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A 29139twf.doc/n 九、發明說明： 【發明所屬之技術領域】 本發明是有關於-種適用於電容式觸控面板的感測裝 置，且特別是有關於一種用於感測電容式觸控面板可減少 偵測訊號線數量的感測裝置。 【先前技術】 隨著科技不斷地進步，電子資訊產品除了朝著更輕、 更薄的方向前進之外’進-步提供了更友善的人機界面， 帶給使用者莫大的便利。人機界面包含了輸出界面和輸入 界面’扮演使用者和這些電子資訊產品之間的橋樑。液晶 面板的發明，擁有質輕易於攜帶、體積小而稀空間的優 勢，並逐漸取代傳統輸出界面所常使用的映像管顯示器。 伴隨著液晶面板的使用’以往人機界面中的輸人界面°，如 滑鼠、鍵盤等裝置也被觸控式面板取代。 其中電容式觸控面板由於具有準確定位的優勢，因 被大量_於現有電子資訊產品之巾。絲式觸控面柄 含多個感測單元’以_方式_，觸_片用於感 電容式觸控面板被觸碰的狀態。感測晶片利 ： 號線連制制單講關各行或各列，每 線連接至該行或該列的每一個感測單元的一端或另一^ 當手指觸碰到該行或該列的任一感測單元時，手 電將使被觸碰的感測單元發生電位變化，而感測=片袭 201019193 29139twf.doc/n 偵測這些偵測訊號線所傳輸的偵測訊號，得知觸控面板被 觸碰的位置。 由於液晶螢幕的尺寸不斷地加大，電容式觸控面板的 解析度也隨之提升，以便提供更加準確的定位能力。這意 味著電容式觸控面板將會具備更大的感測單元陣列，亦即 必須使用更多的偵測訊號線來傳輸這些感測單元所傳出的 感測訊號。在現有技術中，感測晶片被接合（bonding)於 _ 液晶面板上，而越多的偵測訊號線代表著需要更多的感測 晶片。這將導致成本的增加，以及提高在電容式觸控面板 上的電路佈局（layout)難度，同時在面板的設計上也必 須提供更多的空間以容納這些感測晶片。 【發明内容】 本發明的目的在於提供一種電容式觸控面板的感測裝 置，在感測電容式觸控面板的觸碰狀態時，可降低用以偵 測電容式觸控面板所需的偵測訊號線數量。 • 本發明提供一種電容式觸控面板的感測裝置，其中此 電容式觸控面板具有多個以陣列方式排列而成的感測單 70。^感測裳置包括第一感測晶片、第二感測晶片、第— ^擇單元以及第二選擇單元。第一感測晶片用以序列提供 夕個第掃描訊號以及多個第一偵測訊號。第二感測晶片 的運作與第—感測晶片同步，用以序列提供多個第二掃描 桌號以及夕個弟二偵測訊號。第一選擇單元耗接至第—感 /貝Jaa片用以於接收到第i個第一掃描訊號時，同時將這 6 29139twf.doc/n 201019193 _________f4 些第一偵測訊號提供給m行感測單元。苴中丨為正敕數， 而m為大於等於2的正整數。第二選擇單元搞接^二感 測晶片，用以於接收到第』個第二掃描訊號時，同時將這 些第二摘測訊號提供給與m行相交錯的n列感測單元；苴 中η為大於等於2的正整數。 於本發明的-實施例中，第一選擇單元包括多個第一 電晶體’每m個第-電晶體為相同群組。其中第土個群組 φ ㈣-電晶體的閘極用以同時接收第i個第—掃描訊號， 第i個群組的第-電晶體的第—端用以各別接收這些第一 偵測訊號，而第i個群组的第—電晶體的第二端各別輕接 至m行感測單元。 於本發明的-實施例中，第二選擇單元包括多個第二 電晶體，每η個第二電晶體為相同群組。其中第』個群組 ^第二電晶體的閘極用以同時接收第】個第二掃描訊號， j個群組的第二電晶體的第—端用以各別接收這些第二 偵測訊號，而第j個群組的第二電晶體的第二端各別辆接 至n列感測單元。 =本發_-實關中，這些第一制訊號在第i個 第婦"描訊號致能的期間為週期性的訊號。 $本發明的-實施例中，這些第二侧訊號在第』個 弟一掃描訊號致能的期間為週期性的訊號。 於本發明的-實施例中，其中第一感測晶片包括 :描訊號產生單元以及第-處理單元1„掃插訊 ^用以序列產生這些第-掃描訊號。第—處理單元輕接 201019193 auU〇wu,4 29139twf.doc/n 至第一掃描訊號產生單元以及這些感測單元，用以控制第 一掃描訊號產生單元的運作，並且產生這些第一偵測訊號 用以分析出這些感測單元是否被觸碰。 於本發明的一實施例中，其中第一掃描訊號產生單元 為掃描驅動晶片。 於本發明的一實施例中，其中第一掃描訊號產生單元 由多個移位暫存器所組成。 於本發明的一實施例中，其中第二感測晶片包括第二 掃描訊號產生單元以及第二處理單元。第二掃描訊號產生 單元用以序列產生這些第二掃描訊號。第二處理單元耦接 至第二掃描訊號產生單元以及這些感測單元，用以控制第 二掃描訊號產生單元的運作’並且產生這些第二偵測訊號 用以分析出這些感測單元是否被觸碰。 於本發明的一實施例中’其中第二掃描訊號產生單元 為掃描驅動晶片。 於本發明的一實施例中，其中第二掃描訊號產生單元 由多個移位暫存器所組成。 於本發明的一實施例中，其中第一選擇單元與第二選 擇單元為製作在電容式觸控面板的下基板，並透過軟式印 刷電路板與這些感測單元連接。 印於本發明的一實施例中，其中第一選擇單元與第二選 擇單元為製作在電容式觸控面板的上基板。 _本發明提供一種電容式觸控面板的感測裝置，由第一 感測晶片和第二感測晶片同步產生多個掃描訊號和多個侦 $ 201019193 74 29139twf.doc/n 測訊號，並將其輸出至第一選擇單元和第二選擇單元。其 中掃描訊號用於控制第一選擇單元和第二選擇單元輪出j貞 測訊號’用以接收感測早元的觸碰狀態。掃描訊號·依序致 使第一選擇單元和第二選擇單元對感測單元陣列的°多行或 多列的感測單元發出偵測訊號’達到將用於感測電容式觸 控面板所需的偵測訊號線數量減少的目的。 為讓本發明之上述特徵和優點能更明顯易懂，下文特 舉較佳實施例，並配合所附圖式，作詳細說明如下。 【實施方式】 圖1繪示為本發明一實施例之電容式觸控面板的感測 裝置電路圖。請參照圖1，感測裝置1〇〇至少包含感測晶 片101、感測晶片107、選擇單元1〇3、選擇單元1〇5。電 容式觸控面板109包含多個感測單元，以陣列方式排列組 成（陣列並不限定於正方形，可以是任意的四方形）。在 本實施例中’電容式觸控面板109以16 (C1行〜C16行） *16 (R1列〜R16列）陣列排列的感測單元代表說明之。此 16*16陣列並非用以限定本發明，所屬領域的技術人員應 可藉由本實施例的說明，將本發明應用於不同的感測單元 陣列（例如 8*12、16*16)。 感測晶片101至少包含處理單元301以及掃描訊號產 生單元303，其中處理單元3〇1耦接至掃描訊號產生單元 303和選擇單元103’而掃描訊號產生單元3〇3耦接至選擇 單元103。處理單元301用於產生控制訊號CSi以及偵測 201019193 74 29139twf.doc/n Λ號MHVt4。當掃描訊號產生單元3〇3接收到控制訊號 cSi’同時依序產生掃描訊號Si〜S4並輸出至選擇單元 選擇單元103至少包含電晶體Qi〜Qi6，其中每4個電 晶體為一群組（如Q广Q4、Q5〜Q8)。在此並不限定於以4 個電晶體為一群組，可依照實際需求和規劃，將電容式觸 控面板109的行數作適宜的分組，並對應地調整感測晶片 1〇1的掃描訊號數量和偵測訊號數量。 _ Μ參照圖電晶體Ql〜Q4的閘極耦接至感測晶片101 ，掃描訊號產生單元303,用以同時接收掃描訊號^。電 晶體（5广(34的源極各別耦接至感測晶片101的處理單元 301，用以接收偵測訊號M广M4。電晶體Qi〜Q4的汲極各 ，耦接至C1行〜C4行的全部感測單元。依據本實施例的 說明，本領域之技術人員應可類推至具有閘極、汲極以及 源極之電晶體，如NM〇s薄膜電晶體、金氧半場效電晶體 等’或其他具有等效功能的硬體組件、電路，以及相關的 顯不器應用’如有機發光二極體（〇rganic Light Emitting 籲 ’ OLED)顯示器.、以低溫多晶珍.（l〇w temperature poly silicon ’ LTPS )或非晶石夕（amorph〇us silicon，a-si) 製程所製作的顯示器等。選擇單元103在接收到掃描訊號 Si時，掃描訊號Si同時導通電晶體仏〜卩*，致使偵測訊號 經由電晶體Q^Q4的汲極輸出至電容式觸控面板 1〇9的C1行〜C4行’用以偵測C1行〜C4行的感測單元是 否被觸碰。 29139twf.doc/n 201019193 A & /4 在此雖僅以電晶體Q^Q4為代表說明之，本發明領域 之技術人員，可依照本實施例的說明，將電晶體Qi〜(^與 感測晶片101以及電容式觸控面板109之間的耦接路徑和 其功效，類推至電晶體Q5〜Q10，故在此不再贅述。以下僅 以感測單70 G!為例說明之。當掃描訊號Si導通電晶體 Ql，且感測單兀0!接收到偵測訊號^^時，如果感測單元 被觸碰，將導致處理單元3〇1偵測到偵測訊號μ〗的電 ❹ 壓準位發生變動，得以判斷出感測單元仏被觸碰。 於本實施例中，掃描訊號產生單元303可以是掃描驅 動晶片，亦可以由多個移位暫存器所組成。圖2A為本實 施=之掃瞄訊號產生單元3〇3的示意圖，其中掃瞄訊號產 生單元303至少包含移位暫存器SRi〜SR4。移位暫存器 SR广SR*耦接至處理單元3(U，用以接收控制訊號CSi。本 發明領域之技術人員應知移位暫存器的運作方式，以及尚 包含其他控制訊號用以驅動移位暫存器，在此僅以移位暫 存器的功效作為說明。當處理單元3〇1輸出控制訊號CSi 镰 到捧瞄訊號產生單元3〇3時，請參照圖2A，移位暫存器 SRi〜SR4根據控制訊號CSi依序產生掃瞄訊號Si〜S4。本發 明領域之技術人員可依照本實施例說明，應用於不同感測 單兀陣列的電容式觸控面板，並依據其行數的分組來修改 對應的移位暫存器數目。此外，亦可使用任何可接收控制 訊號CS!