200949370 六、發明說明： 【發明所屬之技術領域】 本發明涉及HX應驗諸如液晶電視、細、手機、… 等顯示器做為發光裝置的背光模組。 【先前技術】 對於-些電子產品而言’其操作介面是碰夠發絲了涉及 ❹照明效果外’還關係到視覺美觀、質感等方面的附加價值。所述 具有發光效果的操作介面，通常包含有一背光模組，該背光模組 的結構主要包括有一導光板與至少一光源，導光板則包含一出光 面以及至少-人光面，與出光面相對之底面通常做為人光面，或 可將導光板的侧邊做為入光面，並於該入光面設置光源；導光板 的正面可以按實際需要依序貼設增光片、擴散片等光學膜片。普 遍被使用的側光式導光板，即在導光板的至少—側邊設置光源， ©而導光板相對於出絲的底賴通常設置有反糾，靖溢出導 光板的光線反射时至導光㈣重新整理糊，並防止背光模組 漏光、過增光片與擴散片的光線由預定之視角或方向導出，以 呈現良好的光輝度與均勻度。所述光源可為發光二極體⑽D， light emitting diode)或冷陰極管(CCFL);由於體積小、耗電少、 使用哥命長的優點，使用於背光模組的光源已有逐漸由LED取代 CCFL的趨勢。 由於消費者對產品的外觀造型愈來愈挑剔，致使廠商也愈來 3 200949370 愈重視產品設計的美學，有些產品基於造型上的因素，其需要產 生發光效果的部位會隨著所述造型而曲折，因此，提供發光效果 的背光模組也必須隨之配合；由於背光模組中的導光板都是平面 式的，若需要配合曲折的產品造型時，即必須將導光板搭接組合， 並在各自導光板提供光源，以將光線射入導光板。 第一圖與第一A圖所示的習知搭接式背光模組，分別在兩導 光板A與B的一端設置一光源A1與B1，該兩光源A1與B1將光線 ❹分別往S絲錢長財向㈣進人導光板崎如在出光面產 生發光效果；惟，該兩導光板人與3的搭接位置會因為總厚度增 加而和導光板的其他區域有輝度及色度上的明顯差異，且在c區 域會造成明暗不均的情況，造成目視效果不佳。 【發明内容】 本發_目的，在於職前祕料#光做之導光板，其 搭接區域的輝度與色度會和導光板其他未搭接的區域有明顯差 異以致於影響目視效果之舒適性的問題。 本發明的特徵’是在背細組之兩導紐的搭接位置，設置 可以將導光板内的光線適當進入另一導光板的結構，使進入該 導光板内的兩種光線混光達成漸變的混合比，進而由一種輝度或 色度轉換到另-種輝度或色度，產生柔順的視覺效果。 本發月提供的>肖除搭接式背光模組色差的方法，其中一技術 系is至夕―個相互搭接的第一導光板與第二導光板，該第 200949370 -導光板與第二導光板分職立設有可將光線射人各自導光板内 的光源，以及該第-導光板與第二導光板相對於其出光面的另一 面分別設有用來反射光線的第—反射片與第二反射片，其中，該 搭接區域的第-反射片設置複數洞孔，使射入第二導光板的光線 通過該等洞孔喃第-導光板内的光線混光，進而從第—導光板 的出光面呈現出柔和更均勻的輝度與色度。 本發明的另一技術手段，可以在前述技術手段的基礎上，在 β 第導光板與第二導光板的出光面設置諸如增光片、擴散片等光 學膜片，並進一步在該兩導光板搭接區域的光學膜片設置複數對 應於反射片之洞孔位置的貫穿孔，使射入第二導光板的光線通過 該等洞孔與貫穿孔而與第一導光板内的光線混光，進而從第一導 光板的出光面呈現出柔和、均勻的輝度與色度。 做為一種選擇，所述設於第一反射片之搭接位置的複數洞 孔，其直徑可以全部相同’也可以部分相同，部分不相同，或是 ® 各個洞孔的直徑都不相同。 做為另一種選擇，所述設於第一反射片之搭接位置的複數洞 孔形狀，可以是圓形、三角形、正方形、長方形、菱形、多邊形 等各種適合的幾何形狀或不規則形狀。 做為又一種選擇，所述設於第一反射片之搭接位置的複數洞 孔’可以呈規則排列，也玎以呈不規則排列。 做為再一種選擇，所述設於光學膜片的貫穿孔，其孔徑或大 小可以和反射片上的洞孔大小相同或不相同。 200949370 做為又一種選擇，所述設於光學膜片的貫穿孔，其形狀可以 和反射片上的洞孔形狀相同或不相同。 【實施方式】 以下配合圖式及元件符號對本發明的實施方式做更詳細的說 * 明’俾使熟習該項技藝者在研讀本說明書後能據以實施。 第二圖至第三圖為顯示本發明消除搭接式背光模組色差的方 ® 法之具體貫施例的俯視圖、局部放大圖與前視圖。本實施例係以 兩個導光板的搭接做說明，惟，事實上可以依產品的實際需要做 三層搭接或更多層的搭接；無論以若干層進行搭接，必然會有位 於上層與下層的位置關係，或前方與後方的位置關係；在本實施 例係以上層與下層的位置關係做說明。以第二圖至第三圖之雙層 搭接之導光板為例，係包含一端相互接接的一第一導光板丨與一 第一導光板2’且第一導光板1位於上層，第二導光板2位於下層； ❹第一導光板1與第二導光板2的底面分別設有第一反射片u與第 二反射片21，並可視實際需求在兩導光板上方的出光面設置諸如 增光片、擴散片、…等光學膜片13與23。第一導光板1與第二導 光板2的一端側邊則分別設置至少一第一光源12與至少一第二光 源22 ;所述光源最好採用發光二極體(LED),藉以能縮小整個背光 模組的體積；第-光源12與第二光源22分別將光線從第一導光 板1與第二導光板2的端部投射進入導光板内傳導，再分別由第 -反射片11與第二反射片21將光線反射，進而由第一導光板j 200949370 與第二導光板2的出光面射出以產生發光視覺效果。 本發明將兩導光板搭接串聯時，是將第一導光板丨一端的下 面直接堆疊於第二導光板2 —端的上面，亦即第一反射片11的下 面與第二導光板2的出光面或光學膜片23重疊接觸，因而在第一 導光板1與第一導光板2形成共同的搭接區域。本發明的特徵， 是在所述搭接區域的第一反射片u設置複數洞孔m，使得光源 22射入第三#光板2的光線除了可以直接從第二導光板2的出光 ❹面呈現出來之外’部分光線還可以穿過光學膜片23後通過該些洞 孔111進入第一導光板卜進而和由光源12射入第一導光板丄内 的光線形成混光’再從第-縣板丨的出光面呈現出來。此外， 本發明還可轉搭接輯的絲則23設£複數鑛應於該等洞 孔111位置的貫穿孔231，以增加進入第一導光板j内的光量。藉 由前述的方法’得以使進人第—導光板丨_兩種规混光達成 漸變的混合比，使其由-種輝度或色度轉換到另一種輝度或色 ® 度，產生柔順的視覺效果’提昇目視的舒適性。 前述設於第-反射片U的洞孔⑴，可以依據要讓光線通過 的光量設計其孔徑大小或形狀，例如，可以使該等洞孔⑴的直 徑大小都_ ;也可伽物孔ln的直歡小部分相同，且部 分不相同；或是該等洞孔U1的直徑大小都不相同。該些洞孔⑴ 的形狀則可以是圓形、三㈣、正方形、長形方、菱形、多邊形、… 任何適當的幾何形狀，也可以是不規則形狀。甚至，該等洞孔⑴ 可以呈酬侧，也可以呈不規麟列。紗光學則Μ上的貫 7 200949370 穿孔231的孔彳空大小或形狀可以和戶斤述洞孔hi的孔徑大小相 同’也可以不相同。 下所作有關本發明之二彳'疋以 ，凡有在相同之發明精神 保護之範#。何修飾或變更’⑽應包括在本發明意圖 〇 ❹ 8 200949370 【圖式簡單說明】 第一圖為顯示習知搭接式背光模組結構之俯視平面示意 圖。 第一 A圖為第一圖之ία部分的局部放大圖。 第二圖為顯示本發明將兩導光板搭接之俯視平面示意圖 第二A圖為第二圖之2A部分的局部放大圖。 第三圖為顯示第二圖之前視平面示意圖。 【主要元件符號說明】 1 •第一導光板 11·.· 第一反射片 111·· 12... 第一光源 13·.· ••光學膜片 2····. ’1一導光板 21·.. …第二反射片 22··· ••第二光源 23··. •••光學膜片 231. …··貫穿孔 2A... ❹ 9200949370 VI. Description of the Invention: [Technical Field] The present invention relates to a HX that recognizes a display such as a liquid crystal television, a thin, a mobile phone, or the like as a backlight module of a light-emitting device. [Prior Art] For some electronic products, the operation interface of the electronic product is related to the visual beauty, texture and the like in terms of touching the hair. The illuminating operation interface generally includes a backlight module. The backlight module mainly includes a light guide plate and at least one light source. The light guide plate includes a light emitting surface and at least a human light surface, and the light emitting surface is opposite to the