ghosting

Analysis of LCD Screen Ghosting Phenomenon: Understanding, Recognition, and Scientific Prevention

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Analysis of LCD Screen Ghosting Phenomenon: Understanding, Recognition, and Scientific Prevention

Ghosting is generally divided into two types: short-term ghosting (temporary ghosting) and long-term ghosting (permanent ghosting, also known as “burn-in”). They have different causes and properties, and understanding their differences helps us respond more scientifically. Short-term ghosting: a reversible ion accumulation phenomenon, is a normal physical occurrence that can happen on all LCD screens and … Read more

CH32V003F4P6 Microcontroller: Completely Eliminate Ghosting in 74HC164 Driven Seven-Segment Displays

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CH32V003F4P6 Microcontroller: Completely Eliminate Ghosting in 74HC164 Driven Seven-Segment Displays

Many developers using the serial-parallel driving CMOS integrated circuit74HC164 have reported ghosting (segments that should not be lit are slightly glowing). It is better to switch to74HC595. However, it is possible to achieve ghost-free operation using74HC164 to drive seven-segment displays with the synchronous serial port of the STM32F103 microcontroller. The STM32F103 microcontroller is limited in … Read more

Driving 7-Segment Displays with 74HC164 and 74HC138 Using Serial Communication (Part 2)

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Driving 7-Segment Displays with 74HC164 and 74HC138 Using Serial Communication (Part 2)

Using analog serial port to drive74HC164, there is always a slight glow in segments that should not be lit, commonly referred to as ghosting, which is particularly noticeable at night. However, using serial port driving yields much better results; when external light is dim, ghosting is slightly visible but does not significantly affect viewing. This … Read more