M368099 五、新型說明： 【新型所屬之技術領域】 本創作涉及-種應用於背光模組的導光板改良結構。 【先前技術】 料模_顧十分普遍，舉鱗記型電腦、顯科、手機、 液晶電視、…等顯示器本身不會發光的電子設傷都需要背光模組 ^ 來提供光源。 —一般的背光模組包含有導光板與光源，對於機體厚度要求較 薄的電子產扣而s ’通^疋制LED做為光源，並將該光源設於 導光板侧邊的入光面，導光板的第一側面則設置—反射片，相對 的第二側面做為出光面並設置由擴散片與增以等所組成的複數 光學膜片。光源所發出的光線由人光面投射進人導光板内傳遞， 部分光線由反射狀射，再依序從出光面通過擴散片與增光片射 •出。 . _不太大的導光板’通常僅在其—㈣形成人光面並安裝 光源，且基於LED所發射的光線具有良好指向性的原因，一般都 在導光板的人光面設·數麵源，麟等辆、將规射入導光 板丄讓導光板的出光面呈現出較均勻的亮度。惟，光源愈多，代 表著材料成本愈高’且維修替換時所耗_人力與工時也較多。 “此外，對於面鋪大-點的導光減言，若光賴安裝在導 光板一端’職機人導光板後的光線在傳_另—端時亮度會 3 M368099 =減，梅繼__亮度蝴況。為了改 善此問㈣於僅在矩形導光板單邊設置光源的背光模組，習知 的嫩案，是蝴嶋__另—峨斜面，亦即 使¥光板形成為楔形狀，其厚度的變化权細的-端往相對另 -端呈由大逐漸變小’企圖使出光面卿度維持均勾。 台灣公開號2__專，係揭露_種_高照明度、M368099 V. New Description: [New Technology Field] This creation involves an improved structure of a light guide plate applied to a backlight module. [Prior Art] The material model _ is very common, and the electronic device that does not emit light, such as the scale computer, the display computer, the mobile phone, the LCD TV, etc., requires a backlight module to provide a light source. - A general backlight module includes a light guide plate and a light source, and an electronic production button having a thinner thickness for the body is used as a light source, and the light source is disposed on a light incident surface of a side of the light guide plate. The first side of the light guide plate is provided with a reflection sheet, and the opposite second side is used as a light-emitting surface and a plurality of optical films composed of a diffusion sheet and a lifter are provided. The light emitted by the light source is transmitted from the human light surface into the human light guide plate, and part of the light is reflected by the reflection, and then sequentially emitted from the light exit surface through the diffusion sheet and the brightness enhancement sheet. _Not too large light guide plate 'usually only - (4) forming a human light surface and installing a light source, and based on the reason that the light emitted by the LED has good directivity, generally in the light surface of the light guide plate Source, Lin, etc., will be injected into the light guide plate, so that the light-emitting surface of the light guide plate exhibits a relatively uniform brightness. However, the more light sources, the higher the cost of materials, and the more manpower and man-hours spent on repairs and replacements. "In addition, for the large-point light guide of the surface pavement, if the light is installed at the end of the light guide plate, the light after the light guide plate is transmitted at the same time, the brightness will be 3 M368099 = minus, Mei Ji __ In order to improve this problem, (4) in a backlight module in which a light source is provided only on one side of a rectangular light guide plate, the conventional tender case is a butterfly __ another-beveled face, and even if the light plate is formed into a wedge shape, The thickness of the change is fine - the end is gradually smaller from the other end - attempting to keep the illuminating surface clear. The Taiwan public number 2__Special, revealing _ kind _ high illumination,
度 南效能與辦度的單點絲結合於導敍，_減少絲的數量 而企圖降低成本；，淮’其缺點在於，無論從哪個角度進行入光照 射’都會因為光源的效能太強而難以控制背光模組出光面的均勻 台灣公告號M321113專利案所揭露的利用單點光源的導光 板，主要舰則是在導歧佈設魏離結構，單—光源則從導 光板-側射人導紐，其效果實f上與以往的習知技術並益太大 差異。 … • 赠公告號1264596專利案，係在直下式單-光源前方增加 透鏡片，以將直下式單-燈源轉換為均勻出光之背光模組，但其 所使用的空間仍嫌太大。 台灣公告號M316410、M29872卜530596等專利案，均提供一 種將光源設於矩料光板之祕的設計；惟，其所朗的導光板 皆為前述習知均-厚度的導光板或是楔形導光板，因此均必翻 以數個光源才可以保證出光面的均勻度。 此外，單點光源背光模組的需求還包括有以下幾個原因： 4 M368099 1. ^著科技進步’將會有高照明度、高效能的照明光源陸續被 創作’將來的$光模組彼可能只需要單點光源就可以提供足 夠的照明。 2. 單點絲背光池的製造喊、維㈣換可節省人力與工 時’有利成本控制。 • 3·^單點光_背光·，可以減低生產製造成本。 、4. ^著產業發產及需求，亦有可能將複數個相贼者不同性質 • 之光源整合成為單一光源，使其先行混光後再配合導光板佈 设成為單一光源之背光模組。 s運夥伴或者各戶，可能基於上述理由*要求製造商提供背 光模組的導光板結構。 