TWI543033B - Touch panel and touch detection method of the same - Google Patents

Touch panel and touch detection method of the same Download PDF

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TWI543033B
TWI543033B TW104100312A TW104100312A TWI543033B TW I543033 B TWI543033 B TW I543033B TW 104100312 A TW104100312 A TW 104100312A TW 104100312 A TW104100312 A TW 104100312A TW I543033 B TWI543033 B TW I543033B
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touch
touch unit
values
value
voltage values
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TW201612700A (en
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張燦坤
魏財魁
王萬秋
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宸鴻科技(廈門)有限公司
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Description

觸控面板及其偵測方法 Touch panel and detection method thereof

本發明是有關於一種觸控技術,且特別是有關於一種觸控面板及其偵測方法。 The present invention relates to a touch technology, and in particular to a touch panel and a method for detecting the same.

觸控面板由於輸入方式的直覺與便利性,而與顯示面板結合,並廣泛地應用在許多手持式電子裝置例如智慧型手機及平板電腦上。目前的觸控技術中,電容式觸控面板是最主流的觸控技術。於部份技術中,電容式觸控面板會在初始時先進行掃瞄偵測,並在獲得基準值後,持續地掃瞄以進行偵測。其偵測到的數值會和固定的這組基準值進行比較以測得實際觸控的位置。 The touch panel is combined with the display panel due to the intuition and convenience of the input mode, and is widely used in many handheld electronic devices such as smart phones and tablets. Among the current touch technologies, capacitive touch panels are the most popular touch technology. In some technologies, the capacitive touch panel performs scan detection at the initial stage and continuously scans for detection after obtaining the reference value. The detected value is compared with a fixed set of reference values to determine the actual touch position.

然而在觸控面板未啟動時,可能有些物體,例如使用者的手,已先置於觸控面板的表面。因此在觸控面板啟動後,經過掃瞄而獲得的基準值將會由於手的影響而無法獲得準確的數值。在觸控面板進行實際的觸控偵測時,將無法正確的進行判斷。 However, when the touch panel is not activated, some objects, such as the user's hand, may have been placed on the surface of the touch panel first. Therefore, after the touch panel is activated, the reference value obtained by scanning will not be able to obtain an accurate value due to the influence of the hand. When the actual touch detection is performed on the touch panel, the judgment cannot be made correctly.

因此,如何設計一個新的觸控面板及其偵測方法,以解決上述的問題,乃為此一業界亟待解決的問題。 Therefore, how to design a new touch panel and its detection method to solve the above problems is an urgent problem to be solved in the industry.

因此,本發明之一態樣是在提供一種觸控偵測方法,應用於觸控面板中,其中觸控面板包含觸控單元陣列,觸控單元陣列中的複數觸控單元係排列為複數觸控單元行及複數觸控單元列。觸控偵測方法包含:於初始模式使觸控面板之觸控單元群組進行偵測,以依序取得複數初始偵測電壓值,並將各相鄰之兩個初始偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數初始差分電壓值,其中觸控單元群組對應於觸控單元行及觸控單元列其中之一;使初始差分電壓值做為觸控單元群組之一組基準值;於運作模式使觸控單元群組進行偵測,以依序取得複數偵測電壓值,並將各相鄰之兩個偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數差分電壓值;使差分電壓值依序與此該組基準值相減,俾依序產生複數差距值,以根據差距值之一正負順序關係判斷觸控單元群組是否包含至少一觸控施加點以及至少一觸控移除點,並於觸控單元群組包含觸控移除點時,將基準值更新為差分電壓值 Therefore, one aspect of the present invention provides a touch detection method for use in a touch panel, wherein the touch panel includes a touch unit array, and the plurality of touch units in the touch unit array are arranged in a plurality of touch Control unit row and multiple touch unit columns. The touch detection method includes: detecting, in an initial mode, a touch unit group of the touch panel, sequentially obtaining a plurality of initial detection voltage values, and sequentially ordering two adjacent initial detection voltage values Performing a differential calculation on the previous subtraction to obtain a complex initial differential voltage value, wherein the touch unit group corresponds to one of the touch unit row and the touch unit column; and the initial differential voltage value is used as the touch a set of reference values of the unit group; in the operation mode, the touch unit group is detected to sequentially obtain the complex detection voltage value, and the adjacent two detected voltage values are sequentially followed by the next pair The previous subtraction performs a differential calculation to obtain a complex differential voltage value; the differential voltage value is sequentially subtracted from the set of reference values, and the complex difference value is sequentially generated to determine the touch according to the positive and negative order relationship of the difference value. Whether the unit group includes at least one touch application point and at least one touch removal point, and updating the reference value to a differential voltage value when the touch unit group includes the touch removal point

依據本發明一實施例,其中當觸控單元其中之一未被觸控時,其包含之對應偵測電壓值係相當於預設值,且於被觸控時小於預設值。 According to an embodiment of the invention, when one of the touch units is not touched, the corresponding detected voltage value is equivalent to a preset value, and is less than a preset value when touched.

依據本發明另一實施例,觸控偵測方法更包含當差距值包含在前負數以及在後正數的順序時,判斷觸控單元群組中,位置對應於在前負數以及在後正數之間的至少一觸控單元分別為觸控施加點。 According to another embodiment of the present invention, the touch detection method further includes: when the difference value is included in the front negative number and the order of the backward positive number, determining that the position in the touch unit group corresponds to the previous negative number and the latter positive number At least one touch unit is respectively a touch application point.

依據本發明又一實施例,觸控偵測方法更包含:當差距值包含在前正數以及在後負數的順序時,判斷觸控單元群組中包含觸控移除點。 According to still another embodiment of the present invention, the touch detection method further includes: when the difference value is included in the front positive number and the negative negative order, determining that the touch unit group includes the touch removal point.

依據本發明再一實施例,觸控偵測方法更包含:當差距值未出現在前正數以及在後負數的順序,則保留原先之基準值。 According to still another embodiment of the present invention, the touch detection method further includes: when the difference value does not appear in the order of the positive number and the subsequent negative number, the original reference value is retained.

依據本發明更具有之一實施例,其中觸控單元群組更包含前端虛擬觸控單元以及後端虛擬觸控單元,位於觸控單元群組包含之複數觸控單元的兩端,且前端虛擬觸控單元以及後端虛擬觸控單元對應的初始偵測電壓值及偵測電壓值均為該預設值。 According to another embodiment of the present invention, the touch unit group further includes a front end virtual touch unit and a back end virtual touch unit, which are located at two ends of the plurality of touch units included in the touch unit group, and the front end is virtualized The initial detection voltage value and the detection voltage value corresponding to the touch unit and the back end virtual touch unit are the preset values.

