201124974 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種液晶顯示裝置。 [0002] 【先前技術】 液晶顯示器因其具有低輕射性 點，所以在使用上日漸廣泛， 和創新，種類也日益繁多。 、輕薄短小及耗電低等特 而且隨著相關技術的成熟 [0003] ❹ [0004] 〇 請參閱圖1，先前技術中的、；^曰Β 晶顯示器10包括液晶 、時序控㈣12、掃描驅_3、資料驅動器14和八^ 電壓產生器15。掃描驅動器13和資料驅動_ = 液晶面仙，時序㈣器加來驅崎描㈣器動 料駆動⑽，公共«產“,15絲為減 = 公共電壓。 〖饫供 液晶面板11包衫條平行的掃描線131、多條平r 描線垂直的相交的資料線14丨、—條公以un 膜電晶體16、多個晝素電極17及與畫素電極17相對、 的公共電極18。 又置 _薄膜電晶㈣的柵極、源極和祕分別 、資料線141和4素電極17，公共電壓產生器=31 線101連接到公共電極18 ^ 喂過公共 [0006] 099100465 器13以及多個資料同步信號用來控㈣料驅田驅動 描驅動器13根據掃描同步信號依次提供多個如41 掃描線131 ’從而使與掃描線⑶連接的多個信說到 表單編號A0101 第3頁/共21頁 °"2〇〇1〇2( 201124974 16依次導通。 [0007] 在掃描線131被掃描時，資料驅動器14根據資料同步信號 提供多個灰階電壓到資料線141，灰階電壓通過對應導通 的薄膜電晶體1 6施加到畫素電極17。公共電壓產生器15 產生的5伏直流的公共電壓通過公共線1 01施加到公共電 極18用來驅動液晶面板11。 [0008] 液晶顯示器10採用反轉驅動時，畫素電極17的電壓的極 性需要相對於公共電壓進行週期性反轉，且依照其灰階 的不同而不停的變化。因為公共電壓產生器15產生固定 不變的公共電壓，畫素電極17的最高電壓需要達到公共 電極18電壓的兩倍以上，畫素電極17電壓的提供來自資 料驅動器14，那麼，資料驅動器14所提供的工作電壓範 圍要達到公共電壓的兩倍以上，此種方式無疑使得資料 驅動器14需要高的電壓範圍，製造工藝與電路的複雜度 相對提高，成本也會因此而加高.' 【發明内容】 [0009] 有鑒於此，提供工作電壓範圍小、製造工藝簡單、成本 低的液晶顯不裝置實為必要。 [0010] 一種液晶顯示裝置，其包括多條相互平行的資料線、多 條相互平行且與所述資料線垂直的掃描線、多個呈矩陣 排列的畫素單元和第一公共線，每個所述畫素單元包括 一個薄膜電晶體、一個連接所述薄膜電晶體漏極的畫素 電極和一個與所述畫素電極相對設置的公共電極，奇數 行的奇數列畫素單元的公共電極和偶數行的偶數列晝素 單元的公共電極與所述第一公共線相連，所述液晶顯示 099100465 表單編號 A0101 第 4 頁/共 21 頁 0992001020-0 裝置進一步包括第二公共線，所述第二公共線與奇數行 的偶數列畫素單元的公共電極和偶數行的奇數列晝素單 元的公共電極相連，所述第一公共線上的電壓和第二公 共線上的電壓為幅值相同、週期相同且相位相反的方波 脈衝信號。 一種液晶顯示裝置，其包括多條相互平行的資料線、多 條相互平行且與所述資料線垂直的掃描線、多個呈矩陣 排列的晝素單元和第一公共線，每個所述畫素單元包括 一個薄膜電晶體、一個連接所述薄膜電晶體漏極的晝素 電極和一個與所述畫素電極相對設置的公共電極，所述 液晶顯示裝置進一步包括第二公共線，第一行的奇數列 和偶數列的薄膜電晶體的源極分別連接夾住該列的奇數 列和偶數列的資料線，第一行的奇數列和偶數列的公共 電極分別連接第一公共線和第二公共線，第二行和第三 行的奇數列和偶數列的薄膜電晶體的源極分別連接夾住 該列的偶數列和奇數列的資料線，第二行和第三行的奇 數列和偶數列的公共電極分別連接第二公共線和第一公 共線，第四行和第五行的奇數列和偶數列的薄膜電晶體 的源極分別連接夾住該列的奇數列和偶數列的資料線， 第四行和第五行的奇數列和偶數列的公共電極分別連接 第一公共線和第二公共線，第六行的奇數列和偶數列的 薄膜電晶體的源極分別連接夹住該列的奇數列和偶數列 的資料線，第六行的奇數列和偶數列的公共電極分別連 接第二公共線和第一公共線，所述第一公共線上的電壓 和第二公共線上的電壓為幅值相同、週期相同且相位相 表單編號A0101 第5頁/共21頁 201124974 反的方波脈衝信號。 [⑻ 12] [0013] [0014] [0015] [0016] [0017] 相較於先前技術，本發明實施例一 ' 的液日日顯示襄置由於採 用不斷變化的公共電壓，為 ...^ 〜實見各個灰階的顯示，資 料驅動器所提供的工作㈣範目& ^ L, _ ^ ‘、、、而達到公共電壓的兩 倍’此種方式使得資料驅動器 兩要向的電壓範圍，製 k工藝與電路的複雜度相對降低， 。 - 成本也會因此而降低 【實施方式】 下面將結合_對本發明作進—步詳細說明。 及圖4，本發明第-實施例的液晶顯示裝 欠 板21、時序控制器22、掃描驅動器23、 資料驅動器24、第一公Α雷朦本止 產生器26。 和第二公共電壓 掃描驅動器23和資料驅動 τ艰勒為24用來驅動液晶面板21，時 序控制器22用來控制梃如_▲ 掃知驅動器23和資料；驅動器Μ，第 一公共電壓產生器25和笛_八“办π 第一 a共電壓產生器26用來為液 晶面板21提供公共電壓。 液晶面板21設置有多條平行的掃描線⑽、多條平行且和 掃描線232絕緣垂直4目交的資料線241、第—公共線251 、第二公共線261和多個由資料線240與掃描線232分割 界定且呈矩陣分佈的畫素單元27。 每-個畫素單tg27均包括—個薄膜電晶體271、—個畫素 電極272和一個與畫素電極272相對設置的公共電極273 。畫素電極272、公共電極273和夾在其間的液晶層構成 099100465 表單編號A0101 第 頁/共21頁 0992001020-0 201124974 [0018] [0019] [0020] Ο [0021] Ο [0022] [0023] [0024] 液晶電容。 第-公共線251和第二公共線261與資料線2術目平行並 設置在液晶面板21的—側，且與掃描線232、資料線240 絕緣。 當然，第-公共線251和第二公共線261也可以分別設置 在液晶面板21的兩側。 奇數行的奇數列薄膜電晶體271的柵極連接到夾住該列晝 ，單元27的奇數行的掃据線232、源極連接夾住該列畫素 早兀27的資料線24G的奇剌的資料線241上漏極連接 畫素電極272與畫素電極272相對應的公共電極π3連 接第一公共線25b 奇數灯的偶數列㈣電晶體271的柵極連接到奇數行的掃 描線232、源極連接纽該列畫素單邊的偶數列的資料 線241上、漏極連接晝素電極⑺，與畫素電極m相對 應的公共電極273連接第二公共線261。 偶數行的奇數列薄膜電晶體271的柵極連接偶數行的掃描 線232、源極連接夾住該列畫素單元27的偶數列的資料線 241上、漏極連接畫素電極m，而公共電極川連接第 二公共線261。 偶數行的偶數列薄膜電晶體271的柵極連接偶數行的掃描 線232、雜連接夾住該列畫素單元27的奇數列資料線 241上、公共電極273連接第一公共線251。 換言之’同-列的畫素單切的薄膜電晶體271的源極單 099100465 表單編號A0101 第7頁/共21頁 0992001020-0 201124974 個交替連接夾住該列的奇數列和偶數列的資料線24i。 闺任意m單元27的薄膜電晶體271的位置都和相鄰列 畫素單元27的薄膜電晶體271的位置相同。 剛第-公共電壓產生H25產生的公共電壓記為丨第二 公共電壓產生器26產生的公共電壓記作Vc〇m2，二者為電 壓幅值相同、週期相同、相位相反的方波脈衝信號，其 電壓幅值為5-1〇伏（V)。 闕帛-公共《產生器25產_公共雙VeQml通過第一公 共線251連接奇數行_數_偶赚_㈣晝素單元 27的公共電極273，第二公共電壓產生器26產生的公共電 壓Vc〇m2通過第二公共線261連接到奇數行的偶數列和偶 數行的奇數列畫素單元27的公共電極273上，從而使所有 畫素單元27的薄膜電晶體271上具有相同的液晶最大爽壓 〇 闺b夺序控制器22產生多個掃描同步信號用來控制掃描驅動 器23以及多個資科同步信號·來痒制資料驅動器μ。 [0029] 掃描驅動器23根據掃描同步信號依次提供掃插作號到掃 描線232，掃描線232所連接的薄膜電晶體271依次導通 。