TW200827889A - Liquid crystal display panel, liquid crystal display and driving method thereof - Google Patents
Liquid crystal display panel, liquid crystal display and driving method thereof Download PDFInfo
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200827889^ 3280PA 九、發明說明: 【發明所屬之技術領域】 本發明是有關於一種液晶顯示面板、液晶顯示器及其 驅動方法,且特別是有關於一種低色偏之液晶顯示面板、 液晶顯示器及其驅動方法。 【先前技術】 由於不同角度的入射光於液晶層中,所產生的位相差 值(Retardation)係不同,因此,當觀察角度不同時,光 ' 所受到的偏折係數不相同,導致穿透率也不一樣。所以, 不同視角會造成所顯示的光的亮度不同。而當不同色光 (例如紅色光、綠色光及藍色光)在正視與侧視時各以不同 亮度比例混色之後,則會產生正視與側視所顯示的顏色不 同的色偏現象(Color Shift)。 為了改善液晶顯示器的色偏現象,傳統做法係將一個 晝素分為兩個子晝素,各個子晝素均由一薄膜電晶體所控 ^ 制,因此可以分別提供略微不同的晝素電壓至同一晝素的 兩個子晝素,以改善色偏現象。 傳統晝素之等效電路圖 請參照第1圖,其繪示係為傳統晝素之等效電路圖。 傳統晝素110包括第一子晝素112、第二子晝素114、辅 助電極Ml及薄膜電晶體TFT3。寄生電容C〇D3係形成於 薄膜電晶體TFT3之閘極與汲極之間,且薄膜電晶體TFT3 6200827889^ 3280PA IX. Description of the Invention: [Technical Field] The present invention relates to a liquid crystal display panel, a liquid crystal display, and a driving method thereof, and more particularly to a low color shift liquid crystal display panel, a liquid crystal display and the same Drive method. [Prior Art] Since the incident light of different angles is in the liquid crystal layer, the phase difference (Retardation) is different. Therefore, when the observation angle is different, the deflection coefficient of the light 'is different, resulting in the transmittance. Not the same. Therefore, different viewing angles will cause the brightness of the displayed light to be different. When different color lights (such as red light, green light, and blue light) are mixed in different brightness ratios in front view and side view, a color shift phenomenon (Color Shift) of different colors displayed in front view and side view is generated. In order to improve the color shift of the liquid crystal display, the conventional method is to divide a morpheme into two sub-vedins, each of which is controlled by a thin film transistor, so that a slightly different halogen voltage can be separately supplied to Two sub-vegetarians of the same element to improve color shift. The equivalent circuit diagram of the traditional element is shown in Fig. 1, which shows the equivalent circuit diagram of the traditional element. The conventional halogen element 110 includes a first sub-tenoxine 112, a second sub-halogen 114, an auxiliary electrode M1, and a thin film transistor TFT3. The parasitic capacitance C 〇 D3 is formed between the gate and the drain of the thin film transistor TFT 3, and the thin film transistor TFT 3 6
200827889^3 280PA 之汲極係耦接至輔助電極M1。輔助+ CE之間係形成補助電容Q,且共同;_與共同電極 準係為v_ ’而輔助電容Cs兩端之電之電壓位 第-子晝素U 2更包括薄膜電:〜差:為:c S。 電極IT01。薄膜電晶體TFT1之汲 〇Τ1及弟一晝素 電極蘭,且第—晝素電極加至第-晝素 形成第-液晶電容CLC1及第—儲存電-極=之間係 CGD1#形成於薄膜電晶體TFT1 ST1而可生電容 楚-工金主 閑極與没極之間0 一旦素114更包括薄膜電晶體TFT2及第二查紊 電極—。薄膜電晶體TFT2之沒極 電極IT02,且第二晝素電極订 弟—旦素 ^„, t^ cLC2.,Γ4" CGD2係形成於_晶體tft2^s:=生電容 薄膜電晶體TFT1及TFT2之源極係減至資料線 120,且薄膜電晶體及咖之閘極餘接至第一掃 描線! 30⑻,而薄膜電晶體Tm之沒極係搞接薄膜電晶 體TFT3之源極。 薄膜電晶體TFT3之閘極係輕接至第二掃描線 130(n+l) ’第二掃描線l30(n+1)為與第一掃描線13〇⑻相 鄰之下一條掃描線。當薄膜電晶體TFT3^下一個掃描信 號S(n+1)致能後,第二液晶電容Clc2兩端的電壓差Vlc2 將小於弟一液晶電谷CLci兩端的電壓差vlci,使得第二 子晝素114的穿透率低於第一子晝素112,而達到低色偏 (Low Color Shift)的效果。The drain of the 200827889^3 280PA is coupled to the auxiliary electrode M1. Auxiliary + CE forms a supplementary capacitance Q, and is common; _ and the common electrode is v_ ' and the voltage of the electric current across the auxiliary capacitor Cs is further included in the film: - poor: :c S. Electrode IT01. The thin film transistor TFT1 is formed on the film, and the first halogen electrode is added to the first halogen element to form the first liquid crystal capacitor CLC1 and the first storage electrode is formed between the film and the CGD1#. The transistor TFT1 ST1 can generate a capacitance Chu-working gold main idle pole and the pole between the zero once the 114 further includes the thin film transistor TFT2 and the second detector electrode. The thin film transistor TFT2 has the electrode No. IT02, and the second halogen electrode is ordered to be the same as the first element, t^ cLC2., Γ4" CGD2 is formed in the _ crystal tft2^s: = the biocapacitor film TFT1 and TFT2 The source is reduced to the data line 120, and the thin film transistor and the gate of the coffee are connected to the first scan line! 30(8), and the thin film transistor Tm is connected to the source of the thin film transistor TFT3. The gate of the crystal TFT 3 is lightly connected to the second scan line 130 (n+1). The second scan line l30 (n+1) is a scan line adjacent to the first scan line 13 〇 (8). After the next scan signal S(n+1) is enabled, the voltage difference Vlc2 across the second liquid crystal capacitor Clc2 will be smaller than the voltage difference vlci across the liquid crystal cell CLci, so that the second sub-halogen 114 is worn. The transmittance is lower than that of the first sub-stimulus 112, and the effect of low color shift (Low Color Shift) is achieved.
