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A driving method of a plasma flat panel light source

A flat-panel light source and plasma technology, which can be applied to light sources, electric light sources, lighting devices, etc., can solve the problems of uneven lighting, environmental pollution, and low luminous efficiency, and achieve the effects of reducing power consumption and improving luminous efficiency.

Inactive Publication Date: 2016-06-22
NANJING JIANQIAO XINGANG TECH DEV CO LTD
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  • Abstract
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Problems solved by technology

[0002] The current mature product of the light source using the principle of plasma discharge is tubular fluorescent lamp, which is divided into cold cathode fluorescent lamp and hot cathode fluorescent lamp. uniform
For flat fluorescent lamps, inert gas is used as the working gas, which avoids the problem of environmental pollution and has good uniformity, but the luminous efficiency is not high, and needs to be improved from various technical links

Method used

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  • A driving method of a plasma flat panel light source
  • A driving method of a plasma flat panel light source
  • A driving method of a plasma flat panel light source

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, a preferred plasma flat-panel light source of the present invention includes a front substrate 1, a rear substrate 2, and a discharge chamber 3. The discharge chamber 3 is arranged between the front substrate 1 and the rear substrate 2, and the front substrate 1 is close to a side of the discharge chamber. A transparent medium layer and a protective film 5 are arranged on the side, and several parallel electrodes 4 driven by square wave pulses are arranged between the front substrate 1 and the transparent medium layer and the protective film 5; the side of the rear substrate 2 near the discharge chamber 3 is coated with three Mixed layer 6 of colored phosphor powder.

[0020] The distance between two adjacent parallel electrodes of this type of plasma flat panel light source is greater than or equal to 3 mm.

[0021] The discharge ch...

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Abstract

The invention discloses a plasma flat light source driving method. A driving signal applied to a plasma flat light source adopts a periodic signal formed by N square-wave pulses which are provided with rapid rising edges and rapid falling edges with frequency of 10-80KHZ and M low-level signals in a spacing way. The square-wave pulses are provided with the rapid rising edges and the falling edges. The plasma flat light source discharges only at the rising edges and the falling edges of the square-wave pulses and does not discharge at low levels. N is less than 5, M is less than 5 and N is greater than or equal to M. In order to improve light emission efficiency of the plasma flat light source, the invention brings forward the driving waveform adopting the mode that multiple high-level square-wave pulses and the low-level signals are arranged in the spacing way under the premise that the square-wave pulses are provided with steep rising edges so that the plasma flat light source can discharge intermittently and can emit light normally. Therefore, discharging maintenance time is reduced, electric heat loss can be greatly reduced, heat amount of a screen is reduced and light emission efficiency of the plasma flat light source is enhanced.

Description

technical field [0001] The invention relates to the technical field of plasma flat light sources, in particular to a driving method of a plasma flat light source that improves luminous efficiency. Background technique [0002] The current mature product of the light source using the principle of plasma discharge is tubular fluorescent lamp, which is divided into cold cathode fluorescent lamp and hot cathode fluorescent lamp. uniform. For flat fluorescent lamps, inert gas is used as the working gas, which avoids the problem of environmental pollution and has better uniformity, but the luminous efficiency is not high, and needs to be improved in various technical links. Contents of the invention [0003] In order to overcome the deficiencies in the prior art, the present invention provides a driving method for a plasma flat light source, which reduces the maintenance time of the discharge, greatly reduces the loss of electronic heat generation, reduces the heat generation o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K3/78H05B41/30
Inventor 曾倩倩匡文剑胡凯李青
Owner NANJING JIANQIAO XINGANG TECH DEV CO LTD
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