The tools for assembling the LCD module display are mainly hammers and wrenches. The process of assembling is to first place all the things and materials on the workbench in an orderly manner. Secondly, place the boxes correctly according to the instructions. If there are assembling tools, they need to be placed in on the tool, pay attention to the correct orientation of the box; then, tear off the protective film of the LCD screen, wipe the electrodes clean with clean paper, after confirming the orientation, put it into the box correctly according to the instructions; take out the substrate and add the backlight, first fix the backlight on the PCB substrate.
Align the circuit board with the orientation of the structure, put it into the casing, press the zebra bar, and use a special assembly tool to fix the casing and the circuit board. The structure changes with the viewpoint of 45°. Be careful not to disconnect the board and the card, so that the structure and the PCB board are in parallel contact. Take the final assembled LCD module display product off the workbench, put on the protective film, and put it on the turntable. In order not to be injured, the screen is opposite to the screen, and the board is opposite to the board. After the product is assembled, please check the inspector, and reassemble the unqualified products.
The assembly intention of the LCD module display is to make the electrodes of the screen and the substrate correspond to 1 to 1, so that the electrical properties are the same. However, since the screen is not in direct contact with the wiring substrate, and the conductive tape is used as a medium, the screen and the substrate cannot be visually matched, and the corresponding electrodes cannot correspond to each other, resulting in azimuth errors. The connection of the electrodes corresponding to the screen and the substrate in the assembly is called alignment. The correspondence between the screen and the substrate in the assembly is mainly realized by the azimuth alignment of the screen and the substrate, and the azimuth alignment of the casing and the substrate. As an intermediate medium, the shell acts as the corresponding reference of the screen and the shell, and plays a great role in positioning. The alignment methods mainly include marginal alignment, pinhole alignment, and intermediate alignment.
LCD technology is to pour liquid crystal between two planes with thin grooves. The grooves on these two planes are perpendicular to each other (the intersection is 90 degrees), if the molecules on one plane are placed in a north-south direction, the molecules in the other plane are placed in an east-west direction, and the molecules located between the two planes are forced Enter a state of 90-degree change. Because the light travels along the orientation of the molecules, the light is also changed by 90 degrees when it passes through the liquid crystal. But when a voltage is applied to the LCD module, the molecules will be re-arranged vertically, so that the light can be directed out without any changes.
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