| Normal White LEDs | Normal white LEDs achieve white light by mixing blue LED light with yellow phosphor. They feature low power consumption due to their extremely high efficiency in converting power into light, and are relatively inexpensive due to the small number of constituent materials used.On the other hand, the red light component is small, so the coloring performance of the red area when transmitted through an LCD is not high.

Solution: Choose dimmer switches that are compatible with LED bulbs. Make sure to check the packaging or consult an electrician before installation. Both the bulbs and the switch need to be compatible with each other – if you’re using a legacy dimmer switch from your incandescent days, it might not work at all with LEDs, even if they are dimmable. Non-dimmable LEDs won’t dim at all.

Cause: Insufficient power supply to your LED lights, especially when using multiple appliances, can lead to flickering issues.

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Direct-lit The direct local dimming method allows high-contrast, clear viewing without light in areas other than the text.

LED lights have become the natural choice for homeowners due to their energy efficiency and long-lasting performance – and the small matter of most incandescent bulbs being banned! But they do have one small drawback compared to filament bulbs – they do sometimes flicker. Flickering certainly affected tungsten and halogen bulbs when they were on their way out. But it might not have been quite as noticeable as LEDs, which tend to be either on or off, rather than bright or dim.

In short, there are quite a few potential reasons for LEDs flickering. We thought we’d put together the most likely reasons behind your flickering LEDs – hopefully you’ll get the bottom of it.

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With LED bulbs, flickering can be anything from intermittently switching off every so often to a full-on stroboscopic effect. Diagnosis isn’t always simple, either, as the problem could be from the diodes themselves, the internal electronics of the bulb construction, the wiring, the switch or the power supply.

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| Normal white light | Normal white light with blue light + yellow phosphor has a low red component light, so red and reddish dislpay on the screen may appear dull.

A method in which LEDs are placed directly under the LCD display and light is directed toward the user. Features • Aggregation of area emission of each LED • The number of LEDs increases depending on the display size and the illumination area of each LED. • The brightness of the entire display can be increased according to the number of LEDs. Local dimming technology • By controlling light emission finely for each area, it is possible to light only necessary areas efficiently. • High-contrast and high-definition display is possible by de-illuminating areas where there is no display.

| Wide gamut white light | Wide gamut white light with blue light + green phosphor + red phosphor makes screen colors look more vivid than normal white light because of its high red component.

Display devices have been used for many years as a means of HMI (Human Machine Interface) to connect humans and machines interactively, and their usage are still expanding. Automotive interiors are no exception to this trend, with an increasing amount of information being displayed,ranging from important information for safe driving to entertainment information, and this trend will continue to evolve further in the future.

Solution: Replace the flickering bulbs with high-quality LED bulbs from reputable manufacturers. Look for bulbs with high-quality drivers that can handle the load and operating temperature effectively.

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Solution: You may need to upgrade your consumer unit to accommodate higher power demands. Consult an electrician to assess your home’s electrical capacity and install additional circuits if needed.

Solution: Invest in high-quality dimmer switches designed specifically for dimmable LED bulbs. Opt for reputable brands and consult an electrician for guidance on compatible dimmer switches.

By identifying the cause of your LED light flickering issue and trying these solutions, you can hopefully enjoy uninterrupted and steady lighting in your home. Remember, if you are unsure about any electrical work, always consult a professional electrician to ensure safety and expert guidance.

Edge-lit/Light-guide Slight light escapes from the unlettered black background, because the light guide plate behind the LCD uniformly illuminate.

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Cause: When a circuit is overloaded with too many electrical appliances or devices, it can cause voltage fluctuations, resulting in LED lights flickering.

Solution: Consult an electrician to assess and stabilise the voltage in your home. They can install stabilisers or voltage regulators, if needed, to mitigate flickering caused by voltage fluctuations.

Cause: Certain types of switches or controls, such as occupancy sensors or timers, may not be designed to work effectively with LED lights, leading to flickering.

Solution: Use switches and controls specifically designed for LED lighting systems. Consult with an electrician to determine the most suitable switch or control options for your LED lights and have them installed professionally if needed.

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Cause: Extreme weather conditions, such as electrical storms or power surges, can lead to voltage fluctuations and flickering LED lights, especially when outdoors.

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We have LED light sources suitable for both edge-lit and direct-lit backlight. The appropriate light source can be selected according to the application and specifications.

LCDs are made visible as a luminescent display by transmitting light from the back of the LCD through the backlight.　The following describes two typical layout for LEDs, which are the light source of the backlight, used in automotive applications.

Cause: Poor electrical connections can disrupt the flow of electricity and result in LED light flickering. This might be more than just loose connections, and could be something more systemic.

The LCD (Liquid Crystal Display) screen of a meter or entertainment system is a full-color display, with white LED backlight light passing through the LCD's color filter (the three primary colors of light: R: red, G: green, and B: blue).Even if the display device (LCD) is the same, the light source used for the backlight changes the display quality and power consumption characteristics.

LED light is emitted from the side to the light guide plate placed under the LCD,　and the light is extracted from the plate upward (toward the user).　 Features • The entire backlight emits light from the surface.　 • Relatively small number of LEDs to be used = low power consumption • Less uneven brightness and uniform appearance　(The backlight also emits light even in areas where there is no display.)

Solution: Avoid using multiple high-power appliances simultaneously on the same circuit. Distribute the load by connecting power-hungry devices to a different circuit. If needed, consult an electrician to install additional circuits to accommodate your power needs.

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Solution: Replace the LED bulbs in your fixtures with new and reliable ones. LEDs do last a very long time, but they are not eternal.

| Wide Color Gamut White LED | White light is achieved by mixing blue LED light with green and red phosphors.The LED light component matches the LCD color filter, resulting in particularly vivid coloring around the red area, expanding the color gamut and improving the quality. On the other hand, the power consumption tends to increase due to the lower power-to-light conversion efficiency compared to normal white LEDs.

Solution: If you’ve eliminated all the other possibilities in this list, there could be something wrong with the electrics in your home, and it could potentially need a rewire. The LEDs flickering might just be a symptom. Contact an electrician to do some diagnostic tests.

Solution: Carefully check and tighten all wiring connections to ensure a secure fit. If necessary, seek professional assistance from an electrician to ensure proper and safe wiring. You should be able to check the wiring in the switch yourself if you’re reasonably competent around electrics. Read our guide to changing a light switch, but try loosening and re-tightening the wires instead of changing the whole unit.

Solution: Install surge protectors or whole-house surge protection systems to protect your electrical system from voltage spikes during severe weather. These devices can minimise flickering caused by external factors.

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