201128479 【發明所屬之技術領域】 六、發明說明： [0001] 本發明係有關於一種觸控面板，特別是指一種偵測多 點觸控之位置偵測裝置。 [0002] 【先前技術】 觸控面板（Touch Panel)起源於1 970年代，美國 軍方為軍事用途而發展，1 980年代移轉給民間使用，進 而發展為各式用途。現階段由於述求使用便利，所以過 〇 去傳統輸入裝置如鍵盤（Keyboard)、滑鼠（Mouse) 、軌跡球（Trackball)、轨跡點（Track Point)等 產品，已經無法符合市場需求，而觸控面板因具備簡單 操作、容易使用的特性，所以1 999年開始被廣泛應用在 各項消費性電子終端產品上，由過去配角的身分，一躍 成為關鍵零組件之一，甚至將朝向整合性產業方向發展 ，因此備受各界期待。 觸控面板為一貼附在映像管或液晶顯示器上的輸入裝 〇 置，其功能在於使一般民眾藉由指示器（Pointer )，例 如手指或觸控筆，輕壓顯示器面板上的選項，即可完成 資料傳輸或閱讀螢幕上的訊息。觸控面板的應用範圍相 當廣泛，包括：（1 )可攜式電子產品及通訊產品：如P D A、平板電腦、數位攝影機與3 G手機等；（2)金融或 商業用途：如提款機、銷售系統與遠端視訊會議；（3) 工業用途：工廠自動化控制系統、中央監控系統、工作 站作業系統；（4)公共資訊用途：機場、車站或商場的 導覽服務、簡報說明及資料查詢等。 099104911 現今，用於偵測指示器壓觸面板之座標係有多種方式 表單編號A0101 第3頁/共29頁 0992009204-0 201128479 ，例如電容式偵測與電阻式偵測，即一般所稱的電阻式 觸控面板與電容式觸控面板。此外，現今更有利用光學 方式偵測指示器壓觸面板之座標。電阻式觸控面板是一 種觸壓感測裝置，指示器必須施力向下壓觸電阻式觸控 面板以產生電阻變化，控制電路才能偵測出指示器壓觸 面板之座標。當指示器施力向下壓觸面板時，係會導致 電子裝置受到衝擊甚至用力過大而推倒電子裝置。此外 ，由於電阻式觸控面板必須設置透明電阻層於顯示面板 ，因此會降低面板顯示的亮度。 電容式觸控面板，係設置具有金屬層之玻璃於顯示面 板。指示器觸壓電容式觸控面板時，控制電路係會量測 到觸控位置之電容值，進而轉換為位置座標。然而，電 容式觸控面板僅能用於導電材質之指示器，例如手指， 所以電容式觸控面板於使用上係有一定之限制。此外， 由於電容式觸控面板必須設置具有金屬層之玻璃於顯示 面板，所以因此會降低面板顯示的亮度。 光學式觸控面板，係藉由影像感測器擷取面板之表面 的觸控影像，進而藉由影像處理器處理所擷取之觸控影 像，而計算出指示器壓觸面板之座標。但是，現今光學 式觸控面板仍具有如何清晰擷取觸控影像之問題，若無 法擷取到清晰之觸控影像，影像處理器即無法精確算出 指示器壓觸面板之座標。由於光學觸控面板具有很多優 點，所以近年來發展很多型態之光學式觸控面板，例如 美國申請案公開第2004/0 149892A1號與200 9/0146973 號，以及美國專利第7274352B2號與7538759B2號。然 而，上述習用光學式觸控面板之偵測裝置係採用多個光 099104911 表單編號A0101 第4頁/共29頁 0992009204-0 201128479 ❹ 源照射面板之表面，如此會提高成本與耗電量。 另外，美國申請案公開第2007/008991 5Α1號，其利 用一鏡頭、一影像感測器與一菱鏡，鏡頭與影像感測器 之間設置菱鏡，鏡頭顯示之觸控影像經由菱鏡折射至影 像感測器，以供影像感測器擷取。由於，此習用技術利 用菱鏡將觸控影像折射至影像感測器，所以成本較高， 且結構較為複雜。此外，此習用技術之設計方式，並無 法適用於具反射材質的指示器。 此外，現今大部分光學式觸控面板僅能偵測指示器進 行單點觸控之位置，而當指示器進行多點觸控時，現今 光學式觸控面板係無法準確偵測多點觸控之位置，其會 發生偵測到之觸控位置結果並不相同於指示器實際觸控 到面板之位置，而產生偵測錯誤的情形。現今光學式觸 控面板無法精確偵測多點觸控之位置的主要原因，係在 於偵測多點觸控時係會產生鬼點（Ghost point)，而 鬼點為錯誤點，其會被誤判為實際觸控點，所以才會發 ο 生債測錯誤的情形發生，而降低偵測準確性。 因此，本發明即針對上述問題而提出一種偵測多點觸 控之位置偵測裝置，不僅可改善上述習用缺點，又可達 到降低成本、減少厚度與耗電量並增加準確性之目的， 以解決上述問題。 • [0003] 【發明内容】 本發明之目的之一，在於提供一種偵測多點觸控之位 置偵測裝置，其具有三個偵測模組，並設置於觸控面板 且分別位於不同位置，而在不同位置分別擷取觸控面板 099104911 之表面的一第一觸控影像、一第二觸控影像與一第三觸 表單編號A0101 第5頁/共29頁 0992009204-0 201128479 控影像，以依據第一觸控影像、第二觸控影像與第三觸 控影像，而得知指示器壓觸觸控面板之座標，如此即可 消除偵測多點觸控所產生之鬼點而增加偵測多點觸控位 置之準確性。 本發明之目的之一，在於提供一種偵測多點觸控之位 置偵測裝置，其於觸控面板設置三個偵測模組，而每一 偵測模組藉由平面鏡顯示觸控面板之表面的觸控影像， 以供影像感測器擷取，如此即可擷取到觸控影像，以達 到降低成本之目的。 本發明之目的之一，在於提供一種偵測多點觸控之位 置偵測裝置，其由於影像感測器之設置方式為橫躺而平 行於觸控面板，所以可減少觸控面板之整體厚度。 本發明之目的之一，在於提供一種偵測多點觸控之位 置偵測裝置，其藉由設置光傳輸元件於觸控面板之邊緣 ，以傳輸光源所產生之光線，而均勻照射於觸控面板之 表面，讓偵測模組可清晰擷取到觸控面板之表面的觸控 影像，以可精確得知指示器壓觸面板之位置。 本發明偵測多點觸控之位置偵測裝置，其包含至少一 光源、一第一偵測模組、一第二偵測模組與一第三偵測 模組，光源設置於觸控面板，並產生光線而照射於觸控 面板之表面，第一偵測模組、第二偵測模組與第三偵測 模組設置於觸控面板並位於不同位置，以在不同位置分 別擷取觸控面板之表面的一第一觸控影像、一第二觸控 影像與一第三觸控影像，如此依據位於不同位置之第一 偵測模組、第二偵測模組與第三偵測模組所擷取之第一 觸控影像、第二觸控影像與第三觸控影像即可得知一指 099104911 表單編號A0101 第6頁/共29頁 0992009204-0 201128479 示器壓觸觸控面板之至少一位置，以達到降低成本、減 少厚度與耗電量之目的，且可消除偵測多點觸控所產生 之鬼點（Ghost point)而增加偵測多點觸控位置之準 確性。 此外，本發明更包含至少一光傳輸元件，其連接光源 並設置於觸控面板之至少一邊緣用以傳輸該光線，如此 運用光傳輸元件傳輸光線而照射觸控面板之表面，可有 效降低成本，且提高光線照射觸控面板之表面的均勻度 〇 Ο [0004] Ο 099104911 【實施方式】 茲為使貴審查委員對本發明之技術特徵及所達成之 功效更有進一步之瞭解與認識，謹佐以較佳之實施例圖 及配合詳細之說明，說明如後： 首先，請參閱第一圖，第一圖係本發明之一較佳實施 例之偵測多點觸控之位置偵測裝置設置於觸控面板的上 視圖。如圖所示，本發明觸控面板之位置偵測裝置係包 含至少一光源20、一第一偵測模組30、一第二偵測模組 35與一第三偵測模組37，光源20設置於一觸控面板10之 邊緣。於此實施例中，兩光源20係設置於觸控面板10之 一長邊緣的兩端，以用於產生光線而照射於觸控面板10 之表面。第一偵測模組30、第二偵測模組35與第三偵測 模組37皆設置於觸控面板10，並位於不同位置。 此實施例中，第一偵測模組30與第二偵測模組35分別 設置於觸控面板10之一邊緣，以擷取觸控面板表面之一 第一觸控影像與一第二觸控影像，而第三偵測模組37設 置於第一偵測模組3 0與第二偵測模組3 5之間以擷取觸控 表單編號A0101 第7頁/共29頁 0992009204-0 201128479 面板表面之一第三觸控影像，而供影像處理器（圖未示 )依據位於不同位置之第一偵測模組3〇、第二偵測模組 35與第三偵測模組37所擷取到之觸控影像，以及第一偵 測模組30、第二偵測模組35與第三偵測模組37之所在位 置’計算出一指示器（Pointer)壓觸觸控面板10之座 標’進而傳送至系統主機，以執行對應之系統功能。本 發明藉由位於不同位置之第一偵測模組30、第二偵測模 組35與第三偵測模組37所擷取到三個觸控影像，係可消 除景> 像處理器於進行計算觸控位置所.產生之鬼點，而精 確得知指示器壓觸觸控面板1 〇之位置。上述指示器例如 為使用者之手指或者觸控筆於此實施例中，第一偵測 模組30、第二偵測模組35與第三偵測模組37分別設置於 觸控面板1〇之一長邊緣的兩端。上述第一偵測模組30、 第二偵測模組35與第三偵測模組37設置於觸控面板1 〇之 位置僅為本發明之其一實施例，並不限定本發明之第一 偵測模組3 0、第二偵測模組3 5與第三偵測模組3 7所設置 之位置必須於此。 本發明為了讓光源20之光線可均勻照射於觸控面板10之 表面’更可包含有至少一光傳輸元件21。於此實施例中 ，觸控面板10之三個周緣係設置有光傳輪元件21，光傳 輪元件21連接於光源20，用於傳輸光線而均勻照射觸控 面板10之表面。本實施例之光傳輸元件21之一實施例可 為壓克力，而光源20之一較佳實施例可為一LED燈。由於 本發明利用較少之光源2〇即可均勻照射觸控面板10之表 面’所以相較於習用技術必須使用多個光源，本發明係 可降低成本與降低耗電量。 099104911 第8頁/共29頁 表單編號A0101 201128479 請參閱第二圖，係本發明之另一較佳實施例之位置偵 測裝置設置於觸控面板的上視圖。如圖所示，此實施例 不同於上一實施例在於，此實施例之觸控面板10更加設 有兩個光源20，其可設置於觸控面板10之另一長邊緣的 - 兩端，也就是四個光源20分別設置於觸控面板10之四個 .角落，並連接設置於觸控面板10之三邊緣的複數光傳輸 元件21，以增加光線照射觸控面板10的亮度。本實施例 主要是運用於大面積之觸控面板10，而可增設光源20於 觸控面板10。本實施例之光傳輸元件21之一實施例可為 〇 光纖（Opt ica 1 Fiber )。 請參閱第三圖，係本發明之又一較佳實施例之位置偵 測裝置設置於觸控面板的上視圖。此實施例採用三個光 傳輸元件21且為壓克力，且光傳輸元件21之内表面白色 ，以將背面光集中於觸控面板10之表面。此實施例不同 於第一圖實施例在於，此實施例具有三個光傳輸元件21 ，並於觸控面板10之下方之光傳輸元件21的兩邊更設有 光源2 0，以增加線照射觸控面板1 0的亮度°本實施例主 〇 要是運用於大面積之觸控面板10，而可增設光源20於觸 控面板10。 請參閱第四圖，係本發明之一較佳實施例偵測觸控位 置的示意圖。其顯示兩個實際觸控點1^1與1^2以及兩個 鬼點6?1與0?2，實際觸控點1^1與1^2為指示器實際壓觸 - 該觸控面板10的觸控點，而鬼點6?1與0?2為影像處理器 於進行計算觸控位置所產生之鬼點，其並非為指示器實 際壓觸該觸控面板10的觸控點。於此實施例中，由於指 示器實際壓觸觸控面板10兩個位置，所以第一偵測模組 099104911 表單編號A0101 第9頁/共29頁 0992009204-0 201128479 30所擷取之第一觸控影像會顯示有兩個觸控點，而會得 到第一偵測模組3〇相對於實際觸控點Ri>i與之兩個角 度0RP11與0RP21。