201225036 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明係有關於一種顯示面板之驅動電路，其係由 才曰一種可達到省電效用之顯示面板的驅動電路。 【先前技術】 闕 按’現今科技蓬勃發展，資訊商品種類推陳出新， 滿足了大眾不同的需求。早期顯示器多半為陰極射線管 (Cathode Ray Tube，CRT)顯示器，由於其體積龐大與 0 耗電4A ’而且所產生㈣射線對於長時間使用顯示器 的使用者而言，有危害身體的疑慮，因此，現今市面上 的顯示器漸漸赫由液晶顯示器aiquid Crystal Ms_ play，LCD)取代舊有的CRT顯示器。液晶顯示器具有輕 薄短小、低輻射與耗電量低等優點，也因此成為目前市 場主流。 再者，伴隨著近年來由於面板產製科技的快速躍進 ’已使觸控面板的生產成本大㉟降低，因此觸控面板目 ❹ I已經逐漸被廣泛應用於一般的消費電子產品上，例如 行動電話手機、數位相機、數位音樂播放器（MP3)、個人 數位助理器（PDA)、衛星導航器（Gps)等小型電器，在這 二電子商印上，觸控面板被配置於電器的顯示螢幕上使= 用，以便讓使用者可進行互動式輸入操作，而大幅改善 人與機器之間溝通介面的親善性，並提升輸人操作效; 一般液晶顯示器係利用顯示電極與共同電極 ，但疋液晶分子不 electrode)間不同之電壓差控制液晶分子的 旋轉以輸出不同之灰階（gray scali 099141819 表單編號A0101 第3頁/共18頁 0992072674-0 201225036 能夠一直固定在某一個狀態不變，例如畫面一直維持不 動，不然經過一段時間後即使將液晶分子之驅動電壓消 除，液晶分子會因為特性的改變而無法再因應電場的變 化來轉動以形成不同之灰階，所以每隔一段時間就必須 將電壓恢復原狀，以避免液晶分子之特性產生變化，也 就是說，在驅動液晶面板時，為了避免液晶及化，需要 不斷轉換極性驅動，通常以每秒60次（60Hz)的頻率進行 ，如此不斷轉換極性驅動的行為，造成了液晶面板的耗 電，在行動裝置越來越講求省電的趨勢下，如何使公司 產品更省電是必要的， 然而，一般顯示面板之驅動電路在驅動液晶面板而 轉換液晶極性時，驅動電路會將先前所產生驅動電壓的 電荷洩放至接地端，即將驅動電壓由高準位轉換至低準 位，並在下一次液晶轉換極性時，驅動電路必須再將驅 動電壓由低準位轉換至高準位，如此，驅動電路所產生 之驅動電壓並無將洩放至接地端的電荷回收加以利用， 而增加驅動電路的功率消耗。 因此，如何針對上述問題而提出一種新穎顯示面板 之驅動電路，使在驅動液晶面板轉換極性時，將先前驅 動的電荷回收利用，而不是單純洩放至接地端，進而達 到省電的目的，使可解決上述之問題。 【發明内容】 [0003] 本發明之目的之一，在於提供一種顯示面板之驅動 電路，其藉由一儲能元件在顯示面板之一液晶的極性轉 換時，儲存驅動電壓的電荷，並產生一回收電壓 (recycled voltage)，以供應該回收電壓至該資料動 099141819 表單編號A0101 第4頁/共18頁 0992072674-0 201225036 模組，而達到省電的目的。 本發明之顯示面板之驅動電路包含一資料驅動模組 與一儲能元件。資料驅動模組耦接一電源，並依據至少 一顯示資料而產生至少一驅動電壓，以驅動顯示面板。 Ο [0004]201225036 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to a driving circuit for a display panel which is a driving circuit for a display panel which can achieve power saving effects. [Prior Art] 阙 According to the current development of technology, the variety of information products has been updated to meet the different needs of the public. Most of the early displays were cathode ray tube (CRT) displays. Due to their large size and 0 power consumption of 4A', the resulting (four) rays have serious environmental concerns for users who use the display for a long time. Today's displays on the market are gradually replacing the old CRT monitors with the liquid crystal display aiquid Crystal Ms_play, LCD). Liquid crystal displays have the advantages of being thin and light, low in radiation and low in power consumption, and thus have become the mainstream in the current market. Furthermore, with the rapid leap forward in the production technology of panel production in recent years, the production cost of touch panels has been reduced by 35, so the touch panel has been widely used in general consumer electronic products, such as action. Small mobile phones, digital cameras, digital music players (MP3), personal digital assistants (PDAs), satellite navigators (Gps), etc., on these two electronic printing, the touch panel is configured on the display screen of the electrical appliance. The upper enable = use, so that the user can perform interactive input operations, and greatly improve the goodwill of the communication interface between the human and the machine, and improve the input operation efficiency; the general liquid crystal display uses the display electrode and the common electrode, but The difference in voltage between liquid crystal molecules does not control the rotation of the liquid crystal