M350727 八、新型說明： 【新型所屬之技術領域】 本創作係有關於一種應用於背光模組之導光板結構，尤指一種貼附有 遮光層之「導光板之結構改良」’其利用遮光層形成之透光口，使光線集中 由透光口處向外擴散投射，使其增加光輝度，又該遮光層乃直接於導光板 上形成，不僅可減少導光板與遮光層之厚度，亦可減少組裝之步驟及降低 材料之成本。 Φ 【先前技術】 按’導光板係為背光模組之其一主要元件’又該背光模組(Back light module)乃常見應用於液晶顯示器（LCD)或具有透光效果之鍵盤處，其中液 晶顯示器（LCD)係需要背光模組提供所需之顯示光源，而背光模組係至少 包含有光源、導光板、擴散膜、菱鏡片及反射板等，又可視情況增加有遮 光板，其主要為點光源或線光源之光源轉換為面光源，其目的在於提供— 中心輝度較高且均勻的面光源，以作為液晶顯示器之顯示光源，而該背光 •模組之光輝度與亮度均勻效果，主要由導光板之散射與折射效能而定，一 般而言，導光板愈厚其能造成的散射效果愈好，並可設置更多數量之擴散 點（光學網點）’使光線折射率提高，藉此係能增加整體的亮度均勻性，而 多次的散射亦會導致光能的耗損，並會降低光源的利用效率，又會產生令 人困惱的廢熱，而為了達到所需之亮度，而增加光源之強度，即帶來更多 之廢熱，不僅提高了製造成本，亦降低了光源的壽命。 又當導光板應用於具透光效果之鍵盤時，請由第8圖所示，習知之— 種具透光效果之鍵盤結構，其鍵盤結構(50)中包含有：外殼(51)、電路板 M350727 (52)、觸動板(53)、導光板(54)、遮光板(55)、鍵盤(56)及鍵盤蓋(57)， 該導光板(54)與遮光板(55)係裝設於觸動板(53)與鍵盤(56)之間，即依序 由電路板(52)、觸動板(53)、導光板(54)、遮光板(55)及鍵盤(56)裝置入 外殼(51)中’並於導光板(54)之板體侧面設置有發光源（圖未標示），再以 鍵盤蓋（57)蓋於鍵盤(56)之上方，當發光源之光線由導光板(54)之侧面射 出時，其光線係穿透導光板(54)之内部，藉由散射與折射之光線於遮光板 (55)所形成之透光口（551)射出，藉此控制光線只能由鍵盤(56)之部份透 鲁出’而遮光板(55)乃具有折射之效果。 詳觀上述習知結構不難發覺其尚存有些許不足之處，其導光板(54)之 上係裝置有一遮光板(55)，並於導光板(54)與遮光板(55)之間形成有透光 口（551)，使光線集中由透光口（551)處向外擴散投射，由於導光板(54)與 遮光板(55)係為分開製造，其導光板(54)與遮光板(55)皆需具有一定之厚 度’不僅增加導光板(54)與遮光板(55)之厚度，亦增加了組裝之步驟及材 料之成本。 _ 核於此’創作人本料年從事糊產品之製造開發與設計經驗，針 對上述之目標，詳加設計與審慎評估後，終得一確具實用性之本創作。 【新型内容】 欲解決之技術問題點： 習知之-種具有透光效果之鍵盤中，其導光板與遮光板之間形成有透 光口 ’使光線集中由透光口處向外擴散投射，由於導光板與遮光板係為分 開製造’其導光板與遮光板㈣具有-定之厚度，不僅增加導光板與遮光 板之厚度，亦增加了組裝之步驟及材料之成本。 M350727 解決問題之技術特點： 一種導光板之結構改良，其包括有：一導光板及一遮光層所構成，一 導光板係具有一上表面及一下表面，下表面係形成有複數個内凹之擴散 點’一遮光層係為一不透光之材質所構成，並直接貼附於導光板之上表面， 又該未貼附遮光層之上表面乃形成透光口，導光板結構係為背光模組中之 其一元件，本創作係可使用於面板或具透光之鍵盤處，其具透光效果之鍵 盤結構，係包含有外殼、電路板、觸動板、鍵盤及鍵盤蓋，該導光板係裝 馨設於觸動板與鍵盤之間’即依序由電路板、觸動板、導光板及鍵盤裝置入 外殼中’並於導光板之板體側面設置有發光源，再以鍵盤蓋蓋於鍵盤之上 方’而導光板之擴散點於愈靠近發光源處之密度數量愈少，並向外擴展增 加其擴散點，當發光源之光線由導光板之侧面射出時，其光線係穿透導光 板之内部，其向下投射之光線係由導光板下表面之擴散點形成依法線角度 之折射，而少數未進行折射之光線乃由下表面處之反射層形成反射，該反 射與折射之光線一部分直接於遮光層所形成之透光***出，另一部分之光 鲁線乃投射於遮光層處，藉此控制光線只能由鍵盤之部份透出，而遮光層乃 具有折射之效果，又配合擴散點之數量分佈。 對照先前技術之功效： (一） 、其導光板之上表面係貼附有遮光層，並於導光板與遮光層之間 形成有透光口，使光線集中由透光口處向外擴散投射，又該遮光層乃直接 於導光板上形成，不僅可減少導光板與遮光層之厚度，亦可減少組裝之步 驟及降低材料之成本。 (二） 、其導光板之上表面係貼附有遮光層，並於下表面凹設有複數個 7 M350727 擴散點’使光線於導光板之上表面及下表面之間進行折射，並將光線集中 於透光口處，俾以提高發光源透入導光板之光輝度，並有效控制亮度均勻 者。 【實施方式】 為使貴審查委員對本創作之目的、特徵及功效能夠有更進一步之瞭解與 認識，以下茲請配合【圖式簡單說明】詳述如后： 先請由第1圖與第2圖所示觀之’一種導光板之結構改良，其包括有： 籲一導光板(10)及一遮光層（20)所構成，一導光板(1〇)係具有一上表面（u) 及一下表面（12)，該上表面（Π)係為一光滑面，且下表面（12)係形成有複 數個内凹之擴散點（13)，該擴散點（13)係呈半圓形之凹槽，亦為倒v形之 凹槽，而該導光板（10)乃為一種高反射率且不吸光之塑膠材料，其主要由 聚曱基丙烯酸曱醋(PMMA)或聚碳酸酯(PC)所構成，一遮光層（2〇)係為一不 透光之材質所構成，並直接貼附於導光板（1〇)之上表面（11)，又該未貼附 遮光層（20)之上表面（11)乃形成透光口（14)，且遮光層（2〇)係為一種喷漆 鲁方法所形成之結構，另於導光板(1〇)之上表面（1丨）與遮光層（2〇)之間係形 成有一反射層（21) ’該反射層（21)係與遮光層（20)形成相同表面形狀，又 該導光板（10)之下表面（12)亦形成有一反射層（22)，且反射層（22)之下端 設有抗乳化之保護層，而反射層（21)(22)係由熱轉印、電鍍或喷漆所形成。 再請由第3圖所示，其乃為本創作之另一實施例，導光板(1〇)係同樣 於上表面（11)貼附有一遮光層（20)，而遮光層（2〇)與上表面（11)之間係形 成有複數個透光口（14)，而該透光口（14)為貫穿導光板（1〇)之槽孔（15)， 使導光板（10)之表面形狀與遮光層（20)相同，該導光板（1〇)之槽孔（15)係 8 M350727 略小於透光口（14)之表面大小。 其實際應用之情況，導光板結構係為背光模組中之其一元件，本創作 係可使用於面板或具透光之鍵盤處，在此以使用於鍵盤之情況為例，並不 局限本創作之使用範《#，復請由第4至7圖所示觀之，其具透光效果之鍵 盤結構(30)，係包含有外殼(31)、電路板(32)、觸動板(33)、鍵盤(34)及 鍵盤蓋(35)，該導光板(1〇)係裝設於觸動板(33)與鍵盤(34)之間，即依序 由電路板(32)、觸動板(33)、導光板(1〇)及鍵盤(34)裝置入外殼(31)中， 馨並於導光板（10)之板體側面設置有發光源(4〇)，再以鍵盤蓋(35)蓋於鍵盤 (34)之上方，其中發光源(4〇)係為冷陰極燭光燈、發光二極體(LED)及電激 發光片（EL)所形成，而導光板（1〇)之擴散點（13)於愈靠近發光源(4〇)處之 密度數量愈少，並向外擴展增加其擴散點（13)，當發光源(4〇)之光線由導 光板(10)之側面射出時，其光線係穿透導光板(1〇)之内部，其向下投射之 光線係由導光板(1〇)下表面（12)之擴散點（13)形成依法線角度之折射，而 少數未進行折射之光線乃由下表面（12)處之反射層（22)形成反射，即可增 籲加其光使用率’該反射與折射之光線一部分直接於遮光層⑽所形成之透 光口（14)射出，另一部分之光線乃投射於遮光層（2〇)處，藉此控制光線只 能由鍵盤⑽之部份透出，而遮光層（20)乃具有折射之效果，又合擴散 點（13)之數量分佈，俾以達到亮度均勻之功效，然而導光板(1〇)與遮光層 (2〇)之間係形成一反射層（21)用以增加其遮光層（20)處之反射效果，該具 有槽孔（15)之導光板（ι〇)(如第3圖所示），於使用時其光線係由槽孔（π) 之壁緣處透出，即可達到相同之聚光效果者。 