TWI459273B - A touch screen device with correction function and its correction method - Google Patents
A touch screen device with correction function and its correction method Download PDFInfo
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Description
本發明係為一種觸控螢幕裝置,尤指一種針對觸控螢幕裝置的觸控面板執行電容值重新校正的觸控校正裝置及其校正方法。 The present invention relates to a touch screen device, and more particularly to a touch correction device for performing recalibration of a capacitance value for a touch panel of a touch screen device and a calibration method thereof.
隨著觸控技術不斷的精進與發展,觸控式的輸入裝置已普遍應用在許多終端電子產品上,提供了更為優越的操控性及多樣性的介面操作方式,藉以取代傳統滑鼠及鍵盤等輸入裝置的功能,進而節省操作的空間並解決周邊輸入設備攜帶不便的困擾。 With the continuous improvement and development of touch technology, touch-based input devices have been widely used in many terminal electronic products, providing superior controllability and a variety of interface operations to replace traditional mouse and keyboard. The function of the input device, thereby saving the operation space and solving the trouble of inconvenience of the peripheral input device.
觸控面板依據其觸控技術概分有電阻式、電容式、光學式或聲波式等,而電容式觸控面板依照其工作原理的不同又分為表面電容式及投射電容式兩種,其中投射電容式觸控面板為目前市場中較受歡迎且市場佔有率較高的技術,此由於投射式電容式觸控面板具有較佳的透視率、較為靈敏的操作性、以及較高的使用壽命等優點。 According to the touch technology, the touch panel has resistance, capacitance, optical or acoustic wave, and the capacitive touch panel is divided into surface capacitance type and projection capacitance type according to different working principles. Projected capacitive touch panels are currently popular in the market and have a high market share. This is because the projected capacitive touch panel has better perspective, more sensitive operation, and higher service life. Etc.
投射電容式觸控面板的結構,主要是在一玻璃基板上以透明導電物質以X軸及Y軸方向,形成一矩陣狀排列的感應線路,並在每一個X軸及Y軸的感應線路交會處構成一具有等效電場的感應點,當手指接近或碰觸此一感應點時,則會在感應點處產生一電容值的變化,如此觸控面板的微控制器即可經由 偵測此一電容值產生變化的位置,進而判斷及計算出手指所接近或碰觸處相對應在觸控面板上的座標點資料。 The structure of the projected capacitive touch panel is mainly to form a matrix-shaped sensing circuit with a transparent conductive material in a X-axis and a Y-axis direction on a glass substrate, and to meet each of the X-axis and Y-axis sensing lines. Forming a sensing point with an equivalent electric field, when the finger approaches or touches the sensing point, a change in the capacitance value is generated at the sensing point, so that the touch panel microcontroller can pass through Detecting the position where the capacitance value changes, and then judging and calculating the coordinate point data corresponding to the touch panel on the finger approaching or touching.
然而,投射電容式觸控面板的缺點在於該手指接近或碰觸感應點時所產生的電容值改變量大小甚為微弱,觸控面板又易於受到環境因素的影響而造成觸控面板靈敏度的降低,該些影響因素包括溫度或周邊電磁雜訊的干擾,造成觸控訊號不易被偵測及判讀,甚至會被誤判為有進行觸控操作的缺點。 However, the disadvantage of the projected capacitive touch panel is that the amount of change in the capacitance value generated when the finger approaches or touches the sensing point is weak, and the touch panel is susceptible to environmental factors, thereby reducing the sensitivity of the touch panel. These influencing factors include temperature or interference from surrounding electromagnetic noise, which makes the touch signal difficult to be detected and interpreted, and may even be misjudged as having the disadvantage of performing touch operation.