同理，第二债測模組35所擷取之第二 觸控影像也會顯示有兩個觸控點，並得到第二偵測模組201128479 [Technical Field] The invention relates to a touch panel, and more particularly to a position detecting device for detecting multi-touch. [0002] [Previous Technology] The Touch Panel originated in the 1970s, and the US military developed for military use. In the 1980s, it was transferred to civilian use and developed into various uses. At this stage, due to the convenience of use, traditional input devices such as keyboards, mice, trackballs, and track points have failed to meet market demands. Because of its simple operation and easy-to-use characteristics, the touch panel has been widely used in various consumer electronic terminal products since 999. It has become one of the key components and has even become integrated. The development of the industry has attracted much attention from all walks of life. The touch panel is an input device attached to the image tube or the liquid crystal display. The function of the touch panel is to enable the general public to lightly press an option on the display panel by using a pointer, such as a finger or a stylus. Data transfer or reading on the screen can be completed. Touch panels are used in a wide range of applications, including: (1) portable electronic products and communication products: such as PDAs, tablets, digital cameras and 3G mobile phones; (2) financial or commercial uses: such as cash machines, Sales system and remote video conferencing; (3) Industrial use: factory automation control system, central monitoring system, workstation operating system; (4) public information use: navigation services, briefing instructions and data inquiry for airports, stations or shopping malls, etc. . 099104911 Nowadays, there are many ways to detect the coordinate of the indicator's pressure touch panel. Form No. A0101 Page 3 / 29 Page 0992009204-0 201128479 , for example, capacitive detection and resistance detection, which is generally called resistance Touch panel and capacitive touch panel. In addition, optical coordinates are now used to detect the coordinates of the indicator's pressure-sensitive panel. The resistive touch panel is a touch-sensing device. The indicator must apply a force to the resistive touch panel to generate a change in resistance. The control circuit can detect the coordinates of the indicator's pressure-sensitive panel. When the indicator is pressed down against the panel, it can cause the electronic device to be impacted or even overpowered to push the electronic device down. In addition, since the resistive touch panel must be provided with a transparent resistive layer on the display panel, the brightness of the panel display is lowered. A capacitive touch panel is provided with a metal layer of glass on a display panel. When the indicator touches the capacitive touch panel, the control circuit measures the capacitance value of the touch position and converts it into a position coordinate. However, capacitive touch panels can only be used for indicators of conductive materials, such as fingers, so capacitive touch panels are limited in their use. In addition, since the capacitive touch panel must be provided with a metal layer of glass on the display panel, the brightness of the panel display is lowered. The optical touch panel calculates the coordinates of the indicator pressure touch panel by capturing the touch image on the surface of the panel by the image sensor and processing the captured touch image by the image processor. However, today's optical touch panels still have the problem of how to capture the touch images clearly. If the clear touch images cannot be captured, the image processor cannot accurately calculate the coordinates of the indicator pressure touch panels. Since optical touch panels have many advantages, many types of optical touch panels have been developed in recent years, such as U.S. Patent Application Publication Nos. 2004/0149892A1 and No. 20009/0146973, and U.S. Patent Nos. 7,274,352 B2 and 7,538,759 B2. . However, the above-mentioned conventional optical touch panel detection device uses a plurality of lights. 099104911 Form No. A0101 Page 4 of 29 0992009204-0 201128479 ❹ The surface of the panel is illuminated, which increases the cost and power consumption. In addition, U.S. Patent Application Publication No. 2007/008991 No. 5, which utilizes a lens, an image sensor and a prism, a lens is arranged between the lens and the image sensor, and the touch image of the lens is refracted via a mirror. To the image sensor for image sensor capture. Because this conventional technology uses a magnifying mirror to refract the touch image to the image sensor, the cost is high and the structure is complicated. In addition, the design of this conventional technology cannot be applied to indicators with reflective materials. In addition, most optical touch panels can only detect the position of the indicator for single touch. When the indicator is multi-touch, today's optical touch panels cannot accurately detect multi-touch. In the position, the detected touch position result is not the same as the