201122646 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明係關於一種觸控面板及觸控顯示裝置。 [0002] [先前技術] 隨著平板顯示技術之蓬勃發展及製造成本之曰益降低， 具有輻射低、厚度小、功耗低等優點之平板顯示裝置越 來越受到消費者之青睞，因此被廣泛地應用在電子產品 中。 [0003] 為了符合現代人對於更加便利、更加直觀之人機界面之 〇 需要，近年來市場上逐漸推出各種各樣具有觸控功能之 平板顯示裝置，即觸控顯示裝置。通常，觸控顯示裝置 可分為外置式及内嵌式兩種9其电，外置式觸控顯示裝 置在傳統之平板顯示裝置基礎上附加一觸控面板；而内 置式觸控顯示裝置是直接將觸控面板通過内嵌之方式整 合至顯示面板（比如液晶面板）之中。目前彖觸控面板種 類繁多’包括電阻式、電容式、紅外線式及表面聲波式 等多種類型》 [0004] 習知之觸控顯示裝置-般採用二維觸控技術，使用者可 以通過手指或者觸控筆向其觸控面板施加觸控動作以下 達操作命令。在被施加觸控動作時，該觸控顯示裝置内 部之功能模組可_出該馳動作所指向位置（即觸控位 )之平面（一維）座標’即χ座標及γ座標，並根據該平面 座標提供相應之控制訊髓制該觸控顯示裝置或者使用 該觸控顯示裝置之電子產品進行相應之操作。 [0005] 098146002 =:控技，裝置雖可實現直觀、方便 0982078466-0 201122646 地人機操作介面，不過其主要適用在平面顯示技術中。 隨著三維（立體）顯示技術之發展，先前技術中採用二維 觸控技術之觸控面板及觸控顯示裝置難以滿足三維顯示 技術之操控需要。 【發明内容】 [0006] 有鑑於此，有必要提供一種可實現三維觸控之觸控面板 及觸控顯示裝置。 [0007] —種觸控面板，其包括一第一電極層、一電介質層及一 第二電極層，其中該電介質層設置在該第一電極層及第 f) 二電極層之間，且該電介質層包括高分子分散液晶薄膜 〇 [0008] 一種觸控顯示裝置，其包括一觸控面板及一檢測電路， 該觸控面板包括一第一電極層、一電介質層及一第二電 極層，該電介質層設置在該第一電極層及第二電極層之 間，該電介質層包括高分子分散液晶材質，該檢測電路 連接到該第一電極層及第二電極層之一，且其用於檢測 C) 觸控位置之三維座標。 ' [0009] 與先前技術相比較，本發明之觸控面板及觸控顯示裝置 通過在該第一電極層及第二電極層之間之介電常數隨厚 度之變化而相對應地發生改變之電介質層，比如高分子 分散液晶薄膜，便可實現三維觸控，從而滿足使用者在 三維顯示技術之觸控操作需要。 【實施方式】 [0010] 請參閱圖1，其示意性地表示本發明觸控面板一種實施例 0982078466-0 098146002 表單編號A0101 第4頁/共22頁 201122646 之結構分解圖。該觸控面板1〇〇包括自下而上依次層疊設 置之第一基板11、第一電極層12、電介質層13、第二電 極層14及第二基板15。其中，該第二基板15之外表面（即 遠離該第二電極層14之表面）作為該觸控面板1〇〇之觸控 表面，使用者可通過該觸控表面向該觸控面板1〇〇施加觸 控動作，以向其下達操作命令。 [0011] ο 〇 [0012] [0013] 該第一基板11及第二基板15均為絕緣基板，其中，該第 二基板15在外力作用下可發生形變，比如，當使用者向 其觸控表面之某一位置施加一觸控動作時，該觸控動作 所指向之位置將朝該第一基板11方向發生凹陷。具體地 ’該第二基板15所採用之材質可以為以下材質之一：聚 對本一甲酸乙二脂（Ρ〇 1 y Ethy 1 ene Ter.ephtha 1 ate， PET)、聚碳酸脂（p〇iy Carbonate, PC) '聚曱基丙稀 酸甲脂（Poly Methyl Meth Acrylate, PMMA)、聚亞 醯胺（Poly Imide，PI)' 聚乙梯（p〇iy Ethylene， PE)。該第一基板11之材質可以與該第二基板相同。 請一併參閱圖2-4 ’其中圖2及3分別為該第一電極層12及 第二電極層14之平面結構示意圖，圖4為該第一電極層12 及第二電極層14合併示意圖。 該第一電極層12包括複數平行間隔設置之第一電極線121 ’該第二電極層14包括複數平面間隔設置並與該第一電 極線121相垂直之第二電極線141。具體地，在本實施例 中，該第一電極線121延第一方向（Y軸方向）延伸，該第 -一電極線141延第·一方向（X轴方向延伸）。由此，該第一 電極線121及該第二電極線141之間形成了複數交疊區域 098146002 表單編號A0101 第5頁/共22頁 0982078466-0 201122646 。假定該第一電極線121及該第二電極線丨41之線寬均為w ’則該交疊區域之面積S大約為W2。即，對於該觸控面板 100而言，該交疊區域之面積為一固定值。 [0014] 在該觸控面板1〇〇中，每個交疊區域可以作為一個觸控感 測點。並且，在每個交疊區域中，該第一電極線121、第 二電極線141及夾於二者之間之電介質層丨3相互配合形成 一父疊電容16。假定在該交疊區域中，該電介質層Μ之 "電常數為ε且其厚度為d，則該交叠電容16之電容值c 可以通過以下公式計算得出：c; es/47rkd，其中，1^為 介電常數，該電介質層13之介電常數ε是指沿該交疊電 容16之電場方向之介電常數，於本實施方式中，該電介 質層13之介電常數ε是指該電介質層13沿垂直方向之介 電常數。由於該交疊電容16之面積8為固定值，該交疊電 容之電容值C主要由該電介質層13在該交疊區域中之介電 常數ε及厚度d決定。 ........ ; - [0015] 本發明中，該電介質層1 3在外力作用下其厚度會發生改 變，比如：當使用者施加一觸搜動淋時，該電介質層13 之厚度將減小，並且，該電介質層13之介電常數e可隨 著其厚度之減小而增大。通過採用具有上述特性之材質 ，可使得該交疊電容16之電容值C隨該電介質層13厚度之 變化而相對應地發生改變。 [0016] 請一併參閱圖5，其為該電介質層13之結構示意圖，該電 介質層13可以為高分子分散液晶薄膜。該高分子分散液 晶薄膜主要包括高分子材質及液晶材質，其中該高分子 098146002 材質可以為對向列型（Twisted201122646 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a touch panel and a touch display device. [0002] [Prior Art] With the rapid development of flat panel display technology and the reduction of manufacturing cost, flat panel display devices with low radiation, small thickness, low power consumption and the like are increasingly favored by consumers, so Widely used in electronic products. [0003] In order to meet the needs of modern people for a more convenient and more intuitive human-machine interface, various flat panel display devices with touch functions, that is, touch display devices, have