200827889W32SOPA 梦 傳A皇.素冬a 其繪示係為傳統晝200827889W32SOPA Dream Passing A Emperor Su Dong a The painting is traditional
請參照第2圖,其繪示 首先在時間h至t2之間,v 電容CGD3所造成之饋穿效應而將改變為。 基於相同的工作原理,第一晝素電極IT01及第二晝 素電極ΙΤ02之極性反轉後’傳統晝素ι1〇在時間t5至t6 之間,VLC1及VLC2分別因電容充電效應而缓步增加為 (V5-VC〇m)。接著於時間Ϊ6時,VLC1及VLC2分別因寄生電 容CGD1& CGD2所造成之饋穿效應而增加為(V2-V_)。跟 著於時間t7時,VLC2將因輔助電容Cs產生電荷分享效應 而減少為(ν7-ν_〇。然後於時間ts時,VLC2將因寄生電容 CGD3所造成之饋穿效應而將改變為(V8-VC()m)。 由此可知’在時間(3至丨5之間及時間t7至t9之間’ 第二液晶電容cLC2兩端的電壓差VLC2小於第一液晶電容 CLC1兩端的電壓差VLC1。因此’第二子晝素114的穿透率 將低於第一子晝素112,而達到低色偏(Low Color Shift) 的效果。 然而,由於第二子晝素H4的穿透率低於第一子晝素 112,因此,將會造成傳統晝素110的整體穿透率下降, 8Please refer to Fig. 2, which shows that the feedthrough effect caused by the v capacitor CGD3 will change to between first time and time t to t2. Based on the same working principle, the polarity of the first halogen electrode IT01 and the second halogen electrode ΙΤ02 is reversed. 'Traditional 昼素ι1〇 is between time t5 and t6, and VLC1 and VLC2 are slowly increased due to the capacitance charging effect. For (V5-VC〇m). Then, at time Ϊ6, VLC1 and VLC2 are increased to (V2-V_) due to the feedthrough effect caused by the parasitic capacitance CGD1 & CGD2, respectively. Following time t7, VLC2 will be reduced to (ν7-ν_〇) due to the charge sharing effect of the auxiliary capacitor Cs. Then at time ts, VLC2 will change to (V8) due to the feedthrough effect caused by the parasitic capacitance CGD3. -VC()m) This shows that the voltage difference VLC2 across the second liquid crystal capacitor cLC2 is less than the voltage difference VLC1 across the first liquid crystal capacitor CLC1 during the time (between 3 and 丨5 and between times t7 and t9). Therefore, the transmittance of the second sub-halogen 114 will be lower than that of the first sub-halogen 112, and the effect of low color shift (Low Color Shift) is achieved. However, since the transmittance of the second sub-halogen H4 is lower than The first sub-stimulus 112, therefore, will cause the overall transmittance of the conventional alizarin 110 to decrease, 8
200827889 W3280PA ^ 使得液晶顯示器的整體晝面亮度隨之下降,而影響其晝面 品質。 【發明内容】 有鑑於此,本發明的目的就是在提供一種液晶顯示面 板、液晶顯示器及其驅動方法。在第一晝素電極及辅助電 極之間形成一回饋電容,並藉由回饋電容提高第一液晶電 容兩端之電壓差,以提高晝素的整體穿透率,進而提高液 晶顯示器的整體亮度。200827889 W3280PA ^ The overall brightness of the LCD monitor is reduced, which affects the quality of the face. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a liquid crystal display panel, a liquid crystal display, and a driving method thereof. A feedback capacitor is formed between the first pixel electrode and the auxiliary electrode, and the voltage difference between the first liquid crystal capacitor is increased by the feedback capacitor to improve the overall transmittance of the pixel, thereby improving the overall brightness of the liquid crystal display.
