-ltwf.doc/006 九、發明說明： 【發明所屬之技術領域】 別a 有關於—種低耗電源極驅動電路架構，且料 架構。 的祕電祕驅動電路 【先前技術】 圖1是液晶顯示器架構圖。請參照圖i，液 ιοΓ= 理ίΓ用薄膜電晶體⑽#開關，當閘極驅動器 謂輸出g資料至液晶，液晶則 對應的變化。 ％貝针產生相 2，、夜=疋=中之源極驅動器的方塊示意圖。請參照圖 液曰日颍不态的源極驅動器1〇2包含有：移位暫存器2〇〇、 問鎖器202、位準改變哭204、赵右μ _ 數 轉換器206及 輸出緩U8。移㈣存n 將接㈣的數位影 料依序寫人Α鎖器2〇2中，當Μ鎖器撕中儲存有一條水 平線的影像資料時，會將這些資料同時輸出至位準改變器 204,位準改變器綱改變數位影像資料的電壓準位再輸 出至數位至類比轉換器206，數位至類比轉換器2〇6接收 數位影像資料而輸出類比影像資料至輸出緩衝器2〇8，最 後由輸出緩衝器208將影像資料寫入至液晶，其中輸出緩 衝器208是由單增益負迴授運算放大器組成。 為了避免液晶產生離子效應，施加於液晶上的電壓信 1259433 ^2915-1 twf.doc/006 ::5=:斷地改變，因此部份驅動電路如數位至類比 轉換态及輸出緩衝哭又矸公焱τα 王喊比 3 ^ T ^ . 了刀為正極性及負極性兩種，如圖 Γκ ' 式，傳統的方法皆為提供相同 堡實際上不同極性的操作電壓範圍是不同Γ 、丰使不同極性的電路皆能正常地1作，因此傳續做 去的《操作範圍幾乎為單 =傳、洗做 點如下·· 的一化，此種做法的缺 第一、移位暫存器302、304 的電壓，輸升至相同 P¥C*V2，㈣f在轉換時，將增加功率的消耗， 增加二倍’功率消耗將增加四倍。 位二=== 容，及_，不同極性的數 率的消耗 的_電壓，—樣會增加動態功 壓：輸出緩衝器若使用相同的操作電 靜態二的， 極驅ί 率，!耗，本發明揭露-種低耗電源 電路的#你木 可細小不同極性位準改變器及類比 路成本的效果。 ^力^耗’進—步相降低電 【發明内容】 本發明的目的就是在提供一種適用於液晶顯示器上多 12594¾ 5-ltwf.doc/006 數個薄膜電晶體之源極的源極驅動器。 c目的再—目的是提供：：種 上之溥膜電晶體的低耗電源極驅動電路。冑曰曰顯不器 多數:體目共—種液晶顯示器，至少包括 夕要文=桃^日體、間極驅動電路以及源極驅 匕括 s明提出-種適用於—液晶顯示器上/ 曰曰體之源極的源極驅動器，此源極驅動器係、至=膜電 咖斗的移位暫存器、多二=以 接收來自移位暫存器的數位影像 料，並改變數位影像資料嶋的數位影像資 變器的類比電路，接收數 應的^影像資料，並輸出至_電晶體的_成為相對 準改變==電源電*位準及_位準至位 m貞比電路外，亚且提供至少 中電壓位準介於電源電屢 u位準， 該位準改變器及類比及接地電堡位準之間，其令 性。提供電源=二分別具有一正極性與-負極 器及正極性類:電路準:::屢位準至正極性的位準改變 準至倉;ΚΙ4ΑΛ、 及棱供中電壓位準及接地電壓位 負極性的位準改變器及負極性類比電路。 改變;===時，提供至— 變器及負極性類比電路的;二^供至負極性位準改 们MM料大於等於電源電麼 :wf.doc/006 位準的一半且小於電源電壓位準。 哭驅動器，其中阿鎖器其結構為二層問鎖 :料收輸入的數位影像資料，其中數位影像 一條水平線的影像資料並依序排列，當第 ^鎖$接收完-條水平線的影像資料時，則將一停水 2影像貧料輸出至第二層_器，而第—層_ 、'=下—條水平線的數位影像資料，而第二層閃鎖‘ —條水平線資料輸出至位準改變器。 貞时將 負極=讀錄類輯鋪依錄㈣區分為正極性及 正麻/f類比轉鋪，正触触至類轉換器提供 "影像資料轉換’負紐數位 、二: 性影像資料轉換。 員比轉換供負極 之輸出緩衝為’由單增益負迴授運算放大器細 衝器電壓範圍又可分為正極性輸出緩 體之驅 負極性類比雷故 此屯路係包括正極性類比電路、 器。找'以及第—位準改變器和第二位準改變 -中電ίη頰比電路，耦接電源電壓位準，以及第 極。負極性類比電輸出至薄膜電晶體的源 壓位準，接收-接，壓位準，以及第二中電 馬電壓及一數位影像資料，並將其轉換 12594¾ 5-ltwf.doc/006 成為相對應的-類比影m 電壓位準，用以接收—給入音料私 早以及第一中 厭n 山輸料文變數位影像資料的雷 壓位準，再輸出至正極性類比電路。以及=㈣ 器，編妾接地電壓位準，以及第二中電變 :f入資料，改變數位影像資料的電壓位準，再:出= 負極性類比電路。 丹翰出至该 上述之源極驅動器，其中當第_與第二中 同時’第-中電壓位準為電源電壓位準的一：：:準： 電壓位準為電源電壓位準的一半。 而苐—中 若第一與第二中電壓位準不相等 為大於接地電難準且小於等於電源電壓=位^ :;:rr準一電源電壓位準的- 上述之源極驅動器之正極性類 轉換器及輸出緩衝器组成。其中輸出緩衝^至類： 迴授運算放大器組成之正極性輸出緩衝H。°早增证負 轉換負極性類比電路，由數位至類比 轉換為及糾㈣她成。其巾細_ 迴授運算放Ail組成之貞極性輪出緩_。早^負 多數極‘_ ’適用於液晶顯示器上 夕數個溥膜電曰曰體之源極。源極驅動電路至 性類比電路、負極性類比電路、第一位準丨：一 ° 準改變器。正極性類比電_接於電源電壓::與: 12594¾ 5-ltwf.doc/0〇6 =_錢及數位影像資料，並將其轉換成為相對應的類比 4貝料’輸出至該些薄膜電晶體的源極。負極性類比電 路輕接接地電堡位準，接收伽瑪電麼及數位影像資料， j其轉換成為相對應的類比影像資料，輸出至該些薄膜 〜體的源極，其中正極性類比電路的接地端與負極性類 $源電壓端連接在—^。第—位準改變器，耗接 壓位準以及第—中㈣位準，用以接收輸入資料， L又i位影像倾的電壓位準，再輸出至該正極性類比電 路。第二位準改變器耦接接地電壓位準以及一第二中電壓 :準’用以接收一輸入資料，改變數位影像資料的電】位 ，再輸出至該負極性類比電路。 依照本發明的較佳實施例所述之一種液晶顯示器，上 f之液晶1貝示器至少包括：多數個皆具有閘極、源極、以 >及=的薄膜電晶體、祕於多數個薄膜電晶體之間極， 以雨出仏唬使薄膜電晶體導通的閘極驅動電路；以及 、、=動電路，適用於液晶顯示器中之多數個薄膜電晶體= 電路之驅動電路’此驅動電路係至少包括正極性類比 改變器性類比電路、以及第一位準改變器和第二位準 其中之正極性類比電路，耦接電源電壓位準， ==位準，接收伽瑪電壓及數位影像資料，並將^ ”應的類比影像資料’輸出至薄膜電晶體的 壓位電路’ _接地電壓位準’以及第二中電 i位準’接收伽瑪電壓及數位影像資料’並將其轉換成為 twf.doc/006 相對應的類比影像資料 =變器，電源電壓位準=體 用以接收輸入資料，改變 欠 電i位準， 出至正極性類比電路 ，=貝料的電壓位準，再輸 電壓位準，以及★亥第 ，弟一位準改變器，輕接接地 改變數位影像資料位準，用以接收輸潘 路。 