M340476 八、新型說明： 【新型所屬之技術領域】 本創作大致係有關於液晶顯示裝置(liquid crystal display devices)之背 光模組’特別是可在顯示快速移動物件影像時減低影像模糊化之LCD顯 示裝置之背光模組。 - 【先前技術】 _ 包含了諸如電腦、電視螢幕的LCD裝置，在顯示快速移動物件影像 時，物件在顯示幕上的模糊化，一直是有待解決的問題。習知技術中已有 嚐忒利用增進LCD面板像素元件(pixel element)中的電晶體開關的反應時 間’而試圖解決此等問題。例如％目前典型LCD面板的像素開關電晶體的 反應時間已出現有5 ms甚至更快的相對高反應速度。 • 另亦有人嚐試在為面板提供光源的背光模組之中解決此問題。此包括 . I靜態及動態閃亮程序(blinking schemes)，其係試圖令背光模組提供與所顯 不影像相匹配的背光強度，以圖降低快速移動物件影像的模糊化問題。另 亦有一種作法是為頻譜序列LCD (spectrum sequential LCD)，其基本原理主 要係利用兩組不同型式的螢光管來交替地照亮面板。 - 、 但疋’習知技術之作法皆需要操取顯示影像的資訊内容，其需要執行 • 複雜的繹算(alg〇rithms)才能夠控制其閃亮及/或頻譜序列被光模組。此外， 由於此種提供適應性光源(adaptive lighting)的作法，·此類LCD顯示裝置的 影像品質(例如，亦特別是其色彩品質)便會偏離於原始品質之外，特別是 由於背光亮度及點亮時間之控制所造成之色彩上的變化，致使所顯現 像明顯失真。 【新型内容】 、、因此，本創作之一目的即在於提一種可在顯示快速移動物件影像時 減低影像模糊化之LCD顯示裝置之背光模組。 5 M340476 本創作之目的亦在於提供—種可在 燈管之她位落差組 答伴其μ丨-之t7b燈官，各組燈管包含至少一支 細—半之⑽ 【實施方式】 ® 3依據本創作具多重相位落差組燈管背光模組之液晶顯示裝 一較佳貫施例之電路方塊圖。圖中利用方塊圖以示意方式顯示背光 H 100之螢光燈管組及其驅動點亮之換流器(1肪屯 inverter) 100 之 驅動電路?續_。依據本創作，LCD裝置之背光模組刚擁有多組 的勞光燈管，不論是冷陰極螢光燈(c〇ld cathode fluorescent lamp，CCTL) 或熱陰極螢光燈(hot cathode fluorescent lamp，HCFL)型式之燈管。此些 燈管被分成多組，由驅動電路110依各組間相隔等相位落差的程序而 分別驅動點亮。 被驅動點亮而工作中的螢光燈管，其管電流實質上是為依正弦波 曲線的變動的電流。依其燈管電流之絕對值大小之變動，螢光燈管所 發出之燈光亮度亦隨之而變動，由暗至亮至暗而反覆變化。由於一般 其變動頻率極高，人眼因視覺暫留作用之故並無法辨別此高頻明暗之 變動。為方便起見，以下本創作之說明文字段落之中所指之燈管，點亮 M340476 時點，係以管電流為零時作為參考點。 依據本創作’圖1中之燈管⑷及151係 亮，燈管142及152由換流哭112嘯，㈣所鶴點 118所點古，笼笙饮ΙΓΤ 動燈官8及158則由換流器 = /康創作之較佳實施例作法，換流器111，出 _ 度範圍⑽相等相位差間距而依序驅動點亮。 ，如:右圖1中之Ν為6，則換流器⑴與112之間可以相隔3〇度的 相位產(180/6 = 30)。依此程序，則換流器118點 又回到換流器111。 ^ p 據^作，具有二重相位落差組燈管背光模組之 液曰日頦不裝置K鈿例，其燈管分組點亮驅動之時序圖。如前所述，此 t組燈管係依90度(180/2 =90)的相位差而分別點亮驅動，即如圖中所 不，兩燈管組之點亮時點212及222之間的9〇度相位差間隔。 圖3為圖2二重相位落差組燈管之個別點亮效果，其兩組以9〇 度相位分開的燈管，其縱軸之燈管發光亮度，即圖中以曲線則及32〇 表f者，各隨著横軸時間進展而明暗變動。由最低點的零亮度，到最 大亮度Imax，在兩極值之間變動。 味不過如同圖4所顯示的，依據本創作利用二組點亮相位錯開的燈 官，即1以完全排除背光模組出現全暗的情形，不論其時間如何短暫。 ffl 4顯不圖2二重相位落差組燈管之總合點亮效果。依據本創作的這 枚一種點燈程序，其總合亮度係為圖3中兩亮度曲線31〇及32〇的相 加結果’即圖4中的總合亮度曲線4〇〇。此總合亮度4〇〇，如圖所示， 係在Imax及Imm兩極值之間反覆變動。依據本創作，以最少燈管分 組組數的二組而言，其最低亮度亦大於最大亮度的百分之五十以上 (l/(sin45。+ cos45。) = 〇·7〇7)。 換^之’若背光模組中之所有光源燈管被區分為至少二組，各組 依序以貝負上相等之半週期間差(eqUal phase iagging出 one-half cycle) 而被點亮，則便可為LCD面板提供持續照亮的背光源。亦即，只要 LCD被啟動使用’其背光光源即沒有零亮度或過低亮度的照亮期間。 在依據本創作較佳實施例之背光模組孓中，所有的燈管在啟動操 M340476 ’全胃是處於全時100%操作的狀態，因此即沒有任何燈 怠轉的狀態。此可以將背光模組中的燈管資源使用到最 可將ΐ二同樣的亮度需求之下可將燈f數量降至最低，亦即 等= 使用發揮到最大程度。此代表成本最低，空間最小 •的光ίίΐΐΐ光模組之中’燈管被區分的組數越多，整個背光模組 質。^^平因此可以最佳地展現其所顯示影像的原始自然性 二使心知技術之主動適應性背光源之強度變動背光照射則 ^完^特質發生失真。此外.，依據本創作之背光模組之操 =^ ^棘雜紐。本辦f絲欧㈣料全獨立於 之外。此可以減低成本，降低故障之機率。 要執之點燈轉不f要娜顯示影_f朗容，更不需 鼻，只是單存地以最鮮的點燈電路來消除背光源 合入暗場」，因此不但電路結構簡單，成本低廉，更不 職祕壯品質之 以限配合圖式啸佳實施觸示綱如上，其並非用 之情、兄下i· 任何熟f此技#者，在不脫離本創作精神範圍 附Γΐ:直2進行各類更動與變化，因此摘狀保護翻當以後 付之申明專利乾圍所界定者為準。 【圖式簡單說明】M340476 VIII. New Description: [New Technology Field] This creation is mainly about the backlight module of liquid crystal display devices, especially the LCD display that can reduce image blur when displaying fast moving object images. The backlight module of the device. - [Prior Art] _ Contains LCD devices such as computers and TV screens. The blurring of objects on the display screen when displaying images of fast moving objects has always been a problem to be solved. Attempts have been made in the prior art to address such problems by increasing the reaction time of the transistor switches in the pixel elements of LCD panels. For example, the reaction time of a pixel switching transistor of a typical LCD panel has been relatively high in response time of 5 ms or even faster. • Another attempt has been made to solve this problem in backlight modules that provide a light source for the panel. This includes . I static and dynamic blinking schemes, which attempt to provide backlighting modules with backlight intensity that matches the displayed image to reduce blurring of fast moving object images. Another approach is to use a spectrum