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Hello everyone, today we are going to learn about the screen of laptops

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Laptop screens are divided into LCD, LED and OLED screens

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The structure of LCD screen and LED screen is basically the same

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The difference between them is the backlight

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The LCD screen uses cold cathode lamp as the backlight of the screen

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The circuit board that drives the cold cathode lamp to emit light,

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we call it a high voltage board, or inverter

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This kind of lamp has a defect,

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that is, after a long time of use, black circles will appear

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on both ends of the lamp, which is easy to age

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Laptops with this LCD screen will mostly

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have a black screen after being dropped,

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because the lamp tube is broken, resulting in no backlight

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This is the common fault of LCD screen

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The LED screen uses LED light strips as the backlight of the screen

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This little circuit board that drives the LED light is called a boost circuit

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The structures of LCD screen and LED screen are basically the same,

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but their backlight modules are different

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One uses cold cathode tubes and the other uses LED strips

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The OLED screen doesn't have an independent backlight,

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it is self-illuminating by driving the liquid crystal through current

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This screen has more vivid colors and

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is suitable for flexible screens and curved screens

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Well, here is the difference between LCD, LED and OLED screens