201039223 六、發明說明： 【發明所屬之技術領域】 本發明是有關於-種省電裝置及其方法，且 種適用於電容式觸控榮幕的省電褒置及其方法。 【先前技術】 、紙端Ϊ、控用非!廣泛’例如自動植員機、銷售點 耐用，因此市場還在成長之中。 人 〇 及電= :控ί幕可分為兩種：電阻式觸控螢幕以 輕按就i產：雷壓。ΪΪί觸控螢幕’用手指或其他觸頭201039223 VI. Description of the Invention: [Technical Field] The present invention relates to a power saving device and a method thereof, and a power saving device and a method thereof suitable for a capacitive touch screen. [Prior Art], paper end, control, non-wide, such as automatic implanters, and durable sales points, so the market is still growing. People 〇 and electricity = : Control ί screen can be divided into two types: resistive touch screen to lightly press on the production: lightning pressure. ΪΪίTouch screen' with fingers or other contacts
==筆記型電腦的觸控板)。而且，電UK ίΪΐί優疋感應敏銳，可以忠實的反應使用者的 傳統，電容式觸控螢幕包括矩降式配置的多條 及連接該些掃描線的f路。 ίίΐίί容的變化量，藉以確定手指或導體碰觸ΐίΐ 〇 ϊΐίίίΓ，所以必須消耗-定的電力。因：3 I效率地為電容式觸控螢幕節省電力，便成為—個重要^ 【發明内容】 置實ίϊί此’提供一種適用於電容式觸控螢幕的省電裝 法亦ίίϊ此，提供—種劾於f容搞控螢幕的省電方 杵罄ί照ίί::實施例，一種省電裝置適用於電容式觸 括觸控偵測模組、_模組與省電掃描減。觸 3==Notepad of the notebook). Moreover, the electric UK Ϊΐ 疋 疋 疋 疋 , , , , , , , , , 疋 疋 疋 疋 疋 疋 疋 疋 疋 UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK UK Ίίΐί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί Because: 3 I efficiently saves power for the capacitive touch screen, it becomes an important ^ [Summary] ίϊί This provides a power-saving method for capacitive touch screens. A power saving device for controlling the screen is used in the embodiment of the present invention. A power saving device is suitable for a capacitive touch sensing module, a module, and a power saving scan. Touch 3
ZUlUJbfZZJ • 組用以週期性地為多饮/ ' 觸控螢幕是否為總條掃插線進行掃斤 •㈣組用^°當電容式觸測電容式 掃插該“，？偵_組。如Ξ ίΐΐ觸控時，開 並題自該些掃組被_以後， 掃掏绩问步知插該組掃描缓，至少一組掃描線， =:來=電容式觸ί螢幕其以 ο ^光開關模ί用ϊί;α，式觸以包_ 之以關閉背光觸控時，背光 先源不發光以達到省電 觸趣本發明另-實施例，—種4、《· 包括㈡步：電容式觸控爱幕包括多 式觸4)幕1^也觸為控多條掃描線進行掃插，據以摘測電容 Γ (2)當電容式觸控螢幕夫為 );以及 又觸控時，停止執行步驟 Ο 擇至i3)在停止執行步驟（ι)以後，白斗 一組掃描線，並週期性 ^自该些掃描線中選 是=:2描的該組掃描線足以用來勞ί =由％控螢幕未*觸 發L备知描次數愈少，則充放電次數減:’以降低知描 發明具有為電容式觸控螢幕省電之g減少，因此應用本 【實施方式】 圖式ΚΐίΞϊϋ述^加ίΐ與完傷’可參照所附之 乂下所述各，圖式中相同之號碼代表相同 4 201039223 ， 或相似之元件。另一方面，眾所週知的元件與步驟並未描 ' 述於實施例中，以避免對本發明造成不必要的限制。 - 本發明之技術態樣是一種省電裝置，其可應用在電容 式觸控螢幕，或是廣泛地運用在相關之技術環節。以下將 搭配第1圖來說明省電裝置之具體實施方式。 請參照第1圖，第1圖是依照本發明一實施例的一種 省電裝置100的方塊圖。省電裝置100適用於電容式觸控 螢幕（未標示），此電容式觸控螢幕包括多條掃描線，例如 掃描線 11、12、13、14、15、21、22、23、24、25 ° 在第 1 圖中，該些掃描線 11、12、13、14、15、21、22、23、 〇 24、25可分為第一描線11、12、13、14、15與第二掃描 線 21、22、23、24、25，其中第一掃描線 11、12、13、14、 15與第二掃描線21、22、23、24、25垂直絕緣相交。應 瞭解到，雖然第1圖之第一掃描線僅為5條；且第二掃描 線亦僅為5條，但此並不限制本發明。實務上，熟習此項 技藝者應視當時需要，彈性選擇第一掃描線與第二掃描線 的數目。 在第1圖中，省電裝置100包括觸控偵測模組110、 開關模組120與省電掃描模組130。觸控偵測模組110用 以週期性地掃描掃描線11、12、13、14、15、21、22、23、 〇 24、25，據以偵測電容式觸控螢幕是否受觸控。當電容式 觸控螢幕未受觸控時，開關模組120用以關閉觸控偵測模 組110。如此，觸控偵測模組110停止掃描該些掃描線11、 12、13、14、15、21、22、23、24、25 ° 另一方面，在觸控偵測模組110被關閉以後，省電掃 描模組130用以自掃描線11、12、13、14、15、21、22、 23、24、25中選擇至少一組掃描線，並週期性地同步掃描 該組掃描線’其中被同步掃描的該組掃描線足以用來感測 電容式觸控螢幕是否遭觸碰。 舉例來說，省電掃描模組130選擇全部的掃描線11、 5 201039223 12、13、、-15、2! 掃描該些掃描線U 22 23、24、25 ’並週期性地同步 t掃描線21、22、Um; 130選擇全部的第 掃描線21、22、23、24 週』性地同步掃描第二 掃插線U、12、13、14、’ △選J電掃描模組130於 ο 線捲f週期性地同步掃描該組第少-組第-掃描 一拎描線11、13、15或 線，例如奇數條第 f電掃插模組130於第二掃描H線12、14 ;或者， 擇至少-組第二播Μ Z綠 22、23、24、25中選 描線，例如奇數條第田：掃=性地同步掃描該組第二掃 描線22、24。實mm1 j、Μ或偶數條第二掃 =者在電容式觸控螢幕的觸碰2被：的掃描線足以讓使 藝者應視當時需要彈性選擇用於則可’熟習此項技 當電容式觸控螢幕可供使掃描的掃描線。 