在掃描線232被掃描時，資料驅動器24根據資料同步俨 號提供多個灰階電壓到多條資料線241，灰階電壓通過對 應導通的薄膜電晶體271分別施加到畫素電極2了2201124974 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a liquid crystal display device. [Prior Art] Since liquid crystal displays have low light-emitting points, they are becoming more and more widely used, and innovations are becoming more and more diverse. Lightweight, short, and low power consumption, and with the maturity of related technologies [0003] ❹ [0004] Please refer to FIG. 1, prior art, CMOS display 10 includes liquid crystal, timing control (four) 12, scan drive _3, data driver 14 and 八 voltage generator 15. Scan driver 13 and data drive _ = LCD surface sing, timing (four) plus smashing (four) device moving (10), public «production", 15 wire for minus = common voltage. 饫 液晶 for LCD panel 11 shirt strip parallel The scanning line 131, the plurality of flat lines intersecting the data line 14丨 vertically, the stripe un-film transistor 16, the plurality of halogen electrodes 17 and the common electrode 18 opposite to the pixel electrode 17. _ Thin film (4) gate, source and secret, data line 141 and 4 element electrode 17, common voltage generator = 31 line 101 connected to the common electrode 18 ^ fed public [0006] 099100465 device 13 and multiple The data synchronizing signal is used to control (4) the material drive drive driver 13 sequentially supplies a plurality of, for example, 41 scan lines 131' according to the scan sync signal so that the plurality of letters connected to the scan line (3) are said to be in the form number A0101. Page °"2〇〇1〇2 (201124974 16 sequentially turned on. [0007] When the scan line 131 is scanned, the data driver 14 supplies a plurality of gray scale voltages to the data line 141 according to the data synchronization signal, and the gray scale voltage passes through Conductive thin film transistor 16 is applied to the pixel The common voltage of 5 VDC generated by the common voltage generator 15 is applied to the common electrode 18 through the common line 101 for driving the liquid crystal panel 11. [0008] When the liquid crystal display 10 is driven by inversion, the pixel electrode 17 is used. The polarity of the voltage needs to be periodically inverted with respect to the common voltage, and varies continuously according to the gray scale thereof. Since the common voltage generator 15 generates a constant common voltage, the highest voltage of the pixel electrode 17 needs to be reached. More than twice the voltage of the common electrode 18, the voltage of the pixel electrode 17 is supplied from the data driver 14, then the data driver 14 provides a working voltage range of more than twice the common voltage, which undoubtedly requires the data driver 14 to The high voltage range, the complexity of the manufacturing process and the circuit are relatively increased, and the cost is increased accordingly. [Invention] [0009] In view of this, a liquid crystal display having a small operating voltage range, a simple manufacturing process, and a low cost is provided. No device is necessary. [0010] A liquid crystal display device comprising a plurality of mutually parallel data lines, a plurality of mutually parallel And a scan line perpendicular to the data line, a plurality of pixel units arranged in a matrix, and a first common line, each of the pixel units including a thin film transistor and a picture connecting the drain of the thin film transistor a common electrode and a common electrode disposed opposite to the pixel electrode, a common electrode of an odd-numbered column of pixels of an odd-numbered row and a common electrode of an even-numbered cell of an even-numbered row are connected to