200528761 玖、發明說明： 【發明所屬之技術領域】 本發明係關於-種導光板，尤指一種適用於導光板之 網點的排列結構’以提南導光板特定區域之亮产。 【先前技術】 目前液晶面板顯示器已成為市場的主流產品，而液晶 2板顯示器有-個重要的品質要求，就是整個液晶面板的 10 15 亮度要均勻。液晶面板亮度的均勻與否，主要取決於導光 板所提供光線亮度的均勻性。然而，在導光板靠近燈管電 極端的部分，會有所謂#「角落暗帶」產生，嚴重影響整 個導光板的亮度均勻性。 目前消除此種角落暗帶的習知方法共有兩種。請參閱 圖1A ’第-種方法是在導光板u之導光板上表面⑴上 1ΤΙΓ〗，？112’而這些網點112的尺寸大小會隨著其 ⑵板1上的位置而有所變化’如愈靠近角落暗帶 …潤點112的尺寸大小就愈大，使得愈接近角落p 二:導光板11之反射率會愈大，以便補償燈管ml側 力電=132光料足的部份。但是，此種方法其補償的能 有並無法確實提高導光板11之反射率。 除了 mm另―種習知消除角落暗帶的方式是 不—的網點表面151上形成許多尺寸大小 卜，更在導光板15上靠近角落暗帶161 20 200528761 的導光板側面182、與燈管171的電極端172之間置入一 反射膜丨⑻，並且在導光板15上靠近角落暗帶i6i的導 光板側面182上進行表面處理，例如表面霧化、表面鑛膜、 表面刻痕等。此種方法能使由角落暗帶161出射的光線能 5夠被反射㈣181或經表面處理過之部分導光板側面⑻ 反射或散射’以重新進人導光板15内部，增加導光板Μ 之角落暗帶⑹的亮度。但是，這種習知的方法其製造程 序非常複雜，必須進行額外之導光板表面處理程序及額外 準備反射膜片，使得這種習知方法的生產成本大辦，生產 10 時間也會拉長。 【發明内容】 15 本發明之主要目的係在提供一種導光板，俾能提高導 先板特疋區域内之反射率，以增加導光板亮度的均勾性。 2明之另—目的係在提供—種導光板，俾能以較簡 早社構以提高導光板之反射率及增加亮度的均勾性。 為達成上述目的，本發明之導光板係包括—具有一上 :::至少一側向入射面之導光板，且於導光板上表面上 上個第一網點。本發明之特徵在於前述之導光板 执\匕括有至少―特^區域，且導光板上表面除了佈 個:一網點之外，另外於前述之至少_特定區域 内-置有硬數個分佈於第一網點間隙之間的第二網點。 由於本發明之導光板較習知之導光板設置有許多 外」之網點’即複數個第二網點’所以本發明之導光板在 20 200528761 5 10 15 20 特定區域（例如角落暗帶）内的反射率會較習知的導光板 增加許多。此外，本發明之網點（第一網點、及第二網點） 的尺寸大小可依據不同之幾何曲線而變化設計，且網點的 形狀及類型並沒有限制，故本發明之導光板可以依據實際 的需要，將導光板特定區域（例如前述之角落暗帶）内的 反射率加以調整，使得整個導光板的亮度更加均勻。 此外，本發明導光板上的網點（第一網點、及第二網 點）可以網版印刷、電鑄钱刻或化學敍刻的方式形成，而 這些形成方法都較於習知之方法簡易許乡，故本發明之導 光板不但可以較簡單的結構即可達到提高導光板特定區域 内之反射率、並增加導光板亮度的均勻性的目的，並同時 可以筇省沣多生產成本’以及可縮短生產所需時間。 本發明之複數個第一網點及複數個第二網點之尺寸 大小可依據不同之幾何曲線而變化設計，例如線性型變化 曲線、指數型變化曲線、三角函數型變化曲線、及三者中 f少兩者混合而成之混合變化曲線等。本發明之複數個第 一網點及複數個第二網點的類型並無限制，但以凹點及凸 :為較佳。本發明之複數個第一網點及複數個第二網點的 之^限=但以圓形、擴圓形及多邊形為較佳。本發日月 :固苐-網點及複數個第二網點的外型無限制，但以 兩者外型相同的情況為較佳。本發明之 複數個第二網點的形成方式 、、同點及 無制，但以網版印刷方式、 Γ： 無限制，但以冷陰極管為較佳。 且吕 25 200528761 【實施方式】 為能讓貴審查委貝能更瞭解本發明之技術内容，特 舉六較佳具體實施例說明如下。 請參閱圖2，本發明之第一較佳具體實施例係包括一個 5 具有一導光板上表面22及兩側向入射面241，242之導光板 21、及兩支分別對應於兩側向入射面241，242之燈管 271，272，於本實施例中係為冷陰極管，且兩燈管271，272 之二側分別具有一電極端281，282,283,284，其並在導光板 21之導光板上表面22四個角落分別形成一角落暗帶 10 251，252,253,254。 15 此外，在導光板21之導光板上表面22設有複數個圓形 凹點狀之第一網點23，其係以等間距的方式分佈於導光板 上表面22上，且其尺寸大小係依照一線性型變化曲線而由 導光板上表面22之中央朝向四個角落逐漸增加變化。另 外，導光板上表面22除了複數個第一網點23以外，在角落 暗，251，252,253,254内另設有複數個圓形凹點狀之第二網 點26，其係以等間距的方式分佈於角落暗帶25丨，252, Μ、 254内之第-網點23的間隙之間，且其尺寸大小係依照另一 線性型變化曲線而由中央向四個角落逐漸增加變化。 圖3至圖7係為本發明之其他較佳具體實施例（第二至 第六較佳具體實施例）之圖示，由於每一較佳具體實施例 之導光板、燈管（冷陰極f)之相關位置及功能均 ;月:二=㈣實施例相同，因此，圖3至圖7僅顯示： 罪近燈s電極端之角落暗帶附近之部份。 20 200528761 ❼閱®3 ’本發明之第二較佳具體實施例之複數個第 :網點31係以等間距的方式分佈於導光板上表面33，且其 圓升/凹點之尺寸大小係依照—線性型變化曲線由導光板上 表面33之中央朝向四個角落逐漸增加變化。導光板上表面 珊了，數個第-網點3UX外，在线时％之電極仙 的角洛暗帶36内，另外設有複數個圓形凹點狀之第二網 點32，且其係以等間距的方式分佈於角落暗帶％内之第— 網點的間隙之間，同時每_個第^點 相同。 ίο 15 請參閱圖4，本發明$笛-> & 5之第二較佳具體實施例之複數個第 一網點41係以等間距的方式分佈於導光板上表面43，且1 橢圓形凹點之尺寸大」、孫斤 " 係依照一線性型變化曲線由導光板 上表面43之中央朝向四個角落逐漸增加變化。導光板上表 面43除了複數個第一網點41以外，在靠近燈管44之電 45的一角落暗帶46内’另外設有複數個圓形凹點狀之第二 網點42，且其係以等間距的方式分㈣角落” :::丨的間隙之間’同時每一個第二網點42之尺 皆相同。 一請參閱圖5,本發明之第四較佳具體實施例之複數個第 -網點51係以等間距的方式分佈於導光板上表面^，且直 ，、角n點之尺寸大小係m㈣變化曲線由導 上表面53之中央朝向四個角落逐漸增加變化。導 =&了，_第'_51以外’在靠近燈扣之端 55的-角㈣帶洲，另外設有概個六㈣㈣狀之^ 20 200528761 :網:二2，且其係以等間距的方式分佈於角落暗帶56内之 第一網點51的間隙之間，同時 小皆相同。 门夺母-個第二網點52之尺寸大 5 =圖6’本發明之第五較佳具體實施例之複數個第 的方式分佈於導光板上表面63，且其 表面63之中2大小係依照—線性型變化曲線由導光板上 6二=1個角落逐漸增加變化。導光板上表面 6的3 一網點61以外，在靠近燈管料之電極端“ 10 點62且二▼ 6m卜設有難個菱形㈣狀之第二網 點62，且其係以等間距的太 網點61的間隙之間，同時每=洛暗帶66内之第一 相同。 于母個第-網點62之尺寸大小皆 -網::=本Γ之第六較佳具體實施例之複數個第 15 且二角：凹 間距的方式分佈於導光板上表面73, ，、二角形凹點之尺寸大小係依照一線性型變化 ::上表面73之中央朝向四個角落逐漸增 導 1第 内之;，二間::Γ=式分佈於角落暗帶76 寸大小皆終 間’同時母H網點以尺 從以上的實施例中可以得知，本發明 一 光板特定區域内之反射率及增 σ Μ提高導 且其結構較習知消除角落暗帶的方式簡單言=均勻性，而 20 200528761 上述實施例僅係為了方便說明而舉例而已，本發明所 主張之權利範圍自應以申請專利範圍所述為準，而非僅限 於上述實施例。 5【圖式簡單說明】 圖1A係習知消除角落暗帶之導光板示意圖之_。 圖1B係習知消除角落暗帶之導光板示意圖之二。 圖2係本發明第一較佳實施例之導光板示意圖。 圖3係本發明第二較佳實施例之導光板示意圖。 10圖4係本發明第三較佳實施例之導光板示意圖。 圖5係本發明第四較佳實施例之導光板示意圖。 圖6係本發明第五較佳實施例之導光板示意圖。 圖7係本發明第六較佳實施例之導光板示意圖。 