Abstract: A second grid is supplied with a low potential acceleration voltage. A fourth grid and a sixth grid are supplied with a first focus voltage. A third grid and a seventh grid are supplied with a dynamic focus voltage (Vf2+Vd). A prefocus lens having a horizontal and vertical focusing function is formed between the second grid and the third grid. An asymmetrical lens section having a horizontal diverging function and a vertical focusing function is formed between the third grid and the fourth grid. The prefocus lens and the asymmetrical lens section are electrostatically coupled.

Abstract: To provide thermal evaporation preparations and a method of thermal evaporating chemicals whereby the chemicals can be efficiently evaporated. Thermal evaporation preparations, wherein the preparation is in the form of a solid at ordinary temperature but molten by heating into a liquid as a whole, and a chemical employed as the active ingredient is evaporated from the ingredients of the preparation thus liquefied by heating, and a method of thermal evaporating chemicals.

Abstract: A dynamic focus electrode has a vibration-damping portion formed by a beading process at a peripheral portion of an electron beam passage hole thereof, a plate face thereof, or an embedment portion thereof. Thereby, vibration of the dynamic focus electrode is suppressed.

Abstract: In a color cathode ray tube, the outer diameter of a neck is set at 22 mm-23 mm, the diameter of a pin circle formed by stem pins outside the flare section of a stem welded to an end of the neck is set at a nominal value of 15.24 mm, and the maximum diameter of a base adhered to an outer surface of the stem is set at 23 mm or less. Accordingly, while the neck outer diameter is reduced to reduce the power consumption of the color cathode ray tube, the color cathode ray tube has a high resolution.

Abstract: A second grid is supplied with a low potential acceleration voltage. A fourth grid and a sixth grid are supplied with a first focus voltage. A third grid and a seventh grid are supplied with a dynamic focus voltage (Vf2+Vd). A prefocus lens having a horizontal and vertical focusing function is formed between the second grid and the third grid. An asymmetrical lens section having a horizontal diverging function and a vertical focusing function is formed between the third grid and the fourth grid. The prefocus lens and the asymmetrical lens section are electrostatically coupled.

Abstract: A coating apparatus for forming a high-resistance film on the inner surface of the neck of the funnel of a cathode ray tube has a nozzle that can be inserted into the neck. The nozzle, which is provided for applying a material liquid to the inner surface of the neck, has a jet hole inclined toward the direction of gravity. The material liquid applied through the jet hole thus inclined scarcely flows upwardly on the inner surface of the neck. The liquid therefore forms a high-resistance film having a uniform thickness on the inner surface of the neck of the funnel. Having a uniform thickness, the high-resistance film inhibits the charge-up of the neck potential, reducing the convergence drift caused by the charge-up of the neck potential.

Abstract: A main lens of an electron gun assembly comprises a sixth grid, a seventh grid, an eighth grid, and a ninth grid. An asymmetric lens section is created between a fifth grid and the sixth grid on a cathode side of the main lens. The asymmetric lens section has such asymmetry that lens functions of the asymmetric lens section acting on the electron beams are different between the horizontal direction and the vertical direction, and has a lens power varying in synchronism with the deflection of the electron beams. In this asymmetric lens, the asymmetry for a center beam differs from that for side beams.

Abstract: In a color cathode ray tube, an electron gun assembly is received in a neck and includes three cathode electrodes, which are heated by heaters, respectively, and a plurality of electrodes. A sealing portion is welded to a stem section of the neck, and stem pins holding the electron gun are buried in the sealing portion. A wire is connected at one end to the stem pin and also connected at the other end to the electrode corresponding to the stem pin so as to electrically connect the electrode to the stem pin. The wire is provided with a folded portion. Even if the wire is thermally expanded, the thermal expansion is absorbed by the folded portion so as to suppress the fluctuation of the cathode current flowing into the electrode.

Abstract: A cathode ray tube according to the invention comprises an internal conductive film arranged on the inner wall surface of the envelope and extending from the funnel section to the neck section and a high resistance conductive film arranged in the neck section to contact the internal conductive film at an end of thereof and surround part of the electron gun assembly. The high resistance conductive film shows an electric resistance higher than that of the internal conductive film. Additionally, in a cathode ray tube according to the invention, the electric resistance of the high resistance conductive film in terms of per unit length along the axis of the tube is lower at and near the contact region held in contact with the corresponding end of the internal conductive film than at and near the opposite end of the high resistance conductive film.

Abstract: A high-resistance film having a plurality of pores and a resistance of 10.sup.10 to 10.sup.14 .OMEGA. is formed on the inner wall of the neck from a position where the high-resistance film contacts the inner conductive film to at least part of the inner wall surrounding at least the space between the grid farthest from a cathode to the grid second farthest from the cathode.

