五、新型說明： 【新型所屬之技術領域】 本創作係有關於一種薄膜開關’尤指一種可根據阻抗 值，進而判斷按壓力大小的薄膜開關。 【先前技術】 薄膜開關由於體積輕薄，因此近年來被廣泛地應用於 各種電子產品，尤其薄臈開關於按壓時所產生之聲響極 小’尤適用於各種裝置之按鍵或鍵盤。 —傳統的薄膜開關通常具有上下兩層薄膜，且上下兩層 薄膜各具有一或多個導電體，當使用者施力使上下兩層薄 膜相互靠近時，則上下兩層的薄膜的導電體將會互相接觸 進而電性導通。然而，現今的薄膜開關並無法精確的量測 使用者的施力大小，也無法藉由使用者的施力大小進而產 生多種不同的功能與需求。 因此’亟需提出一種新穎的薄膜開關機制，可適時地 量測使用者的施力大小，並進而產生多種不同的對應功能。 【新型内容】 有鑑於此，本創作之主要目的在於解決上述的問題而 提供一種薄膜開關、薄膜開關按鍵以及薄膜開關鍵盤，可 根據導電體之阻抗值所產生不同階段的阻值變化，進而區 分該施力的按壓力大小。 為達上述之目的，本創作之實施例揭露一種薄膜開 關，包含：一第一薄膜，其具有相對之二面，於該第一薄 M426810 f 一面設有一第一導電單元，該第一導電單元係由 有=成；一第二薄膜’係設置於該第一薄膜具 二_之一面，該第二薄膜與該第一薄膜之間具 。:距’該第二薄膜朝向該第一薄膜之一面設有一第二 第:該第一導電單元係由複數第二導電體構成，該 第：導疋ί該第—導電單元之位置係相互對應，且該 :導電早υ第—導電單元之間具有一間距；其中當 1 =第膜之該第—導電體塌陷而與該第二薄膜相 开St 電體可陸續與該等第二導電體接觸而 形成電性導通。 人.j ’本創作之實施例又揭露一種薄膜開關按鍵，包 i板板矣：有相對之二表面；一薄膜開關，設置於該 :二：具有相對之二面，於該第一薄膜之其中一面設有！ 第一導電單元係由一第-導電體構成； -/專膜’ u於該第—薄膜具有該第—導電體之一 面’該第二薄膜與該第一薄膜之間具有-間距，該第二薄 =向該膜之—面設有—第二導電單元，該第二導 二==相互對應，且該第二導電單元與』 關ϋ m性件’係設置於薄膜開 一I之上’且對應該第—導電體，該彈性件具有—按 =帽，係設置於該彈性件之上；其中當施力於該鍵帽時， μ按壓部按壓該第一薄膜而使該第一導 與該第二導電體接觸而形成電性導通。、曰β陸續 此外，本創作之實施例再福命 含:-基板，具有相對之二表=:=關鍵包 基板之該二表面之一面μ η 薄膜開關，設置於該 膜，其具有相對之二面，於;;薄f關包括:-第-薄 數個第-導電單元，每一膜之其中-面設有複 雷辦媒β 導電單S係由一第一導 電體構成’一第二薄膜，係設 導電體之一面，該第二薄膜與該第一薄膜Γ間； 距，該第二薄膜朝向該第一薄膜之而<女…去/、有s1 電單元，每-該等第-導電輩;'面没有複數個第二導 成，該等第H二 由複數第二導電體構 該等第—導電單元之位置係相互 -；距一導電早疋與該等第一導電單元之間具有 岸=第ϊ:性件’係設置於薄膜開關之上，且分別對 彈性件具有- 母個鍵中目分別设置於每一個彈性件之上；其中春 ^力於該複數鍵帽之其中一者時’該按壓部按壓該第一薄 :::該第一導電體塌陷且可陸續與該第二導電體 形成電性導通。 以下在貫施方式中詳細敘述本創作之詳細特徵以及優 點丄其内容足以使任何熟習相關技藝者了解本創作之技術 内谷並據以實施，且根據本說明書所揭露之内容、申請專 利範圍及圖示，任何熟習相關技藝者可輕易地理解本創作 相關之目的及優點。 【實施方式】 纽配合圖式將本創作較佳實施例詳細說明如下。 M426810 圖一顯示根據本創作之一實施例之一薄膜開關1的剖 面圖。薄膜開關1包括：一第一薄膜11與一第二薄膜12 。第一薄膜11其具有相對之二面lla與Hb，且於該第一 薄膜11之其中一面（例如，面llb)設有一第一導電單元m ，該第一導電單元111係由一第一導電體Ula構成。第二 薄膜12係設置於該第一薄膜u具有該第一導電體之 一面，該第二薄膜與該第一薄膜之間具有一間距d，該第 二溥膜朝向該第一薄膜之一面設有一第二導電單元121， 該第二導電單元121係由複數第二導電體(例如第二導電體 121a 121b與121c)構成，該第二導電單元121與該第一 導電單疋111之位置係相互對應，且該第二導電單元 與該第導電單元111之間具有一間距。此外，當使用 者施力使該第一薄膜U之該第一導電體1Ua塌陷而與該 第二薄膜12相對靠近時，該第—導電體1Ua可與該 導電體121a、121b與121(1接觸而形成電性導通。一 圖二顯示圖一之第二薄膜的俯視圖。如圖二所示，中 該第二導電單元121可為—圓形導電單元i2m 咖、Μ。等距設置於該圓形導電單元 形導電單元之周邊之門Π = 211?與121°與該圓 η透之間更设有一電阻&，每一個 計上，第再者，於實際需求與設 彳上弟一導電早7L 121亦不受限為圓形導電單元， 設計為任意的幾何开彡此 . 且叮 Μ詈料楚J 電阻亦可等距或不等距 的1於衫二導電單元121之内。此外，每—個 導電體之距離該圓形導雷置矛由 〇>C 一 ㈣導電早70之中心的長度皆不相同，且 M420810 备使用者施力使該第-導電體111&陸續與該等第二導電體 121a、mb與me導通時，則根據每一第二導電體之阻抗 值’進而區分該施力的按壓力。更進一步而言，當施力使 該第-導電體Illa陸續與該等第二導電體121a、l2ib與 121e導it時’貝》j根據每—個第二導電體之阻抗值所產生不 • 同階段雜值變化，it而區分該施力的按壓力。 _ 顯*圖二t電性導通時的等效電路圖^如圖三所 不’當使用者施力使該第-薄膜u與該第二薄膜12相對 鲁靠近時，該第一導電體1Ua可陸續與該第二導電體⑵a 、121b與121c接觸而形成電性導通，因此，可形成導電 體阻抗RAg串聯複數個電阻Ra，且複數個電阻^以彼此相 並聯。故當電性導通時，則可根據並聯效應出現不同的階 段的非連續阻值變化，進而區分使用者施力的按壓力。 圖四顯示應用本創作之薄膜開關之一薄膜開關按鍵2 的剖面圖。薄膜開關按鍵2包括：一基板2卜一薄膜開關 22、一彈性件23以及一鍵帽24。基板21具有相對之二表 鲁面21a ’ 21b。薄膜開關22，設置於該基板21之該二表面 之一面（例如，面21a)上，且該薄膜開關包括一第一薄膜221 與一第二薄膜222。前述之第一薄膜221其具有相對之二 面221a’ 221b，於該第一薄膜221之其中一面（例如面221b) 设有一第一導電單元2211，該第一導電單元2211係由一第 一導電體2211a構成，而第二薄膜222,係設置於該第一薄 膜221具有該第一導電體2211a之一面，該第二薄膜222 與該第一薄膜221之間具有一間距d，該第二薄膜222朝 向該第一薄膜221之一面設有一第二導電單元2212，該第 7 M426810 二導電單元2212係由複數第二導電體2212a、2212b、2213c 構成，該第二導電單元2212與該第一導電單元2211之位 置係相互對應，且該第二導電單元2212與該第一導電單元 2211之間具有一間距dl ; —彈性件23，係設置於薄膜開 關22之上，且對應該第一導電體2211a ，該彈性件23具 有一按壓部231 ; —鍵帽24，係設置於該彈性件23之上。 另外，當使用者施力於該鍵帽24時，該按壓部231按壓該 第一薄膜221而使該第一導電體2211a塌陷且可陸續與該 第二導電體2212a、2212b、2212c接觸而形成電性導通。 另外，熟悉此技藝之人士應可明暸，本創作之薄膜開關按 鍵亦可包括一支撐結構(未繪示），以活動地銜接鍵帽24與 基板21，例如，剪刀腳結構。 此外，該第二導電單元2212可為一圓形導電單元(如 圖二所示），且該複數第二導電體2212a、2212b與2212c 等距設置於該圓形導電單元内，且每一個第二導電體與該 圓形導電單元之周邊之間更設有一電阻Ra，每一個電阻Ra 之阻值可為相同阻值或不同阻值。