200816034 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種文字符號輸入裝置，特別是指 一種可利用不同之顯示顏色來顯示文字符號群集之 文字符號輸入裝置。 【先前技術】 在現有之可攜式電子裝置中，特別是行動電話、 個人數位助理（PDA)、語言翻譯機與筆記型電腦等 資料與信號處理電子裝置，通常都會配置文字符號輸 入裝置，以供使用者輸入文字符號來驅使電子裝置執 行特定之指令而實現多元化之功能。然而，由於文字 符號之數量眾多（諸如英文字母有26個，中文之注 音符號有38個，阿拉伯數字亦有10個等），在實務 運用層面上，不太可能浪費太太的空間來為每一個文 字符號配置專屬之輸入單體。緣此，目前所採用之方 法係將常用之文字符號分成不同之文字符號群集，使 其得以分散配置於各個輸入單體。 以下吾人將以行動電話為習知實施例，來結合圖 式對以上所述種種提出更具體之說明。請參閱第一圖 與第二圖，第一圖係顯示習知行動電話之立體外觀示 意圖，第二圖係顯示習知實施例中各文字符號於文字 符號輸入單體上之配置示意圖。一行動電話100包含 一顯示面板1與複數個顯示不同文字符號之文字符號 輸入單體2。 圖式上之其中一個文字符號輸入單體2配置三個 5 200816034 符號顯示區21、22與23，且三個文字符萝配署 Si ikHf 23内分別配置有三個文字符號群隼、11、 洛&有 」、abc」與「勺女门匸」等文字#轳Π 繪製於第一圖’僅於第二圖中呈現)。文子付唬(未 $ —使用者在對行動電話1〇〇輸入指令料 (^寄發簡訊、撥號或輸入通訊資料策資j 通常會有依實際需要而輸入中文^ ^數予。在實務運用上，通常必為藉由適當之切換 f來切換選定每個文字符號輸入單體2該代表上辻一、 ^广由於上述三個文字符號群集上= 巧，別配置於三個文字符號顯示區21、。與^、， 此报容易造成視覺混淆之問題。 ^ Γ時，為了要將三個文字符號群集211、221盥 231内之所有文字符號（即「^、「讣〜盥「勹女^门 配置於文字符號輸入單體2之有限的顯 ί. ϊίϊΐ，。母一文字符號所分配到之顯示面積就會變 為解決上述問題，本發明之主要目的係提供一 文字符號輸入裝置’可利用不同顏色來顯示 文 字符號群集。 【發明内容】 ^觀以上所述，在習知文字符號配置於文字符號 ，入單體時，普遍存有容易造成視覺混淆與每一文^ 符號分配到之顯示面積太小之問題。 緣此，本發明之主要目的係提供一種文字符號輸 6 200816034 入裝置，在該文字符號輸入裝置中，係將文字符號區 分為至少二個文字符號群集，各文字符號群集分別以 不同色光之激發螢光材料或有色光濾、光元件組成，使 在切換選擇不同之有色背光源時，可以不同顏色來顯 示對應之文字符號群集。 本發明為解決習知技術之問題所採用之技術手 段係提供一種文字符號輸入裝置，其包含複數個文字 符號輸入單體、一背光層與一文字符號群集切換單 元。各文字符號輸入單體分別包含一觸碰層與一背光 層，觸碰層設有至少二個文字符號群集，各文字符號 群集係分別對應於不同之顯示顏色，背光層係可選擇 性地提供至少二種有色背光源，各有色背光源係分別 對應於上述之文字符號群集與顯示顏色。文字符號群 集切換單元係在上述之文字符號群集中進行切換，並 依據切換選定之文字符號群集，使背光層提供對應於 該文字符號群集所對應之該顯示顏色之有色背光 源，藉以顯示該切換選定之文字符號群集所對應之顯 示顏色。 在本發明之其中一實施例中，各文字符號群集係 可重疊地配置於文字符號輸入單體之觸碰層，使得文 字符號群集内之文字符號可分配到比在習知實施例 中更大之顯示面積。 由以上所述可知，相較於習知技術，本發明所提 供之文字符號输入裝置，不僅可以不同之顯示顏色切 換顯示對應之文字符號群集，藉以有效解決容易造成 視覺混淆之問題，更能藉由本發明將文字符號群集可 重疊地配置於文字符號輸入單體，來增加各文字符號 之顯示面積。 7 200816034 本發明所採用的具體實施例，將藉由以下之實施 例及圖式作進一步之說明。 【實施方式】 由於發明所提供之文字符號輸入裝置可廣泛運 用於各種具備資料輸入功能之電子裝置，其組合實施 方式更是不勝枚舉，故在此不再一一贅述，僅列舉其 在行動電話運用方面之二較佳實施例加以說明。 請參閱第三圖至七圖。第三圖係顯示本發明第一 實施例運用於行動電話之外觀示意圖，第四圖係顯示 本發明第一實施例局部外觀示意圖，第五圖係顯示本 發明第一實施例中文字符號輸入單體之立體分解示 意圖，第六圖係顯示第五圖A-A剖面之剖面示意圖， 第七圖係顯示本發明第一實施例中之各文字符號群 集與其配置關係示意圖。如圖所示，一行動電話200 包含一顯示面板3與一文字符號輸入裝置300，其 中，文字符號輸入裝置300包含複數個文字符號輸入 單體4與一文字符號群集切換單元5。 各文字符號輸入單體4包含一觸碰層41、一感應 層42與一背光層43。圖式上之其中一個觸碰層41 之展示表面設有一組合文字符號群集G，且組合文字 符號群集G係由三個文字符號群集G卜G2與G3所 組成。其中，文字符號群集Gl、G2與G3分別包含 「勹女门匸」、「abc」與「1」等文字符號（如第七圖 所示），且文字符號群集Gl·、G2與G3係重疊配置於 同一區域。文字符號群集Gl、G2與G3分別對應於 不同之顯示顏色，在本實施例中文字符號群集G1係 對應於紅色之顯示顏色，文字符號群集G2係對應於 8 200816034 藍色之顯示顏色，文字符號群集G3係對應於綠色之 顯示顏色。同時，文字符號群集G1中之文字符號「勹 女门C」塗有紅光激發螢光材料，文字符號群集G2 中之文字符號「abc」塗有藍光激發螢光材料，而文 字符號群集G3中之文字符號「1」則塗有綠光激發螢 光材料。 感應層42係位於觸碰層之下方，並且包含一感 應層本體421、二感應元件422與423以及一中央透 光區域424。感應元件422與423係設置於感應層本 體421上，面向觸碰層41之位置，當觸碰層41被押 按時，用來感應並傳送出代表位於觸碰層41上其中 一文字符號之信號。在本實施例中，中央透光區域424 係由透光材料所組成，然而在實務運用上，亦可直接 鏤空貫穿感應層42而形成上述之中央透光區域424。 背光層43係位於感應層42之下方，並且包含一 背光層本體431與三個有色背光源。在本實施例中， 三個有色背光源係分別對應於紅色、藍色與綠色之顯 示顏色而為一紅色背光源432、一藍色背光源433與 一綠色背光源434。文字符號群集切換單元5係用以 在上述之文字符號群集Gl、G2與G3中進行切換， 如第三圖所示之文字符號群集切換單元5之三個切換 位置，即分別對應於文字符號群集Gl、G2與G3。 請繼續參閱第八圖至第十圖，其係顯示本發明第 一實施例切換顯示文字符號群集之一系列示意圖。其 中，第八圖係顯示本發明第一實施例顯示其中一文字 符號群集之示意圖，第九圖係顯示本發明第一實施例 顯示次一文字符號群集之示意圖，第十圖係顯示本發 明第一實施例顯示另一文字符號群集之示意圖。 9 200816034 如第八圖所示，當文字符號群集切換單元5切換 至第三圖所示之第一個切換位置時，係對應於文字符 號群集G1，此時，會驅動紅色背光源432發出紅色 光線，所發出之紅色光線會穿透或穿過中央透光區域 424而投射到觸碰層41，並激發塗有紅光激發螢光材 料之文字符號群集G1内之文字符號「勹女门匸」，使 文字符號群集G1内之文字符號「勹女门C」得以紅 色之顯示顏色而加以顯示。由於紅色背光源432所發 出的紅色光線並不會激發藍光激發螢光材料與綠光 激發螢光材料，因此，並不會顯示文字符號群集G2 和G3内之文字符號「abc」與「1」。 同樣地，如第九圖所示，當文字符號群集切換單 元5切換至第三圖所示之第二個切換位置時，係對應 於文字符號群集G2，此時，會驅動藍色背光源433 發出藍色光線，所發出之藍色光線會穿透或穿過中央 透光區域424而投射到觸碰層41，並激發塗佈有藍光 激發螢光材料之文字符號群集G2内之文字符號 「abc」，使文字符號群集G2内之文字符號「abc」得 以藍色之顯示顏色而加以顯示。 當文字符號群集切換單元5切換至第三圖所示之 第二個切換位置時，係對應於文字符號群集G2，此 時會驅動藍色背光源433發出藍色光線，所發出之藍 色光線會穿透或穿過中央透光區域424而投射到觸碰 層41，並激發塗有藍光激發螢光材料之文字符號群集 G2内之文字符號「abc」，使文字符號群集G2内之文 字符號「abc」得以藍色之顯示顏色而加以顯示。 