOS drive circuit output end is connect with first to fourth road input terminal of power MOS circuit, power MOS circuit has eight tunnel power outputs of power MOS circuit, is connected in parallel two-by-two as power MOS circuit output end OUT1 ~ OUT4.The utility model proposes LED display driver IC, integrated level is high, and reliable performance is stablized, and can reduce the production cost of LED display driving circuit.
Description
Technical field
The utility model relates to a kind of technical field of LED display, more specifically, being related to a kind of LED display driving core
Piece.
Background technique
LED display (LED display) is made of LED module panel small one by one, for showing text, figure
The equipment of the various information such as picture, video, video signal.Why in widespread attention LED display is and is rapidly developed, and is
It is inseparable with advantage possessed by itself.These advantages sum up: brightness is high, operating voltage is low, small power consumption, large size
Change, the service life is long, impact resistance and performance are stablized.The development prospect of LED is extremely wide, just towards more high brightness, more high weather resistance,
Higher luminous density, higher uniformity of luminance, reliability, panchromaticization direction are developed.
Common LED display is divided into single double-colored and colorful display screen, but its driving mostly uses greatly multiple chip portfolios
It completes, causes chip integration lower in this way, reliability is poor, and system is unstable, and cost is excessively high and loses and strives power unexpectedly.
Utility model content
The utility model provides a kind of LED display driver IC, it is intended to solve LED display in the prior art and drive core
Piece excessively causes integrated level low, and reliability is poor, the problem that system is unstable and cost is excessively high.In order to overcome the above problems, originally
Utility model provides a kind of integrated level height, installs more convenient, the lower LED display driver IC of later maintenance cost.
To realize the above technical purpose, the technical solution of the utility model is:
The utility model discloses a kind of LED display driver ICs, comprising:
Enable signal amplifier comprising enable signal input terminal OE_I and enable signal output end OE_O；
First line amplifier comprising the first row control signal input A_I and the first row control signal output
A_O；
Second line amplifier comprising the second row control signal input B_I and the second row control signal output
B_O；
MOS drive circuit, the first of the MOS drive circuit input with the enable signal respectively to third road input terminal
End OE_I, the first row control signal input A_I and the second row control signal input B_I are connected, the MOS drive circuit
With first to fourth tunnel MOS drive circuit output end；
Power MOS circuit, first to fourth road input terminal of power MOS circuit are connected respectively the MOS driving
First to fourth road output end of circuit, power MOS circuit have eight tunnel power outputs of power MOS circuit, the power
Eight tunnel power outputs of MOS circuit are connected in parallel two-by-two as OUT1 ~ OUT4 power MOS circuit output end.
Further, the driving chip further includes delay protection circuit, the input terminal connection of the delay protection circuit
The first row signal input part A_I, output end connect the delay protection input terminal of the MOS drive circuit.
Further, the driving chip further includes latch signal amplifier, and the latch signal amplifier includes latching
Signal input part LE_I and latch signal output end LE_O.
Further, the driving chip further includes clock signal amplifier, and the clock signal amplifier includes clock
Signal input part CLK_I and clock signal output terminal CLK_O.
Further, the driving chip further includes that data-signal negates amplifier, and the data-signal negates amplifier
Output end/DA_O is negated including data signal input DA_I and data-signal.
Further, the driving chip further includes 128 bit shift data repeaters, the 128 bit shift data
Signal amplifier includes 128 bit shift data repeater output end DA_128O, 128 bit shift data repeaters
Input terminal connects the data signal input DA_I.
Further, the driving chip further includes two power supply positive input VCC.
Further, the driving chip further includes power ground end GND.
The utility model provides a kind of LED display driver IC, the beneficial effect is that:
Middle LED display driver IC, which is different from the prior art, excessively causes integrated level low, and reliability is poor, and system is unstable
It is fixed, the problem that maintenance difficulties are big and cost is excessively high.A kind of LED display driver IC provided by the utility model has integrated level
Height, installation is more convenient, and later maintenance is relatively easy to, and reduces production cost, therefore have very big economic value.
