TW201415301A - Stylus, touch sensitive device and method for recognizing type of input element in contact with capacitive touch screen - Google Patents
Stylus, touch sensitive device and method for recognizing type of input element in contact with capacitive touch screen Download PDFInfo
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Abstract
Description
本發明係有關於觸控筆、感應裝置及辨識與觸控面板接觸之輸入元件的種類的方法，特別是應用於電容式觸控面板的觸控筆、具有此觸控筆的感應裝置及辨識與觸控面板接觸之輸入元件的種類的方法。 The present invention relates to a stylus, an inductive device, and a method for identifying a type of an input component that is in contact with a touch panel, particularly a stylus for a capacitive touch panel, an inductive device having the stylus, and identification A method of touching the type of input element with the touch panel.
這些年來，由於觸控面板對於顯示裝置的應用越來越廣泛，故到處皆可見消費性電子產品有其普遍的應用。而觸控面板也因其使用的需求不同，而有不同的觸控方式。相較於其他種類的觸控面板，由於電容式觸控面板具有透光度較佳、硬度較高、反應時間較快、觸控靈敏度較高之特性，使其在觸控技術的應用較受歡迎。 In recent years, as touch panels have become more and more widely used for display devices, consumer electronics products have been widely used everywhere. The touch panel also has different touch modes because of the different needs of its use. Compared with other types of touch panels, capacitive touch panels have better transmittance, higher hardness, faster response time and higher touch sensitivity, making them more suitable for touch technology applications. welcome.
一般對電容式觸控面板輸入資訊的觸控型式有兩種，亦即主動式及被動式。其中，電容式觸控面板的被動式輸入元件包含手指及被動式觸控筆。然而，電容式觸控面板在判別這個輸入資訊的觸控物的種類上卻存在著困難。更詳細地說，當使用者手持被動式觸控筆以觸碰電容式觸控面板時，由於被動式觸控筆會經由人體傳導而使部分電荷散逸，造成電容式觸控面板的輸出感應電壓下降。當使用者的手指以較小面積輕壓觸控面板時，電容式觸控面板的輸出感應電壓變化可能會小到跟觸控筆按壓時所產生的感應電壓一樣，此時偵測系統會將此手指頭的觸控誤認為觸控筆 的觸控而無法正確辨識。 Generally, there are two types of touch types for inputting information to a capacitive touch panel, that is, active and passive. The passive input component of the capacitive touch panel includes a finger and a passive stylus. However, the capacitive touch panel has difficulty in determining the type of the touch object of the input information. In more detail, when the user holds the passive stylus to touch the capacitive touch panel, the passive stylus will be partially discharged due to conduction through the human body, resulting in a decrease in the output induced voltage of the capacitive touch panel. When the user's finger presses the touch panel with a small area, the output induced voltage change of the capacitive touch panel may be as small as the induced voltage generated when the stylus is pressed, and the detection system will The touch of this finger is mistaken for the stylus The touch is not recognized correctly.
另一方面，為了使觸控反應時間縮短、省電、降低雜訊、及觸控效率提升，亦可使用主動式的觸控筆。然而，由於主動式觸控筆其內含有電池及相關複雜電路，再加上觸控筆筆身與筆頭皆為金屬製成，因此主動式觸控筆的成本較被動式觸控筆的成本高，而不符合經濟效益。 On the other hand, in order to shorten the touch response time, save power, reduce noise, and improve touch efficiency, an active stylus can also be used. However, since the active stylus contains a battery and related complicated circuits, and the stylus pen body and the pen tip are made of metal, the cost of the active stylus is higher than that of the passive stylus. Not in line with economic benefits.
根據本發明之一實施例之一種觸控筆，其包括有一筆頭及一筆桿，此筆頭連接於筆桿的一端且筆頭的介電常數介於3至1000之間，此觸控筆用以作為一電容式觸控面板的輸入元件。 A stylus according to an embodiment of the present invention includes a pen head and a pen that is connected to one end of the pen and has a dielectric constant of between 3 and 1000. The stylus is used as a The input component of the capacitive touch panel.