目前習知的解決方式則是在一已安裝有作業軟體的終端電子產品上預載安裝一校準程式,當觸控面板靈敏度降低而不易於操作時,得以藉由手指碰觸及點選顯示在終端電子產品的螢幕桌面上的校準圖像,藉此執行校準程式對電容基準值進行校正。再者,另一種習知的解決方式則是採用自動校準的方式,以便能夠於在觸控面板操作的期間中,藉由設定一固定的偵測週期執行偵測,並依據偵測結果判別觸控面板是否需要即時執行校準程式。 At present, the conventional solution is to preload and install a calibration program on a terminal electronic product on which the operating software is installed. When the sensitivity of the touch panel is lowered and it is not easy to operate, it can be displayed on the terminal by finger touch and click. The calibration image on the screen of the electronic product is used to perform a calibration routine to correct the capacitance reference value. Moreover, another conventional solution is to adopt an automatic calibration method, so that during the operation of the touch panel, the detection is performed by setting a fixed detection period, and the touch is determined according to the detection result. Whether the control panel needs to execute the calibration program on the fly.
前述揭露的習知的解決方式仍具有部分的缺點,其中經由手指觸碰及點選螢幕桌面上校準圖像的方式,使用者必須事先將層疊及顯示於桌面上的視窗逐一關閉或移開後,才可觀視及碰觸到位於桌面上的校準圖像,藉以執行校準程式,因此當觸控面板的靈敏度實際上已不甚佳的清況下,將造成使用者於觸控操作上的不便。再者,藉由定時偵測及自動校準的方式,由於校準程式必須在背景執行且不斷定時偵測及進行校準,不但 將會耗費終端電子產品的記憶體資源,亦相對會產生較多的耗能而難以符合環保的要求。 The conventional solution disclosed above still has some disadvantages, in which the user must first close or remove the windows stacked and displayed on the desktop one by one by touching and clicking the image on the screen desktop. In order to view and touch the calibration image on the desktop, the calibration program can be executed. Therefore, when the sensitivity of the touch panel is actually not good, the user's inconvenience in touch operation will be caused. . Furthermore, with timing detection and automatic calibration, since the calibration program must be executed in the background and continuously detected and calibrated, not only It will consume the memory resources of the terminal electronic products, and will also generate more energy consumption and it is difficult to meet the requirements of environmental protection.
為了能有效克服先前技術執行觸控校正程式時的缺點。 In order to effectively overcome the shortcomings of the prior art implementation of the touch correction program.
為此,本發明揭露一種具校正功能的觸控螢幕裝置,該觸控螢幕裝置至少包括:一顯示螢幕;以及一觸控面板,疊置於該顯示螢幕上,該觸控面板的表面具有一提供觸控操作區域的觸控區及一非供觸控操作區域的非觸控區,並在該非觸控區設置有至少一功能鍵,使得當該功能鍵被觸發後產生一控制訊號的輸出,以執行一觸控校正功能。 To this end, the present invention discloses a touch screen device with a correction function. The touch screen device includes at least: a display screen; and a touch panel stacked on the display screen, the surface of the touch panel has a surface Providing a touch area of the touch operation area and a non-touch area not for the touch operation area, and at least one function key is disposed in the non-touch area, so that a control signal output is generated when the function key is triggered To perform a touch correction function.
另者,本發明更揭露一種具校正功能的觸控螢幕裝置,至少包括有:一顯示螢幕;一觸控面板,是疊設於該顯示螢幕上,用以提供觸控感測的功能,其上設置有一功能鍵,該功能鍵被觸發後可產生一控制訊號的輸出;一觸控校正模組,用以執行一觸控校正程序;一中央處理器,分別連接於該顯示螢幕、該觸控面板、該功能鍵及該觸控處理模組,用以接收該控制訊號後發出一命令訊息至該觸控校正模組,以要求該觸控校正模組執行該觸控校正程序,並產生至少一校正值;以及 一儲存模組,是電連接於該中央處理器,用以儲存該校正值。 In addition, the present invention further discloses a touch screen device with a correction function, comprising at least: a display screen; a touch panel stacked on the display screen for providing touch sensing function, A function button is provided, the function button is triggered to generate a control signal output; a touch correction module is configured to execute a touch correction program; a central processor is respectively connected to the display screen, the touch The control panel, the function key and the touch processing module are configured to receive the control signal and then send a command message to the touch correction module to request the touch correction module to execute the touch correction program and generate At least one correction value; A storage module is electrically connected to the central processor for storing the correction value.