模組110用以週期性地逐一 |觸控操作時，觸控偵測 〇 15、21、22、23、24、25，知描線 11、U、13、14、 快反應速度，並且可據以偵測較佳的操控解析度及較 用者觸控。使用者對電容式觸各式觸控螢幕是否受到使 分.點觸、等待觸碰及閒置，t面板的動作可分為三個部 螢幕沒有受到使用者觸控的時^中閒置時間為電容式觸控 皆為電容式觸控榮幕受到使用^;而點觸和等待觸碰時間 待觸碰時間，觸控僧測模电^，觸控的時期。在點觸和等 描線η、12、13、14 ί 2lU〇用以週期性地逐一掃描掃 觸控偵測模組110用以設定電办22、23、24、25。實務上， 待觸碰時間，經等待時間後仍=式觸控螢幕被點觸後的等 幕沒有受到使用者觸控，則恭、；；點觸’亦即電容式觸控螢 態，並可同時進入省電模式式觸控螢幕處於閒置狀 ’、言之，開闕模組120用以 6 201039223 : 停止觸控偵測模組110的動作， 3性地同步掃描上述掃描線；由二電，模組130週 - 若4觸至少一組掃插線。 、21、22、 時，此偵測結果意用t亚無進行觸控操作 ;J ’此時僅需要偵測使所操作的精確 可。因此’開關模組120用以亚電容式觸控 描線11、12、13、14 /15、、13G週期性地同步掃播上述掃 ο 組掃描線。舉例來玲，少、22、23、24、25中至少_ 步掃描第-掃插線5U、12'、^描模組13〇用以週期性地同 描模組130用以輪出同一、14、15 ;換言之，省電掃 11、U、13、14、15 ^:訊號給所有的第—掃描線 則充放電次數減少，，知描次數。掃描次數愈少， 另一方而,精以建到省電目的。 週期内，逐-掃描U〇每次可於-段第一掃描 〇 ，週期内，同步掃描上田述用以每次可於-段第二掃 22、23、24、25 中至少一鈿：線 11、12、13、14、15、21、 描週期可約等同第二 描線一次。至於上述第一掃 本發明，實務上，第一功，然此僅為例示，並不限制 期，熟習此項技蓺者庫期可大於或小於第二掃描週 ^請繼續參照第要彈性調整之。 富電容式觸控螢幕遭 1電裝置100包括切換模組14〇。 偵測模組110，並關 :，切換模組140用以啟動觸控 實務上，若省電掃描模組120。 電容式觸控螢幕時，此=枳組130偵測到使用者再度觸碰 者所操作的精確位置，' j、、、σ果思味著可能須要偵測使用 描模組130的動作，士 蛉切換模組140用以停止省電掃 描第一掃描線11、12、1、成觸控偵測模組11〇週期性地掃 、3、w、15與第二掃描線21、22、 7 201039223 在本ί施控解析度及較快反應速度。 120、省電掃描模組130盘貞測模組110、開關模組 觸控螢幕的驅動電路中= 用以整合於電容式 中驅動電路可用於處理觸押 =為驅動電路省電，其 為内部可判讀及控制之訊息將外部輸入訊號轉換 開關模組120、省電掃描上’觸控债測模組110、 實施方式可為軟體程式或硬 一，換模組I40的具體 視當時需要彈性選擇其實扩 。熟習此項技藝者應當 Ο Ο 全為硬體電路，得部分為教f二，不需全為軟體程式或 請繼續參照第i圖，應為硬體電T 螢幕還包括背光源030、背置1〇〇的電容式觸控 組160。當電容式觸控螢幕未歼U =0與背光啟動模 用以關閉背光源030。如此，m時，背光開關模組150 式觸控螢幕遭觸碰時，背光啟動==不發光二J電容 030。如此，背光源〇3〇用以發光。〇用以啟動背光源 實務上，若觸控偵測模組u〇 觸控操作時m開關模组ΐ5〇ϊΜ^用者並無進行 達到省電目的。另一方面，若省雷播f光源030，藉以 用者再度觸碰電容式觸控螢幕時 ；2組130偵測到使 動背光源030,藉以提供充足的光線。先啟動模組160啟 在本實施例中，上述之背光開關指 模組160亦可整合於電容式觸控榮幕的f 15〇與背光啟動 地，背光開關模組150嫩：==二同樣 式可為軟體程式或硬體電路。熟f此項2 實施方 需要彈性選擇其實施方式，而不藝者應當視當時 體電路，得部分為軟體程式或部分為呈式或全為硬 以 本發明之另一技術態樣是一種省電 電容式觸控螢幕，或是廣泛地運用&彳，，/、P…用在 下將搭配第2圖至第赠說明心/體術二式▲ 8 201039223 :種省ί 二f 2圖是依照本發明另—實施例的一 包括以下步驟210 —25〇。廡#經糾電方法200 的步驟，除特別敘明其順施例中所提及 驟的硬體裝置，由於於=該些步 複贅述之。 貝犯妁巳，、體揭路，因此不再重 ο 於步驟210中，週期性地掃描 =ί 一螢 ==度’並且可據以偵測電容 測結用觸受觸控時，此偵 〇 可。因此’於步驟220採用省電模式觸控鸯幕即 為上述多條掃描線進行逐一、即停止週期性地 擇至少一組掃描線，並週期“同線中選 是否遭觸碰。換言之’於步驟220 ΐ感=式；控螢幕 組掃描線，以降低掃描次數輸 則充放電次數減少，藉以達到省電 ㈣-人數愈少’ 舉例來說，於步驟220中，選摆 ，苗線’並週期性地同步掃觸=幕全部 該些第-掃描線；或者，於步：f2〇 f週期性地同步掃描 掃描線’並週期性地同步掃描該些第:婦2Π^ 9 201039223 步驟220中，於第—掃十 並週期性地同步掃描該第至少一組第一掃描線， - 描線或偶數條第一掃描線； 田線，例如奇數條第一掃 掃描線中選擇至少-組第 ^於步驟220巾，於第二 該組第二掃描線，例如奇數條J線丄並週期性地同步掃描 描線。實務上，只要所同步掃二，插線或偶數條第二掃 電容式觸控螢幕的觸碰能被感測則帚插，足以讓使用者在 視當時需要彈性選擇用於於+ '可，熟習此項技藝者應 線。 ' 驟220所同步掃插的掃描 ο 若步驟220中，偵測到使用 幕時，此偵測結果意味著使用者，度觸碰電容式觸控螢 幕。因此，可停止執行步驟2 ° =會使用電容式觸控螢 測電容式觸控螢幕是否受觸控。並回到步驟210繼續偵 至於步驟230用以在電容式雜 閉背J源方如此’背光源不發光，藉=受匕控：’關 另一方面，若於步驟210中伯測目的。 觸控時，此偵測結果意味著可能須要初:式，控螢幕受 精確位置。因此，於步驟240採^ 操作的 〇 線進行掃描’據以_電2:=2 控的位置。更具體而·^，於步驟 拳又觸 ，的掃描線’以達到較佳的操控解析茲 背央，η容式觸控榮幕遭觸碰時’啟動 者先源。如此，为光源可發光，藉以提供充足的光線。 為了對步驟220與步驟240作進一步的比較分折，& ^照第3圖’第3圖是第2圖之步驟咖與步驟的g 序圖、。如圖所示，於步驟24〇操作在一般模式時，可週 欧地逐—知描多條掃描線S1，S2，S3…Sn，以達到較佳的才二 控解析度及較快反應速度。在掃描過程中，施予掃描線= 掃描訊號的脈波寬度為lt。舉例來說，於步驟24〇的掃描 201039223 頻率可在數百kHz至數MHz之間。相較之下，於步驟220 操作在省電模式時，由於僅需偵測電容式觸控螢幕是否遭 觸碰即可，因此可週期性地同步掃描多條掃描線 S1，S2，S3…Sn，以達到省電的目的。或者，若該些掃描線 Sl，S2，S3〜Sn可分為第一掃描線與第二掃描線，其中第一 掃描與第二掃描線垂直絕緣相交，則步驟220用以週期性 地同步掃描第一掃描線或第二掃描線，以達到省電的目的。 於第3圖中，步驟220的掃描週期T2約等同步驟240 的掃描週期T1，然此僅為例示，並不限制本發明，實務上， 步驟220的掃描週期T2可大於或小於步驟240的掃描週期 〇 T1，熟習此項技藝者應視當時需要彈性調整之。 由上述本發明實施例可知，當電容式觸控螢幕未受觸 控時，可同步對部分特定之掃描線進行掃描，以降低掃描 次數。當掃描次數愈少，則充放電次數減少，因此應用本 發明具有為電容式觸控螢幕省電之優點。 雖然本發明已以實施例揭露如上，然其並非用以限定 本發明，任何熟習此技藝者，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 應視後附之申請專利範圍所界定者為準。 ® 【圖式簡單說明】 第1圖是依照本發明一實施例的一種省電裝置的方塊 圖。 第2圖是依照本發明另一實施例的一種省電方法的流 程圖。 第3圖是第2圖之步驟220與步驟240的時序圖。 【主要元件符號說明】 11、12、13、14、15 :第一掃描線 21、22、23、24、25 :第二掃描線 π 201039223 • 030:背光源 * 100 :省電裝置 - 110:觸控偵測模組 120 :開關模組 130 :省電掃描模組 140 :切換模組 150 :背光開關模組 160 :背光啟動模組 200 :省電方法 210、220、230、240、250 :步驟 〇 Sl，S2，S3"，Sn :掃描線ZUlUJbfZZJ • The group is used to periodically sweep the multi-drinking / 'touch screen for the total strip sweeping line. ・(4) Use ^° when capacitive touch-sensitive capacitive sweeping of the ",? _ group. Ξ ΐΐ ΐΐ ΐΐ ΐΐ , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , When the switch mode is used to turn off the backlight touch, the backlight is not illuminated to achieve power saving. Another embodiment of the present invention, - 4, "· includes (2) steps: capacitance The touch-sensitive love screen includes a multi-touch 4) screen 1^ also touches a plurality of scan lines for sweeping, according to the measurement of the capacitance Γ (2) when the capacitive touch screen is); , Stop the execution step Ο to i3) After stopping the execution of the step (1), a group of scan lines are white, and periodically select from the scan lines: the scan line of the group is sufficient for labor ί = The number of times the L-ready is not triggered by the % control screen is less, the number of charge and discharge times is reduced: 'To reduce the knowledge, the invention has a g reduction for the capacitive touch screen, so Application [Embodiment] The drawings Κΐ Ξϊϋ Ξϊϋ ^ 加 加 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完 完The elements and steps are not described in the embodiments to avoid unnecessarily limiting the present invention. - The technical aspect of the present invention is a power saving device that can be applied to a capacitive touch screen, or widely It is used in the related technical aspects. A specific embodiment of the power saving device will be described below with reference to Fig. 1. Referring to Fig. 1, Fig. 1 is a block diagram of a power saving device 100 according to an embodiment of the present invention. The electrical device 100 is suitable for a capacitive touch screen (not shown). The capacitive touch screen includes a plurality of scan lines, such as scan lines 11, 12, 13, 14, 15, 21, 22, 23, 24, 25 ° In FIG. 1, the scan lines 11, 12, 13, 14, 15, 21, 22, 23, 24, 25 can be divided into first traces 11, 12, 13, 14, 15 and second scan lines. 21, 22, 23, 24, 25, wherein the first scan lines 11, 12, 13 14, 15 and the second scan line 21, 22, 23, 24, 25 are vertically insulated and intersected. It should be understood that although the first scan line of Fig. 1 is only 5; and the second scan line is only 5, However, this does not limit the present invention. In practice, the skilled person should flexibly select the number of the first scan line and the second scan line as needed. In the first figure, the power saving device 100 includes touch detection. The module 110, the switch module 120 and the power-saving scanning module 130. The touch detection module 110 is configured to periodically scan the scan lines 11, 12, 13, 14, 15, 21, 22, 23, 〇 24, 25, according to whether the capacitive touch screen is touched. When the capacitive