4 1306002 . 九、發明說明： ^ 【發明所屬之技術領域】 本發明係有關一種氣體放電燈之調光控制方法，尤指一種對 氣體放電燈在不同調光值設定狀態進行轉換時之調光控制方法。 【先前技術】 常見應用於冷陰極螢光燈管（Cold Cathode Fluo;rescent Lamp， CCFL)的調光方法包含：工作週期控制（duty cycle c〇ntr〇1)、頻 率控制（frequency control)及脈波控制（v〇ltage c〇ntr〇1)等方 法。 ^在已核准的中華民國專利第504101號之中，揭露了一種「高 ^度，光燈=驅動裝置」，其主要係由一高頻振盪器、脈寬調變 =、第二、，二功率開關、及壓電變壓器所構成，其由高頻振盪 β產生尚頻父流訊號，再透過一脈寬調變器將之轉換為pWM諧振 頻率汛號，利用這個PWM错振頻率訊號的正半周期盥負半周期分 別地驅動兩個功率開關，再分別驅動壓電變壓器之^級線圈的兩 輪入端yx使壓電變壓器產生足以推動的脈波；藉此提供— 種具有高轉換效率及高脈波升壓比的CCFL驅動裝置。簡言之，該 =知的專利技婦、彻脈寬爾之方式，以高狀定鮮訊號驅 祕電賴H ’藉由定導通之不連料職絲控㈣率開關； 而每種方法It常X以高於峽能察覺的 :比的通斷來控姆光燈管的平均電流，而域辨係為固= 變的。 _種又到重視的方法則疋數位調光（digital dimming)或 、、2二二！1卜周，(，r”dimming)的控制方&，這種方法是讓燈管電 疋值操作’再利用低頻調光⑽)控制脈波來調變趣 週期（即G麵週期），亦即燈管的平均亮度和i 曰達到控制平均亮度的作用，但是習知之技術多 :啟叙：:*: ?硬啟動(hard—start)，如第1、2圖所示，-麵 、 約疋工作脈波的2〜4倍，而在關閉週期（0FF)的關 1306002 .閉脈波則為零電位（亦為零電产），μ ± , 一定電能方可達成其點亮”於氣體放電燈須具備 低設定狀態下（現有狀態多二二下Y匕衡法在調光值較 期電能不足而造錢體放電燈 ，體放紐所需工作週 此氣體放電燈照射光源^_/效果’因此’在利用 句或閃爍光產生，為此，可以看到顯示亮度不均 在30%]_周光範圍内制該氣體放電燈僅能 境而言（例日更低顯示亮度之特殊環 將完全不適用，當然了為克服此，=控制方法 ί度等缺失之==== 關閉⑽）燈鮮調光範’ ’必須反覆地啟動和 均須先產生^啟動ίί疋f在回復較高調光值設定狀態時 脈波及電流突波S體週期均會造成燈管的高啟動 值站㈣ο 體放廷燈的電極而言是相當不利，因此， 專、、'充=數位调光方法對燈管壽命有負面的影塑。 【發明内容】 本發明之主要目的，在於解決上述之缺失，避 供氣體放電燈之啟動週期後提 =Γ:值而==== 一調光值設定狀態下均維持在電力供應之啟動狀 i調先、周调光週期之工作脈波係對應不同調光值而提供相 所ϊ明足氣體放電燈得在已啟動狀態下可緩步回復 所而α周光冗度而可具備最大調光範圍。 【實施方式】 2之詳細說明及技術内容，現就配合圖式說明如下： 弟3、4圖所示』，係本發明氣體放電燈調光週期ρι 波形及调光值設定狀態示意圖，如圖所示：本發明係用於—種氣 1306002 之电期控制方法’透過啟動週期及調光週期PI Ί口方式達成控制目的，該控制方法包括有： 僅位亮氣體放電燈之啟動週期P4，該啟動週期w係 啟動產生於触_丨之前，且該 態下所需之電能動提供氣體放電燈在初次點亮狀 係在一調光週期P1，該調光週期P1 供對應工作脈ivj2m乳體放電燈狀態下所保留之調光值而提 光值設定妝能丁W本喪之該調光週期P1於氣體放電燈任一調 _之工作脈波L传針隹j寺在電力供應之啟動狀態’且該調光週期P1 維有一工作時序τι及-維持‘該 維持脈波V3 3幅=；^脈波V3而維持在非零電位狀態，該 脈波V3之I作頻脈波V2波幅，且該維持 電燈得在已啟動將可滿足氣體放 光範圍。 口设所而调先壳度而可具備最大調 P1，ί二調Ώ二期周5_光亮度之第-調光週期 三調光週期P3則表示調光值t為10%調光亮度，第 以明顯看出，當氣體放電燈之:周光亮度，從圖中可 調光週期Ph P2、P3 _ 值。又疋狀悲為1陶光亮度，各 作脈波V2,由於本值设定狀態而具備有不同長度工 波…及非零電位本龍中仍提供具有一工作脈 在微暗狀態而非關閉狀離，且 電能將使氣體放電燈維持 動（第5圖中更可於維；；時間隔式脈波方式推 長度或所請嘛），=序修蝴兄可依氣體放電燈 生，更對應第4圖所示，由於士义3有發光凴度不均勻之情事發 • ;本龟明即使位於較低調光值設定狀 7 1306002 4 * ’態’因氣體放電燈具備工作脈波V2及維持脈波V3而保持心姓 續導通狀態’ ϋ此，在調整為較高触值設定 將^; •加工作脈波V2相等長度，即可缓步回復氣體^ f，將可免除多次啟動脈波V1衍生之高啟動=二先党 ，成錢維護氣體放紐及前端反流器壽命。w及电流突 ‘明之j輯僅林發明的雛實齡,K，並翻純定 錢如範圍。即凡依本發明申請專利範圍之内 ^本發 、修飾，皆應為本發明之技術範疇。 ’、、、、：政變 1306002 【圖式fs〗早說.明】 第1圖，係習知氣體放電燈調光週期波形示意圖 第2圖，係第1圖之調光值設定狀態示意圖 第3圖，係本發明氣體放電燈調光週期波形示意圖 第4圖，係第3圖之調光值設定狀態示意圖 第5圖，係本發明氣體放電燈另一實施例調光週期波形示意圖 【主要元件符號說明】 PI、P2、P3..............調光週期 P4..................啟動週期 VI..................啟動脈波 Y2..................工作脈波 V3..................維持脈波 T1..................工作時序 T2..................維持時序4 1306002 . IX. Description of the invention: ^ Technical field of the invention The present invention relates to a dimming control method for a gas discharge lamp, and more particularly to a dimming of a gas discharge lamp when a different dimming value is set. Control Method. [Prior Art] The dimming method commonly used in Cold Cathode Fluo (Rescent Lamp, CCFL) includes: duty cycle control (frequency cycle control) and frequency control (frequency control) and pulse Wave control (v〇ltage c〇ntr〇1) and other methods. ^ In the approved Republic of China Patent No. 504101, a "high-degree, light=drive device" is disclosed, which is mainly composed of a high-frequency oscillator, pulse width modulation =, second, and second. The power switch and the piezoelectric transformer are configured to generate a frequency parental signal from the high frequency oscillation β, and then convert it into a pWM resonant frequency