1332178 I 099年08月20日梭正替换頁1 六、發明說明： 【發明所屬之技術領咸】 [0001] 本發明係關於，種觸控面板，特別涉及一種影像偵測式 觸控面板。 【先前技術】 [0002] 許多電手産品用觸控面板作爲輪入方式。目前市場上之 觸控面板主要爲電阻式或電容式觸控面板。 [00〇3] 電阻式觸控面板主要包含上下兩組銦錫氧化物（I T0)導電 層、間隙物及電極。其使用銦錫氡化物玻璃爲基板，上 面疊合一層銦錫氧化物薄膜，中間散佈絕緣之間隔裝置 (SPACER)支撐使上下板不會因距離貼近而籩成導通形成 感應，邊緣再印上銀電極提供欠軸著向和γ轴方向之電壓 ，於兩層導電層之間形成均勻之電場。使用時利用施加 於觸摸點之壓力使該點處兩層導電層接觸而導通，控制 器偵測到電場發生之變化，對電訊號進行A/D轉換後得 到X和Y兩個方向上之座標，計算出接觸點位置 ，從而進 行輸入H⑽时、防汙健，㈣於較爲惡劣之 情況下工作’價格便宜；主要缺點係耐刮性、防火性差 ’上板與下板之銦錫氧化物導電層影響整體觸控面板透 光性。 [0004] 電容式觸控面板係利用排列之透明電極與人體之間之靜 電結。所産生<電谷變化，從而産生料電流來檢測觸 摸點座標1容式觸鮮把透明之金屬層塗於玻璃板上 作爲導電體’於觸摸屏四邊有狹長之電極，電壓作用於 榮幕感應區之四個角落，於導電體内形成—個低電壓交 094125765 表單蹁號A0101 第3頁/共13頁 0993299320-0 1332178 _l __ _ 099年08月20日修正替換頁 流電場。當手指觸摸於金屬層上時，就會改變觸點之電 容，電場之改變引發電流，四邊電極發出之電流會流向 觸點，控制器通過依電流距四個角落比例之不同可以確 定觸摸點之位置資訊。其透光率和其他性能指標均較電 阻式觸控面板爲佳，然而電容式觸控面板由於電容隨溫1332178 I, August 20, 099, the replacement of the shuttle page 1 VI. Description of the invention: [Technology of the invention] [0001] The present invention relates to a touch panel, and more particularly to an image detection type touch panel. [Prior Art] [0002] Many electric hand products use a touch panel as a wheeling method. Currently, touch panels on the market are mainly resistive or capacitive touch panels. [00〇3] The resistive touch panel mainly comprises two sets of indium tin oxide (I T0) conductive layers, spacers and electrodes. The indium tin antimonide glass is used as a substrate, and a thin film of indium tin oxide is laminated thereon, and the spacer (SPACER) is interspersed in the middle to prevent the upper and lower plates from being turned into conduction due to the close proximity, and the edges are printed with silver. The electrodes provide a voltage in the direction of the under-axis and the gamma-axis, forming a uniform electric field between the two conductive layers. In use, the pressure applied to the touch point is used to make the two conductive layers contact and conduct at the point, and the controller detects the change of the electric field, and performs A/D conversion on the electrical signal to obtain coordinates in both directions of X and Y. Calculate the position of the contact point, so that when input H (10), anti-fouling, (4) work under less severe conditions 'cheap price; main disadvantages are scratch resistance, poor fire resistance' indium tin oxide on the upper and lower plates The conductive layer affects the transparency of the overall touch panel. [0004] A capacitive touch panel utilizes an electrostatic junction between a transparent electrode arranged in alignment with a human body. The resulting <electric valley change, thereby generating a material current to detect the touch point coordinates 1 capacitive touch, applying a transparent metal layer to the glass plate as an electrical conductor' has electrodes on the four sides of the touch screen, and the voltage acts on the screen The four corners of the zone are formed in the conductor - a low voltage 094125765 form nickname A0101 Page 3 / 13 pages 0993299320-0 1332178 _l __ _ 099 August 20th revised replacement page flow field. When the finger touches the metal layer, the capacitance of the contact is changed. The change of the electric field induces a current, and the current from the four electrodes flows to the contact. The controller can determine the touch point by the ratio of the current to the four corners. Location information. Its light transmittance and other performance indicators are better than resistive touch panels, but capacitive touch panels due to capacitance with temperature
I 度、濕度或接地情況之不同而變化，故其穩定性較差， 容易受到外界因素干擾，並可能產生漂移現象；同時必 須克服靜電對電容之影響，所以於電路與結構設計上較 爲困難，價格也較高。 【發明内容】 [0005] 有鑑於此，有必要提供一種結構簡單、綜合性能良好之 影像偵測式觸控面板。 [0006] —種影像偵測式觸控面板，包括一光源；一稜鏡，具有 八射面、第一介面和第二介面，所述光源鄰近入射面裝 設；一間隔裝置；一彈性薄膜，所述間隔裝置設於該彈 性薄膜與棱鏡第一介面之間，該彈性薄膜上設有高反射 率或高吸收率之平面；一影像接收器，鄰近所述第二介 面裝設。.I degree, humidity or grounding conditions vary, so its stability is poor, it is easy to be interfered by external factors, and may cause drift phenomenon; at the same time, it must overcome the influence of static electricity on the capacitance, so it is difficult to design the circuit and structure. The price is also higher. SUMMARY OF THE INVENTION [0005] In view of the above, it is necessary to provide an image sensing type touch panel having a simple structure and good overall performance. [0006] An image detecting type touch panel includes a light source; a stack having an eight-faceted surface, a first interface, and a second interface, the light source being disposed adjacent to the incident surface; a spacer device; an elastic film The spacer device is disposed between the elastic film and the first interface of the prism, wherein the elastic film is provided with a plane with high reflectivity or high absorption rate; and an image receiver is disposed adjacent to the second interface. .
