201120713 六、發明說明： 【發明所屬之技術領域】 一種數位 本發明是有關於一種觸控屏幕，特別涉及 式電容觸控屏幕。 【先前技術】 =是人類最重要的感知方式，是人與機 腦、智慧型電話、公共資訊系統、智慧 m。在目前的觸控領域中，主要包括電阻： 觸控屏幕、㈣式觸控屏幕、超聲波 ^ 幕亦發展迅速。料來—種投射電容式觸控屏 2電阻式觸控屏幕仍是目前市場上的主導產品 面：幕的雙層基板結構’使得觸控屏幕和顯示 的心豐ί:?使二:，觸控屏幕上的反光影響了顯示 質大幅下降，L ί和度等顯示品質，使整個顯示品 大漲m電^光的亮度則更會使功耗 時要進行觸移的問題，不 工作方式，也會使得觸 且式觸控屏幕電極接觸的 而紅外線式觸控屏幕 影響顯示品質，聲波式觸控屏幕雖較不會 幕成本高，且水滴式觸控4幕和超聲波式觸控屏 可靠性，特別0:J埃都會影響該些觸控屏幕工作的 特別疋紅外線式觸控屏幕㈣聲波式觸控屏幕 4 201120713 功耗大’使得紅外線式觸控屏幕和超聲波式 觸控屏幕無法應用在可搞式電子產品上。 面電容式觸控屏幕的單層基板的結構，使 侍觸控屏幕和顯示面㈣疊在—起 ==響不大，但平面電容式觸控屏幕=2 立/示移㈣4，不時要進行位置校準， ，屏幕I作的可靠性，特別是平面電 耗大、成本高，—丄 Η工钟眷功 可携式產品上Λ料面電谷式觸控屏幕無法應用在 紗容式觸控屏幕可為單層基板結構，也使得 觸=幕和顯示面板層疊在—起使用時，觸控屏幕對顯 ==ΓΑ。但投射電容式觸控屏幕是通過測量 觸控物對觸控屏幕電極間輕合電容的影響， ί:= 指ΐ其他觸控物對觸控屏幕電極充放 置：：：點測手指或其他觸控物在觸控屏幕上的位 屏幕，在製===:非真正的數位式觸控 幕工作的可靠性，且二兄：：“布電容都會影響觸控屏 且.·、'員不驅動信號及其他電彳古 =觸::幕::一 電阻值方面有:高3電 用的投射電容式觸控屏幕的探測電：線層:二= Γ率=電=明電極層，還要有如金編Ϊ電 ==赶程序複雜、成本高，特別是在大 超大尺寸觸控屏幕方面成本過於昂貴。 201120713 【發明内容】 有鑑於上述習知之問題，本發明之一目的就是實現 真正高解析度的數位式電容觸控屏幕。 本發明的數位式電容觸控屏幕基本概念是在觸控基 板上設置兩組相交的電極組，電極組的各條電極線連接 =控激發源’觸控激發源向電極線施加交流的觸控激發 信號。當人的手指或其他觸控物靠近或接某條電極線 時，手指或其他觸控物與電極間形成耦合電容，電極線 上的觸控激發信號就會通過此耦合電容部分洩漏出去。 觸控電路透過探測各條電極線觸控信號變化的大小，找 出漏電流最大的或漏電流超過某門檻值的電極線，從而 找出手指或其他觸控物在觸控基板上的位置。 …本發明通過同時對多條電極線施加觸控激發信號， 減少觸控信號在檢測電極之間及檢測電極和非檢測電極 之間的竄擾流動’控制觸控信号虎的流向’ #高對被觸電 極判斷的準確性，真正實現數位式的電容觸控屏幕。 本發明的數位式電容觸控屏幕，通過檢測各條電極 線上觸控信號變化量的相對值來確定被觸電極線，降低 對電極線的電阻值方面的要求，實現大尺寸、甚至超大 尺寸的電容觸控屏幕。 本發明的技術問題可透過以下的技術方案予以 決： 一種數位式電容觸控屏幕，包括觸控基板和觸控電 路，觸控電路具有觸控激發源和觸控信號檢測電路；在 觸控基板上設置有不少於兩組相交的電極組，電極組的 201120713 f條電極線連接觸控激發源，在觸控電路卫作的時段 時間點上’觸控激發源對兩條以上電極線同 “加以觸控信號，且觸控信號檢測電路選科中至少 呆護的電極線為檢測電極；所述檢測電極是 桎觸抻二二轭加有觸控信號的同時，還檢測流經該電 的變化；所述有料保護的電極是指在該電 極:兩側的電極線上施加有觸控信號的電 的電極。線相交的電極線上施加有觸控信號 部八f的另一個特徵’本創作每-時間點選擇 於、。ff作為檢測電極，在對檢測電極線施加觸控信 極線上觸控信號的變化的同時，也對;; 電極t 觸控信號；所述施加觸控信號的非檢測 所；觸控電路的各條電極線中，除檢測電極外 所有的非檢測電極或部分的非檢測電極。 信號並檢測流經::電:檢測電極施加觸控 極相交的Ϊ二加觸控信號;所述與檢測電 檢測電極相交的部分檢測電極相交的所有電極或與 仲明的另一個特徵’在對檢測電極施加觸控 控信號變化的同時，也對與 極或與檢測電極不的;:::電極不相交的所有電 201120713 根據本發明的另一個 ， 信號並檢測流經檢洌 網二，在對檢測電極施加觸控 檢測電極相交的和與檢挪同時’也對與 控信號；所述與檢測不相父的其他電極施加觸 其他電極，是與檢测 ：的和與檢測電極不相交的 所有電極，或是與檢测電極目父，與檢测電極不相交的 的部分電極。 、°相父的和與檢測電極不相交 根據本發明的另一 輸出的觸控信號是頻率不二斤述觸控電路對電極線 流信號。 ；50Kfiz、包括零幅值的交 根據本發明的另一個 電極上所施加觸控信號的幅：觸控信號的 至少一項是不同的。 才位、頻率或編碼中的 電極，觸控電路選擇檢測 測電流經檢測電極二二==作為一組檢 電極，是同一時間點選擇兩I八^觸控電路選擇檢測 別作為兩組或多於兩組多t兩部分電極線分 檢測電極觸控信號的變化。“刀別檢測流經各組 根據本發明的另一個 由—條或多條電極線組成。丈戶斤述母一組檢測電極是 8 201120713 根據本發明的另一 電極是以掃插的方式 政’所述觸控電路選擇檢測 的電極線作為檢測電極。、，不同時間點選擇不同部分 狳卜另—個特徵’所述鋪批φ 、袁上的觸控信號，檢 〇觸控電路檢測電極 少一種。 罨々丨旎和電壓信號t的至 根據本發明的另一 線上的觸控信 所述觸控電路檢測電極 號和脈衝數中的至幅值、時間、相位、頻率信 條電極線上的觸:二=:’觸控電路是通過檢測各 化率的差別，來確2::號變化量或觸控信號變 控物=i發:徵，為了能更精準地確定觸 線的數量，觸控j路基板上連接觸控電路電極 == 量或觸控信號變化率的差別，來計算 確疋觸控物位於電極線間的觸摸位置。 τ异 m 的另—個特徵’以檢測到觸控信號或觸 化置或觸控信號變化率最大的位置為被觸位 鐵」以檢㈣觸控信號或觸控信號變化量或觸控信號 =過某設定門播值的位置為被觸位置’或以檢測 、控#號或觸控信號變化量或觸控信號變化率最大並 超過某ό又疋門襤值的位置為被觸位置。 根據本發明的另一個特徵，所述觸控基板上連接觸 控電路的電極組’是兩組正交的電極組。 201120713 根據本發明的另—個 控電路的電極線的邊緣為：線基板上連接觸 角大於2〇。小於]6〇。。 線，折線上兩相鄰直線的夾 根據本發明的另一 極，除具有連接 固特二’所述觸控基板上的電 控電路的電極。㈣㈣極、㈣’還具有不連接觸 兩組相交另’所述觸控基板上不少於 根據本發明的另一;設置在不同基板上。 組相交的電極組，是所述觸控基板上至少兩 電極間以絕緣層相^在同-基板的不同層上，各層 與相3=:::另一個特徵，所述觸控基板上設置有 乂電極組絕緣隔離的遮罩電極。 冤極線设置於觸控基板的觸摸面。 控電特徵’所述觸控基板上連接觸 冤才線6又置於觸控基板的非觸摸面。 或硬另-個特徵，所述觸控基板是撓性的 本發明與現有技術對比的有益效果是： 本發解析度的數位式電容觸控屏幕。 同時施力艏批 幕，通過對檢測電極和非檢測電極 測號在檢測電極之間及檢 將對被觸電極判斷的準確性，提高到可分辨每一條 201120713 電極線，真正實現數位式的電容觸控屏幕。 對各檢測電極所施加觸控信號的幅值、相位、頻率 或編碼也可以調整為不同，對非檢測電極所施加觸控信 號的幅值、相位、頻率或編碼與對檢測電極所施加的觸 控信號的幅值、相位、頻率或編碼也可以調整為不同， 以便更精準地控制觸控信號的流向。 、本發明可以實現大尺寸電容觸控屏幕。本發明的數 位式電容觸控屏幕，通過檢測各條電極線上觸控信號或 觸控信號變化量或觸控信號變化率的差別，也就是通過 檢測各條電極線之間觸控信號的相對值，來確定被觸電 極線，對電極線的電阻值方面沒有過高要求，在大尺寸 觸控屏幕電極線變長、電阻值變大時，仍,然可以通過測 量各條電極線之間觸控信號的相對值，來準確確定被觸 電極線’實現大尺寸、甚至超大尺寸的冑容觸控屏幕。 判斷被觸電極線的條件，可以檢測到觸控信號變化 最大並超過某設定門檻值的電極線為被觸電極線，觸控 式平板顯示器以單點觸控。判斷被觸電極線的條件 可只以檢關觸控錢變化超過某設定門檻值的電極線 為被觸電極線，讓本發明的數位式電容觸控轉 時多點觸控。 本發明的數位式電容觸控屏幕結構簡單，目前顯示 =和觸控屏幕的通俗製造技術容易實現，使得該觸控屏 幕的成本低、可靠性高。 【實施方式】 11 201120713 為=㈣查員瞭解本發明之發明特徵、内容與優點 -所能達成之功效，兹將本發明配合附圖，並以實施 例之表達形式詳細說明如下。 具體實施方式一 如第1圖所示的數位式電容觸控屏幕1〇〇，其包括 ^控板110和觸控電路140 $。觸控板11〇上設置有兩 、、且相互正交的行電極組12Q(有行電極線m、122、…、 12m)和列電極組13〇(有列電極線i3i、i32、…、13 =電路140具有行觸控電路⑷、列觸控電路142和 ^判斷電路143等。行電極組12()的各電極線均連接 路141，列電極組130的各電極線均連接到 控電路142,行觸控電路141和列觸控電路142均 電路143。所述觸控電路，包括行觸控電 控電路142，無論是行觸控電路141還是 二路142❺包括有觸控激發源和觸控信號檢測電 二2施：式後續的敍述中，包括後續其他實施方式 路^用“/不再細分觸控激發源和觸控信號檢測電 路，，來_。 仃觸控電路”或“列觸控電 行』=電同電广2°進行觸咖 121、12? ^時選擇订電極組120的所有行電極線 電極線施加觸控信二 所有的行 所有的列電轉也縣舆行_轉⑷對行=施1Γ 12 201120713 的完全相同的觸控信號，行艏批雪攸7^ μ、 經各條行電極線的觸控,4::! II別檢測流 L7 ^ 徑L唬的邊化，控制判斷電路143 :!路⑷檢測到流經的觸控信號變化量最大並 ί過：：疋之門檻值的行電極線為被觸行電極線， 1 二電==°對列電極組130進行觸控探測，列觸 1TJ 選擇列電極組130的所有列電極線 ·、13η作為列檢測電極，同時對所有的列 施加觸控信號’行觸控電路141對行電極組120 f的仃電極線也施加與蘭控電路142對列電極施加 相同的觸控信號’列觸控電路142並分別檢測流 、么各條列電極線的觸控信號的變化，控制判斷電路⑷. 以列觸控電路142檢測到流經_控信號變化量最大並 超過某設定Η檻值的列電極線為被觸列電極線。觸控電 路140反復在對行電極組12〇和對列電極組13〇進行觸 控探：間轉換’由探測到的被觸行電極線和被觸列電極 線的交又點’確定出被觸點位置，形成識別m χ η觸控 點的數位式電容觸控屏幕。 判斷被觸電極、線的條件，也可不以檢測到流經的觸 控信號變化量最大並超過某設定閾值的電極線為被觸電 極線，而以檢測到流經的觸控信號變化量超過一設定門 檻值的如二大電極線的位置加權觸控信號變化量的平均 值為觸控位置，這樣計算得出的觸控位置往往不在某電 極線的中心位置，從而得到識別更精準的、多於m X η 觸控點的數位式電容觸控屏幕。 為了讓操作者觸摸數位式電容觸控屏幕時，觸控信 201120713 號的變化量足夠大，以把俨+植 以抵抗干擾便於測量，故讓觸控信 5虎有足夠的穿透力，觸批雷枚批兩』^ 觸控電路對電極線輸出的觸控信號 的頻率不應小於5〇ΚΗζ。 、9觸控探測電路檢測電極線上的觸控信號，檢測的可 以疋電壓L號’也可以是電流信號；檢測的可以是幅值、 也可以是相位或頻率信號，檢測的也可以是在電極線對 電容充放電時間段内計數H記錄的脈衝數。 >判斷被觸電極線的條件，也可只以檢測到流經的觸 f信號變化量超過某設定門檻值的電極線為被觸電極 線’進而讓數位式電容觸控屏幕允許同時多點觸控。 具體實施方式二 如第1圖所示的數位式電容觸控屏幕1〇〇，包括觸 控板110和觸控電路140 $。觸控板11〇上設置有兩組 相互正交的行電極組120 (有行電極線121、122..... 12m)和列電極組13〇(有列電極線131132、…、i3n)〇 觸控電路140具有行觸控電路⑷、_控電路142和 控，判斷電路143等。行電極組12()的各電極線均連接 到行觸控電路141，列f極組13G的各電極線均連接到 列觸控電路142，行觸控電路141，和列觸控電路142 均連接控制判斷電路143。 、觸控電路140同時對行電極組12〇和列電極組13〇 進行觸控探測。行觸控電路141同時選 ，所有行電極線m、122、·..、心料行檢測電極， 同時對所有的行電極線施加觸控信號，列觸控電路142 14 201120713 對列電極組13 0所有的列電極線也施加與行觸控電路 141對行電極施加的完全相同的觸控信號，行觸控電路 141並分別檢測流經各條行電極線的觸控信號的變化， 控制判斷電路143以行觸控電路141檢測到流經的觸控 信號變化量最大並超過某設定門檻值的行電極線為被^ 行電極線； 列觸控電路142也同時選擇列電極組13〇的所有列 電極線13卜132.....丨加作為列檢測電極，同時對所 有的列電極線施加觸控信號，行觸控電路141對行電極 、’且120所有的行電極線也施加與列觸控電路142對列電 極施加的完全相同的觸控信號，列觸控電路142並分別 檢測流經各條列電極、線的觸控信號的變化，控制判斷電 路143以列觸控電路142檢測到流經的觸控信號 最大並超過某設以㈣值的列電極線為被觸列電極線。 觸控電路14〇不斷重複對行電餘m和對列電極組 托綠的?控n由探測到的被觸行電極線和被觸列電 M = f叉點’確定出被觸點位置，形成識別m X η觸 控點的數位式電容觸控屏幕。 觸電極線的條件，也可不以檢測到流經 變化量t大並超過某設定門捏值的電極線為被觸 門#值的到流經的觸控信號變化量超過某設定 = 電= 權觸控信號變化量的平 電極線的中心位置:觸控位置往往不在某 觸控點的數位式電容=識別更精準的、多於… 201120713 、β觸控探測電路檢測電極線上的觸控信號，檢測的可 、疋電堊彳„號，也可以是電流信號；檢測的可以是幅值、 也可以是相位或頻率信號，檢測的也可以是在電極線對 電容充放電時間段内計數器記錄的脈衝數。 >判斷被觸電極線的條件，也可只以檢測到流經的觸 控L號I：化i超過某設^門檻值的電極線為被觸電極 線，讓數位式電容觸控屏幕允許同時多點觸控。 具體實施方式三 如第1圖所示的數位式電容觸控屏幕1〇〇，包括觸 控板110和觸控電路140 #。觸控板11〇上設置有兩紐 相互正交的行電極組120 (有行電極線121、122、…、 12ra)和列電極組13〇 (有列電極線131、132、…、1加）。 觸控電路140具有行觸控電路141、列觸控電路142和 控制判斷電路143等。行電極組12G的各電極線均連接 到行觸控電路⑷，列電極組13G的各電極線均連 列觸控電路142，行觸控電路14卜和列觸控電路142 均連接控制判斷電路143。 I先，觸控電路140對行電極組12〇進行觸控探 電路141以掃描的方式，每—㈣點選擇行電極 η細、1f.....12m中的―條電極線作為行檢測電極 厂控信號，並檢測流經此條電極線的觸控信號的變 電極2，行觸控電路141對其餘所有非檢測電極的行 =線也施加與對檢測電極施加的觸控信號完全相同的 觸料號，列觸控電路142對所有的列電極線也施加盘 201120713 對檢測電極施加的觸控信號完全相 Γ電路143以行觸控電路141檢測== 量最大並超過某設定門楹值的行電極線為被 = 極線’然後’觸控電路140對列電極組130進行觸 :良132、…、13η中的-條電極線作為列檢測 電極施加觸控錢，並檢測流經此條電極線的觸控㈣ =變^ ’同時’列觸控電路142對其餘所有非檢測電極 的列電極線也施加與對檢測電極施加的觸控信號完 同的觸控信號，行觸控電路141對所有的行電極線也施 加與對檢測電極施加的觸控信號完全相同的觸控信號， 控制判斷電路143以_控電路142檢測到流經的觸控 信號變化量最大並超過某設定門彳紐的列電極線為被觸 列電極線。觸控電路14〇反復在對行電極組12〇和對列 電極組130進行觸控探測間轉換，由探測到的被觸行電 極線和被觸列電極線的交又點，確定出被觸點位置，形 成識別m X η觸控點的數位式電容觸控屏幕。 ^對檢測電極施加觸控信號的同時，對非檢測電極所 %加觸控仏號的幅值、相位、頻率與對檢測電極所施加 的觸控信號的幅值、相位、頻率也可以調整為不同，以 ，更精準地控制觸控信號的流向。對檢測電極施加觸控 t號的與對非檢測電極所施加觸控信號的不同，可以是 幅值、相位、頻率都不相同，也可以只是幅值、相位、 頻率中的一項或兩項不同。 觸控探測電路檢測電極線上的觸控信號，檢測的可 17 201120713 >是電唬，也可以是電流信號；檢測的可以是幅值、 雷相位或頻率信號，檢測的也可以是在電極線對 谷充放電時間段内計數器記錄的脈衝數。 1斷被觸電極線的條件，也可不以檢測到流經的觸 ^ / 變化量最大並超過某s定門檻值的電極線為被觸 亟線，而以檢測到流經的觸控信號變化量超過某設定 門檻值的前三大電極線的位置加權觸控信號變化量的 均值為觸控位置’這樣計算得出的觸控位置往往不在某 電極線的中錢置’從而得到識別更精準的、多於… 觸控點的數位式電容觸控屏幕。 判斷被觸電極線的條件，也可只以檢_流經的觸 ，信號變化量超過某設定Η檻值的電極線為被觸電極 線，讓數位式電容觸控屏幕允許同時多點觸控。 為了避免誤觸控，可控制判斷電路加以排除 控電路雖然檢測到的觸控信號變化量最大並超過某設定 門檻值’但觸控信號隨時間變化率過大（過快誤觸° f控信號隨時間變化率過小（過慢誤觸）的電極線為被 觸電極線。 