light emitting surface. The bottom surface is usually used as a human surface, or the side of the light guide plate can be used as a light incident surface, and a light source is disposed on the light incident surface; the front surface of the light guide plate can be sequentially provided with a brightness enhancement sheet, a diffusion sheet, etc. according to actual needs. Optical film. Generally used side light type light guide plate, that is, a light source is disposed at least at the side of the light guide plate, and the light guide plate is usually provided with a reverse correction with respect to the bottom of the wire, and the light reflected from the light guide plate is reflected to the light guide. (4) Refining the paste and preventing the backlight module from leaking light, and the light passing through the brightness enhancement sheet and the diffusion sheet is derived from a predetermined viewing angle or direction to exhibit good brightness and uniformity. The light source may be a light emitting diode (10), or a cold cathode tube (CCFL); due to the advantages of small size, low power consumption, and long life, the light source used in the backlight module has been gradually replaced by LEDs. Replace the trend of CCFL. As consumers become more and more critical about the appearance of products, the manufacturers are becoming more and more 3 200949370 The more attention is paid to the aesthetics of product design, some products are based on the factors of styling, and the parts that need to produce luminous effects will be twisted with the shape. Therefore, the backlight module that provides the illuminating effect must also be matched; since the light guide plates in the backlight module are all flat, if the product shape needs to be matched with the zigzag, the light guide plate must be lapped and combined, and The respective light guides provide a light source to direct light into the light guide. In the first figure and the conventional lap-type backlight module shown in FIG. A, a light source A1 and B1 are respectively disposed at one ends of the two light guide plates A and B, and the two light sources A1 and B1 respectively transmit the light ray to the S wire. Qian Changcai (4) enters the light guide plate to produce a luminous effect on the light-emitting surface; however, the overlapping position of the two light guide plates and the three will have brightness and chromaticity due to the increase of the total thickness and other areas of the light guide plate. Significant differences, and in the c area will cause uneven brightness, resulting in poor visual effects. SUMMARY OF THE INVENTION The present invention is directed to a light guide plate made of light, and the brightness and chromaticity of the overlapping area are significantly different from other uncovered areas of the light guide plate, so as to affect the comfort of the visual effect. Sexual problem. The feature of the present invention is that in the overlapping position of the two guides of the back group, a structure for appropriately guiding the light in the light guide plate into the other light guide plate is provided, so that the two kinds of light entering the light guide plate are mixed to achieve a gradual change. The mixing ratio, which in turn is converted from a luminance or chromaticity to another luminance or chromaticity, produces a compliant visual effect. The method for removing the chromatic aberration of the lap type backlight module provided by the present month, wherein one of the technologies is the first light guide plate and the second light guide plate which are overlapped with each other, the 200949370 - the light guide plate and the first The two light guide plates are respectively provided with light sources for injecting light into the respective light guide plates, and the first light guide plate and the second light guide plate are respectively provided with a first reflection sheet for reflecting