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TWI354838B - Backlight module and method for manufacturing the - Google Patents

Backlight module and method for manufacturing the Download PDF

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Publication number
TWI354838B
TWI354838B TW95146227A TW95146227A TWI354838B TW I354838 B TWI354838 B TW I354838B TW 95146227 A TW95146227 A TW 95146227A TW 95146227 A TW95146227 A TW 95146227A TW I354838 B TWI354838 B TW I354838B
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Taiwan
Prior art keywords
backlight module
light
guiding layer
manufacturing
bottom plate
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TW95146227A
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Chinese (zh)
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TW200825562A (en
Inventor
Cheng Hsien Yu
Cheng Feng Tsai
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Chimei Innolux Corp
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Publication of TWI354838B publication Critical patent/TWI354838B/en

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1354838 六、發明說明: [0001] [0002] [0003] [0004] [0005] 095146227 100年06月10日按正替换頁 【發明所屬之技術領域】 本發明係關於一種背光模組及其製造方法。 【先前技術】 ^著數位科技的發展,液晶顯示產品已廣泛地應用在日 常生活的各個層面中,對液晶顯示螢幕的畫質要求也逐 步提高。但是液晶本身不會發光,f要有光源不斷提供 光線射入液晶顯示螢幕,方可實現畫面顯示,在液晶顯 示產品中,通常選擇背光模組來提供光線。 凊參閱圖1,係一種先前技術所揭露之背光模組之截面示 忍圖。該背光模組1包括一稜鏡片、一擴散、一光 源12、一光源罩13、一導光板14、一膠框15、一反射片 16及一金屬框17。其中,該光源罩13收容該光源12,該 棱鏡片10、該擴散片11、該導光板14及該反射片16依次 重疊設置’該膠框15與該金屬框17配合收容該稜鏡片1〇 、該擴散片11、該光源罩13、該導光板14及該反射片16 〇 該導光板14係一矩形平板,其具有一入光面141、一出光 面142及一底面143。該出光面142與該底面143相對設置 ’且分別與該入光面141相鄰。該底面143間隔設置複數 半球形網點144。 該背光模組1用於液晶顯示裝置以提供背光時,該光源12 產生的光線自該入光面141導入該導光板14,該入射光線 藉由該導光板14處理後由該出光面142射出,並經由該擴 散片11及該稜鏡片10提供給液晶顯示面板。 表單編號A0101 第3頁/共17頁 1003205736-0 1354838 [0006] [0007] [0008] [0009] [0010] 095146227 100年06月10日棱正替換頁 然而,上述背光模組1中,由於該導光板14之底面143設 置複數網點144,故該導光板14與該反射片16之間存在間 隙,如圖2所示。在被該反射片16反射的光線中,現假設 恰好經過該導光板14底面143邊緣的反射光線的反射角為 α,則反射角小於α的反射光線均會射入該導光板14, 而反射角大於α的光線均會射入該膠框15並被吸收,造 成部份光線的損失,從而使該光源12光利用率降低;且 ,組裝該背光模組1時,該導光板14需藉由該膠框15固持 ,這將增加組裝工序及組裝時間,從而提高組裝成本。 【發明内容】 有鑑於此,提供一種能有效提高光源光利用率及降低組 裝成本的背光模組實為必需。 同時,有必要提供一種該背光模組的製造方法。 一種背光模組,其包括一光源及一金屬框,該金屬框包 括一底板及一導光層,該底板表面具有複數網點,該底 板與該網點的表面設有一層具高反射率的金屬膜,該導 光層覆蓋該網點所對應的金屬膜,該導光層與該金屬框 及該金屬膜係一體的,該光源設於該底板表面且靠近該 導光層側面設置。 一種背光模組的製造方法,其包括以下步驟:提供一金 屬框,該金屬框包括一底板;將該底板分成二相鄰區域 ,並在其中一區域的表面製造複數間隔分佈的網點,採 用化學沉積的方法,於該底板及該網點的表面形成一金 屬膜;在該網點及該區域的表面所對應的金屬膜上形成 一導光層,該導光層與該金屬框及該金屬膜係一體的; 表單編號Α0101 第4頁/共17頁 1003205736-0 100年06月10日接正替換頁 1354838 在該底板的另一區域設置_光源,該光源靠近該導光層 側面設置,完成該背光模組的製造過程。 [0011] 相較於先前技術,本發明之背光模組中,該導光層與該 金屬框係一體的,該導光層與該底板之間不存在間隙’ 故被該底板反射的光線均射進該導光層’避免光線射出 間隙而造成光線損失,從而提高該光源的光利用率,增 強背光的輝度;且,該背光模組利用該底板作為反射元 件,省去單獨的反射片元件,從而降低材料成本。 [0012] 相較於先前技術,本發明之背光模組之製造方法中’本 發明之背光模組由於該導光層形成於該網點及該區域的 表面,故不需要用膠框來固持該導光層,使得製造工序 簡單,同時也減少製造工時,降低製造成本;且,該導 光層與該金屬框係一體形成的,該導光層與該區域之間 不存在間隙,被該區域反射的光線均射進該導光層’避 免光線射出間隙而造成光線損失’從而提高該光源的光 利用率,增強背光的輝度;另’該背光模組利用該底板 之一區域作為反射元件’省去單獨的反射片元件,從而 降低材料成本。 【實施方式】 [0013] 請參考圖3 ’係本發明之背光模組第一實施方式的截面示 意圖。該背光模組2包括一稜鏡片20、一擴散片21、一光 源22、一光源罩23及一金屬框25 » [0014] 該金屬框25具有一矩形底板251、四個側壁252及—導光 層254。其中,該四個側壁252均垂直設置於該底板251 095146227 之四邊緣,且首尾相接。 表單編號A0101 第5頁/共Π頁 1003205736-0 1354838 100年06.月10日修正替換頁 [0015] 該底板251具有二相鄰的第一區域258及第二區域259。 其中,該底板251係一具有光反射特性的金屬板,故該第 一區域258亦具有反射特性。該第一區域258表面具有間 隔分佈的複數網點253,該網點253係半球形突起。該導 光層254設於該第一區域258並覆蓋該複數網點253,該 導光層254與該金屬框25係一體的。 [0016] 該導光層254具有一入光面255及一出光面256,該入光 面255與該出光面256相鄰設置,該入光面255垂直於該 底板251 ’該出光面256遠離該底板251且與該底板251平 行0 [00Π] 該光源罩23收容該光源22,並設置於該第二區域259,使 該光源22面對該導光層254的入光面255—側。