MiL準’再輸出至該負極性類比電 上述之液晶顯示器，其盥 同時，第一中電壓位準為_^ $ :電壓位準相 電壓位準為電源電壓位準的1'半^ 、 ’而第二中 右其中第-與第二中電壓 :準:第大於中接;如 準為大於等於電源電壓位準的-半且 轉換正極性類比電路，由數位至類比 迴授運算放大器組成之正極性輸==盗疋由單增益負 上述之源極驅動器之負極性類比電路 器組成。其中輸出緩衝器是 又運异放大為組成之負極性輪出緩衝器。 _ ^用提供-種以上財錢位準至位準改變器及輪^ 低操作細震幅，將可大幅節省位上:二= 比轉換器動態功率的消耗，另外在輸出緩衝器方=㊁ 12594,¾ ltwf.doc/006 降低操作電壓的震幅，也可節省 耗。 ，輸出緩衝為的靜態功率消 為讓本發明之上述和其他目的、特徵和優 易懂，下文特舉較佳m/ 明顯 明如下。 佳貝化例亚配合所附圖式，作詳細說 【實施方式】 的電避免液晶產生離子效應，施加於液晶上 位至類比轉換器及輸出緩衝器又可分為正極性=生: 種，傳統的做法為無論何種極性，均提 電 位準改變器及輸出緩衝器，如接地電墨GNDn=: VDD’為了使不同極性的f路皆能正常地 ==乍範圍幾乎為為單-極性的二倍，= ^曰加^位準改變器及數位至類比轉換器動態功率 耗，也增加了輸出緩衝器靜態功率的消耗。 因此’為了解決習知的問題，本 地電壓GND及電源電壓VDD外，尚提供至二。二接 以減少操作電壓的變動振幅。 1’ 又前述之閃鎖器之結構可為二層閃鎖器，第一 接收輸入的影像資料，當第—層閘鎖器接收完—條丄 的影Ϊ資巧時，則將資料輸出至第二層問鎖器，而第-肩 閃鎖器繼續接收下—條水平賴影像㈣，第三 二 則將資料輸出至位準改變器。 心 12 I259m一。。6 的方：：ίΞ依f ί發明—較佳實施例的部分源極驅動器 * 所不，源極驅動器至少包括正極性 痛比電路406，耗接電源電壓位準vdd， ^準爾卜用以接收伽瑪電塵及數位影像』 ^換f為相對應的類比影像資料’輸出至薄膜電晶體的-ltwf.doc/006 IX. Description of the invention: [Technical field to which the invention pertains] A is related to a low-cost power supply driver circuit architecture and material architecture. The secret drive circuit of the prior art [Prior Art] FIG. 1 is a structural diagram of a liquid crystal display. Referring to Figure i, the liquid crystal transistor (10)# switch is used. When the gate driver outputs g data to the liquid crystal, the liquid crystal changes accordingly. The % beetle produces a block diagram of the source driver in phase 2, night = 疋 =. Please refer to the source driver 1〇2 of the liquid state, including: shift register 2〇〇, ask lock 202, level change cry 204, Zhao right μ _ number converter 206, and output slow U8. Move (4) save n The digital image of the connected (4) is sequentially written in the locker 2〇2. When the image data of a horizontal line is stored in the tearer, the data is simultaneously output to the level changer 204. The level changer changes the voltage level of the digital image data and outputs it to the digital to analog converter 206. The digital to analog converter 2〇6 receives the digital image data and outputs the analog image data to the output buffer 2〇8, and finally Image data is written to the liquid crystal by output buffer 208, which is comprised of a single gain negative feedback operational amplifier. In order to avoid the ion effect of the liquid crystal, the voltage signal applied to the liquid crystal is 1549343^2915-1 twf.doc/006::5=: the grounding is changed, so some driving circuits such as digital to analog conversion state and output buffer crying and 矸Gong 焱 α α 王 比 3 3 3 3 α 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了 了Circuits of different polarities can be used normally. Therefore, the operation range is almost the same as that of single transmission and washing. The first step of this method is to shift the register 302. The voltage of 304 is increased to the same P¥C*V2. (4) When the conversion is f, the power consumption will be increased by two times, and the power consumption will increase by four times. Bit 2 === Capacitance, and _, the voltage of the different polarity of the _ voltage, - will increase the dynamic