been gradually introduced in the market in recent years. Generally, the touch display device can be divided into two types: an external type and an in-line type. The external touch display device adds a touch panel to the conventional flat display device; and the built-in touch display device is directly The touch panel is integrated into a display panel (such as a liquid crystal panel) by means of in-line. At present, there are many types of touch panels, including resistive, capacitive, infrared, and surface acoustic wave types. [0004] The conventional touch display device generally uses two-dimensional touch technology, and the user can touch or touch The control pen applies a touch action to the touch panel to obtain an operation command. When the touch action is applied, the function module inside the touch display device can output the plane (one-dimensional) coordinate of the position (ie, the touch position) of the action, that is, the coordinate and the γ coordinate, and according to The planar coordinates provide corresponding control signals to the touch display device or electronic products using the touch display device for corresponding operations. [0005] 098146002 =: Control technology, the device can be intuitive and convenient. 0982078466-0 201122646 The man-machine interface, but it is mainly used in flat display technology. With the development of three-dimensional (stereo) display technology, the touch panel and the touch display device using the two-dimensional touch technology in the prior art are difficult to meet the control needs of the three-dimensional display technology. SUMMARY OF THE INVENTION [0006] In view of the above, it is necessary to provide a touch panel and a touch display device that can implement three-dimensional touch. [0007] A touch panel includes a first electrode layer, a dielectric layer, and a second electrode layer, wherein the dielectric layer is disposed between the first electrode layer and the f) second electrode layer, and the The dielectric layer includes a polymer dispersed liquid crystal film. [0008] A touch display device includes a touch panel and a detecting circuit. The touch panel includes a first electrode layer, a dielectric layer and a second electrode layer. The dielectric layer is disposed between the first electrode layer and the second electrode layer, the dielectric layer comprises a polymer dispersed liquid crystal material, and the detecting circuit is connected to one of the first electrode layer and the second electrode layer, and is used for Detect C) The three-dimensional coordinates of the touch position. [0009] Compared with the prior art, the touch panel and the touch display device of the present invention correspondingly change the dielectric constant between the first electrode layer and the second electrode layer with a change in thickness. A dielectric layer, such as a polymer-dispersed liquid crystal film, can realize three-dimensional touch, thereby satisfying the user's touch operation requirements in three-dimensional display technology. [Embodiment] [0010] Please refer to FIG. 1, which schematically shows an exploded view of an embodiment of the touch panel of the present invention. 