藉上述具體實施例之結構，可得到下述之效益：（一）其導光板（10)之 M350727 上表面（11)係貼附有遮光層（20)，並於導光板(10)與遮光層（20)之間形成 有透光口（14)，使光線集中由透光口（14)處向外擴散投射，又該遮光層（20) 乃直接於導光板（10)上形成，不僅可減少導光板(10)與遮光層（2〇)之厚 度’亦可減少組裝之步驟及降低材料之成本；（二）其導光板〇〇)之上表面 (11)係貼附有遮光層（20)，並於下表面（12)凹設有複數個擴散點（13)，使 光線於導光板(10)之上表面（Π)及下表面（12)之間進行折射，並將光線集 中於透光口（14)處，俾以提高發光源(4〇)透入導光板(1〇)之光輝度，並有 鲁效控制亮度均句者。 綜上所述，本創作確實已達突破性之結構設計，而具有改良之創作内 容，同時又能夠達到產業上之利用性與進步性，且本創料見於任何刊物， 亦具新穎& §符合專槪相關法條之規定，爰依法提崎型專利申請， 懇請釣局審查委員授予合法專利權，至為感禱。 ’當不能以之限定本 之均等變化與修飾， 唯以上所述者，僅為摘狀-難實施例而已 創作實施之範圍,·即大凡依本創作申請專利範圍所作 #皆應仍属本創作專利涵蓋之範圍内。 M350727 【圖式簡單說明】 第1圖：係本創作之立體圖。 第2圖：係本創作之侧面刳視圖。 第3圖：係本創作之另一實施例之侧面剖視圖。 第4圖：係本創作之應用於鍵盤之立體分解圖。 第5圖：係本創作之應用於鍵盤之立體圖。 ' 第6圖：係本創作之應用於鍵盤之侧面剖視圖。 ϋ第7圖：係本創作之應用於鍵盤之剖視作動圖。 第8圖：係習知之具透光效果之鍵盤結構之分解圖。 【主要元件符號說明】 本創作部份： 導光板----（10) 上表Φ--- -(11) 下表面----（12) 擴散點--- -(13) 透光口----（14) 槽孔---- -(15) 遮光層----（20) 反射I--- -(21)(22) 鍵盤結構---（30) 外殼---- -(31) 電路板----（32) 觸動板--- -(33) 鍵盤-----（34) 鍵盤蓋--- -(35) 發光源----（40) 習知部份： 11 M350727 鍵盤結構---（50) 外殼-----（51) 電路板----（52) 觸動板----（53) 導光板 （54) 遮光板----（55) 透光口----（551) 鍵盤-----（56) 鍵盤蓋----（57)M350727 VIII. New Description: [New Technology Field] This creation is about a light guide plate structure applied to a backlight module, especially a "structure improvement of a light guide plate" with a light shielding layer. The light-transmissive port is formed so that the light is concentrated and diffused outwardly from the light-transmitting opening to increase the brightness, and the light-shielding layer is formed directly on the light guide plate, thereby not only reducing the thickness of the light guide plate and the light-shielding layer, but also Reduce assembly steps and reduce material costs. Φ [Prior Art] According to the 'light guide plate as one of the main components of the backlight module', the backlight module is commonly used in liquid crystal displays (LCD) or keyboards with light-transmitting effects, among which liquid crystal The display (LCD) system needs a backlight module to provide a required display light source, and the backlight module includes at least a light source, a light guide plate, a diffusion film, a diamond lens, a reflection plate, etc., and a light shield plate may be added as the case may be The light source of the point source or the line source is converted into a surface light source, and the purpose thereof is to provide a surface light source with high center luminance and uniformity as a display light source of the liquid crystal display, and the brightness and brightness of the backlight module are uniform, mainly Depending on the scattering and refractive properties of the light guide plate, in general, the thicker the light guide plate, the better the scattering effect can be, and a larger number of diffusion points (optical dots) can be set to increase the refractive index of the light. It can increase the overall brightness uniformity, and multiple scattering will also lead to the loss of light energy, and will reduce the utilization efficiency of the light source, and will generate annoying waste heat. In order to achieve the desired brightness, increasing the intensity of the light source, that is, bringing more waste heat, not only increases the manufacturing cost, but also reduces the life of the light source. When the light guide plate is applied to a keyboard with a light-transmitting effect, as shown in FIG. 8 , a keyboard structure having a light-transmitting effect is known, and the keyboard structure (50) includes: a casing (51) and a circuit. Board M350727 (52), touch panel (53), light guide plate (54), visor (55), keyboard (56) and keyboard cover (57), the light guide plate (54) and the visor (55) are installed Between the touch panel (53) and the keyboard (56), the circuit board (52), the touch panel (53), the light guide plate (54), the light shielding plate (55) and the keyboard (56) are sequentially inserted into the outer casing ( 51) The light source (not shown) is disposed on the side of the plate body of the light guide plate (54), and is covered by the keyboard cover (57) with the keyboard cover (57). When the light source of the light source is used by the light guide plate ( When the side of the 54) is emitted, the light passes through the inside of the light guide plate (54), and the light is scattered by the light and the refracting light (551) formed by the light shielding plate (55), thereby controlling the light. The portion of the keyboard (56) is transparent and the visor (55) has the effect of refracting. It is not difficult to find out that the above-mentioned conventional structure has some shortcomings. The light guide plate (54) has a visor (55) on the light guide plate (54) and between the light guide plate (54) and the visor (55). A light-transmissive opening (551) is formed, so that the light is concentrated and diffused outwardly from the light-transmitting opening (551). Since the light-guiding plate (54) and the light-shielding plate (55) are separately manufactured, the light-guiding plate (54) and the light-shielding plate are shielded from each other. The plate (55) needs to have a certain thickness 'not only increases the thickness of the light guide plate (54) and the light shielding plate (55), but also increases the cost of assembly steps and materials. _ The author of this creator is engaged in the manufacturing development and design experience of paste products for the purpose of the above-mentioned objectives. [New content] The technical problem to be solved: In the keyboard with light transmissive effect, a light-transmissive port is formed between the light guide plate and the light-shield plate to make the light concentrate and spread outward from the light-transmitting port. Since the light guide plate and the light shielding plate are separately manufactured, the light guide plate and the light shielding plate (four) have a certain thickness, which not only increases the thickness of the light guide plate and the light shielding plate, but also increases the assembly steps and the cost of the material. M350727 Technical Problem of Solving the Problem: A structural improvement of the light guide plate comprises: a light guide plate and a light shielding layer; the light guide plate has an upper surface and a lower surface, and the lower surface is formed with a plurality of concave portions. The diffusion point 'a light-shielding layer is made of a material that is opaque, and is directly attached to the upper surface of the light guide plate, and the upper surface of the unshielded light-shielding layer forms a light-transmissive port, and the light guide plate structure is a backlight. One of the components in the module, the creation system can be used for a panel or a keyboard with light transmission, and the keyboard structure with light transmissive effect includes a casing, a circuit board, a touch panel, a keyboard and a keyboard cover, and the guide The light board is