具體實施方式四 如第2圖所示的數位式電容觸控屏幕2〇〇，包括 控板21G和觸控電路24G等。觸控板21()上設置有兩电 相互正交的行電極組22〇 (有行電極線22i、、…、 他、22i +卜:.·、22„〇和列電極組23〇(有列電極線如、 232 ..... 23j ' 23i + 1.....23n)。觸控電路 240 具有行 18 201120713 觸控電路24〗、列觸控電路242和控制判斷電路243等。 行電極組220的各電極線均連接到行觸控電路，列 電極組230的各電極線均連接到列觸控電路犯，行觸 控電路241’和列觸控電路242均連接控制判斷電路243。 —首先’觸控電路240對行電極組22〇進行觸控探測， 订觸控電路241以掃描的方式，每一時間點從行電極線 221 ' 222 ..... 22i巾選擇一條電極線作為檢測電極施 加觸控信號，從行電極線22U1、…、22m中選擇另一條 電極線也作為檢測電極施加觸控信號，並分別檢測流經 此兩條電極線的觸控信號的變化，同時，行觸控電路241 對其餘所有非檢測電極的行電極線也施加幅值、相位、 頻率都完全相同的觸控信號，列觸控電路242對所有的 列電極線也施加幅值、相位、頻率都完全相同的觸控信 號，控制判斷電路243以行觸控電路241在所有行 線221、222、…、22i、22ι + 1、…、22m中檢測到流經 的觸控信號變化最大並超過某設定門檻值的行電極線為 被觸行電極線；然後，觸控電路240對列電極組230進 行觸控探測，列觸控電路242以掃描的方式，每一時間 點從列電極線231、232 ..... 23 j中選擇一條電極線作 為檢測電極施加觸控信號，從列電極線23j + l、··.、23n 中k擇另條電極線也作為檢測電極施加觸控信號，並 分別檢測流經此兩條電極線的觸控信號的變化，同時， 列觸控電路242對其餘所有非檢測電極的列電極線也施 加幅值、相位、頻率都完全相同的觸控信號，行觸控電 路241對所有的行電極線也施加幅值、相位、頻率都完 19 201120713 =相同的觸控信號，控制判斷電路243以列觸控電路242 f所有列電極線23卜232、…、23j、23j + l、…、23n :檢測到流經的觸控信號變化最大並超過某設定門根值 列電極線為被觸列電極線。觸控電路24G反復在對行 ^極，>且220和對列電極組230進行觸控探測間轉換，由 探測到的被觸行電極線和被觸列電極線的交叉點，確定 出被觸點位置’形成識別m X η觸控點的數位式電容觸 控屏幕。 由於行觸控電路241和列觸控電路242都是同時選 擇了兩條電極線作為檢測電極，以分區同時掃描的方式 進行觸控探測，縮短了探測整個觸控屏幕上觸摸點 間。 ^對檢測電極施加觸控信號的同時，對非檢測電極所 知加觸控彳s號的幅值、相位、頻率與對檢測電極所施加 的觸控信號的幅值、相位、頻率也可以調整為不同，以 便更精準地控制觸控信號的流向。對檢測電極施加觸控 信號的與對非檢測電極所施加觸控信號的不同，可以是 中田值、相位、頻率都不相同，也可以只是幅值、相位、 頻率中的一項或兩項不同。 判斷被觸電極線的條件，也可不以檢測到流經的觸 控信號變化最大並超過某設定門檻值的電極線為被觸電 極線，而只以檢測到流經的觸控信號變化超過某設定門 才®L值的電極線為被觸電極線，讓觸控式平板顯示器允許 同時多點觸控。 ° ° 為了避免誤觸控，可控制判斷電路加以排除，行觸 20 201120713 =雖信號變化量最大並超過某設定 觸控信號隨時間變化;過誤觸)或 觸電極線》 的電極線為被 具體實施方式五 控二：=數位式電容觸控屏幕_，包括觸 :互=行電極組叫有行電極二 232 ^-Λ ；3；；2^ 觸控電路241、引」、…、23η)°觸控電路24〇具有行 2 、列觸控電路242和控制判斷電路243等。 亟組220的各電極線均連接到行觸控電路如，列 電極組23G的各電極線均連接到列觸控電路⑽ 控電路241，和列觸控電路242均連接控制判斷電路如。 ^首先，觸控電路240對行電極組220進行觸控探測， 仃觸控電路241以掃描的方式，每—時間點從行電極線 221 ' 222 ..... 22i中選擇一條電極線作為檢測電極施 加觸控信號，從行電極線22i + 1.....22m中選擇另一條 電極線作也為檢測電極施加觸控信號，並分別檢測流經 此兩條電極線的觸控信號的變化，同時，行觸控電路24ι 對其餘所有非檢測電極的行電極線也施加幅值、相位、 頻率都完全相同的觸控信號，列觸控電路242對所有的 列電極線也施加幅值、相位、頻率都完全相同的觸控信 號’控制判斷電路243以行觸控電路241在行電極線 21 201120713 221 % 999 n . 、.....22i中檢測到流經的觸控信號變化最大 二超過某設定⑽值的行電極線為被 判斷電路243也以行電極線221 + 1、…、22m中：測= 、：的觸控信號變化最大並超過某設定門檻值的行電極 為^皮觸行電極線；然後，觸控電路240對列電極組23〇 進行觸控探測，列觸控電路242以掃描的方式，每一 間點從列電極線23卜232 ..... 23j、23j + l.....23n 中選擇條電極線作為檢測電極施力口觸控信號，並檢測 流經此條電極線的觸控信號的變化，同時，列觸控電路 242對其餘所有非檢測電極的列電極線也施加幅值、相 位、頻率都完全相同的觸控信號，行觸控電路241對所 有的行電極線也施加幅值、相位、頻率都完全相同的觸 控信號，控制判斷電路243以列觸控電路242在所有列 電極線231、232、…、23J-23H1、…、23η中檢測到 流經的觸控信號變化最大並超過某設定門檻值的列電極 線為被觸列電極線。觸控電路24〇反復在對行電極組22〇 和對列電極組230進行觸控探測間轉換，由探測到的被 觸行電極線和被觸列電極線的交又點，確定出被觸點位 置，形成以行電極線22i為分界，分別在觸控板21 〇上 下半區識別i X n觸控點和（m_丨）χ n觸控點的數位式 電谷觸控屏幕。 對檢測電極施加觸控信號的同時，對非檢測電極所 施加觸控信號的幅值、相位、頻率與對檢測電極所施加 的觸控信號的幅值、相位、頻率也可以調整為不同，以 便更精準地控制觸控信號的流向。對檢測電極施加觸控 22 201120713 1號的與對非檢測電極所施加觸控信號的不同，可以是 巾田值、相位、頻率都不相同，也可以只是幅值、相位、 頻率中的一項或兩項不同。 為了避免誤觸控，可控制判斷電路加以排除，行觸 控電路雖然檢測到的觸控信號變化量最大並超過某設定 門檻值，但觸控信號隨時間變化率過大（過快誤觸）或 觸控信號隨時間變化率過小（過慢誤觸）的電極線為被 具體實施方式六 如第3圖所示的數位式電容觸控屏幕的觸控板 300包括上基板310和下基板320，上基板31〇和下基 板320由粘接物330粘接成一體。上基板31〇的内侧表 面上设置有邊緣為直線的電極線組成的條形電極組340 (有電極線341、342、…、34m)，下基板320的内側表 面上設置有邊緣為直線的電極線組成的條形電極組35〇 (有電極線351、352、…、35η)，電極組350的方向與 電極組340的方向相垂直。電極組34〇和電極組35〇用 於連接觸控電路的引出端，分別設置在上基板31〇和下 基板320的兩個相垂直的邊緣上。 具體實施方式七 如第4圖所示的數位式電容觸控屏幕的觸控板 400，為了觸控板400置於顯示器前使用的目的，讓觸控 板400儘量減少對顯示效杲的影響，基板採用單片透明 23 201120713 基板410。基板410的上側表面上設置有邊緣為折線的 電極線組成的條形電極組42〇(有電極線421、422 ..... 42ra) ’基板410的下侧表面上設置有邊緣為折線的電極 線組成的條形電極組430(有電極線431、432、…、43n), 電極組430各電極線的中心線的方向與電極组42〇各電 極線的中心線的方向相垂直。電極組42〇和電極組43〇 邊緣的折線上兩相鄰直線的夹角α大於2〇。小於 電極組420和電極組430用於連接觸控電路的引出端， 分別設置在基板410的兩個相垂直的邊緣上。為了讓使 用者不要直接觸碰電極組420，在電極組420的外側設 置有絕緣層4 4 0。 具體實施方式八 如第5圖所示的數位式電容觸控屏幕的觸控板 500’為了觸控板500置於顯示器前使用的目的，讓觸控 板500儘量減少對顯示效果的影響，基板採用單片透明 基板510。基板510非觸摸面一側的表面上設置有邊緣 均為直線的電極線組成的條形電極組52〇 (有電極線 521 ' 522 ..... 52m)和條形電極組530 (有電極線531、 532 ..... 53n)，電極組520和電極組530處於在不同層 上，電極組520和電極組530兩層電極間以絕緣層54〇 相間隔。為了觸控板500在顯示器前使用時，觸控板5〇〇 各處儘量具有相近的透射率，基板51〇面上未被電極組 520和電極組530的投影覆蓋的區域，在電極組52〇的 同一層設置有分散電極組550。電極組52〇各電極線的 24 201120713 =線=方向與電極組53G各電極線的中心線 電極組52〇和電極組咖用於連接觸控電路的才引 出知’刀別設置在基板510的兩個相垂直的邊緣上。 具體實施方式九 議如為第J圖所示的數位式電容觸控屏幕的觸控板 ’為了觸控板600置於顯示器前使用的目的，讓觸控 板_儘量減少對顯示效果的影響，基板採用單片透明 基板610。基板㈣非觸摸面—側的表面上設置有邊緣 均為直線的電極線組成的條形電極組62〇 621 ' 622、…、62m)和條形電極組630 (有電極線631”、 632、…、63n)，電極組620和電極組Θ30處於在不同層 上，電極組62G和電極組630兩層電極間以絕緣層64曰〇 相間隔。為了觸控板600在顯示器前使用時，觸控板6〇〇 各處儘量具有相近的透射率，基板㈣面上未被電極组 620和電極組630的投影覆蓋的區域，在電極組⑽的 同-層設置有分散電極組650。電極組62〇各電極缘的 中心線的方向與電極組63G各電極線的中心線的方向相 垂直。電極組620和電極組630用於連接觸控電路的引 出端，分別設置在基板610的兩個相垂直的邊緣上。為 了防止顯示器内或機器内電信號對觸控板6〇〇上觸控信 號的干擾，再在電極組630的内側增設一層遮罩電^ 660’遮罩電極660與電極組63〇㈣電極間以絕緣層 670相間隔。 25 201120713 具體實施方式十 如第7圖所示的數位式電容觸控屏幕的觸控板 ’為了觸控板70G置於顯示器前使用的目#，讓觸控 板700儘量減少對顯示效果的影響，基板採用單片透^ 基板710。基板710觸摸面一側的表面上設置有邊緣均 為直線的電極線組成的條形電極組72 722、…、心)和條形電極請⑽極線731^ 73η) ’電極組720和電極組73〇處於在不同層上，電極 組720和電極、组730兩層電極間以絕緣層74〇相間隔。 為了讓使用者不要直接觸碰電極組73〇，在電極組㈣ 的外侧設置有絕緣層76〇。為了觸控板在顯示器前 使用時’觸控板700各處儘量具有相近的透射率，基板 ^0面上未被電極、組720和電錄73〇的投影覆蓋的區 在電極組730的同一層設置有分散電極組75〇。電 極組720各電極線的中心線的方向與電極組73q各電極 線的中心線的方向相垂直。電極組7 2 〇和電極組7 3 〇用 =接觸控電路的引出端，分別設置在基板7ig的兩個 觸批ί 緣上為了防止顯不器内或機器内電信號對 觸控板700上觸控信號的干擾，在基板71〇非觸摸面一 側的表面上設置一層遮罩電極77〇。 以上内容是結合具體的較佳實施方式對本發明所作 詳細說明，不能認定本發明的具體實施只局限 ;d 4明。對於本發明所屬技術領域的*通技 來說，在不脫離本發明構思的前提下，尚可做出若干簡 早推演或者，都應當視為屬於本發明的保護範圍。 26 201120713 【圖式簡單說明】 第1圖是本發明具體實施方式一至三的連接示意圖； 第2圖是本發明具體實施方式四和方式五的連接示意圖； 第3圖是本發明具體實施方式六的結構示意圖； 第4圖是本發明具體實施方式七的結構示意圖； 第5圖是本發明具體實施方式八的結構示意圖； 第6圖是本發明具體實施方式九的結構示意圖；以及 第7圖是本發明具體實施方式十的結構示意圖。 27 201120713 【主要元件符號說明】 10(h數位式電容觸控屏幕； 110:觸控板； 120:行電極組； 130 :列電極組； 140:觸控電路； 141:行觸控電路； 142:列觸控電路； 143:控制判斷電路； 200:數位式電容觸控屏幕； 210:觸控板； 220:行電極組； 230:列電極組； 240:觸控電路； 241:行觸控電路； 242:列觸控電路； 243:控制判斷電路； 3 0 0 :觸控板； 310:上基板； 320:下基板； 3 3 0:枯接物； 340:電極組， 3 5 0 :電極組， 4 0 0 :觸控板； 410:基板； 28 201120713 420:電極組； 4 3 0:電極組， 440:絕緣層； 5 0 0 :觸控板； 510:基板； 520 :電極組； 5 3 0 :電極組； 540:絕緣層； 5 5 0 :分散電極組； 600:觸控板； 610:基板； 620:電極組； 630:電極組； 640:絕緣層； 6 5 0:分散電極組； 6 6 0:遮罩電極； 670:絕緣層； 700:觸控板； 710:基板； 720:電極組； 730:電極組； 740:絕緣層； 7 5 0:分散電極組； 760:絕緣層；以及 7 7 0 :遮罩電極。 29201120713 VI. Description of the Invention: [Technical Field of the Invention] A Digital Position The present invention relates to a touch screen, and more particularly to a capacitive touch screen. [Prior technology] = is the most important way of human perception, it is human and brain, smart phone, public information system, wisdom m. In the current touch field, mainly including resistors: touch screens, (four) touch screens, and ultrasonic screens have also developed rapidly. It is expected that a kind of projected capacitive touch screen 2 resistive touch screen is still the leading product surface on the market: the double-layer substrate structure of the screen makes the touch screen and the display heart rich: The reflection on the control screen affects the display quality, and the display quality such as L ί and degree, so that the brightness of the whole display product is increased, and the brightness of the light is more likely to cause the touch when the power consumption is not working. It also makes the touch-sensitive screen electrode contact and the infrared touch screen affects the display quality. The acoustic touch screen has a higher cost than the screen, and the drop-type touch screen and the ultrasonic touch screen reliability Special 0:JE will affect the operation of these touch screens. Special infrared touch screen (4) Sonic touch screen 4 201120713 Power consumption is large, so that infrared touch screen and ultrasonic touch screen cannot be applied. Engage in electronic products. The structure of the single-layer substrate of the capacitive touch screen enables the touch screen and the display surface (four) to be stacked in the same direction, but the flat capacitive