根據本發明之一實施例的感應裝置，其包括有一觸控筆、一電容式觸控面板以及一控制單元。此觸控筆的筆頭之介電常數介於3至1000之間。此電容式觸控面板具有一感應區且此電容式觸控面板用以接受觸控筆或是一導電體於感應區上的觸碰以產生感測訊號。此控制單元電性連接於電容式觸控面板。當感測訊號大於標準值時，控制單元判定感測訊號是由觸控筆觸碰感應區所造成，而當感測訊號低於標準值時，控制單元判定感測訊號是由導電體觸碰感應區所造成。 The sensing device according to an embodiment of the invention includes a stylus, a capacitive touch panel and a control unit. The stylus has a dielectric constant between 3 and 1000. The capacitive touch panel has a sensing area and the capacitive touch panel is adapted to receive a touch of a stylus or a conductive body on the sensing area to generate a sensing signal. The control unit is electrically connected to the capacitive touch panel. When the sensing signal is greater than the standard value, the control unit determines that the sensing signal is caused by the touch pen touching the sensing area, and when the sensing signal is lower than the standard value, the control unit determines that the sensing signal is touched by the conductive body. Caused by the district.
根據本發明之一實施例的辨識與電容式觸控面板接觸之輸入元件的種類的方法，此方法是用以判定與電容式觸控面板接觸之一輸入元件為一導電元件或是一觸控筆，而觸控筆的筆頭之介電常數介於3至1000之間。此方法之步驟包括有將一控制訊號傳送 至電容式觸控面板的一感應區，並且量測電容式觸控面板對應於控制訊號而輸出的感測訊號，以及將感測訊號與一標準值比較，當感測訊號大於標準值時，將判定感測訊號是由觸控筆觸碰感應區所造成，當感測訊號低於標準值時，將判定感測訊號是由導電體觸碰感應區所造成。 A method for identifying a type of an input component in contact with a capacitive touch panel according to an embodiment of the present invention is for determining that one of the input components in contact with the capacitive touch panel is a conductive component or a touch The pen, and the stylus pen has a dielectric constant between 3 and 1000. The steps of the method include transmitting a control signal And a sensing area of the capacitive touch panel, and measuring the sensing signal output by the capacitive touch panel corresponding to the control signal, and comparing the sensing signal with a standard value, when the sensing signal is greater than the standard value, The determination of the sensing signal is caused by the touch of the stylus to the sensing area. When the sensing signal is lower than the standard value, it is determined that the sensing signal is caused by the conductor touching the sensing area.
以上之關於本發明內容之說明及以下之實施方式之說明係用以示範與解釋本發明之原理，並且提供本發明之專利申請範圍更進一步之解釋。 The above description of the present invention and the following description of the embodiments of the present invention are intended to illustrate and explain the principles of the invention.
請參照『第1圖』，係為根據本發明一實施例之一種觸控筆10，包括有一筆頭110及一筆桿120，此筆頭110連接於筆桿120的一端且筆頭110的介電常數介於3至1000之間，在部分的實施例中，筆頭110的介電常數介於100至300之間，其中筆頭110的材質可為二氧化鈦或是鈦酸鋇，而筆桿120所使用的材質可為塑膠。 Please refer to FIG. 1 , which is a stylus 10 according to an embodiment of the invention. The stylus 10 includes a head 110 and a pen 120 connected to one end of the pen 120 and the dielectric constant of the pen 110 is between Between 3 and 1000, in some embodiments, the dielectric constant of the writing head 110 is between 100 and 300, wherein the material of the writing head 110 can be titanium dioxide or barium titanate, and the material used for the pen holder 120 can be plastic.