該擴散片 21及該稜鏡片20依次層疊設置於該導光層254的出光面 256—侧,並收容於該金屬框25内》 [0018] 當該背光模組2用於液晶顯示裝置以提供背光時,該光源 22產生的光線自該入光面255導入該導光層254,該入射 光線藉由該導光層254處理後由該出光面256射出,並經 由該擴散片21及該稜鏡片20提供給液晶顯示面板以實現 圖像顯示。 [0019] 請參閱圖4,係上述背光模組2局部放大的光路示意圖。 由於該導光層254與該金屬框25係一體的,故該導光層 254與該金屬框25之間不存在間隙,被該第一區域258反 射的光線均進入該導光層254,被該金屬框25之側壁252 反射的光線亦均進入該導光層254。 095146227 表單編號A0101 第6頁/共17頁 1003205736-0 1,354838 100年06月10日修正替換頁 [0020] 當然,本實施方式中的網點253亦可為其他形狀的突起, 如矩形突起或其他形狀的突起。 [0021] 相較於先前技術,本發明之背光模組2中,由於該導光層 254與該金屬框25係一體的,故使該導光層254與該金屬 框25之間不存在間隙,被該第一區域258反射的光線均射 進該導光層254,被該金屬框25之側壁252反射的光線亦 均進入該導光層254,避免光線射出間隙而造成光線損失 ,從而提高該光源22的光利用率,增強背光的輝度;且 ,該背光模組2利用該舍屬框25之第一區域258作為反射 元件,省去單獨的反射片元件,從而降低材料成本。 [0022] 該背光模組2的製造方法,其包括以下步驟: [0023] a.提供一金屬框25,該金屬框25包括一底板251及四個 側壁252,該四個側壁252垂直設置在該底板251的四邊 緣,並首尾相接。 [0024] b.將該底板251分成二相鄰的第一區域258及第二區域 259,並藉由機械加工的方法在該第一區域258表面製造 複數間隔分佈的網點253。 [0025] 其中,該底板2 51係一具有光反射特性的金屬板,故該第 一區域258亦具有反射特性。該複數網點253加工為半球 形突起,同時,亦可加工為矩形或者其他形狀的突起。 該複數網點253亦可藉由化學刻蝕的方法製造於該第一區 域258表面。 [0026] c.藉由射出成形技術,於該第一區域258及該網點253 的表面注入透明塑膠材料,形成一導光層254,該導光層 095146227 表單編號A0101 第7頁/共17頁 1003205736-0 1354838 ___ 100年06月10日梭正替换頁 254與該金屬框25係一體形成的。 [0027] 其中,所形成的導光層254具有一入光面255及一出光面 256,該入光面255與該出光面256相鄰,該入光面255垂 直於該底板251,該出光面256遠離該底板251且與該底 板251平行。該透明塑膠材料採用聚曱基丙烯酸甲酯,除 此之外亦可採用高分子碳酸酯材料。 [0028] d.在該第二區域259上設置一光源罩23及一光源22,該 光源22收容於該光源罩23内。 [0029] e.於該導光層254之出光面256 —側依次層疊設置一擴 散片21及一稜鏡片20,並收容於該金屬框25内,從而完 成該背光模組2的製造過程。 [0030] 相較於先前技術,本發明之背光模組2之製造方法中,該 導光層254形成於該網點253及該第一區域258的表面, 故不需要用膠框來固持該導光層254,使得組裝工序簡單 ,同時也減少組裝工時,降低了組裝成本;且,該導光 層254與該金屬框25係一體形成的,該導光層254與該金 屬框25之間不存在間隙,被該第一區域258反射的光線均 射進該導光層254,被該金屬框25之側壁252反射的光線 亦均進入該導光層254,避免光線射出間隙而造成光線損 失,從而提高該光源22的光利用率,增強背光的輝度; 另,該背光模組2利用該金屬框25之第一區域258作為反 射元件,省去單獨的反射片元件,從而降低材料成本。 [0031] 請參閱圖5,係本發明之背光模組第二實施方式的截面示 意圖。該背光模組3之結構與第一實施方式大致相同,其 095146227 表單編號A0101 第8頁/共17頁 1003205736-0 100年06月10日修正替換頁 1354838 區別在於:該底板351及該網點353的表面設有一層具高 反射率的金屬膜357,本實施方式中該金屬膜357係一鋁 膜,除此之外,亦可以為一銀膜。藉由該金屬膜357提高 該底板351第一區域358與設置於該第一區域358上的網 點353的反射率,減少光線反射時的損失,更好地提高該 光源32的光利用率,從而增強該背光模組3的輝度。 [0032] 本實施方式之背光模組3的製造方法與第一實施方式大致 相同,其區別在於:在步驟b中,採用化學沉積方法,於 該底板3 51表面及該網點353的表面形成一層高反射率的 金屬膜357,該金屬膜357可以係一鋁膜,亦可以係一銀 膜。上述金屬膜357亦可採用濺鍍的方法形成。 [0033] 綜上所述,本發明確已符合發明之要件,爰依法提出專 利申請。惟,以上所述者僅為本發明之較佳實施方式, 本發明之範圍並不以上述實施方式為限,舉凡熟習本案 技藝之人士援依本發明之精神所作之等效修飾或變化, 皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 [0034] 圖1係先前技術所揭露之背光模組之截面示意圖。 [0035] 圖2係圖1所示背光模組之局部放大的光路示意圖。 [0036] 圖3係本發明之背光模組第一實施方式的截面示意圖。 [0037] 圖4係圖3所示背光模組之局部放大的光路示意圖。 [0038] 圖5係本發明之背光模組第二實施方式的截面示意圖。 【主要元件符號說明】 095146227 表單編號A0101 第9頁/共17頁 1003205736-0 1354838 100年06月10日梭正替换頁 [0039] 背光模組:2、3 [0040] 網點:253、353 [0041] 稜鏡片:20 [0042] 導光層:254 [0043] 擴散片:21 [0044] 入光面:255 [0045] 光源:22、32 [0046] 出光面:256 [0047] 光源罩:23 [0048] 第一區域:258 ' 358 [0049] 金屬框:25 [0050] 第二區域:2 5 9 [0051] 底板:251、351 [0052] 金屬膜:357 [0053] 側壁:252 095146227 表單编號A0101 第10頁/共17頁 1003205736-01354838 VI. Description of the Invention: [0001] [0002] [0004] [0005] [0005] 095146227 June 10, 100, according to the replacement page [Technical Field of the Invention] The present invention relates to a backlight module and its manufacture method. [Prior Art] With the development of digital technology, liquid crystal display products have been widely used in various aspects of daily life, and the image quality requirements for liquid crystal display screens have also been gradually improved. However, the liquid crystal itself does not emit light, and f must have a light source to continuously provide light into the liquid crystal display screen to realize the screen display. In the liquid crystal display product, a backlight module is usually selected to provide