To determine whether a computer screen is LCD or OLED, you can start from the following aspects: First, the principle of light emission
LCD (Liquid Crystal Display): LCD screens mainly rely on the backlight layer to emit light, which is usually composed of a large number of LED backlight lights that emit white light. Add a colored film on top of the white backlight layer, and white light can penetrate through this film to display color.
OLED (Organic Light Emitting Diode Display): OLED screens do not require a backlight layer, and each pixel is an organic compound light-emitting device that can independently emit light. When current passes through, these organic compounds emit light, directly displaying color. 2、 Display effect
Contrast: LCD screens have a backlight layer, and black is not pure black, resulting in relatively low contrast. When OLED screens display black, the pixels can be completely turned off and do not emit light, resulting in extremely high contrast and deep black.
Color and viewing angle: OLED screens are usually superior to LCD screens in terms of color saturation and viewing angle range, especially when viewed at large angles, OLED screens have less color and brightness attenuation. 3、 Thickness and weight
LCD screens: Due to the need for structures such as backlight and liquid crystal layers, LCD screens are typically thicker and heavier than OLED screens.
OLED screen: OLED screens have a relatively simple structure, without backlight and liquid crystal layers, so they can be made thinner and lighter. 4、 Energy consumption
LCD screen: No matter what content is displayed, the backlight layer needs to continuously emit light, so the energy consumption is relatively high.
OLED screen: Only the emitting pixels consume energy, and the energy consumption is extremely low when displaying black or dark content. 5、 Other features
Off screen display: Some computers using OLED screens support off screen display function, which means that simple information such as time and date can still be displayed even when the screen is turned off. OLED screens can individually control the emission of each pixel, while LCD screens cannot achieve this function.
Screen flicker: Long term viewing of OLED screens may cause eye fatigue or dryness, as OLED screens may experience slight flickering during operation. In contrast, LCD screens have less flickering phenomenon. 6、 View screen model or specifications
The most direct method is to determine whether the computer screen is LCD or OLED by examining its model or specifications. This can usually be found in the computer manual, official website, or display settings section of the system settings.
By comparing the principles of light emission, display effects, thickness and weight, energy consumption, and other features such as off screen display and screen flicker, it is possible to preliminarily determine whether the computer screen is LCD or OLED. Meanwhile, checking the screen model or specifications is also a direct way to confirm its type.