M394475 五、新型說明： 【新型所屬之技術領域】 本創作係關於-種具有重疊顯示之電泳顯示按鍵 結&電泳顯示薄膜與控制树之電泳顯示按鍵結構。…匕指-種 【先前技術】 隨著科技的進步與發展，錢乡t子織 置，以方便使用者輸入各種資料，例如簡訊或指令%^輪入裝 功能，例如_1標。特別是行動式電子產品，例如行=== 個人數位助理。鍵盤是—種常見於行動式電子產品中疋 並由複數健鍵結構顺成。每—個按鍵結構代表單-或是2預 定的字元，例如文字或是躲，心便個者選擇與輸1。 為了提高產品可攜帶性，廠商莫不致力於縮小產品尺寸，使產口 更為輕巧。然而，受限於人類肉眼的辨識力，按鍵上字體僅能縮小 至一極限。—旦字體縮小超過極限時，大部分人肉眼辨識字體的能. 力會變差，若依此字體規格直雜成按鍵，錄可能發生使用者看 不清楚按鍵字體或者繩_等岐。纽，纽於字射辨識度， 手持式電子產品之體積縮小幅度有限。 因此’為了避免輸入的文字、數字或特殊符號太小而無法辨識， 已有美國專利公開號第20〇9〇2678〇8號將按鍵的字元放大，使按鍵 A斤‘射之圖案係為①整子兀的—部分，且賴示賴案所具有的 2特徵係足以供使用者用_即可辨識出所欲表示之字元。請參 ^弟1圖’第1圖為習知按鍵結構之圖案示意圖。如第1圖所示， 習知按鍵結構H)係具有細目按舰12，且各按賴12内且有一 圖案Μ。並且’各按鍵區12之圖案14僅為—完整字摘一部份。 雖然習知麟可增加按_字元可觸度，但於單—按鍵上 顯Γ一個字元。因此’為了讓行動式電子產品得以擴充輸入功能， 使單按鍵呈現&乡個字％，並且使按鍵上所呈制字元得以被使 用者辨識出，實為業界致力研究之目標。 【新型内容】 本創作之目的之一在於提供一種具有重疊顯示之電泳顯示按鍵 結構，以解決上述之問題。 社為達上述之目的’本創作提供—種具有重疊顯示之電泳顯示按鍵 結構’具有複數個按鍵區。電泳顯示按鍵結構包括—第—印刷電路 板、一電泳顯示薄膜、—透明電極層以及—控制元件。第—印刷電 路板包括複數個電極_，分別設於各按鍵區中。各電極圖案包括 一 ^-字元以及-第二字元，且第二社具有—第—重疊部分與第 了1兀重$ ’使第―字元與部分第二字元彼此相連接。電泳顯示薄 膜。又於第e卩刷電路板上，且透明電極層設於電泳顯示薄膜上。控 制元件設於按鍵區中，用以產生輸人訊號。 、工 M394475 元連 1 創作藉由將各按鍵區#之電極圖案的第—字元與部分第二字 連接，使所顯示出之第一字元與第 一子 鍵區内所右* 予70心重4，進而縮小按 内所有子摘佔據的面積，藉此可放大所有顯示出之字元。 【實施方式】 請=第2 _第3圖，第2 _本_具有重4顯示之電泳顯 鍵4之上視示意圖，第3圖為本創作第—實施例之具有重叠 2之電泳顯示按鍵結構沿著第2圖之切線从，的剖面示意圖。如 第2圖所示，電泳顯示按鍵結構觸具有複數個按鍵區脱，且每 一個按鍵區1〇2係對應於所欲輪入訊息之字元。如第3圖所示，電 賴示按鍵結構⑽包括-㈣元件刚、—第—印織路板廳、 一電冰顯示(electrophoretic display，EPD)薄膜繼以及一透明電極 層no。於本實施例中，控制元件104包括一第二印刷電路板12〇、 複數個金屬彈片114、及一彈片薄臈116。第二印刷電路板12〇可為 可撓式印刷電路板’但糾此為限。各金屬料m設於各按鍵區 102之第一印刷電路板120上，且於按壓時，受按壓的金屬彈片114 與其下方第二印刷祕板12〇之相對應印刷電路產生電性導通，進 而輸入相對應之字元所代表之訊號。彈片薄膜116係覆蓋於金屬彈 片114上，且彈片溥膜116具有黏著功能，可將金屬彈片黏著 於第一印刷電路板12〇上。此外，控制元件ι〇4可選擇性地包括複 數個凸柱(phmger)118，且各凸柱118分別對應於各金屬彈片114， 並3又於弟一印刷電路板1〇6與彈片薄膜116之間。由於各凸柱n8 MJ94475 之面積小於各金屬彈片114之面積，並且壓力係與面積成反比，因 此當使用者按㈣泳顯示按鍵結構湖時，凸柱m可減輕使用者 所施以電泳顯示按鍵結構则之力道，而使金屬彈片114產生形變 與第二印刷電路板12G接觸。並且，藉由彈片薄膜以，凸柱⑽ 可固著於彈片薄膜116上，但本創作不限於此，凸柱爪亦可設於 金屬彈片m與彈片薄膜116之間。本實施例之凸柱ιΐ8係由石夕膠 (silicone)或橡膠(rubber)所形成。 _本實施例之第一印刷電路板舰設於控制元件顺上，且電泳顯 不按鍵結構100可另包括一黏膠帶122，將第一印刷電路板鄕與 八下方的彈片薄膜116結合。第一印刷電路板舰包括複數個電極 圖案124 ’分別設於各按鍵區1〇2 a。並且，電泳顯示薄膜應設 ;第I7刷電路板106上，且透明電極層m設於電泳顯示薄膜刚 上使第印刷電路板106、電泳顯示薄膜與透明電極層⑽ 構成一模組，以執行顯示功能。第—印刷電路板祕可為可撓式印 ^電路板，且電性連接至—峨控制器，肋提供電壓訊號至第一 印刷電路板。透明電極層㈣電性連接至—共同電位，例如 =:並二，電泳顯示薄膜108可為任何型式之電泳顯示結構，於 本實=例中，電泳顯示薄膜應係包括複數個微勝囊職以及複數 個液體層1_，骑㈣_b設叫_⑽ =粒::複數個白色粒子。但不限於此，電泳顯示薄= 亦可包括讀個翻杯結構、複數麵體層以及— 層將各液體層密封於各微凹杯結構中。 也釕 M394475 為了清楚說明各電極圖案之設計，以下將以單一電極圖案來做說 明。請參考第4圖’第4圖為本創作單一電極圖案之上視示意圖。 如第4圖所示，各電極圖案124包括一第一字元126以及一第二字 元128，且第二字元丨28具有一第一重疊部分128a與第一字元126 重疊’使第一字元126與第二字元128彼此相連接。亦即，各電極 圖案124係由部分重疊第一字元126與第二字元128所構成，且第 一重i分128a係為弟一字元126與第二字元128之重疊部分。第 一字元126與第二字元128可分別為一字母、一數字、一注音、一 標點符號、一文字或一特殊符號，例如：本實施例之數字2與英文 字母大寫A，但不限於此，以利使用者於操作時辨識各按鍵區1〇2 之功能。 請繼續參考第3圖與第4圖。當電壓訊號被提供至第一印刷電路 板104時，第一印刷電路板1〇4之電極圖案124與透明電極層u〇 之間係形成一垂直電場，作用於電泳顯示薄膜1〇8上。電泳顯示薄 膜108内之液體層i〇8b會受到電場作用，使其中之黑色粒子朝上， 進而顯示出與電極圖案124相同之圖案。藉由將電極圖案124製作 成第一字元126與第二字元128之重疊，可使電泳顯示薄膜1〇8顯 示出之圖案亦呈現出第一字元126與第二字元128重疊。並且，藉 由重疊第一字元126與第二字元128，可縮減第一字元126與第二" 字元128佔據按鍵區1〇2之面積。相對來說，位於按鍵區脱内之 第一字το 126與第二字元128之大小可被放大，目此可有效增加第 M394475 字兀126與第一子s 128的辨識度。此外，第一字元126之顯示 方向係與第二字元128之顯示方向互相平行。但不限於此，請參考 第頂’第5圖為本創作單—電極圖案之另—實施態樣。如第$圖 所示，第-字元126之顯示方向亦可與第二字元128之顯示方向互 相垂直。 、 此外，本創作之各電極_並不限僅具有兩辨元，亦可包括三 ••個=元或以上數量之字元。請參考第6圖，第G圖為本創作之本創 作單電極圖案之X實她態樣。如第6圖示，相較於上述實施態 樣，各電極圖案m另包括-第三字元130，且第三字元13〇具有 第-重疊部分13Ga與第二字元128重疊，使第三字幻3Q與第二 字元m彼此相連接，亦即第三字元13〇與第二字元128部分重叠， 且第二重疊部分u〇a係為第三字元130與第二字元⑶之重疊部 分。並且’第二重疊部分13〇a未與第一重疊部分ma重疊。但不 限於此，第三字元與第二字元重疊之部分亦可與第一字元以及第二 鲁字元重疊之部分重疊’亦即第二重疊部分請&亦可與第—重疊部分 -重疊。請參考第7圖’第7圖為本創作之本創作單-電極圖案 之又-實施態樣。如第7圖示，第三字元13〇之第二重叠部分】施 之一部分可位於第二字元之第一重疊部分128a中，使第三字元13〇 與第二字兀128以及第-字元126彼此相連接。此外，本創作不限 各電極圖案皆具有三個字元以上，亦可根據所欲提供之功能使各電 極圖案包括不同數量之字元。 9 M394475 另外’請繼續參考第3圖，本創作之電泳顯示按鍵結構1〇〇另包 括一導光板140、一黏著層142、一光源144、一鍵帽結構112以及 一不透光框架146。導光板140設於透明電極層11〇上，且導光板 140可為例如矽膠(silicone)膜、碳酸醋(polycarb〇nate，pc)膜、熱塑 性聚細®日弹性體(thermoplastic polyurethane elastomer，TPU)膜咬聚 對苯二曱酸乙二酯(?〇13和吻匕116 16哪]11：1^以6)，？£1')膜，並可具有 複數個奈米級光學佈點，例如5微米至1〇微米的光學微結構。