再者，於實際需求與設 計上，第二導電單元2212亦不受限為圓形導電單元，且可 設計為任意的幾何形狀，而每一個電阻亦可等距或不等距 的設置於該第二導電單元2212之内。此外，每一個該第二 導電體之距離該圓形導電單元之中心的長度皆不相同，且 當使用者施力使該第一導電體2211a陸續與該等第二導電 體2212a、2212b與2212c導通時，則根據每一第二導電體 之阻抗值，進而區分該施力的按壓力。更進一步而言，當 施力使該第一導電體2211a陸續與該等第二導電體2212a M426810 、2212b與2212c導通時，則根據每一個第二導電體之阻 抗值所產生不同階段的阻值變化，進而區分該施力的按壓 力。 圖五顯示應用本創作之薄膜開關之一薄膜開關鍵盤3 的部分剖面圖。薄膜開關鍵盤4包括：一基板31、一薄膜 開關32、複數彈性件33以及複數鍵帽34。基板31具有相 對之二表面31a、31b。薄膜開關32，設置於該基板31之 該二表面之一面上（例如31a)，且該薄膜開關32包括：一 φ 第一薄膜321與一第二薄膜322。前述第一薄膜321其具 有相對之二面321a，321b，於該第一薄膜321之其中一面 (例如321b)設有複數個第一導電單元3211，每一該等第一 導電單元3211係由一第一導電體3211a構成，而第二薄膜 322,係設置於該第一薄膜321具有該第一導電體3211a之 一面，該第二薄膜322與該第一薄膜321之間具有一間距 d，該第二薄膜322朝向該第一薄膜321之一面設有複數個 第二導電單元3212，每一該等第二導電單元3212係由複 φ 數第二導電體32Ha、321汕、32l2c構成，該等第二導電 單元3212與該等第一導電單元3211之位置係相互對應， 且該等第二導電單元3212與該等第一導電單元3211之間 具有一間距dl。複數彈性件33，係設置於薄膜開關32之 上，且分別對應該等第一導電體，每一個彈性件具有一按 壓部331。複數鍵帽34，每一個鍵帽分別設置於每一個彈 性件之上。另外，當使用者施力於該複數鍵帽之其中一者 時，該按壓部331按壓該第一薄膜321而使該第一導電體 3211a塌陷且可陸續與該第二導電體3212a、3212b、3212c 9 M426810 接觸而形成電性導通。另外，熟悉此技藝之人士應可明瞭 ，本創作之薄膜開關鍵盤之每一個按鍵亦可包括一支撐結 構（未繪示），以活動地銜接鍵帽34與基板31，例如，剪刀 腳結構。 此外，該第二導電單元3212可為一圓形導電單元(如 圖二所示），且該複數第二導電體3212a、3212b、3212c等 距設置於該圓形導電單元内，且每一個第二導電體與該圓 形導電單元之周邊之間更設有一電阻Ra，每一個電阻Ra 之阻值可為相同阻值或不同阻值。再者，於實際需求與設 計上，第二導電單元3212亦不受限為圓形導電單元，且可 設計為任意的幾何形狀，而每一個電阻亦可等距或不等距 的設置於該第二導電單元3212之内。此外，每一個該第二 導電體之距離該圓形導電單元之中心的長度皆不相同，且 當使用者施力使該第一導電體3211a陸續與該等第二導電 體導3212a、3212b、3212c通時，則根據每一第二導電體 之阻抗值，進而區分該施力的按壓力。更進一步而言，當 施力使該第一導電體3211a陸續與該等第二導電體導 3212a、3212b、3212c通時，則根據每一個第二導電體之阻 抗值所產生不同階段的阻值變化，進而區分該施力的按壓 力。 另外，於本創作，上述之導電體材料可為導電金屬， 例如，銀漿，而薄膜開關可由聚乙烯對苯二曱酸酯 (Polyethylene Terephthalate，PET)所製成。 以上所述，乃僅記載本創作為呈現解決問題所採用的 技術手段之較佳實施方式或實施例而已，並非用來限定本 10 =作專利實施之難。即凡與梢料射請翻文義相 依本創作專利範®所做的均等變化與㈣，皆為本 創作專利範圍所涵蓋。 圖式簡單說明] 面圖 圖一顯示根據本創作之—實施例之-薄膜開關1的剖 圖，顯示圖一之第二薄骐的俯視圖。 =三顯示®二之電性導通時的等效電路圖。 的二顯示應用本創作之薄膜開關之一薄膜開關按鍵2 圖五顯示應用本創作之薄 的部分剖面圖。 _開關之-賴開關鍵盤3 【主要元件符號說明】 1薄膜開關 11第一薄膜 Ha > lib 面 12第二薄膜 111第一導電單元 111a 第一導電體 121第二導電單元 121a、121b、121c 第二導電體 1211圓形導電單元 2 薄膜開關按鍵 M426810 21 基板 21a ' 21b 面 22薄膜開關 221 第一薄膜 221a ' 221b 面 222 第二薄膜 23 彈性件 231 按壓部 24 鍵帽 2211 第一導電單元 2211a 第一導電體 2212 第二導電單元 2212a > 2212b ' 2212c 第二導電體 3 薄膜開關鍵盤 31 基板 31a、 31b 面 32 薄膜開關 321 第一薄膜 321a 、321b 面 322 第二薄膜 33 彈性件 331 按壓部 34 鍵帽 3211 第一導電單元 3211a 第一導電體 12 M426810 第二導電體 3212 第二導電單元 3212a、3212b、3212c d、dl 間距 13V. New description: [New technical field] This creation is about a membrane switch, especially a membrane switch that can determine the pressing force according to the impedance value. [Prior Art] Since the membrane switch is light in size, it has been widely used in various electronic products in recent years, and particularly, the thin diaphragm switch produces a small sound when pressed, which is particularly suitable for buttons or keyboards of various devices. - The conventional membrane switch usually has two layers of upper and lower layers, and the upper and lower layers of the film each have one or more electrical conductors. When the user applies the force to bring the upper and lower layers of the film closer to each other, the electrical conductors of the upper and lower layers of the film will Will be in contact with each other and electrically connected. However, today's membrane switches do not accurately measure the amount of force applied by the user, nor can they produce a variety of different functions and needs by the amount of force applied by the user. Therefore, there is a need to propose a novel membrane switching mechanism that can measure the amount of force applied