C 根據本發明的目的,提出一種液晶顯示面板。液晶顯 示面板包括資料線、第一掃描線、第二掃描線及晝素,且 第二掃描線係為與第一掃描線相鄰之下一條掃描線。 晝素包括第一子晝素、第二子晝素、第三開關、輔助 電容及回饋電容,且第一子晝素及第二子晝素分別包括第 一開關及第二開關。第一開關具有第一輸入端、第一受控 端及第一輸出端,而第二開關具有第二輸入端、第二受控 / 端及第二輸出端。 第一輸入端及第二輸入端係耦接至該資料線,而第一 受控端及第二受控端係耦接至第一掃描線。第一輸出端係 經回饋電容耦接至第三輸出端,且第三輸出端係經輔助電 容耦接至一共同電極。 由於回饋電容係形成於第一輸出端及第三輸出端之 間,因此,將提升畫素之整體穿透率,進而提高液晶顯示 器的整體晝面亮度。 9C According to the purpose of the present invention, a liquid crystal display panel is proposed. The liquid crystal display panel includes a data line, a first scan line, a second scan line, and a halogen, and the second scan line is a scan line adjacent to the first scan line. The halogen element includes a first sub-tendin, a second sub-tendin, a third switch, an auxiliary capacitor, and a feedback capacitor, and the first sub-element and the second sub-element include a first switch and a second switch, respectively. The first switch has a first input, a first controlled end and a first output, and the second switch has a second input, a second controlled end and a second output. The first input end and the second input end are coupled to the data line, and the first controlled end and the second controlled end are coupled to the first scan line. The first output is coupled to the third output via a feedback capacitor, and the third output is coupled to a common electrode via the auxiliary capacitor. Since the feedback capacitor is formed between the first output terminal and the third output terminal, the overall transmittance of the pixel is improved, thereby improving the overall brightness of the liquid crystal display. 9
200827889議PA 一根據本發明的另一目的,提出一種液晶顯示器。液晶 顯不器包括液晶顯示面板、掃描驅動器及資料驅動哭,且 液晶I員示面板包括資料線、第—掃描線、第二掃插二及晝 ί i ΐ二掃描線係為與第—掃描線相鄰之下1掃描線, ^帚描線及第二掃描線係耦接至掃描驅動器,而資料線 係耦接至資料驅動器。 、 W晝素包括第—子晝素、第二子晝素、第三開關、輔助 兒谷及回饋電容,且第一子晝素及第二子晝素分別包括第 :開關及第二開關。第一開關具有第一輸入端、第一受控 =及第一輸出端,而第二開關具有第二輸入端、第二受控 端及第二輸出端。 工 ^ 第一輸入端及第二輸入端係耦接至該資料線,而第一 … h及弟一^受控端係搞接至弟一掃描線。第一輪出端係 t回饋電容耦接至第三輸出端,且第三輸出端係經辅助電 夺耦接至一共同電極。 ί \ 由於回饋電容係形成於第一輸出端及第三輸出端之 2 ’因此,將提升晝素之整體穿透率,進而提高液晶顯示 器的整體畫面亮度。 根據本發明的再一目的,提出一種液晶顯示器之驅動 方法。液晶顯示器包括一液晶顯示面板,且液晶顯示面板 括身料線、第一掃描線、弟一知描線及畫素。晝素至少 包括第一子晝素及第二子晝素,第一子晝素及第二子晝素 刀別包括第一開關及第二開關。According to another object of the present invention, a liquid crystal display is proposed. The liquid crystal display device includes a liquid crystal display panel, a scan driver and a data drive crying, and the liquid crystal I member display panel includes a data line, a first scan line, a second scan line 2, and a second scan line system and a first scan. The scan line is connected to the scan driver, and the data line is coupled to the data driver. The enthalpy includes a first sub-halogen, a second sub-halogen, a third switch, an auxiliary valley, and a feedback capacitor, and the first sub-element and the second sub-element include a first switch and a second switch, respectively. The first switch has a first input, a first controlled = and a first output, and the second switch has a second input, a second controlled end and a second output. The first input end and the second input end are coupled to the data line, and the first ... h and the second control end are connected to the scan line. The first output terminal is coupled to the third output terminal, and the third output terminal is coupled to a common electrode via the auxiliary. ί \ Since the feedback capacitor is formed at the first output terminal and the third output terminal 2', the overall transmittance of the pixel is increased, thereby improving the overall picture brightness of the liquid crystal display. According to still another object of the present invention, a driving method of a liquid crystal display is proposed. The liquid crystal display comprises a liquid crystal display panel, and the liquid crystal display panel comprises a body line, a first scan line, a disciple line and a pixel. The pixel includes at least a first sub-element and a second sub-element, and the first sub-element and the second sub-element include a first switch and a second switch.