light. Referring to Figure 1, there is shown a cross-sectional view of a backlight module disclosed in the prior art. The backlight module 1 includes a cymbal, a diffusion, a light source 12, a light source cover 13, a light guide plate 14, a plastic frame 15, a reflective sheet 16, and a metal frame 17. The light source cover 13 houses the light source 12, and the prism sheet 10, the diffusion sheet 11, the light guide plate 14, and the reflection sheet 16 are sequentially disposed in a stacking manner. The plastic frame 15 and the metal frame 17 are combined to receive the cymbal sheet. The diffuser 11 , the light source cover 13 , the light guide plate 14 , and the reflective sheet 16 . The light guide plate 14 is a rectangular flat plate having a light incident surface 141 , a light exit surface 142 , and a bottom surface 143 . The light-emitting surface 142 is disposed opposite to the bottom surface 143 and adjacent to the light-incident surface 141, respectively. The bottom surface 143 is spaced apart from the plurality of hemispherical dots 144. When the backlight module 1 is used in a liquid crystal display device to provide a backlight, the light generated by the light source 12 is introduced into the light guide plate 14 from the light incident surface 141. The incident light is processed by the light guide plate 14 and then emitted from the light exit surface 142. And supplied to the liquid crystal display panel via the diffusion sheet 11 and the cymbal sheet 10. Form No. A0101 Page 3 / Total 17 Page 1003205736-0 1354838 [0006] [0007] [0009] [0010] 095146227 The replacement of the page on June 10, 100, however, in the above backlight module 1, due to The bottom surface 143 of the light guide plate 14 is provided with a plurality of dots 144, so that there is a gap between the light guide plate 14 and the reflection sheet 16, as shown in FIG. In the light reflected by the reflection sheet 16, it is assumed that the reflection angle of the reflected light passing through the edge of the bottom surface 143 of the light guide plate 14 is α, and the reflected light having a reflection angle smaller than α is incident on the light guide plate 14, and the reflection is Light having an angle greater than α is incident on the frame 15 and absorbed, causing loss of part of the light, thereby reducing the light utilization rate of the light source 12; and when the backlight module 1 is assembled, the light guide plate 14 is required to be borrowed. The plastic frame 15 is held, which increases the assembly process and assembly time, thereby increasing the assembly cost. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a backlight module that can effectively improve light source utilization and reduce assembly cost. At the same time, it is necessary to provide a method of manufacturing the backlight module. A backlight module includes a light source and a metal frame. The metal frame includes a bottom plate and a light guiding layer. The bottom surface has a plurality of dots, and the bottom plate and the surface of the dot are provided with a metal film with high reflectivity. The light guiding layer covers the metal film corresponding to the dot, and the light guiding layer is integrated with the metal frame and the metal film. The light source is disposed on the surface of the bottom plate and disposed near the side of the light guiding layer. A manufacturing method of a backlight module, comprising the steps of: providing a metal frame, the metal frame comprising