the first common line, Liquid crystal display 099100465 Form No. A0101 Page 4 of 21 0992001020-0 The apparatus further includes a second common line, the common common electrode of the even-numbered pixel units of the second common line and the odd-numbered rows, and the odd-numbered elements of the even-numbered rows The common electrodes of the cells are connected, and the voltages on the first common line and the voltages on the second common line are square wave pulse signals having the same amplitude, the same period, and opposite phases. A liquid crystal display device comprising a plurality of mutually parallel data lines, a plurality of scanning lines parallel to each other and perpendicular to the data lines, a plurality of matrix units arranged in a matrix, and a first common line, each of the paintings The pixel unit includes a thin film transistor, a halogen electrode connected to the drain of the thin film transistor, and a common electrode disposed opposite to the pixel electrode, the liquid crystal display device further including a second common line, the first line The source of the odd-numbered column and the even-numbered thin film transistor are respectively connected to the data lines of the odd-numbered columns and the even-numbered columns of the column, and the common electrodes of the odd-numbered columns and the even-numbered columns of the first row are respectively connected to the first common line and the second The common line, the sources of the odd-numbered columns and the even-numbered columns of the thin-film transistors of the second row and the third row are respectively connected to the data lines of the even-numbered columns and the odd-numbered columns of the column, and the odd-numbered columns of the second and third rows are respectively The common electrodes of the even columns are respectively connected to the second common line and the first common line, and the sources of the odd and even rows of the thin film transistors of the fourth and fifth rows are respectively connected to the odd columns and the even columns of the column. The data lines of the sequence, the common electrodes of the odd and even columns of the fourth and fifth rows are respectively connected to the first common line and the second common line, and the sources of the odd-numbered columns and the even-numbered columns of the thin film transistors of the sixth row are respectively connected Holding the data lines of the odd-numbered columns and the even-numbered columns of the column, the common electrodes of the odd-numbered columns and the even-numbered columns of the sixth row are respectively connected to the second common line and the first common line, and the voltage on the first common line and the second common The voltage on the line is the square wave pulse signal with the same amplitude, the same period and the phase phase form number A0101 page 5 / 21 pages 201124974. [0012] [0017] [0017] [0017] Compared to the prior art, the liquid day display device of the first embodiment of the present invention uses a constantly changing common voltage for... ^ ~ See the display of each gray scale, the data driver provides the work (4) the scope & ^ L, _ ^ ',, and reach twice the common voltage 'this way makes the data driver two to the voltage range The complexity of the process and circuit is relatively low. - The cost will also be reduced as a result. [Embodiment] The present invention will be described in detail below with reference to the present invention. 