1351557 [0001] [0002] [0003] [0004] [0005] 094120207 100年08月22日按正替换頁 發明說明： 【發明所屬之技術領域】 本發明涉及一種導光板及應用該導光板之顯示裝置。 【先前技術】 近年來，手機之功能已從最初之語音業務拓展到附帶文 本及圖像之資料通訊業務，折疊式手機成為全球用戶傾 向性之需求之一。手機顯示愈來愈精細，屏幕愈來愈大 ，清晰度亦愈來愈高，且對輕巧外形之需求亦持續增加 〇 據統計，2003年對折疊式手機之需求已佔全球手機總需 求之25%，隨著公眾對手機屏幕顯示、資料通訊及拍照功 能之需求迅速增長，預計折疊式手機之需求量會更大。 先前技術之折疊式手機採用兩套背光系統分別提供主屏 與副屏所需之背光，如第一圖所示，LED光源37發出之光 進入導光板33、39内傳輸，並從出光面330、390透出以 照亮主屏35及副屏31。但是，採用兩套背光系統之手機 不僅耗電高，無法滿足用戶希望待機時間長之要求，而 且具有手機所需元件數量較多、成本高、顯示屏製造複 雜等缺點。 有鑑於此，提供一種手機所需元件少、成本低、顯示屏 製造簡單並可達到相同顯示效果之導光板及顯示裝置實 為必須。 【發明内容】 以下，將以實施例說明一種可減少顯示裝置所需元件之 表單編號A0101 第3頁/共12頁 1003307792-0 [0006] 1351557 100年08月22日修正替換頁 導光板以及採用上述導光板之顯示裝置。 [0007] 為實現上述内容，提供一種導光板，該導光板包括一入 光面、相對之第一出光面與第二出光面，該第一出光面 及第二出光面上分別形成有呈V形溝槽之第一微結構及第 二微結構，所述第一微結構的頂部和第二微結構的頂部 交錯分佈，相鄰所述第一微結構之間具有第一間隔，相 鄰所述第二微結構之間具有第二間隔，所述第一微結構 的高度小於第二微結構的高度。 [0008] 以及，本實施例還提供一種顯示裝置，該顯示裝置包括 · 主顯示模組、副顯示模組、一位於主顯示模組、副顯示 模組之間之導光板及光源，該導光板包括一入光面及相 對之第一出光面與第二出光面，該第一出光面、第二出 光面上分別形成有呈V形溝槽之第一微結構及第二微結構 ，所述第一微結構的頂部和第二微結構的頂部交錯分佈 ，相鄰所述第一微結構之間具有第一間隔，相鄰所述第 二微結構之間具有第二間隔，所述第一微結構的高度小 於第二微結構的高度。 ® [0009] 相較於先前技術，本實施例提供之導光板具有相對之二 出光面，光源發出之光進入導光板並分別從二出光面透 出，該透出之光分別照亮主顯示模組、副顯示模組，使 用一導光板即可實現手機雙屏顯示功能，故，可減少手 機顯示功能所需之元件、降低成本、顯示裝置製造簡單 〇 【實施方式】 094120207 請一併參閱第二圊及第三圖，其係本發明實施例所提供 表單編號A0101 第4頁/共12頁 1003307792-0 [0010] 1351.557 _ 100年08月22日按正替换頁 之導光板14，該導光板14為平板形，其包括—人光面14〇 、及與入光面140相連之第-出光面142與第二出光面 • 144。該第一出光面142與第二出光面144係相對設置， 第一出光面142上形成有第一微結構1422，第二出光面 144上形成有第二微結構1444。 [0011] 第一微結構H22與第二微結構1444均呈“V”形，該第 一微結構1422之寬度為'、高度為、、頂部夾角為（1， 第二微結構1444之寬度為％、高度為、、頂部夹角為（2 φ 。其中，W1(W2、hl(h2、（/(2，且'小於5微米、、（5 微米、〇度（（2(90度、90度（（丨（18〇度。 [0012] 第一微結構1422、第二微結構1444均為不連續設置，相 鄰第一微結構1422、相鄰第二微結構1444之間分別具有 間隔，第一微結構1442、第二微結構1444之頂部係交錯 設置，即頂部不在同一條平行於入光面14〇之直線上。 [0013] 由於hi(h2，第一微結構H22與第二微結構1444相較而 言，第一微結構1422對入射至其上的光之入射角影響較 ® 小、第二微結構1444對入射至其上的光之入射角影響較 大，大部份光可從第一出光面142透出，而只有小部份光 從第二出光面144透出，故，第一出光面142可提供充足 光之照亮顯示屏（圖未示）。 [0014] 請參閱第四圖所示，本發明提供之顯示裝置1〇包括主顯 示模組12、導光板14、副顯示模組16及複數光源18。 [0015] 光源18可為LED (發光二極體）、ELD (電致發光二極體 )’該光源18具有發光面180，光源18位於導光板14入 094120207 表單編號A0101 第5頁/共12頁 1003307792-0 1351557 [0016] [0017] [0018] [0019] [0020] [0021] [0022] 094120207 100年08月22日修正替換頁 光面140—侧，發光面180朝向導光板14之入光面140。 導光板14位於主顯示模組12與副顯示模組16之間，且第 一出光面142面向主顯示模組12以提供充足之光照亮主顯 示模組12，第二出光面144朝向副顯示模組16方向。 光源18發出之光進入導光板14並不斷向前傳輸，分別從 第一出光面142 '第二出光面144透出以照亮主顯示模組 12、副顯示模組16 » 本發明實例之導光板亦可為楔形，導光板之材料可為聚 碳酸酯（PC)、聚曱基丙烯酸曱酯（PMMA)等合成樹脂。 本發明實施例之導光板及顯示裝置可採用於入光面形成 第三微結構，用於提高入射光之均勻性，該第三微結構 包括鋸齒棱鏡結構、錐形結構等。 本發明顯示裝置還可進一步包括複數圍繞光源之反光罩 ，用於提高光之利用率，該等反光罩截面為圓弧形。 本發明之導光板具有相對之二出光面，光源發出之光進 入導光板傳輸並從二出光面透出，該透出之光可照亮主 顯不模具及副顯示模組，藉由出光面上之微結構控制從 二出光面透出光之能量，以提供主顯示模組、副顯示模 組實現顯示功能所需之光。 本發明之顯不裝置使用具二出光面之導光板，主顯示模 組、副顯示模組分別位於二出光面一側，使用一套背光 模组即可實現雙屏顯示功能，故，該顯示裝置所需要之 元件減少，從而使得成本降低、製造簡單。 表單編號A0101 第6頁/共12頁 1003307792-0 1351,557 100年08月22日修正替换頁 [0023] 综上所述，本發明符合發明專利要件，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例，舉凡 熟悉本發明技藝之人士，在援依本發明創作精神所作之 等效修飾或變化，皆應包含於以下之申請專利範圍内。 【圖式簡單說明】 [0024] 第一圖係先前技術之折疊手機顯示屏示意圖。 [0025] 第二圖係本發明導光板之立體示意圖。 [0026] 第三圖係第二圖中第III部份之放大平面圖。。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Device. [Prior Art] In recent years, the functions of mobile phones have expanded from the initial voice service to the data communication service with text and images, and the folding mobile phone has become one of the demands of global users. The display of mobile phones is getting more and more fine, the screen is getting bigger and bigger, the clarity is getting higher and higher, and the demand for lightweight form factor is also increasing. According to