touch screen = 2 vertical / shift (four) 4, from time to time Position calibration, the reliability of the screen I, especially the plane power consumption, high cost, - the completion of the clock on the portable product, the electric touch screen can not be applied to the yarn touch The control screen can be a single-layer substrate structure, and the touch screen and the display panel are stacked together to display the touch screen pair ==ΓΑ. However, the projected capacitive touch screen is used to measure the effect of the touch object on the light-combining capacitance between the touch screen electrodes. ί:= refers to other touch objects to charge the touch screen electrode::: tap the finger or other touch The position of the control object on the touch screen, in the system ===: the reliability of the non-real digital touch screen work, and the second brother: "The cloth capacitance will affect the touch screen and. ·, 'members do not drive signals and other electric 彳 ancient = touch:: screen:: a resistance value: high 3 electric projection capacitive touch screen detection: line layer: two = Γ rate = electricity = The electrode layer is also like gold-coded===The program is complicated and costly, especially in the case of large and large touch screens. 201120713 SUMMARY OF THE INVENTION In view of the above conventional problems, it is an object of the present invention to realize a truly high-resolution digital capacitive touch screen. The basic concept of the digital capacitive touch screen of the present invention is to provide two sets of intersecting electrode groups on the touch substrate, and each electrode line connection of the electrode group = control excitation source 'touch excitation source to apply alternating current touch to the electrode line Excitation signal. When a person's finger or other touch object approaches or connects to an electrode line, a coupling capacitance is formed between the finger or other touch object and the electrode, and the touch excitation signal on the electrode line is partially leaked through the coupling capacitor. The touch circuit detects the change of the touch signal of each electrode line to find the electrode line with the largest leakage current or the leakage current exceeding a certain threshold value, thereby finding the position of the finger or other touch object on the touch substrate. The invention reduces the turbulent flow between the detecting electrodes and between the detecting electrodes and the non-detecting electrodes by simultaneously applying a touch excitation signal to the plurality of electrode lines to control the flow direction of the touch signal tiger. #高对被The accuracy of the touch electrode judgment truly realizes the digital capacitive touch screen. The digital capacitive touch screen of the present invention determines the contacted electrode line by detecting the relative value of the change amount of the touch signal on each electrode line, and reduces the resistance value of the electrode line, thereby realizing a large size or even an oversized size. Capacitive touch screen. The technical problem of the present invention can be determined by the following technical solutions: a digital capacitive touch screen comprising a touch substrate and a touch circuit, the touch circuit having a touch excitation source and a touch signal detection circuit; and the touch substrate There are not less than two sets of intersecting electrode groups, and the 201120713 f electrode lines of the electrode group are connected to the touch excitation source, and the touch excitation source is the same for the two or more electrode lines at the time of the touch circuit. "The touch signal is applied, and at least the electrode line of the touch signal detecting circuit is a detecting electrode; the detecting electrode is a touch 抻 二 conjugate plus a touch signal, and also detects the flow through the electric The material-protected electrode refers to an electrode on which the touch signal is applied on the electrode lines on both sides of the electrode. The line intersecting the electrode line is applied with another feature of the touch signal portion VIII f. - the time point is selected as , ff as the detecting electrode, and the change of the touch signal on the touch signal line is applied to the detecting electrode line, and also; the electrode t touch signal; the applying touch signal The non-detection station of the touch circuit; all the non-detection electrodes or part of the non-detection electrodes except the detection electrode. Signal and detection flow:: Electricity: the detection electrode applies the touch pole to intersect Adding a touch signal; all the electrodes intersecting with a portion of the detecting electrodes intersecting the detecting electrical detecting electrodes or another feature of the same with the second characteristic of the second detecting 'the touch control signal is applied to the detecting electrode, and also detecting the polarity or the detecting The electrode is not;;:: all the electricity that the electrodes do not intersect 201120713 According to another of the present invention, the signal is detected and flows through the inspection net 2, and the touch detection electrode is applied to the detection electrode and the detection is performed simultaneously And the control signal; the other electrodes that are not related to the detection are applied to the other electrodes, and are all electrodes that do not intersect the detection electrode and the detection electrode, or do not intersect the detection electrode. The partial electrode of the phase, the parent of the phase, and the non-intersecting electrode are not intersected with the detecting electrode. The touch signal of the other output according to the present invention is a frequency signal of the touch circuit opposite to the electrode line. 50Kfiz, package Zero amplitude value is applied according to the amplitude of the touch signal applied on the other electrode of the present invention: at least one of the touch signals is different. The electrode in the bit, frequency or code, the touch circuit selects the detection current The detecting electrode 22== is used as a group of detecting electrodes, and the change of the touch signal of the two or more sets of two-part electrode line detecting electrodes is selected at the same time point. "The knife detection consists of each group consisting of one or more electrode lines according to the invention. A set of detecting electrodes of the household is 8 201120713. Another electrode according to the present invention is a scanning electrode for detecting and selecting the electrode line of the touch circuit as the detecting electrode. At different time points, different parts are selected, and the other features are used to display the touch signals of the φ and Yuan, and the detection circuit of the touch circuit is less. Touching the voltage signal t to the touch signal on the other line according to the present invention, the touch circuit detects the touch, the time, the phase, the frequency of the electrode on the electrode line in the electrode number and the number of pulses: =: 'The touch circuit is to detect the difference between the various rates, to confirm the 2:: change amount or touch signal change control = i send: sign, in order to more accurately determine the number of touch lines, touch j The difference between the touch circuit electrode== quantity or the change rate of the touch signal is connected to the circuit board to calculate the touch position of the touch object between the electrode lines. Another feature of τ different m is to detect the touch signal or the location where the touch rate or the touch signal has the highest rate of change is the touched iron to detect (4) the touch signal or the touch signal change amount or the touch signal = The position where the gated value is set is the touched position' or the position where the detection, control # or touch signal change amount or the touch signal change rate is the largest and exceeds a certain value and the threshold value is the touched position. According to another feature of the invention, the electrode group 'connecting the touch control circuit on the touch substrate is two sets of orthogonal electrode groups. 