position where the indicator actually touches the panel, and a detection error occurs. The main reason why optical touch panels cannot accurately detect the position of multi-touch is that Ghost point is generated when multi-touch is detected, and ghost points are wrong points, which will be misjudged. For the actual touch point, it will only send out the situation of the debt measurement error, and reduce the detection accuracy. Therefore, the present invention provides a multi-touch position detecting device for the above problems, which not only can improve the above-mentioned disadvantages, but also achieve the purpose of reducing cost, reducing thickness and power consumption, and increasing accuracy. Solve the above problem. [0003] [0003] One of the objectives of the present invention is to provide a multi-touch detection device with three detection modules, which are disposed on the touch panel and are located at different positions. And capturing a first touch image, a second touch image, and a third touch form number A0101 on the surface of the touch panel 099104911 at different positions, respectively, and controlling the image on the page 999/20099479 According to the first touch image, the second touch image, and the third touch image, the indicator is pressed against the coordinates of the touch panel, thereby eliminating the ghost point generated by detecting the multi-touch and increasing Detect the accuracy of multi-touch positions. One of the objectives of the present invention is to provide a multi-touch position detecting device, wherein three detecting modules are disposed on the touch panel, and each detecting module displays the touch panel by a flat mirror. The touch image of the surface is captured by the image sensor, so that the touch image can be captured to achieve the purpose of reducing the cost. One of the objectives of the present invention is to provide a position detecting device for detecting multi-touch. Since the image sensor is disposed in a horizontal manner and parallel to the touch panel, the overall thickness of the touch panel can be reduced. . One of the objectives of the present invention is to provide a position detecting device for detecting multi-touch, which is configured to transmit light generated by a light source to the periphery of the touch panel by uniformly illuminating the touch. The surface of the panel allows the detection module to clearly capture the touch image on the surface of the touch panel to accurately know the position of the indicator pressing panel. The present invention detects a multi-touch position detecting device, which includes at least one light source, a first detecting module, a second detecting module and a third detecting module, and the light source is disposed on the touch panel. The first detecting module, the second detecting module and the third detecting module are disposed on the touch panel and are located at different positions to respectively capture the different positions. a first touch image, a second touch image, and a third touch image on the surface of the touch panel, such that the first detection module, the second detection module, and the third detection are located at different positions The first touch image, the second touch image and the third touch image captured by the test module can be used to learn one finger 099104911 Form No. A0101 Page 6 / Total 29 Page 0992009204-0 201128479 Display pressure touch At least one position of the control panel to reduce cost, reduce thickness and power consumption, and eliminate the detection of Ghost points generated by multi-touch and increase the accuracy of detecting multi-touch positions Sex. In addition, the present invention further includes at least one optical transmission component connected to the light source and disposed on at least one edge of the touch panel for transmitting the light, so that the optical transmission component transmits light to illuminate the surface of the touch panel, thereby effectively reducing the cost. And improving the uniformity of the surface of the touch panel by light [0004] Ο 099104911 [Embodiment] In order to enable the reviewing committee to further understand and understand the technical features and effects of the present invention, The preferred embodiment and the detailed description are as follows: First, please refer to the first figure. The first figure is a multi-touch detecting position detecting device according to a preferred embodiment of the present invention. Top view of the touch panel. As shown in the figure, the position detecting device of the touch panel of the present invention comprises at least one light source 20, a first detecting module 30, a second detecting module 35 and a third detecting module 37, and a light source. 