200827889^ 3280PA - 驅動方法包括如下步驟:首先,致能第一開關及第二 開關,第一開關具有第一輸入端、第一受控端及第一輸出 端,第二開關具有第二輸入端、第二受控端及第二輸出 端,第一輸入端及第二輸入端係耦接至資料線,第一受控 端及第二受控端係搞接至第一掃描線。 接著,致能第三開關,第三開關具有第三輸入端、第 三受控端及第一三輸出端,第三輸入端係耦接至第二輸出 端,第三受控端係耦接至第二掃描線,第二掃描線係為與 第一掃描線相鄰之下一條掃描線,第三輸出端係經一輔助 ( 電容耦接至一共同電極,且第三輸出端係經一回饋電容耦 接至第一輸出端。 由於回饋電容係形成於第一輸出端及第三輸出端之 間,因此,將提升晝素之整體穿透率,進而提高液晶顯示 器的整體晝面亮度。 為讓本發明之上述目的、特徵、和優點能更明顯易 懂,下文特舉一較佳實施例,並配合所附圖式,作詳細說 明如下: \ 【實施方式】 液晶顯示器之示意圖 請參照第3圖,其繪示係為液晶顯示器之示意圖。液 晶顯示器20包括液晶顯示面板30、資料驅動器40及掃描 驅動器5 0。液晶顯示面板3 0包括多個畫素310、資料線 320、掃描線330(1)至330(N)。資料驅動器40耦接至資料 11 200827889,3280ΡΛ - 線320,並經資料線320輸出對應之資料信號D⑴至D(M) 至晝素310。而掃描驅動器50耦接至掃描線330(1)至 330(N),並經掃描線330(1)至330(N)輸出掃描信號S(l)至 S(N)以依序致能各列晝素310。 書素之等效電路圖 為方便說明起見,下述晝素310中之第一開關Q1、 第二開關Q2及第三開關Q3係以薄膜電晶體(Thin Film r .. Transistor, TFT)為例說明,而各開關之第一至第三輸入端200827889^ 3280PA - The driving method comprises the following steps: First, the first switch and the second switch are enabled, the first switch has a first input end, a first controlled end and a first output end, and the second switch has a second input end The second controlled end and the second output end are coupled to the data line, and the first controlled end and the second controlled end are connected to the first scan line. Then, the third switch is enabled, the third switch has a third input end, a third controlled end, and a first three output end, the third input end is coupled to the second output end, and the third controlled end is coupled To the second scan line, the second scan line is a scan line adjacent to the first scan line, and the third output end is coupled via an auxiliary (capacitively coupled to a common electrode, and the third output end is via a The feedback capacitor is coupled to the first output end. Since the feedback capacitor is formed between the first output end and the third output end, the overall transmittance of the pixel is increased, thereby improving the overall brightness of the liquid crystal display. The above described objects, features, and advantages of the present invention will become more apparent and understood from the following description. 3 is a schematic diagram showing a liquid crystal display. The liquid crystal display 20 includes a liquid crystal display panel 30, a data driver 40, and a scan driver 50. The liquid crystal display panel 30 includes a plurality of pixels 310, data lines 320, and scan lines. 330(1) to 330(N). The data driver 40 is coupled to the data 11 200827889, 3280 ΡΛ - line 320, and outputs the corresponding data signals D(1) to D(M) to the pixel 310 via the data line 320. The scan driver 50 Coupling to scan lines 330(1) to 330(N), and outputting scan signals S(1) to S(N) via scan lines 330(1) to 330(N) to sequentially enable each column of pixels 310 The equivalent circuit diagram of the book element is convenient for explanation. The first switch Q1, the second switch Q2 and the third switch Q3 in the following unit 310 are made of thin film transistors (Thin Film r.. Transistor, TFT). For example, the first to third inputs of each switch
I 以源極為例說明,且第一至第三受控端以閘極為例說明, 第一至第三輸出端則以汲極為例說明。 ’ 請參照第4圖,其繪示係為依照本發明較佳實施例之 晝素之等效電路圖。晝素310包括第一子晝素312、第二 子晝素314、輔助電極M2及薄膜電晶體TFT3。寄生電容 CGD3係形成於薄膜電晶體TFT3之閘極與汲極之間,且薄 膜電晶體TFT3之汲極係耦接至辅助電極M2。輔助電極 ^ M2與共同電極CE之間係形成輔助電容Cs,且共同電極 CE上之電壓位準係為VCC)m,而辅助電容Cs兩端之電壓差 係為Vcs 〇 第一子晝素312更包括第一開關Q1及第一晝素電極 IT01。第一開關Q1之汲極端係耦接至第一晝素電極 IT01,且回饋電容CSP係形成於第一晝素電極IT01與輔 助電極M2之間。