請參照『第2圖』其繪示本發明之一實施例的觸控感應裝置20，其中『第1圖』的觸控筆10可作為觸控感應裝置20之輸入媒介。觸控感應裝置20包括一電容式觸控面板200、一控制單元230以及『第1圖』的觸控筆10。在本實施例中，電容式觸控面板200是利用透明電極層與人體之間的靜電結合產生之電容變化，從觸控位置經觸控物所引發之電流變化及電流變化處距電容式觸控面板200的四個角落的距離比例的分佈來檢測位置座標。 更詳細地說，電容式觸控面板200的觸控感應原理是以電壓作用在電容式觸控面板200的一感應區220的四個角落並形成一固定且均勻之電場。電容式觸控面板200被觸碰時，被觸碰的位置可使電場引發電流。藉由控制單元230測定電流距四個角落的距離比例的不同，即可計算出觸碰的位置座標。電容式觸控面板200於運作時是透過外加之一控制訊號210至電容式觸控面板200的感應區220。之後，當感應區220接收觸控筆10的觸控，電容式觸控面板200相應於控制訊號210而產生一感測訊號240。由於觸控筆10的筆頭110的介電常數介於3至1000之間，因此這個高介電常數的特性將使得互電容增加，會造成感測訊號值240變大。基於此觸控筆10會造成的感測訊號值240變大的特性，本實施例更可以利用觸控筆10來增進電容式觸控面板200辨識觸控物種類的成功率。其詳細說明如下所述。 Referring to FIG. 2, a touch sensing device 20 according to an embodiment of the present invention is illustrated. The stylus 10 of FIG. 1 can be used as an input medium for the touch sensing device 20. The touch sensing device 20 includes a capacitive touch panel 200, a control unit 230, and a stylus 10 of FIG. In this embodiment, the capacitive touch panel 200 is a capacitance change generated by the electrostatic combination between the transparent electrode layer and the human body, and the current change and the current change caused by the touch object from the touch position are capacitively touched. The distribution of the distance ratios of the four corners of the control panel 200 detects the position coordinates. In more detail, the touch sensing principle of the capacitive touch panel 200 is to apply a voltage to the four corners of a sensing area 220 of the capacitive touch panel 200 and form a fixed and uniform electric field. When the capacitive touch panel 200 is touched, the touched position can cause an electric field to induce a current. The position coordinates of the touch can be calculated by the control unit 230 measuring the difference in the distance ratio of the current from the four corners. The capacitive touch panel 200 is operated by applying a control signal 210 to the sensing area 220 of the capacitive touch panel 200. Then, when the sensing area 220 receives the touch of the stylus 10 , the capacitive touch panel 200 generates a sensing signal 240 corresponding to the control signal 210 . Since the dielectric constant of the tip 110 of the stylus pen 10 is between 3 and 1000, this high dielectric constant characteristic will increase the mutual capacitance, which will cause the sensing signal value 240 to become larger. Based on the feature that the sensible signal value 240 is increased by the stylus 10, the stylus 10 can further improve the success rate of the capacitive touch panel 200 for identifying the type of the touch object. The detailed description thereof is as follows.
請參照『第3圖』，在本實施例中，在外加一控制訊號210至感應區220的情況下，若使用者將其手指300觸控感應區220時，由於手指300為導體，因此手指300會吸取部分電流造成電壓的下降，進而控制單元230會偵測到感測訊號值250變小。以上實施例便可以依據感測訊號值240、250的變化，亦即依據感測訊號值240、250與一標準值之間的差異來判斷與感應區220接觸的接觸物的種類是手指300或是觸控筆10。以下將介紹控制單元230辨識接觸物的種類的流程。 Referring to FIG. 3, in the embodiment, when a control signal 210 is applied to the sensing area 220, if the user touches the finger 300 to the sensing area 220, since the finger 300 is a conductor, the finger is used. 300 will draw a part of the current to cause a voltage drop, and the control unit 230 will detect that the sense signal value 250 becomes smaller. In the above embodiment, the change of the sensing signal values 240, 250, that is, the difference between the sensing signal values 240, 250 and a standard value, can be determined as the type of the contact object contacting the sensing area 220 is the finger 300 or It is the stylus 10. The flow in which the control unit 230 recognizes the kind of the contact object will be described below.