statistics, the demand for folding mobile phones in 2003 has accounted for 25% of the total demand for mobile phones in the world. %, as the demand for mobile screen display, data communication and camera functions is growing rapidly, it is expected that the demand for folding mobile phones will be even greater. The folding mobile phone of the prior art uses two sets of backlight systems to provide the backlights required for the main screen and the sub-screen respectively. As shown in the first figure, the light emitted by the LED light source 37 enters the light guide plates 33, 39 for transmission, and is emitted from the light-emitting surface 330, The 390 is permeable to illuminate the main screen 35 and the sub-screen 31. However, a mobile phone using two sets of backlight systems not only consumes a large amount of power, but also cannot meet the requirements of a user who desires a long standby time, and has many disadvantages such as a large number of components required for a mobile phone, high cost, and complicated display manufacturing. In view of the above, it is necessary to provide a light guide plate and a display device which require fewer components, lower cost, simple display manufacturing, and the same display effect. SUMMARY OF THE INVENTION Hereinafter, a form number A0101 which can reduce the components required for a display device will be described by way of example. Page 3/12 pages 1003307792-0 [0006] 1351557 Correction replacement page light guide plate and use adopted on August 22, 100 The display device of the above light guide plate. [0007] In order to achieve the above, a light guide plate is provided. The light guide plate includes a light incident surface, a first light emitting surface and a second light emitting surface, and the first light emitting surface and the second light emitting surface are respectively formed with V a first microstructure of the shaped trench and a second microstructure, wherein a top portion of the first microstructure and a top portion of the second microstructure are staggered, and a first interval is adjacent between the first microstructures, adjacent to There is a second spacing between the second microstructures, the height of the first microstructure being less than the height of the second microstructure. [0008] The present embodiment further provides a display device, including: a main display module, a sub display module, a light guide plate and a light source between the main display module and the sub display module, and the light guide The light plate includes a light incident surface and a first light emitting surface and a second light emitting surface, and the first light emitting surface and the second light emitting surface respectively form a first microstructure and a second microstructure in a V-shaped groove. The top of the first microstructure and the top of the second microstructure are staggered, with a first interval between adjacent first microstructures and a second interval between adjacent second microstructures, The height of a microstructure is less than the height of the second microstructure. [0009] Compared with the prior art, the light guide plate provided in this embodiment has two opposite light emitting surfaces, and the light emitted by the light source enters the light guide plate and respectively passes through the two light emitting surfaces, and the light that passes through illuminates