而發出週期性掃描訊號的組件或電路，來替代掃 描訊號產生單元303的功效。 11 20^9193,震福_ 抑感測晶片l〇7至少包含處理單元3〇5以及掃描訊號產 生單凡307 l其中處理單元3〇5耦接至掃描訊號產生單元 3j5和選擇單元1〇5’而掃描訊號產生單元3〇7耦接至選擇 單105。處理單το 305用於產生控制訊號Cs2以及偵測 訊號Nl〜N4°當掃描訊號產生單元307接收到控制訊號 CS2’同時依序產生掃描訊號Τι〜τ4並輸出至選擇單元丨仍。 選擇單元105至少包含電晶體Q17〜Q32，其中每4個 魯 電晶體為-群組（如q17〜Q2〇、^〜q24)。在此並不限定 =以4個電晶體為—群組，可依照實際需求和規劃，將電 容式觸控Φ板1G9的舰作適宜的分組，並對應地調整感 測晶1 107的掃描訊號數量和偵測訊號數量。 清參照圖卜電晶體Qn〜Q2〇的閘極搞接至感測晶片 曰的掃描訊號產生單元307，用以同時接收掃描訊號Τι。 包晶體Qn〜Q2〇的源極各別耦接至感測晶片1〇7的處理單 元305 ’用以接收偵測訊號。電晶體a?〜的汲極 各_接至R1列〜R4 _全部感測單元。依據本實施例 镰的說明’本領域之技術人貞射齡至具有_、没極以 及，極之電晶體，如NMOS薄膜電晶體、金氧半場效電晶 體等:或其他具有等效功能的硬體組件、電路，以及相關 的顯示ϋ應用，如有機發光二極體（0rganieLightEmittingA 29139twf.doc/n IX. Description of the Invention: [Technical Field] The present invention relates to a sensing device suitable for a capacitive touch panel, and more particularly to a method for sensing capacitive touch The control panel reduces the number of sensing devices that detect the number of signal lines. [Prior Art] With the continuous advancement of technology, electronic information products have provided a more friendly human-machine interface in addition to moving in a lighter and thinner direction, which brings great convenience to users. The HMI contains an output interface and an input interface that acts as a bridge between the user and these electronic information products. The invention of the liquid crystal panel has the advantage of being easy to carry, small and thin, and gradually replaces the image tube display commonly used in the conventional output interface. With the use of the liquid crystal panel, the input interface in the human-machine interface, such as a mouse and a keyboard, has been replaced by a touch panel. Among them, capacitive touch panels have a large number of existing electronic information products because of their advantages of accurate positioning. The wire touch surface handle includes a plurality of sensing units ‘method _, and the touch slab is used to sense that the capacitive touch panel is touched. Sensing wafers: The number line is connected to each row or column, each line is connected to one end of the sensing unit of the row or column or the other ^ when the finger touches the row or column In any of the sensing units, the flashlight will cause a potential change in the touched sensing unit, and the sensing = slice attack 201019193 29139twf.doc/n detects the detected signals transmitted by the detected signal lines, and learns to touch The position where the control panel is touched. As the size of the LCD screen continues to increase, the resolution of the capacitive touch panel is also increased to provide more accurate positioning capabilities. This means that the capacitive touch panel will have a larger array of sensing units, that is, more sensing signal lines must be used to transmit the sensing signals from these sensing units. In the prior art, the sensing wafer is bonded to the liquid crystal panel, and the more detected signal lines represent the need for more sensing wafers. This will result in increased cost and increased circuit layout on capacitive touch panels, while at the same time providing more space in the design of the panels to accommodate these sensing wafers. SUMMARY OF THE INVENTION An object of the present invention is to provide a sensing device for a capacitive touch panel, which can reduce the detection required for detecting a capacitive touch panel when sensing the touch state of the capacitive touch panel. The number of telecommunication lines. The present invention provides a sensing device for a capacitive touch panel, wherein the capacitive touch panel has a plurality of sensing sheets 70 arranged in an array. The sensing skirt includes a first sensing wafer, a second sensing wafer, a first selection unit, and a second selection unit. The first sensing chip is configured to sequentially provide the first scanning signal and the plurality of first detecting signals. The operation of the second sensing chip is synchronized with the first sensing chip for sequentially providing a plurality of second scanning table numbers and a second detecting signal. The first selection unit is connected to the first sense/before the Jaa slice for receiving the first i-th scan signal, and simultaneously providing the first detection signal of the 6 29139 twf.doc/n 201019193 _________f4 Measurement unit.