4, a liquid crystal display under-draft 21, a timing controller 22, a scan driver 23, a data driver 24, and a first male thunderbolt generator 26 of the first embodiment of the present invention. And the second common voltage scan driver 23 and the data drive τ are used to drive the liquid crystal panel 21, and the timing controller 22 is used to control, for example, the _▲ scan driver 23 and the data; the driver Μ, the first common voltage generator 25 and flute_8" π The first a common voltage generator 26 is used to supply a common voltage to the liquid crystal panel 21. The liquid crystal panel 21 is provided with a plurality of parallel scanning lines (10), a plurality of parallel lines and an insulating line perpendicular to the scanning line 232. The target data line 241, the first public line 251, the second common line 261, and a plurality of pixel units 27 defined by the data line 240 and the scan line 232 are arranged in a matrix. Each pixel unit tg27 includes a thin film transistor 271, a single pixel electrode 272, and a common electrode 273 disposed opposite to the pixel electrode 272. The pixel electrode 272, the common electrode 273, and the liquid crystal layer sandwiched therebetween constitute 099100465 Form No. A0101 Page / 21 pages 0992001020-0 201124974 [0020] [0020] 002 [0022] [0024] [0024] Liquid crystal capacitors. The first common line 251 and the second common line 261 and the data line 2 Parallel and disposed on the side of the liquid crystal panel 21 And insulated from the scan line 232 and the data line 240. Of course, the first common line 251 and the second common line 261 may also be respectively disposed on both sides of the liquid crystal panel 21. The gates of the odd-numbered column thin film transistors 271 of odd rows are connected to The column line 232 of the odd-numbered row of the unit 27 is connected to the source line 241 of the data line 24G of the column line 27 of the column pixel 27, and the drain-connected pixel electrode 272 and the pixel are connected to the drain. The common electrode π3 corresponding to the electrode 272 is connected to the first common line 25b. The even column of the odd lamp. (4) The gate of the transistor 271 is connected to the scan line 232 of the odd row, and the data of the even column of the single side of the source pixel. On the line 241, the drain electrode is connected to the halogen electrode (7), and the common electrode 273 corresponding to the pixel electrode m is connected to the second common line 261. The gate of the odd-numbered thin film transistor 271 of the even-numbered rows is connected to the scan line 232 of the even-numbered rows, The source is connected to the data line 241 of the even-numbered column of the column of pixel units 27, the drain is connected to the pixel electrode m, and the common electrode is connected to the second common line 261. The even-numbered column of the even-numbered thin film transistor 271 The scan line 232 connecting the even rows to the pole, The miscellaneous connection clamps the odd column data line 241 of the column pixel unit 27, and the common electrode 273 is connected to the first common line 251. In other words, the same-column pixel single-cut thin film transistor 271 source single 099100465 form number A0101 Page 7 of 21 0992001020-0 201124974 The data lines 24i of the odd and even columns of the column are alternately connected. The position of the thin film transistor 271 of the arbitrary m unit 27 is the same as the position of the thin film transistor 271 of the adjacent column pixel unit 27. The common voltage generated by the first-common voltage generating H25 is recorded as the common voltage generated by the second common voltage generator 26, which is recorded as Vc 〇 m2, which are square wave pulse signals having the same voltage amplitude, the same period, and opposite phases. Its voltage amplitude is 5-1 volts (V).