sequential LCD (LCD), the basic principle of which is to use two different types of fluorescent tubes to alternately illuminate the panel. - However, the practice of the prior art requires the manipulation of the information content of the displayed image, which requires the implementation of complex calculations (alg〇rithms) to control the illumination and/or spectral sequence of the optical module. In addition, due to the provision of adaptive lighting, the image quality of such LCD display devices (eg, especially their color quality) may deviate from the original quality, especially due to backlight brightness and The change in color caused by the control of the lighting time causes the apparent image to be significantly distorted. [New content] Therefore, one of the purposes of this creation is to provide a backlight module for an LCD display device that can reduce image blurring when displaying fast moving object images. 5 M340476 The purpose of this creation is also to provide a t7b lamp that can be used in the position of the lamp in the position of the lamp, and each group of lamps contains at least one thin-half (10) [Embodiment] ® 3 According to the circuit diagram of a preferred embodiment of the liquid crystal display device with a multi-phase drop group lamp backlight module. In the figure, a block diagram is used to schematically display the driving circuit of the fluorescent lamp group of the backlight H 100 and the inverter (100) which drives the lighting (continued). According to the creation, the backlight module of the LCD device has just a plurality of sets of burnt lamps, whether it is a cold cathode fluorescent lamp (CCTL) or a hot cathode fluorescent lamp (HCFL). ) type of lamp. These lamps are divided into a plurality of groups, and the drive circuit 110 is individually driven to illuminate according to a program in which the groups are separated by a phase difference. The fluorescent tube that is driven to illuminate and operates, the tube current is substantially a current that varies according to the sine wave curve. Depending on the absolute value of the lamp current, the brightness of the light emitted by the fluorescent tube changes accordingly, from dark to light to dark. Due to the extremely high frequency of variation, the human eye cannot distinguish the change in high frequency brightness due to the persistence of vision. For the sake of convenience, the lamp referred to in the following paragraph of the description of this creation illuminates the M340476 time point as the reference point when the tube current is zero. According to the creation, the lamp tubes (4) and 151 in Fig. 1 are bright, the tubes 142 and 152 are cried by the commutation, and the number of the crane points is 118, and the cages are simmered and the lights are officially 8 and 158. In the preferred embodiment of the flow converter, the inverter 111, the out-of-range (10) equal phase difference spacing, is sequentially driven to illuminate. For example, if the 右 in Figure 1 is 6, the inverter (1) and 112 can be separated by 3 degrees (180/6 = 30). According to this procedure, the inverter 118 points back to the inverter 111. ^ p According to ^, the liquid crystal 曰 颏 装置 具有 具有 具有 二 二 二 二 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有 具有As mentioned above, the lamps of the t group are respectively driven by the phase difference of 90 degrees (180/2 = 90), that is, as shown in the figure, between the positions 212 and 222 of the two lamp groups. 9 degree phase difference interval. 