a bottom plate; dividing the bottom plate into two adjacent regions, and fabricating a plurality of spaced-apart dots on a surface of one of the regions, using chemistry a method of depositing a metal film on the surface of the substrate and the dot; forming a light guiding layer on the metal film corresponding to the surface of the dot and the surface, the light guiding layer and the metal frame and the metal film Integral; Form No. Α0101 Page 4 of 17 1003205736-0 On June 10, 100, the replacement page 1354838 is set in another area of the bottom plate. The light source is disposed near the side of the light guiding layer, and the The manufacturing process of the backlight module. [0011] Compared with the prior art, in the backlight module of the present invention, the light guiding layer is integrated with the metal frame, and there is no gap between the light guiding layer and the bottom plate, so the light reflected by the bottom plate is Injecting into the light guiding layer to prevent light from being emitted into the gap and causing light loss, thereby improving the light utilization efficiency of the light source and enhancing the brightness of the backlight; and the backlight module uses the bottom plate as a reflective element, eliminating the need for a separate reflective sheet element , thereby reducing material costs. [0012] Compared with the prior art, in the manufacturing method of the backlight module of the present invention, the backlight module of the present invention does not need to be held by a plastic frame because the light guiding layer is formed on the surface of the dot and the region. The light guiding layer makes the manufacturing process simple, and also reduces manufacturing man-hours and reduces manufacturing cost; and the light guiding layer is integrally formed with the metal frame, and there is no gap between the light guiding layer and the region, The light reflected by the area is incident on the light guiding layer 'to avoid light from exiting the gap and causing light loss' to improve the light utilization efficiency of the light source and enhance the brightness of the backlight; and the backlight module utilizes a region of the bottom plate as a reflective element 'Leave the individual reflector elements to reduce material costs. [Embodiment] [0013] Please refer to FIG. 3' for a cross-sectional view of a first embodiment of a backlight module of the present invention. The backlight module 2 includes a cymbal 20, a diffusion sheet 21, a light source 22, a light source cover 23, and a metal frame 25. [0014] The metal frame 25 has a rectangular bottom plate 251, four side walls 252, and a guide. Light layer 254. The four sidewalls 252 are vertically disposed on the four edges of the bottom plate 251 095146227, and are connected end to end. Form No. A0101 Page 5/Total Page 1003205736-0 1354838 100 Year 06. Month 10 Correction Replacement Page [0015] The bottom plate 251 has two adjacent first regions 258 and second regions 259. The bottom plate 251 is a metal plate having light reflection characteristics, so that the first region 258 also has a reflection property. The first region 258 has a plurality of dots 253 spaced apart on its surface, the dots 253 being hemispherical protrusions. The light guiding layer 254 is disposed on the first region 258 and covers the plurality of dots 253. The light guiding layer 254 is integral with the metal frame 25. The light guiding layer 254 has a light incident surface 255 and a