再者,本發明更揭露一種觸控螢幕裝置校正方法,其方法包括:觸發一功能鍵以啟動一觸控校正程序;執行觸控校正程序,對一觸控面板上的複數感應點的電容值進行校正,並分別產生出新的一校正值;暫存該校正值;判斷觸控校正程序是否重複執行達到一預設的校正次數;若前一步驟判斷結果已達到預設的校正次數,則判斷暫存的各校正值間的差異值是否超過一預設的門檻值;以及若判斷暫存的各校正值間的差異值未超過該預設的門檻值時,則儲存及更新該校正值。 Furthermore, the present invention further discloses a method for correcting a touch screen device, the method comprising: triggering a function button to activate a touch correction program; and performing a touch correction program to calculate a capacitance value of a plurality of sensing points on a touch panel Performing correction, and respectively generating a new correction value; temporarily storing the correction value; determining whether the touch correction program is repeatedly executed to reach a preset number of corrections; if the previous step determines that the preset correction number has been reached, Determining whether the difference value between the temporarily stored correction values exceeds a predetermined threshold value; and if it is determined that the difference value between the temporarily stored correction values does not exceed the preset threshold value, storing and updating the Correction value.
請參閱第1圖所示,為本發明的觸控螢幕裝置的外觀示意圖。本發明的觸控螢幕裝置1是以一體成形多功能觸控電腦(All in One PC)為例進行說明,但本發明並不以此為限,觸控螢幕裝置亦可指一具有觸控螢幕的筆記型電腦或平板電腦。觸控螢幕裝置1是由一觸控面板及一顯示螢幕相互疊置所構成,在觸控面板的表面具有一提供觸控操作區域的觸控區3及一非供觸控操作區域的非觸控區2,當手指或導電體接近或 觸碰觸控區3時可以產生對應的一觸控訊號,非觸控區則設置有至少一功能鍵4,功能鍵4可以依據觸控螢幕裝置1的結構而選擇以電容式觸碰開關或機械式開關等其中任一種方式實施,使得當功能鍵4被觸發後可以產生一控制訊號的輸出,以執行一觸控校正功能。 Please refer to FIG. 1 , which is a schematic diagram of the appearance of the touch screen device of the present invention. The touch screen device 1 of the present invention is described by taking an integrally formed multi-function touch computer (All in One PC) as an example, but the present invention is not limited thereto, and the touch screen device may also refer to a touch screen. Laptop or tablet. The touch screen device 1 is composed of a touch panel and a display screen. The touch panel has a touch area 3 for providing a touch operation area and a non-touch area for the touch operation area. Control zone 2, when the finger or conductor is close to or When the touch area 3 is touched, a corresponding touch signal can be generated, and the non-touch area is provided with at least one function key 4. The function key 4 can be selected as a capacitive touch switch according to the structure of the touch screen device 1 or The mechanical switch or the like is implemented in such a manner that when the function key 4 is triggered, an output of the control signal can be generated to perform a touch correction function.
以下再就功能鍵4的選擇做進一步的說明,當本發明實施於一無邊框設計的觸控螢幕裝置1時,即觸控螢幕裝置1的非觸控區2與觸控區3是構成在一體式設計的透明蓋板上,例如全平面式設計的觸控式螢幕,在此一情況下,本發明可以選擇在非觸控區2的蓋板表面任一位置處設置電容式觸碰開關,並在位於電容式觸碰開關的表面上同時印刷設置一識別性的圖案5,以供使用者易於辨識及碰觸操作。另者,當本發明為一具有邊框設計的觸控螢幕裝置1時,例如觸控式螢幕為具有一邊框的設計時,本發明可選擇以機械式開關實施於非觸控區2的邊框任一位置處以供觸壓操作,並同樣在機械式開關的表面上印刷設置識別性的圖案5。 In the following, the selection of the function key 4 is further described. When the present invention is implemented in a touch screen device 1 having no frame design, the non-touch area 2 and the touch area 3 of the touch screen device 1 are formed. The transparent cover of the integrated design, for example, the touch screen of the full-plan design, in this case, the invention can select the capacitive touch switch at any position on the cover surface of the non-touch area 2 And an identification pattern 5 is simultaneously printed on the surface of the capacitive touch switch for easy identification and touch operation by the user. In addition, when the present invention is a touch screen device 1 having a bezel design, for example, when the touch screen is designed with a bezel, the present invention can select a mechanical switch to be implemented in the frame of the non-touch area 2 A position is used for the touch operation, and an identification pattern 5 is also printed on the surface of the mechanical switch.
