200928928 六、發明說明： 【發明所屬之技術領域】 本發明係有關於一種觸控式螢幕’尤指一種利用led紅外線 光波受阻斷反射之原理所形成之觸控式螢幕。 、’ 【先前技術】 . 按，習用觸控式螢幕的感應裝置主要係為數位電容式結構， 包括利用兩感應層分別設置於觸控螢幕板體之下方與上^了並將 兩感應層分別接地並連接至一控制電路，運作時藉由使用者的手 指或導體碰觸的瞬間產生一電容效應，可藉由電容值的變化確定 手指或導體的位置，然此種以電容值變化來確定手指或導體位置 的觸控式螢幕，常有因承受反覆應力而變形導致損害的缺點。 後來，則有人再研發出利用紅外線受阻斷以探測手指或導體 位置的觸控式螢幕，然此種結構所需要的是成排或線性的許多一 對一發射與接收對沿著螢幕設置才可感知觸控體的介入，此種結 構又有成本較高的缺失。 因此為有效解決上述缺失’本案發明人乃研發出此一利用LEI) 紅外線光波阻斷之反射原理所形成觸控式螢幕裝置。 【發明内容】 ，本發明係提供觸控螢幕系統改良，主要係於螢幕之左右兩侧 適當位置處分別設有LED紅外線發射接收器，該發射接收器之發 射端係可發射出LED紅外線光波並於螢幕表面布滿球狀波 (Spherical Wave)，當該螢幕表面在接收到觸控體的侵入時，其 球狀波(Spherical Wave)會受到干擾阻斷後並予以反射，其反射 之波段則為發射接受器之接收端所感應，接收端在接收到反射之 訊號後會透過核心邏輯單元運算，而分析出觸控體的位置座標， 除了具有製造成本低廉、訊號傳輸迅速的優勢外，還可改進習用 電容式觸控躲因承纽覆應力崎形損⑽缺失，有效增進觸 控式螢幕使用壽命及達到使用普及化等功效。 【實施方式】 3 200928928 請參閱第-圖所示，主要包括有一螢幕⑴，在該勞幕⑴的200928928 VI. Description of the Invention: [Technical Field] The present invention relates to a touch screen, in particular to a touch screen formed by the principle of blocking reflection of LED infrared light waves. , [Previous technology]. According to the touch-sensitive screen, the sensing device is mainly a digital capacitive structure, which includes two sensing layers respectively disposed below and above the touch screen body, and the two sensing layers are respectively separated. Grounding and connecting to a control circuit, a capacitance effect is generated by the moment when the user's finger or the conductor touches, and the position of the finger or the conductor can be determined by the change of the capacitance value, and this is determined by the change of the capacitance value. Touch screens with finger or conductor positions often have the disadvantage of being damaged by deformation stress. Later, some people developed a touch screen that uses infrared light to block the position of the finger or conductor. However, this structure requires a number of one-to-one transmission and reception pairs arranged in a row or linearly along the screen. It can sense the intervention of the touch body, and this structure has a high cost. Therefore, in order to effectively solve the above-mentioned shortcomings, the inventor of the present invention developed a touch screen device formed by the reflection principle of the infrared light wave block using LEI. SUMMARY OF THE INVENTION The present invention provides an improved touch screen system, which is mainly provided with LED infrared emitting receivers at appropriate positions on the left and right sides of the screen, and the transmitting end of the transmitting receiver can emit LED infrared light waves and The surface of the screen is covered with a spherical wave (Spherical Wave). When the surface of the screen receives the intrusion of the touch object, the Spherical Wave is blocked by the interference and reflected, and the reflection band is Inducted by the receiving end of the transmitting receiver, after receiving the reflected signal, the receiving end will calculate the position coordinates of the touch body through the core logic unit, in addition to the advantages of low manufacturing cost and rapid signal transmission. It can improve the conventional capacitive touch-type hiding factor, and the loss of the stress-resistance (10) is reduced, which effectively improves the service life of the touch screen and achieves universal use. [Embodiment] 3 200928928 Please refer to the figure - picture, mainly including a screen (1), in the curtain (1)
兩側端適當位置處分別設有LED紅外線發射接收器（n)，該LED 紅外線發射接受器（11)係同時具有發射Led紅外線光波及接收光 波的裝置，稱之為發射端（m)及接收端（112)，利用兩端之發射 端an)所發射出led紅外線光波可形成球狀波(Spherical Wave) • 布滿整個螢幕而成形影像訊號感測網，當有觸控體（13)侵入此一 衫像訊號感測網中時，其LK)紅外線光波會受到阻斷並予以反射 而使接收知（112)能接收到被反射之光波以分別掏取出目標影 像，並將該等目標影像傳輸至與其電性連接之LED紅外線影像訊 ❹號擷取電路(2)中，在經過雜訊濾波器⑶後傳輸至影像分析電路 0«中，藉由核心邏輯運算(41)的方式將兩目標影像進行比較，並 進行計算以定位兩目標影像所對應之觸控體（13)於該螢幕(1)上 之位置。 而上述之核心邏輯運算方式就是在光波自發射端〇 11；)發射 後碰觸到觸控體（13)而被反射為接收端（112)接收為止，有一個發 射與接收間的時間差，將該時差乘以光速即可算出觸控體（13)與 LED紅外線光波發射接收器（11)間的距離，以發射端（111)及接收 端（112)的中間處為中心點，以計算出之距離為半徑形成一個四分 Q 之一圓，而兩端的LED紅外線發射接收器（11)皆以此方式分別形 成有四分之一圓，兩個四分之一圓在螢幕（1)上會形成一個交錯 點，該交錯點在經過運算後即被得知為觸控體（13)在螢幕上的座 標位置。 清參閱第一圖所示，第二圖為另一較佳實施例，主要係將原 本存在一構件中的發射端（111)及接收端（112)分開設置處於螢幕 上不同位置處，且兩個發射端（ηι)與兩個接收端（112)係分別以 對角線的方式設置；換言之，每一個發射端（111)與每一個接收端 (11^係位於螢幕（1)之同一側，而對角設置之兩個發射端（ill)同 樣能發射出LED紅外線光波而使螢幕(1)布滿球狀波(Spherical Wave) ‘有觸控體（13)侵入該球狀波(Spherical Wave)内予以阻 200928928 斷波長時，被阻斷之波長會形成反射並為接收端（112)所感應接收 並形成目標影像’該目標影像被傳輸至與其電性連接之LED紅外 線影像訊號擷取電路(2)中，在經過雜訊濾波器（3)後傳輸至影像 分析電路(4)中，藉由核心邏輯運算(41)的方式將兩目標影像進行 比較，並進行計算以定位兩目標影像所對應之觸控體（13)於該 幕（1)上之位置。 〇 〇 而前述核心邏輯運算方式與第一圖所述相同，同樣是在光波 自發射端（111)發射後碰觸到觸控體(13)而被反射為接收端（112) 接，為止，有一個發射與接收間的時間差，將該時差乘以 可算出觸控體(13)與LED紅外線光波發射接收器⑴）間的距 以發射端（111)及接收端⑴2)的中間處為中心點 :為:?形成一個四分之一圓，兩個四分之一幕= 之: 位Ϊ交錯點在_馨後即被得知為_體(^在 本案_叙脑，得有鮮本麟人姆 =未有之作紐增進功_具料繼，纽 t ^刖 因 2述之實施例尚不足以涵蓋本案所欲保護 此提出申請專利範圍如附。 