經濟部智慧財產局員工消費合作社印製Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs
^-----------------0 (請先閱讀背面之注音？事項再填寫本頁} 1234681 Α7^ ----------------- 0 (Please read the phonetic on the back? Matters before filling out this page} 1234681 Α7
【本發明之背景】 傳統的液晶顯7F器之光源多是採用點光源（如L E D ) 發光，約如第1圖所示，由於點光源類似球面光源，光線 發散出去時有一發散角，因此數個點光源產生的光源互相 干涉會於進入一般傳統之導光板時於導光板内產生亮暗區 相間之不均勻光帶，其乃由於入射光線不均勻所引起。 為了改善亮暗區相間的情形，必須於導光板提供均勻 的光線。以往係利用於導光板上進行網點或圖樣之設計， 或是於導光板表面上再附加一層具網點或圖樣設計之光學 薄膜，以均勻擴散進入導光板之光線，但對於LED類之點 光源成效有限。也曾經有人提出解決方案，其如第2圖所 不，點光源20將光線射入折射板21中，該折射板21再將 光線折射入導光板2 2中，此解決方案雖然提供了均勻的光 線，解決了焭暗區相間的情形，然而光線在進入進入導光 板2 2之前，尚經過折射板2 1折射，以及空氣層之折射吸 收，因而造成光量上的耗損。因此，若要有足夠的光量光 源供應顯示器所需，則必須加大功率，如此一來又增加了 成本預算。 ^ 本纸張尺度適用中國國家標準{CNSM，!規格⑵0 X 297公4爱） 經濟部智慧財產局員工消費合作社印製 1234681 Λ7[Background of the present invention] The light source of traditional LCD display 7F devices mostly uses point light sources (such as LEDs) to emit light. As shown in Figure 1, because point light sources are similar to spherical light sources, there is a divergence angle when the light is emitted. The mutual interference of the light sources generated by the point light sources will cause uneven light bands between the bright and dark areas in the light guide plate when entering the conventional light guide plate, which is caused by the uneven incident light. In order to improve the light and dark areas, it is necessary to provide uniform light to the light guide plate. In the past, the dots or patterns were designed on the light guide plate, or an optical film with dots or patterns was added to the surface of the light guide plate to evenly diffuse the light entering the light guide plate. However, it is effective for LED point light sources. limited. Some people have also proposed a solution. As shown in FIG. 2, the point light source 20 emits light into the refractive plate 21, and the refractive plate 21 refracts the light into the light guide plate 22. Although this solution provides a uniform The light resolves the dark and dark areas. However, before the light enters the light guide plate 22, it is refracted by the refracting plate 21 and the refracting and absorbing of the air layer, which causes the loss of light quantity. Therefore, if there is enough light source to supply the display, the power must be increased, which in turn increases the cost budget. ^ This paper size applies the Chinese national standard {CNSM ,! Specification ⑵0 X 297 male 4 love) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 1234681 Λ7
【本發明之概述】 本發明之主要目的係在提供—種平面顯示器用之導光 板，俾能將平面顯示器使用之光源㈣地發散於導光板之 全體，並同時能減少光量的耗損。 本發明之次要目的係在提供一種平面顯示器用之導光 板，俾把知點光源所發散的光，轉換成約略指向相反於導 光板入射光側之較均勻的之平行線光源，並可與現有之網 點設計相容，以簡化開發之時間。 本發明之又一目的係在提供一種均勻分佈平面顯示 裝置的光線的方法，俾能將平面顯示器使用之光源均勻地 發散於導光板之全體，並同時能減少光量的耗損，並將點 光源所發散的光’導向轉換成約略指向相反於入射光側之 較均勻的之平行線光源，且可’與現有之網點設計相容，以 簡化開發之時間 本發明之平面顯示器用之導光板，係配合至少一個 點光源’其包括：一板，以均勻分散由點光源入射光於該 板全體，以及至少一旅形透鏡，係位於該板一側邊，以將 由該點光源射出之發散光，均勻地導向該板相反於該弧形 透鏡之另一端；其中，該點光源位於該板具弧形透鏡之一 側0 本紙張尺度適用中國國家標準(CNS)A4規格（21〇 χ 297公沒）[Summary of the present invention] The main purpose of the present invention is to provide a light guide plate for a flat display, which can radiate the light source used by the flat display to the entire light guide plate, and at the same time can reduce the loss of light quantity. A secondary object of the