20 is disposed on an edge of a touch panel 10. In this embodiment, the two light sources 20 are disposed at two ends of a long edge of the touch panel 10 for generating light to illuminate the surface of the touch panel 10. The first detecting module 30, the second detecting module 35 and the third detecting module 37 are all disposed on the touch panel 10 and located at different positions. In this embodiment, the first detecting module 30 and the second detecting module 35 are respectively disposed on one edge of the touch panel 10 to capture one of the first touch image and the second touch of the touch panel surface. The third detection module 37 is disposed between the first detection module 30 and the second detection module 35 to capture the touch form number A0101. Page 7 / 29 pages 0992009204-0 A third touch image is displayed on the surface of the panel, and the image processing processor (not shown) is based on the first detection module 3, the second detection module 35, and the third detection module 37 at different positions. The touch image captured, and the location of the first detection module 30, the second detection module 35, and the third detection module 37 'calculate a pointer (Toucher) touch panel The coordinates of 10 are then transmitted to the system host to perform the corresponding system functions. The present invention captures three touch images by using the first detecting module 30, the second detecting module 35 and the third detecting module 37 at different positions, which can eliminate the scene image processor. To calculate the ghost point generated by the touch position, and accurately know the position where the indicator is pressed against the touch panel 1 . The first detection module 30, the second detection module 35, and the third detection module 37 are respectively disposed on the touch panel 1〇. One of the ends of the long edge. The position of the first detecting module 30, the second detecting module 35, and the third detecting module 37 disposed on the touch panel 1 is only one embodiment of the present invention, and is not limited to the present invention. The position set by the detection module 30, the second detection module 35, and the third detection module 37 must be. In order to allow the light of the light source 20 to uniformly illuminate the surface of the touch panel 10, the present invention may further include at least one optical transmission element 21. In this embodiment, the three peripheral edges of the touch panel 10 are provided with a light transmitting wheel component 21, and the light transmitting wheel component 21 is connected to the light source 20 for transmitting light to uniformly illuminate the surface of the touch panel 10. One embodiment of the optical transmission component 21 of the present embodiment can be acrylic, and one preferred embodiment of the light source 20 can be an LED lamp. Since the present invention can uniformly illuminate the surface of the touch panel 10 by using a small number of light sources 2, it is necessary to use a plurality of light sources as compared with the conventional technology, and the present invention can reduce cost and power consumption. 099104911 Page 8 of 29 Form No. A0101 201128479 Please refer to the second figure, which is a top view of a position detecting device according to another preferred embodiment of the present invention. As shown in the figure, the embodiment is different from the previous embodiment in that the touch panel 10 of the embodiment is further provided with two light sources 20, which can be disposed at the two ends of the other long edge of the touch panel 10. That is, the four light sources 20 are respectively disposed on the four corners of the touch panel 10, and the plurality of optical transmission elements 21 disposed on the three edges of the touch panel 10 are connected to increase the brightness of the light to the touch panel 10. This embodiment is mainly applied to a large-area touch panel 10, and a light source 20 can be added to the touch panel 10. An embodiment of the optical transmission element 21 of the present embodiment may be an Opt ica 1 Fiber. Referring to the third figure, a position detecting device according to still another preferred embodiment of the present invention is disposed on a top view of the touch panel. This embodiment employs three light transmitting elements 21 and is acryl, and the inner surface of the light transmitting element 21 is white to concentrate the back light on the surface of the touch panel 10. This embodiment is different from the first embodiment in that the embodiment has three optical transmission elements 21, and the light source 20 is further disposed on both sides of the optical transmission component 21 below the touch panel 10 to increase the line illumination. The brightness of the control panel 10 is mainly used in the large-area touch panel 10, and the light source 20 can be added to the touch panel 10. Please refer to the fourth figure, which is a schematic diagram of detecting a touch position according to a preferred embodiment of the present invention. It displays two actual touch