by the user in a timely manner and thereby generate a plurality of different corresponding functions. [New content] In view of this, the main purpose of this creation is to solve the above problems and provide a membrane switch, a membrane switch button and a membrane switch keyboard, which can be distinguished according to the resistance changes at different stages of the impedance value of the electrical conductor. The pressing force of the applied force. In order to achieve the above object, an embodiment of the present invention discloses a membrane switch comprising: a first film having opposite sides, a first conductive unit disposed on one side of the first thin M426810 f, the first conductive unit The second film is disposed on one side of the first film, and the second film is disposed between the second film and the first film. a second second surface of the second film facing the first film: the first conductive unit is composed of a plurality of second conductive bodies, and the position of the first conductive unit corresponds to each other And the conductive early-stage-conducting unit has a spacing between the conductive elements; wherein when 1 = the first conductive body of the first film collapses and is adjacent to the second film, the St electric body can be successively connected to the second electric conductor Electrical contact is made by contact. The embodiment of the present invention further discloses a membrane switch button, which comprises: an opposite surface; a membrane switch disposed on the second side: having opposite sides, the first film One side is set! The first conductive unit is composed of a first conductor; - / the film 'u has a surface of the first conductor - the second film has a - spacing between the second film, the first Two thin = the second conductive unit is provided to the surface of the film, the second conductive two == correspond to each other, and the second conductive unit and the "m-shaped member" are disposed on the film opening I And corresponding to the first electrical conductor, the elastic member has a press-fit cap disposed on the elastic member; wherein when the key cap is applied, the μ pressing portion presses the first film to make the first Leading to contact with the second electrical conductor to form electrical conduction. In addition, the embodiment of the present invention further includes: - a substrate having a surface of the two surfaces of the key substrate: μ = a thin film switch disposed on the film, which has a relative The two sides are:; the thin f-off includes: - the first-thin number of first-conducting units, each of which is provided with a complex-treating medium β-conductive single S-system consisting of a first electrical conductor a second film, which is provided with one surface of the electrical conductor, the second film and the first film ;; the second film faces the first film and the s1 electric unit The first-conducting generation; the surface has no plurality of second leads, and the second plurality of second conductive bodies are formed by the plurality of second conductive bodies, wherein the positions of the first conductive units are mutually--the distance from a conductive early and the first Between the conductive units, there is a shore=the third member: the member is disposed on the membrane switch, and has a pair