power: if the output buffer uses the same operation, the static electricity, the drive rate, consumption, The invention discloses an effect of a low-consumption power supply circuit that can be used for small and different polarity level changers and analog road costs. The present invention aims to provide a source driver suitable for a source of a plurality of film electrodes of 125943⁄4 5-ltwf.doc/006 on a liquid crystal display. The purpose of the c-purpose is to provide:: Low-cost power supply driver circuit for the enamel transistor. Most of the 胄曰曰 胄曰曰 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 共The source driver of the source of the body, the source driver system, the shift register to the film electric hopper, the second two = to receive the digital image material from the shift register, and change the digital image data The analog circuit of the digital image converter, the number of received image data, and output to the _ transistor _ becomes the relative change == power supply * level and _ level to the m贞 ratio circuit, Yahe also provides at least the intermediate voltage level between the power supply and the level of the power, the level changer and the analogy and grounding electric bunker level, its order. Provide power = two respectively have a positive polarity and - negative and positive polarity class: circuit quasi-::: repeated level to positive polarity level change to the warehouse; ΚΙ4ΑΛ, and rib supply medium voltage level and ground voltage level A negative polarity level changer and a negative polarity analog circuit. Change; ===, provide to - converter and negative analog circuit; 2 ^ to the negative polarity level change MM material is greater than or equal to the power supply: wf.doc / 006 level half and less than the power supply voltage Level. The crying driver, wherein the A lock device has a structure of a two-layered lock: the digital image data input is received, wherein the image data of one horizontal image of the digital image is sequentially arranged, and when the first lock $ receives the image data of the horizontal line , a water-stop 2 image poor material is output to the second layer _, while the first layer _, '= lower - horizontal line of digital image data, and the second layer of flash lock '- horizontal line data output to the level Changer.贞 将 将 = = = 读 读 读 读 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = . The output ratio of the converter to the negative pole is buffered as 'single gain negative feedback to the operational amplifier. The voltage range of the amplifier can be divided into the positive output slow-drive analog. The negative analog analogy. This circuit includes the positive analog circuit. Look for 'and the first level changer and the second level change - the middle voltage ίη cheek ratio circuit, coupled to the power supply voltage level, and the first pole. The negative polarity analog output is output to the source voltage level of the thin film transistor, the