touch screen is not touched, the switch module 120 is used to close the touch detection module 110. Thus, the touch detection module 110 stops scanning the scan lines 11, 12, 13, 14, 15, 21, 22, 23, 24, 25 °. On the other hand, after the touch detection module 110 is turned off, The power-saving scanning module 130 is configured to select at least one set of scan lines from the scan lines 11, 12, 13, 14, 15, 21, 22, 23, 24, 25, and periodically scan the set of scan lines simultaneously. The set of scan lines that are synchronously scanned is sufficient to sense whether the capacitive touch screen is touched. For example, the power-saving scanning module 130 selects all the scanning lines 11, 5, 201039223 12, 13, -15, 2! Scans the scanning lines U 22 23, 24, 25 ' and periodically synchronizes the t-scan lines 21, 22, Um; 130 select all of the scan lines 21, 22, 23, 24 weeks to synchronously scan the second sweep line U, 12, 13, 14, ' △ select J electric scan module 130 ο The line f periodically scans the set of the first-group-scan-throw lines 11, 13, 15 or lines, for example, the odd-numbered f-th sweep modules 130 on the second scan H lines 12, 14; or Selecting at least a group of second broadcasts Z green 22, 23, 24, 25 of the selected lines, for example, an odd number of rows: sweep = sexually synchronously scan the set of second scan lines 22, 24. Real mm1 j, Μ or even second scan = touch on the capacitive touch screen 2: The scan line is enough for the artist to view the need to flexibly choose at the time to be familiar with this technique as a capacitor The touch screen is available for scanning scan lines. The module 110 is configured to periodically detect one by one touch operation, the touch detection detections 15, 21, 22, 23, 24, 25, the known lines 11, U, 13, 14 and the fast response speed, and can be used according to Detect better control resolution and user touch. The user touches, touches, and idles the capacitive touch screen. The operation of the t panel can be divided into three parts: the screen is not touched by the user. The touch is used for the capacitive touch screen; while the touch and wait for the touch time to be touched, the touch test mode is ^, the touch period. The touch detection lines η, 12, 13, 14 ί 2lU 〇 are used to periodically scan the touch detection module 110 for setting the electric machines 22, 23, 24, 25. In practice, after the waiting time, after the waiting time, the screen after the touch screen is touched is not touched by the user, then Christine;; tapping 'that is, the capacitive touch fluorescent state, and Simultaneously entering the power-saving mode touch screen is in an idle state, and the opening module 120 is used for 6 201039223: stopping the action of the touch detection module 110, synchronously scanning the scan lines; Electricity, module 130 weeks - if 4 touch at least one set of sweep lines. At 21, 22, the detection result means that t is not used for touch operation; J' only needs to detect the accuracy of the operation at this time. Therefore, the switch module 120 periodically scans the scan lines of the scan group for the sub-capacitive touch lines 11, 12, 13, 14 / 15, and 13G. For example, at least 22, 23, 24, 25, at least _ step scan of the first sweep line 5U, 12', ^ scan module 13 〇 for periodically with the drawing module 130 for the same, 14, 15; In other words, power-saving sweep 11, U, 13, 14, 15 ^: signal to all the first scan line, the number of charge and discharge is reduced, the number of times. The fewer the number of scans, the other side, the fine build to save power. During the period, the scan-by-scan U〇 can be used in the first scan of the segment, and the synchronous scan can be used to scan at least one of the second sweeps 22, 23, 24, 25 each time: 11, 12, 13, 14, 15, 21, the drawing period can be approximately equal to the second drawing line. As for the first sweeping invention described above, in practice, the first work is merely an illustration, and there is no limitation period. The library period of the skilled person can be greater or less than the second scan week. Please continue to refer to the first elastic adjustment. It. The capacitive touch screen is electrically connected to the device 100 including the switching module 14A. The detection module 110 is turned off: the switching module 140 is used to activate the touch operation, and if the scanning module 120 is saved. In the case of a capacitive touch screen, the 枳 group 130 detects the precise position of the user's re-touching, and the 'j, 、, σ fruit may need to detect the action of using the tracing module 130. The switching module 140 is configured to stop the power saving scan of the first scan lines 11 , 12 , 1 into the touch detection module 11 , periodically sweep, 3, w, 15 and the second scan lines 21 , 22 , 7 201039223 Control resolution and faster response speed in this control. 120, power-saving scanning module 130 disk testing module 110, switching module touch screen driving circuit = for integration in the capacitive medium driving circuit can be used to handle the pinch = power saving for the driving circuit, which is internal The information that can be read and controlled is externally input to the signal conversion switch module 120, the power-saving scanning on the touch-sensitive debt testing module 110, and the implementation manner can be a software program or a hard one. The specific mode of the replacement module I40 needs to be flexibly selected at that time. In fact, expansion. Those skilled in the art should be Ο Ο all hardware circuits, part of the teaching f 2, do not need to be all software programs or continue to refer to the i-th diagram, should be the hardware T screen also includes backlight 030, back 1 inch capacitive touch group 160. When the capacitive touch screen is not U =0 and the backlight start mode is used to turn off the backlight 030. Thus, when the backlight switch module 150 touch screen is touched, the backlight is activated == no light two J capacitor 030. Thus, the backlight 〇3〇 is used to emit light. 