201120713 The edge of the electrode line of another control circuit according to the present invention is such that the connection angle on the line substrate is greater than 2 〇. Less than 6〇. . A line, a clip of two adjacent straight lines on a fold line, in accordance with the other pole of the present invention, except for an electrode having an electronic control circuit connected to the touch substrate of the solid. (4) (4) Pole, (4)' also has a non-connected contact, two sets of intersecting another on the touch substrate, not less than another according to the present invention; disposed on different substrates. The group of intersecting electrodes is formed on the touch substrate by at least two electrodes on the different layers of the same layer, the layers and the layers 3=::: A mask electrode with an insulated and insulated electrode group. The buck line is disposed on the touch surface of the touch substrate. The control feature is connected to the non-touch surface of the touch substrate. Or a hard feature, the touch substrate is flexible. The beneficial effects of the present invention compared with the prior art are: a digital capacitive touch screen of the present resolution. At the same time, the force is applied to the screen, and the accuracy of the detection of the contact electrode between the detection electrode and the non-detection electrode is detected, and the accuracy of the determination of the contacted electrode is improved to distinguish each of the 201120713 electrode lines, realizing the digital capacitance. Touch screen. The amplitude, phase, frequency or code of the touch signal applied to each detecting electrode can also be adjusted to be different, and the amplitude, phase, frequency or code of the touch signal applied to the non-detecting electrode and the touch applied to the detecting electrode The amplitude, phase, frequency or code of the control signal can also be adjusted to be different to more precisely control the flow of the touch signal. The invention can realize a large-size capacitive touch screen. The digital capacitive touch screen of the present invention detects the difference between the change of the touch signal or the touch signal or the change rate of the touch signal on each electrode line, that is, by detecting the relative value of the touch signal between the electrode lines. To determine the touched electrode line, there is no excessive requirement on the resistance value of the electrode line. When the electrode line of the large-size touch screen becomes longer and the resistance value becomes larger, it is still possible to measure the contact between each electrode line. The relative value of the control signal is used to accurately determine the touch screen electrode' to achieve a large-size, even oversized, touch screen. Judging the condition of the touched electrode line, it can detect that the electrode line whose maximum touch signal changes and exceeds a certain threshold value is the touched electrode line, and the touch type flat panel display has a single touch. Judging the condition of the touched electrode line The electrode line whose value exceeds a certain threshold value can be changed to the touched electrode line, so that the digital capacitive touch of the present invention is multi-touch. The digital capacitive touch screen of the present invention has a simple structure, and the current display technology of the display screen and the touch screen is easy to implement, so that the touch screen has low cost and high reliability. [Embodiment] 11 201120713 In order to understand the features, contents, and advantages of the present invention, the functions of the present invention can be achieved by the following description, and the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A digital capacitive touch screen 1A as shown in FIG. 1 includes a control board 110 and a touch circuit 140$. The touch panel 11 is provided with two, and mutually orthogonal row electrode groups 12Q (having row electrode lines m, 122, ..., 12m) and column electrode groups 13 (with column electrode lines i3i, i32, ..., 13 = circuit 140 has a line touch circuit (4), a column touch circuit 142 and a judgment circuit 143, etc. Each electrode line of the row electrode group 12 () is connected to the circuit 141, and each electrode line of the column electrode group 130 is connected to the control The circuit 142, the row touch circuit 141 and the column touch circuit 142 are both 143. The touch circuit includes a line touch control circuit 142, and the touch control circuit 141 includes a touch excitation source. And the touch signal detection circuit 2: The following description includes the following other embodiments: "/ no longer subdivide the touch excitation source and the touch signal detection circuit, to _. 仃 touch circuit" or "column touch electric line" = electric and electric wide 2 ° for touch coffee 121, 12? ^ select all the electrode electrode line of the electrode group 120 to apply touch signal two all the rows of all the electricity to the county _ turn (4) on the line = Shi 1Γ 12 201120713 The same touch signal, the line of snow 攸 7攸 μ, through the various The touch of the row electrode line, 4::! II does not detect the edge of the flow L7 ^ diameter L唬, the control judgment circuit 143:! Road (4) detects that the touch signal flowing through the maximum amount of change and ί::疋The row electrode line of the threshold value is the touched electrode line, 1 second electric==°, the column electrode group 130 is touch-detected, and the column touches 1TJ to select all the column electrode lines of the column electrode group 130·13η as the column detecting electrode. At the same time, the touch signals are applied to all the columns. The touch control circuit 141 applies the same touch signal to the column electrodes of the row electrode group 120 f and applies the same touch signal to the column electrodes. Flow, change of the touch signal of each column electrode line, control judgment circuit (4). The column touch circuit 142 detects that the column electrode line whose current amount of change in the control signal is the largest and exceeds a certain threshold value is the touched electrode line. The touch circuit 140 repeatedly performs touch detection on the row electrode group 12 〇 and the column electrode group 13 :: the inter-switching 'determines the intersection of the detected touched electrode line and the touched electrode line' The position of the