如第十圖所示，當文字符號群集切換單元5切換 至第三圖所示之第三個切換位置時，係對應於文字符 號群集G3，此時會驅動綠色背光源434發出綠色光 10 200816034 線，所發出之綠色光線會穿透或穿過中央透光區域 424而投射到觸碰層41，並激發塗有綠光激發螢光材 料之文字符號群集G3内之文字符號「1」，使文字符 號群集G3内之文字符號「1」得以綠色之顯示顏色而 加以顯示。 舉凡在所屬技術領域具有通常知識者皆能理 解，在本實施例中，由於各文字符號群集G卜G2與 G3受到文字符號群集切換單元5之切換控制而分別 以不同之顯示顏色來顯示，故在使用時不易造成視覺 混淆之效果。同時，由於各文字符號群集Gl、G2與 G3係重疊配置於觸碰層41相同之區域，故各個文字 符號群集Gl、G2與G3之各文字符號「勹女门C」、 「abc」與「1」可在較大之顯示面積中顯示。 請參閱第十一圖，其係顯示本發明第二實施例中 之各文字符號群集與其配置關係示意圖。如圖所示， 本實施例與第一實施例之最大不同處係以另一觸碰 層41 a取代第一實施例中之觸碰層41。該觸碰層41 a 之展示表面包含三個文字符號配置區411a、412a與 413a，且文字符號配置區411a、412a與413a内分別 佈設有文字符號群集Gl’、G2’與G3’。其中，文字符 號群集Gl’、G2’與G3’分別包含「勹女门匸」、「abc」 與「1」等文字符號。文字符號群集Gl’、G2’與G3’ 分別對應於不同之顯示顏色，在本實施例中文字符號 群集G1’係對應於紅色之顯示顏色，文字符號群集 G2’係對應於藍色之顯示顏色，文字符號群集G3’係 對應於綠色之顯示顏色。 同時，文字符號群集Gl’、G2’與G3’係分別佈設 有對應於各顯示顏色之濾光元件。在本實施例中，文 字符號群集G1’中之文字符號「勹女门C」係由紅光 π 200816034 濾光元件所組成，文字符號群集G2’中之文字符號 「abc」係由藍光濾光元件所組成，而文字符號群集 G35中之文字符號「1」係由綠光濾光元件所組成。 請繼續參閱第十二圖至第十四圖，其係顯示本發 明第二實施例切換顯示文字符號群集之一系列示意 圖。其中，第十二圖係顯示本發明第二實施例顯示其 中一文字符號群集之示意圖，第十三圖係顯示本發明 第二實施例顯示次一文字符號群集之示意圖，第十四 圖係顯示本發明第二實施例顯示另一文字符號群集 之示意圖。 如第十二圖所示，當文字符號群集切換單元5切 換至第三圖所示之第一個切換位置時，係對應於文字 符號群集G1’，此時，會驅動紅色背光源432發出紅 色光線，所發出之紅色光線會穿透或穿過中央透光區 域424而投射到觸碰層41a，並穿透由紅光濾光元件 所組成之文字符號群集G1’内之文字符號「勹女门 匚」，使文字符號群集G1’内之文字符號「勹女门C」 得以紅色之顯示顏色而加以顯示。由於紅色背光源 432發出紅色光線會被藍光濾光元件與綠光濾光元件 所阻隔，因此，並不會顯示文字符號群集G2’和G3’ 内之文字符號「abc」與「1」。 同樣地，如第十三圖所示，當文字符號群集切換 單元5切換至第三圖所示之第二個切換位置時，係對 應於文字符號群集G2’，此時會驅動藍色背光源433 發出藍色光線，所發出之藍色光線會穿透或穿過中央 透光區域424而投射到觸碰層41 a，並穿透由藍光濾 光元件所組成之文字符號群集G2’内之文字符號 「abc」，使文字符號群集G2’内之文字符號「abc」得 以藍色之顯示顏色而加以顯示。 12 200816034 如第十四圖所示，當文字符號群集切換單元5切 換至第三圖所示之第三個切換位置時，係對應於文字 符號群集G3’，此時會驅動綠色背光源434發出綠色 光線，所發出之綠色光線會穿透或穿過中央透光區域 424而投射到觸碰層41a，並穿透由綠光濾光元件所 組成之文字符號群集G3’内之文字符號「1」，使文字 符號群集G3’内之文字符號「1」得以綠色之顯示顏 色而加以顯示。 舉凡在所屬技術領域具有通常知識者皆能理 解，在本實施例中，可將紅色背光源432、藍色背光 源433與綠色背光源434之光線投射方向分別預先對 準觸碰層41a之文字符號配置區411a、412a與413a， 藉以增加有效之照度，促使文字符號群集Gl’、G2’ 與G3’内之「勺女Π C」、「abc」與「1」等文字符號 得以更清晰地被顯示出來。 在實務運用層面上，紅色背光源432可為一紅光 發光二極體（Light Emitting Diode ; LED)或一紅光 冷陰極管，藍色背光源433可為一藍光LED或一藍 光冷陰極管，綠色背光源434可為一綠光LED或一 綠光冷陰極管。同時，上述文字符號輸入單體4可配 置於上述行動電話200之觸碰式面板模組，且觸碰式 面板模組亦可與顯示面板3結合為一體。此外，在切 換上述之文字符號群集切換單元5時，必須同步切換 感應元件422與423，藉以在觸碰層41 a被押按時， 感應並傳送出代表對應文字符號之信號，此乃習知技 術所能輕易完成者，於此不再予以贅述。 藉由上述之本發明實施例可知，本發明確具產業 上之利用價值。惟以上之實施例說明，僅為本發明之 較佳實施例說明，舉凡所屬技術領域中具有通常知識 13 200816034 者當可依據本發明之上述實施例說明而作其它種種 之改良及變化。然而這些依據本發明實施例所作的種 種改良及變化，當仍屬於本發明之發明精神及界定之 專利範圍内。 【圖式簡單說明】 第一圖係顯示習知行動電話之立體外觀示意圖； 第二圖係顯示習知實施例中之各文字符號群集與其配置示 意圖； 第一圖係顯示本發明第一實施例運用於行動電話之外觀示 思圖； 第四圖係顯示本發明第一實施例局部外觀示意圖； 第五圖係顯示本發明第一實施例中文字符號輸入單體之立 體分解示意圖； 第六圖係顯示第五圖A-A剖面之剖面示意圖； 第七圖係顯示本發明第一實施例中之各文字符號群集與其 配置關係示意圖； 第八圖係顯示本發明第一實施例顯示其中一文字符號群集 之示意圖； 第九圖係i員示本發明第一實施例顯示次一文字符號群集之 示意圖； 第十圖係顯示本發明第一實施例顯示另一文字符號群集之 示意圖； 第十圖係顯示本發明第二實施例中之各文字符號群集與 14 200816034 其配置關係示意圖， 之示 意圖； 第十二圖係顯示第二實施例顯示其中一文字符號群隽 苐十二圖係顯示第二實施例顯示次一文字符號群隽 — 圖；以及^ 來之不意 第十四圖係顯示第二實施例顯示另一文字符號群集之示音 圖。 【主要元件符號說明】 100 行動電話 1 顯示面板 2 文字符號輸入單體 21、22、23 文字符號配置區 211、221、231 文字符號群集 200 行動電話 3 顯示面板 300 文子符號輸入裝置 4 文字符號輪入單體 41 > 41a 觸碰層 411a、412a、413a 文字符號配置區 42 感應層 421 感應層本體 422 感應元件 200816034 423 感應元件 424 中央透光區域 43 背光層 431 背光層本體 432 紅色背光源 433 藍色背光源 434 綠色背光源 5 文字符號群集切換單元 G 組合文字符號群集 G 卜 G2、G3 文字符號群集 Gl，、G2,、G3， 文字符號群集 16200816034 IX. Description of the Invention: [Technical Field] The present invention relates to a character symbol input device, and more particularly to a character symbol input device that can display a cluster of character symbols using different display colors. [Prior Art] In the existing portable electronic devices, especially data and signal processing electronic devices such as mobile phones, personal digital assistants (PDAs), language translators, and notebook computers, text symbol input devices are usually configured