黏著 層142設於導光板140與透明電極層110之間，以接合導光板14〇 與透明電極層110，且可為光學黏著劑或黏膠帶，但不以此為限。 光源144係設於導光板M〇之一侧邊，且可為例如發光二極體 (light-emittingdiode ’ LED)等發光裝置。藉由設置導光板14〇與光 源144，使電泳顯示按鍵結構100於光線不足的場合下仍可辨識所 顯示之字元與圖案，以方便使用者操作。鍵帽結構112餅導紐 M0上，且鍵帽結構m具有-底材112a與複數個設於底材心 上之鍵帽112b’而各_ 112b係分別相對應於各按鍵區搬。鍵帽 結構m係由鈔咖化樹脂所形成，但不限於此，且各鍵帽服 具有按鍵外形，賴制者按壓，並提供使財在使科得以區分 出不同按鍵區κ)2。不透光框架146係設於底材上且 數個開口，露出此等按鍵，以遮蔽此等鍵帽咖間的底材心， 因此可具有錢錄佩果。錢光购146 或-塑膠框架。 不限於上述實施 此外，本創作之電㈣示按鍵結構之控制元件並M394475 V. New description: [New technical field] This creation is about the electrophoretic display button structure with overlapping display and the electrophoretic display button and control tree. ...匕指-种 [Prior Art] With the advancement and development of technology, Qianxiang is woven to facilitate users to input various materials, such as newsletters or instructions%^ wheel loading functions, such as _1 mark. Especially mobile electronic products, such as line === personal digital assistant. The keyboard is a type that is commonly found in mobile electronic products and is composed of a complex key structure. Each button structure represents a single- or 2-predetermined character, such as text or hiding, and the individual chooses and loses one. In order to improve product portability, manufacturers are not committed to reducing the size of the product, making the product port more lightweight. However, limited by the human eye's discernment, the font on the button can only be reduced to a limit. Once the font is reduced beyond the limit, most people can recognize the font's ability. The force will be worse. If the font size is directly mixed into the button, the user may not be able to see the button font or the string. New Zealand, New Zealand, word recognition, hand-held electronic products have limited volume reduction. Therefore, in order to avoid the input text, numbers or special symbols being too small to be recognized, the U.S. Patent Publication No. 20〇9〇2678〇8 has enlarged the characters of the buttons, so that the button A’s pattern is 1 The whole part of the sub-section, and the 2 features of the Lai Lai case are sufficient for the user to identify the character to be represented. Please refer to Figure 1 of the brother's figure. Figure 1 is a schematic diagram of the structure of the conventional button structure. As shown in Fig. 1, the conventional button structure H) has a fine-grained ship 12, and each has a pattern Μ in the lining 12. And the pattern 14 of each button area 12 is only a part of the complete word. Although Xi Zhilin can increase the tangibility of the _ character, it displays one character on the single-key. Therefore, in order to allow mobile electronic products to expand the input function, the single button can be used to display the word %, and the characters on the button can be recognized by the user, which is the goal of the industry. [New Content] One of the purposes of this creation is to provide an electrophoretic display button structure with overlapping display to solve the above problems. For the above purposes, the Society provides an electrophoretic display button structure with overlapping displays having a plurality of button areas. The electrophoretic display button structure includes a -first printed circuit board, an electrophoretic display film, a transparent electrode layer, and a control element. The first printed circuit board includes a plurality of electrodes _, which are respectively disposed in each of the key areas. Each of the electrode patterns includes a ^-character and a second character, and the second body has a ---overlap portion and a first-segment weight $' to connect the first-character and a portion of the second-character to each other. Electrophoresis shows a thin film. Further, on the e-th