arranged between the touch panel and the keyboard, that is, the circuit board, the touch panel, the light guide plate and the keyboard device are sequentially inserted into the outer casing, and the light source is disposed on the side of the plate body of the light guide plate, and then the cover is covered by the keyboard. Above the keyboard, the diffusion point of the light guide plate is closer to the light source, and the density is less, and expands outward to increase its diffusion point. When the light of the light source is emitted from the side of the light guide plate, the light penetrates. Inside the light panel, the light projected downward is formed by the diffusion point of the lower surface of the light guide plate to form a refraction of a normal line angle, and a small amount of unrefractive light is reflected by the reflective layer at the lower surface, and the reflected and refracted light One part is directly emitted from the light-transmitting port formed by the light-shielding layer, and the other part of the light-ruling line is projected on the light-shielding layer, thereby controlling the light to be transmitted only through the part of the keyboard, and the light-shielding layer has the effect of refraction, and Match the number distribution of diffusion points. Compared with the effects of the prior art: (1) The light-shielding layer is attached to the upper surface of the light guide plate, and a light-transmitting port is formed between the light guide plate and the light-shielding layer, so that the light is concentrated and diffused from the light-transmitting port. Moreover, the light shielding layer is formed directly on the light guide plate, which not only reduces the thickness of the light guide plate and the light shielding layer, but also reduces the assembly steps and reduces the cost of the material. (2) The light-shielding layer is attached to the upper surface of the light guide plate, and a plurality of 7 M350727 diffusion points are recessed on the lower surface to refract light between the upper surface and the lower surface of the light guide plate, and the light is condensed Focus on the light-transmitting port, to improve the brightness of the light-emitting source into the light guide plate, and effectively control the brightness uniformity. [Embodiment] In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of this creation, please refer to the following [Simplified description of the drawings] as follows: First, please refer to Figure 1 and 2 The figure shows a structural improvement of a light guide plate, which comprises: a light guide plate (10) and a light shielding layer (20), and a light guide plate (1) has an upper surface (u) and The lower surface (12), the upper surface (Π) is a smooth surface, and the lower surface (12) is formed with a plurality of concave diffusion points (13), the diffusion point (13) is semi-circular The groove is also an inverted v-shaped groove, and the light guide plate (10) is a high-reflectance and non-light-absorbing plastic material mainly composed of polyacrylic acid vinegar (PMMA) or polycarbonate (PC). The light shielding layer (2〇) is made of a material that is opaque, and is directly attached to the upper surface (11) of the light guide plate (1), and the light shielding layer (20) is not attached. The upper surface (11) forms a light-transmissive opening (14), and the light-shielding layer (2〇) is a structure formed by a spray