points 1^1 and 1^2 and two ghost points 6?1 and 0?2, and the actual touch points 1^1 and 1^2 are the actual touch of the indicator - the touch panel The touch point of 10, and the ghost points 6?1 and 0?2 are the ghost points generated by the image processor for calculating the touch position, which is not the touch point of the touch panel 10 being actually pressed by the indicator. In this embodiment, since the indicator actually touches the two positions of the touch panel 10, the first detection module 099104911 form number A0101 page 9 / 29 pages 0992009204-0 201128479 30 first touch The control image will display two touch points, and the first detection module 3 will be obtained with respect to the actual touch point Ri>i with two angles 0RP11 and 0RP21. Similarly, the second touch image captured by the second debt measurement module 35 also displays two touch points and obtains the second detection module.
35相對於實際觸控點RP與RP之兩個角度0 叙A 2 RP12^' ur?22 ο 影像處理器依據第一觸控影像與第二觸控影像即可得 到此四個角度〜Ρ11、％21、％Ρ12與V22，並利用 相對於實際觸控點RP!之兩個角度與0 即可計 算出實際觸控點之座.標。同理，藉由相對於實際觸控 點RP£之兩個角度0 ^卟以與^㊉22，即可計算出實際觸 控點RP2之座標。但是，影像處亨器進行計算座標時，並 無法得知角度、%21、ΘΚΡ12與〜22是對應於 實際觸控點1^丨或1^2。所以，影像處理器即會依據此四 個角度0RP11、0ΚΡΖ1、0RP12與0卟22進行組合而計算 出所有可能性之四個座標，其1中ΐ兩値座標::即為實際觸控 點1^1與1^2之位置，另外兩個座標即為鬼點GP1與Gp之 位置。 本發明藉由第二债測模組3 7所擷取之第三觸控影像， 係可得知實際觸控點伙1與1^2之間的水平距離，如此即 可依據實際觸控點1^1與1^2之間的水平距離，而排除鬼 點〇?1與6?2 ’如此即可精確得知指示器實際壓觸該觸控 面板10之觸控點的位置。由上述說明可知，藉由本發明 位在不同位置之第一偵測模組30、第二偵測模組35與第 三偵測模組37所擷取到的第一觸控影像、第二觸控影像 與第三觸控影像，即可排除兩個鬼點〇?1與卩？2，而判斷 099104911 表單編號A0101 第10頁/共29頁 0992009204-0 201128479 實際觸控點1^1與1^2為指示器實際壓觸觸控面板10之位 置，以精確判斷出指示器實際壓觸觸控面板10之位置。 此外，本發明之第三债測模組3 7的積側角度Θ c之為 60~ 150度.。 參閱第五圖與第六圖，係本發明之一較佳實施例之第 一偵測模組與第二偵測模組之立體圖與前視圖。如圖所 示’本發明之偵測模組40包含一板體42、一平面鏡44與 一影像感測器46。此實施例所述之偵測模組40即為第_ 圖與第二圖所述之第一偵測模組30與第二偵測模組35。 平面鏡44設置於板體42上方，且平面鏡44呈一角度設置 於板體42，此角度為43度〜45度之間，而較佳角度為45 度。板體42更設有一開孔43，開孔43之位置相對於平面 鏡44。影像感測器46設置於板體42之下方而對應開孔43 。平面鏡44用於顯示觸控面板10之表面的觸控影像，而 影像感測器46經由開孔43而擷取到平面鏡44所顯示之觸 控影像，並傳輸所擷取到之觸控影像至影像處理器。指 示器壓觸觸控面板10時，因爲指示器會擋住光線，所以 被指示器所壓觸之位置即會產生一黑影，如此影像感測 器46所擷取到之觸控影像中也即會具有黑影，因此影像 處理器處理擷取到之觸控影像，而計算出觸控影像中之 黑影的位置，即可得知指示器壓觸觸控面板1 〇之座標。 由於本發明設置第一偵測模組30、第二偵測模組35與 第三偵測模組37於觸控面板10之不同位置，所以第一偵 測模組30、第二偵測模組35與第三偵測模組37可以在不 同位置擷取到不同角度之觸控影像’如此影像處理器即 可依據第一偵測模組30、第二偵測模組35與第三偵測模 099104911 表單鴂號A0101 第11頁/共29頁 0992009204-0 201128479 組37之所在位置與所擷取到之三觸控影像，而計算出觸 控影像中之黑影的所在位置，以得知指示器壓觸觸控面 板10之座標，並將觸控座標傳送至系統主機，以供系統 主機執行對應之系統功能。本發明之偵測模組40因為藉 由平面鏡44與影像感測器46即可擷取到觸控面板10之表 面的觸控影像，所以結構簡單，可降低成本，且因影像 感測器46以橫躺之方式而相對於平面鏡44，即影像感測 器46平行於觸控面板10之表面，而不需以直立方式設置 於觸控面板10，所以可有效降低觸控面板10之整體厚度 〇 第六圖僅為本發明之一實施例，並不限定本發明之實 施方式僅為第六圖實施方式。若不考量觸控面板10之整 體厚度下，影像感測器46可採用站立之方式設置於觸控 面板1 0，即影像感測器4 6與觸控面板10之表面呈垂直。 此外，本發明亦可不需要設置板體42，而直接將平面鏡 44設置於觸控面板10，而影像感測器46設置於平面鏡44 之下方。 復參閱第六圖，本發明之偵測模組40更包含有一鏡頭 48，其設置於板體42之下方，而位於平面鏡44之下方， 而影像感測器46則設置於鏡頭48之下方。鏡頭48用於調 整影像感測器4 6擷取平面鏡44所顯示之觸控影像的焦距 ，以讓影像感測器46可清晰擷取到平面鏡44所顯示之觸 控影像。鏡頭48係設置於一鏡頭殼體49内，而可上下移 動以調整焦距。 請閱第七圖，係本發明之一較佳實施例之第三偵測模 組的立體圖，如圖所示，此實施例不同於上一實施例在 099104911 表單編號A0101 第12頁/共29頁 0992009204-0 201128479 於平面鏡44呈一水平角度設置於板體42，且與板體42之 侧邊平行設置，而上一實施例之平面鏡44與板體42之側 邊係呈一角度，其餘結構於上一實施例相同。此實施例 所述之偵測模組40即為第一圖與第二圖所述之第三偵測 模組37。此外，其偵側角度之一實施例為60~ 150度。35 relative to the actual touch point RP and RP two angles 0 A 2 RP12 ^ ' ur? 22 ο The image processor can obtain the four angles according to the first touch image and the second touch image ~ Ρ 11, %21, %Ρ12 and V22, and use the two angles relative to the actual touch point RP! and 0 to calculate the seat point of the actual touch point. Similarly, the coordinates of the actual touch point RP2 can be calculated by comparing the two angles 0 ^ 卟 and ^ 10 22 with respect to the actual touch point RP. However, when the image finder is used to calculate the coordinates, it is not known that the angles, %21, ΘΚΡ12 and ~22 correspond to the actual touch points 1^丨 or 1^2. Therefore, the image processor will calculate the four coordinates of all possibilities according to the combination of the four angles 0RP11, 0ΚΡΖ1, 0RP12 and 0卟22, and the two coordinates in the middle: 2 is the actual touch point 1 The positions of ^1 and 1^2, the other two coordinates are the positions of ghost points GP1 and Gp. According to the third touch image captured by the second debt measuring module 37, the horizontal distance between the actual touch point 1 and 1^2 can be known, so that the actual touch point can be obtained according to the actual touch point. The horizontal distance between 1^1 and 1^2, and the elimination of ghost points? 1 and 6? 2 ' so that the position of the touch point of the touch panel 10 actually pressed by the indicator can be accurately known. According to the above description, the first touch image and the second touch captured by the first detecting module 30, the second detecting module 35 and the third detecting module 37 in different positions of the present invention are known. Control image and third touch image, you can eliminate two ghost points? 