[0007] 與習知技術相比，所述影像偵測式觸控面板採用光學元 件構成觸控面板之主體，與常見之電阻式或電容式觸控 面板相比，具有良好之透光性，不怕靜電等外界因素干 擾，克服了上述兩種觸控面板最主要之缺點；同時本發 明不需要安裝精密複雜之觸控電路來計算觸控點之座標 ，結構簡單，成本低廉。 【實施方式】 094125765 表單編號A0101 第4頁/共13頁 0993299320-0 1332178 [0008] [0009] 099年08月20 Η庚正替換頁 請參閱第一圖、第二圖及第三圖，本發明之較佳實施例 包括一照明光源1、一稜鏡2、一間隔裝置3、一彈性薄膜 4、一定量之介質5、一影像接收器6、一數位訊號處理器 7和一中央控制器8;其中照明光源1係發光二極體或燈泡 :稜鏡2大致呈直角梯形體，其包括一入射面2〇、第一介 面21與第二介面22 ’其中第一介面21與第二介面22相互 平行，入射面20連接第一介面21與第二介面22 ;所述照 明光源1鄰近入射面20裝設，照明光源1發出之光可以被 導入第一介面21，再由第一介面21反射到第二介面22 ; 所述間隔裝置3圍繞第一介面21邊緣裝設，使用膝水或環 氧樹脂等枯合劑固定於第一介面:21上；所述彈性薄膜4與 間隔裝置3之間亦使用膠水或環氧樹脂等粘合劑固定，彈 性薄膜4平行於第一介面21裝設，將第—介面21覆蓋且與 第一介面21之間存在空隙，且間隔裝置3封閉第一介面21 與彈性薄膜4間空隙之邊緣；彈性薄膜4與第一介面21之 間之空隙中封裝有均勻之介質5 ;影像接收器6安裝於第 二介面22，可以接收第一介面22上反射回之光訊號；數 位訊號處理器7與影像接收器6蓮接；中央控制器8與數位 訊號處理器7連接。 彈性薄膜4具有内表面41與外表面42，其中内表面41與稜 鏡2之第一介面21相對，其上具有複數個微小之突起411 ;所述突起411之大小尺度爲數百微米，於彈性薄膜4之 外表面42受到壓力時，突起411頂端可以與第一介面以接 觸，且突起411頂端與第一介面22之接觸面處爲對光線具 有高反射率或高吸收率之微小平面41U。 094125765 表單編號A0101 第5頁/共13頁 0993299320-0 1332178 _^ 099年08月20日核正替換頁 [0010] 介質5係透光性良好之液體（如水或其他透光性良好之液 體）或氣體（可以係高壓氣體），以增加彈性薄膜4受壓後 之彈性回復力，其充滿彈性薄膜4内表面41與棱鏡2之第 一介面22之間之空隙。 [0011] 影像接收器6係互補金屬氧化物半導體感測器（CMOS IM- .Compared with the prior art, the image detecting type touch panel adopts an optical component to form a main body of the touch panel, and has good light transmittance compared with a common resistive or capacitive touch panel. It is not afraid of interference from external factors such as static electricity, and overcomes the most important shortcomings of the above two types of touch panels. At the same time, the present invention does not need to install sophisticated touch circuits to calculate coordinates of touch points, and has a simple structure and low cost. [Embodiment] 094125765 Form No. A0101 Page 4 / Total 13 Page 0993299320-0 1332178 [0008] [0009] August 20, 2008, please refer to the first, second and third figures. A preferred embodiment of the invention includes an illumination source 1, a port 2, a spacer device 3, an elastic film 4, a quantity of medium 5, an image receiver 6, a digital signal processor 7, and a central controller. 8; wherein the illumination source 1 is a light-emitting diode or a bulb: the crucible 2 is substantially a right-angled trapezoid body, and includes an incident surface 2〇, a first interface 21 and a second interface 22′, wherein the first interface 21 and the second interface 22 is parallel to each other, and the incident surface 20 is connected to the first interface 21 and the second interface 22; the illumination source 1 is disposed adjacent to the incident surface 20, and the light emitted by the illumination source 1 can be introduced into the first interface 21, and then the first interface 21 Reflecting to the second interface 22; the spacer device 3 is disposed around the edge of the first interface 21, and is fixed on the first interface 21 by using a mixture of knee water or epoxy resin; the elastic film 4 and the spacer device 3 It is also fixed with adhesive such as glue or epoxy resin. The film 4 is disposed parallel to the first interface 21, the first interface 21 is covered and there is a gap between the first interface 21, and the spacer 3 closes the edge of the gap between the first interface 21 and the elastic film 4; the elastic film 4 and A uniform medium 5 is encapsulated in the gap between the first interfaces 21; the image receiver 6 is mounted on the second interface 22, and can receive the optical signal reflected back on the first interface 22; the digital signal