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Electromagnetic induction type plasma flat backlight source

A plasma and electromagnetic induction technology, applied in the field of plasma panel backlights, can solve the problems of environmental pollution, low coupling efficiency of panel backlights, poor startup performance, etc., and achieve a wide range of applicable voltages, uniform brightness, and discharge coupling efficiency. high effect

Inactive Publication Date: 2009-09-23
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the electromagnetic coil is placed under the rear substrate, there is still a certain gap between the electromagnetic coil and the discharge space, and this upper and lower positional relationship makes the coupling efficiency of this flat backlight source not high.
At the same time, the main discharge gas of this backlight is mercury, which will cause environmental pollution, and the starting performance at low temperature is poor

Method used

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  • Electromagnetic induction type plasma flat backlight source
  • Electromagnetic induction type plasma flat backlight source
  • Electromagnetic induction type plasma flat backlight source

Examples

Experimental program
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Effect test

Embodiment Construction

[0033] Such as figure 1 , figure 2 As shown, an electromagnetic induction plasma flat panel backlight includes a transparent front substrate 1 and a rear substrate 2 arranged in parallel, and is characterized in that a skeleton 3 is arranged between the front substrate 1 and the rear substrate 2, and is sealed to form a flat The discharge space 5 of the backlight is filled with xenon gas or neon-xenon mixed gas, the helical coil 4 is arranged on the skeleton 3 , and the inner surfaces of the front substrate 1 and the rear substrate 2 are coated with fluorescent powder 8 .

[0034] The skeleton 3 is composed of a side plate 301 and an annular iron core 302 sleeved on the outer periphery of the side plate 301. The side plate is sealed with the front substrate 1 and the rear substrate 2 to form a discharge space 5. The spiral coil 4 is sleeved on the annular iron core 302. , so that the entire annular core 302 is located in the helical coil 4, such as image 3 shown. The wind...

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PUM

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Abstract

The invention discloses an electromagnetic induction plasma flat panel backlight, which comprises a transparent front substrate and a rear substrate arranged in parallel, and is characterized in that: a skeleton is arranged between the front substrate and the rear substrate, and the discharge space of the flat panel backlight is sealed and formed , the discharge space is filled with xenon gas or neon-xenon mixed gas, a helical coil is arranged on the skeleton, and the inner surfaces of the front substrate and the rear substrate are coated with fluorescent powder. The invention has the advantages of long life, high light efficiency, no flicker, good color rendering, low light decay, high power factor, constant luminous flux, frequent switching, wide applicable voltage range, constant output power, quick start, low temperature start and the like.

Description

technical field [0001] The invention relates to a flat panel backlight source of a liquid crystal display, in particular to a plasma flat panel backlight source made by the principle of electromagnetic induction. Background technique [0002] Fluorescent lamp technology is a relatively mature technology, so among various liquid crystal display (LCD, Liquid Crystal Display) backlight devices, fluorescent lamp-type backlight sources are the most widely used and have the most types. Compared with other types of LCD backlights, fluorescent lamp-type backlights for LCDs have greater advantages in terms of brightness, light efficiency, uniformity of light emission, and working life. [0003] The current fluorescent lamp type backlight for LCD can be divided into the following categories according to its shape: [0004] (1) Tubular fluorescent lamp type backlight [0005] (2) Flat fluorescent lamp type backlight [0006] (3) Other forms [0007] For a long time, human beings ho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J63/04H01J63/06H01J1/50H01J1/62G02F1/13357
Inventor 杨兰兰李青张雄屠彦汤勇明郑姚生樊兆雯
Owner SOUTHEAST UNIV
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