請參照『第4圖』所示本發明之一實施例的辨識觸控物的步 驟流程圖。首先，如步驟S400所示，偵測電容式觸控面板200的感應區220所輸出之感測訊號值240、250。如步驟S410所示，接著判斷此感測訊號值240、250是否大於一標準值。若此感測訊號值240大於一標準值則如步驟S420所示，控制單元230判定感測訊號240是由觸控筆10觸碰感應區220所造成。若此訊號值低於此標準值則如步驟S430所示，控制單元230則判定感測訊號250是由手指300觸碰感應區220所造成。 Please refer to the step of recognizing the touch object according to an embodiment of the present invention shown in FIG. 4 . Flow chart. First, as shown in step S400, the sensing signal values 240, 250 outputted by the sensing area 220 of the capacitive touch panel 200 are detected. As shown in step S410, it is next determined whether the sensed signal values 240, 250 are greater than a standard value. If the sensing signal value 240 is greater than a standard value, the control unit 230 determines that the sensing signal 240 is caused by the stylus 10 touching the sensing area 220, as shown in step S420. If the signal value is lower than the standard value, the control unit 230 determines that the sensing signal 250 is caused by the finger 300 touching the sensing area 220, as shown in step S430.
請接著參照『第5圖』所示本發明之一實施例的辨識觸控物種類的詳細方法流程圖。首先，如步驟S510所示，控制單元230讀取感測訊號240、250。如步驟S520所示，接著判斷此感測訊號值240、250是否大於一標準值，其中此標準值為感應區220未被觸碰時，電容式觸控面板200輸出之感測訊號值。若此訊號值大於此標準值則如步驟S530所示，控制單元230判定感測訊號240是由觸控筆10觸碰感應區220所造成。接著如步驟S540所示，將感測訊號240的準位與標準值取差值後，若此差值大於觸控筆10可分辨的臨界準位，則如步驟S550所示，控制單元230將輸出觸控筆10所觸碰的位置的座標。另一方面，若此感測訊號值240、250低於一標準值則如步驟S560所示，控制單元230則判定感測訊號250是由手指300觸碰感應區220所造成。接著如步驟S570所示，將感測訊號250的準位與標準值取差值後，若大於手指300可分辨的臨界準位，則如步驟S580所示，控制單元230輸出手指300所觸碰的位置的座標。 Please refer to the flowchart of the detailed method for recognizing the type of the touch object according to an embodiment of the present invention shown in FIG. 5. First, as shown in step S510, the control unit 230 reads the sensing signals 240, 250. As shown in step S520, it is determined whether the sensed signal value 240, 250 is greater than a standard value, wherein the standard value is the sensed signal value output by the capacitive touch panel 200 when the sensing area 220 is not touched. If the value of the signal is greater than the standard value, the control unit 230 determines that the sensing signal 240 is caused by the stylus 10 touching the sensing area 220, as shown in step S530. Then, as shown in step S540, after the difference between the level of the sensing signal 240 and the standard value, if the difference is greater than the threshold level that the stylus 10 can distinguish, the control unit 230 will display the step 230 as shown in step S550. The coordinates of the position touched by the stylus pen 10 are output. On the other hand, if the sensing signal value 240, 250 is lower than a standard value, the control unit 230 determines that the sensing signal 250 is caused by the finger 300 touching the sensing area 220, as shown in step S560. Then, as shown in step S570, after the difference between the level of the sensing signal 250 and the standard value is greater than the threshold level that can be resolved by the finger 300, the control unit 230 outputs the touch of the finger 300 as shown in step S580. The coordinates of the location.
綜上所述，由於觸控筆的筆頭為介電常數介於3至1000之間的材質所構成，因此相較於習知的主動式觸控筆或是金屬製的被動式觸控筆而言，上述實施例的觸控筆的製造成本較為低廉。 In summary, since the stylus pen is made of a material having a dielectric constant between 3 and 1000, it is compared with a conventional active stylus or a metal passive stylus. The stylus of the above embodiment is relatively inexpensive to manufacture.
另外，藉由上述實施例的觸控筆，由於其筆頭的介電常數介於3至1000之間，因此當此觸控筆接觸電容式觸控面板時，此觸控筆會造成電容式觸控面板所輸出的感測訊號明顯高於手指觸碰電容式觸控面板時電容式觸控面板所產生的感測訊號。是以，相較於習知技術而言，當資訊輸入觸控物觸碰電容式觸控面板時，上述實施例的感應裝置以及方法可以提高辨識出此資訊輸入觸控物為手指或是觸控筆的成功率。 In addition, with the stylus of the above embodiment, since the dielectric constant of the stylus is between 3 and 1000, when the stylus contacts the capacitive touch panel, the stylus causes capacitive touch. The sensing signal output by the panel is significantly higher than the sensing signal generated by the capacitive touch panel when the finger touches the capacitive touch panel. Therefore, the sensing device and the method of the above embodiments can improve the identification of the information input touch object as a finger or touch when the information input touch object touches the capacitive touch panel. The success rate of the pen.