contact forms a digital capacitive touch screen that recognizes the m χ η touch point. The condition of the touched electrode and the line is determined, and the electrode line that detects the maximum amount of change of the touch signal and exceeds a certain threshold is detected as the touched electrode line, and the amount of change of the touch signal that is detected to pass exceeds The average value of the position-weighted touch signal change amount of the two electrode lines is the touch position, and the calculated touch position is often not at the center position of an electrode line, thereby obtaining a more accurate identification. A digital capacitive touch screen with more than m X η touch points. In order to allow the operator to touch the digital capacitive touch screen, the amount of change of the touch signal 201120713 is large enough to make the 俨+ implant to resist the interference and facilitate the measurement, so that the touch letter 5 tiger has sufficient penetrating power to touch The frequency of the touch signal output by the touch circuit to the electrode line should not be less than 5〇ΚΗζ. 9 touch detection circuit detects the touch signal on the electrode line, and the detected voltage L number ' can also be a current signal; the detected value can be amplitude, phase or frequency signal, and the detection can also be at the electrode. The number of pulses recorded by the count H in the line-to-capacitor charge and discharge period. > Judging the condition of the touched electrode line, it is also possible to detect that the electrode line whose amount of change in the touched f signal exceeds a certain threshold value is the touched electrode line', thereby allowing the digital capacitive touch screen to allow multiple simultaneous points. Touch. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A digital capacitive touch screen 1A as shown in FIG. 1 includes a touch panel 110 and a touch circuit 140$. The touch panel 11 is provided with two sets of mutually orthogonal row electrode groups 120 (having row electrode lines 121, 122. . . . . 12m) and the column electrode group 13A (the column electrode lines 131132, ..., i3n) 触控 The touch circuit 140 has a line touch circuit (4), a control circuit 142, a control, a judgment circuit 143, and the like. The electrode lines of the row electrode group 12 are connected to the row touch circuit 141, and the electrode lines of the column f group 13G are connected to the column touch circuit 142, the row touch circuit 141, and the column touch circuit 142. The connection control judging circuit 143 is connected. The touch circuit 140 simultaneously performs touch detection on the row electrode group 12A and the column electrode group 13A. The row touch circuit 141 is simultaneously selected, and all the row electrode lines m, 122, ·. . The sensing electrode is applied to all the row electrodes, and the touch signals are applied to all the row electrode lines at the same time. The column touch circuit 142 14 201120713 applies to all the column electrode lines of the column electrode group 130 and the row electrode of the row touch circuit 141. The touch signal 141 is used to detect the change of the touch signal flowing through each of the row electrode lines, and the control circuit 141 detects that the touch signal flowing through the touch circuit 141 has the largest amount of change. And the row electrode line exceeding a certain threshold value is the electrode line; the column touch circuit 142 also selects all the column electrode lines 13 of the column electrode group 13〇. . . . . As a column detecting electrode, a touch signal is applied to all of the column electrode lines, and the touch circuit 141 applies the row electrode, the sum of all the row electrode lines of the 120 and the column touch circuit 142 to the column electrode. The same touch signal is used to display the touch control circuit 142 and detect the change of the touch signal flowing through each of the column electrodes and the lines, and the control determination circuit 143 detects that the touch signal flowing through the column touch circuit 142 is the largest and exceeds A column electrode line having a (four) value is a touched electrode line. The touch circuit 14 〇 repeatedly repeats the control of the row power supply m and the column electrode group green control n by the detected touched electrode line and the touched power M = f fork point 'determines the contact position, Forming a digital capacitive touch screen that recognizes the m X η touch point. The condition of the touch electrode line may not be that the amount of change of the touch signal flowing through the electrode line that has passed the change amount t and exceeds a certain threshold value is the touched door value exceeds a certain setting = electricity = weight The center position of the flat electrode line with the change of the touch signal: the touch position is often not at the digital point of a touch point = the identification is more accurate, more than... 201120713, the beta touch detection circuit detects the touch signal on the electrode line, The detected value can be a current signal; the detected value can be amplitude or phase or frequency signal, and the detection can also be recorded by the counter during the charging and discharging period of the electrode line to the capacitor. The number of pulses. > Judging the condition of the touched electrode line, it is also possible to detect the flow of the touched L number I: the electrode line exceeding the value of the set threshold is the touched electrode line, so that the digital capacitive touch The touch screen allows for multi-touch at the same time. The third embodiment of the digital touch screen 1 as shown in FIG. 1 includes a touch panel 110 and a touch circuit 140. The touch panel 11 is provided with Two pairs of mutually orthogonal row electrode groups 120 ( The row electrode lines 121, 122, ..., 12ra) and the column electrode group 13A (the column electrode lines 131, 132, ..., 1 are added). The touch circuit 140 has a row touch circuit 141, a column touch circuit 142, and Each of the electrode lines of the row electrode group 12G is connected to the row touch circuit (4), and each electrode line of the column electrode group 13G is connected to the touch circuit 142, and the touch circuit 14 and the column touch circuit are connected. 