to A diversified function is implemented by the user to input text symbols to drive the electronic device to execute specific instructions. However, due to the large number of text symbols (such as 26 English letters, 38 Chinese phonetic symbols, 10 Arabic numerals, etc.), on the practical level of application, it is unlikely to waste the space of the wife for each The text symbol configures the exclusive input unit. Therefore, the current method is to divide the commonly used text symbols into different clusters of text symbols so that they can be distributed among the input monomers. In the following, we will use the mobile phone as a conventional embodiment to provide a more specific description of the above various aspects in conjunction with the drawings. Referring to the first and second figures, the first figure shows a stereoscopic appearance of a conventional mobile phone, and the second figure shows a schematic view of the arrangement of each character symbol on a text symbol input unit in the prior art. A mobile phone 100 includes a display panel 1 and a plurality of text symbol input cells 2 displaying different text symbols. One of the text symbols on the drawing input unit 2 is configured with three 5 200816034 symbol display areas 21, 22 and 23, and three character characters in the Si ikHf 23 are respectively arranged with three text symbol groups 11, 11, and Luo & The texts such as ", abc" and "spoon female threshold" are drawn in the first picture 'presented only in the second picture'). Wenzi Fuzhen (not $ - the user enters the command message on the mobile phone 1 (^ send a text message, dial or enter the communication data to ask for j), usually enter the Chinese ^ ^ number according to the actual needs. In practice On the above, it is usually necessary to switch the selected each character symbol input unit 2 by appropriate switching f. The representative is on the top one, ^ wide because the above three text symbol clusters are on the grid, and are not arranged in the three text symbol display areas. 21, and ^,, this newspaper is easy to cause visual confusion. ^ Γ, in order to cluster all three text symbols in 211, 221 盥 231 (ie "^, "讣~盥" prostitute ^The gate is disposed in the limited display of the text symbol input unit 2. The display area to which the parent-character symbol is assigned becomes a solution to the above problem, and the main object of the present invention is to provide a text symbol input device 'available Different colors are used to display the cluster of text symbols. [Summary of the Invention] ^ As described above, when conventional text symbols are arranged in text symbols, when they are inserted into a single unit, there is a tendency to cause visual confusion and each text symbol. Therefore, the main object of the present invention is to provide a text symbol input device in which the character symbol is divided into at least two character symbol clusters. Each character symbol cluster is composed of an excitation fluorescent material of different color lights or a colored optical filter or an optical element, so that when the different colored backlights are switched and selected, the corresponding symbol symbol clusters can be displayed in different colors. The technical means adopted by the technical means is to provide a character symbol input device, which comprises a plurality of character symbol input units, a backlight layer and a text symbol cluster switching unit. Each of the character symbol input monomers respectively comprises a touch layer and a The backlight