M358987 五、新型說明： 【新型所屬之技術領域】 本創作係關於一種具有圖案切換裝置之導光板，利用不同的 光源切換產生不同導光板上的圖案顯示。 【先前技術】 導光板在眾多的電子產品中都有重要的角色，例如手機、筆 記電腦、液晶顯示器等。請參閱圖一，導光板1〇上具有複數個 反射點11，其大小或疏密分佈不盡相同，基本上依距離光源12 的遠近而^。此反射點U可以使用射出成型、模壓成型或網版 印刷等方絲製作，其目的是純於導純1G的點光源或線光 源12所射人導光板1G的光線13改變其方向由導光板⑺的出光 面I4射出，並藉由反射，點U的大小或疏密分佈來達到均勾的出 光。 清參閱圖一，在導光板應用上，例如手機鍵盤㈣㈣），由 導光板10射出的光線U隨即射向一圖案層Μ，此圖案層具 有事先設計的透光區21及不透光區22，不透光區Μ會將導: 板〇射出的光線I3擒住使其無法穿透透光區h則容許光線 透X此讓使用者在外部光源不足的時後依然可辨識圖案 層20上的圖案，亦即習知的導光板所擔任的角色只是提供背 光，至於顯示圖案則由覆蓋在背光模組上的圖案層來決定，例如 手機鍵盤上的數子及其他符號，當鍵盤上的職層拿掉之後，則 3 M358987 . 通常只會看到由導光板作用所形成的面光源。 中華民國專利第1 283779號『導光板及採用該導光板之圖案 顯不裝置』提供一種在導光板上直接利用反射點排列圖案之裝 置八係在導光板之底面上设有分佈之小方格，每一小方格均可 §作一像素單兀，該小方格之中於需做圖案顯示之方格處設有截 面為直角—角形之凹槽，且該凹槽之斜面係面向入光面設置，其 餘之方格則不作處理，即保持平面，該凹槽之斜面即排列成需顯 _ 示之圖案’當底面上成行列分佈之小方格分割愈細時，圖案愈清 晰。 上述第I 283779號專利主要是提供利用導光板與圖案層做 結合利用導光板直接做為圖案的顯示，惟該裝置僅能提供單一圖 案的顯示，對於導光板的利用度相對的減少。 有鑑於此，提供一種具有圖案切換裝置之導光板，利用不同 ^ 光源切換以產生不同導光板上的圖案顯示實為必要。 【新型内容】 本創作之主要目的在提供一種具有圖案切換裝置之導光 板，利用複數具有反射點圖案設計之導光板以疊層設置，再配 合不同光源切換，各別點亮的光源可作用於相對的導光板上， 以顯示各導光板上的圖案。 本創作確信新穎之特徵詳述於後附之申請專利範圍中。然 而新型之結構、目的及優點，藉由參考下列之敘述及附圖，當 4 M358987 可更加容易了解。 【實施方式】 如圖三所示為本創作具有圖案切換裝置之導光板之第—實 施例’包括複數導光板為疊層設置，本實施例以二片導光板來做 說明，如第一導光板31及第二導光板32 ;複數光源33、34與 ' 複數導光板31、32的數量相同，如第一光源33靠近在第一導光 • 板31的側邊，而第二光源34靠近在第二導光板32的側邊；及 一反射片35設置在第二導光板32的底部，可防止光束自第二導 光板32的底面射出。在第一導光板31及第二導光板32上各有 由複數個反射點311、321所組成的圖案，該反射點可配合複數 光源33、34產生圖案。 當要顯不第一導光板31上的圖案時，便使第一光源33作動 發出亮光以提供第一導光板31光源， 32之第一光源3 4關閉。第一光源3 3 同時，將提供第二導光板M358987 V. New description: [New technical field] This creation is about a light guide plate with a pattern switching device, which uses different light sources to switch to produce pattern display on different light guide plates. [Prior Art] Light guides have important roles in many electronic products, such as mobile phones, notebook computers, and liquid crystal displays. Referring to FIG. 1 , the light guide plate 1 has a plurality of reflection points 11 , and the size or the density distribution thereof are not the same, and basically depends on the distance from the light source 12 . The reflection point U can be formed by square wire such as injection molding, compression molding or screen printing, and the purpose thereof is to purely guide the pure light 1G point light source or the line light source 12 to the light guide plate 1G to change the direction of the light guide plate. The light exiting surface I4 of (7) is emitted, and by the reflection, the size or density distribution of the point U is used to achieve the uniform light output. Referring to FIG. 1 , in the application of the light guide plate, for example, the mobile phone keyboard (4) (4), the light U emitted by the light guide plate 10 is then directed toward a pattern layer having a light transmission area 21 and an opaque area 22 which are designed in advance. The opaque area will guide: the light I3 emitted by the board is blocked so that it cannot penetrate the light transmission area h, and the light is allowed to pass through X. This allows the user to recognize the pattern layer 20 after the external light source is insufficient. The pattern, that is, the role of the conventional light guide plate is only to provide backlighting, and the display pattern is determined by the pattern layer covering the backlight module, such as the number on the keyboard of the mobile phone and other symbols, when on the keyboard After the job is removed, 3 M358987. Usually only the surface light source formed by the action of the light guide plate is seen. The Republic of China Patent No. 1 283779 "Light Guide Plate and Pattern Display Device Using the Light Guide Plate" provides a device for directly arranging patterns on a light guide plate by using a reflection point, and a small square having a distribution on the bottom surface of the light guide plate Each small square can be made into a single pixel, and the square of the small square is provided with a right-angled-angled groove at the square where the pattern is to be displayed, and the inclined surface of the groove is facing in. The smooth surface is set, and the remaining