coating method, and is also used for a light guide plate (1〇). A reflective layer (21) is formed between the upper surface (1丨) and the light shielding layer (2〇). The reflective layer (21) forms the same surface shape as the light shielding layer (20), and the light guide plate (10) The lower surface (12) is also formed with a reflective layer (22), and the lower end of the reflective layer (22) is provided with an anti-emulsification protective layer, and the reflective layer (21) (22) is formed by thermal transfer, electroplating or painting. . Please refer to FIG. 3, which is another embodiment of the present invention. The light guide plate (1〇) is also attached with a light shielding layer (20) on the upper surface (11), and the light shielding layer (2〇). A plurality of light-transmissive ports (14) are formed between the upper surface (11), and the light-transmissive ports (14) are slots (15) penetrating through the light guide plate (1), so that the light guide plate (10) The surface shape is the same as that of the light shielding layer (20), and the slot (15) of the light guide plate (1) is slightly smaller than the surface size of the light transmission opening (14). In the actual application, the light guide plate structure is one of the components in the backlight module. The present invention can be used for a panel or a keyboard with light transmission. Here, the case of using the keyboard is taken as an example, and the present invention is not limited thereto. The use of the creation of the model "#, please see the picture shown in Figures 4 to 7, its keyboard structure (30) with light transmission effect, including the outer casing (31), circuit board (32), touch panel (33) ), a keyboard (34) and a keyboard cover (35), the light guide plate (1〇) is installed between the touch panel (33) and the keyboard (34), that is, sequentially by the circuit board (32), the touch panel ( 33), the light guide plate (1〇) and the keyboard (34) are installed in the outer casing (31), and the light source (4〇) is disposed on the side of the plate body of the light guide plate (10), and then the keyboard cover (35) Covered above the keyboard (34), wherein the light source (4〇) is formed by a cold cathode candle, a light emitting diode (LED) and an electroluminescent sheet (EL), and the diffusion of the light guide plate (1〇) The point (13) is less denser than the light source (4〇), and expands outward to increase its diffusion point (13). When the light source (4〇) is emitted from the side of the light guide plate (10) When the light is transmitted through the light guide plate (1〇 Inside, the downwardly projected light is reflected by the diffusion point (13) of the lower surface (12) of the light guide plate (1) to form a normal line angle, and a small amount of unrefracted light is from the lower surface (12) The reflective layer (22) forms a reflection, which can increase the light utilization rate. The light of the reflection and refraction is directly emitted from the light-transmissive opening (14) formed by the light-shielding layer (10), and the other part of the light is projected on the light-emitting layer (14). The light shielding layer (2〇), thereby controlling the light to be transmitted only by the keyboard (10), and the light shielding layer (20) has the effect of refraction, and the distribution of the diffusion points (13), to achieve the brightness Uniform effect, however, a reflective layer (21) is formed