苴 is a positive number, and m is a positive integer greater than or equal to 2. The second selection unit is configured to receive the second sensing chip, and when the second scanning signal is received, the second sampling signals are simultaneously provided to the n columns of sensing units interleaved with the m rows; η is a positive integer greater than or equal to 2. In an embodiment of the invention, the first selection unit comprises a plurality of first transistors 'every mth of the first transistors are of the same group. The gate of the first group φ (four)-transistor is used to simultaneously receive the ith first scan signal, and the first end of the first transistor of the i-th group is used to receive the first detection separately The signal, and the second end of the first transistor of the i-th group is lightly connected to the m-line sensing unit. In an embodiment of the invention, the second selection unit comprises a plurality of second transistors, each n second transistors being the same group. The gate of the second transistor ^ is used to receive the second scan signal at the same time, and the first end of the second transistor of the j groups is used to receive the second detection signals separately And the second ends of the second transistors of the jth group are respectively connected to the n columns of sensing units. = In this issue, the first signal is a periodic signal during the period when the i-th woman's code is enabled. In the embodiment of the invention, the second side signals are periodic signals during the period in which the first scan of the scan signal is enabled. In the embodiment of the present invention, the first sensing chip includes: a tracing signal generating unit and a first processing unit 1 to scan the signal to generate the first scanning signals. The first processing unit is lightly connected to 201019193 auU. 〇wu, 4 29139 twf.doc/n to the first scanning signal generating unit and the sensing units for controlling the operation of the first scanning signal generating unit, and generating the first detecting signals for analyzing the sensing units In an embodiment of the invention, the first scan signal generating unit is a scan driving chip. In an embodiment of the invention, the first scanning signal generating unit is configured by a plurality of shift registers. In an embodiment of the invention, the second sensing chip includes a second scanning signal generating unit and a second processing unit. The second scanning signal generating unit is configured to sequentially generate the second scanning signals. The unit is coupled to the second scan signal generating unit and the sensing units for controlling the operation of the second scan signal generating unit and generating the second detection In an embodiment of the invention, the second scanning signal generating unit is a scanning driving chip. In an embodiment of the invention, the second scanning signal is generated. The unit is composed of a plurality of shift registers. In an embodiment of the invention, the first selection unit and the second selection unit are formed on the lower substrate of the capacitive touch panel and are transmitted through the flexible printed circuit board. The sensing unit is connected. In an embodiment of the invention, the first selecting unit and the second selecting unit are formed on the upper substrate of the capacitive touch panel. The invention provides a capacitive touch panel. The detecting device generates a plurality of scanning signals and a plurality of detecting signals from the first sensing chip and the second sensing chip in synchronization, and outputs the signals to the first selection unit and the second selection unit. The scanning signal is used to control the first selection unit and the second selection unit to rotate the signal to receive the touch state of the sensing element. The scanning signal sequentially causes the