molecules to output different gray levels (gray scali 099141819 form number A0101 page 3 / total 18 pages 0992072674-0 201225036 can be fixed in a certain state, for example The picture remains untouched, or even after a period of time, even if the driving voltage of the liquid crystal molecules is eliminated, the liquid crystal molecules will be The characteristic changes and can no longer be rotated according to the change of the electric field to form different gray scales, so the voltage must be restored to the original state at intervals to avoid changes in the characteristics of the liquid crystal molecules, that is, when driving the liquid crystal panel, In order to avoid liquid crystalization, it is necessary to continuously convert the polarity drive, usually at a frequency of 60 times per second (60 Hz), so that the polarity-driven behavior is continuously converted, resulting in power consumption of the liquid crystal panel, and more and more power-saving in mobile devices. Under the trend, how to make the company's products more power-saving is necessary. However, when the driving circuit of the general display panel drives the liquid crystal panel to switch the polarity of the liquid crystal, the driving circuit discharges the charge of the previously generated driving voltage to the ground. That is, the driving voltage is switched from the high level to the low level, and in the next liquid crystal switching polarity, the driving circuit must switch the driving voltage from the low level to the high level, so that the driving voltage generated by the driving circuit is not discharged. The charge recovery placed on the ground is utilized to increase the power consumption of the drive circuit. Therefore, how Aiming at the above problems, a novel display panel driving circuit is proposed, which can recover the polarity of the previously driven electric charge when driving the liquid crystal panel, instead of simply discharging to the grounding end, thereby achieving the purpose of power saving, so that the above can be solved. SUMMARY OF THE INVENTION [0003] One of the objects of the present invention is to provide a driving circuit for a display panel, which stores the charge of the driving voltage when the polarity of the liquid crystal of one of the display panels is switched by an energy storage element. And generating a recycled voltage to supply the recovered voltage to the data transmission 099141819 Form No. A0101 Page 4 / 18 pages 0992072674-0 201225036 module, and achieve power saving purposes. The driving circuit of the display panel of the present invention comprises a data driving module and an energy storage component. The data driving module is coupled to a power source and generates at least one driving voltage according to the at least one display data to drive the display panel. Ο [0004]