【圖號說明】 11 導光板 111 121 角落暗帶 131 15 導光板 151 161 角落暗帶 171 181 反射膜片 182 22 導光板上表面 23 242 側向入射面 251 253 角落暗帶 254 271 燈管 272 導光板上表面 燈管 導光板上表面 燈管 ^光板側面 第一網點 角落暗帶 角落暗帶 燈管 15 112網點 13 2電極端 152網點 172電極端 21導光板 241側向入射面 252角落暗帶 26 第二網點 2 81電極端 200528761 282 電極端 283 電極端 284 電極端 31 第一網點 32 第二網點 33 導光板上表面 34 燈管 35 電極端 36 角落暗帶 41 第一網點 42 第一網點 43 導光板上表面 44 燈管 45 電極端 46 角落暗帶 51 第一網點 52 第二網點 53 導光板上表面 54 燈管 55 電極端 56 角落暗帶 61 第一網點 62 第二網點 63 導光板上表面 64 燈管 65 電極端 66 角落暗帶 71 第一網點 72 第二網點 73 導光板上表面 74 燈管 75 電極端 76 角落暗帶 12200528761 (1) Description of the invention: [Technical field to which the invention belongs] The present invention relates to a light guide plate, and more particularly to an arrangement structure of dots suitable for the light guide plate ', in order to increase the light output of a specific area of the light guide plate. [Previous Technology] At present, LCD panel displays have become the mainstream products in the market, and LCD 2-panel displays have an important quality requirement, that is, the brightness of the entire LCD panel must be uniform. The uniformity of the brightness of the LCD panel mainly depends on the uniformity of the brightness provided by the light guide plate. However, in the part of the light guide plate near the electric extreme of the lamp tube, there will be a so-called # "corner dark band", which seriously affects the brightness uniformity of the entire light guide plate. There are currently two known methods for eliminating such dark corners. Please refer to FIG. 1A. The first method is to place 1ΤΙΓ on the surface of the light guide plate u of the light guide plate u. 112 ', and the size of these dots 112 will change according to the position on the fascia board 1', such as the closer to the corner dark band ... the larger the size of the wet point 112, the closer to the corner p 2: light guide plate The reflectivity of 11 will be larger in order to compensate for the part of the lamp with ml side force = 132 light foot. However, the compensation of this method cannot improve the reflectivity of the light guide plate 11 reliably. In addition to mm, a conventional way to eliminate corner dark bands is to form a large number of sizes on the dot surface 151. The light guide plate 15 is close to the corner dark bands 161 20 200528761 and the lamp tube 171. A reflective film is placed between the electrode terminals 172, and surface treatment is performed on the light guide plate 15 on the light guide plate side 182 near the corner dark band i6i, such as surface fogging, surface mineral film, and surface nicks. This method can make the light emitted from the corner dark band 161 be reflected enough ㈣181 or the side surface of the light guide plate which has been surface-treated ⑻ reflected or scattered to re-enter the light guide plate 15 and increase the corner darkness of the light guide plate M Banded brightness. However, the manufacturing method of this conventional method is very complicated, and additional surface treatment procedures for light guide plates and additional preparation of reflective films must be performed. This makes the conventional method costly and the production time will be lengthened. [Summary of the invention] 15 The main object of the present invention is to provide a light guide plate, which can improve the reflectance in the special area of the guide plate to increase the uniformity of the brightness of the light guide plate. 