processor 7 and the image receiver 6 The central controller 8 is connected to the digital signal processor 7. The elastic film 4 has an inner surface 41 and an outer surface 42, wherein the inner surface 41 is opposite to the first interface 21 of the crucible 2, and has a plurality of minute protrusions 411 thereon; the protrusions 411 have a size of several hundred micrometers. When the outer surface 42 of the elastic film 4 is under pressure, the top end of the protrusion 411 can be in contact with the first interface, and the contact surface of the top end of the protrusion 411 and the first interface 22 is a micro plane 41U having high reflectance or high absorption rate to light. . 094125765 Form No. A0101 Page 5 of 13 0993299320-0 1332178 _^ August 20, 2008 Nuclear Replacement Page [0010] Medium 5 is a liquid with good light transmission (such as water or other liquid with good light transmittance) Or a gas (which may be a high pressure gas) to increase the elastic restoring force of the elastic film 4 after being pressed, which fills the gap between the inner surface 41 of the elastic film 4 and the first interface 22 of the prism 2. [0011] The image receiver 6 is a complementary metal oxide semiconductor sensor (CMOS IM- .
AGE SENSOR)或電荷耦合器件感測器（CCD IMAGE SENSOR)。 [0012] 請參閱第五圖，當本發明之較佳實施例處於未工作狀態 時，彈性薄膜4之外表面42未受到壓力，照明光源1所發 出之光從棱鏡入射面20射入，一部分光線通過稜鏡2之第 一介面21處到達均勻之介質5内，另一部分光線則被稜鏡 2第一介面21之反射到第二介面22，被影像接收器6接收 ;由於第一介面21之光學性質係均勻之，不會出現某處 .反射率突變之情況，從而使得光線經過反射與折射後於 整個第一介面21上之分佈也較爲均勻，影像接收器6不會 偵測到明暗情況突變之情形，中央處理器8不會作出反應 〇 [0013] 請參閱第四圖及第六圖，當本發明之較佳實施例處於工 作狀態時，手指或接觸筆接觸彈性薄膜4之外表面42，壓 力可以使彈性薄膜4内表面41上之微小突起411通過其頂 端之微小平面4111與稜鏡2之第一介面21接觸；此時從棱 鏡2之入射面20射入之光線中未到達接觸面處之反射光仍 然較均勻地傳播，到達接觸面處之光則被接觸面處突起 411頂端與棱鏡2之第一介面21直接接觸之微小平面4111 反射（當該等微小平面具有高光線反射率之情形）或吸收（ 094125765 表單編號A0101 第6頁/共13頁 0993299320-0 1332178 099年08月20日修正替換頁 當該等微小平面具有高光線吸收率之情形），由於微小平 面4111之光線反射率或光線吸收率較高，使接觸面處之 反射光訊號大小發生突變。突變之反射光訊號到達第二 介面22後於影像接收器6上産生與未受按壓區域明暗程度 區別明顯之較亮點（接觸面處反射率較高時）或較暗點（接 觸面處吸收率較高時），從而構成影像訊號。接收器6上 之影像訊號經過數位訊號處理器7處理，最後由中央控制 器8對相應觸控作出反應，計算出按壓點之位置，完成相 應指令。 [0014] 綜上所述，本發明符合發明專利之要件，爰依法提出專 利申請。惟，以上所述者僅為本發明冬較佳實施例，自 不能以此限制本案之申請專利範圍。舉凡熟悉本案技藝 之人士，於援依本案發明精神所作之等效修飾或變化， 皆應包括於以下之申請專利範圍内。 【圖式簡單說明】 [0015] 第一圖係爲本發明之較佳實施例未工作時之立體示意圖 〇 [0016] 第二圖係爲本發明之較佳實施例工作時之立體示意圖。 [0017] 第三圖係爲本發明之較佳實施例未工作時之原理示意圖 〇 [0018] 第四圖係爲本發明之較佳實施例工作時之原理示意圖。 [0019] 第五圖係第三圖中V處之放大示意圖。 [0020] 第六圖係第四圖中VI處之放大示意圖。 094125765 表單編號A0101 第7頁/共13頁 0993299320-0 1332178 099年08月20日修正替换頁 【主要元件符號說明】 [0021] (本發明） [0022] 照明光源：1 [0023] 棱鏡：2 [0024] 間隔裝置：3 [0025] 彈性薄膜：4 [0026] 介質：5 [0027] 影像接收器：6 [0028] 數位訊號處理器：7 [0029] 中央控制器：8 [0030] 入射面：20 [0031] 第一介面：21 [0032] 第二介面：22 [0033] 内表面：41 [0034] 外表面：42 [0035] 突起：411 [0036] 微小平面：4111 094125765 表單編號A0101 第8頁/共13頁 0993299320-0AGE SENSOR) or CCD IMAGE SENSOR. Referring to FIG. 5, when the preferred embodiment of the present invention is in an inoperative state, the outer surface 42 of the elastic film 4 is not subjected to pressure, and the light emitted by the illumination source 1 is incident from the prism incident surface 20, and a part thereof. The light passes through the first interface 21 of the crucible 2 to reach the uniform medium 5, and the other portion of the light is reflected by the first interface 21 of the crucible 2 to the second interface 22, which is received by the image receiver 6; The optical properties are uniform, and there is no such thing as a sudden change in reflectance, so that the light is reflected and refracted and distributed evenly over the