first selection. The unit and the second selection unit send a detection signal to the sensing unit of the multi-row or multi-column of the sensing unit array to achieve the purpose of reducing the number of detection signal lines required for sensing the capacitive touch panel. The above features and advantages of the present invention will be more apparent from the following description of the preferred embodiments of the invention. The circuit diagram of the sensing device of the capacitive touch panel. Referring to FIG. 1 , the sensing device 1A includes at least a sensing chip 101, a sensing chip 107, a selection unit 1〇3, and a selection unit 1〇5. The panel 109 includes a plurality of sensing units, which are arranged in an array (the array is not limited to a square, and may be any square). In the embodiment, the capacitive touch panel 109 is 16 (C1 rows to C16 rows). *16 (R1 column ~ R16 column) The sensing unit arranged in the array represents the description. This 16*16 array is not intended to limit the invention, and those skilled in the art should be able to apply the invention to different sensing unit arrays (e.g., 8*12, 16*16) by the description of the present embodiment. The sensing chip 101 includes at least a processing unit 301 and a scanning signal generating unit 303. The processing unit 301 is coupled to the scanning signal generating unit 303 and the selecting unit 103', and the scanning signal generating unit 303 is coupled to the selecting unit 103. The processing unit 301 is configured to generate the control signal CSi and detect the 201019193 74 29139twf.doc/n nickname MHVt4. When the scan signal generating unit 3〇3 receives the control signal cSi′, the scan signals Si to S4 are sequentially generated and output to the selection unit. The selection unit 103 includes at least the transistors Qi to Qi6, wherein each of the four transistors is a group ( Such as Q Guang Q4, Q5 ~ Q8). Here, it is not limited to using four transistors as a group, and the number of rows of the capacitive touch panel 109 can be appropriately grouped according to actual needs and planning, and the scanning of the sensing wafer 1〇1 can be adjusted correspondingly. Number of signals and number of detection signals. The gates of the reference transistors 102 to Q4 are coupled to the sensing chip 101, and the scanning signal generating unit 303 is configured to simultaneously receive the scanning signal ^. The transistor (5 is widely coupled to the processing unit 301 of the sensing chip 101 for receiving the detection signal M wide M4. The poles of the transistors Qi to Q4 are each coupled to the C1 row~ All of the sensing units of row C4. According to the description of the embodiment, those skilled in the art should be able to analogize to a transistor having a gate, a drain, and a source, such as a NM〇s thin film transistor, a gold oxide half field effect transistor. Crystals and other 'or other equivalent hardware components, circuits, and related display applications, such as organic light-emitting diodes (OLED) display, low temperature polycrystalline. (l 〇w temperature poly silicon ' LTPS ) or a display made by amorphous silicon (a-si) process, etc. When the scanning unit Si is received by the selecting unit 103, the scanning signal Si is simultaneously turned on.卩*, causing the detection signal to be output via the drain of the transistor Q^Q4 to the C1 line to the C4 line of the capacitive touch panel 1〇9 to detect whether the sensing unit of the C1 line to the C4 line is touched 29139twf.doc/n 201019193 A & /4 Here only the transistor Q^Q4 By way of example, those skilled in the art can, based on the description of the embodiment, classify the coupling path between the transistors Qi1 and the sensing wafer 101 and the capacitive touch panel 109 and their functions to The transistors Q5~Q10 are not described here. The following is only an example of the sensing unit 70 G!. When the scanning signal Si is turned on, the crystal Q1 is turned on, and the sensing unit 兀0 receives the detecting signal ^^ If the sensing unit is touched, the processing unit 3〇1 detects that the power