因此,本發明之另一態樣是在提供一種觸控面板,包含:觸控單元陣列、處理模組以及記憶體。觸控單元陣列中的複數觸控單元係排列為複數觸控單元行及複數觸控單元列。處理模組耦接於觸控單元陣列。記憶體具有電腦可執行之複數指令儲存其中,並耦接於處理模組,當指令由處理模組所執行時,係進行下列動作:於初始模式使觸控面板之觸控單元群組進行偵測,以依序取得複數初始偵測電壓值,並將各相鄰之兩個初始偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數初始差分電壓 值,其中觸控單元群組對應於觸控單元行及觸控單元列其中之一;使初始差分電壓值做為觸控單元群組之一組基準值;於運作模式使觸控單元群組進行偵測,以依序取得複數偵測電壓值,並將各相鄰之兩個偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數差分電壓值;使差分電壓值依序與此該組基準值相減,俾依序產生複數差距值,以根據差距值之正負順序關係判斷觸控單元群組是否包含至少一觸控施加點以及至少一觸控移除點,以於觸控單元群組包含觸控移除點時,將基準值更新為差分電壓值。 Therefore, another aspect of the present invention provides a touch panel including: a touch unit array, a processing module, and a memory. The plurality of touch units in the touch unit array are arranged in a plurality of touch unit rows and a plurality of touch unit columns. The processing module is coupled to the touch unit array. The memory has a computer-executable plurality of instructions stored therein and coupled to the processing module. When the instruction is executed by the processing module, the following actions are performed: the touch panel group of the touch panel is detected in the initial mode. The first initial detection voltage value is sequentially obtained, and the two adjacent initial detection voltage values are sequentially calculated by the latter to the previous subtraction to obtain a complex initial differential voltage. The value of the touch unit group corresponds to one of the touch unit row and the touch unit column; the initial differential voltage value is used as a group reference value of the touch unit group; and the touch unit group is used in the operation mode. Performing detection to sequentially obtain the complex detection voltage value, and sequentially calculating the adjacent two detected voltage values from the latter to the previous subtraction to obtain a complex differential voltage value; The values are sequentially subtracted from the set of reference values, and the complex difference value is sequentially generated to determine whether the touch unit group includes at least one touch application point and at least one touch removal point according to the positive and negative order relationship of the difference value. When the touch unit group includes the touch removal point, the reference value is updated to a differential voltage value.

依據本發明一實施例,其中當觸控單元其中之一未被觸控時,其包含之對應偵測電壓值係相當於預設值,且於被觸控時小於預設值。 According to an embodiment of the invention, when one of the touch units is not touched, the corresponding detected voltage value is equivalent to a preset value, and is less than a preset value when touched.

依據本發明另一實施例,其中當差距值包含在前負數以及在後正數的順序時,判斷觸控單元群組中,位置對應於在前負數以及在後正數之間的至少一觸控單元分別為觸控施加點。 According to another embodiment of the present invention, when the difference value includes the previous negative number and the order of the positive number, the position of the touch unit is determined to correspond to at least one touch unit between the previous negative number and the last positive number. Apply points to the touch separately.

依據本發明又一實施例,其中當差距值包含在前正數以及在後負數的順序時,判斷觸控單元群組中包含觸控移除點。 According to still another embodiment of the present invention, when the difference value is included in the order of the front positive number and the negative number, the touch control unit group is included in the touch control unit.

依據本發明再一實施例,其中當差距值未出現在前正數以及在後負數的順序,則保留原先之基準值。 According to still another embodiment of the present invention, wherein the difference value does not appear in the order of the positive number and the subsequent negative number, the original reference value is retained.

依據本發明更具有之一實施例,其中觸控單元群組更包含前端虛擬觸控單元以及後端虛擬觸控單元,位於觸 控單元群組包含之複數觸控單元的兩端,且前端虛擬觸控單元以及後端虛擬觸控單元對應的初始偵測電壓值及偵測電壓值均為該預設值。 According to another embodiment of the present invention, the touch unit group further includes a front end virtual touch unit and a back end virtual touch unit, and is located at the touch The control unit group includes two ends of the plurality of touch units, and the initial detection voltage value and the detection voltage value corresponding to the front virtual touch unit and the back virtual touch unit are the preset values.

應用本發明之優點在於本發明的觸控面板係藉由差分電壓值與基準值之間的差距值計算以及差距值間正負順序關係來判斷觸控施加點及觸控移除點。因此,即便在初始模式下使用者已接觸觸控面板,觸控面板仍可不受影響地判斷新的觸控施加點,並可在觸控物移除的狀況下更新基準值。觸控面板將可避免在初始模式下,由於使用者預先的接觸造成不正確的基準值,而影響運作模式時對觸控行為的判斷。 An advantage of the present invention is that the touch panel of the present invention determines the touch application point and the touch removal point by calculating the difference between the differential voltage value and the reference value and the positive and negative order relationship between the difference values. Therefore, even if the user has touched the touch panel in the initial mode, the touch panel can determine the new touch application point without being affected, and can update the reference value under the condition that the touch object is removed. The touch panel will avoid the judgment of the touch behavior when the operation mode is affected due to the incorrect reference value caused by the user's prior contact in the initial mode.

1‧‧‧觸控面板 1‧‧‧ touch panel

10‧‧‧觸控單元陣列 10‧‧‧Touch unit array

100‧‧‧觸控單元 100‧‧‧Touch unit

11‧‧‧指令 11‧‧‧ directive

12‧‧‧處理模組 12‧‧‧Processing module

14‧‧‧記憶體 14‧‧‧ memory

20、22‧‧‧觸控動作 20, 22‧‧‧ touch action

30、32‧‧‧觸控動作 30, 32‧‧‧ Touch action

400‧‧‧觸控偵測方法 400‧‧‧Touch detection method

401-411‧‧‧步驟 401-411‧‧‧Steps

第1圖為本發明一實施例中,一種觸控面板之方塊圖; 第2A圖至第2D圖分別為本發明一實施例中,觸控單元列的示意圖; 第3圖為本發明一實施例中,觸控單元列的示意圖;以及 第4圖為本發明一實施例中,一種觸控偵測方法之流程圖。 1 is a block diagram of a touch panel according to an embodiment of the invention; 2A to 2D are respectively schematic views of a touch unit column in an embodiment of the present invention; FIG. 3 is a schematic diagram of a column of touch units according to an embodiment of the present invention; FIG. 4 is a flow chart of a touch detection method according to an embodiment of the invention.

請參照第1圖。第1圖為本發明一實施例中,一種 觸控面板1之方塊圖。觸控面板1包含:觸控單元陣列10、處理模組12以及記憶體14。 Please refer to Figure 1. Figure 1 is an embodiment of the present invention, A block diagram of the touch panel 1. The touch panel 1 includes a touch unit array 10 , a processing module 12 , and a memory 14 .

觸控單元陣列10包含複數觸控單元100,並排列為例如第1圖所繪示的觸控單元行Y1-Y5及觸控單元列X1-X5,其中觸控單元行Y1-Y5是以黑色繪示,而觸控單元列X1-X5是以白色繪示。其中,觸控單元100可區分為複數個觸控單元群組,各對應至一個觸控單元行Y1-Y5或一個觸控單元列X1-X5。需注意的是,觸控單元的行數及列數於不同實施例中可視實際需求調整,不為第1圖的實施例所限。 The touch unit array 10 includes a plurality of touch units 100, and is arranged, for example, as the touch unit rows Y1-Y5 and the touch unit columns X1-X5 shown in FIG. 1 , wherein the touch unit rows Y1-Y5 are black. The touch unit columns X1-X5 are shown in white. The touch unit 100 can be divided into a plurality of touch unit groups, each corresponding to one touch unit row Y1-Y5 or one touch unit column X1-X5. It should be noted that the number of rows and the number of columns of the touch unit may be adjusted according to actual needs in different embodiments, and is not limited to the embodiment of FIG. 1 .

