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Hello everyone, today we will learn about the composition of the laptop screen

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The screen of the laptop is mainly composed of a backlight circuit,

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a display signal processing circuit and a liquid crystal panel

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The LCD panel is the part that displays the signal

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The backlight circuit and display signal processing circuit

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are on a logic board below the screen

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The new logic board is thinner, and the old one is wider

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In the backlight circuit, there is a flex cable

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connected to the LED backlight inside the laptop screen,

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which is mainly used to light up the backlight

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If the backlight circuit does not work, it will cause the screen to be dark and black

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The display signal processing circuit mainly deals with the display signal

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transmitted from the mainboard through the screen line,

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and then sent to the liquid crystal panel through the flexible cable,

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so that the liquid crystal panel displays the processed image.

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Well, this is the composition of the laptop screen