【新型内容】 本们作的目的’在於解決習知背光模組之傳統楔形導光板的 •、α構’將單-辆、錄大厚度的—娜姆搬射光線進入 、·光板或從導光板的一角端將光線投射進入導光板時，均無法 有效地使出絲獲得足_勻性及輝度的問題。 … 、曰本創作提供料光板結構，主要舰是將導光板每—點位置 ^厚度，依其入光面與所述點位置的距離增加而呈正比例地減小， 藉由縮小^光板的厚度以等比例地補償光線在導光板巾傳遞的亮 度衰減量。 本創作的技術手段’係在導光板側邊的-恤置形成-入光 5 M368099 面，該入光面的厚度為最大，從該入光面往導光板的其他任—位 置所延伸的距離愈大則厚度愈小，藉以僅利用單一光源將光線從 入光面投射進入導光板内傳遞，便可以在導光板的出光面呈現出 均勻的亮度與輝度。 做為一種選擇，本創作的導光板可以是諸如正方形、長方形、 二角形、菱形、…等多邊形，也可以是圓形。 做為另一種選擇，本創作可以將多邊形導光板的一個角端或 疋一邊形成入光面。 做為再一種選擇，本創作也可以在圓形的導光板邊緣一位置 形成入光面。 本創作設於所述多邊形或圓形導光板的入光面，可以是直形 的平面，也可以是缺口形的凹面。 【實施方式】 _ 以下配合圖式對本創作的實施例做更詳細的說明，俾使任何 •熟習該項技藝者在研讀本專利說明書後能據以實施。 第一圖與第二圖為顯示本創作以矩形導光板1配合光源2構 成背光模組的實施例，其中，導光板1的一側面以其周邊輪廓所 構成的範圍形成為出光面12，並在該矩形導光板1的其中一角端 形成一入光面11，所述入光面U可以是將導光板的角端倒角後形 成的直形平面（如第一圖所示），也可以是從角端形成一缺口形態 的凹面（如第二圖所示）；光源2則安裝於該入光面丨丨，使光源產 6 M368099 生的光線知以從入光面η投射進入導光板内傳遞。所述出光面a 可以依實際需要設置增光片、擴散片、…等光學膜片3;相對於出 光面的另一面則可以設置用來反射光線的反射片4。 本創作的特徵，在於所述導光板丨每一點位置的厚度τ，係依 η亥入光面11與所述點位置的距離增加而呈正比例地減小；換兮 之，所述入光面η的厚度為最大，從該入光面11往導光板的其 他任一位置所延伸距離愈大則厚度愈小。該厚度的改變，是形成 _於用來设置反射片4的導光板1一側面，使該面呈具有多面向的 「歪面」（參第-Α圖至第__Ε圖所示），而出光面12則基本上保 持為平面。藉由此-結構’當光源2從入光面n投射光線進入導 光板1内時’光線得以由反射片4往出光面12方向反射出去且 導光板距離光源愈遠處的亮度衰減可以藉由厚度縮小而增加反射 的光量來獲得補償，因而能使整個出光面12的亮度與輝度更為均 勻。 • 本鑛的導光減構，除了可簡Μ面餅錢形導光板 的角端外’也可以如第三_示狀光面u設於多邊料光板的 「中邊在此實施例中’為了使單一光源的光線能擴散地投射 進入導光板内，所述入光面11最好採用缺口形的凹面形態。 前述實施例的導光板是普遍被使用的_，惟，本_的結 構亦_於特殊產品所需要的三_、菱形、_、· ·等背光模 組之導光板。 第四圖與第五圖為顯林創叙铋板丨關形的實施例， 7 M368099 由於圓形沒有棱角，因此，可以選擇任何一個邊緣的位置形成直 形平面（如第四圖所示）或缺口形凹面（如第五圖所示）的入光面。 同樣的，在此一實施例，圓形導光板1每一點位置的厚度，係依 該入光面11與所述點位置的距離增加而呈正比例地減小（如第四 A圖所示）。 以上所述者僅為用以解釋本創作之較佳實施例 ，並非企圖據 之限制’是以，凡有在相同之創作精神 保護之齡。 何修飾或變更，皆仍應包括在本創作意圖 M368099 【圖式簡單說明】 第-為顯示本創作之導光板為矩形，且入光面與光源設於導光板 一角端之實施例俯視示意圖。 第一 A圖為沿第一圖之A-A方向的平面剖視圖。 第一 B圖為沿第一圖之B-B方向的平面剖視圖。 第一 C圖為沿第一圖之C-C方向的平面剖視圖。 第一 D圖為沿第一圖之D-D方向的平面剖視圖。 φ 第一 E圖為沿第一圖之E-E方向的平面剖視圖。 第一圖為顯示本創作導光板之入光面為缺口之凹面形態之實施例 不意圖。 第三圖為本創作之導光板為矩形，且入光面與光源設於導光板一 邊之實施例俯視示意圖。 第四圖為顯示本創作之導光板為圓形，且入光面為直形平面^ 施例俯視示意圖。 、 _ 第四A圖為沿第四圖之D-D方向的平面剖視圖。 第五圖為顯示本創作之導光板為圓形，且入光面為缺口形凹面之 實施例俯視示意圖。 【主要元件符號說明】 1......導光板 π......入光面 12......出光面 'M368099 τ……厚度 2......光源 3……光學膜片 4......反射片The single point of the performance and degree of the South is combined with the introduction, _ reducing the number of wires and attempting to reduce the cost; the disadvantage of Huai' is that no matter which angle the light is irradiated, it will be difficult because the efficiency of the light source is too strong. Control the uniformity of the light-emitting surface of the backlight module. The light guide plate using a single-point light source disclosed in the patent application No. M321113 of the backlight module, the main ship is arranged in the guide structure, and the single-light source is guided from the light guide plate. The effect is much different from the prior art. ... • Grant No. 1264596 patent, which adds a lens sheet in front of a direct-type single-light source to convert a direct-type single-light source into a uniform light-emitting backlight module, but the space used is still too large. Taiwan Patent Publication No. M316410, M29872, 530596, etc., all provide a design for the light source to be placed on the rectangular material light plate; however, the light guide plates are all known as the conventional-thickness light guide plate or wedge guide. The light board, therefore, must be turned over by several light sources to ensure the uniformity of the light surface. In addition, the requirements for single-point light source backlight modules include the following reasons: 4 M368099 1. ^With the advancement of technology, there will be high-illumination, high-efficiency illumination sources that will be created one after another. It may only require a single point source to provide adequate illumination. 2. The manufacturing of the single-point silk backlight pool can be saved by manpower and man-hours. • 3·^ single point light _ backlight · can reduce production and manufacturing costs. 