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What is LCD module?

What is LCD module? LCD module is LCM (LCDModule), namely LCD display module, which refers to the LCD display product integrating glass and LCD driver. It provides users with a standard LCD display driver interface (4 bit, 8 bit, VGA and other different types). Users can operate according to the interface requirements to control the correct LCD display.

Technical characteristics

LCM glass is a more integrated LCD product. In the case of small-size LCD display, it is convenient to connect the LCM to a variety of micro-controllers (for example, SCM); however, in the case of large-scale or color LCD displays, they usually occupy a large portion of the control system's resources or are not controllable at all. For example, 320 × 240 256 color LCM displays at 20 fields per second (that is, 20 full-screen refresh per second). The amount of data transferred in one second is as high as 320 × 240 × 8 × 20 = 11.71875Mb or 1.465MB. If a standard MCS51 MCU is used for processing, it is assumed that the MOVX command is repeated to send the data continuously. Taking into account the computation time of the address, it is necessary at least to finish the data transfer with the 421.875MHz clock. It can be seen that the amount of data to be processed is enormous.

Principle of LCD display module

The LCD technique is to pour the liquid crystal between the two planes. The grooves in these two planes are vertical (90 degrees). That is to say, if the molecules on one plane are aligned in the north and south, the molecules on the other are aligned to the east and west, and the molecules are forced into a 90 degree twist. Because the light travels in the direction of the molecule, it is also twisted at 90 degrees as it goes through the liquid crystal. But when a voltage is applied to a liquid crystal, the molecules will be re-arranged in an upright position, so that the light can be directed outward with no distortion.

The LCD depends on the polarizer and the light itself. Natural light is scattered randomly in all directions. The polarization filter is in fact a series of fine, fine, parallel lines. These lines form a web that blocks all the rays of light that are not parallel to them. The polarization filter is perpendicular to the first one, so it can completely block the polarization. Only when the lines of both filters are perfectly parallel, or the light itself is distorted to match the second polarization filter, will the light be able to penetrate.

What is LCD module? The above is about the technical features and principles of the LCD module. I hope it will be helpful to you.

The above is the whole content of What is LCD module?, If you want to order LCD liquid crystal display screen , contact us whenever you want, we can customize it for you professionally, Topfoison electronic service Email: info@topfoison.com .

Shenzhen Topfoison Electronic Technology Co., Ltd. is a national high-tech enterprise integrating R&D, design, production, sales and service, serving medical equipment, industrial equipment, intelligent electronic products, smart homes, AR VR projects, terminal brand customers in industries such as Internet of Things equipment. Our company has been focusing on the production customization of LCD liquid crystal displays for many years, providing integrated display solutions.

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