阙帛-Common "Generator 25 Production_Common Double VeQml is connected to the common electrode 273 of the odd-numbered row_number_even earned_(four) pixel unit 27 through the first common line 251, and the common voltage Vc generated by the second common voltage generator 26 〇m2 is connected to the common electrode 273 of the odd-numbered column elements 27 of the even-numbered rows and the even-numbered rows through the second common line 261, so that the thin film transistors 271 of all the pixel units 27 have the same liquid crystal maximum The compression b-sequence controller 22 generates a plurality of scan synchronization signals for controlling the scan driver 23 and the plurality of asset synchronization signals to itch the data driver μ. The scan driver 23 sequentially supplies the scan number to the scan line 232 according to the scan sync signal, and the thin film transistors 271 connected to the scan line 232 are sequentially turned on. When the scan line 232 is scanned, the data driver 24 supplies a plurality of gray scale voltages to the plurality of data lines 241 according to the data synchronization signal, and the gray scale voltages are respectively applied to the pixel electrodes 2 through the corresponding thin film transistors 271.
[0030] 資料驅動器24所提供的灰階電壓電壓範圍為〇〜by下面 以奇數列的資料線241提供15V的灰階電壓、偶數列的資 料線241提供0V的灰階電壓、vcom^5v、vc〇m2為MV 0992001020-0 099100465 表單編號A0101 第8頁/共21頁 ‘ 201124974 [0031] Ο [0032] Ο [0033] [0034] 為例進行說明。 j第η幀圖像中，由於液晶面板21上的奇數列的奇數行的 缚膜電晶體271與提供15V灰階電壓的奇數列的資料線 241相連，公共電極273與第一公共線251相連，從而使 得畫素電極272的電壓大於與其相對設置的公共電極273 上的電壓，所以為正極性，且液晶最大夾壓為1〇ν ( UV-Vcoml);由於奇數列的偶數行的薄膜電晶體271與 提供0V灰階電壓的偶數列的資料線241相連，公共電極 273與第二公共線261相連’從而使畫素電極272的電壓 小於與其相對設置的公共電極273上的電壓，所以為負極 性’且液晶最大加壓為10V ( Vcom2-0V)。 同理’在相同幀的圖像中，液晶面板21上的偶數列的奇 數行的薄膜電晶體271與提供〇V灰階電壓的偶數列的資料 線242相連，從而使晝素電極272的電壓小於與其相對設 置的公共電極273的電壓，為負極性；偶數列的偶數行的 薄膜電晶體271與提供15V灰階電壓的奇數列的資料線 241相連’從而使晝素電極272的電壓大於與其相對設置 的公共電極273的電壓，為正極性。 综上’由於同一列的相鄰行的薄膜電晶體271的源極分別 連接具有不同驅動電壓的資料線241，並且公共電極273 連接不同的公共電壓’從而使得每個畫素單元27的驅動 電壓與自己相鄰的上下左右四個畫素單元27的驅動電壓 具有不一樣的極性。 當轉換到第n+1幀圖像時，相鄰列的資料線241提供的灰 099100465 表單編號A0101 第9頁/共21頁 0992001020-0 201124974 階電壓發生變化’同時Vcoml和VC〇m2的相位也發生變化 ’同樣使得每個晝素單元27的驅動電壓的極性與上一鳩 圖像相比發生了變化，即正極性變為負極性、負極性變 為正極性，從而實現了點反轉（dot inversi〇n)。 [0035] 由於第-公共電壓產生器25和第二公共電壓產生器财 生電壓的幅值由5V變化至10V ’畫素電極272的電壓最大 只要15V即實現各個灰階的顯示’此種方式使得資料驅動 器24提供的電壓無需達到公共電壓的兩倍，資料驅動器 24的功耗較小，也使得製警擎電__度相對降 低，成本也會因此>_:雨_降低。 [0036] 如圖5所示，本發明第二實旅刺提供的液晶顯示裝置3〇 ’ 其包括呈矩陣分佈的畫素單元37、多條資料線341和多條 與資料線341垂直且絕緣的掃描線331〆畫素單元37位於 資料線341及掃描線331所界定的區域内。第一、共電塵 [0037] 產生器35和第二公共電壓產生器36產生的電壓分別通過 第-公共線351和第二公共線361輸入到公共電極奶。 第-行的奇數列的畫素單元37的薄膜電晶體37ι的源極連 接夾住該列的奇數列的資料線34卜偶數列的畫素單元3了 的薄膜電晶體371的源極連接炎住該列的偶數列的資料線 341 ’第一行的奇數列的公共電極373連接第—公共線 35卜偶數列的公共電極373連接第二公共線抝。、 第二和第 ^查垃点· 單元37的薄媒電晶體371的 !極=住該列的偶數列的資料糊，偶數列的畫素 亭疋37的細電晶體371的連接夾住該列的奇數列的資料 099100465 表單編號A0101 第10頁/共21頁 0992001020-0 [0038] 201124974 線341 ’第二行和第三行的奇數列的晝素單元37的公共電 極373連接第二公共線361、偶數列的畫素單元37的公共 電極373連接第一公共線351。 [0039] ❹ [0040] 第四行和第五行的奇數列的畫素單元37的薄膜電晶體371 的源極連接夾住該列的奇數列的資料線341、偶數列的畫 素單元37的薄膜電晶體371的連接夾住該列的偶數列的資 料線341，第四行和第五行的奇數列的畫素單元37的公共 電極373連接第一公共線351、偶數列的畫素單元37的公 共電極373連接第二公共線361。 Ο 第六行的奇數列的晝素單元37的薄膜電晶難371的源極連 接夾住該列的偶數列的資料線341、偶數列的畫素單元37 的薄膜電晶體371的連接夾住該列的奇.數:列的資料線341 ，第六行的奇數列的晝素單元37的公共電極373連接第二 公共線361、偶數列的晝素單元37的公共電極373連接第 一公共線351，以後的各行依次重複第三、第四、第五、 第六行的連接關係且最後一行的奇數列的晝素單元3? 的薄膜電晶體371韵源極連接夾住該列的偶數列的資料線 341，偶數列的晝素單元37的薄膜電晶體371的連接夾住 該列的奇數列的資料線341，最後一行的奇數列的畫素單 元37的公共電極373連接第二公共線斯、偶數列的畫素 單元37的公共電極373連接第—公共線351。 [0041] 在第ηΊ1貞圖像巾|數列和偶數列的資料線⑷分別提供 極性相反歧階電I，同時VeQml#〇v_2為電壓幅值在 5-1〇伏之間的週期相同、相位相反的方波脈衝信號，此 099100465 時’液晶顯示裝置30可實現1+2的反轉驅動模式，即第— 第11頁/共21頁 表單編號A0101 0992001020-0 201124974 行與第二行之間，以及倒數第二行與最後一行之間為行 反轉，而除了第一行和最後一行其他行的畫素單元37為 每兩行實現行反轉。 [0042] 由於液晶顯示裝置30同樣採用不斷變化的公共電壓，為 了實現各個灰階的顯示，資料驅動器所提供的工作電壓 範圍無需達到公共電壓的兩倍，此種方式使得資料驅動 器不需要高的電壓範圍，製造工藝與電路的複雜度相對 降低，成本也會因此而降低。 [0043] 綜上所述，本發明確已符合發明專利之要件，遂依法提 出專利申請。惟，以上所述者僅為本發明之較佳實施方 式，自不能以此限制本案之申請專利範圍。舉凡熟悉本 案技藝之人士援依本發明之精神所作之等效修飾或變化 ，皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 [0044] 圖1是一種現有技術中液晶顯示器的示意圖。 [0045] 圖2是本發明第一實施液晶顯示裝置的示意圖，其包括第 一公共電壓產生器和第二公共電壓產生器。 [0046] 圖3是本發明第一實施例第一公共電壓產生器和第二公共 電壓產生器產生的電壓波形示意圖。 [0047] 圖4是本發明第一實施例液晶顯示裝置的點反轉驅動示意 圖。 [0048] 圖5是本發明第二實施例液晶顯示裝置的示意圖。 【主要元件符號說明】 099100465 表單編號A0101 第12頁/共21頁 0992001020-0 201124974 [0049] 液晶顯示裝置：20，30 [0050] 液晶面板.21 [0051] 時序控制器：22 [0052] 掃描驅動器：2 3 [0053] 貢料驅動益.2 4 [0054] 第一公共電壓產生器：25，35 [0055] 第二公共電壓產生器：26，36 [0056] 畫素單元：27，37[0030] The gray scale voltage voltage range provided by the data driver 24 is 〇~by, and the data line 241 of the odd-numbered columns provides the gray-scale voltage of 15V, and the data line 241 of the even-numbered column provides the gray-scale voltage of 0V, vcom^5v, Vc〇m2 is MV 0992001020-0 099100465 Form No. A0101 Page 8 of 21 2011 24974 [0031] 003 [0033] [0034] [0034] An example will be described. In the nth frame image, since the odd-numbered rows of the film-attaching transistors 271 on the liquid crystal panel 21 are connected to the data lines 241 of the odd-numbered columns providing the 15V gray-scale voltage, the common electrode 273 is connected to the first common line 251. Therefore, the voltage of the pixel electrode 272 is greater than the voltage on the common electrode 273 disposed opposite thereto, so it is positive polarity, and the maximum clamping pressure of the liquid crystal is 1 〇ν (UV-Vcoml); due to the even-numbered rows of odd-numbered rows of thin film electricity The crystal 271 is connected to the data line 241 of the even-numbered column providing the 0V gray scale voltage, and the common electrode 273 is connected to the second common line 261' such that the voltage of the pixel electrode 272 is smaller than the voltage on the common electrode 273 disposed opposite thereto, so The negative polarity 'and the maximum pressure of the liquid crystal is 10V (Vcom2-0V). Similarly, in the image of the same frame, the odd-numbered rows of the thin film transistors 271 on the liquid crystal panel 21 are connected to the data lines 242 of the even-numbered columns providing the 〇V gray-scale voltage, thereby making the voltage of the halogen electrodes 272 The voltage smaller than the common electrode 273 disposed opposite thereto is a negative polarity; the even-numbered rows of the thin film transistors 271 are connected to the data line 241 of the odd-numbered columns providing the 15V gray scale voltage so that the voltage of the halogen electrode 272 is greater than The voltage of the common electrode 273 which is disposed oppositely is positive. In summary, since the sources of the thin film transistors 271 of the adjacent rows of the same column are respectively connected to the data lines 241 having different driving voltages, and the common electrodes 273 are connected to different common voltages' such that the driving voltage of each pixel unit 27 is made. The driving voltages of the upper, lower, left, and right four pixel units 27 adjacent to themselves have different polarities. When converting to the n+1th frame image, the data line 241 of the adjacent column provides ash 099100465 Form No. A0101 Page 9/Total 21 Page 0992001020-0 201124974 The order voltage changes 