level of the detection signal μ is changed, and it is determined that the sensing unit is touched. In this embodiment, The scan signal generating unit 303 may be a scan driving chip or may be composed of a plurality of shift registers. FIG. 2A is a schematic diagram of the scan signal generating unit 3〇3 of the present embodiment, wherein the scan signal generating unit 303 At least the shift register SRi~SR4 is included. The shift register SR is coupled to the processing unit 3 (U for receiving the control signal CSi. Those skilled in the art should know the shift register How it works, and other control signals to drive the shift The register is only described by the function of the shift register. When the processing unit 301 outputs the control signal CSi 捧 to the rush signal generating unit 3 〇 3, please refer to FIG. 2A, the shift register The SRi~SR4 sequentially generates the scan signals Si~S4 according to the control signal CSi. The person skilled in the art can apply to the capacitive touch panel of different sensing single-array arrays according to the embodiment, and according to the number of rows thereof Grouping to modify the corresponding number of shift registers. In addition, any component or circuit that can receive the periodic scan signal by receiving the control signal CS! can be used instead of the power of the scan signal generating unit 303. 11 20^9193, Zhenfu _ Sense sensing chip 101 includes at least processing unit 3 〇 5 and scanning signal generating unit 307 l wherein processing unit 3 〇 5 is coupled to scanning signal generating unit 3j5 and selecting unit 1 〇 5 The scan signal generating unit 3〇7 is coupled to the selection list 105. The processing unit το 305 is used to generate the control signal Cs2 and the detection signals N1 to N4. When the scanning signal generating unit 307 receives the control signal CS2', the scanning signals Τι to τ4 are sequentially generated and output to the selection unit. The selection unit 105 includes at least transistors Q17 to Q32, wherein each of the four transistors is a group (e.g., q17~Q2〇, ^~q24). It is not limited here=4 groups of transistors are used as groups, and the ships of the capacitive touch Φ board 1G9 can be appropriately grouped according to actual needs and planning, and the scanning signals of the sensing crystal 1 107 are correspondingly adjusted. Quantity and number of detection signals. The gates of the reference transistors 102n to Q2 are connected to the scanning signal generating unit 307 of the sensing chip for simultaneously receiving the scanning signals Τι. The sources of the package crystals Qn to Q2 are coupled to the processing unit 305' of the sensing chip 1 to receive the detection signal. The drains of the transistors a?~ are connected to the R1 column to the R4_all sensing units. According to the description of the present embodiment, the skilled person in the art has an age of _, 没, and a very polar transistor, such as an NMOS thin film transistor, a gold oxide half field effect transistor, or the like: or other equivalent functions. Hardware components, circuits, and related display applications such as organic light-emitting diodes (0rganieLightEmitting)
Du)de ’ 〇LED)顯示器、以低溫多晶矽（L〇wtempem恤e poly silicon ’ LTPS )或非晶石夕（am〇rph〇us silic〇n，a ) 製程所製作的顯示器等。選擇單元1〇5在接收到掃描訊號 ^時，掃描訊號Tl同時導通電晶體Qi7〜Q2〇，致使偵測訊 12 74 29139twf.doc/n 201019193Du)de ’ 〇LED) display, display made by low temperature polycrystalline silicon (e silicon temp temp e 或 或 或 或 或 或 或 或 或 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 When the selection unit 1〇5 receives the scan signal ^, the scan signal T1 simultaneously conducts the crystals Qi7~Q2〇, causing the detection signal 12 74 29139twf.doc/n 201019193
Nl〜N4經由電晶體Q 〇 j, I. -r- ^ ^ 109 „ R1 ,^R4 ,1 是否被觸碰。 用則貞測則，列的感測單元 在此雜_晶體Ql7〜Q2(^絲㈣之 =技術人員，可依照本實施例的說明，將電晶月^ 與感測^而⑽電容式崎祕⑽ Q接路^ 和其功效，齡至電晶體α〜Ω η稱接路徑 ……留- γΛ Q Q32丈在此不再贅述。以 下僅乂感測早70 G!為例說明之。當掃描訊號^導通Nl~N4 via the transistor Q 〇j, I. -r- ^ ^ 109 „ R1 , ^R4 ,1 is touched. If used, the sensing unit of the column is in this _ crystal Ql7~Q2 (^ Wire (4) = Technician, according to the description of this embodiment, the electro-crystals can be connected with the sensing and (10) capacitive-type (10) Q and its effect, the age to the crystal α ~ Ω η ......Remaining - γΛ Q Q32 is not repeated here. The following is only the sensing 70 G! As an example, when the scanning signal is turned on