雖然本發明以前述之較佳實施例揭露如上，然其並非用以限定本發明，任何熟習相像技藝者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，因此本發明之專利保護範圍須視本說明書所附之申請專利範圍所界定者為準。 While the present invention has been described above in terms of the preferred embodiments thereof, 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. The patent protection scope of the invention is subject to the definition of the scope of the patent application attached to the specification.
10‧‧‧觸控筆 10‧‧‧ stylus
110‧‧‧筆頭 110‧‧‧ pen head
120‧‧‧筆桿 120‧‧‧ pen
20‧‧‧觸控感應裝置 20‧‧‧Touch sensing device
200‧‧‧電容式觸控面板 200‧‧‧Capacitive touch panel
210‧‧‧控制訊號 210‧‧‧Control signal
220‧‧‧感應區 220‧‧‧sensing area
230‧‧‧控制單元 230‧‧‧Control unit
240、250‧‧‧感測訊號 240, 250‧‧‧ sensing signals
300‧‧‧手指 300‧‧‧ fingers
第1圖係為本發明所揭露之觸控筆圖。 Figure 1 is a stylus diagram of the present invention.
第2圖係為繪示本發明之一實施例的觸控感應裝置。 Figure 2 is a diagram showing a touch sensing device according to an embodiment of the present invention.
第3圖係為繪示本發明之另一實施例的觸控感應裝置。 Figure 3 is a diagram showing a touch sensing device according to another embodiment of the present invention.
第4圖係為本發明之一實施例的辨識觸控物的步驟流程圖。 FIG. 4 is a flow chart showing the steps of recognizing a touch object according to an embodiment of the present invention.
第5圖係為本發明之一實施例的辨識觸控物種類的詳細方法流程圖。 FIG. 5 is a flow chart of a detailed method for identifying a type of a touch object according to an embodiment of the present invention.
10‧‧‧觸控筆 10‧‧‧ stylus
20‧‧‧觸控感應裝置 20‧‧‧Touch sensing device
200‧‧‧電容式觸控面板 200‧‧‧Capacitive touch panel
210‧‧‧控制訊號 210‧‧‧Control signal
220‧‧‧感應區 220‧‧‧sensing area
230‧‧‧控制單元 230‧‧‧Control unit
240‧‧‧感測訊號 240‧‧‧Sense signal
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| CN2012105801261A CN103123544A (en) | 2012-10-03 | 2012-12-27 | Touch pen, induction device and method for identifying type of input element |
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| TWI525500B (en) * | 2014-10-01 | 2016-03-11 | 緯創資通股份有限公司 | Touch system, stylus, touch apparatus and control method thereof |
| CN104951207A (en) * | 2015-06-15 | 2015-09-30 | 联想(北京)有限公司 | Control method and electronic device |
| CN105549861B (en) * | 2015-12-09 | 2019-06-28 | Oppo广东移动通信有限公司 | Detection method, control method, control device and electronic device |
| CN114518806A (en) * | 2020-11-18 | 2022-05-20 | 群创光电股份有限公司 | Sensing device |
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|---|---|---|---|---|
| JP4554651B2 (en) * | 2007-08-01 | 2010-09-29 | ホシデン株式会社 | Touch panel input device |
| CN101551723B (en) * | 2008-04-02 | 2011-03-23 | 华硕电脑股份有限公司 | Electronic device and related control method |
| CN201194098Y (en) * | 2008-04-22 | 2009-02-11 | 比亚迪股份有限公司 | Hand-writing pen |
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2012
- 2012-10-03 TW TW101136579A patent/TW201415301A/en unknown
- 2012-12-27 CN CN2012105801261A patent/CN103123544A/en active Pending
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| CN103123544A (en) | 2013-05-29 |
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