receive-connect, the press level, and the second medium horse voltage and a digital image data, and converted into 125943⁄4 5-ltwf.doc/006 The corresponding - analog image m voltage level is used to receive - the sound pressure level of the incoming audio material and the image data of the first medium-negative image, and then output to the positive polarity analog circuit. And = (four), edit the ground voltage level, and the second medium voltage change: f into the data, change the voltage level of the digital image data, and then: out = negative analog analog circuit. Danhan goes out to the above-mentioned source driver, in which the first and second voltage levels of the first and second voltages are the ones of the power supply voltage level::: The voltage level is half of the power supply voltage level. And if the first and second intermediate voltage levels are not equal to the grounding power and less than or equal to the power supply voltage = bit ^ :;: rr is a power supply voltage level - the positive polarity of the above source driver Class converter and output buffer. The output buffer ^ to class: feedback the positive output buffer H of the operational amplifier. ° Early increase and negative conversion The negative polarity analog circuit is converted from digital to analogy and corrected (4). Its towel thin _ feedback operation put Ail composition of the polar wheel to slow down _. Early and negative Most of the ‘_ ’ applies to the source of several 溥 曰曰 曰曰 液晶 on the LCD. Source drive circuit to analog analog circuit, negative polarity analog circuit, first position: one ° quasi-changer. Positive polarity analogy _ connected to the power supply voltage:: and: 125943⁄4 5-ltwf.doc/0〇6 = _ money and digital image data, and convert it into a corresponding analogy of 4 shells 'output to the thin film The source of the crystal. The negative polarity analog circuit is lightly connected to the grounding electric bunker level, receiving the gamma electric and digital image data, j is converted into the corresponding analog image data, and outputted to the source of the film ~ body, wherein the positive polarity analog circuit The ground terminal is connected to the negative voltage class $ source voltage terminal at -^. The first-level changer, the consumption level and the first-fourth level are used to receive the input data, and the voltage level of the L and i-bit images is output to the positive analog circuit. The second level changer is coupled to the ground voltage level and a second medium voltage is used to receive an input data, change the electrical position of the digital image data, and output to the negative polarity analog circuit. According to a liquid crystal display according to a preferred embodiment of the present invention, the liquid crystal display device of the upper surface includes at least: a plurality of thin film transistors having gates, sources, > and =, and a majority a gate driving circuit between the thin