1 and 卩? 2, and judge 099104911 Form No. A0101 Page 10 / Total 29 Page 0992009204-0 201128479 The actual touch points 1^1 and 1^2 are the positions where the indicator actually touches the touch panel 10 to accurately determine the actual indicator The position of the touch panel 10 is pressed. In addition, the side angle Θ c of the third debt measuring module 37 of the present invention is 60 to 150 degrees. Referring to the fifth and sixth figures, a perspective view and a front view of a first detection module and a second detection module in accordance with a preferred embodiment of the present invention. As shown in the figure, the detecting module 40 of the present invention comprises a plate body 42, a plane mirror 44 and an image sensor 46. The detection module 40 of the embodiment is the first detection module 30 and the second detection module 35 described in the first and second figures. The plane mirror 44 is disposed above the plate body 42, and the plane mirror 44 is disposed at an angle to the plate body 42, the angle being between 43 degrees and 45 degrees, and the preferred angle being 45 degrees. The plate body 42 is further provided with an opening 43 which is positioned relative to the plane mirror 44. The image sensor 46 is disposed below the board 42 to correspond to the opening 43. The plane mirror 44 is used to display the touch image of the surface of the touch panel 10, and the image sensor 46 captures the touch image displayed by the plane mirror 44 through the opening 43 and transmits the captured touch image to Image processor. When the indicator is pressed against the touch panel 10, since the indicator blocks the light, a black shadow is generated at the position touched by the indicator, so that the touch image captured by the image sensor 46 is also There will be a black shadow, so the image processor processes the captured touch image and calculates the position of the black shadow in the touch image, so that the pointer of the touch panel 1 压 is known. Since the first detection module 30, the second detection module 35, and the third detection module 37 are disposed at different positions of the touch panel 10, the first detection module 30 and the second detection mode are provided. The group 35 and the third detecting module 37 can capture touch images of different angles at different positions. Thus, the image processor can be based on the first detecting module 30, the second detecting module 35, and the third detecting Mould 099104911 Form nickname A0101 Page 11 / Total 29 page 0992009204-0 201128479 Group 37 is located in the same position as the three touch images, and the position of the shadow in the touch image is calculated. The indicator indicator presses the coordinates of the touch panel 10 and transmits the touch coordinates to the system host for the system host to perform corresponding system functions. Since the detection module 40 of the present invention can capture the touch image of the surface of the touch panel 10 by the plane mirror 44 and the image sensor 46, the structure is simple, the cost can be reduced, and the image sensor 46 is used. The thickness of the touch panel 10 can be effectively reduced by lie on the plane mirror 44, that is, the image sensor 46 is parallel to the surface of the touch panel 10 without being disposed in an upright manner on the touch panel 10. The sixth drawing is only an embodiment of the present invention, and the embodiment of the present invention is not limited to the sixth embodiment. The image sensor 46 can be disposed on the touch panel 10 in a standing manner, that is, the image sensor 46 is perpendicular to the surface of the touch panel 10, regardless of the overall thickness of the touch panel 10. In addition, the present invention can also provide the panel 42 without directly providing the plane mirror 44 to the touch panel 10, and the image sensor 46 is disposed below the plane mirror 44. Referring to the sixth embodiment, the detection module 40 of the present invention further includes a lens 48 disposed below the panel 42 and below the plane mirror 44, and the image sensor 46 is disposed below the lens 48. The lens 48 is used to adjust the focal length of the touch image displayed by the plane mirror 44 so that the image sensor 46 can clearly capture the touch image displayed by the plane mirror 44. The lens 48 is disposed in a lens housing 49 and can be moved up and down to adjust the focal length. 7 is a perspective view of a third detecting module according to a preferred embodiment of the present invention. As shown in the figure, this embodiment is different from the previous embodiment in 099104911. Form No. A0101 Page 12 of 29 Pages 0992009204-0 201128479 are disposed at a horizontal angle to the plate body 42 at a horizontal angle, and are disposed in parallel with the side of the plate body 42, while the plane mirror 44 of the previous embodiment is at an angle to the side of the plate body 42. The structure is the same as in the previous embodiment. The detection module 40 described in this embodiment is the third detection module 37 described in the first figure and the second figure. In addition, one embodiment of the detection side angle is 60 to 150 degrees.