0982078466-0 098146002 Form No. A0101 Page 4 of 22 201122646. The touch panel 1A includes a first substrate 11, a first electrode layer 12, a dielectric layer 13, a second electrode layer 14, and a second substrate 15 which are stacked in this order from bottom to top. The outer surface of the second substrate 15 (ie, the surface away from the second electrode layer 14) serves as a touch surface of the touch panel 1 . The touch panel can be used by the user through the touch surface. 〇 Apply a touch action to give an operation command to it. [0012] The first substrate 11 and the second substrate 15 are both insulating substrates, wherein the second substrate 15 can be deformed by an external force, for example, when the user touches the touch When a touch action is applied to a certain position of the surface, the position pointed by the touch action will be recessed toward the first substrate 11. Specifically, the material used in the second substrate 15 may be one of the following materials: poly(p-i thy Ethy 1 ene Ter. ephtha 1 ate, PET), polycarbonate (p〇iy) Carbonate, PC) 'Poly Methyl Meth Acrylate (PMMA), Poly Imide (PI)' p〇iy Ethylene (PE). The material of the first substrate 11 can be the same as the second substrate. Referring to FIG. 2-4, FIG. 2 and FIG. 3 are schematic diagrams showing the planar structure of the first electrode layer 12 and the second electrode layer 14, respectively, and FIG. 4 is a schematic diagram of the first electrode layer 12 and the second electrode layer 14 being merged. . The first electrode layer 12 includes a plurality of first electrode lines 121 ′ disposed in parallel. The second electrode layer 14 includes a plurality of second electrode lines 141 spaced apart from each other and perpendicular to the first electrode lines 121. Specifically, in the present embodiment, the first electrode line 121 extends in the first direction (Y-axis direction), and the first-electrode line 141 extends in the first direction (extending in the X-axis direction). Thereby, a plurality of overlapping regions 098146002 are formed between the first electrode line 121 and the second electrode line 141. Form No. A0101 Page 5 of 22 0982078466-0 201122646 . Assuming that the line widths of the first electrode line 121 and the second electrode line 41 are both w', the area S of the overlapping area is approximately W2. That is, for the touch panel 100, the area of the overlapping area is a fixed value. [0014] In the touch panel 1A, each overlapping area can serve as a touch sensing point. Moreover, in each of the overlapping regions, the first electrode line 121, the second electrode line 141, and the dielectric layer 夹3 sandwiched therebetween are coupled to each other to form a parent stack capacitor 16. It is assumed that in the overlap region, the dielectric constant of the dielectric layer is ε and its thickness is d, the capacitance value c of the overlap capacitor 16 can be calculated by the following formula: c; es/47rkd, wherein 1 is a dielectric constant, and the dielectric constant ε of the dielectric layer 13 refers to a dielectric constant along the direction of the electric field of the overlapping capacitor 16. In the present embodiment, the dielectric constant ε of the dielectric layer 13 means The dielectric layer 13 has a dielectric constant