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LED dot matrix module circuit and display device consisting of same

A technology for display devices and LED lights, which can be used in static indicators, diodes to limit amplitude, and instruments, etc. It can solve problems such as module damage, display units or display screens with poor antistatic ability, and damage, so as to avoid accidental losses. The effect of prolonging the LED usage time

Inactive Publication Date: 2009-12-02
LEYARD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the commonly used LED dot matrix module circuit, when the LED dot matrix display module is working, the actual voltage is often greater than the rated working voltage due to various accidents, causing the module to be damaged.
In addition, the display unit or display screen composed of a general-purpose LED dot matrix module circuit has poor antistatic ability and is often damaged by static electricity.

Method used

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  • LED dot matrix module circuit and display device consisting of same
  • LED dot matrix module circuit and display device consisting of same
  • LED dot matrix module circuit and display device consisting of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: figure 1 It is an 8*8 dot matrix monochrome display module, the anodes of each row of LED light-emitting diodes are connected in parallel to form row line pins L1-L8, and the cathodes of each column of LED light-emitting diodes are connected in parallel to form column line pins R1-R8 , each LED light-emitting diode is connected in parallel with a protective tube. When working, if the voltage between the rows and columns exceeds the rated operating voltage, the TVS tube will be turned on. For example, the voltage between the first row and the first column is too high, then TVS1 will be turned on. LED1 is protected.

Embodiment 2

[0022] Embodiment 2: For the multi-color dot matrix module, a suitable protective tube is also connected in parallel on each LED diode. Since the rated operating voltages of LED light-emitting diodes of different colors are different, LED diodes of different colors are connected in parallel with different breakdown voltages. Protective tube. figure 2 It is a red and green two-color display module with 8*8 dot matrix. The anodes of each row of LED light-emitting diodes are connected in parallel to form row line pins L1-L8, the cathodes of each column of red LED light-emitting diodes are connected in parallel to form column line pins R1-R8, and the cathodes of each column of green LED light-emitting diodes are connected in parallel together Form the column line pins G1-G8, and connect a protection tube in parallel at both ends of each LED light-emitting diode. When working, if the voltage between the rows and columns exceeds the rated operating voltage, the TVS tube will be tur...

Embodiment 3

[0024] Example 3: image 3 It is an 8*8 dot matrix monochrome display module, each row shares a protective tube, such as TVS1, connected to the column line through diodes, such as D1, D2, D3, D4, D5, D6, where TVS1 and D1 are connected in series to protect LED1 , TVS1 and D2 in series protect LED2, TVS1 and D3 in series protect LED3, and so on.

[0025] For the multi-color dot matrix module, each LED light-emitting diode is also connected in parallel with a suitable protection tube and a series circuit of a diode. Since the rated working voltages of different colors of LED light-emitting diodes are different, different colors of LED diodes are connected in parallel with different strikes. Through voltage Zener diode or TVS tube.

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PUM

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Abstract

The invention relates to an LED dot matrix module circuit which can avoid accidental loss, lengthen LED service time and strengthen antistatic protection. The technical proposal of the invention is that a LED lamp is provided, the invention is characterized in that each LED lamp is in parallel connection with a Zener diode or a transient voltage suppressor or a series circuit of the Zener diode and the transient voltage suppressor. The invention also discloses a LED display device which is characterized in that each LED lamp of the LED dot matrix module is in parallel connection with the Zener diode or the transient voltage suppressor or a series circuit consisting of a general purpose diode and one out of the Zener diode and the transient voltage suppressor. The display device is an LED display unit or an LED display screen.The LED dot matrix module comprises a pure green module, a pure blue module, a double-color module and a full color module; wherein, the double-color module is the combination of red and green or red and blue, while the full color module is the combination of red, green and blue.

Description

technical field [0001] The invention belongs to the field of LED dot matrix module circuits, in particular to an LED dot matrix module circuit and a real device composed thereof. Background technique [0002] At present, the commonly used LED dot matrix module circuit and LED dot matrix display module often have the phenomenon that the actual voltage is greater than the rated working voltage due to various accidents when the LED dot matrix display module is working, resulting in damage to the module. In addition, the display unit or display screen composed of general-purpose LED dot matrix module circuits has poor antistatic ability and is often damaged by static electricity. Contents of the invention [0003] The object of the present invention is to provide an LED dot matrix module circuit and a display device composed thereof which can avoid accidental loss, prolong the service life of LEDs and enhance antistatic protection. Utilizing the characteristic that the impeda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32H03G11/02
Inventor 耿伟黄东安
Owner LEYARD
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