2The other thing—the purpose is to provide—a kind of light guide plate, which can be structured earlier to increase the reflectance of the light guide plate and increase the uniformity of the brightness. In order to achieve the above object, the light guide plate of the present invention includes a light guide plate having an upper ::: at least one side facing the incident surface, and a first dot on the surface of the light guide plate. The present invention is characterized in that the aforementioned light guide plate has at least a special area, and the surface of the light guide plate, in addition to a dot: a halftone dot, and in the aforementioned at least _ specific area-has several hard distributions. A second halftone dot between the first halftone dot gaps. Since the light guide plate of the present invention is provided with many “outlets”, ie, a plurality of second dots, than the conventional light guide plate, the reflection of the light guide plate of the present invention in a specific area (such as a dark corner band) at 20 200528761 5 10 15 20 The rate will increase a lot compared with the conventional light guide plate. In addition, the size of the dots (the first dot and the second dot) of the present invention can be designed according to different geometric curves, and the shape and type of the dots are not limited. Therefore, the light guide plate of the present invention can be based on actual needs. , Adjust the reflectance in a specific area of the light guide plate (such as the aforementioned dark corner band), so that the brightness of the entire light guide plate is more uniform. In addition, the dots (the first dot and the second dot) on the light guide plate of the present invention can be formed by screen printing, electroforming, or chemical engraving. These forming methods are simpler and more convenient than conventional methods. Therefore, the light guide plate of the present invention can not only achieve a simpler structure to increase the reflectance in a specific area of the light guide plate, but also increase the uniformity of the brightness of the light guide plate, and at the same time can save multiple production costs and shorten production Required time. The sizes of the plurality of first dots and the plurality of second dots in the present invention can be designed according to different geometric curves, such as a linear change curve, an exponential change curve, a trigonometric function change curve, and f less among the three. Mixing curve and so on. The types of the plurality of first dots and the plurality of second dots in the present invention are not limited, but concave points and convex points are preferred. The limit of the plurality of first dots and the plurality of second dots in the present invention = but circular, expanded circles and polygons are preferred. This issue of the sun and the moon: the appearance of the solid-network outlets and the plurality of second outlets is not limited, but it is better if they have the same appearance. The method for forming the plurality of second screen dots in the present invention, the same point and no system, but the screen printing method, Γ: unlimited, but a cold cathode tube is preferred. And Lu 25 200528761 [Embodiment] In order to allow your review committee to better understand the technical content of the present invention, six preferred specific embodiments are described below. Please refer to FIG. 2. The first preferred embodiment of the present invention includes a light guide plate 5 having an upper surface 22 of a light guide plate and two side incident surfaces 241, 242, and two light guide plates corresponding to two side incidents, respectively. The lamp tubes 271 and 272 on the surfaces 241 and 242 are cold cathode tubes in this embodiment, and the two sides of the two lamp tubes 271 and 272 respectively have an electrode terminal 281, 282, 283, 284, and are connected to the light guide plate of the light guide plate 21. The four corners of the upper surface 22 form a corner dark band 10 251, 252, 253, 254, respectively. 