WO2016106906A1 - Ensemble de tube fluorescent ultraviolet et appareil d'exposition aux ultraviolets d'alignement - Google Patents

Ensemble de tube fluorescent ultraviolet et appareil d'exposition aux ultraviolets d'alignement Download PDF

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Publication number
WO2016106906A1
WO2016106906A1 PCT/CN2015/071433 CN2015071433W WO2016106906A1 WO 2016106906 A1 WO2016106906 A1 WO 2016106906A1 CN 2015071433 W CN2015071433 W CN 2015071433W WO 2016106906 A1 WO2016106906 A1 WO 2016106906A1
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WIPO (PCT)
Prior art keywords
voltage
illuminance
electronic ballast
fluorescent lamp
power source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2015/071433
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English (en)
Chinese (zh)
Inventor
刘小成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Publication of WO2016106906A1 publication Critical patent/WO2016106906A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light

Definitions

  • the invention relates to the technical field of fluorescent lamps, and in particular to an ultraviolet fluorescent lamp assembly.
  • the present invention also relates to an alignment ultraviolet irradiation device used in a liquid crystal alignment process in the field of liquid crystal display manufacturing, which device comprises the aforementioned ultraviolet fluorescent lamp assembly.
  • Liquid crystal display has many advantages such as thin body, power saving, and no radiation, and has been widely used.
  • Most of the liquid crystal display devices on the market are backlight type liquid crystal display devices, which include a liquid crystal display panel and a backlight module.
  • the working principle of the liquid crystal display panel is to place liquid crystal molecules in two parallel glass substrates, and control the liquid crystal molecules to change direction by energizing or not the glass substrate, and refract the light of the backlight module to produce a picture.
  • the alignment control technology of liquid crystal molecules is one of the most important basic technologies for manufacturing liquid crystal displays.
  • the picture quality displayed by the liquid crystal display is related to the advantages and disadvantages of the liquid crystal alignment. Only when the liquid crystal material in the panel is stably and evenly arranged, a high quality picture can be presented.
  • a thin layer generally used to orient liquid crystal molecules is referred to as liquid crystal alignment layers.
  • the HVA (high-voltage-activated) light alignment technique refers to a monomer that promotes the polymer in the panel by UV light (Ultraviolet Rays) when a voltage is applied to the substrate 100. Reaction to achieve the purpose of liquid crystal alignment.
  • HVA optical alignment technology has been widely used in the high-generation TFT-LCD industry to ensure that the liquid crystal can form a specific alignment angle under UV light without generating Mura (meaning that the brightness of the display is uneven, causing various traces)
  • the uniformity of UV light illumination is the key, and the UV illuminance of HVA light alignment technology should be within 85 ⁇ 10% milliwatts/cm 2 .
  • the UV light required in the liquid crystal alignment process is usually provided by a aligning ultraviolet ray irradiation device, and a plurality of ultraviolet lamps (UV Lamps) are disposed in the alignment ultraviolet ray irradiation device.
  • the UV Lamp is a low-pressure fluorescent lamp that requires a ballast (also known as a ballast) for startup and regulation.
  • a ballast also known as a ballast
  • FIG. 1 a schematic diagram of a circuit connection of a conventional ultraviolet fluorescent lamp assembly, a ballast AC current received by a ballast, providing a working voltage and a working current to a fluorescent tube, the function of the ballast is: providing Enough voltage to start the lamp and stabilize the lamp operating current.
  • the industrial low-voltage fluorescent lamp UV lamp usually adopts an electronic ballast, and the advantage is that the electronic ballast is instantaneously lit at a high frequency (20 kHz to 60 kHz), and the light generated by the fluorescent lamp is very stable and almost flicker-free.
  • FIG. 2 is a structural block diagram of a prior art electronic ballast including a filter, a rectifier, a snubber capacitor, a high frequency oscillator, and a stabilizing device.
  • the ballast filters, rectifies, and highs the received commercial AC AC. After the frequency is oscillated, it is supplied to the fluorescent tube.
  • UV Lamp illumination The principle of UV Lamp illumination is that the mercury or inert gas in the lamp tube is heated and evaporated by the filaments at both ends of the lamp tube to form a thin mercury (inert gas) vapor.
  • the high pressure generated by the ballast is applied to both ends of the lamp tube to make the mercury atom (inert gas).
  • the UV Lamp lighting time increases, and after the number of switching increases, the mercury vapor and phosphor in the lamp will decrease, and the lamp illumination will be attenuated. Fig.
  • FIG. 3 shows illuminance maintenance rate curves L1 and L2 of two conventional UV lamps which are commonly used.
  • the two UV lamps have a lifetime of about 8000 hours, and the illuminance is the strongest when the lighting time is 0 hours immediately after installation, and the illuminance is the fastest in the first 100 hours, and the attenuation is about 5% to 10%.
  • the illumination is attenuated by about 10% to 15%, and when the lighting time reaches 8000 hours, the illumination is attenuated by about 30% to 40%.
  • the electronic ballast currently used cannot adjust the output voltage and frequency, so the illumination of the UV Lamp cannot be adjusted, resulting in a difference in illumination between the newly installed UV Lamp and the UV Lamp that has been used for a while. Large, if the number of hours after use reaches 8000 hours, the difference in illumination is as high as 30% to 40%.
  • the integrated light amount is higher than the UV Lamp with a certain number of hours of use, which results in poor production stability and affects product quality.