film transistors, a gate driving circuit for turning on the thin film transistor by rain; and a = moving circuit, suitable for a plurality of thin film transistors in a liquid crystal display = a driving circuit of the circuit 'this driving circuit The system includes at least a positive polarity analogizer analog circuit, and a positive polarity analog circuit of the first level changer and the second level, coupled to a power supply voltage level, == level, receiving gamma voltage and digital image Data, and output the analog image data of the image to the pressure transistor of the thin film transistor _ ground voltage level and the second medium power level 'receive gamma voltage and digital image data' and convert it Become the twf.doc/006 corresponding analog image data = transformer, power voltage level = body to receive input data, change the under-power i level, out to the positive analog circuit, = the voltage level of the material, again The voltage level is measured, and ★ Haidi, the younger one of the quasi-changers, lightly grounded to change the digital image data level, used to receive the input channel. MiL quasi' output to the negative polarity analogy of the above liquid crystal display, At the same time, the first medium voltage level is _^$: the voltage level phase voltage level is 1' half of the power supply voltage level, and the second middle right is the first and second medium voltage: If the voltage is greater than or equal to the power supply voltage level - half and the conversion positive polarity analog circuit, the positive polarity transmission composed of the digital to analog feedback operational amplifier == thieves by the single gain negative source driver The negative polarity analog circuit breaker is composed of an output buffer which is a negative polarity wheel-out buffer composed of different amplifications. _ ^Uses to provide more than one type of money to the level changer and the wheel ^ low operation fine shock The amplitude will save a bit on the bit: two = the dynamic power consumption of the converter, and the output buffer side = two 12594, 3⁄4 ltwf.doc / 006 reduce the amplitude of the operating voltage, can also save power. Output buffer The static power is reduced to the above And other purposes, features and advantages, the following specific description is better m / clearly as follows. Jiabei example sub-match with the drawing, the detailed description of the [Electricity] to avoid liquid crystal ion effect, applied to the liquid crystal The upper-to-analog converter and the output buffer can be divided into positive polarity = raw: kind. The traditional method is to raise the potential changer and output buffer regardless of the polarity, such as grounding ink GNDn=: VDD' The f-channels of different polarities can be normal == 乍 range is almost twice the single-polarity, = ^ 曰 plus ^ level changer and digital to analog converter dynamic power consumption, also increases the output buffer static Power consumption. Therefore, in order to solve the conventional problem, the local voltage GND and the power supply voltage VDD are provided to the second. Second, to reduce the amplitude of the fluctuation of the operating voltage. 