squares are left unprocessed, that is, the plane is maintained, and the slopes of the grooves are arranged in a pattern to be displayed. The smaller the squares are arranged in the rows and columns on the bottom surface, the clearer the pattern is. The above-mentioned Patent No. I 283779 mainly provides a display in which a light guide plate is directly used as a pattern by using a light guide plate in combination with a pattern layer, but the device can only provide a single pattern display, and the utilization of the light guide plate is relatively reduced. In view of the above, there is provided a light guide plate having a pattern switching device, which is necessary to switch between different light sources to produce a pattern display on different light guide plates. [New content] The main purpose of this creation is to provide a light guide plate with a pattern switching device, which is arranged by stacking a plurality of light guide plates with a reflective dot pattern design, and then switched with different light sources, and the respective light sources can be applied to The opposite light guide plates are used to display the patterns on the respective light guide plates. This creation is believed to be novel and is described in the appended claims. However, the new structure, purpose and advantages can be more easily understood by reference to the following description and drawings. [Embodiment] As shown in FIG. 3, the first embodiment of the light guide plate having the pattern switching device includes a plurality of light guide plates arranged in a stack. In this embodiment, two light guide plates are used for description, such as the first guide. The light source 31 and the second light guide plate 32; the plurality of light sources 33, 34 are the same as the number of the plurality of light guide plates 31, 32, such as the first light source 33 is close to the side of the first light guide plate 31, and the second light source 34 is close to On the side of the second light guide plate 32; and a reflection sheet 35 is disposed at the bottom of the second light guide plate 32 to prevent the light beam from being emitted from the bottom surface of the second light guide plate 32. Each of the first light guide plate 31 and the second light guide plate 32 has a pattern composed of a plurality of reflection points 311, 321 which can be patterned in conjunction with the plurality of light sources 33, 34. When the pattern on the first light guide plate 31 is to be displayed, the first light source 33 is actuated to emit light to provide the light source of the first light guide plate 31, and the first light source 34 of 32 is turned off. First light source 3 3 at the same time, a second light guide plate will be provided
線將在第一導光板31 反射點311則較暗，形成 導光板3丨上的反射點 則在第一導光板31的屮 而其餘未遭到反射點311破壞光路徑之光 丨内繼續傳播，故第一導光板31沒有設置 形成反射點311圖案的背景，例如，第一 1 3 11組成如圖五所示之英文字母，，八”， A” ，反 的出光面上會看到該英文字母” M358987 之，當要顯示第二導光板32上的圖案時便 文1文弗—光源3 4作動 發出亮光以提供第二導光板32光源，同時，將提供第—導光板 ”之第-光源33關閉’第二光源34所產生的入射光將在第二 事光板32内傳播，當光線碰到反射點321時，其光線路徑將遭 爱破壞’光線轉向上出光面射出’並穿透高透明的第一導光板 31，因此第二導光板32在該反射點 主現冗點，而其餘未遭 到反射點321破壞光路徑之光線將在第__ 牡乐—導先板32内繼續傳 導，而在第二導光板32沒有設置反射點 町點j21則較暗，形成反射 點321圖案的背景，例如，若第導 等尤板32上的反射點321組 成如圖六所示之英文字母” a” ，則在第__ j仕弟一導光板32的出光面 上會看到該英文字母” a” 。 承上述，若同時作動第一光源33及第二光源34，則第一導 光板31及第二導光板32上的反射點311、321將同時呈現，形 成二圖案的組合，此-相同原理可適用於更多的導光板疊層設 置組合’呈現更多種不同的圖案變化。 請參閱圖四所示，為本創作具有圖案切換裝置之導光板之第 二實施例，它們的零組件和圖三一樣被一一標示出來。但是，為 了能防止光線外洩，本實施例在第一導光板31及第二導光板32 的一側邊設有遮光結構41與第一光源33、第二光源％相對， 例如，塗上黑色油墨或貼上遮光膠帶，使第一光源33無法射入 第二導光板32，而第二光源34無法射入第一導光板31，讓不同 光源不互相干擾的效果。 6 M358987 總而言之，本創作利用複數具有反射點圖案設計之導光板疊 層δ又置再配合不同光源城’各別點亮不同的光源作用不同的導 光板產生不同導光板上的圖案顯示可有效的增加導光板的利用 度。 尽創作之貫施例6經朗於前，但是對於熟知此技藝之 人士而言，其他各種可«達叙變化或較1我離本創 作之精神。在申請專·_也科涵蓋本創作精神範圍内之 所有變化或修改。 【圖式簡單說明】 圖一為習知導光板結構應用示意圏。 圖二為習知導練搭配圖案層之結構應用示㈣ 圖三為本創作之第一實施例。 圖四為本創作之第二實施例。 圖五為本創作圖案顯示之示意圖。 圖六為本創作圖案顯示之示意圖。 