4. The industry's production and demand, it is also possible to integrate multiple light sources of different thieves into a single light source, so that it can be mixed with light and then used as a single light source backlight module. The s carrier or each of the households may require the manufacturer to provide the light guide plate structure of the backlight module for the above reasons*. [New content] The purpose of our work is to solve the traditional wedge-shaped light guide plate of the conventional backlight module, and the α-structure's single-vehicle, recording large-thickness-Nam moving light into, light board or guiding When one corner of the light plate projects light into the light guide plate, it is impossible to effectively obtain the problem of the uniformity and the brightness of the wire. ... 曰 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作 创作The amount of brightness attenuation transmitted by the light in the light guide plate is compensated in equal proportions. The technical means of this creation is based on the side of the light guide plate forming the light-emitting surface of the M368099, the thickness of the light-incident surface being the largest, and the distance extending from the light-incident surface to the other position of the light guide plate. The larger the thickness, the smaller the thickness, so that only a single light source is used to project light from the light incident surface into the light guide plate, so that uniform brightness and brightness can be exhibited on the light exit surface of the light guide plate. Alternatively, the light guide plate of the present invention may be a polygon such as a square, a rectangle, a square, a diamond, or the like, or may be a circle. As an alternative, the creation can form a corner end or a side of the polygonal light guide plate into the glossy surface. As a further option, the creation can also form a light entrance surface at a position on the edge of the circular light guide plate. The creation is provided on the light incident surface of the polygonal or circular light guide plate, and may be a straight plane or a notched concave surface. [Embodiment] _ The following embodiments are described in more detail with reference to the drawings, so that any skilled person can implement the patent specification after studying the patent specification. The first and second figures show an embodiment in which the rectangular light guide plate 1 is combined with the light source 2 to form a backlight module, wherein a side surface of the light guide plate 1 is formed as a light exit surface 12 by a range of its peripheral contour, and A light incident surface 11 is formed at one corner end of the rectangular light guide plate 1. The light incident surface U may be a straight plane formed by chamfering the corner end of the light guide plate (as shown in the first figure), or A concave surface is formed from the corner end (as shown in the second figure); the light source 2 is mounted on the light entrance surface, so that the light generated by the light source 6 M368099 is projected from the light entrance surface η into the light guide plate. Pass inside. The light-emitting surface a may be provided with an optical film 3 such as a light-increasing sheet, a diffusion sheet, or the like according to actual needs; and the other surface of the light-emitting surface may be provided with a reflection sheet 4 for reflecting light. The feature of the present invention is that the thickness τ of each position of the light guide plate is proportionally decreased according to the increase of the distance between the light-incident surface 11 and the position of the point; in other words, the light-incident surface The thickness of η is the largest, and