第一畫素電極IT01與共同電極CE之間 係形成第一液晶電容CLC1&第一儲存電容CST1,而寄生電 12I is illustrated by the source example, and the first to third controlled ends are illustrated by a gate example, and the first to third output terminals are illustrated by way of example. Referring to Figure 4, there is shown an equivalent circuit diagram of a halogen in accordance with a preferred embodiment of the present invention. The halogen element 310 includes a first sub-halogen 312, a second sub-halogen 314, an auxiliary electrode M2, and a thin film transistor TFT3. The parasitic capacitance CGD3 is formed between the gate and the drain of the thin film transistor TFT3, and the drain of the thin film transistor TFT3 is coupled to the auxiliary electrode M2. An auxiliary capacitor Cs is formed between the auxiliary electrode ^M2 and the common electrode CE, and the voltage level on the common electrode CE is VCC)m, and the voltage difference across the auxiliary capacitor Cs is Vcs 〇 the first sub-element 312 The first switch Q1 and the first halogen electrode IT01 are further included. The first pole of the first switch Q1 is coupled to the first halogen electrode IT01, and the feedback capacitor CSP is formed between the first halogen electrode IT01 and the auxiliary electrode M2. A first liquid crystal capacitor CLC1 & a first storage capacitor CST1 is formed between the first pixel electrode IT01 and the common electrode CE, and the parasitic power 12
200827889 W3280PA 容 C〇di 係形成於第一開關Q1 第二子晝素犯更包括極之間。 IT02。第二開關Q2之汲極端係輪及第二晝素電極 IT02,且第二晝素電極ΓΓ〇2與共$ ^第二晝素電極 第二液晶電容CLC2及第二儲存電、容同電極CE之間係形成 係形成於第二開關Q2之閘極與及^°订2’而寄生電容CGE>2 第一開關Q1及第二開關Q2 之間: c200827889 W3280PA The capacitance C〇di system is formed in the first switch Q1. IT02. The second switch Q2 has an 系 extreme wheel and a second 电极 element electrode IT02, and the second 昼 ΓΓ〇 electrode ΓΓ〇 2 and the common ^ second 昼 电极 electrode second liquid crystal capacitor CLC2 and the second storage battery, the same electrode CE The system is formed between the gate of the second switch Q2 and the gate 2C and the parasitic capacitance CGE>2 between the first switch Q1 and the second switch Q2: c
320,且第一開關Q1及第二開關源極係耦接至資料線 線330⑴至33_中之-第—掃1之閉極係耗接至掃描 Q2之沒極係祕第三開關q3之:極33G(n)’而第二開關 士第ί開關Φ之間極係姻至^描線聊)至33_ 中之Μ-知描線330(n+1),第二掃描線33〇㈣)為愈第 :掃,33〇(n)相鄰之下-條掃插線。當第三開關φ被 雜後,第二液晶電容%兩端的電壓差^將小於第 -液晶電$cLC1兩端的電壓差%,使得第二子晝素314 的穿透率低於第-子晝素312,而達到低色偏(LQwC〇i〇r Shift)的效果。 ^為了避免因輔助電容Cs的電荷分享(Charge Sharing) ^應而IV低晝素的整體穿透率,回饋電容&係被形成於 第-,素電極iToi與辅助電極M2之間。#第三開關Q3 被致=後,第一液晶電容Clci兩端的電壓差將因回 饋,,Csp而增加,使得第—子晝素312的穿透率對應地 ,,同。因此,晝素310的整體穿透率將隨之被提高,而 提高液晶顯示器20的整體晝面亮度。 13 200827889/328〇pa # 回饋電容 請同時參照第5圖及第6圖,第5圖繪示係為回饋電 谷及輔助龟各之饰局圖,而第6圖繪示係為第5圖中沿 A A d面、、表之示意圖。第三開關Qg之没極係輕接至一辅 助電極,2,輔助電極M2與共同電極CE之疊合處係形成 辅助電容cs,且補助電極M2與第一晝素電極汀⑴之疊 合處係形成輔助電容CSP。 r 韋素之 A_ 清茶照第7圖,其繪示係為晝素之信號波形圖。首先 在時間^至。之間,第一液晶電容Clci兩端的電壓差V]lci 及第二液晶電容cLC2兩端的電壓差vLC2分別因電容充電 效應而緩步增加為(VrVcc)m)。 接者於間t2時’ Vlci及VlC2分別因寄生電容CgdI 及CGD2所造成之饋穿效應(Feed_Through Effect)而減少為 (V2"*Vcom)。 跟著於時間t3時,vLC2將因輔助電容cs產生電荷分 享(Charge Sharing)效應而由(V2-V_)減少為(V3_Vc〇m),而 VLC1將因回饋電容CSP耦接於第一晝素電極ΠΌ1及辅助 電極M2之間而由(V2_Vc〇m)增加為(VirVc〇m)。 然後於時間t4時,VLC2將因寄生電容CGD3所造成之 饋穿效應而由減少為(V4-Vcom) ’而Vlci將因寄生 電容CGD3所造成之饋穿效應而由(Vii_Vc〇m)減少為 (V12-^ com) 14320, and the first switch Q1 and the second switch source are coupled to the data line 330 (1) to 33_ - the first closed circuit of the first sweep is connected to the third switch q3 of the scanning Q2 : pole 33G (n) 'and the second switch 第 开关 switch Φ between the extreme marriage to ^ tracing) to 33_ Zhongzhi 知 - know the line 330 (n + 1), the second scan line 33 〇 (four)) The more: the sweep, 33 〇 (n) adjacent to the - sweep line. When the third switch φ is mixed, the voltage difference across the second liquid crystal capacitor % will be less than the voltage difference % across the first liquid crystal $cLC1, so that the transmittance of the second sub-halogen 314 is lower than the first sub-昼312, and achieve the effect of low color shift (LQwC〇i〇r Shift). ^ In order to avoid the charge sharing of the auxiliary capacitor Cs, the feedback capacitance & is formed between the first-, elementary electrode iToi and the auxiliary electrode M2. After the third switch Q3 is induced, the voltage difference across the first liquid crystal capacitor Clci will increase due to feedback, Csp, so that the transmittance of the first sub-halogen 312 corresponds to the same, and the same. Therefore, the overall transmittance of the halogen 310 will be increased, and the overall brightness of the liquid crystal display 20 will be improved. 