light exiting surface 256. The light incident surface 255 is disposed adjacent to the light emitting surface 256. The light incident surface 255 is perpendicular to the bottom surface 251 ′. The bottom plate 251 is parallel to the bottom plate 251. The light source cover 22 houses the light source 22 and is disposed in the second region 259 such that the light source 22 faces the light incident surface 255 side of the light guiding layer 254. The diffusion sheet 21 and the cymbal sheet 20 are sequentially stacked on the light-emitting surface 256-side of the light-guiding layer 254 and housed in the metal frame 25. [0018] When the backlight module 2 is used in a liquid crystal display device to provide During the backlight, the light generated by the light source 22 is introduced into the light guiding layer 254 from the light incident surface 255. The incident light is processed by the light guiding layer 254 and then emitted from the light emitting surface 256, and passes through the diffusion sheet 21 and the edge. The lens 20 is supplied to a liquid crystal display panel to effect image display. [0019] Please refer to FIG. 4 , which is a partially enlarged optical path diagram of the backlight module 2 . Since the light guiding layer 254 is integrated with the metal frame 25, there is no gap between the light guiding layer 254 and the metal frame 25, and the light reflected by the first region 258 enters the light guiding layer 254. The light reflected by the sidewall 252 of the metal frame 25 also enters the light guiding layer 254. 095146227 Form No. A0101 Page 6 of 17 1003205736-0 1,354838 Correction Replacement Page of June 10, 100 [0020] Of course, the dots 253 in this embodiment may also be protrusions of other shapes, such as rectangular protrusions or Protrusions of other shapes. [0021] Compared with the prior art, in the backlight module 2 of the present invention, since the light guiding layer 254 is integrated with the metal frame 25, there is no gap between the light guiding layer 254 and the metal frame 25. The light reflected by the first region 258 is incident on the light guiding layer 254, and the light reflected by the sidewall 252 of the metal frame 25 also enters the light guiding layer 254, thereby preventing light from being emitted from the gap and causing light loss, thereby improving The light utilization rate of the light source 22 enhances the brightness of the backlight; and the backlight module 2 uses the first region 258 of the thinning frame 25 as a reflective element, thereby eliminating a separate reflective sheet element, thereby reducing material cost. [0022] The manufacturing method of the backlight module 2 includes the following steps: [0023] a metal frame 25 is provided, the metal frame 25 includes a bottom plate 251 and four side walls 252, and the four side walls 252 are vertically disposed at The four edges of the bottom plate 251 are connected end to end. [0024] b. The bottom plate 251 is divided into two adjacent first regions 258 and second regions 259, and a plurality of spaced-apart dots 253 are fabricated on the surface of the first region 258 by mechanical processing. [0025] wherein the bottom plate 2 51 is a metal plate having light reflection characteristics, the first region 258 also has a reflective property. The plurality of dots 253 are processed into hemispherical projections, and can also be processed into rectangular or other shaped projections. The plurality of dots 253 can also be fabricated on the