請參閱第2圖所示,為本發明的觸控螢幕裝置的功能方塊圖。如圖所示,觸控螢幕裝置1至少包括一中央處理器10、一顯示螢幕20、一觸控面板30、一觸控處理模組40、一觸控校正模組50及一儲存模組60。前述的觸控處理模組40、觸控校正模組50、儲存模組60及顯示螢幕20分別是電連接至中央處理器10,以便於透過中央處理器10進行功能的控制及訊 息的處理,觸控面板30則是電連接至觸控處理模組40,並疊設於顯示螢幕20上。 Please refer to FIG. 2, which is a functional block diagram of the touch screen device of the present invention. As shown in the figure, the touch screen device 1 includes at least a central processing unit 10, a display screen 20, a touch panel 30, a touch processing module 40, a touch correction module 50, and a storage module 60. . The touch processing module 40, the touch correction module 50, the storage module 60, and the display screen 20 are electrically connected to the central processing unit 10, respectively, so as to perform function control and communication through the central processing unit 10. The touch panel 30 is electrically connected to the touch processing module 40 and stacked on the display screen 20.
觸控面板30用以提供觸控感測的功能,當觸控面板30偵測一觸碰動作後可以對應產生一觸控訊號T1,並輸出至觸控處理模組40,觸控處理模組40則將所接收的觸控訊號T1予以解析,經由計算得到一相對應的座標點資訊,並傳輸至中央處理器10進行後續的處理,中央處理器10則將處理後所得到的顯示資訊D1傳遞至顯示螢幕20,並命令顯示螢幕20予以輸出顯示。 The touch panel 30 is configured to provide a touch sensing function. When the touch panel 30 detects a touch action, the touch panel 30 can generate a touch signal T1 and output the touch signal to the touch processing module 40. 40, the received touch signal T1 is parsed, a corresponding coordinate point information is obtained through calculation, and transmitted to the central processing unit 10 for subsequent processing, and the central processing unit 10 receives the displayed display information D1. It is passed to the display screen 20, and the display screen 20 is commanded to output the display.
在本實施例中,觸控面板30主要是設置有一功能鍵32,功能鍵32是與中央處理器10電連接,功能鍵32用以提供操作者可以強制執行觸控面板30觸控校正的功能,當功能鍵32被觸發後可產生一控制訊號S1,並輸出至中央處理器10,經中央處理器10判定為功能鍵32所發出的控制訊號S1時,中央處理器10將發出一命令訊息C1至觸控校正模組50,要求觸控校正模組50執行一觸控校正程序,以藉由觸控校正程序的執行,更新觸控面板30上所具有的複數個感應點的電容基準值,藉此改善觸控面板30因受到溫度或周邊電磁雜訊的干擾而造成靈敏度下降的影響,而當觸控校正模組50執行完畢觸控校正程序後,將可相對應於各感應點產生出一校正值,該校正值將會被輸出儲存模組60予以儲存,以便於更新設定為新的電容基準值。 In the embodiment, the touch panel 30 is mainly provided with a function key 32. The function key 32 is electrically connected to the central processing unit 10, and the function key 32 is used to provide a function for the operator to forcibly perform the touch correction of the touch panel 30. When the function key 32 is triggered, a control signal S1 can be generated and output to the central processing unit 10. When the central processing unit 10 determines that the control signal S1 is sent by the function key 32, the central processing unit 10 will issue a command message. The touch correction module 50 is required to perform a touch correction process to update the capacitance reference value of the plurality of sensing points on the touch panel 30 by the execution of the touch correction program. Therefore, the touch panel 30 is improved in sensitivity due to temperature or peripheral electromagnetic noise, and when the touch correction module 50 performs the touch correction process, it can be generated corresponding to each sensing point. A correction value is generated, which will be stored by the output storage module 60 to facilitate updating to a new capacitance reference value.