〇 used to activate the backlight. In practice, if the touch detection module u 〇 touch operation, the m switch module ΐ 5 〇ϊΜ ^ user does not achieve power saving purposes. On the other hand, if the FF light source 030 is saved, the user can touch the capacitive touch screen again; the two groups 130 detect the active backlight 030 to provide sufficient light. In the present embodiment, the backlight switch finger module 160 can also be integrated into the flip-flop of the capacitive touch screen and the backlight start-up, and the backlight switch module 150 is the same: == two The format can be a software program or a hardware circuit. The implementation of this item 2 needs to be flexible in the implementation of the implementation, the artist should be based on the current circuit, part of the software program or part of the presentation or all hard to another aspect of the invention is a province Electric capacitive touch screen, or widely used & 彳,, /, P... used in the next will be accompanied by the second picture to the first description of the heart / body two ▲ 8 201039223: kind of province ί two f 2 figure is One of the other embodiments in accordance with the present invention includes the following steps 210-25.庑# The steps of the method of correcting electricity 200, except for the hardware devices mentioned in the example, are specifically described as follows. It’s a slap in the face, so it’s no longer important. In step 210, it periodically scans = ί 萤 == degrees and can detect the capacitance of the sensor when it touches the touch. Oh. Therefore, in step 220, the power-saving mode touch screen is used to select the plurality of scan lines one by one, that is, to stop periodically selecting at least one set of scan lines, and to cycle whether the same line is selected to be touched. In other words, Step 220: Sense = type; control the scan line of the screen group, to reduce the number of scans, the number of charge and discharge is reduced, thereby achieving power saving (four) - the fewer the number of people's example, in step 220, the pendulum, the seedling line 'and Periodically synchronizing the sweeps = all of the first scan lines of the screen; or, in steps: f2〇f, periodically synchronizing the scan scan lines' and periodically scanning the scans: Women 2Π^ 9 201039223 Step 220 And scanning the first at least one first scan line, - the trace line or the even number of first scan lines, and selecting at least one of the first scan lines of the odd line, for example In step 220, the second scan line of the second group, for example, an odd number of J lines, and periodically scans the traces. In practice, as long as the sync sweeps, the patch or the even strips of the second scan capacitive touch The touch of the screen can be sensed and cut. It is enough for the user to flexibly choose to use the + 'can be used at the time. It is familiar with the skill of the skilled person. 'Step 220 Scanning of the synchronized sweeping ο If the screen is detected in step 220, the detection is detected. The result means that the user touches the capacitive touch screen. Therefore, the step 2 ° can be stopped = whether the capacitive touch-sensitive capacitive touch screen is touched or not, and return to step 210 to continue detecting Step 230 is used in the capacitive hybrid back-to-back J source side. The backlight does not emit light. The borrowing is controlled by the control: 'On the other hand, if the purpose is measured in step 210. The detection result means that when touched, the detection result means It may be necessary to first: the control screen is subjected