surface of the first region 258 by chemical etching. [0026] c. by injection molding technology, a transparent plastic material is injected on the surface of the first region 258 and the dot 253 to form a light guiding layer 254, the light guiding layer 095146227 Form No. A0101 Page 7 of 17 1003205736-0 1354838 ___ The shuttle replacement page 254 is formed integrally with the metal frame 25 on June 10, 100. The light guiding layer 254 has a light incident surface 255 and a light exiting surface 256. The light incident surface 255 is adjacent to the light emitting surface 256. The light incident surface 255 is perpendicular to the bottom plate 251. The face 256 is remote from the bottom plate 251 and is parallel to the bottom plate 251. The transparent plastic material is made of polymethyl methacrylate, and a high molecular carbonate material can also be used. [0028] d. A light source cover 23 and a light source 22 are disposed on the second area 259, and the light source 22 is received in the light source cover 23. [0029] e. A diffusion sheet 21 and a cymbal sheet 20 are sequentially stacked on the light-emitting surface 256 side of the light guiding layer 254, and are accommodated in the metal frame 25, thereby completing the manufacturing process of the backlight module 2. [0030] Compared with the prior art, in the manufacturing method of the backlight module 2 of the present invention, the light guiding layer 254 is formed on the surface of the dot 253 and the first region 258, so that the plastic frame is not needed to hold the guiding layer. The light layer 254 is simple in assembly process, and also reduces assembly time and reduces assembly cost. Moreover, the light guiding layer 254 is integrally formed with the metal frame 25, and between the light guiding layer 254 and the metal frame 25 There is no gap, and the light reflected by the first region 258 is incident on the light guiding layer 254, and the light reflected by the sidewall 252 of the metal frame 25 also enters the light guiding layer 254 to prevent light from being emitted from the gap and causing light loss. Therefore, the light utilization rate of the light source 22 is increased, and the brightness of the backlight is enhanced. In addition, the backlight module 2 uses the first region 258 of the metal frame 25 as a reflective element, thereby eliminating a separate reflective sheet element, thereby reducing material cost. [0031] Referring to FIG. 5, a cross-sectional view of a second embodiment of a backlight module of the present invention is shown. The structure of the backlight module 3 is substantially the same as that of the first embodiment, and its 095146227 form number A0101 page 8/17 page 1003205736-0 100 June 10 revision replacement page 1354838 The difference is that the bottom plate 351 and the dot 353 The surface of the metal film 357 is provided with a high reflectivity. In the present embodiment, the metal film 357 is an aluminum film, and may be a silver film. The metal film 357 increases the reflectivity of the first region 358 of the bottom plate 351 and the mesh point 353 disposed on the first region 358, thereby reducing the loss of light reflection, thereby improving the light utilization efficiency of the light source 32. The brightness of the backlight module 3 is enhanced. [0032] The manufacturing method of the backlight module 3 of the present embodiment is substantially the same as that of the first embodiment, except that in step b, a surface is formed on the surface