在本實施例中,該觸控校正模組50可選擇以軟體或硬體的其中一種方式實施,其中當選擇以軟體的方式實施時,觸控校正模組50可以應用程式的形式預先安裝於儲存模組60,而透過中央處理器10進行控制及執行。 In this embodiment, the touch correction module 50 can be implemented in one of a software or a hardware manner. When the software module is selected to be implemented in a software manner, the touch correction module 50 can be pre-installed in the form of an application program. The storage module 60 is controlled and executed by the central processing unit 10.
在本實施例中的儲存模組60則可選擇以硬碟、SSD固態硬碟、快閃記憶體及動態隨機記憶體等中的任一者實施。 The storage module 60 in this embodiment can be implemented by any of a hard disk, an SSD solid state hard disk, a flash memory, and a dynamic random memory.
另請參閱第3圖所示,為本發明的觸控螢幕裝置的觸控校正方法的流程圖。如圖所示,在步驟S101中,當功能鍵被觸發後產生控制訊號輸出至中央處理器,中央處理器將發出控制命令,要求觸控校正模組啟動一觸控校正程序,以便於對觸控面板的電容值基準值進行校正,並進入下一步驟S102。 Please refer to FIG. 3 , which is a flowchart of a touch correction method of the touch screen device of the present invention. As shown in the figure, in step S101, when the function key is triggered to generate a control signal output to the central processing unit, the central processor will issue a control command, and the touch correction module is required to activate a touch correction program to facilitate the touch. The capacitance value reference value of the control panel is corrected, and the process proceeds to the next step S102.
在步驟102中,觸控校正模組將會先發出一訊息要求在顯示螢幕上顯示一警示畫面的訊息,藉此警示及要求操作者將其雙手或其他物體遠離於觸控面板的表面,藉此避免人體的手指或其他物體上所攜帶的靜電荷影響觸控校正程序執行的結果,並進入下一步驟S103。 In step 102, the touch correction module will first send a message requesting to display a warning screen on the display screen, thereby alerting and requiring the operator to keep his hands or other objects away from the surface of the touch panel. Thereby, the static charge carried on the finger or other object of the human body is prevented from affecting the result of the touch correction program execution, and the process proceeds to the next step S103.
在步驟S103中,判定警示畫面的顯示時間是否已經過一預設時間長度,例如預設的時間長度可以選擇7~10秒之範圍,當顯示時間達到預設時間則進入下一步驟S104,否則回到上一步驟S102,如此藉以提供充裕的時間供操作者可以確實觀視到上述警示畫面的訊息。 In step S103, it is determined whether the display time of the warning screen has passed a preset time length. For example, the preset time length may select a range of 7 to 10 seconds. When the display time reaches the preset time, the process proceeds to the next step S104, otherwise Returning to the previous step S102, it is provided to provide sufficient time for the operator to actually view the message of the above warning screen.
在步驟S104中,觸控校正模組開始執行觸控校正程序, 針對觸控面板上的複數感應點的電容值進行校正,經校正完成後,則將依據每個感應點產生出新的一校正值,並進入下一步驟S105。 In step S104, the touch correction module starts to execute the touch correction process. The capacitance value of the complex sensing point on the touch panel is corrected. After the calibration is completed, a new correction value is generated according to each sensing point, and the process proceeds to the next step S105.
在步驟S105中,經觸控校正程序所產生的校正值將在此一步驟中暫存於儲存模組內,並進入下一步驟S106。 In step S105, the correction value generated by the touch correction program will be temporarily stored in the storage module in this step, and the process proceeds to the next step S106.
在步驟S106中,本發明的校準方法具有一判斷機制,用以判斷觸控校正程序是否重複執行達到一預設的校正次數,以取得多次的校正值於後續進行判定,在本發明的校準方法中所預設的校正次數最佳者至少為3次,當判斷結果已達到預設的校正次數,則進入下一步驟S107,否則回到步驟S104重新再執行一次觸控校正程序。 In step S106, the calibration method of the present invention has a judging mechanism for determining whether the touch correction program is repeatedly executed to reach a preset number of corrections, so as to obtain a plurality of correction values for subsequent determination, in the calibration of the present invention. The preset number of corrections is preferably at least 3 times. When the determination result has reached the preset number of corrections, the process proceeds to the next step S107, otherwise, the process returns to step S104 to perform the touch correction process again.