於一實施例中,此觸控面板1是例如,但不限於電容式觸控面板。觸控單元100在未接觸時,其電壓值將為一預設值。而在被施以觸控動作時,觸控單元100的電壓值將因為其內部的電容值被觸控物影響而改變並下降,成為小於此預設值的數值。更詳細的來說,當觸控單元100從未被觸控狀態進行到被觸控的狀態時,其電壓值將從預設值變成小於此預設值的數值。而當觸控單元100從被觸控的狀態回復到未被觸控狀態時,其電壓值將從小於此預設值的數值變成預設值。 In an embodiment, the touch panel 1 is, for example, but not limited to, a capacitive touch panel. When the touch unit 100 is not in contact, its voltage value will be a preset value. When the touch action is applied, the voltage value of the touch unit 100 will change and decrease due to the internal capacitance value being affected by the touch object, and become a value smaller than the preset value. In more detail, when the touch unit 100 is not in the touch state to the touched state, the voltage value thereof will change from the preset value to a value smaller than the preset value. When the touch unit 100 returns from the touched state to the untouched state, the voltage value thereof will change from a value smaller than the preset value to a preset value.

於一實施例中,當觸控單元100在未接觸時,其電壓值為例如但不限於1伏特,而在被施以觸控動作時,其電壓值將為小於1伏特的值,例如但不限於0.5伏特。於其他實施例中,觸控單元100在未被施以觸控動作以及被施以觸控動作時的電壓值可視實際狀況而有所不同,不為上 述的數值所限。於一實施例中,觸控面板1可藉由例如,但不限於逐列循環掃瞄的方式,逐一對各觸控單元列X1-X5包含的觸控單元100依序進行掃瞄,以得知各觸控單元100的電壓值為多少,進一步依據取得的電壓值判斷何處的觸控單元100實際地被施以觸控動作。 In one embodiment, when the touch unit 100 is not in contact, its voltage value is, for example, but not limited to, 1 volt, and when a touch action is applied, the voltage value thereof will be a value less than 1 volt, for example, Not limited to 0.5 volts. In other embodiments, the voltage value of the touch unit 100 when the touch operation is not applied and the touch action is applied may be different depending on the actual situation. The values stated are limited. In one embodiment, the touch panel 1 can be sequentially scanned by the touch unit 100 included in each of the touch unit columns X1-X5 by, for example, but not limited to, a column-by-column cyclic scan. Knowing the value of the voltage of each touch unit 100, it is further determined according to the obtained voltage value, where the touch unit 100 is actually subjected to a touch action.

處理模組12耦接於觸控單元陣列10以及記憶體14。處理模組12可為各種具有運算能力的處理器。記憶體14於不同實施例中,例如但不限於唯讀記憶體、快閃記憶體、軟碟、硬碟、光碟、隨身碟、磁帶、可由網路存取之資料庫或其他類型之記憶體,儲存有多個電腦可執行的指令11,並耦接於處理模組12。當指令由處理模組12根據記憶體14中儲存的指令11執行處理動作,係可執行並提供應用於觸控面板1的觸控偵測方法。以下將就處理模組12執行的處理動作進行說明。 The processing module 12 is coupled to the touch unit array 10 and the memory 14 . The processing module 12 can be a variety of processors with computing power. The memory 14 is in various embodiments such as, but not limited to, a read only memory, a flash memory, a floppy disk, a hard disk, a compact disk, a flash drive, a magnetic tape, a network accessible database, or other types of memory. A plurality of computer executable instructions 11 are stored and coupled to the processing module 12. When the processing is performed by the processing module 12 according to the instruction 11 stored in the memory 14, the touch detection method applied to the touch panel 1 can be performed and provided. The processing operation performed by the processing module 12 will be described below.

請參照第2A圖至第2D圖。第2A圖至第2D圖分別為本發明一實施例中,觸控單元列X1的示意圖。於本實施例中,係繪示觸控單元列X1包含的五個觸控單元X11-X15。 Please refer to Figures 2A to 2D. 2A to 2D are respectively schematic views of the touch unit column X1 in an embodiment of the present invention. In the embodiment, five touch units X11-X15 included in the touch unit column X1 are illustrated.

在觸控面板1剛啟動的初始模式下,觸控面板1的各個觸控單元群組即開始進行偵測。於一實施例中,觸控面板1係以上述逐列循環掃瞄,且對各觸控單元列中的觸控單元100依序進行掃瞄的方式,取得複數初始偵測電壓值。其中,如前所述,在一實施例中當觸控單元100在未接觸時,其電壓值為1伏特,而在被施以觸控動作時,其 電壓值將為0.5伏特。 In the initial mode in which the touch panel 1 is just activated, each touch unit group of the touch panel 1 starts to detect. In one embodiment, the touch panel 1 scans in a column-by-column manner, and sequentially scans the touch units 100 in each touch unit row to obtain a plurality of initial detection voltage values. As described above, in an embodiment, when the touch unit 100 is not in contact, its voltage value is 1 volt, and when a touch action is applied, The voltage value will be 0.5 volts.

以第2A圖所示的觸控單元列X1為例,如在初始模式下,使用者的左手為了握持配置有觸控面板1的電子裝置而接觸到觸控面板1,造成左手的觸控動作20施加於例如觸控單元X12,則處理模組12可依五個觸控單元X11-X15的排列順序取得初始偵測電壓值Vi1-Vi5,分別為1、0.5、1、1及1伏特。 Taking the touch unit row X1 shown in FIG. 2A as an example, in the initial mode, the user's left hand touches the touch panel 1 in order to hold the electronic device equipped with the touch panel 1 , resulting in touch of the left hand. The action 20 is applied to, for example, the touch unit X12, and the processing module 12 can obtain the initial detection voltage values Vi1-Vi5 according to the arrangement order of the five touch units X11-X15, which are 1, 0.5, 1, 1, and 1 volt, respectively. .

接著,處理模組12將各相鄰之兩個初始偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數初始差分電壓值Vid1-Vid4。以上述的初始偵測電壓值Vi1-Vi5的數值為例,初始差分電壓值Vid1-Vid4可分別以下列式子計算而得:Vid1=Vi2-Vi1=-0.5;Vid2=Vi3-Vi2=0.5;Vid3=Vi4-Vi3=0;Vid4=Vi5-Vi4=0。 Then, the processing module 12 performs differential calculation on the adjacent two initial detection voltage values sequentially from the next to the previous subtraction to obtain the complex initial differential voltage values Vid1-Vid4. Taking the values of the initial detection voltage values Vi1-Vi5 as an example, the initial differential voltage values Vid1-Vid4 can be respectively calculated by the following equations: Vid1=Vi2-Vi1=-0.5; Vid2=Vi3-Vi2=0.5; Vid3=Vi4-Vi3=0; Vid4=Vi5-Vi4=0.