to the precise position. Therefore, in step 240, the operation of the 〇 line is scanned for the position of _ electric 2:=2 control. More specifically, ^, in the step fist touch , the scan line 'to achieve a better control resolution, the η capacitive touch screen is touched when the starter source. So, the light source can be illuminated, so as to provide sufficient light. For step 220 Further comparison with step 240, & ^ according to Figure 3 Figure 3 is a sequence diagram of the steps and steps of Figure 2, as shown in the figure, when the operation is in the normal mode in step 24, the scanning lines S1, S2, S3 can be described one by one. ...Sn, in order to achieve better resolution and faster response speed. During the scanning process, the scan line = the pulse width of the scan signal is lt. For example, the scan at step 24〇 201039223 frequency It can be between hundreds of kHz and several MHz. In contrast, when operating in the power saving mode in step 220, since it is only necessary to detect whether the capacitive touch screen is touched, the scanning can be periodically synchronized. a plurality of scan lines S1, S2, S3...Sn for power saving purposes. Alternatively, if the scan lines S1, S2, S3 to Sn can be divided into a first scan line and a second scan line, wherein the first scan The first scanning line or the second scanning line is periodically synchronously scanned to achieve power saving. In FIG. 3, the scan period T2 of step 220 is approximately equal to the scan period T1 of step 240. However, this is merely an example and does not limit the present invention. In practice, the scan period T2 of step 220 may be greater or smaller than the scan of step 240. The cycle 〇T1, those skilled in the art should be flexible at the time. It can be seen from the above embodiments of the present invention that when the capacitive touch screen is not touched, a part of the specific scan lines can be scanned synchronously to reduce the number of scans. When the number of scans is less, the number of charge and discharge times is reduced, so the application of the present invention has the advantage of saving power for the capacitive touch screen. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and retouched without departing from the spirit and scope of the present invention. The scope shall be subject to the definition of the scope of the patent application attached. ® [Simple Description of the Drawings] Fig. 1 is a block diagram of a power saving device in accordance with an embodiment of the present invention. Fig. 2 is a flow chart showing a power saving method in accordance with another embodiment of the present invention. Figure 3 is a timing diagram of steps 220 and 240 of Figure 2. [Description of main component symbols] 11, 12, 13, 14, 15: First scanning lines 21, 22, 23, 24, 25: Second scanning line π 201039223 • 030: Backlight* 100: Power saving device - 110: The touch detection module 120: the switch module 130: the power saving scan module 140: the switch module 150: the backlight switch module 160: the backlight start module 200: the power saving methods 210, 220, 230, 240, 250: Step 〇Sl, S2, S3", Sn: scan line
It :脈波寬度 ΤΙ、T2 :掃描週期 12It : Pulse width ΤΙ, T2 : Scan period 12