  • the present invention provides an ultraviolet fluorescent lamp assembly and an alignment ultraviolet irradiation device including the same.
  • the electronic ballast in the provided fluorescent lamp assembly can adjust the frequency of the output operating voltage, and adjust the output frequency to adjust the illumination of the fluorescent tube, thereby balancing the fluorescent tube illumination attenuation to maintain the illumination stability of the fluorescent tube during its life cycle.
  • An ultraviolet fluorescent lamp assembly comprising an electronic ballast and a fluorescent lamp tube, the electronic ballast
  • the filter includes a filter, a rectifier, a snubber capacitor, a high frequency oscillator, and a stabilizing device.
  • the electronic ballast supplies a working voltage to the fluorescent tube after filtering, rectifying, and high frequency oscillating the received mains alternating current.
  • the electronic ballast further includes a DC converter connected to the filter, the DC converter is connected to a DC power source, and the DC converter adjusts the electronic stability according to a voltage level of the received DC power source. The frequency of the operating voltage output by the device to adjust the illuminance of the fluorescent tube.
  • the illuminance of the fluorescent tube is linearly related to the voltage of the DC power source.
  • the voltage range of the DC power source is 2 to 10 V, and the illumination of the fluorescent tube is 20% to 100% of the original illumination.
  • Another aspect of the present invention provides an alignment ultraviolet irradiation apparatus comprising the ultraviolet fluorescent lamp assembly as described above.
  • the ultraviolet fluorescent lamp assembly and the alignment ultraviolet irradiation device provided by the embodiments of the present invention can adjust the frequency of the output working voltage by adjusting the output frequency to adjust the illumination of the fluorescent tube, thereby balancing the fluorescent lamp.
  • Tube illumination is attenuated to maintain illuminance stability of the fluorescent tube over its lifetime.
  • the device is applied to a liquid crystal alignment process in liquid crystal display manufacturing, and can improve the quality stability of the liquid crystal panel.
  • FIG. 1 is a schematic view showing the circuit connection of a conventional ultraviolet fluorescent lamp assembly.
  • FIG. 2 is a structural block diagram of a conventional electronic ballast.
  • Fig. 3 is a graph showing the illuminance maintenance rate curve of the UV Lamp in the conventional ultraviolet fluorescent lamp module.
  • FIG. 4 is a schematic diagram showing the circuit connection of the ultraviolet fluorescent lamp assembly provided by the embodiment of the present invention.
  • FIG. 5 is a structural block diagram of an electronic ballast according to an embodiment of the present invention.
  • Fig. 6 is a graph showing the illuminance maintenance rate curve of the UV Lamp in the ultraviolet fluorescent lamp unit of the embodiment of the present invention.
  • the ultraviolet fluorescent lamp assembly mainly includes an electronic ballast 10 and a fluorescent tube 20 .
  • the electronic ballast 10 includes a filter 101, a rectifier 102, a snubber capacitor 103, a high frequency oscillator 104, and a stabilizing device 105 that are sequentially connected.
  • the electronic ballast 10 supplies the operating voltage to the fluorescent tube 20 after filtering, rectifying, and high frequency oscillation of the received mains AC.
  • the electronic ballast 10 further includes a DC converter 106 connected to the filter 101, the DC converter 106 is connected to a DC power source DC, and the DC converter 106 is based on the DC power source DC received.
  • the magnitude of the voltage adjusts the frequency of the operating voltage output by the electronic ballast 10 to adjust the illuminance of the fluorescent tube 20.
  • the illuminance of the fluorescent tube 20 is linearly related to the voltage of the DC power source DC.
  • the voltage range of the DC power source DC is 2 to 10 V, and the illuminance of the fluorescent tube 20 is adjustable within a range of 20% to 100% of the original illuminance.
  • Fig. 6 is a graph showing a comparison of illuminance maintenance rate curves of two types of UV lamps using the ultraviolet fluorescent lamp assembly provided in the present embodiment. As shown in FIG.
  • L1 and L2 are illuminance maintenance rate curves of two conventional UV lamps which are commonly used as shown in FIG. 3
  • L3 and L4 are the two specifications after adopting the technical solution of the embodiment.
  • the illuminance maintenance rate curve of the UV Lamp When the UV Lamp is just installed, the voltage input to the DC power source DC of the DC converter 106 is set to 7 V, and the illuminance of the corresponding UV Lamp is 70% of the original illuminance (illuminance when no frequency modulation is performed). As the time of use of the UV Lamp increases, the voltage of the DC power supply DC is gradually increased, and the UV Lamp attenuation curve is inversely corrected to ensure that the UV Lamp has approximately the same illumination throughout its life cycle, maintaining the stability of its illumination.
  • This embodiment also provides an alignment ultraviolet irradiation device including the above ultraviolet fluorescent lamp assembly.
  • the alignment ultraviolet irradiation device may be an alignment ultraviolet baking furnace (UVO) or an alignment ultraviolet irradiation machine (UVM).
  • UVO alignment ultraviolet baking furnace
  • UVM alignment ultraviolet irradiation machine
  • the ultraviolet fluorescent lamp assembly and the alignment ultraviolet irradiation device provided by the embodiments of the present invention can adjust the frequency of the output working voltage by adjusting the output frequency to adjust the illumination of the fluorescent tube, thereby balancing the illumination of the fluorescent tube. Attenuation to maintain illuminance stability of the fluorescent tube over its lifetime.
  • the device is applied to a liquid crystal alignment process in liquid crystal display manufacturing, and can improve liquid crystal The quality stability of the panel.

