Flat panel display FPD (flat panel display), as its name suggests, is a flat-screen television. It is a type of television compared to the huge body of a traditional kinescope television set. It mainly includes liquid crystal display (LCD) and plasma. Shows PDP (Plasma Display Panel), Organic Light Emitting Display (OLED), Surface-Conduction Electron-emitter Display (SED), and several Other types of television products.
LCD LCD TVs mainly use TFT-type liquid crystal display panels, and their main components include fluorescent tubes, light guide plates, polarizers, filter plates, glass substrates, alignment films, liquid crystal materials, thin mode transistors, and the like. First, the liquid crystal display must first use a backlight source, that is, a fluorescent lamp tube (CCFL) or an LED lamp to project a light source. These light sources will first pass through a polarizer and then pass through the liquid crystal. The arrangement of the liquid crystal molecules then changes the penetration. The light angle of the LCD. Then the light must then pass through the front of the color filter and another polarizer. Therefore, as long as the voltage value of the stimulating liquid crystal is changed, it is possible to control the intensity and color of the light that appears last, and then it is possible to change the color combinations with different shades on the liquid crystal panel.
The PDP Plasma Display Panel utilizes an inert gas electron discharge between two glass substrates to generate ultraviolet light to excite the coated red, green, and blue phosphor powders, and present various colored light spots. The emergence of the PDP has led to great changes in the development and application of mid-to-large-sized (about 40-70 inch) displays. With its ultra-thin volume and weight far smaller than traditional large-size CRT TVs, it is at high resolution, free from magnetic fields, and viewing angles. The characteristics of wide and active lighting are better than those of TFT-LCD, which fully meets the requirements of light, thin, short and small multimedia products.
The CRT (Cathode Ray Tube) can be said to be the "original ancestor" of projection technology. The projector using CRT technology is also called a three-gun projector. Its working principle is no different from that of a CRT monitor. Its light source and imaging are both CRTs. The CRT projector (as shown in Fig. 1) is impacted by an electron beam scan of the cathode ray to the imaging surface, so that the phosphor on the imaging surface emits light to form an image, which is then transmitted to the projection surface. A rear-projection TV using CRT technology works in much the same way as a projector, but it uses a rear projection instead of the projector's front projection.
Flat-panel TVs reflect the development trend of ultra-thin, ultra-light, high-definition televisions.
The key difference between the plasma and the liquid crystal defined by the flat panel is that the plasma is a gas image, and the liquid crystal is a liquid crystal image. The main difference is that the imaging principle causes the difference in contrast and sharpness. As for the difference between the screens, the same size of plasma or LCD, mainly to see the screen imaging effect, the quality of the same LCD screen there is a big gap.
The advantage of plasma is that the contrast is high-level, and the weak point is high power and relatively costly. The advantages of LCD TVs are low power, low radiation, and good color. The disadvantages are slow response time, serious image smearing, and poor hierarchical brightness.
LCD LCD TVs mainly use TFT-type liquid crystal display panels, and their main components include fluorescent tubes, light guide plates, polarizers, filter plates, glass substrates, alignment films, liquid crystal materials, thin mode transistors, and the like. First, the liquid crystal display must first use a backlight source, that is, a fluorescent lamp tube (CCFL) or an LED lamp to project a light source. These light sources will first pass through a polarizer and then pass through the liquid crystal. The arrangement of the liquid crystal molecules then changes the penetration. The light angle of the LCD. Then the light must then pass through the front of the color filter and another polarizer. Therefore, as long as the voltage value of the stimulating liquid crystal is changed, it is possible to control the intensity and color of the light that appears last, and then it is possible to change the color combinations with different shades on the liquid crystal panel.
The PDP Plasma Display Panel utilizes an inert gas electron discharge between two glass substrates to generate ultraviolet light to excite the coated red, green, and blue phosphor powders, and present various colored light spots. The emergence of the PDP has led to great changes in the development and application of mid-to-large-sized (about 40-70 inch) displays. With its ultra-thin volume and weight far smaller than traditional large-size CRT TVs, it is at high resolution, free from magnetic fields, and viewing angles. The characteristics of wide and active lighting are better than those of TFT-LCD, which fully meets the requirements of light, thin, short and small multimedia products.
The CRT (Cathode Ray Tube) can be said to be the "original ancestor" of projection technology. The projector using CRT technology is also called a three-gun projector. Its working principle is no different from that of a CRT monitor. Its light source and imaging are both CRTs. The CRT projector (as shown in Fig. 1) is impacted by an electron beam scan of the cathode ray to the imaging surface, so that the phosphor on the imaging surface emits light to form an image, which is then transmitted to the projection surface. A rear-projection TV using CRT technology works in much the same way as a projector, but it uses a rear projection instead of the projector's front projection.
Flat-panel TVs reflect the development trend of ultra-thin, ultra-light, high-definition televisions.
The key difference between the plasma and the liquid crystal defined by the flat panel is that the plasma is a gas image, and the liquid crystal is a liquid crystal image. The main difference is that the imaging principle causes the difference in contrast and sharpness. As for the difference between the screens, the same size of plasma or LCD, mainly to see the screen imaging effect, the quality of the same LCD screen there is a big gap.
The advantage of plasma is that the contrast is high-level, and the weak point is high power and relatively costly. The advantages of LCD TVs are low power, low radiation, and good color. The disadvantages are slow response time, serious image smearing, and poor hierarchical brightness.
JBK3 Machine Tool Control Transformer
Jingkesai Electric Co., Ltd. , http://www.hobaoelec.com