RU136634U1 - AC DISCHARGE INDICATOR PANEL - Google Patents

Abstract

A gas discharge AC display panel comprising a first dielectric plate with pairs of parallel dielectric coated indication electrodes located on its inner surface, and a second dielectric plate, on the inner surface of which control electrodes coated with a phosphor and forming display elements with dielectric electrodes are placed orthogonally to the indication electrodes barriers located at least on one of the dielectric plates, the distance being waiting for the adjacent edges of the indication electrodes in pair (c), the size of the display element in the direction parallel to the indication electrodes (m) and the distance between the electrode coatings on the first and second dielectric plates (h) are connected by the ratios m / c≥0.4, h / m ≥ 0.25, characterized in that the ratios m / c, h / m are further limited to m / s ≤ 4.6, h / m 1 1.9.

Description

The utility model relates to gas discharge technology and can be used to develop means of displaying information on color gas discharge indicator panels (GUI) of alternating current planar design.

When designing colored ACIs of alternating current, one of the main problems is the problem of degradation of the luminance of the glow due to dusting of the phosphor layer by spray products from the region of a glow discharge plasma.

In a planar design, this problem is solved by spatial separation of control electrodes coated with a phosphor layer located on one dielectric plate and indication electrodes forming a glow discharge located on another dielectric plate. The distance between the phosphor layer and the indication electrodes is formed by barriers, providing an optimal distance, eliminating the phosphor dusting.

In this regard, the planar design of colored ACUs of alternating current is the most promising and has received wide industrial application.

Known ACI AC, containing two dielectric plates, on one of which are pairs of parallel indication electrodes coated with dielectric and stabilizing materials, and dielectric barriers, and on the other plate are control electrodes with a luminescent coating (Schinoda et al., "Improvemant of Luminance and Luinous Efficiency of Surface-Discharge color AC PDP, Sid, 91 Digest, p. 724).

The disadvantages of this GUI are low brightness due to a decrease in the luminous area of the luminescent coating within the indicator cells by the size of the control electrode area and, in addition, high levels of control voltages due to the need to remove the open control electrode over a sufficiently large distance, eliminating bombardment by plasma ions .

Known ACI AC, comprising a first dielectric plate with pairs of parallel dielectric coated indication electrodes located on its inner surface, a second dielectric plate, on the inner surface of which control electrodes coated with a phosphor and forming display elements forming dielectric electrodes, dielectric barriers are placed orthogonally to the indication electrodes located at least on one of the dielectric plates (RF Patent No. 2089964, CL H01J 17/49, publ. 09/10/1997).

The disadvantage of this design is the low reliability of control due to the high level of control voltages due to large losses of charged particles on the walls of dielectric barriers.

Closest to the proposed design of the ACI GUI is a structure comprising a first dielectric plate with pairs of parallel indication electrodes coated on a dielectric surface located on its inner surface, a second dielectric plate, on the inner surface of which control electrodes coated with a phosphor and forming with electrodes are placed orthogonally to the indication electrodes indications display elements, dielectric barriers located at least on one of the dielectric plates, and the distance between the adjacent edges of the display electrodes in pair (s), the size of the display element in the direction parallel to the display electrodes (m) and the distance between the electrode coatings on the first and second dielectric plates (h) are related by the relations:

m / s≥0.4;

h / m≥0.25

(RF patent №2129317, class Н01J 17/49, publ. 04/20/1999 - prototype).

The disadvantage of this design is that the above ratios do not allow the most complete optimization of the geometric dimensions of the display elements, which leads to a decrease in the durability and reliability of the GUI.

The objective of the utility model is to create a color GUI of alternating current with high reliability of control by choosing the optimal values of the ratios of the geometric dimensions of the display elements of the GUI of alternating current.

The specified technical result in the implementation of the utility model is achieved by the fact that in the GUI of an alternating current containing a first dielectric plate with pairs of parallel indication electrodes located on its inner surface and coated with a dielectric, a second dielectric plate, on the inner surface of which control electrodes are placed orthogonal to the indication electrodes phosphor and forming display elements with indication electrodes, dielectric barriers located at least on one of the dielectric plates, the distance between the adjacent edges of the indication electrodes in pairs (s), the size of the display element in the direction parallel to the indication electrodes (m) and the distance between the electrode coatings on the first and second dielectric plates (h) are related by m / s ≥0.4, h / m≥0.25, m / c, h / m ratios are further limited to

m / s≤4.6.

h / m≤1.9

When these ratios are fulfilled, optimal conditions for the formation of a wall charge in the display elements are ensured, which ensures high reliability of the control of a color GUI of alternating current.