第二導光板32 第二光源34 反射點311 遮光結構41 【主要元件符號說明】 第一導光板3 1 第一光源33 反射片35 反射點321 7The line will be darker at the reflection point 311 of the first light guide plate 31, and the reflection point formed on the light guide plate 3丨 will continue to propagate in the pupil of the first light guide plate 31 while the rest is not damaged by the reflection point 311. Therefore, the first light guide plate 31 is not provided with a background forming a pattern of reflection points 311. For example, the first 1 3 11 is composed of an English letter as shown in FIG. 5, and eight", A", which is seen on the opposite light surface. In the English letter "M358987", when the pattern on the second light guide plate 32 is to be displayed, the text 1 - the light source 3 4 is actuated to emit light to provide the light source of the second light guide plate 32, and at the same time, the first light guide plate will be provided. - the light source 33 is turned off. The incident light generated by the second light source 34 will propagate in the second light guide plate 32. When the light hits the reflection point 321, the light path will be destroyed by the love light "light is turned to the light exit surface" and worn. The first light guide plate 31 is transparent, so that the second light guide plate 32 is redundant at the reflection point, and the rest of the light that is not damaged by the reflection point 321 is in the first __ 乐乐-guide plate 32 Continue to conduct inside, but no reverse is set on the second light guide plate 32 The point point j21 is darker, forming a background of the reflection point 321 pattern. For example, if the reflection point 321 on the first guide 32 forms an English letter "a" as shown in Fig. 6, then in the __j The English letter "a" will be seen on the light-emitting surface of the light guide 32. In the above, if the first light source 33 and the second light source 34 are simultaneously activated, the reflection points 311 and 321 on the first light guide plate 31 and the second light guide plate 32 will be simultaneously presented to form a combination of two patterns. Suitable for more light guide stack settings combination 'presents more different pattern changes. Referring to FIG. 4, a second embodiment of the light guide plate having the pattern switching device is shown, and their components are labeled as shown in FIG. However, in order to prevent leakage of light, the light shielding structure 41 is disposed on one side of the first light guide plate 31 and the second light guide plate 32, and is opposite to the first light source 33 and the second light source. For example, black is applied. The ink or the light-shielding tape is attached so that the first light source 33 cannot enter the second light guide plate 32, and the second light source 34 cannot enter the first light guide plate 31, so that different light sources do not interfere with each other. 6 M358987 In summary, this creation is effective by using a plurality of light guide plate laminates with reflective dot pattern design and arranging different light source panels to illuminate different light guide plates to produce different light guide plates. Increase the utilization of the light guide plate. The six examples of creation are based on the former, but for those who are familiar with the art, there are other kinds of things that can be changed or more than the spirit of creation. All changes or modifications within the scope of this creative spirit are covered by the application. [Simple description of the drawing] Figure 1 is a schematic diagram of the application of the conventional light guide plate structure. FIG. 2 is a structural application diagram of a conventional guide with a pattern layer. FIG. 3 is a first embodiment of the present invention. Figure 4 is a second embodiment of the present invention. Figure 5 is a schematic diagram of the creation pattern display. Figure 6 is a schematic diagram of the creation pattern display. Second light guide plate 32 Second light source 34 Reflecting point 311 Light blocking structure 41 [Description of main components] First light guide plate 3 1 First light source 33 Reflecting sheet 35 Reflecting point 321 7