of the bottom plate 351 and the surface of the dot 353 by a chemical deposition method. The metal film 357 of high reflectivity may be an aluminum film or a silver film. The above metal film 357 can also be formed by sputtering. [0033] In summary, the present invention has indeed met the requirements of the invention, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or changes in accordance with the spirit of the present invention. It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0034] FIG. 1 is a schematic cross-sectional view of a backlight module disclosed in the prior art. 2 is a partially enlarged optical path diagram of the backlight module shown in FIG. 1. 3 is a schematic cross-sectional view showing a first embodiment of a backlight module of the present invention. 4 is a partially enlarged optical path diagram of the backlight module shown in FIG. 3. 5 is a schematic cross-sectional view showing a second embodiment of the backlight module of the present invention. [Main component symbol description] 095146227 Form No. A0101 Page 9/Total 17 Page 1003205736-0 1354838 100th June 10th Shuttle Replacement Page [0039] Backlight Module: 2, 3 [0040] Dot: 253, 353 [ 0041] 稜鏡片: 20 [0042] Light guide layer: 254 [0043] Diffusion sheet: 21 [0044] Light-in surface: 255 [0045] Light source: 22, 32 [0046] Light-emitting surface: 256 [0047] Light source cover: [0048] First region: 258 '358 [0049] Metal frame: 25 [0050] Second region: 2 5 9 [0051] Base plate: 251, 351 [0052] Metal film: 357 [0053] Side wall: 252 095146227 Form No. A0101 Page 10 of 17 1003205736-0

Claims (1)

100年06月10日按正替換頁 1354838 七、申請專利範圍: 1 . 一種背光模組,其包括: 一光源;及 一金屬框,其包括: 一底板;及 一導光層, 其中,該底板表面具有複數網點,該底板與該網點的表面 設有一層具高反射率的金屬膜,該導光層覆蓋該網點所對 應的金屬膜,該導光層與該金屬框及該金屬膜係一體的, 該光源設置於該底板表面且靠近該導光層側面。 如申請專利範圍第1項所述之背光模組,其中,該網點係 間隔分佈的。 如申請專利範圍第1項所述之背光模組,其中,該網點係 半球形突起。 如申請專利範圍第1項所述之背光模組,其中,該網點係 矩形突起。 如申請專利範圍第1項所述之背光模組,其中,該金屬膜 為一鋁膜。 如申請專利範圍第1項所述之背光模組,其中,該金屬膜 為一銀膜。 一種背光模組的製造方法,其包括以下步驟: a. 提供一金屬框,該金屬框包括一底板; b. 將該底板分成二相鄰區域,並在其中一區域的表面製 造複數網點,採用化學沉積的方法,於該底板及該網點的 表面形成一金屬膜; 095146227 表單編號A0101 第11頁/共17頁 1003205736-0 1354838 __ 100年06月10日核正替換頁 C.在該網點及該區域的表面所對應的金屬膜上形成一導 光層,該導光層與該金屬框及該金屬膜係一體形成的; d.在該底板的另> 區域表面設置一光源,該光源靠近該 導光層側面設置,完成該背光模組的製造過程。 8. 如申請專利範圍第7項所述之背光模組的製造方法,其中 ,步驟b中該網點係間隔分佈的。 9, 如申請專利範圍第7項所述之背光模組的製造方法,其中 ,步驟b中該網點係藉由機械加工方法製造形成的。 10 .如申請專利範圍第7項所述之背光模組的製造方法,其中 ,步驟b中該網點係藉由化學刻蝕方法製造形成的。 11 .如申請專利範圍第7項所述之背光模組的製造方法,其中 ,步驟c中該導光層係採用射出成形技術製造而成的。 12 .如申請專利範圍第7項所述之背光模組的製造方法,其中 ,步驟c中該導光層係採用聚曱基丙烯酸甲酯製造而成的 〇 13 .如申請專利範圍第7項所述之背光模組的製造方法,其中 ,步驟c中該導光層係採用高分子碳酸酯材料製造而成的 〇 14 .如申請專利範圍第7項所述之背光模組的製造方法,其中 ,步驟b中,採用濺鍍的方法,於該底板及該網點的表面 形成一金屬膜。 15 .如申請專利範圍第7項所述之背光模組的製造方法,其中 ,該金屬膜為一紹膜。 16.如申請專利範圍第7項所述之背光模組的製造方法,其中 ,該金屬膜為一銀膜。 095146227 表單編號A0101 第12頁/共17頁 1003205736-0According to the positive replacement page 1354838, the application scope of the patent: 1. A backlight module, comprising: a light source; and a metal frame, comprising: a bottom plate; and a light guiding layer, wherein The surface of the bottom plate has a plurality of dots, and the bottom plate and the surface of the mesh are provided with a metal film having a high reflectivity, the light guiding layer covers the metal film corresponding to the dot, the light guiding layer and the metal frame and the metal film system In one piece, the light source is disposed on the surface of the bottom plate and adjacent to the side of the light guiding layer. The backlight module of claim 1, wherein the dots are spaced apart. The backlight module of claim 1, wherein the dot is a hemispherical