the main display respectively. The module and the sub-display module can realize the dual-screen display function of the mobile phone by using a light guide plate, so that the components required for the display function of the mobile phone can be reduced, the cost can be reduced, and the display device can be manufactured simply. [Embodiment] 094120207 Please refer to Second and third figures, which are provided by the embodiment of the present invention, form number A0101, page 4, total 12 pages, 1003307792-0 [0010] 1351.557 _ August 22, 100, according to the positive replacement page of the light guide plate 14, which The light guide plate 14 has a flat plate shape, and includes a human light surface 14A and a first light exit surface 142 and a second light exit surface 144 connected to the light incident surface 140. The first light-emitting surface 142 is opposite to the second light-emitting surface 144. The first light-emitting surface 142 is formed with a first microstructure 1222, and the second light-emitting surface 144 is formed with a second microstructure 1444. [0011] The first microstructure H22 and the second microstructure 1444 both have a "V" shape, and the width of the first microstructure 1422 is ', the height is , and the top angle is (1, the width of the second microstructure 1444 is %, height is , and the top angle is (2 φ. Among them, W1 (W2, hl(h2, (/(2, and 'less than 5 micron,, (5 micron, twist ((2 (90 degrees, 90) Degree ((丨(18〇度。 [0012] The first microstructures 1422, the second microstructures 1444 are all discontinuously disposed, and the adjacent first microstructures 1422 and the adjacent second microstructures 1444 have spaces, respectively. The tops of the first microstructures 1442 and the second microstructures 1444 are staggered, that is, the tops are not on the same line parallel to the entrance surface 14〇. [0013] Since hi(h2, the first microstructure H22 and the second micro In comparison with the structure 1444, the first microstructure 1222 has a smaller influence on the incident angle of the light incident thereon than the ®, and the second microstructure 1444 has a greater influence on the incident angle of the light incident thereon, and most of the light The first light-emitting surface 142 can provide sufficient light to illuminate through the first light-emitting surface 142, and only a small portion of the light is emitted from the second light-emitting surface 144. The display device (1) includes a main display module 12, a light guide plate 14, a sub-display module 16, and a plurality of light sources 18. [0015] The light source 18 can be an LED (Light Emitting Diode), an ELD (Electroluminescent Diode). The light source 18 has a light emitting surface 180, and the light source 18 is located at the light guide plate 14 into the 094120207. Form No. A0101 Page 5 / Total 12 Page 1003307792 [0017] [0016] [0018] [0020] [0022] 094120207 On August 22, 100, the replacement page light side 140 - side, the light-emitting surface 180 toward the light guide plate 14 into the light The light guide plate 14 is located between the main display module 12 and the sub display module 16, and the first light emitting surface 142 faces the main display module 12 to provide sufficient illumination to illuminate the main display module 12, and the second illuminating surface The 144 is directed toward the sub-display module 16. The light emitted by the light