TWI320162B - Driving circuit for liquid crystal display and liquid crystal display uses the driving circuit - Google Patents

Driving circuit for liquid crystal display and liquid crystal display uses the driving circuit Download PDF

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TWI320162B
TWI320162B TW94146297A TW94146297A TWI320162B TW I320162 B TWI320162 B TW I320162B TW 94146297 A TW94146297 A TW 94146297A TW 94146297 A TW94146297 A TW 94146297A TW I320162 B TWI320162 B TW I320162B
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liquid crystal
static
pixel
crystal display
thin film
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TW94146297A
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Chinese (zh)
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TW200725529A (en
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Eddy Giing Lii Chen
Sz Hsiao Chen
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1320162 --九、發明說明: -【發明所屬之技術領域】 本發月㈣於種液晶顯示面板购電路及採麗驅動電路之液 晶顯示面板。 【先前技術】 液晶顯示面板由於其具輕、薄、耗電少等優點,已廣泛應用於手 ^ ^A^^^^l(Personal Digital Assistant, PDA)#^^!^ 設備中。為減少液晶顯示面板之電力雜,料提出了—種液晶顯示 馨面板,該液晶顯示面板將顯示模式分為二種:一為動態顯示模式,一 •為靜態顯示模式,如手機的待機模式。在動態顯示模式中,該液晶顯 不面板工作原理與普通液晶顯示面板相似。在靜態顯示模式中,該液 晶顯示面祕彻靜魏機魏記憶離此RandGm α_ μ_ SRAM)對像素供電,㈣—步減少電力消耗。 明參閱第圖,其係該液晶顯示面板驅動電路1〇〇之電路示意 圖。該液晶顯示面板驅動電路100包括複數掃描線101、複數資料i 1〇2 及一公共(Common)電極 1〇7。 ❿ 胃掃摇線101沿第一方向相互平行排列。該資料線搬沿第二方 向相互平确列且與該掃描線皿絕雜直相交並界定複數像元 500。 清參閱第二® ’其係第―®所示液晶顯示面板驅動電路100單個 像素之電路放大示4圖。該像素單元包括—第一薄膜電晶體(Thin .Film Transistor, TFT)104 > i〇5 109 〇 1¾ 第薄膜電晶體l〇4鄰近該掃描線1〇1與該資料線i〇2之相交處設 置其閑極1040與該掃描線1〇1相連接,其源極1〇41與該資料線1〇2 相連接。5玄像素電極1〇5與該第一薄膜電晶體1〇4之汲極We相連接 1320162 並j A、電極1〇7形成—液晶電容108。該靜態顯示元件109包括 -二靜親機存取記憶體職、—第二_電晶體腦及—第三薄膜 電晶體1092。該靜態隨機存取記憶㈣94具有四個對外端子:觀、 r °其中’該端子與—高電壓%相連接,該端子 =、壶i ^ Vl相連接,該端子Vin與該第二薄膜電晶體1091之 ^相連接,該端子vout與該第三薄膜電晶體觀之源極相連接。 電晶體職之源極與該第三_電晶體ig92之汲極相連 =二=且成該靜_示元件之對外端子並與該第一薄膜電晶體 、/極1042相連接。該第二、第三薄膜電晶體腦、舰之問 H(Time Registef,TC〇哪未示)相連接,由 控制該第二、第三薄膜電晶體聰、臟之開啓或關閉。 姓該靜態隨機存取記憶體觀之功能為當該端子%輸入一高電壓 ^該=子Yin、Vout分別持續輸出該端子_、%之電壓;當該端 = 一低電壓時,該端子他、v〇m分別持續輸出 Vdd之電壓。 在動_示模式t ’該液晶顯示面板驅動電路⑽之工作原理盘 ^ =晶顯示面板驅動電路之功原理相同,即該靜態顯示元件⑽ 描線1〇1控制該第一薄膜電晶體104之開啓或關閉,該 二I =通過該第一薄膜電晶體_向該像的極105提供顯示電 屢以實現圖像顯示。 =靜_示模式t ’該像素單元之亮驗_示工作原理請 ㈣次:圖’第三圖⑻健掃描線1G1之掃描電麵序圖,第三圖⑼ =1=102之信號電壓時序圖,第三圖(c)係該第二薄膜電晶體 極電虔時序圖,第三圖⑼係該第三薄膜電晶體歷之問極 2時序圖’第三圖(E)係該像钱極⑽之電壓時序圖,第三圖 係該么共電極107之電壓時序圖’第三圖(G)係該像素電極105盘該公 7 1320162 •=電極107之電壓差之時序圖。u時刻,該掃描線ι〇ι提供一掃描電 屋將該第-薄膜電晶體1G4開啓,時序控彻將該第 咖開啓’該第三_電晶體觀則仍處於齡猶,啊,财 科線提供-高賴通猶第―、第二薄膜電晶體綱、聰驅動 存取記憶體_。t2時刻,該掃描線1Gl及該資料線ι〇2 :工至下-動,侧喊式壯。該靜祕機存取記憶體觀 通過該第二薄膜電晶體聰持續給該像素電極1〇5提供該端子· 之间電壓vH。此後,時序控制器控繼第二、第 職交替_和關閉,該靜態隨機存取記憶體綱交替提子 Vdd及該端子Vss之賴給該像素電極1〇5。即ί3 閉’該第三薄膜電晶趙⑽2開啓,該靜態隨2 __該像素電極105提供該 =Vss之低電壓Vl。t4時刻,該第二薄膜電晶體職開致, 二薄膜電晶體1092咖,該靜態隨機存取記憶體⑽4 過二 膜電晶體1091持續給該像素電極⑽提健端+觀之/ =二期循環。該蝴極1〇7之電壓亦做同樣之週期循 η時 刻為Vh ’ t3時刻變爲Vl ’至t4時刻又變回乂並—直循:= 而’該像素電極105與該公共電極107之龍差基本保 = 素單7C 500呈亮態顯示。 -々,該像 該像素單元500暗態顯示之工作原理與亮態顯示相似 之尾座為VH 4 ’該像素電極1G5之電壓為Vl,該 之電壓則為\時,該像素電極105之賴為Vh。