099141819 儲能元件耦接資料驅動模組與顯示面板之間，並在顯示 面板之一液晶的極性轉換時，儲存驅動電壓，並產生一 回收電壓，以供應回收電壓至資料驅動模組，而作為資 料驅動模組之一輔助電源。如此，本發明藉由儲能元件 在顯示面板之液晶的極性轉換時，儲存驅動電壓的電荷 ，並產生回收電壓，以供應該回收電壓至該資料驅動模 組，而達到省電的目的。 【實施方式】 茲為使貴審查委員對本發明之結構特徵及所達成 之功效有更進一步之瞭解與認識，謹佐以較佳之實施例 及配合詳細之說明，說明如後： 請參閱第一圖，係為本發明之一較佳實施例之資料 驅動模組的方塊圖。如圖所示，資料驅動模組1包含一珈 瑪（Gamma)電路10、一第一驅動單元12、一第二驅動單 元14、一第三驅動單元16與一第四驅動單元18。珈瑪電 路10依據一珈瑪曲線而產生複數輸入訊號，該些輸入訊 號為不同位階之電壓訊號，並珈瑪電路10係傳送該些輸 入訊號至第一驅動單元12、第二驅動單元14、第三驅動 單元16與第四驅動單元18。第一驅動單元12、第二驅動 單元14、第三驅動單元16與第四驅動單元18係分別依據 一資料與該些輸入訊號而產生一驅動訊號，並傳送該些 驅動訊號至一顯示面板20，以驅動顯示面板20。其中， 表單編號A0101 第5頁/共18頁 0992072674-0 201225036 f 一驅動單心、第二驅動單心、第三_單元⑽ 弟四驅動單元18係分別產生驅動訊號而驅動顯示面板⑽ 之每行畫素。 此外，請i翔第二®，係為本發明之顯示面板 ^源極線的寄生RC等效電路。如圖所示，顯示面板中的 每一源極線上的薄膜電晶體（Thin_Flim TransistQp， TFT)之畫素可以等效於一電阻2〇〇串聯於—電容2〇2。此 為熟悉該項技術領域人士所皆知的技術，故在此不再多 加以贊述。 請一併參閱第三圖，係為本發明之―較佳實施例之 資料驅動模組的時序圖。如圏所示，本實施例之時序圖 包含一列畫素導通時序、一每數行充放電時序與一偶數 行充放電時序。當顯示畫面之第一列（Linel)畫素導通時 ，資料驅動模組1則控制第二驅動單元14與第四驅動單元 18對顯示面板2〇之偶數行畫素（S2，S4)充入正電壓，而 對顯示面板20之奇數行晝素(δ1,δ3〇充入負電壓；當顯 示畫面之第二列（Li ne2)畫去導通轉’資料驅動模組1則 控制第二驅動單元14與第四駆動單元丨8對顯示面板2 〇之 偶數行畫素（S2，S4)充入負電壓，而對顯示面板2〇之奇 數行畫素（S1，S3)充入正電壓，其中，在顯示畫面之第一 列畫素導通與第二列畫素導通的中間，資料驅動模組丄i 需要將驅動電壓之準位控制於〇電位β 請一併參閱第四Α圖與第四Β圖，係為本發明之一較 佳實施例之驅動電路之電路圖。如圖所示，本發明之顯 示面板之驅動電路1包含一資料驅動模組丨丨與一儲能元件 並依據至少一顯 3〇。資料驅動模組11係耦接一電源13 099141819 表單編號A0101 第6頁/共18頁 0992072674-0 201225036099141819 The energy storage component is coupled between the data driving module and the display panel, and stores the driving voltage when the polarity of the liquid crystal of the display panel is switched, and generates a recovery voltage to supply the recovered voltage to the data driving module, and One of the data drive modules is an auxiliary power supply. Thus, the present invention stores the charge of the driving voltage by the energy storage element during the polarity switching of the liquid crystal of the display panel, and generates a recovery voltage to supply the recovered voltage to the data driving module to achieve the purpose of power saving. [Embodiment] In order to provide a better understanding and understanding of the structural features and the efficacies of the present invention, the preferred embodiment and the detailed description are as follows: Please refer to the first figure. Is a block diagram of a data driving module according to a preferred embodiment of the present invention. As shown, the data driving module 1 includes a gamma circuit 10, a first driving unit 12, a second driving unit 14, a third driving unit 16, and a fourth driving unit 18. The gamma circuit 10 generates a plurality of input signals according to a gamma curve, the input signals are voltage signals of different levels, and the gamma circuit 10 transmits the input signals to the first driving unit 12 and the second driving unit 14, The third driving unit 16 and the fourth driving unit 18. The first driving unit 12, the second driving unit 14, the third driving unit 16, and the fourth driving unit 18 respectively generate a driving signal according to a data and the input signals, and transmit the driving signals to a display panel 20 To drive the display panel 20. Wherein, the form number A0101, page 5 / 18 pages 0992072674-0 201225036 f one drive single center, the second drive single center, the third_unit (10), the fourth drive unit 18 respectively generates drive signals to drive the display panel (10) Line pixels. In addition, please i Xiang Second®, which is the parasitic RC equivalent circuit of the source panel of the present invention. As shown in the figure, the pixel of the thin film transistor (Thin_Flim Transist Qp, TFT) on each source line in the display panel can be equivalent to a resistor 2〇〇 in series to the capacitor 2〇2. This is a technique