在步驟S107中,將判別暫存的各校正值之間的差異值是否超過一預設的門檻值,如判別為是,代表觸控校正程序的執行過程中可能有受到環境因素或人為誤觸的影響,而造成當時的使用環境並非穩定,所經校正產生的校正值將失真而不具有參考性,如此將回到步驟S104重新再執行觸控校正程序,否則將進入下一步驟S108。 In step S107, it is determined whether the difference value between the temporarily stored correction values exceeds a preset threshold value. If the determination is yes, it may be affected by environmental factors or human errors during the execution of the touch correction program. The influence of the touch causes the current use environment to be unstable, and the correction value generated by the correction will be distorted without reference, so that the process returns to step S104 to re-execute the touch correction process, otherwise the process proceeds to the next step S108.
在步驟S108中,選擇最後一次暫存的校正值做為更新後的校正值,並進行儲存及更新,以做為下一次觸控操作時的電容基準值。 In step S108, the last temporarily stored correction value is selected as the updated correction value, and stored and updated as the capacitance reference value in the next touch operation.
藉由上述可知,本發明由於是將觸控校正程式的執行改成由觸發設置於觸控面板上的功能鍵來強制執行,如此當觸控面 板的觸控靈敏度不佳時,可以避免造成觸控校正程序不易於被執行的缺點,且執行過程中也不會受到桌面上各種已開啟視窗阻檔的影響。 As can be seen from the above, the present invention is implemented by changing the execution of the touch correction program to a function key triggered by the touch panel, so that the touch surface is When the touch sensitivity of the board is not good, the disadvantage that the touch correction program is not easily executed can be avoided, and the execution process is not affected by various open window blocks on the desktop.
綜上所陳,僅為本發明之較佳實施例而已,並非用以限定本發明;凡其他未脫離本發明所揭示之精神下而完成的等效修飾或置換,均應包含於後述申請專利範圍內。 The invention is not intended to limit the invention, and other equivalent modifications or substitutions that are not departing from the spirit of the invention are intended to be included in the appended claims. Within the scope.
1‧‧‧觸控螢幕裝置 1‧‧‧Touch screen device
2‧‧‧非觸控區 2‧‧‧ non-touch area
3‧‧‧觸控區 3‧‧‧ touch area
4‧‧‧功能鍵 4‧‧‧ function keys
5‧‧‧圖像 5‧‧‧ images
10‧‧‧中央處理器 10‧‧‧Central processor
20‧‧‧顯示螢幕 20‧‧‧ Display screen
30‧‧‧觸控面板 30‧‧‧Touch panel
32‧‧‧功能鍵 32‧‧‧ function keys
40‧‧‧觸控處理模組 40‧‧‧Touch Processing Module
50‧‧‧觸控校正模組 50‧‧‧Touch Correction Module
60‧‧‧儲存模組 60‧‧‧ storage module
S101~S108‧‧‧觸控校正方法的流程圖 Flow chart of S101~S108‧‧‧ touch correction method
第1圖為本發明的觸控螢幕裝置的外觀示意圖。 FIG. 1 is a schematic view showing the appearance of a touch screen device of the present invention.
第2圖為本發明的觸控螢幕裝置的功能方塊圖。 FIG. 2 is a functional block diagram of the touch screen device of the present invention.
第3圖為本發明的觸控螢幕裝置的觸控校正方法的流程圖。 FIG. 3 is a flow chart of a touch correction method of the touch screen device of the present invention.
1‧‧‧觸控螢幕裝置 1‧‧‧Touch screen device
2‧‧‧非觸控區 2‧‧‧ non-touch area
3‧‧‧觸控區 3‧‧‧ touch area
4‧‧‧功能鍵 4‧‧‧ function keys
5‧‧‧圖像 5‧‧‧ Images
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TW201120692A (en) * | 2009-12-04 | 2011-06-16 | Acer Inc | Touch control electric apparatus capable of calibration function and operating method thereof |
TWM413134U (en) * | 2011-05-12 | 2011-10-01 | Accusys Inc | Multi-purpose touch control liquid crystal display system |
TWM434992U (en) * | 2011-11-14 | 2012-08-01 | Mastouch Optoelectronics Technologies Co Ltd | Touch screen device with calibration function |
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