該像^電^極107 =極㈣壓差之絕對值保持為VH',該像素單』^ 該液晶顯示面板驅動電路100在靜態顯示狀態中由該靜綠顯示元 81320162 -- Nine, invention description: - [Technical field to which the invention belongs] This month (four) is a liquid crystal display panel for a liquid crystal display panel and a liquid crystal display panel. [Prior Art] The liquid crystal display panel has been widely used in the manual ^ ^A^^^^l (Personal Digital Assistant, PDA) #^^!^ device because of its advantages of lightness, thinness, and low power consumption. In order to reduce the power miscellaneous of the liquid crystal display panel, a liquid crystal display panel is proposed, and the liquid crystal display panel divides the display mode into two types: one is a dynamic display mode, and the other is a static display mode, such as a standby mode of a mobile phone. In the dynamic display mode, the liquid crystal display panel works similarly to an ordinary liquid crystal display panel. In the static display mode, the liquid crystal display surface is silent, and the RandGm α_ μ_SRAM is used to supply power to the pixels, and (4) steps to reduce power consumption. Referring to the drawings, it is a circuit diagram of the liquid crystal display panel driving circuit 1〇〇. The liquid crystal display panel driving circuit 100 includes a plurality of scanning lines 101, a plurality of data i 1〇2, and a common electrode 1〇7.胃 The stomach sweep lines 101 are arranged parallel to each other in the first direction. The data lines are aligned with each other along the second direction and intersect the scan line neatly and define a plurality of pixels 500. For the sake of clarity, refer to the circuit diagram 4 of the second pixel of the liquid crystal display panel driving circuit 100 shown in the first embodiment. The pixel unit includes a first thin film transistor (TFT) 104 > i〇5 109 〇 13⁄4 the first thin film transistor l〇4 is adjacent to the scan line 1〇1 and the data line i〇2 The idle pole 1040 is connected to the scan line 1〇1, and the source 1〇41 is connected to the data line 1〇2. 5 The pixel electrode 1〇5 is connected to the drain We of the first thin film transistor 1〇4 1320162, and the electrode 1〇7 forms a liquid crystal capacitor 108. The static display element 109 includes a second static access memory device, a second transistor brain, and a third film transistor 1092. The static random access memory (four) 94 has four external terminals: a view, r ° where the terminal is connected to a high voltage %, the terminal =, the pot i ^ Vl is connected, the terminal Vin and the second thin film transistor 1091 is connected, and the terminal vout is connected to the source of the third thin film transistor. The source of the transistor is connected to the drain of the third transistor ig92 = two = and is the external terminal of the static component and is connected to the first thin film transistor and /pole 1042. The second and third thin film transistors, H (Time Registef, TC, not shown) are connected, and the second and third thin film transistors are controlled to be turned on or off. The function of the static random access memory view is to input a high voltage to the terminal % ^ the sub-pins Yin and Vout respectively output the voltage of the