layer and the touch layer are provided with at least two clusters of character symbols, each of which corresponds to a different display color, and the backlight layer selectively provides at least two colored backlights, and each of the colored backlights respectively corresponds to The above-mentioned text symbol cluster and display color. Text symbol cluster switching unit Switching between the above-mentioned cluster of text symbols, and according to switching the selected cluster of text symbols, the backlight layer is provided with a colored backlight corresponding to the display color corresponding to the cluster of text symbols, thereby displaying the selected symbol symbol cluster Corresponding display color. In one embodiment of the present invention, each character symbol cluster can be overlapped and arranged on the touch layer of the character symbol input unit, so that the text symbols in the text symbol cluster can be allocated to the conventional The larger display area in the embodiment. It can be seen from the above that compared with the prior art, the text symbol input device provided by the present invention can not only display the corresponding character symbol cluster by different display colors, thereby effectively solving the problem. The problem of visual confusion is caused by the fact that the cluster of character symbols can be superimposed on the character symbol input unit by the present invention to increase the display area of each character symbol. 7 200816034 The specific embodiments of the present invention will be further described by the following embodiments and drawings. [Embodiment] Since the text symbol input device provided by the invention can be widely applied to various electronic devices having data input functions, the combined implementation manners are numerous, and therefore will not be repeated here, only enumerating them in action. The second preferred embodiment of the telephone application is described. Please refer to the third to seventh figures. 3 is a schematic diagram showing the appearance of a first embodiment of the present invention applied to a mobile phone, the fourth drawing is a partial appearance view of the first embodiment of the present invention, and the fifth figure is a text symbol inputting list in the first embodiment of the present invention. FIG. 6 is a schematic cross-sectional view showing a cross section of the fifth diagram AA, and the seventh diagram is a schematic diagram showing the relationship between each character symbol cluster and its configuration in the first embodiment of the present invention. As shown, a mobile phone 200 includes a display panel 3 and a character symbol input device 300. The character symbol input device 300 includes a plurality of character symbol input units 4 and a character symbol cluster switching unit 5. Each of the character symbol input units 4 includes a touch layer 41, a sensing layer 42 and a backlight layer 43. The display surface of one of the touch layers 41 is provided with a combined character symbol cluster G, and the combined text symbol cluster G is composed of three character symbol clusters G, G2 and G3. Among them, the character symbol clusters G1, G2, and G3 respectively include text symbols such as "prostitute threshold", "abc", and "1" (as shown in the seventh figure), and the character symbol clusters G1·, G2, and G3 overlap. Configured in the same area. The character symbol clusters G1, G2, and G3 respectively correspond to different display colors. In this embodiment, the