3 is an individual lighting effect of the lamp of the double-phase drop group of FIG. 2, the two groups of lamps separated by a phase of 9 degrees, the brightness of the lamp of the vertical axis, that is, the curve in the figure and the 32-inch table In f, each of the light and dark changes as the horizontal axis progresses. From the lowest point of zero brightness to the maximum brightness Imax, it varies between the two extreme values. However, as shown in Fig. 4, according to the present creation, two sets of lights that are staggered in phase are used, that is, 1 to completely eliminate the situation in which the backlight module appears completely dark, no matter how short the time. Ffl 4 shows the total lighting effect of the two-phase phase drop group lamp. According to the lighting procedure of the present invention, the total brightness is the sum of the two luminance curves 31 〇 and 32 图 in Fig. 3, that is, the total luminance curve 4 图 in Fig. 4. The total brightness is 4 〇〇, as shown in the figure, it varies between Imax and Imm. According to the present creation, the minimum brightness of the two groups with the minimum number of lamps is greater than 50% of the maximum brightness (l/(sin45.+ cos45.) = 〇·7〇7). If the light source tubes in the backlight module are divided into at least two groups, each group is illuminated by an eqUal phase iagging one-half cycle. The LCD panel can be provided with a continuously illuminated backlight. That is, as long as the LCD is activated, its backlight source has no illumination period of zero brightness or low brightness. In the backlight module according to the preferred embodiment of the present invention, all of the lamps are in the state of 100% operation at full time in the start-up operation M340476', so that there is no state in which the lamp is twisted. This can use the lamp resources in the backlight module to minimize the number of lamps f under the same brightness requirement, that is, to use to the maximum extent. This represents the lowest cost and the smallest space. • The number of groups in which the light tube is distinguished by the light ΐΐΐ ΐΐΐ 模组 , module is the same. ^^ Ping can therefore best show the original naturalness of the displayed image. Secondly, the intensity of the active adaptive backlight of the known technology changes the backlight illumination. In addition, according to the operation of the backlight module of the operation = ^ ^ thorns. This office f-European (four) material is completely independent of. This can reduce costs and reduce the chance of failure. It is necessary to carry out the light to turn to the light to show the shadow _f lang, not to nose, but to use the freshest lighting circuit to eliminate the backlight into the dark field, so not only the circuit structure is simple, the cost The low-cost, more incompetent and secret-rich quality is limited to match the pattern of Xiaojia's implementation of the above-mentioned indications. It is not used, and the brothers are not familiar with the spirit of this creation. Straight 2 carries out various types of changes and changes, so the definition of the patented circumference after the removal of the protection is subject to the definition. [Simple description of the map]
巧依據本創作具多重相位落差 較佳實施例之電路方塊圖。 組燈管背光模組之液晶顯示裳置一 差組燈管背光模組之液晶顯示裝置例 圖2為依據本創作具二重相位落 之燈組點亮驅動時序圖。 圖3為圖2 —重相位落差組燈管之個獅亮效果。According to the present invention, a circuit block diagram of a preferred embodiment has multiple phase drops. The liquid crystal display device of the backlight unit of the lamp unit is arranged as a liquid crystal display device of the backlight unit of the difference group lamp. FIG. 2 is a timing chart of the lighting operation of the lamp group with the double phase falling according to the present invention. Fig. 3 is a lion-bright effect of the lamp of the heavy phase drop group of Fig. 2.