protrusion. The backlight module of claim 1, wherein the dot is a rectangular protrusion. The backlight module of claim 1, wherein the metal film is an aluminum film. The backlight module of claim 1, wherein the metal film is a silver film. A method for manufacturing a backlight module, comprising the steps of: a. providing a metal frame, the metal frame comprising a bottom plate; b. dividing the bottom plate into two adjacent regions, and fabricating a plurality of dots on a surface of one of the regions, a method of chemical deposition, forming a metal film on the surface of the bottom plate and the dot; 095146227 Form No. A0101 Page 11 of 17 1003205736-0 1354838 __ June 10, 10th Nuclear Replacement Page C. At the site and a light guiding layer is formed on the metal film corresponding to the surface of the region, the light guiding layer is integrally formed with the metal frame and the metal film; d. a light source is disposed on a surface of the other surface of the bottom plate, the light source The manufacturing process of the backlight module is completed by being disposed near the side of the light guiding layer. 8. The method of manufacturing a backlight module according to claim 7, wherein the dots are spaced apart in step b. 9. The method of manufacturing a backlight module according to claim 7, wherein the dot in the step b is formed by a mechanical processing method. 10. The method of manufacturing a backlight module according to claim 7, wherein the dot in the step b is formed by a chemical etching method. 11. The method of manufacturing a backlight module according to claim 7, wherein in the step c, the light guiding layer is manufactured by an injection molding technique. 12. The method of manufacturing a backlight module according to claim 7, wherein in the step c, the light guiding layer is made of polymethyl methacrylate, as described in claim 7 The manufacturing method of the backlight module, wherein the light guiding layer is made of a polymer carbonate material in the step c, and the manufacturing method of the backlight module according to the seventh aspect of the patent application, Wherein, in step b, a metal film is formed on the surface of the bottom plate and the dot by sputtering. The method of manufacturing a backlight module according to claim 7, wherein the metal film is a film. 16. The method of manufacturing a backlight module according to claim 7, wherein the metal film is a silver film. 095146227 Form No. A0101 Page 12 of 17 1003205736-0
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CN103836448A (en) * 2012-11-27 2014-06-04 群康科技(深圳)有限公司 Backlight module and displayer comprising same
US9239419B2 (en) 2013-01-24 2016-01-19 Au Optronics (Xiamen) Corporation Narrow border backlight module and manufacturing method thereof
US9285529B2 (en) 2013-09-22 2016-03-15 Wistron Corporation Backlight module
CN105974625A (en) * 2016-07-21 2016-09-28 山东共达信息技术有限公司 Integrated machine

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Publication number Priority date Publication date Assignee Title
CN103836448A (en) * 2012-11-27 2014-06-04 群康科技(深圳)有限公司 Backlight module and displayer comprising same
US9239419B2 (en) 2013-01-24 2016-01-19 Au Optronics (Xiamen) Corporation Narrow border backlight module and manufacturing method thereof
US9285529B2 (en) 2013-09-22 2016-03-15 Wistron Corporation Backlight module
CN105974625A (en) * 2016-07-21 2016-09-28 山东共达信息技术有限公司 Integrated machine

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