of elastic members respectively. The mother button is respectively disposed on each of the elastic members; wherein the spring force is applied to the plurality of elastic members; When the one of the key caps is pressed, the pressing portion presses the first thin:: the first electrical conductor collapses and can be successively connected to the second conductive Forming electrically conductive. The detailed features and advantages of the present invention are described in detail below, and the content thereof is sufficient for any skilled artisan to understand the technology of the present invention and to implement it according to the contents disclosed herein, the scope of the patent application and As shown in the figure, anyone skilled in the art can easily understand the purpose and advantages associated with the creation. [Embodiment] The preferred embodiment of the present invention will be described in detail below with reference to the drawings. M426810 Figure 1 shows a cross-sectional view of a membrane switch 1 according to one embodiment of the present invention. The membrane switch 1 includes a first membrane 11 and a second membrane 12. The first film 11 has opposite sides 11a and Hb, and one of the first film 11 (for example, the surface 11b) is provided with a first conductive unit m, and the first conductive unit 111 is made of a first conductive The body Ula is composed. The second film 12 is disposed on the first film u having one surface of the first conductive body, the second film and the first film have a spacing d, and the second film is disposed facing the first film There is a second conductive unit 121, and the second conductive unit 121 is composed of a plurality of second conductive bodies (for example, second conductive bodies 121a 121b and 121c), and the position of the second conductive unit 121 and the first conductive unit 111 is Corresponding to each other, and the second conductive unit and the first conductive unit 111 have a spacing therebetween. In addition, when the user applies a force to collapse the first conductive body 1Ua of the first film U to be relatively close to the second film 12, the first conductive body 1Ua and the conductive bodies 121a, 121b and 121 (1) A second top view of the first film of FIG. 1 is shown in FIG. 2. The second conductive unit 121 can be a circular conductive unit i2m, which is equidistantly disposed. The threshold of the periphery of the circular conductive unit-shaped conductive unit = 211? and 121 ° and the circle η through a resistor &, each meter, the second, in the actual demand and set up a conductive The early 7L 121 is also not limited to a circular conductive unit, and is designed to be of any geometrical opening. Moreover, the resistors may be equidistant or not equidistant within the first conductive unit 121 of the shirt. The distance between each of the conductors is different from the length of the center of the conductor. The length of the center of the conductor 70 is different, and the M420810 is used by the user to apply the force to make the first conductor 111& When the second electrical conductors 121a, mb and me are turned on, according to the impedance value of each second electrical conductor Further, the pressing force of the urging force is further divided. Further, when the urging force causes the first electric conductor 