1' The flash locker described above can be a two-layer flash locker. The first received input image data is output to the first layer locker when the image is received. The second layer asks for the lock, and the first-shoulder flash lock continues to receive the lower-level horizontal image (four), and the third two outputs the data to the level changer. Heart 12 I259m one. . The method of 6:: Ξ Ξ f 发明 — — — — — — — — — — — — 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分 部分Receiving gamma dust and digital image 』 ^Change f to the corresponding analog image data' output to the thin film transistor
以及第缺至接地電壓位準GND ϋ 料VM2，帛以接修瑪電職數位影 :貝；:斗’亚將其轉換成為相對應的類比影像 溥膜電晶體的源極；第一位進叩 、 输出 位準VDD以Μ ^術’輕接電源電壓 準VDDU^-巾麵解觀，用 料，改變數位影像資料的雷厭A $工^ 叹狗入貝 電路T出至正極性類比And the first to the ground voltage level GND VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM VM叩, output level VDD Μ ^ surgery 'light connection power supply voltage quasi VDDU ^ - towel surface view, use materials, change the digital image data of the thunder A $ work ^ sing the dog into the shell circuit T out to positive polarity analogy
以及第二中電壓位準VM== 妾，壓位準GND 變數位Μ, 接收—輸人資料，並改 4〇8。Ρ冬貝^…壓位準，再輸出至負極性類比電路 έ- j著’正極性類比電路406與負極性類比電路408會 =出級分別輸出到奇數 定期間後，正極性Λ制，在經過一預 於屮合s μ · + 、匕電路4〇6與負極性類比電路4〇8的 ^8 ψ|亦即正極性類比電路4G6與負極性類比電路 線與奇1 編;虎=級:出到咖 顯示出影像資料。反復地進行，轉動面板來 述之正極性類比電路可以例如由—正極性數位至類 13 ltwf.doc/006 ltwf.doc/006And the second medium voltage level VM== 妾, the pressure level GND variable position Μ, receive-input data, and change 4〇8. Ρ冬贝^...pressure level, and then output to the negative polarity analog circuit έ-j with 'positive polarity analog circuit 406 and negative polarity analog circuit 408 will be output to the odd-numbered period, respectively, positive polarity, in After a pre-combined s μ · + , 匕 circuit 4 〇 6 and negative polarity analog circuit 4 〇 8 ^ 8 ψ | that is, positive polarity analog circuit 4G6 and negative polarity analog circuit line and odd 1 edit; tiger = level : Out of the coffee to display the image data. Repeatedly, the positive polarity analog circuit described in the rotating panel can be, for example, from - positive polarity to class 13 ltwf.doc/006 ltwf.doc/006
供負極性影像資料轉換。 如由負極性數位至類比轉換器及 其中負極性數位至類比轉換器提 負極性類比電路中的輸出緩衝器 則可以由例如單增益貞迴授運算放大驗狀貞極性輪出 緩衝器。 如上所述，正極性類比電路4〇6以及第一位準改變器 402的電壓源疋在電源電壓vdd與第一中電壓位準vmi 之間，所以其變動幅度為VDD-VM1，遠小於習知的 VDD-GND。此外，負極性類比電路4〇8以及第二位準改 變器404的電壓源是在電源電壓VDD與第二中電壓位準 VM2之間，所以其變動幅度為VM2-GND，也是遠小於 習知的VDD-GND。因此，正與負極性類比電路4〇6、4〇8 以及第一與第二位準改變器402、404的操作電壓變動振 幅均被大大地降低。 圖5繪示依照本發明另一較佳實施例的部分源極驅動 器的方塊不意圖。圖5的電路架構與圖4的電路架構的差 異點在於中電壓位準僅提供給第一與第二位準改變器 402、404，而正與負極性類比電路406、408則不提供中 電壓電位VM1、VM2。 如圖5所示，正極性類比電路406原本連接接地電壓 之處與正極性類比電路406原本連接電源電壓之處被連接 14 ltwf.doc/006 在-起’而不提供額外的接地與電源 比電路406、概。依據此種電路結構極性類 可以被回收而再次利用。