文<寻利fe圍， 【圖式簡單說明】 圖 係為本發__幕魏改良之結構系統圖 ，-圖·係為本發明觸控螢幕系統改良之另 【主要元件符號說明】 貢例結構系統 螢幕1 LED紅外線發射接收器u 發射端111 接收端112 觸控體13 紅外線影像訊號擷取電路2 雜訊渡波器3 ，：：：：：： ^ 5An LED infrared emitting receiver (n) is respectively disposed at appropriate positions on both sides, and the LED infrared emitting receiver (11) has a device for emitting Led infrared light waves and receiving light waves, which is called a transmitting end (m) and receiving The end (112) can generate a spherical wave by using the LED infrared light emitted from the transmitting end of the two ends. (Spherical Wave) • The image signal sensing network is formed by covering the entire screen, and the touch object (13) is invaded. When the shirt is in the signal sensing network, the LK) infrared light wave is blocked and reflected so that the receiving light (112) can receive the reflected light wave to extract the target image separately, and the target images are captured. It is transmitted to the LED infrared image signal extraction circuit (2) electrically connected thereto, and is transmitted to the image analysis circuit 0« after passing through the noise filter (3), and the core logic operation (41) is used to The target images are compared and calculated to locate the position of the touch object (13) corresponding to the two target images on the screen (1). The above-mentioned core logic operation mode is that after the light wave is emitted from the transmitting end ;11;) after the launch touches the touch body (13) and is reflected as the receiving end (112), there is a time difference between transmission and reception, The time difference is multiplied by the speed of light to calculate the distance between the touch body (13) and the LED infrared light wave transmitting receiver (11), and the center point of the transmitting end (111) and the receiving end (112) is used as a center point to calculate The distance is a radius of one quarter Q, and the LED infrared emitting receivers (11) at both ends are respectively formed with a quarter circle in this way, and two quarter circles are on the screen (1). An interlaced point is formed, which is known as the coordinate position of the touch object (13) on the screen after the operation. Referring to the first figure, the second figure is another preferred embodiment, which mainly divides the transmitting end (111) and the receiving end (112) which are originally present in one component at different positions on the screen, and two The transmitting end (ηι) and the two receiving ends (112) are respectively arranged diagonally; in other words, each transmitting end (111) and each receiving end (11^ are located on the same side of the screen (1) The two emitters (ill) of the diagonal setting can also emit LED infrared light waves to make the screen (1) full of spherical waves (Spherical Wave). The touch body (13) invades the spherical wave (Spherical) When the wave breaks the wavelength of 200928928, the blocked wavelength will reflect and receive and form a target image for the receiving end (112). The target image is transmitted to the LED infrared image signal electrically connected thereto. In the circuit (2), after passing through the noise filter (3), it is transmitted to the image analysis circuit (4), and the two target images are compared by the core logic operation (41), and calculation is performed to locate the two targets. The touch body (13) corresponding to the image is on the screen (1) The position of the above core logic is the same as that described in the first figure. Similarly, after the light wave is emitted from the transmitting end (111), it touches the touch body (13) and is reflected as the receiving end (112). After that, there is a time difference between transmission and reception, and the time difference is multiplied to calculate the distance between the touch body (13) and the LED infrared light wave transmitting receiver (1) to the transmitting end (111) and the receiving end (1) 2). The middle point is the center point: for: ? to form a quarter circle, two quarters of the screen =: The position of the interlaced point is known as _ body after _ Xin (^ in this case _ Xu brain, There must be a fresh basal man = no new work for the promotion of _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _利fe围, [Simple diagram of the diagram] The diagram is the structural system diagram of the __ 幕魏改善, - Figure is the improvement of the touch screen system of the invention [the main component symbol description] tribute structure system screen 1 LED infrared transmitting receiver u transmitting end 111 receiving end 112 touch body 13 infrared image signal capturing circuit 2 Noise mixer 3 ,:::::: ^ 5