nickname through a pulse width modulator, and use the PWM to distort the frequency signal. The half cycle is driven by two power switches, and the two wheel terminals yx of the piezoelectric transformer are respectively driven to generate a pulse wave sufficient for driving; thereby providing high conversion efficiency And a high pulse-boost ratio CCFL drive. In short, the = patented technical woman, the way of the pulse wide, the high-definition signal to drive the secret electricity H' by the constant conduction of the wire control (four) rate switch; and each method It is often X that is higher than the canyon's perceived: the average current of the light tube is controlled by the on-off, and the domain discrimination is solid = variable. _ kinds of methods to pay attention to digital dimming or, 2 22! 1 week, (, r "dimming" control party &, this method is to let the lamp electric 疋 operation "reuse low frequency dimming (10)) to control the pulse wave to adjust the interesting period (ie G surface cycle), That is, the average brightness of the lamp and the effect of i 曰 to control the average brightness, but the conventional technology is more: the start:: *: ? hard start (hard-start), as shown in Figures 1, 2, - face, About 2 to 4 times the working pulse, and 1306002 in the off period (0FF). The closed pulse is zero potential (also zero power), μ ± , a certain amount of energy can be achieved. The gas discharge lamp must be in a low setting state (the existing state is more than two or two Y 匕 法 method in the dimming value of the period of energy is insufficient, and the money discharge lamp is used, the body discharge button is required for the working week, the gas discharge lamp illuminates the light source ^_ /The effect 'so' is generated by using a sentence or flashing light. For this reason, it can be seen that the display brightness unevenness is 30%]_the ambient light range is only applicable to the environment (the lower day display brightness) The special ring will not work at all, of course, to overcome this, = control method ί degree, etc. missing ==== close (10)) light fresh dimming 'It must be started repeatedly and must be generated first ^Start ίί疋f When replying to the higher dimming value setting state, the pulse wave and current spur S phase will cause the high starting value of the lamp (4) ο The electrode of the body lamp It is quite unfavorable, therefore, the special, 'charge=digital dimming method has a negative impact on the life of the lamp. SUMMARY OF THE INVENTION The main object of the present invention is to solve the above-mentioned shortcomings and avoid the start of a gas discharge lamp. After the cycle, the value is = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = The light-filled gas discharge lamp can be slowly recovered in the activated state, and the α-period lightness can be used to have the maximum dimming range. [Embodiment] 2 The detailed description and technical contents are as follows: 3, 4, which is a schematic diagram of the dimming period ρι waveform and dimming value setting state of the gas discharge lamp of the present invention, as shown in the figure: the present invention is used for the electric period control method of the seed gas 1306002 Cycle and dimming period PI The opening method achieves the control purpose, and the control method