處理模組12將使初始差分電壓值Vid1-Vid4(-0.5,0.5,0,0)做為觸控單元列X1的一組基準值Vb1-Vb4。於一實施例中,處理模組12可將基準值Vb1-Vb4儲存於記憶體14,亦或其他設置於觸控面板1的儲存模組(未繪示)中。 The processing module 12 will make the initial differential voltage values Vid1-Vid4 (-0.5, 0.5, 0, 0) as a set of reference values Vb1-Vb4 of the touch unit column X1. In one embodiment, the processing module 12 can store the reference values Vb1 - Vb4 in the memory 14 or other storage modules (not shown) disposed in the touch panel 1 .

在初始模式後的運作模式下,各個觸控單元群組將繼續進行偵測。於一實施例中,觸控面板1係以上述逐列循環掃瞄,且對各觸控單元列中的觸控單元100依序進行 掃瞄的方式,以取得複數偵測電壓值Vs1-Vs5。 In the operation mode after the initial mode, each touch unit group will continue to detect. In one embodiment, the touch panel 1 scans in a column-by-column manner, and sequentially performs the touch unit 100 in each touch unit column. The scanning method is to obtain the complex detection voltage values Vs1-Vs5.

以第2B圖所示的觸控單元列X1為例,如使用者的左手尚未移開而維持著觸控動作20,右手同時施以觸控動作22於例如觸控單元X13,處理模組12可依五個觸控單元X11-X15的排列順序取得偵測電壓值Vs1-Vs5,分別為1、0.5、0.5、1及1伏特。 Taking the touch unit row X1 shown in FIG. 2B as an example, if the left hand of the user has not been removed to maintain the touch action 20, the right hand simultaneously applies the touch action 22 to, for example, the touch unit X13, and the processing module 12 The detection voltage values Vs1-Vs5 can be obtained according to the arrangement order of the five touch units X11-X15, which are 1, 0.5, 0.5, 1, and 1 volt, respectively.

接著,處理模組12將各相鄰之兩個偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數差分電壓值Vd1-Vd4。以上述的偵測電壓值Vs1-Vs5的數值為例,差分電壓值Vd1-Vd4可分別以下列式子計算而得:Vd1=Vs2-Vs1=-0.5;Vd2=Vs3-Vs2=0;Vd3=Vs4-Vs3=0.5;Vd4=Vs5-Vs4=0。 Then, the processing module 12 performs differential calculation on the adjacent two detected voltage values sequentially from the next one to the previous subtraction to obtain the complex differential voltage values Vd1 - Vd4. Taking the values of the detected voltage values Vs1 - Vs5 as an example, the differential voltage values Vd1 - Vd4 can be respectively calculated by the following equations: Vd1 = Vs2 - Vs1 = -0.5; Vd2 = Vs3 - Vs2 = 0; Vd3 = Vs4-Vs3 = 0.5; Vd4 = Vs5 - Vs4 = 0.

處理模組12進一步將差分電壓值Vd1-Vd4(-0.5,0,0.5,0)與基準值Vb1-Vb4(-0.5,0.5,0,0)相減,以依序產生複數差距值Ve1-Ve4。因此,差距值Ve1-Ve4可分別以下列式子計算而得:Ve1=Vd1-Vb1=0;Ve2=Vd2-Vb2=-0.5;Ve3=Vd3-Vb3=0.5;Ve4=Vd4-Vb4=0。 The processing module 12 further subtracts the differential voltage values Vd1 - Vd4 (-0.5, 0, 0.5, 0) from the reference values Vb1 - Vb4 (-0.5, 0.5, 0, 0) to sequentially generate the complex difference value Ve1- Ve4. Therefore, the difference values Ve1 - Ve4 can be respectively calculated by the following equations: Ve1 = Vd1 - Vb1 = 0; Ve2 = Vd2 - Vb2 = -0.5; Ve3 = Vd3 - Vb3 = 0.5; Ve4 = Vd4 - Vb4 = 0.

處理模組12判斷差距值Ve1-Ve4的正負順序關係。於本實施例中,當差距值Ve1-Ve4中,具有一個在前 負數以及一個在後正數的順序,例如分別為-0.5及0.5的差距值Ve2及Ve3,則處理模組12將判斷觸控單元列X1中,位置對應於此在前負數以及此在後正數間的觸控單元X13為觸控施加點。意即,觸控單元X13在前一個狀態中(即第2A圖的狀態)尚未被觸控,而在現在的狀態(即第2B圖的狀態)中則已被觸控,而形成觸控施加點。 The processing module 12 determines the positive and negative order relationship of the difference values Ve1-Ve4. In this embodiment, when the difference values Ve1-Ve4 have one before The negative number and the order of the positive numbers, for example, the gap values Ve2 and Ve3 of -0.5 and 0.5, respectively, the processing module 12 will determine that the position in the touch unit column X1 corresponds to the previous negative number and the subsequent positive number. The touch unit X13 is a touch application point. That is, the touch unit X13 has not been touched in the previous state (ie, the state of FIG. 2A), but has been touched in the current state (ie, the state of FIG. 2B), and the touch application is formed. point.

需注意的是,因為差距值Ve2及Ve3係根據差分電壓值Vd2、Vd3產生,而差分電壓值Vd2、Vd3又是分別根據偵測電壓值Vs2及Vs3與偵測電壓值Vs3及Vs4產生。因此,上述位置對應於差距值Ve2及Ve3間的,是與兩組偵測電壓值的交集,即偵測電壓值Vs3相關的觸控單元X13。 It should be noted that since the difference values Ve2 and Ve3 are generated according to the differential voltage values Vd2 and Vd3, the differential voltage values Vd2 and Vd3 are generated based on the detected voltage values Vs2 and Vs3 and the detected voltage values Vs3 and Vs4, respectively. Therefore, the position corresponding to the gap value Ve2 and Ve3 is the touch unit X13 related to the intersection of the two detected voltage values, that is, the detected voltage value Vs3.

進一步地,當差距值中,未出現一個在前正數以及一個在後負數的順序時,處理模組12將保留原先的基準值Vb1-Vb4(-0.5,0.5,0,0)而不予更新。 Further, when there is no preceding positive number and one subsequent negative number in the gap value, the processing module 12 will retain the original reference value Vb1-Vb4 (-0.5, 0.5, 0, 0) without updating. .

當觸控單元列X1如第2C圖所示,使用者的右手施加於觸控單元X13的觸控動作22尚存在,而原先左手施加於觸控單元X12的觸控動作卻已移開,則處理模組12可依五個觸控單元X11-X15的排列順序取得新的偵測電壓值Vs1’-Vs5’,分別為1、1、0.5、1及1伏特。 When the touch unit row X1 is as shown in FIG. 2C, the touch action 22 applied by the user's right hand to the touch unit X13 still exists, and the touch action originally applied to the touch unit X12 by the left hand has been removed. The processing module 12 can obtain new detection voltage values Vs1'-Vs5' according to the order of the five touch units X11-X15, which are 1, 1, 0.5, 1, and 1 volt, respectively.