source 18 enters the light guide plate 14 and is continuously transmitted forward, respectively, and is emitted from the first light-emitting surface 142 'the second light-emitting surface 144 to illuminate the main display module 12 and the sub-display. Module 16 » The light guide plate of the example of the present invention may also be wedge-shaped, and the material of the light guide plate may be polycarbonate (PC) A synthetic resin such as poly(mercapto acrylate) (PMMA). The light guide plate and the display device of the embodiment of the invention can be used to form a third microstructure on the light incident surface for improving the uniformity of incident light, and the third microstructure includes The sawtooth prism structure, the tapered structure, etc. The display device of the present invention may further comprise a plurality of reflectors surrounding the light source for improving light utilization, and the reflectors have a circular arc shape. The light guide plate of the present invention has two opposite light emitting surfaces, and the light emitted by the light source enters the light guide plate for transmission and is transmitted from the two light emitting surfaces, and the light that is emitted can illuminate the main display mold and the sub display module by using the light emitting surface. The upper micro-structure controls the energy of the light from the two light-emitting surfaces to provide the light required for the main display module and the sub-display module to realize the display function. The display device of the present invention uses a light guide plate with two light-emitting surfaces, and the main display module and the sub-display module are respectively located on the side of the two light-emitting surfaces, and a dual-screen display function can be realized by using one backlight module, so the display The components required for the device are reduced, resulting in reduced cost and simple manufacturing. Form No. A0101 Page 6 of 12 1003307792-0 1351,557 Correction Replacement Page of August 22, 100 [0023] In summary, the present invention complies with the patent requirements of the invention, and patents are filed according to law. However, the above-mentioned embodiments are merely preferred embodiments of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0024] The first figure is a schematic diagram of a folding mobile phone display screen of the prior art. [0025] The second drawing is a perspective view of the light guide plate of the present invention. The third drawing is an enlarged plan view of a third portion of the second drawing.
[0027] 第四圖係本發明顯示裝置之立體示意圖。 【主要元件符號說明】 [0028] 顯示裝置：10 [0029] 主顯示模組：12 [0030] 導光板：14 [0031] 副顯示模組：16[0027] The fourth figure is a perspective view of the display device of the present invention. [Main component symbol description] [0028] Display device: 10 [0029] Main display module: 12 [0030] Light guide plate: 14 [0031] Sub display module: 16
[0032] 光源：18 [0033] 入光面：140 [0034] 第一出光面：142 [0035] 第二出光面：144 [0036] 發光面：180 [0037] 第一微結構：142 [0038] 第二微結構：1444 094120207 表單編號A0101 第7頁/共12頁 1003307792-0[0032] Light source: 18 [0033] Light-incident surface: 140 [0034] First light-emitting surface: 142 [0035] Second light-emitting surface: 144 [0036] Light-emitting surface: 180 [0037] First microstructure: 142 [0038] ] Second microstructure: 1444 094120207 Form number A0101 Page 7 / Total 12 pages 1003307792-0