'the phase of Vcoml and VC〇m2 simultaneously The change also occurs 'the polarity of the driving voltage of each element unit 27 is changed as compared with the previous image, that is, the positive polarity becomes negative polarity and the negative polarity becomes positive polarity, thereby achieving dot inversion. (dot inversi〇n). [0035] Since the magnitudes of the first common voltage generator 25 and the second common voltage generator's wealth voltage are changed from 5V to 10V, the voltage of the pixel electrode 272 is as large as 15V, that is, the display of each gray scale is realized. The voltage provided by the data driver 24 does not need to reach twice the common voltage, and the power consumption of the data driver 24 is small, so that the __ degree is relatively reduced, and the cost is also reduced by __: rain_lower. [0036] As shown in FIG. 5, the liquid crystal display device provided by the second embodiment of the present invention includes a pixel unit 37 distributed in a matrix, a plurality of data lines 341, and a plurality of lines perpendicular to and insulated from the data lines 341. The scanning line 331 〆 pixel unit 37 is located in the area defined by the data line 341 and the scanning line 331. First, Common Dust [0037] The voltages generated by the generator 35 and the second common voltage generator 36 are input to the common electrode milk through the first common line 351 and the second common line 361, respectively. The source of the thin film transistor 37 i of the pixel unit 37 of the odd-numbered row of the first row is connected to the source line of the thin film transistor 371 of the pixel unit 3 of the odd-numbered column of the odd-numbered column of the column. The common electrode 373 of the odd-numbered column of the even-numbered column of the even-numbered column of the column is connected to the second common line 连接 to the common electrode 373 of the even-numbered column 35. The second and the second checkpoints of the thin dielectric transistor 371 of the cell 37 are the data paste of the even column of the column, and the connection of the fine transistor 371 of the even column of the pixel plate 37 is clamped. The data of the odd column of the column 099100465 Form No. A0101 Page 10 / Total 21 page 0992001020-0 [0038] 201124974 Line 341 'The second electrode and the third row of the odd column of the common electrode 373 of the pixel unit 37 are connected to the second common The common electrode 373 of the pixel unit 361 and the even-numbered pixel unit 37 is connected to the first common line 351. [0040] The source of the thin film transistor 371 of the pixel unit 37 of the odd-numbered columns of the fourth row and the fifth row is connected to the data line 341 of the odd-numbered columns of the column, and the pixel unit 37 of the even-numbered column The connection of the thin film transistor 371 sandwiches the data line 341 of the even-numbered columns of the column, and the common electrode 373 of the pixel unit 37 of the odd-numbered columns of the fourth and fifth rows is connected to the first common line 351 and the even-numbered pixel unit 37. The common electrode 373 is connected to the second common line 361.