in the vertical direction. Since the area 8 of the overlapping capacitor 16 is a fixed value, the capacitance value C of the overlapping capacitance is mainly determined by the dielectric constant ε and the thickness d of the dielectric layer 13 in the overlapping region. [0015] In the present invention, the thickness of the dielectric layer 13 changes under the action of an external force, for example, when the user applies a touch search, the dielectric layer 13 The thickness will decrease, and the dielectric constant e of the dielectric layer 13 may increase as the thickness thereof decreases. By using the material having the above characteristics, the capacitance value C of the overlapping capacitor 16 can be correspondingly changed in accordance with the change in the thickness of the dielectric layer 13. [0016] Please refer to FIG. 5, which is a schematic structural view of the dielectric layer 13. The dielectric layer 13 may be a polymer dispersed liquid crystal film. The polymer dispersed liquid crystal film mainly comprises a polymer material and a liquid crystal material, wherein the polymer 098146002 material can be a nematic type (Twisted)
Nematic, TN )液晶具有 表單編號A0101 第6頁/共22頁 0982078466-0 201122646 [0017] Ο [0018] [0019] ❹ 垂直配向功能之材質。 具體地，該高分子分散薄膜可通過以下方式制取得到： 首先，將高分子預聚物與向列型液晶材質相混合；接著 ，對該高分子及液晶混合物進行聚合處理，在聚合過程 中，該高分子聚合物將與該液晶材質會相互分離；並且 ，在聚合處理完成之後，該液晶材質將以微滴方式分散 在該高分子材質内部。通過對上述聚合過程之工藝參數 控制，可使得該液晶微滴131呈圓球狀，且該液晶微滴 131之尺寸約為微米量級。 在該高分子分散液晶薄膜中，每個液晶微滴131包括複數 液晶分子。由於該高分子材質對該液晶材質具有垂直配 向功能，因此，在每個圓'球狀之液晶微滴131中，該液晶 分子將呈中心輻射排列。 當該電介質層13受到外力作用（比如使用者對該觸控面板 10 0施加觸控動作）時，如圖6所示，受該外力之影響，該 電介質層13在該外力指向之位置之厚度將變小，從而迫 使所述位置之液晶微滴131將發生形變（請參閱圖7)， 且形變之程度由該外力之大小決定。由此，該液晶微滴 131將從圓球狀變為橢球狀，由於該高分子材質對該液晶 材質具有垂直配向功能，當該液晶微滴131從圓球狀向橢 球狀轉變時，其内部之液晶分子之排列方式將從中心輻 射排列向垂直之平行排列過渡。另外，由於液晶分子具 有介電常數各向異性之特性，當該液晶微滴131内部之液 晶分子排列方式發生改變時，該電介質層13之介電常數 ε也將隨之發生變化。 098146002 表單編號Α0101 第7頁/共22頁 0982078466-0 201122646 [0020] 具體而言，當該電介質層13受到外力作用時，該外力所 指向位置之液晶微滴131將從圓球狀向橢球狀轉變，此將 導致該電介質層13在所述位置之沿垂直方向之介電常數 增大，即所述位置之介電常數ε增大。並且，該介電常 數ε之增大量與該液晶微滴131之形變程度相關，即，該 介電常數ε之增大量由該外力之大小所決定。 [0021] 根據公式C= ε s/4 π kd可以看出，當使用者向該觸控面 板施加觸控動作而導致該電介質層13在對應觸控位置之 厚度變小時，對於與該觸控位置相對應之交疊電容而言 ，夾在該第一電極線121及第二電極線141之間之電介質 之厚度d減小，該介電常數ε增大，由此使得該交疊電容 16之電容值C增大。並且，該電容值C之增大量是由該電 介質層13在該觸控位置之厚度減小量相對應的。 [0022] 基於以上結構，該觸控面板100中由該第一電極層12及第 二電極層14之間之相互交疊形成複數交疊電容16中，越 接近觸控動作所指向之位置之中心點，相對應之液晶微 滴131之形變程度越大，則其電容值C之變化量越大。因 此，通過檢測該觸控面板100中之電容值C之變化量最大 之交疊電容16，便可獲取該觸控動作所指向之觸控位置 之平面座標，即X座標及Υ座標。另一方面，通過檢測該 觸控位置對應之交疊電容之具體電容值C，便可計算出該 電介質層13在該觸控位置之厚度減小量，即計算出該觸 控動作所指向之觸控位置之Ζ座標。 [0023] 由此可見，本發明之觸控面板100通過在該第一電極層12 及第二電極層14之間設置介電常數隨厚度之變化而相對 098146002 表單編號Α0101 第8頁/共22頁 0982078466-0 201122646 [0024] Ο ο [0025] 098146002 應也發生改變之電介質層13 ’比如高分子分散液晶薄膜 現三維觸控 ，從而滿足使用者在三維顯示技術 之觸控操作需要。 °月參閱圖8，其為本發明觸控顯示裝置一種實施例之電路 、’0構不意圖。該觸控顯示裝置10可包括以上實施例該之 觸控面板1〇〇及用於對該觸控面板i 〇〇進行三維座標檢測 之週邊電路。其中，該觸控面板100之結構可參閱以上實 施例之具體描述，此處不再贅述。該週邊電路可包括驅 動電路21、檢測電路22及控制電路23 »其中，該驅動電 路21連接到該觸趁面板10 0之第 一電極線121，用於依序 輸出掃描訊號至該第一電極線121。該檢測電路22連接到 該觸控面板之第二電極線141，用於檢測該第二電極線 141之輪出訊號，並根據該輸出訊號計算出使用者施加之 觸控動作所指向之觸控位置之三維座標。該控制電路23 刀別連接至該驅動電路21及檢測電路22 ,其一方面用於 控制該_電路21之掃描時序，另一方面還用於根據該 檢測電路22提供之三維座標資訊，生成對應之控制訊號 0 … 另外，在具體實施例中，該觸控顯示裝 置1 0還可以進一 步包括-顯示面板’其可連接至該控制電路23。該顯示 面板可以為液晶面板或者其他平面顯示面板，其可接收 該控制電路23根據提供之控制訊號，並根據該控制訊號 顯示對應之畫面。 