Backlit vs. Backlight — What's the Difference?

Backlit objects, such as keyboards or displays, gain enhanced visibility and contrast by being illuminated from behind. This illumination method is especially effective in low-light conditions, making details sharper and more distinguishable. On the other hand, a backlight is the actual light source positioned behind the object or screen, casting light through it to ensure it is visible in various lighting conditions.

Backlit displays use backlights to achieve their illuminated effect, creating an easier viewing experience, especially in dim environments. This technique reduces eye strain and improves the overall usability of devices like smartphones and laptops. Conversely, the term backlight specifically refers to the technology or mechanism, such as LED or fluorescent lights, used to illuminate these displays from behind.

While a backlit feature in devices is commonly touted as a selling point for its ability to enhance user interaction with the device, the backlight itself is a critical component that determines the brightness, color accuracy, and energy efficiency of the display. Thus, while consumers may look for backlit devices, the quality and type of backlight used are equally significant for optimal performance.

In photography, a backlit subject is often used to create a silhouette effect or to highlight the outline of the subject with a bright background. Meanwhile, photographers may use a backlight (or several backlights) strategically placed behind the subject to achieve this desired lighting effect, showcasing the versatility and creative potential of backlighting in visual arts.

Backlit keyboards offer the advantage of typing in low light, making it easier to see the keys. The backlight in this context refers to the LED lights or another lighting mechanism beneath the keys, which illuminates the letters and symbols on the keyboard, facilitating typing accuracy and speed in dim settings.