111a to continuously lead to the second electric conductors 121a, 12b, and 121e, the squeezing j is based on each second conductive The impedance value of the body is not generated. • The same stage of the change in the value of the miscellaneous value, it distinguishes the pressing force of the applied force. _ ** * Figure 2 is the equivalent circuit diagram when the electrical conduction is ^ ^ Figure 3 does not 'when the user applies force When the first film u and the second film 12 are relatively close to each other, the first conductor 1Ua can be electrically contacted with the second conductors (2) a, 121b and 121c, thereby forming a conductor impedance RAg. A plurality of resistors Ra are connected in series, and the plurality of resistors are connected in parallel with each other. Therefore, when electrically conducting, the discontinuous resistance changes at different stages may be generated according to the parallel effect, thereby distinguishing the pressing force applied by the user. 4 shows a cross-sectional view of a membrane switch button 2 of one of the membrane switches of the present application. The membrane switch button 2 comprises: a substrate 2, a membrane switch 22, an elastic member 23 and a keycap 24. The substrate 21 has a relative table Lu 21a ' 21b. Film The switch 22 is disposed on one of the two surfaces of the substrate 21 (for example, the surface 21a), and the membrane switch includes a first film 221 and a second film 222. The first film 221 has two opposite sides. The surface 221a' 221b is provided with a first conductive unit 2211 on one side (for example, the surface 221b) of the first film 221, the first conductive unit 2211 is composed of a first conductive body 2211a, and the second film 222 is The first film 221 has a surface of the first film 2211a, the second film 222 has a spacing d between the first film 221, and the second film 222 is disposed facing the first film 221 The second conductive unit 2212, the seventh M426810 second conductive unit 2212 is composed of a plurality of second conductive bodies 2212a, 2212b, 2213c, and the positions of the second conductive unit 2212 and the first conductive unit 2211 correspond to each other, and the first conductive unit 2212 The second conductive unit 2212 has a spacing d1 between the first conductive unit 2212 and the first conductive unit 2211. The elastic member 23 is disposed on the membrane switch 22 and corresponds to the first conductive body 2211a. The elastic member 23 has a pressing portion 231. ; -key 24, lines disposed on the resilient member 23. In addition, when the user applies the keycap 24, the pressing portion 231 presses the first film 221 to collapse the first conductor 2211a and can be formed in contact with the second conductors 2212a, 2212b, and 2212c. Electrically conductive. In addition, it should be apparent to those skilled in the art that the membrane switch button of the present invention can also include a support structure (not shown) for movably engaging the keycap 24 with the substrate 21, such as a scissor foot structure. In addition, the second conductive unit 2212 can be a circular conductive unit (as shown in FIG. 2), and the plurality of second conductive bodies 2212a, 2212b and 2212c are equidistantly disposed in the circular conductive unit, and each of the first A resistor Ra is further disposed