田》亥觸控顯示裝置10進行工作時，該控制電路23生成時 序汛號並分別提供給該驅動電路2〗及檢測電路22 ◊該驅 表單編衆歷i 第9頁/共22頁 0982078466-0 [0026] 201122646 動電路21根據該時序訊號，產生掃描訊號並分別提供給 違第一電極線121。在該觸控面板1GG沒有被施加觸控動 作時，其内部每個交疊電容16分別具有-初始電容值。 在。亥掃峨作用下，該交4電容16將通過其對應之第 —電極線141向該檢測電路22輸出—感應訊號，此如，-電壓訊號。 [0027] 用者向該觸控面板⑽施加—觸控動作時受該觸控 指。所提供之外力之作用，該電介質層13在觸控動作所工 :向之位置（即觸控位置）處將發生凹陷，使得該電介質 ^在°玄觸控位置之厚度減小、介電常數ε增大’從而 ，=觸控位置對應之交疊電容16之電容值增大。由此 名乂叠電容16通過該第二電極線.141向該 =，應喊將發生改變，践感應贿之改變量對應輸 大4疊電容16受該觸控動作影響而發生之電容值之增 ^。該檢測電路22根據該複數第：電_4ι輸出錢 並結合該控制電路23提供之時序訊號，可獲取各 點輪出之感應訊號之改變量，並根據該感應 。進改變量計算出其對應之交4電容16之電容值改變量 進一步地，該檢測電路22可從上述計算結果中 改變督县4_ 电分m μ 大之觸控感測點，並對其進行位址解析，從而 =到该觸控位置對應之X座標及Υ座標H由於該電 2層13之介電常數ε是受其厚度d影響之，通過查找預 並^之電介質層之介電常數e及厚度d之對應關係表， ^ δ A《C== ε s/4 π kd，便可計算出該電介質層13在 $觸控位置處之厚度改Μ ’從而得到該觸控位置度應 098146002 表單編號Α0101 第10真/共22頁 0982078466-0 201122646 之Z座標。 [0028] [0029] ❹ [0030] [0031] Q [0032] [0033] [0034] [0035] 該檢測電路22可將其檢測到之三維座標（χ，γ，z)提供 給該控制電路23。該控制電路23可進一步根據該三維座 標（X，Y，Z)獲知使用者施加之觸控動作之具體内容， 並據此輸出對應之控制訊號以控制顯示面板顯示對應之 晝面。 综上所述’本發明確已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之較佳實施方 式，本發明之範圍並不以上述實施例為限，該舉凡熟杰 本案技藝之人i援依本發明之精神所作之等效修飾或變 化，皆應涵蓋於以下申請專利範園内。 【圖式簡單說明】 圖1為本發明觸控面板一種實施例之結構分解示意圖。 圖2-4為圖1所示觸控面板之第一電極層及第二電極層之 平面結構示意圖。 圖5為圖1所示之觸杈面板之電介質層之結構示竟圖。 圖6為圖1所示觸控面板被施加觸控動作時側面結構示音、 圖。 圖7為圖1所示之觸控面板被施加觸控動作時電介質層之 液晶微滴之變化過程示意圖。 圖8為本發明觸控顯示裝置一種實施例之電路結構示音圖 〇 【主要元件符號說明】 098146002 表單編號A0101 第11頁/共22頁 0982078466-0 201122646 [0036] 觸控面板 100 [0037] 第一基板 11 [0038] 第一電極層 12 [0039] 電介質層 13 [0040] 第二電極層 14 [0041] 第二基板 15 [0042] 交叠電容 16 [0043] 第一電極線 121 [0044] 液晶微滴 131 [0045] 第二電極線 141 [0046] 驅動電路 21 [0047] 檢測電路 22 [0048] 控制電路 23 098146002 表單編號A0101 第12頁/共22頁 0982078466-0Nematic, TN ) Liquid crystal with form number A0101 Page 6 of 22 0982078466-0 201122646 [0017] 00 [0018] [0019] 材质 Material of vertical alignment function. Specifically, the polymer dispersed film can be obtained by: firstly, mixing a polymer prepolymer with a nematic liquid crystal material; and then polymerizing the polymer and the liquid crystal mixture during the polymerization. The polymer is separated from the liquid crystal material; and after the polymerization process is completed, the liquid crystal material is dispersed in the polymer material by droplets. The liquid crystal droplets 131 can be made into a spherical shape by controlling the process parameters of the above polymerization process, and the size of the liquid crystal droplets 131 is on the order of micrometers. In the polymer dispersed liquid crystal film, each of the liquid crystal droplets 131 includes a plurality of liquid crystal molecules. Since the polymer material has a vertical alignment function for the liquid crystal material, the liquid crystal molecules will be arranged in a central radiation in each of the circular 'spherical liquid crystal droplets 131. When the dielectric layer 13 is subjected to an external force (for example, a user applies a touch action to the touch panel 100), as shown in FIG. 6, the thickness of the dielectric layer 13 at the position pointed by the external force is affected by the external force. It will become smaller, forcing the liquid crystal droplets 131 at the position to be deformed (see Fig. 7), and the degree of deformation is determined by the magnitude of the external force. Thereby, the liquid crystal droplets 131 are changed from a spherical shape to an ellipsoidal shape, and since the polymer