present invention is to provide a light guide plate for a flat display, which converts the light emitted by the point light source into a more uniform parallel line light source which is approximately directed to the side opposite to the incident light of the light guide plate, and can be used with Existing outlet designs are compatible to simplify development time. Another object of the present invention is to provide a method for uniformly distributing the light of a flat display device, which can evenly distribute the light source used by the flat display to the entire light guide plate, and at the same time can reduce the loss of light amount, and The divergent light is guided and converted into a more uniform parallel line light source that is approximately directed opposite to the incident light side, and can be compatible with the existing dot design to simplify the development time. The light guide plate for the flat display of the present invention is In conjunction with at least one point light source, it includes: a plate to uniformly disperse light incident from the point light source on the entire plate, and at least one travel lens located at one side of the plate to diffuse the light emitted by the point light source, Evenly guide the plate opposite to the other end of the curved lens; wherein, the point light source is located on one side of the plate with the curved lens. 0 This paper size is in accordance with Chinese National Standard (CNS) A4 (21〇χ297297) )
裝--------訂---------A (請先閱讀背面之注意事項再填寫本頁) 1234681 A7 --—- 五、發明說明（3 ) 本發明均勻分佈平面顯示裝置的光線的方法，包括 下列步驟；提供至少一個點光源：以及提供一具有孤形透 鏡之導光板，其中該弧形透鏡位於該導光板之一側，且兮 點光源與該弧形透鏡位於該導光板之同一側。 由於本發明構造及方法新穎，能提供產業上利用，且 確有增進功效，故依法申請發明專利。 【圖式簡單説明】 第1圖係習知技術以點光源將光線射入導光板之示意圖。 第2圖係又一習知技術以一折射板將點光源轉換為線光源 並射入導光板之示意圖。 Λ' 第3圖係本發明利用弧形透鏡將點光源轉換為線光源並射 入導光板之示意圖。 第4圖係本發明點光源經過弧形透鏡折射而成為線光源之 不意圖。-------- Order --------- A (Please read the precautions on the back before filling out this page) 1234681 A7 ----- 5. Description of the invention (3) The invention is evenly distributed A method for light from a flat display device includes the following steps: providing at least one point light source: and providing a light guide plate with an solitary lens, wherein the arc lens is located on one side of the light guide plate, and the point light source and the arc shape The lens is located on the same side of the light guide plate. Because the structure and method of the present invention are novel, can provide industrial use, and indeed have enhanced efficacy, they have applied for an invention patent in accordance with the law. [Brief description of the drawings] FIG. 1 is a schematic diagram of the conventional technology for injecting light into a light guide plate with a point light source. Fig. 2 is a schematic diagram of another conventional technique that converts a point light source into a linear light source with a refraction plate and enters the light guide plate. Λ 'FIG. 3 is a schematic diagram of the present invention using a curved lens to convert a point light source into a linear light source and incident on a light guide plate. Fig. 4 is a schematic view of the point light source according to the present invention being refracted by an arc lens and becoming a linear light source.