體Q32 ’且感測單元Gi接收到债測訊號n4時，如果Z ㈣將_處理單元305偵測到侧訊號队 的電壓準位發生變動，得以判斷出感測私&被觸碰。 於本實施例中，掃描訊號產生單元3〇7可以是掃描驅 動晶片’亦可以由多個移位暫存器所组成。圖2Β為本實 施^之掃㈣號產生單幻。7的示意圖，其中掃猫訊號^ 生單元3〇7至少包含移位暫存器SR5〜SR8t>移位暫存器 SRs〜SRs耦接至處理單元305 ’用以接收控制訊號cs2。^ 發明領域之技術人員應知移位暫存器的運作方式’以及尚 包含其他控制訊號用以驅動移位暫存器，在此僅以移位暫 存器的功效作為說明。當處理單元3〇5輸出控制訊號CS2 到掃瞄訊號產生單元307時，請參照圖2B，移位暫存器 SR5〜SRs根據控制訊號CS2依序產生掃猫訊號Τι〜Τ4。本發 明領域之技術人員可依照本實施例說明，應用於不同感測 單元陣列的電容式觸控面板’並依據其列數的分組來修改 對應的移位暫存器數目。此外，亦可使用任何可接收控制 13 201019193” 29139twf.doc/n 訊號CS2而發出週期性掃描訊號的組件或電路，來替代婦 描訊號產生單元307的功效。 在此’感測晶片107的運作與感測晶片1〇1是同步的。 亦即感測晶片101依序產生掃描訊號和偵測訊銳 厘!〜％4’對電容式觸控面板1〇9其中的4行感測單元進行 感測動作的同時’感測晶片107也依序產生掃描訊號& 〜I和偵測訊號化〜川，對電容式觸控面板1〇9其中的4 列感測單元進行感測動作’藉以經由交叉比對，得出被觸 碰的感測單元的正確位置。 因此，感測晶片101可以較少數量的偵測訊號線，藉 由選擇單元1〇3擴展以偵測電容式觸控面板1〇9的觸碰狀 態。同理，感測晶片107可以較少數量的偵測訊號線，藉 由選擇單元105擴展以偵測電容式觸控面板109的觸碰狀 態。在先前技術所揭示的習知技術中，要控制一個丨6* 16 陣列的感測單元，需要16條偵測訊號線用於感測16行的 感測單元，以及16條偵測訊號線用於感測16列的感測單 兀。而在本實施例中，僅需以4條掃描訊號線和4條偵測 號線用於感測16行的感測單元（減少8條訊號線），以 及4條掃描訊號線和4條偵測訊號線用於感測16列的感測 單元（減少8條訊號線）。請參照表丨，亦即依據本實施 例所述，可達成減少用於偵測電容式觸控面板109的觸控 狀態的债测訊號線’尤其在電容式觸控面板1〇9的感測單 凡陣列越大時，可節省越多用於偵測的訊號線。 14 201019193^ 29139twf.doc/n 表1電容式觸控面板109的訊號線數量 感測單元陣列 先前技術 本實施例 行 列 行 列 8*8 8 8 2+4 2+4 16*16 16 16 4+4 4+4 32*32 32 32 8+4 8+4 由前述可知，感測晶片1〇1產生掃描訊號S!〜S4和偵 測訊號用以依序感測電容式觸控面板109的感測. 單元是否被觸碰。在本實施例中，感測晶片1〇1依序產生 的偵測訊號為週期性訊號。請參照圖3A，當掃描 訊號Si〜S4被依序產生時，偵測訊號Mi〜M4同時被依序經 由選擇單元103輸出至電容式觸控面板109。首先，當掃 描訊號S!輪出為高準位（ievei )時，偵測訊號 循序式（sequential)輸出高準位。接著當掃描訊號&為低 準位，而掃描訊號&為高準位，此時偵測訊號m〗〜m4維 持循序式輸出。本發明領域之技術人員可以此類推至 訊號S3〜s4。 ，3B為本發明之另一實施例。請參照圖3B，其中偵 測訊號方為交錯式（inte]rlaeed)，彳貞測 為—組同步準位訊號，而_訊號M2、M4'為 位訊號1兩__錢準位為反相輸出。當掃描 位）lVlS3為高準位時’偵測訊號以1、〜3同步輸出高準 訊號时輸㈣雜。縣麵測 出高準準位時，偵測訊號M2、W同步輸 ^田掃描訊號S1、S3為低準位，而掃描訊 15 29139twf.doc/n 201019193 號S2、S4為局準位時’偵測sfL號Mi〜M4維持上述^的交錯 式輸出方式。 在圖3A〜3B中雖以感測晶片101和選擇單元1〇3做為 代表說明之，但本發明領域之技術人員應可依照本實施例 的說明’類推至感測晶片107和選擇單元此外，依 據本實施例的說明’本領域之技術人員應知债測訊號 Μι〜M4和彳貞測訊號N广N4可以是任意準位組合的週期性訊 號。 本領域之技術人員應知液晶面板更包含其他組件，'例 如液晶面板驅動晶片以及韌體程式等，但以下僅針對與本 發明相關的部分來做說明。在本實施例中，觸控面板建置 於液晶面板上，而液晶面板至少包含上基板Βι與下基板 %。請參照圖4A’上基板^為彩色濾光片（CFglass)， 下基板Bz為液晶陣列（array glass)。感測裝置1〇〇包含 選擇單兀103與選擇單元105。其中感測裝置1〇〇接合在 下基板I ’電容式觸控面板1〇9置放於上基板&，選擇單 το 103與選擇單元1〇5經由軟式印刷電路板Fpc (但不限 定於此述連接方式）耦接至電容式觸控面板109。 下基板在習知技術中多用於接合液晶面板的相關 ，體兀件和電路’如圖4A中的驅動晶片311用於驅動液 晶面板，接合在下基板B2。圖4B提供本發明之另一實施 例’其中圖4B的部分内容可參照圖4A的相關說明實施 之’故相同的部分在此不再贅述。請參照圖4B，其中感測 16 201019193 29139twf.doc/n 裝置100可接合在上基板仏，以使選擇單元103與選擇單 元105直接耦接至電容式觸控面板109。 綜上所述’本發明提供一種電容式觸控面板的感測裝 置’由苐一感測晶片和第二感測晶片同步產生多個掃描訊 號和多個偵測訊號，並將其輸出至第一選擇單元和第二選 擇單元。其中掃描訊號用於控制第一選擇單元和第二選擇 單元輸出偵測訊號’用以接收感測單元的觸碰狀態。掃描 訊號依序致使第一選擇單元和第二選擇單元對感測單元陣 列的多行或多列的感測單元依序發出偵測訊號，達到將用 於感測電容式觸控面板所需的偵測訊號線數量減少的目 的。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明’任何所屬技術領域中具有通常知識者，在不 脫離本發明之精神和範圍内，當可作些許之更動與潤飾， 因此本發明之保護範圍當視後附之申請專利範圍所界定者 為準。 ❿ 【圖式簡單說明】 圖1繪不為本發明一實施例之電容式觸控面板的 裝置示意圖。 ‘ —圖2A〜2B纟t示為本發明—實施例之翻訊號產生』 元示意圖。 圖3A犯繪不為本發明一實施例之偵測訊號時序圖 圖4A繪示為本發明一實施例之選擇單元接合示意圖 圖4B繪示為本發明一實施例之選擇單元接合示意圖 17 201019193 x jk \y /4 29139twf.doc/n — 【主要元件符號說明】 100 :感測裝置 101、107 :感測晶片 103、105 :選擇單元 109 :電容式觸控面板 301、305 :處理單元 303、307 :掃描訊號產生單元 311·驅動晶片 • Bi :上基板 B2 '·下基板 C广C16 :行 CSi、CS2 :控制訊號 FPC :軟式印刷電路板 :感測單元 M^IVU、Ni〜N4 :偵測訊號 Q广Q32 :電晶體 參 R广Rl6 :列When the sensing unit Gi receives the debt measurement signal n4, if the Z (4) detects that the voltage level of the side signal team has changed, the sensing unit 305 can determine that the sensing private & is touched. In this embodiment, the scan signal generating unit 3A7 may be a scan driving chip' or may be composed of a plurality of shift registers. Fig. 2Β produces a single illusion for the sweep (4) of the implementation. 