well known to those skilled in the art and will not be mentioned here. Please refer to the third figure, which is a timing diagram of the data driving module of the preferred embodiment of the present invention. As shown in the figure, the timing chart of this embodiment includes a column of pixel turn-on timing, a charge and discharge sequence for each row, and an even-charge charge-discharge sequence. When the first column of the display screen is turned on, the data driving module 1 controls the second driving unit 14 and the fourth driving unit 18 to charge the even-numbered pixels (S2, S4) of the display panel 2 Positive voltage, and the odd-numbered lines of the display panel 20 (δ1, δ3〇 are charged with a negative voltage; when the second column of the display picture (Li ne2) is drawn to turn the data drive module 1 to control the second drive unit 14 and the fourth swaying unit 丨8 charge a negative voltage to the even-numbered pixels (S2, S4) of the display panel 2, and charge the odd-numbered pixels (S1, S3) of the display panel 2 with a positive voltage, wherein In the middle of the first column of the display screen and the second column of pixels, the data driving module 丄i needs to control the level of the driving voltage to the zeta potential. Please refer to the fourth and fourth figures. A schematic diagram of a driving circuit of a preferred embodiment of the present invention. As shown, the driving circuit 1 of the display panel of the present invention comprises a data driving module and an energy storage component according to at least one Display data. Module 11 is coupled to a power supply. 13 099141819 Form No. A0 101 Page 6 of 18 0992072674-0 201225036
099141819 不資料（data)而產生至少一驅動電壓，以驅動顯示面板 2〇，其中，電源13係用以提供一供應電壓至資料驅動模 組11，以作為資料驅動模組11之主要電源，再者，資料 驅動模組11包含複數驅動單元，於此實施例中，資料驅 動模組11包含第一驅動單元丨2、第二驅動單元14、第三 驅動單元16與第四驅動單元18。每一驅動單元包含一數 位類比轉換單元12〇與一放大器122。數位類比轉換單元 120係接收顯示資料，並轉換該顯示資料為類比的驅動電 壓，即數位類比轉換單元120係將顯示資料從數位的訊號 轉換為類比的訊號，放大器122係耦接數位類比轉換單元 120，並放大數位類比轉換單元12〇轉換後之驅動電壓， 並將放大後之驅動電壓傳送至顯示面板2〇，如驅動該顯 示面板20。 儲能元件30係耦接資料驅動模組11與顯示面板2〇之 間，並在顯示面板2 〇中的液晶進行極性轉換時，儲能元 件30儲存驅動電壓，並產生一回收電壓（recycied voltage)，而供氣回收電壓至資:料驅動模組丨丨，以作為 資料驅動模組11之辅助電源’即儲能元件可在資料驅 動模組11將驅動電壓之電壓準位控制由高電壓至〇電位時 ，儲存該驅動電壓之電荷，而產生回收電壓，並在資料 驅動模組11需要將驅動電壓之電荷從低準位調整至高準 位時，而提供該回收電壓至資料驅動模組丨丨，使資料驅 動模組11額外再重新產生電壓，使驅動電壓從低準位調 整至高準位，如此，本發明係藉由儲能元件30在顯示面 板20之液晶的極性轉換時，儲存驅動電壓的電荷，並產 生回收電壓而供應至資料驅動模組u，以作為資料驅動 表單編號A0101 第7頁/共18頁 0992072674-0 201225036 模組11之輔助電源，使電源13不需要以全功率輸出供應 電壓至資料驅動模組11，而達到省電的目的。其中，儲 能元件30為一電容。 再者，本發明之驅動電路1更包含一切換模組4 0與一 倍壓電路50。切換模組40具有一第一端、一第二端與一 第三端。第一端耦接資料驅動模組11，第二端耦接儲能 元件30，第三端耦接顯示面板20，於此實施例中，切換 模組40包含一第一切換開關42、一第二切換開關44、一 第三切換開關46與一第四切換開關48。第一切換開關42 、第二切換開關44、第三切換開關46與第四切換開關48 分別具有一第一端、一第二端與一第三端，.第一切換開 關42、第二切換開關44、第三切換開關46與第四切換開 關48之第一端係分別耦接第一驅動單元12、第二驅動單 元14、第三驅動單元16與第四驅動單元18，第一切換開 關42、第二切換開關44、第三切換開關46與第四切換開 關48之第二端皆耦接儲能元件30，第一切換開關42、第 二切換開關44、第三切換開關46與第四切換開關48之第 三端搞接顯示面板。 此外，第一切換開關42與第三切換開關44之第二端 耦接於儲能元件30之一端，而第二切換開關44與第四切 換開關48之第二端耦接於儲能元件30之另一端。如此， 本發明可藉由切換模組4 0切換至資料驅動模組11耦接至 顯示面板20，即第一切換開關42、第二切換開關44、第 三切換開關46與第四切換開關48係將第一端與第三端電 性連接（如第四A圖所示），使資料驅動模組11耦接顯示面 板20，讓資料驅動模組11可傳送驅動電壓至顯示面板20 099141819 表單編號A0101 第8頁/共18頁 0992072674-0 201225036 、動顯示面板2 〇，當切換模組4 〇切換至儲能元件3 〇 叙接顯不面板2G時’儲能元件30係儲存驅動電壓之電荷 ’而產生回收電壓，即在資料驅動模組11將驅動電壓之 電壓準位控制由高電麗至〇電位時，切換模組40之第-切 換開關42、第二切換開關44、第三切換_46與第四切 換開關28係將第二端與第三端電性連接（如第四b圖所示） 使儲此元件3〇能儲存驅動電壓之電荷，而產生回 壓。