character symbol cluster G1 corresponds to the red display color, and the character symbol cluster G2 corresponds to the 8 200816034 blue display color, the text symbol. The cluster G3 corresponds to the display color of green. At the same time, the text symbol "Women Gate C" in the text symbol cluster G1 is coated with a red light-emitting fluorescent material, and the text symbol "abc" in the text symbol cluster G2 is coated with a blue light-emitting fluorescent material, and the text symbol cluster G3 The text symbol "1" is coated with green light to activate the fluorescent material. The sensing layer 42 is located below the touch layer and includes an inductive layer body 421, two sensing elements 422 and 423, and a central light transmissive region 424. The sensing elements 422 and 423 are disposed on the sensing layer body 421 at a position facing the touch layer 41. When the touch layer 41 is pressed, it is used to sense and transmit a signal representing one of the text symbols located on the touch layer 41. . In the present embodiment, the central light-transmitting region 424 is composed of a light-transmitting material. However, in practice, the central light-transmitting region 424 may be formed by directly hollowing through the sensing layer 42. The backlight layer 43 is located below the sensing layer 42 and includes a backlight layer body 431 and three colored backlights. In this embodiment, the three colored backlights correspond to the display colors of red, blue, and green, respectively, and are a red backlight 432, a blue backlight 433, and a green backlight 434. The character symbol cluster switching unit 5 is configured to switch between the above-mentioned character symbol clusters G1, G2, and G3, as shown in the third figure, the three switching positions of the text symbol cluster switching unit 5, that is, respectively corresponding to the character symbol cluster Gl, G2 and G3. Please refer to the eighth to tenth drawings, which are schematic diagrams showing a series of switching display character symbol clusters according to the first embodiment of the present invention. The eighth figure shows a schematic diagram showing a cluster of text symbols in the first embodiment of the present invention, the ninth figure shows a schematic diagram showing the cluster of the next character symbol in the first embodiment of the present invention, and the tenth figure shows the first embodiment of the present invention. The example shows a schematic diagram of another cluster of literal symbols. 9 200816034 As shown in the eighth figure, when the text symbol cluster switching unit 5 switches to the first switching position shown in the third figure, it corresponds to the text symbol cluster G1, and at this time, the red backlight 432 is driven to emit red. The red light emitted by the light penetrates or passes through the central light-transmitting region 424 and is projected onto the touch layer 41, and excites the text symbol "Gen's threshold" in the cluster of text symbols G1 coated with the red-light-emitting fluorescent material. The character symbol "Women's Gate C" in the character symbol cluster G1 is displayed in red color. Since the red light emitted by the red backlight 432 does not excite the blue excitation phosphor and the green excitation phosphor, the text symbols "abc" and "1" in the character symbol clusters G2 and G3 are not displayed. . Similarly, as shown in the ninth figure, when the text symbol cluster switching unit 5 switches to the second switching position shown in the third