接著,處理模組12將各相鄰之兩個偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數差分電壓值Vd1’-Vd4’。以上述的偵測電壓值Vs1’-Vs5’的數值為例,差分電壓值Vd1’-Vd4’可分別以下列式子計算而得: Vd1’=Vs2’-Vs1’=0;Vd2’=Vs3’-Vs2’=-0.5;Vd3’=Vs4’-Vs3’=0.5;Vd4’=Vs5’-Vs4’=0。 Then, the processing module 12 performs differential calculation on the adjacent two detected voltage values sequentially from the next one to the previous subtraction to obtain the complex differential voltage values Vd1'-Vd4'. Taking the values of the detected voltage values Vs1'-Vs5' as an example, the differential voltage values Vd1'-Vd4' can be calculated by the following equations: Vd1' = Vs2' - Vs1' = 0; Vd2' = Vs3' - Vs2' = -0.5; Vd3' = Vs4' - Vs3' = 0.5; Vd4' = Vs5' - Vs4' = 0.

處理模組12進一步將差分電壓值Vd1’-Vd4’(0,-0.5,0.5,0)與基準值Vb1-Vb4(-0.5,0.5,0,0)相減,以依序產生複數差距值Ve1’-Ve4’。因此,差距值Ve1’-Ve4’可分別以下列式子計算而得:Ve1’=Vd1’-Vb1=0.5;Ve2’=Vd2’-Vb2=-1;Ve3’=Vd3’-Vb3=0.5;Ve4’=Vd4’-Vb4=0。 The processing module 12 further subtracts the differential voltage value Vd1'-Vd4' (0, -0.5, 0.5, 0) from the reference value Vb1 - Vb4 (-0.5, 0.5, 0, 0) to sequentially generate a complex difference value. Ve1'-Ve4'. Therefore, the difference values Ve1'-Ve4' can be calculated by the following equations respectively: Ve1'=Vd1'-Vb1=0.5; Ve2'=Vd2'-Vb2=-1; Ve3'=Vd3'-Vb3=0.5; Ve4'=Vd4'-Vb4=0.

處理模組12判斷差距值Ve1’-Ve4’之正負順序關係。於本實施例中,當差距值Ve1’-Ve4’的兩個相鄰差距值具有一個在前的正數以及一個在後的負數,例如分別為0.5及-1的差距值Ve1’及Ve2’,則處理模組12將判斷和前一個掃瞄的時間點相比,觸控單元列X1中有觸控的物體是剛移除的。因此,處理模組12將使差分電壓值Vd1’-Vd4’(0,-0.5,0.5,0)儲存為基準值Vb1’-Vb4’。而由於差距值Ve2’及Ve3’仍分別為一個在前的負數以及一個在後的正數,因此處理模組12仍會判斷觸控單元X13為觸控施加點。 The processing module 12 determines the positive and negative order relationship of the difference values Ve1'-Ve4'. In the present embodiment, when the two adjacent gap values of the gap values Ve1'-Ve4' have a preceding positive number and a subsequent negative number, for example, gap values Ve1' and Ve2' of 0.5 and -1, respectively, The processing module 12 will determine that the touched object in the touch unit column X1 is just removed compared to the time point of the previous scan. Therefore, the processing module 12 stores the differential voltage values Vd1'-Vd4' (0, -0.5, 0.5, 0) as the reference values Vb1'-Vb4'. Since the difference values Ve2' and Ve3' are still a previous negative number and a subsequent positive number, the processing module 12 still determines that the touch unit X13 is a touch application point.

當觸控單元列X1如第2D圖所示,使用者的右手施加於觸控單元X13的觸控動作22進一步移除,則處理模組12可依五個觸控單元X11-X15的排列順序取得新的偵測 電壓值Vs1”-Vs5”,分別為1、1、1、1及1伏特。 When the touch unit row X1 is further removed from the touch action 22 of the touch unit X13 as shown in FIG. 2D, the processing module 12 can be arranged according to the order of the five touch units X11-X15. Get new detections The voltage values Vs1"-Vs5" are 1, 1, 1, 1 and 1 volt, respectively.

接著,處理模組12將各相鄰之兩個偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數差分電壓值Vd1”-Vd4”。以上述的偵測電壓值Vs1”-Vs5”的數值為例,差分電壓值Vd1”-Vd4”可分別以下列式子計算而得:Vd1”=Vs2”-Vs1”=0;Vd2”=Vs3”-Vs2”=0;Vd3”=Vs4”-Vs3”=0;Vd4”=Vs5”-Vs4”=0。 Then, the processing module 12 performs differential calculation on the adjacent two detected voltage values sequentially from the previous one to the previous subtraction to obtain the complex differential voltage values Vd1"-Vd4". Taking the value of the detected voltage value Vs1"-Vs5" as an example, the differential voltage values Vd1"-Vd4" can be respectively calculated by the following equation: Vd1"=Vs2"-Vs1"=0; Vd2"=Vs3 "-Vs2" = 0; Vd3" = Vs4" - Vs3" = 0; Vd4" = Vs5" - Vs4" = 0.

處理模組12進一步將差分電壓值Vd1”-Vd4”(0,0,0,0)與剛剛更新的基準值Vb1’-Vb4’(0,-0.5,0.5,0)相減,以依序產生複數差距值Ve1”-Ve4”。因此,差距值Ve1”-Ve4”可分別以下列式子計算而得:Ve1”=Vd1”-Vb1’=0;Ve2”=Vd2”-Vb2’=0.5;Ve3”=Vd3”-Vb3’=-0.5;Ve4”=Vd4”-Vb4’=0。 The processing module 12 further subtracts the differential voltage values Vd1"-Vd4" (0, 0, 0, 0) from the reference value Vb1'-Vb4' (0, -0.5, 0.5, 0) that has just been updated, in order. A complex difference value Ve1"-Ve4" is generated. Therefore, the difference values Ve1"-Ve4" can be calculated by the following equations respectively: Ve1"=Vd1"-Vb1'=0; Ve2"=Vd2"-Vb2'=0.5; Ve3"=Vd3"-Vb3'= -0.5; Ve4" = Vd4" - Vb4' = 0.

處理模組12判斷差距值Ve1”-Ve4”之正負順序關係。於本實施例中,由於分別為0.5及-0.5的差距值Ve2”及Ve3”是一個在前的正數以及一個在後的負數,因此處理模組12將判斷和前一個掃瞄的時間點相比,觸控單元列X1中的觸控單元X13為觸控移除點。意即,觸控單元X13在前一個狀態中(即第2C圖的狀態)有觸控,而在現在的 狀態(即第2D圖的狀態)中則已被移除,而形成觸控移除點。 The processing module 12 determines the positive and negative order relationship of the difference values Ve1"-Ve4". In the present embodiment, since the difference values Ve2" and Ve3" of 0.5 and -0.5, respectively, are a preceding positive number and a subsequent negative number, the processing module 12 judges the time point of the previous scan. The touch unit X13 in the touch unit column X1 is a touch removal point. That is, the touch unit X13 has a touch in the previous state (ie, the state of FIG. 2C), and in the present The state (ie, the state of the 2D image) has been removed to form a touch removal point.