entire first interface 21, and the image receiver 6 does not detect it. In the case where the light and dark conditions are abrupt, the central processing unit 8 does not react. [0013] Referring to the fourth and sixth figures, when the preferred embodiment of the present invention is in operation, the finger or the contact pen contacts the elastic film 4. The outer surface 42, the pressure, allows the minute protrusions 411 on the inner surface 41 of the elastic film 4 to contact the first interface 21 of the crucible 2 through the micro-plane 4111 at the top end thereof; at this time, the light incident from the incident surface 20 of the prism 2 is Not arrived The reflected light at the contact surface still propagates more evenly, and the light reaching the contact surface is reflected by the tiny plane 4111 where the tip of the protrusion 411 at the contact surface is in direct contact with the first interface 21 of the prism 2 (when the micro planes have high light reflection) Rate case) or absorption (094125765 Form No. A0101 Page 6 / Total 13 Page 0993299320-0 1332178 Modified on August 20, 2008, when the micro-planes have a high light absorption rate), due to the tiny plane 4111 The light reflectance or light absorption rate is high, causing a sudden change in the size of the reflected light signal at the contact surface. When the reflected light signal of the mutation reaches the second interface 22, a brighter point (higher reflectance at the contact surface) or a darker point (absorption rate at the contact surface) is formed on the image receiver 6 differently from the unpressed area. When it is high, it constitutes an image signal. The image signal on the receiver 6 is processed by the digital signal processor 7, and finally the central controller 8 reacts to the corresponding touch to calculate the position of the pressed point and complete the corresponding command. [0014] In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Any person who is familiar with the skill of the case, equivalent modifications or changes made by the company in accordance with the spirit of the invention shall be included in the scope of the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0015] The first drawing is a perspective view of a preferred embodiment of the present invention when it is not in operation. [0016] The second drawing is a perspective view of a preferred embodiment of the present invention. 3 is a schematic diagram showing the principle of the preferred embodiment of the present invention when it is not in operation. [0018] The fourth figure is a schematic diagram of the principle of the preferred embodiment of the present invention. [0019] The fifth figure is an enlarged schematic view of a portion V in the third figure. [0020] The sixth figure is an enlarged schematic view of the VI in the fourth figure. 094125765 Form No. A0101 Page 7 / Total 13 Page 0993299320-0 1332178 Correction replacement page on August 20, 099 [Main component symbol description] [0021] (Invention) [0022] Illumination source: 1 [0023] Prism: 2 [0024] Spacer: 3 [0025] Elastic film: 4 [0026] Medium: 5 [0027] Image Receiver: 6 [0028] Digital Signal Processor: 7 [0029] Central Controller: 8 [0030] Incident plane : 20 [0031] First interface: 21 [0032] Second interface: 22 [0033] Inner surface: 41 [0034] Outer surface: 42 [0035] Protrusion: 411 [0036] Tiny plane: 4111 094125765 Form number A0101 8 pages / total 13 pages 0993299320-0