material has a vertical alignment function to the liquid crystal material, when the liquid crystal droplets 131 are changed from a spherical shape to an ellipsoidal shape, The arrangement of the liquid crystal molecules inside thereof will shift from the central radiation arrangement to the vertical parallel arrangement. Further, since the liquid crystal molecules have the property of dielectric anisotropy, when the arrangement of the liquid crystal molecules in the liquid crystal droplets 131 is changed, the dielectric constant ε of the dielectric layer 13 also changes. 098146002 Form No. 1010101 Page 7 / Total 22 Page 0992078466-0 201122646 [0020] Specifically, when the dielectric layer 13 is subjected to an external force, the liquid crystal droplets 131 directed to the position of the external force will be spherical to ellipsoidal The transition will result in an increase in the dielectric constant of the dielectric layer 13 in the vertical direction at the location, i.e., the dielectric constant ε at the location increases. Further, the amount of increase in the dielectric constant ε is related to the degree of deformation of the liquid crystal droplet 131, i.e., the amount of increase in the dielectric constant ε is determined by the magnitude of the external force. [0021] According to the formula C= ε s / 4 π kd, it can be seen that when the user applies a touch action to the touch panel, the thickness of the dielectric layer 13 at the corresponding touch position becomes small, and the touch is In the case of the overlapping capacitance corresponding to the position, the thickness d of the dielectric sandwiched between the first electrode line 121 and the second electrode line 141 is decreased, and the dielectric constant ε is increased, thereby causing the overlapping capacitance 16 The capacitance value C increases. Moreover, the amount of increase in the capacitance value C corresponds to the amount of thickness reduction of the dielectric layer 13 at the touch position. [0022] Based on the above structure, in the touch panel 100, the first electrode layer 12 and the second electrode layer 14 overlap each other to form a plurality of overlapping capacitors 16, which are closer to the position pointed by the touch action. At the center point, the greater the degree of deformation of the corresponding liquid crystal droplet 131, the greater the amount of change in the capacitance value C. Therefore, by detecting the overlapping capacitance 16 with the largest change in the capacitance value C in the touch panel 100, the plane coordinates of the touch position pointed by the touch action, that is, the X coordinate and the Υ coordinate can be obtained. On the other hand, by detecting the specific capacitance value C of the overlapping capacitance corresponding to the touch position, the thickness reduction of the dielectric layer 13 at the touch position can be calculated, that is, the touch action is calculated. The coordinates of the touch position. [0023] It can be seen that the touch panel 100 of the present invention has a dielectric constant as a function of thickness between the first electrode layer 12 and the second electrode layer 14 and is opposite to 098146002. Form number Α0101 Page 8 of 22 。 