- What Are The Components Of The LCD Display？
- What Is Glass?
- What Is A Crystal?
- What Is An LCD Empty Cell?
- What Are PIN, FPC, Conductive Tape?
- What is a Polarizer?
- What Does COB, COG, COF Mean?
- What is the Backlight?
Are you looking for an LCD module? Do you want to know about the frame of the module? No need to worry or extra search here. We have a complete guide you should know about the frame of the LCD module.
LCDs, or liquid crystal displays, are among the most popular electrical components that allow us to interact with a gadget or piece of equipment. Liquid crystal displays are extensively utilized in various technical applications, from calculator displays and laptop computer screens.
1. What Are The Components Of The LCD Display？
A liquid-crystal display (LCD) is a horizontal-panel display or another electronically vibrated visual tool that uses the light-modulating abilities of liquid crystals in conjunction with polarizers. Liquid crystals do not transmit light straight but need a backlight or reflector to generate colour or pictures.
The LCD includes
- LCD empty cell
- Polarizer(Including Polarizer, compensation film)
- Pin or FPC or conductive tape or Zebra tape
- IC (COG, COB)
- Backlight(Except reflective mode )
Each pixel of an LCD is generally made up of a layer of molecules positioned between 2 translucent electrodes and typically composed of Indium-Tin oxide (ITO) and two polarizing filters (parallel and perpendicular polarizers). The transmission axes of which are (in most instances) vertical to each other.
2. What Is Glass?
LCDs are made in cleanrooms utilizing processes borrowed from semiconductor production and vast sheets of glass that have grown in size over time. Various displays are produced simultaneously and then sliced from a film of glass identified as the mother glass or LCD glass substrate.
The increase in size enables the production of more or more prominent displays, similar to how rising wafer sizes in semiconductor manufacturing allows for the production of more or larger displays.
3. What Is A Crystal?
Crystal is known as a crystalline solid. It is a solid substance whose components (such as atoms, molecules etc.) are organized in a fully managed microscopic design, resulting in a crystal lattice that extends in all directions. Furthermore, single macroscopic crystals are generally distinguished by their geometrical form consisting of flat sides with distinct orientations.
Light travelling through the first filter would be blocked by the second (crossed) polarizer if there was no liquid crystal between the polarising filters. The alignment of the electrode surfaces determines the orientation of the liquid crystal molecules before an electric field is introduced.
4. What Is An LCD Empty Cell?
LCD panels generally employ small-coated metal conductive passages on a glass substrate to construct the panel’s cell circuitry. LCD empty cells are utilized to provide input liquid crystals.
Mini LCD displays are often seen in LCD projectors and portable user products such as calculators, Wristwatches, and digital wall clocks, including smartphones. LCDs are also seen in consumer gadgets such as DVD players, video game consoles, and watches.
5. What Are PIN, FPC, Conductive Tape?
PIN, FPC, and conductive tape are all examples of conductive tape. These are the main sorts of connections.
These are directly attached to the display. It uses the most accessible pins during product development, small batch production, or prototyping. It provides outstanding protection from a challenging environment with shock and vibrations.
The developer created Flexible Printed Circuit (FPC) Connectors to satisfy the demands of this growing industry, which calls for tiny middle line or tone portions, fewer outline slopes, and lighter interconnect clarifications.
The Conductive Tape
An electrically conductive adhesive is a type of glue that is utilized mainly in the electronics industry. And it is commonly applied in small size LCDs. Because there is no space for PINs and FPC.
6. What is a Polarizer?
A polarizer is an optical filter. It allows light waves of one polarisation to pass in comparison and to block light waves of other polarizations. It may convert an indeterminate or mixed polarisation light beam into a polarised light beam by filtering it.
7. What Does COB, COG, COF Mean?
If one LCD is called COG, the IC will be on the LCD. If the IC is located on the mainboard, it is called COB. COF stands for (Chip on Flex). COF applies the most complex technology, so it is also the most expensive.
8. What is The Backlight?
A backlight is a type of lighting that is utilized in liquid crystal displays (LCDs). Unlike cathode ray tube (CRT) displays, LCDs do not emit light on their own and require illumination (either ambient light or a specific light source) to produce a viewable image.
As opposed to front lights, backlights illuminate the LCD from the side or rear of the display panel.
LED backlights for LCD screens are classified into two types: single colour LED backlights and RGB LED backlights.
The content of the LCD display can be fixed or customized. This can be decided according to the needs of the consumer. In general, the display content of dot-matrix screens can be changed according to the software design, while the display content of segment LCD displays is fixed.
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