RU2084040C1 - Gas-discharge indication board - Google Patents

Abstract

FIELD: electronic devices. SUBSTANCE: device has upper dielectric plate 1, lower dielectric plate 2 covered with luminophore 3 on inner surface of indication cells which are shaped at intersection of anodes 4 according to cells of cathodes 5. In addition device has separating members on inner sides of plates between cathodes 5 and anodes 4. Said members are shaped as perpendicular systems of first and second barriers 6 and 7. In addition device has flanges which are located on equal distance from one another. Height of flanges on lower dielectric plate is equal to 1-3 factors of electrode depth. Flange length is less than length of indication cell by 10-30 %. EFFECT: improved discharge ignition, increased brightness due to increased size of through hole for passing discharge plasma from one cell to another, facilitated manufacturing during pumping. 2 dwg

Description

 The invention relates to electronic equipment and can be used as an indicator device for displaying information.

Known gas-discharge indicator panel containing the upper and lower dielectric plates with a phosphor on the inner surface of the display cells formed at the crosshairs of the anodes and cathodes, in which the size of the luminous elements is determined by the size of the space enclosed between the ribs and protrusions located on the upper and lower dielectric plates [1 ]
In this gas-discharge indicator panel, there is no uniform brightness of the glow of each cell, since the cathode is made of solid material with a limited glow area.

Known color gas discharge indicator panel [2] containing the upper and lower dielectric panels with a phosphor on the inner surface of the display cells formed at the crosshairs of the anodes and grouped by cathode cells, the separation elements on the inner surfaces of the dielectric plates between the cathodes and anodes, and the separation elements of the lower dielectric plate made in the form of mutually perpendicular unequal systems of the first and second barriers, the anodes are located between the first barriers, and the methods between the second barriers, the dividing elements of the upper dielectric plate are made in the form of mutually perpendicular barrier systems, one of which is made with a variable height, with protrusions, the shape and location of which corresponds to the recesses formed at the intersections of the second and first barriers of the lower plate, while the distance r K _-to between the cathodes in the cell is determined from the expression:
r _kk = 1,5 + 5,5 (x + x _{to ots),}
and the total height of the barriers r _{k-in the} upper plate is determined from the expression:
_{Cell #} l _{to ≥r-in} ≥ (x + x _{to ots),}
where x _{to the} length of the cathodic potential drop;
_UTS x length negative glow luminescence;
l _cells minimum display cell size.

 In this display panel, it is proposed to normalize the distance between the grouped cathodes and the inner surface of the upper glass in the cells to increase the brightness of the cells.

 However, the implementation of mutually perpendicular barrier systems of the upper dielectric plate with a variable height and the choice of the distance between the cathodes in the cell without determining the size of the protrusions do not provide normalization of the distance between the cathodes and the upper dielectric plate, which leads to a decrease in the process of ignition of the discharge in the cell and, as a result, to a decrease the brightness of her glow.

 The objective of the invention is to improve the process of ignition of the discharge to increase the brightness of the glow of the cells by increasing the size of the through hole for the flow of the discharge plasma from one cell to another and increase the manufacturability of the product during pumping.

 This problem is solved in the proposed gas-discharge indicator panel containing the upper and lower dielectric plates with a phosphor on the inner surface of the display cells formed at the crosshairs of the anodes and grouped by cathode cells, the dividing elements on the inner surfaces of the dielectric plates between the cathodes and anodes in the form of mutually perpendicular systems of the first and second barriers, the anodes being located between the first barriers, and the cathodes between the second barriers, characterized in that s lower dielectric plates have protrusions that are arranged at the same distance from each other, their length is chosen less than the length of the indicator cells by 10-30% and the height is equal to (1-3) of the electrode thickness, the cathodes are located in the protrusions of the first barrier.

 In the proposed gas-discharge indicator panel, the barriers of the upper dielectric plate are made of the same height, therefore, the upper dielectric plate lies on the barriers, which ensures normalization of the distance between it and the cathodes, and ultimately leads to an improvement in the process of ignition of the discharge.