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Referring to Fig. 8, a circuit of the touch display device of the present invention is not intended. The touch display device 10 can include the touch panel 1A of the above embodiment and a peripheral circuit for performing three-dimensional coordinate detection on the touch panel. For the structure of the touch panel 100, refer to the detailed description of the above embodiments, and details are not described herein again. The peripheral circuit may include a driving circuit 21, a detecting circuit 22, and a control circuit 23. The driving circuit 21 is connected to the first electrode line 121 of the touch panel 10 for sequentially outputting a scanning signal to the first electrode. Line 121. The detecting circuit 22 is connected to the second electrode line 141 of the touch panel for detecting the rounding signal of the second electrode line 141, and calculating the touch pointed by the touch action applied by the user according to the output signal. The three-dimensional coordinates of the location. The control circuit 23 is connected to the driving circuit 21 and the detecting circuit 22, and is used to control the scanning timing of the _ circuit 21 on the one hand, and to generate a corresponding correspondence according to the three-dimensional coordinate information provided by the detecting circuit 22 on the other hand. The control signal 0 ... In addition, in a specific embodiment, the touch display device 10 may further include a display panel 'which is connectable to the control circuit 23 . The display panel can be a liquid crystal panel or other flat display panel, and can receive the control signal according to the control signal provided by the control circuit 23, and display the corresponding picture according to the control signal. When the field touch display device 10 is in operation, the control circuit 23 generates a timing nickname and provides it to the drive circuit 2 and the detection circuit 22 respectively. The drive form is edited by the i-page 9/22 pages 0992078466- 0 [0026] 201122646 The dynamic circuit 21 generates scan signals according to the timing signal and supplies them to the first electrode line 121 respectively. When the touch panel 1GG is not touch-applied, each of the internal overlapping capacitors 16 has an initial capacitance value. in. Under the action of the broom, the junction 4 capacitor 16 will output an inductive signal to the detection circuit 22 through its corresponding first electrode line 141, such as a voltage signal. [0027] When the user applies a touch action to the touch panel (10), the touch finger is received. The external layer is provided by the dielectric layer 13 to be recessed at a position (ie, a touch position), so that the thickness of the dielectric layer is reduced and the dielectric constant is reduced. ε increases, and thus, the capacitance value of the overlap capacitor 16 corresponding to the touch position increases. Thus, the name stacking capacitor 16 passes the second electrode line .141 to the =, and the shouting will change. The amount of change in the sensory bribe corresponds to the capacitance value of the large stack of capacitors 16 affected by the touch action. Increase ^. The detecting circuit 