13 200827889/328〇pa # Please refer back to Figure 5 and Figure 6 for the feedback capacitor. Figure 5 shows the decoration of the electric valley and the auxiliary turtle, and the figure 6 is the fifth picture. In the middle of the AA d surface, the schematic diagram of the table. The third switch Qg is lightly connected to an auxiliary electrode, 2. The auxiliary electrode M2 and the common electrode CE are superposed to form an auxiliary capacitor cs, and the auxiliary electrode M2 is overlapped with the first halogen electrode (1). A storage capacitor CSP is formed. r Wei Suzhi A_ Qingcha Zhao Figure 7, which is a signal waveform diagram of the alizarin. First at time ^ to. Between the voltage difference V]lci across the first liquid crystal capacitor Clci and the voltage difference vLC2 across the second liquid crystal capacitor cLC2, the voltage difference vLC2 across the second liquid crystal capacitor cLC2 is gradually increased to (VrVcc)m) due to the capacitance charging effect. At the time of t2, Vlci and VlC2 are reduced to (V2"*Vcom) due to the feed-through effect caused by the parasitic capacitances CgdI and CGD2, respectively. Following time t3, vLC2 will be reduced from (V2-V_) to (V3_Vc〇m) due to the charge sharing effect of the auxiliary capacitor cs, and VLC1 will be coupled to the first pixel electrode by the feedback capacitor CSP. Between 1 and the auxiliary electrode M2 is increased from (V2_Vc〇m) to (VirVc〇m). Then at time t4, VLC2 is reduced to (V4-Vcom) by the feedthrough effect caused by parasitic capacitance CGD3, and Vlci is reduced from (Vii_Vc〇m) by (Vii_Vc〇m) due to the feedthrough effect caused by parasitic capacitance CGD3. (V12-^ com) 14
200827889 W3280PA 基於相同的工作原理,第一晝素電極IT01及第二晝 素電極IT02之極性反轉後,晝素310在時間1:5至t6之間, VLC1及VLC2分別因電容充電效應而緩步增加為(V5-Vc·)。 接著於時間t6時,V LC1及VlC2分別因寄生電容CGD1 及CGD2所造成之饋穿效應(Feed-Through Effect)而增加為 (V6-Vcom)〇 跟著於時間t7時,VLC2將因輔助電容cs產生電荷分 享(Charge Sharing)效應而由(v6_Vcc>m)減少為(V7-Vc(>m),而 VLC1將因回饋電容CSP耦接於第一晝素電極IT01及辅助 電極Μ2之間而由(VrVcom)增加為(V13_Vcom)。 然後於時間時,Vlc2將因寄生電容Cgd3所造成之 饋穿效應而由(v^vcom)增加為(ν8-ν。。^),而Vlci將因寄生 電容cG〇3所造成之饋穿效應而由(Vi3_Vc㈣)增加為 (Vi4-Vcom) 〇200827889 W3280PA Based on the same working principle, after the polarity of the first halogen electrode IT01 and the second halogen electrode IT02 is reversed, the halogen element 310 is between 1:5 and t6, and VLC1 and VLC2 are slowed down due to the capacitor charging effect. The step is increased to (V5-Vc·). Then at time t6, V LC1 and VlC2 are increased to (V6-Vcom) due to the feed-through effect caused by parasitic capacitances CGD1 and CGD2, respectively. When time t7 is followed, VLC2 will be due to the auxiliary capacitor cs. The charge sharing effect is generated and reduced from (v6_Vcc>m) to (V7-Vc(>m), and VLC1 is coupled between the first halogen electrode IT01 and the auxiliary electrode Μ2 by the feedback capacitor CSP. Increased from (VrVcom) to (V13_Vcom). Then at time, Vlc2 will increase from (v^vcom) to (ν8-ν.^^) due to the feedthrough effect caused by parasitic capacitance Cgd3, while Vlci will be parasitic The feedthrough effect caused by the capacitance cG〇3 is increased from (Vi3_Vc(4)) to (Vi4-Vcom) 〇
由於晝素310在日寺間t3至t5之間及時間t7至t9之間, 第二液晶電容CLC2兩端的電壓差u略小於第一液晶 電容cLC1兩端的電覆差Vlci,因此,子晝素314的穿透 率將低於子畫素312,而達到低色偏(L〇w c〇lor shift)的效 果0 為了避免因辅助電容cs的電荷分享(Charge Sharing) 效應而降低畫素的整體穿透率,回饋電容Csp係被形成於 第-晝素電極加1與辅助電極M2之間,由於辅助電容 Cs兩端之電絲Ves上升,所以藉由回饋電容&之回饋 使知ITO1的私位亦會跟著上升;另外,根據電荷不滅定 15 200827889v328〇pa •律,即(V3-》)xCsp气v『v2)x(cLC1+cstl),隨著 vcs 由 va 上升為V3時,VLC1亦會由v2上升為Vii。藉此提高第一 子晝素312之穿透率。 由第2圖繪示可知,傳統晝素110之VLC1在時間t2 至t5之間係為(Hm),而在時間1;6至t9之間VLC1係為 CVVVcoj。但由第7圖繪示中可清楚地看出,畫素31〇之 Vlci在時間t3至t4之間係為大於(V2-Vc〇m)2(v『Vc_), 而在時間t7至t8之間Vun係為大於(V6-VC()m)之 C (V『Vc⑽)。且晝素310之%在時間t4至t5之間係為大 於(V2-Vc()m)之(v12-vc()m),而在時間t8至t9之間係為 大於(v6-vec)m)之(v14_u。 '' 由此可知,在時間13至15之間及在時間17至19之間, 晝素310之VLCdf大於傳統晝素11〇,使得第一子晝素 之穿透率高於傳統第-子晝素112。因此,晝素之整 體穿透率將隨之提升,以提高液晶顯示器2G的整體亮度。Since the pixel 310 is between t3 and t5 and between time t7 and t9, the voltage difference u across the second liquid crystal capacitor CLC2 is slightly smaller than the difference Vlci between the two ends of the first liquid crystal capacitor cLC1. The penetration rate of 314 will be lower than that of sub-pixel 312, and the effect of low color shift (L〇wc〇lor shift) is achieved. 0 In order to avoid the reduction of the overall wear of pixels due to the charge sharing effect of the auxiliary capacitor cs. The transmittance, the feedback capacitor Csp is formed between the first-deuterium electrode plus 1 and the auxiliary electrode M2, and since the wire Ves across the auxiliary capacitor Cs rises, the feedback of the feedback capacitor & The bit will also rise; in addition, according to the charge is not extinguished 15 200827889v328〇pa • law, ie (V3-)) xCsp gas v 『v2) x (cLC1 + cstl), as vcs rise from va to V3, VLC1 also Will rise from v2 to Vii. Thereby, the transmittance of the first sub-halogen 312 is improved. As can be seen from Fig. 2, VLC1 of the conventional halogen 110 is (Hm) between time t2 and t5, and VLC1 is CVVVcoj between time 1; 6 and t9. However, as can be clearly seen from the drawing of Fig. 7, the Vlci of the pixel 31 is greater than (V2-Vc〇m) 2 (v "Vc_) between time t3 and t4, and at time t7 to t8. The V between is greater than (V6-VC()m) C (V "Vc(10)). And the % of the halogen element 310 is greater than (V2-Vc()m) (v12-vc()m) between time t4 and t5, and is greater than (v6-vec) between time t8 and t9. m) (v14_u. '' It can be seen that between time 13 and 15 and between time 17 and 19, the VLCdf of the alizarin 310 is larger than the conventional alizarin 11〇, so that the transmittance of the first sub element It is higher than the traditional first-sub-small 112. Therefore, the overall transmittance of the alizarin will be increased to improve the overall brightness of the liquid crystal display 2G.
液晶顯示器的驅動方法 請參照第8圖,其緣示係為一種液晶顯示器之驅動方 法流程圖。驅動方法係用於前述之液晶顯示器2 0,且 方法包括如下步驟: 首先如步驟810所示,致能第一開關Q1及第二開關 Q 2,第-開關Q i及第二開關Q 2之源極係姻至資] 320 ’第一開關Q1及第二開關Q2之閘極係耦接至第― 描線330(n)。 平 16How to drive the liquid crystal display Refer to Figure 8, which is a flow chart of the driving method of the liquid crystal display. The driving method is used for the foregoing liquid crystal display 20, and the method includes the following steps: First, as shown in step 810, the first switch Q1 and the second switch Q2, the first switch Q i and the second switch Q 2 are enabled. The gate of the first switch Q1 and the second switch Q2 is coupled to the first line 330(n). Flat 16
200827889 W3280PA 接著如步驟820所示,致能第三開關Q3,第三開關 Q3之源極耦接至第二開關Q2之汲極,第三開關Q3之閘 極係耦接至第二掃描線330(n+l),第二掃描線330(n+l)係 為與第一掃描線330(n)相鄰之下一條掃描線,第三開關Q3 之汲極經輔助電容Cs耦接至共同電極CE,且第三開關Q3 之没極經回饋電容CSP耗接至第一開關Q1之没極。 由於第三開關Q3被致能後,第一液晶電容CLC1兩端 之電壓差VLC1將因回饋電容CSP耦接於第三開關Q3之汲 極與第一開關Q1之汲極之間而提高。所以,晝素310之 整體穿透率將被提升,而提高液晶顯示器20的整體晝面 亮度。 本發明上述實施例所揭露之液晶顯示面板、液晶顯示 器及其驅動方法,藉由於第一晝素電極及輔助電極間形成 一回饋電容,使得晝素之整體穿透率被提升,進而提高液 晶顯示器的整體晝面亮度。 綜上所述,雖然本發明已以一較佳實施例揭露如上, 然其並非用以限定本發明。本發明所屬技術領域中具有通 常知識者,在不脫離本發明之精神和範圍内,當可作各種 之更動與潤飾。因此,本發明之保護範圍當視後附之申請 專利範圍所界定者為準。 17200827889 W3280PA, as shown in step 820, enabling the third switch Q3, the source of the third switch Q3 is coupled to the drain of the second switch Q2, and the gate of the third switch Q3 is coupled to the second scan line 330. (n+1), the second scan line 330 (n+1) is a scan line adjacent to the first scan line 330(n), and the drain of the third switch Q3 is coupled to the common capacitor Cs. The electrode CE, and the pole of the third switch Q3 is consumed by the feedback capacitor CSP to the pole of the first switch Q1. After the third switch Q3 is enabled, the voltage difference VLC1 across the first liquid crystal capacitor CLC1 is increased by coupling the feedback capacitor CSP between the