light with respect to the other side of the light exit surface thereof. And the second reflective sheet, wherein the first reflection sheet of the overlapping region is provided with a plurality of holes, so that the light incident on the second light guide plate is mixed by the light in the first light guide plate and the light guide plate, and further - The light-emitting surface of the light guide plate exhibits a softer and more uniform brightness and chromaticity. According to another technical means of the present invention, an optical film such as a light-increasing sheet or a diffusion sheet may be disposed on the light-emitting surface of the β-light guide plate and the second light guide plate, and further, the two light guide plates may be placed on the light-emitting surfaces of the second light guide plate and the second light guide plate. The optical film of the connection region is provided with a plurality of through holes corresponding to the positions of the holes of the reflection sheet, so that the light incident on the second light guide plate passes through the holes and the through holes to mix with the light in the first light guide plate, thereby further The light emitting surface of the first light guide plate exhibits soft and uniform brightness and chromaticity. Alternatively, the plurality of holes provided at the overlapping positions of the first reflecting sheets may have the same diameter ‘may be partially the same, the portions are different, or the diameters of the respective holes are different. Alternatively, the plurality of hole shapes provided at the overlapping positions of the first reflection sheets may be various suitable geometric shapes or irregular shapes such as a circle, a triangle, a square, a rectangle, a diamond, and a polygon. Alternatively, the plurality of holes ' disposed at the overlapping positions of the first reflecting sheets may be regularly arranged or arranged in an irregular arrangement. Alternatively, the through hole of the optical film may have the same or different aperture or size as the hole on the reflection sheet. As a further alternative, the through-holes provided in the optical film may have the same or different shape as the holes on the reflective sheet. [Embodiment] Hereinafter, the embodiments of the present invention will be described in more detail with reference to the drawings and the reference numerals, and can be implemented by those skilled in the art after studying this specification. 2 to 3 are a plan view, a partial enlarged view and a front view showing a specific embodiment of the method for eliminating the chromatic aberration of the lap type backlight module of the present invention. This embodiment is described by the lap joint of two light guide plates. However, in fact, it is possible to make three layers of overlap or more layers according to the actual needs of the product; no matter whether it is overlapped by several layers, there will inevitably be located. The positional relationship between the upper layer and the lower layer, or the positional relationship between the front and the rear; in the present embodiment, the positional relationship between the upper layer and the lower layer is explained. For example, the first light guide plate 一端 and the first light guide plate 2 ′ are connected to each other, and the first light guide plate 1 is located on the upper layer. The two light guide plates 2 are located on the lower layer; the bottom surfaces of the first light guide plate 1 and the second light guide plate 2 are respectively provided with a first reflection sheet u and a second reflection sheet 21, and may be disposed on the light exit surface above the two light guide plates according to actual needs. Optical films 13 and 23 such as a light-increasing sheet, a diffusion sheet, and the like. At least one first light source 12 and at least one second light source 22 are respectively disposed on one end side