15 In addition, the upper surface 22 of the light guide plate 21 is provided with a plurality of circular concave dot-shaped first dots 23, which are distributed on the surface 22 of the light guide plate at an equal interval, and the size is in accordance with A linear change curve gradually increases from the center of the surface 22 of the light guide plate toward the four corners. In addition, in addition to the plurality of first dots 23, the surface 22 of the light guide plate is dark in the corners, and a plurality of second round dots 26 are arranged in the corners in 251, 252, 253, 254, which are distributed at the corners at an equal interval. Between the gaps of the first half-tone dots 23 in the dark bands 25, 252, Μ, and 254, the size gradually increases from the center to the four corners according to another linear change curve. Figures 3 to 7 are diagrams of other preferred embodiments (second to sixth preferred embodiments) of the present invention. As each preferred embodiment has a light guide plate, a lamp tube (cold cathode f The relevant positions and functions of) are: Month: Two = ㈣ The embodiment is the same, so Figures 3 to 7 only show: The part near the dark band at the corner of the electrode end of the sin near lamp. 20 200528761 ❼View® 3 'The second preferred embodiment of the present invention is a plurality of dots: the dots 31 are distributed on the surface 33 of the light guide plate at an equal interval, and the size of the circular rise / concavity is in accordance with -The linear change curve gradually increases from the center of the surface 33 of the light guide plate toward the four corners. The surface of the light guide plate is damaged. Outside of the first-halftone dots 3UX, there are a number of second halftone dots 32 in the shape of a circular recessed dot inside the dark corner strip 36 of the electrode fairy when online. The method of spacing is distributed between the gaps of the first-halftone dots within the corner dark band%, and at the same time every ^ th dot is the same. ίο 15 Please refer to FIG. 4, the plurality of first dots 41 of the second preferred embodiment of the present invention $ 5 are distributed on the surface 43 of the light guide plate at an equal interval, and 1 is oval "The size of the pit is large," according to a linear change curve, which gradually changes from the center of the upper surface 43 of the light guide plate toward the four corners. In addition to the plurality of first dots 41 on the surface of the light guide plate, a plurality of second dots 42 in the shape of a circular recess are provided in a dark band 46 in a corner near the electric tube 45 of the lamp 44. Dividing the corners in an equally spaced manner "::: Between the gaps, at the same time, the size of each second dot 42 is the same. Please refer to FIG. 5, the fourth preferred embodiment of the present invention is a plurality of- The dots 51 are distributed on the surface of the light guide plate at equal intervals ^, and the size of the straight and angular n points is changed from the center of the upper surface 53 toward the four corners. , _ 第 '51' other than 'at the corner of the corner near the lamp buckle-Jiaojiao belt continent, in addition, there are roughly six ㈣㈣-shaped ^ 20 200528761: net: two 2, and it is distributed in the corners at an equal interval The gaps between the first dots 51 in the dark band 56 are the same at the same time. The size of the gate dots-the second dots 52 is larger. 