figure, it corresponds to the character symbol cluster G2, and at this time, the blue backlight 433 is driven. Blue light is emitted, and the emitted blue light penetrates or passes through the central light-transmitting region 424 and is projected onto the touch layer 41, and excites the text symbol in the cluster of text symbols G2 coated with the blue-excited fluorescent material. Abc" causes the text symbol "abc" in the character symbol cluster G2 to be displayed in blue. When the text symbol cluster switching unit 5 switches to the second switching position shown in the third figure, it corresponds to the text symbol cluster G2, and the blue backlight 433 is driven to emit blue light, and the emitted blue light is emitted. It will penetrate or pass through the central light-transmitting region 424 and project to the touch layer 41, and excite the text symbol "abc" in the cluster of text symbols G2 coated with the blue-light-excited fluorescent material, so that the text symbol in the text symbol cluster G2 "abc" is displayed in blue color. As shown in the tenth figure, when the text symbol cluster switching unit 5 switches to the third switching position shown in the third figure, it corresponds to the text symbol cluster G3, and the green backlight 434 is driven to emit green light 10 200816034 The green light emitted by the line penetrates or passes through the central light transmissive region 424 and is projected onto the touch layer 41, and excites the text symbol "1" in the cluster of text symbols G3 coated with the green light-emitting fluorescent material. The character symbol "1" in the character symbol cluster G3 is displayed in green color. It can be understood by those skilled in the art that in the present embodiment, since each character symbol cluster G b G2 and G3 are respectively controlled by the switching function of the character symbol cluster switching unit 5, they are respectively displayed in different display colors. It is not easy to cause visual confusion when used. At the same time, since each of the character symbol clusters G1, G2, and G3 is overlapped and disposed in the same area of the touch layer 41, the respective character symbols of the character symbol clusters G1, G2, and G3 are "Women Gate C", "abc", and " 1" can be displayed in a larger display area. Referring to Fig. 11, there is shown a schematic diagram showing the relationship between each character symbol cluster and its configuration in the second embodiment of the present invention. As shown in the figure, the maximum difference between this embodiment and the first embodiment is that the touch layer 41 in the first embodiment is replaced by another touch layer 41a. The display surface of the touch layer 41a includes three character symbol arrangement areas 411a, 412a, and 413a, and character symbol clusters G1', G2', and G3' are disposed in the character symbol arrangement areas 411a, 412a, and 413a, respectively. Among them, the character clusters Gl', G2', and G3' respectively include character symbols such as "prostitute threshold", "abc", and "1". The character symbol clusters G1', G2', and G3' respectively correspond to different display colors. In this embodiment, the character symbol cluster G1' corresponds to the display color of red, and the character symbol cluster G2' corresponds to the display color of blue. The text symbol cluster G3' corresponds to the green display color. At the same time, the letter symbol clusters G1', G2' and G3' are respectively provided with filter elements corresponding to the respective