of the first light guide plate 1 and the second light guide plate 2; the light source is preferably a light emitting diode (LED), thereby reducing the entire a volume of the backlight module; the first light source 12 and the second light source 22 respectively project light from the end portions of the first light guide plate 1 and the second light guide plate 2 into the light guide plate, and then the first-reflecting sheet 11 and the first The two reflection sheets 21 reflect the light, and are further emitted by the first light guide plate j 200949370 and the light exit surface of the second light guide plate 2 to generate a light-emitting visual effect. When the two light guide plates are connected in series, the lower surface of one end of the first light guide plate is directly stacked on the upper end of the second light guide plate 2, that is, the light from the lower surface of the first reflection sheet 11 and the second light guide plate 2 The face or optical film 23 is in overlapping contact, so that the first light guide plate 1 and the first light guide plate 2 form a common overlapping region. A feature of the present invention is that a plurality of holes m are disposed in the first reflection sheet u of the overlapping region, so that the light of the light source 22 entering the third light panel 2 can be directly presented from the light exit surface of the second light guide plate 2. Outside the exit, part of the light can pass through the optical film 23 and enter the first light guide plate through the holes 111 to form a light mixture with the light incident from the light source 12 into the first light guide plate. The light surface of the county plate is presented. In addition, the present invention can also transfer the wire 23 to the through hole 231 where the plurality of ore should be placed at the positions of the holes 111 to increase the amount of light entering the first light guide plate j. By the method described above, it is possible to achieve a gradual mixing ratio of the two types of light mixing, such that the two kinds of luminances or chromaticities are converted to another luminance or color degree, resulting in a smooth vision. The effect 'improves visual comfort. The hole (1) provided in the first reflection sheet U can be designed according to the amount of light through which the light is allowed to pass. For example, the diameter of the holes (1) can be made _; The straight parts are the same and partially different; or the diameters of the holes U1 are different. The shapes of the holes (1) may be circular, three (four), square, elongated, diamond, polygonal, ... any suitable geometric shape, or may be irregular shapes. Even these holes (1) can be on the reward side or in a random arrangement. The optical axis of the yarn is the same as that of the hole. The thickness or shape of the hole 231 can be the same as the size of the hole of the hole hi. The following is a description of the second invention of the present invention, where there is a protection in the same spirit of invention. How to modify or change '(10) should be included in the intention of the present invention 〇 2009 8 200949370 [Simple description of the drawings] The first figure is a top plan view showing the structure of a conventional lap-type backlight module. The first A picture is a partial enlarged view of the ία portion of the first figure. 2 is a top plan view showing a plan view of the present invention for overlapping two light guide plates. FIG. 2A is a partial enlarged view of a portion 2A of the second figure. The third figure is a schematic diagram showing the front view of the second figure. [Description of main component symbols] 1 • First light guide plate 11·.· First reflection sheet 111·· 12... First light source 13···••Optical diaphragm 2····. '1-light guide 21·.. ...the second reflection sheet 22···••The second light source 23··.•••Optical diaphragm 231. ...··through hole 2A... ❹ 9