因此,處理模組12將在偵測到觸控單元列X1具有觸控移除點的情形下,使差分電壓值Vd1”-Vd4”(0,0,0,0)儲存為基準值Vb1”-Vb4”。 Therefore, the processing module 12 will store the differential voltage values Vd1"-Vd4" (0, 0, 0, 0) as the reference value Vb1 in the case where the touch unit column X1 is detected to have the touch removal point. -Vb4".

因此,本發明的觸控面板1係藉由差分電壓值與基準值之間的差距值計算以及差距值間正負順序關係來判斷觸控施加點及觸控移除點。因此,即便在初始模式下使用者已接觸觸控面板1,觸控面板1仍可不受影響地判斷新的觸控施加點,並可在觸控物移除的狀況下更新基準值。觸控面板1將可避免在初始模式下,由於使用者預先的接觸造成不正確的基準值,而影響運作模式時對觸控行為的判斷。 Therefore, the touch panel 1 of the present invention determines the touch application point and the touch removal point by calculating the difference between the differential voltage value and the reference value and the positive and negative order relationship between the difference values. Therefore, even if the user has touched the touch panel 1 in the initial mode, the touch panel 1 can determine the new touch application point without being affected, and can update the reference value in the case where the touch object is removed. The touch panel 1 can avoid the judgment of the touch behavior when the operation mode is affected due to the incorrect reference value caused by the user's prior contact in the initial mode.

需注意的是,上述實施例是以觸控單元列X1為例。在實際應用中,觸控面板1中的所有觸控單元列X1-X5及觸控單元行Y1-Y5均可採用上述的機制進行觸控的判斷以及是否更新基準值的判斷。並且,上述的實施例中,是以在前正數及在後負數相鄰,以及在前負數及在後正數相鄰的狀況說明。當在前正數及在後負數或是在前負數及在後正數並未相鄰時,亦可應用同樣的機制進行判斷與處理,任何熟習此技藝者,在不脫離本揭示內容之精神和範圍內當可推知,因此不再贅述。 It should be noted that the above embodiment is an example of the touch unit column X1. In the actual application, all the touch unit rows X1-X5 and the touch unit rows Y1-Y5 in the touch panel 1 can use the above mechanism to determine the touch and whether to update the reference value. Further, in the above-described embodiment, the description is given by the fact that the preceding positive number and the subsequent negative number are adjacent, and the preceding negative number and the subsequent positive number are adjacent. The same mechanism can be used for judgment and processing when the preceding positive number and the negative number or the preceding negative number and the last positive number are not adjacent. Anyone skilled in the art can avoid the spirit and scope of the disclosure. It can be inferred internally, so it will not be described again.

請參照第3圖。第3圖為本發明一實施例中,觸控單元列X1的示意圖。 Please refer to Figure 3. FIG. 3 is a schematic diagram of a touch unit column X1 according to an embodiment of the invention.

於一實施例中,處理模組12在進行上述的計算時,可進一步考慮觸控單元列X1包含的前端虛擬觸控單元X10以及後端虛擬觸控單元X16,係位於觸控單元X11-X15的兩側。於第3圖中,前端虛擬觸控單元X10以及後端虛擬觸控單元X16是以虛線繪示。其中,前端虛擬觸控單元X10以及後端虛擬觸控單元X16的電壓值,不論是在初始模式下的初始偵測電壓值或是在運作模式下的偵測電壓值均為預設值。 In an embodiment, the processing module 12 further considers the front-end virtual touch unit X10 and the back-end virtual touch unit X16 included in the touch unit column X1, and is located in the touch unit X11-X15. On both sides. In FIG. 3, the front virtual touch unit X10 and the back virtual touch unit X16 are shown by dashed lines. The voltage values of the front virtual touch unit X10 and the back virtual touch unit X16 are preset values regardless of the initial detection voltage value in the initial mode or the detection voltage value in the operation mode.

舉例來說,如果觸控單元列X1原先未被施以任何的觸控動作,且在考慮前端虛擬觸控單元X10以及後端虛擬觸控單元X16後,基準值VB0-VB5將為(0,0,0,0,0,0)。當觸控單元列X1在如第3圖所示的狀態下,在觸控單元X11及X15被施以觸控動作30及32。因此,處理模組12可依前端虛擬觸控單元X10、五個觸控單元X11-X15以及後端虛擬觸控單元X16的排列順序取得偵測電壓值VS0-VS6,分別為1、0.5、1、1、1、0.5及1伏特。 For example, if the touch unit column X1 is not previously subjected to any touch action, and after considering the front virtual touch unit X10 and the back virtual touch unit X16, the reference values VB0-VB5 will be (0, 0,0,0,0,0). When the touch unit row X1 is in the state as shown in FIG. 3, touch operations 30 and 32 are applied to the touch units X11 and X15. Therefore, the processing module 12 can obtain the detection voltage values VS0-VS6 according to the arrangement order of the front virtual touch unit X10, the five touch units X11-X15, and the back virtual touch unit X16, which are 1, 0.5, and 1, respectively. 1, 1, 1, 0.5 and 1 volt.

接著,處理模組12將各相鄰之兩個偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數差分電壓值VD0-VD5。以上述的偵測電壓值VS0-VS6的數值為例,差分電壓值VD0-VD5可分別以下列式子計算而得:VD0=VS1-VS0=-0.5;VD1=VS2-VS1=0.5;VD2=VS3-VS2=0;VD3=VS4-VS3=0; VD4=VS5-VS4=-0.5;VD5=VS6-VS5=0.5。 Then, the processing module 12 performs differential calculation on the adjacent two detected voltage values sequentially from the previous one to the previous subtraction to obtain the complex differential voltage values VD0-VD5. Taking the above-mentioned detection voltage values VS0-VS6 as an example, the differential voltage values VD0-VD5 can be calculated by the following equations: VD0=VS1-VS0=-0.5; VD1=VS2-VS1=0.5; VD2= VS3-VS2=0; VD3=VS4-VS3=0; VD4 = VS5 - VS4 = -0.5; VD5 = VS6 - VS5 = 0.5.

處理模組12進一步將差分電壓值VD0-VD5(-0.5,0.5,0,0,-0.5,0.5)與基準值VB0-VB5(0,0,0,0,0,0)相減,以依序產生複數差距值VE0-VE5。因此,差距值VE0-VE5可分別以下列式子計算而得:VE0=VD0-VB0=-0.5;VE1=VD1-VB1=0.5;VE2=VD2-VB2=0;VE3=VD3-VB3=0;VE4=VD4-VB4=-0.5;VE5=VD5-VB5=0.5。 The processing module 12 further subtracts the differential voltage values VD0-VD5 (-0.5, 0.5, 0, 0, -0.5, 0.5) from the reference values VB0-VB5 (0, 0, 0, 0, 0, 0) to The complex gap value VE0-VE5 is generated in sequence. Therefore, the difference values VE0-VE5 can be calculated by the following equations: VE0=VD0-VB0=-0.5; VE1=VD1-VB1=0.5; VE2=VD2-VB2=0; VE3=VD3-VB3=0; VE4=VD4-VB4=-0.5; VE5=VD5-VB5=0.5.