between the two conductors and the periphery of the circular conductive unit, and the resistance of each resistor Ra may be the same resistance value or different resistance values. Furthermore, in actual requirements and design, the second conductive unit 2212 is also not limited to a circular conductive unit, and can be designed into any geometric shape, and each resistor can be disposed equidistantly or unequally. Within the second conductive unit 2212. In addition, the length of each of the second conductive bodies is different from the center of the circular conductive unit, and when the user applies force, the first conductive body 2211a is successively connected to the second conductive bodies 2212a, 2212b, and 2212c. When conducting, according to the impedance value of each second conductor, the pressing force of the applied force is further distinguished. Further, when the first conductor 2211a is continuously connected to the second conductors 2212a, M426810, 2212b and 2212c, the resistance values of the different stages are generated according to the impedance values of the second conductors. The change, in turn, distinguishes the pressing force of the applied force. Figure 5 shows a partial cross-sectional view of a membrane switch keyboard 3 using one of the membrane switches of the present invention. The membrane switch keyboard 4 includes a substrate 31, a membrane switch 32, a plurality of elastic members 33, and a plurality of keycaps 34. The substrate 31 has opposite surfaces 31a, 31b. The membrane switch 32 is disposed on one surface of the two surfaces of the substrate 31 (for example, 31a), and the membrane switch 32 includes: a first film 321 and a second film 322. The first film 321 has two opposite sides 321a, 321b. One of the first film 321 (for example, 321b) is provided with a plurality of first conductive units 3211, and each of the first conductive units 3211 is composed of one The first conductive body 3211a is disposed on the first film 321 having one surface of the first conductive body 3211a, and the second film 322 and the first film 321 have a spacing d. The second film 322 is disposed on a surface of the first film 321 with a plurality of second conductive units 3212, and each of the second conductive units 3212 is composed of a plurality of second conductive bodies 32Ha, 321A, and 32l2c. The positions of the second conductive unit 3212 and the first conductive units 3211 correspond to each other, and the second conductive units 3212 and the first conductive units 3211 have a spacing d1. The plurality of elastic members 33 are disposed on the membrane switch 32 and respectively correspond to the first electrical conductors, each of which has a pressing portion 331. A plurality of keycaps 34, each of which is disposed on each of the elastic members. In addition, when the user applies the one of the plurality of keycaps, the pressing portion 331 presses the first film 321 to collapse the first conductive body 3211a and can be successively connected to the second conductive bodies 3212a, 3212b, 3212c 9 M426810 Contact to form electrical conduction. In addition, it should be apparent to those skilled in the art that each of the buttons of the inventive membrane switch keyboard can also include a support structure (not shown) for movably engaging the keycap 34 with the substrate 31, for