099141819 generates at least one driving voltage to drive the display panel 2〇, wherein the power supply 13 is used to supply a supply voltage to the data driving module 11 as the main power source of the data driving module 11, and then The data driving module 11 includes a plurality of driving units. In this embodiment, the data driving module 11 includes a first driving unit 丨2, a second driving unit 14, a third driving unit 16, and a fourth driving unit 18. Each drive unit includes a digital analog conversion unit 12A and an amplifier 122. The digital analog conversion unit 120 receives the display data and converts the display data into analog analog driving voltages, that is, the digital analog conversion unit 120 converts the display data from the digital signal to the analog signal, and the amplifier 122 is coupled to the digital analog conversion unit. 120, and amplifying the converted driving voltage of the digital analog converting unit 12, and transmitting the amplified driving voltage to the display panel 2, such as driving the display panel 20. The energy storage component 30 is coupled between the data driving module 11 and the display panel 2, and when the liquid crystal in the display panel 2 is polarity-switched, the energy storage component 30 stores the driving voltage and generates a recovered voltage (recycied voltage). And the gas supply recovery voltage to the material: the drive module 丨丨, as the auxiliary power supply of the data driving module 11, that is, the energy storage component can control the voltage level of the driving voltage in the data driving module 11 by the high voltage When the potential is applied to the potential, the charge of the driving voltage is stored to generate a recovery voltage, and when the data driving module 11 needs to adjust the charge of the driving voltage from a low level to a high level, the recovered voltage is supplied to the data driving module. In other words, the data driving module 11 is additionally re-generated to adjust the driving voltage from the low level to the high level. Thus, the present invention stores the polarity of the liquid crystal of the display panel 20 by the energy storage element 30. Drive the voltage charge and generate the recovered voltage and supply it to the data drive module u as the data drive form number A0101 Page 7 / 18 pages 0992072674-0 201225036 Module 11 The power supply ensures that the power supply 13 does not need to supply the voltage to the data driving module 11 with full power output, thereby achieving the purpose of power saving. The energy storage component 30 is a capacitor. Furthermore, the driving circuit 1 of the present invention further includes a switching module 40 and a voltage doubling circuit 50. The switching module 40 has a first end, a second end and a third end. The first end is coupled to the data driving module 11, the second end is coupled to the energy storage component 30, and the third end is coupled to the display panel 20. In this embodiment, the switching module 40 includes a first switching switch 42 and a first The second switch 44, a third switch 46 and a fourth switch 48 are provided. The first switch 42 , the second switch 44 , the third switch 46 and the fourth switch 48 respectively have a first end, a second end and a third end. The first switch 42 and the second switch The first end of the switch 44, the third switch 46, and the fourth switch 48 are respectively coupled to the first driving unit 12, the second driving unit 14, the third driving unit 16, and the fourth driving unit 18, and the first switching switch The second switch of the second switch 44, the third switch 46, and the fourth switch 48 are coupled to the energy storage component 30, the first switch 42, the second switch 44, and the third switch 46 and The third end of the four switch 48 is connected to the display panel. In addition, the second end of the first changeover switch 42 and the third changeover switch 44 are coupled to one end of the energy storage component 30 , and the second end of the second changeover switch 44 and the fourth changeover switch 48 are coupled to the energy storage component 30 . The other end. Thus, the present invention can be coupled to the display panel 20 by the switching module 40 to the data driving module 11, that is, the first switching switch 42, the second switching switch 44, the third switching switch 46, and the fourth switching switch 48. The first end and the third end are electrically connected (as shown in FIG. 4A), so that the data driving module 11 is coupled to the display panel 20, so that the data driving module 11 can transmit the driving voltage to the display panel 20 099141819. No. A0101 Page 8 of 18 0992072674-0 201225036, moving display panel 2 〇, when the switching module 4 〇 switches to the energy storage component 3 〇 When the panel 2G is not displayed, the energy storage component 30 stores the driving voltage The charging voltage generates a recovery voltage, that is, when the data driving module 11 controls the voltage level of the driving voltage from the high voltage to the zeta potential, the first-switching switch 42, the second switching switch 44, and the third of the switching module 40 The switching _46 and the fourth switching switch 28 electrically connect the second end and the third end (as shown in FIG. 4b) to store the charge of the driving voltage of the component 3 to generate a back pressure.
099141819 本發明之倍壓電路50係耦接儲能元件3〇與資料驅動 模組11之間’以放大該回收電壓，並將放大後之回收電 壓傳送至資·動模組⑴以供應資料堪動模組U所需 的電壓，其中，倍壓電路為一充電系電路⑽arge _p circuit) ° 示上所述，本發明之顯示面板之驅動電路係由一資 料驅動模_接—電源，並依據至少__資料而產生至少 -驅動電壓’以驅動顯示面板，一儲能元秦耦接資料驅 動模組與顯示面板謂，並在顯示面板之—液晶的極性 轉換時，儲存驅動電壓而產生—回收電M(recycied voltage)，而供應該回收電壓至該資料驅動模組，以作 為資料驅動模組之—辅助電源。如此，本發簡由儲能 元=在顯示面板之液晶的極性轉換時，儲存驅動電廢的 電荷並產生回收電壓’以供應該回收電壓至該資料驅 動模組，而達到省電的目的。 本發明係實為一具有新穎性、進步性及可供產業利 用者’應符合我國專利法所規定之專利中請要件無疑， 麦依法提出發科射請，_鈞局早日賜准專利至 表單編號A0101 第9頁/共18頁 ' 0992072674-0 201225036 感為禱。 惟以上所述者，僅為本發明之一較佳實施例而已， 並非用來限定本發明實施之範圍，舉凡依本發明申請專 利範圍所述之形狀、構造、特徵及精神所為之均等變化 與修飾，均應包括於本發明之申請專利範圍内。 【圖式簡單說明】 [0005] 第一圖係為本發明之一較佳實施例之資料驅動模組的方 塊圖， 第二圖係為本發明之顯示面板之源極線的寄生RC等效電 路； 第三圖係為本發明之一較佳實施例之資料驅動模組的時 序圖， 第四A圖係為本發明之一較佳實施例之資料驅動模組之電 路圖，及 第四B圖係為本發明之另一較佳實施例之資料驅動模組之 電路圖。 