G Ο 請參閱第八圖，係本發明之一較佳實施例之位置偵測 裝的固定殼體與框架的立體圖。如圖所示，本發明更包 含一框架22與至少一固定殼體24，框架22設置於觸控面 板10 (參閱第二圖），而位於觸控面板10之邊緣。固定 殼體24設置於框架22，以用於固定光傳輸元件21於觸控 面板10之邊緣。固定殼體24呈半圓形，以固定光傳輸元 件21而可以供光線照射於顯示面板10之表面。此外，固 定殼體24之材質可為白色材料，以將背面光集中於觸控 面板10之表面。另外，框架22與固定殼體21可為一體成 形。本發明亦可不需設置框架22於觸控面板10，而直接 將固定殼體24設置於觸控面板10之邊緣，以固定光傳輸 元件21。 請參閱第九圖，係本發明之一較佳實施例之位置偵測 裝置的固定殼體與固定座的立體圖。如圖所示，本發明 更包含一固定座26與兩連接管27，連接管27設置於固定 座26之一側並連接固定殼體24 (參閱第八圖），固定座 26用於固定光源20。此實施例運用於採用兩個光源20之 方式，光傳輸元件21係插入於連接管27，而固定於固定 殼體24。光源20固定於固定座26而產生光線，光線經由 固定座26之側面照射於位於連接管27之光傳輸元件21， 099104911 光傳輸元件21即傳輸光線，而使得光線均勻照射於觸控 表單編號Α0101 第13頁/共29頁 0992009204-0 201128479 面板1 〇之表面。 請參閱第十圖，係本發明之另一較佳實施例之位置偵 測裝置的固定殼體與固定座的立體圖。此實施例係運用 於第二圖採用四個光源20之方式。如圖所示，固定座28 之一側面僅設有一連接管29，光源20固定於固定座28， 而第二圖之光傳輸元件21係插入於連接管29。 請一併參閱第十一Α圖與第十一Β圖，係本發明之一較 佳實施例之光傳輸元件的示意圖。如圖所示，本發明光 傳輸元件21更包含一反射邊緣23，其設置於光傳輸元件 21之角落，以反射光源20所產生的光線，使光源20能夠 均勻照射觸控面板10之表面，以增加所照射之亮度，此 實施例之光傳輸元件21可為壓克力，且反射邊緣23呈一 角度設置於觸控面板10，此角度為20度〜70度之間。本 發明之光傳輸元件21更可為如第十一B圖所示之具有複數 反射邊緣23分為20度〜40度和40度〜70度兩種角度，進 而加強光源20照射於觸控面板10表面之光線。 綜上所述，本發明偵測多點觸控之位置偵測裝置，其 包含至少一光源、第一偵測模組、第二偵測模組與第三 偵測模組，光源設置於觸控面板並產生光線而照射觸控 面板之表面，第一偵測模組、第二偵測模組與第三偵測 模組設置於觸控面板並位於不同位置，而在不同位置分 別擷取觸控面板之表面的第一觸控影像、第二觸控影像 與第三觸控影像，以依據第一觸控影像、第二觸控影像 與第三觸控影像而得知指示器壓觸觸控面板之至少一位 置。如此，即可以達到降低成本、減少厚度與耗電量之 目的，且可消除偵測多點觸控所產生之鬼點而增加偵測 099104911 表單編號A0101 第14頁/共29頁 0992009204-0 201128479 多點觸控位置之準確性。 故本發明實為一具有新穎性、進步性及可供產業上利 用者，應符合我國專利法專利申請要件無疑，爰依法提 出發明專利申請，析鈞局早曰賜准專利，至感為禱。 _ 惟以上所述者，僅為本發明一較佳實施例而已，並非 . 用來限定本發明實施之範圍，故舉凡依本發明申請專利 範圍所述之形狀、構造、特徵及精神所為之均等變化與 修飾，均應包括於本發明之申請專利範圍内。 八 【圖式簡單說明】 Ο [0005] 第一圖係本發明之一較佳實施例之偵測多點觸控之位置 偵測裝置設置於觸控面板的上視圖； 第二圖係本發明之另一較佳實施例之偵測多點觸控之位 置偵測裝置裝置於觸控面板的上視圖； 第三圖係本發明之又一較佳實施例之偵測多點觸控之位 置偵測裝置裝置於觸控面板的上視圖； 第三圖係本發明之一較佳實施例偵測觸控位置的示意圖 ❹ ， 第四圖係本發明之一較佳實施例之第一偵測模組與第二 偵測模組的立體圖； 第五圖係本發明之一較佳實施例之第一偵測模組與第二 偵測模組的前視圖； — 第六圖係本發明之一較佳實施例之第三偵測模組的立體 ' 圖； 第七圖係本發明之一較佳實施例之位置偵測裝置的固定 殼體與框架的立體圖； 第八圖係本發明之一較佳實施例之位置偵測裝置的固定 099104911 表單編號 A0101 第 15 頁/共 29 頁 0992009204-0 201128479 殼體與固定座的立體圖； 第九圖係本發明之另一較佳實施例之位置偵測裝置的固 定殼體與固定座的立體圖； 第十A圖係本發明之一較佳實施例之光傳輸元件的反射邊 緣的不意圖，以及 第十B圖係本發明之另一較佳實施例之光傳輸元件的反射 邊緣的示意圖。 【主要元件符號說明】 [0006] 10 觸控面板 20 .光源 21 光傳輪元件 22 框架 23 反射邊緣 24 固定殼體 26 固定座 27 連接管 28 固定座 29 連接管 30 第一偵測模組 35 第二偵測模組 37 第三偵測模組 40 偵測模組 42 板體 43 開孔 44 平面鏡 46 影像感測器 表單編號A0101 第16頁/共29頁 099104911 0992009204-0 20112847948 49 鏡頭鏡頭殼體 〇 〇 099104911 表單編號A0101 第17頁/共29頁 0992009204-0G Ο Referring to FIG. 8 , a perspective view of a fixed housing and a frame of a position detecting device according to a preferred embodiment of the present invention. As shown, the present invention further includes a frame 22 and at least one fixed housing 24. The frame 22 is disposed on the touch panel 10 (see the second figure) and is located at the edge of the touch panel 10. The fixed housing 24 is disposed to the frame 22 for fixing the optical transmission element 21 to the edge of the touch panel 10. The fixed casing 24 has a semicircular shape to fix the light transmitting member 21 and to illuminate the surface of the display panel 10. In addition, the material of the fixing case 24 may be a white material to concentrate the back light on the surface of the touch panel 10. Further, the frame 22 and the fixed housing 21 may be integrally formed. The present invention can also directly mount the fixed housing 24 on the edge of the touch panel 10 to fix the optical transmission component 21 without providing the frame 22 to the touch panel 10. Referring to FIG. 9, a perspective view of a fixed housing and a fixed seat of a position detecting device according to a preferred embodiment of the present invention. As shown in the figure, the present invention further includes a fixing base 26 and two connecting tubes 27. The connecting tube 27 is disposed on one side of the fixing base 26 and connected to the fixing housing 24 (refer to the eighth figure). The fixing base 26 is used for fixing the light source. 20. This embodiment is applied to a method in which two light sources 20 are used, and the optical transmission member 21 is inserted into the connecting tube 27 and fixed to the fixed casing 24. The light source 20 is fixed to the fixing base 26 to generate light, and the light is irradiated to the optical transmission component 21 located in the connecting tube 27 via the side of the fixing base 26. The optical transmission component 21 transmits light, so that the light is evenly irradiated on the touch form number Α0101. Page 13 of 29 0992009204-0 201128479 Panel 1 〇 surface. Referring to the tenth figure, a perspective view of a fixed housing and a fixed seat of a position detecting device according to another preferred embodiment of the present invention. This embodiment is applied in a manner that four light sources 20 are employed in the second figure. As shown in the figure, only one connecting tube 29 is provided on one side of the fixing base 28, the light source 20 is fixed to the fixing base 28, and the optical