5 = Figure 6 'A plurality of fifth preferred embodiments of the present invention. Is distributed on the surface 63 of the light guide plate, and the two sizes of the surface 63 follow the linear change curve. Gradually increase the change from 62 = 1 corners on the light guide plate. In addition to the 3 dots 61 on the surface 6 of the light guide plate, near the electrode end of the lamp tube "10 point 62 and two ▼ 6m, there are difficult diamond-shaped ridges. The second dots 62 are between the gaps of the ether dots 61 at equal intervals, and the first dots in the dark band 66 are the same. The size of the first-halftone dots 62 in the mother are all-halftones: == this sixth preferred embodiment of the Γ is a plurality of 15th and two corners: the concave pitch is distributed on the surface of the light guide plate 73, ,, two The size of the angular dimples changes according to a linear type :: the center of the upper surface 73 gradually increases to the first four corners toward the four corners; the second: :: Γ = is distributed in the corner dark bands 76 inches in size are all final 'At the same time, the mother H network dots can be learned from the above embodiments. The reflectance and the increase of σ in a specific area of a light plate of the present invention are improved, and its structure is simpler than the conventional way to eliminate corner dark bands = uniformity. However, the above-mentioned embodiments are merely examples for the convenience of description. The scope of the claims of the present invention should be based on the scope of the patent application, rather than being limited to the above-mentioned embodiments. 5 [Schematic description] Figure 1A is a schematic diagram of a conventional light guide plate for eliminating corner dark bands. FIG. 1B is the second schematic diagram of a conventional light guide plate for eliminating corner dark bands. FIG. 2 is a schematic diagram of a light guide plate according to a first preferred embodiment of the present invention. FIG. 3 is a schematic diagram of a light guide plate according to a second preferred embodiment of the present invention. 10 is a schematic view of a light guide plate according to a third preferred embodiment of the present invention. FIG. 5 is a schematic diagram of a light guide plate according to a fourth preferred embodiment of the present invention. FIG. 6 is a schematic diagram of a light guide plate according to a fifth preferred embodiment of the present invention. FIG. 7 is a schematic diagram of a light guide plate according to a sixth preferred embodiment of the present invention. [Illustration of figure number] 11 Light guide plate 111 121 Corner dark strip 131 15 Light guide plate 151 161 Corner dark strip 171 181 Reflective film 182 22 Surface of the light guide plate 23 242 Side incident surface 251 253 Corner dark strip 254 271 Light tube 272 Guide Surface light tube on the light plate Surface light tube on the light guide plate ^ The dark spot on the side of the first dot on the side of the light plate. The second half point 2 81 electrode end 200528761 282 electrode end 283 electrode end 284 electrode end 31 first half point 32 second half point 33 surface of the light guide plate 34 lamp tube 35 electrode end 36 dark corner 41 first half point 42 first half point 43 Upper surface of light plate 44 Light tube 45 Electrode end 46 Corner dark strip 51 First half point 52 Second half point 53 Light guide plate surface 54 Light tube 55 Electrode end 56 Corner dark band 61 First half point 62 Second half point 63 Upper surface of light guide plate 64 Lamp tube 65 Electrode end 66 Corner dark band 71 First dot 72 Second dot 73 Surface of light guide plate 74 Lamp tube 75 Electrode end 76 Corner dark strip 12