the larger the distance from the light incident surface 11 to any other position of the light guide plate, the smaller the thickness. The thickness is changed to form a side surface of the light guide plate 1 for arranging the reflection sheet 4 so that the surface has a multi-faceted "face" (refer to the first to the __Ε diagram), and The light exit surface 12 remains substantially planar. By the structure - when the light source 2 projects light into the light guide plate 1 from the light incident surface n, the light is reflected by the reflection sheet 4 toward the light exit surface 12, and the brightness of the light guide plate farther away from the light source can be attenuated by The thickness is reduced to increase the amount of reflected light to obtain compensation, thereby making the brightness and luminance of the entire light-emitting surface 12 more uniform. • The light-guide subtraction of the mine, in addition to the corner end of the light-weight light guide plate, can also be set as the third light-emitting surface of the multilayer light-emitting panel in the middle of this embodiment. In order to diffuse the light of a single light source into the light guide plate, the light incident surface 11 is preferably in the form of a notched concave shape. The light guide plate of the foregoing embodiment is generally used, but the structure of the present invention is also _The light guide plate of the backlight module required for special products, such as three _, diamond, _, · · ·. The fourth and fifth pictures are examples of the 林 创 铋 铋 , 7 7, 7 M368099 There is no angularity, therefore, the position of any one of the edges can be selected to form a straight plane (as shown in the fourth figure) or a notched concave surface (as shown in the fifth figure). Similarly, in this embodiment, The thickness of each position of the circular light guide plate 1 decreases in proportion to the distance between the light incident surface 11 and the point position (as shown in FIG. 4A). Explaining the preferred embodiment of the creation is not an attempt to limit it. The same age of creative protection. Any modification or change should still be included in this creative intent M368099 [Simple description of the drawing] - The light guide plate for this creation is rectangular, and the light-incident surface and light source are set on the light guide plate. The first embodiment is a plan view along the AA direction of the first figure. The first B is a plan cross-sectional view along the BB direction of the first figure. The first C picture is along the first figure. A cross-sectional view of the CC direction. The first D is a cross-sectional view taken along the DD direction of the first figure. φ The first E is a plan cross-sectional view along the EE direction of the first figure. The first figure shows the entrance of the present light guide. The embodiment in which the glossy surface is a concave shape of the notch is not intended. The third figure is a schematic plan view of the embodiment in which the light guide plate is rectangular, and the light incident surface and the light source are disposed on one side of the light guide plate. The fourth figure shows the creation of the present invention. The light guide plate is circular, and the light incident surface is a straight plane. The top view is a plan view along the DD direction of the fourth figure. The fifth figure shows the light guide plate of the present invention as a circle. Shape and light A schematic view of the embodiment of the notched concave surface. [Main component symbol description] 1... Light guide plate π... Light-incident surface 12... Light-emitting surface 'M368099 τ... Thickness 2...light source 3...optical diaphragm 4...reflector