由於差距值VE0及VE1間出現在前負數以及在後正數的順序,且差距值VE4及VE5間亦出現在前負數以及在後正數的順序,因此處理模組12將判斷觸控單元列X1中,位置對應於差距值VE0及VE1間的觸控單元X11以及對應於差距值VE4及VE5間的觸控單元X15為觸控施加點。 Since the gap values VE0 and VE1 appear in the order of the front negative number and the last positive number, and the gap values VE4 and VE5 also appear in the order of the front negative number and the last positive number, the processing module 12 will determine the touch unit column X1. The touch unit X11 corresponding to the gap value VE0 and VE1 and the touch unit X15 corresponding to the gap value VE4 and VE5 are touch application points.

請參照第4圖。第4圖為本發明一實施例中,一種觸控偵測方法400的流程圖。觸控偵測方法400可應用於如第1圖所繪示的觸控面板1中。觸控偵測方法400包含下列步驟。 Please refer to Figure 4. FIG. 4 is a flow chart of a touch detection method 400 according to an embodiment of the invention. The touch detection method 400 can be applied to the touch panel 1 as shown in FIG. 1 . The touch detection method 400 includes the following steps.

於步驟401,使觸控面板1運作於初始模式。 In step 401, the touch panel 1 is operated in an initial mode.

於步驟402,使觸控面板1之觸控單元群組(例如 觸控單元列X1)進行偵測,以依序取得初始偵測電壓值,例如對應於第2A圖所示的觸控單元列X1中的觸控單元X11-X15的初始偵測電壓值Vi1-Vi5。 In step 402, the touch unit group of the touch panel 1 is made (for example, The touch unit column X1) performs detection to sequentially obtain the initial detection voltage value, for example, the initial detection voltage value Vi1- corresponding to the touch unit X11-X15 in the touch unit column X1 shown in FIG. 2A. Vi5.

於步驟403,將各相鄰之兩個初始偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得初始差分電壓值,例如前述的初始差分電壓值Vid1-Vid4。 In step 403, the two adjacent initial detection voltage values are sequentially differentially calculated from the latter to the previous subtraction to obtain an initial differential voltage value, such as the aforementioned initial differential voltage values Vid1-Vid4.

於步驟404,使初始差分電壓值Vid1-Vid4做為觸控單元群組之一組基準值Vb1-Vb4。 In step 404, the initial differential voltage values Vid1-Vid4 are made as a group reference value Vb1-Vb4 of the touch unit group.

於步驟405,使觸控面板1運作於運作模式。 In step 405, the touch panel 1 is operated in an operation mode.

於步驟406,使觸控單元群組進行偵測,以依序取得偵測電壓值,例如前述的偵測電壓值Vs1-Vs5。 In step 406, the touch unit group is detected to sequentially acquire detection voltage values, such as the aforementioned detection voltage values Vs1 - Vs5.

於步驟407,將各相鄰之兩個偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得差分電壓值,例如前述的差分電壓值Vd1-Vd4。 In step 407, the two adjacent detection voltage values are sequentially differentially calculated from the latter to the previous subtraction to obtain a differential voltage value, such as the aforementioned differential voltage values Vd1 - Vd4.

於步驟408,使差分電壓值依序與基準值相減,俾依序產生差距值,以根據差距值之正負順序關係判斷觸控單元群組中是否包含觸控施加點。 In step 408, the differential voltage value is sequentially subtracted from the reference value, and the difference value is sequentially generated to determine whether the touch control group includes the touch application point according to the positive and negative order relationship of the difference value.

於步驟409,進一步根據差距值之正負順序關係判斷觸控單元群組是否包含觸控移除點。 In step 409, it is further determined whether the touch unit group includes the touch removal point according to the positive and negative order relationship of the difference value.

當觸控單元群組包含觸控移除點時,於步驟410,將基準值更新為差分電壓值。流程並進一步回到步驟405,使觸控面板1運作於運作模式,以持續偵測觸控。 When the touch unit group includes a touch removal point, in step 410, the reference value is updated to a differential voltage value. The process further returns to step 405 to operate the touch panel 1 in an operation mode to continuously detect the touch.

而當觸控單元群組未包含觸控移除點時,於步驟411,保留基準值。流程並進一步回到步驟405,使觸控面 板1運作於運作模式,以持續偵測觸控。 When the touch unit group does not include the touch removal point, in step 411, the reference value is retained. Flow and go back to step 405 to make the touch surface The board 1 operates in an operational mode to continuously detect touch.

雖然本揭示內容已以實施方式揭露如上,然其並非用以限定本揭示內容,任何熟習此技藝者,在不脫離本揭示內容之精神和範圍內,當可作各種之更動與潤飾,因此本揭示內容之保護範圍當視後附之申請專利範圍所界定者為準。 The present disclosure has been disclosed in the above embodiments, but it is not intended to limit the disclosure, and any person skilled in the art can make various changes and refinements without departing from the spirit and scope of the disclosure. The scope of protection of the disclosure is subject to the definition of the scope of the patent application.

400‧‧‧觸控偵測方法 400‧‧‧Touch detection method

401-411‧‧‧步驟 401-411‧‧‧Steps

Claims (12)