terminal _, %; when the terminal = a low voltage, the terminal V〇m continuously outputs the voltage of Vdd. The working principle of the liquid crystal display panel driving circuit (10) is the same as that of the crystal display panel driving circuit, that is, the static display element (10) traces the line 1〇1 to control the opening of the first thin film transistor 104. Or off, the second I = provide display power to the pole 105 of the image through the first thin film transistor to achieve image display. = static_show mode t 'the brightness of the pixel unit _ shows the working principle please (four) times: the picture 'the third picture (8) scan line 1G1 scan electric surface sequence diagram, the third picture (9) =1=102 signal voltage timing Figure 3, (c) is the timing diagram of the second thin film transistor pole, and the third diagram (9) is the third thin film transistor calendar 2 timing diagram 'the third figure (E) is the money The voltage timing diagram of the pole (10), the third diagram is the voltage timing diagram of the common electrode 107. The third diagram (G) is a timing diagram of the voltage difference of the pixel electrode 105 of the pixel 7 1320162 •= electrode 107. u moment, the scanning line ι〇ι provides a scanning electric house to open the first-thin film transistor 1G4, and the timing control is turned on. The third _ transistor view is still in the age, ah, finance Line supply - Gao Lai Tong Judi -, the second thin film transistor, Cong drive access memory _. At time t2, the scan line 1G1 and the data line ι〇2: work to the next-moving, side shouting strong. The static machine access memory is continuously supplied to the pixel electrode 1 to 5 by the second thin film transistor C5. Thereafter, the timing controller controls the second and the first alternate _ and the close, and the static random access memory is alternated with the Vdd and the terminal Vss is given to the pixel electrode 〇5. That is, ί3 is turned off, and the third thin film transistor (10) 2 is turned on, and the static is supplied with the low voltage V1 of the =Vss with the pixel electrode 105. At time t4, the second thin film transistor is opened, and the second thin film transistor 1092 is used. The static random access memory (10) 4 passes through the two-film transistor 1091 and continues to the pixel electrode (10). cycle. The voltage of the butterfly pole 1 〇 7 also performs the same period η time is Vh ' t3 time becomes Vl ' to t4 and then changes back to 乂 and - straight: = and 'the pixel electrode 105 and the common electrode 107 The basic difference of the dragon difference = plain 7C 500 is displayed in a bright state. - 々, the pixel unit 500 dark state display works like the bright state display tailstock is VH 4 'the pixel electrode 1G5 voltage is Vl, the voltage is \, the pixel electrode 105 depends For Vh. The absolute value of the voltage difference of the positive electrode 107 is kept at VH', and the pixel display panel 100 is in the static display state by the static green display element.