22 outputs the money according to the complex number: electric_4ι, and combines the timing signals provided by the control circuit 23 to obtain the amount of change of the sensing signal that is rotated at each point, and according to the sensing. The amount of change in the capacitance value of the corresponding intersection 4 capacitor 16 is calculated by the amount of change. Further, the detection circuit 22 can change the touch sensing point of the 4th electric quantity m μ from the above calculation result and perform the same. The address is resolved, so that the X coordinate and the Υ coordinate H corresponding to the touch position are affected by the thickness d of the dielectric layer 2 due to the thickness d of the dielectric layer, and the dielectric constant of the dielectric layer is preliminarily found. For the correspondence table between e and thickness d, ^ δ A "C== ε s/4 π kd, the thickness of the dielectric layer 13 at the touch position can be calculated to obtain the touch position degree. 098146002 Form number Α 0101 10th true / total 22 pages 0982078466-0 201122646 Z coordinate. [0029] [0035] [0035] [0035] The detection circuit 22 can provide the detected three-dimensional coordinates (χ, γ, z) to the control circuit twenty three. The control circuit 23 can further know the specific content of the touch action applied by the user according to the three-dimensional coordinates (X, Y, Z), and output corresponding control signals accordingly to control the display panel to display the corresponding face. In summary, the present invention has indeed met the requirements of the invention patent and has filed a patent application in accordance with the law. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and the person skilled in the art of the present invention is equivalent to the equivalent modification of the spirit of the present invention. Changes should be covered in the following patent application parks. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic exploded view of an embodiment of a touch panel of the present invention. 2-4 are schematic diagrams showing the planar structure of the first electrode layer and the second electrode layer of the touch panel shown in FIG. FIG. 5 is a structural view showing the structure of the dielectric layer of the touch panel shown in FIG. 1. FIG. FIG. 6 is a schematic diagram showing the side structure of the touch panel shown in FIG. 1 when a touch operation is applied. FIG. FIG. 7 is a schematic diagram showing a process of changing liquid crystal droplets of a dielectric layer when the touch panel shown in FIG. 1 is touched. 8 is a schematic diagram of a circuit structure of a touch display device according to an embodiment of the present invention. [Main component symbol description] 098146002 Form No. A0101 Page 11 / Total 22 page 0982078466-0 201122646 [0036] Touch panel 100 [0037] First substrate 11 [0038] First electrode layer 12 [0040] Dielectric layer 13 [0041] Second substrate 15 [0042] Overlap capacitor 16 [0043] First electrode line 121 [0044] Liquid Crystal Droplet 131 [0045] Second Electrode Line 141 [0046] Drive Circuit 21 [0048] Detection Circuit 22 [0048] Control Circuit 23 098146002 Form Number A0101 Page 12 of 22 0982078466-0