PAVELSTOVICEKEL electrical components Germany PAVELSTOVICEKEL model PAVELSTOVICEKEL price

PAVELSTOVICEKEL electrical components are devices that convert optical signals into electrical signals. Their operating principle is based on the photoelectric effect. The photoelectric effect refers to the phenomenon where electrons in a material absorb photon energy when light strikes certain substances, resulting in corresponding electrical effects. Based on the different manifestations of the photoelectric effect, it is classified into three categories: external photoelectric effect, internal photoelectric effect, and photovoltaic effect. Photoelectric devices include phototubes, photomultiplier tubes, photoresistors, photodiodes, phototransistors, and photocells. The performance and characteristic curves of photoelectric devices are analyzed.

PAVELSTOVICEKEL electrical component structure

1. LCD panel: The LCD panel includes a polarizing film, glass substrates, black matrix, color filters, protective films, common electrodes, alignment layers, liquid crystal layer (liquid crystal, spacers, sealant), capacitors, display electrodes, prism layers, and diffuser layers. The polarizing film, also known as a polarizer, is divided into an upper polarizer and a lower polarizer. The polarization functions of the upper and lower polarizers are perpendicular to each other. They act like a fence, blocking light wave components as required; for example, they block light wave components perpendicular to the polarizer fence and only allow light wave components parallel to the fence to pass through. 2. Glass substrate: In liquid crystal displays, glass substrates are divided into an upper substrate and a lower substrate. Their main function is to hold the liquid crystal material in the space between the two substrates. The material for glass substrates is generally alkali-free borosilicate glass with excellent mechanical properties, heat resistance, and chemical corrosion resistance. For TFT-LCD, one glass substrate is distributed with TFT, while the other glass substrate is deposited with color filters. 3. Black matrix: The black matrix uses materials with high light-shielding performance to separate the three primary colors (red, green, and blue) in the color filters (to prevent color mixing) and to prevent light leakage, thereby helping to improve the contrast of each color block. Additionally, in TFT-LCD, the black matrix can conceal internal electrode wiring or thin-film transistors. Color filters, also known as color filter films, function to produce 3 primary colors of light (red, green, and blue), enabling full-color display on the liquid crystal display. 4. Alignment layer: The alignment layer, also known as an orientation film or directional layer, functions to enable uniform arrangement and orientation of liquid crystal molecules at the microscopic level. 5. Transparent electrodes: Transparent electrodes are divided into common electrodes and pixel electrodes. The input signal voltage is applied between the pixel electrode and the common electrode. Transparent electrodes are typically formed by depositing indium tin oxide (ITO) material on the glass substrate to create a transparent conductive layer. 6. Liquid crystal material: In LCD, the liquid crystal material acts like a light valve, controlling the brightness of transmitted light to achieve information display. 7. Driver IC: The driver IC is essentially a set of integrated circuit chip devices used to adjust and control the phase, peak value, frequency, and other parameters of the potential signals on the transparent electrodes, establishing a driving electric field to ultimately realize information display on the liquid crystal. In liquid crystal panels, active-matrix liquid crystal displays are constructed by sealing twisted nematic (TN) liquid crystal material between two glass substrates. The upper glass substrate, closer to the display screen, is deposited with red, green, and blue (RGB) tricolor filters (also known as color filter films), a black matrix, and a common transparent electrode. The lower glass substrate (the substrate farther from the display screen) is equipped with thin-film transistor (TFT) devices, transparent pixel electrodes, storage capacitors, gate lines, signal lines, etc. Alignment layers (or orientation layers) are prepared on the inner sides of the two glass substrates to orient the liquid crystal molecules. Liquid crystal material is injected between the two glass substrates, and spacers are distributed to ensure uniform gap thickness. The periphery is bonded with frame sealant for sealing purposes, and the common electrodes of the upper and lower glass substrates are connected using silver dot adhesive technology. Polarizers (or polarizing films) are attached to the outer sides of the upper and lower glass substrates, respectively. When a voltage is applied between the pixel transparent electrode and the common transparent electrode, the alignment state of the liquid crystal molecules changes. Consequently, the intensity of incident light passing through the liquid crystal also changes. Liquid crystal displays leverage the optical rotatory power of the liquid crystal material combined with electric field control to achieve information display. 8. Backlight module: LCD products are non-emissive electronic devices that do not possess inherent light-emitting characteristics. They must rely on light emission from the source in the backlight module to achieve display performance; therefore, the brightness of LCD is determined by its backlight module. Thus, the performance of the backlight module directly affects the display quality of the liquid crystal panel. The backlight module includes illumination sources, reflectors, light guide plates, diffuser sheets, brightness enhancement films (prism sheets), and frames. Backlight modules used in LCD can be mainly classified into two categories: edge-lit backlight modules and direct-lit backlight modules. Mobile phones, laptops, and monitors (15 inches) mainly use edge-lit backlight modules, while LCD televisions mostly use direct-lit backlight module light sources. Cold cathode fluorescent lamps and light-emitting diodes are the primary backlight sources for LCD. 9. Reflector: The reflector, also known as a reflection cover, mainly functions to direct all light emitted by the source into the light guide plate, minimizing unnecessary loss as much as possible. 1. Light guide plate: The main function of the light guide plate is to guide light from the side light source to the front of the panel. 11. Prism sheet: The prism sheet, also known as a brightness enhancement film, mainly functions to concentrate scattered light through refraction and total internal reflection within the film layer, emitting it from the backlight source at specific angles to achieve a screen brightening effect.13. Diffuser sheet: The main function of the diffuser sheet is to correct the edge-lit light from the backlight module into a uniform surface light source, achieving optical diffusion. Diffuser sheets are categorized into upper and lower diffuser sheets. The upper diffuser sheet is located between the prism sheet and the liquid crystal assembly, closer to the display panel. The lower diffuser sheet is located between the light guide plate and the prism sheet, closer to the backlight source.