display colors. In the present embodiment, the character symbol "Yomen Gate C" in the character symbol cluster G1' is composed of a red light π 200816034 filter element, and the text symbol "abc" in the character symbol cluster G2' is filtered by blue light. The elements are composed, and the character symbol "1" in the character symbol cluster G35 is composed of green light filtering elements. Referring to Figures 12 through 14, there is shown a series of schematic diagrams showing a cluster of display text symbols in a second embodiment of the present invention. The twelfth figure shows a schematic diagram showing a cluster of text symbols in the second embodiment of the present invention, and the thirteenth figure shows a schematic diagram showing a cluster of sub-character symbols in the second embodiment of the present invention, and the fourteenth embodiment shows the present invention. The second embodiment shows a schematic diagram of another cluster of literal symbols. As shown in the twelfth figure, when the text symbol cluster switching unit 5 switches to the first switching position shown in the third figure, it corresponds to the character symbol cluster G1', and at this time, the red backlight 432 is driven to emit red. The red light emitted by the light passes through or through the central light-transmitting region 424 and is projected onto the touch layer 41a, and penetrates the text symbol "prostitute" in the cluster of text symbols G1' composed of red light filtering elements. The threshold is such that the text symbol "Women's Gate C" in the character symbol cluster G1' is displayed in red. Since the red backlight 432 emits red light, it is blocked by the blue filter element and the green filter element. Therefore, the character symbols "abc" and "1" in the character symbol clusters G2' and G3' are not displayed. Similarly, as shown in the thirteenth figure, when the text symbol cluster switching unit 5 switches to the second switching position shown in the third figure, it corresponds to the text symbol cluster G2', and the blue backlight is driven at this time. 433 emits blue light, and the emitted blue light penetrates or passes through the central light-transmitting region 424 and is projected onto the touch layer 41a, and penetrates into the text symbol cluster G2' composed of the blue light filter elements. The text symbol "abc" causes the text symbol "abc" in the character symbol cluster G2' to be displayed in blue. 12 200816034 As shown in FIG. 14 , when the text symbol cluster switching unit 5 switches to the third switching position shown in the third figure, it corresponds to the text symbol cluster G3 ′, and the green backlight 434 is driven to be emitted. The green light, the emitted green light will penetrate or pass through the central light-transmitting region 424 and be projected onto the touch layer 41a, and penetrate the text symbol "1" in the cluster of character symbols G3' composed of the green light filtering elements. Then, the character symbol "1" in the character symbol cluster G3' is displayed in a green color. It can be understood by those skilled in the art that in the present embodiment, the light projection directions of the red backlight 432, the blue backlight 433, and the green backlight 434 can be pre-aligned with the text of the touch layer 41a, respectively. The symbol arrangement areas 411a, 412a, and 413a are used to increase the effective illuminance, and the text symbols such as "spoon Π C", "abc", and "1" in the symbol symbol clusters G1', G2', and G3' are