例如，在顯示哭負 的電何 畫面下，電流從面板流到正極性類比電固 需要由負極性類比電路408提供電流 +日寸，方 以由正極性類比電路4〇6提供二達^^^流便可 妗車，中的π < j回收電何之目的盥 ^果$路可以不必再提供任何電荷，故可以達到省電效 依據本發明，中電壓位準的設定 =單-電壓源時，亦即第-中電壓二爾Γ:; -中電壓位準物2相同時，第一與 ; 彻卜爾2便可以設定成例如VDD/2，。此外若/ 列的電壓源時，亦即在此實施例為第-中電t 準彻等於第二中電壓位準彻日夺，第—中電壓位 第 ❺乾圍係設定在大於GND且小於等於vdd/2 . ^中電壓料的範關狀在大料於vDD/2且小於 性日士，。Γ、ί位至類比轉換器的電錢作範圍將因不同極 ^位準改變器輸出電壓振幅的降低而減小。 ㈣由功率消耗㈣C*v2’其中f為信號操作的 雷：二載電容，V為操作電壓振幅，因此降低操作 動i:::大幅節省位準改變器及數伽 P=I*=外在輸出緩衝器方面，運算放大器的靜態功率消耗 ，其中I為電流，V為操作電壓，因此降低操作電 15 twf.doc/006 12594,¾. 座的振幅，也可節省輸出緩衝器的靜態功率消耗。 雷上麟:縮小不同極性位準改變器及類比電路的操作 '不但減少了位準改變器的動態功率消耗，而 _減少了類比電路的動態及靜態功率消耗。也因為此部 伤電路的電壓振幅降低，又可選用㈣ ° 步達到降低電路成本的效果。 兀仵進— 雖然本發明已以較佳實施例揭露如上 限ί本發明：任何_此技藝者，料麟本發明 和耙圍内’當可作些許之更動與觸，因 範圍當視後社申請專鄕_界定者鱗。▲蔓 【圖式簡單說明] 圖1是液晶顯示器架構圖。 圖2是源極驅動器方塊圖。 圖3是習知的驅動電路圖。 的方賴本判-純倾_部分職驅動器 器的照本發明另一較佳實施例的部分源極驅動 【主要元件符號說明】 100 ·薄膜電晶體陣列，1〇2 :源極驅動器， 104 ··閑極驅動器，200 :移位暫存器，2〇2 ··閃鎖器 204 ·位準改變器，2〇6 :數位至類比轉換器， 16 12594¾ 5-ltwf.doc/006 208 :輸出緩衝器，302 :第一位準改變器， 3〇4 :第二位準改變器，306 :正極性類比電路， 308 ··負極性類比電路， 402 :第一位準改變器， 404 :第二位準改變器， 406 :正極性類比電路， 408 :負極性類比電路。 410 :輸出級 17For the conversion of negative image data. The output buffer in the negative polarity analog circuit can be amplified by a negative gain digital to analog converter and a negative polarity digital to analog converter, for example, by a single gain 贞 feedback operation. As described above, the voltage source of the positive polarity analog circuit 4〇6 and the first level changer 402 is between the power supply voltage vdd and the first medium voltage level vmi, so the variation range is VDD-VM1, which is much smaller than Know VDD-GND. In addition, the voltage source of the negative polarity analog circuit 4〇8 and the second level changer 404 is between the power supply voltage VDD and the second medium voltage level VM2, so the variation range is VM2-GND, which is also much smaller than the conventional one. VDD-GND. Therefore, the operating voltage fluctuation amplitudes of the positive and negative polarity analog circuits 4〇6, 4〇8 and the first and second level changers 402, 404 are greatly reduced. FIG. 5 is a block diagram of a portion of a source driver in accordance with another embodiment of the present invention. The circuit architecture of FIG. 5 differs from the circuit architecture of FIG. 4 in that the medium voltage level is provided only to the first and second level changers 402, 404, while the positive and negative polarity analog circuits 406, 408 do not provide the medium voltage. Potentials VM1, VM2. As shown in FIG. 5, the positive polarity analog circuit 406 is originally connected to the ground voltage and is connected to the positive polarity analog circuit 406 where the power supply voltage is originally connected. 