Detailed description of the invention
Fig. 1 is the logical construction schematic diagram of the utility model embodiment LED display driver IC；
Fig. 2 is the package structure diagram of the utility model embodiment LED display driver IC.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
In conjunction with Fig. 1 and Fig. 2, specific embodiment of the present utility model is described in detail, but any limit is not made to technical solution
It is fixed.
The utility model embodiment, in a kind of structure of LED display driver IC, comprising:
Enable signal amplifier 10 comprising enable signal input terminal OE_I and enable signal output end OE_O；
First line amplifier 11 comprising the first row control signal input A_I and the first row control signal output
Hold A_O；
Second line amplifier 12 comprising the second row control signal input B_I and the control signal output of the second row
Hold B_O；
MOS drive circuit 13, MOS drive circuit 13 first to third road input terminal respectively with enable signal input terminal
OE_I, the first row control signal input A_I and the second row control signal input B_I are connected, and MOS drive circuit 13 has
First to fourth tunnel MOS drive circuit output end；
Power MOS circuit 14, first to fourth road input terminal of power MOS circuit 14 are connected respectively MOS driving
First to fourth road output end of circuit 13, power MOS circuit 14 have eight tunnel power outputs of power MOS circuit, power
Eight tunnel power outputs of MOS circuit 13 are connected in parallel two-by-two as OUT1 ~ OUT4 power MOS circuit output end.
Driving chip further includes delay protection circuit 15, the input terminal connection the first row signal input of delay protection circuit 15
A_I is held, output end connects the delay protection input terminal of MOS drive circuit 13.
Driving chip driving chip further includes latch signal amplifier 16, and latch signal amplifier 16 includes that latch signal is defeated
Enter to hold LE_I and latch signal output end LE_O.
Driving chip driving chip further includes clock signal amplifier 17, and clock signal amplifier 17 includes that clock signal is defeated
Enter to hold CLK_I and clock signal output terminal CLK_O.
Driving chip driving chip further includes that data-signal negates amplifier 18, and it includes number that data-signal, which negates amplifier 18,
Output end/DA_O is negated according to signal input part DA_I and data-signal.
Driving chip further includes that 128 bit shift data repeater, 19,128 bit shift data repeater 19 includes
128 bit shift data repeater output end DA_128O, 128 bit shift data repeater input terminals connect data
Signal input part DA_I.
Driving chip further includes two power supply positive input VCC.
Driving chip further includes power ground end GND.
It further illustrates:
In the LED display driver IC of the utility model, have 6 tunnel input signals such as: A_I, B_I, OE_I, LE_I,
CLK_I,DA_I ；There are 7 tunnel output signals such as: A_O, B_O, OE_O, LE_O, CLK_O ,/DA_O, DA128O；It further include 4 road function
Rate MOS circuit output end: OU1, OUT2, OUT3, OUT4；And power supply and ground connection.
The LED display driver IC structure of the utility model are as follows:
Input signal A_I is transported to the first line amplifier from the first row control signal input A_I, amplifies through signal
It is output to the first row control signal output A_O again afterwards, while input signal A_I is defeated from the first row control signal input A_I
It is sent to delay protection circuit input terminal and MOS drive circuit input terminal.
Input signal B_I is transported to the second line amplifier from the second row control signal input B_I, amplifies through signal
It is output to the second row control signal output B_O again afterwards, while input signal B_I is defeated from the second row control signal input B_I
Enter the input terminal of MOS drive circuit.
Enable signal OE_I is transported to enable signal amplifier from enable signal input terminal OE_I, after signal amplifies again
It is output to enable signal output end OE_O, while enable signal OE_I is transported to MOS driving electricity from enable signal input terminal OE_I
Road input terminal.
Latch signal LE_I is connected to latch signal amplifier from latch signal input terminal LE_I, exports again through signal amplification
To latch signal output end LE_O.
Clock signal clk _ I is transported to clock signal amplifier from clock signal input terminal CLK_I, after signal amplifies again
It is output to clock signal output terminal CLK_O.