裝 ----訂------- Γ 请先閱讀背面之注意事項再填寫本頁} 經濟部智慧財產局員工消費合作社印製 【圖號説明】Loading ---- Order ------- Γ Please read the precautions on the back before filling out this page} Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs [Illustration of drawing number]
本紙張尺度適用中國國家標準（CNS)A4規格（2】G X 297公兔） 1234681 Λ7 ~----- 五、發明說明（斗） ^"~- 限制，較佳為發光二極體。本發明之派形透鏡無限制，較 佳為可將位於焦點光源之發散光導向為約略同向平行㈣ 線光源之準直透鏡或凸面球鏡。本發明之光源位置無限 制，較佳為置於該弧形透鏡的焦點位置。本發明之光源數 目無限制，至少具有—光源，較佳為複數之結。本發明 之光源排列係位於該導光板之弧形透鏡同一側，較佳為於 弧形透鏡同一側且成縱向排列。本發明導光板之弧形透鏡 與茲導光板 < 結合方式無限制，較佳為該板與該弧形透鏡 係整合為一體，最佳為以射出成型法將該板與該弧形透鏡 係整合為一體。本發明導光板之板本身或弧形透鏡之材料 典限制，較佳為板及弧形透鏡之材料相同且為丙埽酸系聚 合物或甲基丙烯酸系聚合物，最佳為pMMA。本發明適用 <導光板無限制，可為任何習用之導光板，較佳為平板或 楔形板。 · 本發明之較佳實施例，請參考第3圖所示，本發明提 供均勻光源之背光源包括至少一個點光源3 〇，該點光源 30以並列排列，以提供該顯示面板所需之光源；以及一導 光板3 2，該導光板3 2之入光側具有至少一個以上之弧形 透鏡3 1，其可將由該點光源3〇射出之發散光，用以約略 準直该發散之入射光，並均勻地循約略平行直線之方式入 射於該導光板3 2。 本發明之較佳實施例之細部説明，請參考第4圖所 示，點光源3 0類似一旅面或球面光源，其光線以各種角度 向外發射出去。本較佳實施例為將該點光源3 〇置於該弧形 本紙張尺度適用中國_家標準（CNS)A4規格⑵Q x 297公7爱） (請先閱讀背面之注意事項再填寫本頁) ^--------^---------^ 經濟部智慧財產局員工消費合作社印一取 1234681This paper scale applies Chinese National Standard (CNS) A4 specifications (2) G X 297 male rabbit) 1234681 Λ7 ~ ----- V. Description of the invention (bucket) ^ " ~-Limitation, preferably a light-emitting diode. The pie-shaped lens of the present invention is not limited, and is preferably a collimating lens or a convex spherical lens that can guide the divergent light located at the focal light source into approximately the same-direction parallel chirped light source. The position of the light source of the present invention is infinite, and it is preferably placed at the focal position of the curved lens. The number of light sources of the present invention is not limited, and at least there are-light sources, preferably plural knots. The light source arrangement of the present invention is located on the same side of the curved lens of the light guide plate, and is preferably arranged on the same side of the curved lens in a longitudinal direction. The combination of the arc lens of the light guide plate of the present invention and the light guide plate < is not limited, preferably the plate is integrated with the arc lens system, and the plate and the arc lens system are best formed by injection molding. Integration as one. The material of the plate of the light guide plate of the present invention or the material of the curved lens is limited. It is preferable that the material of the plate and the curved lens is the same and is a propionic acid polymer or a methacrylic polymer, and most preferably pMMA. The invention is applicable < the light guide plate is not limited, and can be any conventional light guide plate, preferably a flat plate or a wedge plate. · For a preferred embodiment of the present invention, please refer to FIG. 3. The backlight source for providing a uniform light source according to the present invention includes at least one point light source 30. The point light sources 30 are arranged side by side to provide the light source required by the display panel. And a light guide plate 32, the light guide side of the light guide plate 32 has at least one curved lens 31, which can diverge the light emitted by the point light source 30 to approximately collimate the divergent incidence Light is incident on the light guide plate 32 uniformly and in a manner of approximately parallel straight lines. For a detailed description of the preferred embodiment of the present invention, please refer to FIG. 4. The point light source 30 is similar to a traveling surface or spherical light source, and its light is emitted outward at various angles. In this preferred embodiment, the point light source 30 is placed on the curved paper. The paper size is applicable to China_Home Standard (CNS) A4 size ⑵Q x 297 male 7 love) (Please read the precautions on the back before filling this page) ^ -------- ^ --------- ^ Employee Cooperatives of Intellectual Property Bureau of the Ministry of Economy