Claims (1)

1320162 . 十、申請專利範圍: 1. 一種液晶顯示面板驅動電路,其包括: • 複數掃描線; . 複數第一資料線,其與該掃描線絕緣相交; 複數第二資料線,其與該第一資料線平行且與該掃描線絕緣相交; 該第一、第二資料線與該掃描線界定複數像素單元,該像素單元包 括一第一子像素單元及一第二子像素單元,該第一子像素單元包 括: 複數第一薄膜電晶體,其鄰近該掃描線與該第一資料線之相交處 設置; 複數第一像素電極,其與該第一薄膜電晶體相連接; 複數第一靜態顯示元件,其包括一對外端子,該端子與該第一薄 膜電晶體相連接,該第一靜態顯示元件在靜態顯示模式中為該第 一像素電極提供顯示電壓; 該第二子像素單元包括: 複數第二薄膜電晶體,其鄰近該掃描線與該第二資料線之相交處 設置; 複數第二像素電極,其與該第二薄膜電晶體相連接; 複數第二靜態顯示元件,其包括一對外端子,該端子與該第二薄 膜電晶體相連接,該第二靜態顯示元件在靜態顯示模式中為該第 二像素電極提供顯示電壓。 2. 如申請專利範圍第1項所述之液晶顯示面板驅動電路,其中,該第 一像素電極之面積與該第二像素電極之面積相等。 3. 如申請專利範圍第1項所述之液晶顯示面板驅動電路,其中,該第 一像素電極之面積與該第二像素電極之面積相異。 4. 如申請專利範圍第1項所述之液晶顯示面板驅動電路,其中,該第 16 x^〇l62 四 之 丨.如電極之面積與該第二像素電極之面積之比值為2:卜 熊显二專利範圍第1項所述之液晶顯示面板驅動電路,其中,該靜 ,凡件包括—靜態隨機存取記鐘、-第三賴電晶體及-第 :膜電晶體’該第三薄膜電晶體之汲極與該靜態隨機存取記憶體 接,對外端子相連接,其源極與該靜態顯示元件之對外端子相連 4第四_電晶體之源極與該靜態隨機存取記㈣之另一對外 ‘由相雜,魏極無靜態顯示元件讀外端子相連接。 •一舟%專她圍第1項所叙液晶齡面板軸電路,其中,其進 •-=括與④第—馳電晶體相連接之複數第—存儲電容,與該第 -賴電晶體相雜之複數帛二存麟容。 7. —種液晶顯示面板,其包括: 一第一基板,其包括: 複數掃描線; 複數第—資料線,其與該掃描線絕緣相交; 交 該弟一 ^數第二資料線,其與該第—資料線平行且與該掃描線絕緣相 該像素單元 該第一子像素單元 =第二資料線與該掃描線界定複數像素單元, ^ 第一子像素單元及一第二子像素單元, 包括: 資料線之相交 複數第-_電晶體’其鄰近鱗描 一 處設置; * 複數第一像素電極,其 複數第-㈣⑯ 體相連接; 弟静_示元件,其包括一對外端子 薄膜電晶體相連接,該第一靜態顯 ^子與料一 該第—像素電極提供顯示電壓;件在^顯示模式中為 該第二子像素單元包括: 17 13-20162 趙赵钫^ 脉^修(更)正皆換?! 複數弟二溥膜電晶體,其鄰近該掃〜〜 ----;! 處設置; 線與該第二資料線之相交 複數第二像素電極,其與該第二薄膜電 複數第二靜態顯示元件,其包括卜^目連接, 薄膜電晶體相連接,該第二靜態顯示-子該端子與該第二 該第二像素電極提供顯示電壓;^在靜細示模式中為 一第二基板,其與該第一基板相對設置;及 一液晶層,其設置於該第一、第二基板之間。 8. 如申請專鄕圍第7項所狀液晶鮮吨, .極之面積與該第二像素電極之面積相等。〃中’該第—像素電 9. 如申請專鄕圍第7項所述之液:二,复中 極之面積與該第二像素電極之面積相显。-中’遠第-像素電 10. 如申請專利範圍第7項所述之液晶顯示面板 極之面積與該第二像素電極之面積之比值為以弟一像素電 11. 如申請專利範圍第7項所述之液晶顯示面板 =括-靜態隨機存取記憶體、一第三薄膜電晶體及 三薄膜電晶體之沒極與該靜態隨機存 接,其沒極與該靜態顯示元件之對外端子相連接。’端子相連 12. 如申請專利範圍第7項所述之液晶顯示面板,其中, 與該第-薄膜電晶體相連接之複數第一存儲電容,盘ς—f包括 晶體相連接之複數第二存儲電容。 、/弟一薄獏電 18 1320162 * 十一、圖式: 191320162 . X. Patent application scope: 1. A liquid crystal display panel driving circuit, comprising: • a plurality of scanning lines; a plurality of first data lines, which are insulated from the scanning lines; and a plurality of second data lines, A data line is parallel and insulatively intersects the scan line; the first and second data lines and the scan line define a plurality of pixel units, the pixel unit includes a first sub-pixel unit and a second sub-pixel unit, the first The sub-pixel unit includes: a plurality of first thin film transistors disposed adjacent to an intersection of the scan line and the first data line; a plurality of first pixel electrodes connected to the first thin film transistor; a plurality of first static displays An element comprising an external terminal, the terminal being connected to the first thin film transistor, the first static display element providing a display voltage for the first pixel electrode in a static display mode; the second sub-pixel unit comprising: a plurality of a second thin film transistor disposed adjacent to an intersection of the scan line and the second data line; a plurality of second pixel electrodes, and the second Membrane transistors are connected; a plurality of second static display elements including an external terminal connected to the second thin film transistor, the second static display element providing a display for the second pixel electrode in a static display mode Voltage. 2. The liquid crystal display panel driving circuit of claim 1, wherein an area of the first pixel electrode is equal to an area of the second pixel electrode. 3. The liquid crystal display panel driving circuit according to claim 1, wherein an area of the first pixel electrode is different from an area of the second pixel electrode. 4. The liquid crystal display panel driving circuit according to claim 1, wherein the ratio of the area of the electrode to the area of the second pixel electrode is 2: Bu Xiong The liquid crystal display panel driving circuit of the first aspect of the invention, wherein the static component includes a static random access clock, a third semiconductor, and a: film transistor The drain of the transistor is connected to the static random access memory, and is connected to the external terminal, and the source thereof is connected to the external terminal of the static display element. 