brush circuit board, the transparent electrode layer is disposed on the electrophoretic display film. The control component is disposed in the button area for generating an input signal. , M394475 Yuanlian 1 creation by connecting the first character of the electrode pattern of each button area # with a part of the second word, so that the displayed first character and the right in the first sub-key area are *70 The heart weight is 4, which in turn reduces the area occupied by all the sub-picks within, thereby magnifying all the displayed characters. [Embodiment] Please = 2nd - 3rd, 2nd_本_ has a top view of the electrophoretic display key 4 with a weight of 4, and FIG. 3 is an electrophoretic display button with an overlap of 2 of the present invention. A schematic cross-sectional view of the structure taken along the tangent to Fig. 2. As shown in Fig. 2, the electrophoretic display button structure has a plurality of button areas, and each button area 1〇2 corresponds to the character of the desired message. As shown in Fig. 3, the display button structure (10) includes - (4) element just, - first printing board hall, an electrophoretic display (EPD) film followed by a transparent electrode layer no. In this embodiment, the control component 104 includes a second printed circuit board 12 , a plurality of metal domes 114 , and a shrapnel 116 . The second printed circuit board 12A can be a flexible printed circuit board' but is limited to this. Each of the metal materials m is disposed on the first printed circuit board 120 of each of the button areas 102, and when pressed, the pressed metal dome 114 is electrically connected to the corresponding printed circuit of the second printed board 12 , below, and further Enter the signal represented by the corresponding character. The elastic film 116 is covered on the metal elastic piece 114, and the elastic film 116 has an adhesive function for adhering the metal elastic to the first printed circuit board 12. In addition, the control element ι4 may optionally include a plurality of rams 118, and each of the protrusions 118 corresponds to each of the metal domes 114, and 3 to the printed circuit board 1〇6 and the shrapnel film 116. between. Since the area of each of the protrusions n8 MJ94475 is smaller than the area of each of the metal domes 114, and the pressure system is inversely proportional to the area, when the user displays the button structure lake according to the (four) stroke, the protrusion m can reduce the electrophoretic display button applied by the user. The structure is then strong, and the metal dome 114 is deformed into contact with the second printed circuit board 12G. Moreover, the protrusion (10) can be fixed to the elastic film 116 by the elastic film, but the present invention is not limited thereto, and the protruding claw can also be disposed between the metal elastic piece m and the elastic film 116. The stud ΐ8 of this embodiment is formed of a silicone or a rubber. The first printed circuit board of the present embodiment is disposed on the control element, and the electrophoretic display key structure 100 may further include an adhesive tape 122 for bonding the first printed circuit board 鄕 to the elastic film 116 below the eight. The first printed circuit board ship includes a plurality of electrode patterns 124' respectively disposed in each of the key areas 1〇2a. Further, the electrophoretic display film should be disposed on the first seventh brush circuit board 106, and the transparent electrode layer m is disposed on the electrophoretic display film so that the first printed circuit board 106, the electrophoretic display film and the transparent electrode layer (10) form a module to perform Display function. The first printed