more clearly displayed. It is displayed. In practical practice, the red backlight 432 can be a red light emitting diode (LED) or a red light cold cathode tube, and the blue backlight 433 can be a blue LED or a blue cold cathode tube. The green backlight 434 can be a green LED or a green cold cathode tube. At the same time, the above-mentioned character symbol input unit 4 can be disposed in the touch panel module of the mobile phone 200, and the touch panel module can also be integrated with the display panel 3. In addition, when switching the above-mentioned character symbol cluster switching unit 5, it is necessary to synchronously switch the sensing elements 422 and 423, so that when the touch layer 41a is pressed, the signal representing the corresponding character symbol is sensed and transmitted. The technology can be easily completed, and will not be repeated here. As can be seen from the above-described embodiments of the present invention, the present invention has industrial use value. However, the above embodiments are merely illustrative of the preferred embodiments of the present invention, and those of ordinary skill in the art can be modified and changed in accordance with the above-described embodiments of the present invention. However, various modifications and changes made in accordance with the embodiments of the present invention are still within the scope of the invention and the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS The first figure shows a schematic appearance of a conventional mobile phone; the second figure shows a cluster of text symbols in a conventional embodiment and a schematic view of the configuration thereof; The fourth embodiment shows a partial appearance of the first embodiment of the present invention; the fifth figure shows a three-dimensional exploded view of the input unit of the character symbol in the first embodiment of the present invention; FIG. 7 is a schematic cross-sectional view showing a cross section of a fifth embodiment of the present invention; FIG. 7 is a schematic view showing a cluster of each character symbol in the first embodiment of the present invention; The ninth figure shows a schematic diagram showing a cluster of the next character symbol in the first embodiment of the present invention; the tenth figure shows a schematic diagram showing another cluster of character symbols in the first embodiment of the present invention; Schematic diagram of the configuration relationship between each character symbol cluster and 14 200816034 in the second embodiment; The second embodiment is shown to display one of the text symbol groups, the twelve-picture display system, the second embodiment, the display of the next-word symbol group, the map, and the second, the fourth embodiment, the second embodiment, showing another text symbol cluster. The sound map. [Description of main component symbols] 100 Mobile phone 1 Display panel 2 Text symbol input unit 21, 22, 23 Text symbol arrangement area 211, 221, 231 Text symbol cluster 200 Mobile phone 3 Display panel 300 Text symbol input device 4 Text symbol wheel Incoming monomer 41 > 41a Touch layer 411a, 412a, 413a Character symbol arrangement area 42 Sensing layer 421 Sensing layer body 422 Inductive element 200816034 423 Inductive element 424 Central light transmissive area 43 Backlight layer 431 Backlight layer body 432 Red backlight 433 Blue backlight 434 Green backlight 5 Text symbol Cluster switching unit G Combined text symbol cluster G Bu G2, G3 Text symbol cluster Gl, G2, G3, Text symbol cluster 16