14 ltwf.doc/006 does not provide an additional ground-to-power ratio. Circuit 406, general. According to this circuit structure polarity class can be recycled and reused. For example, under the display of the crying electricity, the current flowing from the panel to the positive polarity analog electric solid needs to be supplied by the negative polarity analog circuit 408 for current + day, to provide the second positive analog circuit 4〇6. ^ Stream can drive, the π < j recycling electricity what purpose 盥 ^ fruit $ road can not provide any charge, so can achieve power saving According to the invention, the setting of the voltage level = single-voltage At the time of source, that is, the first-to-medium voltage Erlang:; - when the medium voltage level 2 is the same, the first sum; Cheb 2 can be set to, for example, VDD/2. In addition, if the voltage source of the column/column, that is, in this embodiment, the first-to-medium voltage t is exactly equal to the second medium voltage level, the first-to-medium voltage level is set to be greater than GND and less than Equal to vdd/2. ^ The voltage of the material is in the form of vDD/2 and less than Sex. The range of the Γ, ί to analog converter will be reduced due to the decrease in the output voltage amplitude of the different levels. (4) Power consumption (4) C*v2' where f is the signal operation of the lightning: two-load capacitor, V is the operating voltage amplitude, so reduce the operation of the movement i::: greatly save the level changer and the number of gamma P = I * = external In terms of output buffer, the static power consumption of the op amp, where I is the current and V is the operating voltage, thus reducing the amplitude of the operating power of 15 twf.doc/006 12594, 3⁄4., can also save the static power consumption of the output buffer. . Lei Shanglin: Reducing the operation of different polarity level changers and analog circuits' not only reduces the dynamic power consumption of the level changer, but also reduces the dynamic and static power consumption of the analog circuit. Also, because the voltage amplitude of the circuit is reduced, the (4) step can be used to reduce the cost of the circuit.兀仵 — - Although the present invention has been disclosed in a preferred embodiment as the upper limit of the present invention: any of the skilled artisans, the material of the present invention and the inside of the circle can be made a little more change and touch, because the scope of the Apply for a special _ define the scales. ▲ 蔓 [Simple diagram of the diagram] Figure 1 is the architecture diagram of the liquid crystal display. Figure 2 is a block diagram of the source driver. 3 is a conventional drive circuit diagram. Partial Source Driver According to Another Preferred Embodiment of the Invention [Principal Component Symbol Description] 100 · Thin Film Transistor Array, 1〇2: Source Driver, 104 ··The idle driver, 200: Shift register, 2〇2··Flash lock 204 · Level changer, 2〇6: Digital to analog converter, 16 125943⁄4 5-ltwf.doc/006 208 : Output buffer, 302: first level changer, 3〇4: second level changer, 306: positive polarity analog circuit, 308 · negative polarity analog circuit, 402: first level changer, 404: Second level changer, 406: positive polarity analog circuit, 408: negative polarity analog circuit. 410: Output stage 17