4 The source of the fourth_transistor and the static random access memory (4) The other external 'is connected by the same, Wei Wei no static display component read external terminal. • One boat% specializes in the liquid crystal age panel axis circuit described in item 1, wherein the ?-= includes a plurality of first-storage capacitors connected to the 4th-thousand crystals, which is mixed with the first-dif crystal The plural is the second. 7. A liquid crystal display panel, comprising: a first substrate comprising: a plurality of scan lines; a plurality of first data lines intersecting the scan lines; and the second data line of the brothers The first data line is parallel and insulated from the scan line. The pixel unit, the first sub-pixel unit=the second data line and the scan line define a plurality of pixel units, a first sub-pixel unit and a second sub-pixel unit. The method includes: the intersection of the data lines, the first------the transistor is disposed adjacent to the scales; * the plurality of first pixel electrodes, the plurality of - (four) 16-body connections; the static-indicating element, which includes an external terminal film The crystal is connected, the first static display and the first pixel electrode provide a display voltage; and the second sub-pixel unit in the display mode comprises: 17 13-20162 Zhao Zhao钫^ 脉^修( More) are changing? a plurality of dice film transistors, which are disposed adjacent to the sweep ~~ ----;; a line intersects the second data line with a plurality of second pixel electrodes, and the second film is electrically plural second static a display element comprising a connection, a thin film transistor connected, the second static display-sub-terminal and the second second pixel electrode providing a display voltage; and a second substrate in the static display mode And disposed opposite to the first substrate; and a liquid crystal layer disposed between the first and second substrates. 8. If the application is for the liquid crystal fresh ton of item 7, the area of the pole is equal to the area of the second pixel electrode. In the middle of the — 该 像素 像素 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. 9. -中中远-pixel power 10. The ratio of the area of the liquid crystal display panel to the area of the second pixel electrode as described in claim 7 is the same as that of the second pixel electrode. The liquid crystal display panel of the present invention includes a static random access memory, a third thin film transistor, and a third thin film transistor, and the non-polarity of the liquid crystal display panel is connected to the external terminal of the static display element. connection. The liquid crystal display panel of claim 7, wherein the plurality of first storage capacitors connected to the first thin film transistor, the disk ςf includes a plurality of second storages connected by crystals capacitance. / / Brother a thin electric 18 1320162 * XI, schema: 19
TW94146297A 2005-12-23 2005-12-23 Driving circuit for liquid crystal display and liquid crystal display uses the driving circuit TWI320162B (en)

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TW94146297A TWI320162B (en) 2005-12-23 2005-12-23 Driving circuit for liquid crystal display and liquid crystal display uses the driving circuit

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TW94146297A TWI320162B (en) 2005-12-23 2005-12-23 Driving circuit for liquid crystal display and liquid crystal display uses the driving circuit

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TWI320162B true TWI320162B (en) 2010-02-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9336739B2 (en) 2010-07-02 2016-05-10 Semiconductor Energy Laboratory Co., Ltd. Liquid crystal display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9336739B2 (en) 2010-07-02 2016-05-10 Semiconductor Energy Laboratory Co., Ltd. Liquid crystal display device
TWI549110B (en) * 2010-07-02 2016-09-11 半導體能源研究所股份有限公司 Liquid crystal display device

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