源 The source of the thin film electrowinning 371 of the odd-numbered cell 37 of the odd-numbered column of the sixth row is connected to the connection of the data line 341 of the even-numbered column of the column and the thin film transistor 371 of the even-numbered pixel unit 37. The odd-number of the column: the data line 341 of the column, the common electrode 373 of the pixel unit 37 of the odd-numbered column of the sixth row is connected to the second common line 361, and the common electrode 373 of the even-numbered column of the pixel unit 37 is connected to the first common Line 351, the subsequent rows repeat the connection relationship of the third, fourth, fifth, and sixth rows in sequence, and the odd-numbered cells of the odd-numbered row of the last row of the thin-film transistors 371 are connected to the even-numbered columns of the column. The data line 341 of the column, the connection of the thin film transistor 371 of the even-numbered column of the pixel unit 37 sandwiches the data line 341 of the odd-numbered column of the column, and the common electrode 373 of the pixel unit 37 of the odd-numbered column of the last row is connected to the second common The common electrode 373 of the pixel unit of the line and even columns is connected to the first common line 351. [0041] The data line (4) of the ηΊ1贞 image towel|number column and the even column provides the polarity opposite phase I, respectively, and VeQml#〇v_2 is the same period and phase of the voltage amplitude between 5-1 〇V. In contrast to the square wave pulse signal, the liquid crystal display device 30 can realize the 1+2 inversion driving mode, that is, the first page 11/total 21 page form number A0101 0992001020-0 201124974 between the line and the second line And the line inversion between the penultimate line and the last line, and the pixel unit 37 except the first line and the other line of the last line implements line inversion for every two lines. [0042] Since the liquid crystal display device 30 also adopts a constantly changing common voltage, in order to realize the display of each gray scale, the data driver provides a working voltage range that does not need to reach twice the common voltage, so that the data driver does not need to be high. The voltage range, the complexity of the manufacturing process and the circuit are relatively reduced, and the cost is also reduced. [0043] In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0044] FIG. 1 is a schematic view of a prior art liquid crystal display. 2 is a schematic diagram of a liquid crystal display device according to a first embodiment of the present invention, which includes a first common voltage generator and a second common voltage generator. 3 is a schematic diagram showing voltage waveforms generated by a first common voltage generator and a second common voltage generator according to the first embodiment of the present invention. 4 is a schematic diagram of dot inversion driving of a liquid crystal display device of a first embodiment of the present invention. 5 is a schematic view of a liquid crystal display device according to a second embodiment of the present invention. [Main component symbol description] 099100465 Form No. A0101 Page 12/Total 21 Page 0992001020-0 201124974 [0049] Liquid crystal display device: 20, 30 [0050] Liquid crystal panel. 21 [0051] Timing controller: 22 [0052] Scanning Driver: 2 3 [0053] Dividend Drive Benefit. 2 4 [0054] First Common Voltage Generator: 25, 35 [0055] Second Common Voltage Generator: 26, 36 [0056] Pixel Element: 27, 37
[0057] 掃描線：232，331 [0058] 資料線：241，341 [0059] 第一公共線：251，351 [0060] 第二公共線：261，361 [0061] 薄膜電晶體：271，371 [0062] 像素電極：272 [0063] 公共電極：273，373 0992001020-0 099100465 表單編號A0101 第13頁/共21頁[0057] Scanning line: 232, 331 [0058] Data line: 241, 341 [0059] First common line: 251, 351 [0060] Second common line: 261, 361 [0061] Thin film transistor: 271, 371 Pixel Electrode: 272 [0063] Common Electrode: 273, 373 0992001020-0 099100465 Form No. A0101 Page 13 of 21