【主要元件符號說明】 [0006] 本發明： I 資料驅動核組 10 珈瑪電路 II 資料驅動模組 12 第一驅動單元 120 數位類比轉換單元 122 放大器 13 電源 099141819 表單編號A0101 第10頁/共18頁 0992072674-0 201225036 14 第二驅動單元 16 第三驅動單元 18 第四驅動單元 20 顯示面板 200 電阻 202 電容 30 儲能元件 40 切換模組 42 第一切換開關 44 第二切換開關 46 第三切換開關 48 第四切換開關 50 倍壓電路 Ο 099141819 表單編號Α0101 第11頁/共18頁 0992072674-0099141819 The voltage multiplying circuit 50 of the present invention is coupled between the energy storage device 3 and the data driving module 11 to amplify the recovered voltage, and transmits the amplified recovered voltage to the resource module (1) to supply data. The voltage required for the module U, wherein the voltage multiplying circuit is a charging system circuit (10) arge_p circuit). As shown, the driving circuit of the display panel of the present invention is driven by a data driving mode. And generating at least a driving voltage according to at least the __ data to drive the display panel, and an energy storage element is coupled to the data driving module and the display panel, and storing the driving voltage when the polarity of the liquid crystal is switched on the display panel. A recycied voltage is generated, and the recovered voltage is supplied to the data driving module to serve as an auxiliary power source for the data driving module. In this way, the present invention is based on the energy storage element = when the polarity of the liquid crystal of the display panel is switched, the charge that drives the electric waste is stored and the recovery voltage is generated to supply the recovered voltage to the data driving module, thereby achieving the purpose of power saving. The invention is a novelty, progressive and available for the industrial users. 'The requirements of the patents stipulated by the Chinese Patent Law are undoubtedly met. The law proposes to send a patent to the law, and the _ bureau will grant the patent to the form as soon as possible. No. A0101 Page 9 of 18 '9929.2674-0 201225036 Feelings of prayer. However, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and the shapes, structures, features, and spirits described in the claims are equally variable. Modifications are intended to be included in the scope of the patent application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS [0005] The first figure is a block diagram of a data driving module according to a preferred embodiment of the present invention, and the second figure is a parasitic RC equivalent of a source line of the display panel of the present invention. The third diagram is a timing diagram of a data driving module according to a preferred embodiment of the present invention, and the fourth diagram is a circuit diagram of a data driving module according to a preferred embodiment of the present invention, and a fourth B The figure is a circuit diagram of a data driving module according to another preferred embodiment of the present invention. [Main component symbol description] [0006] The present invention: I data driving core group 10 Karma circuit II data driving module 12 first driving unit 120 digital analog conversion unit 122 amplifier 13 power 099141819 form number A0101 page 10 / 18 Page 0992072674-0 201225036 14 Second drive unit 16 Third drive unit 18 Fourth drive unit 20 Display panel 200 Resistance 202 Capacitor 30 Energy storage element 40 Switching module 42 First changeover switch 44 Second changeover switch 46 Third changeover switch 48 4th switch 50 voltage doubler circuit Ο 099141819 Form No. 1010101 Page 11 of 18 0992072674-0