7 is a schematic diagram of the scan cat signal generating unit 3A7 including at least the shift register SR5~SR8t> the shift register SRs~SRs is coupled to the processing unit 305' for receiving the control signal cs2. ^ Those skilled in the art will recognize the operation of the shift register and the inclusion of other control signals for driving the shift register, here only the effect of the shift register. When the processing unit 3〇5 outputs the control signal CS2 to the scan signal generating unit 307, referring to FIG. 2B, the shift register SR5~SRs sequentially generates the sweeping cat signals Τι to Τ4 according to the control signal CS2. A person skilled in the art can modify the capacitive touch panel ′ of different sensing unit arrays according to the embodiment and modify the corresponding number of shift registers according to the grouping of the number of columns. In addition, any component or circuit that can receive the periodic scan signal by receiving the control 13 201019193" 29139twf.doc/n signal CS2 can be used instead of the function of the smear signal generating unit 307. Here, the operation of the sensing chip 107 is performed. The sensing chip 101 is synchronized with the sensing chip 101. That is, the sensing chip 101 sequentially generates the scanning signal and the detection signal sharply! ~%4' performs the four rows of sensing units of the capacitive touch panel 1〇9 While sensing the action, the sensing chip 107 also sequentially generates the scanning signal & I and the detection signal, and the sensing operation of the four rows of sensing units of the capacitive touch panel 1〇9. Through the cross comparison, the correct position of the touched sensing unit is obtained. Therefore, the sensing chip 101 can have a smaller number of detected signal lines, and is expanded by the selecting unit 1〇3 to detect the capacitive touch panel. Similarly, the sensing chip 107 can detect a smaller number of detection signal lines, and the selection unit 105 expands to detect the touch state of the capacitive touch panel 109. As disclosed in the prior art. In the conventional technique, it is necessary to control a 丨6* The sensing unit of the array needs 16 sensing signal lines for sensing 16 rows of sensing units, and 16 detecting signal lines for sensing 16 columns of sensing units. In this embodiment, Only 4 scanning signal lines and 4 detection number lines are needed for sensing 16 rows of sensing units (reducing 8 signal lines), and 4 scanning signal lines and 4 detecting signal lines for sensing The 16-column sensing unit is measured (reduced by 8 signal lines). Please refer to the table, that is, according to the embodiment, the debt measuring signal for detecting the touch state of the capacitive touch panel 109 can be achieved. The line 'especially the larger the array of sensing touches of the capacitive touch panel 1〇9, the more signal lines for detection can be saved. 14 201019193^ 29139twf.doc/n Table 1 of the capacitive touch panel 109 Signal Line Number Sensing Unit Array Prior Art This embodiment is a row and column 8*8 8 8 2+4 2+4 16*16 16 16 4+4 4+4 32*32 32 32 8+4 8+4 The sensing chip 101 generates the scanning signals S!~S4 and the detecting signals for sequentially sensing the sensing of the capacitive touch panel 109. Whether the unit is touched. In the embodiment, the detection signals sequentially generated by the sensing chip 101 are periodic signals. Referring to FIG. 3A, when the scanning signals Si to S4 are sequentially generated, the detection signals Mi to M4 are simultaneously sequentially passed. The selection unit 103 outputs the capacitive touch panel 109. First, when the scan signal S! is rotated to a high level (ievei), the detection signal sequentially outputs a high level. Then when the scan signal & The low level, and the scan signal & is a high level, at this time the detection signal m〗 ~ m4 maintains a sequential output. Those skilled in the art can push to signals S3 to s4. 