142 are connected to the control judging circuit 143. First, the touch circuit 140 performs the touch sensing circuit 141 on the row electrode group 12 to scan, and selects the row electrode η fine, 1f. . . . . The strip electrode line of 12m is used as the row detecting electrode factory control signal, and detects the variable electrode 2 of the touch signal flowing through the strip electrode line, and the row touch circuit 141 applies the row=line of all the other non-detecting electrodes. The touch signal applied to the detecting electrode has the same contact number, and the touch control circuit 142 applies the touch signal to the detecting electrode to all the column lines. The touch signal applied to the detecting electrode is completely opposite to the circuit 143 and is detected by the touch circuit 141. == The row electrode line whose amount is the largest and exceeds a set threshold value is = pole line 'and then touch circuit 140 touches the column electrode group 130: the - electrode line in the good 132, ..., 13n is used as the column detection The electrode applies the touch money, and detects the touch (IV) of the electrode line. The same time, the column touch circuit 142 applies the touch signal applied to the detection electrode to the column electrode lines of all the other non-detection electrodes. For the same touch signal, the touch control circuit 141 applies the same touch signal to the touch electrode signal applied to the detecting electrode to all the row electrode lines, and the control judging circuit 143 detects the flow through the control circuit 142. Touch signal Of maximum and exceeds a set amount of the left foot door column electrode lines of the New York touched column electrode line. The touch circuit 14 repeatedly performs the touch detection between the row electrode group 12 〇 and the column electrode group 130, and the contact between the detected touch electrode line and the touched electrode line is determined to be touched. The dot position forms a digital capacitive touch screen that recognizes the m X η touch point. ^ When the touch signal is applied to the detecting electrode, the amplitude, phase, frequency, and amplitude, phase, and frequency of the touch signal applied to the detecting electrode of the non-detecting electrode may be adjusted to Differently, to control the flow of the touch signal more precisely. The difference between the amplitude, phase, and frequency of the touch signal applied to the detecting electrode and the touch signal applied to the non-detecting electrode may be one or two of amplitude, phase, and frequency. different. The touch detection circuit detects the touch signal on the electrode line, and the detected signal may be an electric sputum or a current signal; the detected signal may be an amplitude, a lightning phase or a frequency signal, and the detected signal may also be at the electrode line. The number of pulses recorded by the counter during the valley charge and discharge period. 1 The condition that the electrode line is touched may not be detected by the electrode line that detects the flow of the touch/change amount and exceeds a certain threshold value, and detects the change of the touch signal flowing through. The average value of the position-weighted touch signal change of the first three electrode lines exceeding the set threshold value is the touch position. The calculated touch position is often not in the middle of an electrode line, so that the identification is more accurate. More than... The digital touch screen of the touch point. Judging the condition of the touched electrode line, it is also possible to use only the electrode that passes through the test, and the electrode line whose signal change exceeds a certain threshold value is the touched electrode line, so that the digital capacitive touch screen allows simultaneous multi-touch. . In order to avoid accidental touch, the control circuit can be controlled to eliminate the control circuit. Although the detected touch signal has the largest amount of change and exceeds a certain threshold value, the touch signal has a large rate of change with time (too fast, false touch, f control signal The electrode line whose time change rate is too small (too slow to be touched) is the touched electrode line. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A digital capacitive touch screen 2 as shown in FIG. 2 includes a control board 21G and a touch circuit 24G. The touch panel 21 () is provided with two rows of electrode groups 22 相互 which are orthogonal to each other (there are row electrode lines 22i, ..., he, 22i + bu: ·, 22 〇 and column electrode group 23 〇 (with column electrode line such as, 232. . . . . 23j ' 23i + 1. . . . . 23n). The touch circuit 240 has a line 18 201120713 touch circuit 24, a column touch circuit 242, a control judging circuit 243, and the like. Each of the electrode lines of the row electrode group 220 is connected to the row touch circuit, and each electrode line of the column electrode group 230 is connected to the column touch circuit. The touch control circuit 241' and the column touch circuit 242 are connected to the control judgment circuit. 243. First, the touch circuit 240 performs touch detection on the row electrode group 22, and the touch circuit 241 scans the line electrode line 221 '222 at each time point. . . . . The 22i towel selects one electrode line as a detecting electrode to apply a touch signal, and selects another electrode line from the row electrode lines 22U1, . . . , 22m to also apply a touch signal as a detecting electrode, and respectively detects touches flowing through the two electrode lines. The control signal changes, and at the same time, the touch control circuit 241 applies the touch signals having the same amplitude, phase and frequency to the row electrode lines of all the other non-detection electrodes, and the column touch circuit 242 also applies to all the column electrode lines. Applying a touch signal having the same amplitude, phase, and frequency, the control judging circuit 243 detects the flow through the line touch circuit 241 in all the row lines 221, 222, ..., 22i, 22ι + 1, ..., 22m. The row electrode line whose touch signal changes the most and exceeds a certain threshold value is the touched electrode line; then, the touch circuit 240 performs touch detection on the column electrode group 230, and the column touch circuit 242 scans each manner. The time point is from the column electrode lines 231, 232. . . . . 23 j selects an electrode line as a detecting electrode to apply a touch signal, from the column electrode line 23j + l, ··. In the 23n, the other electrode line is also used as the detecting electrode to apply the touch signal, and respectively detects the change of the touch signal flowing through the two electrode lines, and at the same time, the column touch circuit 242 pairs all the other non-detecting electrodes. The electrode line also applies touch signals with the same amplitude, phase and frequency. The touch circuit 241 applies amplitude, phase and frequency to all the row electrode lines. 19 201120713 = same touch signal, control judgment The circuit 243 selects all of the column electrode lines 23 232, . . . , 23j, 23j + l, . . . , 23n of the column touch circuit 242 f to detect that the touch signal that flows through changes the most and exceeds a certain threshold value. The electrode line is touched. The touch circuit 24G repeatedly performs the touch detection between the pair of electrodes, and 220 and the column electrode group 230, and determines the intersection of the detected touched electrode line and the touched electrode line. The contact position 'forms a digital capacitive touch screen that recognizes the m X η touch point. Since both the touch control circuit 241 and the column touch control circuit 242 select two electrode lines as the detection electrodes at the same time, the touch detection is performed by scanning the partitions simultaneously, thereby shortening the detection of the touch points on the entire touch screen. ^When the touch signal is applied to the detecting electrode, the amplitude, phase, frequency and the amplitude, phase and frequency of the touch signal applied to the detecting electrode can be adjusted for the non-detecting electrode. The difference is to control the flow of the touch signal more precisely. The difference between the touch