Replacement Laptop Parts

LCD screen, touchscreen assembly, bottom case, keyboard, charger, battery, LCD bezel, LCD cable, DC Jack, motherboard and other related parts.

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Laptop Parts Knowledge

Laptop parts include LCD screen, CPU, cooling system, keyboard, hard drive, memory, battery, graphics card, motherboard, speakers, DC jack, etc.

Motherboard: The motherboard is a platform for the work of various parts of the laptop, it connects the various parts of the laptop closely together, and each part transmits data through the motherboard.

CPU: The CPU is the computing core and control core of a laptop. Its function is mainly to interpret computer instructions and process data in software. The CPU consists of arithmetic units, controllers, registers, caches, and a bus that implements data, control, and status connections between them.

Laptop Screen: LCD screens are one of the key hardware in laptops, accounting for about a quarter of the cost. laptop screens mainly include LCD panels, LED panels, and OLED panels.

LCD and LED are two different display technologies. LCD is a display composed of liquid crystals, while LED is a display composed of light-emitting diodes. LED screens have more advantages than LCD screens in terms of brightness, power consumption, viewing angle, and refresh rate.

OLED display technology is different from the traditional LCD display, which uses a very thin coating of organic materials and glass substrate. When there is an electric current through, these organic materials will glow. An OLED screen can be made lighter and thinner, the viewing angle is larger, and can significantly save electricity. However, although OLEDs with better technology will replace LCDs such as TFTs in the future, the organic light-emitting display technology still has shortcomings such as short service life and difficulty in large-scale screens.

The display panel has two types: touch screen and non-touch screen. The touch screen allows the user to select different options by simply touching the desired menu or icon displayed on the screen with a finger.

Cooling System: The laptop cooling system is composed of four main parts: heatsink, heat pipe, fins, and fan. The working principle is that the heat generated by the CPU and GPU is transferred from the heatsink to the heat pipe and then from the heat pipe to the cooling fins and discharged by the fan.

Hard Drive: There are two types of laptop hard drives: mechanical hard drives and SSDs. Mechanical hard drives are typically 2.5 inches and 1.8 inches, while SSDs are typically smaller. SSDs have features that traditional mechanical hard drives do not have, such as fast read/write speeds, light weight, low power consumption, and small size. There are two types of storage media for SSDs, one uses flash chips as the storage media, and the other uses DRAM as the storage media. The latest is Intel’s XPoint technology.

The specification and definition of the port, function, and usage of the SSD are exactly the same as the ordinary hard drive, and the product shape and size are basically the same as the ordinary hard drive (the size and shape of the new U.2, M.2 and other SSDs are completely different from mechanical hard drives).

The SSD adopts SATA-2 port, SATA-3 port, SAS port, MSATA port, PCI-E port, M.2 port, CFast port, SFF-8639 port, and NVME/AHCI protocol.

Keyboard: The keyboard is the most common input device used to provide commands or data to the laptop. There are different types of keyboards depending on the keys and layout arrangement. The common types are QWERTY, QWERTZ, AZERTY, and HCESAR.

Memory: RAM is short for Random Access Memory. It is used to store data and programs in use. Laptops usually use DDR memory, which has the advantages of energy saving, fast transfer speed, and large capacity. Common DDR memory includes DDR3, DDR4, and DDR5.

Battery: The use of rechargeable batteries is one of the advantages of laptops relative to desktops. It can greatly facilitate the use of laptops in a variety of environments.

The role of the battery is to make the laptop can work in the absence of AC power. It mainly relies on the internal battery cells to maintain energy, and it can also be said that the quality of the battery cells determines the quality of the battery.

The internal structure of a laptop battery is mainly composed of three parts: battery cell, charge and discharge control circuit board, and temperature feedback cable. Among them, the battery cell is the energy center of the battery, which is responsible for countless charging and discharging operations. The circuit board is used to control the charging and discharging of the battery cell.

The laptop mainly uses 18650 cells, which are 65mm long and 18mm in diameter. Of course, some laptop batteries are restricted by shape and size and use other types of battery cells.

Graphics Card: The graphics card converts the display information needed by the laptop system and provides progressive or interlaced signals to the display to control the correct display. It is an important component that connects the display to the motherboard and is one of the most important devices in a laptop.

The graphics card undertakes the task of outputting and displaying graphics, and it is very important for those who are engaged in professional graphic design. Graphics card suppliers mainly include AMD and Nvidia.

DC Jack: The laptop DC jack is a must-have port. Its function is to supply power to the laptop and charge the battery. The common laptop DC jack is the circular port, square port, and USB Type-C port. Among them, the circular port is the most common. Because of the different specifications, the hole diameter of the circular port is also different.