3B is another embodiment of the present invention. Please refer to FIG. 3B, in which the detection signal is interlaced (inte]rlaeed), and the detection is a group synchronous level signal, and the signal M2 and M4' are bit signals 1 and the __ money level is inverted. Output. When the scan bit) lVlS3 is at the high level, the detection signal is output (4) when the high-level signal is output synchronously with 1, 3, and 3. When the county level detects the high-precision level, the detection signal M2, W synchronous input field scanning signals S1, S3 are low level, and the scanning signal 15 29139twf.doc/n 201019193 S2, S4 is the board level ' The sfL numbers Mi to M4 are detected to maintain the above-described interleaved output mode. Although the sensing wafer 101 and the selection unit 1〇3 are illustrated in FIGS. 3A to 3B, those skilled in the art should be able to analogize to the sensing wafer 107 and the selection unit in accordance with the description of the present embodiment. According to the description of the embodiment, those skilled in the art should know that the debt measurement signals Μι~M4 and the measurement signal N wide N4 may be periodic signals of any combination of levels. It will be understood by those skilled in the art that the liquid crystal panel further includes other components, such as a liquid crystal panel driving chip and a firmware program, but the following is only for the parts related to the present invention. In this embodiment, the touch panel is built on the liquid crystal panel, and the liquid crystal panel includes at least the upper substrate Βι and the lower substrate 5%. Referring to Fig. 4A, the upper substrate is a color filter (CFglass), and the lower substrate Bz is an array glass. The sensing device 1A includes a selection unit 103 and a selection unit 105. The sensing device 1 is bonded to the lower substrate I'. The capacitive touch panel 1〇9 is placed on the upper substrate & the single τ 103 and the selection unit 1 〇5 are connected via the flexible printed circuit board Fpc (but not limited thereto). The connection mode is coupled to the capacitive touch panel 109. The lower substrate is commonly used in the prior art for bonding liquid crystal panels, and the body member and circuit ' as shown in Fig. 4A for driving the liquid crystal panel to be bonded to the lower substrate B2. FIG. 4B shows another embodiment of the present invention. The portion of FIG. 4B may be implemented with reference to the related description of FIG. 4A, and thus the same portions will not be described herein. Referring to FIG. 4B, the sensing device 16 can be bonded to the upper substrate 以 to directly connect the selection unit 103 and the selection unit 105 to the capacitive touch panel 109. In summary, the present invention provides a sensing device for a capacitive touch panel that generates a plurality of scanning signals and a plurality of detection signals in synchronization with a sensing chip and a second sensing chip, and outputs the same to the first A selection unit and a second selection unit. The scan signal is used to control the first selection unit and the second selection unit to output the detection signal ’ to receive the touch state of the sensing unit. The scanning signals sequentially cause the first selection unit and the second selection unit to sequentially send detection signals to the sensing units of the plurality of rows or columns of the sensing unit array, so as to be required for sensing the capacitive touch panel. The purpose of detecting the number of signal lines is reduced. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a device of a capacitive touch panel according to an embodiment of the present invention. ′′—Fig. 2A to 2B纟t show the schematic diagram of the invention. FIG. 3A is a timing diagram of a detection signal according to an embodiment of the present invention. FIG. 4A is a schematic diagram of a selection unit engagement according to an embodiment of the present invention. FIG. 4B is a schematic diagram of a selection unit engagement according to an embodiment of the present invention. Jk \y /4 29139twf.doc/n - [Description of main component symbols] 100: sensing devices 101, 107: sensing wafers 103, 105: selection unit 109: capacitive touch panels 301, 305: processing unit 303, 307: scan signal generating unit 311·drive wafer • Bi: upper substrate B2 '·lower substrate C wide C16: row CSi, CS2: control signal FPC: flexible printed circuit board: sensing unit M^IVU, Ni~N4: Detect Test signal Q wide Q32: transistor reference R wide Rl6: column
Si〜S4 :掃描訊號 SRr-SR8 :移位暫存器 T广T4 ·掃描訊號 18Si~S4: Scan signal SRr-SR8: Shift register T-T4 · Scan signal 18