signal applied to the detecting electrode and the touch signal applied to the non-detecting electrode may be that the value of the field, the phase, and the frequency are different, or may be one or two different in amplitude, phase, and frequency. . Judging the condition of the touched electrode line, the electrode line that has changed the touch signal that has passed the maximum and exceeds a certain threshold value is not the touched electrode line, but only the detected touch signal changes more than a certain The electrode line that sets the threshold value of the door is the touched electrode line, allowing the touch panel display to allow simultaneous multi-touch. ° ° In order to avoid accidental touch, the control circuit can be excluded, and the line touches 20 201120713 = although the signal change amount is the largest and exceeds a certain setting of the touch signal with time; the electrode line of the touched electrode line or the touch electrode line is specifically Embodiment 5 control two: = digital capacitive touch screen _, including touch: mutual = row electrode group called row electrode two 232 ^ - Λ; 3;; 2 ^ touch circuit 241, lead ", ..., 23η) The touch circuit 24A has a row 2, a column touch circuit 242, a control judging circuit 243, and the like. Each electrode line of the group 220 is connected to the line touch circuit. For example, each electrode line of the column electrode group 23G is connected to the column touch circuit (10) control circuit 241, and the column touch circuit 242 is connected to the control judgment circuit. First, the touch circuit 240 performs touch detection on the row electrode group 220, and the touch circuit 241 scans the row electrode line 221 '222 every time point. . . . . In the 22i, an electrode line is selected as the detecting electrode to apply a touch signal, and the row electrode line 22i + 1. . . . . Another electrode line is selected in the 22m to apply a touch signal to the detecting electrode, and the change of the touch signal flowing through the two electrode lines is respectively detected, and at the same time, the row electrode of the non-detecting electrode is touched by the touch circuit 24 The line also applies touch signals having the same amplitude, phase, and frequency. The column touch circuit 242 also applies a touch signal 'control judgment circuit 243' having the same amplitude, phase, and frequency to all the column lines. The touch circuit 241 is on the row electrode line 21 201120713 221 % 999 n . , . . . . The change of the touch signal detected in 22i is at least two. The row electrode line exceeding the value of a certain setting (10) is the change of the touch signal of the judgment circuit 243 and the row electrode line 221 + 1, ..., 22m: the measurement =, :: The row electrode that exceeds a certain threshold value is a touch electrode line; then, the touch circuit 240 performs touch detection on the column electrode group 23, and the column touch circuit 242 scans each point from the point. Column electrode line 23 232 . . . . . 23j, 23j + l. . . . . 23n selects the strip electrode as the touch signal of the detecting electrode urging port, and detects the change of the touch signal flowing through the electrode line, and at the same time, the column touch circuit 242 applies the column electrode line of all the other non-detecting electrodes. The touch signal has the same amplitude, phase and frequency, and the touch control circuit 241 applies a touch signal with the same amplitude, phase and frequency to all the row electrode lines, and the control judgment circuit 243 selects the touch circuit. 242, in all of the column electrode lines 231, 232, ..., 23J-23H1, ..., 23n, detects that the column electrode line that changes the touch signal that flows the most and exceeds a certain threshold value is the touched electrode line. The touch circuit 24 repeatedly performs the touch detection between the row electrode group 22 and the column electrode group 230, and the touched electrode line and the touched electrode line are connected to each other to determine that the touch is touched. The dot position forms a digital electric valley touch screen which is defined by the row electrode line 22i and which respectively recognizes the i X n touch point and the (m_丨) n touch point in the upper and lower half areas of the touch panel 21 . When the touch signal is applied to the detecting electrode, the amplitude, phase, frequency of the touch signal applied to the non-detecting electrode and the amplitude, phase, and frequency of the touch signal applied to the detecting electrode may be adjusted to be different, so that Control the flow of touch signals more precisely. Applying touch to the detecting electrode 22 201120713 No. 1 is different from the touch signal applied to the non-detecting electrode, and may be the value of the field, the phase, the frequency, or only one of the amplitude, the phase, and the frequency. Or two different. In order to avoid accidental touch, the control circuit can be eliminated, and the touch signal detected by the touch circuit has the largest amount of change and exceeds a certain threshold, but the touch signal changes excessively with time (too fast and false touch) or The electrode line whose touch rate change rate is too small (too slow to be touched) is the embodiment. The touch panel 300 of the digital capacitive touch screen shown in FIG. 3 includes an upper substrate 310 and a lower substrate 320. The upper substrate 31 and the lower substrate 320 are bonded together by the bonding material 330. A strip electrode group 340 (with electrode lines 341, 342, ..., 34m) composed of electrode lines having straight edges is disposed on the inner surface of the upper substrate 31, and an electrode having a straight edge is disposed on the inner surface of the lower substrate 320. The strip electrode group 35 is composed of wires (having electrode lines 351, 352, ..., 35n), and the direction of the electrode group 350 is perpendicular to the direction of the electrode group 340. The electrode group 34A and the electrode group 35 are used to connect the terminals of the touch circuit, respectively, on the two perpendicular edges of the upper substrate 31A and the lower substrate 320. The touch panel 400 of the digital capacitive touch screen shown in FIG. 4 is used for the purpose of using the touch panel 400 in front of the display, so that the touch panel 400 minimizes the influence on the display effect. The substrate is a single piece of transparent 23 201120713 substrate 410. On the upper side surface of the substrate 410, a strip electrode group 42A composed of electrode lines having a broken line is provided (the electrode lines 421, 422 are provided). . . . . 42ra) 'The strip electrode group 430 (with electrode lines 431, 432, ..., 43n) composed of electrode lines whose edges are broken lines is provided on the lower surface of the substrate 410, and the direction of the center line of each electrode line of the electrode group 430 is The direction of the center line of each electrode line of the electrode group 42 is perpendicular. The angle α between two adjacent straight lines on the fold line of the electrode group 42〇 and the electrode group 43〇 is greater than 2〇. The electrode assembly 420 and the electrode group 430 are used to connect the terminals of the touch circuit, and are respectively disposed on two perpendicular edges of the substrate 410. In order to prevent the user from directly contacting the electrode group 420, an insulating layer 404 is disposed outside the electrode group 420. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 5, the touch panel 500' of the digital capacitive touch screen is used for the purpose of using the touch panel 500 in front of the display, so that the touch panel 500 minimizes the influence on the display effect. A single transparent substrate 510 is employed. A strip electrode group 52A composed of electrode lines whose edges are straight is provided on the surface of the non-touch surface of the substrate 510 (the electrode line 521 ' 522 is provided). . . . . 52m) and strip electrode group 530 (with electrode lines 531, 532. . . . . 53n), the electrode group 520 and the electrode group 530 are on different layers, and the electrodes of the electrode group 520 and the electrode group 530 are separated by an insulating layer 54?. In order to use the touch panel 500 in front of the display, the touch panel 5 has similar transmittance as much as possible, and the area on the surface of the substrate 51 that is not covered by the projection of the electrode group 520 and the electrode group 530 is in the electrode group 52. The same layer of tantalum is provided with a dispersion electrode group 550. The electrode group 52 〇 each electrode line 24 201120713 = line = direction and the electrode group 53G each electrode line center line electrode group 52 〇 and the electrode group is used to connect the touch circuit before the knives are disposed on the substrate 510 Two vertical edges are on each other. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The touch panel of a digital capacitive touch screen shown in FIG. J is used for the purpose of using the touch panel 600 in front of the display, so that the touch panel can minimize the influence on the display effect. The substrate uses a single transparent substrate 610. a substrate (4) non-touch surface-side surface is provided with a strip electrode group 62〇621' 622, ..., 62m) composed of electrode lines having straight edges, and a strip electrode group 630 (with electrode lines 631", 632, ..., 63n), the electrode group 620 and the electrode group 30 are on different layers, and the electrodes of the electrode group 62G and the electrode group 630 are separated by an insulating layer 64. For the touch panel 600 to be used in front of the display, touch The control panel 6 has a similar transmittance as much as possible, and the substrate (four) surface is not covered by the projection of the electrode group 620 and the electrode group 630, and the dispersion electrode group 650 is disposed in the same layer of the electrode group (10). The direction of the center line of each electrode edge is perpendicular to the direction of the center line of each electrode line of the electrode group 63G. The electrode group 620 and the electrode group 630 are used to connect the terminals of the touch circuit, and are respectively disposed on the two sides of the substrate 610. In order to prevent interference of the touch signal on the touch panel 6 by the electrical signal in the display or in the machine, a masking electrode 660 and the electrode are additionally disposed on the inner side of the electrode group 630. Group 63 〇 (four) between the electrodes with insulation 670 25 201120713 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The touch panel of the digital capacitive touch screen shown in FIG. 7 is used for the touch panel 70G to be placed in front of the display, so that the touch panel 700 minimizes the display effect. The substrate is a single-piece transparent substrate 710. The surface of the touch surface of the substrate 710 is provided with a strip electrode group 72 722, ..., a core composed of electrode lines having straight edges, and a strip electrode (10) Line 731^73η) 'The electrode group 720 and the electrode group 73' are on different layers, and the electrode group 720 and the electrode and the group 730 are separated by an insulating layer 74. In order to prevent the user from directly contacting the electrode group. 73〇, an insulating layer 76〇 is disposed on the outer side of the electrode group (4). When the touch panel is used in front of the display, the touch panel 700 has similar transmittance as much as possible, and the substrate is not electrode, group 720 The area covered by the projection of the electric record 73〇 is provided with the dispersion electrode group 75〇 in the same layer of the electrode group 730. The direction of the center line of each electrode line of the electrode group 720 is perpendicular to the direction of the center line of each electrode line of the electrode group 73q. Electrode group 7 2 〇 and electricity The set terminals of the contact control circuit are respectively disposed on the two contact pads of the substrate 7ig to prevent interference of the touch signals on the touch panel 700 in the display device or in the machine. A mask electrode 77 is disposed on the surface of the substrate 71 on the side of the non-touch surface. The above description is in detail with reference to the specific preferred embodiments, and it should not be construed that the specific implementation of the present invention is limited; In the technical field of the present invention, a number of short-term deductions may be made or should be considered as belonging to the scope of the present invention without departing from the inventive concept. 26 201120713 [Simplified description of the drawings] Fig. 1 is a connection diagram of a specific embodiment 1 to 3 of the present invention; Fig. 2 is a connection diagram of a fourth embodiment and a fifth embodiment of the present invention; and Fig. 3 is a sixth embodiment of the present invention. 4 is a schematic structural view of a seventh embodiment of the present invention; FIG. 5 is a schematic structural view of a specific embodiment 8 of the present invention; and FIG. 6 is a schematic structural view of a specific embodiment 9 of the present invention; It is a schematic structural view of a tenth embodiment of the present invention. 27 201120713 [Key component symbol description] 10 (h digital capacitive touch screen; 110: touchpad; 120: row electrode group; 130: column electrode group; 140: touch circuit; 141: line touch circuit; 142 : column touch circuit; 143: control judgment circuit; 200: digital capacitive touch screen; 210: touch panel; 220: row electrode group; 230: column electrode group; 240: touch circuit; 241: line touch Circuit; 242: column touch circuit; 243: control judgment circuit; 3 0 0: touch panel; 310: upper substrate; 320: lower substrate; 3 3 0: dry matter; 340: electrode group, 3 5 0: Electrode group, 400 0: touchpad; 410: substrate; 28 201120713 420: electrode group; 4 3 0: electrode group, 440: insulating layer; 5 0 0: touch pad; 510: substrate; 520: electrode group 5 3 0 : electrode group; 540: insulating layer; 5 5 0 : dispersed electrode group; 600: touch pad; 610: substrate; 620: electrode group; 630: electrode group; 640: insulating layer; 6 5 0: Dispersing electrode group; 6 6 0: mask electrode; 670: insulating layer; 700: touch panel; 710: substrate; 720: electrode group; 730: electrode group; 740: insulating layer; 7 5 0: dispersed electrode group; 760: absolutely Layer; and 770: 29 the mask electrode.