PAVELSTOVICEKEL electrical component principle

LCD is a display that uses liquid crystal as the material. Liquid crystals are a class of organic compounds intermediate between solid and liquid states. At room temperature, they exhibit both the fluidity of liquids and the optical anisotropy of crystals. They become a transparent liquid when heated and a crystalline turbid solid when cooled. Under the influence of an electric field, the arrangement of liquid crystal molecules changes, affecting the intensity of incident light beams passing through the liquid crystal. This change in light intensity is further manifested as variations in brightness through the action of polarizers. Accordingly, controlling the electric field of the liquid crystal allows for changes in light brightness, thereby achieving information display. Thus, the role of liquid crystal material is similar to that of small "light valves." Since control circuits and drive circuits exist around the liquid crystal material, when electrodes in LCD generate an electric field, the liquid crystal molecules twist, causing regular refraction of the light passing through them (due to the optical rotatory power of the liquid crystal material). This light is then filtered by the second polarizer and displayed on the screen. It is worth noting that because liquid crystal material does not emit light itself, LCD typically requires an additional light source configured for the display panel. The main light source system is called the "backlight module," wherein the backlight plate consists of fluorescent materials that emit light, primarily providing a uniform backlight source.

PAVELSTOVICEKEL electrical component classification

Classification based on the working principle or structural characteristics of relays: (1) Electromagnetic relay: An electrical relay that operates using the attractive force generated between the electromagnet core and the armature by the current in the input circuit. (2) Solid-state relay: A relay where electronic components perform their functions without mechanical moving parts, providing isolation between input and output. (3) Temperature relay: A relay that activates when the ambient temperature reaches a specified value. (4) Reed relay: A relay that opens, closes, or switches circuits using the action of reeds sealed in a tube, which serve the dual function of contact springs and armature magnetic circuits. (5) Time relay: A relay whose output section delays or limits operation to a specified time before closing or opening the controlled circuit when an input signal is applied or removed. (6) High-frequency relay: A relay used for switching high-frequency and RF lines with minimal loss. (7) Polarized relay: A relay that operates due to the combined effect of a polarizing magnetic field and the magnetic field generated by the control current passing through the control coil. The direction of relay operation depends on the direction of the current flowing through the control coil. (8) Other types of relays: Such as optical relays, acoustic relays, thermal relays, instrument relays, Hall effect relays, differential relays, etc.

Weidou Intelligent Technology professionally sells German PAVELSTOVICEKEL connectors, PAVELSTOVICEKEL switches, PAVELSTOVICEKEL relays, PAVELSTOVICEKEL controllers, PAVELSTOVICEKEL plugs, PAVELSTOVICEKEL sensors, PAVELSTOVICEKEL resistors, PAVELSTOVICEKEL capacitors, PAVELSTOVICEKEL buses, PAVELSTOVICEKEL modules, PAVELSTOVICEKEL cables, PAVELSTOVICEKEL power supplies, PAVELSTOVICEKEL interfaces, PAVELSTOVICEKEL gateways, PAVELSTOVICEKEL circuit breakers, PAVELSTOVICEKEL original imports from Germany. Welcome customers to inquire and order.