anode of the third switch Q3 and the drain of the first switch Q1. Therefore, the overall transmittance of the halogen 310 will be improved, and the overall brightness of the liquid crystal display 20 will be improved. The liquid crystal display panel, the liquid crystal display and the driving method thereof disclosed in the above embodiments of the present invention, by forming a feedback capacitor between the first halogen electrode and the auxiliary electrode, the overall transmittance of the halogen is improved, thereby improving the liquid crystal display. The overall picture brightness. In view of the above, the present invention has been disclosed in a preferred embodiment, and is not intended to limit the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. 17
200827889 W3280PA 【圖式簡單說明】 第1圖繪示係為傳統晝素之等效電路圖。 第2圖繪示係為傳統晝素之信號波形圖。 第3圖繪示係為液晶顯示器之示意圖。 第4圖繪示係為依照本發明較佳實施例之晝素之等 效電路圖。 第5圖繪示係為回饋電容及輔助電容之佈局圖。 第6圖繪示係為回饋電容及輔助電容之剖面示意圖。 第7圖繪示係為晝素之信號波形圖。 第8圖繪示係為一種液晶顯示器之驅動方法流程圖。 【主要元件符號說明】 2 0 ·液晶顯不為 3 0 ·液晶顯不面板 4 0 ·貢料驅動為 5 0 :掃描驅動器 310 :晝素 320 :資料線 330(1)〜330(N):掃描線 330(n) ··第一掃描線 330(n+l) ··第二掃描線 110 :傳統晝素 112、312 :第一子晝素 114、314 :第二子晝素 18200827889 W3280PA [Simple description of the diagram] Figure 1 shows the equivalent circuit diagram of the traditional halogen. Figure 2 is a diagram showing the signal waveforms of a conventional halogen. Figure 3 is a schematic diagram showing a liquid crystal display. Figure 4 is a diagram showing the equivalent circuit diagram of a pixel in accordance with a preferred embodiment of the present invention. Figure 5 shows the layout of the feedback capacitor and the auxiliary capacitor. Figure 6 is a schematic cross-sectional view showing the feedback capacitor and the auxiliary capacitor. Figure 7 shows the signal waveform of the system. FIG. 8 is a flow chart showing a driving method of a liquid crystal display. [Main component symbol description] 2 0 · LCD display is not 3 0 · LCD display panel 4 0 · tribute drive is 5 0 : Scan driver 310 : Alizarin 320 : Data line 330 (1) ~ 330 (N): Scan line 330(n) ··first scan line 330(n+l) ··Second scan line 110: conventional pixel 112, 312: first sub-element 114, 314: second sub-salm 18
200827889 W3280PA 120、320 :資料線 130(n)、330(n) ·•第一掃描線 130(n+l)、330(n+l) ··第二掃描線 TFT :薄膜電晶體 CE :共同電極200827889 W3280PA 120, 320: data line 130(n), 330(n) ·•first scan line 130(n+l), 330(n+l) ··second scan line TFT: thin film transistor CE: common electrode
Ml、M2 :輔助電極 IT01 ··第一晝素電極 IT02 :第二晝素電極Ml, M2: auxiliary electrode IT01 · · first halogen electrode IT02 : second halogen electrode
Cixi :第一液晶電容Cixi: The first liquid crystal capacitor
ClC2 :第二液晶電容ClC2: second liquid crystal capacitor
Csti ·第一儲存電容Csti · first storage capacitor
CsT2 ·第二儲存電容 cs:輔助電容 cSP:回饋電容CsT2 ·Second storage capacitor cs: auxiliary capacitor cSP: feedback capacitor
CgDI、CgD2、CgD3 : 寄生電容 Q1 :第一開關 Q2 :第二開關 Q3 ··第三開關 19CgDI, CgD2, CgD3 : Parasitic capacitance Q1 : First switch Q2 : Second switch Q3 · · Third switch 19
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI408474B (en) * | 2009-04-24 | 2013-09-11 | Innolux Corp | Subpixel structure and liquid crystal display panel |
TWI459367B (en) * | 2012-06-06 | 2014-11-01 | Innocom Tech Shenzhen Co Ltd | Display and driving method thereof |
TWI483050B (en) * | 2011-03-31 | 2015-05-01 | Innolux Corp | Pixel array subsrate, liquid crystal display and repairing method for pixel array subsrate |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI408474B (en) * | 2009-04-24 | 2013-09-11 | Innolux Corp | Subpixel structure and liquid crystal display panel |
TWI483050B (en) * | 2011-03-31 | 2015-05-01 | Innolux Corp | Pixel array subsrate, liquid crystal display and repairing method for pixel array subsrate |
TWI459367B (en) * | 2012-06-06 | 2014-11-01 | Innocom Tech Shenzhen Co Ltd | Display and driving method thereof |
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