circuit board can be a flexible printed circuit board and electrically connected to the 峨 controller, and the ribs provide a voltage signal to the first printed circuit board. The transparent electrode layer (4) is electrically connected to the common potential, for example, =: and 2. The electrophoretic display film 108 can be any type of electrophoretic display structure. In the present example, the electrophoretic display film should include a plurality of micro-sports. And a plurality of liquid layers 1_, riding (four) _b set _ (10) = grain:: a plurality of white particles. However, it is not limited thereto, and the electrophoretic display thinness may also include reading a flip cup structure, a plurality of facet layers, and a layer sealing each liquid layer in each of the micro concave cup structures. Also 钌 M394475 In order to clearly explain the design of each electrode pattern, the following description will be made with a single electrode pattern. Please refer to Fig. 4'. Fig. 4 is a schematic top view of a single electrode pattern. As shown in FIG. 4, each electrode pattern 124 includes a first character 126 and a second character 128, and the second character 丨 28 has a first overlapping portion 128a overlapping the first character 126. One character 126 and second character 128 are connected to each other. That is, each of the electrode patterns 124 is formed by partially overlapping the first character 126 and the second character 128, and the first weight i of 128a is an overlapping portion of the first character 126 and the second character 128. The first character 126 and the second character 128 may be a letter, a number, a phonetic, a punctuation, a character or a special symbol, for example, the number 2 of the embodiment and the English letter uppercase A, but are not limited thereto. Therefore, the user can recognize the function of each button area 1〇2 during operation. Please continue to refer to Figures 3 and 4. When the voltage signal is supplied to the first printed circuit board 104, a vertical electric field is formed between the electrode pattern 124 of the first printed circuit board 1〇4 and the transparent electrode layer u〇, and acts on the electrophoretic display film 1〇8. The liquid layer i 〇 8b in the electrophoretic display film 108 is subjected to an electric field such that the black particles therein face upward, thereby exhibiting the same pattern as the electrode pattern 124. By making the electrode pattern 124 overlap the first character 126 and the second character 128, the pattern displayed by the electrophoretic display film 1〇8 also exhibits that the first character 126 overlaps the second character 128. Moreover, by overlapping the first character 126 and the second character 128, the area of the first character 126 and the second " character 128 occupying the key area 1〇2 can be reduced. Relatively speaking, the size of the first word το 126 and the second character 128 located in the button area can be enlarged, thereby effectively increasing the recognition degree of the M394475 word 兀126 and the first child s 128. Further, the display direction of the first character 126 and the display direction of the second character 128 are parallel to each other. However, it is not limited to this, please refer to the top of the 'fifth figure for the creation of a single-electrode pattern. As shown in Fig. $, the display direction of the first character 126 may be perpendicular to the display direction of the second character 128. In addition, each electrode of the present invention _ is not limited to having only two distinguishing elements, and may also include three or more characters or more. Please refer to Figure 6, which is the X-th aspect of the creation