Abstract: Disclosed is a color cathode ray tube including an in-line electron gun, in which a high-resistance film whose resistance R at T.degree.C. has a resistance-temperature characteristic represented by d(Log R(T))/dT.gtoreq.-0.01 at least at a temperature ranging from 20.degree. C. to 40.degree. C. and is approximately 5.times.10.sup.13 .OMEGA. or less at about 25.degree. C. is formed on the inner wall of the neck.

Abstract: The electron gun assembly for cathode ray tube, has the structure in which the first, second and third grids are arranged in the traveling direction of an electron beam emitted from cathodes, and so is the fourth grid to which a anode voltage is applied, a suppressing ring is provided to be adjacent to the second and third grids, a dynamic focus voltage which is varied in synchronism with the deflection of the electron beam is applied to the first and third grids, and the first and second grids are connected to each other by means of the resistor provided adjacent thereto.

Abstract: In a color cathode ray tube apparatus having an electron gun assembly for emitting three electron beams disposed in one line, the electron gun assembly has at least first, second, and third electrodes G5, G7, and G9 applied with a voltage which changes in synchronization with deflection of electron beams. The first electrode and an electrode G4 adjacent thereto form first eccentric lenses for deflecting a pair of side beams in a direction in which the side beams extend to be close to the center beam. The second electrode and an electrode G6 adjacent thereto form second eccentric lenses for deflecting the side beams in a direction in which the side beams extend to be apart from the center beam. The third electrode and an electrode G8 adjacent thereto form third eccentric lenses for deflecting the side beams in a direction in which the side beams extend to be close to the center beam. An electron lens common to the three electron beams is formed between the second and third eccentric lenses.

Abstract: The present invention provides a cordless thermal vaporizer of the liquid type wherein the body of the vaporizer has a heater for heating a wick for drawing up a chemical solution from a bottle, and a socket disposed under the heater and removably fittable in the form of a cap to the bottle for attachment thereto. The body is reduced in weight and thereby made attachable to an electric outlet with stability. The solution bottle can be attached directly to the socket of the body and is therefore easy to replace.

Abstract: A cordless thermal vaporizer of the liquid type wherein the body of the vaporizer has a heater for heating a wick for drawing up a chemical solution from a bottle, and a socket disposed under the heater and removably fittable in the form of a cap to the bottle for attachment thereto. The body is reduced in weight and thereby made attachable to an electric outlet with stability. The solution bottle can be attached directly to the socket of the body and is therefor easy to replace.

Abstract: An electron gun for color-picture tube device comprises a final accelerating electrode and a focusing electrode divided into plural electrode units in the axial direction of the tube. A first focusing electrode unit adjacent to the final accelerating electrode is connected to a second focusing electrode unit adjacent to the first focusing electrode unit through a resistor. A focusing voltage being change in synchronous with the deflection of an electron beam is applied to the first focusing electrode unit. The resistor is used for removing the a.c. components from the focusing voltage. Then, the removed focusing voltage is applied to the second focusing electrode. For the electron beam deflected on the peripheral part of the screen, a quadrupole lens is formed. On the first focusing electrode unit side opposite to the second focusing electrode unit are formed first electron beam path holes whose major axes extend horizontally.

Abstract: In an electron gun assembly, three electron beams emitted from cathodes are passed through an electrode arrangement in which two intermediate electrodes are arranged between focusing are accelerating electrodes. A focusing voltage which is varied depending on an deflection of the electron beam is applied to the focusing electrode and an accelerating voltage is applied to the accelerating electrode. A resistor is connected between the accelerating electrode and the earth through a variable resistor and intermediate points of the resistor are connected to the intermediate electrodes. Thus, convergent and divergent lenses are formed between the focusing electrode and the intermediate electrode and between the accelerating electrode and the intermediate electrode. The lens powers of the convergent and divergent lenses are varied in accordance with the adjustment of the variable resistor.

Abstract: A color picture tube apparatus comprises an envelope including a funnel, a face plate and a neck, a phosphor screen on an inner surface of the face plate, an electron gun structure in the neck of the envelope for generating at least one electron beam, resistor means for supplying predetermined voltage to the electron gun structure, and deflection means for generating non-uniform deflection magnetic field to deflect the electron beam.

Abstract: A resistor assembly built into an electron tube, comprising a resistor element having at least one hole, an inner connector fitted in the hole, and an outer connector which formed integrally with the inner connector, or fixed thereto. The inner connector is electrically connected to the resistor element. The outer connector is secured and electrically connected to a part in the electron tube, whereby the resistor element is electrically connected to said part.

Abstract: The invention provides a method of vaporizing and a device capable of thermally vaporizing a thermally vaporizable composition being drawn up by a porous absorbing body due to its capillary attraction.