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  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

L'invention concerne un ensemble de tube fluorescent ultraviolet, comprenant un ballast électronique et un tube fluorescent ; le ballast électronique comprend un filtre, un redresseur, un condensateur tampon, un oscillateur à haute fréquence et un appareil de stabilisation qui sont connectés en séquence ; le ballast électronique fournit une tension de travail au tube fluorescent après avoir appliqué un filtrage, un redressement et une oscillation à haute fréquence à l'alimentation électrique alternative reçue, et le ballast électronique comprend en outre un convertisseur de fréquence à courant continu connecté au filtre ; et le convertisseur de fréquence à courant continu est connecté à une alimentation électrique à courant continu, et le convertisseur de fréquence à courant continu ajuste la fréquence de la tension de travail fournie en sortie par le ballast électronique en fonction du niveau tension de l'alimentation en courant continu reçue de manière à ajuster l'éclairement fourni par le tube fluorescent. L'invention concerne en outre un appareil d'exposition aux ultraviolets d'alignement comprenant l'ensemble de tube fluorescent ultraviolet.
PCT/CN2015/071433 2014-12-31 2015-01-23 Ensemble de tube fluorescent ultraviolet et appareil d'exposition aux ultraviolets d'alignement Ceased WO2016106906A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410854609.5A CN104470169A (zh) 2014-12-31 2014-12-31 紫外线荧光灯组件以及配向紫外线照射装置
CN201410854609.5 2014-12-31

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WO2016106906A1 true WO2016106906A1 (fr) 2016-07-07

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WO (1) WO2016106906A1 (fr)

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CN110888267B (zh) * 2019-11-26 2020-12-08 Tcl华星光电技术有限公司 液晶配向装置及其操作方法

Citations (3)

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CN101640965A (zh) * 2008-07-30 2010-02-03 安德鲁·鲍拜尔 使小型荧光灯能全调光运行的装置和方法
CN101977478A (zh) * 2010-10-19 2011-02-16 傲玺微电子(上海)有限公司 一种采用两线式荧光灯数字调光控制方法和系统
CN201758481U (zh) * 2010-06-01 2011-03-09 陈敬昕 感应式荧光灯的镇流器装置

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US6150773A (en) * 1999-06-22 2000-11-21 International Rectifier Corporation Model and method for high-frequency electronic ballast design
CN101541138A (zh) * 2008-03-21 2009-09-23 饶衍中 灯具及其控制模块
CN101404460A (zh) * 2008-07-17 2009-04-08 东莞高仪电子科技有限公司 调幅式储能变频电路
CN201260265Y (zh) * 2008-09-19 2009-06-17 深圳市兴皓地电子有限公司 调光型荧光灯电子镇流器电路
CN201657477U (zh) * 2010-01-15 2010-11-24 谢寅 一种冷阴极荧光灯的调光驱动电路
CN102821531B (zh) * 2012-08-29 2015-03-11 孝感市捷能特种光源照明器具有限公司 一种“交—交调控”的数控hid驱动器
CN103110164B (zh) * 2013-01-23 2014-02-26 广东科奇超速冻科技有限公司 高压回旋磁系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101640965A (zh) * 2008-07-30 2010-02-03 安德鲁·鲍拜尔 使小型荧光灯能全调光运行的装置和方法
CN201758481U (zh) * 2010-06-01 2011-03-09 陈敬昕 感应式荧光灯的镇流器装置
CN101977478A (zh) * 2010-10-19 2011-02-16 傲玺微电子(上海)有限公司 一种采用两线式荧光灯数字调光控制方法和系统

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