Data-signal DA_I is transported to data-signal from data signal input DA_I and negates amplifier, is amplified and is negated
After be output to data-signal and negate output end/DA_O, data-signal DA_I is transported to simultaneously from data signal input DA_I
128 bit shift data repeater input terminals, and it is output to 128 bit shift data repeater output end DA_128O.
The utility model provides a kind of LED display driver IC, the beneficial effect is that:
Middle LED display driver IC, which is different from the prior art, excessively causes integrated level low, and reliability is poor, and system is unstable
It is fixed, the problem that maintenance difficulties are big and cost is excessively high.A kind of LED display driver IC provided by the utility model has integrated level
Height, installation is more convenient, and later maintenance is relatively easy to, and reduces production cost, therefore have very big economic value.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (8)
1. a kind of LED display driver IC characterized by comprising
Enable signal amplifier comprising enable signal input terminal OE_I and enable signal output end OE_O；
First line amplifier comprising the first row control signal input A_I and the first row control signal output A_O；
Second line amplifier comprising the second row control signal input B_I and the second row control signal output B_O；
MOS drive circuit, the MOS drive circuit first to third road input terminal respectively with the enable signal input terminal
OE_I, the first row control signal input A_I and the second row control signal input B_I are connected, the MOS drive circuit tool
There is first to fourth tunnel MOS drive circuit output end；
First to fourth road input terminal of power MOS circuit, power MOS circuit is connected respectively the MOS drive circuit
First to fourth road output end, power MOS circuit has eight tunnel power outputs of power MOS circuit, power MOS electricity
The eight tunnel power outputs on road are connected in parallel two-by-two as OUT1 ~ OUT4 power MOS circuit output end.
2. the LED display driver IC according to claim 1, which is characterized in that the driving chip further includes prolonging
When protect circuit, the input terminal of the delay protection circuit connects the first row signal input part A_I, and output end connects institute
State the delay protection input terminal of MOS drive circuit.
3. the LED display driver IC according to claim 1, which is characterized in that the driving chip further includes lock
Signal amplifier is deposited, the latch signal amplifier includes latch signal input terminal LE_I and latch signal output end LE_O.
4. LED display driver IC according to claim 1, which is characterized in that the driving chip further includes clock
Signal amplifier, the clock signal amplifier include clock signal input terminal CLK_I and clock signal output terminal CLK_O.
5. LED display driver IC according to claim 1, which is characterized in that the driving chip further includes data
Signal negates amplifier, and it includes that data signal input DA_I and data-signal negate output that the data-signal, which negates amplifier,
End/DA_O.
6. LED display driver IC according to claim 5, which is characterized in that the driving chip further includes 128
Shifted data signal amplifier, the 128 bit shift data repeater are exported including 128 bit shift data repeaters
DA_128O is held, 128 bit shift data repeater input terminals connect the data signal input DA_I.
7. LED display driver IC according to claim 1, which is characterized in that the driving chip further includes two
Power supply positive input VCC.
8. LED display driver IC according to claim 1, which is characterized in that the driving chip further includes power supply
Ground terminal GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822146941.2U CN209015698U (en) | 2018-12-20 | 2018-12-20 | A kind of LED display driver IC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822146941.2U CN209015698U (en) | 2018-12-20 | 2018-12-20 | A kind of LED display driver IC |
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| Publication Number | Publication Date |
|---|---|
| CN209015698U true CN209015698U (en) | 2019-06-21 |
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ID=66843903
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822146941.2U Active CN209015698U (en) | 2018-12-20 | 2018-12-20 | A kind of LED display driver IC |
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| CN (1) | CN209015698U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559677A (en) * | 2018-12-20 | 2019-04-02 | 深圳市羽微电子有限公司 | A kind of LED display driver IC |
-
2018
- 2018-12-20 CN CN201822146941.2U patent/CN209015698U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559677A (en) * | 2018-12-20 | 2019-04-02 | 深圳市羽微电子有限公司 | A kind of LED display driver IC |
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