一種觸控偵測方法,應用於一觸控面板中,其中該觸控面板包含一觸控單元陣列,該觸控單元陣列中的複數觸控單元係排列為複數觸控單元行及複數觸控單元列,該觸控偵測方法包含:於一初始模式使該觸控面板之一觸控單元群組進行偵測,以依序取得複數初始偵測電壓值,並將各相鄰之兩個該等初始偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數初始差分電壓值,其中該觸控單元群組對應於該等觸控單元行及該等觸控單元列其中之一;使該等初始差分電壓值做為該觸控單元群組之一組基準值;於一運作模式使該觸控單元群組進行偵測,以依序取得複數偵測電壓值,並將各相鄰之兩個該等偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數差分電壓值;以及使該等差分電壓值依序與該組基準值相減,俾依序產生複數差距值,以根據該等差距值之一正負順序關係判斷該觸控單元群組是否包含至少一觸控施加點以及至少一觸控移除點,並於該觸控單元群組包含該觸控移除點時,將該組基準值更新為該組差分電壓值。 A touch detection method is applied to a touch panel, wherein the touch panel includes a touch unit array, and the plurality of touch units in the touch unit array are arranged in a plurality of touch units and a plurality of touch units. The unit of the touch detection method includes: detecting, in an initial mode, a touch unit group of the touch panel to sequentially obtain a plurality of initial detection voltage values, and sequentially The initial detection voltage values are sequentially calculated by the latter one for the previous subtraction to obtain a plurality of initial differential voltage values, wherein the touch unit group corresponds to the touch unit rows and the touch units One of the columns; the initial differential voltage value is used as a group reference value of the touch unit group; the touch unit group is detected in an operation mode to sequentially obtain the complex detection voltage value And sequentially calculating, by each of the two adjacent detection voltage values, a difference between the subsequent one and the previous subtraction to obtain a complex differential voltage value; and sequentially aligning the differential voltage values with the set of reference values Subtraction The distance value is determined according to whether the touch unit group includes at least one touch application point and at least one touch removal point according to the positive and negative order relationship of the difference values, and the touch unit group includes the touch When the point is removed, the set of reference values is updated to the set of differential voltage values. 如請求項1所述之觸控偵測方法,其中當該等觸控單元其中之一未被觸控時,其包含之一對應偵測電壓值係 相當於一預設值,且於被觸控時小於該預設值。 The touch detection method of claim 1, wherein when one of the touch units is not touched, it includes one of the detected voltage values. It is equivalent to a preset value and is smaller than the preset value when touched. 如請求項2所述之觸控偵測方法,更包含:當該等差距值包含一在前負數以及一在後正數的順序時,判斷該觸控單元群組中,位置對應於該在前負數以及該在後負數之間的至少一該等觸控單元分別為該觸控施加點。 The touch detection method of claim 2, further comprising: determining that the location of the touch unit group corresponds to the previous one when the difference value includes a previous negative number and a positive positive number The negative number and the at least one of the touch units between the negative numbers are respectively applied to the touch. 如請求項2所述之觸控偵測方法,更包含:當該等差距值包含一在前正數以及一在後負數的順序時,判斷該觸控單元群組中包含該觸控移除點。 The touch detection method of claim 2, further comprising: determining that the touch control group includes the touch removal point when the difference value includes a previous positive number and a negative order . 如請求項4所述之觸控偵測方法,更包含:當該等差距值未出現該在前正數以及該在後負數的順序,則保留原先之該組基準值。 The touch detection method of claim 4, further comprising: retaining the original set of reference values when the difference between the preceding positive number and the subsequent negative number does not occur. 如請求項2所述之觸控偵測方法,其中該觸控單元群組更包含一前端虛擬觸控單元以及一後端虛擬觸控單元,位於該觸控單元群組包含之複數觸控單元的兩端,且該前端虛擬觸控單元以及該後端虛擬觸控單元對應的該等初始偵測電壓值及該等偵測電壓值均為該預設值。 The touch detection method of claim 2, wherein the touch unit group further includes a front end virtual touch unit and a back end virtual touch unit, and the plurality of touch units included in the touch unit group The initial detection voltage values and the detected voltage values corresponding to the front end virtual touch unit and the back end virtual touch unit are both preset values. 一種觸控面板,包含:一觸控單元陣列,該觸控單元陣列中的複數觸控單元 係排列為複數觸控單元行及複數觸控單元列;一處理模組,耦接於該觸控單元陣列;以及一具有電腦可執行之複數指令儲存其中之記憶體,耦接於該處理模組,當該等指令由該處理模組所執行時,係進行下列動作:於一初始模式使該觸控面板之一觸控單元群組進行偵測,以依序取得複數初始偵測電壓值,並將各相鄰之兩個該等初始偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數初始差分電壓值,其中該觸控單元群組對應於該等觸控單元行及該等觸控單元列其中之一;使該等初始差分電壓值於做為該觸控單元群組之一組基準值;於該初始模式後之一運作模式使該觸控單元群組進行偵測,以依序取得複數偵測電壓值,並將各相鄰之兩個該等偵測電壓值依序由後一個對前一個相減進行差分計算,以獲得複數差分電壓值;以及使該等差分電壓值依序與該組基準值相減,俾依序產生複數差距值,以根據該等差距值之一正負順序關係判斷該觸控單元群組是否包含至少一觸控施加點以及至少一觸控移除點,以於該觸控單元群組包含該觸控移除點時,將該組基準值更新為該組差分電壓值。 A touch panel includes: a touch unit array, and a plurality of touch units in the touch unit array The system is arranged in a plurality of touch unit rows and a plurality of touch unit rows; a processing module coupled to the touch unit array; and a memory having a computer executable plurality of instructions stored therein coupled to the processing module When the instructions are executed by the processing module, the following actions are performed: detecting a group of touch units of the touch panel in an initial mode to sequentially obtain a plurality of initial detection voltage values And calculating, by the difference between the two adjacent initial detection voltage values, the subsequent one of the previous subtraction voltages to obtain a complex initial differential voltage value, wherein the touch unit group corresponds to the touch One of the control unit rows and one of the touch unit columns; the initial differential voltage values are used as a set of reference values for the touch unit group; and the operation mode enables the touch unit after the initial mode The group performs detection to sequentially obtain the complex detection voltage value, and sequentially compares each of the two adjacent detection voltage values by the latter to the previous subtraction to obtain a complex differential voltage value. And make these differences The pressure value is sequentially subtracted from the set of reference values, and the complex difference value is sequentially generated to determine whether the touch unit group includes at least one touch application point and at least one touch according to the positive and negative order relationship of the difference values. The removal point is controlled such that when the touch unit group includes the touch removal point, the set of reference values is updated to the set of differential voltage values. 如請求項7所述之觸控面板,其中當該等觸控單元 其中之一未被觸控時,其包含之一對應偵測電壓值係相當於一預設值,且於被觸控時小於該預設值。 The touch panel of claim 7, wherein the touch panels are When one of the touches is not touched, one of the corresponding detection voltage values is equivalent to a preset value, and is smaller than the preset value when touched. 如請求項8所述之觸控面板,其中當該等差距值包含一在前負數以及一在後正數的順序時,該處理模組判斷該觸控單元群組中,位置對應於該在前負數以及該在後負數之間的至少一該等觸控單元分別為該觸控施加點。 The touch panel of claim 8, wherein the processing module determines that the position in the touch unit group corresponds to the previous one when the difference value includes a front negative number and a rear positive number. The negative number and the at least one of the touch units between the negative numbers are respectively applied to the touch. 如請求項8所述之觸控面板,其中當該等差距值包含一在前正數以及一在後負數的順序時,該處理模組判斷該觸控單元群組中包含該觸控移除點。 The touch panel of claim 8, wherein the processing module determines that the touch control group includes the touch removal point when the difference value includes a front positive number and a negative negative order . 如請求項10所述之觸控面板,其中當該等差距值未出現該在前正數以及該在後負數的順序,該處理模組保留原先之該組基準值。 The touch panel of claim 10, wherein the processing module retains the original set of reference values when the difference between the preceding positive number and the negative subsequent number occurs. 如請求項8所述之觸控面板,其中該觸控單元群組更包含一前端虛擬觸控單元以及一後端虛擬觸控單元,位於該觸控單元群組包含之複數觸控單元的兩端,且該前端虛擬觸控單元以及該後端虛擬觸控單元對應的該等初始偵測電壓值及該等偵測電壓值均為該預設值。 The touch panel of claim 8, wherein the touch unit group further includes a front virtual touch unit and a back virtual touch unit, and the two touch control unit includes two And the initial detection voltage value and the detection voltage value corresponding to the front-end virtual touch unit and the back-end virtual touch unit are the preset values.
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