The analysis of the prior art by the applicant, including a search by patent and scientific and technical sources of information and identification of sources containing information about analogues of the claimed utility model, allowed to establish that the applicant did not find an analogue characterized by features identical to those of the claimed utility model, and the definition from the list identified analogues of the prototype, as the closest in the totality of the features of the analogue, allowed to identify the set of essential in relation to the applicant m technical result in the distinguishing features of the claimed subject contained in the formula of the utility model. Therefore, the claimed utility model meets the requirement of "novelty."

The proposed design of the ISU is illustrated in the drawing. The design comprises a first dielectric plate 1, on which the indication electrodes 2 with a dielectric coating 3 are located, a second dielectric plate 4 with the control electrodes 5 and the phosphor coating 6 located on it, dielectric barriers 7 separating the display elements.

The GUI works as follows. A reference voltage is applied to all display electrodes that does not change the state of the indicator cells. For selective ignition of the indicator cells, it is necessary to apply a part of the recording voltage to the selected control electrodes, and another part to the selected indication electrodes. At the points of intersection of the selected control electrodes and indication electrodes, a discharge is excited, which is then picked up by subsequent pulses of the reference indication voltage. To change the information on the electrodes, it is necessary to apply blanking pulses and then repeat the “write” cycle again.

In the claimed ISU AC current relationship

m / s≤4.6.

h / m≤1.9,

where c is the distance between the adjacent edges of the display electrodes in pairs;

m is the size of the display element in a direction parallel to the indication electrodes;

h is the distance between the coatings of the electrodes on the first and second plates, makes it possible to optimize the parameters of the ISU. which ensures uniform accumulation of wall charge over the area of the electrodes and thus allows for reliable control of the ISU.

The ratio m / s> 4.6 leads to a decrease in the ignition voltage of the indicator gap U _lig.ind . However, this reduces the important parameter for the ISU of alternating current, as the memory range of the indicator period ΔU _{p ind} = U _zh.ind -U _g.ind ,

where U _g.ind is the voltage of the quenching of the discharge in the indicator gap.

This is due to the fact that the U _l.ind decreases significantly more with increasing m / s ratio than U _{g, ind} , whose values are determined by the conditions of the discharge burning.

With a large number of indicator gaps in the GUI due to the technological spread of electrical parameters across the field, the memory range U _{π. The gap} must exceed this spread, otherwise, when controlling the device, defective gaps will arise that either will not be recorded or will not be extinguished during control.

When m / s> 4.6, the memory range ΔU _{p ind} becomes less than the technological spread, which reduces the reliability of the control of the ISU.

The ratio h / m> 1.9 significantly increases the ignition voltage of the control gap U _closure , which increases the power consumption of the ISU.

An example of a specific implementation.

The color GUI of alternating current planar design contains two cladding glass plates. A system of indication electrodes with a distance between adjacent edges paired with = 0.08 mm is formed on the upper cover plate. Indication electrodes are coated with a dielectric coating of low-melting glass and a layer of stabilizing material - magnesium oxide. On the lower glass plate, a system of control electrodes is formed with a pitch of 0.35 mm, between which dielectric barriers are located that limit the display elements having a size in the direction of the indication electrodes m = 0.35 mm. Thus, m / s = 0.35 / 0.08 = 4.375 <4.6.

When assembling the device, the upper plate with indication electrodes is superimposed on the plate with control electrodes so that the electrodes are mutually perpendicular. The distance between the electrode coatings on the first and second glass plates is h = 0.6 mm. In this way. h / m = 0.6 / 0.35 = 1.7 <1.9.

After applying a sealing joint along the circuit of the device and its melting, the device is pumped out and filled with a mixture of inert gases (Ne + 5% Xe) at a pressure of 350 mm Hg. In the GUI manufactured in such a way, the memory range is ΔU, _pnp = 60-70 V, the ignition voltage of the indicator gap U _switchind = 170-180 V, the ignition voltage of the control gap U _closure = 80-90 V. The overall brightness of the GUI is 400 -500 cd / m ^2. With these parameters, the GUI is reliably controlled by low-voltage microcircuits, providing a high and stable brightness during operation.

Thus, the claimed technical solution allows you to create a GUI AC with high reliability management.

Claims (1)

A gas discharge AC display panel comprising a first dielectric plate with pairs of parallel dielectric coated indication electrodes located on its inner surface, and a second dielectric plate, on the inner surface of which control electrodes coated with a phosphor and forming display elements with dielectric electrodes are placed orthogonally to the indication electrodes barriers located at least on one of the dielectric plates, the distance being waiting for the adjacent edges of the indication electrodes in pair (c), the size of the display element in the direction parallel to the indication electrodes (m) and the distance between the electrode coatings on the first and second dielectric plates (h) are related by the ratios m / c≥0.4, h / m ≥ 0.25, characterized in that the ratios m / c, h / m are further limited to m / s≤4.6, h / m≤1.9.

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