五、發明說明（孓） 透鏡31之焦點處，由點光源3 0發射出去的各種角度的光 線經由弧形透鏡3 1折射準直作用而成為行進方向與該導光 板邊緣角度一致的光線，因此點光源3 〇之光線經由弧形透 鏡3 1的折射轉換而成為一均勻的線光源。 再請參考第3圖所示，每一個點光源3 〇係對應一個弧 形透鏡3 1。由於點光源3 〇所發射出的光源具有一發散 角’當光線到達該導光板32時具有一寬度l，此寬度L即 為派形透鏡3 1的寬度，因此該孤形透鏡3 1可以完全準直 折射由該對應點光源3 〇所發散出的光線，並將其轉換為線 光源。該弧形透鏡3 1與該導光板32以射出成型方式而一 體成型，如此一來，經由弧形透鏡31轉換為線光源的光線 可以直接進入該導光板3 2，而不需經過再一次介質間的穿 透而減損光量。 本發明之導光板可更與其他光學元件結合而為提供均 勻線光源的光學模組。其包括至少一光源，用以提供顯示 為所需的光；一導光板，一板，以均勻分散入射光於該板 全體，以及至少一旅形透鏡，係位於該板一側邊，以將由 该點光源射出之發散光，均勻地導向該板相反於該?瓜形透 鏡之另一端；以及一光擴散層，用以將光源擴散並能夠均 勻地分佈於面板上。 本發明之均勻分佈背光源中的光線的方法，如上實施 例所述，係利用提供至少一個點光源：以及提供一具有弧 形透鏡之導光板，其中該弧形透鏡位於該導光板之一側， 且該點光源與該弧形透鏡位於該導光板之同一側。.以將由 本纸張尺度適用中國國家標準（CNS)A4規格（210 X 297公& ) (請先閱讀背面之注意事項再填寫本頁) -111 經濟部智慧財產局員工消費合作社印制π 1234681V. Description of the Invention (孓) At the focal point of the lens 31, light of various angles emitted by the point light source 30 is refracted and collimated by the arc lens 31 to become a light with a traveling direction consistent with the angle of the edge of the light guide plate. The light from the point light source 30 is transformed into a uniform line light source through the refraction conversion of the arc lens 31. Please refer to FIG. 3 again, each point light source 30 is corresponding to an arc lens 31. Since the light source emitted by the point light source 30 has a divergence angle, when the light reaches the light guide plate 32, it has a width l, and this width L is the width of the pie lens 31, so the solitary lens 31 can be completely The light emitted by the corresponding point light source 30 is collimated and refracted and converted into a line light source. The curved lens 31 and the light guide plate 32 are integrally formed by an injection molding method. In this way, the light converted into a linear light source through the curved lens 31 can directly enter the light guide plate 32 without passing through the medium again. The amount of light is impaired by the penetrating between them. The light guide plate of the present invention can be further combined with other optical components to provide an optical module with a uniform light source. It includes at least one light source to provide the light required for display; a light guide plate, a plate to uniformly disperse the incident light throughout the plate, and at least one travelling lens located on one side of the plate so that The divergent light emitted by the point light source is evenly guided to the other end of the plate opposite to the melon-shaped lens; and a light diffusion layer for diffusing the light source and being able to be evenly distributed on the panel. According to the method for uniformly distributing light in a backlight source according to the present invention, as described in the above embodiment, at least one point light source is provided: and a light guide plate having a curved lens is provided, wherein the curved lens is located on one side of the light guide plate. And the point light source and the arc lens are located on the same side of the light guide plate. In order to apply the Chinese National Standard (CNS) A4 specification (210 X 297 male &) to this paper size (Please read the precautions on the back before filling out this page) -111 Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economic Affairsπ 1234681