includes: a starting period P4 of only the bright gas discharge lamp, the starting period w is initiated before the contact, and the required electric energy is provided in the state to provide the gas discharge lamp In the first lighting period is a dimming period P1, the dimming period P1 is used to correspond to the dimming value retained by the working pulse ivj2m in the state of the emulsion discharge lamp, and the dimming value is set to adjust the makeup energy. The period P1 is in the gas discharge lamp, and the working pulse wave L is transmitted to the start state of the power supply 'and the dimming period P1 has a working sequence τι and - maintains the sustain pulse V3 3 = The pulse wave V3 is maintained in a non-zero potential state, and the I of the pulse wave V3 is a frequency pulse V2 amplitude, and the sustain lamp is activated to satisfy the gas emission range. The mouth setting can be adjusted to the first degree and can have the maximum adjustment P1, the second adjustment period of the second period of 5 _ light brightness - the dimming period three dimming period P3 means that the dimming value t is 10% dimming brightness, The first obvious is that when the gas discharge lamp: the brightness of the ambient light, the dimming period Ph P2, P3 _ value from the figure. The sorrowful sorrow is 1 luminaire brightness, each of which is pulsed V2. Due to the set value of this value, there are different lengths of work waves... and non-zero potentials are still provided with a working pulse in a dim state instead of being closed. Displacement, and the electric energy will keep the gas discharge lamp moving (in Figure 5, it can be more dimensional;; time-interval pulse wave mode push length or what is required), = sequence repair butterfly brother can be based on gas discharge lamp, more Corresponding to Figure 4, because Shiyi 3 has an uneven luminous intensity; • BenQing is located at a lower dimming value setting. 7 1306002 4 * 'State' due to gas discharge lamp with working pulse V2 And maintain the pulse wave V3 and keep the heart name continuous conduction state ϋ , , 在 在 在 在 调整 调整 调整 调整 调整 调整 调整 调整 调整 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; Start the pulse wave V1 derivative high start = two first party, into the money to maintain gas discharge and front-end reflux device life. w and current burst ‘Mingzhij series only Lin’s young age, K, and purely set money as range. That is, the present invention and the modifications within the scope of the patent application of the present invention should be the technical scope of the present invention. ',,,,: coup 1306002 [Graph fs〗 early to say. Ming] Figure 1, is a schematic diagram of the dimming cycle waveform of a conventional gas discharge lamp, Figure 2 is the dimming value setting state of Figure 1 FIG. 4 is a schematic diagram of a dimming period waveform of the gas discharge lamp of the present invention, and FIG. 5 is a schematic diagram of a dimming period waveform of another embodiment of the gas discharge lamp of the present invention. Explanation of symbols] PI, P2, P3.............. Dimming period P4..................Start cycle VI... ...............Start pulse wave Y2..................Work pulse wave V3......... .........maintain pulse wave T1..................Working sequence T2................ .. maintain timing