 And the choice of the same distance between the protrusions of the barriers of the lower dielectric plate and the sizes of the protrusions in the proposed correspondence with the cell and electrode sizes allows us to choose the optimal sizes of the passage through the cells and does not affect the image contrast when the discharge flows into neighboring cells. At the same time, the rate of ignition of the discharge increases, which increases the brightness of the glow of the cells.

 Figures 1 and 2 show examples of the construction of the gas discharge indicator panel, which contains the upper 1 and lower 2 dielectric plates with phosphor 3 on its inner surface, display cells formed at the crosshairs of the anodes 4 and grouped by cathode cells 5. Separating elements of the lower dielectric the plates are made in the form of mutually perpendicular systems of the first 6 and second 7 barriers, the anodes 4 are located between the first barriers 6, and the cathodes 5 are between the second barriers 7. Moreover, the barriers 6 and 7 are high Upa 8, equidistant from each other. The dividing elements of the upper dielectric plate are made in the form of mutually perpendicular barrier systems 9 of the same height, on which the upper dielectric plate 1 lies. And the cathodes 5, depending on the size of the protrusions of the first barriers 6, can either be located between the protrusions if the height of the protrusions is commensurate with the thickness of the cathode (Fig. .1), or pass through the protrusions if the height of the protrusions is greater than the thickness of the cathode (figure 2).

 The panel works as follows.

 When voltage pulses are applied to the corresponding anodes 4 and cathode groups 5, a discharge is excited in the respective cells, the ultraviolet radiation of which irradiates the phosphor and causes the display cell to glow. At the same time, a cloud of ionized gas is formed in the cell, which flows through the openings formed in the barriers into neighboring cells, preparing conditions for quick ignition of the discharge in them and thereby reducing the ignition voltage.

 Moreover, the normalization of the height of the protrusions of the barriers of the upper dielectric plate leads to the fact that the upper transparent dielectric plate is at a strictly defined distance relative to the cathode (1-3) of the electrode thickness. An increase in height of more than (1-3) the thickness of the electrode would lead to an excessive increase in the penetration of the discharge into neighboring cells, the sedimentation of gas particles on the walls of the cells, and, as a consequence, to a deterioration in the image contrast.

 The choice of the length of the protrusions of the barriers of the lower dielectric plate by 10-30% less than the length of the indicator cell also determines the size of the holes through which the discharge flows into neighboring cells, and limiting this length to the selected limits does not allow violation of the conditions of the discharge burning by spontaneous illumination of neighboring cells.

During the experimental reproduction of a gas-discharge indicator panel made in accordance with the claims, it contained 10 ⁴ display cells with dimensions 2x2 mm ² with cathodes of 47ND wire with a diameter of 0.12 mm and was filled with a mixture of 70% Ne + 30% Xe, P 90 mm Hg the distance between the cathodes and anodes is chosen to be 0.4 mm, and the distance between the cathodes and the upper dielectric plate is 1.5 mm.

The ignition speed of the discharge increased by 10-15% and in accordance with this increased brightness of the panel. Moreover, an increase in the distance between the cathodes and the upper transparent dielectric plate increased the life of the dielectric plate by 10-15%
Moreover, since the size of the through-hole through which the gas was pumped out increased, the pumping process during the manufacture of the device was reduced by 5-10%, which made it possible to increase the manufacturability of the panel.

Claims (1)

 A gas discharge indicator panel containing upper and lower dielectric plates with a phosphor on the inner surface of the display cells formed at the crosshairs of the anodes and their cathodes orthogonal to them, separating cell elements on the inner surfaces of the dielectric plates between the cathodes and anodes in the form of mutually perpendicular systems of the first and second barriers forming communication holes between cells, the anodes being located between the first barriers, and the cathodes between the second barriers, characterized in that the barriers izhney dielectric plate have protrusions arranged at an equal distance, the openings of communication cells are formed by making the length of said protrusions is less than length of test cells 10 to 30% at the same height of the projections 1 March thickness of the electrodes, the cathodes are located in the protrusions of the first barrier.

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