Xinxiang City, 70-inch large-size touch-screen machines Scope

Shenzhen gifted-Technology 70-inch multimedia touch one machine, with 1080P Full HD LCD display (applicable to the family unit, business ......), the main video function: When a video, you can access the handle, the steering wheel rocker, dancing blanket, carried racing, shooting, Landlords, World of Warcraft, Fantasy Westward Journey, The Three Kingdoms and other electronic games. Free hotline: 13823646526 sales QQ: 837353964 Gu Yue color CRT TV to display a color picture tube development principles 4-1 and classified according to the color picture tube color reproduction control mode classification, the main shadow mask type, focusing grid style, style and beam guidance penetrating four categories, the dominant forty years of development process, is three-gun three-beam mask, trinitron and color picture tube of self-convergence. 1, three Trinitron color picture tube three shots in each of the three-beam tube electron gun with respect to the black and white picture tube electron gun, has its own transmission system, a pre-focusing system and the main lens system. Three Trinitron tube is an important condition to work properly, the three electron beams along the mask surface must always be able to converge at the same point on the surface of the mask when scanning, so as to make the three beams together through the holes and were playing the same mask On a three-color phosphor dot dots group. But it is difficult to achieve satisfactory results on the actual implementation, and the manufacturing cost is high. 2, a single-shot three-beam tube only with Sony, it appears that the color picture tube to an automatic dynamic convergence error correcting a major step forward. Trinitron tube three cathode, but the three electron beams emitted from the electron gun with the same focus. Inline three electron beams were on the same plane, so in any deflected state roughly three tracks are maintained at the same level, so just dynamic convergence error correction in the horizontal direction. Static convergence by converging plates vertically arranged to achieve. In short, single-shot three-beam tube greatly simplifies the convergence adjustment. In order to enhance the rate of the beam by using a vertical stripe grid mask, so that the transmittance increased to about 30%. Trinitron high image brightness tube deflection low power, simple structure and low cost. The drawback: bar gate poor rigidity, tremor easily affect image sharpness, cylindrical screen surface pressure difference, dynamic convergence is still not ideal. 3, since the self-convergence color picture tube CRT convergence dynamic convergence circuit can be completely eliminated, a special distribution of the deflection magnetic field alone can be achieved convergence itself, so that a very simple adjustment. Cancellation of the dynamic convergence line, saving about more than 100 dynamic convergence device, the machine costs significantly reduced. In the current self-convergent tube dominant. The role of each part consisting of 4-2 CRT CRT tube is a vacuum tube using electron beam screen to work with. Therefore CRT must contain three major components: an electron-emitting converge them into a fine beam of the electron gun, the deflection system scanning an electron beam on the phosphor screen, the electron beam energy intensity of the phosphor screen to emit light of different brightness. 4-3 Precision poly-line color picture tube will naturally converge pipe from the main components are: the integration of sophisticated in-line electron gun, vermicelli vertical stripe mask slotted screen, precision static ring deflection coils. 1, precision in-line electron gun arrangement from the convergence of three electron guns not like the Trinitron tube as arranged in a triangle, and unlike the single-shot three-beam tube that only one electron gun, but take an in-line integration of precision electron gun. "In-line" refers to the three electron guns in the same horizontal plane accurately arranged in a line, "integration" refers to the relative position between the three electron guns by modulating a set of three holes of the chip to form a very accurate positioning Overall (electron gun in the R, G, B three cathodes are independent). The control electrode (gate), accelerating electrode, the focusing electrode, the anode is a common high pressure. Theoretically, the accuracy of the distance between the electron gun, depends only on the production of precision mold electrode, regardless of the assembly process. The role of the electron gun in a cathode electrode: for emitting electrons. In the interior of the cathode cylinder has a filament, can be used after heating the cathode electron emission, the cathode heating. Gate: also known as the gate. It is the size of the potential difference between the cathode will determine the strength of the electron beam. Accelerating electrode: add a positive voltage of about 500V, pull out the electrons on the cathode, and electrons are accelerated toward the phosphor screen. The size of this voltage regulator will affect the brightness of the picture tube. Focusing electrode: The above plus a positive voltage of about 5KV, adjust the size of this voltage, can well focused. Focus bad image mold burnt. Ultor: the above plus there are about 25KV high voltage. This high pressure is simultaneously applied to the inner conductive layer to form a uniform equipotential space, the cathode emitted electrons bombard the phosphor screen on the speed. In addition to the electrodes, the top of the electron gun is also equipped with four ring, which ring is located on both sides of two beams of anode hole and concentric with the anode hole, from the magnetic shunt effect, the two side beams forming raster size reduction, called magnetic shunt; the other two ring located beneath the center beam, from the enhancement of the magnetic field, so that the center beam raster size increases, called magnetic enhancer. The overall effect of the magnet is coincident make four R, G, B three-color raster. They are an integral part of the converging means. 2, slotted plate and strip the mask from converging tube phosphors on the screen vertically alternately painted red, green and blue color phosphor lines, each R, G, B three phosphor lines as a group, as a pixels. In the absence of the gap at the phosphor-coated graphite, can absorb stray light, improving image contrast. 1cm at the screen, equipped with a shadow mask (also called the election swatches) are made of sheet steel. Thereon open about 400,000 strip holes arranged in orderly (mask hole), each hole corresponds to a group of phosphor lines on the screen, their role is to make the R, G, B electron beam bombardment only with their corresponding phosphor lines. 3, dynamic convergence correction tube of self-convergence type deflection coil mounted on the pipe diameter adjust color purity and high-precision components and special magnetic yoke static convergence. This deflection coil generates three electron beams converged moving magnetic field required for convergence, with magnetic poles at the inside, so that the three electron beams converge on the entire screen automatically. Color purity ring: two magnetic poles, the shape and works like a black and white picture tube raster center position on the flap. Red and blue ring convergence: four-pole magnetic ring to adjust its angle can coincide red and blue vertical line, synchronous rotation is coincident red and blue horizontal line. Purple (red and blue) and green convergence ring; six-pole magnetic ring, adjust its angle can coincide with purple and green vertical synchronous rotation is coincident with purple and green horizontal lines. Shenzhen gifted-Technology: excellent-Technology Enterprise concept: equality, pragmatism, passion, innovation and corporate vision: to become the best industries in China dedicated display terminal solutions provider Service Mission: customer focus, adhere to quality first , to provide customers with products and services, create a model of industry