of the single-electrode pattern. As shown in the sixth embodiment, each electrode pattern m further includes a third character 130, and the third character 13 〇 has a first overlapping portion 13Ga overlapping with the second character 128, so that The three-character 3Q and the second character m are connected to each other, that is, the third character 13〇 and the second character 128 partially overlap, and the second overlapping portion u〇a is the third character 130 and the second word. The overlap of yuan (3). And the 'second overlapping portion 13a' is not overlapped with the first overlapping portion ma. However, the present invention is not limited thereto, and the portion in which the third character and the second character overlap may overlap with the portion in which the first character and the second character are overlapped, that is, the second overlapping portion may be overlapped with the first Partially - overlapping. Please refer to Fig. 7'. Fig. 7 is a further embodiment of the present invention. As shown in FIG. 7, the second overlapping portion of the third character element 13〇 may be located in the first overlapping portion 128a of the second character, such that the third character 13〇 and the second character 128 and the The characters 126 are connected to each other. In addition, the present invention is not limited to having more than three characters per electrode pattern, and each electrode pattern may include a different number of characters depending on the function to be provided. 9 M394475 In addition, please refer to FIG. 3, the electrophoretic display button structure 1 of the present invention further includes a light guide plate 140, an adhesive layer 142, a light source 144, a keycap structure 112 and an opaque frame 146. The light guide plate 140 is disposed on the transparent electrode layer 11 , and the light guide plate 140 can be, for example, a silicone film, a polycarbacetate (PC) film, or a thermoplastic polyurethane elastomer (TPU). Membrane occlusion of ethylene terephthalate (? 〇 13 and kiss 匕 116 16] 11:1 ^ to 6),? £1') film and may have a plurality of nano-scale optical spots, such as optical microstructures from 5 microns to 1 micron. The adhesive layer 142 is disposed between the light guide plate 140 and the transparent electrode layer 110 to bond the light guide plate 14 and the transparent electrode layer 110, and may be an optical adhesive or an adhesive tape, but is not limited thereto. The light source 144 is disposed on one side of the light guide plate M, and may be a light-emitting device such as a light-emitting diode (LED). By providing the light guide plate 14 and the light source 144, the electrophoretic display button structure 100 can still recognize the displayed characters and patterns in the case of insufficient light to facilitate user operation. The key cap structure 112 has a button guide M0, and the key cap structure m has a substrate 112a and a plurality of key caps 112b' disposed on the core of the substrate, and each of the _112b systems are respectively corresponding to the respective button regions. The keycap structure m is formed of a banknote resin, but is not limited thereto, and each of the keycap garments has a button shape, which is pressed by the controller and provides a means for the division to distinguish the different button zones κ)2. The opaque frame 146 is attached to the substrate and has a plurality of openings to expose the buttons to shield the substrate core between the keycaps, so that the opaque cover can be used. Qian Guang purchased 146 or - plastic frame. Not limited to the above implementation. In addition, the electric (4) of the present invention shows the control elements of the button structure and