between the light guide plate (1〇) and the light shielding layer (2〇) for increasing the reflection effect at the light shielding layer (20), which has the slot (15) The light guide plate (as shown in Fig. 3), when used, its light is transmitted through the wall edge of the slot (π) to achieve the same concentrating effect. According to the structure of the above specific embodiment, the following benefits can be obtained: (1) The upper surface (11) of the M350727 of the light guide plate (10) is attached with a light shielding layer (20), and is shielded from the light guide plate (10). A light-transmissive opening (14) is formed between the layers (20), so that the light is concentrated and diffused outwardly from the light-transmitting opening (14), and the light-shielding layer (20) is formed directly on the light guide plate (10), not only The thickness of the light guide plate (10) and the light shielding layer (2〇) can be reduced, the assembly step can be reduced, and the cost of the material can be reduced. (2) The upper surface (11) of the light guide plate (11) is attached with a light shielding layer. (20), and a plurality of diffusion points (13) are recessed on the lower surface (12) to refract light between the upper surface (Π) and the lower surface (12) of the light guide plate (10), and illuminate the light Focus on the light-transmissive port (14), to increase the brightness of the light-emitting source (4〇) into the light guide plate (1〇), and to control the brightness of the sentence. In summary, this creation has indeed achieved a breakthrough structural design, with improved creative content, while at the same time achieving industrial use and progress, and this innovation is found in any publication, also novel & § In accordance with the provisions of the relevant laws and regulations, 提 提 型 型 型 专利 提 提 提 提 提 提 提 提 提 提 提 提 提 提 提 提 提 提 提 提 提 提 提'When it is not possible to limit the equal changes and modifications of this book, only the above-mentioned ones are only the scope of the excerpt-difficult examples, and the scope of the patent application is still in this creation. Within the scope of the patent. M350727 [Simple description of the diagram] Figure 1: A perspective view of the creation. Figure 2: This is the side view of the creation. Figure 3 is a side cross-sectional view of another embodiment of the present invention. Figure 4: This is an exploded view of the keyboard used in this creation. Figure 5: This is a perspective view of the keyboard applied to the keyboard. 'Figure 6: This is a side view of the creation of the keyboard applied to the keyboard. ϋ Figure 7: This is the cross-sectional view of the keyboard used in this creation. Fig. 8 is an exploded view of a keyboard structure with a light transmissive effect. [Main component symbol description] This part of the creation: Light guide plate ---- (10) The above table Φ--- - (11) Lower surface ---- (12) Diffusion point ----- (13) Light transmission Mouth----(14) Slot-----(15) Light-shielding layer----(20) Reflection I----(21)(22) Keyboard structure---(30) Enclosure-- ---(31) Circuit Board----(32) Touch Panel----(33) Keyboard-----(34) Keyboard Cover----(35) Light Source----(40 ) Conventional part: 11 M350727 Keyboard structure---(50) Enclosure-----(51) Circuit board----(52) Touch panel----(53) Light guide plate (54) ----(55) Light Port----(551) Keyboard-----(56) Keyboard Cover----(57)
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