example, a scissor foot structure. In addition, the second conductive unit 3212 can be a circular conductive unit (as shown in FIG. 2), and the plurality of second conductive members 3212a, 3212b, and 3212c are equidistantly disposed in the circular conductive unit, and each of the first A resistor Ra is further disposed between the two conductors and the periphery of the circular conductive unit, and the resistance of each resistor Ra may be the same resistance value or different resistance values. Moreover, in actual requirements and design, the second conductive unit 3212 is also not limited to a circular conductive unit, and can be designed into any geometric shape, and each resistor can be disposed equidistantly or unequally. Within the second conductive unit 3212. In addition, each of the second electrical conductors has a different length from the center of the circular conductive unit, and when the user applies a force, the first electrical conductor 3211a is successively connected to the second electrical conductors 3212a, 3212b, When the 3212c is turned on, the pressing force of the applied force is further determined according to the impedance value of each of the second electrical conductors. Further, when the first conductor 3211a is continuously connected to the second conductors 3212a, 3212b, and 3212c, the resistance values of the different stages are generated according to the impedance values of the second conductors. The change, in turn, distinguishes the pressing force of the applied force. In addition, in the present invention, the above-mentioned conductor material may be a conductive metal such as silver paste, and the membrane switch may be made of polyethylene terephthalate (PET). The above description only describes the preferred embodiment or embodiment of the technical means used to solve the problem, and is not intended to limit the difficulty of implementing the patent. That is, all the changes and the (4) made by the creation of the patents are related to the scope of the creation of the patent. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a cross-sectional view of a membrane switch 1 according to the present invention, showing a plan view of a second sheet of Fig. 1. = Equivalent circuit diagram for the electrical display of the three display ® two. The second display shows one of the membrane switches of the present application. The membrane switch button 2 Fig. 5 shows a thin partial cross-sectional view of the application. _Switch-Look switch keyboard 3 [Main component symbol description] 1 Membrane switch 11 First film Ha > lib face 12 Second film 111 First conductive unit 111a First conductor 121 Second conductive unit 121a, 121b, 121c Second conductor 1211 circular conductive unit 2 membrane switch button M426810 21 substrate 21a ' 21b surface 22 membrane switch 221 first film 221a ' 221b surface 222 second film 23 elastic member 231 pressing portion 24 key cap 2211 first conductive unit 2211a First conductor 2212 second conductive unit 2212a > 2212b ' 2212c second conductor 3 membrane switch keyboard 31 substrate 31a, 31b surface 32 membrane switch 321 first film 321a, 321b surface 322 second film 33 elastic member 331 pressing portion 34 key cap 3211 first conductive unit 3211a first conductor 12 M426810 second conductor 3212 second conductive unit 3212a, 3212b, 3212c d, dl spacing 13