transmission element 21 of the second drawing is inserted into the connecting tube 29. Please refer to the eleventh and eleventh drawings, which are schematic views of optical transmission elements of a preferred embodiment of the present invention. As shown in the figure, the optical transmission component 21 of the present invention further includes a reflective edge 23 disposed at a corner of the optical transmission component 21 to reflect the light generated by the light source 20, so that the light source 20 can uniformly illuminate the surface of the touch panel 10. In order to increase the brightness of the illumination, the optical transmission component 21 of this embodiment may be acryl, and the reflective edge 23 is disposed at an angle to the touch panel 10 at an angle of between 20 degrees and 70 degrees. The optical transmission component 21 of the present invention may further have two angles of 20 to 40 degrees and 40 to 70 degrees as shown in FIG. 11B, and the light source 20 is illuminating the touch panel. 10 surface light. In summary, the present invention detects a multi-touch position detecting device, which includes at least one light source, a first detecting module, a second detecting module, and a third detecting module, and the light source is disposed at the touch The control panel generates light and illuminates the surface of the touch panel. The first detection module, the second detection module and the third detection module are disposed on the touch panel and are located at different positions, and are respectively captured at different positions. The first touch image, the second touch image, and the third touch image on the surface of the touch panel are used to learn the indicator touch according to the first touch image, the second touch image, and the third touch image. At least one position of the touch panel. In this way, the purpose of reducing cost, reducing thickness and power consumption can be achieved, and the detection of multi-touch generated ghost points can be eliminated and detection is increased. 099104911 Form No. A0101 Page 14 / Total 29 Page 0992009204-0 201128479 The accuracy of the multi-touch position. Therefore, the present invention is a novelty, progressive and available for industrial use, and should conform to the patent application requirements of China's patent law. Undoubtedly, the invention patent application is filed according to law, and the analysis bureau grants patents as early as possible. . The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, so that the shapes, structures, features, and spirits described in the claims are equally. Variations and modifications are intended to be included within the scope of the invention. [0005] The first figure is a top view of a multi-touch detecting position detecting device according to a preferred embodiment of the present invention, and the second drawing is the present invention. Another preferred embodiment of the present invention detects a multi-touch position detecting device disposed on a top view of the touch panel. The third figure is a position for detecting multi-touch in another preferred embodiment of the present invention. The first embodiment of the present invention is a first embodiment of the preferred embodiment of the present invention. The fourth embodiment is a first embodiment of the preferred embodiment of the present invention. A perspective view of a module and a second detection module; a fifth view is a front view of a first detection module and a second detection module in accordance with a preferred embodiment of the present invention; A perspective view of a third detection module of a preferred embodiment; a seventh perspective view of a fixed housing and frame of a position detecting device according to a preferred embodiment of the present invention; Fixed position of the position detecting device of a preferred embodiment 099104911 Form No. A0101 Page 15 / Total 29 页 0992009204-0 201128479 A perspective view of a housing and a fixed seat; a ninth drawing is a perspective view of a fixed housing and a fixed seat of a position detecting device according to another preferred embodiment of the present invention; A schematic view of a reflective edge of an optical transmission component of a preferred embodiment, and a perspective view of a reflective edge of an optical transmission component of another preferred embodiment of the present invention. [Main component symbol description] [0006] 10 Touch panel 20. Light source 21 Light transmission wheel component 22 Frame 23 Reflecting edge 24 Fixed housing 26 Fixing seat 27 Connecting tube 28 Fixing seat 29 Connecting tube 30 First detecting module 35 Second detection module 37 third detection module 40 detection module 42 plate 43 opening 44 plane mirror 46 image sensor form number A0101 page 16 / 29 pages 099104911 0992009204-0 20112847948 49 lens lens housing 〇〇099104911 Form No. A0101 Page 17 / Total 29 Pages 0992009204-0