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A vanishing voltage level control method, display method, system and display device

A technology of voltage level and control method, which is applied to static indicators, instruments, etc., can solve problems such as the inability to adjust the voltage level of shadow elimination according to the actual situation, the inability to effectively eliminate the shadow elimination effect, and insufficient expandability of the chip to achieve shadow elimination The effect is obvious, the LED display effect is good, and the effect of easy adjustment

Active Publication Date: 2021-10-01
PURESEMI CO LTD
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Problems solved by technology

[0008] Aiming at the problems in the prior art that the shadow elimination effect in the LED display by preset voltage is not good, cannot be effectively eliminated or the shadow elimination effect is not obvious, the voltage level of the shadow elimination cannot be adjusted according to the actual situation, and the chip expandability is insufficient, etc., the present invention Provide a method for controlling the level of erasing voltage, a display method, a system, and a display device. By setting an external control card, the level of erasing voltage can be set, and the erasing operation can be performed during frame switching, so as to better protect display signals from not being generated. Ghosting, at the same time, the external control method is convenient for register modification, and the flexibility is very high

Method used

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  • A vanishing voltage level control method, display method, system and display device
  • A vanishing voltage level control method, display method, system and display device
  • A vanishing voltage level control method, display method, system and display device

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Embodiment

[0036] This embodiment discloses a LED row driver chip shadow elimination system. Taking external control to realize 138 decoding as an example, the shadow elimination voltage level setting and chip switching are performed through different coding methods to realize the shadow elimination of the LED display array, and the shadow elimination voltage Adjustable level, high practicality.

[0037] Such as image 3 As shown, the system includes an external control card, a row driver chip, a column driver chip, and an LED display array. The row driver chip and the column driver chip provide signals for driving the LED display array, which are row scan signals and column scan signals, and the external control The card is connected with the row driver chip, and the external control card controls the output of the row scan signal of the row driver chip, and further realizes shadow elimination control.

[0038] Taking 138 decoding as an example, the external control card includes five si...

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Abstract

The invention discloses a method for controlling an erasing voltage level, a display method, a system and a display device, and belongs to the technical field of LED row drive chips. Aiming at the problems in the prior art that the shadow elimination effect in the LED display by preset voltage is not good, cannot be effectively eliminated or the shadow elimination effect is not obvious, the voltage level of the shadow elimination cannot be adjusted according to the actual situation, and the chip expandability is insufficient, etc., the present invention Provide a method for controlling the voltage level of disappearance. By setting the external control card, the voltage level of disappearance can be set to realize the disappearance operation during frame switching, which can better protect the display signal from ghosting, and at the same time, the external control method is convenient. For deposit modification, the flexibility is very high.

Description

technical field [0001] The invention relates to the technical field of LED row driving chips, and more specifically, to a method for controlling an erasure voltage level, a display method, a system and a display device. Background technique [0002] With the development of society, LED gradually shows its various uses. Its excellent screen characteristics enable it to be widely used in various fields, and can be used in different scenarios such as outdoor large screens and indoor interactive machines. But on the traditional LED display, due to the parasitic capacitance of the LED tube itself, the LED parasitic capacitance charges itself when it is turned on, and after it is turned off, there will still be bright spots when it is not displayed. This phenomenon is usually called LED display. Ghosting will have a greater impact on user experience. [0003] LED ghosting usually refers to LED lamp beads that are not lit according to the preset, and will flicker on and off during...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 蒋召宇张若平高润芃何书专
Owner PURESEMI CO LTD
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